:root {
      --bg-base: #f7f9fe;
      --bg-surface: #ffffff;
      --bg-elevated: #f0f4fd;
      --primary: #5c2df5;
      --secondary: #00d2ff;
      --accent: #ff007a;
      --accent-warm: #ff8a00;
      --text-main: #131722;
      --text-muted: #56617a;
      --text-light: #8994a9;
      --border-subtle: #e2e8f5;
      --border-focus: #b983ff;
      --shadow-sm: 0 4px 12px rgba(92, 45, 245, 0.06);
      --shadow-md: 0 10px 30px rgba(92, 45, 245, 0.10);
      --shadow-neon: 0 0 20px rgba(0, 210, 255, 0.35), 0 0 35px rgba(255, 0, 122, 0.2);
      --gradient-brand: linear-gradient(135deg, #ff007a 0%, #7928ca 50%, #00d2ff 100%);
      --gradient-subtle: linear-gradient(180deg, #ffffff 0%, #f4f7ff 100%);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --container-max: 1200px;
      --transition-default: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 15%, rgba(0, 210, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 40%, rgba(255, 0, 122, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(92, 45, 245, 0.07) 0%, transparent 50%);
      background-attachment: fixed;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-default);
    }
    ul, ol {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-container {
      width: 100%;
      max-width: var(--container-max);
      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, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
      transition: var(--transition-default);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 1.3rem;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .brand-logo-wrap img.ai-page-logo {
      height: 40px;
      width: auto;
    }
    .brand-neon-text {
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 900;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-link-item {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.94rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-link-item:hover,
    .nav-link-item.active {
      color: var(--primary);
      background: rgba(92, 45, 245, 0.05);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 999px;
      color: #fff;
      background: var(--gradient-brand);
      box-shadow: 0 4px 15px rgba(255, 0, 122, 0.3);
      border: none;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--transition-default);
    }
    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-neon);
      color: #fff;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 999px;
      color: var(--primary);
      background: #fff;
      border: 1px solid var(--border-focus);
      box-shadow: var(--shadow-sm);
      cursor: pointer;
      transition: var(--transition-default);
    }
    .btn-outline:hover {
      background: rgba(92, 45, 245, 0.04);
      border-color: var(--primary);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }
    .section-spacing {
      padding-top: 80px;
      padding-bottom: 80px;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px auto;
    }
    .badge-pill {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      border-radius: 999px;
      background: rgba(92, 45, 245, 0.08);
      color: var(--primary);
      border: 1px solid rgba(92, 45, 245, 0.2);
      margin-bottom: 16px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }
    .hero-section {
      padding-top: 90px;
      padding-bottom: 80px;
      text-align: center;
      position: relative;
    }
    .hero-glow-blob {
      position: absolute;
      width: 400px;
      height: 400px;
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.2), rgba(255, 0, 122, 0.2));
      filter: blur(80px);
      border-radius: 50%;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      z-index: -1;
      pointer-events: none;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 24px;
      color: var(--text-main);
    }
    .hero-gradient-text {
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }
    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px auto;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-cta-group .btn-neon {
      padding: 14px 34px;
      font-size: 1.05rem;
    }
    .hero-cta-group .btn-outline {
      padding: 13px 30px;
      font-size: 1.05rem;
    }
    .hero-stats-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-md);
      max-width: 1000px;
      margin: 0 auto;
    }
    .hero-stat-card {
      text-align: center;
      border-right: 1px solid var(--border-subtle);
    }
    .hero-stat-card:last-child {
      border-right: none;
    }
    .hero-stat-num {
      font-size: 2.1rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .hero-stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .model-tags-bar {
      margin-top: 40px;
      padding: 20px;
      background: rgba(255, 255, 255, 0.7);
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-focus);
    }
    .model-tags-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .model-tags-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }
    .model-tag-item {
      font-size: 0.82rem;
      padding: 4px 12px;
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 6px;
      color: var(--text-muted);
      font-weight: 500;
      transition: var(--transition-default);
    }
    .model-tag-item:hover {
      border-color: var(--secondary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .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;
    }
    .glass-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-default);
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .glass-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      background: linear-gradient(135deg, rgba(255, 0, 122, 0.1), rgba(92, 45, 245, 0.1));
      color: var(--primary);
    }
    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .card-list-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: auto;
    }
    .card-mini-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 4px;
      background: var(--bg-elevated);
      color: var(--text-muted);
    }
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .flow-step-box {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      text-align: center;
      position: relative;
    }
    .flow-step-num {
      width: 32px;
      height: 32px;
      line-height: 32px;
      background: var(--gradient-brand);
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      margin: 0 auto 12px auto;
      font-size: 0.9rem;
    }
    .flow-step-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .flow-step-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .custom-table th, 
    .custom-table td {
      padding: 18px 20px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .custom-table th {
      background: #fafbff;
      font-weight: 700;
      color: var(--text-main);
      white-space: nowrap;
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .custom-table td.highlight-col {
      background: rgba(92, 45, 245, 0.03);
      font-weight: 600;
      color: var(--primary);
    }
    .score-badge-card {
      background: var(--gradient-brand);
      color: #ffffff;
      padding: 30px;
      border-radius: var(--radius-lg);
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-badge-left h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 6px;
    }
    .score-badge-left p {
      opacity: 0.9;
      font-size: 1rem;
    }
    .score-badge-val {
      text-align: right;
    }
    .score-big {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1;
    }
    .score-star {
      color: #ffd700;
      font-size: 1.3rem;
      margin-top: 4px;
    }
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .media-card-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #eee;
    }
    .media-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.05);
    }
    .media-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .media-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .media-card-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .article-links-panel {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
    }
    .article-links-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 16px;
    }
    .article-link-anchor {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 16px;
      background: var(--bg-base);
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-main);
    }
    .article-link-anchor:hover {
      border-color: var(--primary);
      background: #ffffff;
      color: var(--primary);
      transform: translateX(4px);
    }
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
      transition: var(--transition-default);
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-question::after {
      content: "+";
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-item.open .faq-question::after {
      content: "−";
      transform: rotate(180deg);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed rgba(0,0,0,0.05);
      padding-top: 14px;
    }
    .faq-item.open .faq-answer {
      display: block;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--gradient-brand);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }
    .review-meta h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .review-meta span {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .review-rating {
      color: #ff9900;
      font-size: 0.9rem;
      margin-bottom: 8px;
    }
    .form-wrapper-card {
      background: #ffffff;
      padding: 40px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-md);
    }
    .custom-form {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .form-col-full {
      grid-column: span 2;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-label {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-subtle);
      background: var(--bg-base);
      font-size: 0.95rem;
      color: var(--text-main);
      outline: none;
      transition: var(--transition-default);
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(92, 45, 245, 0.1);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }
    .contact-info-panel {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 24px;
      padding: 40px;
      background: linear-gradient(135deg, rgba(92, 45, 245, 0.05), rgba(0, 210, 255, 0.05));
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
    }
    .contact-row-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }
    .contact-row-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      flex-shrink: 0;
    }
    .contact-row-text h5 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .contact-row-text p {
      font-size: 0.92rem;
      color: var(--text-muted);
    }
    .qr-box {
      width: 130px;
      height: 130px;
      padding: 6px;
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
    }
    .qr-box img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-subtle);
      padding-top: 60px;
      padding-bottom: 40px;
      margin-top: 60px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand p {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-top: 14px;
      line-height: 1.6;
    }
    .footer-col-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 20px;
      position: relative;
    }
    .footer-links-list li {
      margin-bottom: 12px;
    }
    .footer-links-list a {
      font-size: 0.92rem;
      color: var(--text-muted);
    }
    .footer-links-list a:hover {
      color: var(--primary);
      padding-left: 4px;
    }
    .friend-links-box {
      padding-top: 24px;
      border-top: 1px solid var(--border-subtle);
      margin-bottom: 30px;
    }
    .friend-links-title {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 12px;
    }
    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .friend-links-wrap a {
      font-size: 0.88rem;
      color: var(--text-muted);
      background: var(--bg-base);
      padding: 4px 10px;
      border-radius: 4px;
    }
    .friend-links-wrap a:hover {
      color: var(--primary);
      background: var(--bg-elevated);
    }
    .footer-bottom {
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-light);
      padding-top: 20px;
      border-top: 1px solid var(--border-subtle);
    }
    .float-dock {
      position: fixed;
      right: 24px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 999;
    }
    .float-dock-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--primary);
      cursor: pointer;
      transition: var(--transition-default);
      position: relative;
    }
    .float-dock-btn:hover {
      transform: scale(1.1);
      border-color: var(--primary);
    }
    .float-qr-modal {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      width: 150px;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-subtle);
      text-align: center;
    }
    .float-qr-modal img {
      width: 100%;
      height: auto;
    }
    .float-qr-modal p {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-top: 6px;
    }
    .float-dock-btn:hover .float-qr-modal {
      display: block;
    }
    @media (max-width: 992px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .hero-stats-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stat-card:nth-child(2) {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-link-item {
        width: 100%;
        text-align: center;
        padding: 12px;
      }
      .header-actions .btn-outline {
        display: none;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .grid-3, .grid-2, .grid-4 {
        grid-template-columns: 1fr;
      }
      .flow-steps-grid {
        grid-template-columns: 1fr;
      }
      .custom-form {
        grid-template-columns: 1fr;
      }
      .form-col-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .article-links-list {
        grid-template-columns: 1fr;
      }
      .score-badge-card {
        flex-direction: column;
        text-align: center;
      }
      .score-badge-val {
        text-align: center;
      }
    }