.sizing-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.source-original{font-size:14px;color:var(--gold);text-decoration:none;white-space:nowrap}.source-original span{margin-left:8px}.reference-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid var(--line);border-radius:14px;padding:15px 20px;background:var(--surface)}.reference-toolbar p{font-size:14px;color:var(--muted)}.reference-toolbar strong{color:var(--text);font-weight:500}.reference-toolbar .secondary-button{margin:0;width:auto;white-space:nowrap}.sizing-anchors{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.sizing-anchors a{font-size:14px;text-decoration:none;padding:7px 14px;border:1px solid var(--line);border-radius:30px;color:var(--muted)}.sizing-anchors a:hover{color:var(--text);background:var(--surface-high)}.sizing-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-bottom:20px;scroll-margin-top:20px}.rule-heading{display:flex;align-items:center;gap:15px}.rule-number{color:var(--gold);font-size:16px;width:42px;height:42px;display:grid;place-items:center;border:1px solid #e4cc9538;border-radius:12px;background:#e4cc9506}.rule-heading h2{font-size:23px;margin-top:2px;letter-spacing:-.4px}.rule-heading .small-caps{font-size:11px}.rule-description{font-size:15px;color:var(--muted);margin:18px 0 22px;max-width:600px}.rule-table-wrap{width:100%;overflow:auto}.sizing-card table{width:100%;border-collapse:collapse;font-size:14px;text-align:left}.sizing-card th{font-size:11px;letter-spacing:.6px;text-transform:uppercase;color:var(--faint);font-weight:500;padding:0 12px 12px;border-bottom:1px solid var(--line)}.sizing-card td{padding:11px 12px;border-bottom:1px solid var(--line)}.sizing-card tr:last-child td{border-bottom:0}.sizing-card td:last-child{font-weight:600;color:var(--green)}.reveal-size{background:none;color:inherit;text-align:left;padding:5px 0;min-height:30px}.reveal-size.is-concealed{background:var(--surface-high);padding:5px 9px;border-radius:5px;font-size:13px;color:var(--gold);font-weight:400}.rule-example{margin-top:20px;padding:13px 15px;border-left:2px solid var(--gold);background:#e4cc9506;font-size:14px;color:#e1d6ba}.rule-note{font-size:13px;line-height:1.7;color:var(--faint);margin-top:18px}.calculator{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:var(--surface);position:sticky;top:24px}.calculator h2{font-size:22px;letter-spacing:-.5px}.calculator-intro{color:var(--muted);font-size:14px;margin:10px 0 22px}.calculator label{display:flex;flex-direction:column;font-size:13px;color:var(--muted);gap:7px;margin-bottom:16px}.calculator select,.calculator input{display:block;width:100%;height:42px;border:1px solid var(--line-strong);background:var(--surface-low);color:var(--text);border-radius:8px;font:inherit;font-size:15px;padding:0 11px}.calculator :is(select,input):focus-visible{outline:2px solid var(--gold);outline-offset:2px}.calculation-result{margin-top:24px;padding:20px;border-radius:12px;background:var(--surface-low);border:1px solid #a6d4b330}.calculation-result>span{color:var(--muted);font-size:12px}.calculation-result strong{display:block;margin:3px 0 8px;font-size:34px;color:var(--green);letter-spacing:-1px}.calculation-result p{font-size:13px;line-height:1.6;color:var(--muted)}.calculation-result.is-undefined{border-color:#e9a18a55}.calculation-result.is-undefined strong{color:var(--danger)}.calculator-footnote{margin:18px 0;font-size:12px;line-height:1.7;color:var(--faint)}.calculator-link{display:flex;justify-content:space-between;font-size:14px;color:var(--gold);text-decoration:none;padding-top:15px;border-top:1px solid var(--line)}.learning-note{display:flex;gap:16px;border:1px solid var(--line);padding:24px;border-radius:16px;margin:16px 0 12px;max-width:calc(100% - 324px)}.learning-note>span{color:var(--gold);font-size:24px}.learning-note h2{font-size:15px;margin-bottom:6px}.learning-note p{font-size:14px;line-height:1.7;color:var(--muted)}.learning-note a{color:var(--green)}
@media(max-width:1000px){.sizing-layout{grid-template-columns:minmax(0,1fr) 270px;gap:18px}.calculator{padding:20px}.sizing-card{padding:22px}.learning-note{max-width:calc(100% - 288px)}.reference-toolbar{align-items:flex-start;flex-direction:column;gap:10px}}
@media(max-width:800px){.sizing-layout{grid-template-columns:1fr}.calculator{position:static}.learning-note{max-width:none}.source-original{margin-top:16px}.page-intro{display:block}.reference-toolbar{flex-direction:row;align-items:center}.sizing-card{padding:20px}.calculator form{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.calculation-result{margin-top:8px}.source-original{display:inline-block}.calculator-footnote{font-size:13px}}
@media(max-width:480px){.reference-toolbar{padding:14px;align-items:flex-start;flex-direction:column}.sizing-card{padding:18px 14px}.rule-heading h2{font-size:21px}.rule-description{font-size:14px}.sizing-card :is(td,th){padding-left:6px;padding-right:6px}.sizing-card td{font-size:13px}.sizing-card th{font-size:10px}.sizing-anchors{gap:5px}.sizing-anchors a{font-size:12px;padding:7px 10px}.rule-note{font-size:12px}.rule-example{font-size:13px}.calculator form{display:block}.learning-note{padding:18px}.learning-note p{font-size:13px}.source-original{font-size:13px}}