/* roulang page: index */
:root {
      --bg-dark: #080c14;
      --bg-card: #131e36;
      --border-glow: rgba(0, 255, 157, 0.2);
      --neon-green: #00ff9d;
      --electric-blue: #2979ff;
    }
    body {
      background-color: var(--bg-dark);
      color: #e2e8f0;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      overflow-x: hidden;
      line-height: 1.7;
    }
    .code-font {
      font-family: 'JetBrains Mono', Consolas, Monaco, monospace;
    }
    .glow-border {
      border: 1px solid rgba(41, 121, 255, 0.25);
      box-shadow: inset 0 0 15px rgba(0, 255, 157, 0.03), 0 4px 20px rgba(0, 0, 0, 0.5);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glow-border:hover {
      border-color: rgba(0, 255, 157, 0.5);
      box-shadow: inset 0 0 20px rgba(0, 255, 157, 0.08), 0 8px 30px rgba(0, 255, 157, 0.12);
      transform: translateY(-2px);
    }
    .cyber-btn {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.85rem 1.75rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      border-radius: 4px;
      transition: all 0.25s ease;
      cursor: pointer;
    }
    .cyber-btn-primary {
      background: #00ff9d;
      color: #080c14;
      border: 1px solid #00ff9d;
      box-shadow: 0 0 20px rgba(0, 255, 157, 0.35);
    }
    .cyber-btn-primary:hover {
      background: #1affad;
      transform: scale(1.02);
      box-shadow: 0 0 28px rgba(0, 255, 157, 0.55);
    }
    .cyber-btn-outline {
      background: rgba(41, 121, 255, 0.08);
      color: #60a5fa;
      border: 1px solid rgba(41, 121, 255, 0.5);
    }
    .cyber-btn-outline:hover {
      background: rgba(41, 121, 255, 0.2);
      border-color: #2979ff;
      color: #93c5fd;
    }
    .grid-lines {
      background-size: 40px 40px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    }
    .metric-value {
      font-variant-numeric: tabular-nums;
    }