/* roulang page: index */
:root {
      --primary: #0E6E55;
      --primary-dark: #0B2824;
      --primary-light: #158f70;
      --primary-subtle: #E8F5F1;
      --secondary: #1E3A4C;
      --accent: #D97706;
      --accent-hover: #B45309;
      --bg-page: #F8FAFA;
      --surface: #FFFFFF;
      --surface-alt: #F1F5F7;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border: #E2E8F0;
      --border-focus: #0E6E55;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --radius-xl: 16px;
      --shadow-sm: 0 1px 3px 0 rgba(14, 110, 85, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.03);
      --shadow-md: 0 4px 6px -1px rgba(14, 110, 85, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 10px 20px -3px rgba(14, 110, 85, 0.12), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
      --shadow-xl: 0 20px 25px -5px rgba(11, 40, 36, 0.2), 0 8px 10px -6px rgba(11, 40, 36, 0.1);
      --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-page);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, background-color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, textarea, select {
      font: inherit;
      outline: none;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    @media (max-width: 768px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }
    .top-bar {
      background-color: var(--secondary);
      color: #CBD5E1;
      font-size: 12px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .top-bar-meta {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .top-bar-badge {
      background: rgba(14, 110, 85, 0.3);
      color: #34D399;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 500;
    }
    .main-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      border-bottom: 1px solid var(--border);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
    }
    .brand-icon {
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #fff;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--secondary);
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--primary);
      transition: width 0.25s ease;
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 6px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      text-align: center;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
    }
    .btn-primary:hover {
      background-color: var(--primary-light);
      box-shadow: 0 4px 12px rgba(14, 110, 85, 0.25);
      transform: translateY(-1px);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #ffffff;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--border);
      background-color: var(--surface);
      color: var(--secondary);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-subtle);
    }
    .btn-outline-white {
      border-color: rgba(255, 255, 255, 0.3);
      background-color: transparent;
      color: #ffffff;
    }
    .btn-outline-white:hover {
      border-color: #ffffff;
      background-color: rgba(255, 255, 255, 0.1);
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--secondary);
      cursor: pointer;
    }
    @media (max-width: 992px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        gap: 16px;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .nav-actions .btn-primary {
        display: none;
      }
    }
    .section {
      padding: 92px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--surface);
    }
    .section-tint {
      background-color: #F1F6F4;
    }
    .section-dark {
      background-color: var(--primary-dark);
      color: #F1F5F9;
    }
    .section-header {
      margin-bottom: 56px;
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background: var(--primary-subtle);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      border-radius: 9999px;
      margin-bottom: 14px;
      border: 1px solid rgba(14, 110, 85, 0.15);
    }
    .section-dark .section-badge {
      background: rgba(14, 110, 85, 0.3);
      color: #34D399;
      border-color: rgba(52, 211, 153, 0.3);
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--secondary);
      line-height: 1.3;
      letter-spacing: -0.01em;
      margin-bottom: 16px;
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }
    .hero-search-center {
      position: relative;
      background-color: var(--secondary);
      background-image: linear-gradient(135deg, rgba(14, 110, 85, 0.92) 0%, rgba(11, 40, 36, 0.96) 100%), url('/assets/images/b5248530065662b0.webp');
      background-size: cover;
      background-position: center;
      padding: 110px 0 100px;
      color: #ffffff;
      text-align: center;
    }
    .hero-badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 500;
      margin-bottom: 24px;
      backdrop-filter: blur(4px);
    }
    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      max-width: 900px;
      margin: 0 auto 20px;
    }
    .hero-summary {
      font-size: 16px;
      line-height: 1.8;
      max-width: 820px;
      margin: 0 auto 36px;
      color: #E2E8F0;
    }
    .search-mock-bar {
      max-width: 660px;
      margin: 0 auto 24px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 6px 8px 6px 20px;
      display: flex;
      align-items: center;
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
    }
    .search-mock-bar input {
      flex: 1;
      border: none;
      font-size: 15px;
      color: var(--text-main);
      background: transparent;
      padding-right: 12px;
    }
    .search-mock-bar input::placeholder {
      color: var(--text-light);
    }
    .chips-group {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 36px;
    }
    .chip {
      padding: 4px 12px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 20px;
      font-size: 13px;
      color: #E2E8F0;
      transition: all 0.2s ease;
    }
    .chip:hover {
      background: rgba(255, 255, 255, 0.25);
      color: #ffffff;
    }
    .hero-action-buttons {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .card-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    @media (max-width: 992px) {
      .card-grid-3, .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 640px) {
      .card-grid-3, .card-grid-2, .card-grid-4 {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 28px;
      }
      .section {
        padding: 60px 0;
      }
      .section-title {
        font-size: 24px;
      }
    }
    .category-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .category-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(14, 110, 85, 0.3);
    }
    .cat-icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: var(--primary-subtle);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
    }
    .category-card h3 {
      font-size: 19px;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 10px;
    }
    .category-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex: 1;
    }
    .cat-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .cat-tag {
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 4px;
      background: #F1F5F9;
      color: #64748B;
    }
    .split-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    @media (max-width: 868px) {
      .split-layout {
        grid-template-columns: 1fr;
      }
    }
    .img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .img-box:hover img {
      transform: scale(1.03);
    }
    .feature-point {
      margin-bottom: 24px;
      padding-left: 20px;
      border-left: 3px solid var(--primary);
    }
    .feature-point h4 {
      font-size: 17px;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 6px;
    }
    .feature-point p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .stats-bar {
      background: linear-gradient(135deg, #0B2824 0%, #15453E 100%);
      color: #ffffff;
      padding: 56px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stat-item {
      text-align: center;
      padding: 12px;
    }
    .stat-num {
      font-size: 42px;
      font-weight: 700;
      color: var(--accent);
      line-height: 1.1;
      margin-bottom: 6px;
      font-variant-numeric: tabular-nums;
    }
    .stat-label {
      font-size: 15px;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 4px;
    }
    .stat-desc {
      font-size: 12px;
      color: #94A3B8;
    }
    .review-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex: 1;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border);
      padding-top: 14px;
    }
    .review-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-subtle);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }
    .review-meta h4 {
      font-size: 14px;
      font-weight: 600;
      color: var(--secondary);
    }
    .review-meta span {
      font-size: 12px;
      color: #64748B;
    }
    .pricing-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      box-shadow: var(--shadow-sm);
      position: relative;
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .pricing-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: rgba(14, 110, 85, 0.4);
    }
    .pricing-card.popular {
      border: 2px solid var(--primary);
      transform: scale(1.02);
      box-shadow: var(--shadow-md);
    }
    .pricing-card.popular:hover {
      transform: scale(1.02) translateY(-4px);
    }
    .popular-tag {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #ffffff;
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .pricing-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
    }
    .pricing-target {
      font-size: 13px;
      color: #64748B;
      margin-bottom: 20px;
      min-height: 38px;
    }
    .pricing-price {
      font-size: 32px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 24px;
    }
    .pricing-price span {
      font-size: 14px;
      font-weight: 400;
      color: #64748B;
    }
    .pricing-list {
      list-style: none;
      margin-bottom: 30px;
      flex: 1;
    }
    .pricing-list li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-list li::before {
      content: '✓';
      color: var(--primary);
      font-weight: 700;
    }
    .step-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    @media (max-width: 868px) {
      .step-flow {
        grid-template-columns: 1fr;
      }
    }
    .step-box {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-number {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      margin-bottom: 14px;
    }
    .step-box h4 {
      font-size: 16px;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 8px;
    }
    .step-box p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .news-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-thumb {
      height: 180px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .news-date {
      font-size: 12px;
      color: #64748B;
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex: 1;
    }
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-item summary {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--secondary);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: '+';
      font-size: 20px;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.2s ease;
    }
    .faq-item[open] summary::after {
      transform: rotate(45deg);
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid var(--border);
      padding-top: 16px;
    }
    .contact-card-box {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      padding: 48px;
      box-shadow: var(--shadow-lg);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      font-size: 14px;
      color: var(--text-main);
      background-color: #FAFAFA;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .form-control:focus {
      background-color: #ffffff;
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(14, 110, 85, 0.12);
    }
    .site-footer {
      background-color: var(--primary-dark);
      color: #94A3B8;
      font-size: 13px;
      padding: 64px 0 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    @media (max-width: 868px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .contact-card-box {
        padding: 24px;
      }
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12px;
    }
    .toast-alert {
      display: none;
      padding: 12px;
      background: var(--primary-subtle);
      color: var(--primary);
      border-radius: var(--radius-md);
      font-size: 13px;
      font-weight: 500;
      margin-top: 14px;
      text-align: center;
    }