:root {
      --candy-pink: #FF6B8B;
      --candy-purple: #845EC2;
      --candy-cyan: #00C9A7;
      --candy-yellow: #FFC75F;
      --candy-orange: #FF9671;
      --candy-blue: #4D8076;
      --candy-light: #FFFBF5;
      --candy-card-bg: #FFFFFF;
      --text-main: #2C3437;
      --text-muted: #64748B;
      --border-color: #F1E5E6;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-soft: 0 10px 30px rgba(255, 107, 139, 0.08);
      --shadow-hover: 0 16px 36px rgba(132, 94, 194, 0.14);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FAFAFD;
    }
    body {
      background: linear-gradient(180deg, #FFF5F7 0%, #F5F7FF 50%, #F4FAF8 100%);
      line-height: 1.6;
      overflow-x: hidden;
    }
    .site-container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 107, 139, 0.15);
      transition: all 0.3s ease;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }
    .brand-wrap .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }
    .brand-text {
      font-size: 22px;
      font-weight: 800;
      color: var(--candy-purple);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      text-decoration: none;
      color: var(--text-main);
      font-size: 14px;
      font-weight: 600;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--candy-pink);
      background: rgba(255, 107, 139, 0.08);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 99px;
      font-size: 14px;
      font-weight: 700;
      text-decoration: none;
      cursor: pointer;
      border: none;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-candy {
      background: linear-gradient(135deg, var(--candy-pink) 0%, var(--candy-purple) 100%);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(255, 107, 139, 0.35);
    }
    .btn-candy:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(132, 94, 194, 0.45);
      color: #FFFFFF;
    }
    .btn-candy-outline {
      border: 2px solid var(--candy-cyan);
      color: var(--candy-cyan);
      background: #FFFFFF;
    }
    .btn-candy-outline:hover {
      background: var(--candy-cyan);
      color: #FFFFFF;
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .nav-toggle span {
      display: block;
      width: 24px;
      height: 3px;
      background: var(--candy-purple);
      margin: 4px 0;
      border-radius: 2px;
      transition: 0.3s;
    }
    .section-spacing {
      padding: 80px 0;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--candy-purple);
      background: rgba(132, 94, 194, 0.12);
      padding: 6px 16px;
      border-radius: 99px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 10% 20%, rgba(255, 199, 95, 0.15) 0%, rgba(255, 107, 139, 0.08) 40%, rgba(132, 94, 194, 0.05) 90%);
      border-bottom: 1px solid rgba(255, 107, 139, 0.1);
    }
    .hero-wrap {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 1px solid rgba(255, 107, 139, 0.3);
      padding: 8px 18px;
      border-radius: 99px;
      font-size: 14px;
      font-weight: 600;
      color: var(--candy-pink);
      box-shadow: 0 4px 12px rgba(255, 107, 139, 0.1);
      margin-bottom: 24px;
    }
    .hero-h1 {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      color: #1E252B;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }
    .hero-h1 span {
      background: linear-gradient(120deg, var(--candy-pink), var(--candy-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 18px;
      color: #4A5568;
      max-width: 780px;
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-btns {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      justify-content: center;
      margin-bottom: 48px;
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      width: 100%;
    }
    .metric-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      text-align: center;
      transition: all 0.3s ease;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(132, 94, 194, 0.3);
    }
    .metric-card:nth-child(1) { border-top: 4px solid var(--candy-pink); }
    .metric-card:nth-child(2) { border-top: 4px solid var(--candy-purple); }
    .metric-card:nth-child(3) { border-top: 4px solid var(--candy-cyan); }
    .metric-card:nth-child(4) { border-top: 4px solid var(--candy-yellow); }
    .metric-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }
    .model-pill {
      background: #FFFFFF;
      border: 1px solid rgba(132, 94, 194, 0.2);
      border-radius: 99px;
      padding: 5px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--candy-purple);
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
      transition: all 0.2s;
    }
    .model-pill:hover {
      background: var(--candy-purple);
      color: #FFFFFF;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .candy-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .candy-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
      font-weight: bold;
    }
    .icon-pink { background: rgba(255, 107, 139, 0.15); color: var(--candy-pink); }
    .icon-purple { background: rgba(132, 94, 194, 0.15); color: var(--candy-purple); }
    .icon-cyan { background: rgba(0, 201, 167, 0.15); color: var(--candy-cyan); }
    .icon-orange { background: rgba(255, 150, 113, 0.15); color: var(--candy-orange); }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .step-box {
      background: #FFFFFF;
      padding: 24px 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      text-align: center;
      position: relative;
    }
    .step-badge {
      width: 36px;
      height: 36px;
      line-height: 36px;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-yellow));
      color: #FFFFFF;
      border-radius: 50%;
      font-weight: 800;
      margin: 0 auto 14px;
      font-size: 15px;
    }
    .step-name {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-detail {
      font-size: 13px;
      color: var(--text-muted);
    }
    .media-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
    }
    .media-thumb-box {
      width: 100%;
      overflow: hidden;
      background: #F0F4F8;
    }
    .media-thumb-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
      object-fit: contain;
    }
    .media-card:hover .media-thumb-box img {
      transform: scale(1.03);
    }
    .media-content {
      padding: 20px;
    }
    .media-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .media-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .table-container {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      overflow-x: auto;
    }
    .candy-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .candy-table th {
      background: #FDF9FB;
      color: var(--candy-purple);
      padding: 16px 20px;
      font-weight: 700;
      border-bottom: 1px solid var(--border-color);
      white-space: nowrap;
    }
    .candy-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      color: var(--text-main);
      vertical-align: middle;
    }
    .candy-table tr:hover td {
      background-color: #FFFDF9;
    }
    .highlight-cell {
      background: rgba(255, 107, 139, 0.05);
      font-weight: 700;
      color: var(--candy-pink);
    }
    .rate-banner {
      background: linear-gradient(135deg, #FFF5F7, #F5F1FD);
      border: 1px solid rgba(255, 107, 139, 0.2);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 28px;
      flex-wrap: wrap;
      gap: 16px;
    }
    .rate-stars {
      color: #FFB800;
      font-size: 24px;
      letter-spacing: 2px;
    }
    .rate-score {
      font-size: 32px;
      font-weight: 900;
      color: var(--candy-purple);
    }
    .form-wrapper {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #CBD5E1;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
      background: #FAFAFC;
    }
    .form-control:focus {
      border-color: var(--candy-purple);
      background: #FFFFFF;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
      overflow: hidden;
      transition: border-color 0.2s;
    }
    .faq-item:hover {
      border-color: var(--candy-purple);
    }
    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      font-weight: 700;
      font-size: 16px;
      color: var(--text-main);
    }
    .faq-icon {
      font-size: 18px;
      color: var(--candy-pink);
      transition: transform 0.3s ease;
    }
    .faq-content {
      padding: 0 24px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
      border-top: 1px dashed #F1E5E6;
      padding-top: 14px;
    }
    .faq-item.active .faq-content {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .comment-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .comment-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 18px;
    }
    .comment-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-cyan));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 800;
      font-size: 16px;
    }
    .comment-author {
      font-size: 15px;
      font-weight: 700;
    }
    .comment-role {
      font-size: 12px;
      color: var(--text-muted);
    }
    .comment-body {
      font-size: 14px;
      color: #475569;
      line-height: 1.6;
      font-style: italic;
    }
    .article-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 20px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      transition: all 0.2s;
    }
    .article-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: var(--candy-cyan);
    }
    .article-link {
      text-decoration: none;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      display: block;
      margin-bottom: 8px;
    }
    .article-link:hover {
      color: var(--candy-pink);
    }
    .article-badge {
      font-size: 11px;
      font-weight: 600;
      background: rgba(0, 201, 167, 0.12);
      color: var(--candy-cyan);
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
    }
    .contact-block {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      height: 100%;
    }
    .qr-box {
      width: 160px;
      height: 160px;
      border: 2px dashed var(--candy-pink);
      border-radius: var(--radius-sm);
      margin: 16px auto;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px;
      background: #FFF;
    }
    .qr-box img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    footer.site-footer {
      background: #20242C;
      color: #94A3B8;
      padding: 60px 0 30px;
      border-top: 4px solid var(--candy-pink);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 6px;
    }
    .footer-title::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--candy-yellow);
    }
    .footer-list {
      list-style: none;
    }
    .footer-list li {
      margin-bottom: 10px;
    }
    .footer-list a {
      color: #94A3B8;
      text-decoration: none;
      font-size: 14px;
      transition: color 0.2s;
    }
    .footer-list a:hover {
      color: var(--candy-yellow);
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }
    .friend-links a {
      color: #94A3B8;
      text-decoration: none;
      font-size: 13px;
      background: rgba(255, 255, 255, 0.05);
      padding: 4px 10px;
      border-radius: 4px;
      transition: all 0.2s;
    }
    .friend-links a:hover {
      background: var(--candy-purple);
      color: #FFFFFF;
    }
    .footer-bottom {
      text-align: center;
      font-size: 13px;
      color: #64748B;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #FFFFFF;
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--candy-purple);
      text-decoration: none;
      cursor: pointer;
      border: 1px solid rgba(132, 94, 194, 0.2);
      transition: all 0.2s;
    }
    .float-btn:hover {
      background: var(--candy-purple);
      color: #FFFFFF;
      transform: scale(1.08);
    }
    @media (max-width: 992px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .process-timeline { grid-template-columns: repeat(3, 1fr); }
      .hero-metrics { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-actions .btn-candy-outline { display: none; }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-toggle { display: block; }
      .hero-h1 { font-size: 28px; }
      .hero-lead { font-size: 15px; }
      .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
      .process-timeline { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .section-spacing { padding: 50px 0; }
      .form-wrapper { padding: 24px; }
    }