/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary-purple: #7C3AED;
      --primary-orange: #F97316;
      --deep-bg: #0B0418;
      --dark-panel: #1E0A2E;
      --card-bg: #FFFFFF;
      --text-dark: #1F2937;
      --text-light: #F1F5F9;
      --text-muted: #9CA3AF;
      --accent-green: #10B981;
      --accent-red: #EF4444;
      --border-light: rgba(255,255,255,0.12);
      --shadow-card: 0 20px 35px -10px rgba(0,0,0,0.15);
      --shadow-hover: 0 30px 45px -12px rgba(0,0,0,0.25);
      --radius-xl: 1.25rem;
      --radius-2xl: 1.75rem;
      --radius-3xl: 2.25rem;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
      background-color: #F8F9FA;
      color: var(--text-dark);
      line-height: 1.6;
      margin: 0;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    
    .brand-gradient-text {
      background: linear-gradient(135deg, #C084FC 0%, #F97316 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    
    .brand-bg-gradient {
      background: linear-gradient(135deg, #7C3AED 0%, #F97316 100%);
    }
    
    .deep-bg-gradient {
      background: radial-gradient(circle at 30% 10%, #2D1B4E 0%, #0B0418 75%);
    }
    
    .glass-panel {
      background: rgba(15, 15, 25, 0.7);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,0.1);
    }
    
    .data-badge {
      background: linear-gradient(135deg, rgba(124,58,237,0.25), rgba(249,115,22,0.2));
      border-radius: 2rem;
      padding: 0.25rem 0.9rem;
      font-size: 0.8rem;
      font-weight: 600;
      color: #E9D5FF;
      letter-spacing: 0.02em;
      backdrop-filter: blur(4px);
      border: 1px solid rgba(255,255,255,0.15);
    }
    
    .card-hover {
      transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
    }
    .card-hover:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    
    .nav-icon-btn {
      transition: 0.2s;
      background: rgba(255,255,255,0.05);
      border-radius: 2.5rem;
      padding: 0.4rem 1rem;
      color: #D1D5DB;
      font-size: 0.9rem;
      font-weight: 500;
    }
    .nav-icon-btn:hover {
      background: rgba(255,255,255,0.15);
      color: white;
    }
    
    .accent-number {
      font-feature-settings: 'tnum';
      font-variant-numeric: tabular-nums;
      font-weight: 800;
    }
    
    .hero-card-stack {
      position: relative;
      width: 100%;
      max-width: 480px;
      margin: 0 auto;
    }
    
    .stack-card {
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: var(--radius-2xl);
      padding: 1.25rem;
      box-shadow: 0 15px 30px -8px rgba(0,0,0,0.5);
      transition: all 0.3s;
    }
    
    @media (max-width: 768px) {
      .hero-card-stack {
        max-width: 320px;
        margin-top: 2rem;
      }
      .stack-card {
        padding: 1rem;
      }
    }
    
    details summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 1.1rem;
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .faq-arrow {
      transition: transform 0.3s ease;
    }
    details[open] .faq-arrow {
      transform: rotate(180deg);
    }
    
    .form-input {
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: 1rem;
      padding: 0.9rem 1.2rem;
      color: white;
      width: 100%;
      transition: 0.2s;
    }
    .form-input:focus {
      outline: none;
      border-color: #F97316;
      background: rgba(255,255,255,0.15);
      box-shadow: 0 0 0 3px rgba(249,115,22,0.3);
    }
    
    footer a {
      transition: color 0.2s;
    }
    footer a:hover {
      color: #F97316;
    }