/* roulang page: index */
:root {
      --deep-blue: #0A1128;
      --cyan-light: #00F0FF;
      --warm-red: #FF4D4D;
      --card-bg: #1A202C;
      --fog-white: #F8FAFC;
      --rock-gray: #4A5568;
      --shadow-elevation: 0 10px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
      --border-radius-xl: 1.25rem;
      --transition-smooth: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--fog-white);
      color: #1e293b;
      line-height: 1.625;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }
    button, .btn {
      cursor: pointer;
      font-family: inherit;
      transition: var(--transition-smooth);
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    @media (min-width: 640px) {
      .container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    @media (min-width: 1024px) {
      .container {
        padding-left: 2.5rem;
        padding-right: 2.5rem;
      }
    }

    /* 悬浮胶囊导航 */
    .nav-capsule {
      position: sticky;
      top: 1rem;
      z-index: 50;
      background: rgba(10, 17, 40, 0.8);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-radius: 9999px;
      padding: 0.75rem 1.8rem;
      margin: 1rem auto 0;
      max-width: 720px;
      width: fit-content;
      box-shadow: 0 8px 20px rgba(0,0,0,0.25);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }
    .nav-logo {
      font-weight: 700;
      font-size: 1.25rem;
      color: white;
      letter-spacing: 0.5px;
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }
    .nav-logo i {
      color: var(--cyan-light);
    }
    .nav-links {
      display: flex;
      gap: 1.8rem;
      align-items: center;
      font-weight: 500;
      color: #e2e8f0;
    }
    .nav-links a {
      color: #e2e8f0;
      font-size: 0.95rem;
      position: relative;
      padding-bottom: 2px;
    }
    .nav-links a:hover {
      color: var(--cyan-light);
    }
    .nav-links a.active {
      color: var(--cyan-light);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--cyan-light);
      border-radius: 2px;
    }
    .mobile-menu-btn {
      display: none;
      color: white;
      font-size: 1.6rem;
      background: none;
      border: none;
    }
    @media (max-width: 768px) {
      .nav-capsule {
        max-width: 95%;
        padding: 0.7rem 1.5rem;
      }
      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 1rem;
        margin-top: 1rem;
        background: rgba(10,17,40,0.95);
        padding: 1.2rem;
        border-radius: 2rem;
      }
      .nav-links.open {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
    }

    /* 卡片与按钮 */
    .card-soft {
      background: white;
      border-radius: var(--border-radius-xl);
      box-shadow: var(--shadow-elevation);
      transition: var(--transition-smooth);
    }
    .card-soft:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 30px -12px rgba(0,0,0,0.2);
    }
    .btn-primary {
      background: var(--cyan-light);
      color: var(--deep-blue);
      font-weight: 700;
      padding: 0.8rem 2rem;
      border-radius: 9999px;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      border: none;
      letter-spacing: 0.3px;
    }
    .btn-primary:hover {
      background: #33f5ff;
      filter: drop-shadow(0 4px 10px rgba(0,240,255,0.5));
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--cyan-light);
      color: var(--cyan-light);
      font-weight: 600;
      padding: 0.75rem 1.8rem;
      border-radius: 9999px;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    .btn-outline:hover {
      background: rgba(0,240,255,0.1);
    }

    /* 赛事卡片装饰 */
    .live-match-card {
      background: rgba(26,32,44,0.9);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: 1.5rem;
      padding: 1.8rem;
      color: white;
    }
    .score-number {
      font-family: 'Courier New', monospace;
      font-weight: 700;
      font-size: 2.8rem;
      line-height: 1;
    }