:root{--bg: #fbfbf9;--panel: #ffffff;--ink: #1a1a1a;--muted: #7c8079;--line: #e6e6df;--accent: #1f8f5f;--mono: ui-monospace, SFMono-Regular, Menlo, monospace}*{box-sizing:border-box}body{margin:0;display:grid;grid-template-columns:300px 1fr;height:100vh;font-family:var(--mono);color:var(--ink);background:var(--bg)}#sidebar{border-right:1px solid var(--line);padding:20px 18px;overflow-y:auto;background:var(--panel)}header h1{margin:0;font-size:22px;letter-spacing:.14em;font-weight:600}.tagline{margin:2px 0 18px;font-size:11px;color:var(--muted);letter-spacing:.04em}nav#constructions{display:flex;flex-direction:column;gap:6px}.nav{text-align:left;border:1px solid var(--line);background:transparent;border-radius:7px;padding:10px 11px;cursor:pointer;display:flex;flex-direction:column;gap:3px;font-family:var(--mono);transition:border-color .12s,background .12s}.nav:hover{border-color:var(--accent)}.nav.active{border-color:var(--accent);background:#f2faf5}.nav-title{font-size:13px;font-weight:600}.nav-blurb{font-size:10.5px;color:var(--muted);line-height:1.4}.panel{margin-top:22px}.panel h2{font-size:10px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin:0 0 10px;font-weight:600}.param{display:grid;grid-template-columns:1fr auto;align-items:center;gap:4px 8px;margin-bottom:12px}.param-label{font-size:12px}.param-val{font-size:12px;color:var(--accent);text-align:right}.param input[type=range]{grid-column:1 / -1;width:100%;accent-color:var(--accent)}.toggles{display:flex;flex-direction:column;gap:7px}.toggle{display:flex;align-items:center;gap:8px;font-size:12px;cursor:pointer}.toggle input{accent-color:var(--accent)}.exports{display:flex;gap:8px}.exports button{flex:1;padding:8px;border:1px solid var(--line);background:transparent;border-radius:6px;cursor:pointer;font-family:var(--mono);font-size:12px}.exports button:hover{border-color:var(--accent);color:var(--accent)}.muted{color:var(--muted);font-size:11px}#stage{display:flex;align-items:center;justify-content:center;padding:40px;overflow:hidden}#stage svg{max-width:100%;max-height:100%}