/* roulang page: index */
:root {
      --primary: #FF5500;
      --primary-hover: #E04B00;
      --primary-light: rgba(255, 85, 0, 0.08);
      --secondary: #0F52BA;
      --accent: #00D2A0;
      --dark-bg: #0A0F1D;
      --dark-card: #151D30;
      --text-main: #111827;
      --text-muted: #4B5563;
      --text-light: #9CA3AF;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --border-dark: #2A364F;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px -4px rgba(0,0,0,0.08);
      --shadow-lg: 0 16px 36px -6px rgba(0,0,0,0.12);
      --container-width: 1280px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.7;
      overflow-x: hidden;
    }

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

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

    ul, ol {
      list-style: none;
    }

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

    /* 顶部通知条 */
    .top-bar {
      background-color: var(--dark-bg);
      color: var(--text-light);
      font-size: 13px;
      border-bottom: 1px solid var(--border-dark);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-tags span {
      margin-right: 18px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-tags span i {
      color: var(--accent);
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      z-index: 1000;
      box-shadow: 0 2px 15px rgba(0,0,0,0.05);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary) 0%, #FF8800 100%);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      font-size: 18px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 50px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 85, 0, 0.35);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 85, 0, 0.45);
    }
    .btn-secondary {
      background-color: #fff;
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .btn-dark {
      background-color: var(--dark-bg);
      color: #fff;
    }
    .btn-dark:hover {
      background-color: #1a233a;
    }
    .mobile-toggle {
      display: none;
      font-size: 22px;
      background: none;
      border: none;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Section 通用规范 */
    .section {
      padding: 90px 0;
      position: relative;
    }
    .section-light {
      background-color: var(--bg-light);
    }
    .section-white {
      background-color: var(--bg-white);
    }
    .section-dark {
      background-color: var(--dark-bg);
      color: #ffffff;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 14px;
    }
    .section-tag-dark {
      background: rgba(255, 85, 0, 0.15);
      color: #FF7733;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-dark .section-subtitle {
      color: var(--text-light);
    }

    /* Section 1: Hero 首屏 */
    .hero-section {
      padding: 70px 0 90px;
      background: linear-gradient(180deg, #FFF6F0 0%, #FFFFFF 100%);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(255, 85, 0, 0.1);
      border: 1px solid rgba(255, 85, 0, 0.2);
      border-radius: 30px;
      color: var(--primary);
      font-weight: 600;
      font-size: 13px;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
      color: #0d1322;
    }
    .hero-title .highlight {
      color: var(--primary);
      position: relative;
    }
    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.8;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-cta-group .btn {
      padding: 14px 32px;
      font-size: 15px;
    }
    .hero-trust-bar {
      display: flex;
      gap: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .trust-item i {
      color: var(--accent);
      font-size: 15px;
    }
    .hero-visual {
      position: relative;
    }
    .hero-card-img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      border: 4px solid #ffffff;
      width: 100%;
      height: auto;
      object-fit: cover;
    }
    .floating-stat-box {
      position: absolute;
      bottom: -24px;
      left: -20px;
      background: #ffffff;
      padding: 16px 22px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      gap: 14px;
      border-left: 4px solid var(--primary);
    }
    .stat-num {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
    }
    .stat-text {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* Section 2: 架构解析与底座 */
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .arch-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-top: 28px;
    }
    .arch-item {
      display: flex;
      gap: 16px;
      background: var(--bg-white);
      padding: 18px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .arch-item-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      flex-shrink: 0;
    }
    .arch-item-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .arch-item-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .metric-badges {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .metric-badge-box {
      background: #F1F5F9;
      padding: 14px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--secondary);
    }
    .metric-badge-box .val {
      font-size: 18px;
      font-weight: 700;
      color: var(--secondary);
    }
    .metric-badge-box .lab {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* Section 3: 核心优势矩阵 (3x2 网格) */
    .grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: #ffffff;
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .feature-icon-wrapper {
      width: 54px;
      height: 54px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
    }
    .feature-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .feature-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 4: 垂直行业解决方案 (3大主卡片) */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .solution-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .solution-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .solution-img-holder {
      height: 190px;
      overflow: hidden;
      position: relative;
    }
    .solution-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .solution-card:hover .solution-img-holder img {
      transform: scale(1.05);
    }
    .solution-tag-pill {
      position: absolute;
      top: 14px;
      right: 14px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #fff;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 20px;
      font-weight: 600;
    }
    .solution-body {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .solution-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .solution-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
    }
    .solution-points {
      margin-bottom: 24px;
      flex: 1;
    }
    .solution-points li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .solution-points li i {
      color: var(--accent);
      font-size: 12px;
    }

    /* Section 5: 深色数字化底座 */
    .dark-data-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 40px;
    }
    .data-node-card {
      background: var(--dark-card);
      border: 1px solid var(--border-dark);
      padding: 24px;
      border-radius: var(--radius-md);
      text-align: center;
      position: relative;
    }
    .data-node-card i {
      font-size: 32px;
      color: var(--primary);
      margin-bottom: 14px;
      display: inline-block;
    }
    .data-node-card h4 {
      font-size: 17px;
      color: #fff;
      margin-bottom: 8px;
    }
    .data-node-card p {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.6;
    }

    /* Section 6: 业务流转 (获客-沉淀-促活-复购) */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      position: relative;
    }
    .flow-step-num {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      margin-bottom: 16px;
    }
    .flow-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .flow-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 7: 标杆案例复盘 */
    .case-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .case-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-header-img {
      height: 200px;
      width: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 28px;
    }
    .case-tag {
      font-size: 12px;
      color: var(--secondary);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .case-h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .case-narrative {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.7;
    }
    .case-metrics-row {
      display: flex;
      gap: 20px;
      padding-top: 16px;
      border-top: 1px dashed var(--border-color);
    }
    .case-m-item .m-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
    }
    .case-m-item .m-label {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* Section 8: 核心增长数据条 */
    .stats-bar-section {
      background: linear-gradient(135deg, #FF5500 0%, #E04B00 100%);
      color: #ffffff;
      padding: 50px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .stats-box-item .number {
      font-size: 40px;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 8px;
    }
    .stats-box-item .label {
      font-size: 14px;
      opacity: 0.9;
    }

    /* Section 9: 差异化对比 */
    .compare-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .compare-table th {
      background-color: #F8FAFC;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .col-highlight {
      background-color: rgba(255, 85, 0, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* Section 10: 客户评价 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .testi-stars {
      color: #F59E0B;
      margin-bottom: 14px;
      font-size: 14px;
    }
    .testi-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--bg-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--secondary);
      font-weight: 700;
    }
    .author-info h5 {
      font-size: 14px;
      font-weight: 700;
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* Section 11: 行业干货指南 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .insight-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .insight-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 12px;
    }
    .insight-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex: 1;
    }
    .insight-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Section 12: FAQ 异议拆解 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-answer {
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 13: 综合转化收口区 */
    .cta-box-card {
      background: linear-gradient(135deg, #0A0F1D 0%, #151D30 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #ffffff;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-dark);
    }
    .cta-badges-row {
      display: flex;
      justify-content: center;
      gap: 40px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .cta-badge-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .cta-badge-item i {
      color: var(--primary);
      font-size: 18px;
    }
    .cta-form-container {
      max-width: 650px;
      margin: 0 auto;
      text-align: center;
    }
    .cta-form-title {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .cta-form-subtitle {
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 30px;
    }
    .demo-inline-form {
      display: grid;
      grid-template-columns: 1fr 1fr auto;
      gap: 12px;
    }
    .demo-inline-form input {
      padding: 14px 18px;
      border-radius: 50px;
      border: 1px solid var(--border-dark);
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      font-size: 14px;
      outline: none;
    }
    .demo-inline-form input:focus {
      border-color: var(--primary);
      background: rgba(255, 255, 255, 0.12);
    }
    .demo-inline-form input::placeholder {
      color: #94A3B8;
    }
    .demo-inline-form button {
      padding: 14px 28px;
    }

    /* 底部固定转化条 */
    .bottom-floating-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(10, 15, 29, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid var(--border-dark);
      padding: 12px 24px;
      z-index: 999;
      transform: translateY(100%);
      transition: transform 0.3s ease;
    }
    .bottom-floating-bar.active {
      transform: translateY(0);
    }
    .floating-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      max-width: var(--container-width);
      margin: 0 auto;
    }
    .floating-text {
      color: #fff;
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .floating-text .tag {
      background: var(--primary);
      color: #fff;
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 700;
    }

    /* 页脚 Footer */
    .site-footer {
      background-color: #060913;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid var(--border-dark);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      font-size: 13px;
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-contact-info li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 13px;
      margin-bottom: 12px;
      color: #CBD5E1;
    }
    .footer-contact-info i {
      color: var(--primary);
      margin-top: 4px;
    }
    .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;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      position: fixed;
      top: 0;
      right: -100%;
      width: 280px;
      height: 100vh;
      background: #ffffff;
      z-index: 1001;
      box-shadow: -5px 0 25px rgba(0,0,0,0.15);
      padding: 30px 24px;
      transition: right 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .mobile-drawer.open {
      right: 0;
    }
    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 30px;
    }
    .drawer-close {
      background: none;
      border: none;
      font-size: 20px;
      cursor: pointer;
    }
    .drawer-links {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .drawer-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.5);
      z-index: 1000;
      display: none;
    }
    .drawer-overlay.open {
      display: block;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .grid-3x2, .solution-grid, .testimonial-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .dark-data-grid, .flow-steps, .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-menu, .nav-actions .btn-secondary { display: none; }
      .mobile-toggle { display: block; }
      .hero-title { font-size: 30px; }
      .section { padding: 60px 0; }
      .arch-grid, .case-container { grid-template-columns: 1fr; }
      .grid-3x2, .solution-grid, .testimonial-grid, .insights-grid { grid-template-columns: 1fr; }
      .dark-data-grid, .flow-steps, .stats-grid { grid-template-columns: 1fr; }
      .demo-inline-form { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
      .floating-text { display: none; }
      .bottom-floating-bar .btn { width: 100%; }
    }