/* roulang page: index */
:root {
      --primary: #0A1F2E;
      --accent: #E94E1B;
      --bg: #F7F8FA;
      --text: #334155;
      --muted: #64748B;
      --border: #E5E7EB;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
      line-height: 1.7;
      color: var(--text);
      background-color: var(--bg);
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }
    .container-custom {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    @media (min-width: 768px) {
      .container-custom {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    .nav-blur {
      background: rgba(255,255,255,0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(229,231,235,0.6);
    }
    .hero-gradient {
      background: linear-gradient(135deg, #0A1F2E 0%, #1A3A4C 100%);
    }
    .accent-glow {
      transition: box-shadow 0.2s ease, transform 0.2s ease;
    }
    .accent-glow:hover {
      box-shadow: 0 8px 20px rgba(233,78,27,0.2);
      transform: translateY(-2px);
    }
    .card-hover {
      transition: all 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 24px rgba(233,78,27,0.12);
    }
    .faq-accordion .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
    }
    .faq-accordion.open .faq-content {
      max-height: 300px;
      padding-top: 0.75rem;
    }
    .faq-accordion .faq-icon {
      transition: transform 0.25s ease;
    }
    .faq-accordion.open .faq-icon {
      transform: rotate(45deg);
    }
    input:focus, textarea:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(233,78,27,0.15);
    }
    .mobile-menu {
      transition: opacity 0.2s ease, transform 0.2s ease;
    }
    @media (max-width: 1023px) {
      .nav-links {
        display: none;
      }
    }