/* roulang page: index */
:root {
      --primary: #c86a7a;
      --primary-dark: #b44e60;
      --secondary: #8fa89b;
      --dark: #2d2426;
      --bg-warm: #fdfbf9;
      --card-shadow: 0 10px 30px -10px rgba(200, 106, 122, 0.08);
      --card-hover-shadow: 0 20px 40px -15px rgba(200, 106, 122, 0.16);
    }
    
    html {
      scroll-behavior: smooth;
    }
    
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-warm);
      color: #4a4042;
      line-height: 1.8;
    }

    .glass-nav {
      background: rgba(253, 251, 249, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(247, 222, 221, 0.4) 0%, rgba(253, 251, 249, 0) 70%);
    }

    .custom-shadow {
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .custom-shadow:hover {
      box-shadow: var(--card-hover-shadow);
      transform: translateY(-3px);
    }

    .dark-pattern {
      background-color: #2D2426;
      background-image: radial-gradient(#3d3235 1px, transparent 1px);
      background-size: 24px 24px;
    }

    .tab-btn.active {
      background-color: #c86a7a;
      color: #ffffff;
      border-color: #c86a7a;
    }