:root{--bg:#f2f2f7;--bg-elevated:#fff;--bg-secondary:#f9f9fb;--text:#111827;--muted:#6b7280;--muted-strong:#4b5563;--border:#3c3c432e;--separator:#3c3c431f;--blue:#007aff;--blue-dark:#0062cc;--green:#34c759;--orange:#ff9f0a;--red:#ff3b30;--shadow:0 18px 44px #1118271a;--inner-shadow:inset 0 1px 0 #ffffffc2;color:var(--text);background:var(--bg);font-synthesis:none;letter-spacing:0;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}body{background:linear-gradient(180deg, #fbfbfd 0, #f2f2f7 280px), var(--bg);min-width:320px;margin:0}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{border:0}a{color:inherit}img{max-width:100%;display:block}#root{min-height:100svh}.app-shell{width:min(1180px,100%);min-height:100svh;padding:18px max(18px, env(safe-area-inset-left)) 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var(--separator);color:var(--blue);background:#ffffffdb}.spin{animation:1s linear infinite spin}.result-band,.faq-band{margin-top:18px;padding:16px}.result-preview{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;display:grid}.result-preview img{border:1px solid var(--separator);object-fit:contain;background:#fff;border-radius:8px;width:min(520px,100%);max-height:440px}.result-actions{justify-items:end;gap:10px;display:grid}.result-actions span{color:var(--muted);font-weight:720}.faq-band{background:0 0}.faq-band h2{margin-bottom:12px;font-size:1.08rem;font-weight:780}.faq-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.faq-grid article{border:1px solid var(--border);min-height:138px;box-shadow:var(--inner-shadow);background:#ffffffe6;border-radius:8px;padding:14px}.faq-grid h3{color:var(--text);margin-bottom:8px;font-size:.98rem;font-weight:760}.faq-grid p{color:var(--muted-strong);font-size:.92rem}.ad-slot{border:1px solid 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0, #000 280px), var(--bg)}.topbar,.language-control,.tool-surface,.settings-panel,.result-band,.faq-grid article,.quick-stats{background:#1c1c1ee0}.upload-zone{background:linear-gradient(#2c2c2eeb,#1c1c1eeb),repeating-linear-gradient(90deg,#007aff1f 0 16px,#0000 16px 32px)}.frame-card,.empty-state,.result-placeholder,.status-box,.input-with-unit{background:var(--bg-secondary)}.segmented-control{background:#1c1c1e}.segmented-control button.active,.secondary-action,.frame-actions button{color:#fff;background:#3a3a3c}}@media (width<=860px){.app-shell{padding:14px max(14px, env(safe-area-inset-left)) 14px}.intro-band,.workspace-grid,.result-preview,.faq-grid{grid-template-columns:1fr}.quick-stats{text-align:left;width:100%}.settings-panel{position:static}.result-actions{justify-items:stretch}}@media (width<=560px){.topbar,.site-footer{flex-direction:column;align-items:stretch}h1{font-size:2rem}.field-row,.action-row{grid-template-columns:1fr}.frame-card{grid-template-columns:58px minmax(0,1fr)}.frame-card img{width:58px;height:58px}.frame-actions{grid-column:1/-1;justify-content:flex-end}.upload-zone{padding:18px 12px}}