/* ==========================================================================
   California CDL Companion — Castmark Press
   Design brief: read in a truck cab. Bright sun or dark night, one thumb,
   reading glasses. Large type, AA contrast, 48px targets, no decoration that
   costs legibility. Brand carried over from the printed cover (navy + gold).
   ========================================================================== */

/* ------------------------------------------------------------------ tokens */
:root {
  --navy:#1f3864; --navy-2:#16294a; --navy-3:#0f1d36;
  --blue:#2e75b6; --blue-d:#245e94; --blue-l:#eaf2fb;
  --gold:#c8860a; --gold-l:#fdf3e0;

  --ok:#186a35;  --ok-bg:#e6f5ec;  --ok-br:#b8e0c6;
  --bad:#a81f16; --bad-bg:#fdecea; --bad-br:#f3c2bd;
  --warn:#8a5a00;--warn-bg:#fff6e2;--warn-br:#ecd39a;

  --bg:#eff2f7; --surface:#ffffff; --surface-2:#f7f9fc; --surface-3:#eef2f8;
  --ink:#141a24; --ink-2:#3c4658; --ink-3:#5f6b7e;
  --line:#d9e0ea; --line-2:#c3cddb;

  --shadow:0 1px 2px rgba(15,29,54,.06), 0 4px 14px rgba(15,29,54,.07);
  --shadow-lg:0 6px 30px rgba(15,29,54,.16);

  --r:14px; --r-sm:10px; --r-lg:20px;
  --tap:48px;
  --maxw:820px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;

  --fs-body:17px; --fs-q:19px;
  --safe-b:env(safe-area-inset-bottom,0px);
  color-scheme:light;
}

@media (prefers-color-scheme:dark) { :root:not([data-theme="light"]) { color-scheme:dark;
  --bg:#0c1220; --surface:#151d2e; --surface-2:#1b2436; --surface-3:#222c41;
  --ink:#eef2f8; --ink-2:#c0cadb; --ink-3:#94a2b8;
  --line:#2b3549; --line-2:#3a4661;
  --blue:#69a8e2; --blue-d:#8cc0ee; --blue-l:#18263a;
  --gold:#e0a534; --gold-l:#2a2213;
  --ok:#63d391; --ok-bg:#132a1d; --ok-br:#255c3b;
  --bad:#ff8b80; --bad-bg:#2c1512; --bad-br:#63302a;
  --warn:#e8b761; --warn-bg:#2a2113; --warn-br:#5b4720;
  --navy:#151d2e; --navy-2:#101726;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.3);
  --shadow-lg:0 8px 34px rgba(0,0,0,.5);
} }
:root[data-theme="dark"] { color-scheme:dark;
  --bg:#0c1220; --surface:#151d2e; --surface-2:#1b2436; --surface-3:#222c41;
  --ink:#eef2f8; --ink-2:#c0cadb; --ink-3:#94a2b8;
  --line:#2b3549; --line-2:#3a4661;
  --blue:#69a8e2; --blue-d:#8cc0ee; --blue-l:#18263a;
  --gold:#e0a534; --gold-l:#2a2213;
  --ok:#63d391; --ok-bg:#132a1d; --ok-br:#255c3b;
  --bad:#ff8b80; --bad-bg:#2c1512; --bad-br:#63302a;
  --warn:#e8b761; --warn-bg:#2a2113; --warn-br:#5b4720;
  --navy:#151d2e; --navy-2:#101726;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.3);
  --shadow-lg:0 8px 34px rgba(0,0,0,.5);
}
:root[data-text="lg"] { --fs-body:19px; --fs-q:22px; }
:root[data-text="xl"] { --fs-body:21px; --fs-q:25px; }

/* ------------------------------------------------------------------- reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:var(--fs-body);line-height:1.55;
  background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;
  overflow-wrap:break-word}
h1,h2,h3,h4{margin:0 0 .4em;line-height:1.25;font-weight:750;letter-spacing:-.01em}
h1{font-size:1.5rem} h2{font-size:1.18rem} h3{font-size:1.03rem} h4{font-size:.95rem}
p{margin:0 0 .85em}
a{color:var(--blue-d);text-decoration-thickness:1.5px;text-underline-offset:2px}
button{font:inherit;color:inherit}
img{max-width:100%;display:block}
ul,ol{margin:0 0 .9em;padding-left:1.35em}
li{margin:.3em 0}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* ------------------------------------------------------------------ layout */
.app{min-height:100dvh;display:flex;flex-direction:column}

/* One markup for both layouts: on mobile .tabbar is fixed to the bottom and so
   leaves the header flex row; on desktop the header becomes the column itself.
   No JS branch, no reload on resize. */
.topbar{position:sticky;top:0;z-index:40;background:var(--navy);color:#fff;
  display:flex;align-items:center;gap:10px;padding:10px 14px;
  box-shadow:0 1px 0 rgba(255,255,255,.07), 0 2px 12px rgba(0,0,0,.18)}
.topbar .brandrow{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
.topbar .tools{flex:0 0 auto;display:flex;gap:8px}
.topbar .mark{width:30px;height:30px;flex:0 0 30px;border-radius:8px}
.topbar .who{min-width:0;flex:1}
.topbar .who b{display:block;font-size:14px;font-weight:700;letter-spacing:.01em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .who span{display:block;font-size:11px;letter-spacing:.13em;text-transform:uppercase;
  color:#a9bcdc;font-weight:600}
.iconbtn{width:var(--tap);height:40px;display:grid;place-items:center;background:rgba(255,255,255,.11);
  border:1px solid rgba(255,255,255,.16);border-radius:10px;cursor:pointer;color:#fff;
  font-size:17px;line-height:1;padding:0}
.iconbtn:hover{background:rgba(255,255,255,.2)}

main{flex:1;width:100%;max-width:var(--maxw);margin:0 auto;padding:16px 14px 26px}
.tabbar-space{height:calc(64px + var(--safe-b))}

/* bottom tab bar (mobile-first) */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:45;display:grid;
  grid-template-columns:repeat(5,1fr);background:var(--surface);
  border-top:1px solid var(--line);padding-bottom:var(--safe-b);
  box-shadow:0 -2px 16px rgba(15,29,54,.09)}
.tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  min-height:60px;text-decoration:none;color:var(--ink-3);font-size:11px;font-weight:650;
  letter-spacing:.01em;padding:6px 2px 5px;border-top:3px solid transparent}
.tabbar a .ti{font-size:20px;line-height:1}
.tabbar a[aria-current="page"]{color:var(--blue-d);border-top-color:var(--blue);
  background:linear-gradient(to bottom,var(--blue-l),transparent 70%)}

@media (min-width:900px){
  :root{--maxw:900px}
  .app{flex-direction:row}
  .topbar{position:fixed;top:0;left:0;width:264px;height:100dvh;flex-direction:column;
    align-items:stretch;padding:20px 16px;box-shadow:none;border-right:1px solid rgba(255,255,255,.08)}
  .topbar .brandrow{flex:0 0 auto;gap:11px;margin-bottom:22px}
  .topbar .tools{margin-top:auto}
  .tabbar{position:static;grid-template-columns:1fr;background:none;border:0;box-shadow:none;
    padding:0;gap:4px}
  .tabbar a{flex-direction:row;justify-content:flex-start;gap:12px;min-height:46px;font-size:14.5px;
    border-top:0;border-radius:10px;padding:0 12px;color:#c3d2ea}
  .tabbar a[aria-current="page"]{background:rgba(255,255,255,.14);color:#fff;
    border-top-color:transparent}
  .tabbar a .ti{font-size:18px;width:22px;text-align:center}
  main{margin-left:264px;padding:26px 30px 60px}
  .tabbar-space{display:none}
}

/* ------------------------------------------------------------------- cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:16px;margin-bottom:14px;box-shadow:var(--shadow)}
.card.tight{padding:13px 14px}
.card>:last-child,.card>*>:last-child{margin-bottom:0}
.card h2,.card h3{color:var(--ink)}
.muted{color:var(--ink-3)}
.small{font-size:.86rem}
.tiny{font-size:.78rem;line-height:1.45}
.center{text-align:center}
.stack>*+*{margin-top:10px}
.row{display:flex;gap:9px;flex-wrap:wrap;align-items:center}
.row.tight{gap:6px}
.spread{display:flex;gap:12px;align-items:center;justify-content:space-between}
.grow{flex:1;min-width:0}
hr{border:0;border-top:1px solid var(--line);margin:15px 0}

.sect-h{display:flex;align-items:baseline;justify-content:space-between;gap:10px;
  margin:22px 2px 9px}
.sect-h h2{margin:0}
/* Readers here often wear reading glasses — give header links a real target. */
.sect-h a{font-size:.85rem;font-weight:650;white-space:nowrap;padding:10px 4px;margin:-10px -4px}
main>.sect-h:first-child{margin-top:4px}

/* ----------------------------------------------------------------- buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:var(--tap);padding:12px 18px;border-radius:12px;border:1px solid transparent;
  background:var(--blue);color:#fff;font-weight:700;font-size:1rem;cursor:pointer;
  text-decoration:none;text-align:center;line-height:1.25;transition:background .12s,transform .08s}
.btn:hover{background:var(--blue-d)}
.btn:active{transform:translateY(1px)}
.btn.block{width:100%}
.btn.sec{background:var(--surface-3);color:var(--ink);border-color:var(--line-2)}
.btn.sec:hover{background:var(--surface-2)}
.btn.ghost{background:transparent;color:var(--blue-d);border-color:var(--line-2)}
.btn.ghost:hover{background:var(--surface-3)}
.btn.gold{background:var(--gold);color:#241a06}
.btn.gold:hover{filter:brightness(1.07)}
.btn.sm{min-height:38px;padding:8px 13px;font-size:.88rem;border-radius:10px}
.btn.lg{min-height:56px;font-size:1.08rem;padding:14px 22px}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}
.btn .k{font-weight:600;opacity:.8;font-size:.85em}

.chip{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:700;
  padding:4px 10px;border-radius:20px;background:var(--surface-3);color:var(--ink-2);
  border:1px solid var(--line);letter-spacing:.01em;white-space:nowrap}
.chip.ok{background:var(--ok-bg);color:var(--ok);border-color:var(--ok-br)}
.chip.bad{background:var(--bad-bg);color:var(--bad);border-color:var(--bad-br)}
.chip.warn{background:var(--warn-bg);color:var(--warn);border-color:var(--warn-br)}
.chip.blue{background:var(--blue-l);color:var(--blue-d);border-color:var(--blue)}
/* --gold on --gold-l is only ~2.8:1, so gold chips borrow the darker --warn ink
   to clear AA in both themes while keeping the gold field. */
.chip.gold{background:var(--gold-l);color:var(--warn);border-color:var(--gold)}

/* --------------------------------------------------------- the "book" chip */
/* Used everywhere a screen points back into the printed guide. */
.bookref{display:inline-flex;align-items:center;gap:8px;text-decoration:none;
  background:var(--gold-l);border:1px solid var(--gold);color:var(--ink);
  border-radius:11px;padding:9px 13px;font-size:.87rem;font-weight:650;line-height:1.35;
  min-height:42px}
.bookref:hover{filter:brightness(.98)}
.bookref .bi{font-size:1.05rem;flex:0 0 auto}
.bookref b{color:var(--ink)}
.bookref .pg{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:700}

/* ------------------------------------------------------------------- hero */
.hero{background:linear-gradient(158deg,var(--navy) 0%,var(--navy-2) 62%,var(--navy-3) 100%);
  color:#fff;border-radius:var(--r-lg);padding:20px;margin-bottom:14px;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-70px;top:-70px;width:220px;height:220px;
  border-radius:50%;border:26px solid rgba(255,255,255,.045)}
.hero .eyebrow{font-size:11px;letter-spacing:.15em;text-transform:uppercase;
  color:#a9bcdc;font-weight:700;margin-bottom:6px}
.hero h1{color:#fff;font-size:1.42rem;margin-bottom:6px;position:relative}
.hero p{color:#cfdcef;margin:0;font-size:.95rem;position:relative}
.hero .btn.gold{margin-top:14px;position:relative}

/* --------------------------------------------------------------- readiness */
.gauge{display:flex;align-items:center;gap:16px}
.gauge .dial{position:relative;flex:0 0 104px;width:104px;height:104px}
.gauge .dial svg{transform:rotate(-90deg);display:block}
.gauge .dial .val{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.gauge .dial .val b{display:block;font-size:1.62rem;font-weight:700;line-height:1;
  font-variant-numeric:tabular-nums}
.gauge .dial .val span{font-size:.66rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--ink-3);font-weight:700}

.meter{height:9px;border-radius:20px;background:var(--surface-3);overflow:hidden;
  border:1px solid var(--line)}
.meter>i{display:block;height:100%;background:var(--blue);border-radius:20px;
  transition:width .45s cubic-bezier(.2,.7,.3,1)}
.meter.ok>i{background:var(--ok)} .meter.bad>i{background:var(--bad)}
.meter.gold>i{background:var(--gold)}

/* topic mastery rows */
.tlist{display:flex;flex-direction:column;gap:2px}
.trow{display:grid;grid-template-columns:1fr auto;gap:4px 12px;align-items:center;
  padding:11px 4px;border-bottom:1px solid var(--line);text-decoration:none;color:inherit}
.trow:last-child{border-bottom:0}
.trow:hover{background:var(--surface-2)}
.trow .nm{font-weight:700;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.trow .nm .ltr{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:6px;
  background:var(--navy);color:#fff;font-size:.72rem;font-weight:700}
.trow .bar{grid-column:1/-1}
.trow .pct{font-variant-numeric:tabular-nums;font-weight:700;font-size:1rem}

/* --------------------------------------------------------------- tile list */
.tiles{display:grid;gap:11px}
@media (min-width:640px){.tiles.two{grid-template-columns:1fr 1fr}}
.tile{display:flex;gap:14px;align-items:center;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r);padding:15px;text-decoration:none;
  color:inherit;box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s;
  min-height:var(--tap)}
.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.tile .ic{flex:0 0 46px;height:46px;border-radius:12px;background:var(--blue-l);
  display:grid;place-items:center;font-size:22px}
.tile .tx{min-width:0;flex:1}
.tile .tx b{display:block;font-size:1.02rem;font-weight:750;margin-bottom:1px}
.tile .tx span{display:block;font-size:.85rem;color:var(--ink-3);line-height:1.4}
.tile .go{flex:0 0 auto;color:var(--blue-d);font-weight:700;font-size:1.2rem}

/* ------------------------------------------------------------------ exams */
.exam-row{display:flex;align-items:center;gap:12px;padding:13px 4px;
  border-bottom:1px solid var(--line);text-decoration:none;color:inherit}
.exam-row:last-child{border-bottom:0}
.exam-row:hover{background:var(--surface-2)}
.exam-row .n{flex:0 0 40px;height:40px;border-radius:11px;background:var(--surface-3);
  display:grid;place-items:center;font-weight:700;font-size:.9rem;color:var(--ink-2);
  border:1px solid var(--line)}
.exam-row.done .n{background:var(--ok-bg);color:var(--ok);border-color:var(--ok-br)}
.exam-row.failed .n{background:var(--bad-bg);color:var(--bad);border-color:var(--bad-br)}
.exam-row .t{flex:1;min-width:0}
.exam-row .t b{display:block;font-weight:700;font-size:.98rem}
.exam-row .t span{font-size:.8rem;color:var(--ink-3)}

/* ------------------------------------------------------------------ runner */
.runbar{position:sticky;top:0;z-index:30;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r);padding:11px 13px;margin-bottom:13px;
  box-shadow:var(--shadow)}
@media (min-width:900px){.runbar{top:0}}
.runbar .line1{display:flex;align-items:center;gap:10px;justify-content:space-between;
  margin-bottom:9px}
.runbar .qn{font-weight:700;font-variant-numeric:tabular-nums;font-size:.94rem}
.runbar .timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:.94rem;
  color:var(--ink-2)}
.runbar .timer.low{color:var(--bad)}

.qtext{font-size:var(--fs-q);font-weight:650;line-height:1.42;margin:0 0 15px}
.opts{display:flex;flex-direction:column;gap:9px;margin-bottom:6px}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;
  background:var(--surface);border:2px solid var(--line-2);border-radius:12px;
  padding:13px 14px;cursor:pointer;font-size:1rem;line-height:1.42;min-height:var(--tap);
  transition:border-color .12s,background .12s}
.opt:hover{border-color:var(--blue);background:var(--blue-l)}
.opt .ltr{flex:0 0 30px;height:30px;border-radius:9px;background:var(--surface-3);
  display:grid;place-items:center;font-weight:700;font-size:.9rem;border:1px solid var(--line);
  color:var(--ink-2)}
.opt .ot{flex:1;padding-top:2px}
.opt.sel{border-color:var(--blue);background:var(--blue-l)}
.opt.sel .ltr{background:var(--blue);color:#fff;border-color:var(--blue)}
.opt.right{border-color:var(--ok);background:var(--ok-bg)}
.opt.right .ltr{background:var(--ok);color:#fff;border-color:var(--ok)}
.opt.wrong{border-color:var(--bad);background:var(--bad-bg)}
.opt.wrong .ltr{background:var(--bad);color:#fff;border-color:var(--bad)}
.opt[disabled]{cursor:default}
.opt[disabled]:hover{border-color:var(--line-2);background:var(--surface)}
.opt.right[disabled]:hover{border-color:var(--ok);background:var(--ok-bg)}
.opt.wrong[disabled]:hover{border-color:var(--bad);background:var(--bad-bg)}

.expl{border-radius:12px;padding:14px;margin-top:13px;border:1px solid var(--line);
  background:var(--surface-2)}
.expl.right{background:var(--ok-bg);border-color:var(--ok-br)}
.expl.wrong{background:var(--bad-bg);border-color:var(--bad-br)}
.expl .verdict{font-weight:700;font-size:.94rem;margin-bottom:5px;display:flex;
  align-items:center;gap:7px}
.expl.right .verdict{color:var(--ok)} .expl.wrong .verdict{color:var(--bad)}
.expl p{margin:0 0 11px;font-size:.95rem}
.expl .why{color:var(--ink)}

/* ------------------------------------------- the four option explanations
   The differentiator of this book is that every option gets its own reason, so
   the app has to make four blocks readable rather than one. The order is fixed
   and deliberate: the option you actually picked first (that is the belief that
   needs correcting), then the key, then the rest folded away so a correct
   answer does not bury the next question under three paragraphs. */
.why-one{border-left:3px solid var(--line-2);padding:2px 0 2px 11px;margin:0 0 10px}
.why-one:last-child{margin-bottom:0}
.why-one>b{display:block;font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;
  color:var(--ink-2);margin-bottom:3px}
.why-one>p{margin:0;font-size:.94rem;color:var(--ink)}
.why-one.good{border-left-color:var(--ok)}
.why-one.good>b{color:var(--ok)}
.why-one.bad{border-left-color:var(--bad)}
.why-one.bad>b{color:var(--bad)}

.why-rest{margin-top:2px}
.why-rest>summary{cursor:pointer;list-style:none;font-size:.85rem;font-weight:700;
  color:var(--ink-2);padding:7px 0;display:flex;align-items:center;gap:6px}
.why-rest>summary::-webkit-details-marker{display:none}
.why-rest>summary::before{content:"▸";font-size:.8em;transition:transform .15s}
.why-rest[open]>summary::before{transform:rotate(90deg)}
.why-rest>summary:hover{color:var(--ink)}
.why-rest .why-one{margin-top:4px}

/* Appendix C decision cards. */
ul.bul{margin:0;padding-left:0;list-style:none}
ul.bul li{position:relative;padding:7px 0 7px 22px;font-size:.94rem;
  border-bottom:1px solid var(--line)}
ul.bul li:last-child{border-bottom:0}
ul.bul li::before{content:"";position:absolute;left:4px;top:15px;width:7px;height:7px;
  border-radius:50%;background:var(--ink-2)}

.navrow{display:flex;gap:10px;margin-top:16px}
.navrow .btn{flex:1}

/* ---------------------------------------------------------------- results */
.score{text-align:center;padding:8px 0 4px}
.score .big{font-size:3.5rem;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;
  letter-spacing:-.03em}
.score .big.pass{color:var(--ok)} .score .big.fail{color:var(--bad)}
.score .sub{font-size:1rem;color:var(--ink-2);font-weight:650;margin-top:5px}
.score .verdict{display:inline-block;margin-top:11px;font-weight:700;font-size:.84rem;
  letter-spacing:.05em;text-transform:uppercase;padding:6px 14px;border-radius:20px}
.score .verdict.pass{background:var(--ok-bg);color:var(--ok);border:1px solid var(--ok-br)}
.score .verdict.fail{background:var(--bad-bg);color:var(--bad);border:1px solid var(--bad-br)}

.plan{border:2px solid var(--gold);background:var(--gold-l);border-radius:var(--r);padding:16px;
  margin-bottom:14px}
.plan h2{display:flex;align-items:center;gap:9px;margin-bottom:4px;font-size:1.1rem}
.plan .assign{display:flex;align-items:center;gap:12px;padding:11px 0;
  border-bottom:1px dashed rgba(200,134,10,.45)}
.plan .assign:last-of-type{border-bottom:0}
.plan .assign .miss{flex:0 0 auto;min-width:44px;text-align:center;font-weight:700;
  font-size:.78rem;background:var(--bad-bg);color:var(--bad);border:1px solid var(--bad-br);
  border-radius:8px;padding:4px 7px;line-height:1.2}
.plan .assign .what{flex:1;min-width:0}
.plan .assign .what b{display:block;font-size:.97rem}
.plan .assign .what span{font-size:.83rem;color:var(--ink-2)}
.plan .assign .pgs{flex:0 0 auto;font-weight:700;font-variant-numeric:tabular-nums;
  font-size:.95rem;white-space:nowrap}

/* ------------------------------------------------------------------ review */
.askcard{border:2px solid var(--gold);border-radius:var(--r-lg);overflow:hidden;
  margin-bottom:14px;background:var(--surface);box-shadow:var(--shadow-lg)}
/* Deliberately darker than --gold in both themes: this panel carries white text
   at 11px, and #fff on --gold is only ~3:1. Fixed values so it reads the same
   light or dark. */
.askcard .top{background:linear-gradient(140deg,#9a6a08 0%,#6d4805 100%);color:#fff;
  padding:16px 17px}
.askcard .top .kicker{font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  font-weight:700;opacity:.9}
.askcard .top h3{color:#fff;margin:3px 0 2px;font-size:1.16rem}
.askcard .top p{margin:0;font-size:.9rem;color:rgba(255,255,255,.93)}
.askcard .body{padding:16px 17px}
.askcard .paths{display:grid;gap:10px;margin:4px 0 14px}
@media (min-width:600px){.askcard .paths{grid-template-columns:1fr 1fr}}
.askcard .starters{background:var(--surface-2);border:1px solid var(--line);
  border-radius:12px;padding:13px 15px;margin-bottom:12px}
.askcard .starters li{font-size:.9rem;color:var(--ink-2)}
.askcard .yours{display:flex;flex-wrap:wrap;gap:6px;margin:9px 0 0}
.askcard .foot{display:flex;gap:8px;flex-wrap:wrap;align-items:center;
  padding-top:12px;border-top:1px solid var(--line)}
.askcard .foot .lnk{background:none;border:0;padding:8px 6px;color:var(--ink-3);
  font-size:.85rem;font-weight:650;cursor:pointer;text-decoration:underline;min-height:40px}
.askcard .foot .lnk:hover{color:var(--ink)}

/* ------------------------------------------------------------- book map */
.partlbl{font-size:.74rem;letter-spacing:.13em;text-transform:uppercase;font-weight:700;
  color:var(--ink-3);margin:20px 3px 8px}
.chrow{display:flex;gap:12px;align-items:flex-start;padding:12px 4px;
  border-bottom:1px solid var(--line)}
.chrow:last-child{border-bottom:0}
.chrow .cn{flex:0 0 38px;height:38px;border-radius:10px;background:var(--navy);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:.94rem}
.chrow .cb{flex:1;min-width:0}
.chrow .cb b{display:block;font-size:1rem;font-weight:720;line-height:1.3}
.chrow .cb .pg{font-size:.83rem;color:var(--ink-3);font-variant-numeric:tabular-nums}
.chrow .cb .secs{font-size:.83rem;color:var(--ink-3);margin-top:5px;line-height:1.5}
.chrow .rd{flex:0 0 auto}
.readbtn{width:38px;height:38px;border-radius:11px;border:2px solid var(--line-2);
  background:var(--surface);cursor:pointer;display:grid;place-items:center;font-size:1rem;
  color:var(--ink-3);padding:0}
.readbtn[aria-pressed="true"]{background:var(--ok-bg);border-color:var(--ok);color:var(--ok)}
.chrow.read .cn{background:var(--ok)}

/* ------------------------------------------------------------- flashcards */
.fcard{background:var(--surface);border:2px solid var(--line-2);border-radius:var(--r-lg);
  padding:26px 20px;min-height:236px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;cursor:pointer;
  box-shadow:var(--shadow);position:relative}
.fcard .grp{position:absolute;top:12px;left:0;right:0;font-size:.7rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3);font-weight:700;padding:0 14px}
.fcard .front{font-size:1.55rem;font-weight:700;line-height:1.25;letter-spacing:-.01em}
.fcard .back{font-size:1.06rem;line-height:1.5;color:var(--ink-2);max-width:34em}
.fcard .flip{position:absolute;bottom:11px;left:0;right:0;font-size:.76rem;
  color:var(--ink-3);font-weight:650}

/* ------------------------------------------------------------------ audio */
.trk{display:flex;gap:12px;align-items:center;padding:12px 4px;border-bottom:1px solid var(--line);
  cursor:pointer}
.trk:last-child{border-bottom:0}
.trk:hover{background:var(--surface-2)}
.trk .pn{flex:0 0 34px;height:34px;border-radius:50%;background:var(--blue-l);color:var(--blue-d);
  display:grid;place-items:center;font-weight:700;font-size:.84rem}
.trk.playing .pn{background:var(--blue);color:#fff}
.trk .tt{flex:1;font-weight:680}
.trk.playing .tt{color:var(--blue-d)}
.spk{background:var(--gold-l);box-shadow:0 0 0 3px var(--gold-l);border-radius:4px}
.script{max-height:0;overflow:hidden;transition:max-height .3s}
.script.open{max-height:none;padding-top:8px}
.script p{font-size:.94rem;color:var(--ink-2);margin-bottom:.8em}

/* ---------------------------------------------------------------- checklist */
.ck{display:flex;gap:12px;align-items:flex-start;padding:11px 2px;
  border-bottom:1px solid var(--line);cursor:pointer}
.ck:last-child{border-bottom:0}
.ck input{appearance:none;flex:0 0 26px;width:26px;height:26px;margin:1px 0 0;
  border:2px solid var(--line-2);border-radius:7px;background:var(--surface);cursor:pointer;
  display:grid;place-items:center}
.ck input:checked{background:var(--ok);border-color:var(--ok)}
.ck input:checked::after{content:"✓";color:#fff;font-size:16px;font-weight:900;line-height:1}
.ck span{flex:1;font-size:.96rem}
.ck input:checked+span{color:var(--ink-3);text-decoration:line-through}

/* ----------------------------------------------------------------- glossary */
.search{display:flex;align-items:center;gap:9px;background:var(--surface);
  border:2px solid var(--line-2);border-radius:12px;padding:0 13px;margin-bottom:13px}
.search input{flex:1;border:0;background:none;font:inherit;color:inherit;padding:13px 0;
  min-height:var(--tap);outline:none;min-width:0}
.search:focus-within{border-color:var(--blue)}
.search input:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:6px}
.gterm{padding:12px 3px;border-bottom:1px solid var(--line)}
.gterm:last-child{border-bottom:0}
.gterm b{display:block;font-size:1rem;color:var(--ink)}
.gterm span{font-size:.92rem;color:var(--ink-2)}
mark{background:var(--gold-l);color:var(--ink);border-radius:3px;padding:0 2px;font-weight:700}

/* -------------------------------------------------------------------- misc */
.note{border-left:4px solid var(--blue);background:var(--blue-l);border-radius:0 11px 11px 0;
  padding:12px 14px;margin:0 0 13px;font-size:.92rem}
.note.gold{border-left-color:var(--gold);background:var(--gold-l)}
.note.warn{border-left-color:var(--warn);background:var(--warn-bg)}
.note b{display:block;font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;
  margin-bottom:3px;color:var(--ink-2)}
.note p:last-child{margin-bottom:0}

.kv{display:grid;grid-template-columns:auto 1fr;gap:7px 14px;font-size:.94rem}
.kv dt{font-weight:750;color:var(--ink-2)}
.kv dd{margin:0}

.empty{text-align:center;padding:34px 16px;color:var(--ink-3)}
.empty .e{font-size:2.4rem;display:block;margin-bottom:8px}

.toast{position:fixed;left:50%;bottom:calc(78px + var(--safe-b));transform:translateX(-50%);
  background:var(--navy-3);color:#fff;padding:12px 18px;border-radius:12px;font-size:.92rem;
  font-weight:650;box-shadow:var(--shadow-lg);z-index:70;max-width:min(92vw,420px);
  text-align:center;animation:tin .22s ease-out}
@keyframes tin{from{opacity:0;transform:translate(-50%,10px)}}
@media (min-width:900px){.toast{bottom:26px;left:auto;right:26px;transform:none;animation:none}}

.fine{font-size:.76rem;color:var(--ink-3);line-height:1.5}
footer.legal{max-width:var(--maxw);margin:0 auto;padding:8px 16px 20px;text-align:center}
@media (min-width:900px){footer.legal{margin-left:264px;padding-bottom:40px}}
.badge-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--gold);
  margin-left:5px;vertical-align:middle}