/* roulang page: index */
:root {
      --bg-main: #0B0D13;
      --bg-card: #131722;
      --bg-card-hover: #1A2030;
      --primary: #00FF9D;
      --primary-glow: rgba(0, 255, 157, 0.25);
      --secondary: #7B2CBF;
      --text-main: #F3F4F6;
      --text-muted: #9CA3AF;
      --text-dim: #4B5563;
      --border: rgba(255, 255, 255, 0.08);
      --border-highlight: rgba(0, 255, 157, 0.3);
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
      line-height: 1.6;
    }
    .neon-text-glow {
      text-shadow: 0 0 15px rgba(0, 255, 157, 0.4);
    }
    .neon-box-glow {
      box-shadow: 0 0 30px rgba(0, 255, 157, 0.15);
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(11, 13, 19, 0.95) 0%, rgba(19, 23, 34, 0.85) 60%, rgba(123, 44, 191, 0.2) 100%);
    }
    .feature-border {
      border: 1px solid var(--border);
      position: relative;
    }
    .feature-border:hover {
      border-color: var(--primary);
    }
    .slant-hero-img {
      clip-path: polygon(6% 0, 100% 0%, 94% 100%, 0% 100%);
    }
    @media (max-width: 1024px) {
      .slant-hero-img {
        clip-path: none;
      }
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out, opacity 0.3s ease;
      opacity: 0;
    }
    .faq-item.active .faq-content {
      max-height: 250px;
      opacity: 1;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .section-divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    }
    .bg-grid-pattern {
      background-size: 30px 30px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    }