/* Ø Models reader — one stylesheet for every book and chapter. Colours and face are the site's. */
:root{--bg:#ffffff;--surface:#f3f3ed;--ink:#1a1a1a;--ink-2:#4a4a4a;--mute:#4a4a4a;--rule:#d5d5d0;--accent:#8B6914;--accent-ink:#6f5310;--bk:#111;--g1:#f3f3ed;--g3:#d5d5d0;--g5:#4a4a4a;--edge:#8a8a8a}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:18px;line-height:1.65;padding:0}
.c{max-width:760px;margin:0 auto;padding:3rem 1.5rem 4rem}
@media (max-width:600px){.c{padding:2rem 1rem 3rem}}
a{color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.strap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem 1rem;padding-block:1rem;border-bottom:1px solid var(--rule);font-size:1rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2)}
.strap .book a{text-decoration:none;color:var(--ink)}
.modes{display:flex;flex-wrap:wrap;gap:.4rem;margin:0;padding:0;list-style:none}
.modes a,.modes span{display:inline-block;white-space:nowrap;padding:.3rem .7rem;border:1px solid var(--rule);border-radius:2px;text-decoration:none;color:var(--ink-2)}
.modes .on{border-color:var(--accent);color:var(--accent-ink)}
.eyebrow{font-size:1rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink);margin:1.6rem 0 .5rem}
h1{font-weight:700;font-size:clamp(1.8rem,5.5vw,2.5rem);line-height:1.12;letter-spacing:-.01em;margin:0 0 1.2rem;text-wrap:balance}
h1.bt{font-size:clamp(2.4rem,8vw,3.2rem)}
.oneline{font-size:1.25rem;line-height:1.4;font-style:italic;color:var(--ink);border-left:2px solid var(--accent);padding-left:1rem;margin:0 0 1.2rem}
.edition{font-size:1rem;color:var(--ink-2);margin:0 0 2rem}
.opening{margin:0 0 .6rem}
.opening h2,h2.lh{font-weight:700;font-size:1.15rem;margin:0 0 .6rem}
h2.lh{margin:2.4rem 0 .8rem}
h3{font-weight:700;font-size:1rem;margin:1.2rem 0 .4rem}
p{margin:0 0 1rem;max-width:65ch}
details.sec{border-top:1px solid var(--rule)}
details.sec:last-of-type{border-bottom:1px solid var(--rule)}
details.sec summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:.7rem;padding:.9rem 0;font-size:1.15rem;font-weight:700;color:var(--ink)}
details.sec summary::-webkit-details-marker{display:none}
.tri{display:inline-block;width:1rem;color:var(--accent);font-size:1rem;line-height:1;transition:transform .18s ease;flex:none;transform-origin:40% 50%}
.tri::before{content:"\25B8"}
details[open]>summary .tri{transform:rotate(90deg)}
@media (prefers-reduced-motion:reduce){.tri{transition:none}}
.sec-body{padding:.2rem 0 1rem 1.2rem}
.count{margin-left:auto;font-size:1rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);font-weight:400}
details.die summary{color:var(--accent-ink)}
.coda{margin:1.4rem 0 0}
.ks{padding-left:7rem;text-indent:-7rem}
.ks-id{display:inline-block;width:7rem;text-indent:0;font-size:1rem;letter-spacing:.04em;text-decoration:none;color:var(--accent-ink);font-variant-numeric:tabular-nums}
.ks-id:hover{text-decoration:underline}
.reg{font-size:1rem;color:var(--mute)}
.tools{display:flex;gap:1.2rem;justify-content:flex-start;padding:0 0 .8rem;font-size:1rem;letter-spacing:.06em;text-transform:uppercase}
.tools button{background:none;border:0;color:var(--ink-2);font:inherit;cursor:pointer;padding:0;letter-spacing:inherit;text-transform:inherit}
.tools button:hover{color:var(--accent-ink)}
.source{margin:1.6rem 0 0;font-size:1rem;color:var(--mute);font-style:italic}
.source a{color:inherit}
nav.pn{display:grid;grid-template-columns:1fr auto 1fr;gap:1.2rem 1.5rem;align-items:start;margin-top:2.4rem;padding-top:1rem;border-top:1px solid var(--rule);font-size:1rem}
nav.pn a{text-decoration:none}
nav.pn a.p{grid-column:1}
nav.pn .up{grid-column:2;text-align:center}
nav.pn .up a{display:block}
nav.pn a.r{grid-column:3;text-align:right}
@media (max-width:600px){nav.pn{grid-template-columns:1fr 1fr}nav.pn a.r{grid-column:2}nav.pn .up{grid-column:1/-1;grid-row:2}nav.pn.solo .up{grid-row:1}}
nav.pn small{display:block;font-size:1rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mute)}
details.toc{margin:1.2rem 0 0;font-size:1rem}
details.toc summary{cursor:pointer;color:var(--ink-2);letter-spacing:.06em;text-transform:uppercase;font-size:1rem}
details.toc ol{list-style:none;margin:.6rem 0 0;padding:0;columns:2;column-gap:2rem}
details.toc li{display:flex;gap:.6rem;padding:.2rem 0;break-inside:avoid;color:var(--ink-2)}
details.toc li a{color:inherit;text-decoration:none}
details.toc li.here a{color:var(--accent-ink)}
details.toc .num{width:6.2rem;color:var(--mute);flex:none;font-size:1rem;letter-spacing:.06em;text-transform:uppercase;padding-top:.15rem}
ol.chapters{list-style:none;margin:0;padding:0}
ol.chapters li{border-top:1px solid var(--rule)}
ol.chapters li:last-child{border-bottom:1px solid var(--rule)}
ol.chapters a{display:grid;grid-template-columns:6.8rem 1fr;gap:.2rem 1rem;padding:1rem 0;text-decoration:none;color:var(--ink)}
ol.chapters .num{grid-row:span 2;font-size:1rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);padding-top:.35rem}
ol.chapters .q{font-size:1.2rem;font-weight:700;line-height:1.2}
ol.chapters .line{font-size:1rem;color:var(--ink-2);font-style:italic}
ol.chapters a:hover .q{color:var(--accent-ink)}
.ep{margin:1.2rem 0}
.ep a{font-size:1.1rem;font-weight:700;text-decoration:none}
footer.colophon{margin-top:3rem;font-size:1rem;color:var(--mute);letter-spacing:.03em}
footer.colophon a{color:var(--ink-2);text-decoration:none}
footer.colophon .editions{font-size:1rem;color:var(--ink);border-top:1px solid var(--rule);padding-top:1rem;margin-bottom:.8rem}
footer.colophon .editions a{color:var(--accent-ink);text-decoration:underline}
/* The site's footer, as on every page of the420code.org. Measured on /models/, 22 September 2026. */
.constraint{margin:2rem 0;padding:1.5rem 0;color:#1a1a1a}
.constraint p{font-size:16px;line-height:1.65;margin:0 0 .25rem;max-width:none}
.oneness{font-size:19px;font-weight:700;text-align:center;line-height:1.5;margin:3.5rem 0 1rem;max-width:none;color:#1a1a1a}
.footer{margin:4rem 0 0;padding:2rem 0 0;font-size:16px;line-height:1.65;color:#4a4a4a;border-top:1px solid #e8e8e8}
.footer p{margin:0 0 .25rem;max-width:none}
@media (max-width:700px){.oneness{font-size:18px}}
@media (max-width:520px){details.toc ol{columns:1}.ks{padding-left:0;text-indent:0}.ks-id{display:block;width:auto}ol.chapters a{grid-template-columns:1fr}ol.chapters .num{grid-row:auto}}
/* ── the header's base, as the home page has it ── */
.nav{position:sticky;top:0;background:rgba(255,255,255,0.95);backdrop-filter:blur(8px);z-index:100;display:flex;flex-wrap:wrap;gap:1.5rem;align-items:center;padding:.7rem 0;border-bottom:1px solid var(--g3);margin:0 0 3rem;line-height:1.65}
html{scroll-padding-top:86px}
@media(max-width:640px){html{scroll-padding-top:126px}}
.nav a:not(.nav-title){font-size:16px;color:var(--g5);text-decoration:none}
.nav a:not(.nav-title):hover{color:var(--bk);text-decoration:underline}
@media(max-width:600px){.nav{gap:.75rem;padding:.75rem 0}}
.nav a.nav-door{font-weight:700;color:#1a1a1a}
.nav a.nav-door:hover{color:#8B6914}
/* ── end of the header's base ── */
/* ── the header: one row, with the rooms and the languages behind two drop-downs ── */
.nav{position:sticky;top:0;z-index:100;overflow:visible;flex-wrap:nowrap}
.nav a.nav-room{display:none}
/* one row at every width: the logo and the buttons keep their size; the door's name wraps
   inside its own box instead, never splitting The 420 Code, never pushing a button down */
.nav-logo,.nav-toggle,.nav-flag{flex-shrink:0}
.nav a.nav-door{min-width:0;word-break:keep-all}
.nav .nw{white-space:nowrap}
.nav-toggle,.nav-flag{display:inline-flex;align-items:center;gap:.45rem;
  background:none;border:1px solid var(--edge);border-radius:3px;font-family:inherit;
  font-size:16px;font-weight:700;color:#1a1a1a;padding:5px 11px;cursor:pointer;line-height:1.2}
.nav-toggle{margin-left:auto}
/* the flag button is exactly as tall as Rooms: one 14px line, 10px padding, 2px border */
.nav-flag{height:calc(1.2em + 12px)}
.nav-flag img{display:block;width:20px;height:15px;border-radius:2px}
.nav-toggle:hover,.nav-flag:hover{border-color:#8B6914;color:#8B6914}
.nav-toggle::after,.nav-flag::after{content:"";display:inline-block;width:0;height:0;
  border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid currentColor;transition:transform .15s}
.nav.open .nav-toggle,.nav.lang-open .nav-flag{border-color:#8B6914;color:#8B6914}
.nav.open .nav-toggle::after,.nav.lang-open .nav-flag::after{transform:rotate(180deg)}
.nav-menu,.nav-langs{display:none;position:absolute;top:100%;right:0;min-width:270px;max-width:min(92vw,340px);
  background:#fff;border:1px solid var(--edge);border-top:none;border-radius:0 0 4px 4px;
  box-shadow:0 8px 24px rgba(0,0,0,.10);padding:.65rem 0 .5rem;z-index:200}
.nav.open .nav-menu,.nav.lang-open .nav-langs{display:block}
.nav.open .nav-menu a.nav-room,.nav.lang-open .nav-langs a.nav-lang{display:block;padding:.42rem 1.15rem;font-size:16px;
  text-decoration:none;color:#1a1a1a;white-space:nowrap}
.nav.lang-open .nav-langs a.nav-lang{display:flex;align-items:center;gap:.7rem}
.nav-langs a.nav-lang img{width:20px;height:15px;border-radius:2px;flex-shrink:0}
.nav.open .nav-menu a.nav-room:hover,.nav.lang-open .nav-langs a.nav-lang:hover{background:var(--g1);color:#8B6914}
.nav.lang-open .nav-langs a.nav-lang[aria-current]{font-weight:700;color:#8B6914}
/* the search, in the header: one field, and the whole work answers (G, 22 September 2026) */
.vh{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.nav-search{position:relative;flex:1 1 170px;min-width:0;max-width:340px;margin:0}
.nav-q{width:100%;font-family:inherit;font-size:16px;line-height:1.2;color:#1a1a1a;background:#fff;
  border:1px solid var(--edge);border-radius:3px;padding:6px 11px;-webkit-appearance:none;appearance:none}
.nav-q::placeholder{color:var(--g5);opacity:1}
.nav-q:focus{outline:none;border-color:#8B6914}
.nav-search-btn{display:none;align-items:center;background:none;border:1px solid var(--edge);border-radius:3px;
  color:#1a1a1a;padding:6px 9px;cursor:pointer;line-height:1;flex-shrink:0}
.nav-search-btn:hover,.nav.search-open .nav-search-btn{border-color:#8B6914;color:#8B6914}
.nav-results{display:none;position:absolute;top:calc(100% + 6px);left:0;right:0;max-height:min(70vh,560px);
  overflow-y:auto;background:#fff;border:1px solid var(--edge);border-radius:0 0 4px 4px;
  box-shadow:0 8px 24px rgba(0,0,0,.10);z-index:200;text-align:left}
.nav-results.on{display:block}
.nav .nav-results a{display:block;padding:.6rem 1rem;border-bottom:1px solid var(--g2);
  text-decoration:none;color:#1a1a1a;font-size:16px;line-height:1.45}
.nav .nav-results a:last-child{border-bottom:0}
.nav .nav-results a:hover,.nav .nav-results a.on{background:var(--g1);text-decoration:none}
.nr-t{display:block;font-weight:700}
.nr-k{display:block;color:var(--g5)}
.nr-s{display:block;color:var(--g5);margin-top:.1rem}
.nav-results mark{background:none;color:#8B6914;font-weight:700}
.nr-note{margin:0;padding:.7rem 1rem;font-size:16px;color:var(--g5)}
@media(max-width:400px){.nav{gap:.6rem}}
/* on a small phone the work's name takes the first row and the three buttons the second, so the
   name is never squeezed to a column of letters by the magnifier beside it */
@media(max-width:470px){.nav{flex-wrap:wrap;row-gap:.5rem}.nav a.nav-door{flex:1 0 calc(100% - 4rem)}
  .nav-search-btn{margin-left:auto}.nav-toggle{margin-left:0}}
@media(max-width:359px){.nav .nw{white-space:normal}}
@media(max-width:700px){
  .nav-menu,.nav-langs{left:0;right:0;max-width:none;border-radius:0}
  .nav-search{display:none;position:absolute;top:100%;left:0;right:0;max-width:none;background:#fff;
    border-bottom:1px solid var(--g3);padding:.65rem 0 .8rem}
  .nav.search-open .nav-search{display:block}
  .nav-search-btn{display:inline-flex}
  .nav-results{position:static;border:0;box-shadow:none;margin-top:.55rem;max-height:min(60vh,420px)}
  .nav a.nav-door{line-height:1.25}
  .nav a.nav-door{font-size:16px}
}