/* roulang page: index */
:root {
      --bg-dark: #0B0E14;
      --bg-midnight: #111927;
      --card-bg: #161F30;
      --primary-green: #00F298;
      --primary-cyan: #07C1FF;
      --text-silver: #94A3B8;
      --text-light: #F8FAFC;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-silver);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .brand-gradient-text {
      background: linear-gradient(135deg, #00F298 0%, #07C1FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .brand-gradient-bg {
      background: linear-gradient(135deg, #00F298 0%, #07C1FF 100%);
    }
    .card-border-glow {
      border: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-border-glow:hover {
      border-color: rgba(0, 242, 152, 0.5);
      transform: translateY(-4px);
      box-shadow: 0 15px 35px -5px rgba(0, 242, 152, 0.15);
    }
    .smooth-scroll {
      scroll-behavior: smooth;
    }