/* roulang page: index */
:root {
      --primary: #4F46E5;
      --secondary: #7C3AED;
      --accent: #06B6D4;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 27, 75, 0.88) 100%), url('/assets/images/d58980cc708ffa4e.png') center/cover no-repeat;
    }
    .dark-section-bg {
      background: linear-gradient(180deg, #0F172A 0%, #1E1B4B 100%);
    }
    .glass-card {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }
    .glass-card-dark {
      background: rgba(30, 41, 59, 0.7);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }