:root{--bg: #0b0d12;--ink: #e8ecf3;--dim: #7d8899;--line: #222836;--glass: rgba(14, 17, 24, .82);--phi: #58c4dd;--del: #ffd84d;--H: #83c167;--h: #5cd0b3;--A: #e07ad8;--th: #f0ac5f;--bad: #fc6255;--good: #f4f4f4;--serif: "STIX Two Text", "STIX Two", "Cambria", "Times New Roman", serif;--sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;--gutter-l: max(16px, env(safe-area-inset-left, 0px));--gutter-r: max(16px, env(safe-area-inset-right, 0px));color-scheme:dark}html,body{height:100%}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.45 var(--sans);overflow:hidden}#app{position:fixed;inset:0;display:flex;flex-direction:column}code{font-family:var(--mono);font-size:.9em;color:#c9d4e5}#top{display:flex;align-items:center;gap:18px;padding-block:calc(10px + env(safe-area-inset-top,0px)) 10px;padding-left:var(--gutter-l);padding-right:var(--gutter-r);border-bottom:1px solid var(--line);background:var(--bg);z-index:5;min-width:0}.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;flex:none}.brand-mark{width:34px;height:34px}.brand-text{display:flex;flex-direction:column;line-height:1.15}.brand-title{font-family:var(--serif);font-size:19px;font-weight:600;letter-spacing:.01em}.brand-sub{font-size:11.5px;color:var(--dim)}.brand-sub code{font-size:11px;color:var(--dim)}#chapters{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;min-width:0;flex:1}#chapters::-webkit-scrollbar{display:none}.chap{flex:none;display:flex;align-items:baseline;gap:6px;background:none;border:1px solid transparent;border-radius:999px;color:var(--dim);font:500 13px var(--sans);padding:6px 12px;cursor:pointer}.chap:hover{color:var(--ink)}.chap.on{color:var(--ink);border-color:#3a4357;background:#151a24}.chap-n{font-family:var(--mono);font-size:11px;opacity:.7}.chap:focus-visible,.ctl:focus-visible,.dot:focus-visible,.btn:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--phi);outline-offset:2px}#viewport{position:relative;flex:1;min-height:0;overflow:hidden}#viewport canvas{display:block}.label-layer{position:absolute;inset:0;pointer-events:none}.lbl{font:500 12px var(--sans);color:var(--ink);white-space:nowrap;text-shadow:0 0 6px #000,0 0 2px #000;transition:opacity .2s}.lbl.small{font-size:11.5px;color:#b7c1d1}.lbl.bad{color:var(--bad)}.lbl.sun{color:var(--del);opacity:.9}.lbl.purple{color:#b896cb}.lbl.blue{color:var(--phi)}.lbl.cardinal{font:600 15px var(--serif);color:#c3ccda}.lbl.cardinal.north{color:#fff}.tex-lbl svg.tex{height:1.25em;width:auto;filter:drop-shadow(0 0 3px #000) drop-shadow(0 0 2px #000);color:#fff}.tex-lbl.big svg.tex{height:1.7em}.tex-lbl.chip svg.tex{height:1.15em}.tex-lbl.chip{background:#0b0d12b8;padding:2px 6px;border-radius:6px}.eqs{position:absolute;top:18px;left:var(--gutter-l);z-index:3;display:flex;flex-direction:column;gap:14px;align-items:flex-start;max-width:min(560px,calc(100% - 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