/* roulang page: index */
:root {
      --primary: #6D28D9;
      --primary-light: #7C3AED;
      --accent-cyan: #06B6D4;
      --accent-orange: #F97316;
      --bg-dark: #0D0F14;
      --bg-dark-surface: #161922;
      --bg-light: #F6F7F9;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --font-mono: "JetBrains Mono", "Roboto Mono", monospace;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      overflow-x: hidden;
    }
    .font-mono-val {
      font-family: var(--font-mono);
    }
    .timeline-ruler {
      background-image: repeating-linear-gradient(to right, #334155 0, #334155 1px, transparent 1px, transparent 20px),
                        repeating-linear-gradient(to right, #475569 0, #475569 1px, transparent 1px, transparent 100px);
      height: 12px;
    }
    .card-hover-effect {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover-effect:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -6px rgba(109, 40, 217, 0.15);
      border-color: var(--primary-light);
    }
    .dark-card-hover:hover {
      transform: translateY(-4px);
      border-color: rgba(6, 182, 212, 0.5);
      box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.15);
    }