@font-face{
  font-family:"Newsreader";
  src:url(/fonts/newsreader-latin.woff2) format("woff2");
  font-weight:400 700;
  font-style:normal;
  font-display:swap;
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face{
  font-family:"Newsreader";
  src:url(/fonts/newsreader-latin-ext.woff2) format("woff2");
  font-weight:400 700;
  font-style:normal;
  font-display:swap;
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face{
  font-family:"Faustina";
  src:url(/fonts/faustina-latin.woff2) format("woff2");
  font-weight:400 700;
  font-style:normal;
  font-display:swap;
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face{
  font-family:"Faustina";
  src:url(/fonts/faustina-latin-ext.woff2) format("woff2");
  font-weight:400 700;
  font-style:normal;
  font-display:swap;
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face{
  font-family:"Faustina";
  src:url(/fonts/faustina-italic-latin.woff2) format("woff2");
  font-weight:400 700;
  font-style:italic;
  font-display:swap;
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face{
  font-family:"Faustina";
  src:url(/fonts/faustina-italic-latin-ext.woff2) format("woff2");
  font-weight:400 700;
  font-style:italic;
  font-display:swap;
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face{
  font-family:"Inconsolata";
  src:url(/fonts/inconsolata-latin.woff2) format("woff2");
  font-weight:400 700;
  font-style:normal;
  font-stretch:50% 200%;
  font-display:swap;
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face{
  font-family:"Inconsolata";
  src:url(/fonts/inconsolata-latin-ext.woff2) format("woff2");
  font-weight:400 700;
  font-style:normal;
  font-stretch:50% 200%;
  font-display:swap;
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root{
  --paper:#FAF7F0;
  --ink:#171410;
  --blue:#1F4E79;
  --madder:#A8622A;
  --rule:rgba(23,20,16,.15);
  --rule-mid:rgba(23,20,16,.30);
  --muted:rgba(23,20,16,.66);
  --blue-soft:rgba(31,78,121,.30);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:hidden}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Faustina",Georgia,serif;
  font-size:19px;
  line-height:1.62;
  font-optical-sizing:auto;
  overflow-x:hidden;
}
::selection{background:var(--blue);color:var(--paper)}
a{color:inherit;text-decoration:none;border-bottom:1px solid var(--blue-soft)}
a:hover{border-bottom-color:var(--blue)}
h1,h2,h3,h4{font-family:"Newsreader",Georgia,serif;font-weight:500;margin:0;font-optical-sizing:auto}
p{margin:0 0 1.05rem}
.wrap{max-width:76rem;margin:0 auto;padding:0 2.2rem}
.measure{max-width:66ch}
.n,.mono{font-family:"Inconsolata",monospace;font-stretch:84%;font-variant-numeric:tabular-nums lining-nums}

/* masthead ---------------------------------------------------------------- */
.mast-rule{height:3px;background:var(--blue);transform-origin:0 50%;animation:draw .9s cubic-bezier(.2,.7,.3,1) both}
@keyframes draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media (prefers-reduced-motion:reduce){.mast-rule{animation:none}}
.mast{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;padding:1.15rem 0 .95rem;flex-wrap:wrap}
.wordmark{font-family:"Newsreader",Georgia,serif;font-size:1.34rem;letter-spacing:.005em;border:0;display:inline-flex;align-items:center;gap:.6rem}
.wordmark:hover{border:0}
.wordmark i{display:inline-block;width:11px;height:11px;border-left:1.5px solid var(--blue);border-bottom:1.5px solid var(--blue)}
.mast-meta{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}
nav.rail{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);overflow-x:auto;-webkit-overflow-scrolling:touch}
nav.rail ul{list-style:none;margin:0;padding:0;display:flex;gap:1.55rem;white-space:nowrap}
nav.rail a{display:block;padding:.62rem 0;border:0;font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.78rem;text-transform:uppercase;letter-spacing:.11em;color:var(--muted)}
nav.rail a:hover{color:var(--ink)}
nav.rail a[aria-current]{color:var(--blue);box-shadow:inset 0 -2px 0 var(--blue)}

/* hero -------------------------------------------------------------------- */
.hero{display:grid;grid-template-columns:minmax(0,1fr) 15.5rem;gap:3rem;padding:4rem 0 2.6rem;align-items:start}
.kicker{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.72rem;text-transform:uppercase;letter-spacing:.17em;color:var(--blue);display:flex;align-items:center;gap:.55rem;margin:0 0 1.25rem}
.kicker::before{content:"";width:9px;height:9px;border-left:1.5px solid var(--blue);border-bottom:1.5px solid var(--blue);flex:none}
h1{font-size:clamp(2.45rem,5.6vw,4.3rem);line-height:1.02;letter-spacing:-.021em;max-width:19ch}
.lead{font-size:1.2rem;line-height:1.5;max-width:60ch;margin-top:1.5rem}
.titleblock{border:1px solid var(--rule-mid);font-family:"Inconsolata",monospace;font-stretch:84%}
.tb{padding:.6rem .75rem;border-bottom:1px solid var(--rule)}
.tb:last-child{border-bottom:0}
.tb b{display:block;font-weight:400;font-size:.63rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}
.tb span{display:block;font-size:.92rem;font-variant-numeric:tabular-nums lining-nums;margin-top:.12rem}

/* sections ---------------------------------------------------------------- */
section{padding:3.1rem 0;border-top:1px solid var(--rule)}
section:first-of-type{border-top:0}
.h2row{display:flex;align-items:baseline;gap:.9rem;margin:0 0 1.5rem}
.secnum{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.78rem;color:var(--blue);letter-spacing:.1em;flex:none;padding-top:.2rem}
h2{font-size:clamp(1.5rem,2.5vw,2rem);line-height:1.12;letter-spacing:-.012em}
h3{font-size:1.16rem;line-height:1.25;margin:2.1rem 0 .6rem}
h4{font-size:.98rem;margin:1.5rem 0 .4rem}
.note{font-size:.94rem;color:var(--muted);max-width:64ch}
.note-i{font-style:italic}
ul.plain,ol.plain{max-width:66ch;padding-left:1.15rem;margin:0 0 1.1rem}
ul.plain li,ol.plain li{margin-bottom:.5rem}

/* figures ----------------------------------------------------------------- */
.figs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--ink);border-bottom:1px solid var(--rule)}
.fig{padding:1.15rem 1.1rem 1.2rem;border-right:1px solid var(--rule)}
.fig:last-child{border-right:0}
.fig-v{font-family:"Inconsolata",monospace;font-stretch:84%;font-variant-numeric:tabular-nums lining-nums;font-size:clamp(1.85rem,3.6vw,2.7rem);line-height:1;letter-spacing:-.01em}
.fig-v.accent{color:var(--blue)}
.fig-u{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin-top:.5rem}
.fig-m{font-size:.82rem;color:var(--muted);margin-top:.5rem;line-height:1.4}

/* tables ------------------------------------------------------------------ */
.scroller{overflow-x:auto;-webkit-overflow-scrolling:touch;border-bottom:1px solid var(--rule);margin:0 0 1.45rem}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums lining-nums;min-width:34rem}
caption{caption-side:top;text-align:left;font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.73rem;text-transform:uppercase;letter-spacing:.12em;color:var(--blue);padding:0 0 .7rem;line-height:1.5}
caption em{font-style:normal;color:var(--muted);text-transform:none;letter-spacing:.04em}
th,td{text-align:left;padding:.52rem .8rem .52rem 0;border-bottom:1px solid var(--rule);vertical-align:top;font-size:.94rem;line-height:1.42}
th{font-family:"Inconsolata",monospace;font-stretch:84%;font-weight:400;font-size:.7rem;text-transform:uppercase;letter-spacing:.11em;color:var(--muted);border-bottom:1px solid var(--ink);white-space:nowrap}
td.num,th.num{text-align:right;font-family:"Inconsolata",monospace;font-stretch:84%;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
td .sub{display:block;font-size:.8rem;color:var(--muted);line-height:1.35}
.gap{color:var(--muted);font-style:italic}
.tag{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.63rem;text-transform:uppercase;letter-spacing:.1em;border:1px solid var(--rule-mid);padding:.08rem .34rem;white-space:nowrap;color:var(--muted)}

/* quotes ------------------------------------------------------------------ */
.quote{margin:1.4rem 0;padding:.15rem 0 .15rem 1.35rem;border-left:2px solid var(--blue);max-width:64ch}
.quote p{font-size:1.03rem;line-height:1.55;margin-bottom:.7rem}
.cite{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.75rem;line-height:1.5;color:var(--muted);display:block}
.cite b{font-weight:400;color:var(--ink)}
.prov{border-top:1px solid var(--rule);padding-top:1.6rem;margin-top:1.9rem}
.prov:first-of-type{border-top:0}
.provid{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.72rem;letter-spacing:.08em;color:var(--blue)}

/* land-class keys: the ONLY place madder appears --------------------------- */
.key{color:var(--madder);display:inline-flex;align-items:baseline;gap:.42rem;font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.82rem;text-transform:uppercase;letter-spacing:.07em}
.key::before{content:"";width:8px;height:8px;border:1.5px solid var(--madder);flex:none;transform:translateY(-1px)}
.keyname{color:var(--madder)}

/* diagrams ---------------------------------------------------------------- */
figure{margin:1.9rem 0}
figure svg{display:block;width:100%;height:auto;max-width:56rem}
figcaption{font-size:.85rem;color:var(--muted);margin-top:.75rem;max-width:60ch;line-height:1.5}
.svg-l{fill:none;stroke:var(--blue);stroke-width:1}
.svg-h{fill:none;stroke:var(--ink);stroke-width:1}
.svg-t{fill:var(--ink);font-family:"Inconsolata",monospace;font-stretch:84%;font-size:12px}
.svg-m{fill:rgba(23,20,16,.66);font-family:"Inconsolata",monospace;font-stretch:84%;font-size:11px}

/* cards ------------------------------------------------------------------- */
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(17rem,1fr));gap:0;border-top:1px solid var(--ink)}
.col{padding:1.3rem 1.4rem 1.5rem 0;border-right:1px solid var(--rule);padding-right:1.4rem}
.col:last-child{border-right:0}
.col h3{margin-top:0;font-size:1.05rem}
.col p{font-size:.92rem;margin-bottom:.6rem;color:var(--muted)}
.col a{font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--blue);border-bottom-color:var(--blue-soft)}

/* footer ------------------------------------------------------------------ */
footer{border-top:2px solid var(--blue);margin-top:1rem;padding:2.2rem 0 3.4rem;font-family:"Inconsolata",monospace;font-stretch:84%;font-size:.79rem;line-height:1.7;color:var(--muted)}
footer a{color:var(--ink);border-bottom-color:var(--rule-mid)}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:1.6rem}
footer b{font-weight:400;color:var(--ink);display:block;text-transform:uppercase;letter-spacing:.13em;font-size:.66rem;margin-bottom:.4rem}
footer ul{list-style:none;margin:0;padding:0}
.skip{position:absolute;left:-9999px}
.skip:focus{position:static;display:inline-block;padding:.5rem}

/* mobile is its own layout ------------------------------------------------ */
@media (max-width:900px){
  .hero{grid-template-columns:minmax(0,1fr);gap:2rem;padding:2.6rem 0 2rem}
  .figs{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fig{border-bottom:1px solid var(--rule)}
  .fig:nth-child(2n){border-right:0}
  .cols{grid-template-columns:minmax(0,1fr)}
  .col{border-right:0;border-bottom:1px solid var(--rule);padding-right:0}
  .col:last-child{border-bottom:0}
}
@media (max-width:620px){
  body{font-size:18px;line-height:1.58}
  .wrap{padding:0 1.15rem}
  h1{font-size:clamp(2.05rem,9vw,2.7rem);max-width:none}
  .lead{font-size:1.08rem}
  section{padding:2.3rem 0}
  .figs{grid-template-columns:minmax(0,1fr)}
  .fig{border-right:0}
  .titleblock{max-width:none}
  nav.rail ul{gap:1.1rem}
  .h2row{gap:.6rem}
}