:root{--ink:#273f37;--green:#245c48;--muted:#67756d;--paper:#f7f6ef;--line:#dce2d7;--accent:#dfb55b}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 system-ui,-apple-system,sans-serif}header,main,footer{max-width:1120px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}nav{display:flex;gap:20px;flex-wrap:wrap}a{color:var(--green)}button,input,select,textarea{font:inherit}button{cursor:pointer;border:1px solid var(--green);background:var(--green);color:white;border-radius:10px;padding:10px 16px}button:disabled{opacity:.5;cursor:wait}.quiet{color:var(--green);background:transparent;border-color:var(--line);padding:6px 12px}.hero{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;padding:36px 0}.eyebrow{font-size:13px;color:var(--green);font-weight:700;letter-spacing:1px}h1{font-size:clamp(32px,5vw,52px);line-height:1.3;margin:12px 0}h1 span{font-size:44px;margin-left:16px}.hero p{color:var(--muted)}aside{background:#e8ecdf;padding:28px;border-radius:20px;align-self:center}aside strong{font-size:26px}.hint{font-size:13px;color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,1fr);background:white;border:1px solid var(--line);border-radius:14px}.stats div{padding:18px 24px}.stats div+div{border-left:1px solid var(--line)}.stats strong{display:block;font-size:28px}.stats span{font-size:13px;color:var(--muted)}.toolbar{margin-top:34px}h2{font-size:24px;line-height:1.5}.filters{display:flex;flex-wrap:wrap;gap:14px}label{font-weight:600;font-size:14px}.filters label{display:flex;flex-direction:column;gap:5px;flex:1;min-width:150px}.filters .search{flex:2}input[type=search],select{width:100%;border:1px solid var(--line);background:white;border-radius:9px;padding:10px;color:var(--ink)}.utilities{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:18px 0}.utilities span{margin-right:auto;font-size:14px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:white;border:1px solid var(--line);padding:21px;border-radius:14px;display:flex;flex-direction:column;align-items:flex-start;gap:10px}.card h3{font-size:19px;margin:0}.card p{font-size:14px;color:var(--muted);margin:0;flex:1}.card small{color:var(--muted);font-size:12px}.card .tag{font-size:12px;color:var(--green);background:#eff3e9;padding:3px 8px;border-radius:7px}.card button{align-self:stretch;margin-top:10px}.empty{grid-column:1/-1;padding:35px;text-align:center}.written{box-shadow:inset 0 3px 0 #80a28e}.marked{box-shadow:inset 0 3px 0 var(--accent)}footer{font-size:13px;color:var(--muted);margin-top:40px;border-top:1px solid var(--line)}#notice{color:#8b522b;font-size:14px}dialog{width:min(850px,95vw);max-height:92vh;border:1px solid var(--line);border-radius:16px;padding:28px;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#19352cc0}.dialog-head{display:flex;justify-content:space-between;gap:15px;align-items:center;font-size:13px;color:var(--muted)}.prompt{white-space:pre-wrap;background:white;padding:22px;border-radius:12px;border:1px solid var(--line);margin-bottom:22px}.answer-label,.save-row{display:flex;justify-content:space-between;gap:12px;align-items:center;margin:10px 0;font-size:13px}textarea{width:100%;min-height:270px;padding:18px;border-radius:10px;border:1px solid var(--line);line-height:1.85;color:var(--ink);resize:vertical}details{border:1px solid var(--line);padding:16px;border-radius:10px;margin:22px 0;background:white}summary{cursor:pointer;font-weight:700;color:var(--green)}#solution h3{font-size:19px;margin:24px 0 10px}#solution p{white-space:pre-wrap;overflow-wrap:anywhere}#solution a{overflow-wrap:anywhere}#solution ul{padding-left:24px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{padding:10px;border:1px solid var(--line);vertical-align:top;text-align:left}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:3px}@media(max-width:760px){header,main,footer{padding:18px}.hero{grid-template-columns:1fr;gap:18px;padding:22px 0}.cards{grid-template-columns:1fr}.stats div{padding:14px}.filters label{min-width:calc(50% - 14px)}dialog{padding:18px}.save-row{align-items:flex-start;flex-direction:column}nav{gap:12px;font-size:13px}header{align-items:center}aside{padding:22px}}