/* roulang page: index */
:root {
      --primary: #0F2B48;
      --primary-light: #1A3E66;
      --accent: #E85D04;
      --accent-hover: #D9480F;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0A192F;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -1px rgba(0,0,0,0.04);
      --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.05);
      --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.75;
      letter-spacing: 0.02em;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部政务规范式双层导航 */
    .top-bar {
      background-color: var(--primary);
      color: #94A3B8;
      font-size: 0.85rem;
      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-tags {
      display: flex;
      gap: 16px;
    }
    .badge-iso {
      background: rgba(255,255,255,0.12);
      padding: 2px 8px;
      border-radius: 4px;
      color: #E2E8F0;
    }

    .site-header {
      background-color: var(--bg-white);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-logo .symbol {
      background: var(--primary);
      color: #fff;
      width: 34px;
      height: 34px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 6px;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .main-nav ul {
      display: flex;
      list-style: none;
      gap: 24px;
      align-items: center;
    }
    .main-nav a {
      font-size: 0.95rem;
      font-weight: 500;
      color: #334155;
    }
    .main-nav a:hover {
      color: var(--accent);
    }
    .header-action .btn-primary {
      padding: 10px 20px;
      background: var(--accent);
      color: #fff;
      font-weight: 600;
      border-radius: var(--radius-sm);
      display: inline-block;
      box-shadow: 0 2px 4px rgba(232,93,4,0.25);
    }
    .header-action .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
    }

    /* 板块通用布局 */
    .section-wrap {
      padding: 80px 0;
    }
    .section-title-wrap {
      margin-bottom: 48px;
      max-width: 780px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 10px;
      letter-spacing: 0.05em;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. 首屏提问获客型 Hero */
    .hero-section {
      background: linear-gradient(135deg, rgba(15,43,72,0.92) 0%, rgba(10,25,47,0.96) 100%),
                  url('/assets/images/b41240e4877e3081.jpg') center/cover no-repeat;
      color: #FFFFFF;
      padding: 85px 0 95px 0;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.25fr 0.95fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.6rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 18px;
      color: #FFFFFF;
    }
    .hero-lead {
      font-size: 1.05rem;
      color: #CBD5E1;
      margin-bottom: 30px;
      line-height: 1.8;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 32px;
    }
    .hero-badge-item {
      background: rgba(255,255,255,0.1);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: var(--radius-sm);
      padding: 6px 14px;
      font-size: 0.85rem;
      color: #E2E8F0;
    }
    .hero-form-card {
      background: #FFFFFF;
      color: var(--text-main);
      padding: 32px;
      border-radius: var(--radius-md);
      box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3);
      border: 1px solid rgba(255,255,255,0.1);
    }
    .hero-form-card h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 8px;
      font-weight: 700;
    }
    .hero-form-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .form-group {
      margin-bottom: 14px;
    }
    .form-group label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: #334155;
    }
    .form-control {
      width: 100%;
      padding: 10px 12px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background-color: #F8FAFC;
      color: #1E293B;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #FFF;
    }
    .btn-submit {
      width: 100%;
      background: var(--accent);
      color: #FFFFFF;
      font-weight: 700;
      padding: 12px;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 6px rgba(232,93,4,0.2);
      transition: all 0.2s ease;
      margin-top: 6px;
    }
    .btn-submit:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
    }

    /* 2. 全球覆盖与基础设施 */
    .bg-white-panel {
      background-color: var(--bg-white);
    }
    .global-matrix-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .region-tags-cluster {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .region-box {
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-sm);
      background: #F8FAFC;
    }
    .region-box h4 {
      font-size: 1rem;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .region-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 3. 核心优势六宫格 */
    .grid-three-col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .advantage-card {
      background: var(--bg-white);
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .advantage-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .advantage-number {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .advantage-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .advantage-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 4. 品类定制出海解决方案大卡 */
    .solution-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .solution-card-img {
      height: 190px;
      width: 100%;
      object-fit: cover;
    }
    .solution-card-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .solution-card-body h3 {
      font-size: 1.2rem;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .solution-card-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .btn-link-action {
      display: inline-flex;
      align-items: center;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--primary);
      border: 1px solid var(--primary);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      text-align: center;
      justify-content: center;
    }
    .btn-link-action:hover {
      background: var(--primary);
      color: #fff;
    }

    /* 5. 深色对比案例与出海运营理念 */
    .dark-philosophy-section {
      background: var(--bg-dark);
      color: #FFFFFF;
      padding: 80px 0;
    }
    .dark-philosophy-section .section-title {
      color: #FFFFFF;
    }
    .dark-philosophy-section .section-desc {
      color: #94A3B8;
    }
    .case-metric-box {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-bottom: 20px;
    }
    .case-metric-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding-bottom: 10px;
    }
    .case-badge {
      background: var(--accent);
      color: #FFF;
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .case-metric-val {
      font-size: 1.4rem;
      font-weight: 800;
      color: #38BDF8;
    }

    /* 6. 全球发行团队与研发故事 */
    .client-story-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .client-story-quote {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .client-author-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 7. 出海服务关键指标统计条 */
    .metrics-strip {
      background: var(--primary);
      color: #FFFFFF;
      padding: 50px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item-num {
      font-size: 2.5rem;
      font-weight: 800;
      color: #FDBA74;
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-item-label {
      font-size: 0.9rem;
      color: #CBD5E1;
    }

    /* 8. 客户口碑与行业推荐 */
    .testimonial-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .testimonial-rating {
      color: #F59E0B;
      margin-bottom: 10px;
      font-size: 0.95rem;
    }

    /* 9. 出海行业资讯与合规白皮书证据 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-card-img {
      height: 140px;
      width: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 16px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-body h4 {
      font-size: 0.95rem;
      color: var(--primary);
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .news-body p {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 10. FAQ 手风琴板块 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    details.faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: all 0.2s ease;
    }
    details.faq-item[open] {
      border-color: #94A3B8;
      box-shadow: var(--shadow-sm);
    }
    summary.faq-question {
      padding: 18px 20px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    summary.faq-question::-webkit-details-marker {
      display: none;
    }
    summary.faq-question::after {
      content: "+";
      font-size: 1.3rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.2s ease;
    }
    details[open] summary.faq-question::after {
      transform: rotate(45deg);
    }
    .faq-answer {
      padding: 0 20px 20px 20px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 11. 服务合规兜底保障 */
    .guarantee-bar {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 40px 0;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }
    .guarantee-icon {
      background: #EFF6FF;
      color: var(--primary);
      width: 44px;
      height: 44px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      flex-shrink: 0;
    }
    .guarantee-item h4 {
      font-size: 0.95rem;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .guarantee-item p {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.45;
    }

    /* 12. 底部核心对接转化表单区 */
    .conversion-section {
      background: linear-gradient(to bottom, var(--bg-light), #EDE8F5);
      padding: 80px 0 100px 0;
    }
    .conversion-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
    }
    .conversion-info h3 {
      font-size: 1.8rem;
      color: var(--primary);
      margin-bottom: 14px;
      font-weight: 800;
    }
    .conversion-info p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 0.9rem;
      color: #334155;
    }
    .form-grid-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    /* 底部固定转化条 (Sticky CTA Bar) */
    .sticky-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(15,43,72,0.96);
      backdrop-filter: blur(8px);
      color: #FFFFFF;
      padding: 12px 24px;
      z-index: 999;
      border-top: 1px solid rgba(255,255,255,0.15);
      box-shadow: 0 -4px 10px rgba(0,0,0,0.15);
    }
    .sticky-cta-container {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .sticky-cta-text {
      font-size: 0.95rem;
      font-weight: 600;
      color: #E2E8F0;
    }
    .sticky-cta-btn {
      background: var(--accent);
      color: #FFFFFF;
      padding: 8px 22px;
      font-size: 0.9rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: background 0.2s ease;
    }
    .sticky-cta-btn:hover {
      background: var(--accent-hover);
    }

    /* 页脚 Footer */
    .site-footer {
      background: #06111E;
      color: #94A3B8;
      padding: 60px 0 80px 0;
      font-size: 0.85rem;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    .footer-logo {
      font-size: 1.2rem;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .footer-links h5 {
      color: #FFFFFF;
      font-size: 0.95rem;
      margin-bottom: 16px;
    }
    .footer-links ul {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.8rem;
    }

    /* 移动端响应式 */
    @media (max-width: 1024px) {
      .grid-three-col, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-container {
        height: auto;
        padding: 14px 0;
        flex-direction: column;
        gap: 12px;
      }
      .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
      }
      .hero-grid, .global-matrix-grid, .conversion-card {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .hero-content h1 {
        font-size: 1.85rem;
      }
      .grid-three-col, .news-grid, .metrics-grid, .guarantee-grid, .footer-grid, .region-tags-cluster, .form-grid-inner {
        grid-template-columns: 1fr;
      }
      .section-wrap {
        padding: 50px 0;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .sticky-cta-container {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
    }