/* roulang page: index */
:root {
      --primary: #1B4D3E;
      --primary-light: #2C6E49;
      --primary-dark: #0F3127;
      --accent: #D97706;
      --accent-hover: #B45309;
      --dark-bg: #0A1F18;
      --dark-surface: #122B22;
      --bg-page: #F8FAF9;
      --bg-card: #FFFFFF;
      --border-color: #E2E8F0;
      --border-focus: #2C6E49;
      --text-main: #111827;
      --text-body: #374151;
      --text-muted: #6B7280;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 2px 4px rgba(27, 77, 62, 0.04);
      --shadow-md: 0 6px 16px -2px rgba(27, 77, 62, 0.08);
      --shadow-hover: 0 16px 32px -4px rgba(27, 77, 62, 0.14);
      --container-max: 1240px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    *, *::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", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, select, textarea {
      font: inherit;
      border: none;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部顶栏 */
    .top-bar {
      background: var(--dark-bg);
      color: #9CA3AF;
      font-size: 0.825rem;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 0.45rem 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-bar-items {
      display: flex;
      gap: 1.5rem;
      align-items: center;
    }
    .top-bar-items span {
      display: flex;
      align-items: center;
      gap: 0.35rem;
    }

    /* 主导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 10px rgba(0,0,0,0.04);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .logo-badge {
      background: var(--primary);
      color: #fff;
      padding: 0.25rem 0.6rem;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.05em;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-main);
      font-size: 0.95rem;
      position: relative;
      padding: 0.4rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-cta {
      background: var(--primary);
      color: #FFFFFF !important;
      padding: 0.6rem 1.4rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: var(--shadow-sm);
    }
    .nav-cta:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      background: transparent;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 板块基础规范 */
    .section-wrap {
      padding: 5rem 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background: #FFFFFF;
    }
    .section-wrap.dark-theme {
      background: var(--dark-bg);
      color: #E5E7EB;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 3.5rem auto;
    }
    .section-tag {
      display: inline-block;
      padding: 0.3rem 0.85rem;
      background: rgba(27, 77, 62, 0.08);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.825rem;
      font-weight: 700;
      margin-bottom: 0.85rem;
      letter-spacing: 0.05em;
    }
    .dark-theme .section-tag {
      background: rgba(44, 110, 73, 0.25);
      color: #6EE7B7;
    }
    .section-title {
      font-size: clamp(1.65rem, 3.2vw, 2.35rem);
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 1rem;
    }
    .dark-theme .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .dark-theme .section-desc {
      color: #9CA3AF;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-weight: 600;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      cursor: pointer;
      font-size: 1rem;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .btn-accent {
      background: var(--accent);
      color: #fff;
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(217, 119, 6, 0.25);
    }
    .btn-outline {
      border: 1px solid var(--border-color);
      background: #FFFFFF;
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--bg-page);
    }

    /* 1. 首屏 Hero 架构 (新品发布 + 倒计时环 + 卖点要点) */
    .hero-section {
      background: linear-gradient(135deg, rgba(10, 31, 24, 0.95), rgba(27, 77, 62, 0.88)), url('/assets/images/21c701a8ee962c5e.webp') center/cover no-repeat;
      color: #FFFFFF;
      padding: 5.5rem 0 6rem 0;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-content h1 {
      font-size: clamp(2.1rem, 4.5vw, 3.35rem);
      font-weight: 900;
      line-height: 1.22;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-highlight {
      color: #FBBF24;
      text-decoration: underline;
      text-decoration-color: rgba(251, 191, 36, 0.4);
      text-underline-offset: 6px;
    }
    .hero-lead {
      font-size: 1.1rem;
      color: #D1D5DB;
      line-height: 1.75;
      margin-bottom: 2rem;
    }
    .hero-points {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1rem;
      margin-bottom: 2.25rem;
    }
    .point-item {
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 0.85rem 1.15rem;
      border-radius: var(--radius-md);
      font-size: 0.925rem;
      display: flex;
      align-items: center;
      gap: 0.6rem;
      color: #F3F4F6;
    }
    .point-item strong {
      color: #6EE7B7;
    }
    .hero-actions {
      display: flex;
      gap: 1.25rem;
      flex-wrap: wrap;
    }

    /* 首屏发布倒计时卡片 */
    .hero-launch-card {
      background: rgba(18, 43, 34, 0.85);
      border: 1px solid rgba(44, 110, 73, 0.4);
      backdrop-filter: blur(16px);
      padding: 2.25rem;
      border-radius: var(--radius-lg);
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
      text-align: center;
    }
    .launch-tag {
      background: rgba(217, 119, 6, 0.2);
      color: #FBBF24;
      border: 1px solid rgba(217, 119, 6, 0.4);
      padding: 0.35rem 1rem;
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 700;
      display: inline-block;
      margin-bottom: 1.25rem;
    }
    .launch-title {
      font-size: 1.35rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.5rem;
    }
    .countdown-ring-box {
      display: flex;
      justify-content: center;
      gap: 1rem;
      margin-bottom: 2rem;
    }
    .ring-col {
      background: rgba(0, 0, 0, 0.3);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-md);
      padding: 1rem 0.85rem;
      min-width: 68px;
    }
    .ring-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: #6EE7B7;
      line-height: 1;
      margin-bottom: 0.25rem;
    }
    .ring-label {
      font-size: 0.75rem;
      color: #9CA3AF;
    }
    .launch-stats {
      display: flex;
      justify-content: space-around;
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 1.25rem;
      font-size: 0.85rem;
      color: #D1D5DB;
    }
    .launch-stats strong {
      color: #FFFFFF;
      display: block;
      font-size: 1.15rem;
    }

    /* 2. 入口矩阵区 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.85rem;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .matrix-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }
    .matrix-icon {
      width: 52px;
      height: 52px;
      background: rgba(27, 77, 62, 0.08);
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 1.25rem;
    }
    .matrix-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.65rem;
    }
    .matrix-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .matrix-link {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    /* 3. 技术体系与认证区 */
    .tech-system-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .tech-img-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .tech-img-box img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .tech-badge-overlay {
      position: absolute;
      bottom: 1.5rem;
      left: 1.5rem;
      background: rgba(10, 31, 24, 0.9);
      backdrop-filter: blur(10px);
      color: #fff;
      padding: 1rem 1.5rem;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255,255,255,0.15);
    }
    .cert-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.25rem;
      margin-top: 1.75rem;
    }
    .cert-item {
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      padding: 1rem;
      border-radius: var(--radius-sm);
    }
    .cert-item strong {
      display: block;
      color: var(--primary);
      font-size: 0.95rem;
      margin-bottom: 0.25rem;
    }
    .cert-item span {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 4. 核心优势矩阵 (6卡片) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .adv-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: var(--transition);
      position: relative;
    }
    .adv-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .adv-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: rgba(27, 77, 62, 0.15);
      position: absolute;
      top: 1.5rem;
      right: 1.5rem;
    }
    .adv-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.65rem;
    }
    .adv-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. 热门农业机器人产品矩阵 (3大卡片) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .prod-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .prod-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-6px);
      border-color: var(--primary-light);
    }
    .prod-img-wrap {
      height: 240px;
      overflow: hidden;
      position: relative;
    }
    .prod-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .prod-card:hover .prod-img-wrap img {
      transform: scale(1.05);
    }
    .prod-badge {
      position: absolute;
      top: 1rem;
      left: 1rem;
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.3rem 0.75rem;
      border-radius: var(--radius-sm);
    }
    .prod-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .prod-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .prod-spec-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-bottom: 1rem;
    }
    .spec-tag {
      background: var(--bg-page);
      color: var(--primary-dark);
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.25rem 0.55rem;
      border-radius: var(--radius-sm);
      border: 1px solid #E2E8F0;
    }
    .prod-body p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }

    /* 6. 深色沉浸全景作业系统 */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      margin-top: 3rem;
    }
    .flow-step {
      background: var(--dark-surface);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      position: relative;
    }
    .flow-num {
      width: 36px;
      height: 36px;
      background: var(--primary-light);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 1rem;
    }
    .flow-step h4 {
      font-size: 1.1rem;
      color: #FFFFFF;
      margin-bottom: 0.5rem;
    }
    .flow-step p {
      font-size: 0.875rem;
      color: #9CA3AF;
      line-height: 1.6;
    }

    /* 7. 精选分类与作业场景 (场景案例墙) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .scenario-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .scenario-img {
      height: 200px;
      overflow: hidden;
    }
    .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .scenario-info {
      padding: 1.5rem;
    }
    .scenario-info h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .scenario-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 案例故事深度卡 (Story Grid) */
    .story-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 2.5rem;
    }
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .story-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      text-transform: uppercase;
      margin-bottom: 0.5rem;
    }
    .story-card h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 1rem;
      line-height: 1.4;
    }
    .story-metrics-box {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
      background: var(--bg-page);
      padding: 1rem;
      border-radius: var(--radius-md);
      margin-bottom: 1.25rem;
      text-align: center;
    }
    .sm-item strong {
      font-size: 1.25rem;
      color: var(--primary);
      display: block;
    }
    .sm-item span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    .story-card p {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 9. 关键数据统计条 */
    .metrics-bar {
      background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
      color: #FFFFFF;
      padding: 3.5rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item strong {
      font-size: clamp(2rem, 3.8vw, 3rem);
      font-weight: 900;
      line-height: 1.1;
      display: block;
      color: #FDE047;
      margin-bottom: 0.5rem;
    }
    .metric-item p {
      font-size: 0.95rem;
      color: #E5E7EB;
      font-weight: 500;
    }

    /* 10. 用户评价与社会认同 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
    }
    .stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 1rem;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 1.5rem;
      font-style: italic;
    }
    .reviewer-box {
      display: flex;
      align-items: center;
      gap: 0.85rem;
    }
    .reviewer-avatar {
      width: 46px;
      height: 46px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .reviewer-meta h4 {
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .reviewer-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 11. 资讯动态与最新发布 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
      display: inline-block;
    }
    .news-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.4;
      margin-bottom: 0.75rem;
    }
    .news-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 12. 固件版本更新日志与多端App生态 */
    .version-app-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: start;
    }
    .version-card, .app-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      box-shadow: var(--shadow-sm);
    }
    .timeline {
      list-style: none;
      position: relative;
      padding-left: 1.5rem;
      border-left: 2px solid #E2E8F0;
      margin-top: 1.5rem;
    }
    .timeline-item {
      position: relative;
      margin-bottom: 1.75rem;
    }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: -1.95rem;
      top: 0.25rem;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--primary);
    }
    .timeline-item strong {
      font-size: 0.95rem;
      color: var(--text-main);
      display: block;
      margin-bottom: 0.25rem;
    }
    .timeline-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .app-features {
      list-style: none;
      margin: 1.5rem 0 2rem 0;
    }
    .app-features li {
      padding: 0.65rem 0;
      border-bottom: 1px solid #F1F5F9;
      font-size: 0.925rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    /* 13. FAQ 快速解答区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 1.25rem 1.75rem;
      font-weight: 700;
      color: var(--text-main);
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFCFB;
    }
    .faq-answer-inner {
      padding: 0 1.75rem 1.25rem 1.75rem;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 14. 咨询与预约收口行动区 (CTA + 表单) */
    .cta-box {
      background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-dark) 100%);
      border-radius: var(--radius-lg);
      padding: 4rem 3.5rem;
      color: #FFFFFF;
      box-shadow: var(--shadow-hover);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 3.5rem;
      align-items: center;
    }
    .cta-content h2 {
      font-size: clamp(1.85rem, 3.5vw, 2.5rem);
      font-weight: 800;
      margin-bottom: 1.25rem;
      line-height: 1.25;
    }
    .cta-content p {
      font-size: 1rem;
      color: #D1D5DB;
      line-height: 1.7;
      margin-bottom: 2rem;
    }
    .guarantee-badges {
      display: flex;
      gap: 1.5rem;
      flex-wrap: wrap;
    }
    .g-badge {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.875rem;
      color: #6EE7B7;
    }
    .form-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 2.25rem;
      color: var(--text-main);
    }
    .form-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 0.4rem;
      color: var(--text-body);
    }
    .form-control {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: var(--bg-page);
      font-size: 0.95rem;
      color: var(--text-main);
      transition: var(--transition);
    }
    .form-control:focus {
      background: #FFFFFF;
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(44, 110, 73, 0.15);
    }
    .btn-submit {
      width: 100%;
      background: var(--primary);
      color: #FFFFFF;
      padding: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 1rem;
      transition: var(--transition);
    }
    .btn-submit:hover {
      background: var(--primary-light);
    }

    /* 页脚设计 */
    .site-footer {
      background: #06130F;
      color: #9CA3AF;
      padding: 4.5rem 0 2rem 0;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 1rem;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 1.25rem;
      font-size: 0.875rem;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 0.75rem;
    }
    .footer-col ul li a:hover {
      color: #6EE7B7;
    }
    .footer-contact li {
      display: flex;
      align-items: flex-start;
      gap: 0.5rem;
      margin-bottom: 0.85rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.825rem;
    }

    /* 响应式断点系统 */
    @media (max-width: 1024px) {
      .matrix-grid, .workflow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .product-grid, .advantage-grid, .scenario-grid, .review-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
        gap: 1rem;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-cta { display: none; }
      
      .hero-grid, .tech-system-grid, .cta-grid, .version-app-grid, .story-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .product-grid, .advantage-grid, .scenario-grid, .review-grid, .news-grid, .matrix-grid, .workflow-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
      }
      .hero-points {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .section-wrap {
        padding: 3.5rem 0;
      }
      .cta-box {
        padding: 2.5rem 1.5rem;
      }
    }