/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0B3E8F;
      --primary-light: #EBF3FF;
      --accent: #00A86B;
      --warning: #F39C12;
      --dark-navy: #0A192F;
      --slate-dark: #0F172A;
      --text-main: #334155;
      --text-muted: #64748B;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.05), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 12px 28px -5px rgba(15, 82, 186, 0.12), 0 8px 10px -6px rgba(15, 82, 186, 0.06);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部通告与联系条 */
    .top-bar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-muted);
      padding: 6px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-tag {
      background-color: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 9999px;
      font-weight: 600;
    }
    .top-contact {
      display: flex;
      gap: 20px;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--slate-dark);
    }
    .logo-badge {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), #1E3A8A);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 900;
      font-size: 18px;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      gap: 8px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background-color: #ffffff;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-secondary:hover {
      background-color: var(--primary-light);
    }
    .btn-outline-white {
      background: transparent;
      color: #ffffff;
      border-color: rgba(255, 255, 255, 0.4);
    }
    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #ffffff;
    }
    .btn-success {
      background-color: var(--accent);
      color: #ffffff;
    }
    .btn-success:hover {
      background-color: #008f5a;
    }

    /* 通用板块与排版 */
    .section-spacing {
      padding: 80px 0;
      position: relative;
    }
    .section-spacing.bg-alt {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-spacing.dark-theme {
      background-color: var(--dark-navy);
      color: #E2E8F0;
      padding: 96px 0;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .dark-theme .section-tag {
      background: rgba(15, 82, 186, 0.3);
      color: #93C5FD;
    }
    .section-title {
      font-size: 32px;
      line-height: 1.3;
      color: var(--slate-dark);
      font-weight: 700;
      margin-bottom: 16px;
    }
    .dark-theme .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-muted);
    }
    .dark-theme .section-desc {
      color: #94A3B8;
    }

    /* 1. 首屏 (#hero) - 蓝图拼团转化版式与成团提示 */
    .hero-banner {
      background: linear-gradient(to bottom, #F1F5F9 0%, #F8FAFC 100%);
      padding: 70px 0 80px;
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--slate-dark);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-h1 span {
      color: var(--primary);
    }
    .hero-lead {
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-main);
      margin-bottom: 28px;
    }
    .hero-group-deal-bar {
      background: #FFFFFF;
      border: 1px solid #CBD5E1;
      border-left: 4px solid var(--primary);
      padding: 12px 18px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 28px;
      box-shadow: var(--shadow-sm);
    }
    .deal-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .deal-badge {
      background: #FEF3C7;
      color: #92400E;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
    }
    .deal-text {
      font-size: 14px;
      color: var(--slate-dark);
      font-weight: 600;
    }
    .hero-cta-group {
      display: flex;
      gap: 16px;
      margin-bottom: 32px;
      flex-wrap: wrap;
    }
    .hero-chips {
      display: flex;
      gap: 20px;
      font-size: 13px;
      color: var(--text-muted);
      border-top: 1px dashed #CBD5E1;
      padding-top: 18px;
    }
    .chip-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .chip-item::before {
      content: "✔";
      color: var(--accent);
      font-weight: bold;
    }
    .hero-media-card {
      position: relative;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 12px;
      border: 1px solid var(--border-color);
      box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.1);
    }
    .hero-media-card img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .hero-card-floating {
      position: absolute;
      bottom: 24px;
      left: -20px;
      background: rgba(15, 23, 42, 0.9);
      color: #FFFFFF;
      padding: 14px 20px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
      backdrop-filter: blur(8px);
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .floating-val {
      font-size: 20px;
      font-weight: 800;
      color: #60A5FA;
    }
    .floating-lbl {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 2. 架构体系 (#architecture) */
    .arch-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .arch-spec-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 24px;
      background: #FFFFFF;
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .arch-spec-table th, .arch-spec-table td {
      padding: 12px 16px;
      text-align: left;
      font-size: 14px;
      border-bottom: 1px solid var(--border-color);
    }
    .arch-spec-table th {
      background: #F1F5F9;
      color: var(--slate-dark);
      font-weight: 600;
    }

    /* 3. 六维核心优势 (#advantages) */
    .grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .advantage-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #BFDBFE;
    }
    .adv-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .adv-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 10px;
    }
    .adv-desc {
      font-size: 14px;
      line-height: 1.65;
      color: var(--text-muted);
    }

    /* 4. 产品发行版 (#editions) - 票种/套餐对比 */
    .editions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .edition-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .edition-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .edition-card.popular {
      border: 2px solid var(--primary);
      box-shadow: 0 10px 30px rgba(15, 82, 186, 0.15);
    }
    .popular-ribbon {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 9999px;
    }
    .ed-title {
      font-size: 22px;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 8px;
    }
    .ed-subtitle {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 38px;
    }
    .ed-meta-box {
      background: #F8FAFC;
      border: 1px solid #E2E8F0;
      border-radius: var(--radius-sm);
      padding: 12px;
      margin-bottom: 20px;
      font-size: 13px;
    }
    .ed-meta-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 4px;
    }
    .ed-meta-row:last-child {
      margin-bottom: 0;
    }
    .ed-features {
      list-style: none;
      margin-bottom: 30px;
      flex-grow: 1;
    }
    .ed-features li {
      font-size: 14px;
      color: var(--text-main);
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .ed-features li::before {
      content: "•";
      color: var(--primary);
      font-size: 18px;
    }

    /* 5. 深色技术理念区 (#philosophy) */
    .philosophy-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .code-console {
      background: #020C1B;
      border-radius: var(--radius-md);
      border: 1px solid #1E293B;
      overflow: hidden;
      font-family: monospace;
      font-size: 13px;
      box-shadow: 0 16px 30px rgba(0,0,0,0.4);
    }
    .console-header {
      background: #0F172A;
      padding: 10px 16px;
      display: flex;
      gap: 8px;
      border-bottom: 1px solid #1E293B;
    }
    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      display: inline-block;
    }
    .dot-red { background: #EF4444; }
    .dot-yellow { background: #F59E0B; }
    .dot-green { background: #10B981; }
    .console-body {
      padding: 20px;
      color: #94A3B8;
      line-height: 1.6;
    }
    .console-highlight {
      color: #38BDF8;
    }
    .console-success {
      color: #34D399;
    }

    /* 6. 场景落地展示 (#scenarios) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .scenario-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .scenario-thumb {
      height: 220px;
      overflow: hidden;
    }
    .scenario-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .scenario-card:hover .scenario-thumb img {
      transform: scale(1.05);
    }
    .scenario-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .sc-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 10px;
    }
    .sc-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .sc-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: auto;
    }
    .pill-tag {
      background: #F1F5F9;
      color: var(--slate-dark);
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 4px;
    }

    /* 7. 全链路实施案例 (#cases) */
    .case-container {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-visual {
      position: relative;
      min-height: 380px;
    }
    .case-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-details {
      padding: 48px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-subtitle {
      color: var(--primary);
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .case-title {
      font-size: 26px;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 16px;
    }
    .case-summary {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .case-stat-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }
    .case-stat-num {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .case-stat-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 8. 关键技术指标 (#metrics) */
    .metrics-section {
      background: linear-gradient(135deg, var(--slate-dark) 0%, #1E293B 100%);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-card {
      padding: 20px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .metric-card:last-child {
      border-right: none;
    }
    .metric-number {
      font-size: 44px;
      font-weight: 800;
      color: #38BDF8;
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-title {
      font-size: 15px;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 13px;
      color: #94A3B8;
    }

    /* 9. 客户评价与见证 (#testimonials) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-main);
      margin-bottom: 24px;
      position: relative;
    }
    .testi-user {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 18px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .testi-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--slate-dark);
    }
    .testi-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 10. 行业技术洞察 (#insights) */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .insight-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .insight-img {
      height: 170px;
      overflow: hidden;
    }
    .insight-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .insight-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .insight-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .insight-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .insight-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-top: auto;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 11. FAQ 手风琴 (#faq) */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item details summary {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--slate-dark);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-item details summary::-webkit-details-marker {
      display: none;
    }
    .faq-chevron {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item details[open] .faq-chevron {
      transform: rotate(180deg);
    }
    .faq-content {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px dashed var(--border-color);
      padding-top: 16px;
    }

    /* 12. 底部转化收口与保障条 (#bottom-cta) */
    .bottom-cta-box {
      background: linear-gradient(135deg, var(--primary) 0%, #09347A 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
      box-shadow: 0 20px 40px rgba(15, 82, 186, 0.25);
    }
    .cta-left h3 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .cta-left p {
      font-size: 15px;
      color: #DBEAFE;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .guarantee-badges {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .g-badge {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: #FFFFFF;
      background: rgba(255, 255, 255, 0.12);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
    }
    .cta-form-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 30px;
      color: var(--slate-dark);
      box-shadow: var(--shadow-sm);
    }
    .form-group {
      margin-bottom: 14px;
    }
    .form-group label {
      display: block;
      font-size: 12px;
      font-weight: 600;
      color: var(--slate-dark);
      margin-bottom: 6px;
    }
    .form-input {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
    }

    /* 浮动转化条 */
    .floating-bar {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(15, 23, 42, 0.95);
      border: 1px solid rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(12px);
      padding: 12px 28px;
      border-radius: 9999px;
      display: flex;
      align-items: center;
      gap: 24px;
      z-index: 990;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
      color: #FFFFFF;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }
    .floating-bar.active {
      opacity: 1;
      visibility: visible;
      bottom: 24px;
    }
    .float-text {
      font-size: 14px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--dark-navy);
      color: #94A3B8;
      padding: 60px 0 28px;
      border-top: 1px solid #1E293B;
      font-size: 14px;
      margin-top: auto;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-desc {
      font-size: 13px;
      line-height: 1.7;
      margin-bottom: 20px;
      color: #94A3B8;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
    }

    /* 移动端汉堡包适配 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--slate-dark);
      cursor: pointer;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-layout, .philosophy-grid, .case-container, .bottom-cta-box {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .grid-3x2, .editions-grid, .testimonial-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-card {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-contact {
        display: none;
      }
      .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-hover);
        display: none;
      }
      .main-nav.show {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .grid-3x2, .editions-grid, .scenario-grid, .testimonial-grid, .insights-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 30px;
      }
      .section-title {
        font-size: 26px;
      }
      .section-spacing {
        padding: 50px 0;
      }
      .case-stat-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .floating-bar {
        width: 90%;
        border-radius: var(--radius-md);
        justify-content: space-between;
        padding: 10px 16px;
      }
      .float-text {
        font-size: 12px;
      }
    }