@font-face{font-family:"Patrick Hand";font-weight:400;font-display:swap;src:url(fonts/patrick-hand-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible";font-weight:400;font-display:swap;src:url(fonts/atkinson-hyperlegible-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible";font-weight:700;font-display:swap;src:url(fonts/atkinson-hyperlegible-latin-700-normal.woff2) format("woff2")}
:root{
  --paper:#fdfdff; --grid:rgba(110,100,200,.30); --grid-fine:rgba(110,100,200,.13);
  --ink:#1c2a9a; --text:#232741; --margin:#e0483d; --soft:#f0f0fb;
  --hy:#fff27a; --hp:#ffb3d1; --hb:#a9dcff; --hg:#a5e88f; --ok:#1f9d55;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#161832; --grid:rgba(160,150,255,.28); --grid-fine:rgba(160,150,255,.11);
    --ink:#aebaff; --text:#e6e8fb; --margin:#ff7a6e; --soft:#1f2245;
    --hy:#6e6416; --hp:#7a2e51; --hb:#1f5677; --hg:#2f6a23; --ok:#5fd68d;
  }
}
:root[data-theme="dark"]{
  --paper:#161832; --grid:rgba(160,150,255,.28); --grid-fine:rgba(160,150,255,.11);
  --ink:#aebaff; --text:#e6e8fb; --margin:#ff7a6e; --soft:#1f2245;
  --hy:#6e6416; --hp:#7a2e51; --hb:#1f5677; --hg:#2f6a23; --ok:#5fd68d;
}
*{box-sizing:border-box}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 64px)}
body{
  margin:0; color:var(--text); font-family:"Atkinson Hyperlegible",system-ui,sans-serif; font-size:18px; line-height:1.55;
  background-color:var(--paper);
  background-image:linear-gradient(to right,var(--grid) 1px,transparent 1px),linear-gradient(to bottom,var(--grid) 1px,transparent 1px),linear-gradient(to bottom,var(--grid-fine) 1px,transparent 1px);
  background-size:32px 32px,32px 32px,8px 8px;
}
h1,h2,h3{font-family:"Patrick Hand","Comic Sans MS",cursive;font-weight:400;color:var(--ink);margin:0}
header{padding:18px 16px 6px 22px}
h1{font-size:34px;line-height:1.1}
.sub{font-size:15px;margin:4px 0 0}
nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--paper);border-bottom:2px solid var(--ink);padding:8px 10px 8px 22px;display:flex;gap:8px;overflow-x:auto}
nav button{flex:none;font:inherit;font-size:16px;padding:6px 12px;border:2px solid var(--ink);background:var(--paper);color:var(--ink);border-radius:4px;cursor:pointer}
nav button[aria-current="true"]{background:var(--ink);color:var(--paper)}
main{margin:0 0 40px 14px;padding:14px 14px 0 16px;border-left:3px solid var(--margin);max-width:760px}
h2{font-size:30px;margin:6px 0 2px}
h3{font-size:23px;margin:22px 0 6px}
.mark{padding:0 3px;background:linear-gradient(transparent 45%,var(--hy) 45%)}
.mark.p{background:linear-gradient(transparent 45%,var(--hp) 45%)}
.mark.b{background:linear-gradient(transparent 45%,var(--hb) 45%)}
.mark.g{background:linear-gradient(transparent 45%,var(--hg) 45%)}
.rule{background:var(--soft);border-left:5px solid var(--ink);padding:10px 14px;margin:10px 0;border-radius:0 4px 4px 0}
.rule p{margin:4px 0}
.ex{font-family:"Patrick Hand",cursive;font-size:21px;color:var(--ink)}
.trap{border:2px dashed var(--margin);padding:10px 14px;margin:10px 0;border-radius:4px}
.trap b{color:var(--margin)}
.trap ul,.tips ul{margin:6px 0 0;padding-left:20px}
.tips{background:var(--hy);color:#33301a;padding:10px 14px;margin:10px 0;border-radius:2px;transform:rotate(-.4deg)}
:root[data-theme="dark"] .tips,:root:not([data-theme="light"]) .tips{}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .tips{color:#fff6c2}}
table{border-collapse:collapse;width:100%;font-size:16px;margin:8px 0;background:var(--paper)}
td,th{border:1.5px solid var(--ink);padding:4px 8px;text-align:left}
th{background:var(--soft);font-weight:700}
.bar{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.btn{font:inherit;font-size:17px;padding:9px 16px;border:2px solid var(--ink);background:var(--ink);color:var(--paper);border-radius:4px;cursor:pointer}
.btn.alt{background:var(--paper);color:var(--ink)}
.btn.ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn.ko{background:var(--margin);border-color:var(--margin);color:#fff}
button:focus-visible{outline:3px solid var(--margin);outline-offset:2px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.card{position:relative;min-height:84px;padding:10px 12px;text-align:left;font:inherit;font-size:17px;color:var(--text);background:var(--paper);border:2px solid var(--ink);border-radius:3px;box-shadow:3px 3px 0 var(--ink);cursor:pointer}
.card.flip{background:var(--hy);color:#2a2712}
.card.flip .en{font-family:"Patrick Hand",cursive;font-size:22px}
.card small{display:block;margin-top:4px;font-size:14px}
.card .done{position:absolute;top:4px;right:8px;color:var(--ok);font-weight:700}
.quiz{text-align:center;padding:10px 0}
.q{font-family:"Patrick Hand",cursive;font-size:32px;color:var(--ink);margin:18px 0 6px;min-height:44px}
.a{font-size:28px;font-family:"Patrick Hand",cursive;min-height:44px;margin:6px 0}
.prog{font-size:15px}
.speak{font:inherit;font-size:15px;border:0;background:none;color:var(--ink);cursor:pointer;text-decoration:underline}
footer{margin:0 0 30px 28px;font-size:14px;max-width:700px;padding-right:14px}
footer li{margin:2px 0}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}