/* roulang page: index */
:root {
      --primary: #0E7490;
      --primary-dark: #155E75;
      --primary-light: #0284C7;
      --secondary: #10B981;
      --accent: #F59E0B;
      --bg-page: #F8FAFC;
      --bg-dark: #0F172A;
      --bg-slate: #1E293B;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.85);
      --radius-card: 20px;
      --shadow-card: 0 10px 30px -10px rgba(14, 116, 144, 0.08);
      --shadow-hover: 0 20px 40px -12px rgba(14, 116, 144, 0.16);
    }
    
    html {
      scroll-behavior: smooth;
    }
    
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-body);
      line-height: 1.65;
    }

    .custom-card {
      border-radius: var(--radius-card);
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .custom-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .badge-pill {
      border-radius: 9999px;
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.875rem;
      font-size: 0.8125rem;
      font-weight: 600;
    }

    .pulse-dot {
      width: 0.5rem;
      height: 0.5rem;
      border-radius: 9999px;
      animation: pulseDot 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }

    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    .btn-gradient {
      background: linear-gradient(135deg, #0E7490 0%, #0284C7 100%);
      color: #FFFFFF;
      transition: all 0.25s ease;
    }
    .btn-gradient:hover {
      background: linear-gradient(135deg, #155E75 0%, #0369A1 100%);
      box-shadow: 0 10px 20px -5px rgba(2, 132, 199, 0.4);
      transform: translateY(-1px);
    }

    details > summary::-webkit-details-marker {
      display: none;
    }
    details[open] .faq-icon {
      transform: rotate(45deg);
    }