:root{color-scheme:dark;--bg:#080e11;--panel:#0d161b;--line:#253037;--text:#e8edee;--muted:#99a9b1;--accent:#73e5c5;--mono:ui-monospace,SFMono-Regular,Consolas,monospace;--sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14px;line-height:1.6}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:4px}h1,h2,h3,p{margin:0}button{color:inherit}button,select,input,textarea{border:1px solid 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#27413f;border-radius:50%;inset:0;transform:rotate(-30deg)}.orbit-two{inset:40px -10px;transform:rotate(45deg);border-style:dashed;border-color:#284140}.orbit-three{inset:-10px 40px;transform:rotate(45deg);border-color:#315348}.orbit-center{position:absolute;inset:73px;display:flex;align-items:center;justify-content:center;flex-direction:column;background:radial-gradient(#153c33,transparent 70%);font:70px var(--sans);color:var(--accent)}.orbit-center small{font:8px/1.8 var(--mono);letter-spacing:2px;text-align:center;color:#a7c8bd}.orbit-node{position:absolute;width:32px;height:32px;display:grid;place-items:center;background:#0a1819;border:1px solid #50766d;border-radius:50%;font:9px var(--mono);color:var(--accent)}.n1{left:28px;top:28px}.n2{right:-11px;top:164px}.n3{left:33px;bottom:24px}.diagram-caption{position:absolute;bottom:-32px;left:0;right:0;text-align:center;font:8px var(--mono);letter-spacing:1.4px;color:#8da39c}.welcome-strip{display:flex;align-items:center;gap:24px;border:1px solid var(--line);border-radius:9px;background:linear-gradient(90deg,#10211f,#0c1519);padding:19px 22px;margin:0 0 44px}.welcome-strip p{font-size:12px;color:#c9d6d5;flex:1}.small-badge{font:8px var(--mono);letter-spacing:1px;color:var(--accent);border:1px solid #365249;border-radius:4px;padding:5px 8px;white-space:nowrap}.workspace{display:grid;grid-template-columns:170px minmax(0,1fr) 240px;gap:32px;align-items:start}.left-rail{position:sticky;top:24px}.rail-title{font:9px var(--mono);letter-spacing:1.7px;color:var(--muted);margin:4px 0 18px}#rooms{display:grid;gap:6px}.room-button{border:1px solid transparent;display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:11px 9px;font-size:12px;color:#a6b7bf}.room-button.active{color:var(--accent);background:#12251f;border-color:#28493e}.room-button .room-mark{font:15px var(--mono);width:17px}.room-button 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