:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      /* 撞色艳色风核心变量：克制、饱满的高亮撞色搭配浅色底 */
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --accent-hot: #ff3b30;
      --accent-cyan: #0284c7;
      --accent-yellow: #f59e0b;
      --accent-violet: #7c3aed;
      --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 -5px rgba(79, 70, 229, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.06);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      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 {
      background: linear-gradient(180deg, #f1f5f9 0%, #f8fafc 180px, #f8fafc 100%);
      color: var(--text-main);
      overflow-x: hidden;
    }

    /* 贯穿全页的标准居中容器 */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #e0e7ff;
      box-shadow: 0 2px 10px rgba(79, 70, 229, 0.05);
    }

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

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-wrap .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
      object-fit: contain;
    }

    .brand-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      background: #fee2e2;
      color: var(--accent-hot);
      font-size: 11px;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 4px;
      border: 1px solid #fecaca;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 严格要求设置为0 */
      list-style: none;
    }

    .nav-links li a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 14px;
      font-weight: 600;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      display: inline-block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: #eff6ff;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn-nav-primary {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      color: #ffffff;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      text-decoration: none;
      font-size: 13px;
      font-weight: 700;
      box-shadow: 0 4px 10px rgba(79, 70, 229, 0.25);
      transition: all 0.2s;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 14px rgba(79, 70, 229, 0.35);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: 6px;
      font-size: 18px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 首屏 Hero：严禁包含任何图片 */
    .hero-section {
      padding: 70px 0 50px;
      background: radial-gradient(circle at 80% 20%, #e0e7ff 0%, transparent 40%),
                  radial-gradient(circle at 10% 80%, #fef3c7 0%, transparent 35%);
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #c7d2fe;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 18px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-hot);
      border-radius: 50%;
      animation: pulseDot 1.5s infinite;
    }

    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
    }

    /* H1 控制在20字以内 */
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      letter-spacing: -0.8px;
      margin-bottom: 16px;
    }

    .hero-title .highlight {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }

    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      margin-bottom: 30px;
    }

    /* 首屏醒目访问官网按钮 */
    .btn-hero-official {
      background: linear-gradient(135deg, #ff3b30 0%, #ff6b00 100%);
      color: #ffffff;
      font-size: 16px;
      font-weight: 800;
      padding: 14px 30px;
      border-radius: var(--radius-md);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 6px 20px rgba(255, 59, 48, 0.35);
      border: 2px solid #ffffff;
      transition: all 0.25s ease;
    }

    .btn-hero-official:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(255, 59, 48, 0.45);
      background: linear-gradient(135deg, #e62e24 0%, #f05e00 100%);
    }

    .btn-hero-secondary {
      background: #ffffff;
      color: var(--primary);
      font-size: 15px;
      font-weight: 700;
      padding: 14px 24px;
      border-radius: var(--radius-md);
      text-decoration: none;
      border: 2px solid #c7d2fe;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .btn-hero-secondary:hover {
      background: #eff6ff;
      border-color: var(--primary);
    }

    /* 首屏纯CSS控制台卡片，绝无图片 */
    .hero-console-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid #e0e7ff;
      padding: 24px;
      box-shadow: 0 20px 40px rgba(79, 70, 229, 0.12);
      position: relative;
    }

    .console-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 18px;
    }

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

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .dot-red { background: #ef4444; }
    .dot-yellow { background: #f59e0b; }
    .dot-green { background: #10b981; }

    .console-badge {
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      background: #ecfdf5;
      color: #059669;
      border-radius: 12px;
      border: 1px solid #a7f3d0;
    }

    .console-content-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 20px;
    }

    .model-pill {
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      background: #f1f5f9;
      color: #334155;
      border-radius: 6px;
      border: 1px solid #cbd5e1;
    }

    .model-pill.active-pill {
      background: #ede9fe;
      color: var(--primary);
      border-color: #c4b5fd;
      font-weight: 700;
    }

    .console-metrics-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      background: #f8fafc;
      padding: 14px;
      border-radius: var(--radius-md);
      border: 1px dashed #cbd5e1;
    }

    .metric-item-num {
      font-size: 22px;
      font-weight: 900;
      color: var(--primary);
    }

    .metric-item-label {
      font-size: 12px;
      color: var(--text-light);
      font-weight: 600;
    }

    /* 区域统一标准样式 */
    .section-padding {
      padding: 64px 0;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 46px;
    }

    .section-eyebrow {
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--accent-hot);
      background: #ffe4e6;
      display: inline-block;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
      border: 1px solid #fecdd3;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.35;
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 服务与能力卡片：撞色与清晰边界 */
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .service-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #c7d2fe;
    }

    .card-top-tag {
      position: absolute;
      top: 0;
      right: 0;
      font-size: 10px;
      font-weight: 800;
      padding: 4px 10px;
      border-bottom-left-radius: 8px;
      background: #eff6ff;
      color: var(--primary);
      border-left: 1px solid #dbeafe;
      border-bottom: 1px solid #dbeafe;
    }

    .card-icon-box {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 900;
      margin-bottom: 16px;
      color: #ffffff;
    }

    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .card-text {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 14px;
    }

    .card-features-list {
      list-style: none;
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
    }

    .card-features-list li {
      font-size: 12px;
      color: var(--text-light);
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 6px;
    }

    .card-features-list li::before {
      content: "•";
      color: var(--primary);
      font-weight: bold;
      font-size: 14px;
    }

    /* 平台介绍 & 核心架构 */
    .about-box {
      background: #ffffff;
      border: 2px solid #e0e7ff;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .about-feature-item {
      display: flex;
      gap: 14px;
      margin-bottom: 20px;
    }

    .about-feature-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: #eef2ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 800;
      flex-shrink: 0;
      border: 1px solid #c7d2fe;
    }

    .about-feature-title {
      font-size: 15px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 4px;
    }

    .about-feature-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 流程与步骤 */
    .process-steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num-badge {
      font-size: 12px;
      font-weight: 800;
      background: #f1f5f9;
      color: var(--primary);
      padding: 3px 8px;
      border-radius: 6px;
      display: inline-block;
      margin-bottom: 12px;
      border: 1px solid #cbd5e1;
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 6px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 案例中心：包含指定图片素材 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
      margin-bottom: 24px;
    }

    .case-image-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 12px;
      box-shadow: var(--shadow-sm);
    }

    .case-image-container img {
      width: 100%;
      height: auto;
      border-radius: 8px;
      display: block;
      object-fit: cover;
    }

    .case-banner-bundle {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .case-banner-item {
      background: #ffffff;
      padding: 10px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .case-banner-item img {
      width: 100%;
      height: auto;
      border-radius: 6px;
      display: block;
      object-fit: cover;
    }

    /* 对比评测高亮板块 */
    .eval-card-main {
      background: #ffffff;
      border: 2px solid #818cf8;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      margin-bottom: 24px;
    }

    .eval-top-banner {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      background: linear-gradient(135deg, #eff6ff 0%, #fdf2f8 100%);
      padding: 20px 24px;
      border-radius: var(--radius-md);
      margin-bottom: 24px;
      border: 1px solid #c7d2fe;
    }

    .eval-score-num {
      font-size: 38px;
      font-weight: 900;
      color: var(--accent-hot);
      line-height: 1;
    }

    .eval-score-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 20px;
      font-weight: 900;
      letter-spacing: 2px;
    }

    .comparison-table-wrapper {
      overflow-x: auto;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
    }

    .comparison-table th {
      background: #f8fafc;
      color: #0f172a;
      font-weight: 700;
    }

    .comparison-table tr:hover td {
      background: #f8fafc;
    }

    .col-highlight {
      background: #f5f3ff;
      font-weight: 700;
      color: var(--primary);
    }

    /* 需求匹配与表单接入 */
    .form-box-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 32px;
      background: #ffffff;
      border: 2px solid #e0e7ff;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-side-info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .form-field-group {
      margin-bottom: 16px;
    }

    .form-field-label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 6px;
    }

    .form-field-input,
    .form-field-select,
    .form-field-textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-field-input:focus,
    .form-field-select:focus,
    .form-field-textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }

    .btn-submit-form {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      color: #ffffff;
      font-size: 15px;
      font-weight: 800;
      padding: 12px 24px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      width: 100%;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
      transition: all 0.2s;
    }

    .btn-submit-form:hover {
      background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
      transform: translateY(-1px);
    }

    /* 用户评论 (6条精选) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-quote {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }

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

    .user-avatar-badge {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: #ede9fe;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 14px;
      border: 1px solid #c4b5fd;
    }

    .user-name-title {
      font-size: 13px;
      font-weight: 700;
      color: #0f172a;
    }

    .user-role-tag {
      font-size: 11px;
      color: var(--text-light);
    }

    /* 常见问题 FAQ (手风琴) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 10px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 700;
      color: #0f172a;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      background: #ffffff;
      transition: background 0.2s;
    }

    .faq-question:hover {
      background: #f8fafc;
    }

    .faq-icon-arrow {
      font-size: 12px;
      transition: transform 0.25s ease;
      color: var(--primary);
    }

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

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px dashed #f1f5f9;
      background: #fafafa;
    }

    .faq-item.active .faq-answer {
      display: block;
      padding-top: 14px;
    }

    /* 资讯与动态专区 */
    .articles-block-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
    }

    .article-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
      margin-top: 14px;
    }

    .article-links-list li a {
      font-size: 13px;
      color: var(--primary);
      text-decoration: none;
      background: #eff6ff;
      padding: 6px 14px;
      border-radius: 6px;
      border: 1px solid #dbeafe;
      transition: all 0.2s;
      display: inline-block;
    }

    .article-links-list li a:hover {
      background: var(--primary);
      color: #ffffff;
    }

    /* 联系我们专区与客服二维码 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      background: #ffffff;
      border: 2px solid #e0e7ff;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .contact-qr-wrap {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      background: #f8fafc;
      border: 1px dashed #cbd5e1;
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
    }

    .contact-qr-wrap img {
      max-width: 170px;
      width: 100%;
      height: auto;
      border-radius: 8px;
      margin-bottom: 12px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    /* 代理加盟政策条幅 */
    .partner-banner {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-top: 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      box-shadow: var(--shadow-lg);
    }

    .partner-title {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 8px;
      color: #ffffff;
    }

    .partner-desc {
      font-size: 14px;
      color: #c7d2fe;
      max-width: 600px;
      line-height: 1.6;
    }

    .btn-partner {
      background: #f59e0b;
      color: #0f172a;
      font-size: 15px;
      font-weight: 800;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      text-decoration: none;
      transition: all 0.2s;
    }

    .btn-partner:hover {
      background: #d97706;
      color: #ffffff;
    }

    /* 页脚标准规范 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 50px 0 26px;
      margin-top: 60px;
      border-top: 4px solid var(--primary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-title {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
    }

    .footer-text {
      font-size: 13px;
      line-height: 1.65;
      color: #94a3b8;
      margin-bottom: 12px;
    }

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

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links li a {
      color: #cbd5e1;
      font-size: 13px;
      text-decoration: none;
      transition: color 0.2s;
    }

    .footer-links li a:hover {
      color: #ffffff;
      text-decoration: underline;
    }

    .friend-links-box {
      border-top: 1px solid #334155;
      padding-top: 20px;
      margin-bottom: 24px;
    }

    .friend-links-label {
      font-size: 13px;
      font-weight: 700;
      color: #e2e8f0;
      margin-bottom: 10px;
    }

    .friend-links-items {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links-items a {
      color: #94a3b8;
      font-size: 12.5px;
      text-decoration: none;
      transition: color 0.2s;
    }

    .friend-links-items a:hover {
      color: #ffffff;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      font-size: 12px;
      color: #64748b;
    }

    /* 悬浮小组件 */
    .float-tools {
      position: fixed;
      right: 20px;
      bottom: 25px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary);
      box-shadow: 0 4px 14px rgba(15, 23, 42, 0.16);
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      font-weight: 800;
      font-size: 13px;
      border: 1px solid #cbd5e1;
      cursor: pointer;
      transition: all 0.2s;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.05);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-grid,
      .about-grid,
      .form-box-layout,
      .contact-grid {
        grid-template-columns: 1fr;
      }

      .card-grid-3,
      .card-grid-4,
      .process-steps-wrap,
      .testimonial-grid,
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }

      .case-gallery-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }

      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 2px solid var(--border-color);
        padding: 16px 24px;
        box-shadow: var(--shadow-md);
      }

      .nav-links.show-menu {
        display: flex;
      }

      .nav-links li {
        width: 100%;
      }

      .nav-links li a {
        display: block;
        padding: 10px 0;
        border-bottom: 1px solid #f1f5f9;
      }

      .hero-title {
        font-size: 28px;
      }

      .card-grid-3,
      .card-grid-4,
      .process-steps-wrap,
      .testimonial-grid,
      .case-banner-bundle,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn-hero-official,
      .btn-hero-secondary {
        text-align: center;
        justify-content: center;
      }
    }