:root{color-scheme:light;--ink:#162f40;--muted:#526775;--accent:#116b69;--border:#d4e1e5;--bg:#f3f7f8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,sans-serif}header{background:#152b3a;color:white;display:flex;gap:20px;justify-content:space-between;padding:18px max(20px,calc((100vw - 1120px)/2))}header a{color:#c7f5e9}header span{font-size:.9rem}main{max-width:1120px;margin:32px auto;padding:0 20px}h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;margin:8px 0}h2{margin-top:26px}h3{line-height:1.3}.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.12em;font-weight:700;font-size:.8rem}.lead{font-size:1.1rem;color:var(--muted)}nav{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0;border-bottom:1px solid var(--border);padding-bottom:16px}button,.import{cursor:pointer;border:1px solid var(--accent);border-radius:10px;background:var(--accent);color:white;padding:10px 16px;font:inherit;min-height:44px}nav button{background:white;color:var(--ink);border-color:var(--border)}nav button[aria-selected=true]{background:var(--accent);color:white}button.secondary{background:white;color:var(--ink);border-color:var(--border)}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #d78d16;outline-offset:3px}a{color:#095d71;text-underline-offset:3px}label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.9rem}input,select{font:inherit;padding:11px;border:1px solid #a4b8c0;border-radius:8px;background:white;color:var(--ink);min-width:0;max-width:100%}.filters{display:grid;grid-template-columns:2fr 1fr 1fr;gap:16px;margin:24px 0}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,310px),1fr));gap:16px}.card{border:1px solid var(--border);border-radius:16px;background:white;padding:22px;overflow-wrap:anywhere}.card h3{margin:8px 0}.card p{margin:12px 0}.badge{font-size:.75rem;font-weight:700;letter-spacing:.03em;color:var(--accent)}.note,small{color:var(--muted)}.note{padding:14px 18px;border-left:3px solid var(--accent);background:#e6f0f1}.card details{border-top:1px solid var(--border);padding-top:10px;margin-top:14px}.card summary{cursor:pointer;font-weight:600}.answer{background:#eaf3ef;border-radius:8px;padding:12px}.practice-controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.practice-controls input{width:110px}footer{padding:28px 20px;text-align:center;color:var(--muted);font-size:.85rem}.import{display:inline-flex;margin:8px 12px 18px 0}.import input{background:transparent;color:white;border:0;padding:0;font-size:.8rem;width:260px}#sourceSearch{margin-bottom:20px}[hidden]{display:none!important}@media(max-width:600px){header{flex-direction:column;gap:2px}.filters{grid-template-columns:1fr}nav button{flex:1 1 42%;font-size:.9rem}main{margin:24px auto}.card{padding:18px}}