/* roulang page: index */
:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --accent: #059669;
      --accent-cyan: #06b6d4;
      --bg-light: #f8fafc;
      --card-border: rgba(226, 232, 240, 0.85);
      --text-main: #0f172a;
      --text-muted: #64748b;
      --radius-lg: 20px;
      --radius-xl: 24px;
      --shadow-soft: 0 10px 30px -5px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 20px 35px -8px rgba(37, 99, 235, 0.12);
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }
    body {
      color: var(--text-main);
      background-color: var(--bg-light);
      -webkit-font-smoothing: antialiased;
    }
    .custom-container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .hero-gold-badge {
      background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(217, 119, 6, 0.05) 100%);
      border: 1px solid rgba(245, 158, 11, 0.35);
    }
    .badge-emerald {
      background-color: #ecfdf5;
      color: #047857;
      border: 1px solid #a7f3d0;
    }
    .badge-blue {
      background-color: #eff6ff;
      color: #1d4ed8;
      border: 1px solid #bfdbfe;
    }
    .glass-nav {
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }
    .card-modern {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-soft);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-modern:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(37, 99, 235, 0.3);
    }
    .btn-gradient {
      background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 60%, #06b6d4 100%);
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-gradient:hover {
      box-shadow: 0 10px 22px -4px rgba(37, 99, 235, 0.4);
      transform: translateY(-2px);
    }
    .btn-gradient:active {
      transform: translateY(0);
    }
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10b981;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse-ring 1.8s infinite cubic-bezier(0.66, 0, 0, 1);
    }
    @keyframes pulse-ring {
      to {
        box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
      }
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }