:root {
  color-scheme: dark;
  --bg: #08090c;
  --bg-1: #0c0e13;
  --bg-2: #11141b;
  --panel: #12151d;
  --ink: #e9e6df;
  --muted: #acb0bb;
  --faint: #9299a7;
  --line: rgba(255,255,255,.075);
  --line-2: rgba(255,255,255,.14);
  --amber: #ffad24;
  --safe: #36d399;
  --danger: #ff4d55;
  --cold: #54c7ff;
  --display: "Chakra Petch", ui-sans-serif, sans-serif;
  --body: "IBM Plex Sans", ui-sans-serif, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-offset, 0px) + 12px); }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(90% 70% at 85% -10%, rgba(255,173,36,.08), transparent 55%),
    var(--bg);
  font: 400 1rem/1.65 var(--body);
  -webkit-font-smoothing: antialiased;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
::selection { color: #08090c; background: var(--amber); }
.skip-link { position: fixed; top: -5rem; left: 1rem; z-index: 100; padding: .75rem 1rem; color: #08090c; background: var(--amber); }
.skip-link:focus { top: 1rem; }
#scroll-rail { position: fixed; inset: 0 0 auto; z-index: 90; height: 3px; }
#scroll-bar { width: 0; height: 100%; background: linear-gradient(90deg, var(--amber), var(--danger)); box-shadow: 0 0 14px var(--amber); }

.grid-nav { max-width: var(--max); margin: 0 auto; padding: 0 26px; display: grid; grid-template-columns: 236px minmax(0, 1fr); gap: 48px; }
.toc { position: sticky; top: 0; height: 100vh; padding: 30px 0; display: flex; flex-direction: column; gap: 3px; overflow-y: auto; scrollbar-width: none; }
.toc .brand { margin-bottom: 7px; color: var(--amber); font: 700 .82rem/1.25 var(--display); letter-spacing: .2em; }
.toc .brand small { display: block; margin-top: 6px; color: var(--faint); font: 400 .75rem/1.6 var(--mono); letter-spacing: .14em; }
/* Keep the number gutter proportional to text and align wrapped labels at the first line. */
.toc > a:not(.brand):not(.paper-link) { min-height: 36px; padding: 7px 11px; display: grid; grid-template-columns: 2.5em minmax(0, 1fr); align-items: baseline; color: var(--faint); border-left: 2px solid transparent; border-radius: 8px; font: .75rem/1.4 var(--mono); transition: color .18s ease, background .18s ease, border-color .18s ease; }
.toc > a:not(.brand):not(.paper-link) span { font-weight: 700; }
.toc > a:not(.brand):not(.paper-link):hover,
.toc > a:not(.brand):not(.paper-link):focus-visible { color: var(--ink); background: rgba(255,255,255,.03); }
.toc > a.active:not(.brand):not(.paper-link) { color: var(--amber); border-left-color: var(--amber); background: rgba(255,173,36,.075); }
.paper-link { margin-top: auto; padding: 12px; color: var(--muted); border: 1px solid var(--line-2); border-radius: 8px; font: 650 .75rem/1 var(--mono); letter-spacing: .08em; text-align: center; }
.paper-link:hover, .paper-link:focus-visible { color: var(--amber); border-color: rgba(255,173,36,.4); }

main { min-width: 0; padding-bottom: 100px; container-type: inline-size; overflow-wrap: anywhere; }
.hero { min-height: auto; padding: 64px 0 58px; border-bottom: 1px solid var(--line); }
.classif { margin-bottom: 34px; display: flex; align-items: center; gap: 11px; flex-wrap: wrap; }
.classif .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--danger); box-shadow: 0 0 10px var(--danger); }
.pill { padding: 5px 10px; color: var(--muted); border: 1px solid var(--line-2); border-radius: 999px; font: .75rem/1 var(--mono); letter-spacing: .15em; }
.pill.red { color: var(--danger); border-color: rgba(255,77,85,.4); }
.hero h1 { margin: 0; font-family: var(--display); line-height: .95; }
.hero h1 > span { display: block; margin-bottom: 15px; color: var(--faint); font-size: clamp(.88rem, 2vw, 1.28rem); font-weight: 500; letter-spacing: .37em; }
.hero h1 > strong,.hero h1 > em { display: inline; font-size: clamp(3.6rem, 7.8vw, 6rem); font-weight: 700; letter-spacing: -.045em; line-height: .82; }
.hero h1 > strong { color: var(--ink); }
.hero h1 > em { color: var(--amber); font-style: normal; }
.sub { max-width: 62ch; margin: 27px 0 0; color: var(--muted); font-size: 1.1rem; font-weight: 300; }
.safe-text { color: var(--safe); }.danger-text { color: var(--danger); }
.big-trace { margin: 55px 0 8px; display: grid; grid-template-columns: 1fr auto 1fr; gap: clamp(18px,4vw,42px); align-items: center; }
.big-trace > div { min-width: 0; }
.big-trace strong { display: block; font: 700 clamp(4rem, 10vw, 8rem)/.85 var(--display); letter-spacing: -.05em; }
.big-trace .money { white-space: nowrap; font-size: clamp(3.5rem, 7.2vw, 5.8rem); }
.big-trace .safe { color: var(--safe); text-shadow: 0 0 35px rgba(54,211,153,.15); }
.big-trace .danger { color: var(--danger); text-shadow: 0 0 42px rgba(255,77,85,.22); }
.big-trace small { display: block; margin-top: 14px; color: var(--faint); font: .75rem/1.4 var(--mono); letter-spacing: .12em; }
.big-trace > i { color: var(--amber); font: 1.3rem/1 var(--mono); font-style: normal; }
.metarow { margin-top: 42px; display: flex; gap: 9px; flex-wrap: wrap; }
.chip { padding: 9px 12px; color: var(--muted); border: 1px solid var(--line-2); border-radius: 8px; background: var(--bg-1); font: .75rem/1.3 var(--mono); }
.chip b { color: var(--ink); }.chip.amber { color: var(--amber); border-color: rgba(255,173,36,.35); }.chip.amber b { color: var(--amber); }
.scenario-note { max-width: 72ch; margin: 15px 0 0; color: var(--faint); font: .75rem/1.55 var(--mono); }
.simulator-note { margin-top: 14px; }

section { padding: 68px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 26px; }
.kicker { margin-bottom: 17px; display: flex; align-items: center; gap: 11px; color: var(--amber); font: .75rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; }
.kicker span { color: var(--faint); font-weight: 700; }
.kicker::after { content: ""; flex: 1; height: 1px; background: var(--line); }
h2 { margin: 0 0 17px; font: 600 clamp(1.9rem, 4.4vw, 3.2rem)/1.08 var(--display); letter-spacing: -.025em; }
h2 em { color: var(--amber); font-style: normal; }
.lead { max-width: 66ch; margin: 0 0 22px; color: var(--ink); font-size: 1.08rem; font-weight: 300; }
.gloss { display: grid; gap: 9px; }
.gloss details { border: 1px solid var(--line); border-radius: 9px; background: var(--panel); overflow: hidden; }
.gloss summary { min-height: 54px; padding: 0 18px; display: grid; grid-template-columns: 150px 1fr 20px; align-items: center; cursor: pointer; list-style: none; }
.gloss summary::-webkit-details-marker { display: none; }
.gloss summary code { color: var(--amber); font: 700 .78rem/1 var(--mono); }
.gloss summary span { color: var(--ink); font-size: .91rem; }
.gloss summary b { color: var(--faint); font: 400 1rem/1 var(--mono); }
.gloss details[open] summary b { color: var(--amber); transform: rotate(45deg); }
.gloss details > p { margin: 0; padding: 15px 18px 18px 168px; color: var(--muted); border-top: 1px solid var(--line); font-size: .89rem; }

.analogy { position: relative; margin-top: 24px; padding: 28px; border: 1px solid var(--line-2); border-radius: 14px; background: linear-gradient(180deg, var(--panel), var(--bg-1)); }
.analogy > span { position: absolute; top: 15px; right: 18px; color: var(--faint); font: .75rem/1 var(--mono); letter-spacing: .25em; }
.analogy h3 { max-width: 62ch; margin: 18px 0 15px; font: 500 1.32rem/1.45 var(--display); }
.analogy p { max-width: 68ch; margin: 0; color: var(--muted); }
.timeline { margin-top: 24px; padding: 25px 24px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg-1); }
.timeline-title { display: block; margin-bottom: 58px; color: var(--faint); font: .75rem/1 var(--mono); letter-spacing: .1em; text-align: center; }
.track { position: relative; height: 3px; margin: 0 20px 76px; background: linear-gradient(90deg,var(--safe),var(--amber) 48%,var(--danger)); }
.node { position: absolute; top: 50%; width: 180px; transform: translate(-50%,-50%); text-align: center; }
.node.check { left: 4%; }.node.gap { left: 50%; }.node.use { left: 96%; }
.node i { display: block; width: 15px; height: 15px; margin: 10px auto; border: 3px solid var(--bg-1); border-radius: 50%; }
.node.check i { background: var(--safe); }.node.gap i,.node.use i { background: var(--danger); }
.node b { display: block; color: var(--safe); font: 700 .75rem/1 var(--mono); }
.node.gap b,.node.use b { color: var(--danger); }
.node span,.node small { display: block; color: var(--muted); font: .75rem/1.45 var(--mono); }
.node small { color: var(--faint); }
.timeline > p { max-width: 68ch; margin: 0 auto; color: var(--faint); font-size: .86rem; text-align: center; }

.path-switch { margin-top: 24px; padding: 5px; display: grid; grid-template-columns: 1fr 1fr; gap: 5px; border: 1px solid var(--line); border-radius: 11px; background: var(--bg-1); }
.path-switch button { padding: 13px 16px; cursor: pointer; color: var(--faint); border: 1px solid transparent; border-radius: 8px; background: transparent; font: .75rem/1.2 var(--mono); letter-spacing: .04em; text-align: left; }
.path-switch button span { margin-right: 12px; font-weight: 700; }
.path-switch button.selected { color: var(--amber); border-color: rgba(255,173,36,.35); background: rgba(255,173,36,.07); }
.path-stage { margin-top: 12px; border: 1px solid var(--line-2); border-radius: 14px; background: var(--bg-1); overflow: hidden; }
.path-flow { min-height: 300px; padding: 54px 5%; display: grid; grid-template-columns: minmax(0,1.15fr) 24px minmax(0,1fr) 24px minmax(0,1fr); align-items: center; background: linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px); background-size: 30px 30px; }
.path-flow > i { color: var(--faint); font-style: normal; text-align: center; }
.request-object,.approval-view,.effect-view { min-width: 0; padding: 17px; border: 1px solid var(--line-2); border-radius: 9px; background: rgba(8,9,12,.94); }
.request-object small,.approval-view small,.effect-view small { color: var(--faint); font: .75rem/1 var(--mono); letter-spacing: .09em; }
.request-object p { margin: 13px 0 0; display: grid; grid-template-columns: 1fr; gap: 8px; font: .75rem/1.45 var(--mono); }
.request-object p span { color: var(--faint); }.request-object p b { color: var(--safe); font-weight: 500; }.request-object p.red b { color: var(--danger); }
.approval-view { border-color: rgba(54,211,153,.38); }
.approval-view strong,.effect-view strong { display: block; margin: 18px 0 4px; color: var(--safe); font: 700 2.7rem/1 var(--display); }
.approval-view p,.effect-view p { margin: 0 0 18px; color: var(--muted); font-size: .78rem; }
.approval-view > span { padding: 5px 7px; color: #07120e; background: var(--safe); font: 700 .75rem/1 var(--mono); letter-spacing: .08em; }
.effect-view { border-color: rgba(255,77,85,.4); }.effect-view strong { color: var(--danger); }
.path-info { padding: 22px 25px; border-top: 1px solid var(--line); }
.path-info > span { color: var(--amber); font: .75rem/1 var(--mono); letter-spacing: .12em; }
.path-info h3 { margin: 8px 0 6px; font: 600 1.15rem/1.2 var(--display); }
.path-info p { max-width: 72ch; margin: 0; color: var(--muted); font-size: .88rem; }

.clauses { display: grid; gap: 9px; margin-top: 22px; }
.clauses article { min-height: 78px; padding: 17px 19px; display: grid; grid-template-columns: 54px 1fr; gap: 14px; align-items: start; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); }
.clauses article > span { color: var(--amber); font: 700 .75rem/1.5 var(--mono); }
.clauses h3 { margin: 0 0 5px; font: 600 1rem/1.3 var(--display); }
.clauses p { margin: 0; color: var(--muted); font-size: .86rem; }
.clauses .combine { display: block; min-height: auto; border-color: rgba(255,173,36,.35); background: linear-gradient(180deg,rgba(255,173,36,.08),transparent); text-align: center; }
.clauses .combine p { color: var(--ink); font: 500 .9rem/1.5 var(--mono); }.clauses .combine b { color: var(--safe); }.clauses .combine b:nth-child(2) { color: var(--danger); }.clauses .combine strong { color: var(--amber); }

.sim { margin-top: 26px; border: 1px solid var(--line-2); border-radius: 16px; background: var(--bg-1); overflow: hidden; box-shadow: 0 24px 60px -24px rgba(0,0,0,.85); }
.sim-bar { min-height: 62px; padding: 12px 17px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.dots { display: flex; gap: 6px; }.dots i { width: 10px; height: 10px; border-radius: 50%; }.dots i:nth-child(1){background:#ff5f57}.dots i:nth-child(2){background:#febc2e}.dots i:nth-child(3){background:#28c840}
.sim-title { color: var(--muted); font: .75rem/1 var(--mono); letter-spacing: .12em; }
.sim-controls { margin-left: auto; display: flex; gap: 7px; }
.sim button { min-height: 36px; padding: 8px 12px; cursor: pointer; color: var(--ink); border: 1px solid var(--line-2); border-radius: 8px; background: var(--panel); font: .75rem/1 var(--mono); }
.sim button:hover,.sim button:focus-visible { color: var(--amber); border-color: var(--amber); }.sim button:disabled { opacity: .35; cursor: not-allowed; }.sim button.primary { color: #08090c; border-color: var(--amber); background: var(--amber); font-weight: 700; }
.sim-progress { display: grid; grid-template-columns: repeat(5,1fr); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.sim-progress button { min-height: 63px; padding: 10px 4px; border: 0; border-bottom: 2px solid transparent; border-radius: 0; color: var(--faint); background: transparent; text-align: center; }
.sim-progress button b { display: block; margin-bottom: 4px; color: inherit; font-size: .8rem; }.sim-progress button.on { color: var(--amber); border-bottom-color: var(--amber); }.sim-progress button.done b { color: var(--safe); }
.sim-stage { display: grid; grid-template-columns: 1fr 300px; }
.sim-main { min-height: 410px; padding: 22px; border-right: 1px solid var(--line); }
.actors { display: flex; gap: 9px; margin-bottom: 18px; }
.actor { flex: 1; padding: 13px 10px; opacity: .42; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); text-align: center; transition: opacity .2s,border-color .2s; }
.actor > span { display: grid; place-items: center; width: 30px; height: 30px; margin: 0 auto 8px; color: var(--faint); border: 1px solid var(--line-2); border-radius: 50%; font: .75rem/1 var(--mono); }
.actor b { display: block; color: var(--muted); font: .75rem/1 var(--mono); letter-spacing: .08em; }.actor small { color: var(--faint); font: .75rem/1 var(--mono); }.actor.active { opacity: 1; border-color: var(--amber); box-shadow: 0 0 0 2px rgba(255,173,36,.12); }
.taskbox { border: 1px solid var(--line-2); border-radius: 10px; background: var(--bg); overflow: hidden; }
.task-head,.approval-slot { min-height: 58px; padding: 12px 15px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); }
.task-head > span,.approval-slot > span,.history > span { color: var(--faint); font: .75rem/1 var(--mono); letter-spacing: .09em; }
.task-head code,.approval-slot code { color: var(--muted); font: .75rem/1 var(--mono); }.task-head b { margin-left: auto; padding: 5px 10px; color: var(--muted); border: 1px solid var(--line-2); border-radius: 999px; font: .75rem/1 var(--mono); }
.approval-slot code.granted { color: var(--safe); }.approval-slot code.hijacked { color: var(--danger); }
.history { min-height: 170px; padding: 17px 15px; }.history > div { margin-top: 13px; padding: 14px; color: var(--muted); border-left: 3px solid var(--faint); border-radius: 7px; background: var(--panel); font: .75rem/1.5 var(--mono); }.history > div.a { color: #c7f9e6; border-left-color: var(--safe); }.history > div.b { color: #ffd0d2; border-left-color: var(--danger); background: rgba(255,77,85,.07); }
.sim-copy { padding: 24px 20px; background: var(--bg-1); }.sim-copy > span { color: var(--amber); font: .75rem/1 var(--mono); letter-spacing: .13em; }.sim-copy h3 { margin: 12px 0; font: 600 1.2rem/1.25 var(--display); }.sim-copy p { margin: 0; color: var(--muted); font-size: .9rem; }.sim-copy > div { margin-top: 18px; padding: 10px 12px; border-radius: 7px; font: .75rem/1.45 var(--mono); }.sim-copy .ok { color: var(--safe); border: 1px solid rgba(54,211,153,.3); background: rgba(54,211,153,.07); }.sim-copy .bad { color: #ffafb3; border: 1px solid rgba(255,77,85,.35); background: rgba(255,77,85,.07); }
.sim-result { display: none; padding: 17px 21px; gap: 15px; align-items: center; border-top: 1px solid var(--danger); background: linear-gradient(90deg,rgba(122,18,18,.7),transparent); }.sim-result.show { display: flex; }.sim-result strong { color: var(--danger); font: 700 1.25rem/1 var(--display); }.sim-result p { margin: 0; color: #ffd0d2; font: .75rem/1.45 var(--mono); }

.cards { display: grid; gap: 11px; margin-top: 22px; }.cards.c2 { grid-template-columns: 1fr 1fr; }.cards article { min-height: 150px; padding: 20px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); }.cards article > span { color: var(--danger); font: 700 1.05rem/1 var(--mono); }.cards h3 { margin: 22px 0 8px; font: 600 1.05rem/1.25 var(--display); }.cards p { margin: 0; color: var(--muted); font-size: .86rem; }
.callout { margin-top: 16px; padding: 16px 18px; color: var(--muted); border: 1px solid rgba(255,173,36,.3); border-radius: 9px; background: rgba(255,173,36,.065); font-size: .88rem; }.callout b { color: var(--amber); }

.evidence-list { margin-top: 23px; border-top: 1px solid var(--line); }.evidence-list article { min-height: 94px; padding: 16px 5px; display: grid; grid-template-columns: 42px 1fr auto; gap: 15px; align-items: center; border-bottom: 1px solid var(--line); }.evidence-list article > span { color: var(--amber); font: .75rem/1 var(--mono); }.evidence-list h3 { margin: 0 0 5px; font: 600 1rem/1.25 var(--display); }.evidence-list p { margin: 0; color: var(--muted); font-size: .82rem; }.evidence-list article > b { color: var(--cold); font: 700 .75rem/1 var(--mono); letter-spacing: .08em; }
.paper-citation { max-width: 66ch; margin: 25px 0 0; color: var(--ink); font-size: 1rem; }
.paper-citation cite { display: block; font-style: normal; }
.paper-citation > span { display: block; margin-top: 4px; color: var(--muted); font-size: .875rem; }
.read-paper { margin-top: 16px; padding: 11px 14px; display: inline-flex; align-items: center; gap: 28px; color: #08090c; background: var(--amber); border-radius: 7px; font: 700 .75rem/1 var(--mono); }.read-paper span { font-size: .9rem; }
.limits-grid { margin-top: 23px; display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }.limits-grid article { min-height: 185px; padding: 21px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); }.limits-grid article > span { color: var(--danger); font: .75rem/1 var(--mono); letter-spacing: .1em; }.limits-grid h3 { margin: 34px 0 9px; font: 600 1.08rem/1.25 var(--display); }.limits-grid p { margin: 0; color: var(--muted); font-size: .85rem; }
.before-after { margin-top: 23px; display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }.before-after article { padding: 21px; border: 1px solid var(--line); border-radius: 11px; }.before-after .before { border-color: rgba(255,77,85,.3); background: rgba(255,77,85,.045); }.before-after .after { border-color: rgba(54,211,153,.3); background: rgba(54,211,153,.045); }.before-after h3 { margin: 0 0 15px; font: 600 .9rem/1 var(--display); letter-spacing: .06em; }.before h3 { color: var(--danger); }.after h3 { color: var(--safe); }.before-after ul { margin: 0; padding-left: 18px; }.before-after li { margin-bottom: 8px; color: var(--muted); font-size: .84rem; }
.portable-rule { margin-top: 14px; padding: 18px 20px; display: grid; grid-template-columns: 160px 1fr; gap: 20px; align-items: center; border: 1px solid rgba(255,173,36,.35); border-radius: 9px; background: rgba(255,173,36,.055); }.portable-rule span { color: var(--amber); font: .75rem/1 var(--mono); letter-spacing: .1em; }.portable-rule p { margin: 0; color: var(--ink); }

.quiz { display: grid; gap: 13px; margin-top: 23px; }.question { padding: 20px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); }.question > span { color: var(--amber); font: .75rem/1 var(--mono); letter-spacing: .1em; }.question h3 { margin: 12px 0 15px; font: 500 1.02rem/1.4 var(--display); }.options { display: grid; gap: 8px; }.option { min-height: 44px; padding: 11px 13px; display: flex; align-items: flex-start; gap: 11px; cursor: pointer; color: var(--muted); border: 1px solid var(--line); border-radius: 8px; background: var(--bg-1); font-size: .84rem; text-align: left; }.option b { flex: 0 0 22px; height: 22px; display: grid; place-items: center; color: var(--faint); border: 1px solid var(--line-2); border-radius: 4px; font: .75rem/1 var(--mono); }.option.correct { color: var(--ink); border-color: var(--safe); background: rgba(54,211,153,.08); }.option.correct b { color: #06130e; border-color: var(--safe); background: var(--safe); }.option.wrong { border-color: var(--danger); background: rgba(255,77,85,.07); }.option.wrong b { color: white; border-color: var(--danger); background: var(--danger); }.explanation { display: none; margin-top: 13px; padding: 9px 0 9px 13px; color: var(--muted); border-left: 2px solid var(--amber); font-size: .83rem; }.explanation.show { display: block; }.quiz-done { display: none; margin-top: 20px; color: var(--safe); font: 600 1.05rem/1.4 var(--display); text-align: center; }.quiz-done.show { display: block; }
footer { padding: 58px 0 25px; color: var(--faint); font: .75rem/1.8 var(--mono); }footer h3 { max-width: 62ch; margin: 0 0 17px; color: var(--muted); font: 500 1.08rem/1.4 var(--display); }footer p { margin: 3px 0; }footer a { display: inline-block; margin-top: 15px; color: var(--cold); }


/* Readable dossier controls and a stable approved/current comparison. */
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 4px; }
section:focus, header:focus { outline: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.toc-toggle { display: none; }
.toc > a { flex-shrink: 0; }
.toc > a:not(.brand):not(.paper-link) { min-height: 40px; font-size: .75rem; }
.classif { margin-bottom: 26px; }
.hero h1 { display: flex; flex-wrap: wrap; white-space: normal; line-height: 1.05; }
.hero h1 > strong,.hero h1 > em { min-width: 0; max-width: 100%; overflow-wrap: anywhere; line-height: 1.05; }
.sub { margin-top: 24px; font-size: 1.125rem; font-weight: 400; }
.big-trace { margin: 34px 0 16px; grid-template-columns: minmax(0,1fr) 30px minmax(0,1.5fr); gap: 20px; align-items: start; }
.big-trace small { margin: 0 0 16px; font-size: .75rem; line-height: 1.5; letter-spacing: .06em; }
.big-trace .money { font-size: clamp(3rem,6.7vw,5.3rem); line-height: 1; }
.big-trace p { margin: 12px 0 0; color: var(--muted); font-size: 1rem; }
.big-trace > i { font-size: 2rem; align-self: center; }
.hero-boundary { max-width: 60ch; margin: 27px 0 0; color: var(--ink); font-size: 1rem; }
.hero-actions { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; margin-top: 23px; }
.hero-actions a { min-height: 44px; display: inline-flex; align-items: center; gap: 18px; font-size: .875rem; color: var(--muted); }
.hero-actions .walkthrough-link { padding: 9px 14px; color: var(--amber); border: 1px solid rgba(255,173,36,.4); border-radius: 7px; background: rgba(255,173,36,.05); }
.hero-actions a:hover { color: var(--ink); }
.scenario-note { max-width: 76ch; font-size: .75rem; line-height: 1.6; }
.lead { font-weight: 400; }
.gloss summary { min-height: 64px; grid-template-columns: 110px 1fr 20px; }
.gloss details > p { padding-left: 128px; font-size: 1rem; }
.gloss summary span { font-size: 1rem; }
.timeline-title { margin-bottom: 28px; font-size: .75rem; line-height: 1.6; }
.track { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; height: auto; margin: 0 0 22px; background: none; }
.node { position: relative; inset: auto !important; width: auto; transform: none; }
.node b { line-height: 1.4; }
.node span { min-height: 44px; margin-top: 7px; }
.node i { position: relative; width: 15px; height: 15px; }
.node::after { content: ""; position: absolute; height: 2px; top: 83px; left: 60%; right: -40%; background: var(--line-2); }
.node:last-child::after { display: none; }
.node span,.node small { font-size: .8125rem; }
.timeline > p { font-size: 1rem; }
.path-switch button { min-height: 66px; font-size: .875rem; line-height: 1.4; }
.path-switch button small { display: block; margin-top: 5px; color: var(--muted); font: .75rem/1.4 var(--body); }
.path-info p, .clauses p, .cards p, .callout, .evidence-list p, .limits-grid p, .before-after li, .option, .explanation { font-size: 1rem; }
.request-object p { font-size: .8125rem; }
.approval-view p,.effect-view p { font-size: .875rem; }
.clauses article { grid-template-columns: 34px 1fr; }
.evidence-list article { grid-template-columns: 24px 1fr; }
.evidence-list article > b { grid-column: 2; margin-top: -8px; line-height: 1.5; }
.read-paper { min-height: 44px; }
.limits-grid article { min-height: auto; }
.limits-grid h3 { margin-top: 22px; }
.portable-rule { grid-template-columns: 145px 1fr; }
.option.wrong b { color: var(--bg); }
.quiz-retry { margin-top: 12px; border-color: var(--line-2); color: var(--amber); }
footer { font-size: .8125rem; }
footer a { min-height: 44px; display: inline-flex; align-items: center; }

/* Keep the changing evidence close to the manual playback controls. */
.sim-stage { display: block; padding: 24px; }
.sim-copy { padding: 0; min-height: 164px; background: none; }
.sim-copy h3 { margin: 10px 0 8px; font-size: 1.5rem; }
.sim-copy p { max-width: 72ch; font-size: 1rem; }
.sim-copy .sim-mode { margin: 8px 0; color: var(--amber); font: .75rem/1.5 var(--mono); }
.sim-bar { min-height: 48px; }
.sim-title { font-size: .75rem; line-height: 1.5; letter-spacing: .07em; }
.sim button { min-height: 44px; font-size: .8125rem; line-height: 1.3; }
.sim-progress button { min-height: 61px; font-size: .75rem; }
.sim-progress button b { font-size: .875rem; }
.comparison { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.action-card { min-width: 0; padding: 18px; border: 1px solid var(--line-2); border-radius: 10px; background: var(--bg); }
.action-card h4 { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 12px; font: 500 .75rem/1.5 var(--mono); color: var(--muted); }
.action-card h4 span { margin-left: auto; color: var(--safe); font-size: .75rem; }
.action-card dl { margin: 0; }
.action-card dl > div { display: grid; grid-template-columns: 82px 1fr; gap: 8px; align-items: baseline; padding: 7px 0; border-top: 1px solid var(--line); }
.action-card dt { color: var(--muted); font-size: .875rem; }
.action-card dd { margin: 0; color: var(--ink); font: 500 1rem/1.4 var(--mono); overflow-wrap: anywhere; }
.approved-card { border-color: rgba(54,211,153,.3); }
.approved-card dd { color: var(--safe); }
.current-card.changed { border-color: rgba(255,77,85,.55); background: rgba(255,77,85,.035); }
.current-card.changed dd,.current-card.changed h4 span { color: #ff8f95; }
.decision-record { min-height: 61px; display: flex; flex-wrap: wrap; gap: 6px 16px; align-content: center; align-items: baseline; margin: 14px 0 0; padding: 12px 0; }
.decision-record span { color: var(--muted); font: .75rem/1.5 var(--mono); }
.decision-record strong { font-size: .9375rem; font-weight: 400; }
.sim-verdict { min-height: 52px; margin: 0; padding: 13px 15px; border: 1px solid var(--line-2); border-radius: 8px; color: var(--muted); font: .8125rem/1.6 var(--mono); }
.sim-verdict.ok { color: #8fe4c1; border-color: rgba(54,211,153,.3); background: rgba(54,211,153,.04); }
.sim-verdict.bad { color: #ffadb2; border-color: rgba(255,77,85,.35); background: rgba(255,77,85,.05); }
.sim-controls { position: relative; margin: 0; padding: 14px 24px; display: flex; flex-wrap: wrap; gap: 8px; border-bottom: 1px solid var(--line); background: var(--bg-2); scroll-margin-top: 20px; }
.sim-controls .primary { margin-right: auto; }
.sim-experiment { padding: 22px 24px; border-top: 1px solid var(--line); }
.sim-experiment h3 { margin: 0 0 5px; font: 600 1.25rem/1.3 var(--display); }
.sim-experiment p { margin: 0 0 16px; color: var(--muted); font-size: .9375rem; }
.sim-experiment label { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 8px 0; cursor: pointer; font-size: .9375rem; }
.sim-experiment input { width: 20px; height: 20px; flex: 0 0 20px; margin: 0; accent-color: var(--safe); }
.sim-experiment .experiment-note { margin: 16px 0 0; font-size: .8125rem; }
@media (max-width: 68.75em) {
  .grid-nav { gap: 32px; grid-template-columns: 216px minmax(0,1fr); }
  .path-flow { padding: 30px 20px; grid-template-columns: 1fr; gap: 14px; }
  .path-flow > i { transform: rotate(90deg); }
  .request-object p { grid-template-columns: 1fr 1fr; }
  .approval-view strong,.effect-view strong { margin-top: 12px; }
  .approval-view p,.effect-view p { margin-bottom: 10px; }
  .action-card dl > div { grid-template-columns: 1fr; gap: 2px; }
}
@media (max-width: 57.5em) {
  .grid-nav { grid-template-columns: 1fr; gap: 0; }
  .sidebar { position: sticky; top: 0; z-index: 40; background: var(--bg); border-bottom: 1px solid var(--line-2); }
  .toc-toggle:not([hidden]) { width: 100%; min-height: 58px; padding: 10px 0; display: flex; gap: 14px; align-items: center; border: 0; background: var(--bg); font: .8125rem/1.4 var(--mono); cursor: pointer; }
  .toc-toggle > span:first-child { color: var(--amber); }
  .toc-toggle > span:nth-child(2) { flex: 1; text-align: left; color: var(--muted); }
  .toc-toggle > span:last-child { font-size: 1.25rem; }
  .toc { position: static; height: auto; max-height: max(0px, calc(100dvh - var(--nav-offset, 58px) - 8px)); overflow-y: auto; padding: 10px 0 16px; }
  .js .toc { display: none; }
  .js .is-open .toc { display: flex; }
  .toc .brand { display: none; }
  .toc > a:not(.brand):not(.paper-link) { min-height: 42px; }
  .paper-link { margin-top: 10px; min-height: 44px; }
  .hero { padding-top: 42px; }
  section, .hero { scroll-margin-top: 20px; }
  .sim-controls { scroll-margin-top: 12px; }
  .path-flow { grid-template-columns: minmax(0,1fr) 20px minmax(0,1fr) 20px minmax(0,1fr); gap: 0; padding: 32px 20px; }
  .path-flow > i { transform: none; }
  .request-object p { grid-template-columns: 1fr; }
  .action-card dl > div { grid-template-columns: 82px 1fr; }
}
@media (max-width: 38.75em) {
  .grid-nav { padding: 0 18px; }
  .hero { padding: 34px 0 44px; }
  .hero h1 > strong,.hero h1 > em { font-size: clamp(2.4rem,10vw,3.8rem); }
  .classif { margin-bottom: 23px; }
  .sub { font-size: 1.0625rem; margin-top: 22px; }
  .big-trace { grid-template-columns: minmax(0,1fr) 20px minmax(0,1.55fr); gap: 8px; margin-top: 29px; }
  .big-trace .money { font-size: clamp(2rem,8.8vw,3.4rem); }
  .big-trace small { min-height: 36px; margin-bottom: 10px; font-size: .75rem; letter-spacing: 0; }
  .big-trace p { font-size: .875rem; line-height: 1.5; }
  .hero-actions { gap: 8px 20px; }
  .hero-boundary { margin-top: 22px; }
  section { padding: 46px 0; }
  .kicker { font-size: .75rem; line-height: 1.5; letter-spacing: .09em; }
  .kicker::after { min-width: 14px; }
  h2 { font-size: clamp(1.9rem,7.3vw,2.5rem); }
  .lead { font-size: 1.0625rem; }
  .gloss summary { grid-template-columns: 68px 1fr 16px; gap: 6px; padding: 12px; }
  .gloss details > p { padding: 15px; }
  .analogy,.timeline { padding: 22px 18px; }
  .track { grid-template-columns: 1fr; gap: 26px; }
  .node { display: grid; grid-template-columns: 22px 1fr; gap: 4px 12px; text-align: left; }
  .node b,.node span,.node small { grid-column: 2; }
  .node span { min-height: auto; margin: 0; }
  .node i { position: absolute; top: 0; left: 0; margin: 0; }
  .node::after { top: 20px; bottom: -19px; left: 7px; right: auto; width: 2px; height: auto; }
  .timeline > p { text-align: left; }
  .path-switch { grid-template-columns: 1fr; }
  .path-flow { grid-template-columns: 1fr; gap: 14px; padding: 22px; }
  .path-flow > i { transform: rotate(90deg); }
  .request-object p { grid-template-columns: 1fr 1fr; }
  .path-info { padding: 22px; }
  .clauses article { padding: 16px; grid-template-columns: 24px 1fr; gap: 9px; }
  .sim-stage { padding: 17px 12px; }
  .sim-copy { min-height: 180px; }
  .sim-copy h3 { font-size: 1.25rem; }
  .sim-copy p { font-size: .9375rem; }
  .sim-bar { padding: 12px; gap: 10px; }
  .sim-title { font-size: .75rem; letter-spacing: 0; }
  .dots { gap: 4px; }.dots i { width: 7px; height: 7px; }
  .sim-progress button { padding-inline: 0; font-size: .75rem; min-width: 0; }
  .comparison { gap: 8px; }
  .action-card { padding: 11px; }
  .action-card h4 { min-height: 59px; display: block; font-size: .75rem; }
  .action-card h4 span { display: block; margin-top: 5px; font-size: .75rem; }
  .action-card dl > div { grid-template-columns: 1fr; gap: 2px; padding: 6px 0; }
  .action-card dt { font-size: .8125rem; }
  .action-card dd { font-size: .875rem; }
  .decision-record { min-height: 91px; margin-top: 8px; gap: 4px; }
  .decision-record strong { font-size: .875rem; }
  .sim-verdict { min-height: 74px; padding: 10px; }
  .sim-controls { padding: 12px; gap: 6px; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); }
  .sim-controls button { padding: 8px 3px; font-size: .75rem; }
  .sim-controls .primary { margin: 0; }
  .sim-experiment { padding: 20px 16px; }
  .cards.c2,.limits-grid,.before-after { grid-template-columns: 1fr; }
  .portable-rule { grid-template-columns: 1fr; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* Reading survives script failure; print carries the complete explanation. */
html:not(.js) .sidebar { position: static; }
.reading-fallback,.quiz-fallback { margin-top: 24px; padding: 22px; border: 1px solid var(--line-2); border-radius: 12px; background: var(--bg-1); }
.reading-fallback h3 { margin: 0 0 12px; font: 600 1.25rem/1.4 var(--display); }
.reading-fallback ol { margin: 0; padding-left: 24px; }
.reading-fallback li { padding: 5px 0 5px 5px; color: var(--muted); }
.reading-fallback p,.quiz-fallback p { color: var(--muted); }
.reading-fallback p:last-child,.quiz-fallback p:last-child { margin-bottom: 0; }
.simulator-ready .reading-fallback,.quiz-ready .quiz-fallback { display: none; }
.toc-toggle > span:nth-child(2) { min-width: 0; overflow-wrap: anywhere; }
.clauses article { grid-template-columns: 1.5rem minmax(0,1fr); }
.evidence-list article { grid-template-columns: 1.5rem minmax(0,1fr); }
footer .definition { color: var(--ink); font: 400 1.125rem/1.65 var(--body); max-width: 66ch; margin-bottom: 14px; }
footer > h3 { color: var(--amber); font-size: 1.35rem; }
footer > p { max-width: 76ch; }
footer .inline-link { display: inline; min-height: 0; margin: 0; text-decoration: underline; text-underline-offset: 3px; }
.reuse-actions { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 21px 0 8px; align-items: center; }
.reuse-actions a,.reuse-actions button { min-height: 44px; display: inline-flex; align-items: center; gap: 10px; margin: 0; font: .8125rem/1.5 var(--mono); }
.reuse-actions button { padding: 9px 12px; border: 1px solid var(--line-2); border-radius: 7px; color: var(--amber); background: var(--bg-1); cursor: pointer; }
.reuse-actions a:hover { text-decoration: underline; }
.format-label { color: var(--muted); font-size: .75rem; }
footer .copy-status { min-height: 1.5em; color: var(--safe); }
footer .footer-note { margin-top: 14px; font-size: .75rem; }

/* Align timeline connectors with the dots even when text grows or wraps. */
.node { container-type: inline-size; display: grid; grid-template-rows: auto 1fr 16px auto; gap: 10px; }
.node span { min-height: 44px; margin: 0; }
.node i { margin: 0 auto; align-self: center; }
.node::after { display: none; }
.node:not(:last-child) i::after { content: ""; position: absolute; top: 50%; left: calc(50% + 14px); width: calc(100cqw - 10px); height: 2px; background: var(--line-2); }
@media (max-width: 38.75em) {
  .node { grid-template-columns: 22px 1fr; grid-template-rows: auto; gap: 4px 12px; }
  .node span { min-height: auto; }
  .node i { margin: 0; }
  .node:not(:last-child)::after { display: block; }
  .node i::after { display: none !important; }
}
/* Reflow with the reading column and text size, not only the viewport. */
@container (max-width: 35rem) {
  .path-flow { grid-template-columns: 1fr; gap: 14px; }
  .path-flow > i { transform: rotate(90deg); }
  .request-object p { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .action-card dl > div { grid-template-columns: 1fr; gap: 2px; }
}
@container (max-width: 17rem) {
  .big-trace { grid-template-columns: 1fr; gap: 18px; }
  .big-trace small { min-height: auto; }
  .big-trace > i { justify-self: start; transform: rotate(90deg); }
  .comparison { grid-template-columns: 1fr; }
  .action-card h4 { min-height: auto; }
  .sim-controls { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .sim-progress { display: flex; flex-wrap: wrap; }
  .sim-progress button { flex: 1 0 6rem; }
  .gloss summary { grid-template-columns: minmax(0,1fr) 20px; }
  .gloss summary code,.gloss summary span { grid-column: 1; line-height: 1.5; }
  .gloss summary b { grid-column: 2; grid-row: 1 / 3; }
  .request-object p { grid-template-columns: 1fr; }
}
@media (max-width: 18em) {
  .toc-toggle { gap: .5rem !important; }
}
@media print {
  @page { margin: 16mm; }
  :root { --bg: #fff; --bg-1: #fff; --bg-2: #fff; --panel: #fff; --ink: #161616; --muted: #363636; --faint: #444; --line: #ccc; --line-2: #bbb; --amber: #755000; --safe: #076341; --danger: #a3232e; --cold: #124477; }
  html { font-size: 11pt; scroll-behavior: auto; }
  body { min-width: 0; background: #fff; color: #161616; }
  body::after,.sidebar,.skip-link,#scroll-rail,.path-switch,.sim,.hero-actions,.quiz,.quiz-done,.reuse-actions button,.copy-status { display: none !important; }
  .grid-nav { display: block; max-width: none; padding: 0; }
  main { padding: 0; }
  .hero,section { padding: 18pt 0; scroll-margin: 0; break-inside: auto; }
  .hero { min-height: 0; }
  .classif { margin-bottom: 12pt; }
  .pill { border-color: #999; color: #444 !important; }
  .classif .dot { display: none; }
  .hero h1 > strong,.hero h1 > em { font-size: 44pt; }
  h2 { font-size: 23pt; }
  h2,h3,.kicker { break-after: avoid; }
  p,li { orphans: 3; widows: 3; }
  .sub,.lead { font-size: 12pt; }
  .big-trace { grid-template-columns: 1fr 30px 1.5fr; margin-top: 20pt; break-inside: avoid; }
  .big-trace .money { font-size: 44pt; text-shadow: none; }
  .big-trace > i { transform: none; }
  .big-trace small { min-height: 0; }
  .analogy,.timeline,.gloss details,.clauses article,.cards article,.limits-grid article,.before-after article,.portable-rule,.path-stage,.reading-fallback,.quiz-fallback { background: none !important; box-shadow: none; break-inside: avoid; }
  .analogy,.timeline,.path-info,.cards article,.limits-grid article,.before-after article,.reading-fallback,.quiz-fallback { padding: 14pt; }
  .path-stage[hidden] { display: block !important; }
  .path-flow { display: grid; grid-template-columns: minmax(0,1fr) 20px minmax(0,1fr) 20px minmax(0,1fr); gap: 0; min-height: 0; padding: 18pt; background: none; }
  .path-flow > i { transform: none; }
  .request-object,.approval-view,.effect-view { background: none; padding: 10pt; }
  .request-object p { grid-template-columns: 1fr; }
  .approval-view > span { color: #161616; background: none; border: 1px solid #777; }
  .reading-fallback,.quiz-fallback { display: block !important; }
  .track { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .node { grid-template-columns: 1fr; grid-template-rows: auto 1fr 16px auto; gap: 10px; text-align: center; }
  .node b,.node span,.node small { grid-column: 1; }
  .node i { position: relative; margin: 0 auto; }
  .node::after { display: none !important; }
  .node i::after { display: none !important; }
  .gloss summary { grid-template-columns: 100px 1fr 15px; min-height: 0; padding: 10pt; }
  .gloss details > p { padding: 10pt; }
  .cards.c2,.limits-grid,.before-after { grid-template-columns: 1fr 1fr; }
  .limits-grid h3,.cards h3 { margin-top: 10pt; }
  .evidence-list article { break-inside: avoid; }
  .read-paper { color: #161616; background: none; border: 1px solid #999; }
  footer { padding: 24pt 0 0; }
  .reuse-actions { gap: 18pt; }
}