:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-light: #64748b;
      --neon-cyan: #06b6d4;
      --neon-emerald: #10b981;
      --neon-violet: #8b5cf6;
      --neon-pink: #ec4899;
      --border-color: rgba(6, 182, 212, 0.2);
      --card-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.08), 0 8px 10px -6px rgba(16, 185, 129, 0.05);
      --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;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      position: relative;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(6, 182, 212, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(139, 92, 246, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.04) 0%, transparent 60%);
      background-attachment: fixed;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(6, 182, 212, 0.2);
      box-shadow: 0 2px 15px 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;
    }

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

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

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

    .nav-links a {
      color: var(--text-main);
      text-decoration: none;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: 6px;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: var(--neon-cyan);
      background: rgba(6, 182, 212, 0.08);
    }

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

    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      text-decoration: none;
      border-radius: 30px;
      color: #ffffff;
      background: linear-gradient(135deg, #06b6d4, #3b82f6, #8b5cf6);
      box-shadow: 0 0 15px rgba(6, 182, 212, 0.45);
      transition: all 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .btn-glow:hover {
      box-shadow: 0 0 25px rgba(6, 182, 212, 0.7);
      transform: translateY(-2px);
      color: #ffffff;
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      text-decoration: none;
      border-radius: 30px;
      color: var(--neon-cyan);
      background: transparent;
      border: 1px solid var(--neon-cyan);
      transition: all 0.3s ease;
      cursor: pointer;
    }

    .btn-outline:hover {
      background: rgba(6, 182, 212, 0.1);
      box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 80px 0 60px;
      position: relative;
    }

    .hero-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
    }

    .neon-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(6, 182, 212, 0.1);
      border: 1px solid var(--neon-cyan);
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #0891b2;
      margin-bottom: 24px;
      box-shadow: 0 0 12px rgba(6, 182, 212, 0.2);
    }

    .neon-pill .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--neon-emerald);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-emerald);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.4); opacity: 0.6; }
    }

    .hero-title {
      font-size: clamp(2rem, 4vw, 2.75rem);
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
      max-width: 900px;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 760px;
      margin-bottom: 36px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
    }

    .hero-dashboard {
      width: 100%;
      background: #ffffff;
      border: 1px solid rgba(6, 182, 212, 0.3);
      border-radius: 16px;
      box-shadow: var(--card-shadow), 0 0 20px rgba(6, 182, 212, 0.1);
      padding: 24px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .stat-box {
      text-align: left;
      padding: 16px;
      border-radius: 12px;
      background: linear-gradient(180deg, #ffffff 0%, rgba(248, 250, 252, 0.8) 100%);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-left: 3px solid var(--neon-cyan);
    }

    .stat-title {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 6px;
    }

    .stat-number {
      font-size: 1.75rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .stat-unit {
      font-size: 0.85rem;
      color: var(--neon-cyan);
      font-weight: 600;
    }

    .stat-desc {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-top: 4px;
    }

    /* Section 通用 */
    .section-py {
      padding: 70px 0;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: #0891b2;
      background: rgba(6, 182, 212, 0.1);
      padding: 4px 14px;
      border-radius: 6px;
      margin-bottom: 12px;
      border: 1px solid rgba(6, 182, 212, 0.25);
    }

    .section-title {
      font-size: clamp(1.6rem, 2.5vw, 2.1rem);
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

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

    /* 平台介绍与关于我们 */
    .grid-2col {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      align-items: center;
    }

    .intro-card {
      background: var(--bg-card);
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      padding: 36px;
    }

    .intro-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .intro-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .intro-icon-box {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: rgba(6, 182, 212, 0.12);
      border: 1px solid var(--neon-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-weight: 700;
      color: #0891b2;
    }

    /* 场景卡片矩阵 */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: 14px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-violet));
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 15px 30px -5px rgba(6, 182, 212, 0.2);
      border-color: rgba(6, 182, 212, 0.4);
    }

    .service-card:hover::before {
      opacity: 1;
    }

    .service-badge {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 4px;
      background: rgba(139, 92, 246, 0.1);
      color: #6d28d9;
      margin-bottom: 12px;
    }

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

    .service-content {
      font-size: 0.9rem;
      color: var(--text-sub);
      flex-grow: 1;
      line-height: 1.55;
    }

    /* 模型标签云 */
    .model-tags-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 28px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 8px;
      background: rgba(241, 245, 249, 0.8);
      border: 1px solid rgba(203, 213, 225, 0.8);
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      background: rgba(6, 182, 212, 0.15);
      border-color: var(--neon-cyan);
      color: #0891b2;
      box-shadow: 0 0 8px rgba(6, 182, 212, 0.3);
      transform: scale(1.05);
    }

    /* 标准制作流程 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: var(--bg-card);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: 14px;
      padding: 24px;
      text-align: center;
      position: relative;
      box-shadow: var(--card-shadow);
    }

    .step-number {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-violet));
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 0 12px rgba(6, 182, 212, 0.4);
    }

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

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

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

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

    .case-desc {
      font-size: 0.88rem;
      color: var(--text-sub);
      margin-bottom: 14px;
      flex-grow: 1;
    }

    /* 评测与对比 */
    .review-summary-card {
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(139, 92, 246, 0.08));
      border: 1px solid var(--neon-cyan);
      border-radius: 16px;
      padding: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
    }

    .review-score-area {
      display: flex;
      align-items: center;
      gap: 20px;
    }

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

    .stars-icon {
      color: #eab308;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      box-shadow: var(--card-shadow);
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      font-size: 0.92rem;
    }

    .compare-table th {
      background: #f1f5f9;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table tr:hover {
      background: rgba(6, 182, 212, 0.03);
    }

    .tag-yes {
      display: inline-block;
      padding: 2px 8px;
      background: rgba(16, 185, 129, 0.12);
      color: #059669;
      font-weight: 700;
      border-radius: 4px;
      font-size: 0.8rem;
    }

    .tag-no {
      display: inline-block;
      padding: 2px 8px;
      background: rgba(239, 68, 68, 0.12);
      color: #dc2626;
      font-weight: 700;
      border-radius: 4px;
      font-size: 0.8rem;
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .comment-card {
      background: var(--bg-card);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: 14px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }

    .comment-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-violet));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }

    .user-name {
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.95rem;
    }

    .user-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    .comment-text {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

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

    .faq-item {
      background: var(--bg-card);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      transition: border-color 0.25s;
    }

    .faq-item.active {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 12px rgba(6, 182, 212, 0.15);
    }

    .faq-question {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      color: var(--text-main);
      user-select: none;
    }

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

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      color: var(--text-sub);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px 20px;
      border-top: 1px solid #edf2f7;
    }

    /* 表单与联系 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 18px;
      padding: 40px;
      box-shadow: var(--card-shadow);
    }

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

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 0.95rem;
      transition: border-color 0.2s, box-shadow 0.2s;
      background: #f8fafc;
      color: var(--text-main);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--neon-cyan);
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
      background: #ffffff;
    }

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

    .contact-info-panel {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .info-badge-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 20px;
    }

    .info-badge-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.92rem;
      color: var(--text-sub);
    }

    .info-badge-item strong {
      color: var(--text-main);
    }

    .qr-card-wrap {
      margin-top: 24px;
      display: flex;
      align-items: center;
      gap: 20px;
      padding: 16px;
      border-radius: 12px;
      background: rgba(6, 182, 212, 0.06);
      border: 1px solid rgba(6, 182, 212, 0.2);
    }

    .qr-card-wrap img {
      width: 100px;
      height: 100px;
      object-fit: cover;
      border-radius: 8px;
      border: 1px solid #e2e8f0;
      background: #ffffff;
    }

    /* 文章列表与友情链接 */
    .article-links-box, .friend-links-box {
      background: var(--bg-card);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: 12px;
      padding: 24px;
      margin-top: 20px;
    }

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

    .article-flex-list a, .friend-links-box a {
      color: #0891b2;
      text-decoration: none;
      font-size: 0.9rem;
      background: rgba(6, 182, 212, 0.08);
      padding: 6px 14px;
      border-radius: 6px;
      transition: all 0.2s ease;
      display: inline-block;
    }

    .article-flex-list a:hover, .friend-links-box a:hover {
      background: var(--neon-cyan);
      color: #ffffff;
      box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 2px solid var(--neon-cyan);
      box-shadow: 0 -10px 20px rgba(6, 182, 212, 0.05);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--neon-cyan);
    }

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

    .footer-col a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.88rem;
      transition: color 0.2s;
    }

    .footer-col a:hover {
      color: var(--neon-cyan);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      display: flex;
      flex-direction: column;
      gap: 8px;
      align-items: center;
    }

    /* 浮动客服 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--neon-cyan);
      box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: #0891b2;
      font-size: 1.2rem;
      transition: all 0.25s ease;
      text-decoration: none;
    }

    .floating-btn:hover {
      background: var(--neon-cyan);
      color: #ffffff;
      box-shadow: 0 0 20px var(--neon-cyan);
      transform: scale(1.1);
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .hero-dashboard {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        position: relative;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid #e2e8f0;
        padding: 16px 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 10px 0;
      }
      .header-actions .btn-outline {
        display: none;
      }
      .grid-2col, .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .cards-grid-3, .case-grid, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .review-summary-card {
        flex-direction: column;
        text-align: center;
        gap: 16px;
      }
      .review-score-area {
        flex-direction: column;
        gap: 8px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }