.lrn-diff{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;color:var(--mute)}.lrn-diff .dot{width:8px;height:8px;border-radius:50%;display:inline-block}.lrn-diff[data-diff=beginner] .dot{background:var(--ok)}.lrn-diff[data-diff=intermediate] .dot{background:var(--warn)}.lrn-diff[data-diff=advanced] .dot{background:var(--slow)}.lrn-diff[data-diff=infrastructure] .dot{background:#14161a}.lrn-map{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;margin:20px 0}.lrn-cat-card{background:var(--sheet);border:1.5px solid var(--line);border-radius:14px;padding:18px;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:8px;transition:transform .2s,box-shadow .2s}.lrn-cat-card:hover{transform:translateY(-2px);box-shadow:0 6px 18px #00000014}.lrn-cat-card h2{font-family:var(--display);font-weight:700;font-size:16px;letter-spacing:-.2px;margin:0}.lrn-cat-card p{font-size:12px;color:var(--mute);line-height:1.5;margin:0;flex:1}.lrn-cat-count{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--clay)}.lrn-search{width:100%;box-sizing:border-box;font:14px/1.4 var(--body);padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;background:var(--sheet);color:var(--ink);margin-bottom:14px}.lrn-search:focus{outline:2px solid var(--clay);outline-offset:1px}.lrn-filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.lrn-chip{font:11px/1 var(--body);font-weight:700;padding:7px 12px;border-radius:999px;border:1.5px solid var(--line);background:var(--sheet);color:var(--mute);cursor:pointer}.lrn-chip[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--sheet)}.lrn-empty{font-size:13px;color:var(--mute);padding:24px 0;text-align:center}.lrn-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}.lrn-card{background:var(--sheet);border:1.5px solid var(--line);border-radius:12px;padding:14px 16px;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:6px}.lrn-card:hover{border-color:var(--clay)}.lrn-card-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.lrn-card h3{font-family:var(--display);font-weight:700;font-size:14px;letter-spacing:-.2px;margin:0}.lrn-card .lrn-acronym{font-size:11px;color:var(--mute);font-weight:600}.lrn-card p{font-size:12px;line-height:1.5;color:var(--mute);margin:0}.lrn-card-cat{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--clay)}.lrn-card[hidden]{display:none}.lrn-term-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:6px}.lrn-term-head h1{margin:0}.lrn-fullname{font-size:13px;color:var(--mute)}.lrn-cat-tag{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--clay);text-decoration:none}.lrn-section{max-width:640px;margin:22px 0}.lrn-section h2{font-family:var(--display);font-weight:700;font-size:14px;letter-spacing:-.1px;margin:0 0 8px;text-transform:uppercase;letter-spacing:.03em;color:var(--mute)}.lrn-section p{font-size:14px;line-height:1.65;margin:0}.lrn-flow{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:12px;font-weight:600;font-family:var(--display)}.lrn-flow span{background:var(--bg);border:1.5px solid var(--line);border-radius:8px;padding:6px 10px}.lrn-flow .arrow{color:var(--mute);font-weight:400;padding:0}.lrn-pill-row{display:flex;flex-wrap:wrap;gap:8px}.lrn-pill{font:12px/1 var(--body);font-weight:700;padding:8px 12px;border-radius:999px;border:1.5px solid var(--line);background:var(--sheet);color:var(--ink);text-decoration:none}.lrn-pill:hover{border-color:var(--clay);color:var(--clay)}.lrn-hfai{background:#fff7f3;border:1.5px solid var(--clay);border-radius:12px;padding:14px 16px}.lrn-hfai p{font-size:13px}@media(max-width:640px){.lrn-map,.lrn-list{grid-template-columns:1fr}}