:root{--bg: #faf7f2;--card: #ffffff;--ink: #2c2a28;--muted: #7a736c;--accent: #e07a5f;--accent-dark: #c25e44;--border: #ece5dc}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif;line-height:1.5}.container{max-width:560px;margin:0 auto;padding:24px 16px 48px}.header{text-align:center;margin-bottom:24px}.header h1{font-size:40px;margin:0}.subtitle{color:var(--muted);margin:6px 0 0}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;margin-bottom:20px;box-shadow:0 2px 10px #00000008}.card h2{margin:0 0 6px;font-size:20px}.hint{color:var(--muted);margin:0 0 14px;font-size:15px}input[type=file],textarea{width:100%;font-size:16px;font-family:inherit}textarea{border:1px solid var(--border);border-radius:10px;padding:10px;resize:vertical;margin-bottom:12px}.presets{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.preset{border:1px solid var(--border);background:#fff;color:var(--ink);border-radius:999px;padding:8px 14px;font-size:15px;cursor:pointer}.preset.active{border-color:var(--accent);background:#fbeee9;color:var(--accent-dark)}.primary{width:100%;border:none;background:var(--accent);color:#fff;border-radius:12px;padding:14px;font-size:17px;font-weight:600;cursor:pointer}.primary:hover:not(:disabled){background:var(--accent-dark)}.primary:disabled{opacity:.6;cursor:default}.result{margin-top:16px;text-align:center}.result img{max-width:100%;border-radius:12px}.result.text{text-align:left;white-space:pre-wrap;background:#faf7f2;border-radius:10px;padding:14px}.download{display:inline-block;margin-top:10px;color:var(--accent-dark);font-weight:600}.error{background:#fdecea;color:#b3261e;border-radius:10px;padding:12px 14px;margin-bottom:16px}.footer{text-align:center;color:var(--muted);font-size:13px;margin-top:24px}