/* roulang page: index */
:root {
      --primary: #F95721;
      --primary-hover: #E04612;
      --secondary: #11161F;
      --accent: #CCFF00;
      --bg-light: #F6F8FA;
      --text-main: #1E2530;
      --text-muted: #5F6B7C;
      --border-color: rgba(0, 0, 0, 0.08);
      --radius: 12px;
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
      --shadow-card: 0 10px 30px -10px rgba(249, 87, 33, 0.12);
    }
    
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    
    body {
      background-color: #FFFFFF;
      color: var(--text-main);
      line-height: 1.75;
      overflow-x: hidden;
    }
    
    .hero-cinematic {
      background: linear-gradient(180deg, rgba(13, 17, 23, 0.82) 0%, rgba(13, 17, 23, 0.94) 100%),
                  url('/assets/images/2ebf072b12e10dab.jpg') center/cover no-repeat;
    }
    
    .tech-grid-pattern {
      background-image: radial-gradient(rgba(204, 255, 0, 0.12) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    
    .app-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease-out;
    }
    
    .app-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 14px 34px -8px rgba(0, 0, 0, 0.1);
      border-color: rgba(249, 87, 33, 0.3);
    }
    
    .btn-brand {
      background-color: var(--primary);
      color: #FFFFFF;
      transition: all 0.2s ease;
    }
    
    .btn-brand:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 8px 20px rgba(249, 87, 33, 0.35);
      transform: translateY(-2px);
    }
    
    .badge-pill {
      display: inline-flex;
      align-items: center;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.05em;
    }