:root {
      --primary: #7c3aed;
      --primary-dark: #5b21b6;
      --primary-light: #8b5cf6;
      --primary-subtle: #f5f3ff;
      --accent: #d946ef;
      --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #ec4899 100%);
      --surface-card: #ffffff;
      --surface-soft: #faf8ff;
      --surface-tint: #f3e8ff;
      --text-main: #1e1b4b;
      --text-muted: #4b5563;
      --text-light: #6b7280;
      --border-color: #ede9fe;
      --border-focus: #c084fc;
      --shadow-sm: 0 2px 8px rgba(124, 58, 237, 0.06);
      --shadow-md: 0 8px 24px rgba(124, 58, 237, 0.1);
      --shadow-lg: 0 16px 40px rgba(124, 58, 237, 0.14);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: #faf9fd;
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(217, 70, 239, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(124, 58, 237, 0.05) 0%, transparent 40%);
      color: var(--text-main);
      line-height: 1.65;
      font-size: 15px;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    .container {
      width: 100%;
      max-width: 1200px;
      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(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 16px rgba(124, 58, 237, 0.04);
    }

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

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

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

    .brand-logo-wrap img {
      max-height: 38px;
      width: auto;
    }

    .brand-title-box {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 19px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      line-height: 1.2;
    }

    .brand-tag {
      font-size: 11px;
      color: var(--accent);
      font-weight: 600;
      letter-spacing: 0.5px;
    }

    .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: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: var(--accent-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(124, 58, 237, 0.28);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.38);
      color: #ffffff;
    }

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

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

    .btn-sm {
      padding: 6px 14px;
      font-size: 13px;
      border-radius: var(--radius-sm);
    }

    .nav-toggle-btn {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      color: var(--primary);
      cursor: pointer;
      padding: 6px;
    }

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

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

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 46px;
    }

    .section-badge {
      display: inline-block;
      padding: 5px 14px;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: var(--surface-tint);
      border: 1px solid var(--border-color);
      border-radius: 30px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.8px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 HERO 区域 (无图片纯CSS科技感) */
    .hero-section {
      padding: 70px 0 80px;
      background: linear-gradient(180deg, #f5f0ff 0%, #faf8ff 50%, #faf9fd 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-glow-1 {
      position: absolute;
      top: -100px;
      left: 10%;
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(168, 85, 247, 0.2) 0%, rgba(124, 58, 237, 0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      bottom: -60px;
      right: 12%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(236, 72, 153, 0.16) 0%, rgba(217, 70, 239, 0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-inner {
      text-align: center;
      position: relative;
      z-index: 2;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid var(--border-focus);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 13px;
      color: var(--primary-dark);
      font-weight: 600;
      box-shadow: var(--shadow-sm);
      margin-bottom: 22px;
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      background-color: #22c55e;
      border-radius: 50%;
      box-shadow: 0 0 8px #22c55e;
    }

    .hero-title {
      font-size: 38px;
      font-weight: 900;
      color: #1a0b36;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #6d28d9 0%, #9333ea 50%, #db2777 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 34px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 44px;
    }

    .hero-btn-main {
      padding: 14px 34px;
      font-size: 16px;
      font-weight: 700;
      letter-spacing: 0.3px;
    }

    .hero-btn-sec {
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 600;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .hero-metric-card {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 14px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .hero-metric-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }

    .metric-number {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: var(--surface-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 22px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }

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

    .card-icon {
      width: 46px;
      height: 46px;
      border-radius: 12px;
      background: var(--surface-tint);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 16px;
      font-weight: 800;
      border: 1px solid var(--border-color);
    }

    .card-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .card-text {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    /* 场景工坊标签样式卡片 */
    .workshop-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .workshop-tag {
      font-size: 11px;
      font-weight: 700;
      color: var(--accent);
      background: rgba(217, 70, 239, 0.08);
      padding: 3px 8px;
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 10px;
    }

    /* 平台模型展示徽章 */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-badge {
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-size: 13px;
      font-weight: 600;
      padding: 8px 16px;
      border-radius: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .model-badge:hover {
      background: var(--surface-tint);
      border-color: var(--primary);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }

    /* 对比评测高光卡片 */
    .rating-banner {
      background: linear-gradient(135deg, #fdf4ff 0%, #f5f3ff 100%);
      border: 2px solid var(--border-focus);
      border-radius: var(--radius-lg);
      padding: 32px;
      margin-bottom: 36px;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .rating-stars {
      font-size: 26px;
      color: #f59e0b;
      letter-spacing: 2px;
    }

    .rating-num {
      font-size: 42px;
      font-weight: 900;
      color: var(--primary-dark);
      line-height: 1;
    }

    .rating-max {
      font-size: 16px;
      color: var(--text-light);
      font-weight: 500;
    }

    .rating-text-box h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .rating-text-box p {
      font-size: 14px;
      color: var(--text-muted);
    }

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

    .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 var(--border-color);
    }

    .eval-table th {
      background: var(--surface-soft);
      font-weight: 700;
      color: var(--text-main);
    }

    .eval-table tr:hover td {
      background: rgba(245, 243, 255, 0.5);
    }

    .eval-highlight {
      color: var(--primary-dark);
      font-weight: 700;
      background: rgba(124, 58, 237, 0.04);
    }

    .tag-success {
      display: inline-block;
      padding: 3px 10px;
      border-radius: 20px;
      background: #dcfce7;
      color: #15803d;
      font-size: 12px;
      font-weight: 700;
    }

    /* 案例展示画廊 */
    .case-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

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

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

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: var(--surface-tint);
    }

    .case-img-wrap.square {
      aspect-ratio: 1 / 1;
    }

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

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-content {
      padding: 18px;
    }

    .case-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

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

    /* 评论卡片 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

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

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

    .testi-avatar-initial {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .testi-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

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

    /* FAQ 手风琴 */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

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

    .faq-header {
      padding: 18px 22px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
      font-weight: 700;
      color: var(--text-main);
      font-size: 15px;
    }

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

    .faq-content {
      padding: 0 22px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

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

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

    .faq-item.active .faq-content {
      padding: 0 22px 20px 22px;
      max-height: 300px;
    }

    /* 表单与需求匹配 */
    .form-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
      margin-bottom: 20px;
    }

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

    .form-label {
      display: block;
      font-size: 13.5px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #faf8ff;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
    }

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

    /* 联系我们与二维码卡片 */
    .contact-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      flex-wrap: wrap;
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      flex: 1;
      min-width: 280px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14.5px;
      color: var(--text-main);
    }

    .contact-item strong {
      color: var(--primary-dark);
      min-width: 90px;
    }

    .qr-box {
      text-align: center;
      padding: 16px;
      background: var(--surface-soft);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }

    .qr-box img {
      width: 130px;
      height: 130px;
      margin: 0 auto 8px;
      border-radius: var(--radius-sm);
    }

    .qr-box p {
      font-size: 12px;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 资讯与短代码占位展示 */
    .articles-block {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 14px;
    }

    .article-links-list li a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      background: var(--surface-soft);
      font-size: 13.5px;
      color: var(--text-main);
      border: 1px solid transparent;
    }

    .article-links-list li a:hover {
      background: var(--surface-tint);
      border-color: var(--border-focus);
      color: var(--primary-dark);
    }

    /* 页脚与友情链接 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 28px;
      color: var(--text-muted);
      font-size: 13.5px;
    }

    .footer-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 30px;
      flex-wrap: wrap;
      margin-bottom: 36px;
    }

    .footer-brand {
      max-width: 360px;
    }

    .footer-brand p {
      margin-top: 12px;
      line-height: 1.7;
    }

    .friend-links-box {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--border-color);
    }

    .friend-links-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links-wrap a {
      color: var(--text-muted);
      font-size: 13px;
    }

    .friend-links-wrap a:hover {
      color: var(--primary);
      text-decoration: underline;
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 22px;
      text-align: center;
      font-size: 12.5px;
      color: var(--text-light);
    }

    /* 浮动操作条与返回顶部 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 18px;
      cursor: pointer;
      transition: var(--transition);
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 30px;
      }
      .grid-4, .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .case-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        height: 64px;
      }
      .nav-toggle-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 12px;
      }
      .hero-title {
        font-size: 24px;
      }
      .grid-3, .grid-2, .grid-4, .case-gallery, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .contact-card-box {
        flex-direction: column;
        align-items: flex-start;
      }
    }