:root {
      --bg-main: #f8fafc;
      --bg-surface: #ffffff;
      --bg-subtle: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --neon-cyan: #06b6d4;
      --neon-purple: #8b5cf6;
      --neon-lime: #10b981;
      --neon-pink: #ec4899;
      --border-color: #e2e8f0;
      --card-border: rgba(14, 165, 233, 0.18);
      --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
      --neon-glow: 0 0 20px rgba(6, 182, 212, 0.25);
      --gradient-accent: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 50%, #ec4899 100%);
      --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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-main);
      line-height: 1.6;
    }

    body {
      background: radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.04) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.04) 0%, transparent 40%),
                  #f8fafc;
      color: var(--text-main);
      overflow-x: hidden;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }

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

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

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

    .brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      background: var(--gradient-accent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.92rem;
      font-weight: 600;
      padding: 8px 12px;
      border-radius: 6px;
      transition: color 0.2s ease, background-color 0.2s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: #0284c7;
      background: rgba(14, 165, 233, 0.08);
    }

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

    .btn-header-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--gradient-accent);
      color: #ffffff;
      padding: 8px 18px;
      border-radius: 9999px;
      font-size: 0.88rem;
      font-weight: 700;
      text-decoration: none;
      box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-header-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(14, 165, 233, 0.45);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* Hero Section (No Image Allowed as per Rules) */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
      text-align: center;
      background: linear-gradient(180deg, rgba(6, 182, 212, 0.06) 0%, rgba(248, 250, 252, 0) 100%);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #e0f2fe;
      border: 1px solid #7dd3fc;
      color: #0369a1;
      font-size: 0.85rem;
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 9999px;
      margin-bottom: 24px;
      box-shadow: 0 2px 8px rgba(2, 132, 199, 0.1);
    }

    .hero-badge .dot {
      width: 8px;
      height: 8px;
      background: #0284c7;
      border-radius: 50%;
      box-shadow: 0 0 8px #0284c7;
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.03em;
    }

    .hero-title span {
      background: var(--gradient-accent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

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

    .btn-main-official {
      background: linear-gradient(135deg, #0284c7 0%, #6366f1 100%);
      color: #ffffff;
      padding: 14px 34px;
      border-radius: 12px;
      font-size: 1.05rem;
      font-weight: 700;
      text-decoration: none;
      box-shadow: 0 10px 25px rgba(2, 132, 199, 0.35);
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-main-official:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(2, 132, 199, 0.45);
    }

    .btn-secondary-link {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid #cbd5e1;
      padding: 14px 28px;
      border-radius: 12px;
      font-size: 1.05rem;
      font-weight: 700;
      text-decoration: none;
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-secondary-link:hover {
      border-color: #0284c7;
      color: #0284c7;
      background: #f0f9ff;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 10px;
    }

    .metric-card {
      background: var(--bg-surface);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 20px 16px;
      box-shadow: var(--card-shadow);
      text-align: center;
      transition: transform 0.25s ease, border-color 0.25s ease;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      border-color: #38bdf8;
    }

    .metric-num {
      font-size: 2rem;
      font-weight: 800;
      color: #0284c7;
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* Model Badges Strip */
    .models-ticker-section {
      padding: 24px 0;
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
    }

    .models-label {
      text-align: center;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-tag {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      padding: 5px 12px;
      border-radius: 8px;
      font-size: 0.78rem;
      font-weight: 600;
      color: #334155;
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      border-color: #06b6d4;
      color: #0891b2;
      background: #ecfeff;
    }

    /* Common Section Styles */
    .page-section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 46px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 800;
      text-transform: uppercase;
      color: #0284c7;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
      background: #e0f2fe;
      padding: 4px 12px;
      border-radius: 9999px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.02em;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

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

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

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

    .feature-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 18px;
      padding: 26px 22px;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      border-color: #06b6d4;
      box-shadow: 0 16px 32px rgba(6, 182, 212, 0.12);
    }

    .feature-icon-box {
      width: 46px;
      height: 46px;
      border-radius: 12px;
      background: linear-gradient(135deg, #e0f2fe 0%, #f3e8ff 100%);
      color: #0284c7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 16px;
      border: 1px solid rgba(14, 165, 233, 0.2);
    }

    .feature-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* Comparison Table Component */
    .comparison-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 30px;
      box-shadow: var(--card-shadow);
      overflow-x: auto;
    }

    .rating-banner {
      background: linear-gradient(135deg, #0369a1 0%, #4338ca 100%);
      color: #ffffff;
      border-radius: 14px;
      padding: 20px 24px;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }

    .rating-score-box {
      display: flex;
      align-items: baseline;
      gap: 10px;
    }

    .score-big {
      font-size: 2.6rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .stars {
      color: #facc15;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .comparison-table th, .comparison-table td {
      padding: 14px 16px;
      border-bottom: 1px solid #f1f5f9;
    }

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

    .comparison-table tr:hover td {
      background: #f8fafc;
    }

    .highlight-col {
      background: #f0fdf4;
      font-weight: 700;
      color: #166534;
      border-left: 2px solid #22c55e;
      border-right: 2px solid #22c55e;
    }

    /* Workflow Steps Component */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--card-shadow);
      transition: transform 0.25s ease;
    }

    .step-box:hover {
      transform: translateY(-4px);
      border-color: #8b5cf6;
    }

    .step-num {
      position: absolute;
      top: -12px;
      left: 20px;
      background: var(--gradient-accent);
      color: #ffffff;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.82rem;
      font-weight: 800;
    }

    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-top: 6px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* Cases & Visuals */
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 18px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: transform 0.25s ease;
    }

    .case-card:hover {
      transform: translateY(-5px);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #f1f5f9;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-wrap.square {
      aspect-ratio: 1 / 1;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }

    .case-content {
      padding: 20px;
    }

    .case-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: #0284c7;
      background: #e0f2fe;
      padding: 3px 8px;
      border-radius: 6px;
      display: inline-block;
      margin-bottom: 8px;
    }

    .case-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

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

    /* Banner Promotions Container */
    .promo-banner-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 36px;
    }

    .promo-banner-item {
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
    }

    .ai-page-image {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    /* Reviews Section */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 22px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #38bdf8, #818cf8);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }

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

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

    .review-body {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .review-score {
      color: #f59e0b;
      font-size: 0.85rem;
    }

    /* FAQ Section */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }

    .faq-item.active {
      border-color: #0284c7;
      box-shadow: 0 4px 16px rgba(2, 132, 199, 0.08);
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: #0284c7;
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
      padding: 0 22px;
    }

    .faq-item.active .faq-answer {
      max-height: 240px;
      padding: 16px 22px 20px;
      border-top: 1px solid #f1f5f9;
    }

    /* Form & Contact Section */
    .form-section-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 32px;
      box-shadow: var(--card-shadow);
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 20px;
    }

    .contact-item-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: #e0f2fe;
      color: #0284c7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      flex-shrink: 0;
    }

    .contact-item-content h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }

    .contact-item-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .qr-card-box {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid #f1f5f9;
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .qr-card-box img {
      width: 100px;
      height: 100px;
      border-radius: 10px;
      border: 1px solid #e2e8f0;
      display: block;
    }

    .form-container-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 20px;
      padding: 32px;
      box-shadow: var(--card-shadow);
    }

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

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.92rem;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      background: #f8fafc;
      color: var(--text-main);
      transition: all 0.2s ease;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: #0284c7;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }

    textarea.form-control {
      min-height: 95px;
      resize: vertical;
    }

    .btn-submit {
      width: 100%;
      background: var(--gradient-accent);
      color: #ffffff;
      border: none;
      padding: 14px;
      border-radius: 12px;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(14, 165, 233, 0.35);
      transition: all 0.2s ease;
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(14, 165, 233, 0.45);
    }

    /* Articles & Links Grid */
    .article-links-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      margin-bottom: 30px;
    }

    .article-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
      margin-top: 12px;
    }

    .article-links-list li a {
      color: #0369a1;
      text-decoration: none;
      font-size: 0.88rem;
      background: #f0f9ff;
      border: 1px solid #bae6fd;
      padding: 6px 14px;
      border-radius: 8px;
      display: inline-block;
      transition: all 0.2s ease;
    }

    .article-links-list li a:hover {
      background: #0284c7;
      color: #ffffff;
    }

    .friend-links-box {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 20px;
      margin-bottom: 40px;
    }

    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .friend-links-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friend-links-wrapper a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.85rem;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 6px 12px;
      border-radius: 6px;
      transition: all 0.2s ease;
    }

    .friend-links-wrapper a:hover {
      color: #0284c7;
      border-color: #38bdf8;
    }

    /* Footer */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 40px 0 30px;
      color: var(--text-muted);
      font-size: 0.88rem;
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 16px;
    }

    .footer-nav {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 18px;
      list-style: none;
    }

    .footer-nav a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.88rem;
      font-weight: 600;
    }

    .footer-nav a:hover {
      color: #0284c7;
    }

    .footer-copyright {
      color: var(--text-light);
      font-size: 0.82rem;
    }

    /* Floating Customer Service & Back to Top */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 990;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      box-shadow: 0 4px 14px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      text-decoration: none;
      font-size: 1.1rem;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .float-btn:hover {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      transform: scale(1.08);
    }

    .float-btn.official-cta {
      background: var(--gradient-accent);
      color: #ffffff;
      border: none;
      font-size: 0.78rem;
      font-weight: 800;
      text-align: center;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.2rem; }
      .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .hero-metrics { grid-template-columns: repeat(2, 1fr); }
      .steps-container { grid-template-columns: repeat(2, 1fr); }
      .form-section-layout { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.show { display: flex; }
      .mobile-menu-toggle { display: block; }
      .hero-title { font-size: 1.8rem; }
      .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
      .hero-metrics { grid-template-columns: 1fr 1fr; }
      .steps-container { grid-template-columns: 1fr; }
      .promo-banner-grid { grid-template-columns: 1fr; }
      .rating-banner { flex-direction: column; text-align: center; }
      .header-actions .btn-header-cta { display: none; }
    }