/* roulang page: index */
:root {
      --primary-teal: #0D9488;
      --primary-teal-dark: #0F766E;
      --accent-glow: #2DD4BF;
      --accent-alert: #F97316;
      --bg-slate: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-subtle: rgba(13, 148, 136, 0.12);
      --card-radius: 1.25rem;
      --shadow-soft: 0 10px 30px -5px rgba(13, 148, 136, 0.08);
      --shadow-elevated: 0 20px 40px -10px rgba(15, 23, 42, 0.12);
    }
    body {
      background-color: var(--bg-slate);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .custom-card {
      background-color: var(--bg-card);
      border-radius: var(--card-radius);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-soft);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      box-shadow: var(--shadow-elevated);
      border-color: rgba(45, 212, 191, 0.35);
      transform: translateY(-3px);
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-glow);
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.7);
      animation: pulse 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
    }
    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(45, 212, 191, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(45, 212, 191, 0); }
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }
    details[open] {
      border-left: 4px solid var(--primary-teal);
    }