:root{
  --ink:#0d1f33; --ink2:#3b4756; --mute:#6b7683; --line:#dfe3e8; --line2:#eef1f4;
  --paper:#f7f6f2; --card:#ffffff; --hl:#ffe45c; --hl2:#fff5b8;
  --blue:#0a66c2; --blue2:#e8f1fb; --blue3:#c9dff5; --green:#1a7f4b; --green2:#e3f4ea; --red:#c0392b; --red2:#fbe9e6; --amber:#b7791f; --amber2:#fdf0cf;
  --violet:#6b4fbb; --violet2:#ece7f8; --brand:#0a66c2; --brandg:#1a7f4b;
  --maxw:880px; --nav:264px; --top:60px;
  --r-s:8px; --r-m:12px; --r-l:18px;
  --shadow:0 1px 2px rgba(13,31,51,.05),0 8px 24px -12px rgba(13,31,51,.12);
  box-sizing:border-box;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --ink:#eef1f5; --ink2:#c7cfd8; --mute:#9aa5b1; --line:#2b3542; --line2:#1f2833;
  --paper:#0f151d; --card:#171f2a; --hl:#e6c94a; --hl2:#3a3618; --blue:#6fb0f0; --blue2:#1b2b3d; --blue3:#24405c; --green:#5fcf8a; --green2:#173b27; --red:#f08a7c; --red2:#3d1f1b; --amber:#e2b04c; --amber2:#3b2f12; --violet:#a690e6; --violet2:#2a2340; --brand:#1f6fc4; --brandg:#1f8f55;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px -12px rgba(0,0,0,.5);
}}
:root[data-theme="dark"]{ --ink:#eef1f5; --ink2:#c7cfd8; --mute:#9aa5b1; --line:#2b3542; --line2:#1f2833; --paper:#0f151d; --card:#171f2a; --hl:#e6c94a; --hl2:#3a3618; --blue:#6fb0f0; --blue2:#1b2b3d; --blue3:#24405c; --green:#5fcf8a; --green2:#173b27; --red:#f08a7c; --red2:#3d1f1b; --amber:#e2b04c; --amber2:#3b2f12; --violet:#a690e6; --violet2:#2a2340; --brand:#1f6fc4; --brandg:#1f8f55; --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px -12px rgba(0,0,0,.5); }
*{box-sizing:inherit}
html{scroll-padding-top:calc(var(--top) + 12px + env(safe-area-inset-top,0px)); scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} *{transition:none!important;animation:none!important} }

body{margin:0;background:var(--paper);color:var(--ink);font-family:"Public Sans",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;padding-bottom:env(safe-area-inset-bottom,0px)}
h1,h2,h3,h4{font-family:"Fraunces","Iowan Old Style",Georgia,serif;line-height:1.15;margin:0 0 .4em;font-weight:700;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:500}
h2{font-size:clamp(1.6rem,3vw,2.1rem);margin:0 0 .3rem}
h2 .mark{background:linear-gradient(transparent 58%,var(--hl) 58%,var(--hl) 92%,transparent 92%);padding:0 .12em}
h3{font-size:1.25rem;margin-top:1.8rem}
h4{font-size:1.02rem;margin-top:1.1rem;font-family:"Public Sans",sans-serif;font-weight:700}
p{margin:.45em 0 .9em;max-width:70ch}
a{color:var(--blue)}
b,strong{font-weight:700}
small,.small{font-size:.86rem;color:var(--mute)}
code,kbd{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;background:var(--blue2);padding:.05em .35em;border-radius:4px}
ul,ol{padding-left:1.25rem;max-width:72ch} li{margin:.3em 0}
li::marker{color:var(--blue)}
img{max-width:100%}
svg{max-width:100%;height:auto}
.eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--mute)}

/* tables */
table{border-collapse:collapse;width:100%;font-size:.93rem;margin:.6rem 0 1.2rem;background:var(--card);border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line)}
th,td{text-align:left;vertical-align:top;padding:.6rem .7rem;border-bottom:1px solid var(--line2)}
tr:last-child td{border-bottom:0}
th{font-weight:700;background:var(--blue2);font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink2)}
td:first-child{font-weight:600}
tbody tr:hover td{background:color-mix(in srgb,var(--blue2) 45%,transparent)}
.tw{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px;padding:0 4px}
.tw table{min-width:520px}
@media (max-width:640px){
  .tw table{min-width:0;border:0;background:transparent}
  .tw thead,.tw tr.hd{display:none}
  .tw tr{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:.35rem .8rem;margin:.55rem 0;box-shadow:var(--shadow)}
  .tw td{display:block;border:0;padding:.35rem 0;white-space:normal}
  .tw td[data-l]::before{content:attr(data-l);display:block;font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);margin-bottom:.05rem}
  .tw td:first-child{font-family:"Fraunces",serif;font-size:1.1rem;font-weight:600;padding-top:.5rem}
  .tw td:first-child::before{display:none}
}

/* top bar */
.top{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:.6rem;padding:.55rem 1rem;padding-top:calc(.55rem + env(safe-area-inset-top,0px));min-height:var(--top)}
.top .brand{font-family:"Fraunces",serif;font-weight:700;font-size:1.05rem;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--ink);min-width:0}
.top .brand .logo{width:28px;height:28px;border-radius:6px;background:var(--brand);color:#fff;display:inline-grid;place-items:center;font-family:"Public Sans",sans-serif;font-weight:800;font-size:.95rem;flex:none}
.top .brand span.t{background:var(--hl);padding:.02em .3em;color:#0d1f33;border-radius:3px}
.top .brand em{font-style:normal;font-weight:500;color:var(--mute);font-size:.9rem}
.rp{position:absolute;left:0;bottom:-1px;height:3px;background:var(--blue);width:0;transition:width .15s linear}
.btn{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:.5rem .85rem;border-radius:var(--r-s);font:inherit;font-size:.9rem;cursor:pointer;display:inline-flex;align-items:center;gap:.4rem;line-height:1.2}
a.btn{text-decoration:none}
.btn:hover{border-color:var(--blue);color:var(--blue)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--hl);outline-offset:2px}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)} .btn.primary:hover{background:color-mix(in srgb,var(--brand) 85%,#000);color:#fff}
.btn.small{padding:.32rem .6rem;font-size:.82rem}
.btn.ghost{background:transparent}
.btn.ok{background:var(--green2);border-color:var(--green);color:var(--green)}
.btn svg{width:16px;height:16px}

/* layout */
.wrap{display:grid;grid-template-columns:var(--nav) minmax(0,1fr);gap:0;min-height:100vh}
nav.side{position:sticky;top:calc(var(--top) + env(safe-area-inset-top,0px));height:calc(100vh - var(--top));overflow-y:auto;border-right:1px solid var(--line);padding:1rem .8rem 3rem;font-size:.9rem;scrollbar-width:thin}
nav.side a{display:flex;align-items:center;gap:.45rem;color:var(--ink2);text-decoration:none;padding:.34rem .55rem;border-radius:6px;border-left:3px solid transparent}
nav.side a:hover{background:var(--blue2)}
nav.side a.on{border-left-color:var(--blue);color:var(--ink);font-weight:600;background:var(--blue2)}
nav.side a .n{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.72rem;color:var(--mute);width:2.3rem;white-space:nowrap;flex:none}
nav.side a .d{margin-left:auto;font-size:.68rem;color:var(--mute);font-weight:600;letter-spacing:.03em}
nav.side a.read .n{color:var(--green)}
nav.side a.read .n::after{content:" ✓"}
nav.side .grp{margin:1rem .55rem .3rem;color:var(--mute);font-size:.72rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase}
nav.side .navpg{margin:.2rem .55rem .6rem;font-size:.8rem;color:var(--mute)}
main{min-width:0;padding:1.2rem clamp(1rem,4vw,3rem) 7rem;max-width:calc(var(--maxw) + 6rem)}
section{padding:0 0 2.4rem;margin-bottom:2rem;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:0}
@media (max-width:900px){ .wrap{grid-template-columns:1fr} nav.side{display:none} nav.side.open{display:block;position:fixed;left:0;right:0;top:calc(var(--top) + env(safe-area-inset-top,0px));height:auto;max-height:72vh;background:var(--card);z-index:50;box-shadow:0 12px 30px rgba(0,0,0,.25);border-bottom:1px solid var(--line)} .menu{display:inline-flex} }
@media (min-width:901px){ .menu{display:none} }
@media (max-width:520px){ .top .brand em{display:none} .top .brand{font-size:.95rem} }

/* chapter header */
.ch{display:flex;gap:.9rem;align-items:flex-start;margin:1.2rem 0 1rem}
.ch .ico{flex:none;width:52px;height:52px;border-radius:14px;background:var(--blue2);color:var(--blue);display:grid;place-items:center;border:1px solid var(--blue3)}
.ch .ico svg{width:26px;height:26px}
.ch .meta{display:flex;flex-wrap:wrap;gap:.35rem .8rem;font-size:.8rem;color:var(--mute);margin-top:.2rem;align-items:center}
.ch .meta .day{background:var(--hl);color:#0d1f33;font-weight:700;padding:.05em .5em;border-radius:99px;font-size:.74rem}
.ch .meta .num{font-family:ui-monospace,Menlo,Consolas,monospace}
.tldr{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--blue);border-radius:0 var(--r-m) var(--r-m) 0;padding:.9rem 1.1rem;margin:.8rem 0 1.2rem;box-shadow:var(--shadow);max-width:76ch}
.tldr .eyebrow{color:var(--blue);margin-bottom:.15rem}
.tldr p{margin:0;font-size:1.05rem;line-height:1.5;max-width:none}
.nums{display:flex;flex-wrap:wrap;gap:.45rem;margin:.2rem 0 1.2rem}
.nums span{background:var(--hl2);border:1px solid color-mix(in srgb,var(--hl) 60%,transparent);padding:.25rem .6rem;border-radius:99px;font-size:.84rem;color:var(--ink)}
.nums span b{font-family:"Fraunces",serif;font-size:1.05rem;font-weight:600;margin-right:.25rem}
.takeaways{margin-top:2rem;background:var(--green2);border:1px solid color-mix(in srgb,var(--green) 40%,transparent);border-radius:var(--r-m);padding:.9rem 1.1rem;max-width:76ch}
.takeaways .eyebrow{color:var(--green)}
.takeaways ul{margin:.3rem 0 .6rem;padding-left:1.2rem}
.takeaways li{margin:.25rem 0}
.takeaways .row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-top:.5rem}
.takeaways .row .small{margin-left:auto}
.fig{margin:1.2rem 0 1.4rem}
.fig .cap{font-size:.84rem;color:var(--mute);margin-top:.4rem;max-width:70ch}
.fig svg{display:block;width:100%;height:auto}
.fig svg text{font-family:"Public Sans",system-ui,sans-serif}
.fig .serif{font-family:"Fraunces",serif}

/* components */
.hero{padding:1.5rem 0 1rem;border-bottom:0}
.hero .lede{font-size:1.15rem;color:var(--ink2);max-width:62ch}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(220px,.9fr);gap:1.5rem;align-items:center}
@media (max-width:760px){ .hero-grid{grid-template-columns:1fr} .hero-art{max-width:320px;margin:0 auto} }
.hero-art svg{width:100%;height:auto;display:block}
.today{display:grid;grid-template-columns:auto 1fr;gap:.9rem;align-items:center;background:var(--brand);color:#fff;border-radius:var(--r-l);padding:.9rem 1.1rem;margin:1.2rem 0;box-shadow:var(--shadow)}
.today .big{font-family:"Fraunces",serif;font-size:2rem;font-weight:500;line-height:1;text-align:center;min-width:3.2rem}
.today .big small{display:block;font-family:"Public Sans",sans-serif;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;opacity:.85;margin-top:.15rem}
.today p{margin:0;color:#fff;max-width:none}
.today a{color:#fff;font-weight:600}
.today .prog{height:6px;background:rgba(255,255,255,.28);border-radius:99px;overflow:hidden;margin-top:.5rem}
.today .prog i{display:block;height:100%;background:var(--hl);width:0}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.7rem;margin:1rem 0}
.fact{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:.8rem .9rem;box-shadow:var(--shadow)}
.fact b{display:block;font-family:"Fraunces",serif;font-size:1.8rem;font-weight:500;line-height:1.1;color:var(--blue)}
.fact span{font-size:.82rem;color:var(--mute);display:block;margin-top:.2rem}
.callout{border-left:4px solid var(--hl);background:var(--hl2);padding:.8rem 1rem;border-radius:0 var(--r-s) var(--r-s) 0;margin:1rem 0;max-width:72ch}
.callout.blue{border-left-color:var(--blue);background:var(--blue2)}
.callout.red{border-left-color:var(--red);background:var(--red2)}
.pill{display:inline-block;padding:.1em .55em;border-radius:99px;font-size:.76rem;font-weight:600;background:var(--blue2);color:var(--ink);margin:.1em .2em .1em 0;white-space:nowrap}
.pill.g{background:var(--green2);color:var(--green)}.pill.r{background:var(--red2);color:var(--red)}.pill.a{background:var(--amber2);color:var(--amber)}.pill.v{background:var(--violet2);color:var(--violet)}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:.8rem;margin:.6rem 0 1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:.9rem 1rem;box-shadow:var(--shadow)}
.card h4{margin-top:0}
.card p:last-child,.card ul:last-child{margin-bottom:0}
.term{padding:.6rem 0;border-bottom:1px solid var(--line)}
.term b{font-weight:700} .term .abbr{color:var(--mute);font-weight:500}
.term .cat{float:right}
input[type=text],input[type=number],input[type=search],select{font:inherit;padding:.55rem .65rem;border:1px solid var(--line);border-radius:var(--r-s);background:var(--card);color:var(--ink);width:100%}
label{font-size:.85rem;color:var(--ink2);display:block;margin:.4rem 0 .15rem}
.calc{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.6rem}
.out{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.6rem;margin-top:.8rem}
.out .fact b{font-size:1.35rem}
.funnelviz{margin:1.2rem 0 .4rem}
.funnelviz .row{display:grid;grid-template-columns:130px 1fr 90px;gap:.6rem;align-items:center;font-size:.9rem;padding:.2rem 0}
.funnelviz .row .bar{height:22px;border-radius:5px;background:var(--blue);min-width:6px;transition:width .3s}
.funnelviz .row:nth-child(2n) .bar{background:color-mix(in srgb,var(--blue) 70%,var(--card))}
.funnelviz .row .v{text-align:right;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.82rem}
.funnelviz .step{grid-column:1/-1;font-size:.78rem;color:var(--mute);padding-left:130px}
@media (max-width:600px){ .funnelviz .row{grid-template-columns:100px 1fr 80px} .funnelviz .step{padding-left:100px} }

/* plan */
.plan .day{display:grid;grid-template-columns:130px 1fr;gap:.6rem;padding:.7rem 0;border-bottom:1px solid var(--line)}
.plan .day.today{background:var(--hl2);margin:0 -.6rem;padding:.7rem .6rem;border-radius:var(--r-s)}
.plan .day .d{font-family:"Fraunces",serif;font-size:1.05rem;font-weight:700}
.plan .day .d small{display:block;font-family:"Public Sans",sans-serif;font-weight:400}
.plan .day .d .tg{display:inline-block;font-family:"Public Sans",sans-serif;font-size:.66rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:var(--brand);color:#fff;padding:.05em .45em;border-radius:99px;margin-top:.2rem}
.plan label{display:flex;gap:.5rem;align-items:flex-start;margin:.25rem 0;font-size:.95rem;color:var(--ink);cursor:pointer}
.plan input{margin-top:.3rem;accent-color:var(--blue);width:1.05rem;height:1.05rem;flex:none}
.plan label.done{text-decoration:line-through;color:var(--mute)}
@media (max-width:600px){ .plan .day{grid-template-columns:1fr} }
.progress{height:10px;background:var(--line);border-radius:99px;overflow:hidden;margin:.5rem 0 1rem}
.progress i{display:block;height:100%;background:var(--blue);width:0;transition:width .3s}
.timeline{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;margin:.8rem 0 1.2rem}
.timeline a{display:block;text-decoration:none;color:var(--ink2);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:.4rem .2rem;text-align:center;font-size:.72rem;line-height:1.25}
.timeline a b{display:block;font-family:"Fraunces",serif;font-size:1.05rem;color:var(--ink)}
.timeline a.past{background:var(--green2);border-color:color-mix(in srgb,var(--green) 40%,transparent)}
.timeline a.now{background:var(--brand);border-color:var(--brand);color:#fff} .timeline a.now b{color:#fff}
.timeline a.exam{background:var(--hl);border-color:var(--hl);color:#0d1f33} .timeline a.exam b{color:#0d1f33}
@media (max-width:600px){ .timeline{grid-template-columns:repeat(5,1fr)} }

/* flashcards */
.fc{perspective:1200px;max-width:600px;margin:.8rem 0}
.fc .inner{position:relative;min-height:260px;transition:transform .5s;transform-style:preserve-3d;cursor:pointer}
.fc.flip .inner{transform:rotateY(180deg)}
.fc .face{position:absolute;inset:0;overflow:auto;backface-visibility:hidden;background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:1.3rem;display:flex;flex-direction:column;justify-content:center;font-size:1.05rem;box-shadow:var(--shadow)}
.fc .face.back{transform:rotateY(180deg);background:var(--hl2);border-color:var(--hl)}
.fc .face .q{font-family:"Fraunces",serif;font-size:1.35rem;font-weight:500}
.fc .face .tag{font-size:.74rem;color:var(--mute);margin-bottom:.4rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.fcbar{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;margin:.5rem 0}
.fcstat{display:flex;gap:.8rem;flex-wrap:wrap;font-size:.85rem;color:var(--mute);margin:.3rem 0}
.fcstat b{color:var(--ink)}
/* quiz */
.q{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:1.1rem;margin:.8rem 0;max-width:680px;box-shadow:var(--shadow)}
.q .stem{font-weight:600;margin-bottom:.6rem;font-size:1.05rem}
.q .opt{display:block;width:100%;text-align:left;padding:.6rem .75rem;margin:.35rem 0;border:1px solid var(--line);border-radius:var(--r-s);background:var(--paper);color:var(--ink);font:inherit;cursor:pointer}
.q .opt:hover{border-color:var(--blue)}
.q .opt.ok{border-color:var(--green);background:var(--green2);color:var(--ink)}
.q .opt.no{border-color:var(--red);background:var(--red2);color:var(--ink)}
.q .why{margin-top:.6rem;font-size:.92rem;color:var(--ink2);display:none;padding:.6rem .8rem;background:var(--blue2);border-radius:var(--r-s)}
.q.done .why{display:block}
.q .topic{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--mute);font-weight:700;margin-bottom:.3rem}
.score{font-family:"Fraunces",serif;font-size:2rem;font-weight:500}
.score.pass{color:var(--green)} .score.fail{color:var(--red)}
.qb{display:grid;grid-template-columns:150px 1fr auto;gap:.5rem .8rem;align-items:center;font-size:.9rem;margin:.8rem 0}
.qb .bar{height:10px;background:var(--line);border-radius:99px;overflow:hidden}
.qb .bar i{display:block;height:100%;background:var(--green)}
.qb .bar i.low{background:var(--red)}
.qb a{font-size:.82rem;white-space:nowrap}
.flow{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;margin:.5rem 0 1rem}
.flow span{background:var(--card);border:1px solid var(--line);border-radius:var(--r-s);padding:.4rem .65rem;font-size:.9rem}
.flow i{color:var(--mute);font-style:normal}
details{border:1px solid var(--line);border-radius:var(--r-m);padding:.5rem .9rem;margin:.5rem 0;background:var(--card)}
summary{cursor:pointer;font-weight:600}
.kv{display:grid;grid-template-columns:minmax(0,max-content) minmax(0,1fr);gap:.35rem 1rem;font-size:.95rem;max-width:72ch;background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:.8rem 1rem}
.kv b{font-weight:700;color:var(--blue)}
@media (max-width:520px){ .kv{grid-template-columns:1fr;gap:.1rem} .kv b{margin-top:.5rem} .kv b:first-child{margin-top:0} }
.src{font-size:.8rem;color:var(--mute)}
footer{color:var(--mute);font-size:.82rem;padding:2rem 0;border-top:1px solid var(--line);max-width:72ch}

/* boolean chips */
.bool{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;margin:.6rem 0 1rem;font-size:.9rem}
.bool .f{background:var(--card);border:1px solid var(--line);border-radius:var(--r-s);padding:.4rem .6rem;box-shadow:var(--shadow)}
.bool .f small{display:block;font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;color:var(--mute);font-weight:700}
.bool .f em{font-style:normal;color:var(--violet);font-weight:700;margin:0 .2rem}
.bool .op{font-weight:800;font-size:.8rem;letter-spacing:.06em;color:var(--blue)}
.bool .op.not{color:var(--red)}

/* cheat sheet */
.cheat{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:.8rem}
.cheat .card ul{padding-left:1rem;margin:.3rem 0 0;font-size:.9rem}
.cheat .card li{margin:.2rem 0}
.cheat .card b{color:var(--blue)}

/* mobile bottom bar */
.mbar{display:none}
@media (max-width:900px){
  .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:45;background:color-mix(in srgb,var(--card) 92%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:.45rem .6rem calc(.45rem + env(safe-area-inset-bottom,0px));gap:.4rem;justify-content:space-between}
  .mbar .btn{flex:1;justify-content:center;font-size:.85rem}
  main{padding-bottom:6.5rem}
}
.totop{position:fixed;right:1rem;bottom:calc(1rem + env(safe-area-inset-bottom,0px));z-index:44;opacity:0;pointer-events:none;transition:opacity .2s}
.totop.show{opacity:1;pointer-events:auto}
@media (max-width:900px){ .totop{bottom:calc(4.6rem + env(safe-area-inset-bottom,0px))} }

@media print{
  .top,nav.side,.mbar,.totop,.btn,.today,.hero-art,.takeaways .row{display:none!important}
  .wrap{display:block} main{max-width:none;padding:0}
  body{font-size:11pt;background:#fff;color:#000}
  section{break-inside:auto;page-break-after:auto}
  #cheat{page-break-before:always}
  .tw table{min-width:0}
  a{color:#000;text-decoration:none}
}

.fmts{display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:.7rem;margin:.8rem 0 1.2rem}
.fmts figure{margin:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:.55rem .55rem .5rem;box-shadow:var(--shadow)}
.fmts figure svg{width:100%;height:auto;display:block;border-radius:6px}
.fmts figcaption{font-size:.8rem;margin-top:.45rem;line-height:1.35;color:var(--ink2)}
.fmts figcaption b{display:block;color:var(--ink);font-size:.86rem}
.mtype{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.7rem;margin:.6rem 0 1.2rem}
.mtype .card{border-top:4px solid var(--blue)}
.mtype .card:nth-child(2){border-top-color:var(--violet)} .mtype .card:nth-child(3){border-top-color:var(--amber)}
.mtype .f{font-family:"Fraunces",serif;font-size:1.25rem;margin:.2rem 0 .3rem}
.mtype .f em{font-style:normal;color:var(--blue)} .mtype .card:nth-child(2) .f em{color:var(--violet)} .mtype .card:nth-child(3) .f em{color:var(--amber)}
.mtype ul{margin:0;padding-left:1rem;font-size:.9rem}
.dach{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:.7rem;margin:.6rem 0 1.2rem}
.dach .card{position:relative;padding-top:1rem}
.dach .cc{font-family:"Fraunces",serif;font-size:2rem;font-weight:600;color:var(--blue);line-height:1}
.dach .nm{font-weight:700;margin:.15rem 0 .4rem}
.dach ul{margin:0;padding-left:1rem;font-size:.88rem}
.lgfwrap{display:grid;grid-template-columns:minmax(200px,260px) 1fr;gap:1.2rem;align-items:center;margin:.8rem 0 1.2rem}
@media (max-width:640px){ .lgfwrap{grid-template-columns:1fr} .lgfwrap svg{max-width:260px;margin:0 auto} }
.lgfwrap ol{margin:0;font-size:.95rem}

/* ---- multi-page additions ---- */
nav.side a.home{font-weight:700;color:var(--ink)}
.ql{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.8rem;margin:.6rem 0 1.4rem}
.ql a{display:block;text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:1rem 1rem .9rem;box-shadow:var(--shadow);transition:transform .12s,border-color .12s}
.ql a:hover{transform:translateY(-2px);border-color:var(--blue)}
.ql .ico{width:40px;height:40px;border-radius:11px;background:var(--blue2);color:var(--blue);display:grid;place-items:center;border:1px solid var(--blue3);margin-bottom:.6rem}
.ql .ico svg{width:22px;height:22px}
.ql b{display:block;font-family:"Fraunces",serif;font-size:1.2rem;font-weight:600;margin-bottom:.15rem}
.ql span{display:block;font-size:.86rem;color:var(--ink2);line-height:1.4}
.ql .st{margin-top:.55rem;font-size:.76rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--blue)}
.ql a.hot{background:var(--hl2);border-color:color-mix(in srgb,var(--hl) 60%,transparent)}
.ql a.hot .ico{background:var(--hl);color:#0d1f33;border-color:transparent}
.chlist{list-style:none;padding:0;margin:.6rem 0 1.4rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:.5rem;max-width:none}
.chlist li{margin:0}
.chlist a{display:grid;grid-template-columns:2rem 1fr auto;gap:.6rem;align-items:center;text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:.6rem .8rem}
.chlist a:hover{border-color:var(--blue)}
.chlist .n{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.78rem;color:var(--mute)}
.chlist a.read .n{color:var(--green)} .chlist a.read .n::after{content:" ✓"}
.chlist .t{font-weight:600} .chlist .t small{display:block;font-weight:400;color:var(--mute);font-size:.78rem}
.chlist .day{background:var(--hl);color:#0d1f33;font-weight:700;padding:.05em .5em;border-radius:99px;font-size:.72rem;white-space:nowrap}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;margin:2.2rem 0 0}
.pager a{display:block;text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:.8rem 1rem;box-shadow:var(--shadow)}
.pager a:hover{border-color:var(--blue)}
.pager a small{display:block;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);margin-bottom:.2rem}
.pager a.next{text-align:right}
.pager a b{font-family:"Fraunces",serif;font-weight:600;font-size:1.05rem}
@media (max-width:520px){ .pager{grid-template-columns:1fr} .pager a.next{text-align:left} }
.crumb{font-size:.82rem;color:var(--mute);margin:.2rem 0 0}
.crumb a{color:var(--mute);text-decoration:none} .crumb a:hover{color:var(--blue)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.6rem;margin:.6rem 0 1.2rem}
.stats .fact b{font-size:1.5rem}

/* icons */
.ei{display:inline-grid;place-items:center;vertical-align:-3px;margin-right:.35rem}
.ei svg{width:15px;height:15px}
.hi{display:inline-grid;place-items:center;vertical-align:-4px;margin-right:.4rem;color:var(--blue)}
.hi svg{width:18px;height:18px}
.ci{float:left;margin:.1rem .55rem 0 0;color:var(--amber)}
.ci svg{width:18px;height:18px}
.callout.blue .ci{color:var(--blue)} .callout.red .ci{color:var(--red)}
nav.side a .i{display:inline-grid;place-items:center;color:var(--mute);flex:none}
nav.side a .i svg{width:15px;height:15px}
nav.side a.on .i,nav.side a:hover .i{color:var(--blue)}
.top .btn svg{width:18px;height:18px}
.ic-sun{display:none} .ic-moon{display:inline-grid}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .ic-sun{display:inline-grid} :root:not([data-theme="light"]) .ic-moon{display:none} }
:root[data-theme="dark"] .ic-sun{display:inline-grid} :root[data-theme="dark"] .ic-moon{display:none}
.plan label .ti{display:inline-grid;place-items:center;color:var(--blue);flex:none;margin-top:.2rem}
.plan label .ti svg{width:16px;height:16px}
.plan label.done .ti{color:var(--mute)}
.mbar .btn svg{width:16px;height:16px}
.mtype .eyebrow .ei{color:var(--blue)} .mtype .card:nth-child(2) .eyebrow .ei{color:var(--violet)} .mtype .card:nth-child(3) .eyebrow .ei{color:var(--amber)}

/* generated hero picture (falls back to the SVG art when the file is missing) */
.hero-pic{border-radius:var(--r-l);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:var(--card)}
.hero-pic img{display:block;width:100%;height:auto}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .hero-pic img{filter:brightness(.92)} }
:root[data-theme="dark"] .hero-pic img{filter:brightness(.92)}

/* Practice controls retain the shared design while meeting the touch target size. */
#flash .btn,#daily .btn,#daily .opt,.day.today a[href="/daily"]{min-height:40px}
#fcTopic,#fcMode{flex:1 1 12rem;width:auto;min-width:0;min-height:40px}

.gl{color:inherit;text-decoration:underline dotted var(--blue);text-underline-offset:.2em;cursor:help}
.glpop{position:fixed;z-index:60;width:340px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px);overflow:auto;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--shadow);padding:1rem;overflow-wrap:anywhere}
.glpop[hidden]{display:none}
.glpop b{display:block;padding-right:2.6rem;font:600 1.15rem "Fraunces",serif}
.glpop p{margin:.65rem 0;font-size:.94rem}
.glpop-expansion{color:var(--mute);font-size:.85rem;margin-top:.35rem}
.glpop .glpop-close{float:right;min-width:40px;min-height:40px;margin:-.5rem -.5rem 0 0}
.glpop-link{display:flex;align-items:center;min-height:44px;margin-top:.4rem}
.glpop-handle{display:none}
@media(max-width:520px){
  .glpop{left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));top:auto;width:auto;max-width:none;max-height:70dvh;padding-top:.65rem}
  .glpop-handle{display:block;width:36px;height:4px;border-radius:99px;background:var(--line);margin:0 auto .7rem}
}
@media print{.glpop{display:none!important}.gl{text-decoration:none}}

#searchBox{display:none;min-width:0;max-width:260px;min-height:40px}
#searchBtn{flex-shrink:0;min-width:40px;min-height:40px}
.site-search{position:fixed;z-index:60;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--shadow);width:460px;max-width:calc(100vw - 24px);overflow:auto;overscroll-behavior:contain}
.site-search[hidden]{display:none}
.search-toolbar{display:none}
.search-status{padding:.65rem .9rem;font-size:.85rem;color:var(--mute)}
.search-status:empty{padding:0}
.search-result{display:grid;grid-template-columns:auto 1fr;align-items:start;gap:.3rem .6rem;min-height:44px;padding:.75rem .9rem;color:var(--ink);text-decoration:none;border-top:1px solid var(--line);overflow-wrap:anywhere}
.search-result:hover,.search-result.selected,.search-result:focus-visible{background:var(--blue2);color:var(--ink)}
.search-snippet{grid-column:1/-1;font-size:.85rem;color:var(--mute)}
.site-search mark{background:var(--hl2);color:var(--ink)}
@media(min-width:901px){
  #searchBox{display:block;flex:0 1 260px}
  .site-search.search-empty{visibility:hidden}
}
@media(max-width:900px){
  .site-search{inset:0!important;width:100%;height:100dvh;max-width:none;max-height:none!important;border:0;border-radius:0;display:flex;flex-direction:column;padding:env(safe-area-inset-top,0px) 0 env(safe-area-inset-bottom,0px)}
  .search-toolbar{display:flex;gap:.6rem;padding:.75rem;flex-shrink:0}
  .search-toolbar #searchBox{display:block;flex:1;max-width:none;font-size:16px}
  .search-toolbar .btn{min-height:44px}
  #searchResults{overflow:auto;overscroll-behavior:contain}
  .search-status{flex-shrink:0}
}
@media print{.site-search{display:none!important}}

.sync-panel .sync-actions{display:flex;align-items:center;flex-wrap:wrap;gap:.65rem}
.sync-panel .btn,.sync-panel input{min-height:44px}
.sync-panel [hidden]{display:none!important}
.sync-panel form{margin-top:1rem}
.sync-panel label{display:block;margin-bottom:.4rem}
.sync-panel input{min-width:0;width:12ch;max-width:100%;font:inherit;letter-spacing:.06em;padding:.5rem;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:var(--r-s)}
.sync-panel .sync-code{font-family:'Fraunces',serif;font-size:clamp(1.5rem,6vw,2.2rem);letter-spacing:.08em;overflow-wrap:anywhere}
.sync-error{color:var(--red);font-size:.9rem;margin-top:.65rem}
.sync-error:empty{display:none}
.sync-panel .btn:disabled{opacity:.6;cursor:wait}

.shots{margin:1.5rem 0}
.shots>.eyebrow{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem}
.shots>.eyebrow svg{width:20px;height:20px;flex-shrink:0}
.shots-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}
.shots figure{margin:0;min-width:0}
.shot{display:block;border-radius:var(--r-m)}
.shot img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--line);border-radius:var(--r-m)}
.shots figcaption{font-size:.82rem;color:var(--mute);margin-top:.4rem;overflow-wrap:anywhere}
.shot-lightbox{position:fixed;inset:0;z-index:70;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--ink) 75%,transparent);padding:1rem;overscroll-behavior:contain}
.shot-lightbox[hidden],.shot-lightbox [hidden]{display:none!important}
.shot-view{width:min(1200px,100%);max-height:100%;overflow:auto;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:var(--r-m);padding:.75rem;box-shadow:var(--shadow)}
.shot-tools{display:flex;align-items:center;gap:.5rem;margin-bottom:.65rem}
.shot-tools .btn{min-width:44px;min-height:44px;justify-content:center}
.shot-tools [data-shot=close]{margin-left:auto}
.shot-view figure{margin:0}
.shot-view img{display:block;max-width:100%;max-height:calc(100dvh - 12rem);object-fit:contain;margin:auto}
.shot-view figcaption{margin-top:.65rem;overflow-wrap:anywhere}
@media(min-width:900px){.shots-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media print{.shot-lightbox{display:none!important}.shots figure{break-inside:avoid}}