/* ============================================================================
   Dossier — shared shell for the standalone pages (about / privacy / changelog).
   Tokens, nav, footer, and prose lifted from index.html so these pages match the
   home page exactly. Content pages are static — no reveal/JS needed.
   ========================================================================== */
:root{
  --canvas:#f7f3eb; --surface:#fcfaf4; --line:#e8e2d5; --ink:#322e27; --muted:#6e665b;
  --chip:#efeadf;
  --brown:#6b5844; --brown-dark:#5b4a3a;       /* walnut */
  --green:#5e7257; --green-dark:#4f6149;        /* sage */
  --font-display:"Fraunces",Georgia,"Times New Roman",serif;
  --font-sans:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --r-md:.375rem;
  --ease-out:cubic-bezier(0,0,.2,1);
  --maxw:72rem;
}
*,*::before,*::after{box-sizing:border-box}
html{font-size:17px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:var(--font-sans);font-weight:400;
  line-height:1.6;font-feature-settings:"ss01","cv05";-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p{margin:0}
img,svg{display:block}
::selection{background:color-mix(in oklab,var(--green) 22%,transparent);color:var(--ink)}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:var(--r-md)}
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:1.6rem}

.display{font-family:var(--font-display);font-weight:400;line-height:1.05;letter-spacing:-.018em;
  font-optical-sizing:auto;color:var(--ink)}
.ital{font-style:italic}
.eyebrow{font-family:var(--font-sans);font-size:.72rem;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted)}
.eyebrow--sage{color:var(--green-dark)}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-sans);font-weight:500;
  font-size:.95rem;line-height:1;padding:.78rem 1.2rem;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:background .18s var(--ease-out),border-color .18s var(--ease-out),
  color .18s var(--ease-out),transform .18s var(--ease-out);white-space:nowrap}
.btn--accent{background:var(--brown);color:#fff}
.btn--accent:hover{background:var(--brown-dark);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--brown);color:var(--brown)}
.btn--sm{padding:.55rem .95rem;font-size:.86rem}

/* ---- nav (static; a permanent hairline since there's no hero behind it) ---- */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in oklab,var(--canvas) 86%,transparent);
  backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.nav__inner{display:flex;align-items:center;gap:1.5rem;height:4.4rem}
.nav__brand{display:flex;align-items:center}
.nav__brand .word{height:2.3rem;width:auto;display:block}
.nav__links{display:flex;gap:1.6rem;margin-left:1rem}
.nav__links a{font-size:.92rem;color:var(--muted);white-space:nowrap;transition:color .15s}
.nav__links a:hover{color:var(--ink)}
.nav__cta{margin-left:auto;display:flex;gap:.6rem;align-items:center}
@media (max-width:1040px){.nav__cta .btn--ghost{display:none}}
@media (max-width:880px){.nav__links{display:none}}
@media (max-width:480px){
  .container{padding-inline:1.1rem}
  .nav__inner{gap:.6rem;height:4rem}
  .nav__brand .word{height:1.95rem}
  .nav__cta .btn{padding:.5rem .85rem;font-size:.82rem}
  .nav-suffix{display:none}
}
@media (pointer:coarse){
  .btn{min-height:44px}
  .footer__grid li a{display:inline-flex;align-items:center;min-height:40px}
  .nav__brand{min-height:44px}
}

/* ---- THE DOCUMENT — a page filed in the Dossier. A left "filing margin" rail (a manila tab +
   record-style filing data, plus a contents list on long pages) sets the case-file frame; the main
   column is editorial prose. The one bold move is the filing rail; everything else stays quiet. ---- */
.doc{display:grid;grid-template-columns:12.5rem minmax(0,43rem);justify-content:center;gap:3.4rem;
  align-items:start;padding:4.5rem 0 4rem}
.doc__main{min-width:0}

/* the filing margin */
.doc__rail{position:sticky;top:6rem;align-self:start;font-family:var(--font-sans);padding-top:.45rem}
.filetab{display:inline-block;font-family:var(--font-mono);font-size:.64rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brown);background:var(--chip);
  border:1px solid color-mix(in oklab,var(--brown) 22%,var(--line));border-bottom-width:2px;
  border-radius:.45rem .45rem 0 0;padding:.34rem .62rem}
.filemeta{margin-top:.95rem;display:flex;flex-direction:column;gap:.42rem;font-family:var(--font-mono);
  font-size:.7rem;color:var(--muted);font-variant-numeric:tabular-nums;line-height:1.3}
.filemeta b{color:var(--ink);font-weight:600}
.toc{margin-top:1.5rem;border-top:1px solid var(--line);padding-top:1.1rem;display:flex;flex-direction:column;gap:.55rem}
.toc__h{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:600;margin-bottom:.15rem}
.toc a{font-size:.84rem;color:var(--muted);transition:color .15s}
.toc a:hover{color:var(--brown)}

/* header + prose */
.doc__head{margin-bottom:2.2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--line)}
.doc__head h1{font-size:clamp(2.2rem,4.4vw,3.1rem)}
.doc__lede{font-size:clamp(1.08rem,1.6vw,1.26rem);line-height:1.55;color:var(--muted);margin-top:1.1rem;max-width:48ch}
.doc__body h2{font-family:var(--font-display);font-weight:600;font-size:1.42rem;letter-spacing:-.01em;color:var(--ink);
  margin:2.5rem 0 .6rem;scroll-margin-top:5.5rem}
.doc__body h2:first-child{margin-top:0}
.doc__body h3{font-family:var(--font-sans);font-weight:600;font-size:1.02rem;color:var(--ink);margin:1.6rem 0 .3rem}
.doc__body p{margin:.8rem 0;color:#403b33;max-width:62ch}
.doc__body ul{margin:.7rem 0 1rem;padding-left:1.15rem}
.doc__body li{margin:.42rem 0;color:#403b33;max-width:60ch}
.doc__body li::marker{color:var(--brown)}
.doc__body a:not(.btn),.doc__note a{color:var(--green-dark);text-decoration:underline;text-underline-offset:2px;
  text-decoration-color:color-mix(in oklab,var(--green) 45%,transparent)}
.doc__body a:not(.btn):hover,.doc__note a:hover{text-decoration-color:var(--green-dark)}
.doc__body strong{font-weight:600;color:var(--ink)}
.doc__body hr{border:none;border-top:1px solid var(--line);margin:2.2rem 0}
.doc__meta{font-family:var(--font-mono);font-size:.73rem;color:var(--muted);margin-top:1.8rem;line-height:1.5;max-width:60ch}
.doc__note{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--line);color:#403b33;font-size:.95rem}
.doc__back{display:inline-flex;align-items:center;gap:.4rem;font-size:.86rem;color:var(--muted);margin-top:2.8rem}
.doc__back:hover{color:var(--brown)}

/* changelog as a connected timeline */
.timeline{position:relative;padding-left:1.7rem}
.timeline::before{content:"";position:absolute;left:.32rem;top:.5rem;bottom:.6rem;width:1px;
  background:linear-gradient(var(--line),color-mix(in oklab,var(--line) 25%,transparent))}
.tl{position:relative;padding-bottom:2rem}
.tl:last-child{padding-bottom:.2rem}
.tl::before{content:"";position:absolute;left:-1.55rem;top:.3rem;width:.62rem;height:.62rem;border-radius:999px;
  background:var(--green);border:2px solid var(--canvas);box-shadow:0 0 0 3px color-mix(in oklab,var(--green) 15%,transparent)}
.tl__date{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--green-dark);font-weight:600}
.tl__h{font-family:var(--font-display);font-weight:600;font-size:1.2rem;color:var(--ink);margin:.2rem 0 .4rem}
.tl p{margin:0;color:#403b33;max-width:60ch}

/* fold the rail into a top strip on narrow screens; drop the desktop-only contents list */
@media (max-width:880px){
  .doc{grid-template-columns:minmax(0,43rem);gap:0;padding-top:3.2rem}
  .doc__rail{position:static;top:auto;margin-bottom:1.7rem;display:flex;align-items:baseline;gap:1rem;flex-wrap:wrap}
  .filemeta{flex-direction:row;gap:1rem;margin-top:0}
  .toc{display:none}
}
/* a quiet filed-in entrance on load (respects reduced motion) */
@media (prefers-reduced-motion:no-preference){
  .doc__rail{animation:doc-rise .55s var(--ease-out) both}
  .doc__head{animation:doc-rise .55s var(--ease-out) .06s both}
  .doc__body,.timeline,.doc__note{animation:doc-rise .55s var(--ease-out) .12s both}
}
@keyframes doc-rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---- footer (matches index) ---- */
.footer{border-top:1px solid var(--line);padding:3.5rem 0 2.5rem;background:var(--surface)}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:2rem}
@media (max-width:720px){.footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer__grid>div:first-child{grid-column:1/-1}}
.footer__word{height:2.15rem;width:auto;display:block;margin-bottom:1.1rem}
.footer p{margin-top:1rem;max-width:28ch;font-size:.92rem;color:var(--muted)}
.footer h4{font-family:var(--font-sans);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:.9rem}
.footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.55rem}
.footer ul a{font-size:.92rem;color:var(--ink);opacity:.8;transition:opacity .15s}
.footer ul a:hover{opacity:1;color:var(--brown)}
.footer__bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:3rem;padding-top:1.5rem;
  border-top:1px solid var(--line);font-family:var(--font-sans);font-size:.72rem;color:var(--muted)}