:root {
      --bg-base: #FAF8F5;
      --bg-card: #FFFFFF;
      --bg-alt: #F2EFE9;
      --text-main: #14171A;
      --text-muted: #59636E;
      --text-light: #8C95A0;
      --brand-blue: #0F52FF;
      --brand-orange: #FF4400;
      --brand-purple: #7928CA;
      --brand-yellow: #FFD200;
      --brand-teal: #00B96B;
      --brand-black: #0B0E14;
      --border-color: #14171A;
      --shadow-solid: 4px 4px 0px #14171A;
      --shadow-hover: 6px 6px 0px #14171A;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(250, 248, 245, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--border-color);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 16px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      flex-shrink: 0;
    }

    .brand-logo-box {
      max-width: 130px;
      height: 40px;
      display: flex;
      align-items: center;
    }

    .brand-logo-box img {
      max-height: 38px;
      width: auto;
      display: block;
    }

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

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

    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      color: var(--text-main);
      font-size: 14px;
      font-weight: 700;
      text-decoration: none;
      border-radius: var(--radius-sm);
      transition: all var(--transition-fast);
      white-space: nowrap;
    }

    .nav-links a:hover {
      background-color: var(--brand-yellow);
      color: var(--brand-black);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .btn-contrast-sm {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 16px;
      font-size: 13px;
      font-weight: 800;
      text-decoration: none;
      color: var(--brand-black);
      background-color: var(--brand-yellow);
      border: 2px solid var(--border-color);
      box-shadow: 2px 2px 0px var(--border-color);
      border-radius: var(--radius-sm);
      transition: all var(--transition-fast);
      cursor: pointer;
    }

    .btn-contrast-sm:hover {
      transform: translate(-2px, -2px);
      box-shadow: 4px 4px 0px var(--border-color);
    }

    .btn-primary-sm {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 16px;
      font-size: 13px;
      font-weight: 800;
      text-decoration: none;
      color: #FFFFFF;
      background-color: var(--brand-blue);
      border: 2px solid var(--border-color);
      box-shadow: 2px 2px 0px var(--border-color);
      border-radius: var(--radius-sm);
      transition: all var(--transition-fast);
      cursor: pointer;
    }

    .btn-primary-sm:hover {
      transform: translate(-2px, -2px);
      box-shadow: 4px 4px 0px var(--border-color);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: 2px solid var(--border-color);
      padding: 6px 10px;
      font-size: 18px;
      font-weight: bold;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    /* 模块通用定义 */
    section {
      padding-top: 64px;
      padding-bottom: 64px;
      border-bottom: 2px solid var(--border-color);
    }

    .section-head {
      margin-bottom: 40px;
      text-align: center;
    }

    .badge-tag {
      display: inline-block;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 0.5px;
      border-radius: 999px;
      border: 2px solid var(--border-color);
      box-shadow: 2px 2px 0px var(--border-color);
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .badge-orange { background-color: var(--brand-orange); color: #fff; }
    .badge-blue { background-color: var(--brand-blue); color: #fff; }
    .badge-yellow { background-color: var(--brand-yellow); color: var(--brand-black); }
    .badge-purple { background-color: var(--brand-purple); color: #fff; }
    .badge-teal { background-color: var(--brand-teal); color: #fff; }

    .section-title {
      font-size: 32px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--brand-black);
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 720px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.6;
    }

    /* 首屏 Hero 无图片纯色科技撞色 */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, rgba(255, 68, 0, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(15, 82, 255, 0.08) 0%, transparent 40%),
                  var(--bg-base);
      padding-top: 70px;
      padding-bottom: 70px;
      position: relative;
    }

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

    .hero-h1 {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.2;
      color: var(--brand-black);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-lead {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.6;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 16px 36px;
      font-size: 18px;
      font-weight: 900;
      color: #FFFFFF;
      background-color: var(--brand-orange);
      border: 3px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: 5px 5px 0px var(--border-color);
      text-decoration: none;
      transition: all var(--transition-fast);
      cursor: pointer;
    }

    .btn-hero-primary:hover {
      transform: translate(-3px, -3px);
      box-shadow: 8px 8px 0px var(--border-color);
      background-color: #E63D00;
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      padding: 16px 30px;
      font-size: 16px;
      font-weight: 800;
      color: var(--brand-black);
      background-color: var(--brand-yellow);
      border: 3px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: 5px 5px 0px var(--border-color);
      text-decoration: none;
      transition: all var(--transition-fast);
    }

    .btn-hero-secondary:hover {
      transform: translate(-3px, -3px);
      box-shadow: 8px 8px 0px var(--border-color);
    }

    /* 首屏数据指标卡片群（无图） */
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 36px;
    }

    .metric-card {
      background-color: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      box-shadow: var(--shadow-solid);
      transition: all var(--transition-fast);
      text-align: center;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .metric-number {
      font-size: 32px;
      font-weight: 900;
      color: var(--brand-blue);
      line-height: 1;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
    }

    /* 平台模型滚动条 */
    .model-ribbon {
      background-color: var(--brand-yellow);
      border-bottom: 2px solid var(--border-color);
      padding: 14px 0;
      overflow: hidden;
      white-space: nowrap;
    }

    .ribbon-track {
      display: inline-flex;
      gap: 24px;
      animation: marquee 28s linear infinite;
      font-weight: 900;
      font-size: 15px;
      color: var(--brand-black);
    }

    .ribbon-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .ribbon-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--brand-orange);
      border-radius: 50%;
      border: 1px solid var(--border-color);
    }

    @keyframes marquee {
      0% { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }

    /* 通用卡片容器 */
    .vivid-card {
      background-color: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-solid);
      transition: all var(--transition-fast);
      display: flex;
      flex-direction: column;
    }

    .vivid-card:hover {
      transform: translate(-3px, -3px);
      box-shadow: var(--shadow-hover);
    }

    /* AIGC 服务板块 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .service-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }

    .service-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      border: 2px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 900;
      flex-shrink: 0;
    }

    .service-title {
      font-size: 18px;
      font-weight: 800;
      color: var(--brand-black);
    }

    .service-body {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .service-foot {
      margin-top: 16px;
      padding-top: 12px;
      border-top: 1px dashed #D3D8DF;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      font-weight: 700;
    }

    /* 一站式创作特色 2x2 或 3 列 */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .step-num {
      width: 32px;
      height: 32px;
      background-color: var(--brand-black);
      color: #fff;
      font-weight: 900;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
    }

    /* 对比评测表格板块 */
    .eval-highlight-banner {
      background-color: #FFF6E5;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-solid);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 30px;
      flex-wrap: wrap;
    }

    .eval-score-block {
      display: flex;
      align-items: baseline;
      gap: 10px;
    }

    .eval-score-num {
      font-size: 48px;
      font-weight: 900;
      color: var(--brand-orange);
      line-height: 1;
    }

    .eval-stars {
      color: #F59E0B;
      font-size: 24px;
      letter-spacing: 2px;
    }

    .eval-table-wrapper {
      overflow-x: auto;
      background: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
    }

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

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #E2E8F0;
      vertical-align: middle;
    }

    .eval-table th {
      background-color: var(--bg-alt);
      font-weight: 900;
      color: var(--brand-black);
      border-bottom: 2px solid var(--border-color);
    }

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

    .tag-strong {
      display: inline-block;
      padding: 4px 8px;
      background-color: #E8F5E9;
      color: #1B5E20;
      border: 1px solid #81C784;
      font-weight: 800;
      border-radius: 4px;
    }

    /* 案例中心配图卡片 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .case-card {
      background-color: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-solid);
      transition: all var(--transition-fast);
      display: flex;
      flex-direction: column;
    }

    .case-card:hover {
      transform: translate(-3px, -3px);
      box-shadow: var(--shadow-hover);
    }

    .case-media-box {
      width: 100%;
      aspect-ratio: 16/9;
      background-color: var(--bg-alt);
      border-bottom: 2px solid var(--border-color);
      overflow: hidden;
    }

    .case-media-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-media-box img {
      transform: scale(1.04);
    }

    .case-info {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-tag {
      font-size: 12px;
      font-weight: 800;
      color: var(--brand-blue);
      margin-bottom: 6px;
    }

    .case-title {
      font-size: 17px;
      font-weight: 800;
      color: var(--brand-black);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 行业资讯与最新文章 */
    .article-layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }

    .article-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item {
      background-color: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      box-shadow: 2px 2px 0px var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
      text-decoration: none;
      color: var(--text-main);
      transition: all var(--transition-fast);
      gap: 12px;
    }

    .article-item:hover {
      background-color: #FFFDE6;
      transform: translateX(4px);
    }

    .article-title-text {
      font-size: 15px;
      font-weight: 700;
    }

    .article-badge {
      font-size: 12px;
      font-weight: 800;
      padding: 2px 8px;
      border: 1px solid var(--border-color);
      background-color: var(--brand-yellow);
      border-radius: 4px;
      white-space: nowrap;
    }

    /* 用户评论卡片 6 条 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .testi-card {
      background-color: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-solid);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-text {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: normal;
    }

    .testi-user {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 12px;
      border-top: 1px solid #ECEFF2;
    }

    .testi-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background-color: var(--brand-purple);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 15px;
      border: 2px solid var(--border-color);
    }

    .testi-info h4 {
      font-size: 14px;
      font-weight: 800;
      color: var(--brand-black);
    }

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

    /* FAQ 手风琴面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-card {
      background-color: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-solid);
      overflow: hidden;
    }

    .faq-trigger {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 800;
      color: var(--brand-black);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      gap: 12px;
    }

    .faq-icon {
      font-size: 18px;
      transition: transform var(--transition-fast);
      flex-shrink: 0;
    }

    .faq-content {
      padding: 0 20px 18px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      display: none;
    }

    .faq-card.active .faq-content {
      display: block;
    }

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

    /* 需求匹配与提交表单 */
    .form-box {
      max-width: 760px;
      margin: 0 auto;
      background-color: var(--bg-card);
      border: 3px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      box-shadow: 6px 6px 0px var(--border-color);
    }

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

    .form-group-full {
      grid-column: span 2;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 800;
      color: var(--brand-black);
      margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      font-size: 14px;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-sm);
      background-color: #FCFDFD;
      outline: none;
      transition: border-color var(--transition-fast);
      font-family: inherit;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--brand-blue);
      background-color: #fff;
    }

    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

    .btn-submit {
      width: 100%;
      padding: 16px;
      font-size: 17px;
      font-weight: 900;
      color: #fff;
      background-color: var(--brand-blue);
      border: 3px solid var(--border-color);
      border-radius: var(--radius-sm);
      box-shadow: 4px 4px 0px var(--border-color);
      cursor: pointer;
      transition: all var(--transition-fast);
    }

    .btn-submit:hover {
      background-color: #0040E0;
      transform: translate(-2px, -2px);
      box-shadow: 6px 6px 0px var(--border-color);
    }

    /* 加盟代理板块 */
    .partner-banner {
      background: linear-gradient(135deg, #FFF1EB 0%, #ACE0F9 100%);
      border: 3px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-solid);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      flex-wrap: wrap;
    }

    .partner-text-box h3 {
      font-size: 28px;
      font-weight: 900;
      margin-bottom: 10px;
      color: var(--brand-black);
    }

    .partner-text-box p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 600px;
    }

    /* 页脚区域严格规范 */
    .footer-section {
      background-color: #14171A;
      color: #E2E8F0;
      border-top: 3px solid var(--border-color);
      padding-top: 50px;
      padding-bottom: 30px;
      margin-top: auto;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      font-size: 20px;
      font-weight: 900;
      color: #FFFFFF;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      font-size: 15px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
      border-left: 3px solid var(--brand-yellow);
      padding-left: 8px;
    }

    .footer-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 13px;
      color: #CBD5E1;
    }

    .footer-list a {
      color: #CBD5E1;
      text-decoration: none;
      transition: color var(--transition-fast);
    }

    .footer-list a:hover {
      color: var(--brand-yellow);
    }

    .qrcode-box {
      width: 100px;
      background: #FFFFFF;
      padding: 6px;
      border-radius: var(--radius-sm);
      border: 1px solid #334155;
    }

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

    .friend-links-box {
      border-top: 1px solid #2D3748;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-title {
      font-size: 13px;
      font-weight: 800;
      color: #94A3B8;
      margin-bottom: 10px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    .friend-links-list a {
      color: #94A3B8;
      text-decoration: none;
      transition: color var(--transition-fast);
    }

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

    .footer-bottom {
      border-top: 1px solid #2D3748;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-bottom a {
      color: #64748B;
      text-decoration: none;
    }

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

    .kefu-btn {
      width: 48px;
      height: 48px;
      background-color: var(--brand-yellow);
      border: 2px solid var(--border-color);
      border-radius: 50%;
      box-shadow: 2px 2px 0px var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: bold;
      color: var(--brand-black);
      cursor: pointer;
      text-decoration: none;
      transition: transform var(--transition-fast);
    }

    .kefu-btn:hover {
      transform: scale(1.1);
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .services-grid, .testimonials-grid, .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-grid, .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .article-layout {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .nav-menu {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
    }

    @media (max-width: 640px) {
      .services-grid, .testimonials-grid, .case-grid, .workflow-grid, .hero-metrics-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
    }