.teach{--sub:var(--tone-sub);--sub-ground:var(--tone-sub-soft)}.teach .sub-strip{flex-wrap:wrap;gap:4px 16px;margin:-8px 0 20px;font-size:15px;display:flex}.teach .sub-strip a[aria-current=page]{color:var(--ink);border-bottom:1px solid var(--sub);font-weight:700;text-decoration:none}.teach .sub-go{background:var(--sub-ground);border-radius:8px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:0 0 24px;padding:16px;display:grid}.teach .sub-go a{border:1px solid var(--rule-strong);background:var(--card);color:var(--ink);border-radius:8px;padding:18px 20px;font-size:20px;font-weight:700;text-decoration:none;display:block}.teach .sub-go a span{color:var(--muted);margin-top:4px;font-size:15px;font-weight:400;display:block}.teach .sub-go a:hover{border-color:var(--sub)}.teach .sub-chips{flex-wrap:wrap;gap:8px;margin:0 0 8px;padding:0;list-style:none;display:flex}.teach .sub-chips a{text-align:center;border:1px solid var(--rule);background:var(--card);min-width:44px;color:var(--ink);border-radius:6px;padding:8px 12px;text-decoration:none;display:inline-block}.teach .sub-pick{border-left:4px solid var(--sub)}.teach .sub-tool{gap:18px;padding:clamp(14px,2.5vw,26px);display:grid}.teach .sub-form{gap:14px;display:grid}.teach .sub-row{flex-wrap:wrap;align-items:center;gap:10px 18px;display:flex}.teach .sub-row>b{min-width:110px;font-size:15px}.teach .sub-form label{align-items:center;gap:6px;min-height:40px;font-size:16px;display:inline-flex}.teach .sub-form select,.teach .sub-form input[type=time],.teach .sub-form input[type=number]{font:inherit;border:1px solid var(--rule);background:var(--card);color:var(--ink);border-radius:6px;padding:7px 9px;font-size:16px}.teach .sub-form input[type=number]{width:5em}.teach .sub-seg{border:1px solid var(--rule);border-radius:6px;flex-wrap:wrap;display:inline-flex;overflow:hidden}.teach .sub-seg button{color:var(--ink);font:inherit;cursor:pointer;background:0 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.sub-sched .fixed td{color:var(--muted)}.teach .sub-tag{border:1px solid var(--rule);color:var(--muted);border-radius:4px;margin-left:6px;padding:1px 6px;font-size:12px;display:inline-block}.teach .sub-block{border:1px solid var(--rule);background:var(--card);border-radius:8px;margin:0 0 14px;padding:14px 16px}.teach .sub-block h3{flex-wrap:wrap;align-items:baseline;gap:10px;margin:0 0 8px;font-size:18px;display:flex}.teach .sub-block h3 time{font-variant-numeric:tabular-nums;color:var(--muted);font-size:16px;font-weight:600}.teach .sub-block ol{margin:0;padding-left:22px}.teach .sub-block li{margin:0 0 6px}.teach .sub-break{background:var(--tint);border-radius:6px;margin:10px 0 0;padding:8px 12px;font-size:15px}.teach .sub-filter{margin:10px 0 0;font-size:15px}.teach .sub-never{border-left:4px solid var(--rule);margin:10px 0 0;padding:8px 12px;font-size:15px}.teach .sub-never ul{margin:4px 0 0;padding-left:20px}.teach .sub-text{font-family:var(--font-read);border-left:3px solid var(--rule);margin:10px 0 0;padding:10px 14px;font-size:18px;line-height:1.6}.teach .sub-text summary{font-family:var(--font-ui);cursor:pointer;font-size:15px}.teach .sub-big .sub-sched{font-size:32px}.teach .sub-big .sub-sched td:first-child{width:4.5em}.teach .sub-cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;display:grid}.teach .sub-card{border:1px solid var(--rule);border-top:4px solid var(--sub);background:var(--card);border-radius:8px;padding:14px 16px}.teach .sub-card h3{margin:0 0 6px;font-size:19px}.teach .sub-card p{margin:0 0 8px}.teach .sub-card small{color:var(--muted);display:block}.teach .sub-answer{max-width:760px;font-size:18px}.teach .sub-checked{color:var(--muted);font-size:14px}.teach .sub-sample{max-width:760px}.teach .sub-print{display:none}@media print{.teach .sub-screen,:is(.teach:has(.sub-print) .teach-crumbs,.teach:has(.sub-print) .teach-title,.teach:has(.sub-print) .sub-strip,.teach:has(.sub-print) .sub-screen){display:none!important}.teach .tool-canvas{border:0;min-height:0}.teach .sub-print{font:11pt/1.4 var(--font-read);color:#000;display:block}.teach .sub-page{break-after:page;page-break-after:always;padding:0}.teach .sub-page:last-child{break-after:auto;page-break-after:auto}.teach .sub-ph{font:700 13pt/1.2 var(--font-ui);border-bottom:3px solid #d95d1e;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:10px;padding-bottom:6px;display:flex}.teach .sub-ph small{font:400 9pt var(--font-ui)}.teach .sub-ph svg{width:.8in;height:.8in}.teach .sub-print h2{font:700 12pt var(--font-ui);text-transform:none;letter-spacing:0;border:0;margin:10px 0 4px}.teach .sub-print .sub-first{background:0 0;border:2px solid #d95d1e}.teach .sub-print .sub-sched{font-size:11pt}.teach .sub-print .sub-sched td:first-child{width:4.6em;font-size:16pt}.teach .sub-print .sub-block{break-inside:avoid;border:1px solid #999}.teach .sub-name{font:11pt var(--font-ui);margin:0 0 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