:root {
      --primary-color: #ff5e00;
      --primary-hover: #e05200;
      --primary-light: #fff5ee;
      --accent-gold: #ffaa00;
      --text-main: #1f2329;
      --text-muted: #646a73;
      --text-light: #8f959e;
      --bg-page: #fdfbf7;
      --bg-surface: #ffffff;
      --border-color: #f2e6dc;
      --border-hover: #ffc499;
      --card-shadow: 0 8px 24px rgba(255, 94, 0, 0.06);
      --card-shadow-hover: 0 16px 36px rgba(255, 94, 0, 0.12);
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    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-page);
      color: var(--text-main);
      line-height: 1.65;
      font-size: 15px;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 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);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-wrap .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }
    .brand-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-badge {
      font-size: 11px;
      background: linear-gradient(135deg, #ff7a00, #ff4500);
      color: #fff;
      padding: 2px 7px;
      border-radius: 4px;
      font-weight: 600;
      letter-spacing: 0;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: 6px;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-color);
      background-color: var(--primary-light);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-primary {
      background: linear-gradient(135deg, #ff6a00, #ee3900);
      color: #fff !important;
      padding: 9px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 20px;
      box-shadow: 0 4px 12px rgba(255, 94, 0, 0.25);
    }
    .btn-nav-primary:hover {
      background: linear-gradient(135deg, #ff7d1a, #ff4500);
      box-shadow: 0 6px 16px rgba(255, 94, 0, 0.35);
      transform: translateY(-1px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    /* 通用区块排版 */
    section.page-section {
      padding: 84px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, #fff7f2 0%, #fdfbf7 100%);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 52px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-color);
      background-color: var(--primary-light);
      border: 1px solid rgba(255, 94, 0, 0.18);
      padding: 4px 14px;
      border-radius: 30px;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 50% 10%, #fff1e6 0%, #fdfbf7 70%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-wrap {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #ffd8bf;
      padding: 6px 18px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      box-shadow: 0 4px 12px rgba(255, 94, 0, 0.08);
      margin-bottom: 24px;
    }
    .hero-pill-dot {
      width: 8px;
      height: 8px;
      background-color: #00c06b;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(0, 192, 107, 0.2);
    }
    .hero-h1 {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      color: #1a1a1a;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-h1 span.highlight {
      color: var(--primary-color);
      position: relative;
      display: inline-block;
    }
    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px;
      line-height: 1.65;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .btn-main-action {
      background: linear-gradient(135deg, #ff5e00 0%, #ee3800 100%);
      color: #ffffff !important;
      padding: 14px 34px;
      font-size: 16px;
      font-weight: 700;
      border-radius: 30px;
      box-shadow: 0 8px 24px rgba(255, 94, 0, 0.35);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-main-action:hover {
      background: linear-gradient(135deg, #ff7017 0%, #fa450d 100%);
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(255, 94, 0, 0.45);
    }
    .btn-secondary-action {
      background: #ffffff;
      color: var(--text-main) !important;
      border: 1px solid #ffd8bf;
      padding: 14px 30px;
      font-size: 16px;
      font-weight: 600;
      border-radius: 30px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-secondary-action:hover {
      border-color: var(--primary-color);
      color: var(--primary-color) !important;
      background-color: #fff9f5;
    }
    .hero-feature-tags {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
      font-size: 13px;
      color: var(--text-light);
    }
    .hero-feature-tags span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--text-muted);
    }
    .hero-feature-tags svg {
      color: #ff5e00;
    }

    /* 指标矩阵统计 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--card-shadow);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .metric-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--card-shadow-hover);
      border-color: var(--border-hover);
    }
    .metric-num {
      font-size: 34px;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .metric-hint {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 支持模型矩阵徽章 */
    .models-stream {
      padding: 30px 0 10px;
      text-align: center;
    }
    .models-stream-title {
      font-size: 13px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--text-light);
      margin-bottom: 18px;
    }
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 1000px;
      margin: 0 auto;
    }
    .model-pill {
      background: #ffffff;
      border: 1px solid #fae4d5;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      color: #3a3f47;
      font-weight: 500;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
      transition: all 0.2s ease;
    }
    .model-pill:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      transform: translateY(-2px);
      box-shadow: 0 4px 10px rgba(255, 94, 0, 0.12);
    }

    /* 平台核心能力卡片 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 28px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.28s ease;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: var(--border-hover);
    }
    .service-card-top {
      margin-bottom: 18px;
    }
    .icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 20px;
    }
    .service-card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .service-card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .service-card-footer {
      padding-top: 18px;
      border-top: 1px solid #f6eee8;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: var(--primary-color);
      font-weight: 600;
    }

    /* 案例展示区 */
    .case-media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
    }
    .case-media-card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-3px);
    }
    .case-image-holder {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #fdf5ef;
      overflow: hidden;
    }
    .case-image-holder.square-aspect {
      aspect-ratio: 1 / 1;
    }
    .case-image-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .case-media-card:hover .case-image-holder img {
      transform: scale(1.03);
    }
    .case-content-box {
      padding: 22px;
    }
    .case-category {
      font-size: 12px;
      font-weight: 600;
      color: var(--primary-color);
      text-transform: uppercase;
      margin-bottom: 6px;
      display: block;
    }
    .case-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .case-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 流程图步进 */
    .step-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 26px 20px;
      border-radius: 14px;
      position: relative;
      box-shadow: var(--card-shadow);
    }
    .step-badge {
      display: inline-block;
      width: 34px;
      height: 34px;
      line-height: 34px;
      text-align: center;
      background: var(--primary-color);
      color: #ffffff;
      font-weight: 700;
      border-radius: 50%;
      font-size: 15px;
      margin-bottom: 14px;
      box-shadow: 0 4px 10px rgba(255, 94, 0, 0.3);
    }
    .step-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 对比评测表格与评分卡 */
    .evaluation-summary {
      background: linear-gradient(135deg, #fff7f0 0%, #fff 100%);
      border: 2px solid #ffd8bf;
      border-radius: 18px;
      padding: 32px;
      margin-bottom: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }
    .score-block {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .score-circle {
      width: 88px;
      height: 88px;
      background: linear-gradient(135deg, #ff5e00, #ff8c00);
      border-radius: 50%;
      color: #fff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 18px rgba(255, 94, 0, 0.35);
    }
    .score-circle .score-val {
      font-size: 28px;
      font-weight: 900;
      line-height: 1;
    }
    .score-circle .score-total {
      font-size: 12px;
      opacity: 0.9;
    }
    .score-meta h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .score-meta p {
      font-size: 14px;
      color: var(--text-muted);
    }
    .star-rating {
      color: #ffaa00;
      font-size: 18px;
      letter-spacing: 2px;
    }
    .comparison-table-wrap {
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      box-shadow: var(--card-shadow);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f2e7de;
      font-size: 14px;
    }
    .comparison-table th {
      background-color: #faf5f0;
      color: var(--text-main);
      font-weight: 700;
    }
    .comparison-table th.col-highlight,
    .comparison-table td.col-highlight {
      background-color: #fff9f5;
      color: var(--primary-color);
      font-weight: 600;
    }
    .tag-superior {
      display: inline-block;
      background: rgba(255, 94, 0, 0.12);
      color: var(--primary-color);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 700;
    }

    /* 用户评论卡片 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 100%;
    }
    .testimonial-body {
      font-size: 14px;
      color: #373c44;
      line-height: 1.65;
      margin-bottom: 18px;
      position: relative;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px solid #f6ece4;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ffd4ba, #ff8c42);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 16px;
    }
    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 880px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      margin-bottom: 12px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary-color);
    }
    .faq-arrow {
      width: 20px;
      height: 20px;
      transition: transform 0.25s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background-color: #fdfbf7;
    }
    .faq-answer-inner {
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .faq-item.active {
      border-color: #ffc499;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--primary-color);
    }
    .faq-item.active .faq-answer {
      max-height: 240px;
    }

    /* 表单与需求匹配 */
    .form-layout-wrap {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      align-items: start;
    }
    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 18px;
      padding: 36px;
      box-shadow: var(--card-shadow);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid #dfd3c7;
      border-radius: 8px;
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      background-color: #faf8f5;
    }
    .form-control:focus {
      border-color: var(--primary-color);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(255, 94, 0, 0.12);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .btn-submit-form {
      width: 100%;
      background: linear-gradient(135deg, #ff5e00, #ee3800);
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      padding: 14px 20px;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(255, 94, 0, 0.3);
      transition: all 0.25s ease;
    }
    .btn-submit-form:hover {
      background: linear-gradient(135deg, #ff7119, #f7450c);
      transform: translateY(-1px);
      box-shadow: 0 8px 22px rgba(255, 94, 0, 0.4);
    }

    /* 联系与服务方式信息卡 */
    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 18px;
      padding: 32px;
      box-shadow: var(--card-shadow);
    }
    .contact-line {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 20px;
    }
    .contact-icon {
      width: 36px;
      height: 36px;
      background: var(--primary-light);
      border-radius: 8px;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .contact-detail h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }
    .contact-detail p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .qr-container {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid #f6eee6;
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .qr-img-box {
      width: 100px;
      height: 100px;
      border: 1px solid #f0e1d5;
      padding: 4px;
      border-radius: 10px;
      background: #fff;
    }
    .qr-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 行业资讯文章列表 */
    .article-post-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-post-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-post-card:hover {
      transform: translateY(-3px);
      border-color: var(--border-hover);
      box-shadow: var(--card-shadow-hover);
    }
    .article-meta-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .article-title-link {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .article-title-link:hover {
      color: var(--primary-color);
    }
    .article-snippet {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .article-jump-btn {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #20232a;
      color: #a4abb8;
      padding: 60px 0 30px;
      font-size: 14px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 36px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 30px;
    }
    .footer-brand h4 {
      font-size: 20px;
      color: #ffffff;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .footer-brand p {
      line-height: 1.65;
      font-size: 13px;
      color: #9299a8;
      margin-bottom: 16px;
    }
    .footer-links-col h5 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links-col ul {
      list-style: none;
    }
    .footer-links-col ul li {
      margin-bottom: 10px;
    }
    .footer-links-col ul li a {
      color: #9299a8;
      font-size: 13px;
    }
    .footer-links-col ul li a:hover {
      color: #ff7e33;
    }
    .friendly-links-wrap {
      padding: 18px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      margin-bottom: 24px;
      font-size: 13px;
    }
    .friendly-links-wrap strong {
      color: #d1d5db;
      margin-right: 12px;
    }
    .friendly-links-wrap a {
      color: #9ca3af;
      margin-right: 16px;
      display: inline-block;
      margin-bottom: 6px;
    }
    .friendly-links-wrap a:hover {
      color: #ff7e33;
    }
    .footer-bottom-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
      color: #6b7280;
    }

    /* 浮动服务挂件 */
    .floating-widgets {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .widget-btn {
      width: 46px;
      height: 46px;
      background: #ffffff;
      border: 1px solid #ffd1b3;
      border-radius: 50%;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
      cursor: pointer;
      position: relative;
      transition: all 0.2s ease;
    }
    .widget-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
      transform: scale(1.06);
    }
    .widget-tooltip {
      position: absolute;
      right: 56px;
      top: 50%;
      transform: translateY(-50%);
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
      border-radius: 10px;
      padding: 12px;
      display: none;
      white-space: nowrap;
      color: var(--text-main);
    }
    .widget-btn:hover .widget-tooltip {
      display: block;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .metrics-bar { grid-template-columns: repeat(2, 1fr); }
      .step-timeline { grid-template-columns: repeat(2, 1fr); }
      .article-post-list { grid-template-columns: repeat(2, 1fr); }
      .footer-top-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .mobile-menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 16px 24px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
      }
      .nav-links.open { display: flex; }
      .nav-links li { width: 100%; }
      .nav-links li a { display: block; padding: 10px 0; }
      .header-actions { display: none; }
      .hero-h1 { font-size: 30px; }
      .hero-desc { font-size: 15px; }
      .grid-3 { grid-template-columns: 1fr; }
      .grid-2 { grid-template-columns: 1fr; }
      .grid-4 { grid-template-columns: 1fr; }
      .metrics-bar { grid-template-columns: 1fr; }
      .step-timeline { grid-template-columns: 1fr; }
      .article-post-list { grid-template-columns: 1fr; }
      .form-layout-wrap { grid-template-columns: 1fr; }
      .footer-top-grid { grid-template-columns: 1fr; }
      .evaluation-summary { flex-direction: column; text-align: center; }
      .score-block { flex-direction: column; }
    }