/* roulang page: index */
:root {
      --bms-primary: #111827;
      --bms-secondary: #1E293B;
      --bms-text-main: #0F172A;
      --bms-text-muted: #475569;
      --bms-accent: #0D9488;
      --bms-accent-hover: #0F766E;
      --bms-accent-light: #F0FDFA;
      --bms-warning: #D97706;
      --bms-bg-light: #F8FAFC;
      --bms-bg-card: #FFFFFF;
      --bms-bg-dark: #0B0F17;
      --bms-border: #E2E8F0;
      --bms-border-dark: #1E293B;
      --bms-radius: 6px;
      --bms-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
      --bms-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --bms-transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--bms-text-main);
      background-color: var(--bms-bg-light);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      padding-bottom: 72px;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }

    .tabular {
      font-variant-numeric: tabular-nums;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部双行导航 */
    .top-utility-bar {
      height: 38px;
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--bms-border);
      font-size: 0.8125rem;
      color: var(--bms-text-muted);
      display: flex;
      align-items: center;
    }

    .top-utility-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .top-utility-tags {
      display: flex;
      gap: 16px;
    }

    .top-utility-tags span {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--bms-border);
      height: 72px;
      display: flex;
      align-items: center;
    }

    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 1.18rem;
      color: var(--bms-primary);
      letter-spacing: -0.01em;
    }

    .logo-badge {
      background-color: var(--bms-primary);
      color: #FFF;
      padding: 3px 8px;
      border-radius: var(--bms-radius);
      font-size: 0.75rem;
      font-weight: 800;
      letter-spacing: 0.05em;
    }

    .main-nav {
      display: flex;
      gap: 28px;
      align-items: center;
    }

    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--bms-secondary);
      position: relative;
      padding: 6px 0;
    }

    .nav-link:hover {
      color: var(--bms-accent);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--bms-accent);
      transition: var(--bms-transition);
    }

    .nav-link:hover::after {
      width: 100%;
    }

    .header-cta {
      background-color: var(--bms-accent);
      color: #FFF;
      padding: 9px 18px;
      border-radius: var(--bms-radius);
      font-size: 0.875rem;
      font-weight: 600;
      border: 1px solid var(--bms-accent);
    }

    .header-cta:hover {
      background-color: var(--bms-accent-hover);
      color: #FFF;
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--bms-primary);
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: var(--bms-radius);
      font-size: 0.9375rem;
      font-weight: 600;
      cursor: pointer;
      transition: var(--bms-transition);
      border: 1px solid transparent;
      line-height: 1.2;
    }

    .btn-primary {
      background-color: var(--bms-accent);
      color: #FFF;
      border-color: var(--bms-accent);
    }

    .btn-primary:hover {
      background-color: var(--bms-accent-hover);
      color: #FFF;
      transform: translateY(-2px);
      box-shadow: var(--bms-shadow-md);
    }

    .btn-outline {
      background-color: transparent;
      color: var(--bms-primary);
      border-color: var(--bms-border);
    }

    .btn-outline:hover {
      background-color: #F1F5F9;
      border-color: #CBD5E1;
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 8px 14px;
      font-size: 0.8125rem;
    }

    /* 章节通用 */
    .section {
      padding: 76px 0;
      position: relative;
    }

    .section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--bms-border);
      border-bottom: 1px solid var(--bms-border);
    }

    .section-dark {
      background-color: var(--bms-bg-dark);
      color: #F8FAFC;
      border-top: 1px solid var(--bms-border-dark);
      border-bottom: 1px solid var(--bms-border-dark);
    }

    .section-header {
      margin-bottom: 44px;
    }

    .section-header.center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--bms-accent);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 10px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      line-height: 1.25;
      color: var(--bms-primary);
      margin-bottom: 14px;
    }

    .section-dark .section-title {
      color: #F8FAFC;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--bms-text-muted);
      line-height: 1.65;
    }

    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 板块 1: 全宽浅色矮横幅 Hero */
    .hero-section {
      padding: 56px 0 64px 0;
      background: linear-gradient(180deg, #F8FAFC 0%, #EDF2F7 100%);
      border-bottom: 1px solid var(--bms-border);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-badge-row {
      display: flex;
      gap: 10px;
      margin-bottom: 16px;
    }

    .hero-badge {
      background-color: var(--bms-accent-light);
      color: var(--bms-accent);
      border: 1px solid #CCFBF1;
      padding: 4px 10px;
      border-radius: var(--bms-radius);
      font-size: 0.8125rem;
      font-weight: 600;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.02em;
      color: var(--bms-primary);
      margin-bottom: 20px;
    }

    .hero-desc {
      font-size: 1.0625rem;
      color: var(--bms-text-muted);
      margin-bottom: 30px;
      line-height: 1.7;
      max-width: 620px;
    }

    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-bottom: 32px;
    }

    .hero-spec-strip {
      display: flex;
      gap: 24px;
      border-top: 1px solid #CBD5E1;
      padding-top: 20px;
    }

    .hero-spec-item {
      display: flex;
      flex-direction: column;
    }

    .hero-spec-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--bms-primary);
    }

    .hero-spec-label {
      font-size: 0.75rem;
      color: var(--bms-text-muted);
    }

    .hero-visual-card {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      overflow: hidden;
      box-shadow: var(--bms-shadow-md);
    }

    .hero-img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    .hero-card-meta {
      padding: 16px 20px;
      background: #FFFFFF;
      border-top: 1px solid var(--bms-border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
    }

    /* 板块 2: 卖点三连 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .matrix-card {
      background: var(--bms-bg-card);
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      padding: 32px 24px;
      box-shadow: var(--bms-shadow);
      transition: var(--bms-transition);
    }

    .matrix-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--bms-shadow-md);
      border-color: var(--bms-accent);
    }

    .matrix-code {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--bms-accent);
      margin-bottom: 12px;
    }

    .matrix-card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--bms-primary);
      margin-bottom: 12px;
    }

    .matrix-card-desc {
      font-size: 0.9375rem;
      color: var(--bms-text-muted);
      line-height: 1.6;
    }

    /* 板块 3: 工程实力与产线介绍 */
    .profile-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .profile-img-wrap {
      border-radius: var(--bms-radius);
      overflow: hidden;
      border: 1px solid var(--bms-border);
      box-shadow: var(--bms-shadow-md);
    }

    .profile-img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .profile-content h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--bms-primary);
    }

    .profile-specs-list {
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .profile-spec-box {
      background: #F1F5F9;
      border-radius: var(--bms-radius);
      padding: 14px 16px;
    }

    .profile-spec-num {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--bms-accent);
      margin-bottom: 4px;
    }

    .profile-spec-text {
      font-size: 0.8125rem;
      color: var(--bms-text-muted);
    }

    /* 板块 4: 场景演示矩阵 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scenario-card {
      background: var(--bms-bg-card);
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--bms-shadow);
      transition: var(--bms-transition);
    }

    .scenario-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--bms-shadow-md);
    }

    .scenario-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }

    .scenario-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .scenario-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--bms-primary);
      margin-bottom: 10px;
    }

    .scenario-desc {
      font-size: 0.9rem;
      color: var(--bms-text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
      flex: 1;
    }

    .scenario-param-tag {
      background: #F1F5F9;
      padding: 8px 12px;
      border-radius: var(--bms-radius);
      font-size: 0.8125rem;
      color: var(--bms-secondary);
      border-left: 3px solid var(--bms-accent);
    }

    /* 板块 5: 核心优势 6 网格 */
    .benefits-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .benefit-item {
      background: var(--bms-bg-card);
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      padding: 26px;
      transition: var(--bms-transition);
    }

    .benefit-item:hover {
      border-color: #94A3B8;
      box-shadow: var(--bms-shadow);
    }

    .benefit-icon-badge {
      width: 38px;
      height: 38px;
      background: var(--bms-accent-light);
      color: var(--bms-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--bms-radius);
      font-weight: 800;
      font-size: 0.9rem;
      margin-bottom: 16px;
    }

    .benefit-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--bms-primary);
      margin-bottom: 8px;
    }

    .benefit-desc {
      font-size: 0.875rem;
      color: var(--bms-text-muted);
      line-height: 1.6;
    }

    /* 板块 6: 热门主力产品 3 卡片展台 */
    .product-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .product-card {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      padding: 28px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--bms-shadow);
      position: relative;
    }

    .product-card.highlight {
      border-color: var(--bms-accent);
      box-shadow: 0 8px 24px -4px rgba(13, 148, 136, 0.12);
    }

    .product-tag-float {
      position: absolute;
      top: 16px;
      right: 16px;
      background: var(--bms-accent);
      color: #FFF;
      font-size: 0.6875rem;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 700;
    }

    .product-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--bms-primary);
      margin-bottom: 8px;
    }

    .product-subtitle {
      font-size: 0.875rem;
      color: var(--bms-text-muted);
      margin-bottom: 20px;
    }

    .product-spec-table {
      width: 100%;
      margin-bottom: 24px;
      font-size: 0.8125rem;
      border-collapse: collapse;
    }

    .product-spec-table tr {
      border-bottom: 1px solid #F1F5F9;
    }

    .product-spec-table td {
      padding: 10px 0;
    }

    .product-spec-table td:first-child {
      color: var(--bms-text-muted);
      width: 45%;
    }

    .product-spec-table td:last-child {
      color: var(--bms-primary);
      font-weight: 600;
      text-align: right;
    }

    .product-actions {
      margin-top: auto;
    }

    /* 板块 7: 硬核数据条 */
    .metrics-strip {
      background: #0D131F;
      padding: 48px 0;
      border-top: 1px solid #1F2937;
      border-bottom: 1px solid #1F2937;
      color: #FFF;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .metric-value {
      font-size: 2.375rem;
      font-weight: 800;
      color: var(--bms-accent);
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 0.875rem;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 板块 8: 深色技术架构 */
    .arch-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 36px;
    }

    .arch-card {
      background: #111827;
      border: 1px solid #1F2937;
      border-radius: var(--bms-radius);
      padding: 28px;
    }

    .arch-level {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--bms-accent);
      letter-spacing: 0.05em;
      margin-bottom: 8px;
    }

    .arch-title {
      font-size: 1.18rem;
      color: #F8FAFC;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .arch-desc {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.65;
    }

    /* 板块 9: 落地案例 */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      overflow: hidden;
      box-shadow: var(--bms-shadow);
    }

    .case-img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }

    .case-content {
      padding: 28px;
    }

    .case-meta-tag {
      display: inline-block;
      padding: 3px 8px;
      background: #F1F5F9;
      color: var(--bms-secondary);
      font-size: 0.75rem;
      font-weight: 600;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    .case-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--bms-primary);
      margin-bottom: 12px;
    }

    .case-desc {
      font-size: 0.9rem;
      color: var(--bms-text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }

    .case-quote {
      background: #F8FAFC;
      border-left: 3px solid var(--bms-accent);
      padding: 12px 16px;
      font-size: 0.8125rem;
      color: var(--bms-secondary);
      font-style: italic;
    }

    /* 板块 10: 对比矩阵 */
    .comparison-table-wrapper {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      overflow-x: auto;
      box-shadow: var(--bms-shadow);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--bms-border);
      font-size: 0.9rem;
    }

    .comparison-table th {
      background: #F8FAFC;
      font-weight: 700;
      color: var(--bms-primary);
    }

    .comparison-table th.highlight, .comparison-table td.highlight {
      background: #F0FDFA;
      color: var(--bms-accent-hover);
      font-weight: 600;
    }

    /* 板块 11: 资讯与白皮书 */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      padding: 24px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--bms-shadow);
    }

    .article-date {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-bottom: 10px;
    }

    .article-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--bms-primary);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .article-snippet {
      font-size: 0.875rem;
      color: var(--bms-text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      flex: 1;
    }

    .article-link {
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--bms-accent);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 12: FAQ 手风琴 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      overflow: hidden;
      transition: var(--bms-transition);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--bms-primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--bms-accent);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #F8FAFC;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      max-height: 240px;
      border-top-color: var(--bms-border);
    }

    .faq-answer-inner {
      padding: 20px 24px;
      font-size: 0.9375rem;
      color: var(--bms-text-muted);
      line-height: 1.65;
    }

    /* 板块 13: 保障承诺与咨询表单 */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 48px;
    }

    .guarantee-box {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      padding: 24px;
      text-align: center;
    }

    .guarantee-box h4 {
      font-size: 1.1rem;
      color: var(--bms-primary);
      margin-bottom: 6px;
    }

    .guarantee-box p {
      font-size: 0.8125rem;
      color: var(--bms-text-muted);
    }

    .cta-card {
      background: #FFFFFF;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      padding: 40px;
      box-shadow: var(--bms-shadow-md);
      max-width: 860px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 24px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group.full {
      grid-column: span 2;
    }

    .form-label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--bms-primary);
    }

    .form-input, .form-select, .form-textarea {
      padding: 10px 14px;
      border: 1px solid var(--bms-border);
      border-radius: var(--bms-radius);
      background: #FFFFFF;
      color: var(--bms-primary);
      font-size: 0.9375rem;
      outline: none;
      transition: var(--bms-transition);
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--bms-accent);
      box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
    }

    /* 底部固定转化条 */
    .sticky-bottom-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 40;
      background: rgba(17, 24, 39, 0.96);
      backdrop-filter: blur(8px);
      border-top: 1px solid #374151;
      padding: 12px 0;
      color: #FFF;
    }

    .sticky-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .sticky-text {
      font-size: 0.9375rem;
      color: #E2E8F0;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .sticky-status-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10B981;
    }

    .sticky-actions {
      display: flex;
      gap: 12px;
    }

    /* 页脚 */
    .site-footer {
      background: #0B0F17;
      color: #94A3B8;
      padding: 56px 0 28px 0;
      border-top: 1px solid #1E293B;
      font-size: 0.875rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand {
      color: #FFF;
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .footer-desc {
      line-height: 1.6;
      margin-bottom: 16px;
      font-size: 0.8125rem;
    }

    .footer-heading {
      color: #FFF;
      font-size: 0.9375rem;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a:hover {
      color: #FFF;
    }

    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.75rem;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      right: 0;
      bottom: 0;
      background: #FFFFFF;
      z-index: 49;
      padding: 24px;
      flex-direction: column;
      gap: 16px;
      border-top: 1px solid var(--bms-border);
      box-shadow: var(--bms-shadow-md);
    }

    .mobile-drawer.open {
      display: flex;
    }

    .mobile-nav-link {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--bms-primary);
      padding: 10px 0;
      border-bottom: 1px solid #F1F5F9;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid, .profile-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .matrix-grid, .scenario-grid, .benefits-grid, .product-cards-grid, .arch-grid, .article-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-utility-bar {
        display: none;
      }
      .main-nav, .header-cta {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.625rem;
      }
      .matrix-grid, .scenario-grid, .benefits-grid, .product-cards-grid, .arch-grid, .case-grid, .article-grid, .guarantee-bar {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .sticky-inner {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }