/* roulang page: index */
:root {
            --primary: #1a3a5c;
            --primary-dark: #0f2640;
            --primary-light: #234b73;
            --accent: #c9a84c;
            --accent-light: #d9bc6a;
            --accent-dark: #a8892e;
            --bg: #ffffff;
            --bg-light: #f7f8fa;
            --bg-warm: #faf9f6;
            --text: #1a1a1a;
            --text-secondary: #4a4a4a;
            --text-muted: #7a7a7a;
            --text-light: #999999;
            --border: #e5e5e5;
            --border-light: #eeeeee;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
            --section-gap-sm: 48px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: var(--radius-xs);
        }
        ul {
            list-style: none;
        }
        input {
            font-family: inherit;
        }

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 18px;
            z-index: 1000;
            pointer-events: none;
            display: flex;
            justify-content: center;
            padding: 0 20px;
        }
        .nav-dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-full);
            padding: 6px 8px 6px 22px;
            box-shadow: var(--shadow-lg);
            max-width: 900px;
            width: 100%;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .nav-dock:hover {
            box-shadow: var(--shadow-xl);
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--accent-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: var(--radius-full);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(26, 58, 92, 0.3);
        }
        .nav-links a.active:hover {
            color: #ffffff;
            background: var(--primary-light);
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
            box-shadow: 0 2px 10px rgba(201, 168, 76, 0.35);
        }
        .nav-cta-btn:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 4px 18px rgba(201, 168, 76, 0.5);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            padding: 8px;
            line-height: 1;
            border-radius: var(--radius-xs);
            pointer-events: auto;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('assets/images/backpic/back-1.webp') center / cover no-repeat;
            background-position: center 40%;
            color: #ffffff;
            margin-top: -70px;
            padding-top: 100px;
            padding-bottom: 80px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 38, 64, 0.75) 0%, rgba(26, 58, 92, 0.85) 40%, rgba(15, 38, 64, 0.9) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 18px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .hero h1 .brand-em {
            color: var(--accent-light);
        }
        .hero-desc {
            font-size: 1.15rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 32px;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition);
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(201, 168, 76, 0.4);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 24px rgba(201, 168, 76, 0.55);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.875rem;
            border-radius: var(--radius-full);
            font-weight: 500;
        }
        .btn-text {
            color: var(--accent);
            background: transparent;
            padding: 8px 4px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .btn-text:hover {
            color: var(--accent-dark);
            gap: 12px;
        }
        .btn-text::after {
            content: '→';
            transition: transform var(--transition);
        }
        .btn-text:hover::after {
            transform: translateX(4px);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== STATS STRIP ========== */
        .stats-strip {
            background: var(--bg-light);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 40px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-card {
            padding: 20px 16px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-number .plus {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== ADVANTAGE CARDS ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .card-advantage {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card-advantage::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 4px;
            background: var(--accent);
            border-radius: 0 0 4px 4px;
            transition: width var(--transition);
        }
        .card-advantage:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-advantage:hover::before {
            width: 90px;
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--accent);
            transition: all var(--transition);
        }
        .card-advantage:hover .card-icon {
            background: var(--accent);
            color: #fff;
        }
        .card-advantage h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .card-advantage p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== BRAND STORY ========== */
        .brand-story {
            background: var(--bg-warm);
        }
        .story-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .story-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4 / 3;
        }
        .story-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .story-content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .story-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .story-highlights {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }
        .story-highlight-tag {
            background: #fff;
            border: 1px solid var(--border);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary);
            transition: all var(--transition);
        }
        .story-highlight-tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .card-category {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }
        .card-category:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            border-color: transparent;
        }
        .card-category-img {
            width: 100%;
            aspect-ratio: 16 / 11;
            overflow: hidden;
            position: relative;
        }
        .card-category-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card-category:hover .card-category-img img {
            transform: scale(1.06);
        }
        .card-category-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }
        .card-category-body {
            padding: 18px 16px;
        }
        .card-category-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .card-category-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .card-testimonial {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            transition: all var(--transition);
            position: relative;
        }
        .card-testimonial::before {
            content: '"';
            font-size: 5rem;
            color: var(--accent);
            opacity: 0.2;
            position: absolute;
            top: 8px;
            left: 16px;
            line-height: 1;
            font-family: Georgia, serif;
        }
        .card-testimonial:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .card-testimonial .testimonial-stars {
            color: var(--accent);
            font-size: 0.95rem;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }
        .card-testimonial p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .card-testimonial .testimonial-author {
            font-weight: 600;
            color: var(--text);
            font-size: 0.9rem;
        }
        .card-testimonial .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* ========== PARTNERS ========== */
        .partners-strip {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 36px;
            padding: 20px 0;
        }
        .partner-item {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-muted);
            padding: 12px 20px;
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .partner-item:hover {
            color: var(--primary);
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--transition);
            cursor: pointer;
        }
        .faq-question:hover {
            color: var(--accent-dark);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: all var(--transition);
            color: var(--text-muted);
        }
        .faq-item.open .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ========== NEWS ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .card-news {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .card-news:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-news-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .card-news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card-news:hover .card-news-img img {
            transform: scale(1.05);
        }
        .card-news-body {
            padding: 16px;
        }
        .card-news-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .card-news-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .card-news-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        /* ========== CTA ========== */
        .cta-block {
            background: var(--primary);
            color: #fff;
            text-align: center;
            padding: 60px 24px;
            border-radius: var(--radius-xl);
            margin: 0 16px;
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url('assets/images/backpic/back-3.webp') center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-block .container {
            position: relative;
            z-index: 1;
            max-width: 700px;
        }
        .cta-block h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-block p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-block .btn-primary {
            font-size: 1.05rem;
            padding: 15px 34px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 28px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 8px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .cards-grid,
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .story-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .story-image {
                aspect-ratio: 16 / 9;
                max-height: 360px;
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .nav-links a {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .nav-dock {
                border-radius: var(--radius-lg);
                padding: 6px 10px 6px 16px;
            }
        }

        @media (max-width: 768px) {
            .nav-dock {
                flex-wrap: wrap;
                justify-content: space-between;
                border-radius: var(--radius);
                padding: 8px 14px;
                gap: 6px;
            }
            .nav-links {
                order: 3;
                width: 100%;
                justify-content: center;
                flex-wrap: wrap;
                gap: 4px;
                padding-top: 4px;
                border-top: 1px solid var(--border-light);
                margin-top: 2px;
            }
            .nav-links a {
                padding: 7px 11px;
                font-size: 0.8rem;
                border-radius: var(--radius-xs);
            }
            .nav-cta-btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .site-header {
                top: 8px;
                padding: 0 10px;
            }
            .hero {
                min-height: 480px;
                margin-top: -50px;
                padding-top: 90px;
                padding-bottom: 50px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .cards-grid,
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: var(--section-gap-sm) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .partners-strip {
                gap: 16px;
            }
            .partner-item {
                font-size: 0.9rem;
                padding: 8px 14px;
            }
            .cta-block {
                border-radius: var(--radius);
                margin: 0 10px;
                padding: 40px 16px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .nav-dock {
                border-radius: var(--radius-sm);
                padding: 6px 10px;
            }
            .nav-logo {
                font-size: 1.05rem;
            }
            .nav-links a {
                padding: 6px 9px;
                font-size: 0.75rem;
            }
            .nav-cta-btn {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .hero {
                min-height: 400px;
                padding-top: 80px;
                padding-bottom: 36px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-desc {
                font-size: 0.85rem;
            }
            .cards-grid,
            .category-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .story-content h2 {
                font-size: 1.4rem;
            }
            .card-advantage {
                padding: 22px 16px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 0.85rem;
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 5px 7px;
                font-size: 0.7rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0d2b45;
            --primary-light: #1a4060;
            --primary-dark: #081c2e;
            --accent: #d4a843;
            --accent-light: #e6c56d;
            --accent-dark: #b8912e;
            --highlight: #e04038;
            --highlight-light: #f06058;
            --bg-white: #ffffff;
            --bg-light: #f6f7f9;
            --bg-lighter: #fafbfc;
            --bg-warm: #fdf9f2;
            --text-primary: #1a1d22;
            --text-body: #2d3238;
            --text-muted: #6b7280;
            --text-light: #8b9298;
            --border-color: #e2e5ea;
            --border-light: #eef0f3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.09), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.11), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1200px;
            --nav-height: 64px;
            --dock-height: 56px;
            --section-gap: 72px;
            --card-gap: 24px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-white);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            letter-spacing: 0.01em;
        }

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

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

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

        input,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
            :root {
                --section-gap: 48px;
                --card-gap: 18px;
            }
        }

        /* ===== 浮动Dock导航 ===== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 16px;
            pointer-events: none;
        }

        .nav-dock {
            pointer-events: auto;
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-radius: var(--radius-full);
            padding: 8px 10px 8px 22px;
            box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0, 0, 0, 0.06);
            gap: 10px;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            min-height: var(--dock-height);
        }

        .nav-dock:hover {
            box-shadow: var(--shadow-xl), 0 0 0 1px rgba(0, 0, 0, 0.08);
            transform: translateY(-1px);
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
            padding: 4px 6px;
            transition: color var(--transition-fast);
            position: relative;
        }
        .nav-logo::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 6px;
            right: 6px;
            height: 2.5px;
            background: var(--accent);
            border-radius: 4px;
            opacity: 0;
            transform: scaleX(0.6);
            transition: opacity var(--transition-fast), transform var(--transition-fast);
        }
        .nav-logo:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 17px;
            border-radius: var(--radius-full);
            font-size: 0.93rem;
            font-weight: 520;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(13, 43, 69, 0.05);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(13, 43, 69, 0.07);
            font-weight: 650;
            box-shadow: inset 0 0 0 1px rgba(13, 43, 69, 0.1);
        }
        .nav-links a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .nav-cta-btn {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: var(--highlight);
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(224, 64, 56, 0.3);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--highlight-light);
            box-shadow: 0 4px 16px rgba(224, 64, 56, 0.4);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(224, 64, 56, 0.25);
        }
        .nav-cta-btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            padding: 6px 10px;
            color: var(--primary);
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            background: rgba(13, 43, 69, 0.06);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        @media (max-width: 900px) {
            .site-header {
                top: 8px;
                padding: 0 8px;
            }
            .nav-dock {
                padding: 8px 12px 8px 16px;
                border-radius: var(--radius-lg);
                flex-wrap: wrap;
                gap: 6px;
            }
            .nav-links {
                order: 3;
                width: 100%;
                justify-content: center;
                gap: 2px;
                padding: 6px 0 2px;
            }
            .nav-links a {
                padding: 7px 13px;
                font-size: 0.85rem;
            }
            .nav-cta-btn {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-links.collapsed-mobile {
                display: none;
            }
            .nav-dock.mobile-expanded .nav-links.collapsed-mobile {
                display: flex;
            }
        }

        @media (max-width: 520px) {
            .nav-dock {
                border-radius: var(--radius-md);
                padding: 6px 10px 6px 14px;
                min-height: auto;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.78rem;
            }
            .nav-cta-btn {
                padding: 7px 13px;
                font-size: 0.76rem;
            }
            .site-header {
                top: 4px;
                padding: 0 4px;
            }
        }

        /* ===== 页面主体 ===== */
        .page-main {
            flex: 1;
            padding-top: 28px;
        }

        /* ===== 内页Banner ===== */
        .inner-banner {
            position: relative;
            background: url('assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 0 20px 0;
            overflow: hidden;
            isolation: isolate;
        }
        .inner-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 43, 69, 0.88) 0%, rgba(8, 28, 46, 0.78) 40%, rgba(13, 43, 69, 0.85) 100%);
            z-index: 1;
        }
        .inner-banner-content {
            position: relative;
            z-index: 2;
            max-width: 750px;
            padding: 40px 28px;
        }
        .inner-banner-content .badge-accent {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }
        .inner-banner-content h1 {
            font-size: 2.6rem;
            font-weight: 750;
            color: #fff;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
            line-height: 1.25;
        }
        .inner-banner-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 580px;
            margin: 0 auto 20px;
        }
        .inner-banner-content .banner-stats {
            display: flex;
            gap: 28px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .banner-stat-item {
            text-align: center;
            color: #fff;
        }
        .banner-stat-item .stat-num {
            font-size: 2rem;
            font-weight: 750;
            color: var(--accent-light);
            line-height: 1;
        }
        .banner-stat-item .stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .inner-banner {
                min-height: 300px;
                margin: 0 10px 0;
                border-radius: var(--radius-lg);
            }
            .inner-banner-content h1 {
                font-size: 2rem;
            }
            .inner-banner-content p {
                font-size: 0.95rem;
            }
            .banner-stat-item .stat-num {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .inner-banner {
                min-height: 260px;
                margin: 0 4px 0;
                border-radius: var(--radius-md);
            }
            .inner-banner-content {
                padding: 28px 16px;
            }
            .inner-banner-content h1 {
                font-size: 1.6rem;
            }
            .inner-banner-content p {
                font-size: 0.85rem;
            }
            .banner-stats {
                gap: 14px;
            }
            .banner-stat-item .stat-num {
                font-size: 1.3rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            margin-bottom: 10px;
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-accent-line {
            display: block;
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }

        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header .section-subtitle {
                font-size: 0.9rem;
            }
        }

        /* ===== 玩法介绍卡片网格 ===== */
        .play-cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--card-gap);
        }
        .play-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .play-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-slow);
            border-radius: 0 0 4px 4px;
        }
        .play-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .play-card:hover::before {
            transform: scaleX(1);
        }
        .play-card-icon {
            font-size: 2.4rem;
            margin-bottom: 14px;
            display: block;
        }
        .play-card h3 {
            font-size: 1.15rem;
            font-weight: 680;
            color: var(--primary);
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .play-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .play-card .play-tag {
            display: inline-block;
            margin-top: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--highlight);
            background: rgba(224, 64, 56, 0.07);
            padding: 4px 12px;
            border-radius: var(--radius-full);
        }

        /* ===== 赛事推荐卡片 ===== */
        .match-cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: var(--card-gap);
        }
        .match-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .match-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .match-card-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            display: block;
        }
        .match-card-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .match-card-body .match-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }
        .match-card-body h3 {
            font-size: 1.1rem;
            font-weight: 680;
            color: var(--primary);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .match-card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
            flex: 1;
            margin-bottom: 12px;
        }
        .match-card-body .match-odds {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .odds-chip {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            background: var(--bg-warm);
            color: var(--accent-dark);
            border: 1px solid rgba(212, 168, 67, 0.3);
        }
        .odds-chip.highlight-chip {
            background: rgba(224, 64, 56, 0.07);
            color: var(--highlight);
            border-color: rgba(224, 64, 56, 0.25);
        }

        @media (max-width: 768px) {
            .match-cards-grid {
                grid-template-columns: 1fr;
            }
            .match-card-img {
                height: 160px;
            }
        }

        /* ===== 数据指标板块 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--card-gap);
            text-align: center;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 30px 18px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            margin-bottom: 8px;
            display: block;
        }
        .stat-card .stat-value {
            font-size: 2.2rem;
            font-weight: 750;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 4px;
        }
        .stat-card .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-card .stat-value {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 480px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .stat-value {
                font-size: 1.4rem;
            }
        }

        /* ===== 攻略列表 ===== */
        .guide-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: var(--card-gap);
        }
        .guide-item {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition-base);
            cursor: default;
        }
        .guide-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .guide-num {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-full);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .guide-content h4 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--primary);
            margin-bottom: 4px;
            letter-spacing: 0.02em;
        }
        .guide-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 520px) {
            .guide-list {
                grid-template-columns: 1fr;
            }
            .guide-item {
                padding: 16px 14px;
                gap: 12px;
            }
            .guide-num {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }
        }

        /* ===== FAQ板块 ===== */
        .faq-section {
            background: var(--bg-light);
            border-radius: var(--radius-xl);
            padding: 56px 36px;
            margin: 0 20px;
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 650;
            font-size: 1.02rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            letter-spacing: 0.02em;
            transition: background var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            background: rgba(13, 43, 69, 0.03);
        }
        .faq-question .faq-arrow {
            font-size: 1.2rem;
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .faq-section {
                padding: 36px 16px;
                margin: 0 8px;
                border-radius: var(--radius-lg);
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.93rem;
            }
            .faq-answer p {
                font-size: 0.85rem;
            }
        }

        /* ===== CTA板块 ===== */
        .cta-section {
            text-align: center;
            padding: 56px 24px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-xl);
            margin: 0 20px;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 500px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }
        .cta-btn-lg {
            display: inline-block;
            padding: 14px 36px;
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            font-weight: 650;
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 18px rgba(212, 168, 67, 0.4);
        }
        .cta-btn-lg:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 24px rgba(212, 168, 67, 0.55);
            transform: translateY(-2px);
        }
        .cta-btn-lg:active {
            transform: translateY(0);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 18px;
                margin: 0 8px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-btn-lg {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 28px;
            margin-top: 60px;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 650;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col p {
            font-size: 0.88rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-col ul li {
            margin-bottom: 7px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.02em;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 36px 0 20px;
                border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            }
        }

/* roulang page: category4 */
/* ============ 设计变量 ============ */
        :root {
            --color-primary: #0b2d4a;
            --color-primary-light: #143d61;
            --color-primary-dark: #061d31;
            --color-accent: #c8963e;
            --color-accent-light: #d4a853;
            --color-accent-dark: #a87a2e;
            --color-bg: #ffffff;
            --color-bg-alt: #f4f5f7;
            --color-bg-card: #ffffff;
            --color-bg-dark: #0b2d4a;
            --color-text: #1a1d28;
            --color-text-secondary: #5a5f6e;
            --color-text-light: #8b8f9a;
            --color-text-on-dark: #e8eaef;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f3;
            --color-success: #2d8b4e;
            --color-warning: #e8963e;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1180px;
            --header-height: 64px;
            --nav-dock-height: 56px;
            --section-gap: 64px;
            --section-gap-sm: 40px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.68;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            padding-top: 0;
        }

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

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

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ============ 容器 ============ */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ Header & 浮动 Dock 导航 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0;
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .nav-dock {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 8px;
        }

        .nav-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--color-bg-alt);
            border-radius: 28px;
            padding: 4px 6px;
            flex-shrink: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            white-space: nowrap;
            transition: all var(--transition-base);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: rgba(11, 45, 74, 0.05);
        }
        .nav-links a.active {
            color: #ffffff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .nav-links a.active:hover {
            color: #ffffff;
            background: var(--color-primary-light);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #ffffff;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(200, 150, 62, 0.3);
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-light);
            box-shadow: 0 4px 16px rgba(200, 150, 62, 0.45);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(200, 150, 62, 0.25);
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            color: var(--color-primary);
            line-height: 1;
            flex-shrink: 0;
        }

        /* ============ Hero 板块 ============ */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, #1a4d6e 100%);
            color: #ffffff;
            padding: 72px 0 64px;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, rgba(255, 255, 255, 0.06), transparent);
            z-index: 0;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .hero-content {
            max-width: 560px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
        }
        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .hero-content h1 span {
            color: var(--color-accent-light);
        }
        .hero-content .hero-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(200, 150, 62, 0.35);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 24px rgba(200, 150, 62, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            transform: translateY(-2px);
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            max-width: 100%;
            object-fit: cover;
        }

        /* ============ 板块通用样式 ============ */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .section-dark .section-header h2 {
            color: #ffffff;
        }
        .section-header .section-subtitle {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-dark .section-header .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ============ 玩法概述板块 ============ */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .overview-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
        }
        .overview-text p {
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .overview-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
        }

        /* ============ 优势卡片 ============ */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            text-align: center;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
            color: var(--color-accent);
        }
        .card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ============ 推荐列表 ============ */
        .recommend-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .recommend-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .recommend-card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }
        .recommend-card-body {
            padding: 20px;
        }
        .recommend-card-tag {
            display: inline-block;
            background: #fef3e0;
            color: var(--color-accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
        }
        .recommend-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .recommend-card .meta {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }

        /* ============ 数据统计 ============ */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            text-align: center;
            padding: 24px 16px;
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* ============ 步骤指南 ============ */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            position: relative;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            text-align: center;
            transition: all var(--transition-base);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #ffffff;
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ============ FAQ 板块 ============ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-size: 1.1rem;
            color: var(--color-accent);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* ============ CTA 板块 ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #ffffff;
            text-align: center;
            padding: 56px 0;
            border-radius: var(--radius-xl);
            margin: 0 24px;
        }
        .cta-section h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            background: var(--color-accent);
            color: #ffffff;
            box-shadow: 0 6px 24px rgba(200, 150, 62, 0.4);
            transition: all var(--transition-base);
        }
        .btn-cta-lg:hover {
            background: #ffffff;
            color: var(--color-primary);
            box-shadow: 0 8px 32px rgba(255, 255, 255, 0.3);
            transform: translateY(-3px);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #0a1e2f;
            color: #c5cdd5;
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #a0aab3;
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-col p {
            color: #a0aab3;
            font-size: 0.88rem;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #7a8490;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .recommend-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 12px;
                right: 12px;
                flex-direction: column;
                background: #ffffff;
                border-radius: var(--radius-lg);
                box-shadow: var(--shadow-xl);
                padding: 12px;
                gap: 2px;
                z-index: 999;
                border: 1px solid var(--color-border);
            }
            .nav-links.is-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                border-radius: var(--radius-md);
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .cards-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
            }
            .recommend-list {
                grid-template-columns: 1fr;
            }
            .section {
                padding: var(--section-gap-sm) 0;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .category-hero {
                padding: 48px 0 40px;
                min-height: auto;
            }
            .cta-section {
                margin: 0 12px;
                padding: 40px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .cards-grid,
            .stats-grid,
            .steps-list {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 1.35rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 14px;
            }
            .category-hero {
                padding: 36px 0 32px;
            }
            .recommend-list {
                grid-template-columns: 1fr;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0f2440;
            --color-primary-light: #1a3d5f;
            --color-accent: #c8963e;
            --color-accent-light: #d9b45a;
            --color-cta: #d4451a;
            --color-cta-hover: #b83714;
            --color-bg: #ffffff;
            --color-bg-alt: #f6f7f9;
            --color-bg-card: #ffffff;
            --color-bg-dark: #0a1a2e;
            --color-text: #1a1a2e;
            --color-text-secondary: #5a6070;
            --color-text-light: #8b919e;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f4;
            --color-success: #2d8b4e;
            --color-warning: #e8a020;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.13);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 64px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

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

        /* ===== 导航 Dock ===== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 16px;
            display: flex;
            justify-content: center;
            pointer-events: none;
        }

        .nav-dock {
            pointer-events: all;
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-full);
            padding: 6px 10px 6px 20px;
            box-shadow: var(--shadow-lg);
            max-width: 100%;
            transition: box-shadow var(--transition-normal);
        }

        .nav-dock:hover {
            box-shadow: var(--shadow-xl);
        }

        .nav-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }

        .nav-logo:hover {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-full);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--color-primary);
            background: rgba(15, 36, 64, 0.05);
        }

        .nav-links a.active {
            color: #ffffff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(15, 36, 64, 0.25);
        }

        .nav-links a.active:hover {
            background: var(--color-primary-light);
            color: #ffffff;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            color: #ffffff;
            background: var(--color-cta);
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 10px rgba(212, 69, 26, 0.30);
        }

        .nav-cta-btn:hover {
            background: var(--color-cta-hover);
            box-shadow: 0 4px 16px rgba(212, 69, 26, 0.40);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(15, 36, 64, 0.06);
        }

        /* ===== Hero 分类横幅 ===== */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #0a1a2e 0%, #122d4a 40%, #0f2440 100%);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 90px 0 80px;
            text-align: center;
            color: #ffffff;
            margin-top: -80px;
            border-radius: 0 0 var(--radius-xl) var(--radius-xl);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 26, 46, 0.55);
            z-index: 1;
        }

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

        .category-hero .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }

        .category-hero .breadcrumb a:hover {
            color: var(--color-accent-light);
        }

        .category-hero .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
            line-height: 1.25;
        }

        .category-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        .category-hero .hero-badge-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #ffffff;
        }

        .category-hero .hero-badge i {
            color: var(--color-accent-light);
            font-size: 0.8rem;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        .section-header {
            text-align: center;
            margin-bottom: 42px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            background: rgba(200, 150, 62, 0.08);
            padding: 5px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .section-header .section-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.65;
        }

        /* ===== 玩法介绍卡片 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
        }

        .intro-text p {
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
            font-size: 0.975rem;
        }

        .intro-text .feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 18px;
        }

        .intro-text .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.55;
        }

        .intro-text .feature-list li i {
            color: var(--color-accent);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-image img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
            transition: transform var(--transition-normal);
        }

        .intro-image:hover img {
            transform: scale(1.03);
        }

        /* ===== 数据统计卡片 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }

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

        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 10px;
        }

        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-card .stat-label {
            font-size: 0.875rem;
            color: var(--color-text-light);
            font-weight: 500;
        }

        /* ===== 赛事卡片 ===== */
        .match-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .match-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .match-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--color-border);
        }

        .match-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .match-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-normal);
        }

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

        .match-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            z-index: 2;
        }

        .match-card .card-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .match-card .card-body .match-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .match-card .card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
        }

        .match-card .card-body .match-info {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        .match-card .card-body .match-odds {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: auto;
            padding-top: 10px;
        }

        .match-card .card-body .odds-chip {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(15, 36, 64, 0.05);
            color: var(--color-primary);
            border: 1px solid var(--color-border-light);
        }

        .match-card .card-body .odds-chip.highlight {
            background: rgba(200, 150, 62, 0.1);
            color: var(--color-accent);
            border-color: rgba(200, 150, 62, 0.25);
        }

        /* ===== 投注攻略 ===== */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            counter-reset: guide;
        }

        .guide-step {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            counter-increment: guide;
        }

        .guide-step:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .guide-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }

        .guide-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .guide-step p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.975rem;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            list-style: none;
            user-select: none;
            transition: background var(--transition-fast);
        }

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

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--color-text-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item[open] summary {
            background: rgba(15, 36, 64, 0.03);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-item .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f2440 0%, #1a3d5f 100%);
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 64px 0;
            text-align: center;
            color: #ffffff;
            border-radius: var(--radius-xl);
            margin: 0 0 var(--section-gap) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 26, 46, 0.45);
            z-index: 1;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }

        .cta-section .cta-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(200, 150, 62, 0.35);
        }

        .btn-primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 20px rgba(200, 150, 62, 0.45);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-full);
            font-weight: 600;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-outline-sm {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-border);
        }

        .btn-outline-sm:hover {
            border-color: var(--color-primary);
            background: rgba(15, 36, 64, 0.04);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: #c5cdd8;
            padding: 48px 0 24px;
            margin-top: auto;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            line-height: 1.7;
            color: #a0aab6;
            margin-bottom: 6px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 7px;
        }

        .footer-col ul li a {
            color: #a0aab6;
            transition: color var(--transition-fast);
            font-size: 0.875rem;
        }

        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: #7a8490;
            line-height: 1.6;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .intro-image {
                order: -1;
                max-height: 340px;
                overflow: hidden;
            }

            .intro-image img {
                object-fit: cover;
                height: 100%;
            }

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

            .match-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .guide-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

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

            .category-hero h1 {
                font-size: 2.2rem;
            }

            .section {
                padding: 48px 0;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 8px;
                padding: 0 8px;
            }

            .nav-dock {
                border-radius: var(--radius-lg);
                padding: 8px 14px;
                flex-wrap: wrap;
                justify-content: space-between;
                gap: 4px;
            }

            .nav-links {
                display: none;
                order: 3;
                width: 100%;
                flex-direction: column;
                gap: 2px;
                padding-top: 6px;
                border-top: 1px solid var(--color-border-light);
                margin-top: 4px;
            }

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

            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 10px 14px;
                border-radius: var(--radius-md);
            }

            .nav-toggle {
                display: inline-flex;
                order: 2;
            }

            .nav-cta-btn {
                font-size: 0.82rem;
                padding: 7px 15px;
                order: 1;
            }

            .nav-logo {
                order: 0;
            }

            .category-hero {
                padding: 60px 0 50px;
                margin-top: -60px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }

            .category-hero h1 {
                font-size: 1.75rem;
            }

            .category-hero .hero-subtitle {
                font-size: 0.95rem;
            }

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

            .stat-card {
                padding: 20px 14px;
            }

            .stat-card .stat-number {
                font-size: 1.6rem;
            }

            .match-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .guide-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .section {
                padding: 36px 0;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

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

            .cta-section {
                border-radius: var(--radius-md);
                padding: 40px 0;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }

            .btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .category-hero h1 {
                font-size: 1.45rem;
            }

            .category-hero .hero-subtitle {
                font-size: 0.85rem;
            }

            .category-hero .hero-badge-row {
                gap: 8px;
            }

            .category-hero .hero-badge {
                font-size: 0.75rem;
                padding: 6px 10px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stat-card .stat-number {
                font-size: 1.35rem;
            }

            .stat-card .stat-label {
                font-size: 0.78rem;
            }

            .match-card .card-body {
                padding: 12px 14px;
            }

            .match-card .card-body h4 {
                font-size: 0.95rem;
            }

            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.9rem;
            }

            .faq-item .faq-answer {
                padding: 0 14px 16px;
                font-size: 0.82rem;
            }

            .section-header h2 {
                font-size: 1.3rem;
            }

            .nav-dock {
                border-radius: var(--radius-md);
                padding: 6px 10px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a365d;
            --color-primary-light: #264a74;
            --color-primary-dark: #0f2640;
            --color-accent: #c9a96e;
            --color-accent-light: #dcc090;
            --color-accent-dark: #b08950;
            --color-gold: #b8860b;
            --color-bg: #f8f7f4;
            --color-bg-alt: #f0efe9;
            --color-white: #ffffff;
            --color-text: #1a1a1a;
            --color-text-strong: #0d0d0d;
            --color-text-weak: #6b7280;
            --color-text-muted: #9ca3af;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.12);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'SF Mono', 'Menlo', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --header-height: 72px;
            --nav-dock-height: 60px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.75rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-2xl: 3rem;
            --spacing-3xl: 4rem;
            --spacing-section: 5rem;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }
        input {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }

        /* ========== HEADER & NAVIGATION ========== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 var(--spacing-lg);
            pointer-events: none;
        }
        .nav-dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 var(--spacing-xl);
            height: var(--nav-dock-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius-full);
            box-shadow: var(--shadow-lg);
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover {
            color: var(--color-accent-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-weak);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: rgba(26, 54, 93, 0.06);
        }
        .nav-links a.active {
            color: var(--color-white);
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 54, 93, 0.25);
        }
        .nav-links a.active:hover {
            background: var(--color-primary-light);
            color: var(--color-white);
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1.35rem;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-white);
            background: var(--color-accent);
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 10px rgba(201, 169, 110, 0.3);
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 4px 16px rgba(201, 169, 110, 0.4);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--color-primary);
            padding: 0.35rem;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
            transition: background var(--transition-fast);
        }
        .nav-toggle:hover {
            background: rgba(26, 54, 93, 0.06);
        }

        @media (max-width: 1024px) {
            .nav-links a {
                padding: 0.4rem 0.75rem;
                font-size: 0.85rem;
            }
            .nav-cta-btn {
                padding: 0.45rem 1rem;
                font-size: 0.82rem;
            }
            .nav-dock {
                padding: 0 var(--spacing-lg);
                gap: var(--spacing-md);
            }
        }
        @media (max-width: 768px) {
            .site-header {
                top: 8px;
                padding: 0 var(--spacing-sm);
            }
            .nav-dock {
                padding: 0 var(--spacing-md);
                height: 54px;
                border-radius: var(--radius-lg);
                position: relative;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: var(--radius-lg);
                padding: var(--spacing-md);
                box-shadow: var(--shadow-xl);
                border: 1px solid var(--color-border);
                gap: 4px;
                z-index: 1001;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 0.7rem 1rem;
                border-radius: var(--radius-md);
                text-align: center;
                font-size: 0.95rem;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-cta-btn {
                padding: 0.45rem 0.9rem;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .nav-dock {
                height: 48px;
                padding: 0 var(--spacing-sm);
                gap: var(--spacing-sm);
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .nav-cta-btn {
                padding: 0.4rem 0.7rem;
                font-size: 0.75rem;
                border-radius: var(--radius-full);
            }
            .nav-links a {
                font-size: 0.88rem;
                padding: 0.6rem 0.8rem;
            }
        }

        /* ========== MAIN ========== */
        .main-content {
            flex: 1;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            padding: var(--spacing-3xl) 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            min-height: 380px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 54, 93, 0.88) 0%, rgba(15, 38, 64, 0.78) 50%, rgba(26, 54, 93, 0.7) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-content {
            max-width: 700px;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.18);
            color: #ffe8c8;
            backdrop-filter: blur(6px);
            margin-bottom: var(--spacing-lg);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.03em;
        }
        .banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.01em;
        }
        .banner-content h1 .accent {
            color: var(--color-accent-light);
        }
        .banner-content .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
            margin-bottom: var(--spacing-xl);
            max-width: 600px;
        }
        .banner-actions {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 18px rgba(201, 169, 110, 0.35);
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 6px 24px rgba(201, 169, 110, 0.45);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }
        @media (max-width: 768px) {
            .page-banner {
                min-height: 300px;
                padding: var(--spacing-2xl) 0;
            }
            .banner-content h1 {
                font-size: 2rem;
            }
            .banner-content .banner-desc {
                font-size: 1rem;
            }
            .btn {
                padding: 0.6rem 1.4rem;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                min-height: 260px;
                padding: var(--spacing-xl) 0;
            }
            .banner-content h1 {
                font-size: 1.6rem;
            }
            .banner-badge {
                font-size: 0.78rem;
            }
            .banner-actions {
                gap: var(--spacing-sm);
            }
        }

        /* ========== SECTION ========== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: var(--spacing-sm);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            max-width: 650px;
            margin-bottom: var(--spacing-2xl);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-2xl);
        }
        .section-header .section-label {
            margin-bottom: var(--spacing-xs);
        }
        .section-header .section-title {
            margin-bottom: var(--spacing-md);
        }
        .section-header .section-subtitle {
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-3xl) 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .section {
                padding: var(--spacing-2xl) 0;
            }
            .section-title {
                font-size: 1.35rem;
            }
        }

        /* ========== CARDS ========== */
        .card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-border);
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }
        .stat-card {
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-lg);
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent-light);
        }
        .stat-icon {
            font-size: 2.2rem;
            margin-bottom: var(--spacing-sm);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: var(--spacing-xs);
        }
        .stat-number .unit {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--color-accent-dark);
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            font-weight: 500;
        }
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .stat-number {
                font-size: 2rem;
            }
            .stat-card {
                padding: var(--spacing-lg) var(--spacing-md);
            }
        }

        /* Info Grid */
        .info-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .info-grid.reverse {
            direction: rtl;
        }
        .info-grid.reverse>* {
            direction: ltr;
        }
        .info-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
            position: relative;
        }
        .info-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .info-image-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 0, 0, 0.05);
            pointer-events: none;
        }
        .info-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-md);
        }
        .info-text p {
            color: var(--color-text-weak);
            line-height: 1.85;
            margin-bottom: var(--spacing-md);
        }
        .info-highlights {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-lg);
        }
        .info-highlight-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.4rem 0.9rem;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(201, 169, 110, 0.1);
            color: var(--color-accent-dark);
        }
        @media (max-width: 768px) {
            .info-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .info-image-wrap {
                aspect-ratio: 16/9;
            }
            .info-text h3 {
                font-size: 1.3rem;
            }
        }

        /* ========== LIST CARDS ========== */
        .list-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .list-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
        }
        .list-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .list-card-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }
        .list-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .list-card:hover .list-card-image img {
            transform: scale(1.04);
        }
        .list-card-body {
            padding: var(--spacing-lg);
        }
        .list-card-tag {
            display: inline-block;
            padding: 0.25rem 0.7rem;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(26, 54, 93, 0.07);
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
        }
        .list-card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }
        .list-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        .list-card-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 1024px) {
            .list-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .list-cards {
                grid-template-columns: 1fr;
            }
        }

        /* ========== STEPS ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }
        .step-card {
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-lg);
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            position: relative;
            transition: all var(--transition-base);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: var(--spacing-md);
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: var(--spacing-sm);
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--spacing-lg) var(--spacing-xl);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-strong);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-md);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: transparent;
            border: none;
            font-family: inherit;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(26, 54, 93, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--transition-fast);
            color: var(--color-primary);
            font-weight: 700;
        }
        .faq-item.open .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 var(--spacing-xl) var(--spacing-lg);
            color: var(--color-text-weak);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        @media (max-width: 520px) {
            .faq-question {
                padding: var(--spacing-md) var(--spacing-lg);
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 var(--spacing-lg) var(--spacing-md);
                font-size: 0.88rem;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            padding: var(--spacing-3xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.025);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 550px;
            margin: 0 auto var(--spacing-xl);
            line-height: 1.7;
        }
        .cta-section .btn {
            font-size: 1rem;
            padding: 0.8rem 2.2rem;
        }
        .cta-section .btn-primary {
            background: var(--color-accent);
        }
        .cta-section .btn-primary:hover {
            background: var(--color-accent-light);
        }
        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--spacing-3xl) 0 var(--spacing-xl);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: var(--spacing-2xl);
            margin-bottom: var(--spacing-2xl);
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.03em;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--spacing-lg);
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xl);
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
        }