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14px;font-size:clamp(1.35rem,4vw,1.85rem)}h3{margin:0 0 8px;font-size:1.1rem}p{margin:0 0 18px}.lede{color:#334155;max-width:75ch;font-size:1.12rem}.grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,235px),1fr));gap:16px;margin:20px 0 28px;display:grid}.card{border:1px solid var(--line);background:#fff;border-radius:12px;padding:20px;box-shadow:0 5px 18px #0f172a0a}.card p:last-child{margin-bottom:0}.meta,.article-meta{color:var(--muted);font-size:.9rem}.article-meta{margin-bottom:24px}.table-wrap{border:1px solid var(--line);background:#fff;border-radius:10px;max-width:100%;margin:18px 0 28px;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.94rem}.table-wrap table{min-width:640px}th,td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:11px 13px}th{letter-spacing:.02em;background:#eef2f7;font-size:.85rem}tr:last-child td{border-bottom:0}.calculator{border:1px solid var(--line);background:#fff;border-radius:14px;margin:22px 0 28px;padding:clamp(18px,5vw,30px);box-shadow:0 10px 30px #0f172a0f}.calculator fieldset{border:1px solid var(--line);border-radius:10px;min-width:0;margin:0 0 22px;padding:14px}.calculator legend{color:var(--navy);padding:0 6px;font-weight:700}.field-grid{grid-template-columns:1fr;gap:16px;display:grid}.field-grid>*{min-width:0}.field{flex-direction:column;gap:5px;display:flex}.field label{color:var(--navy-800);font-weight:650}.field small,.field-note{color:var(--muted);font-size:.82rem;line-height:1.45}.field input,.field select{width:100%;min-height:44px;color:var(--ink);font:inherit;background:#fff;border:1px solid #b8c4d4;border-radius:7px;padding:9px 11px}.field input[type=checkbox]{width:20px;min-height:20px;margin:2px 0 0}.checkbox-field{grid-template-columns:20px 1fr;align-items:start;gap:9px;display:grid}.checkbox-field label{margin-top:-2px}.radio-option{align-items:center;gap:9px;min-height:44px;display:flex}.radio-option input{width:20px;height:20px;margin:0}.radio-option 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0;font-size:1.15rem;font-weight:750}.formula{border-left:4px solid var(--navy);overflow-wrap:anywhere;background:#eef2f7;border-radius:0 8px 8px 0;margin:16px 0 20px;padding:16px 18px}.formula p{margin:0 0 8px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9rem}.formula p:last-child{margin-bottom:0}.faq{margin:0}.faq dt{color:var(--navy-800);margin-top:20px;font-weight:750}.faq dt:first-child{margin-top:0}.faq dd{margin:6px 0 0}.related{margin-top:36px;padding-top:4px}.related ul{padding-left:22px}.tool-card{flex-direction:column;display:flex}.tool-card p{flex:1}.tool-card .meta{margin:14px 0 0}@media (width>=640px){.field-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.field-grid--three{grid-template-columns:repeat(3,minmax(0,1fr))}.result-list>div{grid-template-columns:minmax(0,1fr) auto;align-items:baseline;gap:18px;display:grid}.result-list dd{text-align:right;margin:0}}@media (width>=860px){main.container{padding-top:44px}}.drawing-figure{margin:28px 0 34px}.drawing-figure img{border:1px solid var(--line);background:#f7f4ec;border-radius:10px;width:100%;height:auto;display:block}.drawing-figure figcaption{border-left:3px solid var(--amber);color:var(--muted);margin-top:10px;padding-left:12px;font-size:.86rem;line-height:1.5}