/* Digital Nagarik — course stylesheet
   Layout concept: a bilingual workbook. Sticky top bar, a module rail on the left,
   a ~68ch handout column for notes, and full-width "Lab" panels for simulations.
   Colour comes from Nepal's own world: flag blue (AI), crimson (law),
   a river teal (cyber) and marigold for highlights and achievements. */

@font-face{font-family:"Anek Devanagari";src:url("../fonts/anek-devanagari-700.woff2") format("woff2");font-weight:500 700;font-display:swap}
@font-face{font-family:"Anek Devanagari";src:url("../fonts/anek-devanagari-800.woff2") format("woff2");font-weight:800 900;font-display:swap}
@font-face{font-family:"Mukta";src:url("../fonts/mukta-400.woff2") format("woff2");font-weight:300 400;font-display:swap}
@font-face{font-family:"Mukta";src:url("../fonts/mukta-600.woff2") format("woff2");font-weight:500 600;font-display:swap}
@font-face{font-family:"Mukta";src:url("../fonts/mukta-700.woff2") format("woff2");font-weight:700 800;font-display:swap}

:root{
  --paper:#F4F6FB; --surface:#FFFFFF; --surface-2:#EEF1F8; --ink:#131A33; --muted:#566080; --line:#DBE0EC;
  --ai:#2343B0; --ai-soft:#E6EBFA;
  --cyber:#08796E; --cyber-soft:#DDF2EE;
  --law:#B0103A; --law-soft:#FAE5EA;
  --mari:#D98A00; --mari-soft:#FCF0D6;
  --good:#1C8A4C; --good-soft:#E1F4E8; --bad:#C2282B; --bad-soft:#FBE4E3; --warn:#A86300;
  --acc:var(--ai); --acc-soft:var(--ai-soft);
  --shadow:0 1px 2px rgba(19,26,51,.06),0 6px 24px rgba(19,26,51,.07);
  --display:"Anek Devanagari","Mukta","Noto Sans Devanagari",system-ui,sans-serif;
  --body:"Mukta","Noto Sans Devanagari","Segoe UI",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --r:12px; --r-sm:8px;
  --top-h:60px;
  --step--1:clamp(.82rem,.8rem + .1vw,.88rem);
  --step-0:clamp(1rem,.97rem + .15vw,1.08rem);
  --step-1:clamp(1.15rem,1.08rem + .3vw,1.3rem);
  --step-2:clamp(1.35rem,1.2rem + .6vw,1.7rem);
  --step-3:clamp(1.7rem,1.4rem + 1.2vw,2.4rem);
  --step-4:clamp(2.1rem,1.6rem + 2.2vw,3.4rem);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0D1120; --surface:#151A2D; --surface-2:#1B2138; --ink:#E7EAF5; --muted:#99A2C0; --line:#283050;
    --ai:#86A0FF; --ai-soft:#1C2550; --cyber:#43CDB8; --cyber-soft:#0F302C; --law:#FF7895; --law-soft:#3B1623;
    --mari:#F4B83E; --mari-soft:#3A2B0C; --good:#4CCB7F; --good-soft:#123222; --bad:#FF6D6A; --bad-soft:#3A1716; --warn:#F2A33A;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 28px rgba(0,0,0,.35); color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0D1120; --surface:#151A2D; --surface-2:#1B2138; --ink:#E7EAF5; --muted:#99A2C0; --line:#283050;
  --ai:#86A0FF; --ai-soft:#1C2550; --cyber:#43CDB8; --cyber-soft:#0F302C; --law:#FF7895; --law-soft:#3B1623;
  --mari:#F4B83E; --mari-soft:#3A2B0C; --good:#4CCB7F; --good-soft:#123222; --bad:#FF6D6A; --bad-soft:#3A1716; --warn:#F2A33A;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 28px rgba(0,0,0,.35); color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--top-h) + 16px)}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:var(--step-0);line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--surface)}
html[lang="ne"] body{line-height:1.8}
img,svg,canvas{max-width:100%}
a{color:var(--acc)}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--mari);outline-offset:2px;border-radius:4px}
[hidden]{display:none!important}
h1,h2,h3,h4{font-family:var(--display);line-height:1.2;text-wrap:balance;margin:0}
p{margin:0}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}
.ne{font-family:var(--body)}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--surface);border-bottom:1px solid var(--line)}
.topbar-in{height:var(--top-h);display:flex;align-items:center;gap:12px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);min-width:0}
.brand-mark{width:26px;height:32px;flex:none}
.brand-mark path{fill:var(--law)}
.brand-mark circle{fill:var(--surface)}
.brand-mark path{stroke:var(--ai);stroke-width:2.4;stroke-linejoin:round}
.brand-mark.big{width:54px;height:66px}
.brand-text{display:flex;flex-direction:column;line-height:1.1;min-width:0}
.brand-text b{font-family:var(--display);font-size:1.12rem;font-weight:800;letter-spacing:.01em}
.brand-text small{font-size:.74rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topnav{display:flex;gap:2px;margin-left:12px}
.topnav a{padding:6px 10px;border-radius:8px;text-decoration:none;color:var(--muted);font-weight:600;font-size:.93rem;white-space:nowrap}
.topnav a:hover{background:var(--surface-2);color:var(--ink)}
.topnav a.on{color:var(--ink);background:var(--surface-2)}
.top-tools{margin-left:auto;display:flex;align-items:center;gap:8px}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:999px;padding:2px;background:var(--surface-2)}
.lang-switch button{border:0;background:none;padding:4px 11px;border-radius:999px;cursor:pointer;font-weight:700;font-size:.85rem;color:var(--muted)}
.lang-switch button.on{background:var(--ink);color:var(--surface)}
.icon-btn{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);background:var(--surface);border-radius:10px;cursor:pointer;flex:none}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:hover{background:var(--surface-2)}
.rail-toggle{display:none}
.progress-pill{display:flex;align-items:center;gap:6px;text-decoration:none;color:var(--ink);font-weight:700;font-size:.85rem;font-variant-numeric:tabular-nums}
.progress-pill svg{width:30px;height:30px;transform:rotate(-90deg)}
.pp-bg{fill:none;stroke:var(--line);stroke-width:4}
.pp-fg{fill:none;stroke:var(--mari);stroke-width:4;stroke-linecap:round;stroke-dasharray:94.25;stroke-dashoffset:94.25;transition:stroke-dashoffset .6s}

/* ---------- shell & rail ---------- */
.shell{display:grid;grid-template-columns:290px minmax(0,1fr);min-height:calc(100vh - var(--top-h))}
.rail{position:sticky;top:calc(var(--top-h) + env(safe-area-inset-top,0px));height:calc(100vh - var(--top-h) - env(safe-area-inset-top,0px));overflow:auto;border-right:1px solid var(--line);background:var(--surface);padding:14px 10px 30px max(10px,env(safe-area-inset-left,0px))}
.rail h4{font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);padding:14px 10px 6px;font-family:var(--body);font-weight:700;display:flex;align-items:center;gap:8px}
.rail h4 i{width:9px;height:9px;border-radius:2px;display:inline-block}
.rail a{display:grid;grid-template-columns:30px 1fr auto;align-items:center;gap:8px;padding:7px 10px;border-radius:9px;text-decoration:none;color:var(--ink);font-size:.92rem;line-height:1.3}
.rail a:hover{background:var(--surface-2)}
.rail a.on{background:var(--acc-soft)}
.rail .num{font-family:var(--mono);font-size:.72rem;color:var(--muted);font-weight:600}
.rail .chk{width:18px;height:18px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center}
.rail .chk.done{background:var(--good);border-color:var(--good)}
.rail .chk.done::after{content:"";width:8px;height:5px;border:2px solid #fff;border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px)}
.rail .chk.part{border-color:var(--mari)}
.rail-extra a{grid-template-columns:30px 1fr auto}
.rail-scrim{position:fixed;inset:0;background:rgba(10,14,30,.45);z-index:39}
.view{min-width:0;outline:none}
.wrap{max-width:1100px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:28px 64px}
.site-foot{border-top:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:.85rem;padding-block:18px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));text-align:center}

@media (max-width:1020px){
  .shell{grid-template-columns:minmax(0,1fr)}
  .rail{position:fixed;left:0;top:0;bottom:0;height:auto;width:min(320px,86vw);z-index:40;transform:translateX(-102%);transition:transform .25s;padding-top:calc(env(safe-area-inset-top,0px) + 14px)}
  .rail.open{transform:none;box-shadow:var(--shadow)}
  .rail-toggle{display:grid}
  .topnav{display:none}
}
@media (max-width:560px){
  .progress-pill{display:none}
  .brand-text small{display:none}
  .progress-pill span{display:none}
  .topbar-in{gap:8px}
  .lang-switch button{padding:4px 8px}
}

/* ---------- generic UI ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:10px;border:1px solid transparent;background:var(--acc);color:var(--surface);font-weight:700;cursor:pointer;text-decoration:none;font-size:.95rem;line-height:1.2}
.btn:hover{filter:brightness(1.07)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{background:var(--surface-2)}
.btn.sm{padding:6px 12px;font-size:.85rem;border-radius:8px}
.btn.mari{background:var(--mari);color:#1a1300}
.btn:disabled{opacity:.45;cursor:not-allowed}
.chip{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;font-size:.78rem;font-weight:700;background:var(--surface-2);color:var(--muted);white-space:nowrap}
.chip.free{background:var(--good-soft);color:var(--good)}
.chip.freemium{background:var(--mari-soft);color:var(--warn)}
.chip.paid{background:var(--law-soft);color:var(--law)}
.chip.acc{background:var(--acc-soft);color:var(--acc)}
.eyebrow{font-size:.76rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--acc)}
html[lang="ne"] .eyebrow{letter-spacing:.04em;font-size:.85rem}
input[type=text],input[type=search],input[type=password],input[type=number],select,textarea{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:9px 12px;width:100%}
textarea{resize:vertical;min-height:80px}
input[type=range]{width:100%;accent-color:var(--acc)}
label{font-weight:600}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--surface);padding:10px 18px;border-radius:10px;font-weight:600;z-index:80;box-shadow:var(--shadow);max-width:90vw}
.modal{position:fixed;inset:0;z-index:90;background:rgba(10,14,30,.6);display:grid;place-items:center;padding:16px}
.modal-card{background:var(--surface);border-radius:18px;padding:30px 26px;max-width:480px;width:100%;text-align:center;box-shadow:var(--shadow);display:grid;gap:14px;justify-items:center}
.modal-card h2{font-size:var(--step-2)}
.lm-choices{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%}
.lm-btn{border:2px solid var(--line);background:var(--surface-2);border-radius:14px;padding:18px 10px;cursor:pointer;display:grid;gap:4px}
.lm-btn b{font-family:var(--display);font-size:1.4rem}
.lm-btn small{color:var(--muted)}
.lm-btn:hover{border-color:var(--ai)}

/* ---------- home ---------- */
.home-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:36px;align-items:center;padding-block:10px 26px}
.home-hero h1{font-size:var(--step-4);font-weight:800;letter-spacing:-.01em}
.home-hero h1 em{font-style:normal;color:var(--ai)}
.home-hero h1 em.c{color:var(--cyber)}
.home-hero h1 em.l{color:var(--law)}
.home-hero .lede{font-size:var(--step-1);color:var(--muted);margin-top:14px;max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-stats{display:flex;flex-wrap:wrap;gap:22px;margin-top:24px}
.hero-stats div{display:grid}
.hero-stats b{font-family:var(--display);font-size:1.6rem;line-height:1;font-variant-numeric:tabular-nums}
.hero-stats span{font-size:.82rem;color:var(--muted)}
.hero-stage{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;max-width:100%}
.hero-stage canvas{width:100%;display:block}
.hero-stage .stage-cap{padding:10px 16px 14px;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted);display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.dhaka{height:10px;border-radius:3px;margin-block:8px 30px;background:
  repeating-linear-gradient(90deg,var(--law) 0 14px,transparent 14px 18px,var(--ai) 18px 26px,transparent 26px 30px,var(--mari) 30px 36px,transparent 36px 40px,var(--cyber) 40px 48px,transparent 48px 52px);opacity:.85}
.tracks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.track{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:12px;border-top:5px solid var(--acc)}
.track h3{font-size:var(--step-2)}
.track ol{margin:0;padding:0;list-style:none;display:grid;gap:4px}
.track li a{display:flex;gap:10px;text-decoration:none;color:var(--ink);padding:5px 6px;border-radius:7px;align-items:baseline}
.track li a:hover{background:var(--acc-soft)}
.track li .n{font-family:var(--mono);font-size:.75rem;color:var(--acc);font-weight:600;flex:none;width:22px}
.track .meter{height:6px;border-radius:9px;background:var(--surface-2);overflow:hidden}
.track .meter i{display:block;height:100%;background:var(--acc);width:0;transition:width .6s}
.section-h{display:flex;align-items:end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-block:44px 18px}
.section-h h2{font-size:var(--step-3)}
.how{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.how div{padding:18px;border-radius:14px;background:var(--surface-2);display:grid;gap:6px;align-content:start}
.how b{font-family:var(--display);font-size:1.1rem}
.how svg{width:30px;height:30px;fill:none;stroke:var(--ai);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.who{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.who div{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;display:grid;gap:8px;align-content:start}
.who ul{margin:0;padding-left:20px}
.instructor{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px}
.avatar{width:72px;height:72px;border-radius:50%;background:var(--ai-soft);display:grid;place-items:center;font-family:var(--display);font-weight:800;font-size:1.6rem;color:var(--ai)}
.sos-strip{display:flex;gap:12px;flex-wrap:wrap;align-items:center;background:var(--law-soft);border-radius:14px;padding:14px 18px;margin-top:22px}
.sos-strip b{color:var(--law)}
@media (max-width:900px){.home-hero{grid-template-columns:minmax(0,1fr)}.tracks{grid-template-columns:minmax(0,1fr)}.how{grid-template-columns:repeat(2,minmax(0,1fr))}.who{grid-template-columns:minmax(0,1fr)}}
@media (max-width:480px){.how{grid-template-columns:minmax(0,1fr)}.instructor{grid-template-columns:minmax(0,1fr)}}

/* ---------- module page ---------- */
.m-hero{background:var(--acc-soft);border-radius:20px;padding:30px 30px 26px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:start;position:relative;overflow:hidden}
.m-hero .eyebrow{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.m-hero h1{font-size:var(--step-4);font-weight:800;margin-top:8px}
.m-hero .tag{font-size:var(--step-1);color:var(--muted);margin-top:8px;max-width:60ch}
.m-meta{display:flex;gap:16px;flex-wrap:wrap;margin-top:16px;font-size:.88rem;color:var(--muted)}
.m-meta span{display:flex;gap:6px;align-items:center}
.m-icon{width:96px;height:96px;border-radius:24px;background:var(--surface);display:grid;place-items:center;box-shadow:var(--shadow)}
.m-icon svg{width:56px;height:56px;fill:none;stroke:var(--acc);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.m-grid{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:40px;margin-top:30px;align-items:start}
.m-toc{position:sticky;top:calc(var(--top-h) + 20px);font-size:.88rem;display:grid;gap:2px;border-left:2px solid var(--line);padding-left:4px}
.m-toc b{font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);padding:0 10px 6px}
.m-toc a{color:var(--muted);text-decoration:none;padding:4px 10px;border-radius:6px;line-height:1.35}
.m-toc a:hover{color:var(--ink);background:var(--surface-2)}
.m-toc .tools{display:grid;gap:6px;margin-top:14px;padding:0 6px}
@media (max-width:1180px){.m-grid{grid-template-columns:minmax(0,1fr)}.m-toc{display:none}}
@media (max-width:620px){.m-hero{grid-template-columns:minmax(0,1fr);padding:22px 18px}.m-icon{display:none}}

.objectives{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin-bottom:26px}
.objectives h3{font-size:1rem;font-family:var(--body);font-weight:700;margin-bottom:8px}
.objectives ul{margin:0;padding-left:0;list-style:none;display:grid;gap:6px}
.objectives li{display:grid;grid-template-columns:22px 1fr;gap:6px}
.objectives li::before{content:"";width:14px;height:14px;margin-top:6px;border-radius:4px;border:2px solid var(--acc)}

.notes{display:grid;gap:18px;max-width:72ch}
.notes h2{font-size:var(--step-2);margin-top:22px;padding-top:6px;scroll-margin-top:90px}
.notes h3{font-size:var(--step-1);margin-top:6px}
.notes p,.notes li{color:var(--ink)}
.notes ul,.notes ol{margin:0;padding-left:22px;display:grid;gap:6px}
.notes strong{font-weight:700}
.notes code,.kbd{font-family:var(--mono);font-size:.86em;background:var(--surface-2);padding:1px 6px;border-radius:5px;overflow-wrap:anywhere}
.notes .full{max-width:none;width:100%}
.callout{border-radius:12px;padding:14px 18px 14px 50px;position:relative;background:var(--surface);border:1px solid var(--line)}
.callout::before{position:absolute;left:14px;top:13px;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;font-weight:800;font-size:.9rem;font-family:var(--display)}
.callout .ct{display:block;font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:2px}
html[lang="ne"] .callout .ct{letter-spacing:.02em;font-size:.88rem}
.callout.key{background:var(--acc-soft);border-color:transparent}
.callout.key::before{content:"!";background:var(--acc);color:var(--surface)}
.callout.key .ct{color:var(--acc)}
.callout.nepal{background:var(--mari-soft);border-color:transparent}
.callout.nepal::before{content:"";background:var(--law);clip-path:polygon(10% 0,95% 50%,45% 50%,95% 100%,10% 100%)}
.callout.nepal .ct{color:var(--warn)}
.callout.warn{background:var(--bad-soft);border-color:transparent}
.callout.warn::before{content:"⚠";background:var(--bad);color:#fff;font-size:.8rem}
.callout.warn .ct{color:var(--bad)}
.callout.try{background:var(--good-soft);border-color:transparent}
.callout.try::before{content:"✎";background:var(--good);color:#fff}
.callout.try .ct{color:var(--good)}
.callout.teach{background:var(--surface);border:1px dashed var(--acc)}
.callout.teach::before{content:"T";background:var(--surface-2);color:var(--acc)}
.callout.teach .ct{color:var(--acc)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:grid;gap:4px;align-content:start}
.card h4{font-size:1.02rem;font-family:var(--display);font-weight:700;color:var(--acc)}
.card p{font-size:.95rem;color:var(--muted)}
.card .chip{justify-self:start}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.tbl table{border-collapse:collapse;width:100%;font-size:.93rem;min-width:520px}
.tbl th{background:var(--surface-2);text-align:left;padding:10px 12px;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
html[lang="ne"] .tbl th{letter-spacing:0;font-size:.9rem}
.tbl td{padding:10px 12px;border-top:1px solid var(--line);vertical-align:top}
.tbl td:first-child{font-weight:600}
.steps{display:grid;gap:10px;counter-reset:st;list-style:none;padding:0!important}
.steps li{display:grid;grid-template-columns:38px 1fr;gap:12px;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.steps li::before{counter-increment:st;content:counter(st);width:30px;height:30px;border-radius:50%;background:var(--acc);color:var(--surface);display:grid;place-items:center;font-weight:800;font-family:var(--display)}
html[lang="ne"] .steps li::before{content:counter(st,devanagari)}
.steps b{display:block}
.prompt-box{border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}
.prompt-box header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 12px;background:var(--surface-2);font-size:.85rem;font-weight:700;color:var(--muted)}
.prompt-box pre{margin:0;padding:12px 14px;white-space:pre-wrap;font-family:var(--mono);font-size:.86rem;line-height:1.6;overflow-wrap:anywhere}
.figure{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px}

/* ---------- lab (simulation) panels ---------- */
.lab{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;max-width:none}
.lab-head{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,var(--acc-soft),var(--surface))}
.lab-badge{font-family:var(--mono);font-size:.7rem;font-weight:600;letter-spacing:.1em;background:var(--acc);color:var(--surface);padding:3px 8px;border-radius:6px;text-transform:uppercase;flex:none}
.lab-head h3{font-size:1.08rem;font-weight:700}
.lab-hint{padding:10px 16px 0;color:var(--muted);font-size:.92rem}
.lab-body{padding:16px;display:grid;gap:14px;min-width:0}
.lab-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.lab-row > *{min-width:0}
.lab canvas{display:block;width:100%;border-radius:10px;background:var(--surface-2);touch-action:none}
.lab .out{background:var(--surface-2);border-radius:10px;padding:12px 14px;font-size:.95rem;min-height:48px}
.lab .split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px}
@media (max-width:700px){.lab .split{grid-template-columns:minmax(0,1fr)}}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;flex-wrap:wrap}
.seg button{border:0;background:var(--surface);padding:7px 12px;cursor:pointer;font-weight:600;font-size:.88rem;border-right:1px solid var(--line)}
.seg button:last-child{border-right:0}
.seg button.on{background:var(--acc);color:var(--surface)}
.meterbar{height:12px;border-radius:9px;background:var(--surface-2);overflow:hidden}
.meterbar i{display:block;height:100%;width:0;border-radius:9px;transition:width .35s,background .35s}
.big-num{font-family:var(--display);font-size:2rem;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.pill-list{display:flex;flex-wrap:wrap;gap:8px}
.tok{font-family:var(--mono);font-size:.9rem;padding:3px 6px;border-radius:6px;white-space:pre}
.sortcard{border:2px solid var(--line);border-radius:12px;padding:10px 14px;background:var(--surface);cursor:pointer;font-weight:600;text-align:left;transition:transform .15s,border-color .15s}
.sortcard:hover{transform:translateY(-2px);border-color:var(--acc)}
.sortcard.right{border-color:var(--good);background:var(--good-soft)}
.sortcard.wrong{border-color:var(--bad);background:var(--bad-soft)}
.feedback{border-radius:10px;padding:10px 14px;font-weight:500}
.feedback.ok{background:var(--good-soft);color:var(--good)}
.feedback.no{background:var(--bad-soft);color:var(--bad)}
.feedback.info{background:var(--acc-soft);color:var(--acc)}
.msg{border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--surface);display:grid;gap:6px}
.msg .from{font-size:.82rem;color:var(--muted);display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.msg .body{font-size:.96rem}
.msg .lnk{font-family:var(--mono);color:var(--ai);text-decoration:underline;cursor:help;overflow-wrap:anywhere;font-size:.88rem}
.phone{max-width:380px;margin:0 auto;border:10px solid var(--ink);border-radius:30px;background:var(--surface-2);padding:14px 10px;display:grid;gap:10px;min-height:300px}
.bubble{background:var(--surface);border-radius:14px 14px 14px 4px;padding:9px 12px;font-size:.92rem;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.bubble.me{background:var(--acc);color:var(--surface);border-radius:14px 14px 4px 14px;justify-self:end}
.toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid var(--line)}
.switch{position:relative;width:44px;height:24px;flex:none}
.switch input{opacity:0;width:0;height:0;position:absolute}
.switch span{position:absolute;inset:0;background:var(--line);border-radius:99px;cursor:pointer;transition:.2s}
.switch span::after{content:"";position:absolute;width:18px;height:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s}
.switch input:checked + span{background:var(--good)}
.switch input:checked + span::after{transform:translateX(20px)}
.switch input:focus-visible + span{outline:3px solid var(--mari);outline-offset:2px}

/* ---------- summary & quiz ---------- */
.summary{background:var(--surface);border:2px solid var(--acc);border-radius:16px;padding:20px 22px;margin-top:34px}
.summary h2{font-size:var(--step-2);margin:0 0 10px}
.summary ul{margin:0;padding-left:20px;display:grid;gap:6px}
.quiz{margin-top:34px;display:grid;gap:14px}
.quiz-head{display:flex;justify-content:space-between;align-items:end;gap:12px;flex-wrap:wrap}
.quiz-head h2{font-size:var(--step-3)}
.q{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;display:grid;gap:10px}
.q .qn{font-family:var(--mono);font-size:.75rem;color:var(--muted);font-weight:600}
.q h4{font-family:var(--body);font-size:1.05rem;font-weight:700}
.opts{display:grid;gap:8px}
.opt{display:flex;gap:10px;align-items:flex-start;border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;cursor:pointer;background:var(--surface);text-align:left}
.opt:hover{border-color:var(--acc)}
.opt .l{font-family:var(--mono);font-weight:600;color:var(--muted);flex:none}
.opt.sel{border-color:var(--acc);background:var(--acc-soft)}
.opt.ok{border-color:var(--good);background:var(--good-soft)}
.opt.no{border-color:var(--bad);background:var(--bad-soft)}
.opt:disabled{cursor:default}
.q .exp{font-size:.93rem;border-left:3px solid var(--acc);padding:4px 12px;color:var(--muted)}
.score-card{display:flex;gap:20px;align-items:center;flex-wrap:wrap;background:var(--surface-2);border-radius:14px;padding:16px 20px}
.score-card .big-num{font-size:2.6rem}
.pass{color:var(--good)} .fail{color:var(--bad)}
.m-nav{display:flex;justify-content:space-between;gap:12px;margin-top:40px;flex-wrap:wrap}
.m-nav a{flex:1 1 240px;border:1px solid var(--line);border-radius:14px;padding:14px 18px;text-decoration:none;color:var(--ink);background:var(--surface);display:grid;gap:2px}
.m-nav a:hover{border-color:var(--acc)}
.m-nav a small{color:var(--muted)}
.m-nav a.next{text-align:right}

/* ---------- toolkit / prompts / glossary ---------- */
.page-h{display:grid;gap:10px;margin-bottom:22px}
.page-h h1{font-size:var(--step-4)}
.page-h p{color:var(--muted);max-width:70ch;font-size:var(--step-1)}
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:16px}
.filters input[type=search],.filters select{flex:1 1 220px;max-width:320px;width:auto}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:grid;gap:8px;align-content:start}
.tool header{display:flex;justify-content:space-between;align-items:start;gap:8px}
.tool h4{font-family:var(--display);font-size:1.12rem}
.tool .cat{font-size:.78rem;color:var(--muted);font-weight:600}
.tool p{font-size:.93rem}
.tool dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:3px 10px;font-size:.86rem}
.tool dt{color:var(--muted);font-weight:600}
.tool dd{margin:0}
.tool .use{background:var(--surface-2);border-radius:8px;padding:8px 10px;font-size:.88rem}
.tool a.site{font-family:var(--mono);font-size:.8rem;overflow-wrap:anywhere}
.stars{color:var(--mari);letter-spacing:2px}
.gloss{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.gloss div{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.gloss b{font-family:var(--display);font-size:1.05rem;color:var(--ai)}
.gloss .alt{color:var(--muted);font-size:.86rem;margin-left:6px}
.help-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.help-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:grid;gap:6px;border-left:5px solid var(--law)}
.help-card .num{font-family:var(--mono);font-size:1.3rem;font-weight:600;color:var(--law);user-select:all;overflow-wrap:anywhere}

/* ---------- exam / certificate ---------- */
.exam-intro{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-block:18px}
.exam-intro div{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px;display:grid}
.exam-intro b{font-family:var(--display);font-size:1.7rem}
.cert-wrap{display:grid;gap:16px}
.cert-wrap canvas{width:100%;height:auto;border-radius:10px;box-shadow:var(--shadow);background:#fff}
.locked{background:var(--surface-2);border-radius:14px;padding:22px;display:grid;gap:10px;justify-items:start}
@media (max-width:600px){.exam-intro{grid-template-columns:minmax(0,1fr)}}

/* ---------- paid access ---------- */
.lockcard{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;align-items:start;background:var(--mari-soft);border-radius:16px;padding:20px 22px;margin-block:18px;max-width:none}
.lockcard .lock-ic{width:52px;height:52px;border-radius:14px;background:var(--surface);display:grid;place-items:center;font-size:1.5rem;box-shadow:var(--shadow)}
.lockcard h2{font-size:var(--step-2);margin:0 0 6px}
.lockcard p{color:var(--ink);max-width:68ch;margin-bottom:12px}
.lockmark{font-size:.8rem;opacity:.75}
.acct{display:flex;gap:6px;align-items:center}
.sitebar{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;padding-block:6px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));font-size:.8rem;background:var(--surface-2);border-bottom:1px solid var(--line);color:var(--muted)}
.sitebar a{color:var(--muted);text-decoration:none}
.sitebar a:hover{color:var(--ink)}
.sitebar b{color:var(--ink);font-weight:600}
.sitebar i{font-style:normal;opacity:.6}
@media (max-width:440px){.brand-text{display:none}}
@media (max-width:640px){.acct .acct-signin{display:none}.lockcard{grid-template-columns:minmax(0,1fr)}}
@media print{.sitebar,.acct,.lockcard{display:none!important}}

/* ---------- print (handouts) ---------- */
@media print{
  .topbar,.rail,.rail-scrim,.site-foot,.m-toc,.quiz,.m-nav,.lab,.no-print,.toast,.modal{display:none!important}
  body{background:#fff;color:#000;font-size:11pt}
  .shell{display:block}
  .wrap{max-width:none;padding:0}
  .m-hero{background:none;border:2px solid #000;border-radius:0}
  .m-grid{display:block}
  .notes{max-width:none}
  .callout,.card,.steps li,.tbl{break-inside:avoid;border:1px solid #999!important;background:#fff!important}
  .print-only{display:block!important}
  a{color:#000;text-decoration:none}
}
.print-only{display:none}