/* roulang page: index */
:root {
      --primary: #0284c7;
      --primary-dark: #0f172a;
      --accent: #06b6d4;
      --success: #10b981;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border-subtle: rgba(226, 232, 240, 0.8);
      --shadow-soft: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.6;
      overflow-x: hidden;
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(11, 17, 32, 0.95), rgba(15, 23, 42, 0.88)), url('/assets/images/3f878da25fde3211.webp') center/cover no-repeat;
    }
    .blueprint-bg {
      background: linear-gradient(180deg, #0b1120 0%, #111827 100%);
    }
    .custom-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: var(--shadow-soft);
    }
    .custom-card:hover {
      transform: translateY(-4px);
      border-color: #38bdf8;
      box-shadow: 0 12px 28px -4px rgba(2, 132, 199, 0.12);
    }
    .tech-border-glow {
      position: relative;
    }
    .tech-border-glow::after {
      content: '';
      position: absolute;
      inset: -1px;
      border-radius: 13px;
      padding: 1px;
      background: linear-gradient(90deg, #0284c7, #06b6d4, transparent);
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #cbd5e1;
      border-radius: 4px;
    }