/* roulang page: index */
:root {
      --primary: #00E599;
      --primary-hover: #00B377;
      --bg-dark: #0B0F19;
      --card-dark: #131B2E;
      --text-main: #F8FAFC;
      --text-sub: #94A3B8;
      --border-color: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .custom-gradient-overlay {
      background: linear-gradient(180deg, rgba(11, 15, 25, 0.2) 0%, rgba(11, 15, 25, 0.95) 85%, #0B0F19 100%);
    }
    .tech-card {
      background-color: var(--card-dark);
      border: 1px solid var(--border-color);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .tech-card:hover {
      border-color: rgba(0, 229, 153, 0.4);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -10px rgba(0, 229, 153, 0.15);
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(0, 229, 153, 0.15) 0%, rgba(11, 15, 25, 0) 70%);
    }
    .hide-scrollbar::-webkit-scrollbar {
      display: none;
    }
    .hide-scrollbar {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }