/* roulang page: index */
:root {
            --primary: #f97316;
            --primary-dark: #ea580c;
            --primary-light: #ffedd5;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 1rem;
            --radius-lg: 1.5rem;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
            --transition: all .25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary);
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            z-index: 999;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            position: relative;
            display: block;
            padding: 0.5rem 0.25rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            transition: color .2s;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: scaleX(1);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 0.25rem 0.5rem;
            border-radius: 0.5rem;
        }

        .menu-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        @media (max-width: 900px) {
            .menu-toggle {
                display: block;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 0.5rem 24px 1rem;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 0.85rem 0;
                border-bottom: 1px solid var(--border);
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a::after {
                display: none;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            border-radius: 9999px;
            font-size: 0.95rem;
            font-weight: 600;
            border: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.35);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(249, 115, 22, 0.35);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
        }

        .btn-ghost {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-ghost:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            color: var(--primary-dark);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-light {
            background: #fff;
            color: var(--dark);
        }

        .btn-light:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            color: var(--primary-dark);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 41, 59, 0.75)), url('/assets/images/backpic/back-1.png') no-repeat center center/cover;
            color: #fff;
            overflow: hidden;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 860px;
            padding: 4rem 1.5rem;
        }

        .hero-tag {
            display: inline-block;
            padding: 0.35rem 1.25rem;
            border-radius: 9999px;
            background: rgba(249, 115, 22, 0.2);
            border: 1px solid rgba(249, 115, 22, 0.4);
            color: #fdba74;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            margin-bottom: 1.5rem;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        .hero h1 .accent {
            color: var(--primary);
        }

        .hero-sub {
            font-size: 1.35rem;
            font-weight: 500;
            color: #e2e8f0;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: #94a3b8;
            max-width: 680px;
            margin: 0 auto 2.25rem;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-wave {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 520px;
            }

            .hero h1 {
                font-size: 2.3rem;
            }

            .hero-sub {
                font-size: 1.05rem;
            }

            .hero-desc {
                font-size: 0.95rem;
            }
        }

        /* ===== Section base ===== */
        .section {
            padding: 5rem 0;
        }

        .section-muted {
            background: #f1f5f9;
        }

        .section-dark {
            background: var(--dark);
            color: #e2e8f0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 3rem;
        }

        .section-head .eyebrow {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 0.75rem;
        }

        .section-head h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1rem;
        }

        .section-dark .section-head h2 {
            color: #fff;
        }

        .section-head p {
            font-size: 1.05rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .section-dark .section-head p {
            color: #94a3b8;
        }

        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }

            .section-head h2 {
                font-size: 1.8rem;
            }
        }

        /* ===== Features ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .feature-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 2.25rem 1.75rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: left;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(249, 115, 22, 0.2);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 1.25rem;
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.6rem;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .feature-grid {
                grid-template-columns: 1fr;
                max-width: 520px;
                margin: 0 auto;
            }
        }

        /* ===== Category Cards ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .cat-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }

        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .cat-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.05) 0%, rgba(15, 23, 42, 0.85) 100%);
            transition: var(--transition);
        }

        .cat-card:hover .overlay {
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.1) 0%, rgba(15, 23, 42, 0.9) 100%);
        }

        .cat-card-content {
            position: relative;
            z-index: 2;
            padding: 2rem 1.75rem;
            color: #fff;
            width: 100%;
        }

        .cat-card-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }

        .cat-card-content p {
            font-size: 0.95rem;
            color: #cbd5e1;
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .cat-card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fdba74;
        }

        .cat-card-link:hover {
            color: #fff;
            gap: 0.75rem;
        }

        @media (max-width: 900px) {
            .cat-grid {
                grid-template-columns: 1fr;
                max-width: 520px;
                margin: 0 auto;
            }

            .cat-card {
                min-height: 260px;
            }
        }

        /* ===== News List ===== */
        .news-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .news-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 1.75rem;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(249, 115, 22, 0.15);
        }

        .news-card .badge {
            align-self: flex-start;
        }

        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
        }

        .news-card h3 a:hover {
            color: var(--primary);
        }

        .news-card p {
            font-size: 0.93rem;
            color: var(--text-weak);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.85rem;
            color: #94a3b8;
            margin-top: auto;
        }

        @media (max-width: 768px) {
            .news-wrap {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Badges ===== */
        .badge {
            display: inline-block;
            padding: 0.25rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            border: 1px solid rgba(249, 115, 22, 0.2);
        }

        .badge-blue {
            background: #eff6ff;
            color: #2563eb;
            border-color: #dbeafe;
        }

        .badge-green {
            background: #f0fdf4;
            color: #16a34a;
            border-color: #dcfce7;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 0.9rem;
            color: #94a3b8;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== Process ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            counter-reset: step;
        }

        .process-item {
            text-align: center;
            position: relative;
            padding: 1.5rem 1rem;
        }

        .process-item::before {
            counter-increment: step;
            content: "0" counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            margin: 0 auto 1.25rem;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.1rem;
        }

        .process-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.5rem;
        }

        .process-item p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }

        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(249, 115, 22, 0.2);
        }

        .faq-item summary {
            padding: 1.5rem 2rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            font-size: 1.6rem;
            font-weight: 400;
            color: var(--primary);
            transition: transform .25s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 2rem 1.5rem;
            color: var(--text-weak);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            .faq-item summary {
                padding: 1.25rem 1.25rem;
                font-size: 1rem;
            }

            .faq-item .faq-answer {
                padding: 0 1.25rem 1.25rem;
            }
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--dark-2), var(--dark)), url('/assets/images/backpic/back-2.png') no-repeat center center/cover;
            border-radius: 2rem;
            padding: 4rem 2rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }

        .cta-box p {
            font-size: 1.05rem;
            color: #cbd5e1;
            max-width: 600px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 2.5rem 1.25rem;
                border-radius: 1.25rem;
            }

            .cta-box h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: #cbd5e1;
            padding: 4rem 0 2rem;
            margin-top: 5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 1rem;
            display: inline-block;
        }

        .footer-brand p {
            font-size: 0.95rem;
            color: #94a3b8;
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1.25rem;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.65rem;
        }

        .footer-col a {
            font-size: 0.9rem;
            color: #94a3b8;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            padding-top: 2rem;
            font-size: 0.85rem;
            color: #64748b;
        }

        .footer-bottom a {
            color: #94a3b8;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #f97316;
            --primary-light: #fb923c;
            --primary-dark: #ea580c;
            --dark-bg: #0b1220;
            --dark-bg-light: #111c30;
            --dark-card: #16213a;
            --bg-body: #f8fafc;
            --text-main: #0f172a;
            --text-light: #334155;
            --text-mute: #64748b;
            --border: #e2e8f0;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 18px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
            --container: 1200px;
        }

        /* ========== Reset / Base ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        button, input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul, ol, li {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 2px;
            white-space: nowrap;
        }

        .logo span {
            color: var(--primary);
            font-weight: 900;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-mute);
            padding: 10px 16px;
            border-radius: 6px;
            transition: color 0.3s;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
        }

        .nav-links a:hover {
            color: var(--text-main);
        }

        .nav-links a.active {
            color: var(--text-main);
            font-weight: 600;
        }

        .nav-links a.active::after {
            transform: scaleX(1);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-main);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: #f1f5f9;
            border-color: #cbd5e1;
        }

        /* ========== Hero Banner ========== */
        .hero-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            background-color: var(--dark-bg);
            min-height: 560px;
            display: flex;
            align-items: center;
            padding: 140px 0 100px;
            overflow: hidden;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(118deg, rgba(11, 18, 32, 0.94) 0%, rgba(11, 18, 32, 0.76) 48%, rgba(11, 18, 32, 0.42) 100%);
        }

        .hero-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, rgba(248, 250, 252, 1) 0%, transparent 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .hero-overline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(249, 115, 22, 0.16);
            border: 1px solid rgba(249, 115, 22, 0.35);
            color: #fdba74;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 100px;
            letter-spacing: 0.08em;
            margin-bottom: 20px;
        }

        .hero-banner h1 {
            font-size: clamp(38px, 6vw, 64px);
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.1;
            margin-bottom: 18px;
        }

        .hero-banner p {
            font-size: 17px;
            color: rgba(226, 232, 240, 0.9);
            max-width: 540px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ========== Buttons ========== */
        .btn-primary, .btn-ghost, .btn-dark, .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: 100px;
            transition: all 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
            cursor: pointer;
            border: 2px solid transparent;
            line-height: 1.2;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(249, 115, 22, 0.45);
        }

        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-dark {
            background: var(--dark-bg);
            color: #fff;
        }

        .btn-dark:hover {
            background: #1e293b;
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--dark-bg);
            border-color: #fff;
        }

        .btn-light:hover {
            background: #f1f5f9;
            transform: translateY(-2px);
        }

        a:focus-visible, button:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.5);
            outline-offset: 2px;
        }

        /* ========== Tag Filter ========== */
        .tag-filter-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 72px;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.03);
        }

        .tag-filter {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 16px 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
        }

        .tag-filter::-webkit-scrollbar {
            display: none;
        }

        .tag-filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-mute);
            letter-spacing: 0.06em;
            margin-right: 6px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 500;
            background: #f1f5f9;
            color: var(--text-light);
            border: 1px solid transparent;
            transition: var(--transition);
            cursor: pointer;
        }

        .tag:hover {
            background: #e2e8f0;
            color: var(--text-main);
        }

        .tag.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.25);
        }

        /* ========== Sections ========== */
        .section {
            padding: 80px 0;
        }

        .section.light-bg {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-dark {
            background: var(--dark-bg);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .section-dark::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .section-head.center {
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .section-kicker {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3.5vw, 40px);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .section-head p {
            color: var(--text-mute);
            margin-top: 8px;
            max-width: 640px;
        }

        .section-dark .section-head h2 {
            color: #fff;
        }

        .section-dark .section-head p {
            color: rgba(226, 232, 240, 0.8);
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-mute);
            padding: 8px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }

        .link-more:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        /* ========== News Cards ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(249, 115, 22, 0.25);
        }

        .news-card-media {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--dark-bg);
        }

        .news-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
        }

        .news-card:hover .news-card-media img {
            transform: scale(1.05);
        }

        .news-card-media::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 18, 32, 0.45) 0%, transparent 45%);
            opacity: 0.5;
            transition: opacity 0.4s;
            z-index: 1;
        }

        .news-card:hover .news-card-media::before {
            opacity: 1;
        }

        .news-card-cat {
            position: absolute;
            left: 14px;
            top: 14px;
            z-index: 2;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 100px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .news-card-time {
            position: absolute;
            right: 14px;
            top: 14px;
            z-index: 2;
            color: #fff;
            font-size: 12px;
            background: rgba(11, 18, 32, 0.55);
            padding: 4px 10px;
            border-radius: 100px;
            backdrop-filter: blur(4px);
        }

        .news-card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .news-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-main);
            transition: color 0.3s;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card:hover .news-card-body h3 {
            color: var(--primary-dark);
        }

        .news-card-body p {
            font-size: 14px;
            color: var(--text-mute);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid #f1f5f9;
            font-size: 13px;
            color: var(--text-mute);
        }

        .news-card-meta a {
            font-weight: 600;
            color: var(--primary);
        }

        .news-card-meta a:hover {
            color: var(--primary-dark);
        }

        /* ========== Timeline ========== */
        .timeline-wrap {
            position: relative;
            margin: 0 auto;
            max-width: 880px;
        }

        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, transparent, rgba(249, 115, 22, 0.45), rgba(249, 115, 22, 0.7), transparent);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            align-items: center;
            margin-bottom: 28px;
            position: relative;
        }

        .timeline-item:nth-child(odd) {
            flex-direction: row;
        }

        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .timeline-dot {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 16px;
            height: 16px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid var(--dark-bg);
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.25);
            z-index: 2;
        }

        .timeline-card {
            width: calc(50% - 40px);
            background: rgba(22, 33, 58, 0.85);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition);
        }

        .timeline-card:hover {
            transform: translateY(-3px);
            border-color: rgba(249, 115, 22, 0.4);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
        }

        .timeline-time {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            color: #fdba74;
            background: rgba(249, 115, 22, 0.15);
            padding: 4px 12px;
            border-radius: 100px;
            margin-bottom: 10px;
        }

        .timeline-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .timeline-card p {
            font-size: 13px;
            color: rgba(226, 232, 240, 0.7);
        }

        /* ========== Feature Cards ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .feature-card img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .feature-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 100px;
            background: rgba(249, 115, 22, 0.1);
            color: var(--primary-dark);
            border: 1px solid rgba(249, 115, 22, 0.22);
        }

        .feature-body h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.4;
        }

        .feature-body p {
            color: var(--text-mute);
            font-size: 15px;
        }

        .feature-body a {
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 6px;
        }

        .feature-body a:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        /* ========== Stats ========== */
        .stats-section {
            background: var(--dark-bg);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(249, 115, 22, 0.1) 0%, transparent 60%);
        }

        .stats-grid {
            position: relative;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .stat-item {
            text-align: center;
            padding: 36px 20px;
            background: rgba(22, 33, 58, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .stat-item:hover {
            border-color: rgba(249, 115, 22, 0.3);
            transform: translateY(-4px);
        }

        .stat-num {
            display: block;
            font-size: clamp(30px, 3vw, 44px);
            font-weight: 900;
            color: #fff;
            line-height: 1;
            margin-bottom: 12px;
            letter-spacing: -0.03em;
        }

        .stat-num i {
            color: var(--primary);
            font-style: normal;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(226, 232, 240, 0.75);
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(249, 115, 22, 0.3);
            box-shadow: var(--shadow-md);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
        }

        .faq-q::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--primary);
            transition: transform 0.3s;
            flex-shrink: 0;
        }

        .faq-item.open .faq-q::after {
            transform: rotate(-180deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, padding 0.3s ease;
            color: var(--text-mute);
            font-size: 15px;
            line-height: 1.75;
        }

        .faq-item.open .faq-a {
            max-height: 240px;
            padding-top: 14px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 100px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 17px;
            margin-bottom: 32px;
        }

        .cta-inner .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.15);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0b1220;
            color: rgba(226, 232, 240, 0.75);
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
            color: rgba(226, 232, 240, 0.65);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(226, 232, 240, 0.65);
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer-col a:hover {
            color: #fdba74;
            padding-left: 4px;
        }

        .footer-col i {
            color: rgba(249, 115, 22, 0.7);
            font-size: 15px;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(226, 232, 240, 0.45);
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(226, 232, 240, 0.55);
        }

        .footer-bottom a:hover {
            color: #fdba74;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 24px;
                box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1);
                border-bottom: 1px solid var(--border);
                transform: translateY(-8px);
                opacity: 0;
                pointer-events: none;
                transition: opacity 0.3s, transform 0.3s;
            }

            .nav-links.open {
                opacity: 1;
                transform: translateY(0);
                pointer-events: auto;
            }

            .nav-links a {
                padding: 14px 12px;
                font-size: 15px;
                border-radius: 10px;
                border-bottom: 1px solid #f1f5f9;
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-links a.active {
                background: rgba(249, 115, 22, 0.08);
                color: var(--primary-dark);
            }

            .hero-banner {
                min-height: auto;
                padding: 120px 0 80px;
            }

            .hero-banner h1 {
                font-size: 36px;
            }

            .hero-banner p {
                font-size: 15px;
            }

            .section {
                padding: 60px 0;
            }

            .section-head {
                margin-bottom: 28px;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .timeline-wrap::before {
                left: 12px;
            }

            .timeline-dot {
                left: 12px;
                transform: translate(-50%, -50%);
                width: 12px;
                height: 12px;
            }

            .timeline-item,
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                flex-direction: column;
                align-items: flex-start;
                padding-left: 36px;
            }

            .timeline-card {
                width: 100%;
            }

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-item {
                padding: 24px 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 36px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section {
                padding: 70px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .hero-banner h1 {
                font-size: 30px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary, .btn-ghost {
                justify-content: center;
            }

            .news-card-body {
                padding: 18px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-num {
                font-size: 26px;
            }

            .faq-item {
                padding: 20px 18px;
            }

            .tag-filter {
                padding: 12px 0;
            }
        }

/* roulang page: article */
:root {
            --primary: #d62828;
            --primary-hover: #b52626;
            --primary-soft: #fef2f2;
            --ink: #111827;
            --ink-soft: #4b5563;
            --ink-faint: #9ca3af;
            --bg: #ffffff;
            --bg-soft: #f8fafc;
            --bg-dark: #0f172a;
            --border: #e5e7eb;
            --radius: 16px;
            --radius-lg: 24px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.05);
            --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s, background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--ink);
            display: inline-flex;
            align-items: center;
        }
        .logo span {
            color: var(--primary);
            font-weight: 900;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 2px;
            position: relative;
            transition: color 0.25s;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.25s ease;
        }
        .nav-links a:hover {
            color: var(--ink);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: scaleX(1);
        }
        .nav-links a.active {
            color: var(--ink);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            font-size: 18px;
            color: var(--ink);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background 0.2s, border-color 0.2s;
        }
        .nav-toggle:hover {
            background: var(--bg-soft);
            border-color: var(--primary);
        }
        .article-banner {
            background:
                linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(214, 40, 40, 0.82)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 96px 0 80px;
            color: #fff;
            position: relative;
            border-bottom: 4px solid var(--primary);
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 28px;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.2s;
        }
        .article-banner .breadcrumb a:hover {
            color: #fff;
        }
        .article-banner .breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.5);
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            backdrop-filter: blur(6px);
        }
        .banner-badge::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #ffd166;
            display: inline-block;
        }
        .article-banner h1 {
            font-size: clamp(28px, 4.5vw, 44px);
            font-weight: 800;
            line-height: 1.25;
            max-width: 800px;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .article-meta i {
            opacity: 0.8;
        }
        .article-main {
            background: var(--bg);
            padding: 56px 0 72px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 330px;
            gap: 40px;
            align-items: start;
        }
        .article-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .article-cover {
            margin: 0;
            border-bottom: 1px solid var(--border);
        }
        .article-cover img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .article-content {
            padding: 36px 40px 24px;
            font-size: 16px;
            line-height: 1.9;
            color: var(--ink);
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            margin: 36px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            border-radius: 2px;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--ink);
        }
        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 20px 0 10px;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 28px 0;
            box-shadow: var(--shadow-md);
        }
        .article-content ul,
        .article-content ol {
            margin: 18px 0;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid rgba(214, 40, 40, 0.3);
            transition: border-color 0.2s;
        }
        .article-content a:hover {
            border-color: var(--primary);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-soft);
            border-radius: 0 12px 12px 0;
            padding: 18px 22px;
            color: var(--ink-soft);
            font-style: italic;
            margin: 28px 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content th {
            background: var(--bg-soft);
            font-weight: 600;
        }
        .article-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 0 40px 36px;
            border-top: 1px solid var(--border);
            padding-top: 24px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }
        .tags-label {
            font-size: 14px;
            color: var(--ink-faint);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-right: 4px;
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 500;
            color: var(--ink-soft);
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 5px 14px;
            transition: background 0.2s, color 0.2s, border-color 0.2s;
        }
        .tag-item:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: rgba(214, 40, 40, 0.4);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .share-label {
            font-size: 14px;
            color: var(--ink-faint);
            margin-right: 4px;
        }
        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            border: 1px solid var(--border);
            color: var(--ink-soft);
            transition: all 0.2s;
        }
        .share-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .share-btn.wechat:hover {
            background: #07c160;
            border-color: #07c160;
            color: #fff;
        }
        .share-btn.weibo:hover {
            background: #e6162d;
            border-color: #e6162d;
            color: #fff;
        }
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }
        .sidebar-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-title i {
            color: var(--primary);
        }
        .sidebar-cats {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sidebar-cat-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg-soft);
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            transition: all 0.2s;
        }
        .sidebar-cat-item:hover {
            background: #fff;
            border-color: rgba(214, 40, 40, 0.3);
            color: var(--primary);
            transform: translateX(2px);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-cat-item i {
            width: 20px;
            color: var(--primary);
        }
        .cat-arrow {
            font-size: 13px;
            opacity: 0.6;
        }
        .sidebar-follow .sidebar-desc {
            font-size: 14px;
            color: var(--ink-faint);
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .btn-follow {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 500;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            color: var(--ink-soft);
            background: var(--bg-soft);
            border: 1px solid var(--border);
            transition: all 0.2s;
        }
        .btn-follow:hover {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-follow i {
            font-size: 18px;
        }
        .sidebar-tips ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-tips ul li {
            position: relative;
            padding: 8px 0 8px 24px;
            font-size: 14px;
            color: var(--ink-soft);
            border-bottom: 1px dashed var(--border);
        }
        .sidebar-tips ul li:last-child {
            border-bottom: none;
        }
        .sidebar-tips ul li::before {
            content: "";
            position: absolute;
            left: 4px;
            top: 16px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }
        .sub-form {
            display: flex;
            gap: 8px;
            margin-top: 16px;
        }
        .sub-form input {
            flex: 1;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--ink);
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s;
            min-width: 0;
        }
        .sub-form input::placeholder {
            color: var(--ink-faint);
        }
        .sub-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(214, 40, 40, 0.12);
        }
        .sub-form button {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border: none;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            cursor: pointer;
            transition: background 0.2s, transform 0.2s;
        }
        .sub-form button:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
        }
        .related-section {
            background: var(--bg-soft);
            padding: 72px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            border: 1px solid rgba(214, 40, 40, 0.18);
            border-radius: 999px;
            padding: 6px 18px;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-head .section-sub {
            font-size: 16px;
            color: var(--ink-faint);
            max-width: 560px;
            margin: 0 auto;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(214, 40, 40, 0.2);
        }
        .related-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }
        .related-badge {
            position: absolute;
            left: 16px;
            top: 16px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
        }
        .related-body {
            padding: 22px 24px 26px;
        }
        .related-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--ink);
            transition: color 0.2s;
        }
        .related-card:hover .related-body h3 {
            color: var(--primary);
        }
        .related-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--ink-faint);
        }
        .notfound-main {
            background: var(--bg-soft);
            padding: 88px 0;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .notfound-card {
            max-width: 540px;
            margin: 0 auto;
            text-align: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            box-shadow: var(--shadow-md);
        }
        .nf-icon {
            width: 88px;
            height: 88px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
        }
        .notfound-card h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .notfound-card p {
            font-size: 16px;
            color: var(--ink-faint);
            margin-bottom: 28px;
        }
        .nf-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 12px 26px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(214, 40, 40, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--ink);
            border-color: var(--border);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .cta-section {
            background:
                linear-gradient(120deg, rgba(15, 23, 42, 0.95), rgba(214, 40, 40, 0.88)),
                url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            padding: 72px 0;
            color: #fff;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            flex-wrap: wrap;
        }
        .cta-text {
            max-width: 620px;
        }
        .cta-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: #ffd166;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .cta-inner h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background: #f1f1f1;
            border-color: #f1f1f1;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.72);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-col ul li a i {
            width: 20px;
            margin-right: 6px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .article-layout {
                grid-template-columns: 1fr 300px;
                gap: 24px;
            }
            .related-grid {
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 20px 20px;
                box-shadow: var(--shadow-md);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 14px 0;
                border-bottom: 1px solid var(--border);
                font-size: 16px;
            }
            .nav-links a:last-child {
                border-bottom: none;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                color: var(--primary);
                font-weight: 600;
            }
            .nav-toggle {
                display: flex;
            }
            .article-banner {
                padding: 64px 0 56px;
            }
            .article-main {
                padding: 32px 0 48px;
            }
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                order: 2;
                margin-top: 8px;
            }
            .article-content {
                padding: 28px 20px 20px;
            }
            .article-bottom {
                padding: 0 20px 28px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .cta-buttons {
                justify-content: center;
            }
            .notfound-card {
                padding: 40px 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 17px;
            }
            .article-banner h1 {
                font-size: 26px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .section-head h2 {
                font-size: 25px;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .related-body {
                padding: 18px;
            }
            .sub-form {
                flex-direction: column;
            }
            .sub-form button {
                width: 100%;
                height: 44px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .nf-actions {
                flex-direction: column;
                width: 100%;
            }
            .nf-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --brand: #f59e0b;
            --brand-dark: #d97706;
            --brand-light: #fbbf24;
            --ink-900: #0b1120;
            --ink-800: #1e293b;
            --ink-600: #475569;
            --ink-400: #94a3b8;
            --bg: #f8fafc;
            --surface: #ffffff;
            --line: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, .05);
            --shadow-md: 0 14px 32px rgba(15, 23, 42, .08);
            --shadow-lg: 0 30px 60px rgba(15, 23, 42, .12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink-600);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 96px 0;
        }

        .section-head {
            max-width: 640px;
            margin-bottom: 48px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .06em;
            color: var(--brand-dark);
            background: rgba(245, 158, 11, .1);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 700;
            color: var(--ink-900);
            line-height: 1.25;
            letter-spacing: -.02em;
        }

        .section-head p {
            margin-top: 14px;
            font-size: 16px;
            color: var(--ink-600);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
        }

        .site-header .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink-900);
            letter-spacing: -.01em;
            display: inline-flex;
            align-items: center;
        }

        .logo span {
            color: var(--brand);
            font-weight: 800;
            margin: 0 2px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
        }

        .nav-links a {
            position: relative;
            display: inline-block;
            margin-left: 32px;
            padding: 6px 2px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-600);
            transition: color .3s;
        }

        .nav-links a:hover {
            color: var(--brand-dark);
        }

        .nav-links a.active {
            color: var(--ink-900);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--brand-light), var(--brand-dark));
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--line);
            color: var(--ink-800);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: background .2s, border-color .2s;
        }

        .menu-toggle:hover {
            background: #f1f5f9;
        }

        /* ===== Hero ===== */
        .hero-data {
            position: relative;
            overflow: hidden;
            background: var(--ink-900);
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-data .bg-layer {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: .35;
        }

        .hero-data::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 1px 1px, rgba(245, 158, 11, .18) 1px, transparent 0);
            background-size: 32px 32px;
            pointer-events: none;
        }

        .hero-data .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(11, 17, 32, .94) 0%, rgba(11, 17, 32, .75) 55%, rgba(11, 17, 32, .55) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, .14);
            border: 1px solid rgba(245, 158, 11, .35);
            color: var(--brand-light);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 22px;
        }

        .hero-badge i {
            font-size: 11px;
        }

        .hero-content h1 {
            font-size: clamp(34px, 5vw, 52px);
            font-weight: 800;
            color: #fff;
            line-height: 1.12;
            letter-spacing: -.02em;
        }

        .hero-content .lead {
            margin-top: 20px;
            max-width: 520px;
            font-size: 17px;
            line-height: 1.75;
            color: rgba(226, 232, 240, .85);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--brand-light), var(--brand-dark));
            color: #0b1120;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 999px;
            box-shadow: 0 6px 20px rgba(245, 158, 11, .35);
            transition: transform .3s, box-shadow .3s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, .45);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .08);
            color: #e2e8f0;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .2);
            transition: background .3s, border-color .3s;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .15);
            border-color: rgba(255, 255, 255, .35);
        }

        .hero-stats-card {
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: 20px;
            padding: 32px 28px;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-lg);
        }

        .hero-stats-card .stats-title {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--brand-light);
            text-transform: uppercase;
            margin-bottom: 20px;
        }

        .hero-stats-card .stat-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .hero-stats-card .stat-row:last-child {
            border-bottom: none;
        }

        .hero-stats-card .stat-label {
            font-size: 14px;
            color: rgba(226, 232, 240, .8);
        }

        .hero-stats-card .stat-value {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
        }

        .hero-stats-card .stat-value small {
            font-size: 12px;
            font-weight: 500;
            color: rgba(226, 232, 240, .6);
            margin-left: 4px;
        }

        .hero-stats-card .hot-line {
            margin-top: 18px;
            background: rgba(245, 158, 11, .12);
            border-radius: 12px;
            padding: 12px 16px;
            font-size: 13px;
            color: var(--brand-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hero-stats-card .hot-line i {
            font-size: 12px;
        }

        /* ===== Live Strip ===== */
        .live-strip {
            background: #0f172a;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            padding: 18px 0;
            overflow: hidden;
        }

        .live-strip .strip-inner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .live-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            background: rgba(255, 255, 255, .04);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, .06);
            transition: background .3s;
        }

        .live-item:hover {
            background: rgba(255, 255, 255, .08);
        }

        .live-item .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #ef4444;
            flex-shrink: 0;
            box-shadow: 0 0 0 4px rgba(239, 68, 68, .2);
        }

        .live-item .live-dot.done {
            background: #10b981;
            box-shadow: 0 0 0 4px rgba(16, 185, 129, .15);
        }

        .live-item .live-meta {
            min-width: 0;
        }

        .live-item .live-meta .teams {
            font-size: 13px;
            font-weight: 600;
            color: #e2e8f0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .live-item .live-meta .status {
            font-size: 11px;
            color: var(--ink-400);
        }

        .live-item .score {
            margin-left: auto;
            font-size: 16px;
            font-weight: 700;
            color: var(--brand-light);
            font-variant-numeric: tabular-nums;
        }

        /* ===== Ranking Cards ===== */
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .ranking-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform .3s, box-shadow .3s;
        }

        .ranking-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .ranking-card .card-cover {
            position: relative;
            height: 140px;
            overflow: hidden;
        }

        .ranking-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }

        .ranking-card:hover .card-cover img {
            transform: scale(1.04);
        }

        .ranking-card .card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15, 23, 42, .55), transparent 70%);
        }

        .ranking-card .badge {
            position: absolute;
            left: 16px;
            bottom: 14px;
            z-index: 2;
            background: var(--brand);
            color: #0b1120;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 999px;
        }

        .ranking-card .card-body {
            padding: 20px 20px 24px;
        }

        .ranking-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink-900);
            margin-bottom: 16px;
        }

        .ranking-list {
            list-style: none;
        }

        .ranking-list li {
            display: grid;
            grid-template-columns: 28px 1fr auto;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            font-size: 14px;
        }

        .ranking-list .rank-num {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 700;
            background: #f1f5f9;
            color: var(--ink-600);
        }

        .ranking-list li:nth-child(-n+3) .rank-num {
            background: var(--brand);
            color: #0b1120;
        }

        .ranking-list .rank-name {
            font-weight: 500;
            color: var(--ink-800);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-list .rank-score {
            font-weight: 700;
            color: var(--ink-900);
            font-variant-numeric: tabular-nums;
        }

        .ranking-list .rank-bar {
            grid-column: 1 / -1;
            height: 4px;
            background: #f1f5f9;
            border-radius: 4px;
            overflow: hidden;
        }

        .ranking-list .rank-bar span {
            display: block;
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--brand-light), var(--brand-dark));
        }

        .ranking-card .view-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-dark);
            transition: gap .3s;
        }

        .ranking-card .view-link:hover {
            gap: 10px;
        }

        /* ===== Dimension Cards ===== */
        .dim-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .dim-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            transition: transform .3s, box-shadow .3s;
            position: relative;
            overflow: hidden;
        }

        .dim-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-light), var(--brand-dark));
            opacity: 0;
            transition: opacity .3s;
        }

        .dim-card:hover::before {
            opacity: 1;
        }

        .dim-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .dim-card .dim-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: rgba(245, 158, 11, .12);
            color: var(--brand-dark);
            margin-bottom: 18px;
        }

        .dim-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink-900);
            margin-bottom: 10px;
        }

        .dim-card p {
            font-size: 14px;
            line-height: 1.65;
            color: var(--ink-600);
        }

        .dim-card .dim-stats {
            list-style: none;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px dashed var(--line);
            font-size: 13px;
        }

        .dim-card .dim-stats li {
            display: flex;
            justify-content: space-between;
            padding: 4px 0;
            color: var(--ink-800);
        }

        .dim-card .dim-stats li span {
            font-weight: 700;
            color: var(--ink-900);
        }

        /* ===== Player Focus ===== */
        .player-focus {
            background: var(--ink-900);
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            display: grid;
            grid-template-columns: 1fr 1fr;
        }

        .player-focus .focus-img {
            position: relative;
            min-height: 380px;
        }

        .player-focus .focus-img img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .player-focus .focus-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 40%, rgba(11, 17, 32, .9) 100%);
        }

        .player-focus .focus-body {
            padding: 48px 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .player-focus .focus-tag {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--brand-light);
            margin-bottom: 10px;
        }

        .player-focus h3 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -.02em;
        }

        .player-focus .focus-desc {
            margin-top: 12px;
            font-size: 14px;
            color: rgba(226, 232, 240, .75);
            line-height: 1.7;
        }

        .focus-metrics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 28px;
        }

        .focus-metrics .metric {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 12px;
            padding: 14px 12px;
            text-align: center;
        }

        .focus-metrics .metric .num {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-light);
        }

        .focus-metrics .metric .lbl {
            font-size: 12px;
            color: rgba(226, 232, 240, .65);
            margin-top: 2px;
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            margin: 0 auto;
            max-width: 720px;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--brand-light), rgba(226, 232, 240, .4));
        }

        .timeline-item {
            position: relative;
            padding-left: 44px;
            padding-bottom: 32px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 5px;
            width: 11px;
            height: 11px;
            border-radius: 50%;
            background: var(--brand);
            box-shadow: 0 0 0 4px rgba(245, 158, 11, .2);
        }

        .timeline-item .tl-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-dark);
            letter-spacing: .04em;
        }

        .timeline-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink-900);
            margin: 4px 0 6px;
        }

        .timeline-item p {
            font-size: 14px;
            color: var(--ink-600);
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 14px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s, border-color .3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: #dde5ef;
        }

        .faq-item.open {
            border-color: rgba(245, 158, 11, .4);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink-900);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            color: var(--ink-600);
            font-size: 12px;
            transition: background .3s, color .3s, transform .3s;
        }

        .faq-item.open .faq-icon {
            background: var(--brand);
            color: #0b1120;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s;
            padding: 0 24px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--ink-600);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-wrap {
            background: var(--ink-900);
            border-radius: 24px;
            padding: 64px 56px;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-wrap::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 30% 20%, rgba(245, 158, 11, .18), transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(245, 158, 11, .1), transparent 40%);
        }

        .cta-wrap > * {
            position: relative;
            z-index: 2;
        }

        .cta-wrap h2 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 800;
            color: #fff;
            letter-spacing: -.02em;
            line-height: 1.25;
        }

        .cta-wrap p {
            margin: 16px auto 0;
            max-width: 480px;
            font-size: 15px;
            color: rgba(226, 232, 240, .75);
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 28px auto 0;
        }

        .cta-form input {
            flex: 1;
            min-width: 0;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 999px;
            padding: 12px 20px;
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color .3s, background .3s;
        }

        .cta-form input::placeholder {
            color: rgba(226, 232, 240, .5);
        }

        .cta-form input:focus {
            border-color: var(--brand);
            background: rgba(255, 255, 255, .16);
        }

        .cta-form .btn-primary {
            flex-shrink: 0;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--brand-light), var(--brand-dark));
            color: #0b1120;
            font-size: 14px;
            font-weight: 700;
            padding: 12px 24px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0b1120;
            color: rgba(226, 232, 240, .7);
            padding: 64px 0 0;
            margin-top: 96px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 20px;
        }

        .footer-brand p {
            margin-top: 14px;
            font-size: 14px;
            line-height: 1.7;
            max-width: 340px;
            color: rgba(226, 232, 240, .65);
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(226, 232, 240, .65);
            transition: color .3s, padding-left .3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col a:hover {
            color: var(--brand-light);
            padding-left: 4px;
        }

        .footer-col a i {
            width: 16px;
            font-size: 13px;
            color: var(--brand);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(226, 232, 240, .5);
        }

        .footer-bottom a {
            color: rgba(226, 232, 240, .6);
            transition: color .3s;
        }

        .footer-bottom a:hover {
            color: var(--brand-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .ranking-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .dim-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .live-strip .strip-inner {
                grid-template-columns: repeat(2, 1fr);
            }

            .player-focus {
                grid-template-columns: 1fr;
            }

            .player-focus .focus-img {
                min-height: 280px;
            }

            .player-focus .focus-img::after {
                background: linear-gradient(180deg, transparent, rgba(11, 17, 32, .9));
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-links {
                position: absolute;
                top: 68px;
                left: 24px;
                right: 24px;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px;
                border-radius: 16px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--line);
                display: none;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                margin-left: 0;
                padding: 13px 4px;
                border-bottom: 1px solid #f1f5f9;
                font-size: 15px;
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a.active::after {
                display: none;
            }

            .hero-data {
                min-height: 480px;
                padding: 60px 0;
            }

            .hero-stats-card {
                margin-top: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-wrap {
                padding: 48px 24px;
            }

            .cta-form {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .ranking-grid {
                grid-template-columns: 1fr;
            }

            .dim-grid {
                grid-template-columns: 1fr;
            }

            .live-strip .strip-inner {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .focus-metrics {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }

            .player-focus .focus-body {
                padding: 32px 20px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0f172a;
            --secondary: #1e3a5f;
            --accent: #f59e0b;
            --accent-deep: #d97706;
            --text: #1e293b;
            --text-weak: #64748b;
            --bg: #f8fafc;
            --bg-deep: #eef1f5;
            --card: #ffffff;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(15,23,42,0.05);
            --shadow: 0 14px 36px -12px rgba(15,23,42,0.14);
            --shadow-lg: 0 28px 60px -20px rgba(15,23,42,0.22);
            --container: 1200px;
            --section: 100px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ul {
            list-style: none;
        }
        .container {
            width: min(var(--container), 92%);
            margin: 0 auto;
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .logo {
            font-weight: 800;
            font-size: 21px;
            letter-spacing: 0.5px;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo span {
            color: var(--accent);
            margin: 0 1px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-links a {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            padding: 8px 0;
            transition: color .2s;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            height: 2px;
            width: 0;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--accent), #f97316);
            transition: width .3s ease;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--primary);
            line-height: 1;
            padding: 8px 0 8px 16px;
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 76vh;
            display: flex;
            align-items: center;
            padding: 150px 0 110px;
            background:
                linear-gradient(115deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 58, 95, 0.8) 55%, rgba(15, 23, 42, 0.45) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.28);
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 14px;
            letter-spacing: 2px;
            color: #fcd34d;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero-title {
            font-size: clamp(34px, 6vw, 60px);
            font-weight: 900;
            line-height: 1.18;
            letter-spacing: 2px;
            margin: 28px 0 16px;
        }
        .hero-title .dot {
            color: var(--accent);
        }
        .hero-desc {
            max-width: 620px;
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), #f97316);
            color: #0f172a;
            font-weight: 700;
            font-size: 15px;
            padding: 14px 30px;
            border-radius: 999px;
            box-shadow: 0 10px 24px -8px rgba(245, 158, 11, 0.55);
            transition: transform .2s, box-shadow .2s;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 32px -8px rgba(245, 158, 11, 0.62);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.34);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 14px 28px;
            border-radius: 999px;
            transition: background .2s, border-color .2s, transform .2s;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.55);
            transform: translateY(-2px);
        }
        .hero-stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 72px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            backdrop-filter: blur(8px);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-value {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat-value small {
            font-size: 16px;
            color: #fcd34d;
            margin-left: 2px;
        }
        .hero-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.68);
            margin-top: 4px;
            letter-spacing: 1px;
        }
        /* ===== Section ===== */
        .section {
            padding: var(--section) 0;
        }
        .section-alt {
            background: var(--bg-deep);
        }
        .section-head {
            max-width: 680px;
            margin-bottom: 52px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--accent-deep);
            background: rgba(245, 158, 11, .1);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            letter-spacing: .5px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-weak);
            margin-top: 14px;
            line-height: 1.8;
        }
        /* ===== Topic Cards ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .topic-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: transform .3s, box-shadow .3s, border-color .3s;
        }
        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(245, 158, 11, .35);
        }
        .topic-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .topic-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }
        .topic-card:hover .topic-cover img {
            transform: scale(1.05);
        }
        .topic-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, 0.55));
        }
        .topic-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, .08);
        }
        .topic-tag {
            position: absolute;
            bottom: 14px;
            left: 18px;
            z-index: 2;
            color: #fcd34d;
            font-size: 13px;
            font-weight: 600;
        }
        .topic-body {
            padding: 24px 24px 26px;
        }
        .topic-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .topic-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .topic-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 18px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            color: var(--text-weak);
            font-size: 13px;
        }
        .topic-meta span i {
            color: var(--accent);
            margin-right: 4px;
        }
        .topic-meta .join-btn {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-deep);
            transition: color .2s;
        }
        .topic-meta .join-btn:hover {
            color: var(--primary);
        }
        /* ===== Ranking ===== */
        .ranking-wrap {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 48px;
            align-items: stretch;
        }
        .ranking-list {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 16px;
            border-radius: var(--radius);
            transition: background .2s, transform .2s;
        }
        .ranking-item:hover {
            background: var(--bg-deep);
            transform: translateX(4px);
        }
        .ranking-item+.ranking-item {
            margin-top: 4px;
        }
        .rank-num {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            background: var(--bg-deep);
            color: var(--text-weak);
            flex-shrink: 0;
        }
        .ranking-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #f59e0b, #fb923c);
            color: #fff;
        }
        .ranking-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #94a3b8, #cbd5e1);
            color: #fff;
        }
        .ranking-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #d97706, #b45309);
            color: #fff;
        }
        .rank-user {
            flex: 1;
        }
        .rank-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
        }
        .rank-desc {
            font-size: 13px;
            color: var(--text-weak);
        }
        .rank-score {
            text-align: right;
            flex-shrink: 0;
        }
        .rank-score span {
            display: block;
            font-size: 18px;
            font-weight: 800;
            color: var(--accent-deep);
        }
        .rank-score small {
            font-size: 12px;
            color: var(--text-weak);
        }
        .ranking-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .side-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }
        .side-card .side-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .side-card .side-title i {
            color: var(--accent);
        }
        .rule-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
            color: var(--text);
        }
        .rule-list li:last-child {
            border-bottom: none;
        }
        .rule-list .ri {
            color: var(--accent);
            font-size: 16px;
            line-height: 1.4;
        }
        .side-card-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 150px;
            background: url('/assets/images/coverpic/cover-5.png') center/cover no-repeat;
        }
        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            max-width: 860px;
            margin: 0 auto;
            padding-left: 36px;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(180deg, var(--accent), var(--accent-deep), var(--border));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 40px;
            padding-left: 28px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -32px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--accent);
            box-shadow: 0 0 0 4px rgba(245, 158, 11, .16);
        }
        .timeline-time {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-deep);
            letter-spacing: 1px;
            background: rgba(245, 158, 11, .1);
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 8px;
        }
        .timeline-content {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .2s, transform .2s;
        }
        .timeline-content:hover {
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .timeline-content p {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }
        .timeline-content p strong {
            color: var(--primary);
        }
        .timeline-content .t-extra {
            margin-top: 8px;
            font-size: 13px;
            color: var(--text-weak);
            display: flex;
            gap: 16px;
        }
        /* ===== Activity Cards ===== */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .activity-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            text-align: left;
            transition: transform .3s, box-shadow .3s;
        }
        .activity-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .activity-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(245, 158, 11, .14), rgba(249, 115, 22, .08));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-deep);
            margin-bottom: 20px;
        }
        .activity-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .activity-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .activity-card .activity-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-deep);
            transition: gap .2s;
        }
        .activity-card .activity-link:hover {
            gap: 12px;
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow .25s, border-color .25s;
        }
        .faq-item.open {
            border-color: rgba(245, 158, 11, .4);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            background: none;
            transition: color .2s;
        }
        .faq-question:hover {
            color: var(--accent-deep);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--accent-deep);
            transition: transform .3s, background .3s;
        }
        .faq-item.open .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
        }
        /* ===== CTA ===== */
        .cta-band {
            border-radius: var(--radius-lg);
            background:
                linear-gradient(115deg, rgba(15, 23, 42, 0.92), rgba(30, 58, 95, 0.78)),
                url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            color: #fff;
            padding: 72px 48px;
            text-align: center;
        }
        .cta-band h2 {
            font-size: clamp(24px, 4vw, 36px);
            font-weight: 800;
            letter-spacing: 1px;
        }
        .cta-band p {
            max-width: 520px;
            margin: 14px auto 32px;
            color: rgba(255, 255, 255, .78);
            font-size: 15px;
        }
        .cta-band .btn-primary {
            font-size: 16px;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, .72);
            padding: 64px 0 0;
            margin-top: 100px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 44px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
        }
        .footer-brand .logo span {
            color: var(--accent);
        }
        .footer-brand p {
            margin-top: 16px;
            max-width: 360px;
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .58);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 2px;
            margin-bottom: 20px;
        }
        .footer-col ul li {
            margin-bottom: 12px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, .62);
            transition: color .2s, padding-left .2s;
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col ul a i {
            width: 20px;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, .42);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .6);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 26px;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .activity-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section: 72px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 0;
                padding: 8px 24px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                display: none;
                align-items: stretch;
                overflow-y: auto;
                max-height: calc(100vh - 76px);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 16px 0;
                border-bottom: 1px solid var(--border);
                font-size: 15px;
            }
            .nav-links a:last-child {
                border-bottom: none;
            }
            .hero {
                min-height: auto;
                padding: 120px 0 70px;
            }
            .hero-title {
                font-size: 36px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .ranking-wrap {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-band {
                padding: 48px 28px;
            }
        }
        @media (max-width: 520px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .activity-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats-row {
                grid-template-columns: 1fr 1fr;
                padding: 20px;
            }
            .hero-stat-value {
                font-size: 24px;
            }
            .section-head {
                margin-bottom: 34px;
            }
            .timeline-content {
                padding: 16px 18px;
            }
            .timeline {
                padding-left: 28px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                scroll-behavior: auto !important;
                transition: none !important;
            }
        }