:root {
      --primary: #4338ca;
      --primary-light: #6366f1;
      --secondary: #0ea5e9;
      --accent: #f43f5e;
      --accent-warm: #f59e0b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border: #e2e8f0;
      --radius: 12px;
      --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 20px 30px -10px rgba(99, 102, 241, 0.15);
      --container-width: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(14, 165, 233, 0.06) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(244, 63, 94, 0.03) 0px, transparent 50%);
      background-attachment: fixed;
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }
    .brand-wrap .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }
    .brand-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      gap: 0;
      list-style: none;
      align-items: center;
    }
    .nav-links li a {
      text-decoration: none;
      color: var(--text-muted);
      font-weight: 500;
      font-size: 14px;
      padding: 8px 12px;
      border-radius: 6px;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.08);
    }
    .header-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 10px 22px;
      border-radius: 8px;
      font-weight: 600;
      font-size: 15px;
      text-decoration: none;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #3730a3, var(--primary));
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.4);
    }
    .btn-outline {
      border-color: var(--border);
      background: #ffffff;
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary-light);
      color: var(--primary);
      background: rgba(99, 102, 241, 0.04);
    }
    .btn-lg {
      padding: 14px 28px;
      font-size: 16px;
      border-radius: 10px;
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }
    .hero-section {
      padding: 90px 0 70px;
      text-align: center;
      position: relative;
    }
    .badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 30px;
      background: #e0e7ff;
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.2);
    }
    .badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #4338ca 0%, #0284c7 50%, #db2777 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px;
    }
    .hero-cta {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-tags {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-tag-item {
      font-size: 12px;
      padding: 4px 10px;
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 6px;
      color: var(--text-muted);
    }
    .stats-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 50px;
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }
    .stat-item {
      text-align: center;
      border-right: 1px solid var(--border);
    }
    .stat-item:last-child {
      border-right: none;
    }
    .stat-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
    }
    .section-wrap {
      padding: 70px 0;
    }
    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 45px;
    }
    .section-tag {
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
      display: block;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .section-intro {
      font-size: 15px;
      color: var(--text-muted);
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow);
      transition: all 0.3s ease;
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(99, 102, 241, 0.3);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(99, 102, 241, 0.1);
      color: var(--primary);
      font-size: 22px;
      margin-bottom: 16px;
    }
    .card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      position: relative;
    }
    .step-number {
      font-size: 28px;
      font-weight: 800;
      color: #cbd5e1;
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-box h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .step-box p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .compare-container {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 30px;
      box-shadow: var(--shadow);
    }
    .score-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 10px 20px;
      border-radius: 30px;
      background: linear-gradient(135deg, #fef3c7, #fde68a);
      color: #92400e;
      font-weight: 700;
      margin-bottom: 24px;
    }
    .score-stars {
      color: #f59e0b;
      font-size: 18px;
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th, .compare-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border);
      font-size: 14px;
    }
    .compare-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 600;
    }
    .compare-table tr:hover td {
      background: #fafafa;
    }
    .highlight-col {
      background: rgba(99, 102, 241, 0.04);
      font-weight: 600;
      color: var(--primary);
    }
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .token-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow);
    }
    .token-card.featured {
      border-color: var(--primary);
      position: relative;
    }
    .token-card.featured::before {
      content: "超值推荐";
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #ffffff;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 10px;
      border-radius: 20px;
    }
    .token-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .token-price {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 14px;
    }
    .token-features {
      list-style: none;
      text-align: left;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .token-features li {
      padding: 6px 0;
      border-bottom: 1px dashed var(--border);
    }
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .media-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .media-img-wrap {
      width: 100%;
      background: #e2e8f0;
      overflow: hidden;
    }
    .media-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }
    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }
    .media-content {
      padding: 20px;
    }
    .media-content h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .media-content p {
      font-size: 14px;
      color: var(--text-muted);
    }
    .banner-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .banner-item {
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--border);
    }
    .banner-item img {
      width: 100%;
      height: auto;
      display: block;
    }
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 22px;
      box-shadow: var(--shadow);
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .review-info h4 {
      font-size: 15px;
      font-weight: 700;
    }
    .review-info span {
      font-size: 12px;
      color: var(--text-muted);
    }
    .review-stars {
      color: #f59e0b;
      font-size: 13px;
      margin-bottom: 8px;
    }
    .review-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 20px;
      font-weight: 700;
      font-size: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      background: #ffffff;
    }
    .faq-question::after {
      content: "+";
      font-size: 20px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #f8fafc;
      padding: 0 20px;
    }
    .faq-item.active .faq-answer {
      padding: 16px 20px;
      max-height: 200px;
      border-top: 1px solid var(--border);
    }
    .faq-answer p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 36px;
      box-shadow: var(--shadow);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
      background: #f8fafc;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .article-box {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 24px;
    }
    .article-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .article-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      border-radius: 6px;
      background: #f8fafc;
      text-decoration: none;
      color: var(--text-main);
      font-size: 14px;
      transition: all 0.2s ease;
    }
    .article-item:hover {
      background: #e0e7ff;
      color: var(--primary);
      transform: translateX(4px);
    }
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 14px;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 18px;
    }
    .footer-col p {
      line-height: 1.7;
      margin-bottom: 12px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .friend-links-area {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-bottom: 24px;
    }
    .friend-links-area a {
      color: #94a3b8;
      text-decoration: none;
      margin-right: 18px;
      font-size: 13px;
      display: inline-block;
      margin-bottom: 8px;
      transition: color 0.2s ease;
    }
    .friend-links-area a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
    }
    .qr-wrap {
      display: inline-block;
      background: #ffffff;
      padding: 6px;
      border-radius: 6px;
    }
    .qr-wrap img {
      width: 90px;
      height: 90px;
      display: block;
    }
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      text-decoration: none;
      position: relative;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
    }
    .qr-popover {
      display: none;
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 8px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--border);
      text-align: center;
      width: 140px;
    }
    .qr-popover img {
      width: 100%;
      height: auto;
      display: block;
      margin-bottom: 6px;
    }
    .qr-popover span {
      font-size: 11px;
      color: var(--text-main);
      font-weight: 600;
    }
    .float-btn:hover .qr-popover {
      display: block;
    }
    @media (max-width: 992px) {
      .grid-4, .process-steps, .banner-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .token-grid, .review-grid {
        grid-template-columns: repeat(1, 1fr);
      }
      .media-card-grid {
        grid-template-columns: 1fr;
      }
      .stats-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-title {
        font-size: 32px;
      }
      .nav-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        width: 100%;
      }
    }
    @media (max-width: 600px) {
      .grid-4, .process-steps, .banner-grid, .stats-bar {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .hero-title {
        font-size: 26px;
      }
      .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding-bottom: 12px;
      }
      .stat-item:last-child {
        border-bottom: none;
      }
    }