:root{color-scheme:light dark;--space: 16px;--radius: 16px;--header-h: 56px;--max-w: 600px;--elev-1: 0 2px 10px rgba(0,0,0,.08);--elev-2: 0 8px 32px rgba(0,0,0,.12);--primary: #2563eb;--primary-pressed: #1d4ed8;--text: #111;--text-muted: #555;--bg: #ffffff;--bg-elev: rgba(255,255,255,.95);--banner: #e7f3ff;--success: #16a34a}*{box-sizing:border-box}[hidden]{display:none!important}html,body,#app{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}.header-bar{position:sticky;top:0;height:var(--header-h);background:var(--bg-elev);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--elev-1);z-index:10}.header-content{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 var(--space);max-width:var(--max-w);margin:0 auto}.header-title{margin:0;text-align:center;font-size:18px;font-weight:600}.help-icon-btn{justify-self:end;width:36px;height:36px;border-radius:999px;border:none;background:transparent;color:var(--text)}.compatibility-banner{background:var(--banner)}.banner-content{max-width:var(--max-w);margin:0 auto;padding:10px var(--space);display:flex;gap:12px;align-items:center;justify-content:space-between;font-size:14px}.banner-link{background:transparent;color:var(--primary);border:none;padding:6px 8px;font-weight:600}.main-content{padding:24px var(--space);display:grid;gap:20px;max-width:var(--max-w);margin:0 auto}.hero-steps{display:grid;grid-template-columns:1fr;gap:16px}.step-item{text-align:left;display:grid;grid-template-columns:40px 1fr;align-items:center;gap:12px}.step-icon{color:var(--text);opacity:.9;margin:0;justify-self:center}.step-label{font-size:15px;color:var(--text);font-weight:500}.cta-container{display:grid;gap:8px}.primary-cta{font-size:16px;font-weight:700;padding:16px 24px;border-radius:999px;border:none;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease,background .12s ease;background:var(--primary);color:#fff;box-shadow:0 6px 16px #2563eb59}.primary-cta:hover:not(:disabled){transform:scale(1.03)}.primary-cta:active:not(:disabled){background:var(--primary-pressed);transform:scale(1)}.primary-cta:disabled{opacity:.6;cursor:not-allowed}.secondary-link{background:transparent;color:var(--primary);border:none;font-weight:600}.ios-notice{background:var(--bg-elev);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:20px;border-radius:var(--radius);text-align:center;box-shadow:var(--elev-2);max-width:var(--max-w);margin:var(--space) auto}.ar-container{min-height:60vh;position:relative;background:transparent;border-radius:var(--radius);overflow:hidden;box-shadow:var(--elev-2)}.ar-container.fullscreen{position:fixed;top:0;right:0;bottom:0;left:0;min-height:100vh;border-radius:0;box-shadow:none;z-index:8}.ar-container canvas{width:100%!important;height:100%!important;display:block}.mindar-active{background:transparent!important}.ar-loading{padding:20px;text-align:center}.ar-chrome{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:10}.close-btn,.help-ar-btn{pointer-events:auto;width:40px;height:40px;border-radius:999px;border:none;background:#00000080;color:#fff}.ar-container.fullscreen.portrait .close-btn{position:absolute;top:max(var(--space),env(safe-area-inset-top));right:max(var(--space),env(safe-area-inset-right))}.ar-container.fullscreen.landscape .close-btn{position:absolute;top:max(var(--space),env(safe-area-inset-top));left:max(var(--space),env(safe-area-inset-left))}.ar-hint{position:absolute;left:50%;transform:translate(-50%);top:max(var(--space),env(safe-area-inset-top));background:#000000b3;color:#fff;padding:10px 14px;border-radius:10px;font-size:14px}.ar-cta-rail{position:fixed;z-index:9}.ar-cta-rail.portrait{left:max(var(--space),env(safe-area-inset-left));right:max(var(--space),env(safe-area-inset-right));bottom:max(var(--space),env(safe-area-inset-bottom));display:grid;place-items:center}.ar-cta-rail.landscape{top:50%;right:max(var(--space),env(safe-area-inset-right));transform:translateY(-50%)}.learn-more-btn{padding:12px 16px;border-radius:12px;border:none;background:var(--bg-elev);box-shadow:var(--elev-1)}.ar-cta-rail.landscape .learn-more-btn{writing-mode:vertical-rl;transform:rotate(180deg);padding:16px 12px;border-radius:16px}.primer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000052;display:grid;place-items:center;z-index:20}.primer-card{width:min(90%,420px);background:var(--bg);border-radius:24px;padding:20px;box-shadow:var(--elev-2);text-align:center}.primer-card h2{margin:0 0 8px;font-size:18px}.primer-card p{margin:0;color:var(--text-muted)}.spinner{width:28px;height:28px;border:3px solid rgba(0,0,0,.12);border-top-color:var(--primary);border-radius:999px;margin:16px auto 0;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.permission-banner{position:sticky;top:0;background:#fff7ed}.permission-banner .banner-content{max-width:var(--max-w);margin:0 auto;padding:10px var(--space)}.help-sheet{position:fixed;top:0;right:0;bottom:0;left:0;display:none;align-items:end;background:#00000052;z-index:30}.help-sheet.open{display:grid}.help-content{background:var(--bg);border-top-left-radius:24px;border-top-right-radius:24px;box-shadow:var(--elev-2);padding:12px var(--space) calc(var(--space) + env(safe-area-inset-bottom));max-height:90vh;overflow:auto}.help-header{display:flex;align-items:center;justify-content:space-between}.close-help{border:none;background:transparent;width:40px;height:40px}.help-section{padding:12px 0}.help-section h3{margin:8px 0;font-size:16px}.help-section p{margin:0;color:var(--text-muted)}.fallback-viewer{padding:24px var(--space)}.fallback-content{max-width:var(--max-w);margin:0 auto;text-align:center}.fallback-media{margin:12px 0}.fallback-image{width:100%;height:auto;border-radius:12px;box-shadow:var(--elev-1)}.footer{padding:12px var(--space);text-align:center;color:var(--text-muted)}.privacy-line{margin:0;font-size:12px}.privacy-link{border:none;background:transparent;color:var(--primary);font-weight:600;margin-left:6px}button{font-size:16px}.cta-landing{padding:24px var(--space);max-width:var(--max-w);margin:0 auto;min-height:60vh}.cta-content{display:grid;gap:32px;text-align:center}.cta-header{display:flex;align-items:center;gap:16px}.back-btn{background:var(--bg-elev);border:1px solid var(--border);border-radius:8px;padding:8px;cursor:pointer;color:var(--text)}.cta-message h2{color:var(--primary);margin-bottom:16px}.cta-features{display:grid;gap:16px;max-width:400px;margin:24px auto}.feature-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-elev);border-radius:8px}.feature-icon{font-size:20px}@media (max-width: 480px){.header-title{font-size:18px}.main-content{padding:16px var(--space)}.hero-steps{grid-template-columns:1fr}.ar-container{min-height:50vh}}.ar-hint{transition:all .3s ease}.ar-hint.stabilizing{color:#f59e0b}.ar-hint.countdown{color:#3b82f6;font-weight:600}.ar-hint.handoff{color:#10b981}.ar-container.stabilizing{position:relative}.ar-container.stabilizing:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,transparent,#f59e0b,transparent);background-size:200% 100%;animation:scanning 2s infinite;z-index:5}.ar-container.countdown{position:relative}.ar-container.countdown:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#3b82f6,#06b6d4);z-index:5}.ar-container.handoff{position:relative}.ar-container.handoff:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#10b981,#06b6d4);animation:pulse-bar 1.5s infinite;z-index:5}.stability-indicator{position:absolute;top:20px;left:20px;display:flex;align-items:center;gap:8px;padding:8px 12px;background:#000000b3;border-radius:20px;color:#fff;font-size:14px;font-weight:500;z-index:10;transition:all .3s ease}.stability-indicator.hidden{opacity:0;transform:translateY(-10px)}.stability-dot{width:8px;height:8px;border-radius:50%;background:#f59e0b;transition:background-color .3s ease}.stability-indicator.stable .stability-dot{background:#10b981}.stability-indicator.unstable .stability-dot{background:#f59e0b;animation:pulse-dot 1s infinite}.handoff-progress{position:absolute;bottom:60px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:12px;padding:12px 20px;background:#000c;border-radius:24px;color:#fff;font-size:14px;font-weight:500;z-index:10;opacity:0;transition:opacity .3s ease}.handoff-progress.visible{opacity:1}.handoff-progress .progress-spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top:2px solid white;border-radius:50%;animation:spin 1s linear infinite}.ar-hint.enhanced{background:#000c;padding:12px 20px;border-radius:24px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1);font-weight:500}@keyframes scanning{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes pulse-bar{0%,to{opacity:1}50%{opacity:.6}}@keyframes pulse-dot{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.2);opacity:.7}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.ar-container.transition-enter{animation:fadeIn .3s ease forwards}.ar-container.transition-exit{animation:fadeOut .3s ease forwards}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@media (prefers-reduced-motion: reduce){.ar-container:before,.stability-dot,.progress-spinner,.ar-hint{animation:none!important;transition:none!important}.ar-container.transition-enter,.ar-container.transition-exit{animation:none!important}}@media (prefers-contrast: high){.stability-indicator,.handoff-progress,.ar-hint.enhanced{background:#000;border:2px solid white}}