:root{--bg:#0f1115;--panel:#151920;--line:#242a35;--text:#e6e9ef;--muted:#8a93a3;--accent:#5b9dff}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;display:flex;flex-direction:column}
a{color:var(--accent)}
header{display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid var(--line)}
.logo{font-weight:700;font-size:17px;color:var(--text);text-decoration:none;letter-spacing:.2px}
.logo span{color:var(--accent)}
header nav{margin-left:auto;display:flex;gap:18px;font-size:14px}
header nav a{color:var(--muted);text-decoration:none}
header nav a:hover,header nav a.current{color:var(--text)}
.app{flex:1;display:grid;grid-template-columns:260px 1fr;min-height:0}
aside{border-right:1px solid var(--line);padding:16px;overflow:auto;background:var(--panel)}
aside h2{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}
.models{list-style:none;margin:0 0 22px;padding:0}
.models button{width:100%;text-align:left;background:none;border:1px solid transparent;color:var(--text);padding:7px 10px;border-radius:8px;cursor:pointer;font:inherit}
.models button:hover{background:#1c212a}
.models button.active{border-color:var(--accent);background:#19212f}
.models small{display:block;color:var(--muted);font-size:12px}
.opts label{display:flex;align-items:center;gap:8px;margin:7px 0;color:var(--muted);font-size:14px;cursor:pointer}
.opts .sel{justify-content:space-between}
.opts select{background:#1c212a;color:var(--text);border:1px solid var(--line);border-radius:6px;padding:4px 6px;font:inherit;font-size:13px}
.stage{position:relative;min-height:0}
canvas{width:100%;height:100%;display:block;cursor:grab;touch-action:none}
canvas:active{cursor:grabbing}
.hud,.hint{position:absolute;bottom:14px;font-size:12px;color:var(--muted);pointer-events:none}
.hud{left:16px}
.hint{right:16px}
.nogl{position:absolute;inset:0;display:none;align-items:center;justify-content:center;color:var(--muted);padding:24px;text-align:center}
footer{border-top:1px solid var(--line);padding:10px 20px;font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 18px}
.page{max-width:760px;margin:0 auto;padding:32px 20px 48px;flex:1}
.page h1{font-size:28px;margin:0 0 12px}
.page h2{font-size:18px;margin:28px 0 8px}
.page p,.page li{color:#c9ced8}
.page table{border-collapse:collapse;width:100%;font-size:14px}
.page th,.page td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left}
.page th{color:var(--muted);font-weight:600}
@media (max-width:760px){
  .app{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  aside{border-right:0;border-bottom:1px solid var(--line);max-height:40vh}
  .hint{display:none}
}