/* roulang page: index */
:root {
      --primary-purple: #5B2C8E;
      --primary-light: #7B3FBE;
      --accent-cyan: #00E5A0;
      --accent-cyan-deep: #00C896;
      --bg-warm: #FAF8FC;
      --card-white: #FFFFFF;
      --dark-charcoal: #1E1528;
      --text-body: #3A3640;
      --text-muted: #8A8490;
      --border-light: #EEEAF3;
      --amber-gold: #F0A500;
      --shadow-sm: 0 4px 20px rgba(30,21,40,0.04);
      --shadow-md: 0 12px 32px rgba(30,21,40,0.08);
      --shadow-lg: 0 24px 48px rgba(30,21,40,0.12);
      --radius-card: 20px;
      --radius-btn: 999px;
      --radius-nav: 16px;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4 {
      color: var(--dark-charcoal);
      letter-spacing: -0.02em;
    }
    .text-gradient {
      background: linear-gradient(135deg, #7B3FBE 0%, #00E5A0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .bg-gradient-btn {
      background: linear-gradient(135deg, #7B3FBE 0%, #00C896 100%);
    }
    .border-purple-soft {
      border-color: #EEEAF3;
    }
    .hover-lift {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .nav-capsule {
      background-color: #F3EDFA;
      border-radius: 10px;
      transition: all 0.25s ease;
    }
    .nav-capsule:hover {
      background-color: #7B3FBE;
      color: white;
      transform: translateY(-2px);
    }
    .nav-capsule:hover span {
      color: white;
    }
    .accordion-content {
      display: none;
    }
    .accordion-item.active .accordion-content {
      display: block;
    }
    .accordion-item.active .accordion-icon {
      transform: rotate(45deg);
      color: #7B3FBE;
    }
    .accordion-icon {
      transition: transform 0.3s ease, color 0.3s;
      color: #00E5A0;
    }
    .count-up {
      font-variant-numeric: tabular-nums;
    }
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(24px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .animate-stagger {
      animation: fadeInUp 0.6s ease forwards;
      opacity: 0;
    }
    .delay-1 { animation-delay: 0.2s; }
    .delay-2 { animation-delay: 0.4s; }
    .delay-3 { animation-delay: 0.6s; }
    @media (max-width: 768px) {
      .mobile-menu {
        display: none;
      }
      .mobile-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 20px;
        right: 20px;
        background: white;
        border-radius: 24px;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        z-index: 50;
      }
    }
    input:focus, textarea:focus {
      outline: none;
      border-color: #7B3FBE;
      background-color: white;
    }
    .footer-link {
      transition: color 0.2s;
    }
    .footer-link:hover {
      color: #7B3FBE;
    }