:root{color-scheme:light;--bg: #0b1220;--card: #0f1a30;--text: #e6edf7;--muted: #a9b4ca;--border: rgba(255, 255, 255, .12);--primary: #4f9cff;--primary2: #2a6bff}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(1000px 600px at 20% 0%,rgba(79,156,255,.25),transparent),var(--bg);color:var(--text)}.app{max-width:1100px;margin:28px auto;padding:0 16px 40px}.header h1{margin:0 0 6px;font-weight:800;letter-spacing:-.02em}.sub{margin:0;color:var(--muted);line-height:1.4}.card{margin-top:18px;background:linear-gradient(180deg,rgba(255,255,255,.04),transparent),var(--card);border:1px solid var(--border);border-radius:14px;padding:16px}.field{display:flex;flex-direction:column;gap:8px;min-width:240px}.grid{display:grid;grid-template-columns:repeat(2,minmax(260px,1fr));gap:12px 18px;margin-top:14px}.hint{font-size:12px;color:var(--muted);margin-top:-2px}.checkbox{flex-direction:row;align-items:center;gap:10px;margin-top:22px;min-width:240px}.actions{display:flex;gap:12px;align-items:center;margin-top:16px}button.primary{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(79,156,255,.55);background:linear-gradient(180deg,var(--primary),var(--primary2));color:#fff;padding:10px 14px;border-radius:10px;font-weight:700;cursor:pointer}button.primary:disabled{opacity:.55;cursor:not-allowed}.download{color:var(--primary);text-decoration:none;border:1px solid rgba(79,156,255,.25);padding:9px 12px;border-radius:10px;font-weight:700;opacity:.6;pointer-events:none}.status{margin-top:12px;color:var(--muted);min-height:18px}.previewHeader{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.note{color:var(--muted);font-size:12px;max-width:480px}.output{margin-top:12px;border-radius:12px;border:1px dashed rgba(255,255,255,.16);background:#0000001a;padding:12px;min-height:260px;overflow:auto}.output svg{width:100%;height:auto;display:block}.footer{margin-top:16px;color:var(--muted);font-size:12px}@media (max-width: 840px){.grid{grid-template-columns:1fr}}