/* roulang page: index */
:root {
      --primary: #00FF9D;
      --primary-hover: #00d684;
      --secondary: #6E44FF;
      --bg-dark: #0A0D14;
      --bg-card: #121722;
      --bg-surface: #182030;
      --text-main: #F0F4FC;
      --text-muted: #8C9BB5;
      --border-color: rgba(0, 255, 157, 0.15);
    }
    html {
      scroll-behavior: smooth;
      font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      overflow-x: hidden;
    }
    .text-glow {
      text-shadow: 0 0 15px rgba(0, 255, 157, 0.4);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 255, 157, 0.4);
      box-shadow: 0 12px 30px rgba(0, 255, 157, 0.08);
    }
    .btn-glow {
      box-shadow: 0 0 20px rgba(0, 255, 157, 0.3);
      transition: all 0.3s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(0, 255, 157, 0.6);
      transform: translateY(-1px);
    }
    .gradient-border {
      position: relative;
      border-radius: 0.75rem;
      background: linear-gradient(135deg, rgba(0,255,157,0.2) 0%, rgba(110,68,255,0.2) 100%);
      padding: 1px;
    }
    .gradient-border-inner {
      background: var(--bg-surface);
      border-radius: calc(0.75rem - 1px);
    }