:root {
      --primary: #0052ff;
      --primary-hover: #003ecb;
      --accent: #00d2ff;
      --bg-base: #f6f8fc;
      --bg-surface: #ffffff;
      --text-main: #141824;
      --text-muted: #5b6275;
      --border-color: #e2e7f0;
      --brand-gradient: linear-gradient(135deg, #0052ff 0%, #00c6ff 100%);
      --card-shadow: 0 10px 30px rgba(0, 82, 255, 0.05);
      --card-hover-shadow: 0 16px 36px rgba(0, 82, 255, 0.12);
      --container-max: 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;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      min-width: 320px;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.25s ease;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-area img {
      max-height: 42px;
      width: auto;
      display: block;
    }
    .brand-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 6px;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: rgba(0, 82, 255, 0.05);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      text-align: center;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--brand-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(0, 82, 255, 0.28);
    }
    .btn-primary:hover {
      box-shadow: 0 6px 20px rgba(0, 82, 255, 0.4);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background-color: rgba(0, 82, 255, 0.05);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      padding: 6px;
      cursor: pointer;
    }
    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.2s;
    }
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 50% 0%, rgba(0, 210, 255, 0.12) 0%, rgba(246, 248, 252, 0) 70%);
      text-align: center;
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(0, 82, 255, 0.08);
      border: 1px solid rgba(0, 82, 255, 0.2);
      border-radius: 24px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-desc {
      max-width: 780px;
      margin: 0 auto 36px;
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 960px;
      margin: 0 auto;
    }
    .stat-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 20px;
      box-shadow: var(--card-shadow);
    }
    .stat-card strong {
      display: block;
      font-size: 30px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .stat-card span {
      font-size: 13px;
      color: var(--text-muted);
    }
    .section-wrap {
      padding: 80px 0;
    }
    .section-wrap.alt-bg {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 50px;
    }
    .section-tag {
      text-transform: uppercase;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: inline-block;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }
    .about-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--card-shadow);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .about-text h3 {
      font-size: 24px;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .about-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 15px;
    }
    .about-features {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .about-features li {
      display: flex;
      align-items: center;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }
    .about-features li::before {
      content: "✓";
      color: var(--primary);
      margin-right: 8px;
      font-weight: 800;
    }
    .about-highlight-box {
      background: linear-gradient(135deg, rgba(0, 82, 255, 0.04) 0%, rgba(0, 210, 255, 0.08) 100%);
      border: 1px dashed var(--primary);
      border-radius: 12px;
      padding: 30px;
    }
    .about-highlight-box h4 {
      font-size: 18px;
      margin-bottom: 12px;
      color: var(--primary);
    }
    .about-highlight-box p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-item {
      display: inline-block;
      padding: 4px 10px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 12px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .cards-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
      border-color: rgba(0, 82, 255, 0.3);
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(0, 82, 255, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 22px;
      margin-bottom: 18px;
    }
    .feature-card h3 {
      font-size: 18px;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .process-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-step {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      position: relative;
      text-align: center;
    }
    .step-badge {
      display: inline-block;
      width: 36px;
      height: 36px;
      line-height: 36px;
      border-radius: 50%;
      background: var(--brand-gradient);
      color: #ffffff;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .process-step h3 {
      font-size: 16px;
      margin-bottom: 8px;
    }
    .process-step p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
      margin-bottom: 40px;
    }
    .showcase-img-wrap {
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      background: #eef2f8;
      border: 1px solid var(--border-color);
    }
    .showcase-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .showcase-desc h3 {
      font-size: 24px;
      margin-bottom: 14px;
    }
    .showcase-desc p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .compare-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }
    .compare-header-box {
      padding: 24px 30px;
      background: linear-gradient(90deg, #f0f5ff 0%, #e6f7ff 100%);
      border-bottom: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }
    .compare-score {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .score-badge {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary);
    }
    .score-stars {
      color: #ff9900;
      font-size: 18px;
      letter-spacing: 2px;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th,
    .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .compare-table th {
      background: #f8fafc;
      color: var(--text-muted);
      font-weight: 600;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td.highlight {
      color: var(--primary);
      font-weight: 600;
      background: rgba(0, 82, 255, 0.02);
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question::after {
      content: "+";
      font-size: 20px;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-question::after {
      content: "−";
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }
    .author-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--brand-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .author-info strong {
      display: block;
      font-size: 14px;
      color: var(--text-main);
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-muted);
    }
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--card-shadow);
    }
    .contact-info-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 14px;
    }
    .contact-qr {
      margin-top: 20px;
      display: inline-block;
      padding: 8px;
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      text-align: center;
    }
    .contact-qr img {
      max-width: 140px;
      height: auto;
      display: block;
    }
    .contact-qr span {
      display: block;
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .contact-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }
    .articles-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--card-shadow);
    }
    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }
    .article-links a {
      display: inline-block;
      padding: 6px 14px;
      background: #f1f5f9;
      border-radius: 6px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .article-links a:hover {
      color: var(--primary);
      background: #e2e8f0;
    }
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px;
      color: var(--text-muted);
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 36px;
    }
    .footer-col h4 {
      font-size: 15px;
      color: var(--text-main);
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-col ul li a:hover {
      color: var(--primary);
    }
    .friendly-links {
      border-top: 1px solid var(--border-color);
      padding: 20px 0;
      margin-bottom: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .friendly-links span {
      font-weight: 600;
      color: var(--text-main);
    }
    .friendly-links a {
      color: var(--text-muted);
    }
    .friendly-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      color: var(--text-muted);
      font-size: 12px;
    }
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 40px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-weight: bold;
      transition: all 0.25s;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
    }
    @media (max-width: 992px) {
      .hero-title {
        font-size: 34px;
      }
      .hero-stats-grid,
      .cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3,
      .testimonial-grid,
      .process-flow {
        grid-template-columns: 1fr;
      }
      .about-box,
      .showcase-grid,
      .contact-container,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px 0;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li a {
        width: 100%;
        padding: 12px 24px;
        border-radius: 0;
      }
    }
    @media (max-width: 600px) {
      .hero-title {
        font-size: 26px;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
        width: 100%;
      }
      .hero-actions .btn {
        width: 100%;
      }
    }