/* roulang page: index */
:root {
            --primary: #92400e;
            --primary-dark: #78350f;
            --secondary: #d97706;
            --surface: #ffffff;
            --bg-neutral: #f8fafc;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --border: #e2e8f0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: var(--bg-neutral);
            scroll-behavior: smooth;
        }
        .header-shadow {
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        .card-hover {
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.12);
        }

/* roulang page: category2 */
:root {
      --primary: #92400e;
      --primary-dark: #78350f;
      --secondary: #d97706;
      --surface: #ffffff;
      --bg-neutral: #f8fafc;
      --text-dark: #0f172a;
      --text-muted: #475569;
      --border: #e2e8f0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-dark);
      background-color: var(--bg-neutral);
      scroll-behavior: smooth;
    }
    .header-shadow {
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }
    .card-hover {
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.12);
    }
    .tag-badge {
      display: inline-flex;
      align-items: center;
      padding: 0.2rem 0.65rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
    }
    .metric-box {
      border-left: 3px solid var(--primary);
      padding-left: 1rem;
    }

/* roulang page: category4 */
:root {
      --primary: #92400e;
      --primary-dark: #78350f;
      --secondary: #d97706;
      --surface: #ffffff;
      --bg-neutral: #f8fafc;
      --text-dark: #0f172a;
      --text-muted: #475569;
      --border: #e2e8f0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-dark);
      background-color: var(--bg-neutral);
      scroll-behavior: smooth;
    }
    .header-shadow {
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }
    .card-hover {
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.12);
    }
    .hero-angled {
      clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
    }
    @media (max-width: 768px) {
      .hero-angled {
        clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
      }
    }