/* Separate reading pages; calculator layouts are unaffected. */
:root{color-scheme:light;--ink:#152b38;--accent:#076d78;--paper:#fbfaf7;--line:#ccd9dc}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.7 system-ui,-apple-system,sans-serif}a{color:var(--accent);text-underline-offset:3px}a:focus-visible{outline:3px solid #b04a14;outline-offset:4px}.skip{position:absolute;left:1rem;top:-5rem}.skip:focus{top:1rem;background:white;padding:1rem}header,main,footer{max-width:860px;margin:auto;padding:1.4rem 1.2rem}header{border-bottom:1px solid var(--line);display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between}main{padding-top:2.5rem}h1{font-size:clamp(2rem,5vw,3.3rem);line-height:1.13;letter-spacing:-.035em;margin:.5rem 0 1.4rem}h2{font-size:1.5rem;line-height:1.3;margin-top:2rem}.eyebrow,.meta{font-size:.87rem;color:#405964}.eyebrow{text-transform:uppercase;letter-spacing:.13em}.answer{font-size:1.23rem;line-height:1.65}figure{margin:2rem 0;padding:1.3rem;border:1px solid var(--line);border-radius:14px;background:#eef5f4}.flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;list-style:none;padding:0;margin:0}.flow li{background:#fff;padding:1rem;border-top:4px solid var(--accent);border-radius:7px;font-size:1rem}.flow strong{display:block;font-size:1.08rem}.flow small{display:block;font-size:.95rem;margin-top:.5rem}figcaption{font-size:.85rem;color:#405964;margin-top:1rem}.formula{padding:1rem;border-left:4px solid var(--accent);background:white;overflow-wrap:anywhere}.limits{border-top:1px solid var(--line);padding-top:.5rem}.sources li{margin:.8rem 0}.related{border-top:1px solid var(--line);padding-top:1rem}.related a{display:inline-block;padding:.4rem 0;margin-right:1rem}footer{border-top:1px solid var(--line);font-size:.9rem}p,li,a{overflow-wrap:anywhere}@media(max-width:560px){.flow{grid-template-columns:1fr}header,main,footer{padding-left:1rem;padding-right:1rem}}