/* roulang page: index */
:root {
      --primary-navy: #0F2C59;
      --navy-dark: #0A192F;
      --navy-light: #1E3E6D;
      --accent-blue: #007AFF;
      --accent-cyan: #00C6FF;
      --accent-green: #10B981;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --border-color: #E2E8F0;
      --card-radius: 1.25rem;
      --btn-radius: 9999px;
      --shadow-sm: 0 2px 8px rgba(15, 44, 89, 0.04);
      --shadow-base: 0 4px 20px -2px rgba(15, 44, 89, 0.06);
      --shadow-hover: 0 14px 30px -4px rgba(0, 122, 255, 0.16);
      --gradient-brand: linear-gradient(135deg, #007AFF 0%, #00C6FF 100%);
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      -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 {
      font: inherit;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部双行导航 */
    .top-bar {
      background-color: var(--primary-navy);
      color: #CBD5E1;
      font-size: 0.8125rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-info-group {
      display: flex;
      align-items: center;
      gap: 1.5rem;
    }
    .top-info-item {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 3px rgba(15, 44, 89, 0.05);
      transition: all 0.3s ease;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 4.5rem;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.375rem;
      font-weight: 800;
      color: var(--primary-navy);
      letter-spacing: -0.02em;
    }
    .brand-badge {
      font-size: 0.6875rem;
      background: rgba(0, 122, 255, 0.1);
      color: var(--accent-blue);
      padding: 0.2rem 0.5rem;
      border-radius: 4px;
      font-weight: 600;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 0.5rem 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent-blue);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-blue);
      border-radius: 2px;
    }
    .nav-cta-btn {
      background: var(--gradient-brand);
      color: #FFFFFF;
      padding: 0.625rem 1.35rem;
      border-radius: var(--btn-radius);
      font-size: 0.875rem;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(0, 122, 255, 0.25);
      display: inline-block;
    }
    .nav-cta-btn:hover {
      box-shadow: 0 6px 18px rgba(0, 122, 255, 0.35);
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--primary-navy);
      cursor: pointer;
    }

    /* 板块通用 */
    section {
      padding: 5.5rem 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
    }
    .section-dark {
      background-color: var(--navy-dark);
      color: #FFFFFF;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 3.5rem auto;
    }
    .badge-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      padding: 0.35rem 0.85rem;
      border-radius: var(--btn-radius);
      background: rgba(0, 122, 255, 0.08);
      color: var(--accent-blue);
      margin-bottom: 1rem;
    }
    .section-head h2 {
      font-size: 2.125rem;
      color: var(--primary-navy);
      margin-bottom: 1rem;
      font-weight: 800;
      letter-spacing: -0.01em;
    }
    .section-dark .section-head h2 {
      color: #FFFFFF;
    }
    .section-head p {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-head p {
      color: var(--text-light);
    }

    /* 1. Hero 板块 */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
      padding: 5rem 0 6rem;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      right: 0;
      width: 55%;
      height: 100%;
      opacity: 0.08;
      background-image: url('/assets/images/6e9ba9189586da44.webp');
      background-size: cover;
      background-position: center;
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(16, 185, 129, 0.1);
      color: var(--accent-green);
      font-size: 0.8125rem;
      font-weight: 700;
      padding: 0.4rem 0.9rem;
      border-radius: var(--btn-radius);
      margin-bottom: 1.5rem;
    }
    .hero-badge-live span {
      width: 8px;
      height: 8px;
      background-color: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
    }
    .hero-content h1 {
      font-size: 2.875rem;
      line-height: 1.22;
      color: var(--primary-navy);
      font-weight: 900;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-content h1 .gradient-text {
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 2rem;
    }
    .hero-action-box {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1.25rem;
      margin-bottom: 2.5rem;
    }
    .btn-main {
      background: var(--gradient-brand);
      color: #FFFFFF;
      padding: 0.875rem 2rem;
      border-radius: var(--btn-radius);
      font-weight: 700;
      font-size: 1rem;
      box-shadow: 0 10px 25px -4px rgba(0, 122, 255, 0.35);
      border: none;
      cursor: pointer;
    }
    .btn-main:hover {
      box-shadow: 0 14px 28px -4px rgba(0, 122, 255, 0.45);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--primary-navy);
      border: 1px solid var(--border-color);
      padding: 0.875rem 1.75rem;
      border-radius: var(--btn-radius);
      font-weight: 600;
      font-size: 1rem;
      box-shadow: var(--shadow-sm);
    }
    .btn-secondary:hover {
      background: #F8FAFC;
      border-color: #CBD5E1;
    }
    .hero-trust-bar {
      display: flex;
      align-items: center;
      gap: 2rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(226, 232, 240, 0.8);
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .hero-trust-item {
      display: flex;
      align-items: center;
      gap: 0.4rem;
      font-weight: 500;
    }
    .hero-visual-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      padding: 1.75rem;
      box-shadow: 0 20px 40px -10px rgba(15, 44, 89, 0.1);
      border: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
    }
    .hero-mockup-img {
      border-radius: 1rem;
      overflow: hidden;
      margin-bottom: 1.25rem;
      border: 1px solid var(--border-color);
    }

    /* 2. 检查项 / 痛点与解决方案对比 */
    .checklist-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .check-card {
      background: var(--bg-card);
      border-radius: var(--card-radius);
      padding: 2rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-base);
      transition: all 0.3s ease;
      position: relative;
    }
    .check-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 122, 255, 0.3);
    }
    .check-status-tag {
      display: inline-block;
      font-size: 0.75rem;
      padding: 0.25rem 0.65rem;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 1rem;
      background: rgba(0, 122, 255, 0.08);
      color: var(--accent-blue);
    }
    .check-card h3 {
      font-size: 1.25rem;
      color: var(--primary-navy);
      margin-bottom: 0.75rem;
      font-weight: 700;
    }
    .check-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 3. 产品架构与品类聚合 */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .arch-preview {
      position: relative;
      border-radius: var(--card-radius);
      overflow: hidden;
      box-shadow: var(--shadow-base);
      border: 1px solid var(--border-color);
    }
    .arch-param-badges {
      position: absolute;
      bottom: 1.5rem;
      left: 1.5rem;
      right: 1.5rem;
      background: rgba(15, 44, 89, 0.88);
      backdrop-filter: blur(8px);
      color: #FFFFFF;
      padding: 1rem 1.25rem;
      border-radius: 0.75rem;
      display: flex;
      justify-content: space-around;
      font-size: 0.8125rem;
    }
    .param-item strong {
      display: block;
      color: var(--accent-cyan);
      font-size: 1.125rem;
    }
    .arch-desc h3 {
      font-size: 1.875rem;
      color: var(--primary-navy);
      margin-bottom: 1rem;
      font-weight: 800;
    }
    .arch-desc p {
      color: var(--text-muted);
      margin-bottom: 1.75rem;
      line-height: 1.7;
    }
    .arch-feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .arch-feature-item {
      display: flex;
      gap: 0.85rem;
      align-items: flex-start;
    }
    .check-icon {
      flex-shrink: 0;
      width: 22px;
      height: 22px;
      background: rgba(16, 185, 129, 0.15);
      color: var(--accent-green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 900;
      margin-top: 2px;
    }

    /* 4. 6卡片网格 - 核心优势 */
    .grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .card-6 {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2.25rem 1.75rem;
      box-shadow: var(--shadow-base);
      transition: all 0.3s ease;
    }
    .card-6:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 122, 255, 0.3);
    }
    .card-6-badge {
      display: inline-block;
      font-size: 0.6875rem;
      font-weight: 700;
      padding: 0.25rem 0.6rem;
      border-radius: 4px;
      margin-bottom: 1.25rem;
      background: rgba(0, 122, 255, 0.08);
      color: var(--accent-blue);
    }
    .card-6 h3 {
      font-size: 1.25rem;
      color: var(--primary-navy);
      margin-bottom: 0.75rem;
      font-weight: 700;
    }
    .card-6 p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. 深色理念与合规沉浸区 */
    .dark-trust-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .trust-card-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--card-radius);
      padding: 2.5rem;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    }
    .flow-steps {
      display: flex;
      flex-direction: column;
      gap: 1.75rem;
      margin-top: 1.5rem;
    }
    .flow-step-item {
      display: flex;
      gap: 1.25rem;
    }
    .step-circle {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--gradient-brand);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9375rem;
      flex-shrink: 0;
    }
    .step-text h4 {
      font-size: 1.0625rem;
      color: #FFFFFF;
      margin-bottom: 0.35rem;
    }
    .step-text p {
      font-size: 0.875rem;
      color: var(--text-light);
      line-height: 1.55;
    }

    /* 6. 套件方案对比 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
      align-items: stretch;
    }
    .price-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      padding: 2.5rem 2rem;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-base);
    }
    .price-card.featured {
      border: 2px solid var(--accent-blue);
      box-shadow: 0 16px 36px -6px rgba(0, 122, 255, 0.2);
      transform: scale(1.03);
      z-index: 2;
    }
    .flag-badge {
      position: absolute;
      top: -0.85rem;
      left: 50%;
      transform: translateX(-50%);
      background: var(--gradient-brand);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.3rem 1rem;
      border-radius: var(--btn-radius);
      box-shadow: 0 4px 10px rgba(0, 122, 255, 0.3);
    }
    .price-card h3 {
      font-size: 1.375rem;
      color: var(--primary-navy);
      margin-bottom: 0.5rem;
      font-weight: 800;
    }
    .price-sub {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      min-height: 2.5rem;
    }
    .price-features {
      list-style: none;
      margin-bottom: 2rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }
    .price-feature-item {
      font-size: 0.875rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }

    /* 7. 实施步骤链 */
    .steps-chain {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2rem 1.5rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-num-badge {
      width: 44px;
      height: 44px;
      background: rgba(0, 122, 255, 0.08);
      color: var(--accent-blue);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.125rem;
      margin-bottom: 1.25rem;
    }
    .step-card h3 {
      font-size: 1.125rem;
      color: var(--primary-navy);
      margin-bottom: 0.65rem;
      font-weight: 700;
    }
    .step-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 成果数据条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0F2C59 0%, #1E3E6D 100%);
      color: #FFFFFF;
      padding: 4.5rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item {
      padding: 1rem;
    }
    .metric-value {
      font-size: 3.25rem;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 0.5rem;
      background: linear-gradient(180deg, #FFFFFF 0%, #93C5FD 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-family: Consolas, "PingFang SC", sans-serif;
    }
    .metric-item p {
      font-size: 0.9375rem;
      color: #CBD5E1;
      font-weight: 500;
    }

    /* 9. 案例落地故事 */
    .case-card {
      background: #FFFFFF;
      border-radius: var(--card-radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      box-shadow: var(--shadow-base);
    }
    .case-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-body {
      padding: 3rem 2.5rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-body h3 {
      font-size: 1.625rem;
      color: var(--primary-navy);
      margin-bottom: 1rem;
      font-weight: 800;
    }
    .case-body p {
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .case-stats {
      display: flex;
      gap: 2rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1.5rem;
    }
    .case-stat-item strong {
      display: block;
      color: var(--accent-blue);
      font-size: 1.5rem;
      font-weight: 800;
    }
    .case-stat-item span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 10. 用户评价与证言 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
    }
    .star-rating {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 1rem;
      letter-spacing: 2px;
    }
    .testi-card blockquote {
      font-size: 0.9375rem;
      color: var(--text-main);
      line-height: 1.65;
      margin-bottom: 1.5rem;
      font-style: normal;
    }
    .user-info {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      overflow: hidden;
    }
    .user-avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .user-meta h4 {
      font-size: 0.9375rem;
      color: var(--primary-navy);
      font-weight: 700;
    }
    .user-meta span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 11. 行业资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-img {
      height: 190px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-img img {
      transform: scale(1.05);
    }
    .news-content {
      padding: 1.5rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.75rem;
      color: var(--text-light);
      margin-bottom: 0.5rem;
    }
    .news-content h3 {
      font-size: 1.125rem;
      color: var(--primary-navy);
      font-weight: 700;
      margin-bottom: 0.65rem;
      line-height: 1.4;
    }
    .news-content p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1rem;
      flex-grow: 1;
    }

    /* 12. 常见问题 FAQ */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 1rem;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 1.35rem 1.75rem;
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--primary-navy);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-question::after {
      content: '+';
      font-size: 1.25rem;
      color: var(--accent-blue);
      transition: transform 0.2s ease;
    }
    .faq-item.active .faq-question::after {
      content: '-';
    }
    .faq-answer {
      padding: 0 1.75rem 1.35rem 1.75rem;
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 13. 底部转化表单区 */
    .cta-box {
      background: linear-gradient(135deg, #0F2C59 0%, #007AFF 100%);
      border-radius: 1.75rem;
      padding: 4.5rem 3rem;
      color: #FFFFFF;
      text-align: center;
      box-shadow: 0 20px 45px rgba(0, 122, 255, 0.2);
    }
    .cta-box h2 {
      font-size: 2.375rem;
      font-weight: 800;
      margin-bottom: 1rem;
      letter-spacing: -0.01em;
    }
    .cta-box p {
      font-size: 1.0625rem;
      color: #E2E8F0;
      max-width: 680px;
      margin: 0 auto 2.5rem auto;
      line-height: 1.7;
    }
    .cta-form {
      display: flex;
      max-width: 600px;
      margin: 0 auto 1.25rem auto;
      gap: 0.75rem;
      background: rgba(255, 255, 255, 0.12);
      padding: 0.5rem;
      border-radius: var(--btn-radius);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .cta-input {
      flex: 1;
      border: none;
      background: #FFFFFF;
      padding: 0.85rem 1.5rem;
      border-radius: var(--btn-radius);
      outline: none;
      font-size: 0.9375rem;
      color: var(--text-main);
    }
    .cta-input::placeholder {
      color: #94A3B8;
    }
    .cta-submit {
      background: #0F2C59;
      color: #FFFFFF;
      border: none;
      padding: 0.85rem 1.75rem;
      border-radius: var(--btn-radius);
      font-weight: 700;
      font-size: 0.9375rem;
      cursor: pointer;
      white-space: nowrap;
      transition: background 0.2s ease;
    }
    .cta-submit:hover {
      background: #0A192F;
    }
    .cta-tip {
      font-size: 0.8125rem;
      color: #CBD5E1;
    }

    /* 页脚 */
    footer {
      background-color: var(--primary-navy);
      color: #94A3B8;
      padding: 5rem 0 2rem 0;
      font-size: 0.875rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 3rem;
      margin-bottom: 4rem;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
    }
    .footer-logo {
      font-size: 1.25rem;
      color: #FFFFFF;
      font-weight: 800;
      margin-bottom: 1rem;
      display: block;
    }
    .footer-desc {
      line-height: 1.65;
      margin-bottom: 1.5rem;
      color: #94A3B8;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 2rem;
      text-align: center;
      font-size: 0.8125rem;
      color: #64748B;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
    }

    /* 响应式样式适配 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-wrapper, .dark-trust-inner, .case-card {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .checklist-grid, .grid-6, .pricing-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-chain {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links, .nav-cta-btn {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 4.5rem;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        padding: 1.5rem;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        gap: 1rem;
      }
      .checklist-grid, .grid-6, .pricing-grid, .testimonial-grid, .news-grid, .steps-chain, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 2.125rem;
      }
      .cta-box {
        padding: 3rem 1.5rem;
      }
      .cta-form {
        flex-direction: column;
        background: none;
        padding: 0;
      }
      .cta-submit {
        width: 100%;
        padding: 0.85rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
    }