:root{color-scheme:light dark;--bg: #f5f8fc;--surface: #ffffff;--text: #14202e;--muted: #4a5868;--border: #9aa8b8;--accent: #0b5cad;--accent-text: #ffffff;--error: #b3261e;--radius: 14px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.4}@media(prefers-color-scheme:dark){:root{--bg: #0f1720;--surface: #1a2430;--text: #e8eef5;--muted: #a7b4c2;--border: #5b6b7d;--accent: #6cb2ff;--accent-text: #0f1720;--error: #ffb4ab}}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--text)}button{min-width:3rem;min-height:3rem;padding:0 1rem;border:0;border-radius:var(--radius);background:var(--accent);color:var(--accent-text);font:inherit;font-weight:600;cursor:pointer;touch-action:manipulation}button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}dialog{width:calc(100% - 2rem);max-width:28rem;max-height:calc(100dvh - 2rem);padding:0;border:0;border-radius:var(--radius);background:var(--surface);color:var(--text);font-size:1.125rem;text-align:left}dialog::backdrop{background:#0000008c}dialog .panel{padding:1.5rem 1.25rem 1.25rem}dialog h2{margin:0;font-size:1.375rem}dialog h2+p{margin:.5rem 0 0}dialog .done{width:100%;margin-top:1.25rem;font-size:1.125rem}@media(pointer:coarse){body:has(input:focus) app-install-help{display:none}}