/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --neon: #8B5CF6;
      --neon-light: #A78BFA;
      --neon-dark: #7C3AED;
      --accent: #06D6A0;
      --dark: #0A0A0F;
      --dark-card: #1A1A24;
      --dark-sec: #13131A;
      --gray-main: #D1D5DB;
      --gray-soft: #9CA3AF;
      --gray-muted: #6B7280;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
      background-color: var(--dark);
      color: var(--gray-main);
      line-height: 1.6;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    /* 导航栏 */
    .navbar {
      background: rgba(10,10,15,0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(139, 92, 246, 0.5);
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 50;
    }
    .nav-link {
      color: #D1D5DB;
      transition: all 0.2s ease;
      position: relative;
      padding: 0.5rem 0.25rem;
    }
    .nav-link:hover {
      color: white;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--neon);
      transition: width 0.2s ease;
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .nav-link.active {
      color: var(--neon);
      text-shadow: 0 0 8px rgba(139, 92, 246, 0.6);
    }
    .btn-primary {
      background: var(--neon);
      color: white;
      border-radius: 8px;
      padding: 10px 24px;
      font-weight: 600;
      transition: all 0.2s ease;
      display: inline-block;
      text-align: center;
    }
    .btn-primary:hover {
      background: var(--neon-dark);
      box-shadow: 0 0 24px rgba(139, 92, 246, 0.7);
      transform: scale(1.02);
    }
    .btn-primary:active {
      transform: scale(0.97);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--neon);
      color: var(--neon);
      border-radius: 8px;
      padding: 10px 24px;
      font-weight: 600;
      transition: all 0.2s ease;
    }
    .btn-outline:hover {
      background: rgba(139, 92, 246, 0.1);
      border-color: var(--neon-light);
      color: var(--neon-light);
    }
    .btn-ghost {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.2);
      color: white;
      border-radius: 8px;
      padding: 10px 24px;
      font-weight: 600;
      transition: all 0.2s ease;
    }
    .btn-ghost:hover {
      border-color: var(--neon);
      color: var(--neon);
    }
    /* 区块标题 */
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      margin-bottom: 1rem;
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 0;
      width: 60px;
      height: 3px;
      background: var(--neon);
      border-radius: 2px;
    }
    .text-accent-glow {
      color: var(--accent);
      text-shadow: 0 0 8px rgba(6,214,160,0.5);
    }
    .card-hover {
      transition: all 0.3s ease;
    }
    .card-hover:hover {
      transform: translateY(-6px);
      box-shadow: 0 0 24px rgba(139, 92, 246, 0.35), 0 8px 32px rgba(0,0,0,0.6);
      border-color: rgba(139, 92, 246, 0.4);
    }
    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(139, 92, 246, 0.15);
    }
    .faq-question {
      background: #1A1A24;
      padding: 18px 24px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: #22222e;
    }
    .faq-answer {
      background: #13131A;
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      color: #D1D5DB;
    }
    .faq-item.active .faq-answer {
      padding: 18px 24px;
      max-height: 200px;
    }
    /* 移动端菜单 */
    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        flex-direction: column;
        background: #0A0A0F;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        border-bottom: 1px solid rgba(139,92,246,0.4);
        padding: 1rem 1.5rem;
      }
      .nav-menu.open {
        display: flex;
      }
    }