:root {
      --primary: #e6005c;
      --primary-hover: #c7004e;
      --primary-light: #ffe6f0;
      --primary-gradient: linear-gradient(135deg, #ff1a75 0%, #e6005c 50%, #99003d 100%);
      --text-main: #1f2329;
      --text-muted: #595f69;
      --text-light: #8f959e;
      --bg-page: #fff9fb;
      --bg-card: #ffffff;
      --border-color: #f7d2e0;
      --accent-gold: #e6a23c;
      --container-max: 1200px;
      --shadow-sm: 0 4px 12px rgba(230, 0, 92, 0.06);
      --shadow-md: 0 10px 25px rgba(230, 0, 92, 0.1);
      --shadow-lg: 0 18px 40px rgba(230, 0, 92, 0.14);
      --radius: 12px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .header-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .site-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .nav-menu-desktop {
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: 6px;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .nav-action-btns {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(230, 0, 92, 0.35);
    }

    .btn-primary:hover {
      box-shadow: 0 6px 20px rgba(230, 0, 92, 0.5);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: #ffffff;
      border-color: var(--primary);
      color: var(--primary) !important;
    }

    .btn-outline:hover {
      background: var(--primary-light);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

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

    .mobile-nav-panel {
      display: none;
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      padding: 16px 20px;
    }

    .mobile-nav-panel.active {
      display: block;
    }

    .mobile-nav-panel a {
      display: block;
      padding: 10px 0;
      font-size: 1rem;
      color: var(--text-main);
      border-bottom: 1px dashed #f2f2f2;
    }

    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(255, 26, 117, 0.12) 0%, transparent 60%),
                  radial-gradient(circle at 10% 80%, rgba(230, 0, 92, 0.08) 0%, transparent 50%),
                  #ffffff;
      padding: 70px 0 60px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-content {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      background: var(--primary-light);
      color: var(--primary);
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
      border: 1px solid var(--border-color);
      letter-spacing: 0.5px;
    }

    .hero-title {
      font-size: 2.55rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: var(--primary);
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
      text-align: left;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .stat-number {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .section-wrap {
      padding: 70px 0;
      border-bottom: 1px solid #fae8ef;
    }

    .section-wrap.alt-bg {
      background-color: #ffffff;
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 10px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
      border-color: var(--primary);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      color: var(--primary);
      font-weight: bold;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .card-text {
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .media-img-holder {
      width: 100%;
      background: #f7f7f7;
      overflow: hidden;
    }

    .media-img-holder img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .media-card:hover .media-img-holder img {
      transform: scale(1.04);
    }

    .media-body {
      padding: 22px;
    }

    .media-badge {
      display: inline-block;
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .chips-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 15px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-step {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
      text-align: left;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary-gradient);
      color: #fff;
      font-weight: bold;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #fae8ef;
    }

    .custom-table th {
      background-color: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.95rem;
    }

    .custom-table tr:hover td {
      background-color: #fffafc;
    }

    .badge-highlight {
      background: var(--primary-gradient);
      color: #fff;
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 0.78rem;
      font-weight: bold;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
    }

    .review-user {
      font-weight: 700;
      color: var(--text-main);
    }

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

    .review-rating {
      color: var(--accent-gold);
      font-size: 0.95rem;
    }

    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--primary);
    }

    .faq-question {
      padding: 18px 22px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      color: var(--text-main);
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary);
    }

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

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 22px;
      background: #fffdfd;
      color: var(--text-muted);
      font-size: 0.93rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding-bottom: 18px;
    }

    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 1px solid #dcdfe6;
      border-radius: 6px;
      outline: none;
      transition: var(--transition);
      background-color: #fff;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(230, 0, 92, 0.12);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
    }

    .contact-label {
      font-weight: bold;
      color: var(--text-main);
      min-width: 90px;
    }

    .qr-container {
      margin-top: 20px;
      padding: 16px;
      background: #fff;
      border: 1px dashed var(--border-color);
      border-radius: 8px;
      display: inline-block;
      text-align: center;
    }

    .qr-container img {
      width: 140px;
      height: 140px;
      object-fit: cover;
      margin: 0 auto 8px auto;
    }

    .article-link-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 14px 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }

    .article-item:hover {
      border-color: var(--primary);
      transform: translateX(4px);
    }

    .article-item a {
      font-weight: 500;
      color: var(--text-main);
    }

    .article-item a:hover {
      color: var(--primary);
    }

    .site-footer {
      background-color: #1a1618;
      color: #b0a8ad;
      padding: 50px 0 25px 0;
      margin-top: auto;
      border-top: 4px solid var(--primary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 35px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 30px;
      height: 2px;
      background: var(--primary);
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links a {
      color: #b0a8ad;
      font-size: 0.9rem;
    }

    .footer-links a:hover {
      color: #ffffff;
      padding-left: 4px;
    }

    .footer-bottom {
      border-top: 1px solid #2e262a;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.85rem;
    }

    .friend-links-area {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .friend-links-area a {
      color: #b0a8ad;
    }

    .friend-links-area a:hover {
      color: #ffffff;
    }

    .floating-contact {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(230, 0, 92, 0.35);
      cursor: pointer;
      transition: var(--transition);
      border: none;
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    @media (max-width: 992px) {
      .nav-menu-desktop {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .grid-4, .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .grid-3, .grid-2, .grid-4, .process-timeline, .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
        width: 100%;
      }
      .hero-actions .btn {
        width: 100%;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }