:root {
      --brand-red: #D32F2F;
      --brand-red-dark: #B71C1C;
      --brand-red-light: #FFEBEE;
      --brand-red-gradient: linear-gradient(135deg, #E53935 0%, #C62828 100%);
      --accent-gold: #F59E0B;
      --bg-main: #FAFAFA;
      --bg-card: #FFFFFF;
      --text-main: #1F2937;
      --text-muted: #4B5563;
      --text-light: #6B7280;
      --border-color: #E5E7EB;
      --border-red: #FFCDD2;
      --container-width: 1200px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
      --shadow-md: 0 6px 16px rgba(183, 28, 28, 0.08);
      --shadow-lg: 0 12px 28px rgba(183, 28, 28, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

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

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

    .brand-logo-wrap {
      max-width: 140px;
      height: 38px;
      display: flex;
      align-items: center;
    }

    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--brand-red-dark);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--brand-red);
      background-color: var(--brand-red-light);
    }

    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-red-outline {
      border: 1.5px solid var(--brand-red);
      color: var(--brand-red);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 700;
      transition: all 0.25s;
    }

    .btn-red-outline:hover {
      background: var(--brand-red);
      color: #FFFFFF;
    }

    .btn-red-solid {
      background: var(--brand-red-gradient);
      color: #FFFFFF;
      padding: 9px 22px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 700;
      box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
      transition: all 0.25s;
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }

    .btn-red-solid:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(211, 47, 47, 0.4);
      color: #FFFFFF;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 1.1rem;
      color: var(--text-main);
    }

    .section {
      padding: 70px 0;
      position: relative;
    }

    .section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid #F3F4F6;
      border-bottom: 1px solid #F3F4F6;
    }

    .section-tint {
      background-color: #FFF9F9;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--brand-red);
      background-color: var(--brand-red-light);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .hero-section {
      padding: 60px 0 80px;
      background: radial-gradient(circle at 50% 10%, #FFEBEE 0%, #FAFAFA 70%);
      border-bottom: 1px solid #FEE2E2;
      position: relative;
    }

    .hero-wrap {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 1px solid var(--border-red);
      padding: 6px 18px;
      border-radius: 30px;
      margin-bottom: 24px;
      box-shadow: 0 2px 8px rgba(211, 47, 47, 0.08);
    }

    .hero-badge-tag {
      background: var(--brand-red);
      color: #FFF;
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 12px;
      font-weight: 700;
    }

    .hero-badge-text {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--brand-red-dark);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: #111827;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title .highlight {
      color: var(--brand-red);
      background: linear-gradient(180deg, transparent 65%, #FFCDD2 65%);
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 820px;
      margin: 0 auto 36px;
    }

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

    .btn-hero-primary {
      background: var(--brand-red-gradient);
      color: #FFFFFF;
      font-size: 1.1rem;
      font-weight: 800;
      padding: 14px 36px;
      border-radius: 40px;
      box-shadow: 0 8px 24px rgba(211, 47, 47, 0.35);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(211, 47, 47, 0.45);
      color: #FFFFFF;
    }

    .btn-hero-secondary {
      background: #FFFFFF;
      color: var(--text-main);
      font-size: 1.1rem;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: 40px;
      border: 1.5px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .btn-hero-secondary:hover {
      border-color: var(--brand-red);
      color: var(--brand-red);
      transform: translateY(-3px);
    }

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

    .stat-card {
      background: #FFFFFF;
      border: 1px solid var(--border-red);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.25s ease;
    }

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

    .stat-value {
      font-size: 1.9rem;
      font-weight: 800;
      color: var(--brand-red);
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feature-card:hover {
      border-color: var(--brand-red);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .feature-icon-box {
      width: 48px;
      height: 48px;
      background: var(--brand-red-light);
      color: var(--brand-red);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 900;
      margin-bottom: 18px;
    }

    .feature-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .mini-tag {
      font-size: 0.75rem;
      background: #F3F4F6;
      color: var(--text-muted);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 500;
    }

    .models-cloud-wrap {
      background: #FFFFFF;
      border: 1px solid var(--border-red);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-pill {
      background: #FFF5F5;
      color: var(--brand-red-dark);
      border: 1px solid var(--border-red);
      padding: 8px 16px;
      border-radius: 24px;
      font-size: 0.9rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: all 0.2s ease;
    }

    .model-pill:hover {
      background: var(--brand-red);
      color: #FFFFFF;
      transform: scale(1.04);
    }

    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .process-step {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--brand-red);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

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

    .step-num {
      width: 32px;
      height: 32px;
      margin: 0 auto 12px;
      background: var(--brand-red-light);
      color: var(--brand-red);
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
    }

    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .review-score-hero {
      background: linear-gradient(135deg, #FFF5F5 0%, #FFFFFF 100%);
      border: 2px solid var(--border-red);
      border-radius: var(--radius-lg);
      padding: 36px;
      text-align: center;
      margin-bottom: 36px;
      box-shadow: var(--shadow-md);
    }

    .score-stars {
      color: var(--accent-gold);
      font-size: 1.6rem;
      margin-bottom: 8px;
      letter-spacing: 4px;
    }

    .score-badge {
      font-size: 3rem;
      font-weight: 900;
      color: var(--brand-red);
      line-height: 1;
      margin-bottom: 10px;
    }

    .score-badge span {
      font-size: 1.3rem;
      color: var(--text-muted);
      font-weight: 600;
    }

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

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .custom-table th {
      background: #FEE2E2;
      color: var(--brand-red-dark);
      padding: 16px 20px;
      font-weight: 700;
      border-bottom: 2px solid var(--border-red);
    }

    .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      color: var(--text-main);
    }

    .custom-table tr:hover {
      background-color: #FFF9F9;
    }

    .custom-table .highlight-col {
      background-color: #FFF5F5;
      font-weight: 700;
      color: var(--brand-red-dark);
    }

    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .gallery-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

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

    .gallery-img-wrap {
      background: #F3F4F6;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      aspect-ratio: 16/9;
    }

    .gallery-img-wrap.square {
      aspect-ratio: 4/3;
    }

    .gallery-content {
      padding: 20px;
    }

    .gallery-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .gallery-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .form-box {
      background: #FFFFFF;
      border: 1px solid var(--border-red);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-label {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background-color: #FAFAFA;
      transition: all 0.2s ease;
      font-family: inherit;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--brand-red);
      background-color: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
    }

    .form-textarea {
      resize: vertical;
      min-height: 110px;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-item.active {
      border-color: var(--brand-red);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
      background: #FFFFFF;
    }

    .faq-item.active .faq-question {
      color: var(--brand-red-dark);
      background: #FFF9F9;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--brand-red);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      background: #FFF9F9;
      border-top: 1px solid #FEE2E2;
    }

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

    .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-stars {
      color: var(--accent-gold);
      font-size: 1.1rem;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F3F4F6;
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      background: var(--brand-red-light);
      color: var(--brand-red-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }

    .reviewer-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .reviewer-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    .articles-container {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
    }

    .external-article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 20px;
    }

    .ext-link-pill {
      background: #F3F4F6;
      color: var(--text-muted);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 500;
      transition: all 0.2s ease;
    }

    .ext-link-pill:hover {
      background: var(--brand-red-light);
      color: var(--brand-red);
    }

    .site-footer {
      background: #1A1A1A;
      color: #D1D5DB;
      padding: 60px 0 24px;
      margin-top: auto;
      border-top: 4px solid var(--brand-red);
    }

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

    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.7;
      color: #9CA3AF;
      margin-bottom: 18px;
    }

    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 16px;
      border-left: 3px solid var(--brand-red);
      padding-left: 8px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links li a {
      color: #9CA3AF;
      font-size: 0.9rem;
    }

    .footer-links li a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }

    .footer-qr-box {
      background: #262626;
      border-radius: var(--radius-sm);
      padding: 16px;
      text-align: center;
      display: inline-block;
    }

    .footer-qr-img {
      max-width: 120px;
      margin: 0 auto 8px;
      border-radius: 4px;
    }

    .footer-qr-text {
      font-size: 0.8rem;
      color: #D1D5DB;
    }

    .footer-bottom {
      border-top: 1px solid #333333;
      padding-top: 24px;
      text-align: center;
      font-size: 0.88rem;
      color: #6B7280;
    }

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

    .friendly-links-wrap a {
      color: #9CA3AF;
      font-size: 0.88rem;
    }

    .friendly-links-wrap a:hover {
      color: var(--brand-red-light);
    }

    .float-service-bar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      background: var(--brand-red-gradient);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      box-shadow: 0 4px 14px rgba(211, 47, 47, 0.4);
      cursor: pointer;
      transition: all 0.25s ease;
      border: none;
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    @media (max-width: 1024px) {
      .grid-3, .reviews-grid, .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(3, 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: #FFFFFF;
        flex-direction: column;
        padding: 16px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .header-cta .btn-red-outline {
        display: none;
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .grid-3, .grid-2, .reviews-grid, .hero-stats-grid, .gallery-grid, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }