/* ============================================================
   9-dey — shared styles
   House style: Georgia serif, hairline rules, monochrome, no fills.
   Colours live in :root. Shared by every page.
   ============================================================ */

:root{
  --ink:#1d1b16;      /* primary text + hairlines */
  --paper:#faf7f0;    /* page background */
  --faint:#5a554b;    /* secondary text (darkened for contrast) */
  --rule:#cfc8ba;     /* light dividers */
  --hover:rgba(0,0,0,.04);
  --measure:66ch;     /* comfortable line length for prose */
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:Georgia,"Times New Roman",serif;
  line-height:1.65;
  font-size:18px;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--ink);}

.wrap{max-width:1040px;margin:0 auto;padding:0 32px 110px;}

/* ---------------- shared top nav ---------------- */
.nav{
  max-width:1040px;margin:0 auto;padding:22px 32px 15px;
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;flex-wrap:wrap;
  border-bottom:1.5px solid var(--ink);
}
.brand{
  font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:var(--ink);
  text-decoration:none;font-weight:bold;
}
.links{display:flex;gap:24px;align-items:center;}
.links a{
  font-size:13.5px;letter-spacing:.04em;text-decoration:none;color:var(--faint);
  padding-bottom:2px;
}
.links a:hover{color:var(--ink);}
.links a.is-active{color:var(--ink);border-bottom:1px solid var(--ink);}

/* thesis dropdown (built on <details>) */
.thesis-dd{position:relative;}
.thesis-dd>summary{
  list-style:none;cursor:pointer;font-size:13.5px;letter-spacing:.04em;color:var(--ink);
  display:inline-flex;align-items:center;gap:6px;padding-bottom:2px;border-bottom:1px solid var(--ink);
}
.thesis-dd>summary::-webkit-details-marker{display:none;}
.thesis-dd>summary .caret{font-size:9px;transform:translateY(1px);}
.thesis-dd[open]>summary .caret{transform:translateY(1px) rotate(180deg);}
.thesis-dd-menu{
  position:absolute;top:150%;right:0;min-width:220px;
  background:var(--paper);border:1px solid var(--ink);padding:5px 0;z-index:30;
  box-shadow:0 6px 22px rgba(0,0,0,.10);
}
.thesis-dd-menu a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:8px 15px;font-size:13.5px;text-decoration:none;color:var(--faint);white-space:nowrap;
}
.thesis-dd-menu a:hover{color:var(--ink);background:var(--hover);}
.thesis-dd-menu a.is-current{color:var(--ink);}
.dd-tag{
  font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);
  border:1px solid var(--rule);padding:1px 6px;border-radius:2px;
}

/* ---------------- masthead ---------------- */
.masthead{padding-top:46px;margin-bottom:6px;}
.eyebrow{
  font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--faint);margin:0 0 14px;
}
h1{
  font-size:clamp(32px,5vw,46px);line-height:1.08;font-weight:normal;margin:0 0 16px;
  letter-spacing:-.015em;
}
.version{
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink);
  margin:0 0 4px;font-weight:bold;
}
.version-note{font-size:13px;color:var(--faint);font-style:italic;margin:0 0 22px;}
.standfirst{font-style:italic;font-size:19px;margin:0;max-width:60ch;color:var(--ink);}

/* hero thesis statement */
.hero{
  font-size:clamp(21px,2.6vw,27px);line-height:1.34;letter-spacing:-.01em;
  margin:30px 0 6px;max-width:30ch;max-width:34ch;
}
.hero strong{font-weight:bold;}

/* signature squiggle divider */
.squiggle{display:block;width:96px;height:12px;margin:30px 0;opacity:.6;}
.squiggle.center{margin-left:auto;margin-right:auto;}
.squiggle path{stroke:var(--ink);stroke-width:1;fill:none;}

/* ---------------- contents strip ---------------- */
.toc{
  display:flex;flex-wrap:wrap;gap:8px 22px;margin:26px 0 4px;
  padding:16px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
}
.toc a{
  font-size:13px;color:var(--faint);text-decoration:none;letter-spacing:.01em;
  display:inline-flex;gap:7px;align-items:baseline;
}
.toc a span{font-size:10px;letter-spacing:.12em;color:var(--ink);}
.toc a:hover{color:var(--ink);}

/* ---------------- sections ---------------- */
section{
  margin-top:46px;
  scroll-margin-top:20px;
}
/* thesis sections (those with a .snum) get the two-column number layout */
section:has(> .snum){
  display:grid;grid-template-columns:64px 1fr;gap:0 26px;
}
section>.snum{
  font-size:13px;letter-spacing:.12em;color:var(--faint);padding-top:7px;
}
section>.body{min-width:0;}
.sec-head{border-bottom:1px solid var(--rule);padding-bottom:9px;margin-bottom:20px;}
.sec-head h2{font-size:22px;font-weight:normal;margin:0;letter-spacing:-.005em;}
/* map.html uses .sec-head .num + h2 inline; keep that working */
.sec-head .num{font-size:12px;letter-spacing:.18em;color:var(--faint);margin-right:12px;}

p{margin:0 0 18px;max-width:var(--measure);}
.lede{font-size:19px;}
strong{font-weight:bold;}
em{font-style:italic;}

.pull{
  border-left:2px solid var(--ink);padding:4px 0 4px 22px;margin:26px 0;
  font-style:italic;font-size:21px;line-height:1.4;max-width:34ch;
}

/* text + diagram side by side */
.split{display:flex;gap:34px;align-items:flex-start;flex-wrap:wrap;}
.split>.txt{flex:1 1 320px;min-width:0;}
.split>.fig{flex:0 1 360px;align-self:center;}
.split>.txt p{max-width:none;}

/* inline diagrams */
.dia{width:100%;max-width:380px;height:auto;display:block;margin:6px auto;}
.dia text{font-family:Georgia,"Times New Roman",serif;fill:var(--ink);}
.dia .lab{font-size:11px;}
.dia .lab-sm{font-size:9.5px;fill:var(--faint);letter-spacing:.04em;}
.dia .lab-cap{font-size:10px;font-style:italic;fill:var(--faint);}
.dia .stroke{fill:none;stroke:var(--ink);stroke-width:1;}
.dia .stroke-faint{fill:none;stroke:var(--rule);stroke-width:1;}
.fig-cap{font-size:12px;color:var(--faint);font-style:italic;text-align:center;margin:8px 0 0;}

/* moat table */
.moat{width:100%;border-collapse:collapse;margin:6px 0 10px;}
.moat td{border-top:1px solid var(--rule);padding:12px 0;vertical-align:top;font-size:16px;}
.moat td:first-child{width:32%;font-style:italic;padding-right:18px;}

/* numbered lists (map.html) */
ol.principles,ol.kills{list-style:none;counter-reset:item;margin:0;padding:0;}
ol.principles>li,ol.kills>li{
  counter-increment:item;position:relative;padding:14px 0 14px 46px;border-top:1px solid var(--rule);
}
ol.principles>li:first-child,ol.kills>li:first-child{border-top:none;}
ol.principles>li::before,ol.kills>li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:14px;
  font-size:12px;letter-spacing:.1em;color:var(--faint);
}
.kills li b{font-variant:small-caps;letter-spacing:.03em;}

/* map figure */
figure{margin:8px 0 0;}
.map{width:100%;height:auto;display:block;}
figcaption{font-size:12.5px;color:var(--faint);margin-top:14px;font-style:italic;}
svg.map text{font-family:Georgia,"Times New Roman",serif;fill:var(--ink);}
.n-title{font-size:14.5px;}
.n-sub{font-size:11px;fill:var(--faint);}
.n-now{font-size:15px;letter-spacing:.02em;}
.n-found{font-size:16px;letter-spacing:.04em;}
.edge{font-size:11px;font-style:italic;fill:var(--faint);}
.band{font-size:12.5px;letter-spacing:.02em;}
.band-lab{font-size:10px;letter-spacing:.18em;fill:var(--faint);}

/* page foot */
.foot{
  margin-top:66px;border-top:1.5px solid var(--ink);padding-top:18px;
  font-size:13px;color:var(--faint);font-style:italic;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.foot a{text-decoration:none;font-style:normal;letter-spacing:.03em;}
.foot a:hover{color:var(--ink);}

/* ---------------- responsive ---------------- */
@media (max-width:680px){
  body{font-size:16.5px;}
  .wrap{padding:0 22px 80px;}
  .nav{padding:18px 22px 13px;}
  section:has(> .snum){grid-template-columns:1fr;gap:0;}
  section>.snum{padding-top:0;margin-bottom:4px;}
  .thesis-dd-menu{right:auto;left:0;}
}
@media print{
  body{background:#fff;}
  .nav .links,.toc{display:none;}
  .wrap{max-width:none;padding:0;}
  section{break-inside:avoid;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
}