:root {
      --bg-main: #0a0614;
      --bg-card: rgba(26, 16, 46, 0.7);
      --bg-card-hover: rgba(43, 24, 77, 0.85);
      --primary-pink: #ff2a8d;
      --primary-purple: #9d4edd;
      --accent-cyan: #00f0ff;
      --text-main: #ffffff;
      --text-sub: #d0c8e8;
      --text-muted: #958cb3;
      --border-glow: rgba(255, 42, 141, 0.35);
      --border-purple: rgba(157, 78, 221, 0.3);
      --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
      --pink-glow: 0 0 20px rgba(255, 42, 141, 0.4);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      outline: none;
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background: radial-gradient(circle at 50% 0%, #2b1055 0%, #0d061a 60%, #07030d 100%);
      min-height: 100vh;
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 6, 20, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-purple);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-box .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      filter: drop-shadow(0 0 8px rgba(255, 42, 141, 0.6));
    }
    .brand-title {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 1px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-tag {
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      color: #fff;
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      color: var(--text-sub);
      font-size: 14px;
      padding: 10px 14px;
      position: relative;
      font-weight: 500;
      display: inline-block;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: #fff;
      text-shadow: 0 0 10px var(--primary-pink);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-glow {
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      color: #fff;
      padding: 9px 20px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 600;
      border: 1px solid rgba(255, 255, 255, 0.3);
      box-shadow: 0 0 15px rgba(255, 42, 141, 0.4);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 25px rgba(255, 42, 141, 0.7);
      color: #fff;
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      color: var(--accent-cyan);
      border: 1px solid var(--accent-cyan);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-outline:hover {
      background: rgba(0, 240, 255, 0.15);
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
      color: #fff;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      color: #fff;
      font-size: 24px;
      cursor: pointer;
    }
    .hero-section {
      padding: 90px 0 60px;
      position: relative;
      text-align: center;
      overflow: hidden;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 42, 141, 0.12);
      border: 1px solid var(--primary-pink);
      padding: 6px 18px;
      border-radius: 50px;
      font-size: 13px;
      color: #ff94c7;
      margin-bottom: 24px;
      box-shadow: var(--pink-glow);
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 20px;
      text-shadow: 0 0 20px rgba(255, 42, 141, 0.3), 0 0 40px rgba(157, 78, 221, 0.2);
    }
    .hero-title span {
      background: linear-gradient(90deg, #ff2a8d, #c77dff, #00f0ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 17px;
      color: var(--text-sub);
      line-height: 1.8;
    }
    .hero-buttons {
      display: flex;
      justify-content: center;
      gap: 18px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }
    .hero-highlight-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .highlight-card {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 12px;
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      backdrop-filter: blur(8px);
    }
    .highlight-card:hover {
      border-color: var(--primary-pink);
      transform: translateY(-5px);
      box-shadow: 0 10px 25px rgba(255, 42, 141, 0.2);
    }
    .highlight-card .stat-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--accent-cyan);
      margin-bottom: 6px;
      text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    }
    .highlight-card .stat-label {
      font-size: 14px;
      color: var(--text-muted);
    }
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      margin-bottom: 45px;
    }
    .section-tag {
      color: var(--accent-cyan);
      font-size: 13px;
      letter-spacing: 2px;
      text-transform: uppercase;
      font-weight: 700;
      margin-bottom: 8px;
      display: block;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: #fff;
      position: relative;
      display: inline-block;
      margin-bottom: 12px;
    }
    .section-title::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background: linear-gradient(90deg, var(--primary-pink), var(--accent-cyan));
      border-radius: 2px;
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 12px auto 0;
    }
    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .ai-card {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 14px;
      padding: 26px;
      transition: var(--transition);
      backdrop-filter: blur(10px);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .ai-card:hover {
      border-color: var(--primary-pink);
      background: var(--bg-card-hover);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px rgba(255, 42, 141, 0.18);
    }
    .card-icon {
      width: 50px;
      height: 50px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(255, 42, 141, 0.2), rgba(157, 78, 221, 0.3));
      border: 1px solid var(--primary-pink);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      color: #fff;
      font-size: 22px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .card-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .card-footer-tag {
      font-size: 12px;
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-block;
      align-self: flex-start;
      border: 1px solid rgba(0, 240, 255, 0.2);
    }
    .model-tags-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      padding: 30px;
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 16px;
    }
    .model-chip {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #e2dcfa;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 500;
      transition: var(--transition);
    }
    .model-chip:hover {
      background: var(--primary-pink);
      color: #fff;
      border-color: var(--primary-pink);
      box-shadow: 0 0 12px rgba(255, 42, 141, 0.5);
      transform: scale(1.05);
    }
    .two-col-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .showcase-media {
      position: relative;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid var(--border-glow);
      box-shadow: var(--pink-glow);
    }
    .showcase-media img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.5s ease;
    }
    .showcase-media:hover img {
      transform: scale(1.03);
    }
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 12px;
      padding: 24px;
      position: relative;
    }
    .step-index {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-pink);
      margin-bottom: 10px;
      display: block;
      opacity: 0.9;
    }
    .rating-badge {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      background: linear-gradient(135deg, rgba(255, 42, 141, 0.2), rgba(157, 78, 221, 0.3));
      border: 1px solid var(--primary-pink);
      padding: 12px 28px;
      border-radius: 50px;
      margin-bottom: 24px;
      box-shadow: var(--pink-glow);
    }
    .stars {
      color: #ffd700;
      font-size: 20px;
      letter-spacing: 2px;
    }
    .score-text {
      font-size: 22px;
      font-weight: 800;
      color: #fff;
    }
    .score-text span {
      color: var(--accent-cyan);
    }
    .comparison-table-wrapper {
      overflow-x: auto;
      background: var(--bg-card);
      border: 1fr solid var(--border-purple);
      border-radius: 14px;
      padding: 10px;
      backdrop-filter: blur(10px);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .comparison-table th {
      background: rgba(255, 42, 141, 0.15);
      color: #fff;
      font-weight: 700;
    }
    .comparison-table tr:last-child td {
      border-bottom: none;
    }
    .comparison-table td.brand-col {
      color: var(--accent-cyan);
      font-weight: 600;
      background: rgba(255, 42, 141, 0.05);
    }
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 10px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--primary-pink);
    }
    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      color: #fff;
      font-size: 15px;
    }
    .faq-toggle-icon {
      font-size: 18px;
      color: var(--accent-cyan);
      transition: transform 0.3s;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--primary-pink);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 12px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 18px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: 16px;
    }
    .reviewer-name {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
    }
    .reviewer-role {
      font-size: 12px;
      color: var(--accent-cyan);
    }
    .form-wrapper {
      max-width: 760px;
      margin: 0 auto;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--pink-glow);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .form-full {
      grid-column: span 2;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-sub);
    }
    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      background: rgba(10, 6, 20, 0.8);
      border: 1px solid var(--border-purple);
      border-radius: 8px;
      padding: 12px 16px;
      color: #fff;
      font-size: 14px;
      transition: var(--transition);
    }
    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--primary-pink);
      box-shadow: 0 0 10px rgba(255, 42, 141, 0.3);
    }
    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }
    .banner-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 30px;
    }
    .banner-item {
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--border-purple);
    }
    .banner-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s;
    }
    .banner-item:hover img {
      transform: scale(1.05);
    }
    .articles-box {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 14px;
      padding: 24px;
    }
    .articles-links-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 16px;
      list-style: none;
    }
    .articles-links-list a {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 10px 14px;
      border-radius: 8px;
      font-size: 13px;
      color: var(--text-sub);
      display: block;
      text-overflow: ellipsis;
      overflow: hidden;
      white-space: nowrap;
    }
    .articles-links-list a:hover {
      border-color: var(--accent-cyan);
      color: #fff;
    }
    .site-footer {
      background: #06030b;
      border-top: 1px solid var(--border-purple);
      padding: 60px 0 30px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 18px;
      font-weight: 700;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list a {
      color: var(--text-sub);
    }
    .footer-links-list a:hover {
      color: var(--primary-pink);
    }
    .footer-qrcode {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }
    .footer-qrcode img {
      width: 100px;
      height: 100px;
      border-radius: 8px;
      border: 1px solid var(--border-glow);
    }
    .friend-links-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      font-size: 13px;
    }
    .friend-links-bar span {
      color: var(--text-muted);
    }
    .friend-links-bar a {
      color: var(--text-sub);
      margin-right: 8px;
    }
    .friend-links-bar a:hover {
      color: var(--accent-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
    }
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 4px 16px rgba(255, 42, 141, 0.5);
      border: none;
      transition: var(--transition);
      font-size: 18px;
    }
    .float-btn:hover {
      transform: scale(1.1);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.7);
    }
    .qr-popup {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #140b26;
      border: 1px solid var(--primary-pink);
      padding: 12px;
      border-radius: 10px;
      display: none;
      box-shadow: var(--pink-glow);
      text-align: center;
      width: 140px;
    }
    .qr-popup img {
      width: 100%;
      height: auto;
      border-radius: 6px;
      display: block;
    }
    .qr-popup span {
      display: block;
      font-size: 12px;
      color: #fff;
      margin-top: 6px;
    }
    .float-service-container:hover .qr-popup {
      display: block;
    }
    @media (max-width: 992px) {
      .card-grid, .card-grid-4, .workflow-steps, .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .two-col-showcase {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-title {
        font-size: 34px;
      }
      .hero-highlight-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #0e071e;
        flex-direction: column;
        padding: 20px 0;
        border-bottom: 1px solid var(--border-purple);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li a {
        padding: 12px 24px;
        width: 100%;
      }
      .hero-title {
        font-size: 26px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .card-grid, .card-grid-4, .workflow-steps, .review-grid, .banner-gallery {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .header-inner {
        position: relative;
      }
    }