:root {
      --primary: #059669;
      --primary-dark: #047857;
      --primary-light: #10b981;
      --mint-bg: #f0fdf4;
      --mint-subtle: #ecfdf5;
      --mint-border: #a7f3d0;
      --accent: #0284c7;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --white: #ffffff;
      --card-bg: #ffffff;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --shadow-xl: 0 20px 25px -5px rgba(5, 150, 105, 0.08), 0 8px 10px -6px rgba(5, 150, 105, 0.04);
      --radius: 12px;
      --radius-lg: 18px;
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--mint-bg);
      color: var(--text-main);
      line-height: 1.6;
    }
    body {
      background: linear-gradient(180deg, #f0fdf4 0%, #ffffff 40%, #f0fdf4 100%);
      color: var(--text-main);
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      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, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--mint-border);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo-wrap img {
      height: 38px;
      width: auto;
    }
    .brand-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: 6px;
      display: inline-block;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--mint-subtle);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 8px;
      font-size: 14px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: var(--white);
      box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: 0 6px 16px rgba(5, 150, 105, 0.35);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: var(--white);
      color: var(--primary-dark);
      border-color: var(--mint-border);
    }
    .btn-outline:hover {
      background: var(--mint-subtle);
      border-color: var(--primary);
    }
    .btn-lg {
      padding: 14px 32px;
      font-size: 16px;
      border-radius: 10px;
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, #f8fdfa 0%, #ecfdf5 100%);
      border-top: 1px solid #e2f7ed;
      border-bottom: 1px solid #e2f7ed;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .badge-sub {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      background: #d1fae5;
      color: var(--primary-dark);
      border-radius: 999px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 50% 20%, #dcfce7 0%, #f0fdf4 60%, #ffffff 100%);
      text-align: center;
      position: relative;
    }
    .hero-h1 {
      font-size: 40px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 20px;
      line-height: 1.25;
    }
    .hero-h1 span {
      color: var(--primary);
    }
    .hero-p {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1040px;
      margin: 0 auto;
    }
    .stat-card {
      background: var(--white);
      border: 1px solid var(--mint-border);
      border-radius: var(--radius);
      padding: 24px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .stat-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .model-pills-container {
      margin-top: 36px;
      padding: 16px 20px;
      background: rgba(255, 255, 255, 0.75);
      border: 1px dashed var(--mint-border);
      border-radius: 12px;
      max-width: 1040px;
      margin-left: auto;
      margin-right: auto;
    }
    .model-pills-title {
      font-size: 13px;
      color: var(--primary-dark);
      font-weight: 600;
      margin-bottom: 10px;
    }
    .model-pills-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }
    .model-pill {
      font-size: 12px;
      background: #f0fdf4;
      border: 1px solid #bbf7d0;
      color: #166534;
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 500;
    }
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .card-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .service-card {
      background: var(--white);
      border: 1px solid #e2f7ed;
      border-radius: var(--radius);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: #ecfdf5;
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 18px;
      border: 1px solid #d1fae5;
    }
    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .tag-badge {
      display: inline-block;
      font-size: 11px;
      padding: 2px 8px;
      background: #e0f2fe;
      color: #0369a1;
      border-radius: 4px;
      margin-top: 14px;
      align-self: flex-start;
      font-weight: 500;
    }
    .feature-list {
      list-style: none;
      margin-top: 14px;
    }
    .feature-list li {
      font-size: 13px;
      color: var(--text-muted);
      padding-left: 18px;
      position: relative;
      margin-bottom: 6px;
    }
    .feature-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      top: 0;
      color: var(--primary);
      font-weight: bold;
    }
    .media-card {
      background: var(--white);
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid #e2f7ed;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .media-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }
    .media-img-wrap {
      width: 100%;
      background: #f1f5f9;
      overflow: hidden;
    }
    .media-body {
      padding: 20px;
    }
    .media-body h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .media-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-item {
      background: var(--white);
      border: 1px solid #e2f7ed;
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: var(--white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px auto;
      font-weight: 700;
      font-size: 15px;
    }
    .step-item h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .eval-highlight-box {
      background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
      border: 2px solid #6ee7b7;
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 36px;
      text-align: center;
    }
    .eval-score-num {
      font-size: 54px;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1;
      margin-bottom: 8px;
    }
    .eval-stars {
      color: #f59e0b;
      font-size: 24px;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }
    .eval-highlight-box h3 {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .eval-highlight-box p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
    }
    .compare-table-wrapper {
      background: var(--white);
      border-radius: var(--radius);
      border: 1px solid #e2f7ed;
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 14px;
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table th.highlight,
    .compare-table td.highlight {
      background: #f0fdf4;
      color: var(--primary-dark);
      font-weight: 600;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .token-card {
      background: var(--white);
      border: 1px solid #e2f7ed;
      border-radius: var(--radius);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: all 0.25s ease;
      position: relative;
    }
    .token-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-xl);
      transform: scale(1.03);
    }
    .token-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: var(--white);
      font-size: 12px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 999px;
    }
    .token-price {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary-dark);
      margin: 16px 0 6px 0;
    }
    .token-price span {
      font-size: 14px;
      color: var(--text-light);
      font-weight: normal;
    }
    .token-specs {
      list-style: none;
      margin: 20px 0 24px 0;
      text-align: left;
    }
    .token-specs li {
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed #f1f5f9;
    }
    .faq-accordion {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid #e2f7ed;
      border-radius: 10px;
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .faq-item.active {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      padding: 18px 20px;
      text-align: left;
      background: none;
      border: none;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fafdfb;
      padding: 0 20px;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 20px 18px 20px;
    }
    .faq-answer p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--white);
      border: 1px solid #e2f7ed;
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f8fafc;
      padding-top: 14px;
    }
    .avatar-initial {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #d1fae5;
      color: var(--primary-dark);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }
    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-light);
    }
    .form-wrapper {
      max-width: 760px;
      margin: 0 auto;
      background: var(--white);
      border: 1px solid var(--mint-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      padding: 12px 14px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
      background: #f8fafc;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .article-box {
      background: var(--white);
      border: 1px solid #e2f7ed;
      border-radius: var(--radius);
      padding: 24px;
    }
    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }
    .article-link-tag {
      font-size: 13px;
      color: var(--primary-dark);
      background: #ecfdf5;
      padding: 6px 14px;
      border-radius: 6px;
      border: 1px solid #d1fae5;
    }
    .article-link-tag:hover {
      background: var(--primary);
      color: var(--white);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .qr-card {
      background: var(--white);
      border: 1px solid #e2f7ed;
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .qr-img-wrap {
      max-width: 180px;
      margin: 0 auto 16px auto;
      border: 1px solid #e2f7ed;
      padding: 8px;
      border-radius: 8px;
      background: #ffffff;
    }
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #f8fafc;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: #94a3b8;
      font-size: 13px;
    }
    .footer-links a:hover {
      color: #34d399;
    }
    .friend-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 8px;
    }
    .friend-links-row a {
      color: #94a3b8;
      font-size: 13px;
      background: #1e293b;
      padding: 4px 10px;
      border-radius: 4px;
    }
    .friend-links-row a:hover {
      color: #34d399;
      background: #334155;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748b;
    }
    .floating-contact {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
      cursor: pointer;
      font-size: 18px;
      transition: transform 0.2s ease;
      border: none;
    }
    .floating-btn:hover {
      transform: scale(1.1);
      background: var(--primary-dark);
    }
    @media (max-width: 1024px) {
      .card-grid-4, .process-steps, .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .card-grid-3, .review-grid, .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--mint-border);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .card-grid-3, .card-grid-4, .card-grid-2, .review-grid, .token-grid, .contact-grid, .hero-stats-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .hero-h1 {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
      .eval-score-num {
        font-size: 42px;
      }
    }