/* roulang page: index */
:root {
      --primary-dark: #0B192C;
      --deep-bg: #0D131F;
      --brand-blue: #0052D4;
      --brand-mid: #4364F7;
      --brand-light: #6FB1FC;
      --accent-green: #00C897;
      --accent-purple: #7B2CBF;
      --bg-white: #FFFFFF;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-sub: #64748B;
      --border-card: rgba(226, 232, 240, 0.9);
      --card-shadow: 0 10px 25px -5px rgba(0, 82, 212, 0.06), 0 8px 10px -6px rgba(0, 82, 212, 0.04);
      --card-hover-shadow: 0 20px 30px -5px rgba(0, 82, 212, 0.12), 0 10px 15px -5px rgba(0, 82, 212, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-xl: 32px;
      --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    a {
      text-decoration: none;
      color: inherit;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部通知与主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-card);
      transition: var(--transition-smooth);
    }

    .top-bar {
      background: var(--primary-dark);
      color: #94A3B8;
      font-size: 0.82rem;
      padding: 6px 0;
    }

    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-bar-tags {
      display: flex;
      gap: 16px;
      align-items: center;
    }

    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(0, 200, 151, 0.7);
      animation: pulse-ring 2s infinite;
      margin-right: 6px;
    }

    @keyframes pulse-ring {
      0% { box-shadow: 0 0 0 0 rgba(0, 200, 151, 0.7); }
      70% { box-shadow: 0 0 0 6px rgba(0, 200, 151, 0); }
      100% { box-shadow: 0 0 0 0 rgba(0, 200, 151, 0); }
    }

    .nav-main {
      padding: 16px 0;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }

    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--brand-blue), var(--brand-mid));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: bold;
      font-size: 1.1rem;
    }

    .nav-menu {
      display: flex;
      list-style: none;
      gap: 32px;
      align-items: center;
    }

    .nav-menu a {
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-muted);
      transition: var(--transition-smooth);
      position: relative;
    }

    .nav-menu a:hover {
      color: var(--brand-blue);
    }

    .nav-action-btn {
      display: inline-flex;
      align-items: center;
      background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-mid) 100%);
      color: #fff;
      padding: 10px 24px;
      border-radius: 9999px;
      font-weight: 600;
      font-size: 0.9rem;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 14px rgba(0, 82, 212, 0.25);
    }

    .nav-action-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 82, 212, 0.35);
    }

    /* 移动端菜单控制 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--primary-dark);
      margin: 5px 0;
      transition: var(--transition-smooth);
    }

    /* 通用组件 */
    .badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 14px;
      border-radius: 9999px;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    .badge-primary {
      background: rgba(0, 82, 212, 0.1);
      color: var(--brand-blue);
      border: 1px solid rgba(0, 82, 212, 0.2);
    }

    .badge-green {
      background: rgba(0, 200, 151, 0.12);
      color: #008765;
      border: 1px solid rgba(0, 200, 151, 0.3);
    }

    .badge-purple {
      background: rgba(123, 44, 191, 0.1);
      color: var(--accent-purple);
      border: 1px solid rgba(123, 44, 191, 0.2);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 30px;
      border-radius: 12px;
      font-weight: 600;
      font-size: 1rem;
      transition: var(--transition-smooth);
      cursor: pointer;
      border: none;
      gap: 8px;
    }

    .btn-gradient {
      background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-mid) 50%, var(--brand-light) 100%);
      color: #fff;
      box-shadow: 0 10px 20px -5px rgba(0, 82, 212, 0.35);
    }

    .btn-gradient:hover {
      transform: translateY(-3px);
      box-shadow: 0 15px 25px -5px rgba(0, 82, 212, 0.45);
    }

    .btn-outline {
      background: #FFFFFF;
      color: var(--text-main);
      border: 1px solid #CBD5E1;
    }

    .btn-outline:hover {
      background: var(--bg-light);
      border-color: #94A3B8;
      transform: translateY(-3px);
    }

    .section-spacing {
      padding: 90px 0;
    }

    .section-header {
      margin-bottom: 54px;
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-header h2 {
      font-size: 2.3rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      margin-top: 12px;
      margin-bottom: 16px;
    }

    .section-header p {
      font-size: 1.05rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 板块 1: 首屏视觉轮播对比区 (Hero) */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(67, 100, 247, 0.08) 0%, rgba(255, 255, 255, 0) 70%), linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
      padding: 80px 0 100px;
      position: relative;
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 3.1rem;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -1px;
      color: var(--primary-dark);
      margin-bottom: 24px;
    }

    .hero-content h1 span {
      background: linear-gradient(135deg, var(--brand-blue), var(--brand-mid));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.12rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.8;
      max-width: 620px;
    }

    .hero-btn-group {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .hero-meta-strip {
      display: flex;
      gap: 28px;
      padding-top: 24px;
      border-top: 1px solid var(--border-card);
    }

    .meta-item {
      display: flex;
      flex-direction: column;
    }

    .meta-val {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary-dark);
    }

    .meta-label {
      font-size: 0.85rem;
      color: var(--text-sub);
    }

    .hero-card-display {
      position: relative;
    }

    .hero-main-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-card);
      box-shadow: 0 25px 50px -12px rgba(11, 25, 44, 0.12);
      overflow: hidden;
      position: relative;
    }

    .hero-card-header {
      background: var(--primary-dark);
      padding: 16px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #fff;
    }

    .hero-card-body {
      padding: 24px;
    }

    .hero-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 20px;
      position: relative;
    }

    .hero-floating-pill {
      position: absolute;
      bottom: -15px;
      right: -15px;
      background: #FFFFFF;
      padding: 14px 22px;
      border-radius: var(--radius-lg);
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
      border: 1px solid var(--border-card);
      display: flex;
      align-items: center;
      gap: 14px;
      z-index: 2;
    }

    /* 板块 2: 品类入口与架构概览 (#about) */
    .overview-section {
      background-color: var(--bg-white);
    }

    .overview-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .overview-visual {
      position: relative;
    }

    .overview-visual img {
      border-radius: var(--radius-xl);
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-card);
    }

    .overview-list {
      display: flex;
      flex-direction: column;
      gap: 24px;
      margin-top: 32px;
    }

    .overview-card-row {
      display: flex;
      gap: 18px;
      background: var(--bg-light);
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-card);
      transition: var(--transition-smooth);
    }

    .overview-card-row:hover {
      background: #FFFFFF;
      box-shadow: var(--card-shadow);
      transform: translateX(6px);
    }

    .overview-card-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(0, 82, 212, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-blue);
      font-weight: bold;
      flex-shrink: 0;
    }

    /* 板块 3: 核心优势矩阵 (#advantages) */
    .advantages-section {
      background-color: var(--bg-light);
    }

    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .advantage-card {
      background: #FFFFFF;
      padding: 32px 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-card);
      box-shadow: var(--card-shadow);
      transition: var(--transition-smooth);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .advantage-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-hover-shadow);
      border-color: rgba(67, 100, 247, 0.4);
    }

    .adv-badge-box {
      margin-bottom: 20px;
    }

    .advantage-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }

    .advantage-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .adv-metric-tag {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--brand-blue);
      background: rgba(0, 82, 212, 0.05);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    /* 板块 4: 产品线对比 (#products) */
    .products-section {
      background-color: var(--bg-white);
    }

    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .product-box {
      border-radius: var(--radius-xl);
      background: #FFFFFF;
      border: 1px solid var(--border-card);
      padding: 36px 30px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition-smooth);
    }

    .product-box.featured {
      border-color: var(--brand-mid);
      box-shadow: 0 20px 40px -10px rgba(67, 100, 247, 0.2);
      background: linear-gradient(180deg, #FFFFFF 0%, rgba(240, 244, 255, 0.6) 100%);
    }

    .product-box:hover {
      transform: translateY(-6px);
    }

    .product-type {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--primary-dark);
      margin: 14px 0 8px;
    }

    .product-desc {
      font-size: 0.95rem;
      color: var(--text-sub);
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .product-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }

    .product-features li {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .product-features li::before {
      content: "✓";
      color: var(--accent-green);
      font-weight: 800;
    }

    /* 板块 5: 全域治理理念与深色架构 (#philosophy) */
    .philosophy-section {
      background-color: var(--deep-bg);
      color: #FFFFFF;
      border-radius: var(--radius-xl);
      margin: 40px 24px;
      padding: 90px 40px;
    }

    .philosophy-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .philosophy-info h2 {
      font-size: 2.3rem;
      font-weight: 800;
      margin-bottom: 20px;
      line-height: 1.3;
      color: #FFFFFF;
    }

    .philosophy-info p {
      font-size: 1.05rem;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 30px;
    }

    .philosophy-checklist {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .phil-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 16px 20px;
      border-radius: var(--radius-md);
    }

    .phil-card h4 {
      font-size: 1.05rem;
      color: var(--brand-light);
      margin-bottom: 6px;
    }

    .phil-card p {
      font-size: 0.85rem;
      color: #CBD5E1;
      margin: 0;
      line-height: 1.5;
    }

    .philosophy-visual img {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }

    /* 板块 6: 数字化客户故事 (#cases) */
    .cases-section {
      background-color: var(--bg-light);
    }

    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-card);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }

    .case-card-img {
      height: 240px;
      overflow: hidden;
    }

    .case-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition-smooth);
    }

    .case-card:hover .case-card-img img {
      transform: scale(1.05);
    }

    .case-card-body {
      padding: 32px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-card-body h3 {
      font-size: 1.35rem;
      color: var(--primary-dark);
      margin-top: 10px;
      margin-bottom: 12px;
    }

    .case-card-body p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .case-stats {
      display: flex;
      gap: 24px;
      padding-top: 18px;
      border-top: 1px solid var(--border-card);
    }

    .case-stat-num {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--brand-blue);
    }

    .case-stat-name {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 板块 7: 全球业务数据统计条 (#metrics) */
    .metrics-section {
      background: linear-gradient(135deg, #0B192C 0%, #152A4A 100%);
      color: #fff;
      padding: 70px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }

    .metric-counter-box {
      padding: 10px;
    }

    .metric-num {
      font-size: 3rem;
      font-weight: 800;
      background: linear-gradient(135deg, #FFFFFF, var(--brand-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
      letter-spacing: -1px;
    }

    .metric-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #E2E8F0;
      margin-bottom: 6px;
    }

    .metric-desc {
      font-size: 0.85rem;
      color: #94A3B8;
    }

    /* 板块 8: 决策者口碑与评价墙 (#testimonials) */
    .testimonials-section {
      background-color: var(--bg-white);
    }

    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testimonial-card {
      background: var(--bg-light);
      padding: 32px 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-card);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition-smooth);
    }

    .testimonial-card:hover {
      background: #FFFFFF;
      box-shadow: var(--card-hover-shadow);
      transform: translateY(-4px);
    }

    .t-quote {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
      font-style: italic;
    }

    .t-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .t-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--brand-blue);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.1rem;
    }

    .t-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--primary-dark);
    }

    .t-role {
      font-size: 0.82rem;
      color: var(--text-sub);
    }

    /* 板块 9: 全球门户分析洞察资讯 (#insights) */
    .insights-section{
      background-color: var(--bg-light);
    }

    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .insight-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-card);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      transition: var(--transition-smooth);
    }

    .insight-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-hover-shadow);
    }

    .insight-img {
      height: 200px;
      overflow: hidden;
    }

    .insight-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition-smooth);
    }

    .insight-card:hover .insight-img img {
      transform: scale(1.06);
    }

    .insight-content {
      padding: 26px 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .insight-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 14px;
      font-size: 0.82rem;
      color: var(--text-sub);
    }

    .insight-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
      line-height: 1.45;
    }

    .insight-summary {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .insight-link {
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--brand-blue);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块 10: 多维门户分析解决方案流程 (#workflow) */
    .workflow-section {
      background-color: var(--bg-white);
    }

    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .workflow-card {
      background: var(--bg-light);
      padding: 30px 22px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-card);
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .step-badge {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--brand-blue), var(--brand-mid));
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 20px;
    }

    .workflow-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }

    .workflow-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 11: 全球生态合规与合作伙伴矩阵 (#partners) */
    .partners-section {
      background-color: var(--bg-light);
    }

    .partners-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 20px;
    }

    .partner-item {
      background: #FFFFFF;
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px 16px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      transition: var(--transition-smooth);
    }

    .partner-item:hover {
      box-shadow: var(--card-shadow);
      border-color: var(--brand-mid);
      transform: translateY(-3px);
    }

    .partner-icon-slot {
      font-size: 1.4rem;
      margin-bottom: 10px;
      color: var(--brand-blue);
      font-weight: 800;
    }

    .partner-name {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }

    .partner-role {
      font-size: 0.75rem;
      color: var(--text-sub);
    }

    /* 板块 12: 国际企业门户分析常见问答 (#faq) */
    .faq-section {
      background-color: var(--bg-white);
    }

    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      background: var(--bg-light);
      overflow: hidden;
      transition: var(--transition-smooth);
    }

    .faq-header {
      width: 100%;
      padding: 22px 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: none;
      border: none;
      cursor: pointer;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary-dark);
      text-align: left;
    }

    .faq-header:focus {
      outline: 2px solid var(--brand-blue);
    }

    .faq-arrow {
      width: 14px;
      height: 14px;
      border-right: 2px solid var(--text-sub);
      border-bottom: 2px solid var(--text-sub);
      transform: rotate(45deg);
      transition: transform 0.3s ease;
      flex-shrink: 0;
      margin-left: 16px;
    }

    .faq-item.active .faq-arrow {
      transform: rotate(-135deg);
    }

    .faq-item.active {
      background: #FFFFFF;
      box-shadow: var(--card-shadow);
      border-color: rgba(67, 100, 247, 0.3);
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 26px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
    }

    .faq-item.active .faq-content {
      max-height: 240px;
      padding: 0 26px 24px;
    }

    /* 板块 13: 全球业务咨询与演示预约 (#contact) */
    .contact-section {
      background-color: var(--bg-light);
    }

    .contact-box {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-card);
      box-shadow: 0 20px 40px -15px rgba(0, 82, 212, 0.1);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
    }

    .contact-info-side {
      background: linear-gradient(135deg, var(--primary-dark) 0%, #17263c 100%);
      color: #fff;
      padding: 50px 40px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-side h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .contact-info-side p {
      color: #94A3B8;
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 30px;
    }

    .contact-details-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .contact-detail-row {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .contact-detail-icon {
      width: 32px;
      height: 32px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--brand-light);
      flex-shrink: 0;
    }

    .contact-detail-txt strong {
      display: block;
      color: #FFFFFF;
      font-size: 0.95rem;
      margin-bottom: 2px;
    }

    .contact-detail-txt span {
      color: #94A3B8;
      font-size: 0.85rem;
    }

    .contact-form-side {
      padding: 50px 44px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group-full {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #FFFFFF;
      transition: var(--transition-smooth);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--brand-blue);
      box-shadow: 0 0 0 3px rgba(0, 82, 212, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 页脚 */
    .site-footer {
      background: var(--primary-dark);
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-brand h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.7;
      margin-bottom: 20px;
      color: #94A3B8;
    }

    .footer-col h5 {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-col a {
      font-size: 0.88rem;
      color: #94A3B8;
      transition: var(--transition-smooth);
    }

    .footer-col a:hover {
      color: var(--brand-light);
    }

    .footer-bottom {
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 移动端抽屉导航覆盖 */
    @media (max-width: 1024px) {
      .hero-grid,
      .overview-layout,
      .philosophy-grid,
      .contact-box {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .advantages-grid,
      .products-grid,
      .testimonials-grid,
      .insights-grid {
        grid-template-columns: 1fr 1fr;
      }
      .workflow-grid {
        grid-template-columns: 1fr 1fr;
      }
      .metrics-grid {
        grid-template-columns: 1fr 1fr;
      }
      .partners-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 69px;
        left: 0;
        width: 100%;
        height: calc(100vh - 69px);
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 30px 24px;
        gap: 20px;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }
      .nav-menu.open {
        transform: translateX(0);
      }
      .nav-action-btn {
        display: none;
      }
      .hero-content h1 {
        font-size: 2.2rem;
      }
      .advantages-grid,
      .products-grid,
      .testimonials-grid,
      .insights-grid,
      .cases-grid,
      .workflow-grid,
      .metrics-grid,
      .partners-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .contact-info-side,
      .contact-form-side {
        padding: 32px 20px;
      }
      .philosophy-section {
        margin: 20px 10px;
        padding: 50px 20px;
      }
      .philosophy-checklist {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }