/* roulang page: index */
:root {
            --primary: #064E3B;
            --primary-light: #059669;
            --primary-dark: #022c22;
            --secondary: #0F172A;
            --secondary-light: #1E293B;
            --accent-orange: #F59E0B;
            --accent-green: #10B981;
            --bg-base: #F8FAFC;
            --bg-surface: #FFFFFF;
            --bg-dark: #0B0F19;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border-color: #E2E8F0;
            --border-dark: #1E293B;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-subtle: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            --shadow-elevated: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 基础与重置 */
        * { box-sizing: border-box; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            margin: 0;
            padding: 0;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        h1, h2, h3, h4, h5, h6 {
            color: var(--secondary);
            font-weight: 700;
            line-height: 1.25;
            margin-top: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-smooth);
        }
        a:hover { color: var(--primary-light); }

        /* 动画与状态 */
        @keyframes pulseGlow {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }
        .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--accent-green);
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 8px var(--accent-green);
            animation: pulseGlow 1.8s infinite ease-in-out;
        }

        /* 容器重定义 */
        .hub-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* 统一板块排版 */
        .section-padding {
            padding: 5rem 0;
        }
        .section-header {
            margin-bottom: 3.5rem;
        }
        .section-badge {
            display: inline-flex;
            align-items: center;
            padding: 0.35rem 0.85rem;
            background-color: rgba(5, 150, 105, 0.1);
            color: var(--primary-light);
            font-size: 0.8125rem;
            font-weight: 600;
            border-radius: 9999px;
            margin-bottom: 0.85rem;
            letter-spacing: 0.04em;
        }
        .section-title {
            font-size: clamp(1.75rem, 3.5vw, 2.35rem);
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 780px;
            line-height: 1.7;
        }

        /* 滚动收缩双层导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: #FFFFFF;
            transition: all 0.3s ease;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }
        .site-header.scrolled {
            box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.1);
            background-color: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
        }
        .nav-top-row {
            background-color: var(--secondary);
            color: #FFFFFF;
            padding: 0.4rem 0;
            font-size: 0.8125rem;
            transition: height 0.3s ease, opacity 0.3s ease;
        }
        .site-header.scrolled .nav-top-row {
            display: none;
        }
        .nav-main-row {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            transition: height 0.3s ease;
        }
        .site-header.scrolled .nav-main-row {
            height: 60px;
            border-bottom-color: transparent;
        }
        .brand-logo {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: -0.02em;
        }
        .brand-logo i { color: var(--primary-light); }
        .nav-actions .btn-live {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 0.55rem 1.25rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.875rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .nav-actions .btn-live:hover {
            background-color: var(--primary-light);
        }

        /* 按钮通用 */
        .btn-primary-hub {
            background-color: var(--primary-light);
            color: #FFFFFF !important;
            padding: 0.85rem 1.85rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
            border: 1px solid transparent;
        }
        .btn-primary-hub:hover {
            background-color: #047857;
            transform: translateY(-2px);
        }
        .btn-secondary-hub {
            background-color: transparent;
            color: #FFFFFF !important;
            padding: 0.85rem 1.85rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .btn-secondary-hub:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #FFFFFF;
        }

        /* 板块一：沉浸式 Hero 枢纽 */
        .hero-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #064E3B 100%);
            color: #FFFFFF;
            padding-top: 130px;
            padding-bottom: 5rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.15) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-title {
            color: #FFFFFF;
            font-size: clamp(2.1rem, 4.5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 1.25rem;
        }
        .hero-desc {
            color: #CBD5E1;
            font-size: 1.1rem;
            line-height: 1.75;
            margin-bottom: 2rem;
            max-width: 680px;
        }
        .hero-timer-banner {
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .timer-digits {
            display: flex;
            gap: 0.75rem;
        }
        .timer-unit {
            background: rgba(255, 255, 255, 0.1);
            padding: 0.4rem 0.75rem;
            border-radius: var(--radius-sm);
            text-align: center;
            min-width: 48px;
        }
        .timer-val { font-size: 1.25rem; font-weight: 800; color: var(--accent-orange); display: block; }
        .timer-lbl { font-size: 0.65rem; text-transform: uppercase; color: #94A3B8; }

        .hero-stream-card {
            background: #0B0F19;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            position: relative;
        }
        .stream-status-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 0.85rem;
            margin-bottom: 1.25rem;
            font-size: 0.8125rem;
        }
        .match-matchup {
            display: flex;
            align-items: center;
            justify-content: space-around;
            padding: 1rem 0;
            text-align: center;
        }
        .team-meta {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
        }
        .team-icon-placeholder {
            width: 56px;
            height: 56px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .match-score {
            font-size: 2.5rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.1em;
        }

        /* 板块二：痛点卡片 */
        .pain-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            height: 100%;
            transition: var(--transition-smooth);
        }
        .pain-card:hover {
            border-color: #EF4444;
            transform: translateY(-4px);
            box-shadow: var(--shadow-elevated);
        }
        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(239, 68, 68, 0.1);
            color: #EF4444;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 1.25rem;
        }

        /* 通用卡片容器 */
        .hub-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem;
            transition: var(--transition-smooth);
            height: 100%;
        }
        .hub-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-elevated);
            border-color: var(--primary-light);
        }

        /* 步骤流程卡片 */
        .step-num-badge {
            font-size: 2.5rem;
            font-weight: 800;
            color: rgba(5, 150, 105, 0.15);
            line-height: 1;
            margin-bottom: 0.75rem;
        }

        /* 数据指标大字 */
        .metric-val {
            font-size: clamp(2.25rem, 4vw, 3.25rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -0.03em;
        }
        .metric-lbl {
            font-size: 0.9375rem;
            color: var(--text-muted);
            margin-top: 0.35rem;
        }

        /* 赛程列表 */
        .schedule-row {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 1.25rem 1.5rem;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition-smooth);
            flex-wrap: wrap;
            gap: 1rem;
        }
        .schedule-row:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-subtle);
        }

        /* 监控终端卡片 */
        .node-status-card {
            background: #0B0F19;
            color: #FFFFFF;
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-sm);
            padding: 1.25rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* FAQ 手风琴 */
        .faq-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
        }
        .faq-q {
            padding: 1.25rem 1.5rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: #FFFFFF;
            transition: var(--transition-smooth);
        }
        .faq-q:hover {
            background: #F8FAFC;
        }
        .faq-a {
            padding: 0 1.5rem 1.25rem 1.5rem;
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* 终极 CTA */
        .cta-band {
            background: linear-gradient(135deg, var(--secondary) 0%, #064E3B 100%);
            border-radius: var(--radius-lg);
            padding: 4.5rem 2rem;
            color: #FFFFFF;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        /* 页脚规范 */
        .site-footer {
            background-color: var(--secondary);
            color: #94A3B8;
            padding: 4.5rem 0 2rem 0;
            font-size: 0.875rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-col-title {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.65rem;
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 3.5rem;
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }

        @media (max-width: 768px) {
            .hero-title { font-size: 1.95rem; }
            .section-padding { padding: 3.5rem 0; }
            .schedule-row { flex-direction: column; align-items: flex-start; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }