:root{--ink:#152d37;--muted:#526974;--paper:#f4f6f2;--accent:#086d66;--line:#d4dfd8}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:var(--paper);color:var(--ink);line-height:1.65}a{color:var(--accent)}.wrap{max-width:1120px;margin:auto;padding:0 28px}header{background:#fff;border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:22px;padding-bottom:22px}.brand{text-decoration:none;color:var(--ink);font-size:20px;font-weight:750}.brand span{color:var(--accent)}nav{display:flex;gap:24px}nav a{text-decoration:none;font-weight:600}nav a[aria-current=page]{border-bottom:2px solid var(--accent)}main{min-height:75vh}.hero{padding:76px 0 58px;max-width:850px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:700;text-transform:uppercase;color:var(--accent)}h1{font-size:clamp(38px,6vw,66px);line-height:1.08;letter-spacing:-2px;margin:18px 0 24px;font-weight:750}h2{font-size:28px;line-height:1.25}h3{font-size:20px;line-height:1.3}.lead{font-size:20px;max-width:690px;color:var(--muted)}.button{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:6px;padding:13px 22px;text-decoration:none;font-size:16px;font-family:inherit;font-weight:600;cursor:pointer;margin-top:12px}.button:hover{background:#084f4b}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #df9b16;outline-offset:5px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:24px 0 58px}.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px}.number{font-size:13px;color:var(--accent);font-weight:700}.card p{color:var(--muted)}.band{padding:32px;background:#e4eee8;border-radius:12px;margin-bottom:64px}.band h2{margin-top:0}.crumb{padding-top:26px;font-size:14px;color:var(--muted)}.article{max-width:800px;padding-bottom:60px}.article .hero{padding-top:35px;padding-bottom:20px}.article section{padding:12px 0 20px;border-bottom:1px solid var(--line)}details{margin:12px 0;background:white;padding:16px 20px;border:1px solid var(--line);border-radius:8px}summary{cursor:pointer;font-weight:600}.quiz{padding:26px;background:#e4eee8;border-radius:12px;margin-top:24px}.quiz button{margin:8px 8px 0 0;background:white;color:var(--accent);border:1px solid var(--accent);padding:10px 14px;border-radius:5px;cursor:pointer;font:inherit}.quiz button:hover{background:#d0e5da}.feedback{font-weight:600;min-height:28px}footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:14px}.footer-row{display:flex;justify-content:space-between;gap:20px}code{background:#e4eee8;padding:2px 5px;border-radius:4px}@media(max-width:700px){.nav{align-items:flex-start;flex-direction:column;gap:12px}.cards{grid-template-columns:1fr}.hero{padding:45px 0 28px}.wrap{padding-left:20px;padding-right:20px}nav{gap:18px}.footer-row{flex-direction:column;gap:4px}.lead{font-size:18px}h1{letter-spacing:-1px}}