/* roulang page: index */
:root {
      --color-brand-deep: #0D2538;
      --color-brand-dark: #0B1926;
      --color-accent: #0EA5E9;
      --color-accent-emerald: #10B981;
      --color-amber: #F59E0B;
      --color-text-main: #1E293B;
      --color-text-muted: #64748B;
      --color-border: #E2E8F0;
      --color-bg-light: #F8FAFC;
      --color-bg-gray: #EEF2F6;
      --color-white: #FFFFFF;
      --shadow-sm: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 12px 28px -4px rgba(14, 165, 233, 0.15);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      color: var(--color-text-main);
      background-color: var(--color-bg-light);
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .top-bar {
      background: var(--color-brand-dark);
      color: #94A3B8;
      font-size: 12px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .top-bar-notice {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .top-bar-badge {
      background: rgba(16, 185, 129, 0.2);
      color: var(--color-accent-emerald);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    .header-main {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--color-border);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    }
    .header-main .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--color-brand-deep);
    }
    .nav-logo-mark {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--color-accent), var(--color-accent-emerald));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      font-weight: 800;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-weight: 500;
      color: #334155;
      font-size: 15px;
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--color-accent);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--color-accent);
      transition: var(--transition);
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }
    .nav-btn {
      background: var(--color-brand-deep);
      color: #fff;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .nav-btn:hover {
      background: var(--color-accent);
      box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 13px 26px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      gap: 8px;
    }
    .btn:active {
      transform: translateY(1px);
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--color-accent), #0284C7);
      color: #fff;
      box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
    }
    .btn-primary:hover {
      box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
      transform: translateY(-2px);
    }
    .btn-outline-light {
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.3);
    }
    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.2);
      border-color: #fff;
    }

    /* 区域标题通用 */
    .section-head {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 50px;
    }
    .section-head .tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      margin-bottom: 12px;
      background: rgba(14, 165, 233, 0.1);
      color: var(--color-accent);
      border: 1px solid rgba(14, 165, 233, 0.2);
    }
    .section-head h2 {
      font-size: 32px;
      color: var(--color-brand-deep);
      line-height: 1.4;
      margin-bottom: 16px;
    }
    .section-head p {
      font-size: 16px;
      color: var(--color-text-muted);
      line-height: 1.8;
    }

    /* 板块一：首屏 Hero */
    .hero-section {
      position: relative;
      background: linear-gradient(rgba(13, 37, 56, 0.88), rgba(11, 25, 38, 0.94)),
                  url('/assets/images/f4b9fc6825e0143d.webp') center/cover no-repeat;
      padding: 90px 0 100px;
      color: #fff;
      overflow: hidden;
    }
    .hero-badge-float {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(245, 158, 11, 0.15);
      border: 1px solid var(--color-amber);
      color: #FCD34D;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-title {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 24px;
      letter-spacing: -0.02em;
    }
    .hero-desc {
      font-size: 17px;
      color: #CBD5E1;
      line-height: 1.85;
      margin-bottom: 34px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 30px;
      backdrop-filter: blur(12px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
    }
    .hero-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 15px;
      margin-bottom: 20px;
    }
    .hero-card-status {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--color-accent-emerald);
      font-size: 13px;
      font-weight: 600;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-accent-emerald);
      box-shadow: 0 0 8px var(--color-accent-emerald);
    }
    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 20px;
    }
    .hero-stat-box {
      background: rgba(0, 0, 0, 0.25);
      padding: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .hero-stat-num {
      font-size: 24px;
      font-weight: 700;
      color: #38BDF8;
      font-family: monospace;
    }
    .hero-stat-label {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 4px;
    }

    /* 板块二：产品图谱与架构 */
    .section-intro {
      padding: 90px 0;
      background: var(--color-white);
    }
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .intro-img-wrap {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-border);
    }
    .intro-content h3 {
      font-size: 28px;
      color: var(--color-brand-deep);
      margin-bottom: 20px;
      line-height: 1.4;
    }
    .intro-content p {
      color: var(--color-text-muted);
      margin-bottom: 24px;
      font-size: 15px;
    }
    .intro-spec-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 20px;
    }
    .intro-spec-item {
      background: var(--color-bg-light);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--color-accent);
      font-size: 13px;
      color: var(--color-brand-deep);
      font-weight: 500;
    }

    /* 板块三：核心能力集群 3x2 网格 */
    .section-features {
      padding: 90px 0;
      background: var(--color-bg-gray);
    }
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: var(--color-white);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-border);
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--color-accent);
    }
    .feature-tag-top {
      align-self: flex-start;
      font-size: 11px;
      font-weight: 700;
      color: var(--color-accent);
      background: rgba(14, 165, 233, 0.08);
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 16px;
    }
    .feature-card h4 {
      font-size: 19px;
      color: var(--color-brand-deep);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.7;
      flex-grow: 1;
    }

    /* 板块四：三大应用场景产品矩阵 */
    .section-products {
      padding: 90px 0;
      background: var(--color-white);
    }
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-box {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--color-white);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .product-box:hover {
      box-shadow: var(--shadow-hover);
    }
    .product-img {
      height: 200px;
      position: relative;
      overflow: hidden;
    }
    .product-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .product-box:hover .product-img img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 26px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .product-target {
      font-size: 12px;
      color: var(--color-amber);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .product-body h4 {
      font-size: 20px;
      color: var(--color-brand-deep);
      margin-bottom: 12px;
    }
    .product-body p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .product-btn-anchor {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-accent);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .product-btn-anchor:hover {
      color: #0284C7;
      gap: 9px;
    }

    /* 板块五：深色容灾治理区 */
    .section-architecture {
      background: var(--color-brand-dark);
      color: #fff;
      padding: 95px 0;
    }
    .section-architecture .section-head h2 {
      color: #fff;
    }
    .section-architecture .section-head p {
      color: #94A3B8;
    }
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .code-console {
      background: #060E17;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 24px;
      font-family: Consolas, Monaco, "Courier New", monospace;
      font-size: 13px;
      line-height: 1.6;
      color: #38BDF8;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    }
    .code-line {
      display: block;
      margin-bottom: 6px;
    }
    .code-comment { color: #64748B; }
    .code-keyword { color: #F472B6; }
    .code-str { color: #34D399; }
    .arch-specs {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .arch-spec-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px 24px;
      border-radius: var(--radius-sm);
    }
    .arch-spec-card h5 {
      font-size: 17px;
      color: #F8FAFC;
      margin-bottom: 8px;
    }
    .arch-spec-card p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块六：业务落地实践故事 */
    .section-cases {
      padding: 90px 0;
      background: var(--color-bg-light);
    }
    .case-timeline-card {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .case-stages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      margin-top: 30px;
      position: relative;
    }
    .case-stage-item {
      position: relative;
      padding-top: 24px;
      border-top: 3px solid var(--color-accent);
    }
    .stage-time {
      font-size: 12px;
      font-weight: 700;
      color: var(--color-accent);
      margin-bottom: 6px;
    }
    .case-stage-item h4 {
      font-size: 18px;
      color: var(--color-brand-deep);
      margin-bottom: 10px;
    }
    .case-stage-item p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.7;
    }

    /* 板块七：核心效能指标带 */
    .section-kpi {
      background: linear-gradient(135deg, var(--color-brand-deep), #1E3A5F);
      color: #fff;
      padding: 60px 0;
    }
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .kpi-item {
      padding: 10px 20px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .kpi-item:last-child {
      border-right: none;
    }
    .kpi-value {
      font-size: 42px;
      font-weight: 800;
      font-family: monospace;
      color: #38BDF8;
      margin-bottom: 6px;
    }
    .kpi-label {
      font-size: 15px;
      color: #E2E8F0;
      font-weight: 600;
      margin-bottom: 4px;
    }
    .kpi-sub {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 板块八：客户评价与合规背书墙 */
    .section-testimonials {
      padding: 90px 0;
      background: var(--color-white);
    }
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: var(--color-bg-light);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 14px;
      color: #334155;
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--color-border);
      padding-top: 16px;
    }
    .author-avatar-text {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--color-accent);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .author-info h5 {
      font-size: 15px;
      color: var(--color-brand-deep);
    }
    .author-info span {
      font-size: 12px;
      color: var(--color-text-muted);
    }

    /* 板块九：前沿资讯与动态 */
    .section-news {
      padding: 90px 0;
      background: var(--color-bg-gray);
    }
    .news-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 30px;
    }
    .news-featured {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-featured-img {
      height: 240px;
      overflow: hidden;
    }
    .news-featured-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-featured-content {
      padding: 28px;
      flex-grow: 1;
    }
    .news-tag {
      font-size: 11px;
      color: var(--color-accent-emerald);
      background: rgba(16, 185, 129, 0.1);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 700;
      display: inline-block;
      margin-bottom: 10px;
    }
    .news-featured-content h4 {
      font-size: 20px;
      color: var(--color-brand-deep);
      margin-bottom: 12px;
    }
    .news-featured-content p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.7;
    }
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .news-list-item {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: var(--transition);
    }
    .news-list-item:hover {
      border-color: var(--color-accent);
      transform: translateX(4px);
    }
    .news-list-item h5 {
      font-size: 16px;
      color: var(--color-brand-deep);
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .news-list-item p {
      font-size: 13px;
      color: var(--color-text-muted);
      line-height: 1.6;
    }

    /* 板块十：FAQ 手风琴 */
    .section-faq {
      padding: 90px 0;
      background: var(--color-white);
    }
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: var(--color-bg-light);
    }
    .faq-checkbox {
      display: none;
    }
    .faq-trigger {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-brand-deep);
      user-select: none;
      transition: var(--transition);
    }
    .faq-trigger::after {
      content: '+';
      font-size: 20px;
      color: var(--color-accent);
      transition: transform 0.25s ease;
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      padding: 0 24px;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: var(--color-white);
      color: var(--color-text-muted);
      font-size: 14px;
      line-height: 1.8;
      border-top: 1px solid transparent;
    }
    .faq-checkbox:checked ~ .faq-trigger {
      background: var(--color-white);
      color: var(--color-accent);
    }
    .faq-checkbox:checked ~ .faq-trigger::after {
      content: '−';
      transform: rotate(180deg);
    }
    .faq-checkbox:checked ~ .faq-content {
      max-height: 300px;
      padding: 16px 24px 24px;
      border-color: var(--color-border);
    }

    /* 板块十一：安全合规 SLA 承诺条 */
    .section-sla {
      background: #08131F;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 40px 0;
      color: #fff;
    }
    .sla-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .sla-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .sla-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: rgba(14, 165, 233, 0.12);
      border: 1px solid rgba(14, 165, 233, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-accent);
      font-size: 18px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .sla-text h6 {
      font-size: 15px;
      color: #F8FAFC;
      margin-bottom: 2px;
    }
    .sla-text span {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 板块十二：底端转化引擎 */
    .section-cta {
      padding: 90px 0;
      background: linear-gradient(135deg, var(--color-brand-deep), #0B1926);
    }
    .cta-card {
      background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.15), transparent 50%), #0D2538;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 50px 60px;
      color: #fff;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 50px;
      align-items: center;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }
    .cta-info h3 {
      font-size: 32px;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .cta-info p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .cta-badges {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .cta-badge-item {
      font-size: 12px;
      background: rgba(255, 255, 255, 0.08);
      padding: 5px 12px;
      border-radius: 4px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .form-group-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .cta-form select, .cta-form input {
      width: 100%;
      padding: 12px 14px;
      background: #091724;
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .cta-form select:focus, .cta-form input:focus {
      border-color: var(--color-accent);
      box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.3);
    }
    .cta-submit-btn {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--color-accent), var(--color-accent-emerald));
      color: #fff;
      font-weight: 700;
      font-size: 15px;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      margin-top: 6px;
    }
    .cta-submit-btn:hover {
      opacity: 0.95;
      box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
    }

    /* 页脚 Footer */
    .site-footer {
      background: #060D14;
      color: #94A3B8;
      font-size: 13px;
      padding: 70px 0 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h5 {
      font-size: 15px;
      color: #F8FAFC;
      margin-bottom: 20px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--color-accent);
    }
    .footer-brand-title {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
    }

    /* 移动端汉堡菜单控制 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--color-brand-deep);
      cursor: pointer;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .products-grid { grid-template-columns: repeat(2, 1fr); }
      .case-stages-grid { grid-template-columns: 1fr; }
      .case-stage-item { border-top: none; border-left: 3px solid var(--color-accent); padding-top: 0; padding-left: 18px; }
      .kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
      .kpi-item { border-right: none; }
      .sla-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
      .cta-card { grid-template-columns: 1fr; padding: 40px 30px; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--color-border);
      }
      .nav-links.active { display: flex; }
      .nav-btn { display: none; }
      .intro-grid { grid-template-columns: 1fr; }
      .feature-grid { grid-template-columns: 1fr; }
      .products-grid { grid-template-columns: 1fr; }
      .arch-grid { grid-template-columns: 1fr; }
      .testi-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .sla-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .hero-title { font-size: 32px; }
      .section-head h2 { font-size: 26px; }
      .form-group-row { grid-template-columns: 1fr; }
      .hero-stats-row { grid-template-columns: 1fr; }
    }