/* roulang page: index */
:root {
      --primary: #5C3D2E;
      --primary-dark: #3E2518;
      --gold: #C9A96E;
      --gold-light: rgba(201,169,110,0.18);
      --bg: #FAF7F2;
      --bg-secondary: #F5EFE6;
      --card: #FFFFFF;
      --text-main: #2C1F14;
      --text-secondary: #6B5D52;
      --text-muted: #9C8B7A;
      --success: #2D6A4F;
      --warning: #B8432A;
      --radius-lg: 1rem;
      --radius-md: 0.75rem;
      --radius-sm: 0.5rem;
      --shadow-sm: 0 2px 12px rgba(92,61,46,0.06);
      --shadow-md: 0 8px 30px rgba(92,61,46,0.12);
      --font-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
      --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --transition: 0.3s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, .serif {
      font-family: var(--font-serif);
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--primary);
    }
    h1 {
      font-size: clamp(2.5rem, 6vw, 3.5rem);
      line-height: 1.25;
    }
    h2 {
      font-size: clamp(1.8rem, 4vw, 2.3rem);
      letter-spacing: -0.01em;
    }
    h3 {
      font-size: 1.25rem;
      font-weight: 600;
    }
    .text-gold {
      color: var(--gold);
    }
    .border-gold {
      border-color: var(--gold);
    }
    .bg-gold-soft {
      background-color: rgba(201,169,110,0.12);
    }
    .gradient-brand {
      background: linear-gradient(135deg, #5C3D2E 0%, #8B6914 100%);
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .section {
      margin-top: 5rem;
      margin-bottom: 5rem;
    }
    @media (min-width: 1024px) {
      .section {
        margin-top: 6rem;
        margin-bottom: 6rem;
      }
    }
    .card {
      background: var(--card);
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid rgba(201,169,110,0.2);
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    }
    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: rgba(201,169,110,0.5);
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      padding: 0.85rem 2rem;
      border-radius: 0.5rem;
      font-weight: 500;
      font-size: 0.95rem;
      letter-spacing: 0.3px;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: background var(--transition), box-shadow var(--transition);
      border: none;
      cursor: pointer;
      text-decoration: none;
      white-space: nowrap;
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: 0 4px 14px rgba(92,61,46,0.4);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--gold);
      color: var(--primary);
      padding: 0.8rem 2rem;
      border-radius: 0.5rem;
      font-weight: 500;
      transition: background var(--transition), border-color var(--transition);
      text-decoration: none;
      white-space: nowrap;
    }
    .btn-outline:hover {
      background: rgba(201,169,110,0.12);
      border-color: var(--primary);
    }
    .badge {
      background: linear-gradient(135deg, #C9A96E, #B2914A);
      color: #2C1F14;
      font-weight: 700;
      font-size: 0.7rem;
      padding: 0.2rem 0.8rem;
      border-radius: 0.4rem;
      letter-spacing: 0.3px;
      display: inline-block;
    }
    .stat-number {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 1.8rem;
      color: var(--primary);
    }
    .faq-item {
      border: 1px solid rgba(201,169,110,0.2);
      border-radius: 0.5rem;
      background: white;
      margin-bottom: 0.8rem;
      transition: border-color var(--transition);
    }
    .faq-item.active {
      border-color: var(--gold);
    }
    footer {
      background: #2C1F14;
      color: #C9A96E;
      padding: 3rem 1.5rem 2rem;
    }
    .nav-blur {
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }
    @media (max-width: 768px) {
      .card {
        padding: 1.5rem;
      }
    }