:root{
  --blue:#0F52BA; --blue-d:#0B3F91;
  --ground:#E6DECD; --paper:#FBF7EC; --tint:#F2EBDB; --on-dark:#FBF7EC;
  --ink:#1D1A15; --ink-2:#4A443A; --ink-3:#655D51;
  --rule-2:#CBC1AD; --rule-3:#E4DBC9; --ref:#A34A12; --alert:#B8241A;
  --serif:"STIX Two Text",Georgia,"Times New Roman",serif;
  --mono:"Courier Prime","Courier New",Courier,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background-color:var(--ground);background-image:url(/images/paper-ground.png);color:var(--ink);font-family:var(--serif);font-size:19px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:var(--blue);color:var(--on-dark)}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
a{color:var(--blue);text-underline-offset:.16em;text-decoration-thickness:1px}
a:hover{color:var(--blue-d)}
p{margin:0 0 14px}
h1,h2,h3{margin:0;font-weight:400}

/* ---------- frame: recycled-paper ground, rail, paper sheet ---------- */
.shell{display:grid;grid-template-columns:268px minmax(0,1fr);max-width:1440px;margin:0 auto}
.rail{position:sticky;top:0;align-self:start;height:100vh;padding:40px 20px 40px 40px;color:var(--on-dark);
  font-family:var(--mono);font-size:13px;letter-spacing:.09em;text-transform:uppercase;display:flex;flex-direction:column}
.rail .brand{font-weight:700;color:var(--on-dark);text-decoration:none;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.45);margin-bottom:22px}
.rail nav{display:flex;flex-direction:column;gap:2px}
.rail nav a{color:var(--on-dark);text-decoration:none;padding:5px 8px;margin-left:-8px}
.rail nav a:hover{background:rgba(255,255,255,.16)}
.rail nav a[aria-current="true"]{background:var(--paper);color:var(--blue)}
.rail .sep{border-top:1px solid rgba(255,255,255,.45);margin:22px 0 16px}
.rail .cta{display:block;border:1px solid var(--ink);color:var(--on-dark);text-decoration:none;font-weight:700;padding:10px 12px;margin-bottom:8px}
.rail .cta:hover{background:var(--paper);color:var(--blue)}
.rail .tiny{margin-top:auto;font-size:11.5px;letter-spacing:.06em;opacity:.9;text-transform:none;line-height:1.5}
.sheet{background:var(--paper);margin:40px 40px 40px 20px;padding:36px clamp(22px,5vw,76px) 64px;min-width:0}

/* ---------- man-page sections ---------- */
.sec{margin-top:54px;scroll-margin-top:24px}
.sec:first-of-type{margin-top:0}
.lab{font-family:var(--serif);font-weight:700;font-size:15px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px}
.in{padding-left:clamp(0px,5vw,72px);max-width:880px}
.wide{padding-left:clamp(0px,5vw,72px)}
.name{font-size:clamp(34px,4.6vw,58px);line-height:1.1;letter-spacing:-.012em;max-width:24ch;text-wrap:balance}
.name b{font-weight:700}
.leadp{font-size:21px;color:var(--ink-2);max-width:56ch;margin-top:18px}
  font-family:var(--mono);font-weight:700;font-size:13px;letter-spacing:.14em;text-align:center;padding:8px 14px;line-height:1.5}
pre,code,.mono{font-family:var(--mono)}
body{font-variant-ligatures:none}
pre{margin:0;font-size:15.5px;line-height:1.5;white-space:pre;overflow-x:auto}
code{font-size:.9em}
.note{font-family:var(--mono);font-size:13.5px;line-height:1.55;color:var(--ink-2);margin-top:12px;max-width:74ch}
.btnrow{display:flex;gap:14px;flex-wrap:wrap;margin:22px 0 4px}
.btn{font-family:var(--mono);font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;text-decoration:none;
  color:var(--ink);background:var(--paper);border:1px solid var(--ink);padding:13px 22px;cursor:pointer;display:inline-block}
.btn:hover{background:var(--ink);color:var(--on-dark)}
.btn.pri{background:var(--blue);border-color:var(--blue);color:var(--on-dark)}
.btn.pri:hover{background:var(--blue-d);border-color:var(--blue-d);color:var(--on-dark)}

/* ---------- datasheet tables ---------- */
.tblwrap{overflow-x:auto}
table.ds{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:14.5px;line-height:1.4}
table.ds th{font-weight:700;font-size:12px;letter-spacing:.11em;text-transform:uppercase;text-align:left;
  padding:9px 14px 9px 0;border-top:2px solid var(--ink);border-bottom:1px solid var(--ink);white-space:nowrap}
table.ds td{padding:10px 14px 10px 0;border-bottom:1px solid var(--rule-3);vertical-align:top}
table.ds td:first-child{white-space:nowrap}
table.ds .r{text-align:right}
table.ds .v{font-weight:700;text-align:right;white-space:nowrap}
table.ds .sym{font-family:var(--serif);font-style:italic;font-size:16px;white-space:nowrap}
table.ds tr:hover td{background:var(--tint)}
table.ds td a{font-weight:700;white-space:nowrap}
.dim{color:var(--ink-3)}
.fn{font-family:var(--mono);font-size:13px;color:var(--ink-2);line-height:1.55;margin-top:12px;max-width:80ch}
.two{display:grid;grid-template-columns:minmax(0,1fr);gap:34px}
.two > div:last-child{max-width:620px}
.fig{margin:22px 0 6px}
.figcap{font-size:16px;color:var(--ink-2);margin-top:10px}
.figcap b{color:var(--ink)}
svg{display:block;max-width:100%;height:auto}
svg text{font-family:var(--mono)}
.find{font-family:var(--mono);font-size:15px;border:0;border-bottom:1px solid var(--ink);padding:8px 2px;width:min(360px,100%);
  background:transparent;color:var(--ink);border-radius:0;margin-bottom:14px}
.find::placeholder{color:var(--ink-3);opacity:1}
.find:focus{outline:none;border-bottom:2px solid var(--blue)}
dl.also{margin:0}
dl.also dt{font-family:var(--mono);font-weight:700;font-size:15.5px;margin-top:14px}
dl.also dd{margin:2px 0 0 28px;max-width:62ch}

/* ---------- stat tiles ---------- */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));border-top:2px solid var(--ink);border-bottom:1px solid var(--ink);margin-top:14px}
.tile{padding:12px 16px 14px 0}
.tile + .tile{padding-left:16px;border-left:1px solid var(--rule-2)}
.tile .k{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.tile .n{font-size:30px;line-height:1.15;font-variant-numeric:tabular-nums}
.tile .u{font-family:var(--mono);font-size:13px;color:var(--ink-3)}

/* ---------- cross-reference preview card ---------- */
.pop{position:absolute;z-index:50;width:340px;max-width:calc(100vw - 32px);background:var(--paper);border:1px solid var(--ink);
  padding:14px 16px;font-family:var(--mono);font-size:13.5px;line-height:1.5;opacity:0;pointer-events:none;
  transform:translateY(4px);transition:opacity .16s ease,transform .16s ease}
.pop.on{opacity:1;transform:none}
.pop .kind{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ref);font-weight:700}
.pop .kind.int{color:var(--blue)}
.pop .ti{font-family:var(--serif);font-size:18px;line-height:1.3;margin:4px 0 6px;color:var(--ink)}
.pop .go{margin-top:8px;color:var(--blue);font-weight:700}
a.cite{font-family:var(--mono);font-size:.88em;color:var(--ref);white-space:nowrap}
a.xr{font-family:var(--mono);font-size:.9em;font-weight:700;white-space:nowrap}

/* ---------- memo (RFC) ---------- */
.memo{font-family:var(--mono);font-size:16.5px;line-height:1.62;max-width:78ch;margin:0 auto}
.memo .hdr{display:flex;justify-content:space-between;gap:24px;white-space:pre-wrap}
.memo .hdr .rt{text-align:right}
.memo h1{font-family:var(--mono);font-weight:700;font-size:clamp(22px,2.6vw,29px);line-height:1.3;text-align:center;margin:44px auto 40px;max-width:30ch;text-wrap:balance}
.memo h2{font-family:var(--mono);font-weight:700;font-size:18.5px;margin:44px 0 14px;scroll-margin-top:24px}
.memo .b{padding-left:3ch}
.memo .toc{list-style:none;margin:0;padding:0 0 0 3ch}
.memo .toc li{display:flex;align-items:baseline;gap:6px}
.memo .toc .sub{padding-left:3ch}
.memo .toc .d{flex:1;border-bottom:1px dotted var(--ink-3);transform:translateY(-4px)}
.memo .toc a{text-decoration:none}
.memo .toc a:hover{text-decoration:underline}
.pagebreak{display:flex;justify-content:space-between;margin:52px 0 0;padding-bottom:14px;border-bottom:1px solid var(--rule-2);color:var(--ink-2)}
.pagetop{display:flex;justify-content:space-between;margin:14px 0 0;color:var(--ink-2)}
.ascii{color:var(--ink);font-size:14.5px;line-height:1.3;padding:8px 0}
.eq{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:22px 0 8px 3ch;font-family:var(--serif);font-size:27px;font-style:italic}
.eq .no{font-family:var(--mono);font-style:normal;font-size:16px}
.eq .mf{position:relative;padding:2px 4px;background:linear-gradient(var(--tint),var(--tint)) no-repeat 0 0/0% 100%;transition:background-size .9s cubic-bezier(.3,.1,.2,1) .3s}
.eq.on .mf{background-size:100% 100%}
.eq .mf::after{content:"modulating factor";position:absolute;left:0;top:100%;font-family:var(--mono);font-style:normal;font-size:12.5px;
  letter-spacing:.06em;color:var(--blue);white-space:nowrap;border-top:1px solid var(--blue);padding-top:3px;width:100%;opacity:0;transition:opacity .5s ease 1.1s}
.eq.on .mf::after{opacity:1}
.ctl{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-family:var(--mono);font-size:14px;margin:6px 0}
.ctl label{font-size:12px;letter-spacing:.1em;text-transform:uppercase;font-weight:700}
.ctl input[type=range]{accent-color:var(--blue);width:min(280px,60vw)}
.ctl select{max-width:min(380px,100%);font-family:var(--mono);font-size:14px;border:1px solid var(--ink);background:var(--paper);color:var(--ink);padding:6px 8px;border-radius:0}
.ctl output{font-weight:700;min-width:5ch}
.refs{list-style:none;margin:0;padding:0 0 0 3ch}
.refs li{display:grid;grid-template-columns:11ch minmax(0,1fr);gap:1ch;margin-bottom:12px}
.draw{stroke-dasharray:var(--len);stroke-dashoffset:var(--len)}
.on .draw{stroke-dashoffset:0;transition:stroke-dashoffset 1.1s cubic-bezier(.3,.1,.2,1) var(--d,0ms)}
.fadein{opacity:0}.on .fadein{opacity:1;transition:opacity .5s ease var(--d,0ms)}
@media (prefers-reduced-motion:reduce){.draw{stroke-dashoffset:0}.fadein{opacity:1}.eq .mf{background-size:100% 100%}.eq .mf::after{opacity:1}}

/* ---------- launch console ---------- */
.run{border:1px solid var(--ink);margin-top:16px}
.run .bar{display:flex;align-items:center;gap:18px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid var(--ink);background:var(--tint)}
.run .cmd{font-family:var(--mono);font-size:14.5px;padding:12px 16px;border-bottom:1px solid var(--rule-2);overflow-x:auto;white-space:nowrap}
.run .cmd b{color:var(--blue)}
.run .grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.run .pane{padding:16px;min-width:0}
.run .pane + .pane{border-left:1px solid var(--rule-2)}
.run .ph{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--ink-2);margin-bottom:10px}
.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{counter-increment:s;display:grid;grid-template-columns:30px minmax(0,1fr);gap:4px;padding:9px 8px 9px 0;border-bottom:1px solid var(--rule-3);opacity:.42;transition:opacity .3s,background .3s}
.steps li::before{content:counter(s);font-family:var(--mono);font-weight:700;font-size:14px;padding-left:8px}
.steps li.done{opacity:1}
.steps li.now{opacity:1;background:var(--tint)}
.steps li.now .fnm{color:var(--blue)}
.steps .fnm{font-family:var(--mono);font-weight:700;font-size:14.5px}
.steps .why{font-size:16.5px;line-height:1.45;color:var(--ink-2)}
.steps .log{font-family:var(--mono);font-size:13px;color:var(--blue);min-height:1.2em}
.out .tiles{grid-template-columns:repeat(3,minmax(0,1fr))}
.out .tile .n{font-size:26px}
.out table.ds{font-size:13.5px}
.out table.ds td,.out table.ds th{padding:6px 10px 6px 0}
.tp{color:var(--blue);font-weight:700}.fp{color:var(--alert);font-weight:700}

@media (max-width:980px){
  .shell{grid-template-columns:1fr}
  .rail{position:static;height:auto;padding:16px 18px;flex-direction:row;flex-wrap:wrap;align-items:center;gap:6px 14px}
  .rail .brand{border:0;margin:0;padding:0}
  .rail nav{flex-direction:row;flex-wrap:wrap;gap:0 10px}
  .rail .sep,.rail .tiny{display:none}
  .rail .cta{margin:0;padding:6px 10px}
  .sheet{margin:0 12px 12px}
  .two,.run .grid{grid-template-columns:1fr}
  .run .pane + .pane{border-left:0;border-top:1px solid var(--rule-2)}
}

/* ---------- home additions ---------- */
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:2px solid var(--ink);border-bottom:1px solid var(--ink)}
.duo > a{display:block;padding:18px 22px 20px 0;text-decoration:none;color:var(--ink)}
.duo > a + a{padding-left:22px;border-left:1px solid var(--rule-2)}
.duo .t{font-size:26px;line-height:1.2;margin:0 0 8px}
.duo .d{color:var(--ink-2);font-size:17.5px;line-height:1.5}
.duo .go{font-family:var(--mono);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);margin-top:12px}
.duo > a:hover .t{color:var(--blue)}
details.more summary{font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;cursor:pointer;color:var(--blue);margin-top:12px}
details.more p{font-family:var(--mono);font-size:14px;line-height:1.6;color:var(--ink-2);margin:10px 0 0;max-width:80ch}
@media (max-width:980px){.duo{grid-template-columns:1fr}.duo > a + a{padding-left:0;border-left:0;border-top:1px solid var(--rule-2)}}

@media (max-width:980px){
  .tiles{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tile + .tile{border-left:0;padding-left:0}
  .sheet{padding:26px 20px 48px}
  .name{font-size:34px}
  body{font-size:18px}
}

/* ---------- python-backed figures ---------- */
.pystat{font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin:8px 0;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.pystat::before{content:"";width:8px;height:8px;background:var(--ink-3);display:inline-block}
.pystat.live::before{background:var(--blue)}
.pystat.busy::before{background:var(--ref);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:.2}}
details.src{margin-top:12px}
details.src summary{font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;cursor:pointer;color:var(--blue)}
details.src pre{margin-top:10px;padding:16px;background:var(--tint);border:1px solid var(--rule-2);font-size:13px;line-height:1.5;max-height:420px;overflow:auto}
.legend{display:flex;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin-top:8px}
.legend i{display:inline-block;width:14px;height:10px;margin-right:6px;vertical-align:-1px;border:1px solid}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;margin-top:22px}
.sub{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--ink-2)}
@media (max-width:980px){.split{grid-template-columns:1fr;gap:22px}}

/* ---------- plain-worded home ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:48px;align-items:start}
.hero h1{font-size:clamp(34px,3.6vw,46px);font-weight:700;line-height:1.1;letter-spacing:-.01em}
.hero .say{font-size:clamp(21px,2.1vw,26px);font-weight:700;line-height:1.3;margin:12px 0 0;max-width:30ch;text-wrap:balance}
.hero .leadp{margin-top:16px;font-size:20px;line-height:1.55;color:var(--ink)}
.hero img{width:230px;height:230px;border-radius:50%;display:block}
.hero .where{font-family:var(--mono);font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px;line-height:1.5}
.links{display:flex;gap:6px 22px;flex-wrap:wrap;font-family:var(--mono);font-size:14px;font-weight:700;margin-top:6px}
.lab{font-size:16px}
/* finder map */
.finder{display:flex;gap:14px 18px;flex-wrap:wrap;align-items:center;margin:16px 0 6px}
.finder .find{margin:0;width:min(300px,100%)}
.chip{font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:var(--paper);color:var(--ink);border:1px solid var(--ink);padding:7px 12px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--on-dark)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
ul.rel,ol.path{list-style:none;margin:10px 0 0;padding:0}
ul.rel li,ol.path li{padding:9px 0;border-bottom:1px solid var(--rule-3);font-size:18px;line-height:1.35}
.why{font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin-top:2px}
.role{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--blue);margin-bottom:2px}
ol.path li.here{background:var(--tint);padding:10px 12px}
.selhead{font-size:24px;line-height:1.25;margin-top:22px}
.selhead small{display:block;font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin-top:4px}
ul.plain{margin:0;padding-left:1.1em}
@media (max-width:980px){.hero{grid-template-columns:1fr}.hero .side{order:-1}.hero img{width:150px;height:150px}.hero .where{text-align:left}}


/* ---------- pages built from markdown ---------- */
.prose{max-width:780px}
.prose h2{font-family:var(--serif);font-weight:700;font-size:16px;letter-spacing:.1em;text-transform:uppercase;margin:54px 0 14px;scroll-margin-top:24px}
.prose h3{font-weight:700;font-size:24px;line-height:1.25;margin:34px 0 10px}
.prose img{max-width:100%;height:auto;border:1px solid var(--rule-2);margin:8px 0}
.prose table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:14.5px;line-height:1.4;margin:18px 0}
.prose th{font-weight:700;font-size:12px;letter-spacing:.09em;text-transform:uppercase;text-align:left;padding:9px 14px 9px 0;border-top:2px solid var(--ink);border-bottom:1px solid var(--ink)}
.prose td{padding:10px 14px 10px 0;border-bottom:1px solid var(--rule-3)}
.prose .wide{max-width:none;padding-left:0}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));border-top:2px solid var(--ink);border-bottom:1px solid var(--ink);margin:26px 0 8px;max-width:900px}
.facts > div{padding:12px 16px 14px 0}
.facts > div + div{padding-left:16px;border-left:1px solid var(--rule-2)}
.facts .k{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.facts .v{font-size:19px;line-height:1.3;margin-top:2px}
.notice{font-family:var(--mono);font-size:13.5px;line-height:1.55;border:1px solid var(--alert);color:var(--alert);padding:10px 14px;margin:0 0 28px}
.notice a{color:var(--alert)}
/* memo body generated from markdown: headings flush left, everything else indented three characters */
.memo .body > *{margin-left:3ch}
.memo .body > h2{margin-left:0}
.memo .body > .pagebreak,.memo .body > .pagetop,.memo .body > .eq{margin-left:0}
.memo .body > .eq{margin-left:3ch}
.memo .body pre{font-size:14.5px;line-height:1.3;padding:8px 0}
.memo .body .figure{margin-left:3ch}
/* experience on the home page */
.job{display:grid;grid-template-columns:190px minmax(0,1fr);gap:8px 28px;padding:18px 0;border-bottom:1px solid var(--rule-3)}
.job:first-of-type{border-top:2px solid var(--ink)}
.job .when{font-family:var(--mono);font-size:14px;color:var(--ink-2);padding-top:4px}
.job .when small{display:block;font-size:12.5px;margin-top:2px}
.job h3{font-size:22px;font-weight:700;line-height:1.25}
.job .org{font-size:18px;color:var(--ink-2);margin:0 0 8px}
.job ul{margin:0;padding-left:1.1em;font-size:17.5px;line-height:1.5;color:var(--ink-2)}
.job li{margin-bottom:4px}
.job .see{font-family:var(--mono);font-size:13px;margin-top:8px}
tr.more-row{display:none}
.all tr.more-row{display:table-row}
@media (max-width:980px){.job{grid-template-columns:1fr;gap:2px}.facts > div + div{padding-left:0;border-left:0;border-top:1px solid var(--rule-2)}}
.prose.full{max-width:none;padding-left:clamp(0px,5vw,72px)}
.prose.full > h2{margin-left:calc(-1 * clamp(0px,5vw,72px))}
.prose.full > p,.prose.full > ul,.prose.full > ol{max-width:66ch}
.memo .hdr > div > div{white-space:nowrap}
.memo .hdr > div:first-child > div{white-space:normal}

/* ---------- polish pass ---------- */
html{scrollbar-color:var(--rule-2) var(--ground)}
input,textarea{caret-color:var(--blue)}
.rail :focus-visible{outline-color:var(--on-dark)}                    /* a blue ring on the blue rail was invisible */
.about{max-width:70ch;margin-top:40px}
.about p:last-child{margin-bottom:0}
.job ul{max-width:72ch}
.hero .say{max-width:none}
.chip:hover{background:var(--tint)}
.chip[aria-pressed="true"]:hover{background:var(--ink)}
.btn:active,.chip:active{transform:translateY(1px)}
table.ds td,.tile .n,.facts .v{font-variant-numeric:tabular-nums lining-nums}
@media (max-width:980px){
  .shell{grid-template-columns:minmax(0,1fr)}
  .rail{min-width:0}
  .rail nav{flex:1 1 100%;width:100%;min-width:0;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
  .rail nav::-webkit-scrollbar{display:none}
  .rail nav a{white-space:nowrap}
}
@media (max-width:560px){body:not(.post) .rail nav{flex-wrap:wrap;overflow:visible;gap:2px 10px}}   /* the site nav wraps on phones; a post's section list keeps scrolling */
.body a[href^="http"],.prose a[href^="http"]{overflow-wrap:anywhere}                               /* a bare URL in the text never widens a phone page */

/* ---------- reads, projects, papers ---------- */
.name.long{font-size:clamp(28px,3.4vw,44px);max-width:26ch}
.see-list{margin:4px 0 0;padding-left:1.1em;font-size:17px;line-height:1.5}
.job ul.see-list{color:var(--ink)}
/* equations: native MathML, numbered on the right */
.eq{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:20px 0;font-style:normal;font-size:inherit;overflow-x:auto}
.eq math{font-size:1.3em;font-family:"STIX Two Math","Cambria Math","Latin Modern Math",serif}
.eq .no{font-family:var(--mono);font-size:15px;color:var(--ink-2);flex:none}
math{font-family:"STIX Two Math","Cambria Math","Latin Modern Math",serif}
/* interactive figures */
figure{margin:0}
.figure{margin:26px 0 30px;padding:18px 0 4px;border-top:2px solid var(--ink);border-bottom:1px solid var(--ink)}
.fig-controls{display:flex;gap:10px 28px;flex-wrap:wrap;margin-bottom:8px}
.fig-controls .ctl{margin:0}
.fig-controls label{font-family:var(--mono);font-size:13px;letter-spacing:.06em;text-transform:none;font-weight:700}
.figure .plot{margin:6px 0}
.figure .tiles{border-top:1px solid var(--rule-2);border-bottom:0;margin-top:8px}
.figure .tile .n{font-size:22px;line-height:1.25;font-family:var(--serif)}
.figure figcaption{font-family:var(--serif);font-size:16.5px;line-height:1.5;color:var(--ink-2);margin:12px 0 8px;max-width:68ch}
.figure figcaption b{color:var(--ink)}
.figure .pystat{display:inline;font-family:var(--mono);font-size:12.5px;margin:0}
.figure .pystat::before{display:none}
.figure .trace.draw{transition:stroke-dashoffset 1.2s cubic-bezier(.3,.1,.2,1) .2s}
.figure .bar{transform-box:fill-box;transform-origin:bottom;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.figure:not(.on) .bar{transform:scaleY(0)}
.figure .cell{transition:fill-opacity .3s ease}
@media (prefers-reduced-motion:reduce){.figure .bar{transition:none;transform:none!important}}
/* pictures and code inside reads */
.memo .body figure.pic{margin:24px 0 24px 3ch}
.memo .body figure.pic img{display:block;max-width:100%;height:auto;border:1px solid var(--rule-3)}
.memo .body figure.pic figcaption{font-size:14px;color:var(--ink-2);margin-top:8px;line-height:1.5}
.memo .body h3{font-family:var(--mono);font-weight:700;font-size:16.5px;margin:30px 0 10px 0}
.memo .body blockquote{margin:16px 0 16px 3ch;padding:2px 0 2px 2ch;border-left:1px solid var(--ink);color:var(--ink-2)}
.memo .body li{margin-bottom:8px}
.memo .body ul,.memo .body ol{padding-left:2.4ch}
.memo .body pre{background:var(--tint);padding:14px 16px;border:1px solid var(--rule-2);overflow-x:auto;white-space:pre}
.memo .body .figure{margin-left:3ch}

/* ---------- spec tables inside a read ---------- */
.memo .body .tblwrap{overflow-x:auto;margin:16px 0 6px}
.memo .body table.spec{width:100%;margin:0}
.memo .body table.spec td:first-child{white-space:normal;font-weight:700;padding-right:22px}
.memo .body table.spec td{padding-right:18px}
.memo .body .tblwrap + .note{margin:8px 0 20px}

/* ---------- diagrams drawn by Python ---------- */
.memo .body figure.drawn .tblwrap{margin:0;border:1px solid var(--rule-3);padding:14px 12px;background:var(--paper)}
figure.drawn svg.drawing{display:block;max-width:100%;height:auto;margin:0 auto}
figure.drawn figcaption .by{font-size:12px;color:var(--ink-2);white-space:nowrap;margin-left:6px}
@media (max-width:700px){figure.drawn svg.drawing{max-width:none;min-width:560px}}

.memo .body table.num td:not(:first-child),.memo .body table.num th:not(:first-child){text-align:right;white-space:nowrap}
.memo .body table.num td:first-child{white-space:nowrap}
.memo .body table.small{font-size:12.5px}
.memo .body table.small td,.memo .body table.small th{padding:7px 10px 7px 0}
.memo .body table.spec th.grp{text-align:center!important;border-bottom:1px solid var(--rule-2)}
.memo .body table.spec tr.sep td{border-top:1.5px solid var(--ink)}
.memo .body table.num th{white-space:normal!important;vertical-align:bottom}
.memo .body blockquote.quote ul{margin:0;padding-left:18px}
.memo .body blockquote.quote li{margin:6px 0}

/* reads: equations centred with the number on the right; pictures, diagrams and graphs centred in the column */
.memo .body > .eq{font-family:var(--mono);position:relative;justify-content:center;padding:0 44px;gap:0}
.memo .body > .eq math{font-family:"STIX Two Math","Cambria Math","Latin Modern Math",serif;max-width:100%}
.memo .body > .eq .no{position:absolute;right:0;top:50%;transform:translateY(-50%)}
.memo .body figure.pic img{margin:0 auto}
.memo .body figure.pic figcaption,.memo .body figure.drawn figcaption{text-align:center;max-width:62ch;margin-left:auto;margin-right:auto}
.memo .body figure.drawn .tblwrap{text-align:center}
.memo .body .figure .plot{display:block;margin:6px auto}
.memo .body .note.eqnote{text-align:center;max-width:none}
@media (max-width:700px){.memo .body > .eq{padding:0 0 22px 0;justify-content:flex-start}.memo .body > .eq .no{top:auto;bottom:0;transform:none}}


/* the connections figure fills the column */
svg.links{display:block;width:100%;height:auto;font-family:var(--mono)}
svg.links.narrow{display:none;max-width:360px;margin:0 auto}
@media (max-width:700px){svg.links.wide{display:none}svg.links.narrow{display:block}}

/* tags */
.tags{white-space:normal}
.tag{display:inline-block;font-family:var(--mono);font-size:12px;color:var(--ink-2);background:none;border:0;border-bottom:1px solid var(--rule-2);padding:0 0 1px;margin:2px 10px 2px 0;text-decoration:none;white-space:nowrap}
.tag:hover{color:var(--blue);border-color:var(--blue)}
table.ds td.tags{white-space:normal;max-width:260px}
.memo .hdr [data-tag]{text-decoration:none;border-bottom:1px solid var(--rule-2)}
/* series strip under a post title */
.series{list-style:none;margin:0 auto 34px;padding:10px 0;max-width:62ch;border-top:1px solid var(--ink);border-bottom:1px solid var(--rule-2);font-family:var(--mono);font-size:13px;display:grid;gap:4px}
.series li{display:flex;gap:10px;align-items:baseline}
.series li a{flex:1 1 auto;min-width:0} .series li .dim{white-space:nowrap}
.series .n{width:2ch;color:var(--ink-2)}
.series .here b{color:var(--ink)}

/* on a post the rail lists long section titles: normal case reads better than caps */
body.post .rail nav a{text-transform:none;letter-spacing:.02em;font-size:13.5px}


/* compact CV on the home page */
.cv{border-top:2px solid var(--ink);max-width:880px}
.role{border-bottom:1px solid var(--rule-3)}
.role summary{display:grid;grid-template-columns:150px minmax(0,1fr);gap:4px 22px;padding:12px 0;cursor:pointer;list-style:none;font-family:var(--serif);font-size:17px;line-height:1.45;text-transform:none;letter-spacing:0;color:var(--ink);font-weight:400}
.role summary::-webkit-details-marker{display:none}
.role .when{font-family:var(--mono);font-size:13px;color:var(--ink-2);padding-top:3px}
.role .what b{font-weight:700;color:var(--ink)}
.role .what .dim{color:var(--ink-2)}
.role summary:hover .what b{color:var(--blue)}
.role ul{margin:0 0 12px 172px;padding-left:18px;font-size:15.5px;line-height:1.55}
.role .see{margin:0 0 14px 172px;font-family:var(--mono);font-size:13px}
@media (max-width:700px){.role summary{grid-template-columns:1fr}.role ul,.role .see{margin-left:0}}

/* ---------- the map ---------- */
.lead-s{max-width:66ch;font-size:17.5px;line-height:1.5;color:var(--ink-2);margin:0 0 18px}
.pagetitle{font-size:clamp(30px,3.2vw,40px);font-weight:700;line-height:1.1;margin:0 0 8px}
.finder select{font-family:var(--mono);font-size:13px;background:var(--paper);border:1px solid var(--ink);padding:7px 10px;color:var(--ink);max-width:260px}
.mapwrap{margin:18px calc(-1 * clamp(22px,5vw,76px)) 10px;padding:16px 16px 10px;border-top:2px solid var(--ink);border-bottom:1px solid var(--ink)}
#m{display:block;font-family:var(--mono);font-size:11.5px;height:auto;min-width:900px;max-width:100%;margin:0 auto}
#m a.n{text-decoration:none}
/* the curves, as on the read pages: a plain line is "builds on", dotted is "placed by a shared tag",
   the light ones are an item's other parents (they pass behind boxes; the hover draws them in colour) */
#m .e{fill:none;stroke:var(--ink);stroke-width:1.1;transition:opacity .25s}
#m .e.tag{stroke:var(--ink-3);stroke-dasharray:2 4}
#m .e.also{stroke:var(--ink-3);stroke-width:1;opacity:.45}
#m .n{cursor:pointer;transition:opacity .6s ease}
/* while a hover plays, everything the two searches do not reach eases away, and eases back on the next hover */
#m.playing .n.far{opacity:.09;transition:opacity 1.8s cubic-bezier(.4,0,.2,1) .3s}
#m.playing .e.far{opacity:.05;transition:opacity 1.8s cubic-bezier(.4,0,.2,1) .3s}
#m .n rect.p{stroke-width:1.2;transform-box:fill-box;transform-origin:center}
#m .n text{dominant-baseline:auto}
#m .n .kd{font-size:9px;letter-spacing:.1em;opacity:.78}
#m .n .tt{font-size:11.5px;font-weight:700}
#m .t-read rect.p{fill:var(--blue);stroke:var(--blue)} #m .t-read text{fill:var(--paper)}
#m .t-paper rect.p{fill:var(--ink);stroke:var(--ink)} #m .t-paper text{fill:var(--paper)}
#m .t-proj rect.p{fill:var(--paper);stroke:var(--blue)} #m .t-proj text{fill:var(--blue)}
#m .n:hover rect.p,#m .n:focus-visible rect.p{stroke:var(--ref);stroke-width:2.2}
#m .n:focus-visible{outline:none}
#m .n.sel rect.p{stroke:var(--ref);stroke-width:3}
/* a filter highlights what matches and leaves the rest as it is */
#m .n.hit rect.p{stroke:var(--ref);stroke-width:2.6}
#m .n.hit .rip{animation:rip 1.4s .1s cubic-bezier(.2,.7,.2,1) both}
/* the kind chips: items of another kind step back, opaque so lines never show through text */
#m .n.off rect.p{fill:#F4F6FA!important;stroke:#E3E7EF!important} #m .n.off text{fill:#C3CAD6!important}
#m .n.off{pointer-events:none}
#m .e.off{opacity:.08}
/* nearest first: a soft rust ring leaves each box the moment the search reaches it, and the curves it came
   along draw themselves from the nearer end */
#m .n .rip{fill:none;stroke:var(--ref);stroke-width:2;opacity:0;transform-box:fill-box;transform-origin:center;pointer-events:none}
#m .n.w .rip{animation:rip 1.4s var(--t,0ms) cubic-bezier(.2,.7,.2,1) both}
#m .n.w rect.p{animation:nod .8s var(--t,0ms) cubic-bezier(.22,1,.36,1) both}
@keyframes rip{0%{opacity:.8;transform:scale(1)}100%{opacity:0;transform:scale(1.16,1.5)}}
@keyframes nod{0%{transform:scale(1)}40%{transform:scale(1.035)}100%{transform:scale(1)}}
#m #fx-lines path{fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:var(--len,1000);stroke-dashoffset:var(--len,1000);animation:draw var(--dur,0ms) var(--t0,0ms) cubic-bezier(.45,.05,.35,1) both;pointer-events:none}
#m #fx-lines .wv{stroke:var(--ref);stroke-width:2;animation:draw var(--dur,0ms) var(--t0,0ms) cubic-bezier(.45,.05,.35,1) both,settle .9s var(--s,0ms) ease both}
@keyframes settle{to{opacity:.32}}
#m #fx-lines .wk{stroke:var(--blue);stroke-width:3}
@keyframes draw{to{stroke-dashoffset:0}}
/* the badges: distance (rust, top right) and reading number (blue, top left) sit on the box's corners */
#m .n .d,#m .n .k{opacity:0;pointer-events:none;transform-box:fill-box;transform-origin:center;font-size:10px;font-weight:700}
#m .n .d circle{fill:var(--ref);stroke:var(--paper);stroke-width:1.5} #m .n .k circle{fill:var(--blue);stroke:var(--paper);stroke-width:1.5}
#m .n .d text,#m .n .k text{fill:var(--paper)!important}
#m .n.w .d{animation:stamp .6s var(--t,0ms) cubic-bezier(.22,1,.36,1) both}
#m .n.num .k{animation:stamp .6s var(--k,0ms) cubic-bezier(.22,1,.36,1) both}
#m .n.sel .d{display:none}
@keyframes stamp{0%{opacity:0;transform:scale(1.8)}100%{opacity:1;transform:scale(1)}}
/* the walker */
#m .dot{fill:var(--blue);stroke:var(--paper);stroke-width:2;filter:drop-shadow(0 1px 3px rgba(15,82,186,.55));pointer-events:none}
@media (prefers-reduced-motion:reduce){
  #m #fx-lines path,#m .n.w .rip,#m .n.w rect.p,#m .n.hit .rip,#m .n.w .d,#m .n.num .k{animation:none}
  #m #fx-lines path{stroke-dashoffset:0} #m .n.w .d,#m .n.num .k{opacity:1}
  #m .n,#m .e{transition:none}
}
@media (max-width:980px){.mapwrap{margin-left:0;margin-right:0;padding-left:0;padding-right:0}}
/* the map is 900px at its narrowest: on the explore page the rail folds to the top earlier (a 1280 laptop, an iPad in
   landscape), so the whole map shows; below that the map swipes sideways and a hint says so */
@media (max-width:1300px){
  body.mappage .shell{grid-template-columns:minmax(0,1fr)}
  body.mappage .rail{position:static;height:auto;min-width:0;padding:16px 18px;flex-direction:row;flex-wrap:wrap;align-items:center;gap:6px 14px}
  body.mappage .rail .brand{border:0;margin:0;padding:0}
  body.mappage .rail nav{flex:1 1 100%;width:100%;min-width:0;flex-direction:row;flex-wrap:wrap;gap:0 10px}
  body.mappage .rail nav a{white-space:nowrap}
  body.mappage .rail .sep,body.mappage .rail .tiny{display:none}
  body.mappage .rail .cta{margin:0;padding:6px 10px}
  body.mappage .sheet{margin:0 12px 12px}
}
.maphint{display:none;font-family:var(--mono);font-size:12px;color:var(--ink-2);margin:10px 0 -8px}
.t-touch{display:none} @media (hover:none){.t-touch{display:inline}.t-mouse{display:none}}
@media (max-width:980px){.maphint{display:block}}

.playnote{font-family:var(--mono);font-size:12px;color:var(--ink-2);margin:6px 0 0;min-height:1.4em}
.legend{display:flex;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin-top:8px}
.legend i{display:inline-block;width:14px;height:10px;margin-right:6px;vertical-align:-1px;border:1px solid}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;margin-top:22px}
.sub{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--ink-2)}
@media (max-width:980px){.split{grid-template-columns:1fr;gap:22px}}

.legend{display:flex;gap:16px 22px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--ink-2);margin:0 0 18px}
.legend i{display:inline-block;width:18px;height:12px;border:1px solid var(--ink);vertical-align:-2px;margin-right:6px}
.legend .l-read{background:var(--blue);border-color:var(--blue)} .legend .l-paper{background:var(--ink)} .legend .l-proj{border-color:var(--blue)}
.legend .l-edge{width:22px;height:0;border:0;border-top:1.5px solid var(--ink);border-radius:0;vertical-align:3px}
.legend .l-also{width:22px;height:0;border:0;border-top:1px solid var(--ink-3);border-radius:0;vertical-align:3px}
.legend .l-tag{width:22px;height:0;border:0;border-top:1.5px dotted var(--ink-3);border-radius:0;vertical-align:3px}
.legend .l-d,.legend .l-k{width:16px;height:16px;border-radius:50%;border:1.5px solid var(--paper);color:var(--on-dark);font-style:normal;font-weight:700;font-size:10px;text-align:center;line-height:16px;vertical-align:-3px;box-shadow:0 0 0 1px var(--rule-2)}
.legend .l-d{background:var(--ref)} .legend .l-k{background:var(--blue)}
#m-sel{border-top:1px solid var(--rule-2);padding-top:12px}
@media (max-width:700px){.mapwrap{overflow-x:auto}}

/* generated series */
.seriesbox{margin-top:40px;border-top:2px solid var(--ink);padding-top:14px}
.pick{font-family:var(--mono);font-size:13px;display:inline-flex;gap:8px;align-items:center}
.pick select{font-family:var(--mono);font-size:13px;border:1px solid var(--ink);background:var(--paper);padding:6px 8px;max-width:240px}
.gen{margin:18px 0 8px}
.gen .series{margin:6px 0 0;max-width:none;border-top:1px solid var(--rule-2)}
.gen details.src pre{max-height:220px}

/* MathML Core ignores the columnalign attribute, so honour it in CSS: array{l} rows share a left edge, {r} a right edge */
math mtd[columnalign="left"]{text-align:left}
math mtd[columnalign="right"]{text-align:right}
math mtd[columnalign="center"]{text-align:center}
math mtable{margin:0 auto}
.eq math{line-height:1.35}
.eq .no{align-self:center}


/* the starter picker in the intro */
.starters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:10px}
.starters .btn{padding:6px 12px;font-size:12px}
.starters .btn[aria-pressed="true"]{background:var(--ink);color:var(--on-dark);border-color:var(--ink)}
.starters .verdict{flex:1 1 100%;margin:4px 0 0;font-style:italic;color:var(--ink-2);min-height:1.4em}

/* ---------- ask the map (figures/wiki.py, api/ask.py) ---------- */
.ask{margin:18px 0 6px;padding:16px 18px 10px;border:1px solid var(--ink);background:var(--paper)}
.askbox .sub{display:block;margin-bottom:8px}
.askrow{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.askrow .find{flex:1 1 320px;margin:0;font-size:16px}
.askrow .chip .left{font-weight:400;letter-spacing:0;text-transform:none;opacity:.8}
.examples{margin-top:10px}
.chip.eg{font-weight:400;text-transform:none;letter-spacing:0;font-size:12.5px;border-color:var(--rule-2);color:var(--ink-2)}
.chip.eg:hover{color:var(--ink);border-color:var(--ink)}
.answer{margin-top:14px;padding-top:12px;border-top:1px solid var(--rule-2)}
.answer p{margin:8px 0;max-width:70ch}
.answer ol.path li{padding:6px 0}
ol.chain{list-style:none;margin:8px 0 0;padding:0;font-size:17px;line-height:1.4}
ol.chain li{padding:4px 0}
ol.chain .how{font-family:var(--mono);font-size:12px;color:var(--ref);letter-spacing:.04em;padding:2px 0 2px 18px;position:relative}
ol.chain .how::before{content:"↓";position:absolute;left:2px;color:var(--ink-3)}
.said{font-size:18px;line-height:1.55;max-width:70ch}
.said .cite{font-family:var(--mono);font-size:12px;color:var(--blue);text-decoration:none;vertical-align:super;margin-left:1px}
ol.srcs{list-style:none;margin:10px 0 0;padding:0;font-size:15px}
ol.srcs li{padding:4px 0;border-bottom:1px solid var(--rule-3)}
ol.srcs .n{font-family:var(--mono);font-size:12px;color:var(--blue);margin-right:6px}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);margin:0 0 6px}
ul.rel.broad li{padding:10px 0}
ul.rel.broad .role{margin-bottom:4px}
ul.rel.broad .trail a{white-space:normal}
ul.rel.broad .tags .tag{font-size:13px}
@media (max-width:700px){.ask{padding:12px 12px 8px}.askrow .find{font-size:15px}}
.askpage .ask{border:0;padding:0;margin:0}
.askpage .askrow .find{font-size:18px}
#ask-model.lead{background:var(--blue);color:var(--on-dark);border-color:var(--blue)}

/* ---------- the CV page ---------- */
ol.jobs{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.jobrow{display:grid;grid-template-columns:170px minmax(0,1fr);gap:6px 28px;padding:20px 0;border-bottom:1px solid var(--rule-3)}
.jobrow .when{font-family:var(--mono);font-size:13px;color:var(--ink-2);padding-top:5px;line-height:1.5}
.jobrow h3{font-size:21px;line-height:1.3;margin:0 0 6px;font-weight:700}
.jobrow h3 .org{font-weight:400;color:var(--ink-2)}
.jobrow ul{margin:0;padding-left:20px;max-width:76ch;list-style:disc}
.jobrow li{margin:4px 0;line-height:1.5}
.jobrow .used{font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin:10px 0 0;max-width:76ch;line-height:1.6}
.jobrow .used .k{letter-spacing:.1em;text-transform:uppercase;font-size:11px;margin-right:6px;color:var(--ink-3)}
.jobrow .tags{margin:8px 0 0}
.tag.page{border-bottom-color:var(--blue);color:var(--blue);white-space:normal}
.cvpage .split{gap:44px;margin-top:0}
@media (max-width:700px){.jobrow{grid-template-columns:minmax(0,1fr);gap:2px}.jobrow .when{padding-top:0}.jobrow .when div{display:inline}.jobrow .when .dim::before{content:" · "}}

/* ---------- the floating Ask ---------- */
.askfab{position:fixed;right:18px;bottom:18px;z-index:40;font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:var(--ink);color:var(--on-dark);border:1px solid var(--ink);padding:10px 14px;cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.18);display:flex;gap:8px;align-items:center}
.askfab:hover{background:var(--blue);border-color:var(--blue)}
.askfab-k{display:inline-block;width:18px;height:18px;border-radius:50%;background:var(--paper);color:var(--ink);text-align:center;line-height:18px;font-size:12px}
.askfab[aria-expanded="true"]{background:var(--blue);border-color:var(--blue)}
.askpanel{position:fixed;right:18px;bottom:66px;z-index:41;width:min(440px,calc(100vw - 36px));max-height:min(70vh,640px);overflow:auto;background:var(--paper);border:1px solid var(--ink);box-shadow:0 14px 40px rgba(0,0,0,.22);padding:14px 16px 10px;font-size:16px}
.askpanel-h{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.askpanel-x{background:none;border:0;font-size:22px;line-height:1;cursor:pointer;color:var(--ink-2);padding:0 2px}
.askpanel-ctx{font-family:var(--mono);font-size:12px;color:var(--ink-2);margin:0 0 10px;line-height:1.5}
.askpanel .askrow .find{font-size:15px;flex-basis:200px}
.askpanel .answer{font-size:15px}
.askpanel .answer ol.path li,.askpanel ul.rel li{font-size:15px;padding:6px 0}
.askpanel .said{font-size:15px}
.askpanel .sub{font-size:11px}
.askpanel-more{font-family:var(--mono);font-size:12px;margin:8px 0 0}
@media (max-width:700px){.askfab{right:12px;bottom:12px}.askpanel{right:12px;left:12px;width:auto;bottom:60px;max-height:72vh}}
@media print{.askfab,.askpanel{display:none}}
dl.skills{margin:0;border-top:2px solid var(--ink);max-width:900px}
dl.skills .skill{display:grid;grid-template-columns:170px minmax(0,1fr);gap:6px 28px;padding:12px 0;border-bottom:1px solid var(--rule-3)}
dl.skills dt{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);padding-top:5px}
dl.skills dd{margin:0;display:flex;flex-wrap:wrap;gap:6px 8px}
dl.skills .pill{font-family:var(--mono);font-size:12.5px;border:1px solid var(--rule-2);padding:3px 8px;color:var(--ink)}
@media (max-width:700px){dl.skills .skill{grid-template-columns:minmax(0,1fr);gap:4px}}

/* ---------- list pager ---------- */
.pager{display:flex;align-items:center;gap:14px;margin:14px 0 4px;font-family:var(--mono);font-size:13px}
.pager .pg-n{color:var(--ink-2);min-width:5ch;text-align:center}
.pager .chip:disabled{opacity:.35;cursor:default}

/* ---------- interactive scenes (figures/scene3d.py) ---------- */
.figure .plot.orbit{cursor:grab;touch-action:pan-y}
.figure .plot.dragging{cursor:grabbing}
.figure .plot .lbl.halo{paint-order:stroke;stroke:var(--paper);stroke-width:3px;stroke-linejoin:round}
.figure .plot .handle{cursor:grab;touch-action:none;outline:none}
.figure .plot .handle .ring{fill:none;stroke:var(--blue);stroke-width:1.5;stroke-dasharray:3 3;opacity:.55;transition:opacity .15s}
.figure .plot .handle:hover .ring,.figure .plot .handle:focus .ring,.figure .plot.dragging .handle .ring{opacity:1;stroke-dasharray:none}
.figure .plot .hot{stroke-width:3!important;filter:drop-shadow(0 0 2px rgba(15,82,186,.45))}
.figure .plot circle.pt.hot{r:6}
.figure .plot .ghost{opacity:.5}
.tile.hot .k{color:var(--blue)}
.tile.m .mat{display:inline-grid;gap:2px 14px;font-family:var(--mono);font-size:15px;padding:6px 10px;margin:4px 0;border-left:1.5px solid var(--ink);border-right:1.5px solid var(--ink);font-variant-numeric:tabular-nums;text-align:right}
.tile.m .mat .hot{color:var(--blue);font-weight:700}
.ctl .play{font-family:var(--mono);font-size:12px;border:1px solid var(--ink);background:var(--paper);padding:3px 9px;cursor:pointer;line-height:1.2}
.ctl .play[aria-pressed="true"]{background:var(--ink);color:var(--on-dark)}
.ctl.pad output{color:var(--blue)}
.ctl.presets{gap:8px}
.ctl.presets .chip{padding:5px 10px;font-size:11.5px}
.ctl.toggle,.ctl.steps{gap:6px}
.ctl.toggle .chip,.ctl.steps .chip{padding:5px 10px;font-size:11.5px}
.ctl.steps .stepname{font-family:var(--mono);font-size:12.5px;color:var(--ink-2);min-width:12ch}
.ctl.toggle .chip[aria-pressed="true"]{background:var(--ink);color:var(--on-dark)}
/* matrix readouts: a matrix tile takes two columns where there is room, and never spills into its neighbour */
.tiles{grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}
.tile{min-width:0}
.tile.m{grid-column:span 2}
.tile.m .mat{max-width:100%;overflow-x:auto;font-size:14px;gap:2px 12px}
.tile .n{overflow-wrap:anywhere}
@media (max-width:560px){.tile.m{grid-column:1/-1}.tile + .tile{border-left:0;padding-left:0;border-top:1px solid var(--rule-2)}}
@media (max-width:560px){.figure .plot.flat{min-width:520px}}
/* in the geometry figures a label's case is part of its meaning (x is a pixel, X a world point): never capitalise it */
.figure[data-kind="scene"] .tile .k{text-transform:none;letter-spacing:.02em;font-size:12.5px}
.figure[data-kind="scene"] .plot text{text-transform:none}
/* a wide Markdown table scrolls inside the column instead of widening a phone page */
.memo .body > table,.prose > table{display:block;max-width:100%;overflow-x:auto}
/* phones: the 3-D picture is drawn 480 wide and shown ~330 px, so its labels are set larger to stay readable */
.figure .plot.n g.sc text{font-size:16px}
.figure .plot.n g.sc text[font-weight="700"]{font-size:17px}

/* ---------- readouts: one aligned grid; the 1 px gaps on an ink-grey ground are the dividing lines, so they stay
   straight however the tiles wrap ---------- */
.figure .tiles{display:flex;flex-wrap:wrap;gap:1px;background:var(--rule-2);border-top:2px solid var(--ink);border-bottom:1px solid var(--ink);margin-top:14px;grid-template-columns:none}
.figure .tiles .tile{flex:1 1 150px;min-width:0;background:var(--paper);padding:12px 16px 14px;border:0!important;margin:0;grid-column:auto}
.figure .tiles .tile + .tile{padding-left:16px;border-left:0}
.figure .tiles .tile.m{flex:1 0 auto}
.figure .tiles .tile .k{min-height:2.5em;display:flex;align-items:flex-end}
.figure .tiles .tile .n{font-size:24px;line-height:1.2;font-variant-numeric:tabular-nums;margin:2px 0}
.figure .tiles .tile .u{line-height:1.45}
.figure .tiles .tile.m .mat{display:inline-grid;justify-items:end;gap:3px 16px;font-size:14px;margin:4px 0 6px;padding:4px 10px;max-width:100%;overflow-x:auto}
@media (max-width:560px){.figure .tiles .tile,.figure .tiles .tile.m{flex:1 1 100%}.figure .tiles .tile .k{min-height:0}}
/* the camera panel: grouped controls fold away so the figure stays the first thing you see */
.fig-controls .ctlgroup{border:1px solid var(--rule-2);margin:8px 0;padding:0 12px}
.fig-controls .ctlgroup summary{cursor:pointer;font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;font-weight:700;padding:9px 0;color:var(--blue)}
.fig-controls .ctlgroup[open] summary{border-bottom:1px solid var(--rule-3);margin-bottom:6px}
.fig-controls .ctlgroup-b{padding-bottom:6px}
/* sliders line up: label, track and value in fixed columns */
.figure .fig-controls .ctl:not(.presets):not(.toggle):not(.steps):not(.pad){display:grid;grid-template-columns:minmax(150px,240px) minmax(140px,1fr) 4.5em auto;align-items:center;gap:6px 14px;margin:5px 0}
.figure .fig-controls .ctl:not(.presets):not(.toggle):not(.steps):not(.pad) input[type=range]{width:100%}
.figure .fig-controls .ctl output{font-variant-numeric:tabular-nums;text-align:right}
@media (max-width:560px){.figure .fig-controls .ctl:not(.presets):not(.toggle):not(.steps):not(.pad){grid-template-columns:1fr 4em auto}.figure .fig-controls .ctl:not(.presets):not(.toggle):not(.steps):not(.pad) label{grid-column:1/-1}}

/* home: Contact, a plain invitation for projects (content/site.yml contact:) */
#contact .contact-lead{max-width:62ch;color:var(--ink);font-size:19px;line-height:1.55}
#contact .contact-lead b{color:var(--blue)}
#contact h3.help,#contact h3.else{font-family:var(--mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:30px 0 0}
.consult{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:2px solid var(--ink)}
.consult li{display:grid;grid-template-columns:34px minmax(0,1fr);column-gap:6px;align-content:start;padding:14px 20px 14px 0;border-bottom:1px solid var(--rule-2);min-width:0}
.consult li:nth-child(2n){padding-left:20px;border-left:1px solid var(--rule-3)}
.consult .mk{grid-row:span 2;font-size:20px;line-height:1.2}
.consult b{font-family:var(--mono);font-size:14px;letter-spacing:.05em;text-transform:uppercase;line-height:1.4}
.consult li span:last-child{font-size:16.5px;line-height:1.5;margin-top:3px}
.reach{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:22px 44px;align-items:center;margin:28px 0 10px;padding:22px 24px;background:var(--tint);border:1px solid var(--rule-2)}
.reach .send{margin:0;font-size:17.5px;line-height:1.55}
.reach .ways{display:flex;flex-direction:column;gap:10px}
.reach .ways .btn{text-align:center}
.reach .addr{margin:2px 0 0;font-family:var(--mono);font-size:14px;text-align:center}
.stack{display:grid;grid-template-columns:220px minmax(0,1fr);margin:12px 0 0;border-top:2px solid var(--ink)}
.stack dt,.stack dd{margin:0;padding:12px 0;border-bottom:1px solid var(--rule-2)}
.stack dt{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding-top:16px}
.stack dd{display:flex;flex-wrap:wrap;gap:8px}
.stack dd span{font-family:var(--mono);font-size:13.5px;padding:4px 10px;border:1px solid var(--rule-2);background:var(--tint);white-space:nowrap}
@media (max-width:760px){.stack{grid-template-columns:1fr}.stack dt{border-bottom:0;padding-bottom:0}
  .consult{grid-template-columns:1fr}
  .consult li:nth-child(2n){padding-left:0;border-left:0}
  .reach{grid-template-columns:1fr;padding:18px 16px}
  #contact .contact-lead{font-size:17.5px}}

/* ---------- paper palette: the rail and sheet on the recycled-paper ground ---------- */
.rail{color:var(--ink)}
.rail .brand{color:var(--ink);border-bottom-color:rgba(29,26,21,.28);font-size:17px;letter-spacing:.07em;line-height:1.3}
@media (max-width:980px){.rail .brand{font-size:15px}}
@media (max-width:1300px){body.mappage .rail .brand{font-size:15px}}
.rail nav a{color:var(--ink-2)}
.rail nav a:hover{background:rgba(29,26,21,.07);color:var(--ink)}
.rail nav a[aria-current="true"]{background:var(--blue);color:var(--on-dark)}
.rail .sep{border-top-color:rgba(29,26,21,.28)}
.rail .cta{border-color:var(--ink);color:var(--ink);background:rgba(251,247,236,.55)}
.rail .cta:hover{background:var(--ink);color:var(--on-dark)}
.rail .tiny{color:var(--ink-3);opacity:1}
.sheet{background-color:var(--paper);background-image:url(/images/paper-sheet.png);
  box-shadow:0 1px 2px rgba(74,60,36,.08),0 18px 40px -18px rgba(74,60,36,.28)}
.askfab{box-shadow:0 6px 18px rgba(74,60,36,.24)}

/* home: the tagline under the name */
.hero .tagline{font-family:var(--mono);font-style:normal;font-weight:700;font-size:clamp(24px,2.5vw,32px);line-height:1.3;letter-spacing:-.01em;color:var(--ink);max-width:28ch;text-wrap:balance;margin:0 0 26px;padding:0;border:0}
@media (max-width:560px){.hero .tagline{font-size:23px;margin:0 0 20px}}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}

.hero .where{white-space:nowrap}

/* ---------- series: /series/ and /series/<name>/ ---------- */
.sindex{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 44px;border-top:2px solid var(--ink);margin-top:26px}
.sblock{padding:24px 0 26px;border-bottom:1px solid var(--rule-2);min-width:0}
.sblock h2{font-family:var(--serif);font-weight:700;font-size:25px;line-height:1.2;margin:0 0 8px}
.sblock h2 a{color:var(--ink);text-decoration:none}
.sblock h2 a:hover{color:var(--blue)}
.sblock .about{margin:0 0 8px;font-size:17px;line-height:1.5;color:var(--ink-2)}
.sblock .meta,.spart .meta,.smeta{font-family:var(--mono);font-size:13px;color:var(--ink-3);margin:0 0 12px;line-height:1.5}
.sparts{list-style:none;margin:0 0 14px;padding:0;font-size:15px;line-height:1.45;columns:2;column-gap:24px}
.sparts li{display:flex;gap:8px;break-inside:avoid;padding:2px 0}
.sparts .n{font-family:var(--mono);font-size:12.5px;color:var(--blue);min-width:2ch;text-align:right;padding-top:2px}
.sblock .go{font-family:var(--mono);font-weight:700;font-size:13px;letter-spacing:.1em;text-transform:uppercase;text-decoration:none}
.smeta{margin-top:-4px}
.spine{list-style:none;margin:30px 0 0;padding:0;position:relative}
.spine::before{content:"";position:absolute;left:23px;top:10px;bottom:24px;width:1px;background:var(--rule-2)}
.spart{display:grid;grid-template-columns:48px minmax(0,1fr);column-gap:22px;padding:0 0 30px;position:relative}
.spart .num{width:48px;height:48px;border-radius:50%;background:var(--paper);border:1.5px solid var(--blue);color:var(--blue);
  font-family:var(--serif);font-weight:700;font-size:20px;display:flex;align-items:center;justify-content:center;position:relative;z-index:1}
.spart:first-child .num{background:var(--blue);color:var(--on-dark)}
.spart h2{font-family:var(--serif);font-weight:700;font-size:22px;line-height:1.25;margin:9px 0 4px;text-wrap:balance}
.spart h2 a{color:var(--ink);text-decoration:none}
.spart h2 a:hover{color:var(--blue);text-decoration:underline}
.spart .hl{margin:0;padding-left:20px;font-size:17px;line-height:1.5;max-width:68ch}
.spart .hl li{margin:0 0 4px}
.spart .hl li::marker{color:var(--blue)}
.spart .sum{margin:0;font-size:17px;line-height:1.5;color:var(--ink-2);max-width:68ch}
@media (max-width:900px){.sindex{grid-template-columns:1fr}}
@media (max-width:560px){.sparts{columns:1}.spine::before{left:17px}.spart{grid-template-columns:36px minmax(0,1fr);column-gap:14px}
  .spart .num{width:36px;height:36px;font-size:16px}.spart h2{font-size:19px;margin-top:5px}.spart .hl,.spart .sum{font-size:16px}}