/* PHYSICS — first-principles teardown. Tokens come from brand.css;
   light/dark is handled entirely by that token remap + theme.js. No local colours. */

body.physics-doc{
  background:radial-gradient(120% 70% at 50% -8%, #1B1915 0%, #161410 50%, #0E0D09 100%) fixed;
  color:var(--shell);
  font-family:"Inter",system-ui,-apple-system,sans-serif;
  font-size:15px; line-height:1.62; -webkit-font-smoothing:antialiased;
}
[data-theme="light"] body.physics-doc{
  background:radial-gradient(120% 70% at 50% -8%, #FBF8F1 0%, #F3EDE3 50%, #EAE3D6 100%) fixed;
}
.physics-doc .wrap{max-width:1040px;margin:0 auto;padding:0 28px 120px}

/* ---- type ---------------------------------------------------------------- */
.physics-doc h1,.physics-doc h2,.physics-doc h3{color:var(--linen);font-weight:400;margin:0}
.physics-doc h1{font-family:"DM Serif Display",Georgia,serif;font-size:clamp(30px,5.2vw,52px);line-height:1.08;letter-spacing:-.015em}
.physics-doc h2{font-family:"DM Serif Display",Georgia,serif;font-size:clamp(23px,3.2vw,33px);line-height:1.16;letter-spacing:-.01em}
.physics-doc h3{font-family:"Inter",sans-serif;font-size:15px;font-weight:600;color:var(--linen)}
.physics-doc p{margin:0 0 15px}
.physics-doc strong{color:var(--linen);font-weight:600}
.physics-doc em{color:var(--linen);font-style:italic}
.kicker{font-family:"Inter",sans-serif;font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--bronze);margin:0 0 16px;font-weight:600}
/* Machine voice byline (canon: ☿ Tris + the model that made the page, smaller and lighter). Tokens only. */
.byline{font-family:"Inter",sans-serif;font-size:12px;letter-spacing:.06em;color:var(--muted);margin:-6px 0 18px;font-weight:500}
.byline .merc{color:var(--bronze);margin-right:2px}
.byline .who{color:var(--linen);font-weight:600}
.byline .model{font-size:10px;letter-spacing:.03em;font-weight:400;color:var(--muted)}
.lede{font-family:"Cormorant Garamond",Georgia,serif;font-size:clamp(19px,2.4vw,25px);line-height:1.5;color:var(--shell);max-width:70ch}
.note{font-size:13px;color:var(--muted);line-height:1.6}
.num{font-variant-numeric:tabular-nums}

/* ---- structure ----------------------------------------------------------- */
.hero{padding:74px 0 54px;border-bottom:1px solid var(--line)}
section.band{padding:62px 0;border-bottom:1px solid var(--line2)}
section.band:last-of-type{border-bottom:0}
.band > h2{max-width:26ch}
.band > .standfirst{max-width:74ch;margin-top:16px;color:var(--shell)}

/* ---- atom cards ---------------------------------------------------------- */
.atoms{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:1px;margin-top:34px;
  background:var(--line);border:1px solid var(--line);border-radius:3px;overflow:hidden}
.atom{background:var(--panel);padding:24px 22px 22px}
.atom .tag{font-family:"Inter",sans-serif;font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--bronze);font-weight:600;display:block;margin-bottom:9px}
.atom h3{margin-bottom:9px}
.atom p{font-size:13.5px;line-height:1.6;color:var(--muted);margin:0}
.atom p + p{margin-top:9px}

/* ---- mile blocks --------------------------------------------------------- */
.mile{border:1px solid var(--line);border-radius:3px;background:var(--panel);margin-top:22px;overflow:hidden}
.mile > header{display:flex;flex-wrap:wrap;align-items:baseline;gap:14px;padding:20px 24px 16px;border-bottom:1px solid var(--line2)}
.mile > header .id{font-family:"Inter",sans-serif;font-size:11px;letter-spacing:.2em;color:var(--bronze);font-weight:600;flex:none}
.mile > header h3{font-size:17px;flex:1 1 300px}
.verdict{font-family:"Inter",sans-serif;font-size:10px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;
  padding:4px 10px;border-radius:999px;border:1px solid currentColor;flex:none}
.verdict.soft{color:var(--bronze)}
.verdict.hard{color:var(--stone)}
.mile .body{padding:20px 24px 24px}
.mile .body p{font-size:14px}
.mile .body p:last-child{margin-bottom:0}

.gap{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line2);
  border:1px solid var(--line2);border-radius:3px;margin:0 0 18px}
.gap div{background:var(--panel);padding:13px 15px}
.gap .k{display:block;font-family:"Inter",sans-serif;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.gap .v{font-family:"Inter",sans-serif;font-size:19px;color:var(--linen);font-variant-numeric:tabular-nums;line-height:1.2;display:block}
.gap .v.acc{color:var(--bronze)}
.gap .sub{font-size:11.5px;color:var(--muted);margin-top:3px;line-height:1.4;display:block}

.test,.mnbox{margin-top:16px;padding:13px 16px;border-left:2px solid var(--bronze);
  background:color-mix(in srgb,var(--bronze) 7%,transparent);border-radius:0 3px 3px 0}
.test .k,.mnbox .k{display:block;font-family:"Inter",sans-serif;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--bronze);font-weight:600;margin-bottom:5px}
.test p,.mnbox p{font-size:13px;color:var(--shell);margin:0}
.mnbox{border-left-color:var(--stone);background:color-mix(in srgb,var(--stone) 9%,transparent)}
.mnbox .k{color:var(--stone)}

/* ---- tables -------------------------------------------------------------- */
.tablewrap{overflow-x:auto;margin-top:26px;border:1px solid var(--line);border-radius:3px}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:13.5px}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line2);vertical-align:top}
thead th{font-family:"Inter",sans-serif;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;background:var(--panel);border-bottom:1px solid var(--line)}
tbody tr:last-child td{border-bottom:0}
td.n{font-variant-numeric:tabular-nums;white-space:nowrap}
td.good{color:var(--bronze)}
tr.hi td{background:color-mix(in srgb,var(--bronze) 8%,transparent)}
td .src{display:block;font-size:11px;color:var(--muted);margin-top:4px}

/* ---- diagram ------------------------------------------------------------- */
figure{margin:32px 0 0}
figure svg{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:3px;background:var(--panel)}
figcaption{font-size:12.5px;color:var(--muted);margin-top:11px;line-height:1.6;max-width:76ch}
.svg-ink{fill:var(--linen)} .svg-mut{fill:var(--muted)} .svg-acc{fill:var(--bronze)}
.svg-line{stroke:var(--stone);fill:none} .svg-accline{stroke:var(--bronze);fill:none}
.svg-label{font-family:"Inter",sans-serif;font-size:11px}
.svg-small{font-family:"Inter",sans-serif;font-size:9.5px;letter-spacing:.1em;text-transform:uppercase}

/* ---- callouts ------------------------------------------------------------ */
.thesis{border:1px solid var(--bronze);border-radius:3px;padding:26px 28px;margin-top:34px;
  background:color-mix(in srgb,var(--bronze) 6%,transparent)}
.thesis p{font-family:"Cormorant Garamond",Georgia,serif;font-size:clamp(18px,2.1vw,22px);line-height:1.5;color:var(--linen);margin:0}
.thesis p + p{margin-top:13px}

ul.plain{margin:14px 0 0;padding-left:20px}
ul.plain li{margin-bottom:9px;font-size:14px}
ul.plain li::marker{color:var(--bronze)}

.foot{padding:44px 0 0;border-top:1px solid var(--line);margin-top:56px}
.foot h3{margin-bottom:12px}

@media (max-width:640px){
  .physics-doc .wrap{padding:0 18px 80px}
  .hero{padding:48px 0 38px}
  section.band{padding:44px 0}
  .mile > header{padding:16px 18px 14px}
  .mile .body{padding:16px 18px 20px}
}