:root{--ink: #0f172a;--line: #e2e8f0;--muted: #64748b}*{box-sizing:border-box}body{margin:0;font-family:Nunito,system-ui,-apple-system,sans-serif;color:var(--ink);background:#f8fafc}.app{display:grid;grid-template-columns:360px 1fr;min-height:100vh}.controls{padding:24px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:16px;overflow-y:auto}.controls h1{margin:0 0 8px;font-size:18px;font-weight:800}.controls label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}.controls select,.controls input,.controls textarea{font-family:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;color:var(--ink);resize:vertical}.controls button{font-family:inherit;font-weight:700;padding:10px 14px;background:#1b9dcb;color:#fff;border:none;border-radius:8px;cursor:pointer}.controls button:hover{background:#178ab8}.controls button.ghost{background:#fff;color:#1b9dcb;border:1px solid #1B9DCB}.template-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}.template-grid button{font-size:11px;padding:6px 4px;background:#f1f5f9;color:var(--ink);border:1px solid var(--line)}.template-grid button.active{background:#1b9dcb;color:#fff;border-color:#1b9dcb}.canvas{display:flex;align-items:center;justify-content:center;padding:40px}.canvas svg{width:min(720px,calc(100vh - 80px));height:auto;display:block;box-shadow:0 8px 32px #0f172a1f;border-radius:4px}.hint{font-size:12px;color:var(--muted);line-height:1.5}.watermark-section{display:flex;flex-direction:column;gap:12px;padding:14px;background:#f8fafc;border:1px solid var(--line);border-radius:10px}.watermark-header{display:flex;align-items:center;justify-content:space-between;font-size:13px;font-weight:700;color:var(--ink)}button.link{background:none;border:none;color:#1b9dcb;font-size:12px;font-weight:600;cursor:pointer;padding:4px 6px}button.link:hover{background:#e0f2fe;border-radius:6px}.watermark-section input[type=range]{width:100%;padding:0;accent-color:#1B9DCB}.section-label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}.preset-row{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}.preset-row button{font-size:18px;padding:8px 4px;background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:8px;cursor:pointer;font-family:inherit}.preset-row button:hover:not(:disabled){background:#e0f2fe;border-color:#1b9dcb}.preset-row button:disabled{opacity:.4;cursor:not-allowed}.toggle{flex-direction:row!important;align-items:center;gap:4px!important;font-size:12px!important;color:var(--muted);font-weight:600}.toggle input{margin:0;accent-color:#1B9DCB}