:root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --primary-light: #eff6ff;
      --accent: #06b6d4;
      --accent-warm: #f59e0b;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-subtle: #f1f5f9;
      --border-color: #e2e8f0;
      --border-focus: #3b82f6;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 20px 25px -5px rgba(37, 99, 235, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --container-max: 1200px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

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

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

    .section-padding {
      padding-top: 80px;
      padding-bottom: 80px;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      background-color: var(--primary-light);
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }

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

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

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

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

    .brand-logo img {
      max-height: 42px;
      width: auto;
    }

    .brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 24px;
    }

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
      transform: translateY(-1px);
    }

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

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

    .btn-accent {
      background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
    }

    .btn-accent:hover {
      opacity: 0.95;
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(6, 182, 212, 0.4);
    }

    .btn-lg {
      padding: 14px 32px;
      font-size: 1.05rem;
      border-radius: var(--radius-md);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    /* Hero 首屏 (无图片) */
    .hero-section {
      background: linear-gradient(180deg, #ffffff 0%, #f0f7ff 100%);
      padding: 80px 0 90px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #dbeafe;
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
      font-size: 0.9rem;
      color: var(--primary);
      font-weight: 600;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background-color: #10b981;
      border-radius: 50%;
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      padding: 24px 32px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      text-align: left;
    }

    .stat-item {
      border-right: 1px solid var(--border-color);
      padding-right: 20px;
    }

    .stat-item:last-child {
      border-right: none;
      padding-right: 0;
    }

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

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 4px;
      font-weight: 500;
    }

    /* 平台支持模型标签云 */
    .model-pills-bar {
      margin-top: 36px;
      text-align: center;
    }

    .model-pills-title {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-light);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 关于我们 / 平台能力卡片 */
    .about-section {
      background-color: #ffffff;
    }

    .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: 32px;
      align-items: center;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #bfdbfe;
    }

    .feature-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background-color: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 一站式创作场景大网格 */
    .services-section {
      background-color: var(--bg-subtle);
    }

    .service-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 22px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-box:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .service-box-header {
      margin-bottom: 12px;
    }

    .service-tag {
      font-size: 0.75rem;
      color: var(--accent);
      font-weight: 700;
      margin-bottom: 6px;
      display: inline-block;
    }

    .service-box h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .service-box p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 素材展示图文区 */
    .media-showcase-section {
      background-color: #ffffff;
    }

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

    .media-card-img-wrap {
      width: 100%;
      background-color: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-card-content {
      padding: 24px;
    }

    .media-card-content h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .media-card-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与卡片 */
    .compare-section {
      background-color: #ffffff;
    }

    .compare-header-box {
      background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 24px;
    }

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

    .compare-score-num {
      font-size: 3.5rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .compare-score-max {
      font-size: 1.2rem;
      color: #94a3b8;
    }

    .compare-stars {
      color: #fbbf24;
      font-size: 1.2rem;
      margin-top: 6px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

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

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

    .compare-table tr:last-child td {
      border-bottom: none;
    }

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

    /* 标准流程时间线 */
    .flow-section {
      background-color: var(--bg-subtle);
    }

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

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

    .step-number {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--primary-light);
      background: var(--primary);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 12px;
    }

    .flow-step-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .flow-step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 客户评论网格 */
    .reviews-section {
      background-color: #ffffff;
    }

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

    .review-body {
      font-size: 0.92rem;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: italic;
    }

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

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    /* FAQ 手风琴 */
    .faq-section {
      background-color: var(--bg-subtle);
    }

    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

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

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

    .faq-question {
      padding: 18px 20px;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.2s ease;
    }

    .faq-answer {
      padding: 0 20px 18px 20px;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
    }

    /* 最新文章与行业资讯 */
    .articles-section {
      background-color: #ffffff;
    }

    .article-card-row {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .article-item:hover {
      border-color: var(--primary);
      background-color: #f8fafc;
      transform: translateX(4px);
    }

    .article-title-link {
      font-weight: 600;
      color: var(--text-main);
      font-size: 0.98rem;
    }

    .article-title-link:hover {
      color: var(--primary);
    }

    .article-time {
      font-size: 0.85rem;
      color: var(--text-light);
      white-space: nowrap;
      margin-left: 16px;
    }

    /* 需求匹配与表单区 */
    .contact-form-section {
      background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
    }

    .form-box-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-lg);
    }

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

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background-color: #ffffff;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s ease;
    }

    .form-control:focus {
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    }

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

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }

    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-info-item strong {
      color: var(--text-muted);
      width: 90px;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

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

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links li a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

    .footer-links li a:hover {
      color: #38bdf8;
    }

    .friend-links-wrap {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-top: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .friend-links-title {
      color: #e2e8f0;
      font-size: 0.9rem;
      font-weight: 600;
    }

    .friend-links-wrap a {
      color: #94a3b8;
      font-size: 0.85rem;
    }

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

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: #64748b;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 浮动客服入口 */
    .float-kefu {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: flex-end;
    }

    .kefu-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
      cursor: pointer;
      font-size: 0.8rem;
      font-weight: 700;
      text-align: center;
      line-height: 1.1;
      transition: all 0.2s ease;
    }

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

    .kefu-popup {
      display: none;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: var(--shadow-lg);
      text-align: center;
      width: 180px;
      position: absolute;
      bottom: 64px;
      right: 0;
    }

    .kefu-popup img {
      width: 148px;
      height: 148px;
      margin: 0 auto 8px auto;
      border-radius: var(--radius-sm);
    }

    .kefu-popup p {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .float-kefu:hover .kefu-popup {
      display: block;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .section-padding {
        padding-top: 50px;
        padding-bottom: 50px;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .nav-links {
        display: none;
      }
      .nav-toggle {
        display: block;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        padding: 18px;
      }
      .stat-item:nth-child(2) {
        border-right: none;
      }
      .grid-3,
      .grid-4,
      .grid-2,
      .faq-grid,
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .compare-header-box {
        flex-direction: column;
        text-align: center;
      }
      .compare-score {
        justify-content: center;
      }
      .form-box-wrapper {
        padding: 24px;
      }
      .media-showcase-section .grid-2 {
        gap: 20px;
      }
    }