:root {
      --bg-base: #0a0614;
      --bg-surface: #130a24;
      --bg-elevated: #1e1138;
      --primary: #ff2a8d;
      --primary-glow: rgba(255, 42, 141, 0.4);
      --secondary: #9d4edd;
      --accent-cyan: #00f0ff;
      --text-main: #f5f0fb;
      --text-muted: #b8a8d0;
      --border-color: #381f5c;
      --border-glow: rgba(255, 42, 141, 0.35);
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 15% 10%, rgba(157, 78, 221, 0.18) 0%, transparent 40%),
        radial-gradient(circle at 85% 30%, rgba(255, 42, 141, 0.15) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
      background-attachment: fixed;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.25s ease;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 6, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }
    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: #fff;
    }
    .brand-name span {
      color: var(--primary);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.92rem;
      color: var(--text-muted);
      font-weight: 500;
      position: relative;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: #fff;
    }
    .nav-links li a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 14px;
      right: 14px;
      height: 2px;
      background: var(--primary);
      transform: scaleX(0);
      transition: transform 0.25s ease;
    }
    .nav-links li a:hover::after {
      transform: scaleX(1);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: 6px;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      white-space: nowrap;
      text-decoration: none;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, #d81159 100%);
      color: #fff;
      box-shadow: 0 4px 18px var(--primary-glow);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(255, 42, 141, 0.6);
      color: #fff;
    }
    .btn-outline {
      background: transparent;
      border-color: var(--secondary);
      color: #e0c8ff;
    }
    .btn-outline:hover {
      background: rgba(157, 78, 221, 0.15);
      color: #fff;
      border-color: var(--primary);
    }
    .btn-glow-large {
      padding: 14px 34px;
      font-size: 1.08rem;
      border-radius: 8px;
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      color: #fff;
      font-size: 1.5rem;
      cursor: pointer;
      padding: 4px;
    }
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      margin-bottom: 45px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--accent-cyan);
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(0, 240, 255, 0.08);
      border: 1px solid rgba(0, 240, 255, 0.2);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }
    .hero-section {
      padding: 90px 0 70px;
      text-align: center;
      position: relative;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 30px;
      background: rgba(255, 42, 141, 0.12);
      border: 1px solid rgba(255, 42, 141, 0.35);
      color: #ff94c6;
      font-size: 0.88rem;
      margin-bottom: 24px;
    }
    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 8px var(--primary);
    }
    .hero-title {
      font-size: 2.6rem;
      font-weight: 800;
      line-height: 1.25;
      color: #ffffff;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }
    .hero-title .highlight {
      background: linear-gradient(135deg, #ff2a8d 0%, #00f0ff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .model-ticker {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 960px;
      margin: 0 auto;
    }
    .model-chip {
      background: rgba(30, 17, 56, 0.7);
      border: 1px solid var(--border-color);
      color: #d1bfe8;
      font-size: 0.82rem;
      padding: 6px 14px;
      border-radius: 6px;
      transition: all 0.25s ease;
    }
    .model-chip:hover {
      border-color: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .stat-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 24px 18px;
      text-align: center;
      transition: transform 0.25s ease, border-color 0.25s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
    }
    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .service-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .service-card:hover {
      border-color: var(--primary);
      box-shadow: 0 8px 24px rgba(255, 42, 141, 0.15);
      transform: translateY(-4px);
    }
    .service-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(157, 78, 221, 0.15);
      border: 1px solid rgba(157, 78, 221, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 16px;
      color: var(--primary);
    }
    .service-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .service-brief {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .service-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: auto;
    }
    .service-tag {
      font-size: 0.76rem;
      padding: 3px 8px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: 4px;
      color: #cfbce6;
    }
    .two-col-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .media-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    }
    .media-card img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }
    .media-card:hover img {
      transform: scale(1.02);
    }
    .step-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .step-item {
      display: flex;
      gap: 16px;
      background: var(--bg-surface);
      padding: 18px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }
    .step-idx {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .step-content h3 {
      font-size: 1rem;
      color: #fff;
      margin-bottom: 4px;
    }
    .step-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .review-score-hero {
      background: linear-gradient(135deg, rgba(255, 42, 141, 0.12), rgba(157, 78, 221, 0.15));
      border: 1px solid var(--border-glow);
      border-radius: 12px;
      padding: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 30px;
    }
    .score-left h3 {
      font-size: 1.4rem;
      color: #fff;
      margin-bottom: 6px;
    }
    .score-left p {
      color: var(--text-muted);
      font-size: 0.92rem;
    }
    .score-right {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .score-big {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }
    .score-total {
      font-size: 1.1rem;
      color: var(--text-muted);
    }
    .rating-stars {
      color: #ffb703;
      font-size: 1.25rem;
      margin-left: 8px;
    }
    .table-container {
      overflow-x: auto;
      background: var(--bg-surface);
      border-radius: 10px;
      border: 1px solid var(--border-color);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }
    .compare-table th {
      background: rgba(30, 17, 56, 0.8);
      color: #fff;
      font-weight: 700;
    }
    .compare-table tr:hover td {
      background: rgba(255, 42, 141, 0.03);
    }
    .col-feature {
      font-weight: 600;
      color: #fff;
      width: 22%;
    }
    .col-highlight {
      background: rgba(255, 42, 141, 0.08);
      color: #ff84bc;
      font-weight: 600;
      width: 40%;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .avatar-char {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--secondary), var(--primary));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 1rem;
    }
    .author-info h4 {
      font-size: 0.98rem;
      color: #fff;
    }
    .author-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .review-body {
      font-size: 0.9rem;
      color: #dfd3ef;
      line-height: 1.65;
    }
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 26px;
    }
    .case-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
    }
    .case-img-wrap {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background: #110820;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .case-content {
      padding: 22px;
    }
    .case-title {
      font-size: 1.15rem;
      color: #fff;
      margin-bottom: 8px;
    }
    .case-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-header {
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-header h3 {
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      margin: 0;
    }
    .faq-arrow {
      color: var(--primary);
      font-size: 1.1rem;
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-content {
      padding: 0 22px 18px;
      display: none;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed rgba(255, 255, 255, 0.08);
      padding-top: 14px;
    }
    .faq-item.active .faq-content {
      display: block;
    }
    .form-wrapper {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 36px;
      max-width: 760px;
      margin: 0 auto;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      margin-bottom: 8px;
      font-size: 0.92rem;
      color: #fff;
      font-weight: 500;
    }
    .form-control {
      width: 100%;
      background: rgba(10, 6, 20, 0.7);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      padding: 12px 16px;
      font-size: 0.92rem;
      color: #fff;
      outline: none;
      transition: border-color 0.25s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 2px rgba(255, 42, 141, 0.2);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
    }
    .article-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 18px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.2s ease, border-color 0.2s ease;
    }
    .article-card:hover {
      transform: translateY(-3px);
      border-color: var(--primary);
    }
    .article-card h4 {
      font-size: 0.92rem;
      color: #fff;
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .article-card a {
      font-size: 0.82rem;
      color: var(--accent-cyan);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
    }
    .contact-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 30px;
    }
    .contact-card h3 {
      font-size: 1.3rem;
      color: #fff;
      margin-bottom: 20px;
    }
    .contact-items {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 26px;
    }
    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.94rem;
      color: #d1bfe8;
    }
    .contact-icon {
      width: 32px;
      height: 32px;
      border-radius: 6px;
      background: rgba(255, 42, 141, 0.12);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }
    .qrcode-box {
      display: flex;
      align-items: center;
      gap: 18px;
      background: rgba(10, 6, 20, 0.6);
      padding: 16px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }
    .qrcode-img-wrap {
      width: 90px;
      height: 90px;
      flex-shrink: 0;
      background: #fff;
      padding: 4px;
      border-radius: 4px;
    }
    .qrcode-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .qrcode-text h4 {
      font-size: 0.95rem;
      color: #fff;
      margin-bottom: 4px;
    }
    .qrcode-text p {
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    .friend-links-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 20px 24px;
      margin-bottom: 30px;
    }
    .friend-links-box h4 {
      font-size: 0.95rem;
      color: #fff;
      margin-bottom: 12px;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .friend-links-list a {
      font-size: 0.88rem;
      color: var(--text-muted);
      transition: color 0.2s ease;
    }
    .friend-links-list a:hover {
      color: var(--primary);
    }
    .site-footer {
      background: #06030c;
      border-top: 1px solid var(--border-color);
      padding: 30px 0 24px;
      color: #8f7da8;
      font-size: 0.86rem;
    }
    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }
    .footer-left {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .footer-left a {
      color: var(--text-muted);
    }
    .footer-left a:hover {
      color: #fff;
    }
    .float-widget {
      position: fixed;
      right: 22px;
      bottom: 28px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--bg-elevated);
      border: 1px solid var(--border-glow);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 4px 16px rgba(0,0,0,0.5);
      transition: all 0.25s ease;
      font-size: 1.1rem;
    }
    .float-btn:hover {
      background: var(--primary);
      box-shadow: 0 0 16px var(--primary);
      transform: translateY(-2px);
    }
    .float-qr-popover {
      position: absolute;
      right: 58px;
      bottom: 60px;
      background: var(--bg-surface);
      border: 1px solid var(--border-glow);
      border-radius: 8px;
      padding: 12px;
      width: 160px;
      text-align: center;
      display: none;
      box-shadow: 0 8px 24px rgba(0,0,0,0.6);
    }
    .float-qr-popover.active {
      display: block;
    }
    .float-qr-popover img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      display: block;
      margin-bottom: 6px;
    }
    .float-qr-popover span {
      font-size: 0.78rem;
      color: var(--text-muted);
    }
    @media (max-width: 992px) {
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .two-col-layout {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-surface);
        flex-direction: column;
        padding: 20px 0;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
    }
    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.9rem;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .cases-grid {
        grid-template-columns: 1fr;
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .review-score-hero {
        flex-direction: column;
        align-items: flex-start;
      }
    }