:root {
      --primary-cyan: #0ea5e9;
      --primary-teal: #0d9488;
      --cyan-deep: #0f766e;
      --cyan-light: #f0fdfa;
      --cyan-soft-border: #ccfbf1;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #0d9488 100%);
      --accent-soft: rgba(14, 165, 233, 0.08);
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 20px -2px rgba(13, 148, 136, 0.08);
      --shadow-lg: 0 10px 30px -4px rgba(14, 165, 233, 0.12);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(13, 148, 136, 0.12);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      display: block;
    }

    .brand-text {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--cyan-deep);
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary-teal);
      background: var(--accent-soft);
    }

    .nav-cta-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--accent-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(13, 148, 136, 0.45);
      color: #ffffff;
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--cyan-deep);
      border-color: var(--cyan-soft-border);
    }

    .btn-secondary:hover {
      background: var(--cyan-light);
      border-color: var(--primary-teal);
    }

    .btn-lg {
      padding: 14px 34px;
      font-size: 1.05rem;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 首屏 Hero 区：严禁任何图片资源 */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.12) 0%, transparent 45%),
                  radial-gradient(circle at 20% 80%, rgba(13, 148, 136, 0.1) 0%, transparent 50%),
                  linear-gradient(180deg, #ffffff 0%, #f0fdfa 100%);
      padding: 90px 0 80px;
      border-bottom: 1px solid var(--cyan-soft-border);
      overflow: hidden;
    }

    .hero-wrap {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content {
      max-width: 660px;
    }

    .badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: rgba(13, 148, 136, 0.1);
      border: 1px solid rgba(13, 148, 136, 0.25);
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--cyan-deep);
      margin-bottom: 24px;
    }

    .badge-dot {
      width: 8px;
      height: 8px;
      background: var(--primary-teal);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary-teal);
    }

    .hero-title {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.22;
      color: var(--text-main);
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-title span {
      color: var(--primary-teal);
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 34px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-perks {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      border-top: 1px solid var(--cyan-soft-border);
      padding-top: 24px;
    }

    .perk-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    .perk-item svg {
      width: 18px;
      height: 18px;
      fill: var(--primary-teal);
      flex-shrink: 0;
    }

    /* 首屏纯CSS科技感面板（无任何图片） */
    .hero-visual-card {
      background: #ffffff;
      border: 1px solid var(--cyan-soft-border);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }

    .visual-top-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid #f1f5f9;
    }

    .visual-indicator {
      display: flex;
      gap: 6px;
    }

    .visual-indicator span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #cbd5e1;
    }

    .visual-indicator span:nth-child(1) { background: #38bdf8; }
    .visual-indicator span:nth-child(2) { background: #2dd4bf; }
    .visual-indicator span:nth-child(3) { background: #34d399; }

    .visual-badge {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--cyan-deep);
      background: var(--cyan-light);
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid var(--cyan-soft-border);
    }

    .matrix-display {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 24px;
    }

    .matrix-box {
      background: var(--cyan-light);
      border: 1px solid var(--cyan-soft-border);
      border-radius: var(--radius-md);
      padding: 16px;
      transition: all 0.3s ease;
    }

    .matrix-box:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    .matrix-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--cyan-deep);
      margin-bottom: 4px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .matrix-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .matrix-console {
      background: #0f172a;
      border-radius: var(--radius-md);
      padding: 18px;
      color: #e2e8f0;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.85rem;
      line-height: 1.6;
    }

    .console-line {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 6px;
    }

    .console-line:last-child {
      margin-bottom: 0;
    }

    .console-tag {
      color: #38bdf8;
    }

    .console-status {
      color: #34d399;
      font-weight: bold;
    }

    /* 区域通用样式 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-sub {
      font-size: 0.88rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-teal);
      margin-bottom: 10px;
      display: block;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* 数据指标横幅 */
    .metrics-bar {
      background: #ffffff;
      border-top: 1px solid var(--cyan-soft-border);
      border-bottom: 1px solid var(--cyan-soft-border);
      padding: 40px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metric-value {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--cyan-deep);
      margin-bottom: 6px;
    }

    .metric-title {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 服务能力卡片列表 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-lg);
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      border-color: var(--primary-teal);
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: var(--cyan-light);
      border: 1px solid var(--cyan-soft-border);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary-teal);
    }

    .service-icon svg {
      width: 26px;
      height: 26px;
      fill: currentColor;
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 18px;
    }

    .service-meta-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: auto;
    }

    .service-tag {
      font-size: 0.78rem;
      color: var(--cyan-deep);
      background: var(--cyan-light);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 500;
    }

    /* 行业解决方案与素材图文展示 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .solution-item {
      background: #ffffff;
      border: 1px solid var(--cyan-soft-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .solution-media-container {
      width: 100%;
      height: 240px;
      background: #e2e8f0;
      overflow: hidden;
      position: relative;
    }

    .solution-media-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .solution-item:hover .solution-media-container img {
      transform: scale(1.04);
    }

    .solution-body {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .solution-body h3 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .solution-body p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.6;
    }

    .feature-list {
      list-style: none;
      margin-bottom: 20px;
    }

    .feature-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .feature-list li svg {
      width: 16px;
      height: 16px;
      fill: var(--primary-teal);
      flex-shrink: 0;
    }

    /* 平台介绍与架构展台 */
    .platform-intro-card {
      background: linear-gradient(135deg, #ffffff 0%, #f0fdfa 100%);
      border: 1px solid var(--cyan-soft-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 40px;
    }

    .intro-info h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .intro-info p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }

    .supported-models-wrap {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .models-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--cyan-deep);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .model-pill {
      font-size: 0.8rem;
      font-weight: 600;
      background: #f8fafc;
      border: 1px solid #cbd5e1;
      padding: 5px 11px;
      border-radius: 6px;
      color: var(--text-main);
    }

    .model-pill.highlight {
      background: var(--cyan-light);
      border-color: var(--cyan-soft-border);
      color: var(--cyan-deep);
    }

    /* 流程步骤 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 26px 20px;
      text-align: center;
      position: relative;
      transition: all 0.3s ease;
    }

    .step-card:hover {
      border-color: var(--primary-teal);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .step-number {
      width: 44px;
      height: 44px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 10px rgba(13, 148, 136, 0.3);
    }

    .step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测板块 */
    .compare-container {
      background: #ffffff;
      border: 1px solid var(--cyan-soft-border);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .score-banner {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, #0f766e 0%, #0d9488 100%);
      color: #ffffff;
      padding: 24px 32px;
      border-radius: var(--radius-md);
      margin-bottom: 32px;
    }

    .score-left h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .score-left p {
      font-size: 0.95rem;
      opacity: 0.9;
    }

    .score-badge-wrap {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .rating-stars {
      color: #fbbf24;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .rating-number {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1;
      display: flex;
      align-items: baseline;
    }

    .rating-number small {
      font-size: 1.1rem;
      font-weight: 500;
      opacity: 0.8;
      margin-left: 4px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #e2e8f0;
    }

    .compare-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }

    .compare-table th.highlight-col,
    .compare-table td.highlight-col {
      background: rgba(14, 165, 233, 0.04);
      font-weight: 600;
      color: var(--cyan-deep);
    }

    .compare-tag-yes {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--cyan-deep);
      font-weight: 700;
    }

    .compare-tag-no {
      color: #94a3b8;
    }

    /* 用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }

    .testimonial-card:hover {
      border-color: var(--primary-teal);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .testimonial-quote {
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      position: relative;
    }

    .author-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--cyan-light);
      border: 1px solid var(--cyan-soft-border);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--cyan-deep);
      font-size: 0.95rem;
    }

    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }

    .faq-item.active {
      border-color: var(--primary-teal);
    }

    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      font-size: 1.02rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-icon {
      width: 20px;
      height: 20px;
      transition: transform 0.3s ease;
      fill: var(--primary-teal);
      flex-shrink: 0;
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, padding 0.35s ease;
      background: var(--cyan-light);
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.65;
      padding: 0 24px;
    }

    .faq-item.active .faq-body {
      padding: 16px 24px 20px;
      max-height: 250px;
    }

    /* 需求匹配与联系表单板块 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.15fr;
      gap: 40px;
      align-items: start;
    }

    .contact-card {
      background: #ffffff;
      border: 1px solid var(--cyan-soft-border);
      border-radius: var(--radius-lg);
      padding: 34px;
      box-shadow: var(--shadow-md);
    }

    .contact-card h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 20px;
      color: var(--text-main);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      background: #ffffff;
      color: var(--text-main);
      font-family: inherit;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      outline: none;
      border-color: var(--primary-teal);
      box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
    }

    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

    .channel-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 28px;
    }

    .channel-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 12px 16px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
      font-size: 0.92rem;
    }

    .channel-item strong {
      color: var(--cyan-deep);
      min-width: 90px;
    }

    .qr-showcase {
      display: flex;
      align-items: center;
      gap: 20px;
      padding: 20px;
      background: var(--cyan-light);
      border: 1px solid var(--cyan-soft-border);
      border-radius: var(--radius-md);
    }

    .qr-container {
      width: 110px;
      height: 110px;
      background: #ffffff;
      padding: 6px;
      border-radius: var(--radius-sm);
      border: 1px solid #cbd5e1;
      flex-shrink: 0;
    }

    .qr-container img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
    }

    .qr-desc h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .qr-desc p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 文章资讯与动态 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 22px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-card:hover {
      border-color: var(--primary-teal);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .article-meta {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    .article-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .article-card h4 a:hover {
      color: var(--primary-teal);
    }

    .article-summary {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 16px;
    }

    .article-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary-teal);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 友情链接与页脚 */
    .links-section {
      background: #f1f5f9;
      border-top: 1px solid #e2e8f0;
      padding: 30px 0;
    }

    .links-wrap {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      font-size: 0.88rem;
    }

    .links-label {
      font-weight: 700;
      color: var(--text-muted);
    }

    .links-wrap a {
      color: var(--text-muted);
      padding: 4px 10px;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: 4px;
      transition: all 0.2s ease;
    }

    .links-wrap a:hover {
      color: var(--primary-teal);
      border-color: var(--primary-teal);
      background: var(--cyan-light);
    }

    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #f8fafc;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 0.88rem;
      line-height: 1.6;
      margin-bottom: 16px;
      color: #94a3b8;
    }

    .footer-links-list {
      list-style: none;
    }

    .footer-links-list li {
      margin-bottom: 10px;
    }

    .footer-links-list a {
      color: #94a3b8;
      font-size: 0.88rem;
    }

    .footer-links-list a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服入口 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--cyan-soft-border);
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--cyan-deep);
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      background: var(--primary-teal);
      color: #ffffff;
      transform: scale(1.08);
    }

    .float-btn svg {
      width: 22px;
      height: 22px;
      fill: currentColor;
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .hero-wrap {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-content {
        max-width: 100%;
        text-align: center;
      }
      .badge-tag, .hero-perks, .hero-actions {
        justify-content: center;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solutions-grid {
        grid-template-columns: 1fr;
      }
      .platform-intro-card {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--cyan-soft-border);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .nav-cta-group {
        display: none;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .contact-layout {
        grid-template-columns: 1fr;
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
    }