/* roulang page: index */
:root {
      --primary-color: #ea580c;
      --primary-hover: #c2410c;
      --bg-dark: #0f172a;
      --bg-deep: #0b0f19;
      --bg-light: #f8fafc;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
    }
    body {
      color: var(--text-main);
      background-color: var(--bg-light);
      -webkit-font-smoothing: antialiased;
      line-height: 1.7;
    }
    h1, h2, h3, h4, h5, h6 {
      line-height: 1.25;
      font-weight: 700;
      letter-spacing: -0.015em;
    }
    .metric-value {
      font-feature-settings: "tnum";
      font-variant-numeric: tabular-nums;
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.78) 50%, rgba(234, 88, 12, 0.55) 100%);
    }
    .nav-blur {
      backdrop-filter: blur(12px);
      background-color: rgba(255, 255, 255, 0.96);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .subtle-grid {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.45) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.45) 1px, transparent 1px);
    }