:root{--bg:#0e1522;--panel:#141d2e;--panel2:#1b2740;--line:#2a3a5a;--text:#e8eef9;--muted:#9fb0cc;--accent:#5cd6a0;--accent2:#ffb454;--bad:#ff6b6b;--ok:#4cd98a}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:14px/1.45 Inter,system-ui,Segoe UI,Roboto,sans-serif;overflow:hidden}
body.embed-mode,body{height:100vh;height:100dvh}
.app{display:flex;flex-direction:column;height:100vh;height:100dvh;width:100%}
.stage{position:relative;flex:0 0 60vh;flex-basis:60dvh;min-height:240px;background:#070b13}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}
.panel{flex:1 1 auto;overflow-y:auto;padding:10px 14px 18px;background:var(--panel);border-top:1px solid var(--line);-webkit-overflow-scrolling:touch}
@media(min-width:960px){.app{flex-direction:row}.stage{flex:1 1 auto}.panel{flex:0 0 400px;border-top:0;border-left:1px solid var(--line)}}
.hud{position:absolute;left:8px;top:8px;display:flex;flex-direction:column;gap:2px;pointer-events:none;font:12px/1.35 ui-monospace,Consolas,monospace;background:rgba(7,11,19,.62);padding:6px 9px;border-radius:8px;max-width:calc(100% - 130px)}
.hud b{color:var(--accent)}
.tools{position:absolute;right:8px;top:8px;display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
h1{font-size:16px;margin:0 0 2px}h2{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:14px 0 6px}
.sub{color:var(--muted);font-size:12px;margin:0 0 8px}
.btn,button.btn,a.btn{background:var(--panel2);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:7px 11px;font:inherit;font-size:13px;cursor:pointer;text-decoration:none;display:inline-block}
.btn:hover{border-color:var(--accent)}.btn.on{background:#1f5a44;border-color:var(--accent)}.btn.pri{background:var(--accent);color:#06251a;border-color:var(--accent);font-weight:700}
.btn:focus-visible,input:focus-visible,summary:focus-visible,select:focus-visible,canvas:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}
.row{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0}
.sl{display:grid;grid-template-columns:1fr auto;gap:0 8px;margin:7px 0}
.sl label{font-size:12.5px;color:var(--text)}.sl output{font:12px ui-monospace,Consolas,monospace;color:var(--accent);min-width:64px;text-align:right}
.sl input{grid-column:1/3;width:100%;accent-color:var(--accent);margin:2px 0}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:4px 10px;font-size:12.5px}
.stats div{display:flex;justify-content:space-between;border-bottom:1px dotted var(--line);padding:2px 0}.stats b{font-family:ui-monospace,Consolas,monospace;color:var(--accent)}
canvas.graph{width:100%;height:110px;display:block;background:#0a1020;border:1px solid var(--line);border-radius:8px;margin:4px 0}
.leg{font-size:11.5px;color:var(--muted);margin:0 0 6px}
details{border:1px solid var(--line);border-radius:8px;padding:6px 10px;margin:10px 0;background:#101a2d}
summary{cursor:pointer;font-weight:600}
details p,details li{font-size:12.5px;color:#cbd6ea}details code,.eq{font-family:ui-monospace,Consolas,monospace;color:#ffe6a8;font-size:12.5px}
.chk{display:flex;gap:8px;align-items:baseline;font-size:12.5px;margin:4px 0}.chk i{font-style:normal;font-weight:700;min-width:44px;text-align:center;border-radius:6px;padding:0 6px}
.chk i.ok{background:#164a31;color:var(--ok)}.chk i.bad{background:#5a2020;color:var(--bad)}.chk i.wait{background:#2b3552;color:var(--muted)}
#loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#070b13;color:var(--muted);z-index:5;transition:opacity .4s}
#loading.done{opacity:0;pointer-events:none}
.credit{font-size:11px;color:var(--muted);margin-top:10px}