/* Electric Hurdles -- teaching site. Design notes: Project Operations/06 - Runtime/Teaching Website 2026-10-12/design/DESIGN.md */

@font-face{font-family:"Teko";src:url("fonts/teko-latin.woff2") format("woff2");font-weight:300 700;font-display:swap}
@font-face{font-family:"Share Tech Mono";src:url("fonts/share-tech-mono-latin.woff2") format("woff2");font-weight:400;font-display:swap}

:root{
  --carbon:#0b0b0c; --carbon-2:#141416; --carbon-3:#1d1d20; --line:#2c2c30;
  --chalk:#f1f1ec; --chalk-dim:#a9a9a4; --chalk-faint:#8c8c88;
  --electric:#00d4ff; --signal:#39ff14; --hot:#ff2d2d; --amber:#ffb020;
  --bg:var(--carbon); --bg-2:var(--carbon-2); --bg-3:var(--carbon-3); --rule:var(--line);
  --fg:var(--chalk); --dim:var(--chalk-dim); --faint:var(--chalk-faint);
  --accent:var(--electric); --go:var(--signal); --stop:var(--hot);
  --display:"Teko","Avenir Next Condensed","Arial Narrow",sans-serif;
  --mono:"Share Tech Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --text:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Helvetica,Arial,sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
  --pad:clamp(18px,4.5vw,56px);
  --max:1180px;
  color-scheme:dark;
}
/* Sun: daylight at the track. Maximum contrast, darker accents so they hold on white. */
html[data-theme="sun"]{
  --bg:#fbfbf7; --bg-2:#efefe9; --bg-3:#e4e4dd; --rule:#c9c9c1;
  --fg:#0b0b0c; --dim:#3b3b3e; --faint:#5e5e60;
  --accent:#0069a8; --go:#137a00; --stop:#c40000;
  color-scheme:light;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--text);font-size:17px;line-height:1.55;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent);text-underline-offset:.18em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:2px}
img,svg{max-width:100%}
em,.synth{font-style:italic}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-9999px;top:8px;background:var(--accent);color:var(--bg);padding:8px 14px;z-index:50;font-weight:700}
.skip:focus{left:8px}

/* ---------- top bar ---------- */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);
  backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--rule)}
.top .wrap{display:flex;align-items:center;gap:14px;min-height:58px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg);flex:none}
.brand svg{width:30px;height:30px}
.brand b{font-family:var(--display);font-weight:600;font-size:25px;letter-spacing:.06em;line-height:1;padding-top:4px;text-transform:uppercase}
.brand b span{color:var(--accent)}
.top nav{margin-left:auto;display:flex;align-items:center;gap:2px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;min-width:0}
.top .tools{display:flex;flex:none;border-left:1px solid var(--rule);padding-left:6px}
.top nav::-webkit-scrollbar{display:none}
.top nav a,.icon-btn{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 12px;text-decoration:none;white-space:nowrap;
  font-family:var(--display);font-weight:500;font-size:20px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);
  background:none;border:0;cursor:pointer;border-radius:4px;padding-top:3px}
.top nav a:hover,.icon-btn:hover{color:var(--fg)}
.top nav a[aria-current="page"]{color:var(--accent)}
.icon-btn svg{width:20px;height:20px;margin-top:-3px}

/* ---------- type ---------- */
.eyebrow,.kicker{font-family:var(--mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}
h1,h2,h3{font-family:var(--display);font-weight:600;text-transform:uppercase;letter-spacing:.01em;line-height:.92;margin:0}
h1{font-size:clamp(48px,9vw,112px);padding-top:.08em}
h2{font-size:clamp(32px,4.6vw,52px);padding-top:.08em}
h3{font-size:clamp(25px,2.6vw,31px);letter-spacing:.03em;padding-top:.1em;line-height:1}
p{margin:0 0 1em}
.lede{font-size:clamp(19px,2.1vw,24px);line-height:1.4;color:var(--fg);max-width:38ch;margin-top:18px}
.muted{color:var(--dim)}
.mono{font-family:var(--mono)}

/* ---------- hub ---------- */
.hero{padding:clamp(36px,8vh,96px) 0 clamp(28px,5vh,56px);position:relative}
.hero h1 span{color:var(--accent)}
.doors{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:30px}
.hero .lede{font-family:var(--display);font-weight:600;text-transform:uppercase;font-size:clamp(32px,4.4vw,54px);line-height:.95;color:var(--accent);margin-top:10px;padding-top:.08em}
.door{display:flex;flex-direction:column;gap:2px;padding:16px 18px;border:1px solid var(--rule);border-radius:6px;text-decoration:none;color:var(--fg);
  background:var(--bg-2);transition:border-color .2s,transform .25s var(--ease)}
.door:hover{border-color:var(--accent);transform:translateY(-2px)}
.door b{font-family:var(--display);font-weight:600;font-size:27px;letter-spacing:.04em;text-transform:uppercase;line-height:1;padding-top:3px}
.door span{color:var(--dim);font-size:15px;line-height:1.35}
.door.primary{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,var(--bg-2))}

.rail{display:flex;align-items:flex-end;gap:0;height:22px;margin:0}
.rail i{flex:1;position:relative;height:100%}
.rail i::before{content:"";position:absolute;left:50%;bottom:0;width:2px;height:12px;background:var(--rule)}
.rail i::after{content:"";position:absolute;left:calc(50% - 7px);bottom:12px;width:16px;height:3px;background:var(--rule)}
.rail i.on::before,.rail i.on::after{background:var(--accent)}
.rail .finish{flex:none;width:3px;height:100%;margin-left:6px;background:repeating-linear-gradient(var(--fg) 0 3px,transparent 3px 6px)}

.journeys{list-style:none;margin:0;padding:0;display:grid;gap:22px}
.journey{border-top:2px solid var(--rule);padding-top:20px;display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
@media (min-width:900px){.journey{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px}}
.journey .num{font-family:var(--mono);color:var(--accent);font-size:14px;letter-spacing:.12em}
.journey h2{margin:6px 0 10px}
.journey .sum{color:var(--dim);max-width:44ch}
.lessons{list-style:none;margin:0;padding:0;display:grid;gap:6px;counter-reset:l}
.lessons a{display:grid;grid-template-columns:2.6em 1fr auto;align-items:baseline;gap:10px;padding:12px 14px;border-radius:6px;text-decoration:none;color:var(--fg);
  background:var(--bg-2);border:1px solid transparent;transition:border-color .2s,background .2s}
.lessons a:hover{border-color:var(--accent)}
.lessons .n{font-family:var(--mono);color:var(--faint);font-size:14px}
.lessons .t{font-family:var(--display);font-size:25px;font-weight:500;letter-spacing:.03em;text-transform:uppercase;line-height:1.02;padding-top:3px}
.lessons .p{grid-column:2/4;color:var(--dim);font-size:15px;line-height:1.4}
.lessons .meta{font-family:var(--mono);font-size:12px;color:var(--faint);white-space:nowrap}

/* ---------- badges ---------- */
.badges{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 8px 2px;border-radius:3px;border:1px solid currentColor;color:var(--dim);line-height:1.3;white-space:nowrap}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge.founder{color:var(--accent)}
.badge.open,.badge.partial,.badge.unresolved{color:var(--amber)}
html[data-theme="sun"] .badge.open,html[data-theme="sun"] .badge.partial,html[data-theme="sun"] .badge.unresolved{color:#8a5a00}
.badge.unproven{color:var(--dim)}
.badge.synthesis{color:var(--faint);font-style:italic}
.badge.verified{color:var(--go)}

/* ---------- lesson read ---------- */
.lesson-head{padding:clamp(28px,6vh,64px) 0 26px;border-bottom:1px solid var(--rule)}
.lesson-head h1{font-size:clamp(46px,8vw,96px)}
.crumbs{font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:14px}
.crumbs a{color:var(--dim);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:4px 20px 0;border-radius:6px;text-decoration:none;cursor:pointer;
  font-family:var(--display);font-weight:600;font-size:23px;letter-spacing:.06em;text-transform:uppercase;border:1.5px solid var(--rule);background:var(--bg-2);color:var(--fg)}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--carbon)}
html[data-theme="sun"] .btn.primary{color:#fff}
.btn kbd{font-family:var(--mono);font-size:12px;border:1px solid currentColor;border-radius:3px;padding:1px 5px;opacity:.7;margin-top:-3px}

.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:34px 0 80px}
@media (min-width:1020px){.layout{grid-template-columns:230px minmax(0,1fr)}}
.toc{display:none}
@media (min-width:1020px){.toc{display:block;position:sticky;top:78px;align-self:start;max-height:calc(100vh - 100px);overflow:auto}}
.toc ol{list-style:none;margin:0;padding:0;border-left:2px solid var(--rule)}
.toc a{display:block;padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;text-decoration:none;color:var(--dim);font-size:14px;line-height:1.3}
.toc a:hover,.toc a.here{color:var(--fg);border-left-color:var(--accent)}
.toc .sec{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);padding:14px 0 4px 14px}

.screen-card{scroll-margin-top:80px;padding:28px 0;border-bottom:1px solid var(--rule)}
.screen-card:first-child{padding-top:0}
.screen-card .kicker{display:flex;gap:12px;align-items:baseline}
.screen-card .kicker .idx{color:var(--faint)}
.screen-card h2{font-size:clamp(34px,4.4vw,50px);margin-bottom:14px}
.lines{font-size:clamp(20px,2vw,24px);line-height:1.38;font-weight:500;margin:0 0 6px;max-width:44ch}
.lines span{display:block;margin-bottom:.25em}
.section-break{padding:44px 0 6px}
.section-break h2{color:var(--accent);font-size:clamp(40px,6vw,72px)}
.section-break p{color:var(--dim);max-width:52ch}

details.notes{margin-top:14px;border:1px solid var(--rule);border-radius:6px;background:var(--bg-2)}
details.notes summary{cursor:pointer;list-style:none;padding:10px 14px;font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);display:flex;gap:8px;align-items:center;min-height:44px}
details.notes summary::-webkit-details-marker{display:none}
details.notes summary::before{content:"+";font-size:18px;width:14px;color:var(--accent)}
details.notes[open] summary::before{content:"\2212"}
details.notes .body{padding:0 16px 14px}
details.notes ul{margin:0;padding-left:20px}
details.notes li{margin-bottom:6px}
.notes-open details.notes{display:block}

.cue{display:grid;gap:4px;margin:14px 0;padding:14px 16px;border-left:4px solid var(--go);background:var(--bg-2);border-radius:0 6px 6px 0}
.cue .say{font-family:var(--display);font-size:clamp(28px,3.2vw,38px);font-weight:600;text-transform:uppercase;line-height:1;letter-spacing:.02em;padding-top:4px}
.cue .say::before{content:"\201C"}.cue .say::after{content:"\201D"}
.cue dl{display:grid;grid-template-columns:auto 1fr;gap:2px 12px;margin:6px 0 0;font-size:15px}
.cue dt{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);padding-top:4px}
.cue dd{margin:0;color:var(--dim)}
.cue.anti{border-left-color:var(--stop)}

.sources{font-size:14px;color:var(--faint);margin-top:12px}
.sources b{font-family:var(--mono);font-weight:400;font-size:11px;letter-spacing:.12em;text-transform:uppercase;margin-right:6px}
.sources code{font-family:var(--mono);font-size:13px;color:var(--dim);background:var(--bg-2);padding:1px 6px;border-radius:3px;white-space:nowrap}
.panel{border:1px solid var(--rule);border-radius:8px;padding:20px 22px;background:var(--bg-2);margin:26px 0}
.panel h3{margin-bottom:10px}
.panel.open-list{border-color:color-mix(in srgb,var(--amber) 55%,var(--rule))}
.panel ul{margin:0;padding-left:20px}
.panel li{margin-bottom:8px}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:34px}
.pager a{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border:1px solid var(--rule);border-radius:6px;text-decoration:none;color:var(--fg)}
.pager a:hover{border-color:var(--accent)}
.pager .dir{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.pager .t{font-family:var(--display);font-size:24px;text-transform:uppercase;line-height:1;padding-top:3px}
.pager .next{text-align:right;grid-column:2}

/* ---------- figures ---------- */
figure.fig{margin:18px 0;padding:16px;border:1px solid var(--rule);border-radius:8px;background:var(--bg-2)}
figure.fig svg{display:block;width:100%;height:auto}
figure.fig figcaption{font-size:14px;color:var(--dim);margin-top:10px}
.fig text{font-family:var(--mono);fill:var(--dim);font-size:12px}
.fig .lbl{font-family:var(--display);fill:var(--fg);font-size:20px;text-transform:uppercase}
.fig .acc{stroke:var(--accent);fill:none}
.fig .accf{fill:var(--accent)}
.fig .rl{stroke:var(--rule)}
.fig .fg{stroke:var(--fg)}
.fig .stop{stroke:var(--stop)}

.ladder{list-style:none;margin:0;padding:0 0 0 18px;border-left:4px solid var(--rule);border-right:4px solid var(--rule)}
.ladder li{position:relative;display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 16px;padding:12px 14px;border-bottom:3px solid var(--rule)}
.ladder li:last-child{border-bottom:0}
.ladder .ll{font-family:var(--display);font-size:24px;text-transform:uppercase;line-height:1;padding-top:3px}
.ladder .lv b{font-family:var(--mono);font-weight:400;font-size:20px;color:var(--accent)}
.ladder .lv small{color:var(--dim);font-size:14px}
.ladder .lbar{position:absolute;left:0;bottom:-3px;height:3px;background:var(--accent)}
.slide .ladder .ll{font-size:40px}.slide .ladder .lv b{font-size:34px}.slide .ladder .lv small{font-size:22px}.slide .ladder li{padding:16px 20px}
.intervals{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.intervals li{font-family:var(--mono);font-size:16px;padding:8px 12px;border:1.5px solid var(--accent);border-radius:4px;color:var(--fg)}
.intervals li{position:relative}
.intervals li+li{margin-left:16px}
.intervals li+li::before{content:"\203A";position:absolute;left:-17px;top:50%;transform:translateY(-52%);color:var(--accent);font-size:20px}
.intervals li.gap{border-style:dashed;border-color:var(--rule);color:var(--faint)}
.slide .intervals li{font-size:26px;padding:10px 16px}
.checker{display:grid;gap:12px}
.checker .cin{display:flex;flex-wrap:wrap;gap:10px}
.checker label{display:flex;flex-direction:column;gap:4px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.checker input{width:120px;min-height:50px;font-family:var(--mono);font-size:22px;padding:0 10px;border-radius:6px;border:1.5px solid var(--rule);background:var(--bg);color:var(--fg)}
.checker small{font-size:12px}
.checker .crule{margin:0;color:var(--dim)}.checker .crule b{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-right:8px}
.checker .cout{margin:0;font-family:var(--display);font-size:28px;text-transform:uppercase;line-height:1;padding-top:4px}
.checker .cout.pass{color:var(--go)}.checker .cout.fail{color:var(--stop)}
.slide .checker input{width:170px;min-height:70px;font-size:34px}.slide .checker label{font-size:16px}.slide .checker .cout{font-size:44px}.slide .checker .crule{font-size:24px}

/* ---------- trackside ---------- */
.ts-filter{display:flex;gap:8px;flex-wrap:wrap;padding:16px 0;position:sticky;top:58px;background:var(--bg);z-index:5;border-bottom:1px solid var(--rule)}
.ts-filter input{flex:1 1 240px;min-height:52px;font-size:19px;padding:0 16px;border-radius:6px;border:1.5px solid var(--rule);background:var(--bg-2);color:var(--fg);font-family:var(--text)}
.ts-group{padding:26px 0 6px}
.ts-group h2{font-size:clamp(30px,5vw,44px);margin-bottom:12px}
.ts-group h2 a{color:inherit;text-decoration:none}
.ts-cards{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(min(100%,340px),1fr))}
.ts-card{padding:18px 18px 16px;border-radius:8px;background:var(--bg-2);border-left:6px solid var(--go)}
.ts-card.anti{border-left-color:var(--stop)}
.ts-card .say{font-family:var(--display);font-weight:600;font-size:clamp(36px,9vw,48px);line-height:.95;text-transform:uppercase;letter-spacing:.01em;padding-top:5px}
.ts-card .do{font-size:18px;line-height:1.35;margin-top:10px}
.ts-card .why{font-size:15px;color:var(--dim);margin-top:6px}
.ts-card .from{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);margin-top:10px}
.hidden{display:none!important}

/* ---------- field / tape ---------- */
.seg{display:inline-flex;flex-wrap:wrap;gap:4px;padding:4px;border-radius:8px;background:var(--bg-2);border:1px solid var(--rule)}
.seg button{min-height:46px;padding:4px 16px 0;border:0;border-radius:5px;background:none;color:var(--dim);cursor:pointer;
  font-family:var(--display);font-size:22px;letter-spacing:.05em;text-transform:uppercase}
.seg button[aria-pressed="true"]{background:var(--fg);color:var(--bg)}
.controls{display:grid;gap:14px;margin:22px 0}
.controls .row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}
.controls .lab{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);min-width:80px}
.swatch{display:inline-block;width:14px;height:14px;border-radius:3px;vertical-align:-1px;border:1px solid rgba(127,127,127,.6)}
.tape-out{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
@media (min-width:900px){.tape-out{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}}
.marks{width:100%;border-collapse:collapse;font-family:var(--mono)}
.marks th,.marks td{padding:10px 12px;border-bottom:1px solid var(--rule);text-align:right}
.marks th:first-child,.marks td:first-child{text-align:left}
.marks thead th{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);font-weight:400}
.marks td.big{font-size:clamp(24px,5vw,30px);color:var(--fg)}
.marks td.h{font-family:var(--display);font-size:24px}
.marks tr.diff td{background:color-mix(in srgb,var(--amber) 16%,transparent)}
.marks .pub{font-size:13px;color:var(--faint)}
.tape-mini th,.tape-mini td{padding:6px 8px;font-size:15px}
.tape-mini td.h{font-size:18px}
.slide .tape-mini th,.slide .tape-mini td{font-size:22px;padding:6px 14px}
.rule-box{border-left:4px solid var(--accent);padding:12px 16px;background:var(--bg-2);border-radius:0 6px 6px 0;font-size:16px}
.rule-box b{font-family:var(--display);font-size:22px;letter-spacing:.04em;text-transform:uppercase;font-weight:600}
.track svg{width:100%;height:auto;display:block}
@media (max-width:600px){.track{display:none}}
@media (max-width:560px){.brand b{display:none}.top nav a,.icon-btn{padding:0 8px;font-size:19px}.top nav{margin-left:2px;-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}.top .tools .lab{display:none}.top .wrap{gap:6px}}

.run{list-style:none;margin:0;padding:0;position:relative}
.run::before{content:"";position:absolute;left:21px;top:8px;bottom:8px;width:2px;background:var(--rule)}
.run-step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;padding:0 0 22px;position:relative}
.run-step .rn{width:44px;height:44px;border-radius:50%;background:var(--bg);border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:15px;color:var(--accent);position:relative;z-index:1}
.run-step .rb{padding:2px 0 16px;border-bottom:1px solid var(--rule);min-width:0}
.run-step .rh{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}
.run-step h3{font-size:30px}
.run-step .theme{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.run-step .theme b{font-family:var(--display);font-weight:600;font-size:22px;letter-spacing:.04em;color:var(--go);margin-left:6px}
.run-step .rm{font-family:var(--mono);font-size:13px;color:var(--faint);margin:4px 0 8px;display:flex;flex-wrap:wrap;gap:4px 14px}
.run-step .hc{color:var(--dim)}.run-step .hc.open{color:var(--amber)}
.run-step .say{font-family:var(--display);font-weight:600;font-size:30px;text-transform:uppercase;line-height:1;margin:6px 0 8px;padding-top:3px}
.run-step .say::before{content:"\201C"}.run-step .say::after{content:"\201D"}
.run-step .menu{margin:8px 0}
.run-step .mg{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.run-step .menu ul{margin:4px 0 0;padding-left:20px}
.run-step .dose b,.budget .brow label{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-right:8px}
.budget input,.budget select{min-height:46px;font-family:var(--mono);font-size:19px;padding:0 10px;border-radius:6px;border:1.5px solid var(--rule);background:var(--bg);color:var(--fg)}
.budget table input{width:90px}
.budget [data-b=cap]{width:110px}
.budget .badge{white-space:normal}
.budget td{word-break:normal;overflow-wrap:anywhere}
.budget .brow{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin:12px 0}
.budget .brow label{display:flex;align-items:center;gap:10px}
.budget .bout{font-family:var(--display);font-size:clamp(28px,4vw,40px);text-transform:uppercase;line-height:1;margin:16px 0 6px;padding-top:4px}
.budget .bout.over{color:var(--stop)}.budget .bout.ok{color:var(--go)}

/* ---------- glossary / sources ---------- */
.gl{display:grid;gap:0;margin:20px 0 60px}
.gl div{display:grid;grid-template-columns:minmax(0,1fr);gap:4px;padding:14px 0;border-bottom:1px solid var(--rule)}
@media (min-width:760px){.gl div{grid-template-columns:260px minmax(0,1fr);gap:24px}}
.gl dt{font-family:var(--display);font-size:25px;text-transform:uppercase;line-height:1;padding-top:3px}
.gl dd{margin:0;color:var(--dim)}
table.src{width:100%;border-collapse:collapse;font-size:15px;margin:16px 0 60px}
table.src th,table.src td{text-align:left;padding:10px 10px;border-bottom:1px solid var(--rule);vertical-align:top}
table.src th{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);font-weight:400}
table.src code{font-family:var(--mono);font-size:13px}

footer.site{border-top:1px solid var(--rule);padding:26px 0 40px;margin-top:40px;color:var(--faint);font-size:14px}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:10px 30px;justify-content:space-between}

/* ---------- help ---------- */
.help{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.6)}
.help.on{display:flex}
.help .box{background:var(--bg-2);color:var(--fg);border:1px solid var(--rule);border-radius:10px;padding:26px 30px;max-width:560px;width:calc(100% - 32px)}
.help h3{margin-bottom:14px}
.help dl{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;margin:0}
.help dt{text-align:right}
kbd{font-family:var(--mono);font-size:13px;background:var(--bg-3);border:1px solid var(--rule);border-bottom-width:2px;border-radius:4px;padding:1px 7px;color:var(--fg);white-space:nowrap}

/* =================== TEACH MODE (deck) =================== */
.deck{position:fixed;inset:0;z-index:60;background:var(--bg);display:none;overflow:hidden}
body.teaching .deck{display:block}
body.teaching{overflow:hidden}
.stage{position:absolute;left:50%;top:50%;width:1600px;height:900px;transform:translate(-50%,-50%) scale(var(--s,1));transform-origin:center}
.slide{position:absolute;inset:0;padding:70px 110px 120px;display:flex;flex-direction:column;opacity:0;visibility:hidden;
  transform:translateY(10px);transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s}
.slide.on{opacity:1;visibility:visible;transform:none}
.slide .slide-notes{display:none}
.stage:focus,.stage:focus-visible{outline:none}
.slide .kicker{font-size:22px;margin-bottom:22px;display:flex;gap:22px}
.slide .kicker .idx{color:var(--faint)}
.slide h2{font-size:132px;line-height:.86;max-width:1380px;text-wrap:balance}
.slide .lines{font-size:44px;line-height:1.28;max-width:1240px;margin-top:34px;font-weight:500}
.slide .lines span{margin-bottom:.22em}
.slide .body{flex:1;display:flex;flex-direction:column;justify-content:safe center;min-height:0}
.slide .body.fitted{transform-origin:left top}
.slide .body.split{display:grid;grid-template-columns:minmax(0,11fr) minmax(0,13fr);gap:64px;align-items:center;align-content:safe center}
.slide .body.split h2{font-size:104px}
.slide .body.split .lines{font-size:36px;margin-top:24px}
.slide .body.split .cue .say{font-size:50px}
.slide .body.split .cb figure.fig{margin:0}
.slide .body.split .cb .fig svg{max-height:640px}
.slide .body.wide{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px 60px;align-content:safe center;align-items:start}
.slide .body.wide h2{font-size:104px}
.slide .body.wide .lines{font-size:34px;margin-top:20px}
.slide .body.wide .cc .cue{margin:0 0 14px}
.slide .body.wide .cc .cue .say{font-size:46px}
.slide .body.wide .cf{grid-column:1/-1}
.slide .body.wide .cf figure.fig{margin:0}
.slide .cue{margin:28px 0 0;padding:20px 26px;max-width:1240px}
.slide .cue .say{font-size:64px}
.slide .cue dl{font-size:24px}
.slide .cue dt{font-size:15px;padding-top:8px}
.slide .badges .badge{font-size:16px;padding:4px 10px 3px}
.slide.title-slide h2{font-size:190px}
.slide.title-slide .lines{color:var(--dim)}
.slide.sec-slide{justify-content:center}
.slide.sec-slide h2{color:var(--accent);font-size:170px}
.slide figure.fig{margin-top:26px;max-width:1300px;background:none;border:0;padding:0}
.slide figure.fig figcaption{font-size:22px}
.slide table.src{font-size:26px}.slide table.src th{font-size:16px}
.slide .fig text{font-size:15px}.slide .fig .lbl{font-size:24px}
.slide .more{font-family:var(--mono);font-size:18px;color:var(--faint);margin-top:18px}
.deck-chrome{position:absolute;left:110px;right:110px;bottom:42px;display:flex;align-items:center;gap:30px;
  font-family:var(--mono);font-size:18px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.deck-chrome .rail{flex:1;height:30px}
.deck-chrome .rail i::before{height:16px;width:3px}
.deck-chrome .rail i::after{bottom:16px;width:22px;left:calc(50% - 10px);height:4px}
.deck-chrome .rail .finish{height:30px;width:5px}
.deck-tools{position:fixed;top:12px;right:12px;z-index:70;display:flex;gap:6px;opacity:.0;transition:opacity .3s}
body.teaching .deck-tools{display:flex}
.deck:hover~.deck-tools,.deck-tools:hover,.deck-tools:focus-within,body.touch .deck-tools{opacity:1}
.deck-tools button,.deck-tools a{min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center;padding:4px 12px 0;
  border-radius:6px;border:1px solid var(--rule);background:var(--bg-2);color:var(--fg);cursor:pointer;text-decoration:none;
  font-family:var(--display);font-size:20px;letter-spacing:.06em;text-transform:uppercase}
.deck-tools{display:none}
.deck-notes{position:fixed;left:0;right:0;bottom:0;z-index:65;height:0;overflow:auto;background:var(--bg-2);border-top:1px solid var(--rule);transition:height .3s var(--ease)}
body.notes-on .deck-notes{height:34vh}
.deck-notes .inner{max-width:1100px;margin:0 auto;padding:20px 30px 30px;font-size:21px;line-height:1.45}
.deck-notes h4{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}
.deck-notes .none{color:var(--faint)}
.deck-notes .src{font-size:14px;color:var(--faint);margin-top:12px}
.overview{position:fixed;inset:0;z-index:75;overflow:auto;padding:30px;background:var(--bg);display:none}
body.grid-on .overview{display:block}
.overview h3{margin:0 0 16px}
.overview ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px}
.overview button{width:100%;text-align:left;padding:12px 14px;border-radius:6px;border:1px solid var(--rule);background:var(--bg-2);color:var(--fg);cursor:pointer;min-height:76px}
.overview button .i{font-family:var(--mono);font-size:12px;color:var(--faint);display:block}
.overview button .t{font-family:var(--display);font-size:22px;text-transform:uppercase;line-height:1;display:block;padding-top:4px}
.overview button.sec{border-color:var(--accent)}
.overview button.cur{outline:3px solid var(--accent)}
body.presenter .stage{transform:translate(-50%,-50%) scale(calc(var(--s) * .6)) translateY(-30%)}
body.presenter .deck-notes{height:46vh}

/* Phone held upright: the deck re-lays itself tall instead of shrinking a 16:9 stage to a strip. */
@media (max-aspect-ratio:4/5){
  .stage{width:100vw;height:100vh;height:100dvh;transform:none;left:0;top:0}
  .slide{padding:64px 22px 92px}
  .slide h2,.slide.title-slide h2,.slide.sec-slide h2{font-size:clamp(46px,13vw,76px)}
  .slide .lines{font-size:clamp(21px,5.6vw,28px);margin-top:18px}
  .slide .kicker{font-size:13px;margin-bottom:12px}
  .slide .cue{padding:14px 16px;margin-top:16px}
  .slide .cue .say{font-size:clamp(30px,8.4vw,44px)}
  .slide .cue dl{font-size:16px}.slide .cue dt{font-size:11px;padding-top:4px}
  .slide .badges .badge{font-size:11px}
  .slide figure.fig figcaption{font-size:14px}
  .slide .more{font-size:13px}
  .deck-chrome{left:22px;right:22px;bottom:22px;font-size:12px;gap:14px}
  .deck-chrome .rail{height:20px}
  .deck-chrome .rail i::before{height:10px;width:2px}.deck-chrome .rail i::after{bottom:10px;width:12px;left:calc(50% - 5px);height:3px}
  .deck-chrome .rail .finish{height:20px;width:3px}
  .slide .body{justify-content:flex-start;overflow:auto}
  .slide .body.split,.slide .body.wide{display:flex;flex-direction:column;gap:16px}
  .slide .body.wide h2{font-size:clamp(46px,13vw,76px)}
  .slide .body.wide .lines{font-size:clamp(21px,5.6vw,28px)}
  .slide .body.wide .cc .cue .say{font-size:clamp(30px,8.4vw,44px)}
  .slide .body.split h2{font-size:clamp(46px,13vw,76px)}
  .slide .body.split .lines{font-size:clamp(21px,5.6vw,28px)}
  .slide .body.split .cue .say{font-size:clamp(30px,8.4vw,44px)}
}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media (prefers-contrast:more){:root{--dim:var(--fg);--faint:var(--chalk-dim)}}

/* ---------- print ---------- */
@media print{
  :root,html[data-theme="sun"]{--bg:#fff;--bg-2:#fff;--bg-3:#fff;--rule:#999;--fg:#000;--dim:#222;--faint:#444;--accent:#000;--go:#000;--stop:#000}
  body{font-size:11pt}
  .top,.toc,.actions,.pager,.ts-filter,.deck,.deck-tools,.deck-notes,.overview,.help,footer.site,.no-print{display:none!important}
  details.notes{border:0;background:none}
  details.notes summary{padding:0;min-height:0}
  details.notes:not([open]) .body{display:block}
  .screen-card{break-inside:avoid;padding:10pt 0}
  h1{font-size:40pt}h2{font-size:22pt}
  .lines{font-size:13pt}
  .cue{border-left:3pt solid #000;break-inside:avoid}
  .ts-card{border:1pt solid #000;break-inside:avoid}
  .print-sheet{break-after:page}
  .print-sheet:last-child{break-after:auto}
  a{color:#000;text-decoration:none}
  .marks td{font-size:15pt;padding:5pt 8pt}
  .marks td.h{font-size:15pt}
  .marks th{font-size:9pt}
  .swatch{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .ts-card .say{font-size:22pt}
}