:root {
      --primary: #0062ff;
      --primary-hover: #004ecc;
      --primary-light: #e8f1ff;
      --accent: #00d2ff;
      --accent-warm: #ff6b00;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --bg-body: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --border-hover: #cbd5e1;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 20px 35px -10px rgba(0, 98, 255, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
    }

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

    ul, ol {
      list-style: none;
    }

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

    /* 容器体系统一 */
    .container {
      width: 100%;
      max-width: 1240px;
      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, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-logo-wrap {
      height: 40px;
      display: flex;
      align-items: center;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-title span {
      color: var(--primary);
    }

    .nav-menu {
      display: flex;
      align-items: center;
    }

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

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

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

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

    .btn-nav-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0084ff 100%);
      color: #ffffff !important;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: 50px;
      box-shadow: 0 4px 12px rgba(0, 98, 255, 0.25);
      transition: var(--transition);
    }

    .btn-nav-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(0, 98, 255, 0.35);
    }

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

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

    /* 模块通用样式 */
    .section-wrap {
      padding: 90px 0;
      position: relative;
    }

    .section-wrap.bg-white {
      background-color: #ffffff;
    }

    .section-wrap.bg-light {
      background-color: var(--bg-body);
    }

    .section-wrap.bg-gradient {
      background: linear-gradient(180deg, #f0f6ff 0%, #f8fafc 100%);
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 56px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 50px;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 HERO 区域 (纯代码/无任何图片) */
    .hero-section {
      padding: 80px 0 100px 0;
      background: radial-gradient(circle at 80% 20%, rgba(0, 210, 255, 0.12) 0%, rgba(248, 250, 252, 0) 50%),
                  radial-gradient(circle at 10% 80%, rgba(0, 98, 255, 0.08) 0%, rgba(248, 250, 252, 0) 40%),
                  #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

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

    .hero-content {
      text-align: left;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #eff6ff;
      border: 1px solid #bfdbfe;
      padding: 6px 14px;
      border-radius: 30px;
      color: var(--primary);
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 20px;
    }

    .hero-tag-pulse {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(0, 98, 255, 0.2);
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }

    .hero-title .text-gradient {
      background: linear-gradient(135deg, var(--primary) 0%, #00b4d8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 36px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 15px 36px;
      background: linear-gradient(135deg, var(--primary) 0%, #0077ff 100%);
      color: #ffffff !important;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 12px;
      box-shadow: 0 10px 25px rgba(0, 98, 255, 0.3);
      transition: var(--transition);
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 30px rgba(0, 98, 255, 0.4);
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 15px 30px;
      background: #ffffff;
      color: var(--text-main);
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .hero-trust-bar {
      display: flex;
      align-items: center;
      gap: 24px;
      padding-top: 24px;
      border-top: 1px solid #f1f5f9;
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    .hero-trust-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-trust-item svg {
      width: 16px;
      height: 16px;
      fill: var(--primary);
    }

    /* 首屏纯CSS构建的控制台面板卡片 */
    .hero-panel-card {
      background: #ffffff;
      border: 1px solid #e0e7ff;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.12);
      position: relative;
    }

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

    .hero-status-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8rem;
      font-weight: 600;
      color: #16a34a;
      background: #dcfce7;
      padding: 4px 10px;
      border-radius: 20px;
    }

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

    .hero-metric-box {
      background: #f8fafc;
      border: 1px solid #edf2f7;
      border-radius: var(--radius-md);
      padding: 16px;
    }

    .hero-metric-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }

    .hero-metric-lbl {
      font-size: 0.82rem;
      color: var(--text-sub);
      margin-top: 4px;
    }

    .hero-code-box {
      background: #0f172a;
      color: #e2e8f0;
      border-radius: var(--radius-md);
      padding: 16px;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.82rem;
      line-height: 1.6;
    }

    .hero-code-box .code-keyword { color: #38bdf8; }
    .hero-code-box .code-string { color: #4ade80; }
    .hero-code-box .code-comment { color: #94a3b8; }

    /* 模型墙跑马灯/标签卡片 */
    .model-tags-container {
      margin-top: 36px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .model-badge {
      display: inline-block;
      padding: 6px 12px;
      background: #f1f5f9;
      color: var(--text-main);
      font-size: 0.82rem;
      font-weight: 600;
      border-radius: 6px;
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

    .model-badge:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* 核心服务与场景卡片网格 */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .cards-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      border-color: #93c5fd;
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 1.5rem;
    }

    .service-card-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .service-card-tag {
      display: inline-block;
      align-self: flex-start;
      padding: 4px 10px;
      background: #f1f5f9;
      color: var(--text-sub);
      font-size: 0.78rem;
      font-weight: 600;
      border-radius: 4px;
    }

    /* 场景分类标签与深度功能列表 */
    .feature-list {
      margin-top: 12px;
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
    }

    .feature-list li {
      position: relative;
      padding-left: 16px;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 6px;
    }

    .feature-list li::before {
      content: "•";
      position: absolute;
      left: 2px;
      color: var(--primary);
      font-weight: bold;
    }

    /* 对比评测表格板块 */
    .compare-card-main {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .rating-banner {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #0052cc 0%, var(--primary) 100%);
      color: #ffffff;
      padding: 24px 32px;
      border-radius: var(--radius-md);
      margin-bottom: 32px;
    }

    .rating-score-box {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .rating-number {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1;
      color: #ffde59;
    }

    .rating-scale {
      font-size: 1.1rem;
      opacity: 0.9;
    }

    .rating-stars {
      color: #ffde59;
      font-size: 1.25rem;
      margin-top: 6px;
    }

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

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

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

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

    .compare-table td.highlight-col {
      background: #f0f7ff;
      font-weight: 700;
      color: var(--primary);
    }

    /* 宣传图画廊展示区 */
    .media-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
    }

    .gallery-item {
      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;
    }

    .gallery-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .gallery-img-box {
      width: 100%;
      background: #e2e8f0;
    }

    .gallery-caption {
      padding: 16px 20px;
      background: #ffffff;
    }

    .gallery-caption h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .gallery-caption p {
      font-size: 0.85rem;
      color: var(--text-sub);
    }

    /* 流程与网络步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 44px;
      height: 44px;
      line-height: 44px;
      background: var(--primary);
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      margin: 0 auto 16px auto;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(0, 98, 255, 0.3);
    }

    .step-title {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

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

    .testimonial-body {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

    .testimonial-body::before {
      content: "“";
      font-size: 2.5rem;
      color: #bfdbfe;
      line-height: 1;
      display: block;
      margin-bottom: -10px;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }

    .author-avatar-placeholder {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--primary) 0%, #00b4d8 100%);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .author-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info span {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-icon {
      width: 20px;
      height: 20px;
      transition: transform 0.3s ease;
      fill: var(--text-sub);
    }

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

    .faq-answer {
      padding: 0 24px 20px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      display: none;
      border-top: 1px solid #f8fafc;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 表单与需求匹配区 */
    .form-section-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: var(--shadow-md);
    }

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

    .form-group {
      margin-bottom: 20px;
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 13px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      background: #ffffff;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0, 98, 255, 0.15);
    }

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }

    .btn-form-submit {
      width: 100%;
      padding: 15px 30px;
      background: linear-gradient(135deg, var(--primary) 0%, #0072ff 100%);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(0, 98, 255, 0.25);
      transition: var(--transition);
    }

    .btn-form-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 26px rgba(0, 98, 255, 0.35);
    }

    /* 资讯与文章列表 */
    .article-link-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 20px;
    }

    .article-item-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 20px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .article-item-row:hover {
      border-color: var(--primary);
      padding-left: 24px;
      background: #f8fbff;
    }

    .article-item-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .article-item-icon {
      color: var(--primary);
      font-weight: bold;
    }

    /* 官方联系与客服区 */
    .contact-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .qr-img-wrap {
      width: 180px;
      height: 180px;
      padding: 10px;
      background: #ffffff;
      border: 2px solid var(--primary-light);
      border-radius: var(--radius-md);
      margin: 16px 0;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-list {
      width: 100%;
      text-align: left;
      margin-top: 16px;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }

    .contact-info-list li {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .contact-info-list li strong {
      color: var(--text-main);
    }

    /* 友情链接与页脚 */
    .footer-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px 0;
      color: var(--text-muted);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .footer-links li {
      margin-bottom: 10px;
      font-size: 0.9rem;
    }

    .footer-links li a:hover {
      color: var(--primary);
    }

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

    .friend-links-box a {
      display: inline-block;
      padding: 6px 12px;
      background: #f1f5f9;
      color: var(--text-muted);
      font-size: 0.85rem;
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }

    .friend-links-box a:hover {
      color: var(--primary);
      border-color: var(--primary);
      background: var(--primary-light);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    /* 浮动工具栏 */
    .floating-tools {
      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(--border-color);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      transition: var(--transition);
    }

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

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        display: none;
        box-shadow: var(--shadow-md);
      }
      .nav-menu.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 0;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 16px;
        width: 100%;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .cards-grid-3,
      .cards-grid-4,
      .cards-grid-2,
      .testimonial-grid,
      .media-gallery-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
    }