/* roulang page: index */
:root {
            --brand-dark: #0b0f19;
            --brand-navy: #0f172a;
            --brand-green: #059669;
            --brand-neon: #10b981;
            --brand-accent: #f59e0b;
            --brand-danger: #ef4444;
            --text-main: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --border-color: rgba(226, 232, 240, 0.9);
            --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 30px -4px rgba(5, 150, 105, 0.15);
            --radius-md: 8px;
            --radius-pill: 9999px;
            --transition-speed: 0.25s;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all var(--transition-speed) ease;
        }
        a:hover, a:focus {
            color: var(--brand-neon);
            text-decoration: none;
        }

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

        /* 顶部品牌导航栏 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(11, 15, 25, 0.97);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-top-bar {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .brand-logo-text {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #ffffff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .brand-logo-text i {
            color: var(--brand-neon);
            font-size: 24px;
        }
        .header-meta-group {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 20px;
            color: #94a3b8;
            font-size: 13px;
        }
        .live-tag-node {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(16, 185, 129, 0.12);
            color: var(--brand-neon);
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
        }
        .pulse-dot {
            width: 7px;
            height: 7px;
            background-color: var(--brand-neon);
            border-radius: 50%;
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            animation: livePulse 1.8s infinite;
        }
        @keyframes livePulse {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }

        .header-channel-bar {
            padding: 0;
            overflow-x: auto;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
        }
        .channel-nav-list {
            list-style: none;
            display: flex;
            margin: 0;
            padding: 0;
        }
        .channel-nav-item a {
            display: inline-block;
            padding: 14px 20px;
            color: #cbd5e1;
            font-size: 14px;
            font-weight: 500;
            border-bottom: 2px solid transparent;
        }
        .channel-nav-item a:hover,
        .channel-nav-item a.is-active {
            color: #ffffff;
            border-bottom-color: var(--brand-neon);
            background: rgba(255, 255, 255, 0.02);
        }

        /* 基础 Section 规范 */
        .app-section {
            padding: 96px 0;
            position: relative;
        }
        .section-dark {
            background-color: var(--brand-dark);
            color: #ffffff;
        }
        .section-white {
            background-color: #ffffff;
        }
        .section-slate {
            background-color: var(--bg-light);
        }

        .section-header-block {
            margin-bottom: 56px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            position: relative;
        }
        .section-dark .section-title {
            color: #ffffff;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 820px;
            line-height: 1.8;
            margin: 0;
        }
        .section-dark .section-desc {
            color: #94a3b8;
        }
        .badge-kicker {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--brand-green);
            background: rgba(5, 150, 105, 0.1);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }
        .section-dark .badge-kicker {
            color: var(--brand-neon);
            background: rgba(16, 185, 129, 0.15);
        }

        /* 按钮与卡片系统 */
        .btn-sport-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--brand-green);
            color: #ffffff !important;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 4px;
            box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
            cursor: pointer;
        }
        .btn-sport-main:hover {
            background-color: var(--brand-neon);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-sport-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #ffffff !important;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .btn-sport-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-2px);
        }

        .sport-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-subtle);
            transition: all var(--transition-speed) ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .sport-card:hover {
            border-color: var(--brand-neon);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        /* Section 1: Hero 首屏卡片堆叠 */
        .hero-banner-section {
            background-color: var(--brand-dark);
            background-image: linear-gradient(180deg, rgba(11, 15, 25, 0.85) 0%, rgba(11, 15, 25, 0.98) 100%), url('/assets/images/ca3bd3e12d7f6f30.jpg');
            background-size: cover;
            background-position: center;
            padding: 80px 0 100px;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }
        .hero-h1 {
            font-size: 42px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -1px;
            margin-bottom: 20px;
            color: #ffffff;
        }
        .hero-lead-text {
            font-size: 16px;
            color: #94a3b8;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-action-row {
            display: flex;
            gap: 16px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .hero-meta-kpi {
            display: flex;
            gap: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
        }
        .hero-kpi-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--brand-neon);
            font-family: monospace;
        }
        .hero-kpi-label {
            font-size: 13px;
            color: #64748b;
        }

        /* Hero 卡片堆叠 */
        .hero-stack-container {
            position: relative;
            min-height: 480px;
        }
        .stack-card {
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 24px;
            position: absolute;
            transition: all var(--transition-speed) ease;
        }
        .stack-card-main {
            width: 85%;
            top: 20px;
            left: 5%;
            z-index: 3;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            border-top: 3px solid var(--brand-neon);
        }
        .stack-card-side-left {
            width: 75%;
            top: 0;
            left: 0;
            z-index: 1;
            opacity: 0.5;
            transform: scale(0.92) translateY(-20px);
        }
        .stack-card-side-right {
            width: 80%;
            bottom: -20px;
            right: 0;
            z-index: 4;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
            border-left: 3px solid var(--brand-accent);
        }
        .fixture-match-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin: 16px 0;
            padding: 12px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 4px;
        }
        .fixture-team {
            font-weight: 700;
            font-size: 15px;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .fixture-score {
            font-size: 22px;
            font-weight: 900;
            color: var(--brand-neon);
            font-family: monospace;
            padding: 0 10px;
        }

        /* 滚动跑马灯条 */
        .ticker-strip {
            background: #050811;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 10px 0;
            font-size: 13px;
            color: #94a3b8;
            overflow: hidden;
        }
        .ticker-flex {
            display: flex;
            gap: 40px;
            white-space: nowrap;
        }
        .ticker-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* Section 2: 系统架构 */
        .tech-arch-image-wrap {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-subtle);
        }
        .tech-arch-image-wrap img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        /* Section 3: 核心矩阵 6宫格 */
        .grid-icon-box {
            width: 48px;
            height: 48px;
            background: rgba(5, 150, 105, 0.1);
            color: var(--brand-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            border-radius: 6px;
            margin-bottom: 20px;
        }
        .grid-number-tag {
            font-size: 12px;
            font-weight: 700;
            color: #94a3b8;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        /* Section 4: 焦点赛程 */
        .league-header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 12px;
            margin-bottom: 16px;
        }
        .league-name {
            font-weight: 700;
            font-size: 15px;
            color: var(--brand-navy);
        }
        .live-status-badge {
            background: rgba(239, 68, 68, 0.1);
            color: var(--brand-danger);
            font-size: 12px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* Section 7: 数据统计条 */
        .metric-block {
            text-align: center;
            padding: 30px 20px;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }
        .metric-block:last-child {
            border-right: none;
        }
        .metric-value {
            font-size: 44px;
            font-weight: 900;
            color: #ffffff;
            font-family: monospace;
            line-height: 1;
            margin-bottom: 8px;
        }
        .metric-title {
            font-size: 14px;
            color: #94a3b8;
            font-weight: 500;
        }

        /* Section 8: 客户评价 */
        .quote-icon {
            font-size: 24px;
            color: var(--brand-neon);
            margin-bottom: 16px;
            opacity: 0.8;
        }
        .testimonial-author-group {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }
        .author-avatar-stub {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand-navy);
        }

        /* Section 9: 资讯卡片 */
        .news-big-card img {
            height: 240px;
            width: 100%;
            object-fit: cover;
            border-radius: 6px;
            margin-bottom: 16px;
        }
        .news-list-item {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-item-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--brand-navy);
            margin-bottom: 6px;
        }
        .news-item-date {
            font-size: 12px;
            color: #94a3b8;
        }

        /* Section 10: FAQ 手风琴 */
        .faq-card-unit {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }
        .faq-summary {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 16px;
            color: var(--brand-navy);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-summary:hover {
            color: var(--brand-green);
        }
        .faq-content {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* Section 11: 保障条 */
        .guarantee-bar {
            background: #ffffff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 40px 0;
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .guarantee-icon {
            font-size: 28px;
            color: var(--brand-green);
        }
        .guarantee-title {
            font-weight: 700;
            font-size: 16px;
            color: var(--brand-navy);
        }
        .guarantee-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Footer 页脚 */
        .site-footer {
            background-color: var(--brand-dark);
            color: #94a3b8;
            padding: 80px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
        }
        .footer-heading {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-links-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links-list li {
            margin-bottom: 10px;
        }
        .footer-links-list a {
            color: #94a3b8;
        }
        .footer-links-list a:hover {
            color: #ffffff;
        }
        .footer-bottom-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 60px;
            padding-top: 30px;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* 响应式调整 */
        @media screen and (max-width: 1024px) {
            .hero-stack-container {
                min-height: 400px;
                margin-top: 40px;
            }
            .stack-card-main {
                width: 90%;
                left: 5%;
            }
        }
        @media screen and (max-width: 768px) {
            .app-section {
                padding: 56px 0;
            }
            .hero-h1 {
                font-size: 30px;
            }
            .hero-stack-container {
                display: none;
            }
            .metric-block {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .metric-block:last-child {
                border-bottom: none;
            }
            .header-meta-group {
                display: none;
            }
        }