:root{
  --bar-h:54px;
  --ink:#1f2933; --muted:#5b6672; --paper:#fbf8f3; --card:#ffffff; --surface-2:#f6f1e9;
  --line:#e7e0d4; --line-strong:#cfc6b6;
  --accent:#14365c; --link:#1f4e7a;
  --banner:#14365c; --banner-key:#8f2f24; --hero-1:#14365c; --hero-2:#0e2742;
  --gold:#c8902b; --gold-soft:#f7e6bf; --hl-text:#14365c;
  --brick:#a63d2f; --qnum-bg:#fbeceb;
  --quiz-a:#e9edf2; --quiz-b:#dfe5ec;
  --shadow:0 1px 2px rgba(20,54,92,.05),0 6px 18px rgba(20,54,92,.06);
  --scrim:rgba(10,20,32,.45);
  --good:#16794b; --good-bg:#eaf7ef; --good-line:#b9e5c9;
  --bad:#b42318; --bad-bg:#fff0ee; --bad-line:#f2c3bd;
  --warn:#795000; --warn-bg:#fff7e5; --warn-line:#f0d99e;
  --focus-ring:rgba(20,54,92,.16);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ink:#e4e8ed; --muted:#9aa6b2; --paper:#0f1720; --card:#17212c; --surface-2:#1d2935;
    --line:#2a3744; --line-strong:#3b4b5b;
    --accent:#a9c9ee; --link:#8fbbea;
    --banner:#173a60; --banner-key:#7d2c22; --hero-1:#173a60; --hero-2:#0a1828;
    --gold:#d9a441; --gold-soft:rgba(217,164,65,.26); --hl-text:#f4dba0;
    --brick:#ec8b7b; --qnum-bg:rgba(236,139,123,.14);
    --quiz-a:#243140; --quiz-b:#1e2935;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 18px rgba(0,0,0,.25);
    --scrim:rgba(0,0,0,.6);
    --good:#6fd39f; --good-bg:rgba(46,160,103,.14); --good-line:rgba(111,211,159,.35);
    --bad:#f29b90; --bad-bg:rgba(236,110,95,.14); --bad-line:rgba(242,155,144,.35);
    --warn:#f0c66e; --warn-bg:rgba(240,198,110,.12); --warn-line:rgba(240,198,110,.3);
    --focus-ring:rgba(169,201,238,.25);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --ink:#e4e8ed; --muted:#9aa6b2; --paper:#0f1720; --card:#17212c; --surface-2:#1d2935;
  --line:#2a3744; --line-strong:#3b4b5b;
  --accent:#a9c9ee; --link:#8fbbea;
  --banner:#173a60; --banner-key:#7d2c22; --hero-1:#173a60; --hero-2:#0a1828;
  --gold:#d9a441; --gold-soft:rgba(217,164,65,.26); --hl-text:#f4dba0;
  --brick:#ec8b7b; --qnum-bg:rgba(236,139,123,.14);
  --quiz-a:#243140; --quiz-b:#1e2935;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 18px rgba(0,0,0,.25);
  --scrim:rgba(0,0,0,.6);
  --good:#6fd39f; --good-bg:rgba(46,160,103,.14); --good-line:rgba(111,211,159,.35);
  --bad:#f29b90; --bad-bg:rgba(236,110,95,.14); --bad-line:rgba(242,155,144,.35);
  --warn:#f0c66e; --warn-bg:rgba(240,198,110,.12); --warn-line:rgba(240,198,110,.3);
  --focus-ring:rgba(169,201,238,.25);
  color-scheme:dark;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font:17px/1.7 "Source Serif 4",Georgia,"Times New Roman",serif;overflow-wrap:break-word}
a{color:var(--link)}
.sans,.eyebrow,.sidebar,.masthead,.qnum,.quizbar button,.top,.hero p.sub,.legend{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}

/* top bar */
.masthead{position:sticky;top:0;z-index:10;height:var(--bar-h);display:flex;align-items:center;gap:10px;padding:0 10px;
  background:linear-gradient(160deg,var(--hero-1) 0%,var(--hero-2) 100%);color:#fff}
.brand{flex:1;min-width:0;text-align:center;text-decoration:none;color:#fff;line-height:1.15}
.brand .eyebrow{display:block;color:var(--gold);font-size:.6rem;margin-bottom:1px}
.brand .name{font-weight:700;font-size:1rem;letter-spacing:-.01em;white-space:nowrap}
.icon-btn{flex:0 0 auto;width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.28);border-radius:10px;background:transparent;color:#fff;cursor:pointer;padding:0}
.icon-btn:hover{background:rgba(255,255,255,.12)}
.icon-btn svg{width:20px;height:20px}
.stripes{height:6px;background:repeating-linear-gradient(90deg,var(--brick) 0 24px,#fff 24px 48px)}

/* hero (home page) */
.hero{background:linear-gradient(160deg,var(--hero-1) 0%,var(--hero-2) 100%);color:#fff;padding:34px 18px 32px;text-align:center}
.hero .eyebrow{color:var(--gold)}
.hero h1{font-size:clamp(1.75rem,6vw,2.6rem);line-height:1.15;margin:.25em 0 .35em;font-weight:700;letter-spacing:-.01em}
.hero p.sub{margin:0 auto;max-width:34em;color:#d5dfea;font-size:.95rem;line-height:1.5}

/* side panel: a drawer on phones, a fixed column on wide screens */
.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:30;width:min(300px,86vw);overflow-y:auto;overscroll-behavior:contain;
  background:var(--card);border-right:1px solid var(--line);transform:translateX(-100%);visibility:hidden;
  transition:transform .22s ease,visibility .22s}
body.nav-open .sidebar{transform:none;visibility:visible;box-shadow:0 0 40px rgba(0,0,0,.25);transition:transform .22s ease,visibility 0s}
.scrim{position:fixed;inset:0;z-index:25;background:var(--scrim);display:none}
body.nav-open .scrim{display:block}
body.nav-open{overflow:hidden}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:10px 10px 4px 20px;
  font-weight:700;color:var(--accent);font-size:.95rem}
.sidebar-head .icon-btn{color:var(--ink);border-color:var(--line)}
.sidebar-head .icon-btn:hover{background:var(--surface-2)}
.sidebar nav{padding:4px 10px 40px}
.sidebar .group{font-size:.66rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:16px 10px 6px}
.sidebar a{display:block;text-decoration:none;color:var(--ink);border-radius:8px;padding:6px 10px;line-height:1.3;margin:1px 0}
.sidebar a:hover{background:var(--surface-2)}
.sidebar .yr{display:block;font-size:.66rem;font-weight:700;letter-spacing:.04em;color:var(--brick)}
.sidebar .tt{display:block;font-size:.86rem;font-weight:600}
.sidebar a[aria-current]{background:var(--accent);color:var(--card)}
.sidebar a[aria-current] .yr{color:inherit;opacity:.8}

main{max-width:720px;margin:0 auto;padding:18px 14px 40px}
section{scroll-margin-top:calc(var(--bar-h) + 10px)}
h1,h2,h3{scroll-margin-top:calc(var(--bar-h) + 14px)}

.legend{display:flex;flex-direction:column;align-items:flex-start;gap:6px;background:var(--card);border:1px solid var(--line);
  border-left:4px solid var(--gold);border-radius:10px;padding:12px 14px;margin:6px 0 18px;font-size:.88rem;color:var(--muted);line-height:1.45}
.legend strong{white-space:nowrap}
.legend .row{display:flex;gap:8px;align-items:baseline}
.legend .row span:first-child{min-width:7.2em;color:var(--ink);font-weight:600}

/* parts */
.part{background:var(--card);border:1px solid var(--line);border-radius:14px;margin:22px 0;overflow:hidden;box-shadow:var(--shadow)}
.banner{background:var(--banner);color:#fff;padding:18px 18px 16px;border-bottom:4px solid var(--gold)}
.banner.gold{background:var(--banner-key)}
.banner h1,.banner h2{margin:.15em 0 0;font-size:clamp(1.3rem,4.8vw,1.75rem);line-height:1.25}
.eyebrow{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#f7e6bf}
.prose{padding:6px 18px 8px}
.prose h3{font-size:1.15rem;line-height:1.3;color:var(--accent);margin:1.6em 0 .3em;padding-left:10px;border-left:3px solid var(--gold)}
.prose p{margin:.75em 0}
.prose ul{padding-left:1.2em}
.prose li{margin:.3em 0}
hr{border:0;height:1px;background:var(--line);margin:2em 0}

/* the answers */
strong{font-weight:700;color:var(--hl-text);
  background:linear-gradient(transparent 58%,var(--gold-soft) 58%);padding:0 2px;border-radius:2px;
  -webkit-box-decoration-break:clone;box-decoration-break:clone}

.top{display:block;text-align:right;font-size:.78rem;font-weight:600;color:var(--muted);text-decoration:none;padding:4px 18px 16px}

/* answer key */
.quizbar{position:sticky;top:var(--bar-h);z-index:4;background:var(--card);padding:8px 0;margin-bottom:4px}
.quizbar button{font-size:.85rem;font-weight:600;border:1px solid var(--accent);color:var(--accent);background:var(--card);
  border-radius:999px;padding:8px 16px;cursor:pointer}
.quizbar button[aria-pressed="true"]{background:var(--accent);color:var(--card)}
.qalist{list-style:none;margin:0;padding:0}
.qa{display:grid;grid-template-columns:auto 1fr;gap:2px 10px;padding:11px 0;border-top:1px solid var(--line);
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:.92rem;line-height:1.45}
.qnum{grid-row:span 2;font-size:.72rem;font-weight:700;color:var(--brick);background:var(--qnum-bg);border-radius:6px;padding:3px 6px;height:fit-content;margin-top:2px}
.q{color:var(--ink)}
.a{all:unset;font-weight:700;color:var(--accent);cursor:default}
.quiz .a{cursor:pointer;color:transparent;font-size:0;padding:4px 8px;background:repeating-linear-gradient(135deg,var(--quiz-a) 0 8px,var(--quiz-b) 8px 16px);
  border-radius:4px;user-select:none;min-height:1.3em}
.quiz .a::before{content:"Tap to reveal";color:var(--muted);font-weight:600;font-size:.8rem}
.quiz .a.shown{color:var(--hl-text);background:var(--gold-soft);font-size:.92rem;padding:2px 6px}
.quiz .a.shown::before{content:none}
.qa .where{grid-column:2;font-size:.75rem;font-weight:600;color:var(--muted);text-decoration:none;margin-top:2px}
strong[id],.qa{scroll-margin-top:calc(var(--bar-h) + 50px)}

/* question cue words */
u.cue{text-decoration:underline;text-decoration-color:var(--brick);text-decoration-thickness:2px;text-underline-offset:3px}
sup.qn{font-family:Inter,system-ui,sans-serif;font-size:.6em;font-weight:700;line-height:0;margin-left:1px;vertical-align:super}
sup.qn a{color:var(--brick);text-decoration:none}
:target{outline:2px solid var(--gold);outline-offset:2px}

/* ad slots: reserved height so the page doesn't jump when an ad loads */
.ad-slot{display:flex;align-items:center;justify-content:center;min-height:100px;margin:14px 0;
  border:1px dashed var(--line-strong);border-radius:10px;background:var(--surface-2);color:var(--muted);
  font:600 .7rem/1 Inter,system-ui,sans-serif;letter-spacing:.14em;text-transform:uppercase}

.chapter-count{font-family:Inter,system-ui,sans-serif;font-size:.78rem;font-weight:600;color:var(--muted);margin:4px 2px 0}

/* previous / next */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 8px}
.pager a{display:flex;flex-direction:column;gap:3px;text-decoration:none;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:12px 14px;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;box-shadow:var(--shadow)}
.pager a:hover{border-color:var(--accent)}
.pager .dir{font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--brick)}
.pager .t{font-size:.9rem;font-weight:600;color:var(--accent);line-height:1.3}
.pager .next{grid-column:2;text-align:right}

/* home page */
.cta{display:inline-block;margin:6px 0 4px;background:#a63d2f;color:#fff;text-decoration:none;border-radius:999px;
  padding:11px 22px;font:700 .95rem Inter,system-ui,sans-serif}
.cta:hover{background:#8f2f24}
.prose .facts,.prose .toc,.prose .lookups{padding-left:0}
.facts{list-style:none;margin:.6em 0;display:grid;gap:8px}
.facts li{background:var(--surface-2);border-radius:10px;padding:10px 12px;margin:0;font-size:.95rem;line-height:1.5}
.facts b{color:var(--accent)}
.toc{list-style:none;margin:.5em 0}
.toc li{margin:0;border-top:1px solid var(--line)}
.toc a{display:flex;gap:12px;align-items:baseline;padding:10px 2px;text-decoration:none;color:var(--ink)}
.toc a:hover .tt{text-decoration:underline}
.toc .yr{flex:0 0 6.6em;font:700 .72rem Inter,system-ui,sans-serif;color:var(--brick);letter-spacing:.04em}
.toc .tt{font-weight:700;color:var(--accent)}

/* state lookup */
.picker{display:flex;flex-direction:column;gap:6px;margin:12px 0 4px;font-family:Inter,system-ui,sans-serif}
.picker label{font-size:.85rem;font-weight:700;color:var(--accent)}
.picker select{font:inherit;font-size:1rem;padding:10px 12px;border:1px solid var(--line-strong);border-radius:10px;
  background:var(--card);color:var(--ink);max-width:22rem}
.lookups{list-style:none;margin:10px 0 0}
.lookups li{border-top:1px solid var(--line);padding:12px 0;margin:0;font-family:Inter,system-ui,sans-serif;font-size:.92rem;line-height:1.45}
.lookups .q{display:block;margin-bottom:6px}
.lookups .ans{font-weight:700;color:var(--accent)}
.lookups .hint{color:var(--muted);font-size:.85rem}
.btn{display:inline-block;text-decoration:none;font-weight:600;font-size:.85rem;color:var(--accent);background:var(--card);
  border:1px solid var(--accent);border-radius:999px;padding:7px 14px}
.btn:hover{background:var(--accent);color:var(--card)}
.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}
.note{font-size:.85rem;color:var(--muted);line-height:1.5}

footer{max-width:720px;margin:0 auto;padding:6px 16px 40px;font:.78rem/1.55 Inter,system-ui,sans-serif;color:var(--muted);text-align:center}
footer a{color:var(--muted)}

/* practice quiz */
button.btn{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;cursor:pointer;line-height:1.3}
.btn.primary{background:var(--accent);color:var(--card)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.good{border-color:var(--good);color:var(--good)}
.btn.good:hover{background:var(--good);color:var(--card)}
.btn.bad{border-color:var(--bad);color:var(--bad)}
.btn.bad:hover{background:var(--bad);color:var(--card)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.progress-shell{height:8px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;overflow:hidden;margin:6px 0 2px}
.progress-bar{height:100%;width:0;background:var(--gold);transition:width .2s ease}
.quiz-meta{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0 2px;font:600 .74rem/1.3 Inter,system-ui,sans-serif}
.tag{border:1px solid var(--line);background:var(--surface-2);color:var(--muted);padding:3px 9px;border-radius:999px}
.tag.star{border-color:var(--gold);color:var(--ink)}
.answer-label{display:block;margin:16px 0 6px;font:700 .85rem Inter,system-ui,sans-serif;color:var(--accent)}
textarea.answer{display:block;width:100%;min-height:96px;resize:vertical;font:1rem/1.5 Inter,system-ui,sans-serif;padding:12px 14px;
  border:1.5px solid var(--line-strong);border-radius:12px;background:var(--card);color:var(--ink)}
textarea.answer:focus,.quiz-setup select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--focus-ring)}
.help{font:.8rem/1.45 Inter,system-ui,sans-serif;color:var(--muted);margin:6px 0 12px}
/* the hidden attribute must win over display rules such as .actions{display:flex} */
[hidden]{display:none!important}
.actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.feedback{display:none;margin:16px 0 4px;border-radius:12px;padding:12px 14px;font:.92rem/1.5 Inter,system-ui,sans-serif}
.feedback.show{display:block}
.feedback .title{display:block;font-weight:700;margin-bottom:2px}
.feedback.good{background:var(--good-bg);color:var(--good);border:1px solid var(--good-line)}
.feedback.bad{background:var(--bad-bg);color:var(--bad);border:1px solid var(--bad-line)}
.feedback.partial{background:var(--warn-bg);color:var(--warn);border:1px solid var(--warn-line)}
.feedback.info{background:var(--surface-2);color:var(--ink);border:1px solid var(--line)}
.feedback ul{margin:6px 0 0;padding-left:1.2em;color:var(--ink)}
.feedback li{margin:2px 0}
.feedback .sub{display:block;margin-top:8px;font-weight:700;color:var(--ink)}
.feedback .dated{margin:8px 0 0;font-size:.8rem;color:var(--muted)}
.feedback a{color:var(--link);font-weight:600}
.selfgrade{display:none;flex-wrap:wrap;gap:8px;margin-top:10px}
.selfgrade.show{display:flex}
.prev-status{font:.8rem/1.4 Inter,system-ui,sans-serif;color:var(--muted);margin:8px 0 0}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:12px 0}
.stat{background:var(--surface-2);border-radius:10px;padding:10px 12px;font-family:Inter,system-ui,sans-serif}
.stat b{display:block;font-size:1.35rem;line-height:1.2;color:var(--accent);font-variant-numeric:tabular-nums}
.stat span{font-size:.75rem;color:var(--muted)}
.quiz-setup{display:flex;flex-direction:column;gap:10px;margin:12px 0;font-family:Inter,system-ui,sans-serif}
.quiz-setup label{font-size:.85rem;font-weight:700;color:var(--accent)}
.quiz-setup select{font:inherit;font-size:1rem;padding:10px 12px;border:1px solid var(--line-strong);border-radius:10px;
  background:var(--card);color:var(--ink);max-width:24rem}
.quiz-setup .check{display:flex;gap:8px;align-items:center;font-size:.9rem;font-weight:600;color:var(--ink)}
.quiz-setup .check input{width:18px;height:18px;accent-color:var(--accent)}
.quiz-setup .note{margin:0}
.kbd{font:600 .75em Inter,system-ui,sans-serif;border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:5px;padding:0 5px;background:var(--surface-2)}

@media (min-width:640px){
  .stats{grid-template-columns:repeat(4,1fr)}
  body{font-size:18px}
  main{padding:26px 20px 56px}
  .prose{padding:8px 28px 10px}
  .banner{padding:22px 28px 18px}
  .top{padding:4px 28px 20px}
  .hero{padding:52px 24px 44px}
}
@media (min-width:960px){
  .layout{display:grid;grid-template-columns:272px minmax(0,1fr)}
  .sidebar{position:sticky;top:var(--bar-h);height:calc(100vh - var(--bar-h));width:auto;z-index:auto;
    transform:none;visibility:visible;transition:none}
  .menu-btn,.sidebar-head,.scrim{display:none !important}
  .masthead{padding:0 16px}
  .brand{text-align:left}
  body.nav-open{overflow:auto}
}
@media print{.sidebar,.scrim,.icon-btn,.quizbar,.top,.ad-slot,.pager{display:none}.part{box-shadow:none;break-inside:auto}.layout{display:block}}
footer .copyright{margin-top:10px;padding-top:10px;border-top:1px solid var(--line);font-size:.72rem}
.hero.compact{padding:18px 18px 16px}
.hero.compact h1{font-size:clamp(1.35rem,4.6vw,1.8rem);margin:0 0 .2em}
.hero.compact p.sub{font-size:.88rem}
.callout{background:var(--surface-2);border-left:3px solid var(--gold);border-radius:8px;padding:10px 14px;font-size:.95rem;line-height:1.55}
.callout b{color:var(--accent)}
footer .legal-links{margin-top:8px;font-weight:600}
.legal mark{background:var(--warn-bg);color:var(--warn);border:1px dashed var(--warn-line);border-radius:4px;padding:0 4px}
.legal .prose ul{margin:.4em 0}
/* visible focus for keyboard users */
.pager a:focus-visible,.cta:focus-visible,.btn:focus-visible,.sidebar a:focus-visible,.toc a:focus-visible{outline:3px solid var(--gold);outline-offset:2px}

/* dates to memorize */
.prose .dates{list-style:none;padding:0;margin:14px 0 6px}
.date-row{display:grid;grid-template-columns:1fr;gap:4px 16px;padding:14px 0;margin:0;border-top:1px solid var(--line)}
.date-row .when{font:700 1.25rem/1.2 "Source Serif 4",Georgia,serif;color:var(--brick)}
.date-row .event{margin:0 0 6px;font-weight:600}
.prose .date-qs{list-style:none;padding:0;margin:0 0 6px}
.date-qs li{margin:4px 0;font:.88rem/1.45 Inter,system-ui,sans-serif;color:var(--ink)}
.date-qs b{color:var(--hl-text);background:linear-gradient(transparent 58%,var(--gold-soft) 58%);padding:0 2px}
.date-qs .qnum{display:inline-block;margin-right:4px}
.date-qs .where{font-size:.75rem;font-weight:600;color:var(--muted);text-decoration:none;white-space:nowrap}
.date-row .tip{margin:0;font-size:.9rem;color:var(--muted);font-style:italic}
@media (min-width:640px){.date-row{grid-template-columns:9.5rem 1fr}}

/* side panel: section names stand out, page names are lighter */
.sidebar .group{font-size:.8rem;font-weight:800;letter-spacing:.1em;color:var(--ink);padding:18px 10px 6px;
  text-decoration:underline;text-decoration-color:var(--gold);text-decoration-thickness:2px;text-underline-offset:4px}
.sidebar .tt{font-size:.82rem;font-weight:400}
.sidebar .yr{font-size:.64rem}

/* mock test */
.mock-score{display:grid;grid-template-columns:1fr;gap:8px;margin:12px 0 4px;font-family:Inter,system-ui,sans-serif}
.mock-pos{font-size:.8rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.mock-meter{display:flex;flex-direction:column;gap:3px;font-size:.82rem;color:var(--ink)}
.mock-meter .progress-shell{display:block;margin:0}
.mock-meter.good .progress-bar{background:var(--good)}
.mock-meter.bad .progress-bar{background:var(--bad)}
.mock-meter .progress-bar{display:block}
.mock-qnum{margin:18px 0 2px;font:700 .72rem Inter,system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--brick)}
.prose h3.mock-question{border-left:none;padding-left:0;margin:0 0 6px;font-size:1.3rem;line-height:1.35;color:var(--ink)}
.answer-reveal{margin:18px 0 0;padding-top:12px;border-top:1px solid var(--line);font:.92rem/1.5 Inter,system-ui,sans-serif}
.answer-reveal summary{cursor:pointer;font-weight:600;color:var(--link)}
.answer-reveal ul{margin:4px 0 8px}
.answer-reveal p{margin:8px 0}
.mock-plan{margin:10px 0;font:.88rem/1.5 Inter,system-ui,sans-serif;color:var(--muted)}
.mock-plan summary{cursor:pointer;font-weight:600;color:var(--link)}
.mock-plan ul{margin:6px 0 0}
.mock-verdict{border-radius:12px;padding:16px 18px;margin:14px 0}
.mock-verdict h3{border:0;padding:0;margin:.2em 0 .3em;font-size:1.35rem}
.mock-verdict .eyebrow{color:inherit;opacity:.8}
.mock-verdict p{margin:.3em 0}
.mock-verdict.pass{background:var(--good-bg);border:1px solid var(--good-line);color:var(--good)}
.mock-verdict.pass h3{color:var(--good)}
.mock-verdict.fail{background:var(--bad-bg);border:1px solid var(--bad-line);color:var(--bad)}
.mock-verdict.fail h3{color:var(--bad)}
.prose h3.mock-review-head{margin-top:1.2em}
.prose .mock-review{list-style:none;padding:0;margin:6px 0 12px}
.mock-review li{border-top:1px solid var(--line);padding:10px 0;margin:0;font:.9rem/1.45 Inter,system-ui,sans-serif}
.mock-review .where{font-size:.78rem;font-weight:600;color:var(--muted);text-decoration:none}
@media (min-width:640px){.mock-score{grid-template-columns:auto 1fr 1fr;align-items:end;gap:16px}}

/* Phones, quiz and mock test pages: keep the question, answer box and Check button above the
   on-screen keyboard. The top ad moves out (the bottom one stays) and the question box tightens. */
@media (max-width:639px){
  .quiz-page .ad-top{display:none}
  .quiz-page main{padding-top:10px}
  .quiz-page #position{margin:0 2px;font-size:.72rem}
  .quiz-page #position+.progress-shell{height:4px;margin:3px 0 0}
  .quiz-page .part{margin:10px 0 18px}
  .quiz-page .banner{padding:11px 14px 10px;border-bottom-width:3px}
  .quiz-page .banner .eyebrow{font-size:.62rem}
  .quiz-page .banner h1{font-size:1.12rem;line-height:1.3}
  .quiz-page .prose{padding:2px 14px 8px}
  .quiz-page .quiz-meta .tag:not(.star){display:none}
  .quiz-page .quiz-meta{margin:8px 0 0}
  .quiz-page .answer-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .quiz-page textarea.answer{min-height:72px;margin-top:10px}
  .quiz-page .help{margin:4px 0 8px}
  .quiz-page #mock:has(#mock-run:not([hidden])) .banner{display:none}
  .quiz-page .mock-score{grid-template-columns:1fr 1fr;gap:6px 10px;margin-top:4px}
  .quiz-page .mock-pos{grid-column:1/-1}
  .quiz-page .mock-meter{font-size:.72rem}
  .quiz-page .mock-qnum{margin-top:10px}
  .quiz-page .prose h3.mock-question{font-size:1.12rem}
}
/* touch screens have no Enter key to point at */
@media (hover:none),(pointer:coarse){.enter-hint{display:none}}

/* Phones: the header slides up while scrolling down and comes back on any scroll up (site.js) */
@media (max-width:639px){
  .masthead,.quizbar{transition:transform .2s ease,top .2s ease}
  body.bar-hidden .masthead{transform:translateY(-100%)}
  body.bar-hidden .quizbar{top:0}
}
@media (prefers-reduced-motion:reduce){.masthead,.quizbar{transition:none}}