/* roulang page: index */
:root {
      --primary: #1B5E20;
      --primary-hover: #2E7D32;
      --accent: #E65100;
      --accent-hover: #FF8F00;
      --bg-warm: #FAFAF7;
      --bg-mint: #F1F5F2;
      --text-main: #1C2520;
      --text-muted: #56635B;
      --border-soft: #E2E8E4;
      --shadow-sm: 0 4px 20px -2px rgba(27, 94, 32, 0.06);
      --shadow-hover: 0 12px 28px -4px rgba(27, 94, 32, 0.14);
      --radius-main: 16px;
    }

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-warm);
    }

    body {
      overflow-x: hidden;
      line-height: 1.75;
    }

    .custom-container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    .card-modern {
      background: #ffffff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-main);
      box-shadow: var(--shadow-sm);
      transition: all 0.28s ease;
    }

    .card-modern:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(46, 125, 50, 0.35);
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      padding: 0.35rem 0.85rem;
      border-radius: 9999px;
      font-size: 0.825rem;
      font-weight: 600;
    }

    .btn-brand {
      background-color: var(--primary);
      color: #ffffff;
      font-weight: 600;
      border-radius: 9999px;
      padding: 0.75rem 1.75rem;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
    }
    .btn-brand:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 8px 16px rgba(27, 94, 32, 0.25);
    }

    .btn-accent {
      background-color: var(--accent);
      color: #ffffff;
      font-weight: 600;
      border-radius: 9999px;
      padding: 0.75rem 1.75rem;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 8px 16px rgba(230, 81, 0, 0.25);
    }

    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary .faq-icon {
      transform: rotate(180deg);
    }