/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --primary: #0a1e3d;
            --primary-light: #132d54;
            --primary-lighter: #1c3d6e;
            --accent: #c8a84e;
            --accent-light: #e0c878;
            --accent-dark: #a88830;
            --green: #1e8449;
            --green-light: #28a35c;
            --bg: #f4f6f9;
            --bg-white: #ffffff;
            --bg-dark: #060f1f;
            --text: #1a1a2e;
            --text-light: #5a6a7e;
            --text-lighter: #8899aa;
            --text-on-dark: #e8ecf2;
            --border: #e2e8f0;
            --border-light: #eef1f5;
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-pill: 50px;
            --shadow-xs: 0 1px 4px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 2px 16px rgba(0,0,0,0.07);
            --shadow-md: 0 4px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.13);
            --shadow-xl: 0 12px 56px rgba(0,0,0,0.17);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }
        
        /* ============ Reset & Base ============ */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }
        
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-lighter);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 2px;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, .btn {
            cursor: pointer;
            font-family: var(--font-body);
            transition: all var(--transition);
        }
        button:focus-visible, .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        
        input {
            font-family: var(--font-body);
        }
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-top: 0;
        }
        
        ul, ol {
            padding-left: 1.2em;
        }
        
        /* ============ 容器 ============ */
        .container-custom {
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        
        @media (min-width: 1200px) {
            .container-custom {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        
        /* ============ 导航 Header ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: all var(--transition);
        }
        
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary);
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .nav-brand:hover {
            color: var(--primary-light);
        }
        .nav-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        
        /* 分段标签导航 */
        .nav-tabs-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            border-radius: var(--radius-pill);
            padding: 5px 7px;
            border: 1px solid var(--border);
        }
        
        .nav-tab-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-light);
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            border: 2px solid transparent;
            background: transparent;
            cursor: pointer;
            letter-spacing: 0.01em;
        }
        .nav-tab-chip:hover {
            color: var(--text);
            background: rgba(0,0,0,0.03);
        }
        .nav-tab-chip.active {
            background: var(--bg-white);
            color: var(--primary);
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
            font-weight: 700;
        }
        .nav-tab-chip .chip-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--green);
            display: inline-block;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.55; transform: scale(1.35); }
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.88rem;
            background: var(--accent);
            color: var(--primary);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-nav-cta:hover {
            background: var(--accent-light);
            color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-nav-cta:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        
        /* 移动端导航调整 */
        @media (max-width: 768px) {
            .site-header {
                height: auto;
                min-height: 58px;
                padding: 8px 0;
            }
            .site-header .container-custom {
                flex-wrap: wrap;
                gap: 8px;
            }
            .nav-brand {
                font-size: 1.05rem;
            }
            .nav-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .nav-tabs-custom {
                order: 3;
                width: 100%;
                justify-content: center;
                border-radius: var(--radius);
                padding: 4px 6px;
            }
            .nav-tab-chip {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
            .btn-nav-cta {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
        }
        
        @media (max-width: 520px) {
            .nav-brand {
                font-size: 0.95rem;
                gap: 6px;
            }
            .nav-brand .brand-icon {
                width: 26px;
                height: 26px;
                font-size: 0.75rem;
                border-radius: 6px;
            }
            .nav-tab-chip {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .btn-nav-cta {
                padding: 6px 12px;
                font-size: 0.75rem;
                gap: 3px;
            }
        }
        
        /* ============ Hero / 首屏 ============ */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #060f1f 0%, #0a1e3d 30%, #132d54 60%, #0f2640 100%);
            color: var(--text-on-dark);
            padding: 80px 0 90px;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200,168,78,0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(30,132,73,0.10) 0%, transparent 70%);
            pointer-events: none;
        }
        
        .hero-geo-lines {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            opacity: 0.06;
            background: repeating-linear-gradient(
                45deg,
                transparent,
                transparent 40px,
                rgba(255,255,255,0.5) 40px,
                rgba(255,255,255,0.5) 41px
            );
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: var(--radius-pill);
            padding: 7px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-light);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--green-light);
            animation: pulse-dot 2s infinite;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            color: #ffffff;
            letter-spacing: 0.01em;
        }
        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 32px;
            line-height: 1.65;
            max-width: 560px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1rem;
            background: var(--accent);
            color: var(--primary);
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .btn-hero-primary:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 28px rgba(200,168,78,0.35);
            transform: translateY(-2px);
            color: var(--primary);
        }
        .btn-hero-primary:active {
            transform: translateY(0);
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255,255,255,0.35);
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .btn-hero-outline:hover {
            border-color: rgba(255,255,255,0.7);
            background: rgba(255,255,255,0.06);
            color: #ffffff;
            box-shadow: 0 4px 20px rgba(255,255,255,0.08);
        }
        
        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-stats-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.14);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            gap: 18px;
            min-width: 200px;
        }
        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            line-height: 1.3;
        }
        
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-subtitle {
                font-size: 1.02rem;
            }
            .hero-stats-card {
                padding: 20px 22px;
                gap: 12px;
            }
            .hero-stat-num {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 50px 0 55px;
                min-height: auto;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
                text-align: center;
            }
            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-visual {
                margin-top: 30px;
                justify-content: center;
            }
            .hero-stats-card {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
                gap: 20px;
                padding: 18px 22px;
            }
        }
        @media (max-width: 520px) {
            .hero-section {
                padding: 36px 0 40px;
            }
            .hero-title {
                font-size: 1.45rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 5px 12px;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 11px 22px;
                font-size: 0.88rem;
                width: 100%;
                justify-content: center;
            }
            .hero-buttons {
                flex-direction: column;
                width: 100%;
            }
            .hero-stats-card {
                flex-direction: column;
                align-items: center;
                padding: 14px 18px;
                gap: 10px;
            }
            .hero-stat-num {
                font-size: 1.3rem;
            }
        }
        
        /* ============ 板块通用 ============ */
        .section-block {
            padding: 64px 0;
        }
        .section-block.alt-bg {
            background: var(--bg-white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent-dark);
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 42px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .section-header {
                margin-bottom: 28px;
            }
        }
        @media (max-width: 520px) {
            .section-block {
                padding: 32px 0;
            }
            .section-title {
                font-size: 1.3rem;
            }
        }
        
        /* ============ 核心优势卡片 ============ */
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .feature-icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .feature-icon-wrap.blue {
            background: #e8f0fa;
            color: var(--primary-light);
        }
        .feature-icon-wrap.gold {
            background: #fdf6e3;
            color: var(--accent-dark);
        }
        .feature-icon-wrap.green {
            background: #e6f4ec;
            color: var(--green);
        }
        .feature-icon-wrap.purple {
            background: #f0eafa;
            color: #6b3fa0;
        }
        .feature-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.55;
        }
        
        /* ============ 热门赛事卡片 ============ */
        .match-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .match-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: transparent;
        }
        .match-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }
        .match-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.03em;
        }
        .match-tag.group {
            background: #e8f0fa;
            color: var(--primary-light);
        }
        .match-tag.knockout {
            background: #fdf6e3;
            color: var(--accent-dark);
        }
        .match-tag.live {
            background: #fde8e8;
            color: #c0392b;
            animation: pulse-bg 2s infinite;
        }
        @keyframes pulse-bg {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }
        .match-teams {
            display: flex;
            align-items: center;
            justify-content: space-around;
            gap: 10px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text);
        }
        .match-vs {
            font-size: 0.85rem;
            color: var(--text-lighter);
            font-weight: 600;
            background: var(--bg);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .match-info {
            font-size: 0.8rem;
            color: var(--text-light);
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .btn-match-watch {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.85rem;
            background: var(--primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            width: 100%;
            text-align: center;
        }
        .btn-match-watch:hover {
            background: var(--primary-light);
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        
        /* ============ 观看指南步骤 ============ */
        .step-card {
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
            background: var(--primary);
            box-shadow: var(--shadow);
            position: relative;
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-connector {
                display: block;
                position: absolute;
                top: 44px;
                right: -30px;
                width: 60px;
                height: 2px;
                background: var(--border);
            }
            .step-card {
                position: relative;
            }
            .step-card:last-child .step-connector {
                display: none;
            }
        }
        
        /* ============ 数据统计 ============ */
        .stats-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 32px;
            color: #fff;
        }
        .stat-item-large {
            text-align: center;
            padding: 14px 10px;
        }
        .stat-num-large {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label-large {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-block {
                padding: 32px 16px;
                border-radius: var(--radius-lg);
            }
            .stat-num-large {
                font-size: 1.8rem;
            }
            .stat-label-large {
                font-size: 0.78rem;
            }
        }
        
        /* ============ FAQ ============ */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text);
            background: transparent;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary-light);
            background: rgba(0,0,0,0.015);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--transition);
            color: var(--text-light);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        
        /* ============ CTA 板块 ============ */
        .cta-section {
            background: linear-gradient(150deg, #0a1e3d 0%, #132d54 50%, #0f2640 100%);
            border-radius: var(--radius-xl);
            padding: 52px 36px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200,168,78,0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-title {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-desc {
            font-size: 1rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 38px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1.05rem;
            background: var(--accent);
            color: var(--primary);
            border: none;
            transition: all var(--transition);
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .btn-cta-large:hover {
            background: var(--accent-light);
            box-shadow: 0 8px 32px rgba(200,168,78,0.4);
            transform: translateY(-2px);
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-title {
                font-size: 1.35rem;
            }
            .btn-cta-large {
                padding: 13px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .cta-section {
                padding: 28px 16px;
            }
            .cta-title {
                font-size: 1.15rem;
            }
            .cta-desc {
                font-size: 0.85rem;
            }
            .btn-cta-large {
                padding: 12px 22px;
                font-size: 0.88rem;
                width: 100%;
                justify-content: center;
            }
        }
        
        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 40px 0 28px;
            font-size: 0.88rem;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-desc {
            color: rgba(255,255,255,0.5);
            font-size: 0.85rem;
            max-width: 400px;
            line-height: 1.5;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-links a {
            color: rgba(255,255,255,0.55);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 28px;
            padding-top: 18px;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 28px 0 20px;
                text-align: center;
            }
            .footer-desc {
                max-width: 100%;
                margin: 0 auto 16px;
            }
            .footer-links {
                justify-content: center;
                gap: 12px;
            }
        }
        
        /* ============ 辅助组件 ============ */
        .divider-light {
            border: none;
            border-top: 1px solid var(--border);
            margin: 0;
        }
        
        /* 设备兼容图标区 */
        .device-icon-group {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            align-items: center;
        }
        .device-item {
            text-align: center;
            padding: 12px 16px;
        }
        .device-item i {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 6px;
            display: block;
        }
        .device-item span {
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
        }
        
        /* 滚动条美化 */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: transparent;
        }
        ::-webkit-scrollbar-thumb {
            background: #c0c8d4;
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #a0a8b4;
        }
        
        /* 覆盖 Bootstrap 默认 */
        .btn:focus {
            box-shadow: none;
        }
        .row > * {
            padding-left: 10px;
            padding-right: 10px;
        }
        .row {
            margin-left: -10px;
            margin-right: -10px;
        }
        @media (max-width: 768px) {
            .row > * {
                padding-left: 8px;
                padding-right: 8px;
            }
            .row {
                margin-left: -8px;
                margin-right: -8px;
            }
        }