.immersive-header,.immersive-main,.immersive-footer { width:min(1120px,calc(100% - 48px));margin-inline:auto; }
.immersive-header { display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:76px;border-bottom:1px solid var(--border); }
.immersive-header img { object-fit:contain;mix-blend-mode:multiply; }
.back-link { font-size:12px;font-weight:600;text-decoration:none; }
.back-link:hover { text-decoration:underline; }
.immersive-intro { max-width:720px;margin:32px 0 26px; }
.immersive-intro h1 { margin:6px 0 10px;font-size:clamp(28px,4vw,42px);line-height:1.15;letter-spacing:-1.2px;font-weight:600; }
.immersive-intro h1 span { color:var(--red); }
.immersive-intro>p:last-child { margin:0;color:var(--muted);font-size:14px;max-width:620px; }
.immersive-intro>p:not(.eyebrow) { margin:0;color:var(--muted);font-size:14px;max-width:660px; }
.immersive-facts { display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;font-size:11px;font-weight:600; }
.immersive-facts span { padding:4px 10px;border:1px solid var(--border);border-radius:20px;background:var(--paper); }
.surface-picker { display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:0 0 20px; }
.surface-picker legend { margin-bottom:8px;font-size:11px;color:var(--muted);font-weight:600; }
.surface-picker button { display:inline-flex;align-items:center;gap:9px;min-height:46px;padding:10px 16px;border:1px solid var(--border);border-radius:10px;background:var(--paper);color:var(--green);font-size:12px;font-weight:600; }
.surface-picker button[aria-pressed="true"] { background:var(--green);border-color:var(--green);color:var(--paper); }
.surface-picker svg { width:21px;height:21px; }
.surface-picker p { margin:0 0 0 4px;font-size:11px;color:var(--muted); }
.immersive-layout { display:grid;grid-template-columns:minmax(0,1.5fr) minmax(300px,1fr);align-items:start;gap:24px; }
.viewer-card { position:sticky;top:16px;overflow:hidden;border:1px solid var(--border);border-radius:18px;background:radial-gradient(ellipse at 50% 40%,#fffefa,#edf0e5);box-shadow:0 10px 30px #103f3508; }
.viewer-heading { position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;padding:18px 22px 0;font-size:11px;letter-spacing:1px;font-weight:600; }
.dimension-chip { padding:4px 10px;border:1px solid #c8d0ba;border-radius:20px;letter-spacing:0; }
model-viewer { display:block;width:100%;height:430px;--poster-color:transparent;outline:none; }
.viewer-toolbar { display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:4px;padding:12px 12px 0; }
.viewer-toolbar button { min-height:40px;padding:6px 11px;border:1px solid transparent;border-radius:8px;background:#fffefa99;color:var(--green);font-size:11px;font-weight:600; }
.viewer-toolbar button:hover:not(:disabled),.viewer-toolbar button[aria-pressed="true"] { background:var(--soft);border-color:var(--border); }
#place-button { position:absolute;bottom:12px;left:20px;width:calc(100% - 40px);min-height:48px;font-size:14px; }
.viewer-loading { position:absolute;inset:120px 15px auto;display:flex;align-items:center;justify-content:center;gap:10px;text-align:center;color:var(--muted);font-size:12px;pointer-events:none; }
.loading-ring { display:inline-block;width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--green);border-radius:50%;animation:loading-spin 1s linear infinite; }
@keyframes loading-spin { to { transform:rotate(360deg); } }
.viewer-error { position:absolute;top:66px;left:24px;right:24px;text-align:center;background:#f7f4ec; }
.viewer-error img { width:230px;height:230px;object-fit:contain;margin:0 auto;border-radius:12px; }
.viewer-error p { margin:12px 0; }
.viewer-hint { margin:0 20px 16px;color:var(--muted);text-align:center;font-size:11px; }
.placement-controls { padding:18px 22px;background:var(--paper);border-top:1px solid var(--border); }
.ar-status { margin:10px 0 0;font-size:12px;line-height:1.7;color:var(--muted); }
.ar-status:only-child,.placement-controls .button[hidden]+.ar-status { margin-top:0; }
.ios-direct { width:100%;margin-top:12px; }
.ios-direct img { width:24px;height:24px;border-radius:4px;object-fit:cover; }
.surface-guide { padding:24px;border:1px solid #ced8bf;border-radius:16px;background:#eef2e7; }
.surface-guide h2 { margin:6px 0 18px;font-size:23px;line-height:1.3;letter-spacing:-.5px;font-weight:600; }
.surface-guide ol { list-style:none;margin:0;padding:0; }
.surface-guide li { display:flex;gap:12px;margin-top:16px; }
.surface-guide li>span { flex:0 0 26px;height:26px;display:grid;place-items:center;border-radius:50%;background:var(--paper);border:1px solid #d2dcc6;font-size:11px;font-weight:700; }
.surface-guide li strong { font-size:12px;font-weight:600; }
.surface-guide li p { margin:4px 0 0;color:var(--muted);font-size:12px;line-height:1.7; }
.surface-tip { margin:18px 0 0;padding-top:14px;border-top:1px solid #d2dcc6;font-size:11px;line-height:1.8;color:var(--green); }
.placement-troubleshooting { margin-top:16px;border-top:1px solid #d2dcc6;padding-top:12px;font-size:11px;color:var(--muted); }
.placement-troubleshooting summary { min-height:34px;padding:6px 0;cursor:pointer;color:var(--green);font-weight:600; }
.placement-troubleshooting p { margin:8px 0;line-height:1.8; }
.immersive-details { display:grid;gap:18px; }
.phone-card { padding:24px;border:1px solid var(--border);border-radius:16px;background:var(--paper); }
.phone-card h2 { font-size:21px;letter-spacing:-.5px;line-height:1.3;margin:6px 0 18px;font-weight:600; }
.large-qr { display:block;width:224px;max-width:100%;margin:0 auto;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:#fff; }
.large-qr img { width:100%;height:auto; }
.phone-qr-caption { font-size:12px;color:var(--muted);text-align:center;margin:12px 0 18px; }
.phone-card ol { margin:0;padding-left:20px;font-size:12px; }
.phone-card li { padding-left:4px;margin:10px 0; }
.phone-help { margin:16px 0 0;padding-top:14px;border-top:1px solid var(--border);font-size:11px;color:var(--muted); }
.phone-start { font-size:12px;color:var(--muted);line-height:1.8; }
.product-note { display:flex;gap:14px;align-items:center; }
.product-note img { width:88px;height:88px;border-radius:12px;object-fit:cover; }
.product-note strong,.product-note span,.product-note a { display:block; }
.product-note strong { margin:4px 0;font-size:14px; }
.product-note span,.product-note a { font-size:11px; }
.product-note span { color:var(--muted); }
.product-note a { margin-top:8px;font-weight:600;text-underline-offset:3px; }
.model-note { margin:0;color:var(--muted);font-size:11px;line-height:1.8; }
.immersive-footer { padding:28px 0 20px;color:var(--muted);font-size:11px; }
@media(max-width:720px) {
 .immersive-header,.immersive-main,.immersive-footer { width:calc(100% - 32px); }
 .immersive-header { min-height:64px;gap:10px; }
 .immersive-header img { width:108px;height:34px; }
 .back-link { font-size:11px; }
 .immersive-intro { margin:22px 0 20px; }
 .immersive-intro>p:last-child { font-size:12px; }
 .immersive-intro>p:not(.eyebrow) { font-size:12px; }
 .immersive-facts { gap:6px;margin-top:12px;font-size:10px; }
 .surface-picker { gap:8px;margin-bottom:16px; }
 .surface-picker button { padding:10px 13px;flex:1;justify-content:center; }
 .surface-picker p { flex-basis:100%;margin:0;font-size:10px; }
 .immersive-layout { grid-template-columns:minmax(0,1fr);gap:20px; }
 .viewer-card { position:relative;top:auto; }
 model-viewer { height:330px; }
 .viewer-heading { padding:16px 18px 0; }
 .phone-card { padding:20px; }
 .large-qr,.phone-qr-caption { display:none; }
 .phone-card h2 { margin-bottom:12px; }
 .surface-guide { padding:20px; }
 .phone-card ol { font-size:12px; }
}
@media(prefers-reduced-motion:reduce) { .loading-ring { animation:none; } }
@media(max-width:720px) and (pointer:fine) {
 .large-qr { display:block;width:180px; }
 .phone-qr-caption { display:block; }
}
@media(max-width:720px) and (pointer:coarse) { .phone-card { display:none; } }
.viewer-card:fullscreen { display:flex;flex-direction:column;width:100vw;height:100dvh;top:0;border:0;border-radius:0;overflow:auto;background:var(--cream); }
.viewer-card:fullscreen model-viewer { flex:1;min-height:220px;height:auto; }
.viewer-card:fullscreen .placement-controls { flex:none; }
.viewer-card::backdrop { background:var(--cream); }