/* roulang page: index */
:root {
      --primary: #0F52BA;
      --secondary: #2563EB;
      --accent: #0D9488;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0B132B;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-pill: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 20px 25px -5px rgba(15, 82, 186, 0.1), 0 8px 10px -6px rgba(15, 82, 186, 0.08);
      --transition: all 0.3s ease;
      --container-max: 1200px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部双行导航 */
    .top-utility-bar {
      background-color: #F1F5F9;
      height: 36px;
      font-size: 12px;
      color: #64748B;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      align-items: center;
    }
    .utility-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .utility-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .utility-badge::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--accent);
      border-radius: 50%;
      display: inline-block;
    }

    .main-nav-sticky {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-size: 16px;
      font-weight: 900;
    }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 28px;
      align-items: center;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-btn {
      background-color: var(--primary);
      color: #FFF !important;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      transition: var(--transition);
      display: inline-block;
    }
    .nav-btn:hover {
      background-color: var(--secondary);
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
    }
    .btn-primary:hover {
      background-color: var(--secondary);
      box-shadow: 0 6px 16px rgba(15, 82, 186, 0.3);
      transform: translateY(-1px);
    }
    .btn-outline {
      background-color: transparent;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: #F8FAFC;
    }

    /* 板块通用头部 */
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      background: rgba(37, 99, 235, 0.08);
      color: var(--secondary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 样式变体：板块基础 */
    .section-padding {
      padding: 88px 0;
    }
    .section-alt-bg {
      background-color: #F1F5F9;
    }

    /* 1. Hero 区域：Bento 首屏 */
    .hero-section {
      padding: 60px 0 40px;
      background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
      position: relative;
    }
    .bento-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      grid-template-rows: auto auto;
      gap: 24px;
      margin-bottom: 30px;
    }
    .bento-main {
      grid-row: span 2;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      background-image: linear-gradient(rgba(255,255,255,0.92), rgba(255,255,255,0.92)), url('/assets/images/841ed93db5e8f16f.webp');
      background-size: cover;
      background-position: center;
    }
    .bento-main h1 {
      font-size: 38px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 18px;
    }
    .bento-main h1 span {
      color: var(--primary);
    }
    .bento-main p {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 28px;
      line-height: 1.75;
    }
    .bento-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .bento-feature {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .bento-feature:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .feature-icon-title {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 10px;
    }
    .feature-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--accent);
    }
    .bento-feature h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
    }
    .bento-feature p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .bento-cta-bar {
      background: linear-gradient(90deg, #0F52BA 0%, #2563EB 100%);
      color: #FFF;
      border-radius: var(--radius-md);
      padding: 18px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: 0 10px 20px rgba(15, 82, 186, 0.2);
    }
    .bento-cta-bar span {
      font-weight: 600;
      font-size: 15px;
    }

    /* 板块 1: 指标看板区 */
    #metrics-board {
      padding: 20px 0 60px;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .metric-value {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      font-feature-settings: "tnum";
    }
    .metric-value small {
      font-size: 16px;
      font-weight: 600;
      margin-left: 2px;
    }
    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块 2: 品牌与产品介绍区 */
    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .about-text h2 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 20px;
      line-height: 1.35;
    }
    .about-text p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .cert-badges {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .cert-pill {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .cert-pill i {
      color: var(--accent);
      font-weight: bold;
    }
    .about-image {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .about-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 板块 3: 核心优势区 (6 卡片矩阵) */
    .grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(37, 99, 235, 0.4);
    }
    .adv-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--secondary);
      margin-bottom: 12px;
      opacity: 0.85;
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .adv-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 4: 服务矩阵与热门机载产品区 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .service-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .service-img {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .service-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .service-card:hover .service-img img {
      transform: scale(1.05);
    }
    .service-body {
      padding: 26px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-body h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .service-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .payload-specs {
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      padding: 12px;
      font-size: 12px;
      color: var(--text-muted);
      border-left: 3px solid var(--primary);
    }

    /* 板块 5: 深色案例对比与作业理念区 */
    .dark-section {
      background-color: var(--bg-dark);
      color: #F1F5F9;
      padding: 90px 0;
    }
    .dark-section .section-title {
      color: #FFFFFF;
    }
    .dark-section .section-desc {
      color: var(--text-light);
    }
    .dark-comparison-table {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 40px;
    }
    .compare-box {
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .compare-box.old-way {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .compare-box.new-way {
      background: linear-gradient(145deg, rgba(15, 82, 186, 0.25) 0%, rgba(37, 99, 235, 0.1) 100%);
      border: 1px solid rgba(37, 99, 235, 0.4);
    }
    .compare-box h3 {
      font-size: 20px;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .compare-row {
      margin-bottom: 16px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .compare-row:last-child {
      border-bottom: none;
      margin-bottom: 0;
      padding-bottom: 0;
    }
    .compare-title {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 4px;
    }
    .compare-val {
      font-size: 16px;
      font-weight: 600;
    }
    .compare-box.new-way .compare-val {
      color: #38BDF8;
    }

    /* 板块 6: 用户故事与作业成果区 */
    .story-item {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 48px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .story-item:last-child {
      margin-bottom: 0;
    }
    .story-item.reverse {
      grid-template-columns: 1.2fr 1fr;
    }
    .story-img {
      border-radius: var(--radius-sm);
      overflow: hidden;
      max-height: 280px;
    }
    .story-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-content h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .story-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .story-meta {
      display: flex;
      gap: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--secondary);
    }

    /* 板块 7: 平台保障与合规护航体系 */
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .assurance-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .assurance-card .badge-icon {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #EFF6FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      font-size: 20px;
      font-weight: bold;
    }
    .assurance-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .assurance-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 8: 关键数据统计条 */
    .data-statistics-bar {
      background: linear-gradient(135deg, #0F52BA 0%, #1D4ED8 100%);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .stats-flex {
      display: flex;
      justify-content: space-around;
      align-items: center;
      text-align: center;
      flex-wrap: wrap;
      gap: 30px;
    }
    .stat-item-giant {
      font-size: 46px;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 8px;
      letter-spacing: -1px;
    }
    .stat-item-desc {
      font-size: 15px;
      color: #BFDBFE;
      font-weight: 500;
    }

    /* 板块 9: 发展里程碑与技术演进史 */
    .timeline {
      position: relative;
      max-width: 860px;
      margin: 0 auto;
      padding: 20px 0;
    }
    .timeline::after {
      content: '';
      position: absolute;
      width: 2px;
      background: var(--border-color);
      top: 0;
      bottom: 0;
      left: 50%;
      margin-left: -1px;
    }
    .timeline-item {
      padding: 10px 40px;
      position: relative;
      width: 50%;
    }
    .timeline-item.left {
      left: 0;
      text-align: right;
    }
    .timeline-item.right {
      left: 50%;
      text-align: left;
    }
    .timeline-item::after {
      content: '';
      position: absolute;
      width: 14px;
      height: 14px;
      right: -7px;
      background-color: #FFFFFF;
      border: 3px solid var(--primary);
      top: 22px;
      border-radius: 50%;
      z-index: 1;
    }
    .timeline-item.right::after {
      left: -7px;
    }
    .timeline-content {
      padding: 20px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .timeline-year {
      font-size: 13px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 4px;
    }
    .timeline-content h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .timeline-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 10: 用户与行业伙伴评价区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }
    .testi-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .author-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--primary);
    }
    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块 11: 行业资讯与内嵌技术动态区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 12px;
    }
    .news-tag {
      background: #F1F5F9;
      padding: 2px 8px;
      border-radius: 4px;
      color: var(--secondary);
      font-weight: 500;
    }
    .news-card h3 {
      font-size: 17px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .news-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .news-btn {
      align-self: flex-start;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      cursor: pointer;
    }

    /* 板块 12: 常见问题 FAQ 手风琴区 */
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      font-size: 16px;
      user-select: none;
    }
    .faq-header:hover {
      background-color: #F8FAFC;
    }
    .faq-icon {
      font-size: 18px;
      transition: transform 0.3s ease;
      color: var(--secondary);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      padding: 0 24px;
      background: #FFFFFF;
    }
    .faq-content p {
      padding-bottom: 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    /* 板块 13: 转化引导区 (底端全宽 CTA) */
    .conversion-section {
      background: linear-gradient(135deg, #0B132B 0%, #172554 100%);
      color: #FFFFFF;
      padding: 80px 0;
    }
    .cta-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-text h2 {
      font-size: 34px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .cta-text p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .cta-direct-call {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .call-icon {
      width: 44px;
      height: 44px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
    }
    .call-num {
      font-size: 20px;
      font-weight: 700;
      color: #38BDF8;
    }
    .cta-form-card {
      background: #FFFFFF;
      color: var(--text-main);
      padding: 36px;
      border-radius: var(--radius-md);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    }
    .cta-form-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      background: var(--primary);
      color: #FFFFFF;
      border: none;
      padding: 12px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 8px;
    }
    .form-submit-btn:hover {
      background: var(--secondary);
    }

    /* 全功能 Footer */
    .site-footer {
      background-color: var(--bg-dark);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--text-light);
      padding: 60px 0 30px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-brand h3 {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--text-light);
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .bento-grid {
        grid-template-columns: 1fr;
      }
      .grid-3x2, .service-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid, .assurance-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cta-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .bento-main {
        padding: 24px;
      }
      .bento-main h1 {
        font-size: 28px;
      }
      .about-split, .story-item, .story-item.reverse {
        grid-template-columns: 1fr;
      }
      .dark-comparison-table {
        grid-template-columns: 1fr;
      }
      .timeline::after {
        left: 20px;
      }
      .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 10px;
      }
      .timeline-item.right {
        left: 0%;
      }
      .timeline-item.left {
        text-align: left;
      }
      .timeline-item::after {
        left: 13px;
      }
      .grid-3x2, .service-grid, .testimonial-grid, .news-grid, .metrics-grid, .assurance-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
      .stats-flex {
        flex-direction: column;
      }
    }