/* roulang page: index */
:root {
      --primary: #0F172A;
      --secondary: #1E293B;
      --accent: #10B981;
      --accent-cyan: #06B6D4;
      --bg-base: #F8FAFC;
      --bg-alt: #F1F5F9;
      --text-main: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      color: var(--text-main);
      background-color: var(--bg-base);
      -webkit-font-smoothing: antialiased;
    }
    .code-editor-bg {
      background: #080C14;
      border: 1px solid #1E293B;
    }
    .grid-pattern {
      background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    }
    .accordion-content.open {
      max-height: 500px;
      transition: max-height 0.4s ease-in-out;
    }