:root {
      --primary: #e0245e;
      --primary-dark: #b81747;
      --primary-light: #fff0f5;
      --accent: #ff4d7e;
      --accent-subtle: #ffe6ef;
      --text-main: #1f2937;
      --text-muted: #4b5563;
      --text-light: #6b7280;
      --bg-page: #fdfafb;
      --bg-card: #ffffff;
      --border: #fce4ec;
      --shadow-sm: 0 4px 12px rgba(224, 36, 94, 0.05);
      --shadow-md: 0 10px 25px rgba(224, 36, 94, 0.08);
      --shadow-lg: 0 16px 36px rgba(224, 36, 94, 0.12);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    .main-container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }
    .brand-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 0;
    }
    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      padding: 10px 14px;
      border-radius: 6px;
      transition: var(--transition);
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }
    .header-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
      color: #ffffff !important;
      font-weight: 700;
      padding: 11px 24px;
      border-radius: 30px;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(224, 36, 94, 0.3);
      transition: var(--transition);
      font-size: 15px;
      white-space: nowrap;
    }
    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(224, 36, 94, 0.4);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-light);
      color: var(--primary) !important;
      font-weight: 700;
      padding: 11px 24px;
      border-radius: 30px;
      border: 1px solid var(--border);
      cursor: pointer;
      transition: var(--transition);
      font-size: 15px;
      white-space: nowrap;
    }
    .btn-secondary:hover {
      background: #ffe1eb;
      transform: translateY(-2px);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 3px;
      background: var(--text-main);
      margin: 4px 0;
      transition: 0.3s;
    }
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 80% 20%, #ffeaf1 0%, #ffffff 70%);
      border-bottom: 1px solid var(--border);
      position: relative;
      overflow: hidden;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      background: var(--primary-light);
      border: 1px solid var(--border);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 20px;
      margin-bottom: 20px;
      gap: 6px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }
    .hero-title span {
      color: var(--primary);
      display: inline;
    }
    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
      margin-bottom: 36px;
    }
    .hero-features-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      border-top: 1px dashed #f5c2d3;
      padding-top: 24px;
    }
    .hero-feat-item {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 600;
    }
    .hero-feat-item svg {
      width: 16px;
      height: 16px;
      fill: var(--primary);
    }
    .hero-card {
      background: #ffffff;
      border: 1px solid #ffd4e2;
      border-radius: 16px;
      padding: 32px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .hero-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      border-bottom: 1px solid var(--border);
      padding-bottom: 16px;
    }
    .hero-card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
    }
    .hero-card-tag {
      font-size: 12px;
      background: var(--primary-light);
      color: var(--primary);
      padding: 4px 10px;
      border-radius: 12px;
      font-weight: 600;
    }
    .model-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 24px;
    }
    .chip {
      background: #fff5f8;
      border: 1px solid #fedfe8;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary-dark);
      padding: 5px 10px;
      border-radius: 6px;
      transition: var(--transition);
    }
    .chip:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }
    .stat-mini-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      text-align: center;
      background: #fffbfc;
      border: 1px solid #fae6ec;
      border-radius: 10px;
      padding: 16px 10px;
    }
    .stat-mini-val {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
    }
    .stat-mini-lbl {
      font-size: 12px;
      color: var(--text-light);
      margin-top: 2px;
    }
    .section-wrap {
      padding: 64px 0;
      border-bottom: 1px solid #f9e2eb;
    }
    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 44px;
    }
    .section-subtitle {
      font-size: 13px;
      font-weight: 800;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .about-text p {
      margin-bottom: 18px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .feature-check-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
    }
    .feature-check-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }
    .feature-check-item svg {
      width: 18px;
      height: 18px;
      fill: var(--primary);
      flex-shrink: 0;
    }
    .about-img-box {
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid #f5cfdb;
      box-shadow: var(--shadow-md);
      background: #fff;
    }
    .about-img-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.5s ease;
    }
    .about-img-box:hover img {
      transform: scale(1.02);
    }
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .service-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #f7a8c3;
    }
    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--primary);
      flex-shrink: 0;
    }
    .service-icon svg {
      width: 24px;
      height: 24px;
      fill: currentColor;
    }
    .service-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-item {
      background: #fff;
      padding: 24px;
      border-radius: 12px;
      border: 1px solid var(--border);
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .step-item:hover {
      transform: translateY(-3px);
      border-color: var(--primary);
    }
    .step-num {
      width: 44px;
      height: 44px;
      line-height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
      color: #fff;
      font-weight: 800;
      margin: 0 auto 16px;
      font-size: 18px;
    }
    .step-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
    }
    .banner-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: center;
      margin-bottom: 32px;
    }
    .banner-box {
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid #f8cedb;
      box-shadow: var(--shadow-sm);
      background: #fff;
    }
    .banner-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }
    .banner-box:hover img {
      transform: scale(1.02);
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #fff;
      border: 1px solid #fedde7;
      border-radius: 12px;
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }
    .custom-table th {
      background: #fff5f8;
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 700;
      color: var(--primary-dark);
      border-bottom: 2px solid #ffd2df;
    }
    .custom-table td {
      padding: 16px 20px;
      font-size: 14px;
      border-bottom: 1px solid #fbe4ec;
      color: var(--text-muted);
    }
    .custom-table tr:hover {
      background: #fffbfc;
    }
    .highlight-score {
      font-weight: 800;
      color: var(--primary);
      font-size: 16px;
    }
    .rating-badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      background: #fff0f4;
      border: 1px solid #ffccd9;
      color: var(--primary);
      padding: 8px 16px;
      border-radius: 20px;
      font-weight: 800;
      font-size: 16px;
      margin-bottom: 20px;
    }
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 10px;
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: #f7a0be;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }
    .faq-toggle-icon {
      font-size: 20px;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid #ffeef4;
    }
    .faq-item.active .faq-answer {
      display: block;
      padding-top: 14px;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .testimonial-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      height: 100%;
      position: relative;
    }
    .testimonial-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .testimonial-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--primary);
      border: 1px solid #fec9d8;
      font-size: 16px;
    }
    .testimonial-meta h3 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .testimonial-meta p {
      font-size: 12px;
      color: var(--text-light);
    }
    .testimonial-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      font-style: italic;
    }
    .form-container {
      background: #ffffff;
      border: 1px solid #fcd2df;
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .form-control {
      padding: 12px 16px;
      border: 1px solid #fed2df;
      border-radius: 8px;
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      background: #fffbfc;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(224, 36, 94, 0.12);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .article-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }
    .article-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .article-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-top: 12px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .footer-block {
      background: #2a111a;
      color: #fed9e4;
      padding: 60px 0 30px;
      border-top: 3px solid var(--primary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 2px;
      background: var(--primary);
    }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a {
      color: #f7b4c8;
      font-size: 14px;
      transition: color 0.2s ease;
    }
    .footer-links-list a:hover {
      color: #ffffff;
    }
    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #f7b4c8;
      margin-bottom: 10px;
    }
    .footer-contact-item svg {
      width: 16px;
      height: 16px;
      fill: var(--accent);
      flex-shrink: 0;
    }
    .footer-qr {
      margin-top: 14px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .footer-qr img {
      width: 80px;
      height: 80px;
      border-radius: 6px;
      background: #fff;
      padding: 4px;
    }
    .footer-qr-text {
      font-size: 12px;
      color: #e59bb3;
      line-height: 1.4;
    }
    .friend-links-wrap {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      margin-bottom: 24px;
      font-size: 13px;
      color: #d18a9f;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .friend-links-wrap a {
      color: #f7b4c8;
      transition: color 0.2s ease;
    }
    .friend-links-wrap a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: #c07a90;
    }
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      transition: var(--transition);
      position: relative;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }
    .float-btn svg {
      width: 22px;
      height: 22px;
      fill: currentColor;
    }
    .float-qr-popover {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 8px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border);
      width: 140px;
      text-align: center;
      color: var(--text-main);
      font-size: 12px;
    }
    .float-qr-popover img {
      width: 100%;
      height: auto;
      margin-bottom: 6px;
      border-radius: 4px;
    }
    .float-btn:hover .float-qr-popover {
      display: block;
    }
    @media (max-width: 992px) {
      .hero-grid,
      .about-grid,
      .banner-gallery-grid {
        grid-template-columns: 1fr;
      }
      .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .card-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-title {
        font-size: 32px;
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border);
        display: none;
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
      }
      .nav-menu.open {
        display: flex;
      }
      .nav-links {
        flex-direction: column;
        width: 100%;
        align-items: stretch;
      }
      .nav-links li a {
        padding: 12px 16px;
      }
      .header-action {
        display: none;
      }
      .card-grid-4,
      .card-grid-3,
      .flow-steps,
      .footer-grid,
      .form-grid,
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .hero-title {
        font-size: 28px;
      }
      .section-title {
        font-size: 26px;
      }
    }