:root {
      --primary: #00d2ff;
      --secondary: #9b51e0;
      --accent-neon: #00f0ff;
      --bg-page: #f6f9fc;
      --bg-card: #ffffff;
      --text-main: #141b2d;
      --text-muted: #55627a;
      --border-color: #e4eaf3;
      --brand-gradient: linear-gradient(135deg, #0052d4 0%, #4364f7 50%, #6fb1fc 100%);
      --neon-gradient: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 50%, #9b51e0 100%);
      --card-shadow: 0 10px 30px rgba(0, 82, 212, 0.06);
      --hover-shadow: 0 18px 40px rgba(0, 210, 255, 0.16);
      --container-max: 1200px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      position: relative;
    }

    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: radial-gradient(circle at 15% 15%, rgba(0, 210, 255, 0.05), transparent 40%),
                  radial-gradient(circle at 85% 85%, rgba(155, 81, 224, 0.05), transparent 45%);
      pointer-events: none;
      z-index: -1;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.3s ease;
    }

    .main-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;
      width: 100%;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
    }

    .brand-logo img.ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

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

    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      padding: 10px 14px;
      border-radius: 6px;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: #0052d4;
      background: rgba(0, 82, 212, 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: 15px;
      font-weight: 600;
      border-radius: 30px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
      white-space: nowrap;
    }

    .btn-neon {
      background: var(--neon-gradient);
      color: #ffffff;
      box-shadow: 0 6px 18px rgba(0, 210, 255, 0.35);
    }

    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(0, 210, 255, 0.5);
    }

    .btn-outline {
      border-color: #0052d4;
      color: #0052d4;
      background: transparent;
    }

    .btn-outline:hover {
      background: rgba(0, 82, 212, 0.05);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    .hero-section {
      padding: 70px 0 60px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(0, 210, 255, 0.12);
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      color: #0077b6;
      margin-bottom: 24px;
      animation: pulseGlow 2.5s infinite;
    }

    @keyframes pulseGlow {
      0%, 100% { box-shadow: 0 0 10px rgba(0, 210, 255, 0.2); }
      50% { box-shadow: 0 0 20px rgba(0, 210, 255, 0.4); }
    }

    .hero-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -0.5px;
      color: #0d1b2a;
      max-width: 900px;
      margin: 0 auto 20px;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px;
    }

    .hero-cta {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      margin-bottom: 50px;
    }

    .hero-highlights {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .hl-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 24px 18px;
      border-radius: 14px;
      box-shadow: var(--card-shadow);
      text-align: left;
      border-top: 3px solid #00d2ff;
      transition: transform 0.3s ease;
    }

    .hl-box:hover {
      transform: translateY(-5px);
    }

    .hl-val {
      font-size: 26px;
      font-weight: 800;
      color: #0052d4;
      display: block;
      margin-bottom: 4px;
    }

    .hl-lbl {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    .sec-block {
      padding: 60px 0;
    }

    .sec-head {
      text-align: center;
      margin-bottom: 44px;
    }

    .sec-sub {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      font-weight: 700;
      color: #0077b6;
      margin-bottom: 6px;
    }

    .sec-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .sec-intro {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 650px;
      margin: 0 auto;
    }

    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      box-shadow: var(--hover-shadow);
      transform: translateY(-4px);
      border-color: rgba(0, 210, 255, 0.4);
    }

    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(0, 210, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 16px;
      color: #0052d4;
    }

    .card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .model-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-chip {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      border-color: #00d2ff;
      background: rgba(0, 210, 255, 0.05);
      transform: scale(1.05);
    }

    .media-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }

    .media-card-img {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background: #edf2f7;
    }

    .media-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .media-card:hover .media-card-img img {
      transform: scale(1.04);
    }

    .media-card-body {
      padding: 20px;
    }

    .media-card-body h3 {
      font-size: 17px;
      margin-bottom: 8px;
    }

    .compare-container {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      box-shadow: var(--card-shadow);
      overflow-x: auto;
      padding: 8px;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table td.highlight {
      background: rgba(0, 210, 255, 0.04);
      font-weight: 600;
      color: #0052d4;
    }

    .badge-score {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 10px;
      background: #e6fcf5;
      color: #0ca678;
      border-radius: 16px;
      font-weight: 700;
      font-size: 13px;
    }

    .steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .step-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px 20px;
      position: relative;
    }

    .step-number {
      font-size: 28px;
      font-weight: 900;
      color: rgba(0, 210, 255, 0.35);
      margin-bottom: 8px;
    }

    .step-item h3 {
      font-size: 16px;
      margin-bottom: 6px;
    }

    .step-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-question::after {
      content: "+";
      font-size: 20px;
      color: #0077b6;
      transition: transform 0.2s ease;
    }

    .faq-item.active .faq-question::after {
      content: "-";
    }

    .faq-answer {
      display: none;
      padding: 0 24px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .form-box {
      max-width: 680px;
      margin: 0 auto;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--card-shadow);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
      background: #fafcff;
    }

    .form-control:focus {
      border-color: #0052d4;
      background: #ffffff;
    }

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

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 16px;
    }

    .articles-block {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      margin-top: 24px;
    }

    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 12px;
    }

    .article-link-tag {
      background: #f0f7ff;
      color: #0052d4;
      padding: 8px 14px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 500;
      border: 1px solid rgba(0, 82, 212, 0.1);
    }

    .article-link-tag:hover {
      background: #0052d4;
      color: #ffffff;
    }

    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px;
      margin-top: 40px;
      color: var(--text-main);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .footer-col p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 8px;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: 8px;
    }

    .footer-col ul li a {
      font-size: 13px;
      color: var(--text-muted);
    }

    .footer-col ul li a:hover {
      color: #0052d4;
    }

    .qr-container {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }

    .qr-container img {
      width: 100px;
      height: 100px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      display: block;
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    .footer-links-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-bottom: 12px;
    }

    .footer-links-row a {
      color: var(--text-muted);
      font-size: 13px;
    }

    .footer-links-row a:hover {
      color: #0052d4;
    }

    .float-panel {
      position: fixed;
      right: 18px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 14px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: #0052d4;
      font-size: 18px;
      transition: all 0.3s ease;
      position: relative;
    }

    .float-btn:hover {
      background: #0052d4;
      color: #ffffff;
      transform: translateY(-2px);
    }

    .float-qr-pop {
      display: none;
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 10px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      box-shadow: 0 8px 24px rgba(0,0,0,0.15);
      text-align: center;
    }

    .float-qr-pop img {
      width: 110px;
      height: 110px;
      display: block;
    }

    .float-btn:hover .float-qr-pop {
      display: block;
    }

    @media (max-width: 992px) {
      .hero-title { font-size: 32px; }
      .hero-highlights { grid-template-columns: repeat(2, 1fr); }
      .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
      .card-grid-3 { grid-template-columns: 1fr; }
      .steps-row { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn { display: block; }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 0;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.open { display: flex; }
      .hero-highlights { grid-template-columns: 1fr; }
      .card-grid-4 { grid-template-columns: 1fr; }
      .steps-row { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .header-actions .btn-outline { display: none; }
    }