/* roulang page: index */
:root {
      --primary: #E33B1E;
      --primary-deep: #C02A14;
      --secondary: #1A1A2E;
      --accent: #F5A623;
      --bg-warm: #F5F5F0;
      --text-main: #1E1E1E;
      --text-muted: #5A5A5A;
      --success: #0F9D58;
      --white: #FFFFFF;
      --card-bg: #FAFAF8;
      --border-light: rgba(0,0,0,0.04);
      --shadow-card: 0 2px 12px rgba(26,26,46,0.08);
      --shadow-hover: 0 8px 24px rgba(26,26,46,0.15);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-tag: 6px;
      --font-title: 'Noto Sans SC', sans-serif;
      --font-body: 'Noto Sans SC', sans-serif;
      --font-mono: 'Roboto Mono', monospace;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-main);
      background-color: var(--bg-warm);
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, .button {
      font-family: var(--font-body);
      cursor: pointer;
    }
    /* 导航透明玻璃 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      background: rgba(255,255,255,0.7);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(0,0,0,0.06);
      box-shadow: 0 2px 20px rgba(0,0,0,0.04);
      transition: background 0.3s, backdrop-filter 0.3s;
    }
    .site-header.scrolled {
      background: rgba(245,245,240,0.95);
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .logo {
      font-family: var(--font-title);
      font-weight: 800;
      font-size: 22px;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 8px;
      letter-spacing: -0.3px;
    }
    .logo i {
      font-size: 24px;
      color: var(--primary);
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
      list-style: none;
      margin: 0;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--secondary);
      transition: color 0.2s;
      position: relative;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.2s;
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-cta {
      background: var(--primary);
      color: white;
      padding: 10px 20px;
      border-radius: var(--radius-tag);
      font-weight: 600;
      font-size: 15px;
      transition: background 0.2s, transform 0.2s;
    }
    .nav-cta:hover {
      background: var(--primary-deep);
      transform: scale(1.03);
      color: white;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 26px;
      color: var(--secondary);
    }
    /* 移动导航 */
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(255,255,255,0.96);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1px solid rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .header-inner {
        height: 64px;
      }
    }
    /* Hero */
    .hero {
      padding: 140px 0 80px;
      background: var(--bg-warm);
      position: relative;
      overflow: hidden;
    }
    .hero .container {
      display: flex;
      align-items: center;
      gap: 40px;
    }
    .hero-left {
      flex: 0 0 58.33%;
    }
    .hero-right {
      flex: 0 0 41.66%;
      display: flex;
      justify-content: center;
    }
    .hero h1 {
      font-family: var(--font-title);
      font-weight: 800;
      font-size: 48px;
      line-height: 1.2;
      color: var(--secondary);
      letter-spacing: -0.3px;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 18px;
      line-height: 1.6;
      color: var(--text-muted);
      max-width: 480px;
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 16px;
      border: none;
      transition: background 0.2s, transform 0.2s;
      display: inline-block;
    }
    .btn-primary:hover {
      background: var(--primary-deep);
      transform: scale(1.03);
      color: white;
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 16px;
      transition: all 0.2s;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
      border-color: var(--primary);
    }
    .score-card {
      background: var(--secondary);
      border-radius: 16px;
      padding: 28px 24px;
      color: white;
      box-shadow: 0 20px 30px rgba(0,0,0,0.2);
      transform: rotate(1deg);
      width: 100%;
      max-width: 320px;
      font-family: var(--font-mono);
    }
    .live-tag {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--accent);
      font-size: 14px;
      margin-bottom: 16px;
    }
    .live-dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      animation: pulse 1.2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.6; transform: scale(1.1); }
      100% { opacity: 1; transform: scale(1); }
    }
    .score-teams {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 22px;
      font-weight: 500;
    }
    .score-number {
      font-size: 36px;
      font-weight: 700;
      color: var(--accent);
    }
    @media (max-width: 768px) {
      .hero .container {
        flex-direction: column;
        text-align: center;
      }
      .hero-left, .hero-right {
        flex: 1 1 auto;
        width: 100%;
      }
      .hero h1 {
        font-size: 36px;
      }
      .hero-sub {
        max-width: 100%;
      }
      .hero-buttons {
        justify-content: center;
      }
      .score-card {
        transform: none;
        margin-top: 32px;
      }
    }
    /* 亮点网格 */
    .highlights {
      padding: 80px 0;
    }
    .section-title {
      font-family: var(--font-title);
      font-weight: 700;
      font-size: 36px;
      letter-spacing: -0.3px;
      color: var(--secondary);
      margin-bottom: 48px;
      text-align: center;
    }
    .grid-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .grid-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .grid-card.wide {
      grid-column: span 2;
      background: rgba(26,26,46,0.03);
    }
    .card-icon {
      font-size: 28px;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .grid-card h3 {
      font-family: var(--font-title);
      font-weight: 700;
      font-size: 22px;
      margin-bottom: 12px;
      color: var(--secondary);
    }
    .grid-card p {
      color: var(--text-muted);
      font-size: 16px;
    }
    @media (max-width: 768px) {
      .grid-cards {
        grid-template-columns: 1fr;
      }
      .grid-card.wide {
        grid-column: span 1;
      }
    }
    /* 赛事瀑布 */
    .timeline {
      padding: 80px 0;
      background: var(--white);
    }
    .timeline-list {
      max-width: 720px;
      margin: 0 auto;
      position: relative;
    }
    .timeline-item {
      display: flex;
      align-items: center;
      gap: 20px;
      margin-bottom: 20px;
      background: var(--card-bg);
      border-radius: 10px;
      padding: 20px;
      border: 1px solid var(--border-light);
      position: relative;
    }
    .time-badge {
      font-family: var(--font-mono);
      font-size: 14px;
      color: var(--text-muted);
      min-width: 70px;
    }
    .match-info {
      flex: 1;
      font-weight: 600;
    }
    .score-highlight {
      font-family: var(--font-mono);
      font-weight: 700;
      font-size: 22px;
      color: var(--accent);
    }
    .update-tag {
      background: var(--accent);
      color: white;
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 12px;
      margin-left: 8px;
    }
    @media (max-width: 768px) {
      .timeline-item {
        flex-wrap: wrap;
      }
    }
    /* 对比表 */
    .compare {
      padding: 80px 0;
    }
    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }
    .compare-col {
      background: white;
      padding: 32px;
    }
    .compare-col:first-child {
      border-right: 1px solid #eaeaea;
    }
    .compare-col h3 {
      font-size: 24px;
      margin-bottom: 24px;
    }
    .compare-row {
      display: flex;
      justify-content: space-between;
      padding: 16px 0;
      border-bottom: 1px solid #f0f0f0;
      align-items: center;
    }
    .green-check {
      color: var(--success);
    }
    .gray-minus {
      color: #aaa;
    }
    @media (max-width: 768px) {
      .compare-grid {
        grid-template-columns: 1fr;
      }
      .compare-col:first-child {
        border-right: none;
        border-bottom: 1px solid #eaeaea;
      }
    }
    /* 数据信任带 */
    .trust-bar {
      background: var(--secondary);
      padding: 80px 0;
      color: white;
    }
    .stats-grid {
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 24px;
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 40px;
      font-weight: 700;
      color: var(--accent);
    }
    .stat-label {
      color: #ccc;
      margin-top: 8px;
    }
    /* FAQ */
    .faq {
      padding: 80px 0;
    }
    .accordion {
      max-width: 800px;
      margin: 0 auto;
    }
    .accordion-item {
      background: white;
      border-radius: var(--radius-card);
      margin-bottom: 12px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
      overflow: hidden;
    }
    .accordion-btn {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      font-weight: 600;
      font-size: 18px;
      background: white;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .accordion-content {
      padding: 0 24px 20px;
      color: var(--text-muted);
      display: none;
      background: #FAFAF8;
    }
    .accordion-item.active .accordion-content {
      display: block;
    }
    /* CTA */
    .bottom-cta {
      background: var(--primary);
      padding: 80px 0;
      text-align: center;
      color: white;
    }
    .bottom-cta h2 {
      font-size: 32px;
      margin-bottom: 32px;
    }
    .cta-buttons {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .btn-white-outline {
      background: transparent;
      border: 2px solid white;
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
    }
    .btn-white-solid {
      background: white;
      color: var(--primary);
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
    }
    /* 页脚 */
    .site-footer {
      background: var(--secondary);
      color: #ccc;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    .footer-logo {
      font-size: 22px;
      font-weight: 800;
      color: white;
    }
    .footer-links a {
      display: block;
      color: #ccc;
      margin-bottom: 8px;
    }
    .social-icons i {
      font-size: 20px;
      margin-right: 12px;
      color: #ccc;
    }
    .copyright {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      text-align: center;
      font-size: 14px;
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }