/* roulang page: index */
:root {
      --primary: #4F46E5;
      --primary-hover: #4338CA;
      --accent: #06B6D4;
      --accent-pink: #F43F5E;
      --bg-dark: #0B0F19;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      color: #334155;
      line-height: 1.75;
      letter-spacing: 0.01em;
      background-color: #ffffff;
      overflow-x: hidden;
    }
    .clip-slant {
      clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
    }
    .hero-glow {
      background: radial-gradient(circle at 60% 30%, rgba(79, 70, 229, 0.4) 0%, rgba(6, 182, 212, 0.15) 40%, transparent 70%);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 35px -10px rgba(79, 70, 229, 0.15);
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background-color: #cbd5e1;
      border-radius: 9999px;
    }