/* ============================================================
   Montgomery's Cardiology Primers — Study Lab
   Dark, focused active-recall surface adapted from the primer library.
   The Study Lab remains independent of the printable guide styles.
   ============================================================ */

:root{
  color-scheme:dark;
  --study-bg:#0b1120;
  --study-bg-deep:#070c17;
  --study-panel:#111a2e;
  --study-panel-2:#161f36;
  --study-navy:#14213d;
  --study-border:#2e3a5c;
  --study-border-soft:#232e4c;
  --study-gold:#fcbf49;
  --study-gold-soft:#fcd98a;
  --study-paper:#faf7f2;
  --study-paper-gold:#fdf0d5;
  --study-text:#eef1ec;
  --study-muted:#98a3bd;
  --study-muted-deep:#6f7b98;
  --study-card-ink:#111827;
  --study-danger:#ff8d84;
  --study-success:#7fd49a;
  --study-shadow:0 24px 60px rgba(0,0,0,.32);
  --study-radius:18px;
  --study-focus:0 0 0 3px rgba(252,191,73,.24);
}

*{box-sizing:border-box}
html{min-width:0;background:var(--study-bg);scroll-behavior:smooth}
body.study-page{
  min-width:0;
  min-height:100vh;
  margin:0;
  overflow-x:hidden;
  background:
    radial-gradient(900px 500px at 72% -180px,rgba(44,69,120,.38),transparent 70%),
    radial-gradient(720px 420px at -10% 42%,rgba(252,191,73,.055),transparent 70%),
    var(--study-bg);
  color:var(--study-text);
  font-family:"Hanken Grotesk",ui-sans-serif,system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}

body.study-page [hidden]{display:none !important}
button,input,select{font:inherit}
button{touch-action:manipulation}
.study-shell{width:min(1000px,calc(100% - 48px));margin:0 auto}
.study-skip{
  position:fixed;
  z-index:100;
  top:8px;
  left:8px;
  padding:10px 14px;
  border-radius:8px;
  background:var(--study-gold);
  color:var(--study-bg);
  font-weight:800;
  text-decoration:none;
  transform:translateY(-150%);
}
.study-skip:focus{transform:none}
.study-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- Primer-library masthead ---------- */
.study-masthead{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:14px;
  min-height:68px;
  border-bottom:1px solid var(--study-border-soft);
}
.study-back,.study-change,.study-reset{
  width:max-content;
  min-height:44px;
  border:1px solid var(--study-border);
  border-radius:10px;
  background:var(--study-panel-2);
  color:var(--study-text);
  font-weight:800;
  font-size:12px;
  text-decoration:none;
  cursor:pointer;
  transition:border-color .15s,background .15s,color .15s,transform .15s;
}
.study-back{display:inline-flex;align-items:center;gap:8px;padding:0 13px}
.study-back > span:first-child{color:var(--study-gold);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:15px}
.study-brand{display:flex;align-items:center;gap:10px;min-width:0}
.study-brand-mark{
  display:block;
  width:34px;
  height:34px;
  flex:none;
}
.study-brand-mark img{display:block;width:100%;height:100%}
.study-brand > div{min-width:0}
.study-eyebrow{
  overflow:hidden;
  color:var(--study-gold);
  font-family:"Newsreader",ui-serif,Georgia,serif;
  font-size:14px;
  font-style:italic;
  line-height:1;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.study-brand-name{margin-top:3px;color:var(--study-text);font-size:13px;line-height:1;font-weight:800;letter-spacing:-.015em}
.study-trust{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:7px;
  color:var(--study-muted);
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:9px;
  letter-spacing:.07em;
  text-transform:uppercase;
  white-space:nowrap;
}
.study-trust-dot{width:7px;height:7px;border-radius:50%;background:var(--study-success);box-shadow:0 0 0 4px rgba(127,212,154,.09)}

/* ---------- Session setup ---------- */
.study-setup{padding:30px 0 58px}
.study-intro{max-width:780px}
.study-kicker,.study-step{
  color:var(--study-gold);
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:9px;
  line-height:1.3;
  font-weight:800;
  letter-spacing:.13em;
  text-transform:uppercase;
}
.study-intro h1,.study-session-head h1,.study-complete h1{
  margin:7px 0 0;
  color:var(--study-text);
  font-size:clamp(30px,4vw,42px);
  line-height:1;
  letter-spacing:-.035em;
  font-weight:800;
}
.study-intro h1 em{color:var(--study-gold);font-family:"Newsreader",ui-serif,Georgia,serif;font-weight:500}
.study-intro > p{max-width:730px;margin:9px 0 0;color:var(--study-muted);font-size:14px;line-height:1.55}
.study-intro > p strong{
  display:inline;
  color:var(--study-text);
  font-family:"Newsreader",ui-serif,Georgia,serif;
  font-size:16px;
  font-style:italic;
  font-weight:500;
}
.study-counts{display:flex;flex-wrap:wrap;gap:7px;margin-top:15px}
.study-counts span{
  display:flex;
  align-items:baseline;
  gap:5px;
  padding:7px 10px;
  border:1px solid var(--study-border);
  border-radius:999px;
  background:rgba(22,31,54,.72);
  color:var(--study-muted);
  font-size:11px;
}
.study-counts b{color:var(--study-text);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:12px}

.study-planner-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(255px,.72fr);gap:16px;align-items:start;margin-top:25px}
.study-planner,.study-coverage{
  overflow:hidden;
  border:1px solid var(--study-border-soft);
  border-radius:14px;
  background:linear-gradient(145deg,rgba(22,31,54,.98),rgba(14,22,39,.98));
  box-shadow:0 18px 46px rgba(0,0,0,.19);
}
.study-planner{padding:25px;border-top:3px solid var(--study-gold)}
.study-panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.study-panel-head h2,.study-coverage h2{margin:6px 0 0;color:var(--study-text);font-size:23px;line-height:1.08;letter-spacing:-.025em}
.study-local{display:flex;align-items:center;gap:7px;max-width:180px;color:var(--study-muted);font-size:10px;line-height:1.35;text-align:right}
.study-local span{color:var(--study-success);font-size:9px}

.study-scope{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:20px 0 18px;padding:0;border:0}
.scope-choice{position:relative;min-width:0;cursor:pointer}
.scope-choice input{position:absolute;opacity:0;pointer-events:none}
.scope-choice > span{
  display:flex;
  min-height:80px;
  padding:12px;
  border:1px solid var(--study-border);
  border-radius:10px;
  background:var(--study-panel-2);
  color:var(--study-text);
  flex-direction:column;
  justify-content:center;
  transition:border-color .15s,background .15s,color .15s,transform .15s;
}
.scope-choice b{font-size:13px;line-height:1.1}
.scope-choice small{margin-top:5px;color:var(--study-muted);font-size:10px;line-height:1.25}
.scope-choice input:checked + span{
  border-color:var(--study-paper);
  background:var(--study-paper);
  color:var(--study-card-ink);
  box-shadow:inset 0 -3px 0 var(--study-gold);
}
.scope-choice input:checked + span small{color:#596171}
.scope-choice input:focus-visible + span{outline:3px solid var(--study-gold);outline-offset:3px}

.study-field-row{display:grid;grid-template-columns:160px minmax(0,1fr);gap:12px;align-items:center;margin-top:11px}
.study-field-row > label{color:var(--study-text);font-size:11px;font-weight:800}
.study-field-row > label span{display:block;margin-top:2px;color:var(--study-muted-deep);font-size:8px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.study-field-row select,.study-field-row input{
  width:100%;
  min-height:46px;
  border:1px solid var(--study-border);
  border-radius:9px;
  outline:0;
  background:#0d1628;
  color:var(--study-text);
  font-size:13px;
}
.study-field-row select{padding:8px 38px 8px 12px}
.study-field-row input{padding:10px 12px;-webkit-appearance:none;appearance:none}
.study-field-row input::placeholder{color:var(--study-muted-deep)}
.study-field-row :is(select,input):focus{border-color:var(--study-gold);box-shadow:var(--study-focus)}
.study-field-row option,.study-field-row optgroup{background:var(--study-bg);color:var(--study-text)}
.study-divider{height:1px;margin:22px 0 18px;background:var(--study-border-soft)}

.study-more{margin-top:16px;border:1px solid var(--study-border);border-radius:10px;background:#0d1628}
.study-more > summary{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 18px;align-items:center;min-height:52px;padding:9px 13px;cursor:pointer;list-style:none}
.study-more > summary::-webkit-details-marker{display:none}
.study-more > summary::after{content:"+";grid-column:2;grid-row:1 / span 2;color:var(--study-gold);font:800 20px/1 "JetBrains Mono",ui-monospace,monospace}
.study-more[open] > summary::after{content:"−"}
.study-more > summary > span{color:var(--study-text);font-size:11px;font-weight:800}
.study-more > summary > small{color:var(--study-muted);font-size:10px;line-height:1.3}
.study-more > summary:focus-visible{outline:3px solid var(--study-gold);outline-offset:3px;border-radius:8px}
.study-more-body{padding:0 13px 14px;border-top:1px solid var(--study-border-soft)}
.study-more .study-scope{margin-top:14px}
.study-more .study-scope legend{grid-column:1/-1;margin-bottom:-2px;color:var(--study-muted);font-size:10px;font-weight:800}

.study-session-options{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-top:11px}
.study-length{display:flex;align-items:stretch;margin:0;padding:0;border:0}
.study-length legend{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.study-length label{position:relative;display:flex;flex:1;cursor:pointer}
.study-length input{position:absolute;opacity:0}
.study-length span{
  display:grid;
  place-items:center;
  width:100%;
  min-height:56px;
  border:1px solid var(--study-border);
  border-right:0;
  background:var(--study-panel-2);
  color:var(--study-text);
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:11px;
  font-weight:800;
}
.study-length label:first-of-type span{border-radius:9px 0 0 9px}
.study-length label:last-of-type span{border-right:1px solid var(--study-border);border-radius:0 9px 9px 0}
.study-length input:checked + span{position:relative;z-index:1;border-color:var(--study-paper);background:var(--study-paper);color:var(--study-card-ink);box-shadow:1px 0 0 var(--study-paper),inset 0 -3px 0 var(--study-gold)}
.study-length input:focus-visible + span{outline:3px solid var(--study-gold);outline-offset:2px;z-index:2}
.study-check{position:relative;display:flex;align-items:center;gap:9px;min-height:56px;padding:8px 10px;border:1px solid var(--study-border);border-radius:9px;background:var(--study-panel-2);cursor:pointer}
.study-check input{width:18px;height:18px;margin:0;accent-color:var(--study-gold);flex:none}
.study-check span{display:flex;min-width:0;flex-direction:column;gap:2px}
.study-check b{color:var(--study-text);font-size:11px;line-height:1.1}
.study-check small{color:var(--study-muted);font-size:8.5px;line-height:1.2}
.study-check:focus-within{outline:3px solid var(--study-gold);outline-offset:2px}

.study-preview{min-height:19px;margin:17px 0 7px;color:var(--study-muted);font-size:11px;line-height:1.4}
.study-preview b{color:var(--study-text)}
.study-preview .study-preview-warn{color:var(--study-danger);font-weight:800}
.study-start{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  min-height:54px;
  padding:10px 16px;
  border:1px solid var(--study-gold);
  border-radius:10px;
  background:var(--study-gold);
  color:var(--study-bg);
  font-size:13px;
  font-weight:800;
  cursor:pointer;
  transition:background .15s,border-color .15s,transform .15s;
}
.study-start > span:last-child{color:var(--study-bg);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:18px}
.study-start:disabled{border-color:var(--study-border);background:var(--study-border-soft);color:var(--study-muted-deep);cursor:not-allowed}
.study-start:disabled > span:last-child{color:var(--study-muted-deep)}

.study-coverage{position:sticky;top:16px;padding:24px 22px;border-top:3px solid var(--study-border)}
.study-coverage > p{margin:10px 0 16px;color:var(--study-muted);font-size:12px;line-height:1.5}
.study-coverage-list{border-top:1px solid var(--study-border-soft)}
.study-coverage-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:9px;align-items:center;padding:9px 0;border-bottom:1px solid var(--study-border-soft)}
.study-coverage-row span{min-width:0;color:var(--study-text);font-size:10px;font-weight:800;line-height:1.25}
.study-coverage-row b{color:var(--study-gold);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:9px}
.study-coverage-note{margin-top:17px;padding:12px;border-left:3px solid var(--study-gold);background:rgba(252,191,73,.08);color:var(--study-muted);font-size:9px;line-height:1.48}
.study-coverage-note b{color:var(--study-gold-soft)}

/* ---------- Focused card session ---------- */
.study-workspace{width:min(760px,100%);margin:0 auto;padding:34px 0 64px}
.study-session-head{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:15px;align-items:start}
.study-change,.study-reset{padding:0 12px}
.study-change{display:inline-flex;align-items:center;gap:7px}
.study-change span{color:var(--study-gold)}
.study-reset{color:var(--study-muted);font-size:10px}
.study-focus-copy{text-align:center}
.study-session-head h1{margin-top:4px;font-size:clamp(25px,4vw,38px);line-height:1;letter-spacing:-.035em}
.study-focus-detail{margin-top:6px;color:var(--study-muted);font-size:11px}

.study-progress-wrap{margin:27px 0 14px}
.study-progress-meta{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:8px;color:var(--study-muted);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:10px;line-height:1.3;letter-spacing:.04em;text-transform:uppercase}
.study-progress-track{height:4px;overflow:hidden;border-radius:99px;background:var(--study-border-soft)}
.study-progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:var(--study-gold);transition:width .25s ease}

.study-card-region{width:min(680px,100%);margin:0 auto;padding:17px 0 0}
.study-card-context{display:flex;align-items:center;justify-content:center;gap:7px;margin-bottom:9px;color:var(--study-muted);font-size:9px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.study-card-context span:first-child{color:var(--study-gold)}
.study-card{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  padding:0;
  border:1px solid #e5e1d8;
  border-radius:var(--study-radius);
  outline:0;
  background:var(--study-paper);
  color:var(--study-card-ink);
  box-shadow:var(--study-shadow);
  text-align:left;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;
}
.study-card::before{content:"";position:absolute;z-index:2;top:0;left:0;width:100%;height:5px;background:var(--study-gold)}
.study-card::after{
  content:"Q";
  position:absolute;
  z-index:3;
  top:20px;
  right:22px;
  display:grid;
  place-items:center;
  width:28px;
  height:28px;
  border-radius:7px;
  background:var(--study-navy);
  color:var(--study-gold);
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:10px;
  font-weight:800;
}
.study-card-face{display:flex;width:100%;padding:48px 54px 38px;flex-direction:column;align-items:flex-start;justify-content:center;text-align:left}
.study-card-front{min-height:340px;border:0;background:transparent;color:inherit;cursor:pointer}
.study-card-front:focus-visible{outline:4px solid var(--study-gold);outline-offset:-6px}
.study-card-back{min-height:340px;color:var(--study-card-ink)}
.study-card-label{align-self:flex-start;margin-bottom:18px;color:#9a5d00;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:9px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.study-card-label::after{content:"";display:inline-block;width:42px;height:1px;margin-left:10px;background:rgba(17,24,39,.18);vertical-align:middle}
.study-question{display:block;max-width:560px;font-size:clamp(22px,3.4vw,29px);font-weight:750;line-height:1.38;letter-spacing:-.02em;text-wrap:pretty}
.study-flip-cue{display:flex;align-items:center;gap:7px;margin-top:auto;padding-top:30px;color:#707a78;font-size:11px;font-weight:700}
.study-flip-cue span{color:#b76c00;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:16px}
.study-card.is-flipped{border-color:#ecd9a8;background:var(--study-paper-gold);transform:translateY(-2px);box-shadow:0 28px 68px rgba(0,0,0,.38)}
.study-card.is-flipped::after{content:"A"}
.study-card.is-flipped .study-card-front{display:none}
.study-answer{display:block;max-width:560px;white-space:pre-line;font-size:clamp(17px,2.4vw,21px);font-weight:550;line-height:1.55;letter-spacing:-.01em;text-wrap:pretty}
.study-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:25px}
.study-tags span{padding:5px 8px;border:1px solid rgba(20,33,61,.2);border-radius:999px;background:rgba(255,255,255,.38);color:#53606f;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:9px;line-height:1.25;letter-spacing:.04em}
.study-answer:focus{outline:0}
.study-card-hint{margin:10px 0 0;text-align:center;color:var(--study-muted);font-size:11px}
.study-source-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:44px;margin-top:4px;color:var(--study-muted);font-size:11px}
.study-source-row a{display:inline-flex;align-items:center;min-height:44px;color:var(--study-gold);font-weight:800;text-decoration:none}
.study-source-row a span{font-family:"JetBrains Mono",ui-monospace,monospace}

.study-reveal-actions,.study-grade-actions{margin-top:8px}
.study-show{width:100%;min-height:52px;border:1px solid var(--study-border);border-radius:10px;background:var(--study-panel-2);color:var(--study-text);font-weight:800;cursor:pointer}
.study-grade-actions{display:grid;grid-template-columns:1fr 1.6fr;gap:9px}
.study-again,.study-got{display:flex;align-items:center;gap:12px;min-height:59px;padding:9px 14px;border-radius:10px;cursor:pointer}
.study-again{border:1px solid var(--study-border);background:var(--study-panel-2);color:var(--study-text);justify-content:center}
.study-got{border:1px solid var(--study-gold);background:var(--study-gold);color:var(--study-bg);justify-content:space-between}
.study-again > span:first-child{color:var(--study-gold);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:16px}
.study-grade-actions span{display:flex;flex-direction:column;text-align:left}
.study-grade-actions b{font-size:12px;line-height:1.15}
.study-grade-actions small{margin-top:2px;color:var(--study-muted);font-size:10px}
.study-got small{color:#634817}
.study-got > span:last-child{color:var(--study-bg);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:17px}
.study-keys{display:flex;justify-content:center;gap:14px;margin-top:16px;color:var(--study-muted-deep);font-size:8px}
.study-keys kbd{display:inline-grid;place-items:center;min-width:22px;height:20px;margin-right:3px;padding:0 5px;border:1px solid var(--study-border);border-bottom-width:2px;border-radius:4px;background:var(--study-panel-2);color:var(--study-muted);font:700 8px/1 "JetBrains Mono",ui-monospace,monospace}

/* ---------- Completion ---------- */
.study-complete{width:min(680px,100%);margin:0 auto;padding:80px 0 100px;text-align:center}
.study-complete-mark{display:grid;place-items:center;width:68px;height:68px;margin:0 auto 22px;border:1px solid rgba(252,191,73,.55);border-radius:50%;background:rgba(252,191,73,.11);color:var(--study-gold);font-size:28px;font-weight:800;box-shadow:0 0 0 8px rgba(252,191,73,.04)}
.study-complete h1{font-size:clamp(35px,6vw,56px)}
.study-complete > p{max-width:560px;margin:17px auto 0;color:var(--study-muted);font-size:15px;line-height:1.55}
.study-complete-actions{display:grid;grid-template-columns:1.4fr 1.15fr 1fr;gap:9px;margin:28px auto 0;max-width:720px}
.study-complete-actions .study-change{width:100%;justify-content:center}

/* ---------- Footer and interaction states ---------- */
.study-footer{display:flex;justify-content:space-between;gap:28px;padding:18px 0 27px;border-top:1px solid var(--study-border-soft);color:var(--study-muted);font-size:10px;line-height:1.5}
.study-footer > div:first-child{max-width:620px}
.study-footer b{color:var(--study-text)}
.study-footer-stamp{display:flex;flex-direction:column;align-items:flex-end;color:var(--study-muted-deep);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:9px}
.study-footer-stamp b{color:var(--study-gold)}

@media (hover:hover){
  .study-back:hover,.study-change:hover,.study-reset:hover,.study-show:hover,.study-again:hover{border-color:var(--study-gold);background:#1a2742;transform:translateY(-1px)}
  .study-card:not(.is-flipped):hover{transform:translateY(-3px);box-shadow:0 30px 72px rgba(0,0,0,.4)}
  .scope-choice:hover > span{border-color:var(--study-muted-deep);transform:translateY(-1px)}
  .study-start:not(:disabled):hover,.study-got:hover{border-color:var(--study-gold-soft);background:var(--study-gold-soft);transform:translateY(-1px)}
  .study-source-row a:hover{color:var(--study-gold-soft);text-decoration:underline;text-underline-offset:3px}
}

:is(.study-start,.study-change,.study-reset,.study-show,.study-again,.study-got,.study-back):focus-visible{outline:3px solid var(--study-gold);outline-offset:3px}

@media screen and (max-width:880px){
  .study-shell{width:min(100% - 32px,740px)}
  .study-trust{display:none}
  .study-planner-grid{grid-template-columns:1fr;margin-top:23px}
  .study-coverage{position:static}
  .study-session-head{grid-template-columns:auto 1fr}
  .study-focus-copy{grid-column:1/-1;grid-row:1;text-align:left;padding-right:110px}
  .study-change{grid-column:1;grid-row:2}
  .study-reset{grid-column:2;grid-row:2;justify-self:end}
}

@media screen and (max-width:620px){
  .study-shell{width:100%}
  .study-masthead{min-height:66px;padding-right:max(14px,env(safe-area-inset-right));padding-left:max(14px,env(safe-area-inset-left));gap:9px}
  .study-back{min-width:44px;width:44px;padding:0;justify-content:center}
  .study-back-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
  .study-brand{gap:8px}
  .study-brand-mark{width:31px;height:31px;border-radius:8px;font-size:8px}
  .study-eyebrow{font-size:13px}
  .study-brand-name{font-size:12px}
  .study-setup{padding-top:22px;padding-right:max(14px,env(safe-area-inset-right));padding-bottom:38px;padding-left:max(14px,env(safe-area-inset-left))}
  .study-intro h1{font-size:34px}
  .study-intro > p{font-size:13px;line-height:1.5}
  .study-intro > p strong{font-size:15px}
  .study-counts{flex-wrap:nowrap;max-width:100%;overflow-x:auto;padding-bottom:3px;scrollbar-width:none}
  .study-counts::-webkit-scrollbar{display:none}
  .study-counts span{flex:none}
  .study-planner-grid{margin-top:18px}
  .study-planner{padding:18px 15px}
  .study-panel-head{display:block}
  .study-local{max-width:none;margin-top:8px;text-align:left}
  .study-panel-head h2,.study-coverage h2{font-size:21px}
  .study-scope{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin-top:14px}
  .scope-choice > span{min-height:68px;padding:8px 7px}
  .scope-choice b{font-size:11px}
  .scope-choice small{display:none}
  .study-field-row{grid-template-columns:1fr;gap:6px;margin-top:11px}
  .study-field-row > label span{display:inline;margin-left:5px}
  .study-more{margin-top:13px}
  .study-more > summary{grid-template-columns:minmax(0,1fr) auto}
  .study-more > summary > small{display:none}
  .study-session-options{grid-template-columns:1fr 1fr}
  .study-length{grid-column:1/-1}
  .study-coverage{display:none}
  .study-workspace{padding-top:23px;padding-right:max(14px,env(safe-area-inset-right));padding-bottom:48px;padding-left:max(14px,env(safe-area-inset-left))}
  .study-session-head{gap:8px}
  .study-focus-copy{padding-right:0}
  .study-session-head h1{font-size:28px}
  .study-reset{width:auto;padding:0 9px;font-size:10px}
  .study-progress-meta{align-items:flex-start;font-size:9px}
  .study-progress-meta span:last-child{text-align:right}
  .study-card-region{padding-top:11px}
  .study-card{border-radius:14px}
  .study-card::after{top:17px;right:17px}
  .study-card-face{padding:42px 22px 28px}
  .study-card-front,.study-card-back{min-height:310px}
  .study-question{font-size:23px;line-height:1.4}
  .study-answer{font-size:18px;line-height:1.5}
  .study-source-row{align-items:flex-start}
  .study-source-row > span{text-align:right}
  .study-grade-actions{grid-template-columns:1fr 1.4fr}
  .study-keys{display:none}
  .study-complete{padding:62px 18px 78px}
  .study-complete-actions{grid-template-columns:1fr}
  .study-footer{padding-top:17px;padding-right:max(14px,env(safe-area-inset-right));padding-bottom:calc(24px + env(safe-area-inset-bottom));padding-left:max(14px,env(safe-area-inset-left));flex-direction:column}
  .study-footer-stamp{align-items:flex-start}
}

@media screen and (max-width:380px){
  .study-eyebrow{max-width:190px}
  .study-brand-name{font-size:11px}
  .study-session-options{grid-template-columns:1fr 1fr}
  .study-length{grid-column:1/-1}
  .study-card-face{padding-inline:20px}
}

@media print{
  html,body.study-page{background:var(--study-bg);-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .study-shell{width:100%}
  .study-masthead{min-height:58px}
  .study-setup,.study-workspace,.study-complete{padding-block:24px}
  .study-planner,.study-coverage,.study-card{box-shadow:none}
  .study-coverage{position:static}
  .study-footer{padding-bottom:0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .study-card,.study-back,.study-change,.study-reset,.study-start,.scope-choice > span,.study-progress-track span{transition:none}
}