:root {
      --primary-color: #5b21b6;
      --secondary-color: #0284c7;
      --accent-color: #06b6d4;
      --holo-gradient: linear-gradient(135deg, rgba(243, 232, 255, 0.7) 0%, rgba(224, 242, 254, 0.7) 35%, rgba(254, 243, 199, 0.5) 70%, rgba(252, 231, 243, 0.7) 100%);
      --text-main: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --card-bg: rgba(255, 255, 255, 0.88);
      --card-border: rgba(203, 213, 225, 0.65);
      --border-holo: linear-gradient(135deg, #c084fc, #38bdf8, #f472b6);
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 20px 30px -10px rgba(91, 33, 182, 0.15);
      --radius: 14px;
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: #f8fafc;
      background-image: 
        radial-gradient(at 0% 0%, rgba(238, 242, 255, 0.8) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(245, 243, 255, 0.8) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(240, 249, 255, 0.6) 0px, transparent 60%),
        radial-gradient(at 100% 100%, rgba(253, 242, 248, 0.8) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(240, 253, 250, 0.8) 0px, transparent 50%);
      background-attachment: fixed;
      color: var(--text-body);
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      vertical-align: middle;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-area .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-title span {
      background: linear-gradient(135deg, #7c3aed, #0284c7, #ec4899);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-links {
      display: flex;
      gap: 0;
      align-items: center;
      list-style: none;
    }
    .nav-links li a {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 12px;
      border-radius: 8px;
    }
    .nav-links li a:hover {
      color: var(--primary-color);
      background: rgba(124, 58, 237, 0.06);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: 9999px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      border: 1px solid transparent;
      font-size: 0.92rem;
      white-space: nowrap;
      text-align: center;
    }
    .btn-holo {
      background: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 50%, #ec4899 100%);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(139, 92, 246, 0.35);
      border: none;
    }
    .btn-holo:hover {
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.45);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid #cbd5e1;
    }
    .btn-outline:hover {
      border-color: #8b5cf6;
      color: var(--primary-color);
      background: #fdf4ff;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-btn svg {
      width: 24px;
      height: 24px;
      stroke: var(--text-main);
    }
    section.page-section {
      padding: 70px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 5px 14px;
      font-size: 0.82rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      border-radius: 9999px;
      background: #f3e8ff;
      color: #6b21a8;
      margin-bottom: 12px;
      border: 1px solid rgba(216, 180, 254, 0.5);
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .hero-section {
      padding: 90px 0 70px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .hero-holo-bg {
      position: absolute;
      top: -30%;
      left: 50%;
      transform: translateX(-50%);
      width: 800px;
      height: 500px;
      background: radial-gradient(circle, rgba(192, 132, 252, 0.25) 0%, rgba(56, 189, 248, 0.2) 40%, rgba(244, 114, 182, 0.15) 70%, transparent 80%);
      filter: blur(60px);
      z-index: 0;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 1;
      max-width: 880px;
      margin: 0 auto;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      padding: 6px 18px;
      border-radius: 9999px;
      font-size: 0.88rem;
      color: #475569;
      border: 1px solid #e2e8f0;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
      margin-bottom: 24px;
    }
    .hero-tag-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }
    .hero-title {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-body);
      max-width: 760px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-cta-group .btn-main-action {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
    }
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .hero-metric-card {
      background: rgba(255, 255, 255, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius);
      padding: 24px 16px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .hero-metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--border-holo);
    }
    .hero-metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #c084fc;
    }
    .metric-value {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
      letter-spacing: -0.5px;
    }
    .metric-label {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .model-pills-bar {
      margin-top: 40px;
      padding: 16px 20px;
      background: rgba(255, 255, 255, 0.6);
      border-radius: 9999px;
      border: 1px solid rgba(226, 232, 240, 0.8);
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-pill {
      font-size: 0.82rem;
      padding: 4px 12px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 9999px;
      color: #475569;
      font-weight: 500;
      transition: all 0.2s ease;
    }
    .model-pill:hover {
      border-color: #8b5cf6;
      color: #8b5cf6;
      background: #fdf4ff;
    }
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--card-bg);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #a855f7;
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(168, 85, 247, 0.12), rgba(59, 130, 246, 0.12));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary-color);
    }
    .feature-icon-box svg {
      width: 28px;
      height: 28px;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.6;
      flex-grow: 1;
    }
    .feature-points {
      margin-top: 18px;
      padding-top: 16px;
      border-top: 1px dashed #e2e8f0;
      list-style: none;
    }
    .feature-points li {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feature-points li::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #8b5cf6;
    }
    .two-col-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .about-card-stack {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 18px 22px;
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }
    .about-feature-num {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: linear-gradient(135deg, #7c3aed, #0284c7);
      color: #fff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      flex-shrink: 0;
    }
    .about-feature-item h4 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .about-feature-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 26px 20px;
      position: relative;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .step-card-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      border: 2px solid #8b5cf6;
      color: #8b5cf6;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      box-shadow: 0 4px 10px rgba(139, 92, 246, 0.15);
    }
    .step-card h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .evaluation-box {
      background: linear-gradient(145deg, #ffffff, #fbfbfe);
      border: 1px solid #d8b4fe;
      border-radius: 18px;
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .eval-score-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid #e2e8f0;
      margin-bottom: 28px;
    }
    .score-badge-group {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }
    .score-big {
      font-size: 3.2rem;
      font-weight: 900;
      background: linear-gradient(135deg, #7c3aed, #ec4899);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }
    .score-scale {
      font-size: 1.1rem;
      color: var(--text-muted);
    }
    .score-stars {
      color: #f59e0b;
      font-size: 1.3rem;
      letter-spacing: 2px;
    }
    .table-container {
      overflow-x: auto;
      margin-top: 15px;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .compare-table th, .compare-table td {
      padding: 14px 18px;
      border-bottom: 1px solid #e2e8f0;
    }
    .compare-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }
    .compare-table tr:hover td {
      background: rgba(243, 232, 255, 0.25);
    }
    .badge-win {
      display: inline-block;
      padding: 3px 8px;
      background: #dcfce7;
      color: #15803d;
      font-weight: 600;
      border-radius: 4px;
      font-size: 0.82rem;
    }
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .case-media-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .case-media-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-media-wrap img {
      transform: scale(1.04);
    }
    .case-body {
      padding: 20px;
    }
    .case-body h4 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .case-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-content {
      font-size: 0.93rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #a855f7, #3b82f6);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .author-info h5 {
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 700;
    }
    .author-info span {
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    .faq-list {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-item.active {
      border-color: #a855f7;
      box-shadow: 0 4px 12px rgba(168, 85, 247, 0.08);
    }
    .faq-header {
      padding: 18px 22px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      user-select: none;
    }
    .faq-header h4 {
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .faq-toggle-icon {
      width: 20px;
      height: 20px;
      transition: transform 0.3s ease;
      color: var(--primary-color);
      flex-shrink: 0;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 22px;
      color: var(--text-body);
      font-size: 0.93rem;
      line-height: 1.6;
    }
    .faq-item.active .faq-body {
      max-height: 260px;
      padding: 0 22px 20px 22px;
    }
    .articles-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 26px;
      margin-bottom: 24px;
    }
    .articles-url-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
      margin-top: 14px;
    }
    .articles-url-list a {
      font-size: 0.88rem;
      color: #0284c7;
      background: #e0f2fe;
      padding: 6px 14px;
      border-radius: 6px;
    }
    .articles-url-list a:hover {
      background: #bae6fd;
    }
    .contact-form-box {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 18px;
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .form-row {
      margin-bottom: 18px;
    }
    .form-row label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-row input, .form-row select, .form-row textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 0.95rem;
      background: #fff;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s ease;
      font-family: inherit;
    }
    .form-row input:focus, .form-row select:focus, .form-row textarea:focus {
      border-color: #8b5cf6;
      box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
    }
    .contact-meta-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 18px;
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .qr-container {
      width: 140px;
      height: 140px;
      padding: 8px;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      background: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .qr-container img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }
    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      padding: 48px 0 32px 0;
      color: var(--text-body);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 32px;
      margin-bottom: 36px;
    }
    .footer-col h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: var(--text-body);
    }
    .footer-links a:hover {
      color: var(--primary-color);
    }
    .friend-links-bar {
      padding-top: 24px;
      border-top: 1px solid #f1f5f9;
      margin-bottom: 24px;
      font-size: 0.85rem;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 8px;
    }
    .friend-links-list a {
      color: var(--text-muted);
    }
    .friend-links-list a:hover {
      color: var(--primary-color);
    }
    .footer-bottom {
      text-align: center;
      padding-top: 20px;
      border-top: 1px solid #f1f5f9;
      color: var(--text-muted);
      font-size: 0.85rem;
    }
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 998;
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: center;
    }
    .kefu-trigger-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: linear-gradient(135deg, #7c3aed, #0284c7);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35);
      cursor: pointer;
      border: none;
      transition: all 0.3s ease;
    }
    .kefu-trigger-btn:hover {
      transform: scale(1.08);
    }
    .kefu-popup-box {
      position: absolute;
      right: 64px;
      bottom: 0;
      background: #ffffff;
      padding: 16px;
      border-radius: 12px;
      box-shadow: var(--shadow-md);
      border: 1px solid #e2e8f0;
      width: 180px;
      text-align: center;
      display: none;
    }
    .kefu-popup-box.open {
      display: block;
    }
    .kefu-popup-box img {
      width: 140px;
      height: 140px;
      margin-bottom: 8px;
    }
    .back-to-top {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      display: none;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      color: var(--text-muted);
      transition: all 0.2s ease;
    }
    .back-to-top:hover {
      color: var(--primary-color);
      border-color: #a855f7;
    }
    @media (max-width: 992px) {
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feature-grid, .case-gallery-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .two-col-layout {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-actions .btn-outline {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .mobile-menu {
        display: none;
        flex-direction: column;
        background: #ffffff;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        padding: 16px 20px;
        border-bottom: 1px solid #e2e8f0;
        box-shadow: var(--shadow-md);
      }
      .mobile-menu.active {
        display: flex;
      }
      .mobile-menu a {
        padding: 12px 0;
        border-bottom: 1px solid #f1f5f9;
        font-weight: 500;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .feature-grid, .case-gallery-grid, .testimonials-grid, .flow-steps-grid {
        grid-template-columns: 1fr;
      }
      .hero-metrics-grid {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .eval-score-header {
        flex-direction: column;
        align-items: flex-start;
      }
    }