:root {
      --primary-color: #0d59f2;
      --primary-hover: #0743be;
      --secondary-color: #00c292;
      --accent-orange: #ff6b35;
      --text-main: #1d2939;
      --text-muted: #475467;
      --text-light: #667085;
      --bg-page: #f8faff;
      --bg-surface: #ffffff;
      --bg-surface-alt: #f1f5fd;
      --border-color: #e4e9f2;
      --border-focus: #b5ccf8;
      --shadow-sm: 0 2px 6px rgba(13, 89, 242, 0.04);
      --shadow-md: 0 8px 24px rgba(13, 89, 242, 0.07);
      --shadow-lg: 0 16px 36px rgba(13, 89, 242, 0.12);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-wrap {
      padding: 72px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-alt {
      background-color: var(--bg-surface-alt);
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 48px auto;
    }

    .section-badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      background: rgba(13, 89, 242, 0.08);
      padding: 5px 14px;
      border-radius: 20px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-area .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }

    .brand-meta {
      display: flex;
      flex-direction: column;
    }

    .brand-title {
      font-size: 18px;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1.2;
    }

    .brand-tagline {
      font-size: 11px;
      color: var(--text-light);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-item {
      display: inline-block;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-item:hover {
      color: var(--primary-color);
      background-color: rgba(13, 89, 242, 0.05);
    }

    .ai-page-home-link {
      font-weight: 700;
      color: var(--primary-color);
      padding: 8px 12px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      text-align: center;
      line-height: 1;
    }

    .btn-primary {
      background-color: var(--primary-color);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(13, 89, 242, 0.28);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-1px);
    }

    .btn-outline {
      background-color: transparent;
      color: var(--primary-color);
      border-color: var(--primary-color);
    }

    .btn-outline:hover {
      background-color: rgba(13, 89, 242, 0.06);
    }

    .btn-warm {
      background-color: var(--accent-orange);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(255, 107, 53, 0.25);
    }

    .btn-warm:hover {
      background-color: #ea5b26;
      transform: translateY(-1px);
    }

    .btn-lg {
      font-size: 16px;
      padding: 14px 28px;
      border-radius: 8px;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 首屏 Hero（无图片，纯色/渐变/几何科技感） */
    .hero-section {
      background: linear-gradient(135deg, #f7faff 0%, #eef4fe 50%, #f6faff 100%);
      padding: 84px 0 68px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-glow-1 {
      position: absolute;
      top: -80px;
      left: 10%;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(13, 89, 242, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      bottom: -60px;
      right: 12%;
      width: 360px;
      height: 360px;
      background: radial-gradient(circle, rgba(0, 194, 146, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 30px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
      font-size: 14px;
      color: var(--text-muted);
    }

    .hero-chip-badge {
      background: var(--accent-orange);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 12px;
    }

    h1.hero-title {
      font-size: 40px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.28;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }

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

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 36px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 44px;
    }

    .btn-official-hero {
      background: linear-gradient(135deg, #0d59f2 0%, #1570ef 100%);
      color: #ffffff;
      font-weight: 700;
      font-size: 17px;
      padding: 14px 34px;
      border-radius: 8px;
      box-shadow: 0 6px 20px rgba(13, 89, 242, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-official-hero:hover {
      background: linear-gradient(135deg, #0743be 0%, #0d59f2 100%);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(13, 89, 242, 0.42);
    }

    .hero-features-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      text-align: left;
      margin-top: 24px;
    }

    .strip-card {
      background: #ffffff;
      padding: 20px 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

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

    .strip-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary-color);
      margin-bottom: 4px;
    }

    .strip-name {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .strip-detail {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.45;
    }

    /* 平台核心矩阵 */
    .models-marquee-wrap {
      padding: 36px 0;
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
    }

    .marquee-label {
      text-align: center;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-light);
      margin-bottom: 18px;
    }

    .tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 1160px;
      margin: 0 auto;
    }

    .model-badge {
      background: var(--bg-surface-alt);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-size: 13px;
      padding: 6px 14px;
      border-radius: 6px;
      font-weight: 500;
      transition: all 0.2s;
    }

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

    /* 通用网格布局 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .feature-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feature-card:hover {
      border-color: var(--border-focus);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .card-head {
      margin-bottom: 14px;
    }

    .card-icon-pill {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(13, 89, 242, 0.08);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 关于我们与平台介绍 */
    .intro-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 36px;
    }

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

    .intro-text h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .intro-text p {
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.7;
    }

    .intro-stats {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .stat-tile {
      background: var(--bg-surface-alt);
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .stat-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1.2;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

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

    .step-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
    }

    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary-color);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* 对比评测专属样式 */
    .eval-score-banner {
      background: linear-gradient(135deg, #102a6b 0%, #0d59f2 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 44px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
      margin-bottom: 32px;
      box-shadow: var(--shadow-md);
    }

    .eval-highlight h3 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #ffffff;
    }

    .eval-highlight p {
      color: #d1e0ff;
      font-size: 15px;
    }

    .eval-badge-group {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .eval-star-item {
      text-align: right;
    }

    .eval-star-label {
      font-size: 13px;
      color: #d1e0ff;
      margin-bottom: 4px;
    }

    .eval-star-val {
      font-size: 22px;
      color: #ffc107;
      font-weight: 700;
      letter-spacing: 2px;
    }

    .eval-num-box {
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(8px);
      padding: 12px 24px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.25);
      text-align: center;
    }

    .eval-score-big {
      font-size: 34px;
      font-weight: 900;
      line-height: 1;
      color: #ffffff;
    }

    .eval-score-total {
      font-size: 14px;
      color: #d1e0ff;
      margin-top: 4px;
    }

    .compare-table-wrap {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

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

    .compare-table th {
      background: #f8faff;
      color: var(--text-main);
      font-weight: 700;
    }

    .col-highlight {
      background-color: rgba(13, 89, 242, 0.04);
      color: var(--primary-color);
      font-weight: 600;
    }

    .table-tag-yes {
      display: inline-block;
      padding: 3px 10px;
      background: rgba(0, 194, 146, 0.12);
      color: #008765;
      font-weight: 700;
      border-radius: 4px;
      font-size: 12px;
    }

    .table-tag-no {
      display: inline-block;
      padding: 3px 10px;
      background: #fee4e2;
      color: #d92d20;
      border-radius: 4px;
      font-size: 12px;
    }

    /* 真实图片展示区（案例中心等） */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

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

    .gallery-item .ai-page-image,
    .gallery-item img {
      width: 100%;
      height: 190px;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .gallery-caption {
      padding: 12px 16px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      background: #fff;
    }

    .media-showcase-split {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
      margin-top: 24px;
    }

    .media-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-box img {
      width: 100%;
      height: auto;
      max-height: 280px;
      object-fit: cover;
      display: block;
    }

    .media-info {
      padding: 18px 20px;
    }

    .media-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .media-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

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

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

    .review-stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 14px;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: rgba(13, 89, 242, 0.1);
      color: var(--primary-color);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }

    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-role {
      font-size: 12px;
      color: var(--text-light);
    }

    /* FAQ 展开面板 */
    .faq-accordion {
      max-width: 920px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.2s;
    }

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

    .faq-question {
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      font-size: 20px;
      color: var(--primary-color);
      transition: transform 0.2s;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fafcff;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 22px 18px 22px;
    }

    /* 表单与联系我们 */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-col h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .contact-info-col p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.65;
      margin-bottom: 24px;
    }

    .contact-details-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

    .contact-detail-row {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-main);
    }

    .detail-icon-box {
      width: 34px;
      height: 34px;
      border-radius: 6px;
      background: var(--bg-surface-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary-color);
    }

    .qr-showcase {
      display: inline-block;
      text-align: center;
      background: var(--bg-surface-alt);
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-md);
    }

    .qr-showcase img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 8px auto;
      border-radius: 4px;
    }

    .qr-title {
      font-size: 12px;
      font-weight: 600;
      color: var(--text-muted);
    }

    .form-col form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

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

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(13, 89, 242, 0.1);
    }

    .form-textarea {
      resize: vertical;
      min-height: 90px;
    }

    /* 文章与资讯 */
    .news-section-inner {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
    }

    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 12px;
      margin-top: 20px;
    }

    .article-link-item {
      display: block;
      padding: 12px 16px;
      background: var(--bg-surface-alt);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-muted);
      word-break: break-all;
    }

    .article-link-item:hover {
      background: #ffffff;
      border-color: var(--primary-color);
      color: var(--primary-color);
    }

    /* 页脚与友情链接 */
    .site-footer {
      background: #111827;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      font-size: 14px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 18px;
      margin-bottom: 12px;
    }

    .footer-brand p {
      line-height: 1.6;
      color: #94a3b8;
      max-width: 320px;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 14px;
    }

    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links-list a {
      color: #94a3b8;
    }

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

    .friend-links-area {
      border-top: 1px solid #1e293b;
      padding: 24px 0;
      margin-bottom: 24px;
    }

    .friend-links-title {
      color: #ffffff;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-list a {
      color: #94a3b8;
      font-size: 13px;
    }

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

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 13px;
      color: #64748b;
    }

    /* 浮动组件与返回顶部 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary-color);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
      transform: scale(1.06);
    }

    .float-kefu-panel {
      display: none;
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      box-shadow: var(--shadow-lg);
      text-align: center;
      width: 170px;
    }

    .float-kefu-panel img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 6px auto;
    }

    .float-kefu-panel p {
      font-size: 12px;
      color: var(--text-muted);
    }

    .float-kefu-wrap:hover .float-kefu-panel {
      display: block;
    }

    /* 移动端自适应适配 */
    @media (max-width: 992px) {
      .hero-features-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .contact-container {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .media-showcase-split {
        grid-template-columns: 1fr;
      }
      .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      h1.hero-title {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .hero-features-strip {
        grid-template-columns: 1fr;
      }
      .grid-2, .grid-3, .grid-4, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .process-steps {
        grid-template-columns: 1fr;
      }
      .gallery-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .eval-score-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }