:root{
  --paper:#EFE7D2; --ink:#30231E; --ink-2:#857A6A; --rule:#D8CDB4;
  --face:#F5F1EA; --grid:#DDD2B8;
  --red:#C2261C; --rose:#B0685F;
  --hl-bg:#F2D489; --hl-fg:#30231E;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --serif:'Young Serif',Georgia,'Times New Roman',serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#12100D; --ink:#F5F1EA; --ink-2:#A89E8E; --rule:#3A352C;
    --face:#1E1B16; --grid:#292520;
    --red:#FF6B5B; --rose:#E4B0AB;
    --hl-bg:#55471E; --hl-fg:#F5F1EA;
  }
}
:root[data-theme="dark"]{
  --paper:#12100D; --ink:#F5F1EA; --ink-2:#A89E8E; --rule:#3A352C;
  --face:#1E1B16; --grid:#292520;
  --red:#FF6B5B; --rose:#E4B0AB;
  --hl-bg:#55471E; --hl-fg:#F5F1EA;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font-family:var(--mono);font-size:13px;line-height:1.55;min-height:100vh;overflow-x:hidden}
.wrap{max-width:960px;margin:0 auto;padding:0 20px 8px}
#top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:20px 0 14px;border-bottom:1px solid var(--rule)}
#brand{display:flex;align-items:baseline;gap:10px;min-width:0;white-space:nowrap;overflow:hidden}
#brand .bt{font-family:var(--serif);font-size:16.5px;color:var(--ink)}
#brand .bs{font-size:11px;color:var(--ink-2)}
#controls{display:flex;gap:8px;align-items:center}
button.ctl{font:inherit;font-size:12px;background:var(--paper);color:var(--ink);border:1.2px solid var(--ink);border-radius:7px;padding:5px 12px;cursor:pointer;white-space:nowrap}
button.ctl:hover{background:var(--face)}
button.ctl:active{transform:translateY(1px)}
button.ctl:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
button.ctl.primary{background:var(--ink);color:var(--paper)}
button.ctl.primary:hover{opacity:.9}
button.ctl:disabled{opacity:.35;cursor:default}
#vizrow{display:flex;flex-direction:column;gap:13px;padding:16px 0 18px;border-bottom:1px solid var(--rule)}
.vgroup{display:flex;align-items:center;gap:16px}
.vchips{display:flex;flex-wrap:wrap;gap:8px}
.nvg{font-family:var(--serif);font-size:11px;color:var(--ink-2);letter-spacing:.04em;flex:none;width:82px;text-align:right}
.nv{display:inline-flex;gap:7px;align-items:center;font-family:var(--serif);font-size:13px;color:var(--ink);padding:4px 10px;border:1.2px solid transparent;border-radius:8px;background:none;cursor:pointer;text-decoration:none}
.nv:hover{background:var(--face)}
.nv.on{background:var(--face);border-color:var(--ink)}
.nv.soon{color:var(--ink-2);cursor:default}
.nv.soon:hover{background:none}
.nv .tag{font-family:var(--mono);font-size:9px;letter-spacing:.06em;color:var(--ink-2);border:1px solid var(--rule);border-radius:5px;padding:1px 5px}
.nv svg{flex:none}
#foot{margin-top:26px;padding:12px 0 44px;font-size:10.5px;color:var(--ink-2);border-top:1px solid var(--rule)}
#foot code{font-size:10px}
/* the figure runs full viewport width, borderless; the content-width rules
   above (under the chip row) and below (over the story) frame it instead */
#canvasWrap{position:relative;background:var(--paper);height:clamp(320px,min(70vh,100vh - 430px),860px);overflow:hidden;margin:0;width:100vw;left:50%;margin-left:-50vw}
#svg{width:100%;height:100%;display:block;cursor:grab;touch-action:none}
#svg.dragging{cursor:grabbing}
#zoom{position:absolute;right:max(16px,calc((100vw - 920px)/2));top:12px;display:flex;flex-direction:column;gap:6px}
#zoom button{width:26px;height:24px;font:inherit;font-size:13px;background:var(--paper);border:1.2px solid var(--ink);border-radius:6px;color:var(--ink);cursor:pointer}
#zoom button:hover{background:var(--face)}
#rail{position:absolute;left:max(16px,calc((100vw - 920px)/2));top:14px;display:flex;align-items:center;gap:7px;flex-wrap:wrap;max-width:calc(100% - 70px)}
#rail .ch{width:10px;height:10px;border-radius:50%;border:1.2px solid var(--ink);background:transparent;padding:0;cursor:pointer;flex:none}
#rail .ch.done{background:var(--ink)}
#rail .ch.on{background:var(--red);border-color:var(--red);transform:scale(1.3)}
#rail .ch:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
#rail .title{font-family:var(--serif);font-size:13px;color:var(--ink-2);margin-left:8px}
#tip{position:absolute;pointer-events:none;background:var(--ink);color:var(--paper);font-size:11px;padding:4px 9px;border-radius:6px;max-width:280px;line-height:1.35;display:none;z-index:5}
#panel{padding-top:2px}
#body{min-height:230px;max-width:66ch}
.eyebrow{font-size:10.5px;letter-spacing:.04em;color:var(--ink-2)}
h1.t{font-family:var(--serif);font-size:21px;font-weight:400;line-height:1.25;margin:4px 0 10px;text-wrap:balance}
.lede{font-size:14.5px;line-height:1.5;margin:0 0 12px;max-width:56ch}
.sub{color:var(--ink-2);font-size:11px;margin:0 0 14px}
#body p{margin:0 0 12px;max-width:62ch}
mark{background:var(--hl-bg);color:var(--hl-fg);padding:0 3px;border-radius:3px}
code{background:var(--face);border:1px solid var(--rule);border-radius:4px;padding:0 3px;font-size:12px}
pre{background:var(--face);border:1px solid var(--rule);border-radius:7px;padding:10px 12px;font-size:11.5px;line-height:1.5;overflow-x:auto;margin:0 0 14px;white-space:pre}
.actions{display:flex;gap:8px;margin:16px 0 0;flex-wrap:wrap}
details{border-top:1px solid var(--rule);margin:12px 0 0;padding:8px 0 0;max-width:62ch}
details summary{cursor:pointer;font-size:11.5px;color:var(--ink-2);list-style:none;display:flex;gap:8px;align-items:center}
details summary::before{content:'+';display:inline-block;width:12px;color:var(--ink)}
details[open] summary::before{content:'−'}
details summary::-webkit-details-marker{display:none}
details > *:not(summary){margin-top:8px}
#legend{position:absolute;left:max(16px,calc((100vw - 920px)/2));bottom:12px;display:flex;gap:18px;align-items:center;font-family:var(--serif);font-size:12.5px;color:var(--ink);pointer-events:none}
#legend .li{display:flex;gap:7px;align-items:center}
#legend svg{display:block}
/* ---- embed mode (?embed): bare widget for iframes ---- */
body.embed{overflow:hidden}
body.embed .wrap{max-width:none;padding:0}
body.embed #top,body.embed #panel,body.embed #zoom,body.embed #vizrow,body.embed #foot{display:none}
body.embed #canvasWrap{height:100vh;margin:0;width:auto;left:auto}
#cap{position:absolute;left:max(16px,calc((100vw - 920px)/2));top:38px;display:none;font-size:12px;color:var(--ink-2);max-width:min(62%,48ch);line-height:1.45}
body.embed #cap{display:block}
#econtrols{position:absolute;right:12px;top:12px;display:none;gap:6px}
body.embed #econtrols{display:flex}
#econtrols .ctl{padding:3px 9px;font-size:12px;text-decoration:none;line-height:1.5}
@keyframes halo{0%{opacity:.9}50%{opacity:.25}100%{opacity:.9}}
.halo{animation:halo 1.6s ease-in-out infinite}
@media (prefers-reduced-motion: reduce){.halo{animation:none}}
@media (max-width:640px){
  #brand .bs{display:none}
  #controls{gap:5px}
  button.ctl{padding:4px 8px;font-size:11px}
  #canvasWrap{height:clamp(300px,min(54vh,100vh - 360px),520px)}
}
a.bt{text-decoration:none}
a.bt:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
/* ---- the terminal (Human++ palette; deliberately dark in both themes) ---- */
#term{margin:18px 0 24px;border:1px solid #3E3E3C;border-radius:10px;background:#292929;font-size:12.5px;overflow:hidden}
#tbar{display:flex;align-items:center;gap:7px;padding:9px 13px 4px;background:#292929}
#tbar .td{width:10px;height:10px;border-radius:50%;flex:none}
#tbar .tt{margin-left:6px;font-size:10.5px;letter-spacing:.05em;color:#7A7466}
#tbar .tgo{margin-left:auto;font-size:10.5px}
#tlog{min-height:138px;max-height:240px;overflow-y:auto;padding:11px 15px 3px;white-space:pre-wrap;line-height:1.55}
#tlog::-webkit-scrollbar{width:8px}
#tlog::-webkit-scrollbar-thumb{background:#454542;border-radius:4px}
#term ::selection{background:#454542;color:#F0EBDF}
.tk-p{color:#7A7466}
.tk-g{color:#1ad0d6}
.tk-w{color:#F5F1EA}
.tk-f{color:#f2a633}
.tk-s{color:#04b372}
.tk-o{color:#CFC8B8}
.tk-c{color:#7A7466;font-style:italic}
.tk-e{color:#e7349c}
#tline{display:flex;gap:9px;padding:4px 15px 12px;align-items:center;background:#292929}
#tline .tp{color:#04b372}
#tin{flex:1;background:none;border:none;outline:none;font:inherit;font-size:12.5px;color:#F5F1EA;caret-color:#f2a633;min-width:0}
#tin::placeholder{color:#7A7466}
body.embed #term{display:none}
.tgo{color:#5e84b6;text-decoration:none;font-size:12px}
.tgo:hover{color:#458ae2;text-decoration:underline;text-underline-offset:3px}
#tshare{margin-left:auto;flex:none;background:#232322;color:#CFC8B8;border:1px solid #454542;border-radius:6px}
#tshare:hover{background:#3A3A38;color:#F5F1EA}
.tk-cur{color:#f2a633;animation:tblink 1s steps(2) infinite}
@keyframes tblink{50%{opacity:0}}
@media (prefers-reduced-motion: reduce){.tk-cur{animation:none}}
.meter{width:190px;height:8px;border:1.2px solid var(--ink);border-radius:5px;background:var(--paper);overflow:hidden;cursor:pointer}
.meter span{display:block;height:100%;background:var(--red)}
#foot a{color:var(--ink-2)}