/* aileelab learn — 공용 스타일. 분야 폴더 안에서만 쓴다 */
:root{
  --bg:#FBFAF7; --fg:#1B2233; --muted:#5B6476; --line:#E3E0D8; --panel:#FFFFFF;
  --accent:#14213D; --hi:#C94F0A; --s1:#0072B2; --s2:#D55E00; --s3:#009E73;
  --fs:18px; --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#11161F; --fg:#E8E6E0; --muted:#9AA3B2; --line:#2A3241; --panel:#171D28;
  --accent:#F6F4EF; --hi:#F2884B; --s1:#56B4E9; --s2:#E69F00; --s3:#4CC3A0;}}
:root[data-theme="dark"]{
  --bg:#11161F; --fg:#E8E6E0; --muted:#9AA3B2; --line:#2A3241; --panel:#171D28;
  --accent:#F6F4EF; --hi:#F2884B; --s1:#56B4E9; --s2:#E69F00; --s3:#4CC3A0;}
:root[data-big="1"]{--fs:24px}
*{box-sizing:border-box}
html{font-size:var(--fs)}
body{margin:0;background:var(--bg);color:var(--fg);font:1rem/1.7 "Pretendard","Noto Sans KR",system-ui,sans-serif}
a{color:inherit}
p,li,td{overflow-wrap:anywhere}
.katex-display{overflow-x:auto;overflow-y:hidden;padding:4px 0}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
.wide{max-width:1100px;margin:0 auto;padding:0 16px}
header.top{padding:28px 0 8px}
header.top .field{font-size:.8rem;color:var(--muted);text-decoration:none}
header.top h1{margin:.2rem 0 0;font-size:2rem;line-height:1.2;letter-spacing:-.01em}
header.top .sub{color:var(--muted);font-size:.9rem}
.tools{display:flex;gap:6px;justify-content:flex-end;padding-top:12px}
.tools button{font:inherit;font-size:.75rem;padding:4px 10px;border:1px solid var(--line);background:var(--panel);color:var(--fg);border-radius:6px;cursor:pointer}
nav.tabs{position:sticky;top:0;z-index:5;background:var(--bg);border-bottom:1px solid var(--line);overflow-x:auto;white-space:nowrap;scrollbar-width:thin}
nav.tabs a{display:inline-block;padding:12px 14px;text-decoration:none;color:var(--muted);font-size:.9rem;border-bottom:3px solid transparent}
nav.tabs a[aria-selected="true"]{color:var(--fg);font-weight:700;border-bottom-color:var(--hi)}
section.tab{display:none;padding:8px 0 40px}
section.tab.on{display:block}
h2{font-size:1.4rem;margin:2rem 0 .4rem}
h3{font-size:1.1rem;margin:1.8rem 0 .3rem}
h2 small,h3 small{font-weight:400;color:var(--muted);font-size:.7em;margin-left:.4em}
.anchor{opacity:0;margin-left:.3em;text-decoration:none;color:var(--muted);font-size:.8em;cursor:pointer}
h2:hover .anchor,h3:hover .anchor,.anchor:focus{opacity:1}
.hands{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px;margin:12px 0}
.hands .ctl{display:grid;grid-template-columns:auto 1fr auto;gap:6px 12px;align-items:center;font-size:.85rem}
.hands input[type=range]{width:100%}
.hands .val{font-family:var(--mono);min-width:6ch;text-align:right}
.hands .row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.hands .row button{font:inherit;font-size:.75rem;padding:4px 10px;border:1px solid var(--line);background:transparent;color:var(--fg);border-radius:6px;cursor:pointer}
.hands canvas{width:100%;height:260px;display:block;margin-top:10px}
.readout{font-family:var(--mono);font-size:.85rem;margin-top:8px;color:var(--muted)}
.note{font-size:.8rem;color:var(--muted)}
table.notation{border-collapse:collapse;width:100%;font-size:.85rem}
table.notation td,table.notation th{border-bottom:1px solid var(--line);padding:6px 8px;text-align:left}
ol.refs{font-size:.85rem;padding-left:1.2em}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin:20px 0 40px}
.card{display:block;padding:16px;border:1px solid var(--line);border-radius:10px;background:var(--panel);text-decoration:none}
.card b{display:block;font-size:1.05rem}
.card span{font-size:.8rem;color:var(--muted)}
.disclaimer{font-size:.75rem;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:24px}
footer.brand{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:24px 16px 32px;font-size:12px;opacity:.85;max-width:1100px;margin:0 auto}
footer.brand img{height:20px;display:block}
footer.brand .wm-dark{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) footer.brand .wm-light{display:none}:root:not([data-theme="light"]) footer.brand .wm-dark{display:block}}
:root[data-theme="dark"] footer.brand .wm-light{display:none}
:root[data-theme="dark"] footer.brand .wm-dark{display:block}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:6px 12px;border-radius:6px;font-size:.8rem;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.on{opacity:1}
@media print{
  nav.tabs,.tools,.hands .row,.anchor{display:none!important}
  section.tab{display:block!important;page-break-before:always}
  section.tab:first-of-type{page-break-before:auto}
  body{background:#fff;color:#000}
}
.wide>h2{max-width:728px;margin:2rem auto .4rem}
html[lang="en"] h2 small,html[lang="en"] h3 small{display:none}
/* opt additions, based on the supplied Learn template */
:root{--bg:#f7f8fa;--panel:#fff;--line:#dbe1e8;--hi:#b34813;--s1:#0072b2;--s2:#c65b12;--s3:#00856c}
body{letter-spacing:-.015em}h1{font-weight:750}header.top{padding:36px 0 24px}header.top .sub{margin-top:14px;line-height:1.65}.eyebrow{font:600 .65rem/1.5 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--hi);margin-bottom:12px}.tools{flex-wrap:wrap}.tools button{min-height:36px;border-radius:5px}.wrap{padding-left:20px;padding-right:20px}.wide{padding-left:20px;padding-right:20px}.cards{grid-template-columns:1fr 1fr;gap:16px}.card{position:relative;min-height:180px;border-radius:6px;padding:24px;transition:transform .15s,border-color .15s}.card:hover{border-color:var(--hi);transform:translateY(-2px)}.card .num{color:var(--hi);font:500 .7rem var(--mono);display:block;margin-bottom:18px}.card b{font-size:1.12rem}.card .count{display:block;margin-top:20px;font:.7rem var(--mono)}.card .arrow{position:absolute;top:22px;right:22px;font-size:22px;color:var(--muted)}.tabs>.wide{display:flex;width:max-content;min-width:min(100%,1100px)}.tabs a{font-size:.78rem;padding:14px 16px}.hands{padding:24px;border-radius:6px;margin-top:20px}.ctl{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:16px!important}.control{display:grid;grid-template-columns:1fr auto;align-items:center;gap:3px 8px;min-width:0}.control label{font-size:.78rem;color:var(--muted)}.control input[type=range]{grid-column:1/-1;accent-color:var(--s1);min-height:24px}.control select,.control input[type=text],.control input[type=number]{width:100%;max-width:100%;grid-column:1/-1;border:1px solid var(--line);padding:9px;color:var(--fg);background:var(--bg);font:inherit;font-size:.8rem;border-radius:4px}.control .val{font-size:.75rem}.demo-head{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-bottom:20px}.badge{font:.65rem var(--mono);color:var(--s1);border:1px solid var(--line);padding:3px 7px}.demo-head p{margin:0;font-size:.8rem}.viz{margin:24px 0 14px}.viz svg{display:block;width:100%;height:auto;overflow:visible}.viz .plot{height:320px}.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.triple{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.viz figure{margin:0;min-width:0}.viz figcaption{font-size:.75rem;margin-bottom:8px;color:var(--muted)}.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:14px 0}.metric{padding:14px;border:1px solid var(--line);border-radius:4px;background:var(--bg)}.metric b{display:block;font:600 1.2rem var(--mono)}.metric span{font-size:.7rem;color:var(--muted)}.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:.72rem;color:var(--muted);margin:8px 0}.legend i{display:inline-block;width:16px;margin-right:6px;border-top:3px solid var(--s1);vertical-align:middle}.legend .second{border-color:var(--s2);border-top-style:dashed}.legend .third{border-color:var(--s3);border-top-style:dotted}.row button,button.action{cursor:pointer;min-height:40px!important;padding:8px 12px!important}button.action{background:var(--fg)!important;color:var(--bg)!important;border:0;border-radius:5px;font:inherit;font-size:.8rem}.row{align-items:center}.status{font-size:.7rem;color:var(--muted);min-height:1.8em}.status.error{color:var(--s2)}.table-scroll{width:100%;overflow:auto;max-height:520px}.table-scroll table{min-width:560px;border-collapse:collapse;width:100%;font-size:.7rem}.table-scroll th,.table-scroll td{padding:6px 9px;border-bottom:1px solid var(--line);text-align:left}.table-scroll th{position:sticky;top:0;background:var(--panel)}.task-input{width:60px;background:var(--bg);color:var(--fg);border:1px solid var(--line);padding:5px}.mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.mini-grid button{padding:10px;background:var(--bg);border:1px solid var(--line);color:var(--fg);border-radius:4px;cursor:pointer}.mini-grid svg{height:80px}.mini-grid span{font:.65rem var(--mono)}.explain{border-left:3px solid var(--s1);padding:2px 16px;margin:22px 0;font-size:.9rem}.concept-svg{width:100%;height:auto;margin:20px 0;color:var(--fg)}.anchor{border:0;background:none;opacity:.65;font:inherit;font-size:.7em}.anchor:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--s1);outline-offset:3px}.note{line-height:1.65}.version{font:.7rem var(--mono);color:var(--muted)}.section-title{scroll-margin-top:80px}.link-group{display:flex;gap:16px;flex-wrap:wrap;font-size:.8rem}.printing-label{display:none} .svg-label{fill:var(--fg)} .chart-empty{padding:40px;text-align:center;border:1px dashed var(--line);font-size:.8rem;color:var(--muted)}
@media(max-width:650px){.cards{grid-template-columns:1fr}.card{min-height:150px}.hands{padding:14px}.ctl{grid-template-columns:1fr!important}.split,.triple{grid-template-columns:1fr}.mini-grid{grid-template-columns:1fr 1fr}header.top h1{font-size:1.65rem}.wide,.wrap{padding-left:14px;padding-right:14px}.metrics{grid-template-columns:1fr 1fr}.metric{padding:10px}.metric b{font-size:1rem}.tabs a{padding:12px 10px;font-size:.76rem} .tools button{padding:4px 8px}.viz .plot{height:300px}}
@media print{html{font-size:14px!important}body{--bg:#fff;--fg:#111;--muted:#444;--panel:#fff;--line:#ccc;color:#111!important;print-color-adjust:exact;-webkit-print-color-adjust:exact}section.tab{display:block!important;break-before:page}.printing-label{display:block}.hands{break-inside:avoid;padding:12px}.ctl,.row,.status,.tools,.tabs{display:none!important}.table-scroll{max-height:none;overflow:visible}.mini-grid{grid-template-columns:repeat(4,1fr)}.split{grid-template-columns:1fr 1fr}.triple{grid-template-columns:repeat(3,1fr)}.viz .plot{height:260px}.wm-dark{display:none!important}.wm-light{display:block!important}.brand{break-inside:avoid}h2{break-after:avoid} .card{break-inside:avoid}}
.network-scroll{width:100%;overflow:auto;margin-bottom:18px}.network-scroll svg{min-width:760px}.formula{overflow:auto}input[type=range]{touch-action:pan-y}.tab.print-open{--print-ready:1}@media print{.network-scroll{overflow:visible}.network-scroll svg{min-width:0}.concept-svg{max-height:95px}}