/* =====================================================================
   MatterGPT_RL — build-log 2026-07-19
   Self-contained. No external fonts / CDNs / scripts.
   Adapted from 2026-07-12/style.css to keep the house visual identity.
   Palette: theme-aware · one accent (indigo) · green=works · red=dead
   ===================================================================== */

:root{
  --bg:#ffffff;
  --panel:#f7f8fa;
  --panel2:#eef1f6;
  --line:#e2e6ee;
  --line2:#d3d9e4;
  --fg:#15171c;
  --mut:#5c6472;
  --ac:#2f6bed;
  --ac-t:rgba(47,107,237,.10);
  --ok:#0f8a4f;
  --ok-t:rgba(15,138,79,.10);
  --bad:#d23b3b;
  --bad-t:rgba(210,59,59,.09);
  --amber:#b7791f;
  --amber-t:rgba(183,121,31,.10);
  --amber-b:rgba(183,121,31,.35);
  --mono:"SFMono-Regular",ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --wide:1000px;
  --r:12px;
  --sh:0 1px 2px rgba(20,24,33,.05),0 3px 12px rgba(20,24,33,.05);
  --sh-h:0 2px 6px rgba(20,24,33,.08),0 10px 28px rgba(20,24,33,.10);
  /* figure ink — resolved per theme so inline SVG stays readable both ways */
  --ink:#15171c; --ink-mut:#5c6472; --grid:#e2e6ee; --figbg:#ffffff;
}

@media (prefers-color-scheme:dark){
  :root{
    --bg:#0d1117; --panel:#161b22; --panel2:#1c2230; --line:#283041; --line2:#3a4663;
    --fg:#e6edf3; --mut:#9da7b3;
    --ac:#5b93ff; --ac-t:rgba(91,147,255,.14);
    --ok:#35c98a; --ok-t:rgba(53,201,138,.14);
    --bad:#ff6b5e; --bad-t:rgba(255,107,94,.13);
    --amber:#e0a800; --amber-t:rgba(224,168,0,.12); --amber-b:rgba(224,168,0,.40);
    --sh:0 1px 2px rgba(0,0,0,.4),0 4px 16px rgba(0,0,0,.28);
    --sh-h:0 2px 6px rgba(0,0,0,.5),0 10px 30px rgba(0,0,0,.4);
    --ink:#e6edf3; --ink-mut:#9da7b3; --grid:#283041; --figbg:#11161e;
  }
}
:root[data-theme="light"]{
  --bg:#ffffff; --panel:#f7f8fa; --panel2:#eef1f6; --line:#e2e6ee; --line2:#d3d9e4;
  --fg:#15171c; --mut:#5c6472;
  --ac:#2f6bed; --ac-t:rgba(47,107,237,.10);
  --ok:#0f8a4f; --ok-t:rgba(15,138,79,.10);
  --bad:#d23b3b; --bad-t:rgba(210,59,59,.09);
  --amber:#b7791f; --amber-t:rgba(183,121,31,.10); --amber-b:rgba(183,121,31,.35);
  --sh:0 1px 2px rgba(20,24,33,.05),0 3px 12px rgba(20,24,33,.05);
  --sh-h:0 2px 6px rgba(20,24,33,.08),0 10px 28px rgba(20,24,33,.10);
  --ink:#15171c; --ink-mut:#5c6472; --grid:#e2e6ee; --figbg:#ffffff;
}
:root[data-theme="dark"]{
  --bg:#0d1117; --panel:#161b22; --panel2:#1c2230; --line:#283041; --line2:#3a4663;
  --fg:#e6edf3; --mut:#9da7b3;
  --ac:#5b93ff; --ac-t:rgba(91,147,255,.14);
  --ok:#35c98a; --ok-t:rgba(53,201,138,.14);
  --bad:#ff6b5e; --bad-t:rgba(255,107,94,.13);
  --amber:#e0a800; --amber-t:rgba(224,168,0,.12); --amber-b:rgba(224,168,0,.40);
  --sh:0 1px 2px rgba(0,0,0,.4),0 4px 16px rgba(0,0,0,.28);
  --sh-h:0 2px 6px rgba(0,0,0,.5),0 10px 30px rgba(0,0,0,.4);
  --ink:#e6edf3; --ink-mut:#9da7b3; --grid:#283041; --figbg:#11161e;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:64px}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.62 var(--sans);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
.wrap{max-width:var(--wide);margin:0 auto;padding:0 20px 90px}
h1{font-size:30px;line-height:1.22;margin:0 0 12px;font-weight:780;letter-spacing:-.02em}
h2{font-size:15px;margin:0;font-weight:700;letter-spacing:.02em}
h3{font-size:14.5px;margin:0 0 6px;font-weight:700}
p{margin:0 0 12px}
a{color:var(--ac);text-decoration:none}
a:hover{text-decoration:underline}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.mut{color:var(--mut)}
code{font-family:var(--mono);background:var(--panel2);border:1px solid var(--line);
  padding:.5px 6px;border-radius:6px;font-size:.86em}

/* ---- nav ----------------------------------------------------------- */
.nav{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line);
  display:flex;gap:4px;flex-wrap:wrap;align-items:center;
  padding:9px 20px;margin:0 -20px 0;
}
.nav .brand{font-weight:780;letter-spacing:-.01em;margin-right:12px;
  display:flex;align-items:center;gap:8px}
.nav .brand .dot{width:9px;height:9px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 3px var(--ok-t)}
.nav a{color:var(--mut);padding:5px 11px;border-radius:8px;font-weight:600;
  font-size:13.5px;transition:background .15s,color .15s}
.nav a:hover{color:var(--fg);background:var(--panel2);text-decoration:none}
.nav .spacer{flex:1}
.nav .date{font-family:var(--mono);font-size:12px;color:var(--mut)}

/* ---- section markers ------------------------------------------------ */
.section{margin-top:56px;scroll-margin-top:64px}
.smark{display:flex;align-items:center;gap:10px;margin:0 0 16px;flex-wrap:wrap}
.smark .sym{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--ac);
  border:1px solid var(--line2);border-radius:6px;padding:2px 8px;background:var(--panel)}
.smark .kr{color:var(--mut);font-size:13px;font-weight:600}
.smark .rule{flex:1;height:1px;background:var(--line);min-width:20px}

/* ---- hero ----------------------------------------------------------- */
.hero{padding:40px 0 6px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--ok);
  background:var(--ok-t);border:1px solid var(--line);border-radius:999px;
  padding:4px 12px;margin:0 0 16px}
.eyebrow .live{width:7px;height:7px;border-radius:50%;background:var(--ok);
  animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
.hero h1{max-width:860px}
.hero .sub{color:var(--mut);font-size:15.5px;max-width:780px;margin:0 0 26px}
.hero .sub b{color:var(--fg)}

/* ---- glossary cards -------------------------------------------------- */
.gloss{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 8px}
@media(max-width:820px){.gloss{grid-template-columns:repeat(2,1fr)}}
@media(max-width:460px){.gloss{grid-template-columns:1fr}}
.gcard{background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--ac);
  border-radius:var(--r);padding:13px 15px 14px;box-shadow:var(--sh)}
.gcard .t{font-weight:750;font-size:14.5px;margin:0 0 4px;display:flex;align-items:center;gap:7px}
.gcard .t .i{font-family:var(--mono);font-size:11px;color:var(--ac);border:1px solid var(--line2);
  border-radius:5px;padding:1px 6px;background:var(--bg)}
.gcard .d{font-size:12.5px;color:var(--mut);line-height:1.5;margin:0}

/* ---- stat cards ------------------------------------------------------ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:0 0 8px}
.stats.three{grid-template-columns:repeat(3,1fr)}
.statcard{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:18px 16px 15px;box-shadow:var(--sh);display:flex;flex-direction:column;
  min-height:132px;transition:transform .15s,box-shadow .15s,border-color .15s;
}
.statcard:hover{transform:translateY(-2px);box-shadow:var(--sh-h);border-color:var(--line2)}
.statcard .k{font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;
  color:var(--mut);font-weight:700;margin-bottom:auto}
.statcard .num{font-family:var(--mono);font-size:29px;line-height:1.05;font-weight:700;
  letter-spacing:-.02em;display:flex;align-items:baseline;gap:6px;margin-top:12px}
.statcard .num.sm{font-size:21px}
.statcard .foot{margin-top:7px;font-size:12px;color:var(--mut);line-height:1.4}
.statcard.good{border-top:3px solid var(--ok)} .statcard.good .num{color:var(--ok)}
.statcard.dead{border-top:3px solid var(--bad)} .statcard.dead .num{color:var(--bad)}
.statcard.flat{border-top:3px solid var(--mut)} .statcard.flat .num{color:var(--fg)}
.statcard.law{border-top:3px solid var(--ac);
  background:linear-gradient(0deg,var(--ac-t),var(--ac-t)),var(--panel)}
.statcard.law .num{font-size:15px;font-weight:700;line-height:1.3;color:var(--fg);
  font-family:var(--sans);letter-spacing:0}
@media(max-width:820px){.stats,.stats.three{grid-template-columns:repeat(2,1fr)}}
@media(max-width:460px){.stats,.stats.three{grid-template-columns:1fr}}

/* ---- tables ---------------------------------------------------------- */
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh);background:var(--panel);margin:0 0 14px}
.tbl{width:100%;border-collapse:separate;border-spacing:0;font-size:13.5px;min-width:560px}
.tbl th,.tbl td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line)}
.tbl thead th{background:var(--panel2);font-size:10.5px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--mut);font-weight:700}
.tbl tbody tr:last-child td{border-bottom:none}
.tbl tbody tr:hover{background:var(--ac-t)}
.tbl td.n{font-family:var(--mono);text-align:right;font-variant-numeric:tabular-nums}
.tbl .win{color:var(--ok);font-weight:700}
.tbl .lose{color:var(--bad);font-weight:700}
.tbl .sys{font-weight:600}
.tbl tr.hi td{background:var(--ok-t)}
.tbl .tag{font-family:var(--mono);font-size:11px;color:var(--mut)}
.tbl col.spot{background:var(--amber-t)}

/* ---- figures --------------------------------------------------------- */
.fig{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:16px 16px 12px;box-shadow:var(--sh);margin:0 0 14px}
.fig svg{display:block;width:100%;height:auto;max-width:660px;margin:0 auto}
.fig .figt{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ac);margin:0 0 10px}
.cap{color:var(--mut);font-size:12.5px;line-height:1.5;margin:10px 0 0}
.cap b{color:var(--fg)}
.figrow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:760px){.figrow{grid-template-columns:1fr}}

/* ---- caveat boxes ----------------------------------------------------- */
.caveat{border:1px solid var(--amber-b);border-left:5px solid var(--amber);
  background:linear-gradient(0deg,var(--amber-t),var(--amber-t)),var(--panel);
  border-radius:var(--r);padding:14px 18px;margin:0 0 14px;box-shadow:var(--sh)}
.caveat .h{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--amber);margin:0 0 7px}
.caveat p{margin:0 0 6px;font-size:13.5px;line-height:1.55}
.caveat p:last-child{margin:0}
.caveat ol,.caveat ul{margin:0;padding-left:20px;font-size:13.5px;line-height:1.55}
.caveat li{margin:0 0 4px}
.caveat li:last-child{margin:0}

.law-callout{
  border:1px solid var(--ac);border-left:5px solid var(--ac);border-radius:var(--r);
  background:linear-gradient(0deg,var(--ac-t),var(--ac-t)),var(--panel);
  padding:18px 22px;margin:0 0 14px;box-shadow:var(--sh)}
.law-callout .lead{font-size:16.5px;line-height:1.45;font-weight:700;margin:0}

.retract{border:1px solid var(--bad);border-left:5px solid var(--bad);border-radius:var(--r);
  background:linear-gradient(0deg,var(--bad-t),var(--bad-t)),var(--panel);
  padding:16px 20px;margin:0 0 14px;box-shadow:var(--sh)}
.retract .h{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--bad);margin:0 0 8px}
.retract p{margin:0 0 8px;font-size:14px;line-height:1.6}
.retract p:last-child{margin:0}
.retract .strike{text-decoration:line-through;color:var(--mut)}

/* ---- animation panels -------------------------------------------------- */
.anims{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:760px){.anims{grid-template-columns:1fr}}
.anim{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:14px 16px 12px;box-shadow:var(--sh)}
.anim .at{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ac);margin:0 0 8px}
.anim svg{display:block;width:100%;height:auto;max-width:340px;margin:0 auto}
.anim .cap{text-align:center}

/* commit-loop animation */
.cl-cell{opacity:0}
.cl-cell.f1{animation:clFill 7s linear infinite}
.cl-cell.f2{animation:clFill 7s linear infinite .5s}
.cl-cell.f3{animation:clFill 7s linear infinite 1s}
.cl-cell.f4{animation:clFill 7s linear infinite 1.5s}
.cl-cell.f5{animation:clFill 7s linear infinite 2s}
@keyframes clFill{0%{opacity:0}4%{opacity:1}52%{opacity:1}62%{opacity:.12}100%{opacity:.12}}
.cl-bad{opacity:0}
.cl-badbox{animation:clBad 7s linear infinite}
@keyframes clBad{0%,35%{opacity:0}39%{opacity:1}52%{opacity:1}70%{opacity:.25}100%{opacity:.25}}
.cl-collapse{animation:clCollapse 7s linear infinite;transform-origin:50% 50%}
@keyframes clCollapse{0%,52%{transform:none;opacity:1}
  58%{transform:translateX(2px)}62%{transform:translateX(-2px)}
  72%{transform:scale(.94);opacity:.55}92%{transform:scale(.94);opacity:.55}
  96%{transform:none;opacity:1}100%{transform:none;opacity:1}}
.cl-lock{animation:clLock 7s linear infinite}
@keyframes clLock{0%,55%{opacity:0}64%{opacity:1}92%{opacity:1}100%{opacity:0}}

/* global-check animation */
.gc-place{animation:gcPlace 7s linear infinite}
@keyframes gcPlace{0%,6%{opacity:0}12%{opacity:1}68%{opacity:1}76%{opacity:0}100%{opacity:0}}
.gc-wave{opacity:0;transform-origin:50% 50%}
.gc-w1{animation:gcWave 7s linear infinite 1s}
.gc-w2{animation:gcWave 7s linear infinite 1.5s}
.gc-w3{animation:gcWave 7s linear infinite 2s}
@keyframes gcWave{0%{opacity:0;transform:scale(.3)}
  6%{opacity:.75;transform:scale(.75)}14%{opacity:0;transform:scale(1.35)}
  100%{opacity:0;transform:scale(1.35)}}
.gc-clash{animation:gcClash 7s linear infinite}
@keyframes gcClash{0%,44%{opacity:0}48%{opacity:1}54%{opacity:.2}58%{opacity:1}68%{opacity:1}
  76%{opacity:0}100%{opacity:0}}
.gc-roll{animation:gcRoll 7s linear infinite}
@keyframes gcRoll{0%,70%{opacity:0}78%{opacity:1}94%{opacity:1}100%{opacity:0}}

@media (prefers-reduced-motion:reduce){
  .eyebrow .live,
  .cl-cell,.cl-cell.f1,.cl-cell.f2,.cl-cell.f3,.cl-cell.f4,.cl-cell.f5,
  .cl-badbox,.cl-collapse,.cl-lock,
  .gc-place,.gc-wave,.gc-w1,.gc-w2,.gc-w3,.gc-clash,.gc-roll{
    animation:none !important;opacity:1 !important;transform:none !important}
  .gc-wave{opacity:.35 !important}
}

/* ---- small list cards -------------------------------------------------- */
.traps{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:720px){.traps{grid-template-columns:1fr}}
.trap{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--ok);
  border-radius:var(--r);padding:13px 16px;box-shadow:var(--sh)}
.trap .n{font-family:var(--mono);font-size:11px;color:var(--ok);font-weight:700}
.trap p{margin:2px 0 0;font-size:13px;line-height:1.5;color:var(--fg)}

.next{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:820px){.next{grid-template-columns:1fr}}
.ncard{background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--ac);
  border-radius:var(--r);padding:14px 16px;box-shadow:var(--sh)}
.ncard .n{font-family:var(--mono);font-size:11px;color:var(--ac);font-weight:700;
  letter-spacing:.08em}
.ncard .t{font-weight:700;font-size:14px;margin:4px 0 5px}
.ncard p{margin:0;font-size:12.5px;color:var(--mut);line-height:1.5}

.limits{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
@media(max-width:720px){.limits{grid-template-columns:1fr}}
.limit{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--bad);
  border-radius:var(--r);padding:14px 18px;box-shadow:var(--sh);font-size:13px;
  color:var(--mut);line-height:1.55}
.limit .h{font-weight:700;color:var(--fg);display:block;margin-bottom:4px;font-size:13.5px}

/* ---- footer ------------------------------------------------------------ */
.foot{margin-top:64px;border-top:1px solid var(--line);padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--mut)}
.foot a{font-weight:600}

@media(max-width:680px){
  h1{font-size:24px}
  .wrap{padding:0 15px 70px}
  .nav{margin:0 -15px}
  .statcard .num{font-size:25px}
}