:root{--bg: #14141b;--panel: #1e1e28;--fg: #e8e8f0;--muted: #9a9ab0;--accent: #6ee7a8;--error: #ff8b8b}*{box-sizing:border-box}body{margin:0;padding:2rem 1rem 4rem;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,Segoe UI,sans-serif}main{max-width:680px;margin:0 auto}h1{margin:0 0 .25rem;font-size:1.6rem}h2{font-size:1rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.sub{margin:0 0 1.5rem;color:var(--muted)}.screen{position:relative;line-height:0}canvas{width:100%;height:auto;aspect-ratio:2 / 1;background:#000;border-radius:6px;image-rendering:pixelated;outline:none}canvas:focus{box-shadow:0 0 0 2px var(--accent)}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;border:0;border-radius:6px;background:#000000b8;color:var(--fg);font:inherit;cursor:pointer}.overlay:disabled{cursor:progress;color:var(--muted)}.controls{display:flex;flex-wrap:wrap;gap:1rem;margin:1.25rem 0 .5rem}label{display:flex;flex-direction:column;gap:.35rem;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}select,input[type=file]{padding:.5rem;background:var(--panel);color:var(--fg);border:1px solid #33334a;border-radius:4px;font:14px/1 inherit}.status{min-height:1.6em;margin:.25rem 0 2rem;color:var(--accent)}.status.error{color:var(--error)}.keypads{display:flex;align-items:center;gap:1.25rem;flex-wrap:wrap}.arrow{color:var(--muted);font-size:1.5rem}table{border-collapse:collapse}caption{padding-bottom:.4rem;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}td{width:2.2rem;height:2.2rem;text-align:center;background:var(--panel);border:1px solid #33334a;border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.note{color:var(--muted);font-size:.9rem}.help h3{margin:1.75rem 0 .5rem;font-size:.95rem;color:var(--fg)}kbd{display:inline-block;min-width:1.6rem;padding:.1rem .35rem;background:var(--panel);border:1px solid #33334a;border-bottom-width:2px;border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em;text-align:center}.credits{margin-top:2.5rem}.credits ul{margin:0;padding-left:1.1rem}.credits li{margin-bottom:.5rem;color:var(--muted)}.credits a{color:var(--accent)}.credits a:hover{text-decoration:none}.credits code{padding:.1rem .3rem;background:var(--panel);border:1px solid #33334a;border-radius:3px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em}