/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --primary-deep: #1E3A5F;
      --accent-cyan: #00C9A7;
      --cta-amber: #F59E0B;
      --bg-light: #F8FAFC;
      --card-white: #FFFFFF;
      --text-body: #475569;
      --text-muted: #64748B;
      --border-light: #E2E8F0;
      --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
      --shadow-card-hover: 0 4px 16px rgba(0,0,0,0.08), 0 8px 24px rgba(0,0,0,0.06);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4 {
      margin: 0;
      font-weight: 600;
      color: var(--primary-deep);
      line-height: 1.3;
    }
    h1 { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.02em; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    p { margin: 0; color: var(--text-body); }
    a { text-decoration: none; color: inherit; transition: all 0.2s ease; }
    img { max-width: 100%; height: auto; display: block; }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    /* 导航栏联动 Hero 分屏布局 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(8px);
      box-shadow: 0 1px 4px rgba(0,0,0,0.02);
      z-index: 50;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(0,0,0,0.02);
    }
    .nav-inner {
      display: flex;
      width: 100%;
      height: 100%;
    }
    .nav-left {
      width: 40%;
      display: flex;
      align-items: center;
      padding-left: 2rem;
    }
    .nav-right {
      width: 60%;
      background: linear-gradient(105deg, #f1f5f9 0%, #e9f2fa 100%);
      display: flex;
      align-items: center;
      justify-content: flex-end;
      padding-right: 2rem;
      position: relative;
      overflow: hidden;
    }
    .nav-right::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.08;
      pointer-events: none;
    }
    .logo {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary-deep);
      letter-spacing: -0.5px;
      margin-right: 2.5rem;
    }
    .nav-links {
      display: flex;
      gap: 1.8rem;
      align-items: center;
    }
    .nav-links a {
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 0.25rem 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--accent-cyan);
      transition: width 0.2s ease;
    }
    .nav-links a:hover {
      color: var(--accent-cyan);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-right .search-icon {
      color: var(--primary-deep);
      font-size: 1.2rem;
      opacity: 0.7;
      transition: opacity 0.2s;
    }
    .nav-right .search-icon:hover {
      opacity: 1;
      color: var(--accent-cyan);
    }
    .hamburger {
      display: none;
      font-size: 1.5rem;
      background: none;
      border: none;
      color: var(--primary-deep);
      cursor: pointer;
    }
    .mobile-menu {
      position: fixed;
      top: 0;
      right: 0;
      width: 75%;
      max-width: 320px;
      height: 100vh;
      background: white;
      box-shadow: -8px 0 24px rgba(0,0,0,0.1);
      transform: translateX(100%);
      transition: transform 0.3s ease;
      z-index: 100;
      padding: 2rem;
      display: flex;
      flex-direction: column;
      gap: 2rem;
    }
    .mobile-menu.open {
      transform: translateX(0);
    }
    .overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.4);
      z-index: 99;
      display: none;
    }
    .overlay.show {
      display: block;
    }
    /* Hero 左文右图 */
    .hero-section {
      padding-top: 64px;
      min-height: 70vh;
      display: flex;
      align-items: center;
      background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 3rem;
    }
    .hero-text {
      flex: 1 1 55%;
    }
    .hero-image {
      flex: 1 1 45%;
      position: relative;
    }
    .hero-image img {
      border-radius: 24px;
      box-shadow: 0 20px 35px rgba(0,0,0,0.08);
      width: 100%;
      height: auto;
      object-fit: cover;
    }
    .btn-primary {
      background: var(--accent-cyan);
      color: white;
      font-weight: 600;
      padding: 0.875rem 2rem;
      border-radius: var(--radius-btn);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: all 0.2s ease;
      box-shadow: 0 4px 10px rgba(0,201,167,0.25);
      border: none;
      cursor: pointer;
      font-size: 1rem;
    }
    .btn-primary:hover {
      background: #00A88C;
      transform: translateY(-1px);
      box-shadow: 0 8px 18px rgba(0,201,167,0.35);
    }
    .btn-cta {
      background: var(--cta-amber);
      color: white;
      font-weight: 600;
      padding: 1rem 2.5rem;
      border-radius: var(--radius-btn);
      font-size: 1.125rem;
      box-shadow: 0 6px 18px rgba(245,158,11,0.3);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: all 0.2s;
      border: none;
      cursor: pointer;
    }
    .btn-cta:hover {
      background: #e08f0b;
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--primary-deep);
      color: var(--primary-deep);
      font-weight: 600;
      padding: 0.75rem 1.8rem;
      border-radius: var(--radius-btn);
      transition: all 0.2s;
    }
    .btn-outline:hover {
      background: var(--primary-deep);
      color: white;
    }
    .card {
      background: var(--card-white);
      border-radius: var(--radius-card);
      padding: 1.75rem;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: all 0.2s ease;
    }
    .card:hover {
      border-color: var(--accent-cyan);
      box-shadow: var(--shadow-card-hover);
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      background: rgba(0,201,167,0.1);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-cyan);
      font-size: 1.5rem;
    }
    .faq-item {
      border-bottom: 1px solid var(--border-light);
      padding: 1.2rem 0;
    }
    .faq-question {
      font-weight: 600;
      color: var(--primary-deep);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--text-body);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      margin-top: 0.8rem;
    }
    footer {
      background: #F1F5F9;
      color: var(--text-muted);
      padding: 3rem 0 1.5rem;
    }
    @media (max-width: 1023px) {
      .nav-left { width: 50%; }
      .nav-right { width: 50%; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .nav-left { width: auto; flex: 1; }
      .nav-right { display: none; }
      .hero-grid { flex-direction: column; text-align: center; }
      .hero-text, .hero-image { flex: unset; width: 100%; }
      h1 { font-size: 2rem; }
      .container { padding-left: 1rem; padding-right: 1rem; }
    }