:root {
      --primary-color: #f97316;
      --primary-hover: #ea580c;
      --primary-light: #fff7ed;
      --primary-glow: rgba(249, 115, 22, 0.22);
      --secondary-color: #c2410c;
      --text-main: #1f2937;
      --text-muted: #4b5563;
      --text-light: #6b7280;
      --bg-page: #fafaf9;
      --bg-card: #ffffff;
      --bg-alt: #f4f4f5;
      --border-color: #e5e7eb;
      --border-accent: #fed7aa;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 14px rgba(249,115,22,0.08), 0 2px 6px rgba(0,0,0,0.04);
      --shadow-lg: 0 10px 25px rgba(249,115,22,0.12), 0 4px 10px rgba(0,0,0,0.03);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      line-height: 1.6;
      color: var(--text-main);
      background-color: var(--bg-page);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
    }
    .nav-links a:hover {
      color: var(--primary-color);
      background-color: var(--primary-light);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }
    .btn-primary {
      background-color: var(--primary-color);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 18px rgba(249, 115, 22, 0.45);
      transform: translateY(-1px);
    }
    .btn-secondary {
      background-color: #ffffff;
      color: var(--primary-color);
      border-color: var(--border-accent);
    }
    .btn-secondary:hover {
      background-color: var(--primary-light);
      border-color: var(--primary-color);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }
    .section-wrap {
      padding: 72px 0;
      border-bottom: 1px solid rgba(229, 231, 235, 0.6);
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary-color);
      background-color: var(--primary-light);
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
      border: 1px solid var(--border-accent);
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .hero-section {
      background: radial-gradient(circle at 50% 20%, #ffedd5 0%, #fafaf9 65%);
      padding: 88px 0 72px 0;
      position: relative;
    }
    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-h1 span {
      color: var(--primary-color);
    }
    .hero-sub {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-btns {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
    }
    .hero-btn-main {
      padding: 14px 34px;
      font-size: 1.1rem;
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .metric-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      text-align: center;
    }
    .metric-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-accent);
    }
    .metric-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 6px;
      font-family: inherit;
    }
    .metric-label {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .about-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .about-info h3 {
      font-size: 1.45rem;
      color: var(--text-main);
      margin-bottom: 16px;
      font-weight: 700;
    }
    .about-info p {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .about-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
    }
    .about-feature-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .about-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary-color);
    }
    .about-extra {
      background: var(--primary-light);
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px dashed var(--primary-color);
    }
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 14px;
    }
    .model-pill {
      font-size: 0.85rem;
      background: #ffffff;
      color: var(--secondary-color);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-accent);
      font-weight: 500;
    }
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--border-accent);
    }
    .service-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .service-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-md);
      background-color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      color: var(--primary-color);
      font-weight: 700;
      flex-shrink: 0;
    }
    .service-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .service-body {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .service-tag-item {
      font-size: 0.8rem;
      background-color: var(--bg-alt);
      color: var(--text-muted);
      padding: 2px 8px;
      border-radius: 4px;
    }
    .banner-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 36px;
    }
    .banner-card {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .banner-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .banner-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .banner-caption {
      padding: 14px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      text-align: center;
    }
    .media-showcase {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-top: 36px;
    }
    .showcase-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .showcase-item img {
      width: 100%;
      max-height: 320px;
      object-fit: cover;
    }
    .showcase-info {
      padding: 20px;
    }
    .showcase-info h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .showcase-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      border-color: var(--primary-color);
      transform: translateY(-3px);
    }
    .step-number {
      width: 38px;
      height: 38px;
      line-height: 38px;
      border-radius: 50%;
      background: var(--primary-color);
      color: #ffffff;
      font-weight: 800;
      margin: 0 auto 16px auto;
      font-size: 1.1rem;
    }
    .step-name {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .step-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .review-score-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-accent);
      padding: 32px;
      margin-bottom: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }
    .score-summary {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .score-digit {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--primary-color);
      line-height: 1;
    }
    .score-detail h4 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .score-stars {
      color: #f59e0b;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }
    .score-badge {
      background: var(--primary-light);
      padding: 10px 18px;
      border-radius: var(--radius-md);
      font-weight: 700;
      color: var(--secondary-color);
      border: 1px solid var(--border-accent);
      font-size: 1rem;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background: var(--bg-alt);
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .col-highlight {
      background-color: #fffaf0;
      color: var(--secondary-color);
      font-weight: 600;
    }
    .token-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .token-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .token-card:hover {
      border-color: var(--primary-color);
      transform: translateY(-3px);
    }
    .token-name {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .token-price-wrap {
      margin: 14px 0;
    }
    .token-current {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary-color);
    }
    .token-original {
      font-size: 0.9rem;
      color: var(--text-light);
      text-decoration: line-through;
      margin-left: 6px;
    }
    .token-discount {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: #15803d;
      background: #dcfce7;
      padding: 2px 8px;
      border-radius: 999px;
      margin-bottom: 10px;
    }
    .comments-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .comment-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .comment-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-color);
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      border: 1px solid var(--border-accent);
    }
    .user-meta h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .user-meta span {
      font-size: 0.85rem;
      color: var(--text-light);
    }
    .comment-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      font-style: italic;
    }
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-header {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 600;
      color: var(--text-main);
      font-size: 1.05rem;
      user-select: none;
    }
    .faq-header:hover {
      background: var(--primary-light);
      color: var(--primary-color);
    }
    .faq-icon {
      font-size: 1.25rem;
      transition: transform 0.28s ease;
      color: var(--text-light);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary-color);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.3s ease;
      padding: 0 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      background: #fffdfa;
    }
    .faq-item.active .faq-content {
      padding: 0 24px 20px 24px;
      max-height: 250px;
    }
    .article-section {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .article-dynamic {
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px dashed var(--border-color);
    }
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 12px;
    }
    .article-link-btn {
      display: block;
      padding: 10px 14px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      color: var(--text-muted);
      border: 1px solid var(--border-color);
      transition: var(--transition);
      text-overflow: ellipsis;
      white-space: nowrap;
      overflow: hidden;
    }
    .article-link-btn:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background: var(--primary-light);
    }
    .form-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #ffffff;
      transition: var(--transition);
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px var(--primary-glow);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .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: 1rem;
      color: var(--text-muted);
    }
    .contact-item strong {
      color: var(--text-main);
      min-width: 90px;
    }
    .qr-card {
      text-align: center;
      background: var(--primary-light);
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-accent);
    }
    .qr-card img {
      width: 160px;
      height: 160px;
      margin: 0 auto 12px auto;
      border-radius: var(--radius-sm);
      background: #ffffff;
      padding: 6px;
      border: 1px solid var(--border-color);
    }
    .partner-banner {
      background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 40px;
      text-align: center;
    }
    .partner-banner h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--secondary-color);
      margin-bottom: 12px;
    }
    .partner-banner p {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto 24px auto;
    }
    .footer-wrap {
      background: #18181b;
      color: #a1a1aa;
      padding: 56px 0 24px 0;
      border-top: 1px solid #27272a;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #f4f4f5;
      font-size: 1.3rem;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .footer-brand p {
      font-size: 0.95rem;
      line-height: 1.7;
      max-width: 440px;
    }
    .footer-col h5 {
      color: #f4f4f5;
      font-size: 1.05rem;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.9rem;
    }
    .footer-links a {
      color: #a1a1aa;
    }
    .footer-links a:hover {
      color: var(--primary-color);
    }
    .friend-links {
      border-top: 1px solid #27272a;
      padding-top: 24px;
      margin-top: 24px;
    }
    .friend-links h6 {
      color: #71717a;
      font-size: 0.85rem;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .friend-link-items {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }
    .friend-link-items a {
      color: #a1a1aa;
    }
    .friend-link-items a:hover {
      color: var(--primary-color);
    }
    .footer-bottom {
      border-top: 1px solid #27272a;
      padding-top: 24px;
      margin-top: 32px;
      text-align: center;
      font-size: 0.85rem;
      color: #71717a;
    }
    .float-dock {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .dock-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      font-size: 1.2rem;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }
    .dock-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
      border-color: var(--primary-color);
    }
    @media (max-width: 992px) {
      .metric-grid, .token-grid, .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid, .banner-grid, .comments-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .media-showcase, .contact-layout, .footer-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .metric-grid, .cards-grid, .banner-grid, .token-grid, .comments-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .review-score-box {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .hero-btns {
        flex-direction: column;
        width: 100%;
      }
      .hero-btns .btn {
        width: 100%;
      }
    }