:root {
      --primary: #1e3a8a;
      --primary-accent: #0284c7;
      --vibrant-orange: #ea580c;
      --vibrant-amber: #f59e0b;
      --vibrant-violet: #7c3aed;
      --bg-warm: #f8fafc;
      --bg-white: #ffffff;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #334155;
      --text-soft: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
      --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.1);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.25s ease;
    }

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

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

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

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

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #e0e7ff;
      box-shadow: 0 2px 10px rgba(0,0,0,0.04);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-tagline {
      font-size: 14px;
      font-weight: 700;
      color: var(--vibrant-orange);
      background: #fff7ed;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      border: 1px solid #ffedd5;
    }

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

    .nav-links a {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links a:hover {
      color: var(--vibrant-orange);
      background-color: #fff7ed;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-action-highlight {
      background: linear-gradient(135deg, var(--vibrant-orange), #c2410c);
      color: #ffffff !important;
      font-size: 14px;
      font-weight: 700;
      padding: 10px 20px;
      border-radius: 30px;
      box-shadow: 0 4px 14px rgba(234, 88, 12, 0.35);
      border: 1px solid rgba(255,255,255,0.2);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-action-highlight:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(234, 88, 12, 0.45);
    }

    .nav-toggle-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    /* 模块通用头 */
    .section-spacing {
      padding: 72px 0;
      position: relative;
    }

    .section-header-block {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px auto;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--vibrant-violet);
      background: #f3e8ff;
      border: 1px solid #e9d5ff;
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-lead {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 纯 CSS 视觉首屏 (无任何图片) */
    .hero-stage {
      padding: 70px 0 60px 0;
      background: linear-gradient(135deg, #eef2ff 0%, #fae8ff 50%, #fff7ed 100%);
      border-bottom: 2px solid #e2e8f0;
      position: relative;
      overflow: hidden;
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid #fed7aa;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 700;
      color: var(--vibrant-orange);
      box-shadow: var(--shadow-sm);
      margin-bottom: 20px;
    }

    .hero-title-main {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 900;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title-main span {
      background: linear-gradient(120deg, #1e3a8a, #7c3aed, #ea580c);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 17px;
      line-height: 1.7;
      color: #334155;
      margin-bottom: 32px;
      font-weight: 500;
    }

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

    .btn-portal-primary {
      background: linear-gradient(135deg, #ea580c 0%, #d97706 100%);
      color: #ffffff;
      font-size: 17px;
      font-weight: 800;
      padding: 14px 34px;
      border-radius: 40px;
      box-shadow: 0 10px 24px rgba(234, 88, 12, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 2px solid #ffffff;
    }

    .btn-portal-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 28px rgba(234, 88, 12, 0.5);
    }

    .btn-portal-secondary {
      background: #ffffff;
      color: #1e3a8a;
      font-size: 16px;
      font-weight: 700;
      padding: 14px 28px;
      border-radius: 40px;
      border: 2px solid #93c5fd;
      display: inline-flex;
      align-items: center;
      box-shadow: var(--shadow-sm);
    }

    .btn-portal-secondary:hover {
      background: #eff6ff;
      border-color: #2563eb;
    }

    .hero-highlights-strip {
      display: flex;
      gap: 20px;
      font-size: 13px;
      color: #475569;
      font-weight: 600;
      flex-wrap: wrap;
    }

    .hero-highlights-strip span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .hero-highlights-strip svg {
      width: 16px;
      height: 16px;
      color: #16a34a;
    }

    /* 首屏纯CSS科技模拟面板 (零图片) */
    .hero-console-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 3px solid #c7d2fe;
      box-shadow: 0 20px 40px -15px rgba(30, 58, 138, 0.2);
      padding: 24px;
      position: relative;
    }

    .console-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 2px solid #f1f5f9;
      padding-bottom: 14px;
      margin-bottom: 18px;
    }

    .console-dots {
      display: flex;
      gap: 6px;
    }

    .dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
    }
    .dot-red { background: #ef4444; }
    .dot-yellow { background: #f59e0b; }
    .dot-green { background: #10b981; }

    .console-status {
      font-size: 12px;
      font-weight: 700;
      color: #047857;
      background: #d1fae5;
      padding: 2px 10px;
      border-radius: 12px;
    }

    .console-metric-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 18px;
    }

    .console-metric-box {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 12px 14px;
    }

    .metric-val {
      font-size: 24px;
      font-weight: 900;
      color: #1e3a8a;
    }

    .metric-lbl {
      font-size: 12px;
      color: #64748b;
      font-weight: 600;
    }

    .console-flow-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .flow-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      background: #fdf4ff;
      border: 1px solid #f5d0fe;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 700;
      color: #701a75;
    }

    .flow-tag {
      font-size: 11px;
      background: #fae8ff;
      color: #a21caf;
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 平台矩阵滚动标牌 */
    .models-marquee-zone {
      background: #ffffff;
      border-bottom: 1px solid #e2e8f0;
      padding: 18px 0;
    }

    .marquee-label {
      font-size: 13px;
      font-weight: 800;
      color: #475569;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

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

    .model-pill {
      font-size: 12px;
      font-weight: 700;
      padding: 5px 12px;
      border-radius: 20px;
      background: #f1f5f9;
      color: #334155;
      border: 1px solid #cbd5e1;
      display: inline-block;
      transition: var(--transition);
    }

    .model-pill:hover {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
    }

    /* 核心矩阵卡片 */
    .grid-three-col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-four-col {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .feature-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #93c5fd;
    }

    .feature-badge-top {
      align-self: flex-start;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 12px;
      margin-bottom: 14px;
    }

    .badge-blue { background: #dbeafe; color: #1e40af; }
    .badge-orange { background: #ffedd5; color: #c2410c; }
    .badge-purple { background: #f3e8ff; color: #6b21a8; }
    .badge-emerald { background: #d1fae5; color: #065f46; }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .feature-footer-action {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid #f1f5f9;
      padding-top: 12px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-accent);
    }

    /* 图文混排区 (真实素材图) */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
      margin-bottom: 40px;
    }

    .media-frame {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 3px solid #e2e8f0;
      box-shadow: var(--shadow-md);
      background: #f8fafc;
    }

    .media-frame img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      display: block;
    }

    .media-desc-box h3 {
      font-size: 26px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 14px;
    }

    .media-desc-box p {
      font-size: 15px;
      color: #475569;
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .feature-tick-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: 24px;
    }

    .feature-tick-list li {
      font-size: 14px;
      font-weight: 600;
      color: #1e293b;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .tick-icon {
      color: #16a34a;
      font-weight: 900;
    }

    /* 对比评测表格 */
    .compare-container {
      background: #ffffff;
      border: 2px solid #c7d2fe;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #1e3a8a, #4338ca);
      color: #ffffff;
      padding: 24px 32px;
      border-radius: var(--radius-md);
      margin-bottom: 28px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-badge-area {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .big-score-val {
      font-size: 48px;
      font-weight: 900;
      line-height: 1;
      color: #fde047;
    }

    .score-meta h4 {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 4px;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 18px;
      letter-spacing: 2px;
    }

    .table-responsive-box {
      width: 100%;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #e2e8f0;
      font-size: 14px;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 800;
      color: #0f172a;
    }

    .col-highlight {
      background: #fdf2f8 !important;
      font-weight: 700;
      color: #9d174d;
    }

    /* 流程与步骤 */
    .timeline-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: 24px 20px;
      position: relative;
    }

    .step-num-badge {
      width: 36px;
      height: 36px;
      background: var(--vibrant-orange);
      color: #ffffff;
      font-size: 16px;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      box-shadow: 0 4px 10px rgba(234, 88, 12, 0.3);
    }

    .step-card h4 {
      font-size: 17px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 13px;
      color: #64748b;
      line-height: 1.6;
    }

    /* 常见问题折叠面板 */
    .faq-layout-box {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item-accordion {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item-accordion:hover {
      border-color: #93c5fd;
    }

    .faq-trigger-btn {
      width: 100%;
      padding: 18px 24px;
      background: none;
      border: none;
      text-align: left;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
    }

    .faq-trigger-btn:hover {
      color: var(--vibrant-orange);
    }

    .faq-chevron {
      font-size: 18px;
      transition: transform 0.25s ease;
      color: #94a3b8;
    }

    .faq-content-drawer {
      padding: 0 24px 18px 24px;
      font-size: 14px;
      color: #475569;
      line-height: 1.7;
      display: none;
      border-top: 1px solid #f8fafc;
    }

    .faq-item-accordion.active .faq-chevron {
      transform: rotate(180deg);
      color: var(--vibrant-orange);
    }

    .faq-item-accordion.active .faq-content-drawer {
      display: block;
    }

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

    .testi-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;
    }

    .testi-quote {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: normal;
    }

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

    .testi-avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #3b82f6, #8b5cf6);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }

    .testi-meta-names h5 {
      font-size: 14px;
      font-weight: 800;
      color: #0f172a;
    }

    .testi-meta-names span {
      font-size: 12px;
      color: #64748b;
    }

    /* 需求表单与代理加盟分栏 */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: start;
    }

    .form-wrapper-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

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

    .form-field-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 6px;
    }

    .form-field-input, .form-field-select, .form-field-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: #0f172a;
      background: #f8fafc;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-field-input:focus, .form-field-select:focus, .form-field-textarea:focus {
      outline: none;
      border-color: #2563eb;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--vibrant-orange), #c2410c);
      color: #ffffff;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 800;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(234, 88, 12, 0.3);
      transition: var(--transition);
    }

    .form-submit-btn:hover {
      opacity: 0.95;
      transform: translateY(-2px);
    }

    .contact-info-panel {
      background: linear-gradient(135deg, #1e1b4b, #312e81);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-lg);
    }

    .contact-info-panel h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #ffffff;
    }

    .contact-info-panel p {
      font-size: 14px;
      color: #c7d2fe;
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .contact-direct-items {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 28px;
    }

    .direct-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: #e0e7ff;
    }

    .direct-badge {
      background: rgba(255,255,255,0.15);
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 700;
      font-size: 12px;
      color: #fde047;
    }

    .qr-card-box {
      background: rgba(255, 255, 255, 0.08);
      border: 1px dashed rgba(255,255,255,0.3);
      border-radius: var(--radius-md);
      padding: 16px;
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .qr-card-box img {
      width: 100px;
      height: 100px;
      border-radius: var(--radius-sm);
      background: #ffffff;
      padding: 4px;
    }

    .qr-meta h5 {
      font-size: 15px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 4px;
    }

    .qr-meta span {
      font-size: 12px;
      color: #c7d2fe;
      display: block;
      line-height: 1.5;
    }

    /* 行业资讯文章外链区 */
    .article-links-container {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 14px;
    }

    .article-item-anchor {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      color: #334155;
    }

    .article-item-anchor:hover {
      background: #eff6ff;
      border-color: #93c5fd;
      color: #1d4ed8;
    }

    /* 宣传图画廊展示区 */
    .banner-gallery-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 36px;
    }

    .banner-gallery-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 2px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .banner-gallery-item img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }

    .banner-gallery-item:hover img {
      transform: scale(1.03);
    }

    /* 友情链接与底部导航区 */
    .footer-main-block {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 4px solid var(--vibrant-orange);
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid #334155;
      margin-bottom: 30px;
    }

    .footer-col h4 {
      font-size: 16px;
      font-weight: 800;
      color: #f8fafc;
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 13px;
      line-height: 1.7;
      color: #94a3b8;
      margin-bottom: 16px;
    }

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-box a {
      font-size: 13px;
      color: #cbd5e1;
      background: #1e293b;
      padding: 6px 12px;
      border-radius: 4px;
      border: 1px solid #334155;
    }

    .friend-links-box a:hover {
      background: var(--vibrant-orange);
      color: #ffffff;
      border-color: var(--vibrant-orange);
    }

    .footer-bottom-copy {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: #64748b;
    }

    .footer-bottom-copy a {
      color: #94a3b8;
    }

    .footer-bottom-copy a:hover {
      color: #ffffff;
    }

    /* 悬浮客服面板 */
    .floating-service-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-circle-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0,0,0,0.15);
      border: 2px solid #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: #1e293b;
      transition: var(--transition);
      position: relative;
    }

    .float-circle-btn:hover {
      transform: scale(1.08);
      border-color: var(--vibrant-orange);
      color: var(--vibrant-orange);
    }

    .float-wechat:hover .float-qr-popover {
      display: block;
    }

    .float-qr-popover {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      width: 160px;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid #e2e8f0;
      text-align: center;
    }

    .float-qr-popover img {
      width: 100%;
      height: auto;
      margin-bottom: 6px;
    }

    .float-qr-popover span {
      font-size: 12px;
      font-weight: 700;
      color: #0f172a;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .grid-three-col, .grid-four-col, .timeline-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .media-showcase-grid {
        grid-template-columns: 1fr;
      }
      .banner-gallery-row {
        grid-template-columns: 1fr;
      }
      .contact-form-layout {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 2px solid #e2e8f0;
      }
      .nav-links.nav-active {
        display: flex;
      }
      .nav-toggle-btn {
        display: block;
      }
      .grid-three-col, .grid-four-col, .timeline-steps-grid, .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .hero-title-main {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .floating-service-widget {
        right: 14px;
        bottom: 16px;
      }
    }