/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --deep-space: #0A0E17;
      --card-bg: #141A24;
      --light-card: #F4F6FA;
      --primary-orange: #E94E1B;
      --primary-orange-hover: #F0622C;
      --accent-cyan: #00C2BA;
      --text-white: #FFFFFF;
      --text-body: #B0B8C5;
      --text-muted: #6B7280;
      --border-subtle: rgba(255,255,255,0.08);
      --border-light: rgba(255,255,255,0.15);
      --shadow-card: 0 0 0 1px rgba(255,255,255,0.08), 0 4px 24px rgba(0,0,0,0.4);
      --radius-lg: 12px;
      --radius-md: 8px;
      --radius-sm: 6px;
      --font-mono: 'Inter', 'SF Mono', 'Menlo', monospace;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      background-color: var(--deep-space);
      color: var(--text-body);
      line-height: 1.6;
      margin: 0;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航样式 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      z-index: 50;
      transition: background 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 32px;
      background: transparent;
    }
    .navbar.scrolled {
      background: rgba(10, 14, 23, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: 0 1px 0 0 rgba(255,255,255,0.06);
    }
    .logo-text {
      font-weight: 800;
      font-size: 1.5rem;
      letter-spacing: -0.5px;
      display: flex;
      align-items: baseline;
      color: white;
    }
    .logo-text span:last-child {
      color: var(--primary-orange);
      margin-left: 2px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      font-weight: 500;
      color: var(--text-body);
    }
    .nav-links a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
      font-size: 0.95rem;
    }
    .nav-links a:hover {
      color: white;
    }
    .search-box {
      background: rgba(255,255,255,0.08);
      border: 1px solid transparent;
      border-radius: 24px;
      padding: 8px 16px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-muted);
      transition: border 0.2s, background 0.2s;
    }
    .search-box i {
      font-size: 0.9rem;
    }
    .search-box input {
      background: transparent;
      border: none;
      outline: none;
      color: white;
      font-size: 0.85rem;
      width: 140px;
    }
    .search-box input::placeholder {
      color: var(--text-muted);
    }
    .search-box:focus-within {
      border-color: var(--accent-cyan);
      background: rgba(255,255,255,0.12);
    }
    .btn-primary {
      background: var(--primary-orange);
      color: white;
      border: none;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      cursor: pointer;
      transition: background 0.25s ease, box-shadow 0.25s ease;
      letter-spacing: 0.3px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }
    .btn-primary:hover {
      background: var(--primary-orange-hover);
      box-shadow: 0 0 18px rgba(233,78,27,0.5);
    }
    .btn-secondary {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.3);
      color: white;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 500;
      cursor: pointer;
      transition: border 0.2s, background 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-secondary:hover {
      border-color: white;
      background: rgba(255,255,255,0.08);
    }
    .text-link {
      color: var(--accent-cyan);
      text-decoration: none;
      font-weight: 500;
      transition: all 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .text-link:hover {
      text-decoration: underline;
      transform: translateX(4px);
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: white;
      cursor: pointer;
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      width: 100%;
      background: rgba(10, 14, 23, 0.96);
      backdrop-filter: blur(20px);
      flex-direction: column;
      padding: 24px;
      gap: 20px;
      z-index: 40;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .mobile-menu a {
      color: var(--text-body);
      font-size: 1.2rem;
      font-weight: 500;
      text-decoration: none;
    }
    /* Hero 光带动画 */
    @keyframes flowStrip {
      0% { background-position: 0% 50%; }
      100% { background-position: 100% 50%; }
    }
    .hero-glow-strip {
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--primary-orange), transparent);
      background-size: 200% 100%;
      animation: flowStrip 3s linear infinite;
      opacity: 0.5;
    }
    /* 卡片差异化 */
    .card-dark {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
    }
    .card-light {
      background: var(--light-card);
      border-radius: var(--radius-lg);
      padding: 32px;
      color: #1f2937;
      box-shadow: 0 8px 20px rgba(0,0,0,0.05);
    }
    .card-data {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 28px;
      border-left: 4px solid var(--primary-orange);
    }
    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 20px 0;
      cursor: pointer;
    }
    .faq-question {
      display: flex;
      align-items: center;
      font-weight: 600;
      color: white;
      font-size: 1.1rem;
      gap: 16px;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      color: var(--text-body);
      padding-left: 36px;
      background: transparent;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-top: 12px;
      padding-bottom: 8px;
      background: #1A202C;
      margin-top: 8px;
      border-radius: 0 4px 4px 0;
      border-left: 3px solid var(--primary-orange);
    }
    /* 响应式 */
    @media (max-width: 1024px) {
      .nav-links, .search-box, .navbar .btn-primary {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .mobile-menu.show {
        display: flex;
      }
      .hero-container {
        flex-direction: column;
        text-align: center;
      }
      .hero-text {
        width: 100%;
      }
      .hero-image {
        width: 100%;
        margin-top: 40px;
      }
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }
      .grid-cols-3, .grid-cols-2 {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 520px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }