:root{--bg:#fdf6e3;--card:#fffdf5;--tx:#1d2b1f;--ink:#1d2b1f;--sh:#1d2b1f;--o:#d93a1b;--ot:#fff;--y:#ffcf33;--gr:#2e9e5b;--cd:#b3260e;--f:#1b5fd6;--r:14px;color-scheme:light dark}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#14201a;--card:#1f3028;--tx:#f4efe0;--ink:#f4efe0;--sh:#000;--o:#ff7a59;--ot:#14201a;--cd:#ff9b80;--f:#8ab4ff}}
:root[data-theme=dark]{--bg:#14201a;--card:#1f3028;--tx:#f4efe0;--ink:#f4efe0;--sh:#000;--o:#ff7a59;--ot:#14201a;--cd:#ff9b80;--f:#8ab4ff}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--tx);font:clamp(1rem,.95rem + .3vw,1.18rem)/1.65 "Segoe UI",system-ui,sans-serif}
h1,h2,h3{font-family:ui-serif,Georgia,"Times New Roman",serif}
.skip{position:absolute;left:-999px}
.skip:focus{left:8px;top:8px;z-index:9;background:var(--y);color:#1d2b1f;padding:.6rem 1rem;border:3px solid #1d2b1f;border-radius:10px}
header{display:flex;flex-wrap:wrap;gap:.8rem 2rem;justify-content:space-between;align-items:center;padding:1rem clamp(1rem,4vw,2rem);background:var(--y);color:#1d2b1f;border-bottom:4px solid #1d2b1f}
h1{margin:0;font-size:clamp(1.7rem,5vw,2.6rem);line-height:1.1}
header p{margin:.2rem 0}
.hp{display:grid;gap:.4rem;min-width:min(100%,16rem)}
.bt{font-weight:800}
progress{width:100%;height:1.1rem;accent-color:#2e7d32}
.app{display:grid;grid-template-columns:minmax(0,1fr);max-width:80rem;margin:0 auto}
aside{min-width:0}
@media(min-width:56rem){.app{grid-template-columns:19rem minmax(0,1fr)}aside{position:sticky;top:0;align-self:start;max-height:100vh;overflow:auto}#nav{flex-direction:column;overflow:visible}#nav button{white-space:normal;overflow-wrap:anywhere;line-height:1.3;padding:.55rem .9rem}}
aside{padding:.8rem clamp(1rem,3vw,1.2rem)}
#nav{display:flex;gap:.5rem;list-style:none;margin:0;padding:.2rem .2rem .6rem;overflow-x:auto}
#nav button{width:100%;min-height:44px;text-align:left;white-space:nowrap;padding:.4rem .9rem;font:inherit;color:var(--tx);background:var(--card);border:3px solid var(--ink);border-radius:var(--r);box-shadow:3px 3px 0 var(--sh);cursor:pointer}
#nav button[aria-current=page]{background:var(--o);color:var(--ot);font-weight:800}
main{padding:1rem clamp(1rem,4vw,2rem) 2rem;min-width:0}
h2{font-size:clamp(1.5rem,4.5vw,2.3rem);line-height:1.2;margin:.3rem 0 1rem}
h3{font-size:1.4rem;margin:2.2rem 0 .3rem}
h4{margin:1rem 0 .3rem}
.sub{margin:0 0 .8rem}
.story{background:var(--card);border:3px dashed var(--ink);border-radius:var(--r);padding:1rem 1.3rem;max-width:70ch}
.story strong{background:var(--y);color:#1d2b1f;padding:0 .4rem;border-radius:6px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,14rem),1fr));gap:1rem}
.card,.opt,.btn{font:inherit;color:var(--tx);cursor:pointer;border:3px solid var(--ink);border-radius:var(--r);box-shadow:4px 4px 0 var(--sh);transition:transform .1s,box-shadow .1s}
.card:hover,.opt:hover:not(:disabled),.btn:hover{transform:translate(-1px,-1px)}
.card:active,.opt:active,.btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--sh)}
.card{min-height:7.5rem;display:grid;place-items:center;text-align:center;padding:1rem;background:var(--card)}
.card[aria-pressed=true]{background:var(--y);color:#1d2b1f}
code{font-family:ui-monospace,Consolas,monospace;color:var(--cd);font-size:1.05em;font-weight:700;overflow-wrap:anywhere}
.match{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,17rem),1fr));gap:0 1.2rem}
.opt{display:block;width:100%;min-height:44px;margin:.5rem 0;text-align:left;background:var(--card);padding:.55rem 1rem;box-shadow:3px 3px 0 var(--sh)}
.opt[aria-pressed=true]{background:var(--y);color:#1d2b1f}
.opt.ok{background:var(--gr);color:#fff;border-color:var(--ink)}
.opt.ok::after{content:" ✅"}
.opt:disabled{cursor:default;box-shadow:none}
.msg{min-height:1.7em;margin:.3rem 0;font-weight:800}
.qz{border:3px solid var(--ink);border-radius:var(--r);margin:0 0 1rem;padding:.6rem 1rem;background:var(--card)}
legend{font-weight:800;padding:0 .5rem;background:var(--y);color:#1d2b1f;border-radius:6px}
.ord{padding-left:1.4rem}
.term{background:#0f1a14;color:#d6f5de;border:3px solid var(--ink);border-radius:var(--r);box-shadow:4px 4px 0 var(--sh);padding:1rem;font-family:ui-monospace,Consolas,monospace}
.term label{display:block;color:#c8d6cc}
.mis{margin:0 0 .5rem;color:#ffcf33;font-weight:700}
.log{min-height:4rem;max-height:14rem;overflow:auto;margin:.5rem 0}
.log div{white-space:pre-wrap;overflow-wrap:anywhere}
.log .ok{color:#6ee79b}.log .bad{color:#ffa08a}.log .hint{color:#ffcf33}
.row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
.ps{color:#6ee79b;font-weight:800}
.row input{flex:1 1 10rem;min-width:0;min-height:44px;padding:.4rem .7rem;font:inherit;color:#fff;background:#1c2d23;border:2px solid #6ee79b;border-radius:10px}
.btn{min-height:44px;padding:.5rem 1.2rem;background:var(--o);color:var(--ot);font-weight:800}
.btn.alt{background:var(--card);color:var(--tx)}
.btn:disabled{opacity:.5;cursor:default;box-shadow:none}
.pn{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;margin:2rem 0}
footer{padding:1rem 1rem 5rem;text-align:center}
#toast{position:fixed;left:50%;bottom:1rem;max-width:90vw;transform:translate(-50%,200%);background:var(--y);color:#1d2b1f;border:3px solid #1d2b1f;border-radius:var(--r);box-shadow:4px 4px 0 #1d2b1f;padding:.6rem 1.2rem;font-weight:800;transition:transform .3s}
#toast.show{transform:translate(-50%,0)}
:focus-visible{outline:4px solid var(--f);outline-offset:3px}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.goals{list-style:none;padding:0}.goals li{margin:.35rem 0}
@media(min-width:56rem){#nav{flex-direction:column;overflow:visible}#nav li{min-width:0}#nav button{white-space:normal;overflow-wrap:anywhere;line-height:1.3;padding:.55rem .9rem}aside{overflow-x:hidden}}