/* roulang page: index */
:root {
      --primary: #4F46E5;
      --primary-light: #6366F1;
      --primary-dark: #3730A3;
      --accent: #10B981;
      --accent-cyan: #06B6D4;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-card: #FFFFFF;
      --bg-dark: #0F172A;
      --bg-dark-card: #1E293B;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: #334155;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.06), 0 8px 10px -6px rgba(0,0,0,0.03);
      --shadow-lg: 0 20px 30px -10px rgba(79, 70, 229, 0.12);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --max-width: 1240px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      outline: none;
      transition: var(--transition);
    }

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

    /* 顶部服务通告栏 */
    .topbar {
      background-color: var(--bg-dark);
      color: var(--text-light);
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid var(--border-dark);
    }
    .topbar-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #34D399;
      font-weight: 500;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10B981;
      box-shadow: 0 0 8px #10B981;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      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;
    }
    .brand-logo {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 8px;
      letter-spacing: -0.5px;
    }
    .brand-logo-badge {
      background: var(--primary);
      color: #fff;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 600;
    }
    .nav-links {
      display: flex;
      gap: 24px;
      list-style: none;
      align-items: center;
    }
    .nav-item a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
    }
    .nav-item a:hover {
      color: var(--primary);
      background-color: rgba(79, 70, 229, 0.06);
    }
    .nav-btn {
      background-color: var(--primary);
      color: #ffffff;
      padding: 10px 22px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.95rem;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }
    .nav-btn:hover {
      background-color: var(--primary-light);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
    }
    .menu-toggle {
      display: none;
      background: none;
      font-size: 1.5rem;
      color: var(--text-main);
    }

    /* 区域通用样式 */
    .section-spacing {
      padding: 96px 0;
    }
    .section-spacing-sm {
      padding: 64px 0;
    }
    .section-bg-white {
      background-color: var(--bg-white);
    }
    .section-bg-light {
      background-color: var(--bg-light);
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
      font-size: 0.85rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. HERO 沉浸大图轮播 */
    #hero {
      position: relative;
      background-color: var(--bg-dark);
      color: #ffffff;
      min-height: 640px;
      display: flex;
      align-items: center;
      overflow: hidden;
    }
    .hero-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.38;
      filter: saturate(1.2);
    }
    .hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 80% 20%, rgba(79, 70, 229, 0.45) 0%, rgba(15, 23, 42, 0.95) 70%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 780px;
      padding: 80px 0;
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.2;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #A5B4FC, #38BDF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #fff;
      padding: 14px 32px;
      border-radius: 30px;
      font-weight: 700;
      font-size: 1rem;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
    }
    .btn-primary:hover {
      box-shadow: 0 12px 26px rgba(79, 70, 229, 0.45);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #ffffff;
      padding: 14px 28px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 1rem;
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: #ffffff;
    }

    /* 2. INTRO 图文交错与架构 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .intro-image-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .intro-image-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .intro-tech-badge {
      position: absolute;
      bottom: 20px;
      right: 20px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      color: #fff;
      padding: 12px 20px;
      border-radius: var(--radius-md);
      font-size: 0.9rem;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .param-highlight {
      margin-top: 24px;
      padding: 18px 24px;
      background: #EEF2FF;
      border-left: 4px solid var(--primary);
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      font-size: 0.95rem;
      color: var(--primary-dark);
      font-weight: 500;
    }

    /* 3. PAINPOINTS 痛点对比网格 */
    .painpoints-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .painpoint-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      transition: var(--transition);
    }
    .painpoint-card:hover {
      border-color: #CBD5E1;
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .pain-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: #EF4444;
      background: #FEE2E2;
      padding: 3px 10px;
      border-radius: 12px;
      display: inline-block;
      margin-bottom: 16px;
    }
    .pain-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .pain-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 4. ADVANTAGES 6卡片核心优势 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .advantage-card:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-lg);
      transform: translateY(-5px);
    }
    .advantage-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .advantage-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .advantage-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. PRODUCTS 3核心方案 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .product-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .product-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-6px);
      border-color: var(--primary-light);
    }
    .product-img-wrap {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .product-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .product-card:hover .product-img-wrap img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 30px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-badge {
      align-self: flex-start;
      background: rgba(16, 185, 129, 0.1);
      color: var(--accent);
      font-weight: 700;
      font-size: 0.8rem;
      padding: 4px 10px;
      border-radius: 6px;
      margin-bottom: 12px;
    }
    .product-body h3 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .product-body p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .product-link {
      color: var(--primary);
      font-weight: 700;
      font-size: 0.95rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .product-link:hover {
      color: var(--primary-dark);
      gap: 10px;
    }

    /* 6. DARK-CASES 深色高对比案例与技术理念 */
    #dark-cases {
      background-color: var(--bg-dark);
      color: #ffffff;
      position: relative;
      overflow: hidden;
    }
    .dark-section-header h2 {
      color: #ffffff;
    }
    .dark-section-header p {
      color: #94A3B8;
    }
    .case-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .case-content-box {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
      position: relative;
    }
    .case-content-box::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
      border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
    .case-tag {
      color: #38BDF8;
      font-weight: 700;
      font-size: 0.85rem;
      margin-bottom: 12px;
      display: block;
    }
    .case-title {
      font-size: 1.7rem;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .case-desc {
      color: #CBD5E1;
      font-size: 0.98rem;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .case-specs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 20px;
    }
    .spec-item {
      background: rgba(15, 23, 42, 0.6);
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .spec-label {
      font-size: 0.8rem;
      color: #94A3B8;
    }
    .spec-val {
      font-size: 1.15rem;
      font-weight: 700;
      color: #38BDF8;
      margin-top: 4px;
    }
    .case-visual {
      position: relative;
    }
    .case-visual img {
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-dark);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    /* 7. STORIES 场景走廊 */
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .story-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 36px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .story-role {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 10px;
    }
    .story-card h3 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .story-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 8. METRICS 关键数据统计条 */
    #metrics {
      background: linear-gradient(135deg, #1E1B4B, #312E81);
      color: #ffffff;
      padding: 64px 0;
    }
    .metrics-wrapper {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item {
      padding: 16px;
    }
    .metric-number {
      font-size: 3rem;
      font-weight: 900;
      color: #38BDF8;
      line-height: 1;
      margin-bottom: 10px;
      letter-spacing: -1px;
    }
    .metric-label {
      font-size: 1rem;
      color: #E0E7FF;
      font-weight: 500;
    }

    /* 9. TESTIMONIALS 客户口碑 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 14px;
    }
    .testi-text {
      font-size: 0.95rem;
      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: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1.1rem;
    }
    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 10. WORKFLOW 部署步骤 */
    .workflow-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .workflow-step {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      position: relative;
      transition: var(--transition);
    }
    .workflow-step:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.9rem;
      margin-bottom: 18px;
    }
    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 11. NEWS 资讯与动态 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .news-img {
      height: 180px;
      object-fit: cover;
      width: 100%;
    }
    .news-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 10px;
      display: flex;
      justify-content: space-between;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-excerpt {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-more-btn {
      color: var(--primary);
      font-weight: 600;
      font-size: 0.9rem;
    }

    /* 12. FAQ 原生手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item[open] {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 22px 28px;
      font-weight: 700;
      font-size: 1.1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      color: var(--text-main);
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-item[open] .faq-icon {
      transform: rotate(180deg);
    }
    .faq-answer {
      padding: 0 28px 24px;
      font-size: 0.96rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 13. CTA-BANNER 终极行动区 */
    #cta-banner {
      background: linear-gradient(135deg, #4338CA, #6366F1);
      color: #ffffff;
      text-align: center;
      padding: 88px 0;
    }
    .cta-box {
      max-width: 760px;
      margin: 0 auto;
    }
    .cta-box h2 {
      font-size: 2.4rem;
      font-weight: 900;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .cta-box p {
      font-size: 1.15rem;
      color: #E0E7FF;
      margin-bottom: 36px;
      line-height: 1.7;
    }
    .btn-light {
      background-color: #ffffff;
      color: var(--primary-dark);
      padding: 16px 38px;
      border-radius: 30px;
      font-weight: 800;
      font-size: 1.05rem;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
      display: inline-block;
    }
    .btn-light:hover {
      background-color: #F8FAFC;
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
    }

    /* 页脚 */
    .site-footer {
      background-color: #0B1120;
      color: #94A3B8;
      padding: 80px 0 32px;
      font-size: 0.92rem;
      border-top: 1px solid var(--border-dark);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 64px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
      position: relative;
    }
    .footer-desc {
      line-height: 1.75;
      margin-top: 14px;
      max-width: 320px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a:hover {
      color: #ffffff;
      padding-left: 4px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 12px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }
    .footer-bottom p {
      color: #64748B;
    }

    /* 移动端汉堡抽屉 */
    .drawer-overlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0,0,0,0.5);
      z-index: 1001;
    }
    .drawer {
      display: none;
      position: fixed;
      top: 0;
      right: -280px;
      width: 280px;
      height: 100%;
      background: #ffffff;
      z-index: 1002;
      box-shadow: -4px 0 20px rgba(0,0,0,0.15);
      transition: right 0.3s ease;
      flex-direction: column;
      padding: 30px 24px;
    }
    .drawer.active {
      right: 0;
    }
    .drawer-overlay.active {
      display: block;
    }
    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 32px;
    }
    .drawer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .drawer-links a {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .close-btn {
      font-size: 1.5rem;
      background: none;
      border: none;
      color: var(--text-main);
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .intro-grid, .case-container {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .advantages-grid, .products-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
      .metrics-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
    }
    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .nav-links, .nav-btn {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .drawer {
        display: flex;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .section-spacing {
        padding: 60px 0;
      }
      .painpoints-grid, .advantages-grid, .products-grid, .stories-grid, .testimonials-grid, .news-grid, .workflow-timeline {
        grid-template-columns: 1fr;
      }
      .metrics-wrapper {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }