/* roulang page: index */
:root {
      --primary: #0F4C81;
      --primary-dark: #0B3C68;
      --accent: #02B875;
      --accent-hover: #00A86B;
      --accent-soft: rgba(2, 184, 117, 0.12);
      --dark-slate: #0B132B;
      --dark-card: #1C2541;
      --text-main: #1E293B;
      --text-body: #475569;
      --text-light: #94A3B8;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px rgba(15, 76, 129, 0.08);
      --shadow-lg: 0 16px 36px rgba(15, 76, 129, 0.14);
      --transition: all 0.3s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      color: var(--text-body);
      background-color: var(--bg-white);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部通栏导航 */
    .top-bar {
      background-color: #07233B;
      color: #CBD5E1;
      font-size: 13px;
      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;
    }
    .top-bar-left span {
      margin-right: 20px;
    }
    .top-bar-right a {
      color: var(--accent);
      font-weight: 500;
    }

    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .logo-badge {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: bold;
      font-size: 20px;
    }
    .logo-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-menu a:hover {
      color: var(--primary);
    }
    .nav-menu a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: var(--transition);
    }
    .nav-menu a:hover::after {
      width: 100%;
    }
    .nav-cta-btn {
      background-color: var(--accent);
      color: #fff !important;
      padding: 10px 22px;
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(2, 184, 117, 0.3);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .nav-cta-btn:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(2, 184, 117, 0.4);
    }

    /* 移动端菜单按钮 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 通用版块标题体系 */
    .section-wrap {
      padding: 90px 0;
      position: relative;
    }
    .bg-light {
      background-color: var(--bg-light);
    }
    .bg-white {
      background-color: var(--bg-white);
    }
    .bg-dark {
      background-color: var(--dark-slate);
      color: #fff;
    }
    .section-header {
      margin-bottom: 50px;
      max-width: 840px;
    }
    .section-header.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .tag-sub {
      display: inline-block;
      padding: 4px 14px;
      background: var(--accent-soft);
      color: var(--accent-hover);
      font-size: 13px;
      font-weight: 600;
      border-radius: 30px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .bg-dark .section-title {
      color: #fff;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-body);
      line-height: 1.8;
    }
    .bg-dark .section-desc {
      color: #94A3B8;
    }

    /* 按钮通用体系 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #fff;
      box-shadow: 0 4px 12px rgba(15, 76, 129, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #fff;
      box-shadow: 0 4px 12px rgba(2, 184, 117, 0.3);
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
    }
    .btn-outline-white {
      border-color: rgba(255,255,255,0.4);
      color: #fff;
      background: rgba(255,255,255,0.05);
    }
    .btn-outline-white:hover {
      border-color: #fff;
      background: rgba(255,255,255,0.15);
    }

    /* 板块01: Hero Banner (全宽沉浸 + 指标看板 + 倒计时条) */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(11, 19, 43, 0.88) 0%, rgba(15, 76, 129, 0.85) 100%), url('/assets/images/01c1dcf79666514d.jpg') center/cover no-repeat;
      color: #fff;
      padding: 100px 0 80px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 50px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.28;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      color: var(--accent);
    }
    .hero-intro {
      font-size: 16px;
      line-height: 1.8;
      color: #E2E8F0;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .hero-countdown-strip {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(8px);
      padding: 14px 20px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 15px;
    }
    .countdown-title {
      font-size: 14px;
      color: #CBD5E1;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .countdown-badge {
      background: #EF4444;
      color: #fff;
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: bold;
    }
    .countdown-timer {
      font-family: monospace;
      font-size: 16px;
      font-weight: bold;
      color: var(--accent);
      letter-spacing: 1px;
    }

    .hero-metrics-board {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    }
    .metric-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .metric-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .metric-info h4 {
      font-size: 15px;
      color: #CBD5E1;
      margin-bottom: 4px;
    }
    .metric-info p {
      font-size: 13px;
      color: #94A3B8;
    }
    .metric-num {
      font-size: 28px;
      font-weight: 800;
      color: var(--accent);
    }

    /* 板块02: 系统概览与技术标准 */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .overview-img-wrap {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .overview-badge-float {
      position: absolute;
      bottom: 20px;
      right: 20px;
      background: rgba(11, 19, 43, 0.9);
      color: #fff;
      padding: 12px 20px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      border-left: 4px solid var(--accent);
    }
    .spec-list {
      margin-top: 24px;
    }
    .spec-item {
      display: flex;
      gap: 16px;
      margin-bottom: 20px;
    }
    .spec-icon {
      width: 36px;
      height: 36px;
      background: var(--accent-soft);
      color: var(--accent-hover);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }
    .spec-text h4 {
      font-size: 17px;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .spec-text p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块03: 核心功能优势矩阵 (3x2) */
    .grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(15, 76, 129, 0.3);
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      background: #EBF3FA;
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 18px;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 板块04: 全场景解决方案 (3大卡片) */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .solution-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .solution-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .solution-img-box {
      height: 200px;
      position: relative;
      overflow: hidden;
    }
    .solution-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .solution-card:hover .solution-img-box img {
      transform: scale(1.05);
    }
    .solution-body {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .solution-body h3 {
      font-size: 20px;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .solution-body p {
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .solution-features {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      margin-bottom: 24px;
    }
    .solution-features li {
      font-size: 13px;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .solution-features li::before {
      content: "✔";
      color: var(--accent);
      font-weight: bold;
    }

    /* 板块05: 深色沉浸式理念 */
    .dark-concept-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .topology-card {
      background: var(--dark-card);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .topo-node {
      background: rgba(255,255,255,0.04);
      border: 1px dashed rgba(2, 184, 117, 0.4);
      border-radius: var(--radius-sm);
      padding: 16px;
      margin-bottom: 16px;
    }
    .topo-node:last-child { margin-bottom: 0; }
    .topo-header {
      font-size: 15px;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 4px;
    }
    .topo-desc {
      font-size: 13px;
      color: #94A3B8;
    }

    /* 板块06: 深度客户成功案例 */
    .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      box-shadow: var(--shadow-md);
    }
    .case-img {
      height: 100%;
      min-height: 380px;
      object-fit: cover;
    }
    .case-info {
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-tag {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .case-title {
      font-size: 24px;
      color: var(--text-main);
      font-weight: 800;
      margin-bottom: 16px;
    }
    .case-desc {
      font-size: 15px;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .case-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      padding-top: 20px;
      border-top: 1px solid var(--border-color);
    }
    .stat-box h5 {
      font-size: 24px;
      color: var(--accent-hover);
      font-weight: 800;
    }
    .stat-box span {
      font-size: 13px;
      color: var(--text-light);
    }

    /* 板块07: 传统手工 VS 数字化 对比 */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .compare-card {
      border-radius: var(--radius-md);
      padding: 36px;
      border: 1px solid var(--border-color);
    }
    .compare-card.traditional {
      background: #FFF7F7;
      border-color: #FECACA;
    }
    .compare-card.modern {
      background: #F0FDF4;
      border-color: #BBF7D0;
    }
    .compare-title {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .compare-card.traditional .compare-title { color: #DC2626; }
    .compare-card.modern .compare-title { color: #16A34A; }
    .compare-list li {
      margin-bottom: 16px;
      font-size: 14px;
      display: flex;
      align-items: flex-start;
      gap: 12px;
      line-height: 1.6;
    }
    .compare-card.traditional li::before {
      content: "✕";
      color: #DC2626;
      font-weight: bold;
    }
    .compare-card.modern li::before {
      content: "✓";
      color: #16A34A;
      font-weight: bold;
    }

    /* 板块08: 关键数据里程碑横条 */
    .milestone-strip {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #fff;
      padding: 60px 0;
    }
    .milestone-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .milestone-val {
      font-size: 44px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 8px;
      font-family: Impact, -apple-system, sans-serif;
      letter-spacing: 1px;
    }
    .milestone-lbl {
      font-size: 15px;
      color: #E2E8F0;
      font-weight: 500;
    }

    /* 板块09: 真实客户口碑评价 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }
    .stars {
      color: #F59E0B;
      font-size: 16px;
      margin-bottom: 14px;
    }
    .testimonial-text {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .user-avatar-initial {
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 16px;
    }
    .user-meta h4 {
      font-size: 15px;
      color: var(--text-main);
    }
    .user-meta span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块10: 行业资讯与动态 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-img-wrap {
      height: 180px;
      overflow: hidden;
    }
    .news-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      color: var(--text-main);
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .news-summary {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      flex-grow: 1;
    }

    /* 板块11: 平台架构与服务保障 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .security-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 28px 20px;
      text-align: center;
    }
    .security-icon {
      font-size: 32px;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .security-card h4 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .security-card p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块12: FAQ 手风琴 */
    .faq-wrapper {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 16px;
      color: var(--text-main);
      user-select: none;
    }
    .faq-question:hover {
      background-color: var(--bg-light);
    }
    .faq-icon {
      font-size: 20px;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 板块13: 转化表单与终极行动号召 */
    .cta-container {
      background: linear-gradient(135deg, var(--dark-slate) 0%, var(--primary-dark) 100%);
      border-radius: var(--radius-lg);
      padding: 60px;
      color: #fff;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 60px;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-text h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .cta-text p {
      font-size: 15px;
      color: #CBD5E1;
      margin-bottom: 28px;
      line-height: 1.8;
    }
    .cta-perks li {
      font-size: 14px;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .cta-perks li span {
      color: var(--accent);
      font-weight: bold;
    }
    .cta-form {
      background: #FFFFFF;
      padding: 36px;
      border-radius: var(--radius-md);
      color: var(--text-main);
      box-shadow: 0 20px 40px rgba(0,0,0,0.25);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      height: 46px;
      padding: 0 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
      background: #FDFDFD;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
    }
    select.form-control {
      appearance: none;
      background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2394A3B8%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.4-12.8z%22%2F%3E%3C%2Fsvg%3E');
      background-repeat: no-repeat;
      background-position: right 14px top 50%;
      background-size: 10px auto;
    }
    .form-submit-btn {
      width: 100%;
      height: 48px;
      background: var(--accent);
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 14px rgba(2, 184, 117, 0.3);
      margin-top: 10px;
    }
    .form-submit-btn:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
    }
    .form-tips {
      font-size: 11px;
      color: var(--text-light);
      margin-top: 10px;
      text-align: center;
    }

    /* 统一页脚 */
    .site-footer {
      background: #071526;
      color: #94A3B8;
      padding: 70px 0 30px;
      font-size: 14px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 20px;
      font-weight: 700;
    }
    .footer-desc {
      line-height: 1.8;
      margin-top: 16px;
      font-size: 13px;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: #fff;
    }
    .contact-item {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 28px;
      text-align: center;
      font-size: 12px;
      color: #64748B;
    }
    .footer-bottom a {
      color: #94A3B8;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid, .overview-grid, .dark-concept-grid, .cta-container {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .grid-3x2, .solution-grid, .news-grid, .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .security-grid, .milestone-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .mobile-toggle { display: block; }
      .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        display: none;
        gap: 16px;
      }
      .nav-menu.show {
        display: flex;
      }
      .section-wrap { padding: 60px 0; }
      .section-title { font-size: 26px; }
      .hero-content h1 { font-size: 30px; }
      .grid-3x2, .solution-grid, .news-grid, .testimonial-grid, .compare-container {
        grid-template-columns: 1fr;
      }
      .case-card { grid-template-columns: 1fr; }
      .case-img { min-height: 240px; }
      .case-info { padding: 26px; }
      .milestone-grid, .security-grid {
        grid-template-columns: 1fr;
      }
      .cta-container {
        padding: 30px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }