.reading{max-width:760px;margin:auto;padding:45px 0 70px}
.reading h1{font-size:clamp(34px,5vw,52px)}
.reading h2{font-size:28px;margin-top:38px}
.reading p{color:var(--muted)}
.example{border:1px solid var(--line);background:white;padding:25px;border-radius:8px;margin:30px 0}
.arithmetic{font-family:Georgia,serif;font-size:clamp(24px,5vw,38px);color:var(--ink)!important}
.reading li{margin:12px 0}
.reading .small{font-size:12px}
.back{font-size:13px}
.reading a{text-underline-offset:4px}
.reading table{width:100%;border-collapse:collapse;margin:22px 0}
.reading th,.reading td{text-align:left;padding:12px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.reading th:first-child,.reading td:first-child{padding-left:0}
.reading th:last-child,.reading td:last-child{padding-right:0}
.related{border-top:1px solid var(--line);margin-top:40px;padding-top:20px}