/* roulang page: index */
:root {
            --color-ink: #0B0F14;
            --color-ink-2: #161B22;
            --color-surface: #F5F7FA;
            --color-card: #FFFFFF;
            --color-cyan: #22D3EE;
            --color-cyan-soft: rgba(34, 211, 238, 0.12);
            --color-orange: #F97316;
            --color-orange-soft: rgba(249, 115, 22, 0.14);
            --color-text: #2A3038;
            --color-text-deep: #0B0F14;
            --color-muted: #6B7280;
            --color-border-light: rgba(0, 0, 0, 0.06);
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-text-on-dark: #F5F7FA;
            --color-body-on-dark: #D6DCE4;
            --color-muted-on-dark: #9CA3AF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-dark: 0 10px 30px rgba(0, 0, 0, 0.4);
            --spacing-base: 8px;
            --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
            --font-size-h1: clamp(2rem, 4.5vw, 3rem);
            --font-size-h2: clamp(1.5rem, 3vw, 2rem);
            --transition: 0.2s ease;
            --transition-slow: 0.6s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Inter', 'Noto Sans SC', 'Source Han Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-card);
            overflow-x: hidden;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                transition-delay: 0ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-text-deep);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-cyan);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.75rem 1.75rem;
            transition: all var(--transition);
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--color-orange);
            color: #ffffff;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:active {
            background-color: #e55f0a;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--color-cyan);
            border: 1px solid var(--color-cyan);
        }
        .btn-ghost-custom:hover,
        .btn-ghost-custom:active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--color-cyan);
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background-color: var(--color-ink);
            color: var(--color-text-on-dark);
        }
        .btn-dark-custom:hover,
        .btn-dark-custom:active {
            background-color: var(--color-ink-2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .btn-sm-custom {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg-custom {
            padding: 1rem 2.25rem;
            font-size: 1.125rem;
        }

        .badge-custom {
            display: inline-block;
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .badge-cyan {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }
        .badge-dark {
            background: var(--color-ink);
            color: #fff;
            border: 1px solid var(--color-ink);
        }

        .chip-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .chip-tag:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3.5rem 0;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-cyan);
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.1;
            margin-bottom: 1rem;
            color: var(--color-text-deep);
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-muted);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 2.5rem;
        }

        .container-responsive {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 576px) {
            .container-responsive {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 992px) {
            .container-responsive {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1200px) {
            .container-responsive {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* HEADER */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow 0.3s ease, background 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.97);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0.75rem 0;
            gap: 0.75rem;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--color-ink);
            color: var(--color-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-ink);
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-cyan);
        }
        .nav-tabs-wrapper {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.35rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            max-width: 100%;
        }
        .nav-tabs-wrapper::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs-wrapper .chip-tag {
            font-size: 0.78rem;
            padding: 0.3rem 0.85rem;
            border-radius: var(--radius-pill);
            background: transparent;
            border: 1px solid transparent;
            color: var(--color-muted);
        }
        .nav-tabs-wrapper .chip-tag:hover {
            background: var(--color-surface);
            color: var(--color-text-deep);
            border-color: var(--color-border-light);
        }
        .nav-tabs-wrapper .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
            font-weight: 700;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .hamburger-btn {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.5rem;
            color: var(--color-ink);
            cursor: pointer;
            padding: 0.25rem;
        }
        .mobile-nav-collapse {
            display: none;
            width: 100%;
            padding: 0.75rem 0;
        }

        /* HERO - 白皮书获客 */
        .hero-whitepaper {
            position: relative;
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            overflow: hidden;
            padding: 4.5rem 0;
            min-height: 680px;
            display: flex;
            align-items: center;
        }
        .hero-whitepaper::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 20% 30%, rgba(34, 211, 238, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 70%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-whitepaper .container-responsive {
            position: relative;
            z-index: 2;
        }
        .hero-whitepaper-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 3rem;
            align-items: center;
        }
        @media (max-width: 992px) {
            .hero-whitepaper-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        .hero-cover-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.55);
        }
        .hero-cover-wrap img {
            width: 100%;
            height: auto;
            min-height: 380px;
            object-fit: cover;
            aspect-ratio: 4 / 5;
        }
        .hero-cover-badge {
            position: absolute;
            bottom: 1rem;
            left: 1rem;
            right: 1rem;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-sm);
            padding: 0.75rem 1rem;
            font-size: 0.85rem;
            color: var(--color-body-on-dark);
            text-align: center;
        }
        .hero-whitepaper-content h1 {
            color: var(--color-text-on-dark);
            font-size: var(--font-size-hero);
            font-weight: 800;
            line-height: 1.05;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }
        .hero-whitepaper-content h1 .highlight-cyan {
            color: var(--color-cyan);
        }
        .hero-whitepaper-content .hero-desc {
            font-size: 1.15rem;
            color: var(--color-body-on-dark);
            line-height: 1.9;
            margin-bottom: 1.5rem;
            max-width: 520px;
        }
        .hero-toc {
            list-style: none;
            padding: 0;
            margin: 0 0 1.75rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .hero-toc li {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.85rem;
            color: var(--color-body-on-dark);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .hero-toc li i {
            color: var(--color-cyan);
            font-size: 0.7rem;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .hero-data-points {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin-top: 2rem;
        }
        .hero-data-point {
            display: flex;
            flex-direction: column;
        }
        .hero-data-point .hp-number {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--color-cyan);
            letter-spacing: -0.02em;
        }
        .hero-data-point .hp-label {
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }

        /* 优惠阶梯 */
        .tier-section {
            background: var(--color-surface);
        }
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 992px) {
            .tier-grid {
                grid-template-columns: 1fr;
            }
        }
        .tier-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .tier-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .tier-card.featured {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            border-color: var(--color-ink);
            position: relative;
        }
        .tier-card.featured h3 {
            color: var(--color-text-on-dark);
        }
        .tier-card.featured .tier-price {
            color: var(--color-cyan);
        }
        .tier-card.featured .tier-desc {
            color: var(--color-body-on-dark);
        }
        .tier-card.featured .tier-features li {
            color: var(--color-body-on-dark);
        }
        .tier-price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-ink);
            letter-spacing: -0.03em;
            margin: 0.75rem 0;
        }
        .tier-desc {
            color: var(--color-muted);
            font-size: 0.95rem;
            margin-bottom: 1.25rem;
        }
        .tier-features {
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem;
        }
        .tier-features li {
            padding: 0.35rem 0;
            color: var(--color-text);
            font-size: 0.9rem;
            border-bottom: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .tier-features li i {
            color: var(--color-cyan);
            font-size: 0.75rem;
        }

        /* 套餐对比 */
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .compare-table {
            width: 100%;
            min-width: 720px;
            border-collapse: separate;
            border-spacing: 0;
            font-size: 0.9rem;
        }
        .compare-table th,
        .compare-table td {
            padding: 1rem 1.25rem;
            text-align: left;
            border-bottom: 1px solid var(--color-border-light);
        }
        .compare-table thead th {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .compare-table tbody tr:hover {
            background: rgba(34, 211, 238, 0.04);
        }
        .compare-table .highlight-col {
            background: rgba(34, 211, 238, 0.07);
            border-left: 3px solid var(--color-cyan);
        }
        .compare-item-label {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-weight: 600;
            color: var(--color-text-deep);
        }
        .compare-item-label i {
            color: var(--color-cyan);
            font-size: 0.7rem;
        }

        /* 保障条 */
        .assurance-bar {
            background: var(--color-ink);
            border-radius: var(--radius-lg);
            padding: 2rem 2.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            box-shadow: var(--shadow-card-dark);
        }
        .assurance-bar h3 {
            color: var(--color-text-on-dark);
            margin-bottom: 0.25rem;
        }
        .assurance-bar p {
            color: var(--color-body-on-dark);
            margin-bottom: 0;
            font-size: 0.9rem;
        }
        .assurance-bar .badge-custom {
            background: rgba(34, 211, 238, 0.15);
            color: var(--color-cyan);
            border: 1px solid rgba(34, 211, 238, 0.4);
        }

        /* 服务区 - 不对称栅格 */
        .service-asymmetric {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 1200px) {
            .service-asymmetric {
                grid-template-columns: 1fr;
            }
        }
        .service-main-card {
            background: var(--color-ink);
            border-radius: var(--radius-lg);
            padding: 2.75rem;
            color: var(--color-text-on-dark);
            box-shadow: var(--shadow-card-dark);
            min-height: 380px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }
        .service-main-card h3 {
            color: var(--color-text-on-dark);
            font-size: 1.6rem;
            margin-bottom: 0.75rem;
        }
        .service-main-card p {
            color: var(--color-body-on-dark);
            font-size: 1rem;
            line-height: 1.85;
            margin-bottom: 1.25rem;
        }
        .service-main-card .service-stat {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-cyan);
            letter-spacing: -0.02em;
        }
        .service-side-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }
        @media (max-width: 576px) {
            .service-side-grid {
                grid-template-columns: 1fr;
            }
        }
        .service-side-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .service-side-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .service-side-card .svc-number {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--color-cyan);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .service-side-card h4 {
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
            color: var(--color-text-deep);
        }
        .service-side-card p {
            font-size: 0.875rem;
            color: var(--color-muted);
            margin-bottom: 0.5rem;
        }
        .service-side-card .svc-metric {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--color-orange);
            letter-spacing: -0.02em;
        }

        /* 优势数据 */
        .stats-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        @media (max-width: 992px) {
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .stats-dashboard {
                grid-template-columns: 1fr;
            }
        }
        .stat-dial {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 1.75rem 1.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition);
        }
        .stat-dial:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .stat-dial .stat-value {
            font-size: 2.75rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            color: var(--color-ink);
            line-height: 1.1;
        }
        .stat-dial .stat-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-cyan);
        }
        .stat-dial .stat-label {
            font-size: 0.85rem;
            color: var(--color-muted);
            margin-top: 0.5rem;
        }

        /* 案例区 - 横向滚动 */
        .case-scroll {
            display: flex;
            gap: 1.5rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scroll-snap-type: x mandatory;
            padding-bottom: 1rem;
            scrollbar-width: thin;
            scrollbar-color: var(--color-cyan) var(--color-surface);
        }
        .case-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .case-scroll::-webkit-scrollbar-track {
            background: var(--color-surface);
            border-radius: 3px;
        }
        .case-scroll::-webkit-scrollbar-thumb {
            background: var(--color-cyan);
            border-radius: 3px;
        }
        .case-card {
            flex: 0 0 340px;
            scroll-snap-align: start;
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .case-card-img {
            height: 180px;
            overflow: hidden;
        }
        .case-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-card:hover .case-card-img img {
            transform: scale(1.05);
        }
        .case-card-body {
            padding: 1.25rem 1.5rem;
        }
        .case-card-body .case-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--color-cyan);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.35rem;
        }
        .case-card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 0.35rem;
            color: var(--color-text-deep);
        }
        .case-card-body p {
            font-size: 0.875rem;
            color: var(--color-muted);
            margin-bottom: 0;
        }

        /* 新闻中心 */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 0.8fr;
            gap: 1.5rem;
        }
        @media (max-width: 992px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }
        .news-featured-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .news-featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .news-featured-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .news-featured-card .news-body {
            padding: 1.25rem 1.5rem;
        }
        .news-date {
            font-size: 0.75rem;
            color: var(--color-muted);
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 0.4rem;
        }
        .news-featured-card .news-body h4 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .news-featured-card .news-body p {
            font-size: 0.9rem;
            color: var(--color-muted);
            margin-bottom: 0.75rem;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .news-list-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 1rem 1.25rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.75rem;
        }
        .news-list-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .news-list-item .news-date {
            flex-shrink: 0;
            margin-bottom: 0;
            width: 90px;
            font-size: 0.7rem;
        }
        .news-list-item h5 {
            flex: 1;
            font-size: 0.9rem;
            margin-bottom: 0;
            color: var(--color-text-deep);
            min-width: 200px;
        }
        .news-list-item p {
            flex-basis: 100%;
            font-size: 0.8rem;
            color: var(--color-muted);
            margin-bottom: 0;
        }
        .news-list-item .btn {
            flex-shrink: 0;
        }

        /* 方案区 - 时间线 */
        .timeline-flow {
            position: relative;
            padding-left: 2.5rem;
        }
        .timeline-flow::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border-light);
        }
        .timeline-step {
            position: relative;
            padding: 0 0 2.25rem;
        }
        .timeline-step:last-child {
            padding-bottom: 0;
        }
        .timeline-step::before {
            content: '';
            position: absolute;
            left: -2.5rem;
            top: 0.25rem;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-cyan);
            border: 3px solid var(--color-card);
            box-shadow: 0 0 0 2px var(--color-cyan);
            z-index: 1;
        }
        .timeline-step .step-label {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--color-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 0.25rem;
        }
        .timeline-step h4 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
            color: var(--color-text-deep);
        }
        .timeline-step p {
            font-size: 0.9rem;
            color: var(--color-muted);
            margin-bottom: 0;
            max-width: 600px;
        }

        /* 品牌介绍 */
        .brand-intro-block {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
        }
        .brand-intro-block h3 {
            margin-bottom: 1rem;
            color: var(--color-text-deep);
        }
        .brand-intro-block p {
            color: var(--color-text);
            line-height: 1.9;
            font-size: 1rem;
            margin-bottom: 0;
        }

        /* 深度内容 */
        .deep-content-block {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            margin-bottom: 1.5rem;
        }
        .deep-content-block:last-child {
            margin-bottom: 0;
        }
        .deep-content-block h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--color-text-deep);
        }
        .deep-content-block p {
            color: var(--color-text);
            line-height: 1.9;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
        .deep-content-block p:last-child {
            margin-bottom: 0;
        }
        .deep-content-block .deep-highlight {
            background: var(--color-surface);
            border-left: 3px solid var(--color-cyan);
            padding: 1rem 1.25rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 0.9rem;
            color: var(--color-text);
            margin: 1rem 0;
        }

        /* 里程碑 */
        .milestone-horizontal {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1rem;
        }
        @media (max-width: 992px) {
            .milestone-horizontal {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 576px) {
            .milestone-horizontal {
                grid-template-columns: 1fr;
            }
        }
        .milestone-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.25rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition);
        }
        .milestone-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .milestone-item .ms-year {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--color-cyan);
            margin-bottom: 0.35rem;
        }
        .milestone-item .ms-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-text-deep);
            margin-bottom: 0.35rem;
        }
        .milestone-item .ms-desc {
            font-size: 0.8rem;
            color: var(--color-muted);
            margin-bottom: 0;
        }

        /* 限时入口 */
        .limited-entry {
            background: var(--color-ink);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            color: var(--color-text-on-dark);
            box-shadow: var(--shadow-card-dark);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
        }
        .limited-entry h3 {
            color: var(--color-text-on-dark);
            margin-bottom: 0.5rem;
        }
        .limited-entry p {
            color: var(--color-body-on-dark);
            margin-bottom: 0;
            font-size: 0.95rem;
        }
        .countdown-timer {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }
        .countdown-unit {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            padding: 0.75rem 1rem;
            text-align: center;
            min-width: 60px;
        }
        .countdown-unit .cd-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-cyan);
            letter-spacing: -0.02em;
            display: block;
        }
        .countdown-unit .cd-label {
            font-size: 0.7rem;
            color: var(--color-muted-on-dark);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        /* 相关推荐 */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        @media (max-width: 992px) {
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .recommend-grid {
                grid-template-columns: 1fr;
            }
        }
        .recommend-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .recommend-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .recommend-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .recommend-card:hover img {
            transform: scale(1.05);
        }
        .recommend-card .rc-body {
            padding: 1rem 1.25rem;
        }
        .recommend-card .rc-body h5 {
            font-size: 0.9rem;
            margin-bottom: 0.35rem;
            color: var(--color-text-deep);
        }
        .recommend-card .rc-body p {
            font-size: 0.8rem;
            color: var(--color-muted);
            margin-bottom: 0;
        }
        .recommend-card .rc-body .rc-link {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--color-cyan);
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            overflow: hidden;
            background: var(--color-card);
            box-shadow: var(--shadow-card);
        }
        .faq-accordion .accordion-button {
            background: var(--color-card);
            color: var(--color-text-deep);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 1.25rem 1.5rem;
            box-shadow: none;
            border: none;
            transition: all var(--transition);
            position: relative;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            filter: invert(1);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--color-cyan);
            outline: none;
        }
        .faq-accordion .accordion-body {
            padding: 1.25rem 1.5rem;
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.85;
            background: var(--color-card);
        }
        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--color-ink);
            box-shadow: var(--shadow-card-dark);
        }

        /* 联系 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .contact-layout {
                grid-template-columns: 1fr;
            }
        }
        .contact-form-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 2.25rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
        }
        .contact-form-card .form-control {
            border-radius: 10px;
            border: 1px solid var(--color-border-light);
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            color: var(--color-text);
            transition: all var(--transition);
        }
        .contact-form-card .form-control:focus {
            border-color: var(--color-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
            outline: none;
        }
        .contact-form-card .form-label {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--color-text-deep);
            margin-bottom: 0.35rem;
        }
        .contact-form-card textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .contact-info-card {
            background: var(--color-ink);
            border-radius: var(--radius-lg);
            padding: 2.25rem;
            color: var(--color-text-on-dark);
            box-shadow: var(--shadow-card-dark);
        }
        .contact-info-card h3 {
            color: var(--color-text-on-dark);
            margin-bottom: 0.75rem;
        }
        .contact-info-card p {
            color: var(--color-body-on-dark);
            font-size: 0.9rem;
            line-height: 1.85;
            margin-bottom: 0.75rem;
        }
        .contact-info-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.5rem 0;
            color: var(--color-body-on-dark);
            font-size: 0.85rem;
        }
        .contact-info-item i {
            color: var(--color-cyan);
            width: 20px;
            text-align: center;
        }

        /* FOOTER */
        .site-footer {
            background: var(--color-ink);
            color: var(--color-body-on-dark);
            padding: 3.5rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-text-on-dark);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .footer-brand span {
            color: var(--color-cyan);
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--color-muted-on-dark);
            line-height: 1.8;
            margin-bottom: 1rem;
        }
        .footer-heading {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: var(--color-muted-on-dark);
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }
        .footer-bottom a {
            color: var(--color-muted-on-dark);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--color-cyan);
        }
        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.5rem;
            align-items: center;
        }

        /* 渐显动画 */
        .fade-up {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 响应式导航 */
        @media (max-width: 1200px) {
            .nav-tabs-wrapper .chip-tag {
                font-size: 0.7rem;
                padding: 0.25rem 0.7rem;
            }
        }
        @media (max-width: 992px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-tabs-wrapper {
                order: 3;
                width: 100%;
                justify-content: flex-start;
            }
            .hamburger-btn {
                display: block;
            }
            .mobile-nav-collapse {
                display: block;
                order: 4;
            }
            .mobile-nav-collapse .chip-tag {
                display: block;
                width: 100%;
                text-align: left;
                border-radius: var(--radius-sm);
                padding: 0.5rem 1rem;
                margin-bottom: 0.25rem;
                background: transparent;
                border: none;
                color: var(--color-text);
                font-size: 0.9rem;
            }
            .mobile-nav-collapse .chip-tag:hover {
                background: var(--color-surface);
            }
            .mobile-nav-collapse .chip-tag.active {
                background: var(--color-ink);
                color: #fff;
            }
            .mobile-nav-collapse .header-cta-mobile {
                display: block;
                margin-top: 0.75rem;
                width: 100%;
                text-align: center;
            }
            .header-cta.desktop-cta {
                display: none;
            }
        }
        @media (min-width: 993px) {
            .hamburger-btn {
                display: none;
            }
            .mobile-nav-collapse {
                display: none;
            }
            .header-cta.desktop-cta {
                display: block;
            }
        }

        /* 卡片通用 */
        .card-dark-custom {
            background: var(--color-ink);
            border-radius: var(--radius-lg);
            padding: 2rem;
            color: var(--color-text-on-dark);
            box-shadow: var(--shadow-card-dark);
            border: 1px solid var(--color-border-dark);
        }
        .card-dark-custom h4 {
            color: var(--color-text-on-dark);
        }
        .card-dark-custom p {
            color: var(--color-body-on-dark);
        }

        /* 分隔线 */
        .divider-line {
            border: none;
            height: 1px;
            background: var(--color-border-light);
            margin: 0;
        }
        .divider-line-dark {
            border: none;
            height: 1px;
            background: var(--color-border-dark);
            margin: 0;
        }

        /* 响应式微调 */
        @media (max-width: 576px) {
            .section-padding {
                padding: 3rem 0;
            }
            .section-padding-sm {
                padding: 2rem 0;
            }
            .hero-whitepaper {
                min-height: auto;
                padding: 3rem 0;
            }
            .hero-whitepaper-grid {
                gap: 1.5rem;
            }
            .hero-whitepaper-content h1 {
                font-size: 2.5rem;
            }
            .hero-cover-wrap img {
                min-height: 280px;
            }
            .service-main-card {
                padding: 1.75rem;
                min-height: auto;
            }
            .timeline-flow {
                padding-left: 1.75rem;
            }
            .timeline-step::before {
                left: -1.75rem;
                width: 12px;
                height: 12px;
            }
            .countdown-timer {
                gap: 0.4rem;
            }
            .countdown-unit {
                padding: 0.5rem 0.65rem;
                min-width: 48px;
            }
            .countdown-unit .cd-number {
                font-size: 1.1rem;
            }
            .contact-form-card,
            .contact-info-card,
            .deep-content-block,
            .brand-intro-block {
                padding: 1.5rem;
            }
            .news-list-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .news-list-item .news-date {
                width: auto;
            }
            .compare-table {
                min-width: 560px;
                font-size: 0.8rem;
            }
            .compare-table th,
            .compare-table td {
                padding: 0.6rem 0.75rem;
                font-size: 0.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 375px) {
            .hero-whitepaper-content h1 {
                font-size: 2rem;
            }
            .hero-data-points {
                gap: 1rem;
            }
            .hero-data-point .hp-number {
                font-size: 1.25rem;
            }
            .btn-lg-custom {
                padding: 0.75rem 1.5rem;
                font-size: 0.95rem;
            }
            .btn {
                padding: 0.6rem 1.25rem;
                font-size: 0.85rem;
            }
            .tier-card {
                padding: 1.25rem;
            }
            .tier-price {
                font-size: 1.8rem;
            }
        }

        /* 深色Hero内部链接 */
        .hero-whitepaper a {
            color: var(--color-cyan);
        }
        .hero-whitepaper a:hover {
            color: var(--color-orange);
        }

/* roulang page: category1 */
:root {
            --color-ink: #0B0F14;
            --color-ink-2: #161B22;
            --color-surface: #F5F7FA;
            --color-card: #FFFFFF;
            --color-cyan: #22D3EE;
            --color-cyan-soft: rgba(34, 211, 238, 0.12);
            --color-orange: #F97316;
            --color-orange-soft: rgba(249, 115, 22, 0.14);
            --color-text: #2A3038;
            --color-text-deep: #0B0F14;
            --color-muted: #6B7280;
            --color-border-light: rgba(0, 0, 0, 0.06);
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-text-on-dark: #F5F7FA;
            --color-body-on-dark: #D6DCE4;
            --color-muted-on-dark: #9CA3AF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-dark: 0 10px 30px rgba(0, 0, 0, 0.4);
            --spacing-base: 8px;
            --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
            --font-size-h1: clamp(2rem, 4.5vw, 3rem);
            --font-size-h2: clamp(1.5rem, 3vw, 2rem);
            --transition: 0.2s ease;
            --transition-slow: 0.6s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'Source Han Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-card);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-cyan);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.75rem 1.75rem;
            transition: all var(--transition);
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--color-orange);
            color: #ffffff;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:active {
            background-color: #e55f0a;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--color-cyan);
            border: 1px solid var(--color-cyan);
        }
        .btn-ghost-custom:hover,
        .btn-ghost-custom:active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--color-cyan);
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background-color: var(--color-ink);
            color: var(--color-text-on-dark);
        }
        .btn-dark-custom:hover,
        .btn-dark-custom:active {
            background-color: var(--color-ink-2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .btn-sm-custom {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg-custom {
            padding: 1rem 2.25rem;
            font-size: 1.125rem;
        }
        .badge-custom {
            display: inline-block;
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .badge-cyan {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }
        .badge-dark {
            background: var(--color-ink);
            color: #fff;
            border: 1px solid var(--color-ink);
        }
        .chip-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .chip-tag:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3.5rem 0;
        }
        .section-padding-xs {
            padding: 2rem 0;
        }
        .container-responsive {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            min-height: 68px;
            padding: 0.5rem 0;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--color-ink);
            color: var(--color-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-text-deep);
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-orange);
        }
        .nav-tabs-wrapper {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0.25rem 0;
        }
        .nav-tabs-wrapper::-webkit-scrollbar {
            display: none;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .hamburger-btn {
            display: none;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-sm);
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
        }
        .hamburger-btn:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
        }
        .mobile-nav-collapse {
            display: none;
            flex-direction: column;
            gap: 0.5rem;
            padding: 1rem 0 1.25rem;
            border-top: 1px solid var(--color-border-light);
            background: rgba(255, 255, 255, 0.98);
        }
        .mobile-nav-collapse.show {
            display: flex;
        }
        .header-cta-mobile {
            margin-top: 0.5rem;
            text-align: center;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0.75rem 0;
            font-size: 0.875rem;
            color: var(--color-muted);
        }
        .breadcrumb-bar a {
            color: var(--color-muted);
        }
        .breadcrumb-bar a:hover {
            color: var(--color-cyan);
        }
        .breadcrumb-sep {
            margin: 0 0.5rem;
            color: #9CA3AF;
        }
        .breadcrumb-current {
            color: var(--color-text-deep);
            font-weight: 600;
        }

        /* Category Hero */
        .category-hero {
            background: var(--color-ink);
            padding: 4.5rem 0 5rem;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .category-hero-badge {
            align-self: flex-start;
        }
        .category-hero h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--color-text-on-dark);
            max-width: 800px;
            margin: 0;
        }
        .category-hero h1 .highlight {
            color: var(--color-cyan);
        }
        .category-hero p {
            font-size: 1.125rem;
            color: var(--color-body-on-dark);
            max-width: 720px;
            margin: 0;
            line-height: 1.8;
        }
        .hero-stats-row {
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
            margin-top: 0.75rem;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.15rem;
        }
        .hero-stat-num {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--color-cyan);
            letter-spacing: -0.01em;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--color-muted-on-dark);
        }

        /* Filter Chips Section */
        .filter-section {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border-light);
            padding: 1.5rem 0;
            position: sticky;
            top: 68px;
            z-index: 100;
        }
        .filter-row {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-right: 0.5rem;
            flex-shrink: 0;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            border-radius: var(--radius-pill);
            padding: 0.4rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-chip:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .filter-chip.active {
            background: var(--color-cyan);
            color: #0B0F14;
            border-color: var(--color-cyan);
            font-weight: 600;
        }

        /* Tournament List Section */
        .tournament-section {
            background: var(--color-card);
        }
        .tournament-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        .tournament-card {
            display: flex;
            gap: 1.25rem;
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 1.25rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .tournament-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .tournament-card-img {
            width: 160px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
        }
        .tournament-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .tournament-card:hover .tournament-card-img img {
            transform: scale(1.05);
        }
        .tournament-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .tournament-card-top {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .tournament-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-deep);
            line-height: 1.3;
            margin: 0;
        }
        .tournament-card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--color-muted);
        }
        .tournament-card-meta i {
            color: var(--color-cyan);
            margin-right: 0.25rem;
        }
        .tournament-card-desc {
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.6;
            margin: 0;
            flex: 1;
        }
        .tournament-card-action {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-top: 0.25rem;
        }
        .btn-outline-sm {
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-cyan);
            color: var(--color-cyan);
            background: transparent;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-outline-sm:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
        }

        /* Data stats strip */
        .stats-strip {
            background: var(--color-surface);
            padding: 3rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-block {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.25rem;
            border: 1px solid var(--color-border-light);
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }
        .stat-block:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .stat-block-num {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--color-orange);
            letter-spacing: -0.01em;
            line-height: 1;
        }
        .stat-block-label {
            font-size: 0.85rem;
            color: var(--color-muted);
            margin-top: 0.5rem;
        }

        /* Tournament timeline */
        .timeline-section {
            background: var(--color-card);
        }
        .timeline-wrap {
            position: relative;
            padding-left: 2rem;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border-light);
        }
        .timeline-item {
            position: relative;
            padding: 0 0 2rem 1.5rem;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -0.5rem;
            top: 0.4rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-cyan);
            border: 2px solid var(--color-card);
            box-shadow: 0 0 0 2px var(--color-cyan);
        }
        .timeline-dot.completed {
            background: var(--color-muted);
            box-shadow: 0 0 0 2px var(--color-muted);
        }
        .timeline-dot.live {
            background: var(--color-orange);
            box-shadow: 0 0 0 2px var(--color-orange);
            animation: pulse 1.5s ease infinite;
        }
        @keyframes pulse {
            0%, 100% { box-shadow: 0 0 0 2px var(--color-orange); }
            50% { box-shadow: 0 0 0 6px rgba(249, 115, 22, 0.3); }
        }
        .timeline-content {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.5rem;
            border: 1px solid var(--color-border-light);
        }
        .timeline-content h5 {
            font-weight: 700;
            color: var(--color-text-deep);
            font-size: 1.05rem;
            margin-bottom: 0.35rem;
        }
        .timeline-content p {
            font-size: 0.9rem;
            color: var(--color-text);
            margin: 0;
            line-height: 1.7;
        }
        .timeline-meta {
            font-size: 0.8rem;
            color: var(--color-muted);
            margin-top: 0.5rem;
        }

        /* Deep content */
        .deep-content-section {
            background: var(--color-surface);
        }
        .deep-content-block {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            margin-bottom: 2rem;
        }
        .deep-content-block:last-child {
            margin-bottom: 0;
        }
        .deep-content-block h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-deep);
            margin-bottom: 1.25rem;
            letter-spacing: -0.01em;
        }
        .deep-content-block p {
            font-size: 1rem;
            color: var(--color-text);
            line-height: 1.85;
            margin-bottom: 1rem;
        }
        .deep-content-block p:last-child {
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-section {
            background: var(--color-card);
        }
        .accordion-custom .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            background: var(--color-card);
            box-shadow: none;
            transition: all var(--transition);
        }
        .accordion-custom .accordion-item:hover {
            border-color: rgba(34, 211, 238, 0.3);
        }
        .accordion-custom .accordion-button {
            background: var(--color-card);
            color: var(--color-text-deep);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.25rem 1.5rem;
            border: none;
            box-shadow: none;
            border-radius: 0;
            transition: all var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--color-cyan-soft);
            color: var(--color-text-deep);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--color-cyan);
            outline-offset: -2px;
        }
        .accordion-custom .accordion-button::after {
            filter: brightness(0.3);
        }
        .accordion-custom .accordion-body {
            padding: 1.25rem 1.5rem 1.5rem;
            color: var(--color-text);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* CTA */
        .cta-section {
            background: var(--color-ink);
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: var(--font-size-h2);
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .cta-content p {
            font-size: 1.05rem;
            color: var(--color-body-on-dark);
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--color-ink);
            border-top: 1px solid var(--color-border-dark);
            padding: 4rem 0 0;
            color: var(--color-body-on-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 3rem;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 0.75rem;
        }
        .footer-brand span {
            color: var(--color-orange);
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--color-muted-on-dark);
            line-height: 1.7;
            max-width: 360px;
            margin: 0;
        }
        .footer-heading {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 0.75rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.45rem;
        }
        .footer-links a,
        .footer-links li {
            font-size: 0.875rem;
            color: var(--color-muted-on-dark);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding: 1.5rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: var(--color-muted-on-dark);
        }
        .footer-legal a:hover {
            color: var(--color-cyan);
        }

        /* Scroll reveal */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity var(--transition-slow), transform var(--transition-slow);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1200px) {
            .container-responsive {
                max-width: 100%;
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
        }
        @media (max-width: 1024px) {
            .nav-tabs-wrapper {
                gap: 0.25rem;
            }
            .chip-tag {
                padding: 0.3rem 0.75rem;
                font-size: 0.75rem;
            }
            .tournament-grid {
                grid-template-columns: 1fr;
            }
            .tournament-card-img {
                width: 140px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 992px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-tabs-wrapper {
                order: 3;
                width: 100%;
                overflow-x: auto;
                justify-content: flex-start;
                padding: 0.5rem 0 0.25rem;
                border-top: 1px solid var(--color-border-light);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: flex;
            }
            .desktop-cta {
                display: none;
            }
            .nav-tabs-wrapper {
                display: none;
            }
            .header-inner {
                flex-wrap: nowrap;
            }
            .mobile-nav-collapse.show {
                display: flex;
            }
            .category-hero {
                padding: 3rem 0 3.5rem;
            }
            .hero-stats-row {
                gap: 1.5rem;
            }
            .tournament-card {
                flex-direction: column;
                gap: 1rem;
            }
            .tournament-card-img {
                width: 100%;
                height: 200px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .deep-content-block {
                padding: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-section {
                top: 60px;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-padding-sm {
                padding: 2.5rem 0;
            }
        }
        @media (max-width: 575px) {
            .container-responsive {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .logo-text {
                font-size: 1.15rem;
            }
            .category-hero h1 {
                font-size: clamp(1.6rem, 7vw, 2.2rem);
            }
            .category-hero p {
                font-size: 1rem;
            }
            .hero-stat-num {
                font-size: 1.5rem;
            }
            .filter-row {
                gap: 0.35rem;
            }
            .filter-chip {
                padding: 0.3rem 0.8rem;
                font-size: 0.78rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
            .deep-content-block h3 {
                font-size: 1.25rem;
            }
            .accordion-custom .accordion-button {
                padding: 1rem 1.1rem;
                font-size: 0.9rem;
            }
            .accordion-custom .accordion-body {
                padding: 1rem 1.1rem 1.25rem;
                font-size: 0.875rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
            .reveal {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: category2 */
:root {
            --color-ink: #0B0F14;
            --color-ink-2: #161B22;
            --color-surface: #F5F7FA;
            --color-card: #FFFFFF;
            --color-cyan: #22D3EE;
            --color-cyan-soft: rgba(34, 211, 238, 0.12);
            --color-orange: #F97316;
            --color-orange-soft: rgba(249, 115, 22, 0.14);
            --color-text: #2A3038;
            --color-text-deep: #0B0F14;
            --color-muted: #6B7280;
            --color-border-light: rgba(0, 0, 0, 0.06);
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-text-on-dark: #F5F7FA;
            --color-body-on-dark: #D6DCE4;
            --color-muted-on-dark: #9CA3AF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-dark: 0 10px 30px rgba(0, 0, 0, 0.4);
            --spacing-base: 8px;
            --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
            --font-size-h1: clamp(2rem, 4.5vw, 3rem);
            --font-size-h2: clamp(1.5rem, 3vw, 2rem);
            --transition: 0.2s ease;
            --transition-slow: 0.6s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'Source Han Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-card);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-cyan);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.75rem 1.75rem;
            transition: all var(--transition);
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--color-orange);
            color: #ffffff;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:active {
            background-color: #e55f0a;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--color-cyan);
            border: 1px solid var(--color-cyan);
        }
        .btn-ghost-custom:hover,
        .btn-ghost-custom:active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--color-cyan);
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background-color: var(--color-ink);
            color: var(--color-text-on-dark);
        }
        .btn-dark-custom:hover,
        .btn-dark-custom:active {
            background-color: var(--color-ink-2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .btn-sm-custom {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg-custom {
            padding: 1rem 2.25rem;
            font-size: 1.125rem;
        }
        .badge-custom {
            display: inline-block;
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .badge-cyan {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }
        .badge-dark {
            background: var(--color-ink);
            color: #fff;
            border: 1px solid var(--color-ink);
        }
        .chip-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .chip-tag:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3.5rem 0;
        }
        .section-padding-xs {
            padding: 2.5rem 0;
        }
        .container-responsive {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            padding: 14px 0;
            gap: 20px;
            position: relative;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            background: var(--color-ink);
            color: var(--color-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-ink);
            letter-spacing: -0.02em;
        }
        .logo-text span {
            color: var(--color-cyan);
        }
        .hamburger-btn {
            display: none;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-sm);
            width: 42px;
            height: 42px;
            cursor: pointer;
            font-size: 1.1rem;
            color: var(--color-ink);
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            margin-left: auto;
        }
        .hamburger-btn:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
        }
        .nav-tabs-wrapper {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            flex: 1;
            padding: 4px;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs-wrapper::-webkit-scrollbar {
            display: none;
        }
        .header-cta.desktop-cta {
            flex-shrink: 0;
        }
        .mobile-nav-collapse {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border-light);
            padding: 16px 24px;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }
        .mobile-nav-collapse.open {
            display: flex;
        }
        .header-cta-mobile {
            margin-top: 8px;
        }
        /* Breadcrumb */
        .breadcrumb-section {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 16px 0;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.875rem;
            color: var(--color-muted);
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-custom li:not(:last-child)::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.6rem;
            color: var(--color-muted);
        }
        .breadcrumb-custom a {
            color: var(--color-muted);
            transition: color var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-cyan);
        }
        .breadcrumb-custom .current {
            color: var(--color-text-deep);
            font-weight: 600;
        }
        /* Hero */
        .hero-inner-page {
            background: linear-gradient(135deg, var(--color-ink) 0%, #0f1e24 55%, #113044 100%);
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
        .hero-inner-page::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-inner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--color-cyan);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .hero-inner-title {
            font-size: clamp(2rem, 4.5vw, 3rem);
            font-weight: 800;
            color: var(--color-text-on-dark);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }
        .hero-inner-title span {
            color: var(--color-cyan);
        }
        .hero-inner-desc {
            font-size: 1.1rem;
            color: var(--color-body-on-dark);
            max-width: 680px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .hero-inner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        /* Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }
        .metric-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .metric-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .metric-icon.orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border-color: rgba(249, 115, 22, 0.3);
        }
        .metric-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-ink);
            letter-spacing: -0.02em;
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .metric-value .unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-muted);
            margin-left: 4px;
        }
        .metric-label {
            font-size: 0.85rem;
            color: var(--color-muted);
            font-weight: 500;
        }
        /* Data trend cards */
        .data-trend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .trend-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .trend-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .trend-card-image {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .trend-card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
        }
        .trend-card-body {
            padding: 20px 24px 24px;
        }
        .trend-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 8px;
        }
        .trend-card-desc {
            font-size: 0.9rem;
            color: var(--color-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .trend-progress-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .trend-progress-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .trend-progress-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-text);
            min-width: 60px;
        }
        .trend-progress-bar-wrap {
            flex: 1;
            height: 8px;
            background: var(--color-surface);
            border-radius: var(--radius-pill);
            overflow: hidden;
        }
        .trend-progress-bar {
            height: 100%;
            border-radius: var(--radius-pill);
            background: var(--color-cyan);
            transition: width 1s ease;
        }
        .trend-progress-bar.orange {
            background: var(--color-orange);
        }
        .trend-progress-value {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--color-ink);
            min-width: 40px;
            text-align: right;
        }
        /* Data table */
        .data-table-section {
            background: var(--color-surface);
        }
        .data-table-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
        }
        .data-table-header {
            padding: 24px 28px;
            border-bottom: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .data-table-header h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-ink);
            margin: 0;
        }
        .table-custom {
            margin: 0;
            width: 100%;
            border-collapse: collapse;
        }
        .table-custom thead th {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            padding: 14px 18px;
            border: none;
            white-space: nowrap;
        }
        .table-custom tbody td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 0.9rem;
            color: var(--color-text);
            vertical-align: middle;
        }
        .table-custom tbody tr:hover td {
            background: var(--color-cyan-soft);
        }
        .table-custom tbody tr:last-child td {
            border-bottom: none;
        }
        .trend-up {
            color: #16a34a;
            font-weight: 600;
        }
        .trend-down {
            color: #dc2626;
            font-weight: 600;
        }
        .table-project-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-ink);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-cyan);
            font-size: 0.85rem;
        }
        /* Data dimensions */
        .dimension-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .dimension-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }
        .dimension-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .dimension-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-cyan-soft);
            border: 1px solid rgba(34, 211, 238, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0891b2;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .dimension-icon.orange {
            background: var(--color-orange-soft);
            border-color: rgba(249, 115, 22, 0.3);
            color: #c2410c;
        }
        .dimension-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 6px;
        }
        .dimension-content p {
            font-size: 0.9rem;
            color: var(--color-muted);
            margin: 0;
            line-height: 1.6;
        }
        /* Short-term observation */
        .observation-block {
            background: var(--color-ink);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            color: var(--color-body-on-dark);
        }
        .observation-block h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 20px;
        }
        .observation-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .observation-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .observation-bullet {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-cyan);
            margin-top: 8px;
            flex-shrink: 0;
        }
        .observation-bullet.orange {
            background: var(--color-orange);
        }
        .observation-item p {
            margin: 0;
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--color-body-on-dark);
        }
        .observation-item strong {
            color: var(--color-text-on-dark);
            font-weight: 700;
        }
        /* Reading method */
        .reading-method-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
        }
        .reading-method-steps {
            display: flex;
            flex-direction: column;
            gap: 24px;
            margin-top: 24px;
        }
        .reading-step {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .reading-step-num {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-pill);
            background: var(--color-ink);
            color: var(--color-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .reading-step-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 4px;
        }
        .reading-step-content p {
            font-size: 0.9rem;
            color: var(--color-muted);
            margin: 0;
            line-height: 1.65;
        }
        /* FAQ */
        .accordion-custom .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--color-card);
        }
        .accordion-custom .accordion-button {
            background: var(--color-card);
            color: var(--color-ink);
            font-weight: 700;
            font-size: 1rem;
            padding: 20px 24px;
            border-radius: var(--radius-md) !important;
            box-shadow: none;
            transition: all var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--color-cyan-soft);
            color: #0891b2;
            box-shadow: none;
            border-bottom: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--color-cyan);
            outline-offset: -2px;
        }
        .accordion-custom .accordion-button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background-image: none;
            color: var(--color-muted);
            transition: transform var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: #0891b2;
        }
        .accordion-custom .accordion-body {
            padding: 20px 24px 24px;
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.75;
            background: var(--color-card);
        }
        /* CTA */
        .cta-section-dark {
            background: linear-gradient(135deg, var(--color-ink) 0%, #0f1e24 60%, #113044 100%);
            padding: 5rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section-dark::before {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-inner p {
            color: var(--color-body-on-dark);
            font-size: 0.95rem;
            margin: 0;
            max-width: 520px;
            line-height: 1.7;
        }
        /* Footer */
        .site-footer {
            background: var(--color-ink);
            color: var(--color-body-on-dark);
            padding: 4rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--color-border-dark);
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }
        .footer-brand span {
            color: var(--color-cyan);
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--color-muted-on-dark);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }
        .footer-heading {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--color-muted-on-dark);
        }
        .footer-links a {
            color: var(--color-muted-on-dark);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-cyan);
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: var(--color-muted-on-dark);
            transition: color var(--transition);
        }
        .footer-legal a:hover {
            color: var(--color-cyan);
        }
        /* Scroll reveal */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            html {
                scroll-behavior: auto;
            }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-trend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: flex;
            }
            .nav-tabs-wrapper {
                display: none;
            }
            .header-cta.desktop-cta {
                display: none;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }
            .dimension-list {
                grid-template-columns: 1fr;
            }
            .data-trend-grid {
                grid-template-columns: 1fr;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .metrics-grid {
                margin-top: 20px;
            }
            .hero-inner-page {
                padding: 4rem 0 3rem;
            }
            .section-padding {
                padding: 3.5rem 0;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 576px) {
            .container-responsive {
                padding-left: 16px;
                padding-right: 16px;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-inner-title {
                font-size: 1.8rem;
            }
            .hero-inner-desc {
                font-size: 1rem;
            }
            .trend-card-image {
                height: 150px;
            }
            .data-table-header {
                padding: 16px 18px;
            }
            .table-custom thead th,
            .table-custom tbody td {
                padding: 10px 12px;
                font-size: 0.78rem;
            }
            .observation-block {
                padding: 28px 22px;
            }
            .reading-method-card {
                padding: 24px 20px;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 375px) {
            .container-responsive {
                padding-left: 12px;
                padding-right: 12px;
            }
            .hero-inner-title {
                font-size: 1.5rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-ink: #0B0F14;
            --color-ink-2: #161B22;
            --color-surface: #F5F7FA;
            --color-card: #FFFFFF;
            --color-cyan: #22D3EE;
            --color-cyan-soft: rgba(34, 211, 238, 0.12);
            --color-orange: #F97316;
            --color-orange-soft: rgba(249, 115, 22, 0.14);
            --color-text: #2A3038;
            --color-text-deep: #0B0F14;
            --color-muted: #6B7280;
            --color-border-light: rgba(0, 0, 0, 0.06);
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-text-on-dark: #F5F7FA;
            --color-body-on-dark: #D6DCE4;
            --color-muted-on-dark: #9CA3AF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-dark: 0 10px 30px rgba(0, 0, 0, 0.4);
            --spacing-base: 8px;
            --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
            --font-size-h1: clamp(2rem, 4.5vw, 3rem);
            --font-size-h2: clamp(1.5rem, 3vw, 2rem);
            --transition: 0.2s ease;
            --transition-slow: 0.6s ease;
        }
        html {
            scroll-behavior: auto;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'Source Han Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-card);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-cyan);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.75rem 1.75rem;
            transition: all var(--transition);
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--color-orange);
            color: #ffffff;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:active {
            background-color: #e55f0a;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--color-cyan);
            border: 1px solid var(--color-cyan);
        }
        .btn-ghost-custom:hover,
        .btn-ghost-custom:active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--color-cyan);
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background-color: var(--color-ink);
            color: var(--color-text-on-dark);
        }
        .btn-dark-custom:hover,
        .btn-dark-custom:active {
            background-color: var(--color-ink-2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .btn-sm-custom {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg-custom {
            padding: 1rem 2.25rem;
            font-size: 1.125rem;
        }
        .badge-custom {
            display: inline-block;
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .badge-cyan {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }
        .badge-dark {
            background: var(--color-ink);
            color: #fff;
            border: 1px solid var(--color-ink);
        }
        .badge-green {
            background: rgba(163, 230, 53, 0.18);
            color: #4d7c0f;
            border: 1px solid rgba(163, 230, 53, 0.4);
        }
        .badge-red {
            background: rgba(239, 68, 68, 0.12);
            color: #b91c1c;
            border: 1px solid rgba(239, 68, 68, 0.3);
        }
        .chip-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .chip-tag:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3.5rem 0;
        }
        .section-padding-xs {
            padding: 2.5rem 0;
        }
        .container-responsive {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-cyan);
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 700;
            color: var(--color-text-deep);
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }
        .section-desc {
            color: var(--color-muted);
            font-size: 1rem;
            line-height: 1.75;
            max-width: 720px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            padding: 0.75rem 0;
            flex-wrap: nowrap;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--color-ink);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-cyan);
            font-size: 1rem;
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-text-deep);
            letter-spacing: -0.02em;
        }
        .logo-text span {
            color: var(--color-orange);
        }
        .nav-tabs-wrapper {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex: 1;
            justify-content: center;
        }
        .nav-tabs-wrapper::-webkit-scrollbar {
            display: none;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-sm);
            width: 40px;
            height: 40px;
            font-size: 1.2rem;
            color: var(--color-text-deep);
            cursor: pointer;
            transition: all var(--transition);
            align-items: center;
            justify-content: center;
        }
        .hamburger-btn:hover {
            background: var(--color-surface);
        }
        .mobile-nav-collapse {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border-light);
            padding: 1rem 1.5rem;
            flex-direction: column;
            gap: 0.5rem;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        .mobile-nav-collapse.show {
            display: flex;
        }
        .header-cta-mobile {
            margin-top: 0.5rem;
            text-align: center;
            width: 100%;
        }
        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--color-surface);
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .breadcrumb-custom {
            font-size: 0.85rem;
            color: var(--color-muted);
            margin: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            list-style: none;
            padding: 0;
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb-custom a {
            color: var(--color-muted);
            transition: color var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-cyan);
        }
        .breadcrumb-custom .current {
            color: var(--color-text-deep);
            font-weight: 600;
        }
        .breadcrumb-custom .separator {
            color: #c0c5cc;
            font-size: 0.7rem;
        }
        /* Page Hero */
        .page-hero-roster {
            background: linear-gradient(135deg, #0B0F14 0%, #161B22 60%, #1a2a35 100%);
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
        }
        .page-hero-roster::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.18) 0%, transparent 65%);
            pointer-events: none;
        }
        .page-hero-roster::before {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .page-hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(34, 211, 238, 0.12);
            color: var(--color-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.3rem 0.9rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            align-self: flex-start;
        }
        .page-hero-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--color-text-on-dark);
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin: 0;
        }
        .page-hero-title span {
            color: var(--color-cyan);
        }
        .page-hero-desc {
            color: var(--color-body-on-dark);
            font-size: 1.05rem;
            line-height: 1.8;
            max-width: 680px;
            margin: 0;
        }
        .page-hero-stats {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
            margin-top: 0.5rem;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.15rem;
        }
        .hero-stat-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .hero-stat-num em {
            font-style: normal;
            font-size: 0.9rem;
            color: var(--color-cyan);
            font-weight: 600;
        }
        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }
        /* Filter section */
        .filter-section {
            background: var(--color-card);
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .filter-inner {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-right: 0.5rem;
            flex-shrink: 0;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            border-radius: var(--radius-pill);
            padding: 0.3rem 0.9rem;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--color-cyan);
            color: #0891b2;
            background: var(--color-cyan-soft);
        }
        .filter-chip.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
        }
        /* Roster team cards */
        .team-horizontal-card {
            display: flex;
            flex-direction: column;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }
        .team-horizontal-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .team-card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .team-horizontal-card:hover .team-card-image {
            transform: scale(1.05);
        }
        .team-card-body {
            padding: 1.25rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            flex: 1;
        }
        .team-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .team-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-deep);
            line-height: 1.3;
        }
        .team-game-tag {
            display: inline-block;
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-radius: var(--radius-pill);
            padding: 0.2rem 0.7rem;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .team-card-desc {
            color: var(--color-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
        }
        .team-card-stats {
            display: flex;
            gap: 1.25rem;
            flex-wrap: wrap;
            padding-top: 0.75rem;
            border-top: 1px solid var(--color-border-light);
        }
        .team-stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.1rem;
        }
        .team-stat-value {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-deep);
            line-height: 1.2;
        }
        .team-stat-value.positive {
            color: #16a34a;
        }
        .team-stat-value.negative {
            color: #dc2626;
        }
        .team-stat-label {
            font-size: 0.75rem;
            color: var(--color-muted);
        }
        /* Player section */
        .player-feature-card {
            display: flex;
            flex-direction: column;
            background: var(--color-ink);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-dark);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-card-dark);
            height: 100%;
        }
        .player-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
        }
        .player-feature-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }
        .player-feature-body {
            padding: 1.25rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            flex: 1;
        }
        .player-feature-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
        }
        .player-feature-role {
            font-size: 0.8rem;
            color: var(--color-cyan);
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .player-feature-desc {
            color: var(--color-body-on-dark);
            font-size: 0.9rem;
            line-height: 1.65;
            margin: 0;
        }
        .player-feature-stats {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            padding-top: 0.7rem;
            border-top: 1px solid var(--color-border-dark);
        }
        .p-stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.1rem;
        }
        .p-stat-value {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
        }
        .p-stat-label {
            font-size: 0.72rem;
            color: var(--color-muted-on-dark);
        }
        /* Trend table */
        .trend-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            background: var(--color-card);
            box-shadow: var(--shadow-card);
        }
        .trend-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
            font-size: 0.9rem;
        }
        .trend-table thead th {
            background: var(--color-surface);
            color: var(--color-text-deep);
            font-weight: 600;
            font-size: 0.78rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            padding: 0.9rem 1.25rem;
            text-align: left;
            border-bottom: 1px solid var(--color-border-light);
            white-space: nowrap;
        }
        .trend-table tbody td {
            padding: 0.9rem 1.25rem;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text);
            white-space: nowrap;
        }
        .trend-table tbody tr:last-child td {
            border-bottom: none;
        }
        .trend-table tbody tr:hover {
            background: #fafbfc;
        }
        .trend-up {
            color: #16a34a;
            font-weight: 600;
        }
        .trend-down {
            color: #dc2626;
            font-weight: 600;
        }
        /* Deep content */
        .deep-content-block {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 2rem 2.25rem;
            border: 1px solid var(--color-border-light);
            margin-bottom: 1.5rem;
        }
        .deep-content-block h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text-deep);
            line-height: 1.35;
            margin-bottom: 1rem;
        }
        .deep-content-block p {
            color: var(--color-text);
            line-height: 1.85;
            margin-bottom: 1rem;
            font-size: 0.98rem;
        }
        .deep-content-block p:last-child {
            margin-bottom: 0;
        }
        /* FAQ */
        .faq-section {
            background: var(--color-surface);
        }
        .accordion-custom .accordion-item {
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.75rem;
            overflow: hidden;
        }
        .accordion-custom .accordion-header .accordion-button {
            background: var(--color-card);
            color: var(--color-text-deep);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.1rem 1.5rem;
            border: none;
            box-shadow: none;
            transition: all var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--color-cyan-soft);
            color: #0891b2;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--color-cyan);
        }
        .accordion-custom .accordion-button::after {
            content: '+';
            background-image: none;
            font-weight: 400;
            font-size: 1.3rem;
            color: inherit;
            width: auto;
            height: auto;
            transition: transform var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '−';
            transform: rotate(0deg);
        }
        .accordion-custom .accordion-body {
            padding: 1.1rem 1.5rem 1.4rem;
            color: var(--color-muted);
            line-height: 1.8;
            font-size: 0.95rem;
            border-top: 1px solid var(--color-border-light);
        }
        /* CTA */
        .cta-section {
            background: var(--color-ink);
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -100px;
            left: 10%;
            width: 500px;
            height: 300px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.14) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
        }
        .cta-title {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin: 0;
        }
        .cta-desc {
            color: var(--color-body-on-dark);
            font-size: 1rem;
            max-width: 560px;
            line-height: 1.7;
            margin: 0;
        }
        .cta-actions {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 0.5rem;
        }
        /* Footer */
        .site-footer {
            background: var(--color-ink);
            color: var(--color-body-on-dark);
            padding: 3.5rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .footer-brand span {
            color: var(--color-orange);
        }
        .footer-desc {
            color: var(--color-muted-on-dark);
            line-height: 1.7;
            font-size: 0.88rem;
            max-width: 320px;
            margin: 0;
        }
        .footer-heading {
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-links li {
            color: var(--color-muted-on-dark);
            font-size: 0.88rem;
        }
        .footer-links a {
            color: var(--color-muted-on-dark);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding-top: 1.25rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }
        .footer-legal {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .footer-legal a {
            color: var(--color-muted-on-dark);
            transition: color var(--transition);
        }
        .footer-legal a:hover {
            color: var(--color-cyan);
        }
        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            html {
                scroll-behavior: auto;
            }
        }
        /* Responsive */
        @media (max-width: 992px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 0.75rem;
            }
            .nav-tabs-wrapper {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 0.25rem;
            }
            .hamburger-btn {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .nav-tabs-wrapper {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .header-cta.desktop-cta {
                display: none;
            }
            .page-hero-roster {
                padding: 2.5rem 0 2rem;
            }
            .page-hero-stats {
                gap: 1.25rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-padding-sm {
                padding: 2.5rem 0;
            }
            .deep-content-block {
                padding: 1.5rem 1.25rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.75rem;
            }
        }
        @media (max-width: 576px) {
            .container-responsive {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .page-hero-title {
                font-size: 1.6rem;
            }
            .team-card-body {
                padding: 1rem 1.1rem 1.25rem;
            }
            .player-feature-body {
                padding: 1rem 1.1rem 1.25rem;
            }
            .filter-inner {
                gap: 0.35rem;
            }
            .filter-chip {
                font-size: 0.72rem;
                padding: 0.25rem 0.75rem;
            }
            .cta-actions .btn {
                padding: 0.65rem 1.4rem;
                font-size: 0.85rem;
            }
        }

/* roulang page: category4 */
:root {
            --color-ink: #0B0F14;
            --color-ink-2: #161B22;
            --color-surface: #F5F7FA;
            --color-card: #FFFFFF;
            --color-cyan: #22D3EE;
            --color-cyan-soft: rgba(34, 211, 238, 0.12);
            --color-orange: #F97316;
            --color-orange-soft: rgba(249, 115, 22, 0.14);
            --color-text: #2A3038;
            --color-text-deep: #0B0F14;
            --color-muted: #6B7280;
            --color-border-light: rgba(0, 0, 0, 0.06);
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-text-on-dark: #F5F7FA;
            --color-body-on-dark: #D6DCE4;
            --color-muted-on-dark: #9CA3AF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-dark: 0 10px 30px rgba(0, 0, 0, 0.4);
            --spacing-base: 8px;
            --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
            --font-size-h1: clamp(2rem, 4.5vw, 3rem);
            --font-size-h2: clamp(1.5rem, 3vw, 2rem);
            --transition: 0.2s ease;
            --transition-slow: 0.6s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'Source Han Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-card);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-cyan);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.75rem 1.75rem;
            transition: all var(--transition);
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--color-orange);
            color: #ffffff;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:active {
            background-color: #e55f0a;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--color-cyan);
            border: 1px solid var(--color-cyan);
        }
        .btn-ghost-custom:hover,
        .btn-ghost-custom:active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--color-cyan);
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background-color: var(--color-ink);
            color: var(--color-text-on-dark);
        }
        .btn-dark-custom:hover,
        .btn-dark-custom:active {
            background-color: var(--color-ink-2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .btn-sm-custom {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg-custom {
            padding: 1rem 2.25rem;
            font-size: 1.125rem;
        }
        .badge-custom {
            display: inline-block;
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .badge-cyan {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }
        .badge-dark {
            background: var(--color-ink);
            color: #fff;
            border: 1px solid var(--color-ink);
        }
        .chip-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .chip-tag:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3.5rem 0;
        }
        .container-responsive {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
            flex-wrap: nowrap;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-ink);
            color: var(--color-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text-deep);
            line-height: 1;
        }
        .logo-text span {
            color: var(--color-orange);
        }
        .nav-tabs-wrapper {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex-wrap: wrap;
            flex: 1;
            justify-content: center;
        }
        .nav-tabs-wrapper .chip-tag {
            font-size: 0.78rem;
            padding: 0.3rem 0.9rem;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .desktop-cta {
            display: block;
        }
        .header-cta-mobile {
            display: inline-flex;
            margin-top: 0.75rem;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: var(--color-text-deep);
            font-size: 1.5rem;
            padding: 0.35rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
            cursor: pointer;
            flex-shrink: 0;
        }
        .hamburger-btn:hover {
            background: var(--color-surface);
        }
        .mobile-nav-collapse {
            display: none;
            flex-direction: column;
            gap: 0.5rem;
            padding: 1rem 0 1.25rem;
            border-top: 1px solid var(--color-border-light);
            margin-top: 0.5rem;
            width: 100%;
        }
        .mobile-nav-collapse.open {
            display: flex;
        }
        .mobile-nav-collapse .chip-tag {
            width: 100%;
            justify-content: center;
        }
        .mobile-nav-collapse .btn {
            width: 100%;
            justify-content: center;
        }
        .breadcrumb-wrap {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0.75rem 0;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.85rem;
            color: var(--color-muted);
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb-custom li:not(:last-child)::after {
            content: '/';
            color: var(--color-muted);
            font-size: 0.75rem;
        }
        .breadcrumb-custom a {
            color: var(--color-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-cyan);
        }
        .strategy-hero {
            background: var(--color-ink);
            padding: 4rem 0 3.5rem;
            position: relative;
            overflow: hidden;
        }
        .strategy-hero::after {
            content: '';
            position: absolute;
            right: -10%;
            top: 50%;
            transform: translateY(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12), transparent 70%);
            pointer-events: none;
        }
        .strategy-hero h1 {
            font-size: var(--font-size-h1);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            color: var(--color-text-on-dark);
            margin-bottom: 1rem;
        }
        .strategy-hero p {
            color: var(--color-body-on-dark);
            font-size: 1.1rem;
            max-width: 720px;
            line-height: 1.8;
        }
        .strategy-hero .badge-custom {
            margin-bottom: 1rem;
        }
        .strategy-main {
            padding: 4rem 0;
            background: var(--color-card);
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 2.5rem;
            align-items: start;
        }
        .strategy-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .strategy-card {
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: grid;
            grid-template-columns: 260px 1fr;
            min-height: 200px;
        }
        .strategy-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .strategy-card-img {
            position: relative;
            overflow: hidden;
            min-height: 200px;
            background: var(--color-surface);
        }
        .strategy-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .strategy-card:hover .strategy-card-img img {
            transform: scale(1.05);
        }
        .strategy-card-body {
            padding: 1.5rem 1.75rem;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .strategy-card-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--color-muted);
        }
        .strategy-card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text-deep);
            line-height: 1.4;
            margin: 0;
        }
        .strategy-card-summary {
            color: var(--color-text);
            font-size: 0.95rem;
            line-height: 1.75;
            margin: 0;
            flex: 1;
        }
        .strategy-card .read-more-link {
            align-self: flex-start;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-orange);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            transition: all var(--transition);
        }
        .strategy-card .read-more-link i {
            transition: transform var(--transition);
        }
        .strategy-card .read-more-link:hover {
            color: #e55f0a;
        }
        .strategy-card .read-more-link:hover i {
            transform: translateX(4px);
        }
        .strategy-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-card {
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-deep);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-card h3 i {
            color: var(--color-cyan);
        }
        .tag-pool {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag-pool .tag-item {
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-text);
            transition: all var(--transition);
            cursor: pointer;
        }
        .tag-pool .tag-item:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .sidebar-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .sidebar-links li a {
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.6;
            transition: color var(--transition);
        }
        .sidebar-links li a::before {
            content: '▸';
            color: var(--color-orange);
            flex-shrink: 0;
            margin-top: 0.1rem;
            font-size: 0.8rem;
        }
        .sidebar-links li a:hover {
            color: var(--color-cyan);
        }
        .version-timeline-section {
            background: var(--color-surface);
            padding: 4rem 0;
        }
        .version-timeline {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            margin-top: 2rem;
        }
        .version-item {
            display: grid;
            grid-template-columns: 90px 1fr;
            gap: 1.25rem;
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.5rem;
            transition: all var(--transition);
        }
        .version-item:hover {
            box-shadow: var(--shadow-card);
            border-color: rgba(34, 211, 238, 0.25);
        }
        .version-date {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--color-orange);
            letter-spacing: 0.04em;
            padding-top: 0.2rem;
        }
        .version-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-deep);
            margin-bottom: 0.4rem;
        }
        .version-info p {
            color: var(--color-muted);
            font-size: 0.9rem;
            margin: 0;
        }
        .faq-section {
            background: var(--color-card);
            padding: 4rem 0;
        }
        .accordion-custom .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.75rem;
            overflow: hidden;
            box-shadow: none;
            background: var(--color-card);
        }
        .accordion-custom .accordion-button {
            background: var(--color-card);
            color: var(--color-text-deep);
            font-weight: 700;
            font-size: 1rem;
            padding: 1.25rem 1.5rem;
            border-radius: 0;
            border: none;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--color-cyan-soft);
            color: #0891b2;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--color-cyan);
            outline-offset: -2px;
        }
        .accordion-custom .accordion-button::after {
            filter: brightness(0.5);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            filter: none;
            color: #0891b2;
        }
        .accordion-custom .accordion-body {
            padding: 1rem 1.5rem 1.5rem;
            color: var(--color-muted);
            line-height: 1.8;
            background: var(--color-card);
        }
        .cta-section {
            background: var(--color-ink);
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            left: -10%;
            top: 50%;
            transform: translateY(-50%);
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.14), transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: var(--font-size-h2);
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            color: var(--color-body-on-dark);
            font-size: 1.05rem;
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }
        .site-footer {
            background: var(--color-ink);
            color: var(--color-body-on-dark);
            padding: 3.5rem 0 1.5rem;
            border-top: 1px solid var(--color-border-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .footer-brand span {
            color: var(--color-orange);
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--color-muted-on-dark);
            line-height: 1.8;
            max-width: 360px;
            margin-bottom: 0;
        }
        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            font-size: 0.85rem;
        }
        .footer-links li,
        .footer-links li a {
            color: var(--color-muted-on-dark);
            transition: color var(--transition);
        }
        .footer-links li a:hover {
            color: var(--color-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding-top: 1.25rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: var(--color-muted-on-dark);
        }
        .footer-legal a:hover {
            color: var(--color-cyan);
        }
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity var(--transition-slow), transform var(--transition-slow);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            .strategy-card,
            .strategy-card-img img,
            .version-item,
            .btn,
            .chip-tag,
            a,
            .tag-item {
                transition: none;
            }
            .strategy-card:hover,
            .strategy-card:hover .strategy-card-img img,
            .btn:hover,
            .chip-tag:hover,
            .tag-item:hover {
                transform: none;
            }
        }
        @media (max-width: 1200px) {
            .container-responsive {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr 300px;
                gap: 2rem;
            }
            .strategy-card {
                grid-template-columns: 220px 1fr;
            }
        }
        @media (max-width: 992px) {
            .nav-tabs-wrapper {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .desktop-cta {
                display: none;
            }
            .header-inner {
                gap: 1rem;
                flex-wrap: wrap;
            }
            .logo-area {
                flex: 1;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .strategy-sidebar {
                position: relative;
                top: auto;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .strategy-card {
                grid-template-columns: 1fr;
            }
            .strategy-card-img {
                min-height: 180px;
                max-height: 220px;
            }
            .strategy-sidebar {
                grid-template-columns: 1fr;
            }
            .section-padding,
            .section-padding-sm {
                padding: 3rem 0;
            }
            .strategy-hero {
                padding: 2.5rem 0 2rem;
            }
        }
        @media (max-width: 576px) {
            .container-responsive {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .strategy-card-body {
                padding: 1.25rem 1.25rem;
            }
            .strategy-card-title {
                font-size: 1.1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
            }
            .version-item {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }
            .version-date {
                padding-top: 0;
            }
            .strategy-hero h1 {
                font-size: 1.8rem;
            }
            .strategy-hero p {
                font-size: 1rem;
            }
        }

/* roulang page: category6 */
:root {
            --color-ink: #0B0F14;
            --color-ink-2: #161B22;
            --color-surface: #F5F7FA;
            --color-card: #FFFFFF;
            --color-cyan: #22D3EE;
            --color-cyan-soft: rgba(34, 211, 238, 0.12);
            --color-orange: #F97316;
            --color-orange-soft: rgba(249, 115, 22, 0.14);
            --color-text: #2A3038;
            --color-text-deep: #0B0F14;
            --color-muted: #6B7280;
            --color-border-light: rgba(0, 0, 0, 0.06);
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-text-on-dark: #F5F7FA;
            --color-body-on-dark: #D6DCE4;
            --color-muted-on-dark: #9CA3AF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-dark: 0 10px 30px rgba(0, 0, 0, 0.4);
            --spacing-base: 8px;
            --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
            --font-size-h1: clamp(2rem, 4.5vw, 3rem);
            --font-size-h2: clamp(1.5rem, 3vw, 2rem);
            --transition: 0.2s ease;
            --transition-slow: 0.6s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'Source Han Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-card);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-cyan);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.75rem 1.75rem;
            transition: all var(--transition);
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--color-orange);
            color: #ffffff;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:active {
            background-color: #e55f0a;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--color-cyan);
            border: 1px solid var(--color-cyan);
        }
        .btn-ghost-custom:hover,
        .btn-ghost-custom:active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--color-cyan);
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background-color: var(--color-ink);
            color: var(--color-text-on-dark);
        }
        .btn-dark-custom:hover,
        .btn-dark-custom:active {
            background-color: var(--color-ink-2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .btn-sm-custom {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg-custom {
            padding: 1rem 2.25rem;
            font-size: 1.125rem;
        }
        .badge-custom {
            display: inline-block;
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .badge-cyan {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }
        .badge-dark {
            background: var(--color-ink);
            color: #fff;
            border: 1px solid var(--color-ink);
        }
        .chip-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .chip-tag:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3.5rem 0;
        }
        .container-responsive {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 12px 0;
            flex-wrap: wrap;
            position: relative;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-ink);
            color: var(--color-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-text-deep);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-orange);
        }
        .nav-tabs-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
            flex: 1;
            min-width: 280px;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.2rem;
            color: var(--color-text-deep);
            cursor: pointer;
            transition: all var(--transition);
        }
        .hamburger-btn:hover {
            background: var(--color-surface);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .mobile-nav-collapse {
            display: none;
            flex-direction: column;
            gap: 8px;
            padding: 16px 0;
            width: 100%;
            background: #fff;
            border-top: 1px solid var(--color-border-light);
            margin-top: 12px;
        }
        .mobile-nav-collapse.show {
            display: flex;
        }
        .mobile-nav-collapse .chip-tag {
            justify-content: flex-start;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
        }
        .header-cta-mobile {
            margin-top: 8px;
            width: 100%;
            text-align: center;
        }
        .breadcrumb-custom {
            font-size: 0.875rem;
            color: var(--color-muted);
            padding: 16px 0 8px;
        }
        .breadcrumb-custom a {
            color: var(--color-muted);
            transition: color var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-cyan);
        }
        .breadcrumb-custom .separator {
            margin: 0 8px;
            color: var(--color-border-light);
        }
        .breadcrumb-custom .current {
            color: var(--color-text-deep);
            font-weight: 600;
        }
        .page-header-section {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            padding: 3.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .page-header-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 50%;
            height: 180%;
            background: radial-gradient(ellipse at center, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-header-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 35%;
            height: 130%;
            background: radial-gradient(ellipse at center, rgba(249, 115, 22, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-header-content {
            position: relative;
            z-index: 1;
        }
        .page-header-content h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--color-text-on-dark);
            margin-bottom: 16px;
        }
        .page-header-content .subtitle {
            font-size: 1.15rem;
            color: var(--color-body-on-dark);
            max-width: 680px;
            line-height: 1.75;
        }
        .page-header-content .header-meta {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 20px;
            font-size: 0.9rem;
            color: var(--color-muted-on-dark);
        }
        .page-header-content .header-meta i {
            color: var(--color-cyan);
            margin-right: 6px;
        }
        .topic-pool-section {
            background: var(--color-surface);
            padding: 2.5rem 0;
        }
        .topic-pool-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .topic-pool-title {
            font-weight: 700;
            color: var(--color-text-deep);
            font-size: 0.95rem;
            margin-right: 12px;
            flex-shrink: 0;
        }
        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            color: var(--color-text);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .topic-tag:hover {
            border-color: rgba(34, 211, 238, 0.4);
            color: #0891b2;
            background: var(--color-cyan-soft);
            transform: translateY(-2px);
        }
        .topic-tag.hot {
            background: var(--color-orange-soft);
            border-color: rgba(249, 115, 22, 0.3);
            color: #c2410c;
        }
        .topic-tag.hot:hover {
            background: rgba(249, 115, 22, 0.2);
            color: #c2410c;
        }
        .topic-tag .count {
            font-size: 0.7rem;
            opacity: 0.7;
            font-weight: 400;
        }
        .community-feed-section {
            background: var(--color-card);
        }
        .feed-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
            align-items: start;
        }
        .feed-main {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .feed-card {
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .feed-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, 0.2);
        }
        .feed-card.featured {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            border-color: var(--color-ink);
        }
        .feed-card.featured .feed-card-title {
            color: var(--color-text-on-dark);
            font-size: 1.4rem;
            line-height: 1.4;
        }
        .feed-card.featured .feed-card-excerpt {
            color: var(--color-body-on-dark);
            font-size: 1rem;
            line-height: 1.8;
        }
        .feed-card.featured .feed-card-meta {
            color: var(--color-muted-on-dark);
        }
        .feed-card.featured .feed-card-meta i {
            color: var(--color-cyan);
        }
        .feed-card-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .feed-card-author-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--color-cyan-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0891b2;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .feed-card.featured .feed-card-author-avatar {
            background: rgba(34, 211, 238, 0.2);
            color: var(--color-cyan);
        }
        .feed-card-author-info {
            flex: 1;
        }
        .feed-card-author-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--color-text-deep);
        }
        .feed-card.featured .feed-card-author-name {
            color: var(--color-text-on-dark);
        }
        .feed-card-author-role {
            font-size: 0.75rem;
            color: var(--color-muted);
        }
        .feed-card.featured .feed-card-author-role {
            color: var(--color-muted-on-dark);
        }
        .feed-card-badge {
            flex-shrink: 0;
        }
        .feed-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-deep);
            line-height: 1.5;
            margin-bottom: 10px;
            transition: color var(--transition);
        }
        .feed-card:hover .feed-card-title {
            color: var(--color-cyan);
        }
        .feed-card.featured:hover .feed-card-title {
            color: var(--color-cyan);
        }
        .feed-card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .feed-card-meta {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--color-muted);
            align-items: center;
        }
        .feed-card-meta i {
            margin-right: 5px;
            color: var(--color-cyan);
        }
        .feed-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 90px;
        }
        .sidebar-card {
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 20px;
        }
        .sidebar-card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-deep);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card-title i {
            color: var(--color-orange);
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-list-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--color-text);
            transition: color var(--transition);
            cursor: pointer;
        }
        .sidebar-list-item:hover {
            color: var(--color-cyan);
        }
        .sidebar-list-item i {
            color: var(--color-cyan);
            font-size: 0.7rem;
            margin-top: 6px;
            flex-shrink: 0;
        }
        .sidebar-list-item .meta-num {
            font-size: 0.7rem;
            color: var(--color-muted);
            margin-left: auto;
            flex-shrink: 0;
        }
        .community-stats-section {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            padding: 4rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 700;
            color: var(--color-cyan);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-muted-on-dark);
            margin-top: 6px;
        }
        .stat-label i {
            color: var(--color-orange);
            margin-right: 6px;
        }
        .community-guide-section {
            background: var(--color-surface);
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition);
        }
        .guide-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .guide-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--color-cyan-soft);
            color: #0891b2;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .guide-card:nth-child(2) .guide-card-icon {
            background: var(--color-orange-soft);
            color: #c2410c;
        }
        .guide-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-deep);
            margin-bottom: 10px;
        }
        .guide-card-text {
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.75;
        }
        .faq-community-section {
            background: var(--color-card);
        }
        .accordion-custom {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .accordion-item-custom {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-card);
            transition: all var(--transition);
        }
        .accordion-item-custom.active {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .accordion-header-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--color-text-deep);
            cursor: pointer;
            transition: all var(--transition);
            user-select: none;
        }
        .accordion-header-custom:hover {
            background: var(--color-surface);
        }
        .accordion-header-custom .accordion-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-surface);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--color-muted);
            transition: all var(--transition);
        }
        .accordion-item-custom.active .accordion-header-custom .accordion-icon {
            background: var(--color-cyan-soft);
            color: #0891b2;
            transform: rotate(180deg);
        }
        .accordion-body-custom {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }
        .accordion-item-custom.active .accordion-body-custom {
            max-height: 500px;
            padding: 0 20px 18px;
        }
        .accordion-body-custom p {
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.75;
            margin: 0;
        }
        .cta-community-section {
            background: var(--color-ink);
            color: var(--color-text-on-dark);
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-community-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 80%;
            height: 120%;
            background: radial-gradient(ellipse at center, rgba(34, 211, 238, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: var(--font-size-h2);
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .cta-content p {
            font-size: 1rem;
            color: var(--color-body-on-dark);
            line-height: 1.75;
            margin-bottom: 28px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .site-footer {
            background: var(--color-ink);
            color: var(--color-muted-on-dark);
            padding: 4rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }
        .footer-brand span {
            color: var(--color-orange);
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--color-muted-on-dark);
            line-height: 1.75;
        }
        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 0.85rem;
        }
        .footer-links a {
            color: var(--color-muted-on-dark);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-cyan);
        }
        .footer-links li {
            color: var(--color-muted-on-dark);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding: 16px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-muted-on-dark);
        }
        .footer-legal {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .footer-legal a {
            color: var(--color-muted-on-dark);
        }
        .footer-legal a:hover {
            color: var(--color-cyan);
        }
        .footer-legal span {
            color: var(--color-muted-on-dark);
        }
        @media (max-width: 991px) {
            .nav-tabs-wrapper {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .header-cta.desktop-cta {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .feed-layout {
                grid-template-columns: 1fr;
            }
            .feed-sidebar {
                position: static;
            }
        }
        @media (max-width: 767px) {
            .section-padding {
                padding: 3.5rem 0;
            }
            .section-padding-sm {
                padding: 2.5rem 0;
            }
            .page-header-content h1 {
                font-size: 1.8rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .footer-legal {
                justify-content: center;
            }
            .feed-card.featured .feed-card-title {
                font-size: 1.2rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-buttons .btn {
                width: 100%;
                max-width: 280px;
            }
            .container-responsive {
                padding: 0 16px;
            }
            .topic-pool-wrapper {
                gap: 8px;
            }
        }
        @media (max-width: 519px) {
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .header-inner {
                gap: 12px;
            }
            .logo-text {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .page-header-content .subtitle {
                font-size: 1rem;
            }
            .page-header-content .header-meta {
                gap: 12px;
                font-size: 0.8rem;
            }
            .feed-card {
                padding: 16px;
            }
            .feed-card-title {
                font-size: 1rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category5 */
:root {
            --color-ink: #0B0F14;
            --color-ink-2: #161B22;
            --color-surface: #F5F7FA;
            --color-card: #FFFFFF;
            --color-cyan: #22D3EE;
            --color-cyan-soft: rgba(34, 211, 238, 0.12);
            --color-orange: #F97316;
            --color-orange-soft: rgba(249, 115, 22, 0.14);
            --color-text: #2A3038;
            --color-text-deep: #0B0F14;
            --color-muted: #6B7280;
            --color-border-light: rgba(0, 0, 0, 0.06);
            --color-border-dark: rgba(255, 255, 255, 0.08);
            --color-text-on-dark: #F5F7FA;
            --color-body-on-dark: #D6DCE4;
            --color-muted-on-dark: #9CA3AF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.16);
            --shadow-card-dark: 0 10px 30px rgba(0, 0, 0, 0.4);
            --spacing-base: 8px;
            --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
            --font-size-h1: clamp(2rem, 4.5vw, 3rem);
            --font-size-h2: clamp(1.5rem, 3vw, 2rem);
            --transition: 0.2s ease;
            --transition-slow: 0.6s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'Source Han Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-card);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-cyan);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.75rem 1.75rem;
            transition: all var(--transition);
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--color-orange);
            color: #ffffff;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:active {
            background-color: #e55f0a;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--color-cyan);
            border: 1px solid var(--color-cyan);
        }
        .btn-ghost-custom:hover,
        .btn-ghost-custom:active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--color-cyan);
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background-color: var(--color-ink);
            color: var(--color-text-on-dark);
        }
        .btn-dark-custom:hover,
        .btn-dark-custom:active {
            background-color: var(--color-ink-2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .btn-sm-custom {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg-custom {
            padding: 1rem 2.25rem;
            font-size: 1.125rem;
        }
        .badge-custom {
            display: inline-block;
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .badge-cyan {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-orange {
            background: var(--color-orange-soft);
            color: #c2410c;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }
        .badge-dark {
            background: var(--color-ink);
            color: #fff;
            border: 1px solid var(--color-ink);
        }
        .chip-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: var(--radius-pill);
            padding: 0.35rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            color: var(--color-muted);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .chip-tag:hover {
            background: var(--color-cyan-soft);
            color: #0891b2;
            border-color: rgba(34, 211, 238, 0.4);
        }
        .chip-tag.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3.5rem 0;
        }
        .section-padding-xs {
            padding: 2.5rem 0;
        }
        .container-responsive {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 1rem;
            min-height: 68px;
            flex-wrap: wrap;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-ink);
            color: var(--color-cyan);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }
        .logo-text {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--color-text-deep);
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-cyan);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text-deep);
            cursor: pointer;
            padding: 0.5rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
            margin-left: auto;
        }
        .hamburger-btn:hover {
            background: var(--color-surface);
        }
        .nav-tabs-wrapper {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }
        .desktop-cta {
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }
        .mobile-nav-collapse {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 0.5rem;
            padding: 1rem 0;
        }
        .header-cta-mobile {
            width: 100%;
            text-align: center;
            margin-top: 0.5rem;
        }
        @media (max-width: 992px) {
            .nav-tabs-wrapper {
                display: none;
            }
            .desktop-cta {
                display: none;
            }
            .hamburger-btn {
                display: inline-flex;
            }
            .mobile-nav-collapse.open {
                display: flex;
            }
        }
        .breadcrumb-wrap {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0.85rem 0;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.875rem;
            color: var(--color-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb-custom li:not(:last-child)::after {
            content: "›";
            color: var(--color-muted);
            margin-left: 0.25rem;
        }
        .breadcrumb-custom a {
            color: var(--color-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-cyan);
        }
        .breadcrumb-custom .current {
            color: var(--color-text-deep);
            font-weight: 600;
        }
        .page-banner {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 4.5rem 0;
            color: #fff;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 15, 20, 0.92) 0%, rgba(11, 15, 20, 0.75) 100%);
        }
        .page-banner .container-responsive {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: var(--font-size-h1);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
            color: var(--color-text-on-dark);
        }
        .page-banner .banner-sub {
            font-size: 1.15rem;
            color: var(--color-body-on-dark);
            max-width: 750px;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.875rem;
            color: var(--color-muted-on-dark);
        }
        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .banner-meta i {
            color: var(--color-cyan);
        }
        .stat-strip {
            background: var(--color-ink);
            color: #fff;
            padding: 2.5rem 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: clamp(2rem, 4vw, 2.75rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--color-cyan);
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-muted-on-dark);
            margin-top: 0.5rem;
        }
        .calendar-section {
            background: var(--color-surface);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
        }
        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text-deep);
            margin-bottom: 0.5rem;
            line-height: 1.2;
        }
        .section-desc {
            color: var(--color-muted);
            max-width: 650px;
            font-size: 1rem;
            line-height: 1.8;
        }
        .date-nav {
            display: flex;
            gap: 0.5rem;
            overflow-x: auto;
            padding-bottom: 0.5rem;
            margin-bottom: 2rem;
            scrollbar-width: thin;
        }
        .date-chip {
            flex-shrink: 0;
            padding: 0.6rem 1.25rem;
            border-radius: var(--radius-md);
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-muted);
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            min-width: 80px;
        }
        .date-chip .day-name {
            display: block;
            font-size: 0.7rem;
            color: var(--color-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }
        .date-chip .day-num {
            display: block;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-text-deep);
        }
        .date-chip:hover {
            border-color: var(--color-cyan);
            color: #0891b2;
            transform: translateY(-2px);
        }
        .date-chip.active {
            background: var(--color-ink);
            color: #fff;
            border-color: var(--color-ink);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }
        .date-chip.active .day-name,
        .date-chip.active .day-num {
            color: #fff;
        }
        .date-chip .has-event {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-orange);
            margin-top: 0.25rem;
        }
        .date-chip.active .has-event {
            background: var(--color-cyan);
        }
        .filter-chips {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }
        .filter-chip {
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-pill);
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-muted);
            cursor: pointer;
            transition: all var(--transition);
        }
        .filter-chip:hover {
            border-color: var(--color-cyan);
            color: #0891b2;
        }
        .filter-chip.active {
            background: var(--color-orange);
            color: #fff;
            border-color: var(--color-orange);
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
        }
        .schedule-timeline {
            position: relative;
        }
        .schedule-timeline::before {
            content: "";
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border-light);
        }
        .timeline-item {
            position: relative;
            padding-left: 60px;
            margin-bottom: 1.5rem;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: 18px;
            top: 18px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-card);
            border: 3px solid var(--color-cyan);
            z-index: 1;
        }
        .timeline-item.ended::before {
            border-color: var(--color-muted);
            background: var(--color-surface);
        }
        .timeline-item.live::before {
            border-color: var(--color-orange);
            background: var(--color-orange-soft);
            box-shadow: 0 0 0 5px rgba(249, 115, 22, 0.15);
        }
        .timeline-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 1.25rem 1.5rem;
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .timeline-card .match-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 0.75rem;
        }
        .match-time {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-text-deep);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .match-status {
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .match-status.upcoming {
            color: #0891b2;
        }
        .match-status.live {
            color: var(--color-orange);
        }
        .match-status.ended {
            color: var(--color-muted);
        }
        .match-body {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .match-teams {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            flex: 1;
            min-width: 180px;
        }
        .team-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text-deep);
            white-space: nowrap;
        }
        .team-name.winner {
            color: var(--color-orange);
        }
        .match-vs {
            font-weight: 800;
            color: var(--color-muted);
            font-size: 0.9rem;
        }
        .match-score {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--color-text-deep);
            background: var(--color-surface);
            padding: 0.35rem 0.85rem;
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }
        .match-meta {
            font-size: 0.8rem;
            color: var(--color-muted);
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-top: 0.5rem;
        }
        .match-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .match-thumb {
            flex-shrink: 0;
            width: 90px;
            height: 60px;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .match-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .results-section {
            background: var(--color-card);
        }
        .results-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .result-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.9rem 1.25rem;
            background: var(--color-surface);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .result-row:hover {
            background: var(--color-cyan-soft);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .result-date {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-muted);
            white-space: nowrap;
            min-width: 70px;
        }
        .result-teams {
            flex: 1;
            font-weight: 600;
            color: var(--color-text-deep);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .result-score {
            font-weight: 800;
            color: var(--color-orange);
            white-space: nowrap;
        }
        .result-stage {
            font-size: 0.75rem;
            color: var(--color-muted);
            white-space: nowrap;
        }
        .subscription-cta {
            background: var(--color-ink);
            color: #fff;
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }
        .subscription-cta::after {
            content: "";
            position: absolute;
            right: -100px;
            top: -100px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 70%);
        }
        .subscription-cta .container-responsive {
            position: relative;
            z-index: 1;
        }
        .subscription-cta h2 {
            font-size: var(--font-size-h2);
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 0.75rem;
        }
        .subscription-cta p {
            color: var(--color-body-on-dark);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }
        .subscription-form {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            max-width: 520px;
        }
        .subscription-form input {
            flex: 1;
            min-width: 220px;
            padding: 0.8rem 1.25rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-dark);
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text-on-dark);
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .subscription-form input::placeholder {
            color: var(--color-muted-on-dark);
        }
        .subscription-form input:focus {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-color: var(--color-cyan);
            background: rgba(255, 255, 255, 0.1);
        }
        .faq-section {
            background: var(--color-surface);
        }
        .accordion-custom .accordion-item {
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.75rem;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
        }
        .accordion-custom .accordion-button {
            background: var(--color-card);
            color: var(--color-text-deep);
            font-weight: 700;
            padding: 1.25rem 1.5rem;
            font-size: 1rem;
            border: none;
            box-shadow: none !important;
            transition: all var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--color-cyan-soft);
            color: #0891b2;
        }
        .accordion-custom .accordion-button::after {
            background-size: 1rem;
            transition: transform var(--transition);
        }
        .accordion-custom .accordion-button:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-radius: var(--radius-md);
        }
        .accordion-custom .accordion-body {
            padding: 1.25rem 1.5rem 1.5rem;
            color: var(--color-text);
            line-height: 1.85;
            background: var(--color-card);
        }
        .contact-section {
            background: var(--color-card);
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: start;
        }
        .contact-info h2 {
            font-size: var(--font-size-h2);
            font-weight: 800;
            color: var(--color-text-deep);
            margin-bottom: 1rem;
        }
        .contact-info p {
            color: var(--color-muted);
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }
        .contact-detail-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            margin-bottom: 0.85rem;
            color: var(--color-text);
        }
        .contact-detail-item i {
            color: var(--color-cyan);
            margin-top: 0.3rem;
        }
        .contact-form-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            border: 1px solid var(--color-border-light);
        }
        .contact-form-card label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text-deep);
            margin-bottom: 0.4rem;
            display: block;
        }
        .contact-form-card input,
        .contact-form-card textarea {
            width: 100%;
            padding: 0.8rem 1.1rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            background: var(--color-card);
            color: var(--color-text);
            font-size: 0.95rem;
            transition: all var(--transition);
            margin-bottom: 1.25rem;
        }
        .contact-form-card input:focus,
        .contact-form-card textarea:focus {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-color: var(--color-cyan);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.1);
        }
        .contact-form-card textarea {
            min-height: 120px;
            resize: vertical;
        }
        .calendar-note {
            background: var(--color-cyan-soft);
            border-left: 4px solid var(--color-cyan);
            border-radius: var(--radius-sm);
            padding: 1rem 1.5rem;
            margin-top: 2rem;
            color: var(--color-text);
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .calendar-note strong {
            color: #0891b2;
        }
        .site-footer {
            background: var(--color-ink);
            color: var(--color-body-on-dark);
            padding: 4rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-text-on-dark);
            margin-bottom: 1rem;
        }
        .footer-brand span {
            color: var(--color-cyan);
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: var(--color-muted-on-dark);
            max-width: 340px;
        }
        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer-links a {
            color: var(--color-muted-on-dark);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-cyan);
        }
        .footer-links li span {
            color: var(--color-muted-on-dark);
            font-size: 0.85rem;
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .footer-bottom span {
            color: var(--color-muted-on-dark);
            font-size: 0.85rem;
        }
        .footer-legal {
            display: flex;
            gap: 1.25rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .footer-legal a {
            color: var(--color-muted-on-dark);
            font-size: 0.85rem;
        }
        .footer-legal a:hover {
            color: var(--color-cyan);
        }
        .footer-legal span {
            color: var(--color-muted-on-dark);
            font-size: 0.85rem;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 3.5rem 0;
            }
            .section-padding-sm {
                padding: 2.5rem 0;
            }
            .page-banner {
                padding: 3rem 0;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
            }
            .timeline-item {
                padding-left: 50px;
            }
            .match-body {
                flex-direction: column;
                align-items: flex-start;
            }
            .match-thumb {
                width: 100%;
                height: 120px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 576px) {
            .container-responsive {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .stat-grid {
                gap: 1.25rem;
            }
            .match-teams {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.35rem;
            }
            .match-vs {
                font-size: 0.75rem;
            }
            .result-row {
                flex-wrap: wrap;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .breadcrumb-custom {
                font-size: 0.8rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity var(--transition-slow), transform var(--transition-slow);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }