* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --spring-green: #2a9d8f;
      --mint-light: #e6f7f3;
      --mint-soft: #d0f0e8;
      --mint-bg: #f2fbf8;
      --dark-text: #1d2b2a;
      --gray-text: #4a5a58;
      --light-gray: #6b7b78;
      --white: #ffffff;
      --border-light: #d8ede7;
      --shadow-sm: 0 4px 12px rgba(42, 157, 143, 0.08);
      --shadow-md: 0 12px 28px rgba(42, 157, 143, 0.12);
      --shadow-lg: 0 20px 40px rgba(42, 157, 143, 0.16);
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-sm: 12px;
      --transition: 0.25s ease;
      --container-width: 1200px;
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
      background-color: var(--mint-bg);
      color: var(--dark-text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      background-image: radial-gradient(circle at 15% 12%, rgba(42, 157, 143, 0.06) 0%, transparent 38%),
                        radial-gradient(circle at 88% 78%, rgba(42, 157, 143, 0.05) 0%, transparent 45%);
      background-attachment: fixed;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    .container {
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
      width: 100%;
    }

    header, main, footer {
      width: 100%;
    }

    .site-header {
      background: rgba(242, 251, 248, 0.88);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 100;
      transition: box-shadow var(--transition);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
      gap: 16px;
      flex-wrap: wrap;
      padding-top: 10px;
      padding-bottom: 10px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .ai-page-logo {
      max-width: 120px;
      height: auto;
      display: block;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
      flex-wrap: wrap;
    }

    .nav-links li {
      position: relative;
    }

    .nav-links a {
      display: block;
      padding: 8px 12px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--gray-text);
      border-radius: 8px;
      transition: color var(--transition), background-color var(--transition);
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: var(--spring-green);
      background-color: rgba(42, 157, 143, 0.08);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      font-weight: 600;
      font-size: 0.9rem;
      border-radius: 999px;
      padding: 10px 22px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
      text-align: center;
      white-space: nowrap;
    }

    .btn:active {
      transform: scale(0.97);
    }

    .btn-primary {
      background: var(--spring-green);
      color: #ffffff;
      box-shadow: 0 6px 14px rgba(42, 157, 143, 0.28);
    }

    .btn-primary:hover {
      background: #21867a;
      box-shadow: 0 10px 22px rgba(42, 157, 143, 0.38);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      border-color: var(--spring-green);
      color: var(--spring-green);
    }

    .btn-outline:hover {
      background: rgba(42, 157, 143, 0.08);
      transform: translateY(-2px);
    }

    .btn-dark {
      background: var(--dark-text);
      color: #ffffff;
    }

    .btn-dark:hover {
      background: #0f1c1a;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-light);
      border-radius: 10px;
      padding: 8px 12px;
      font-size: 1.3rem;
      color: var(--dark-text);
      cursor: pointer;
      transition: background-color var(--transition);
    }

    .menu-toggle:hover {
      background-color: var(--mint-light);
    }

    .hero {
      padding: 64px 0 48px;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -80px;
      right: -60px;
      width: 380px;
      height: 380px;
      background: radial-gradient(circle, rgba(42, 157, 143, 0.1) 0%, transparent 68%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero::after {
      content: '';
      position: absolute;
      bottom: -40px;
      left: -70px;
      width: 280px;
      height: 280px;
      background: radial-gradient(circle, rgba(42, 157, 143, 0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 1;
    }

    .hero-content h1 {
      font-size: 2.65rem;
      line-height: 1.25;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--dark-text);
      margin-bottom: 20px;
    }

    .hero-content h1 span {
      color: var(--spring-green);
    }

    .hero-desc {
      font-size: 1.08rem;
      color: var(--gray-text);
      max-width: 520px;
      margin-bottom: 30px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }

    .hero-actions .btn {
      padding: 14px 32px;
      font-size: 1rem;
    }

    .hero-trust {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--light-gray);
      font-size: 0.88rem;
      flex-wrap: wrap;
    }

    .hero-trust span {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .hero-trust .dot {
      width: 6px;
      height: 6px;
      background-color: var(--spring-green);
      border-radius: 50%;
      display: inline-block;
    }

    .hero-visual {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .metric-card {
      background: rgba(255, 255, 255, 0.75);
      backdrop-filter: blur(6px);
      -webkit-backdrop-filter: blur(6px);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px 18px;
      transition: transform var(--transition), box-shadow var(--transition);
      animation: floatUp 0.7s ease both;
    }

    .metric-card:nth-child(2) { animation-delay: 0.1s; }
    .metric-card:nth-child(3) { animation-delay: 0.2s; }
    .metric-card:nth-child(4) { animation-delay: 0.3s; }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--spring-green);
    }

    .metric-value {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--spring-green);
      margin-bottom: 4px;
      line-height: 1.2;
    }

    .metric-label {
      font-size: 0.85rem;
      color: var(--gray-text);
    }

    .badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .badge {
      display: inline-block;
      padding: 5px 14px;
      border-radius: 999px;
      font-size: 0.78rem;
      font-weight: 600;
      background-color: var(--mint-light);
      color: var(--spring-green);
      border: 1px solid var(--border-light);
      transition: background-color var(--transition);
    }

    .badge:hover {
      background-color: var(--mint-soft);
    }

    .section {
      padding: 64px 0;
      position: relative;
    }

    .section-alt {
      background-color: rgba(230, 247, 243, 0.55);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }

    .section-header {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 44px;
    }

    .section-header .eyebrow {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--spring-green);
      background: rgba(42, 157, 143, 0.09);
      padding: 5px 14px;
      border-radius: 999px;
      margin-bottom: 14px;
    }

    .section-header h2 {
      font-size: 2rem;
      font-weight: 800;
      line-height: 1.3;
      color: var(--dark-text);
      margin-bottom: 12px;
    }

    .section-header p {
      color: var(--gray-text);
      font-size: 1rem;
    }

    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 20px;
    }

    .card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 26px 22px;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--spring-green);
    }

    .card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark-text);
    }

    .card p {
      font-size: 0.92rem;
      color: var(--gray-text);
      line-height: 1.6;
      flex: 1;
    }

    .card-icon {
      font-size: 1.6rem;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--mint-light);
      border-radius: 12px;
      margin-bottom: 4px;
    }

    .feature-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 12px;
      margin-top: 20px;
    }

    .feature-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      font-size: 0.9rem;
      color: var(--dark-text);
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 10px;
      transition: background-color var(--transition);
    }

    .feature-item:hover {
      background-color: var(--mint-light);
    }

    .feature-item::before {
      content: '◆';
      color: var(--spring-green);
      font-size: 0.7rem;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 20px;
    }

    .model-tag {
      padding: 6px 14px;
      border-radius: 999px;
      background: var(--white);
      border: 1px solid var(--border-light);
      font-size: 0.82rem;
      font-weight: 500;
      color: var(--gray-text);
      transition: background-color var(--transition), color var(--transition);
    }

    .model-tag:hover {
      background: var(--spring-green);
      color: #ffffff;
      border-color: var(--spring-green);
    }

    .step-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 18px;
      counter-reset: step;
    }

    .step-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 26px 22px;
      counter-increment: step;
      transition: transform var(--transition), box-shadow var(--transition);
      position: relative;
    }

    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .step-item::before {
      content: counter(step, decimal-leading-zero);
      display: block;
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--spring-green);
      opacity: 0.35;
      margin-bottom: 10px;
      line-height: 1;
    }

    .step-item h3 {
      font-size: 1.05rem;
      margin-bottom: 8px;
      font-weight: 700;
    }

    .step-item p {
      font-size: 0.9rem;
      color: var(--gray-text);
      line-height: 1.55;
    }

    .table-wrap {
      overflow-x: auto;
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      -webkit-overflow-scrolling: touch;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.9rem;
      min-width: 640px;
    }

    th, td {
      padding: 15px 18px;
      text-align: left;
      border-bottom: 1px solid var(--border-light);
      color: var(--dark-text);
    }

    th {
      background-color: var(--mint-light);
      font-weight: 700;
      font-size: 0.88rem;
      color: var(--dark-text);
      white-space: nowrap;
    }

    tr:last-child td {
      border-bottom: none;
    }

    tr:hover td {
      background-color: rgba(230, 247, 243, 0.4);
    }

    .rating-stars {
      color: #f5b342;
      letter-spacing: 2px;
      font-size: 1rem;
    }

    .rating-score {
      font-weight: 800;
      color: var(--spring-green);
      font-size: 1.1rem;
    }

    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 20px;
    }

    .testimonial-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 22px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .testimonial-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .testimonial-stars {
      color: #f5b342;
      font-size: 0.95rem;
      letter-spacing: 2px;
    }

    .testimonial-text {
      font-size: 0.92rem;
      color: var(--gray-text);
      line-height: 1.7;
      flex: 1;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 4px;
    }

    .author-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--mint-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--spring-green);
      font-size: 0.85rem;
      flex-shrink: 0;
    }

    .author-info strong {
      display: block;
      font-size: 0.88rem;
      color: var(--dark-text);
    }

    .author-info span {
      font-size: 0.78rem;
      color: var(--light-gray);
    }

    .faq-list {
      max-width: 840px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: box-shadow var(--transition);
    }

    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      background: transparent;
      border: none;
      padding: 18px 22px;
      text-align: left;
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--dark-text);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      font-family: inherit;
      transition: background-color var(--transition);
    }

    .faq-question:hover {
      background-color: var(--mint-light);
    }

    .faq-question::after {
      content: '+';
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--spring-green);
      transition: transform var(--transition);
      flex-shrink: 0;
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 22px;
      font-size: 0.92rem;
      color: var(--gray-text);
      line-height: 1.7;
      background: var(--mint-bg);
    }

    .faq-item.active .faq-answer {
      max-height: 400px;
      padding: 16px 22px 20px;
    }

    .form-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: var(--shadow-sm);
      max-width: 720px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group.full-width {
      grid-column: 1 / -1;
    }

    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--dark-text);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-light);
      border-radius: 10px;
      font-size: 0.92rem;
      font-family: inherit;
      color: var(--dark-text);
      background: var(--mint-bg);
      transition: border-color var(--transition), box-shadow var(--transition);
      outline: none;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--spring-green);
      box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.16);
    }

    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }

    .form-submit {
      margin-top: 8px;
      width: 100%;
      padding: 14px;
      font-size: 1rem;
    }

    .article-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 18px;
    }

    .article-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: transform var(--transition), box-shadow var(--transition);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .article-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--dark-text);
      line-height: 1.4;
    }

    .article-card p {
      font-size: 0.86rem;
      color: var(--gray-text);
      line-height: 1.55;
      flex: 1;
    }

    .article-card a {
      font-size: 0.86rem;
      font-weight: 600;
      color: var(--spring-green);
      margin-top: 6px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap var(--transition);
    }

    .article-card a:hover {
      gap: 8px;
    }

    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 22px;
    }

    .case-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
    }

    .case-media {
      aspect-ratio: 16 / 10;
      background: var(--mint-light);
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .case-media img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
    }

    .case-body {
      padding: 18px 20px 22px;
    }

    .case-body h3 {
      font-size: 1.02rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .case-body p {
      font-size: 0.88rem;
      color: var(--gray-text);
      line-height: 1.55;
    }

    .network-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
      gap: 14px;
    }

    .network-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 18px 16px;
      text-align: center;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--dark-text);
      transition: background-color var(--transition), transform var(--transition);
    }

    .network-item:hover {
      background: var(--mint-light);
      transform: translateY(-2px);
    }

    .network-item span {
      display: block;
      font-size: 0.78rem;
      font-weight: 400;
      color: var(--light-gray);
      margin-top: 4px;
    }

    .price-tag-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 18px;
    }

    .price-tag-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .price-tag-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .price-tag-card .price-label {
      font-size: 0.88rem;
      color: var(--light-gray);
      margin-bottom: 6px;
    }

    .price-tag-card .price-value {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--spring-green);
    }

    .price-tag-card .price-note {
      font-size: 0.8rem;
      color: var(--light-gray);
      margin-top: 4px;
    }

    .footer {
      background: #0f2522;
      color: #d6e9e4;
      padding: 52px 0 24px;
      margin-top: 0;
    }

    .footer a {
      color: #d6e9e4;
      transition: color var(--transition);
    }

    .footer a:hover {
      color: #ffffff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.3fr;
      gap: 32px;
      margin-bottom: 36px;
      align-items: start;
      text-align: left;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.7;
      color: #a8c6c0;
      margin-top: 12px;
      max-width: 320px;
    }

    .footer-brand .footer-logo {
      max-width: 130px;
      height: auto;
      display: block;
      margin-bottom: 8px;
    }

    .footer h4 {
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: #ffffff;
    }

    .footer ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer ul li a {
      font-size: 0.86rem;
      color: #a8c6c0;
    }

    .footer ul li a:hover {
      color: #ffffff;
    }

    .footer-contact-item {
      font-size: 0.86rem;
      color: #a8c6c0;
      margin-bottom: 8px;
      display: flex;
      align-items: flex-start;
      gap: 8px;
      line-height: 1.5;
    }

    .footer-contact-item strong {
      color: #ffffff;
      font-weight: 600;
      flex-shrink: 0;
    }

    .footer-qr {
      margin-top: 10px;
    }

    .footer-qr img {
      width: 96px;
      height: 96px;
      object-fit: contain;
      background: #ffffff;
      border-radius: 8px;
      padding: 4px;
      display: block;
    }

    .footer-bottom {
      border-top: 1px solid rgba(214, 233, 228, 0.18);
      padding-top: 20px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      font-size: 0.82rem;
      color: #87a8a2;
    }

    .footer-bottom p {
      color: #87a8a2;
    }

    .friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      align-items: center;
    }

    .friendly-links a {
      font-size: 0.82rem;
      color: #a8c6c0;
    }

    .friendly-links a:hover {
      color: #ffffff;
    }

    .float-customer {
      position: fixed;
      right: 20px;
      bottom: 90px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: flex-end;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--spring-green);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
      box-shadow: var(--shadow-md);
      font-size: 1.1rem;
      transition: transform var(--transition), background-color var(--transition);
      text-decoration: none;
    }

    .float-btn:hover {
      background: #21867a;
      transform: scale(1.08);
    }

    .back-to-top {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--white);
      border: 1px solid var(--border-light);
      color: var(--dark-text);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      opacity: 0;
      visibility: hidden;
      transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
      font-size: 1rem;
      text-decoration: none;
    }

    .back-to-top.visible {
      opacity: 1;
      visibility: visible;
    }

    .back-to-top:hover {
      background: var(--mint-light);
      transform: translateY(-3px);
    }

    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    @keyframes floatUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .mobile-nav {
      display: none;
      width: 100%;
      padding: 10px 0 16px;
      border-top: 1px solid var(--border-light);
    }

    .mobile-nav.open {
      display: block;
    }

    .mobile-nav ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .mobile-nav ul li a {
      display: block;
      padding: 10px 12px;
      font-size: 0.95rem;
      color: var(--gray-text);
      border-radius: 8px;
      transition: background-color var(--transition);
    }

    .mobile-nav ul li a:hover {
      background-color: var(--mint-light);
      color: var(--spring-green);
    }

    .mobile-nav .mobile-actions {
      display: flex;
      gap: 10px;
      margin-top: 12px;
      flex-wrap: wrap;
    }

    .stat-banner {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
      margin-top: 32px;
    }

    .stat-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 18px 28px;
      text-align: center;
      min-width: 140px;
      transition: box-shadow var(--transition);
    }

    .stat-item:hover {
      box-shadow: var(--shadow-sm);
    }

    .stat-value {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--spring-green);
    }

    .stat-label {
      font-size: 0.8rem;
      color: var(--light-gray);
      margin-top: 2px;
    }

    .join-agent {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      max-width: 820px;
      margin: 0 auto;
    }

    .join-agent h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .join-agent p {
      color: var(--gray-text);
      font-size: 0.95rem;
      max-width: 600px;
      margin: 0 auto 24px;
    }

    .join-agent .btn {
      margin: 0 auto;
    }

    @media (max-width: 1024px) {
      .hero-inner {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .hero-content h1 {
        font-size: 2.2rem;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 860px) {
      .nav-links {
        display: none;
      }
      .nav-actions .btn {
        display: none;
      }
      .menu-toggle {
        display: inline-block;
      }
      .header-inner {
        gap: 10px;
        padding-top: 8px;
        padding-bottom: 8px;
      }
      .mobile-nav {
        display: none;
      }
      .mobile-nav.open {
        display: block;
      }
      .section {
        padding: 44px 0;
      }
      .section-header h2 {
        font-size: 1.6rem;
      }
      .hero-content h1 {
        font-size: 1.9rem;
      }
    }

    @media (max-width: 600px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .hero {
        padding: 40px 0 32px;
      }
      .hero-content h1 {
        font-size: 1.6rem;
      }
      .hero-actions .btn {
        padding: 12px 22px;
        font-size: 0.9rem;
        width: 100%;
      }
      .metric-grid {
        grid-template-columns: 1fr 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .card-grid {
        grid-template-columns: 1fr;
      }
      .step-grid {
        grid-template-columns: 1fr;
      }
      .article-list {
        grid-template-columns: 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .network-grid {
        grid-template-columns: 1fr 1fr;
      }
      .price-tag-grid {
        grid-template-columns: 1fr;
      }
    }