/* roulang page: index */
:root {
      --deep-blue: #0B0E14;
      --cyan: #00E5FF;
      --orange: #FF6B35;
      --orange-hover: #E55A2B;
      --bg-light: #F4F7FA;
      --text-dark: #2C3A4B;
      --text-gray: #5A6A7E;
      --white: #FFFFFF;
      --card-shadow: 0 4px 20px rgba(0,0,0,0.06);
      --card-shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
      --border-radius-card: 12px;
      --border-radius-btn: 8px;
      --font-mono: "SF Mono", "Roboto Mono", "Courier New", monospace;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background-color: rgba(11, 14, 20, 0.92);
      backdrop-filter: blur(8px);
      z-index: 50;
      border-bottom: 1px solid rgba(0, 229, 255, 0.15);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .logo-text {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--white);
      letter-spacing: 1px;
      text-decoration: none;
      position: relative;
    }
    .logo-text::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 3px;
      background-color: var(--cyan);
      border-radius: 2px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-link {
      color: #ccc;
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s;
      font-size: 1rem;
    }
    .nav-link:hover {
      color: var(--cyan);
    }
    .live-badge {
      background-color: var(--cyan);
      color: var(--deep-blue);
      font-weight: 700;
      font-size: 0.8rem;
      padding: 4px 12px;
      border-radius: 20px;
      margin-left: 8px;
      animation: pulse 1.8s infinite;
      letter-spacing: 0.5px;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.8; transform: scale(1.05); }
      100% { opacity: 1; transform: scale(1); }
    }
    .btn-primary {
      background-color: var(--orange);
      color: white;
      padding: 12px 24px;
      border-radius: var(--border-radius-btn);
      font-weight: 700;
      text-decoration: none;
      display: inline-block;
      transition: background-color 0.2s, transform 0.1s;
      border: none;
      cursor: pointer;
      font-size: 1rem;
    }
    .btn-primary:hover {
      background-color: var(--orange-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      border: 2px solid var(--cyan);
      color: var(--cyan);
      background: transparent;
      padding: 10px 24px;
      border-radius: var(--border-radius-btn);
      font-weight: 700;
      text-decoration: none;
      display: inline-block;
      transition: background-color 0.2s, color 0.2s;
      cursor: pointer;
    }
    .btn-outline:hover {
      background-color: rgba(0, 229, 255, 0.1);
      color: white;
    }
    /* 汉堡菜单 */
    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: white;
      cursor: pointer;
    }
    .mobile-menu {
      display: none;
      flex-direction: column;
      background-color: rgba(11, 14, 20, 0.98);
      padding: 20px;
      gap: 16px;
    }
    /* Hero */
    .hero-section {
      padding: 140px 0 80px;
      background: linear-gradient(135deg, #0B0E14 0%, #1A1F2B 100%);
      color: white;
    }
    .score-card-mock {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(4px);
      border: 1px solid rgba(0, 229, 255, 0.3);
      border-radius: 16px;
      padding: 20px;
      box-shadow: 0 0 25px rgba(0, 229, 255, 0.15);
    }
    .team-name {
      font-weight: 700;
      font-size: 1.2rem;
    }
    .score-number {
      font-family: var(--font-mono);
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--cyan);
      text-shadow: 0 0 8px rgba(0,229,255,0.5);
    }
    /* 卡片通用 */
    .card {
      background: var(--white);
      border-radius: var(--border-radius-card);
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      height: 100%;
    }
    .card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
    }
    .icon-circle {
      width: 48px;
      height: 48px;
      background-color: rgba(0, 229, 255, 0.12);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--cyan);
      font-size: 1.5rem;
    }
    .faq-item {
      border-bottom: 1px solid rgba(0, 229, 255, 0.2);
    }
    .faq-question {
      cursor: pointer;
      padding: 20px 0;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background-color: #f0f4f8;
      border-radius: 8px;
      margin-bottom: 8px;
    }
    .faq-answer.open {
      max-height: 200px;
      padding: 16px;
    }
    .q-badge {
      background-color: var(--orange);
      color: white;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    footer {
      background-color: var(--deep-blue);
      color: #ccc;
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .mobile-menu.show {
        display: flex;
      }
      .hero-section {
        padding: 120px 0 60px;
        text-align: center;
      }
      .hero-grid {
        flex-direction: column;
      }
      h1 {
        font-size: 2.2rem !important;
      }
    }