:root {
      --primary: #059669;
      --primary-light: #10b981;
      --primary-bright: #00d66c;
      --primary-soft: #eafaf1;
      --primary-dark: #065f46;
      --accent: #10b981;
      --dark: #12211b;
      --text: #233831;
      --text-muted: #566f65;
      --bg: #f5fbf7;
      --card-bg: #ffffff;
      --border: #d4ebd9;
      --shadow-sm: 0 4px 12px rgba(5, 150, 105, 0.05);
      --shadow-md: 0 10px 25px rgba(5, 150, 105, 0.08);
      --shadow-lg: 0 20px 40px rgba(5, 150, 105, 0.12);
      --radius: 12px;
      --radius-lg: 20px;
      --max-width: 1240px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.65;
      font-size: 15px;
      overflow-x: hidden;
    }

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

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

    /* 统一居中容器 */
    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .logo-container {
      max-height: 44px;
      display: flex;
      align-items: center;
    }

    .logo-container img {
      max-height: 44px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 19px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }

    /* 按照要求必须包含且gap为0 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 13px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
      border-radius: 6px;
      transition: color 0.2s, background-color 0.2s;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(5, 150, 105, 0.28);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(5, 150, 105, 0.35);
      color: #ffffff;
    }

    .btn-outline {
      border-color: var(--primary);
      color: var(--primary-dark);
      background: #ffffff;
    }

    .btn-outline:hover {
      background: var(--primary-soft);
      border-color: var(--primary-dark);
    }

    .btn-highlight {
      background: linear-gradient(135deg, #00d66c, #059669);
      color: #ffffff;
      font-weight: 700;
      box-shadow: 0 6px 20px rgba(0, 214, 108, 0.35);
    }

    .btn-highlight:hover {
      background: linear-gradient(135deg, #059669, #047857);
      transform: translateY(-2px);
      color: #ffffff;
    }

    .btn-lg {
      padding: 14px 30px;
      font-size: 16px;
      border-radius: 10px;
    }

    .mobile-menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 5px;
    }

    .mobile-menu-toggle span {
      width: 24px;
      height: 2px;
      background: var(--dark);
      transition: all 0.3s;
    }

    /* 首屏 Hero 区域：无任何图片，纯视觉与高交互感 */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.12) 0%, rgba(245, 251, 247, 0) 60%),
                  radial-gradient(circle at 20% 80%, rgba(0, 214, 108, 0.1) 0%, rgba(245, 251, 247, 0) 50%),
                  var(--bg);
      padding: 68px 0 60px;
      border-bottom: 1px solid var(--border);
      position: relative;
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary-bright);
      box-shadow: 0 0 10px var(--primary-bright);
    }

    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--dark);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary), #00ba5e);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 34px;
      line-height: 1.7;
      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: 44px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 10px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border);
      padding: 20px 16px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }

    .stat-val {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

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

    /* 模块通用样式 */
    .section {
      padding: 76px 0;
      position: relative;
    }

    .section-alt {
      background-color: #ffffff;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 52px;
    }

    .section-tag {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--primary);
      margin-bottom: 10px;
      display: inline-block;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 16px;
      line-height: 1.35;
    }

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

    /* 平台核心模型矩阵 */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-bottom: 30px;
    }

    .model-tag {
      background: #ffffff;
      border: 1px solid var(--border);
      padding: 8px 16px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      color: var(--dark);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: var(--shadow-sm);
    }

    .model-tag::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
    }

    /* 模块：卡片网格 */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }

    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-soft);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 24px;
      font-weight: 800;
    }

    .feature-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .feature-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .feature-foot {
      margin-top: 20px;
      padding-top: 14px;
      border-top: 1px dashed var(--border);
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    /* 一站式自动化创作板块 (横向双列排版) */
    .two-column-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 50px;
    }

    .two-column-block.reverse {
      direction: rtl;
    }

    .two-column-block.reverse > * {
      direction: ltr;
    }

    .block-text h3 {
      font-size: 26px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .block-text p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .bullet-list {
      list-style: none;
      margin-bottom: 24px;
    }

    .bullet-list li {
      position: relative;
      padding-left: 24px;
      margin-bottom: 10px;
      font-size: 14px;
      color: var(--text);
      font-weight: 500;
    }

    .bullet-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--primary);
      font-weight: bold;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .media-card img {
      border-radius: 12px;
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 对比评测专属板块 */
    .review-score-banner {
      background: linear-gradient(135deg, #064e3b, #047857);
      border-radius: var(--radius-lg);
      padding: 34px;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
      margin-bottom: 40px;
      box-shadow: var(--shadow-lg);
    }

    .review-score-left {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .score-circle {
      width: 86px;
      height: 86px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary-dark);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    }

    .score-num {
      font-size: 28px;
      line-height: 1;
    }

    .score-max {
      font-size: 12px;
      color: var(--text-muted);
    }

    .review-text-wrap h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 6px;
      color: #ffffff;
    }

    .review-text-wrap p {
      color: #d1fae5;
      font-size: 14px;
    }

    .star-badge {
      font-size: 20px;
      color: #fde047;
      letter-spacing: 2px;
    }

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

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

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

    .comparison-table th {
      background: #f0faf3;
      color: var(--dark);
      font-weight: 700;
    }

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

    .col-highlight {
      background: rgba(16, 185, 129, 0.05);
      color: var(--primary-dark);
      font-weight: 700;
    }

    .check-mark {
      color: var(--primary);
      font-weight: 800;
    }

    .cross-mark {
      color: #94a3b8;
    }

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

    .step-item {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: var(--primary-soft);
      color: var(--primary);
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      font-size: 16px;
    }

    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s;
    }

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

    .testimonial-body {
      font-size: 14px;
      color: var(--text);
      line-height: 1.7;
      margin-bottom: 18px;
      font-style: normal;
    }

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

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }

    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--dark);
    }

    .author-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 常见问题折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 10px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.2s;
    }

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

    .faq-question {
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 700;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

    .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: #fafdfb;
      padding: 0 22px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding: 14px 22px 20px;
      max-height: 300px;
    }

    /* 文章及动态 */
    .article-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 24px;
    }

    .article-item {
      background: #ffffff;
      border: 1px solid var(--border);
      padding: 16px 20px;
      border-radius: var(--radius);
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.2s;
    }

    .article-item:hover {
      border-color: var(--primary);
      transform: translateX(4px);
    }

    .article-title {
      font-weight: 600;
      color: var(--dark);
      font-size: 14px;
    }

    .article-tag {
      font-size: 12px;
      color: var(--primary);
      background: var(--primary-soft);
      padding: 3px 10px;
      border-radius: 4px;
    }

    /* 联系我们与表单板块 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 34px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-card h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 18px;
    }

    .contact-items {
      list-style: none;
      margin-bottom: 28px;
    }

    .contact-items li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 14px;
      color: var(--text);
    }

    .contact-item-icon {
      font-weight: bold;
      color: var(--primary);
      min-width: 20px;
    }

    .qr-showcase {
      display: flex;
      align-items: center;
      gap: 20px;
      padding: 16px;
      background: var(--primary-soft);
      border-radius: var(--radius);
      border: 1px dashed var(--border);
    }

    .qr-container {
      width: 96px;
      height: 96px;
      background: #ffffff;
      padding: 4px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .qr-container img {
      max-width: 100%;
      height: auto;
    }

    .qr-text h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 4px;
    }

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

    .form-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 34px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 14px;
      color: var(--text);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.12);
    }

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

    /* 友情链接与页脚 */
    .links-bar {
      padding: 24px 0;
      border-top: 1px solid var(--border);
      background: #ffffff;
    }

    .links-inner {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 13px;
    }

    .links-title {
      font-weight: 700;
      color: var(--dark);
    }

    .links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .links-list a {
      color: var(--text-muted);
      padding: 4px 8px;
      border-radius: 4px;
      background: var(--bg);
    }

    .links-list a:hover {
      color: var(--primary);
      background: var(--primary-soft);
    }

    .site-footer {
      background: #111e19;
      color: #9ab4aa;
      padding: 50px 0 24px;
      border-top: 1px solid rgba(255,255,255,0.08);
      font-size: 13px;
    }

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

    .footer-col h4 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }

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

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links li a {
      color: #9ab4aa;
    }

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

    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid rgba(255,255,255,0.06);
      text-align: center;
      color: #6d887d;
      font-size: 12px;
    }

    /* 悬浮客服面板 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary-dark);
      font-weight: 700;
      font-size: 13px;
      transition: all 0.25s ease;
    }

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

    .float-btn-primary {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .feature-grid,
      .testimonial-grid {
        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) {
      .header-inner {
        height: 64px;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: flex;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .two-column-block,
      .contact-layout {
        grid-template-columns: 1fr;
      }
      .two-column-block.reverse {
        direction: ltr;
      }
      .feature-grid,
      .testimonial-grid,
      .article-list {
        grid-template-columns: 1fr;
      }
      .step-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .review-score-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }