:root{--accent: #c0392b;--ink: #222;--line: #ddd}*{box-sizing:border-box}body{font:15px/1.6 Segoe UI,system-ui,sans-serif;color:var(--ink);background:#fff;max-width:1200px;margin:0 auto;padding:24px 20px 48px}header h1{font-size:22px;margin:0 0 2px}.tagline{margin:0 0 20px;color:#666;font-size:13px}.wrap{display:grid;grid-template-columns:340px 1fr;gap:28px;align-items:start}form{display:flex;flex-direction:column;gap:6px}label{font-size:13px;color:#555;margin-top:8px}textarea,input[type=text],input[type=number],select{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:6px;width:100%;background:#fff;color:var(--ink)}textarea{resize:vertical}textarea:focus,input:focus,select:focus{outline:2px solid color-mix(in srgb,var(--accent) 35%,white);border-color:var(--accent)}.radios{display:flex;gap:14px}.radios label{display:flex;align-items:center;gap:4px;color:var(--ink)}details{border:1px solid var(--line);border-radius:6px;padding:8px 12px;margin-top:10px}summary{cursor:pointer;font-size:13px;color:#555}.status{font-size:13px;color:#666;min-height:1.6em;margin:10px 0 4px}#download{font:inherit;background:var(--accent);color:#fff;border:none;border-radius:6px;padding:10px 18px;cursor:pointer}#download:hover{filter:brightness(1.08)}#download:disabled{opacity:.6;cursor:wait}.preview-pane{min-width:0}#preview{aspect-ratio:595 / 842;width:100%;border:1px solid var(--line);background:#fff;border-radius:4px}@media(max-width:900px){.wrap{grid-template-columns:1fr}}.site-footer{margin-top:18px;font-size:12px;color:#999;text-align:center}.site-footer a{color:#999;text-decoration:none}.site-footer a:hover{color:var(--accent)}