/* roulang page: index */
:root {
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
      --gold-gradient: linear-gradient(135deg, #F59E0B 0%, #D97706 50%, #B45309 100%);
      --bg-dark: #0B0F19;
      --card-dark: #111827;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --badge-glow: rgba(99, 102, 241, 0.25);
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: #E5E7EB;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    body {
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }
    .text-gradient {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .text-gold-gradient {
      background: var(--gold-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .card-glow {
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-glow:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 40px -10px rgba(99, 102, 241, 0.2);
      border-color: rgba(99, 102, 241, 0.35);
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.025em;
      border: 1px solid rgba(255, 255, 255, 0.12);
    }
    .sticky-nav-active {
      background-color: rgba(11, 15, 25, 0.92);
      backdrop-filter: blur(16px);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 8px;
    }
    ::-webkit-scrollbar-track {
      background: #0B0F19;
    }
    ::-webkit-scrollbar-thumb {
      background: #374151;
      border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
      background: #4B5563;
    }