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.cta{margin:28px 0;padding:20px;border-radius:16px;border:1px solid #bcd5f4;background:#f5f9ff;display:flex;gap:15px;align-items:center;flex-wrap:wrap}.cta div{flex:1}.cta strong{display:block;font-size:17px}.cta span{color:var(--muted);font-size:14px}.cta.dark{background:var(--ink);color:white;border:0}.cta.dark span{color:#c7d4e4}
.sidebar{align-self:start}.stickycard{position:sticky;top:86px;padding:24px;border:1px solid var(--line);border-radius:18px;box-shadow:0 14px 40px #0a254017;background:white}.stickycard .button{width:100%;margin:8px 0}.stickycard small{display:block;color:var(--muted);font-size:11px}.stickycard ul{padding-left:18px;color:var(--muted);font-size:14px}.mini{color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.related{display:grid;grid-template-columns:1fr 1fr;gap:12px}.related a{padding:16px;border:1px solid var(--line);border-radius:13px;text-decoration:none;color:var(--ink);font-weight:800}.related small{display:block;color:var(--blue);margin-top:7px}.worksheet{padding-left:22px}.worksheet li{padding:7px 0;border-bottom:1px solid var(--line)}details{border-top:1px solid var(--line);padding:14px 0}summary{font-weight:850;cursor:pointer}
footer{background:var(--ink);color:#dbe7f4;padding:46px max(22px,calc((100vw - 1240px)/2));font-size:14px}footer a{color:white}.footlinks{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px}
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