:root{color:#172033;background:#f4f6fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px}button,textarea,select,input{font:inherit}.demo-shell{min-height:100vh;padding:28px}.demo-intro{display:flex;align-items:end;justify-content:space-between;gap:24px;max-width:1220px;margin:0 auto 24px}.demo-intro h1{margin:0;font-size:clamp(2.2rem,6vw,4.6rem);line-height:.95;letter-spacing:0}.demo-intro p{max-width:680px;margin:14px 0 0;color:#596377;font-size:1.05rem}.demo-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.demo-tabs{display:flex;gap:8px;max-width:1220px;margin:0 auto 18px}.tab-button{min-height:42px;padding:0 16px;border:1px solid #cfd6e5;border-radius:8px;background:#fff;color:#596377;cursor:pointer;font-weight:800}.tab-button:hover{border-color:#8a96ad}.tab-button.is-active{border-color:#172033;background:#172033;color:#fff}.button{border:1px solid #cfd6e5;border-radius:8px;background:#fff;color:#172033;cursor:pointer;min-height:42px;padding:0 16px;font-weight:700}.button:hover{border-color:#8a96ad}.button-primary{background:#2563eb;border-color:#2563eb;color:#fff}.workspace{display:grid;grid-template-columns:minmax(340px,.92fr) minmax(440px,1.08fr);gap:18px;max-width:1220px;margin:0 auto;align-items:stretch}.demo-view[hidden]{display:none}.editor-panel,.preview-panel{min-height:680px;border:1px solid #d9dde7;border-radius:8px;background:#fff;overflow:hidden}.viewer-layout{max-width:1220px;margin:0 auto}.viewer-summary{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:16px}.viewer-summary h2{margin:0;font-size:clamp(1.65rem,4vw,2.6rem);line-height:1;letter-spacing:0}.viewer-summary p{max-width:720px;margin:10px 0 0;color:#596377}.viewer-metrics{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.viewer-metrics span{min-height:34px;display:inline-flex;align-items:center;padding:0 12px;border:1px solid #d9dde7;border-radius:8px;background:#fff;color:#596377;font-size:.82rem;font-weight:800}.viewer-stage{min-height:660px;padding:16px;border:1px solid #d9dde7;border-radius:8px;background:linear-gradient(90deg,rgba(37,99,235,.05) 1px,transparent 1px),linear-gradient(rgba(37,99,235,.05) 1px,transparent 1px),#f8fafc;background-size:28px 28px;overflow:auto}.panel-header{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px;padding:0 16px;border-bottom:1px solid #d9dde7}.panel-header h2{margin:0;font-size:.95rem}.panel-header span{color:#687083;font-size:.82rem;font-weight:700}.panel-header span[data-state=ok]{color:#166534}.panel-header span[data-state=error]{color:#b42318}textarea{display:block;width:100%;height:540px;padding:16px;border:0;border-bottom:1px solid #d9dde7;outline:none;resize:vertical;color:#172033;background:#fbfcff;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.9rem;line-height:1.6}.controls{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;padding:14px 16px;align-items:end}.controls label{display:grid;gap:6px;color:#687083;font-size:.78rem;font-weight:700}select{height:40px;border:1px solid #cfd6e5;border-radius:8px;background:#fff;color:#172033;padding:0 10px}input[type=range]{accent-color:#2563eb}.checkbox-row{display:flex!important;align-items:center;gap:8px!important;min-height:40px}.preview-stage{min-height:620px;padding:16px;background:linear-gradient(90deg,rgba(37,99,235,.05) 1px,transparent 1px),linear-gradient(rgba(37,99,235,.05) 1px,transparent 1px),#f8fafc;background-size:28px 28px;overflow:auto}.error-box{margin:0;padding:16px;border:1px solid #f4b5ae;border-radius:8px;background:#fff2f0;color:#b42318;white-space:pre-wrap}@media(max-width:900px){.demo-shell{padding:18px}.demo-intro{display:grid}.demo-actions{justify-content:start}.workspace{grid-template-columns:1fr}.viewer-summary{display:grid}.viewer-metrics{justify-content:start}.editor-panel,.preview-panel{min-height:auto}textarea{height:420px}}@media(max-width:620px){.controls{grid-template-columns:1fr}}