:root {
      --primary-color: #ff2a7a;
      --primary-hover: #e01b65;
      --primary-light: #fff0f5;
      --primary-gradient: linear-gradient(135deg, #ff2a7a 0%, #ff529a 100%);
      --accent-color: #9d174d;
      --text-dark: #1f2937;
      --text-body: #4b5563;
      --text-muted: #6b7280;
      --bg-light: #fff9fb;
      --bg-white: #ffffff;
      --border-color: #fce7f3;
      --card-shadow: 0 10px 25px -5px rgba(255, 42, 122, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
      --container-max: 1200px;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
    }
    * {
      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, sans-serif;
      background-color: var(--bg-light);
      color: var(--text-body);
      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;
    }
    header, main, footer {
      width: 100%;
    }
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(255, 42, 122, 0.05);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      text-decoration: none;
    }
    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }
    .brand-text {
      margin-left: 12px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--accent-color);
      letter-spacing: 0.5px;
    }
    .nav-container {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      gap: 0;
      list-style: none;
      align-items: center;
    }
    .nav-links li a {
      text-decoration: none;
      color: var(--text-dark);
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: color 0.2s, background-color 0.2s;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-color);
      background-color: var(--primary-light);
    }
    .nav-action-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: var(--primary-gradient);
      color: #ffffff;
      border-radius: 9999px;
      font-size: 0.9rem;
      font-weight: 600;
      text-decoration: none;
      box-shadow: 0 4px 12px rgba(255, 42, 122, 0.3);
      transition: transform 0.2s, box-shadow 0.2s;
      margin-left: 15px;
    }
    .nav-action-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(255, 42, 122, 0.4);
    }
    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      padding: 6px 10px;
      cursor: pointer;
      color: var(--primary-color);
      font-size: 1.25rem;
    }
    .section-padding {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background-color: var(--primary-light);
      color: var(--primary-color);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 9999px;
      margin-bottom: 12px;
      border: 1px solid rgba(255, 42, 122, 0.2);
    }
    .section-title {
      font-size: 2.1rem;
      color: var(--text-dark);
      font-weight: 800;
      margin-bottom: 15px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .hero-section {
      background: radial-gradient(circle at 10% 20%, #fff1f6 0%, #ffffff 90%);
      padding: 100px 0 80px;
      position: relative;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      background: #ffe4ee;
      border: 1px solid #fbcfe8;
      padding: 6px 18px;
      border-radius: 30px;
      color: var(--accent-color);
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 2.7rem;
      font-weight: 900;
      color: var(--text-dark);
      letter-spacing: -0.5px;
      line-height: 1.25;
      margin-bottom: 24px;
    }
    .hero-title span {
      color: var(--primary-color);
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-body);
      max-width: 780px;
      margin: 0 auto 36px auto;
      line-height: 1.8;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }
    .btn-primary-lg {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-gradient);
      color: #ffffff;
      padding: 15px 36px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 9999px;
      text-decoration: none;
      box-shadow: 0 10px 25px rgba(255, 42, 122, 0.4);
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .btn-primary-lg:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 28px rgba(255, 42, 122, 0.5);
    }
    .btn-outline-lg {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      color: var(--primary-color);
      border: 2px solid var(--primary-color);
      padding: 13px 32px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: 9999px;
      text-decoration: none;
      transition: background 0.25s, color 0.25s;
    }
    .btn-outline-lg:hover {
      background: var(--primary-light);
      color: var(--primary-hover);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .stat-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      text-align: center;
    }
    .stat-val {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .models-cloud {
      background: #ffffff;
      border: 1px dashed #f472b6;
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 36px;
      text-align: center;
    }
    .models-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 14px;
    }
    .tags-flex {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }
    .model-tag {
      background: var(--primary-light);
      color: var(--accent-color);
      padding: 4px 12px;
      border-radius: 6px;
      font-size: 0.8rem;
      font-weight: 600;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: transform 0.25s, box-shadow 0.25s;
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 30px rgba(255, 42, 122, 0.12);
      border-color: #f472b6;
    }
    .card-icon {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      color: var(--primary-color);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
    }
    .card-title {
      font-size: 1.25rem;
      color: var(--text-dark);
      font-weight: 700;
      margin-bottom: 12px;
    }
    .card-desc {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.6;
      flex-grow: 1;
    }
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      position: relative;
    }
    .step-badge {
      width: 36px;
      height: 36px;
      background: var(--primary-color);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 16px;
    }
    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-color);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .custom-table th {
      background: #fff1f6;
      color: var(--accent-color);
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 2px solid var(--border-color);
    }
    .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f9fafb;
      color: var(--text-body);
      font-size: 0.95rem;
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .custom-table tr:hover td {
      background-color: #fff9fb;
    }
    .badge-highlight {
      display: inline-block;
      padding: 3px 10px;
      background: #fdf2f8;
      border: 1px solid #fbcfe8;
      color: var(--primary-color);
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 600;
    }
    .review-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-user {
      display: flex;
      align-items: center;
      margin-bottom: 14px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      background: #ffe4ee;
      color: var(--primary-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin-right: 12px;
    }
    .review-name {
      font-weight: 700;
      color: var(--text-dark);
      font-size: 1rem;
    }
    .review-role {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .review-body {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .review-stars {
      color: #ff9800;
      font-size: 0.9rem;
    }
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }
    .faq-question {
      padding: 18px 24px;
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      outline: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-dark);
      cursor: pointer;
      transition: background-color 0.2s;
    }
    .faq-question:hover {
      background-color: var(--primary-light);
    }
    .faq-arrow {
      color: var(--primary-color);
      font-size: 1.2rem;
      transition: transform 0.3s;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background-color: #ffffff;
    }
    .faq-answer-inner {
      padding: 0 24px 20px 24px;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
    }
    .form-box {
      background: #ffffff;
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      color: var(--text-dark);
      font-size: 0.95rem;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #d1d5db;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
      background-color: #fafafa;
    }
    .form-control:focus {
      border-color: var(--primary-color);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(255, 42, 122, 0.15);
    }
    textarea.form-control {
      min-height: 120px;
      resize: vertical;
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      background: var(--primary-gradient);
      color: #ffffff;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(255, 42, 122, 0.3);
      transition: opacity 0.2s, transform 0.2s;
    }
    .form-submit-btn:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }
    .contact-card {
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .contact-info-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .contact-info-item {
      display: flex;
      align-items: center;
      margin-bottom: 16px;
      font-size: 0.95rem;
    }
    .contact-info-item strong {
      width: 100px;
      color: var(--text-dark);
    }
    .qr-container {
      text-align: center;
      background: var(--primary-light);
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px dashed var(--primary-color);
    }
    .qr-container img {
      max-width: 140px;
      height: auto;
      border-radius: var(--radius-sm);
      margin-bottom: 8px;
    }
    .qr-tip {
      font-size: 0.85rem;
      color: var(--accent-color);
      font-weight: 600;
    }
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      color: var(--text-dark);
      margin-bottom: 18px;
      font-weight: 700;
    }
    .footer-col p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.9rem;
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: var(--primary-color);
    }
    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .friend-links-wrap a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.85rem;
      background: #fdf2f8;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }
    .friend-links-wrap a:hover {
      color: var(--primary-color);
      border-color: #f472b6;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .media-card-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background-color: #f3f4f6;
      overflow: hidden;
    }
    .media-card-img-wrap.square {
      aspect-ratio: 1 / 1;
    }
    .media-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }
    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.03);
    }
    .media-card-body {
      padding: 20px;
    }
    .media-card-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .media-card-desc {
      font-size: 0.9rem;
      color: var(--text-body);
    }
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
      cursor: pointer;
      text-decoration: none;
      transition: transform 0.2s, background 0.2s;
    }
    .float-btn:hover {
      transform: scale(1.08);
      background: var(--primary-light);
    }
    @media (max-width: 992px) {
      .grid-4, .steps-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.05);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        border-bottom: 1px solid #fdf2f8;
      }
      .hero-title {
        font-size: 2rem;
      }
      .grid-2, .grid-3, .grid-4, .steps-container, .stats-grid {
        grid-template-columns: 1fr;
      }
      .section-padding {
        padding: 50px 0;
      }
    }