:root {
      --primary-yellow: #FFD200;
      --accent-yellow: #FFE853;
      --dark-yellow: #E5BD00;
      --text-dark: #121316;
      --text-gray: #4A4D57;
      --text-muted: #7A7E89;
      --bg-page: #FAF9F5;
      --bg-card: #FFFFFF;
      --bg-accent: #FFFDF0;
      --border-color: #EBE7D8;
      --border-dark: #121316;
      --shadow-sm: 0 2px 8px rgba(18, 19, 22, 0.04);
      --shadow-md: 0 8px 24px rgba(18, 19, 22, 0.08);
      --shadow-solid: 4px 4px 0px #121316;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --max-width: 1240px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-dark);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(250, 249, 245, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--border-dark);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
      display: block;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-dark);
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      background-color: var(--primary-yellow);
      color: var(--text-dark);
    }
    .header-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-header {
      background: var(--primary-yellow);
      color: var(--text-dark);
      border: 2px solid var(--border-dark);
      padding: 8px 18px;
      font-weight: 700;
      font-size: 14px;
      border-radius: var(--radius-sm);
      box-shadow: 2px 2px 0px var(--border-dark);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-header:hover {
      transform: translate(-1px, -1px);
      box-shadow: 3px 3px 0px var(--border-dark);
      background: var(--accent-yellow);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 2px solid var(--border-dark);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-weight: 700;
    }

    /* 首屏 Hero 无图片区 */
    .hero-section {
      padding: 64px 0 80px;
      background: radial-gradient(circle at 80% 20%, rgba(255, 210, 0, 0.25) 0%, transparent 50%),
                  radial-gradient(circle at 10% 80%, rgba(255, 232, 83, 0.3) 0%, transparent 40%);
      border-bottom: 2px solid var(--border-dark);
      position: relative;
    }
    .hero-badge-wrap {
      display: flex;
      justify-content: center;
      margin-bottom: 20px;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      padding: 6px 16px;
      border-radius: 99px;
      font-size: 13px;
      font-weight: 700;
      box-shadow: 2px 2px 0 var(--border-dark);
    }
    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10B981;
    }
    .hero-content {
      text-align: center;
      max-width: 980px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: clamp(30px, 4.5vw, 48px);
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -1px;
      color: var(--text-dark);
      margin-bottom: 24px;
    }
    .hero-title span {
      background: linear-gradient(180deg, transparent 65%, var(--primary-yellow) 65%);
      display: inline-block;
      padding: 0 4px;
    }
    .hero-desc {
      font-size: clamp(16px, 1.8vw, 19px);
      color: var(--text-gray);
      margin-bottom: 36px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 50px;
    }
    .btn-main-hero {
      background: var(--primary-yellow);
      color: var(--text-dark);
      border: 2px solid var(--border-dark);
      padding: 16px 36px;
      font-size: 18px;
      font-weight: 800;
      border-radius: var(--radius-sm);
      box-shadow: 4px 4px 0 var(--border-dark);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.2s ease;
    }
    .btn-main-hero:hover {
      transform: translate(-2px, -2px);
      box-shadow: 6px 6px 0 var(--border-dark);
      background: var(--accent-yellow);
    }
    .btn-sub-hero {
      background: var(--bg-card);
      color: var(--text-dark);
      border: 2px solid var(--border-dark);
      padding: 16px 32px;
      font-size: 17px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      box-shadow: 4px 4px 0 var(--border-dark);
    }
    .btn-sub-hero:hover {
      transform: translate(-2px, -2px);
      box-shadow: 6px 6px 0 var(--border-dark);
      background: #F4F4F6;
    }

    /* 首屏数据卡片(无图，纯CSS与数字指标) */
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }
    .metric-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px 16px;
      text-align: center;
      box-shadow: var(--shadow-solid);
      transition: transform 0.2s ease;
    }
    .metric-card:hover {
      transform: translateY(-4px);
    }
    .metric-number {
      font-size: 32px;
      font-weight: 900;
      color: var(--text-dark);
      margin-bottom: 6px;
      font-family: monospace, sans-serif;
    }
    .metric-number em {
      font-style: normal;
      color: #92400E;
      font-size: 20px;
    }
    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-gray);
    }

    /* 通用区块排版 */
    .section-block {
      padding: 80px 0;
      border-bottom: 2px solid var(--border-dark);
    }
    .section-block.bg-alt {
      background-color: var(--bg-accent);
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }
    .section-tag {
      display: inline-block;
      background: var(--primary-yellow);
      border: 2px solid var(--border-dark);
      color: var(--text-dark);
      font-size: 13px;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 14px;
      text-transform: uppercase;
      box-shadow: 2px 2px 0 var(--border-dark);
    }
    .section-title {
      font-size: clamp(24px, 3.2vw, 36px);
      font-weight: 900;
      color: var(--text-dark);
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-gray);
      line-height: 1.6;
    }

    /* 多模型生态徽章滚动/展示条 */
    .model-tags-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 30px;
    }
    .model-chip {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      padding: 8px 16px;
      font-size: 14px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      box-shadow: 2px 2px 0 var(--border-dark);
      transition: all 0.2s ease;
    }
    .model-chip:hover {
      background: var(--primary-yellow);
      transform: translateY(-2px);
    }

    /* 平台介绍网格 */
    .about-feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .about-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-solid);
      position: relative;
    }
    .about-card-icon {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: var(--primary-yellow);
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 18px;
      box-shadow: 2px 2px 0 var(--border-dark);
    }
    .about-card h3 {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--text-dark);
    }
    .about-card p {
      font-size: 15px;
      color: var(--text-gray);
      line-height: 1.6;
    }

    /* AIGC 服务与场景网格 (突出主打核心场景) */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }
    .service-item {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: 3px 3px 0 var(--border-dark);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-item:hover {
      transform: translateY(-4px);
      box-shadow: 5px 5px 0 var(--border-dark);
      border-color: var(--border-dark);
    }
    .service-head {
      margin-bottom: 14px;
    }
    .service-badge {
      font-size: 12px;
      background: var(--accent-yellow);
      border: 1px solid var(--border-dark);
      padding: 2px 8px;
      font-weight: 700;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 8px;
    }
    .service-item h3 {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .service-item p {
      font-size: 14px;
      color: var(--text-gray);
      line-height: 1.55;
    }
    .service-foot {
      margin-top: 18px;
      padding-top: 14px;
      border-top: 1px dashed var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      font-weight: 700;
    }

    /* 一站式制作与工作流 */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-solid);
      position: relative;
    }
    .step-num {
      font-size: 32px;
      font-weight: 900;
      color: var(--dark-yellow);
      line-height: 1;
      margin-bottom: 12px;
      font-family: monospace;
    }
    .step-box h3 {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .step-box p {
      font-size: 14px;
      color: var(--text-gray);
      line-height: 1.5;
    }

    /* 对比评测卡片与表格 */
    .compare-wrapper {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 6px 6px 0 var(--border-dark);
    }
    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: var(--primary-yellow);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px 28px;
      margin-bottom: 30px;
      box-shadow: 3px 3px 0 var(--border-dark);
      flex-wrap: wrap;
      gap: 16px;
    }
    .score-left h3 {
      font-size: 22px;
      font-weight: 900;
      color: var(--text-dark);
    }
    .score-left p {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
    }
    .score-right {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }
    .score-val {
      font-size: 44px;
      font-weight: 900;
      color: var(--text-dark);
      line-height: 1;
    }
    .score-max {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-dark);
    }
    .table-container {
      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: 1px solid var(--border-color);
      font-size: 14px;
    }
    .compare-table th {
      background: #F4F3ED;
      font-weight: 800;
      color: var(--text-dark);
      border-bottom: 2px solid var(--border-dark);
    }
    .compare-table tr:hover td {
      background: #FFFDE8;
    }
    .highlight-cell {
      background: #FFFBE0;
      font-weight: 700;
      color: var(--text-dark);
    }

    /* 案例展示区 (含素材图) */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-solid);
      display: flex;
      flex-direction: column;
    }
    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #EAE6D9;
      overflow: hidden;
      border-bottom: 2px solid var(--border-dark);
    }
    .case-img-wrap.square {
      aspect-ratio: 1 / 1;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }
    .case-info {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-info h3 {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .case-info p {
      font-size: 14px;
      color: var(--text-gray);
      margin-bottom: 12px;
      line-height: 1.5;
    }

    /* 宣传图画廊展示 (非首屏) */
    .banner-strip-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 40px;
    }
    .banner-holder {
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-solid);
      background: var(--bg-card);
    }
    .banner-holder img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 用户评论区 (6 条卡片) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: 4px 4px 0 var(--border-dark);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #E5BD00;
      font-size: 18px;
      margin-bottom: 10px;
    }
    .testi-text {
      font-size: 14px;
      color: var(--text-dark);
      line-height: 1.6;
      margin-bottom: 18px;
      font-style: italic;
    }
    .testi-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .testi-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-yellow);
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 16px;
    }
    .testi-meta h4 {
      font-size: 15px;
      font-weight: 800;
    }
    .testi-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 (不少于 10 条) */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      box-shadow: 2px 2px 0 var(--border-dark);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      padding: 18px 24px;
      background: none;
      border: none;
      text-align: left;
      font-size: 16px;
      font-weight: 800;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-question:hover {
      background: #FFFDE8;
    }
    .faq-icon {
      font-size: 18px;
      font-weight: 900;
      transition: transform 0.2s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #FAF8F0;
      border-top: 1px solid transparent;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px;
      border-top: 1px solid var(--border-color);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer p {
      font-size: 14px;
      color: var(--text-gray);
      line-height: 1.6;
    }

    /* 需求匹配与联系我们表单区 */
    .form-section-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }
    .form-intro-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 6px 6px 0 var(--border-dark);
    }
    .form-intro-card h3 {
      font-size: 24px;
      font-weight: 900;
      margin-bottom: 16px;
    }
    .form-intro-card p {
      font-size: 15px;
      color: var(--text-gray);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
      font-size: 15px;
      font-weight: 700;
    }
    .contact-item-icon {
      width: 36px;
      height: 36px;
      border-radius: 6px;
      background: var(--primary-yellow);
      border: 1px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .qr-showcase {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 2px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .qr-showcase img {
      width: 100px;
      height: 100px;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
    }
    .qr-text h4 {
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .qr-text p {
      font-size: 13px;
      color: var(--text-gray);
      margin-bottom: 0;
    }
    .lead-form-box {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 6px 6px 0 var(--border-dark);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      font-size: 15px;
      background: #FFFDF8;
      outline: none;
      transition: all 0.2s ease;
    }
    .form-control:focus {
      border-color: #B59300;
      box-shadow: 0 0 0 3px rgba(255, 210, 0, 0.4);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .btn-submit-form {
      width: 100%;
      background: var(--primary-yellow);
      color: var(--text-dark);
      border: 2px solid var(--border-dark);
      padding: 16px;
      font-size: 17px;
      font-weight: 800;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 4px 4px 0 var(--border-dark);
      transition: all 0.2s ease;
    }
    .btn-submit-form:hover {
      background: var(--accent-yellow);
      transform: translate(-1px, -1px);
      box-shadow: 5px 5px 0 var(--border-dark);
    }

    /* 行业资讯与文章链接区 */
    .news-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .article-block {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-solid);
    }
    .article-block h3 {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 16px;
      padding-bottom: 10px;
      border-bottom: 2px solid var(--border-dark);
    }
    .article-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .article-list li a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 14px;
      font-weight: 600;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      background: #FAF8F0;
      border: 1px solid var(--border-color);
    }
    .article-list li a:hover {
      background: var(--primary-yellow);
      border-color: var(--border-dark);
    }

    /* 页脚与友情链接 */
    .site-footer {
      background-color: #F3F1E7;
      border-top: 2px solid var(--border-dark);
      padding: 60px 0 30px;
      color: var(--text-dark);
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 18px;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list li a {
      font-size: 14px;
      color: var(--text-gray);
      font-weight: 600;
    }
    .footer-links-list li a:hover {
      color: var(--text-dark);
      text-decoration: underline;
    }
    .friend-links-box {
      padding-top: 24px;
      border-top: 1px solid #DFDBD0;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }
    .friend-links-box span {
      font-size: 13px;
      font-weight: 800;
      color: var(--text-dark);
    }
    .friend-links-box a {
      font-size: 13px;
      color: var(--text-gray);
      font-weight: 600;
      background: #FFF;
      padding: 4px 10px;
      border: 1px solid var(--border-color);
      border-radius: 4px;
    }
    .friend-links-box a:hover {
      border-color: var(--border-dark);
      background: var(--primary-yellow);
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      padding-top: 20px;
      border-top: 1px solid #DFDBD0;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 浮动客服入口 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .widget-btn {
      width: 48px;
      height: 48px;
      background: var(--primary-yellow);
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      box-shadow: 3px 3px 0 var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-weight: 900;
      font-size: 18px;
      transition: all 0.2s ease;
    }
    .widget-btn:hover {
      transform: scale(1.1);
      background: var(--accent-yellow);
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-feature-grid,
      .steps-timeline,
      .case-grid,
      .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-section-inner,
      .banner-strip-grid,
      .news-wrapper,
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--bg-card);
        border-bottom: 2px solid var(--border-dark);
        flex-direction: column;
        padding: 16px 0;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .mobile-menu-toggle {
        display: block;
      }
    }

    @media (max-width: 640px) {
      .hero-metrics-grid,
      .about-feature-grid,
      .steps-timeline,
      .case-grid,
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        text-align: center;
      }
      .score-right {
        margin: 0 auto;
      }
    }