/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #0b1e3d;
            --color-primary-light: #132d56;
            --color-accent: #c41230;
            --color-accent-hover: #a00e28;
            --color-gold: #d4a843;
            --color-gold-light: #f0d078;
            --color-bg: #f5f6f8;
            --color-surface: #ffffff;
            --color-text: #1a1a2e;
            --color-text-weak: #5a6070;
            --color-text-muted: #88909e;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f4;
            --color-success: #0a8f4c;
            --color-info: #1a73e8;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --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(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 8px 28px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-xl: 0 16px 40px rgba(0,0,0,0.12), 0 6px 12px rgba(0,0,0,0.06);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 56px;
            --spacing-2xl: 80px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --header-height: 68px;
            --bottom-tab-height: 60px;
        }

        /* ========== 基础 Reset ========== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            overflow-x: hidden;
            padding-bottom: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            outline: none;
            transition: all var(--transition-normal);
        }
        button:focus-visible, a:focus-visible, .button:focus-visible {
            outline: 3px solid rgba(196, 18, 48, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }
        ul, ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        input, select, textarea {
            font-family: var(--font-body);
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }
        h1 { font-size: clamp(28px, 4vw, 48px); }
        h2 { font-size: clamp(24px, 3.2vw, 38px); }
        h3 { font-size: clamp(18px, 2.4vw, 26px); }
        h4 { font-size: clamp(16px, 1.8vw, 20px); }

        /* ========== 容器 ========== */
        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 14px;
            }
        }

        /* ========== 顶部导航 (桌面端) ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 12px rgba(0,0,0,0.18);
            transition: all var(--transition-normal);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: #ffffff;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo i {
            color: var(--color-gold);
            font-size: 26px;
        }
        .header-logo:hover {
            color: #ffffff;
            opacity: 0.9;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .header-nav a.nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.85);
            font-weight: 500;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-nav a.nav-link:hover {
            color: #ffffff;
            background: rgba(255,255,255,0.08);
        }
        .header-nav a.nav-link.active {
            color: #ffffff;
            background: rgba(255,255,255,0.14);
            font-weight: 600;
        }
        .header-nav a.nav-link i {
            font-size: 14px;
            opacity: 0.8;
        }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 24px;
            background: var(--color-accent);
            color: #ffffff !important;
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.4px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            box-shadow: 0 2px 10px rgba(196,18,48,0.35);
        }
        .header-cta-btn:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 4px 18px rgba(196,18,48,0.5);
            transform: translateY(-1px);
            color: #ffffff !important;
        }

        /* 移动端隐藏顶部导航链接 */
        @media (max-width: 768px) {
            .header-nav a.nav-link {
                display: none;
            }
            .header-cta-btn {
                padding: 8px 14px;
                font-size: 13px;
                border-radius: 20px;
            }
            .header-logo {
                font-size: 18px;
            }
            .header-logo i {
                font-size: 22px;
            }
            .site-header {
                height: 56px;
            }
        }

        /* ========== 移动端底部 Tab 导航 ========== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: #ffffff;
            border-top: 1px solid var(--color-border);
            height: var(--bottom-tab-height);
            box-shadow: 0 -2px 12px rgba(0,0,0,0.08);
            padding-bottom: env(safe-area-inset-bottom, 0);
        }
        .bottom-tab-nav .tab-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 500px;
            margin: 0 auto;
            padding: 0 6px;
        }
        .bottom-tab-nav a.tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            flex: 1;
            height: 100%;
            color: var(--color-text-muted);
            font-size: 10px;
            font-weight: 500;
            letter-spacing: 0.2px;
            transition: all var(--transition-fast);
            position: relative;
            padding: 4px 2px;
            border-radius: 6px;
        }
        .bottom-tab-nav a.tab-item i {
            font-size: 20px;
            transition: all var(--transition-fast);
        }
        .bottom-tab-nav a.tab-item.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        .bottom-tab-nav a.tab-item.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 25%;
            right: 25%;
            height: 3px;
            background: var(--color-accent);
            border-radius: 0 0 3px 3px;
        }
        .bottom-tab-nav a.tab-item:hover {
            color: var(--color-accent);
        }
        .bottom-tab-nav a.tab-item:active {
            transform: scale(0.94);
        }

        @media (max-width: 768px) {
            .bottom-tab-nav {
                display: block;
            }
            body {
                padding-bottom: calc(var(--bottom-tab-height) + env(safe-area-inset-bottom, 0px));
            }
        }

        /* ========== Hero 首屏 ========== */
        .hero-section {
            background: linear-gradient(160deg, #0b1e3d 0%, #132d56 35%, #0f2747 65%, #0a1a33 100%);
            position: relative;
            overflow: hidden;
            padding: 70px 0 80px;
            color: #ffffff;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -160px;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(212,168,67,0.13) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(196,18,48,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-text h1 {
            font-size: clamp(30px, 4.5vw, 52px);
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 18px;
            letter-spacing: 0.6px;
            line-height: 1.2;
        }
        .hero-text h1 .highlight {
            color: var(--color-gold);
            position: relative;
        }
        .hero-text .hero-desc {
            font-size: 17px;
            color: rgba(255,255,255,0.75);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 28px;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 20px rgba(196,18,48,0.4);
            transition: all var(--transition-normal);
            border: none;
            cursor: pointer;
        }
        .btn-primary-hero:hover {
            background: #d41435;
            box-shadow: 0 6px 26px rgba(196,18,48,0.55);
            transform: translateY(-2px);
            color: #ffffff;
        }
        .btn-outline-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 28px;
            background: transparent;
            color: #ffffff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.5px;
            border: 2px solid rgba(255,255,255,0.35);
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .btn-outline-hero:hover {
            border-color: #ffffff;
            background: rgba(255,255,255,0.06);
            color: #ffffff;
            transform: translateY(-2px);
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 440px;
        }
        .hero-live-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff;
            padding: 8px 18px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 0.5px;
            animation: pulse-badge 2s ease-in-out infinite;
            margin-bottom: 20px;
        }
        .hero-live-badge .live-dot {
            width: 10px;
            height: 10px;
            background: #ffffff;
            border-radius: 50%;
            animation: blink-dot 1s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { box-shadow: 0 0 0 0 rgba(196,18,48,0.5); }
            50% { box-shadow: 0 0 0 14px rgba(196,18,48,0); }
        }
        @keyframes blink-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        .hero-match-preview {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.14);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            backdrop-filter: blur(4px);
        }
        .hero-match-preview .match-teams {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            font-size: 22px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .hero-match-preview .match-teams .vs {
            color: var(--color-gold);
            font-size: 18px;
            font-weight: 800;
        }
        .hero-match-preview .match-info {
            text-align: center;
            color: rgba(255,255,255,0.6);
            font-size: 13px;
            letter-spacing: 0.5px;
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 40px 0 50px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .hero-text .hero-desc {
                max-width: 100%;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-visual {
                order: -1;
            }
            .hero-card-stack {
                max-width: 300px;
            }
            .btn-primary-hero, .btn-outline-hero {
                padding: 12px 22px;
                font-size: 14px;
            }
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: 60px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            color: var(--color-text);
            margin-bottom: 10px;
            font-weight: 800;
        }
        .section-header .section-subtitle {
            color: var(--color-text-weak);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(196,18,48,0.08);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-header {
                margin-bottom: 28px;
            }
        }

        /* ========== 直播分类卡片 ========== */
        .league-cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .league-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .league-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .league-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-normal);
            border-radius: 0 0 2px 2px;
        }
        .league-card:hover::after {
            transform: scaleX(1);
        }
        .league-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 14px;
            background: #f0f4f8;
            color: var(--color-primary);
            transition: all var(--transition-normal);
        }
        .league-card:hover .card-icon {
            background: var(--color-accent);
            color: #ffffff;
        }
        .league-card h4 {
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .league-card p {
            color: var(--color-text-weak);
            font-size: 13px;
            margin: 0;
            line-height: 1.5;
        }
        .league-card .live-tag {
            display: inline-block;
            margin-top: 10px;
            padding: 3px 10px;
            border-radius: 12px;
            background: #e8f5e9;
            color: var(--color-success);
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.4px;
        }
        @media (max-width: 1024px) {
            .league-cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .league-cards-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .league-card {
                padding: 18px 12px;
            }
            .league-card .card-icon {
                width: 44px;
                height: 44px;
                font-size: 20px;
            }
            .league-card h4 {
                font-size: 15px;
            }
        }

        /* ========== 数据统计板块 ========== */
        .stats-section {
            background: var(--color-primary);
            color: #ffffff;
            padding: 50px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            color: var(--color-gold);
            letter-spacing: 1px;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        /* ========== 热门赛事板块 ========== */
        .match-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .match-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .match-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateX(3px);
        }
        .match-time {
            flex-shrink: 0;
            text-align: center;
            min-width: 56px;
        }
        .match-time .date {
            font-size: 12px;
            color: var(--color-text-weak);
            letter-spacing: 0.4px;
        }
        .match-time .time {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
        }
        .match-detail {
            flex: 1;
            min-width: 0;
        }
        .match-detail .teams {
            font-weight: 700;
            font-size: 16px;
            color: var(--color-text);
        }
        .match-detail .league-name {
            font-size: 12px;
            color: var(--color-text-muted);
            letter-spacing: 0.3px;
        }
        .match-status {
            flex-shrink: 0;
        }
        .status-badge {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.4px;
        }
        .status-badge.upcoming {
            background: #fff3e0;
            color: #e65100;
        }
        .status-badge.live {
            background: #fce4ec;
            color: #c41230;
            animation: pulse-badge 2s ease-in-out infinite;
        }
        @media (max-width: 520px) {
            .match-item {
                padding: 14px 12px;
                gap: 10px;
            }
            .match-detail .teams {
                font-size: 14px;
            }
            .match-time .time {
                font-size: 16px;
            }
        }

        /* ========== 观看流程 ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .step-card {
            text-align: center;
            position: relative;
            padding: 32px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #ffffff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 20px;
            margin-bottom: 14px;
        }
        .step-card h4 {
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .step-card p {
            color: var(--color-text-weak);
            font-size: 14px;
            margin: 0;
            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 1fr;
                gap: 14px;
            }
            .step-card {
                padding: 20px 14px;
            }
        }

        /* ========== 特色优势 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-card .feature-icon {
            font-size: 32px;
            color: var(--color-accent);
        }
        .feature-card h4 {
            margin: 0;
            color: var(--color-text);
        }
        .feature-card p {
            color: var(--color-text-weak);
            font-size: 14px;
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ========== FAQ 板块 ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text);
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: #fafbfc;
        }
        .faq-question i {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: transform var(--transition-normal);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
            padding: 0 22px;
            color: var(--color-text-weak);
            font-size: 14px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ========== CTA 板块 ========== */
        .cta-section {
            background: linear-gradient(135deg, #0b1e3d 0%, #132d56 100%);
            color: #ffffff;
            text-align: center;
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(212,168,67,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #ffffff;
            margin-bottom: 10px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .cta-section .btn-primary-hero {
            font-size: 17px;
            padding: 15px 32px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0a1525;
            color: rgba(255,255,255,0.65);
            padding: 48px 0 30px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
        }
        .footer-brand .footer-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 20px;
            color: #ffffff;
            margin-bottom: 10px;
            display: block;
        }
        .footer-brand p {
            color: rgba(255,255,255,0.5);
            font-size: 13px;
            line-height: 1.6;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 15px;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 13px;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 36px;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: rgba(255,255,255,0.35);
            letter-spacing: 0.3px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .site-footer {
                padding: 36px 0 20px;
            }
        }

        /* ========== Foundation 覆盖 ========== */
        .row {
            max-width: 1240px;
        }
        .foundation-override .button {
            border-radius: var(--radius-sm);
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-normal);
        }

        /* ========== 通用工具类 ========== */
        .text-center { text-align: center; }
        .mb-0 { margin-bottom: 0; }
        .mt-0 { margin-top: 0; }
        .bg-white { background: var(--color-surface); }
        .bg-light { background: var(--color-bg); }

        /* ========== 搜索框样式 ========== */
        .search-inline {
            display: inline-flex;
            align-items: center;
            background: rgba(255,255,255,0.1);
            border-radius: 24px;
            padding: 6px 8px 6px 16px;
            gap: 6px;
            border: 1px solid rgba(255,255,255,0.15);
            transition: all var(--transition-normal);
        }
        .search-inline:focus-within {
            background: rgba(255,255,255,0.18);
            border-color: rgba(255,255,255,0.35);
            box-shadow: 0 0 0 4px rgba(255,255,255,0.05);
        }
        .search-inline input {
            background: transparent;
            border: none;
            color: #ffffff;
            font-size: 14px;
            width: 140px;
            outline: none;
        }
        .search-inline input::placeholder {
            color: rgba(255,255,255,0.45);
        }
        .search-inline button {
            background: var(--color-accent);
            color: #ffffff;
            border: none;
            border-radius: 20px;
            width: 36px;
            height: 36px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all var(--transition-normal);
        }
        .search-inline button:hover {
            background: var(--color-accent-hover);
        }
        @media (max-width: 768px) {
            .search-inline {
                display: none;
            }
        }

        /* ========== 滚动条美化 ========== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        ::-webkit-scrollbar-thumb {
            background: #c1c5ca;
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #a5a9ae;
        }

        /* ========== 选择文本 ========== */
        ::selection {
            background: rgba(196,18,48,0.2);
            color: var(--color-text);
        }