@font-face{font-family:"Source Serif 4";font-weight:400;font-style:normal;font-display:swap;src:url(/assets/fonts/SourceSerif4-400.woff2) format("woff2")}
@font-face{font-family:"Source Serif 4";font-weight:400;font-style:italic;font-display:swap;src:url(/assets/fonts/SourceSerif4-400i.woff2) format("woff2")}
@font-face{font-family:"Source Serif 4";font-weight:600;font-style:normal;font-display:swap;src:url(/assets/fonts/SourceSerif4-600.woff2) format("woff2")}
@font-face{font-family:"Source Serif 4";font-weight:700;font-style:normal;font-display:swap;src:url(/assets/fonts/SourceSerif4-700.woff2) format("woff2")}
:root{--paper:#F7F3EC;--ink:#1C2430;--muted:#5E6673;--line:#E2DACB;--tint:#EFE8DB;--accent:#C4652F;--link:#9A4A1E;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.65 var(--serif);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--link);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
h1,h2,h3{font-weight:700;line-height:1.15;letter-spacing:-.015em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,6.5vw,3.4rem)}
h2{font-size:clamp(1.5rem,4vw,2.1rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:720px}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.kicker{font:600 .78rem/1.2 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--paper);padding:8px;z-index:9}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.top{border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;justify-content:space-between;gap:12px 24px;min-height:68px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.wordmark{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:600;font-size:1.3rem;letter-spacing:-.01em}
.wordmark .mark{width:22px;height:28px;color:var(--ink)}
nav{display:flex;gap:6px 22px;flex-wrap:wrap;font-family:var(--sans);font-size:.95rem}
nav a{color:var(--ink);text-decoration:none}
nav a[aria-current=page],nav a:hover{color:var(--link);text-decoration:underline}
section{padding:56px 0}
.hero{padding:64px 0 48px}
.lede{font-size:1.22rem;max-width:660px}
.ladder{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0 0;padding:0;list-style:none;font:600 .85rem/1 var(--sans)}
.ladder li{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px}
.ladder li span{color:var(--muted);font-weight:400;margin-left:6px}
.tinted{background:var(--tint)}
.brands{display:grid;gap:20px}
@media (min-width:900px){.brands{grid-template-columns:repeat(3,1fr)}}
.brand{border-radius:16px;padding:22px;border:1px solid rgba(0,0,0,.06);display:flex;flex-direction:column;gap:14px}
.brand .logo{height:52px;width:auto;max-width:100%;object-fit:contain;object-position:left}
.brand .what{font:600 .8rem/1.3 var(--sans);letter-spacing:.08em;text-transform:uppercase;opacity:.75;margin:0}
.brand .tag{font-size:1.15rem;font-weight:600;margin:0}
.brand p{margin:0}
.brand-learnbyreading .logo{height:68px;margin:-8px 0}
.covers{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:4px}
.covers img{border-radius:3px;box-shadow:0 1px 2px rgba(0,0,0,.18),0 4px 10px rgba(0,0,0,.08);aspect-ratio:5/8;object-fit:cover;width:100%}
.facts{font:500 .88rem/1.4 var(--sans);opacity:.85}
.go{margin-top:auto;display:inline-block;font:600 .95rem/1.2 var(--sans);text-decoration:none;border-radius:999px;padding:.65em 1.2em;align-self:flex-start}
.steps{display:grid;gap:18px;counter-reset:s;padding:0;list-style:none}
@media (min-width:760px){.steps{grid-template-columns:repeat(2,1fr)}}
.steps li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.steps h3{font-size:1.08rem;margin-bottom:.35em}
.note{border-left:3px solid var(--accent);padding:4px 0 4px 16px;margin:24px 0}
.foot{border-top:1px solid var(--line);padding:32px 0 48px;font:400 .9rem/1.6 var(--sans);color:var(--muted)}
.foot-in{display:flex;gap:16px 32px;flex-wrap:wrap;justify-content:space-between}
.foot a{color:var(--muted)}
.foot nav{font-size:.9rem}
.prose h2{margin-top:1.6em;font-size:1.45rem}
.prose ul{padding-left:1.2em}