/* roulang page: index */
:root {
      --bg-main: #0B0F19;
      --bg-panel: #111827;
      --bg-card: #1F2937;
      --accent-mint: #10B981;
      --accent-cyan: #06B6D4;
      --text-primary: #FFFFFF;
      --text-secondary: #E5E7EB;
      --text-muted: #9CA3AF;
      --border-light: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-secondary);
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text-primary);
      line-height: 1.3;
    }
    .hero-bg-cover {
      background-image: linear-gradient(180deg, rgba(11, 15, 25, 0.82) 0%, #0B0F19 100%), url('/assets/images/eed0e4f73ba73dab.webp');
      background-size: cover;
      background-position: center;
    }
    .immersive-bg-cover {
      background-image: linear-gradient(90deg, rgba(11, 15, 25, 0.95) 0%, rgba(11, 15, 25, 0.75) 100%), url('/assets/images/320ede1c9abd753c.jpg');
      background-size: cover;
      background-position: center;
    }
    .glow-border {
      border: 1px solid var(--border-light);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glow-border:hover {
      border-color: rgba(16, 185, 129, 0.35);
      box-shadow: 0 0 25px rgba(16, 185, 129, 0.12);
    }
    .btn-mint {
      background: linear-gradient(135deg, #10B981 0%, #059669 100%);
      color: #FFFFFF;
      transition: all 0.2s ease;
    }
    .btn-mint:hover {
      filter: brightness(1.1);
      box-shadow: 0 0 18px rgba(16, 185, 129, 0.45);
    }
    .btn-mint:active {
      transform: scale(0.97);
    }
    .nav-blur {
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      background-color: rgba(11, 15, 25, 0.88);
      border-bottom: 1px solid var(--border-light);
    }