/* roulang page: index */
:root {
      --primary: #10B981;
      --primary-hover: #059669;
      --secondary: #6366F1;
      --bg-main: #F8FAFC;
      --bg-dark: #0F172A;
      --text-main: #0F172A;
      --text-muted: #334155;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.75;
      letter-spacing: 0.01em;
      margin: 0;
      padding: 0;
    }
    .custom-container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .hero-bg {
      background-image: linear-gradient(to bottom, rgba(15, 23, 42, 0.88), rgba(9, 13, 22, 0.94)), url('/assets/images/c3481b5465adfbf2.png');
      background-size: cover;
      background-position: center;
    }
    .terminal-shadow {
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.08);
    }