.lesson-page{max-width:800px}.lesson-page>p,.lesson-article p{line-height:1.9}.lesson-article>section{margin:36px 0}.lesson-article h2{margin-bottom:16px}.lesson-meta{color:var(--muted);margin-bottom:28px;font-size:12px}.lesson-table-wrap{border:1px solid var(--line);border-radius:12px;margin:22px 0;overflow-x:auto}.lesson-table{border-collapse:collapse;background:var(--surface);font-variant-numeric:tabular-nums;width:100%;font-size:13px}.lesson-table caption{text-align:left;padding:14px;font-weight:700}.lesson-table th,.lesson-table td{border-top:1px solid var(--line);text-align:right;white-space:nowrap;padding:12px 14px}.lesson-table th:first-child,.lesson-table td:first-child{text-align:left}.lesson-formula{border-left:3px solid var(--primary);background:var(--tint);overflow-wrap:anywhere;padding:16px}.lesson-calculator form{gap:10px;margin:22px 0;display:grid}.lesson-calculator input{border:1px solid var(--line);background:var(--surface);width:100%;color:var(--ink);border-radius:8px;padding:12px}.lesson-calculator dl>div{border-bottom:1px solid var(--line);padding:12px 0}.lesson-calculator dd{margin:4px 0 0;font-size:20px;font-weight:700}.lesson-links{flex-wrap:wrap;gap:12px 24px;display:flex}.lesson-page a:hover{text-decoration:underline}@media (max-width:600px){.lesson-table th,.lesson-table td{padding:10px}.lesson-article>section{margin:28px 0}.lesson-calculator{padding:18px}}