/* iteutyouso.com
   Palette sampled from the book cover: teal #6BB1BD on paper #F6F7F7.
   Three faces, three jobs: Archivo for headlines, Source Serif for reading,
   IBM Plex Mono for anything that is a number, a date or a label. */

:root{
  --paper:#F6F7F7; --surface:#FFFFFF; --ink:#16191B; --ink-soft:#394144;
  --teal:#6BB1BD; --teal-deep:#2A6B78; --teal-wash:#E8F1F3;
  --muted:#64716F; --rule:#DCE1E1;
  --display:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  --body:"Source Serif 4",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --measure:34rem;
  --pad:clamp(1.1rem,4vw,2.5rem);
}
@media (prefers-color-scheme:dark){
  :root{
    --paper:#101415; --surface:#171C1E; --ink:#E9EEEE; --ink-soft:#BAC4C4;
    --teal:#6BB1BD; --teal-deep:#93CBD5; --teal-wash:#17282C;
    --muted:#8C9A99; --rule:#283032;
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--body); font-size:1.0625rem; line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.dsp{
  font-family:var(--display); font-weight:800; line-height:1.08;
  letter-spacing:-.021em; text-wrap:balance; margin:0;
}
a{color:var(--teal-deep)}
a:hover{color:var(--ink)}
img{max-width:100%;height:auto}
:focus-visible{outline:2px solid var(--teal-deep);outline-offset:3px;border-radius:2px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}
.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--pad);top:.5rem;z-index:50;background:var(--surface);
  padding:.5rem .8rem;border:1px solid var(--rule)}

/* ---------- chrome ---------- */
.bar{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--rule);
  background:var(--paper)}
@supports (backdrop-filter:blur(8px)){
  .bar{background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(8px)}
}
.bar-in{max-width:66rem;margin:0 auto;padding:.7rem var(--pad);
  display:flex;align-items:baseline;gap:1.5rem;flex-wrap:wrap}
.mark{font-family:var(--display);font-weight:800;font-size:1.5rem;letter-spacing:-.04em;
  color:var(--teal);text-decoration:none}
.mark span{color:var(--ink);font-size:.9rem;font-weight:600;letter-spacing:.01em;margin-left:.5rem}
.nav{margin-left:auto;display:flex;gap:.25rem;flex-wrap:wrap}
.nav a{font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--muted);padding:.45rem .6rem;border-radius:3px;text-decoration:none}
.nav a:hover{color:var(--ink);background:var(--teal-wash)}
.nav a[aria-current]{color:var(--teal-deep);background:var(--teal-wash)}

main{max-width:66rem;margin:0 auto;padding:0 var(--pad) 5rem;display:block}

/* metadata in the margin, like notes on a proof */
.rail{display:grid;grid-template-columns:1fr;gap:.6rem 2.2rem}
@media (min-width:60rem){.rail{grid-template-columns:7.5rem minmax(0,var(--measure))}}
.rail-k{font-family:var(--mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);padding-top:.42rem}
.measure{max-width:var(--measure)}

.srule{display:flex;align-items:center;gap:.9rem;margin:3.4rem 0 1.5rem}
.srule::after{content:"";flex:1;height:1px;background:var(--rule)}
.srule b{font-family:var(--mono);font-weight:600;font-size:.7rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--teal-deep)}

.page-h{font-size:clamp(1.9rem,5vw,2.7rem);max-width:var(--measure)}
.sub{margin:1.15rem 0 0;color:var(--ink-soft);font-size:1.14rem;max-width:30rem}

/* ---------- hero ---------- */
.hero{display:grid;gap:2.6rem;padding:3.4rem 0 .5rem;align-items:start}
@media (min-width:52rem){.hero{grid-template-columns:minmax(0,1fr) 15.5rem}}
.thesis{font-size:clamp(2.2rem,6.2vw,3.5rem)}
.thesis em{font-style:normal;color:var(--teal-deep)}
.cover{width:100%;border-radius:2px;display:block;
  box-shadow:0 1px 2px rgba(0,0,0,.14),0 14px 34px -14px rgba(0,0,0,.34)}
/* the cover doubles as the jump to the buy links */
.cover-link{display:block;position:relative;text-decoration:none;
  transition:transform .18s ease}
.cover-link:hover{transform:translateY(-2px)}
.cover-link:hover .cover{box-shadow:0 1px 2px rgba(0,0,0,.16),0 20px 40px -14px rgba(0,0,0,.42)}
.cover-cue{position:absolute;left:50%;bottom:.7rem;transform:translateX(-50%);
  font-family:var(--mono);font-size:.66rem;letter-spacing:.07em;text-transform:uppercase;
  background:var(--teal-deep);color:#fff;padding:.4rem .7rem;border-radius:2px;
  white-space:nowrap;opacity:0;transition:opacity .18s ease}
.cover-link:hover .cover-cue,.cover-link:focus-visible .cover-cue{opacity:1}
@media (prefers-color-scheme:dark){.cover-cue{color:#0E1516}}
/* sticky header would otherwise cover the target heading */
#read-it{scroll-margin-top:5.5rem}
.quote{margin:2rem 0 0;padding-left:1rem;border-left:2px solid var(--teal);max-width:30rem}
.quote p{margin:0;font-size:1.05rem}
.quote cite{display:block;margin-top:.5rem;font-family:var(--mono);font-size:.72rem;
  letter-spacing:.05em;color:var(--muted);font-style:normal}

/* ---------- figures ---------- */
.figs{display:grid;grid-template-columns:repeat(auto-fit,minmax(7rem,1fr));gap:1px;
  background:var(--rule);border:1px solid var(--rule);margin:2.4rem 0 0}
.fig{background:var(--paper);padding:1rem 1.1rem}
.fig b{display:block;font-family:var(--mono);font-weight:600;font-size:1.5rem;
  color:var(--teal-deep);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.fig span{display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.07em;
  text-transform:uppercase;color:var(--muted);margin-top:.3rem}

/* ---------- lists ---------- */
.toc{list-style:none;margin:0;padding:0;max-width:var(--measure)}
.toc li{display:flex;gap:1rem;padding:.5rem 0;border-bottom:1px solid var(--rule)}
.toc i{font-family:var(--mono);font-style:normal;font-size:.78rem;color:var(--muted);
  min-width:2.1rem;padding-top:.18rem;font-variant-numeric:tabular-nums}

.buys{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);max-width:var(--measure)}
.buy{background:var(--surface);padding:.95rem 1.1rem;display:flex;align-items:center;gap:1rem;
  text-decoration:none;color:inherit}
.buy:hover{background:var(--teal-wash)}
.buy b{font-family:var(--display);font-weight:700;font-size:.95rem;display:block}
.buy s{font-family:var(--mono);font-size:.68rem;color:var(--muted);text-decoration:none;
  letter-spacing:.04em;display:block;margin-top:.15rem}
.buy .go{margin-left:auto;font-family:var(--mono);font-size:.72rem;color:var(--teal-deep)}
/* an edition without a shop link is a statement, not a control */
.buy-soon{cursor:default}
.buy-soon:hover{background:var(--surface)}
.buy .go.soon{color:var(--muted);white-space:nowrap;text-transform:uppercase;
  letter-spacing:.06em;font-size:.66rem}

/* ---------- writing ---------- */
.posts{max-width:var(--measure);margin-top:2.2rem}
.post{display:block;text-decoration:none;color:inherit;padding:1.35rem 0;
  border-bottom:1px solid var(--rule)}
.post:hover h2{color:var(--teal-deep)}
.post h2{font-size:1.32rem;font-weight:700;margin-bottom:.3rem}
.post p{margin:0;color:var(--ink-soft);font-size:1rem}
.pmeta{font-family:var(--mono);font-size:.68rem;letter-spacing:.07em;text-transform:uppercase;
  color:var(--muted);margin-bottom:.45rem;display:flex;gap:.8rem;flex-wrap:wrap}
.tag{color:var(--teal-deep)}

article{max-width:var(--measure)}
article p,article ul,article ol,article blockquote{max-width:var(--measure)}
article h2{font-size:1.35rem;margin:2.2rem 0 .7rem}
article h3{font-size:1.12rem;margin:1.8rem 0 .5rem}
article img{border-radius:2px;margin:1.6rem 0}
article blockquote{margin:1.6rem 0;padding-left:1rem;border-left:2px solid var(--teal);
  color:var(--ink-soft)}
article hr{border:0;border-top:1px solid var(--rule);margin:2.4rem 0}
article code{font-family:var(--mono);font-size:.9em;background:var(--teal-wash);
  padding:.12em .35em;border-radius:2px}
.lede,
article > p:first-of-type{font-size:1.2rem;color:var(--ink-soft)}
.pull{font-family:var(--display);font-weight:700;font-size:1.5rem;line-height:1.24;
  color:var(--teal-deep);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
  padding:1.4rem 0;margin:2.2rem 0}
.back{display:inline-block;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--muted);text-decoration:none;margin:2.6rem 0 1.2rem}
.back:hover{color:var(--teal-deep)}

/* ---------- poster ---------- */
.grab{display:grid;gap:2.4rem;align-items:start;margin-top:2.6rem}
@media (min-width:54rem){.grab{grid-template-columns:minmax(0,1fr) 17rem}}
.sheet{border:1px solid var(--rule);background:var(--surface);padding:1.4rem 1.5rem;border-radius:2px}
.sheet h2{font-family:var(--mono);font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--muted);margin:0 0 .9rem;font-weight:600}
.sheet ol{margin:0;padding-left:1.3rem;font-size:.92rem;color:var(--ink-soft)}
.sheet li{margin-bottom:.55rem}
.sheet li b{font-family:var(--display);font-size:.9rem;color:var(--ink)}
form.grabform{display:flex;gap:.5rem;flex-wrap:wrap;margin:1.5rem 0 .6rem;max-width:var(--measure)}
input[type=email]{flex:1 1 15rem;font-family:var(--body);font-size:1rem;padding:.72rem .85rem;
  border:1px solid var(--rule);background:var(--surface);color:var(--ink);border-radius:2px}
input[type=email]::placeholder{color:var(--muted)}
.cta{font-family:var(--display);font-weight:700;font-size:.95rem;padding:.72rem 1.4rem;
  border:0;border-radius:2px;background:var(--teal-deep);color:#fff;cursor:pointer}
.cta:hover{filter:brightness(1.08)}
a.cta{display:inline-block;text-decoration:none}
/* in dark mode --teal-deep is a light tint, so white type on it fails contrast */
@media (prefers-color-scheme:dark){.cta{color:#0E1516}}
.getit{margin:1.6rem 0 .6rem}
.fine{font-family:var(--mono);font-size:.68rem;color:var(--muted);letter-spacing:.02em;
  max-width:var(--measure)}
.note{background:var(--teal-wash);border-left:2px solid var(--teal);padding:.85rem 1rem;
  font-size:.92rem;color:var(--ink-soft);max-width:var(--measure);margin:1.4rem 0}

/* ---------- legal pages ---------- */
.legal{max-width:var(--measure)}
.legal h2{font-size:1.15rem;margin:2rem 0 .5rem}
.legal p{margin:.5rem 0}
.legal address{font-style:normal;font-family:var(--mono);font-size:.9rem;line-height:1.75}

footer{border-top:1px solid var(--rule);margin-top:4rem}
.foot{max-width:66rem;margin:0 auto;padding:1.6rem var(--pad) 3rem;display:flex;gap:1.4rem;
  flex-wrap:wrap;font-family:var(--mono);font-size:.7rem;letter-spacing:.05em;color:var(--muted)}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--teal-deep)}