:root{--primary:#334155;--text:#1f2937;--muted:#4b5563;--line:#d1d5db;--surface:#fff;--background:#f3f4f6;--radius:10px;color:var(--text);background:var(--background);-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,sans-serif;font-size:16px;line-height:1.7}*,:before,:after{box-sizing:border-box}body{margin:0}.frame{min-height:100dvh}.frame-header{align-items:center;gap:12px;max-width:40rem;margin:0 auto;padding:12px 16px 0;display:flex}.logo{width:auto;max-height:40px}.frame-main{max-width:40rem;margin:0 auto;padding:16px 16px 48px}h1{margin:8px 0 16px;font-size:1.35rem;line-height:1.5}h1:focus{outline:none}h1:focus-visible{outline:2px solid var(--primary);outline-offset:4px}.body{white-space:pre-wrap;overflow-wrap:anywhere;margin:0 0 16px}.help,figcaption{color:var(--muted);margin:0 0 16px;font-size:.9rem}.url{font-family:ui-monospace,monospace;font-size:.9rem}.visually-hidden{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.progress{flex:1;align-items:center;gap:8px;display:flex}.progress-track{background:var(--line);border-radius:999px;flex:1;height:8px;overflow:hidden}.progress-bar{background:var(--primary);height:100%}.progress-text{color:var(--muted);text-align:right;min-width:3em;font-size:.85rem}.choices{gap:10px;margin:0 0 24px;display:grid}.choice{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;align-items:center;gap:12px;min-height:48px;padding:10px 14px;display:flex}.choice:has(input:checked){border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}.choice input{width:20px;height:20px;accent-color:var(--primary);margin:0}.figure{margin:0 0 16px}.figure img,.result-image{border-radius:var(--radius);max-width:100%;height:auto;margin:0 0 8px;display:block}.video,.embed{border-radius:var(--radius);background:#000;border:0;width:100%;margin:0 0 16px;display:block}iframe.video{aspect-ratio:16/9}.embed{background:var(--surface);height:70dvh;min-height:420px}.transcript{margin:0 0 16px}.transcript summary{cursor:pointer;color:var(--muted)}.notice{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:12px 14px}.actions{gap:12px;margin:8px 0 16px;display:flex}.button-primary,.button-secondary{border-radius:var(--radius);min-height:48px;font:inherit;cursor:pointer;justify-content:center;align-items:center;padding:0 24px;font-weight:600;text-decoration:none;display:inline-flex}.button-primary{background:var(--primary);color:#fff;border:1px solid var(--primary);flex:1}.button-secondary{background:var(--surface);color:var(--text);border:1px solid var(--line)}.button-primary:disabled,.button-secondary:disabled{cursor:default}.button-primary:disabled:not([data-settling]){opacity:.45}.status{text-align:center;color:var(--muted);padding:48px 16px}@media (width>=720px){h1{font-size:1.6rem}}