:root {
      --primary-yellow: #facc15;
      --primary-yellow-hover: #eab308;
      --accent-yellow-light: #fef08a;
      --accent-yellow-subtle: #fefce8;
      --text-main: #18181b;
      --text-muted: #52525b;
      --text-light: #71717a;
      --bg-main: #fafaf9;
      --bg-card: #ffffff;
      --border-color: #e4e4e7;
      --border-yellow: #fde047;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 20px -2px rgba(250, 204, 21, 0.15), 0 2px 6px rgba(0,0,0,0.04);
      --shadow-lg: 0 10px 30px -4px rgba(234, 179, 8, 0.2), 0 4px 12px rgba(0,0,0,0.05);
      --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-main);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background-color: var(--bg-main);
      overflow-x: hidden;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      background: var(--primary-yellow);
      color: #78350f;
      font-weight: 700;
      font-size: 13px;
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      cursor: pointer;
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-yellow {
      background-color: var(--primary-yellow);
      color: #713f12;
      box-shadow: 0 4px 14px rgba(250, 204, 21, 0.4);
    }

    .btn-yellow:hover {
      background-color: var(--primary-yellow-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(250, 204, 21, 0.5);
    }

    .btn-outline {
      background-color: #ffffff;
      color: var(--text-main);
      border-color: #d4d4d8;
    }

    .btn-outline:hover {
      background-color: var(--accent-yellow-subtle);
      border-color: var(--primary-yellow);
      transform: translateY(-2px);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-title span {
      background: var(--primary-yellow);
      padding: 2px 6px;
      border-radius: var(--radius-sm);
      margin-left: 4px;
      color: #713f12;
    }

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

    .nav-links li a {
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      transition: all 0.2s;
    }

    .nav-links li a:hover {
      color: #854d0e;
      background-color: var(--accent-yellow-subtle);
    }

    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }

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

    .hero-section {
      background: linear-gradient(180deg, #fffbeb 0%, #fefce8 60%, #fafaf9 100%);
      padding: 100px 0 80px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--border-yellow);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 700;
      color: #854d0e;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background-color: #eab308;
      border-radius: 50%;
      box-shadow: 0 0 8px #eab308;
    }

    .hero-title {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.25;
      color: #09090b;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-title mark {
      background: linear-gradient(120deg, rgba(250, 204, 21, 0.4) 0%, rgba(250, 204, 21, 0.9) 100%);
      padding: 0 8px;
      border-radius: 6px;
      color: inherit;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid #fef08a;
      padding: 24px 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease;
    }

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

    .metric-value {
      font-size: 32px;
      font-weight: 900;
      color: #854d0e;
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-light);
    }

    .platform-model-marquee {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 24px 0;
      overflow: hidden;
    }

    .marquee-label {
      font-size: 13px;
      font-weight: 700;
      color: #a1a1aa;
      text-align: center;
      margin-bottom: 16px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .marquee-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 1100px;
      margin: 0 auto;
    }

    .model-chip {
      background: #f4f4f5;
      color: var(--text-main);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 999px;
      border: 1px solid #e4e4e7;
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      background: var(--primary-yellow);
      color: #713f12;
      border-color: #facc15;
      transform: scale(1.05);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      border-color: var(--primary-yellow);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .service-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .service-icon-box {
      width: 44px;
      height: 44px;
      background: var(--accent-yellow-subtle);
      border: 1px solid var(--border-yellow);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #854d0e;
      font-size: 18px;
    }

    .service-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .service-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: #854d0e;
      background: #fef9c3;
      padding: 4px 10px;
      border-radius: 4px;
      align-self: flex-start;
    }

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

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      text-align: left;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary-yellow);
      color: #713f12;
      font-weight: 900;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .score-banner {
      background: #fefce8;
      border: 1px solid #fef08a;
      border-radius: var(--radius-md);
      padding: 24px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
    }

    .score-left h3 {
      font-size: 20px;
      font-weight: 800;
      color: #713f12;
      margin-bottom: 4px;
    }

    .score-left p {
      font-size: 14px;
      color: #854d0e;
    }

    .score-right {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }

    .score-val {
      font-size: 40px;
      font-weight: 900;
      color: #ca8a04;
    }

    .score-stars {
      color: #eab308;
      font-size: 20px;
      font-weight: bold;
    }

    .table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

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

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

    .highlight-col {
      background: #fffbeb;
      font-weight: 700;
      color: #854d0e;
    }

    .media-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-img-box {
      width: 100%;
      aspect-ratio: 16 / 9;
      background-color: #e4e4e7;
      overflow: hidden;
    }

    .media-img-box.square {
      aspect-ratio: 1 / 1;
    }

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

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

    .media-body {
      padding: 20px;
    }

    .media-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .media-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f4f4f5;
      padding-top: 16px;
    }

    .user-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-yellow);
      color: #713f12;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
    }

    .user-info h4 {
      font-size: 14px;
      font-weight: 700;
    }

    .user-info p {
      font-size: 12px;
      color: var(--text-light);
    }

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

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: border-color 0.2s ease;
    }

    .faq-item.active {
      border-color: var(--primary-yellow);
    }

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

    .faq-question:hover {
      background-color: var(--accent-yellow-subtle);
    }

    .faq-icon {
      font-size: 18px;
      font-weight: bold;
      color: #854d0e;
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      padding: 0 24px;
      background: #fafaf9;
    }

    .faq-item.active .faq-answer {
      max-height: 500px;
      padding: 16px 24px;
      border-top: 1px solid #f4f4f5;
    }

    .faq-answer p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .form-contact-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-side {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-block {
      margin-bottom: 24px;
    }

    .contact-block h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .contact-meta-list {
      list-style: none;
      font-size: 14px;
      color: var(--text-muted);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .qr-container {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-top: 16px;
      background: var(--accent-yellow-subtle);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-yellow);
    }

    .qr-img {
      width: 90px;
      height: 90px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: #fff;
    }

    .qr-img img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .qr-text h4 {
      font-size: 14px;
      font-weight: 700;
      color: #713f12;
      margin-bottom: 4px;
    }

    .qr-text p {
      font-size: 12px;
      color: #854d0e;
    }

    .form-side form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      background: #fafaf9;
      transition: all 0.2s ease;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary-yellow);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(250, 204, 21, 0.2);
    }

    .form-textarea {
      resize: vertical;
      min-height: 90px;
    }

    .site-footer {
      background: #18181b;
      color: #d4d4d8;
      padding: 60px 0 24px;
      border-top: 4px solid var(--primary-yellow);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 32px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-col p {
      font-size: 13px;
      color: #a1a1aa;
      line-height: 1.6;
    }

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

    .footer-links a {
      font-size: 13px;
      color: #a1a1aa;
      transition: color 0.2s;
    }

    .footer-links a:hover {
      color: var(--primary-yellow);
    }

    .footer-bottom {
      border-top: 1px solid #27272a;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
      color: #71717a;
    }

    .friend-links-box {
      background: #27272a;
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      margin-bottom: 24px;
    }

    .friend-links-box span {
      color: #facc15;
      font-weight: 700;
      font-size: 13px;
      margin-right: 12px;
    }

    .friend-links-box a {
      color: #d4d4d8;
      font-size: 13px;
      margin-right: 16px;
      display: inline-block;
      transition: color 0.2s;
    }

    .friend-links-box a:hover {
      color: #facc15;
    }

    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .tool-btn {
      width: 44px;
      height: 44px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 18px;
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .tool-btn:hover {
      background: var(--primary-yellow);
      transform: scale(1.1);
    }

    @media (max-width: 992px) {
      .services-grid, .media-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-steps, .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-contact-wrap {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .section-title {
        font-size: 26px;
      }
      .hero-title {
        font-size: 28px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .services-grid, .media-grid, .reviews-grid, .workflow-steps, .hero-metrics-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
    }