:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-muted: #64748b;
      --neon-cyan: #06b6d4;
      --neon-magenta: #ec4899;
      --neon-purple: #8b5cf6;
      --neon-amber: #f59e0b;
      --border-light: rgba(148, 163, 184, 0.2);
      --neon-gradient: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 50%, #ec4899 100%);
      --neon-gradient-subtle: linear-gradient(135deg, rgba(6, 182, 212, 0.08) 0%, rgba(139, 92, 246, 0.08) 50%, rgba(236, 72, 153, 0.08) 100%);
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-neon: 0 10px 25px -5px rgba(139, 92, 246, 0.2), 0 8px 10px -6px rgba(6, 182, 212, 0.15);
      --radius-lg: 16px;
      --radius-md: 10px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 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", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    .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, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      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-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .logo-container {
      display: flex;
      align-items: center;
      max-height: 42px;
    }

    .logo-container img {
      max-height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      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 14px;
      color: var(--text-sub);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
      border-radius: 6px;
    }

    .nav-links li a:hover {
      color: var(--neon-purple);
      background: rgba(139, 92, 246, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.95rem;
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-neon {
      background: var(--neon-gradient);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
    }

    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      background: rgba(139, 92, 246, 0.08);
      transform: translateY(-2px);
    }

    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 首屏纯文字与几何亮彩 */
    .hero-section {
      position: relative;
      padding: 80px 0 60px;
      background: radial-gradient(circle at 50% 20%, rgba(6, 182, 212, 0.12), rgba(236, 72, 153, 0.06) 50%, transparent 80%);
      overflow: hidden;
      border-bottom: 1px solid var(--border-light);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid rgba(139, 92, 246, 0.25);
      box-shadow: 0 2px 8px rgba(139, 92, 246, 0.1);
      margin-bottom: 24px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--neon-purple);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background: var(--neon-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-cyan);
    }

    .hero-title {
      font-size: clamp(2rem, 4vw, 3.25rem);
      font-weight: 850;
      line-height: 1.25;
      color: var(--text-main);
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-title-gradient {
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: clamp(1rem, 1.8vw, 1.2rem);
      color: var(--text-sub);
      max-width: 820px;
      margin-bottom: 36px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 48px;
    }

    .btn-hero-official {
      padding: 14px 34px;
      font-size: 1.05rem;
      background: var(--neon-gradient);
      color: #ffffff;
      border-radius: 40px;
      box-shadow: 0 8px 24px rgba(236, 72, 153, 0.35);
      font-weight: 700;
    }

    .btn-hero-official:hover {
      box-shadow: 0 10px 30px rgba(6, 182, 212, 0.5);
      transform: translateY(-2px);
    }

    /* 亮彩数据看板 */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      margin-top: 10px;
    }

    .metric-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--neon-gradient);
      border-top-left-radius: var(--radius-md);
      border-bottom-left-radius: var(--radius-md);
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon);
      border-color: rgba(139, 92, 246, 0.3);
    }

    .metric-value {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .metric-value span {
      font-size: 1.1rem;
      color: var(--neon-magenta);
    }

    .metric-desc {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 通用区块排版 */
    .section-block {
      padding: 72px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      background: var(--neon-gradient-subtle);
      border: 1px solid rgba(139, 92, 246, 0.2);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--neon-purple);
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: clamp(1.6rem, 2.5vw, 2.25rem);
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-sub);
    }

    /* 平台核心模型跑马灯/标签云 */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }

    .model-tag {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
    }

    .model-tag:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 2px 10px rgba(6, 182, 212, 0.2);
      transform: translateY(-2px);
      color: var(--neon-purple);
    }

    /* 服务与能力卡片网格 */
    .grid-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
      gap: 24px;
    }

    .scene-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .scene-card:hover {
      border-color: rgba(236, 72, 153, 0.4);
      transform: translateY(-5px);
      box-shadow: 0 12px 28px -6px rgba(139, 92, 246, 0.15);
    }

    .scene-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--neon-gradient-subtle);
      border: 1px solid rgba(6, 182, 212, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--neon-purple);
      font-size: 1.25rem;
      font-weight: bold;
    }

    .scene-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .scene-card p {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .scene-meta {
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--neon-cyan);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 视觉素材展示区 */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
      margin-top: 32px;
    }

    .gallery-item {
      background: #ffffff;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .gallery-item:hover {
      box-shadow: var(--shadow-neon);
      transform: translateY(-4px);
    }

    .gallery-img-box {
      width: 100%;
      overflow: hidden;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .gallery-img-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .gallery-item:hover .gallery-img-box img {
      transform: scale(1.02);
    }

    .gallery-content {
      padding: 20px;
    }

    .gallery-content h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .gallery-content p {
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    /* 对比评测专属板块 */
    .eval-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid transparent;
      background-clip: padding-box;
      position: relative;
      padding: 36px 30px;
      box-shadow: var(--shadow-neon);
      margin-bottom: 36px;
    }

    .eval-box::after {
      content: "";
      position: absolute;
      top: -2px; right: -2px; bottom: -2px; left: -2px;
      background: var(--neon-gradient);
      border-radius: 18px;
      z-index: -1;
    }

    .eval-summary {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      padding-bottom: 24px;
      margin-bottom: 24px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }

    .eval-score {
      font-size: 3rem;
      font-weight: 900;
      color: var(--neon-magenta);
      line-height: 1;
    }

    .eval-max {
      font-size: 1.1rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .eval-verdict {
      font-size: 1rem;
      color: var(--text-sub);
      font-weight: 500;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

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

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

    .custom-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }

    .custom-table tr:hover td {
      background: rgba(139, 92, 246, 0.03);
    }

    .badge-highlight {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 12px;
      background: rgba(6, 182, 212, 0.12);
      color: #0891b2;
      font-weight: 600;
      font-size: 0.85rem;
    }

    /* 流程图步进 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }

    .step-item {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      position: relative;
    }

    .step-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: rgba(139, 92, 246, 0.25);
      line-height: 1;
      margin-bottom: 12px;
    }

    .step-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      padding: 26px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 0.95rem;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
      font-style: normal;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(226, 232, 240, 0.6);
      padding-top: 14px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--neon-gradient-subtle);
      border: 1px solid rgba(139, 92, 246, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--neon-purple);
      font-size: 1rem;
    }

    .author-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-item:hover {
      border-color: rgba(139, 92, 246, 0.4);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: transparent;
      border: none;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--neon-purple);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      color: var(--text-sub);
      font-size: 0.92rem;
      line-height: 1.65;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 20px;
    }

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

    /* 需求匹配与联系表单 */
    .form-container-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      padding: 40px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: 1 / -1;
    }

    .form-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border-radius: 8px;
      border: 1px solid #cbd5e1;
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
      background: #f8fafc;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--neon-purple);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
    }

    .form-textarea {
      resize: vertical;
      min-height: 120px;
    }

    /* 资讯文章与资源外链 */
    .article-links-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: var(--text-main);
      text-decoration: none;
      font-size: 0.92rem;
      padding: 8px 12px;
      border-radius: 6px;
      transition: var(--transition);
      border-left: 3px solid transparent;
    }

    .article-item-link:hover {
      background: rgba(6, 182, 212, 0.05);
      border-left-color: var(--neon-cyan);
      color: var(--neon-purple);
      transform: translateX(4px);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

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

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 0.88rem;
      line-height: 1.7;
      color: #94a3b8;
      margin-bottom: 16px;
    }

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

    .footer-links-list li a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.88rem;
      transition: var(--transition);
    }

    .footer-links-list li a:hover {
      color: #38bdf8;
      transform: translateX(3px);
      display: inline-block;
    }

    .footer-qr-box {
      width: 120px;
      background: #ffffff;
      padding: 8px;
      border-radius: 8px;
      margin-bottom: 10px;
    }

    .footer-qr-box img {
      width: 100%;
      height: auto;
      display: block;
    }

    .friend-links-bar {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-top: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      font-size: 0.85rem;
    }

    .friend-links-bar a {
      color: #94a3b8;
      text-decoration: none;
      transition: var(--transition);
    }

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

    .footer-bottom-bar {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服挂件 */
    .float-contact {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-purple);
      font-size: 1.25rem;
      cursor: pointer;
      text-decoration: none;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      background: var(--neon-gradient);
      color: #ffffff;
      transform: scale(1.08);
    }

    .qr-popup {
      position: absolute;
      right: 58px;
      bottom: 0;
      width: 150px;
      background: #ffffff;
      padding: 12px;
      border-radius: 12px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--border-light);
      display: none;
      text-align: center;
    }

    .qr-popup img {
      width: 100%;
      height: auto;
      margin-bottom: 6px;
    }

    .qr-popup span {
      font-size: 0.75rem;
      color: var(--text-sub);
      display: block;
    }

    .float-btn:hover .qr-popup {
      display: block;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 12px 16px;
        width: 100%;
      }
      .hero-section {
        padding: 50px 0 40px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-container-box {
        padding: 24px 18px;
      }
      .eval-box {
        padding: 24px 18px;
      }
      .float-contact {
        right: 16px;
        bottom: 20px;
      }
    }