:root {
      --primary: #e6005c;
      --primary-dark: #b80049;
      --primary-light: #ffe6ef;
      --primary-accent: #ff3377;
      --secondary: #6366f1;
      --bg-body: #fcf9fa;
      --bg-white: #ffffff;
      --text-main: #1f2429;
      --text-muted: #59616d;
      --text-light: #8590a0;
      --border-color: #f0e1e6;
      --card-shadow: 0 10px 30px rgba(230, 0, 92, 0.06);
      --container-max: 1240px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.6;
      font-size: 16px;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }
    ul, ol {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-alt {
      background-color: #fbf5f7;
    }
    .sec-head {
      text-align: center;
      margin-bottom: 50px;
    }
    .badge-tag {
      display: inline-block;
      padding: 6px 14px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      border-radius: 30px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .sec-title {
      font-size: 32px;
      color: var(--text-main);
      font-weight: 800;
      line-height: 1.3;
    }
    .sec-desc {
      color: var(--text-muted);
      margin-top: 10px;
      font-size: 16px;
      max-width: 680px;
      margin-left: auto;
      margin-right: auto;
    }
    .site-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      box-shadow: 0 2px 15px rgba(0, 0, 0, 0.04);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      padding: 10px 14px;
      border-radius: 6px;
    }
    .nav-links a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }
    .nav-btns {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 6px;
      font-weight: 600;
      font-size: 14px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-accent));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(230, 0, 92, 0.25);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(230, 0, 92, 0.35);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: #ffffff;
    }
    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(255, 230, 240, 0.7) 0%, rgba(252, 249, 250, 0) 60%),
                  radial-gradient(circle at 10% 80%, rgba(255, 235, 242, 0.8) 0%, rgba(252, 249, 250, 0) 50%);
      padding: 90px 0 80px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-wrap {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 50px;
      align-items: center;
    }
    .hero-main h1 {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
    }
    .hero-main h1 span {
      color: var(--primary);
    }
    .hero-lead {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 30px;
    }
    .hero-action-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-top: 25px;
      border-top: 1px solid var(--border-color);
    }
    .metric-num {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
    }
    .metric-txt {
      font-size: 13px;
      color: var(--text-muted);
    }
    .hero-matrix-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 30px;
      box-shadow: 0 16px 36px rgba(230, 0, 92, 0.08);
      position: relative;
    }
    .matrix-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
    }
    .model-tags-box {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 20px;
    }
    .model-chip {
      background: var(--bg-body);
      border: 1px solid var(--border-color);
      padding: 5px 11px;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 600;
      color: var(--text-main);
      transition: all 0.2s ease;
    }
    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }
    .matrix-status-box {
      background: #fff9fb;
      border-left: 3px solid var(--primary);
      padding: 12px 14px;
      border-radius: 0 6px 6px 0;
      font-size: 13px;
      color: var(--text-muted);
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .feat-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary-accent);
      box-shadow: 0 16px 32px rgba(230, 0, 92, 0.12);
    }
    .feat-icon-bar {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 20px;
    }
    .feat-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .feat-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: 12px;
      text-align: center;
      position: relative;
    }
    .step-idx {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }
    .step-box h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-box p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .table-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow-x: auto;
      box-shadow: var(--card-shadow);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .custom-table th {
      background: #fff5f8;
      font-weight: 700;
      color: var(--text-main);
    }
    .custom-table tr:hover td {
      background-color: #fffcfd;
    }
    .tag-hot {
      color: var(--primary);
      font-weight: 700;
    }
    .rating-badge {
      display: inline-flex;
      align-items: center;
      background: #fff0f5;
      color: var(--primary);
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 800;
      font-size: 14px;
      gap: 6px;
    }
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .case-media-box {
      width: 100%;
      height: 220px;
      background: #f0e6eb;
      overflow: hidden;
    }
    .case-media-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-media-box img {
      transform: scale(1.04);
    }
    .case-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .case-body h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .case-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--card-shadow);
    }
    .rev-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .rev-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #ffa3c2);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .rev-user {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .rev-role {
      font-size: 12px;
      color: var(--text-muted);
    }
    .rev-stars {
      color: #ff9800;
      font-size: 13px;
      margin-bottom: 10px;
    }
    .rev-text {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-question {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 16px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      color: var(--text-main);
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      font-size: 20px;
      transition: transform 0.3s ease;
      color: var(--primary);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #fffcfd;
      font-size: 14px;
      color: var(--text-muted);
      padding: 0 24px;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px 24px;
      border-top: 1px solid #faeef2;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }
    .contact-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 36px;
      box-shadow: var(--card-shadow);
    }
    .contact-panel h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .contact-details {
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
      font-size: 14px;
    }
    .contact-detail-row {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .contact-label {
      font-weight: 700;
      color: var(--text-main);
      min-width: 90px;
    }
    .qr-container {
      display: flex;
      gap: 20px;
      margin-top: 20px;
      padding-top: 20px;
      border-top: 1px solid var(--border-color);
    }
    .qr-card {
      text-align: center;
      font-size: 12px;
      color: var(--text-muted);
    }
    .qr-card img {
      width: 110px;
      height: 110px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 8px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 14px;
      background: #fffcfd;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.25s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #fff;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .articles-bar {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 20px;
      margin-top: 40px;
    }
    .articles-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .articles-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
    }
    .articles-links a {
      background: var(--bg-body);
      padding: 6px 12px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }
    .articles-links a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }
    .footer-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .footer-cols {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 30px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-col a:hover {
      color: var(--primary);
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 8px;
    }
    .friend-links a {
      color: var(--text-muted);
    }
    .friend-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid #f4e8ed;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--text-light);
    }
    .float-dock {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }
    .dock-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 12px rgba(230, 0, 92, 0.2);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      font-size: 18px;
      font-weight: 700;
      transition: transform 0.25s ease, background-color 0.25s ease;
    }
    .dock-btn:hover {
      transform: scale(1.08);
      background: var(--primary);
      color: #ffffff;
    }
    @media (max-width: 992px) {
      .hero-wrap {
        grid-template-columns: 1fr;
      }
      .features-grid, .cases-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-cols {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        display: none;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 10px 0;
      }
      .hero-main h1 {
        font-size: 28px;
      }
      .features-grid, .cases-grid, .reviews-grid, .flow-steps {
        grid-template-columns: 1fr;
      }
      .footer-cols {
        grid-template-columns: 1fr;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
    }