/* roulang page: index */
:root {
      --primary: #0F141C;
      --primary-light: #1A2230;
      --accent: #00B4D8;
      --accent-dark: #0284C7;
      --warning: #F59E0B;
      --bg-white: #FFFFFF;
      --bg-light: #F8FAFC;
      --bg-slate: #F1F5F9;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-sub: #64748B;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
      --radius: 8px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      line-height: 1.75;
      color: var(--text-main);
      background-color: var(--bg-white);
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部通知条与导航 */
    .top-bar {
      background-color: #070B11;
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid #1E293B;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .top-bar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      display: inline-block;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-size: 18px;
      font-weight: bold;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 0;
      position: relative;
    }
    .nav-link:hover,
    .nav-link.active {
      color: var(--accent-dark);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--accent-dark);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
      color: #FFFFFF;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.2s ease;
      min-height: 44px;
      white-space: nowrap;
    }
    .btn-primary:hover {
      box-shadow: 0 4px 12px rgba(0, 180, 216, 0.35);
      transform: translateY(-1px);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: #FFFFFF;
      color: var(--primary);
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      cursor: pointer;
      transition: all 0.2s ease;
      min-height: 44px;
      white-space: nowrap;
    }
    .btn-secondary:hover {
      background-color: var(--bg-light);
      border-color: #CBD5E1;
      transform: translateY(-1px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary);
      cursor: pointer;
      width: 44px;
      height: 44px;
    }

    /* 板块通用 */
    section {
      padding: 84px 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--primary);
      color: #F8FAFC;
    }
    .section-slate {
      background-color: var(--bg-slate);
    }
    .section-light {
      background-color: var(--bg-light);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 840px;
      margin-left: auto;
      margin-right: auto;
    }
    .badge-sub {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent-dark);
      background-color: rgba(0, 180, 216, 0.1);
      padding: 4px 12px;
      border-radius: 9999px;
      margin-bottom: 12px;
    }
    .section-dark .badge-sub {
      color: #38BDF8;
      background-color: rgba(56, 189, 248, 0.15);
    }
    .section-title {
      font-size: 32px;
      line-height: 1.3;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: inherit;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-muted);
      max-width: 760px;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 1. Hero：斜切色块首屏，大标题压在色块上 + 单 CTA */
    .hero-section {
      padding: 70px 0 100px;
      background-color: #0B0F17;
      position: relative;
      overflow: hidden;
    }
    .hero-skew-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg, rgba(15, 20, 28, 0.95) 0%, rgba(11, 15, 23, 0.98) 100%),
                  url('/assets/images/0109fab1a8389348.webp') center/cover no-repeat;
      z-index: 1;
    }
    .hero-skew-shape {
      position: absolute;
      bottom: -60px;
      left: -5%;
      width: 110%;
      height: 160px;
      background: var(--bg-white);
      transform: rotate(-2.5deg);
      z-index: 2;
    }
    .hero-container {
      position: relative;
      z-index: 3;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: rgba(2, 132, 199, 0.2);
      border: 1px solid rgba(56, 189, 248, 0.35);
      border-radius: 9999px;
      color: #38BDF8;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -0.02em;
      margin-bottom: 22px;
    }
    .hero-highlight {
      background: linear-gradient(90deg, #38BDF8 0%, #818CF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-summary {
      font-size: 16px;
      line-height: 1.85;
      color: #CBD5E1;
      margin-bottom: 36px;
      max-width: 620px;
    }
    .hero-cta-box {
      margin-bottom: 36px;
    }
    .hero-meta-strip {
      display: flex;
      gap: 28px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      color: #94A3B8;
      font-size: 13px;
    }
    .hero-meta-item strong {
      display: block;
      color: #F8FAFC;
      font-size: 18px;
      font-weight: 700;
    }
    .hero-visual-card {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(56, 189, 248, 0.25);
      border-radius: 12px;
      padding: 16px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
      backdrop-filter: blur(12px);
    }
    .hero-visual-card img {
      border-radius: 8px;
      width: 100%;
      height: 340px;
      object-fit: cover;
    }
    .hero-status-strip {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 12px;
      padding: 10px 14px;
      background: rgba(2, 6, 23, 0.6);
      border-radius: 6px;
      font-size: 12px;
      color: #94A3B8;
    }

    /* 2. 产品价值板块 */
    .value-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .value-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px 28px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .value-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .value-icon-box {
      width: 48px;
      height: 48px;
      background: rgba(0, 180, 216, 0.12);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-dark);
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .value-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .value-text {
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .value-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .value-tag {
      font-size: 11px;
      font-weight: 600;
      background: var(--bg-slate);
      color: var(--text-sub);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 3. 功能展示板块 */
    .features-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 56px;
    }
    .features-row:last-child {
      margin-bottom: 0;
    }
    .features-row.reverse {
      direction: rtl;
    }
    .features-row.reverse .features-text-wrap {
      direction: ltr;
    }
    .features-media {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      background-color: #0F172A;
    }
    .features-media img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }
    .features-media:hover img {
      transform: scale(1.02);
    }
    .features-text-wrap h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 14px;
    }
    .features-text-wrap p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.8;
    }
    .specs-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .specs-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-main);
      font-weight: 500;
    }
    .specs-bullet {
      width: 6px;
      height: 6px;
      background-color: var(--accent);
      border-radius: 50%;
    }

    /* 4. 核心优势矩阵区 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      border-left: 4px solid var(--accent);
    }
    .adv-item h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .adv-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 5. 热门自动驾驶工具矩阵 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .tool-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .tool-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }
    .tool-image-box {
      height: 190px;
      overflow: hidden;
      background-color: #0F172A;
      position: relative;
    }
    .tool-image-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .tool-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.85);
      color: #38BDF8;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .tool-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .tool-body h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .tool-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }
    .tool-footer {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .tool-param-text {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 6. 三步上手 */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      position: relative;
    }
    .step-item {
      background: #FFFFFF;
      padding: 32px 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .step-number {
      font-size: 36px;
      font-weight: 900;
      color: rgba(0, 180, 216, 0.25);
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-item h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .step-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 7. 深色对比技术理念与案例区 */
    .code-console-window {
      background: #020617;
      border: 1px solid #1E293B;
      border-radius: var(--radius);
      padding: 24px;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      color: #94A3B8;
      font-size: 13px;
      line-height: 1.8;
      box-shadow: inset 0 2px 4px rgba(0,0,0,0.5);
    }
    .console-header {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid #1E293B;
    }
    .console-circle {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .console-red { background: #EF4444; }
    .console-yellow { background: #F59E0B; }
    .console-green { background: #10B981; }

    /* 8. 行业用户落地故事区 */
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .story-card h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .story-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 20px;
    }
    .story-stat {
      padding-top: 16px;
      border-top: 1px dashed var(--border-color);
      font-size: 13px;
      color: var(--accent-dark);
      font-weight: 600;
    }

    /* 9. 多端入口板块 */
    .portal-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .portal-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      transition: all 0.2s ease;
    }
    .portal-item:hover {
      border-color: var(--accent);
      transform: translateY(-2px);
    }
    .portal-icon {
      font-size: 28px;
      margin-bottom: 12px;
      color: var(--accent-dark);
    }
    .portal-item h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .portal-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 10. 评价墙板块 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 12px;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 20px;
      font-style: normal;
    }
    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .reviewer-avatar {
      width: 42px;
      height: 42px;
      background: var(--bg-slate);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--text-sub);
    }
    .reviewer-meta h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary);
    }
    .reviewer-meta span {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 11. 系统要求与兼容性架构 */
    .specs-table-wrapper {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow-x: auto;
    }
    .specs-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .specs-table th {
      background-color: var(--bg-slate);
      color: var(--primary);
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .specs-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      color: var(--text-muted);
    }
    .specs-table tr:last-child td {
      border-bottom: none;
    }

    /* 12. 资讯板块 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .insight-thumb {
      height: 180px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .insight-card:hover .insight-thumb img {
      transform: scale(1.04);
    }
    .insight-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .insight-date {
      font-size: 12px;
      color: var(--text-sub);
      margin-bottom: 8px;
    }
    .insight-body h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.4;
      margin-bottom: 12px;
    }
    .insight-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .insight-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--accent-dark);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 13. 保障图标条与联系转化区 */
    .guarantee-bar {
      background-color: var(--bg-slate);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 36px 0;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .guarantee-icon {
      width: 44px;
      height: 44px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-dark);
      font-size: 20px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .guarantee-item h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 2px;
    }
    .guarantee-item p {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 转化表单区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: start;
    }
    .contact-form-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      height: 46px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      padding: 0 14px;
      font-size: 14px;
      color: var(--text-main);
      background-color: #FFFFFF;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--accent-dark);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }
    textarea.form-control {
      height: 110px;
      padding: 12px 14px;
      resize: vertical;
    }
    .contact-info-panel {
      padding: 36px;
      background: #0B0F17;
      color: #F8FAFC;
      border-radius: var(--radius);
    }
    .contact-info-panel h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 16px;
      color: #FFFFFF;
    }
    .contact-info-panel p {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .info-list-item {
      display: flex;
      gap: 12px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .info-list-item strong {
      color: #38BDF8;
      width: 80px;
      flex-shrink: 0;
    }

    /* 复合页脚 */
    .site-footer {
      background-color: #070B11;
      color: #94A3B8;
      padding-top: 64px;
      border-top: 1px solid #1E293B;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      color: #64748B;
      margin-bottom: 16px;
    }
    .footer-links-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .copyright-strip {
      border-top: 1px solid #1E293B;
      padding: 24px 0;
      text-align: center;
      font-size: 13px;
      color: #475569;
    }
    .copyright-strip a {
      color: #64748B;
      margin: 0 8px;
    }
    .copyright-strip a:hover {
      color: #94A3B8;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-container {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .value-grid,
      .advantages-grid,
      .products-grid,
      .steps-timeline,
      .stories-grid,
      .reviews-grid,
      .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .portal-grid,
      .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        display: none;
        gap: 16px;
      }
      .nav-menu.open {
        display: flex;
      }
      .features-row,
      .features-row.reverse,
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .features-row.reverse {
        direction: ltr;
      }
      .value-grid,
      .advantages-grid,
      .products-grid,
      .steps-timeline,
      .stories-grid,
      .reviews-grid,
      .insights-grid,
      .portal-grid,
      .guarantee-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 30px;
      }
      .section-title {
        font-size: 24px;
      }
    }