.xh{--bg-cream: #FAF8F5;--bg-white: #FFFFFF;--bg-dark: #1A2A3A;--text-primary: #1A2A3A;--text-secondary: #475569;--accent: #C8A05E;--font-display: "Urbanist", sans-serif;--font-body: "Inter", sans-serif;--rule: rgba(26, 42, 58, .08)}.xh *{box-sizing:border-box}.xh .wrap{max-width:1200px;margin:0 auto;padding:0 40px}.xh .wrap-narrow{max-width:900px;margin:0 auto;padding:0 40px}.xh .eyebrow{display:block;font-family:var(--font-display);font-size:11px;font-weight:500;letter-spacing:4px;text-transform:uppercase;color:var(--accent);margin-bottom:28px}.xh .gold{color:var(--accent)}.xh .h-section{font-family:var(--font-display);font-size:clamp(28px,4vw,44px);font-weight:300;line-height:1.2;letter-spacing:-.01em;color:var(--text-primary)}.xh .lead{font-size:18px;font-weight:300;line-height:1.7;color:var(--text-secondary);max-width:680px;margin:24px auto 0}.xh .body{font-size:16px;font-weight:300;line-height:1.8;color:var(--text-secondary)}.xh .body strong,.xh .highlight{color:var(--text-primary);font-weight:500}.xh .section-header{max-width:900px;margin:0 auto 80px;text-align:center}.xh .ai-def{max-width:780px;margin:60px auto;padding:28px 32px;background:#1a2a3a0a;border-left:3px solid var(--text-primary);border-radius:0 8px 8px 0;font-size:15px;color:var(--text-secondary);line-height:1.8}.xh .ai-def strong{color:var(--text-primary)}.xh-hero-nav{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:0 40px 60px;background:#1a2a3a}.xh-hero-nav a{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:#fff;text-decoration:none;padding:12px 24px;background:#1a2a3a99;border:1px solid rgba(255,255,255,.2);border-radius:50px;transition:all .3s}.xh-hero-nav a:hover,.xh-hero-nav a.active{background:#1a2a3a;border-color:#fff}.xh .sec{padding:120px 40px}.xh .sec-white{background:var(--bg-white)}.xh .sec-cream{background:var(--bg-cream)}.xh .sec-dark{background:var(--bg-dark);color:#fff}.xh .sec-dark .h-section{color:#fff}.xh .sec-dark .eyebrow{color:#7ba7c7}.xh .sec-dark .lead{color:#ffffffb3}.xh .split{display:grid;grid-template-columns:1fr 1fr;gap:80px;max-width:1100px;margin:0 auto;align-items:center}.xh .split.reverse>.split-image{order:2}.xh .split.reverse>.split-text{order:1}.xh .split-image{position:relative;border-radius:20px;overflow:hidden;box-shadow:0 20px 40px #1a2a3a1f}.xh .split-image img{width:100%;height:420px;-o-object-fit:cover;object-fit:cover;display:block}.xh .split-badge{position:absolute;bottom:20px;left:20px;background:#1a2a3ae6;backdrop-filter:blur(10px);padding:12px 20px;border-radius:12px;border:1px solid rgba(200,160,94,.3)}.xh .split-badge .bv{font-family:var(--font-display);font-size:24px;font-weight:300;color:var(--accent);display:block}.xh .split-badge .bl{font-size:10px;color:#ffffffb3;letter-spacing:1px;text-transform:uppercase}.xh .split-caption{position:absolute;bottom:0;left:0;right:0;padding:16px 20px;background:#1a2a3ad9;backdrop-filter:blur(8px);color:#fffc;font-size:12px;line-height:1.6;border-top:1px solid rgba(255,255,255,.1);transform:translateY(100%);transition:transform .3s ease}.xh .split-image:hover .split-caption{transform:translateY(0)}@media (max-width: 900px){.xh .split-caption{transform:translateY(0);position:relative}}.xh .split-text h3{font-family:var(--font-display);font-size:clamp(26px,3.6vw,36px);font-weight:200;color:var(--text-primary);margin-bottom:24px;line-height:1.2}.xh .sec-dark .split-text h3{color:#fff}.xh .split-text p{font-size:16px;color:var(--text-secondary);line-height:1.8;margin-bottom:16px}.xh .sec-dark .split-text p{color:#ffffffbf}.xh .stat-row{display:flex;gap:40px;margin-top:32px;padding-top:32px;border-top:1px solid var(--rule)}.xh .sec-dark .stat-row{border-top-color:#ffffff1a}.xh .stat-value{font-family:var(--font-display);font-size:32px;font-weight:300;color:var(--accent)}.xh .stat-label{font-size:12px;color:var(--text-secondary);margin-top:4px}.xh .sec-dark .stat-label{color:#fff9}.xh .metrics-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;max-width:1200px;margin:0 auto}.xh .metric-card{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:32px 20px;text-align:center}.xh .metric-card .mv{font-family:var(--font-display);font-size:32px;font-weight:300;color:var(--accent);margin-bottom:8px}.xh .metric-card .ml{font-size:13px;color:#ffffffbf;line-height:1.5;margin-bottom:16px}.xh .metric-card .ms{font-size:11px;color:#ffffff73;line-height:1.5;padding-top:16px;border-top:1px solid rgba(255,255,255,.1)}.xh .table-section{max-width:1000px;margin:0 auto}.xh .data-table{width:100%;border-collapse:collapse;background:#ffffff08;border:1px solid rgba(255,255,255,.1);border-radius:16px;overflow:hidden}.xh .data-table th,.xh .data-table td{padding:18px 24px;text-align:left;border-bottom:1px solid rgba(255,255,255,.08);font-size:14px;color:#ffffffd9;vertical-align:top}.xh .data-table th{background:#ffffff0f;font-size:11px;letter-spacing:1px;text-transform:uppercase;color:#ffffff80;font-weight:500}.xh .data-table tr:last-child td{border-bottom:none}.xh .data-table .dt-highlight{color:#7ba7c7;font-weight:500}.xh .validation-image{max-width:900px;margin:60px auto;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.1)}.xh .validation-image img{width:100%;height:360px;-o-object-fit:cover;object-fit:cover;display:block}.xh .validation-image-caption{padding:16px 24px;font-size:12px;color:#fff9;background:#ffffff08;border-top:1px solid rgba(255,255,255,.1)}.xh .test-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:1100px;margin:40px auto 60px}.xh .test-gallery-item{border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.1);background:#ffffff08}.xh .test-gallery-item img{width:100%;height:160px;-o-object-fit:cover;object-fit:cover;display:block}.xh .test-gallery-label{padding:14px 16px;font-size:12px;color:#ffffffbf;text-align:center;letter-spacing:.5px;border-top:1px solid rgba(255,255,255,.08)}.xh .reliability-table{max-width:900px;margin:60px auto 0;background:#ffffff08;border:1px solid rgba(255,255,255,.1);border-radius:16px;overflow:hidden}.xh .rel-row{display:grid;grid-template-columns:1.2fr 1.6fr .9fr 1fr;gap:20px;padding:20px 28px;border-bottom:1px solid rgba(255,255,255,.08);align-items:center}.xh .rel-row:last-child{border-bottom:none}.xh .rel-head{background:#ffffff0f;font-size:11px;letter-spacing:1px;text-transform:uppercase;color:#ffffff80}.xh .rel-cell{font-size:14px;color:#ffffffd9;line-height:1.5}.xh .rel-criterion{font-family:var(--font-display);color:#7ba7c7;font-weight:500}.xh .rel-evidence{font-size:12px;color:#ffffff8c}.xh .references-section{max-width:900px;margin:0 auto}.xh .references-list{display:grid;gap:20px}.xh .reference-item{padding:24px;background:var(--bg-white);border:1px solid var(--rule);border-radius:12px}.xh .reference-item a{color:var(--text-primary);text-decoration:none;font-size:16px;font-weight:500;line-height:1.4;display:block;margin-bottom:8px}.xh .reference-item a:hover{color:var(--accent)}.xh .reference-meta{font-size:13px;color:var(--text-secondary)}.xh .reference-doi{font-size:12px;color:var(--accent);margin-top:8px;word-break:break-all}.xh .boundary-box{max-width:900px;margin:0 auto;padding:48px;background:var(--bg-white);border:1px solid var(--rule);border-radius:16px;text-align:center}.xh .boundary-box h3{font-family:var(--font-display);font-size:24px;font-weight:300;color:var(--text-primary);margin-bottom:20px}.xh .boundary-box p{font-size:16px;color:var(--text-secondary);line-height:1.8}.xh .faq-list{max-width:780px;margin:0 auto}.xh .faq-item{padding:32px 0;border-bottom:1px solid var(--rule)}.xh .faq-item:last-child{border-bottom:none}.xh .faq-q{font-size:18px;font-weight:500;color:var(--text-primary);margin-bottom:12px}.xh .faq-a{font-size:15px;color:var(--text-secondary);line-height:1.8}.xh .btn-row{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;max-width:900px;margin:0 auto}.xh .btn{display:inline-block;padding:16px 40px;font-size:12px;font-family:var(--font-display);letter-spacing:2px;text-transform:uppercase;text-decoration:none;border-radius:50px;transition:all .4s ease}.xh .btn-primary{background:var(--bg-dark);color:#fff}.xh .btn-primary:hover{background:var(--accent);color:var(--bg-dark);transform:translateY(-3px)}.xh .btn-secondary{background:transparent;color:var(--text-primary);border:1px solid var(--text-primary)}.xh .btn-secondary:hover{background:var(--text-primary);color:#fff}.xh .knowledge-nav{max-width:780px;margin:80px auto 0;padding:28px 32px;background:var(--bg-white);border:1px solid var(--rule);border-radius:12px;font-size:14px;line-height:2}.xh .knowledge-nav strong{color:var(--text-primary)}.xh .knowledge-nav a{color:var(--accent);text-decoration:none}@media (max-width: 1100px){.xh .metrics-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width: 900px){.xh .split{grid-template-columns:1fr;gap:40px}.xh .split.reverse>.split-image{order:1}.xh .split.reverse>.split-text{order:2}.xh .metrics-grid,.xh .test-gallery{grid-template-columns:1fr 1fr}.xh .rel-row{grid-template-columns:1fr;gap:8px}.xh .data-table th,.xh .data-table td{padding:14px 16px;font-size:13px}.xh .split-image img{height:280px}}@media (max-width: 600px){.xh .sec{padding:80px 24px}.xh-hero-nav{flex-direction:column;gap:8px}.xh-hero-nav a{padding:10px 18px;font-size:9px}.xh .btn-row{flex-direction:column}.xh .metrics-grid{grid-template-columns:1fr}.xh .boundary-box{padding:32px 24px}.xh .split-image img{height:220px}.xh .section-header{margin-bottom:48px}}
