/* roulang page: index */
:root {
      --primary: #0B1A3A;
      --accent: #00E676;
      --bg: #F4F6F9;
      --card: #FFFFFF;
      --text-main: #1A1A2E;
      --text-secondary: #5A6070;
      --border: #E2E6ED;
      --success: #00C853;
      --warning: #FF9100;
      --radius: 12px;
      --shadow-sm: 0 4px 20px rgba(11,26,58,0.06);
      --shadow-hover: 0 8px 30px rgba(11,26,58,0.12);
      --font-mono: 'Roboto Mono', 'Courier New', monospace;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --transition: all 0.25s ease;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background: var(--bg);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
      transition: var(--transition);
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 16px;
      }
    }

    /* 导航 - 悬浮胶囊 */
    .nav-capsule {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 640px;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: 40px;
      padding: 8px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 10px 25px rgba(11,26,58,0.08);
      z-index: 1000;
      transition: var(--transition);
    }
    .logo-text {
      font-weight: 700;
      font-size: 20px;
      letter-spacing: -0.3px;
      color: var(--primary);
      margin-right: 24px;
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 4px;
      border-bottom: 2px solid transparent;
    }
    .nav-links a:hover {
      color: var(--accent);
      border-bottom-color: var(--accent);
    }
    .mobile-menu-btn {
      display: none;
      background: var(--accent);
      width: 48px;
      height: 48px;
      border-radius: 50%;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 24px;
      position: fixed;
      bottom: 24px;
      right: 24px;
      z-index: 1001;
      box-shadow: 0 8px 20px rgba(0,230,118,0.3);
    }
    @media (max-width: 768px) {
      .nav-capsule {
        display: none;
      }
      .mobile-menu-btn {
        display: flex;
      }
      .mobile-nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(11,26,58,0.92);
        backdrop-filter: blur(16px);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: 1000;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
      }
      .mobile-nav-overlay.active {
        opacity: 1;
        pointer-events: auto;
      }
      .mobile-nav-overlay a {
        color: white;
        font-size: 22px;
        font-weight: 600;
        letter-spacing: 1px;
      }
    }

    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
    }

    h2 {
      font-size: 28px;
      line-height: 38px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    h3 {
      font-size: 20px;
      font-weight: 600;
    }

    /* Hero */
    #hero {
      padding-top: 140px;
      background: linear-gradient(135deg, #F4F6F9 0%, #E8ECF1 100%);
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 48px;
    }
    .hero-content {
      flex: 1;
    }
    .hero-content h1 {
      font-size: 36px;
      font-weight: 700;
      line-height: 1.3;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
      color: var(--primary);
    }
    .hero-content .sub {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 32px;
      max-width: 72ch;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--accent);
      color: var(--primary);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: 8px;
      font-size: 16px;
      box-shadow: 0 4px 12px rgba(0,230,118,0.25);
    }
    .btn-primary:hover {
      background: #00c853;
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: 8px;
    }
    .btn-secondary:hover {
      background: var(--primary);
      color: white;
    }
    .hero-visual {
      flex: 1;
      position: relative;
    }
    .score-card-mock {
      background: rgba(11,26,58,0.85);
      backdrop-filter: blur(8px);
      border-radius: 24px;
      padding: 24px;
      color: white;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      box-shadow: var(--shadow-hover);
    }
    .live-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--warning);
      color: #000;
      font-weight: 700;
      font-size: 13px;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 16px;
    }
    .blink-dot {
      width: 8px;
      height: 8px;
      background: white;
      border-radius: 50%;
      animation: pulse 1.2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.5); }
      100% { opacity: 1; transform: scale(1); }
    }
    .teams {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 24px;
      font-weight: 700;
      font-family: var(--font-mono);
    }
    .score {
      font-size: 36px;
      color: var(--accent);
      font-family: var(--font-mono);
      text-shadow: 0 0 8px rgba(0,230,118,0.5);
    }
    @media (max-width: 768px) {
      .hero-grid {
        flex-direction: column;
      }
      .btn-group .btn-primary, .btn-group .btn-secondary {
        width: 100%;
        text-align: center;
      }
    }

    /* 优势卡片 2+1 布局 */
    .features-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-top: 32px;
    }
    .feature-card {
      background: var(--card);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .feature-icon {
      font-size: 28px;
      color: var(--accent);
      margin-bottom: 12px;
    }
    @media (max-width: 768px) {
      .features-grid {
        grid-template-columns: 1fr;
      }
    }

    /* 数据深色条 */
    #stats {
      background: var(--primary);
      color: white;
      text-align: center;
    }
    .stats-grid {
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 32px;
      margin-top: 32px;
    }
    .stat-item .stat-number {
      font-family: var(--font-mono);
      font-size: 40px;
      font-weight: 700;
      color: var(--accent);
    }

    /* 赛事案例 横向滚动 */
    .case-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 16px;
      margin-top: 24px;
    }
    .case-card {
      min-width: 260px;
      background: var(--card);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      flex-shrink: 0;
    }
    .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .case-img {
      height: 150px;
      background-size: cover;
      background-position: center;
      border-radius: var(--radius) var(--radius) 0 0;
    }
    .case-info {
      padding: 16px;
    }
    .match-score {
      font-family: var(--font-mono);
      font-size: 22px;
      font-weight: 700;
      color: var(--accent);
    }

    /* 流程 */
    .steps {
      display: flex;
      gap: 40px;
      margin-top: 32px;
    }
    .step {
      flex: 1;
      text-align: center;
    }
    .step-num {
      background: var(--accent);
      color: var(--primary);
      width: 48px;
      height: 48px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 22px;
      margin: 0 auto 16px;
    }
    @media (max-width: 768px) {
      .steps {
        flex-direction: column;
      }
    }

    /* FAQ */
    .faq-item {
      background: var(--card);
      border-radius: var(--radius);
      margin-bottom: 12px;
      padding: 0 20px;
      border-bottom: 1px solid var(--border);
    }
    .faq-question {
      font-weight: 600;
      padding: 18px 0;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #F8F9FB;
      padding: 0 16px;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      padding: 16px;
    }

    /* CTA */
    #contact {
      background: linear-gradient(135deg, #0B1A3A 0%, #132D5E 100%);
      color: white;
      text-align: center;
      border-radius: 32px;
      margin: 60px 24px;
      padding: 60px 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 32px;
      margin-top: 32px;
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }