/* Expansion-only styles. Original styles.css is preserved byte for byte. */
.extension .intro{max-width:860px}.extension .intro>p:last-child{max-width:68ch}.extension .breadcrumb{padding-top:24px;font-size:.875rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:9px}.extension .breadcrumb a,.extension .prose a,.extension .related a,.extension .method a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.extension .planner{grid-template-columns:1.12fr 1fr}.extension .setup{position:static}.extension .results-column{position:sticky;top:24px}.extension .input-grid{gap:20px}.extension .field label{font-size:.9375rem;line-height:1.4;min-height:0}.extension .field input,.extension .field select{width:100%;min-height:48px;border:1px solid #bbc4d0;border-radius:9px;padding:10px 12px;background:white;color:var(--text);font:inherit}.extension select{font:inherit}.extension input[aria-invalid=true]{border-color:#aa2c20;background:#fff3f1}.extension .field .hint{font-size:.875rem}.extension .field.full{grid-column:1/-1}.extension .form-section{border:0;border-top:1px solid var(--line);padding-top:23px;margin-top:25px}.extension .form-section legend{font-size:1.05rem;margin-bottom:12px;padding-right:8px}.extension .form-section:first-of-type{border:0;margin-top:0;padding-top:0}.extension .group-note{font-size:.9375rem;margin-bottom:18px}.extension .empty-result{padding:18px;background:var(--bg);border-radius:9px;color:var(--muted)}.extension .result-lead{background:var(--accent-soft);padding:20px;border-radius:12px;margin:0 0 20px}.extension .result-lead p{font-size:.9375rem;color:#405784}.extension .result-lead strong{display:block;font-size:clamp(1.7rem,3.1vw,2.5rem);line-height:1.2;letter-spacing:-.035em;margin:10px 0;color:var(--text);overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.extension .result-lead .hint{margin:0;color:#405784}.extension .breakdown{margin:0}.extension .breakdown>div{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.9375rem}.extension .breakdown dt{color:var(--muted)}.extension .breakdown dd{margin:0;text-align:right;font-weight:650;font-variant-numeric:tabular-nums;overflow-wrap:anywhere;min-width:0}.extension .breakdown .total{border-top:2px solid var(--line);font-weight:700}.extension .result-warning{color:#774605;background:#fff6e7;border-radius:9px;padding:14px;margin-top:16px}.extension .result-explanation{margin-top:18px;font-size:.9375rem}.extension .tool-actions{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}.extension .tool-actions button{flex:1}.extension .secondary-button{font-size:.9375rem}.extension .method{margin-top:45px;max-width:850px;line-height:1.75}.extension .method h2{margin-bottom:15px}.extension .method p+p{margin-top:13px}.extension .formula{padding:14px 18px;background:white;border:1px solid var(--line);border-radius:10px;color:var(--text);overflow-wrap:anywhere}.extension .related{margin:40px 0}.extension .related h2{margin-bottom:18px}.extension .related ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));list-style:none;padding:0;gap:14px;margin:0}.extension .related li{border-top:1px solid var(--line);padding-top:13px}.extension .related a{display:inline-flex;align-items:center;min-height:44px}.extension .hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:8px 0 35px}.extension .hub-card{display:flex;flex-direction:column;gap:14px;align-items:flex-start}.extension .hub-card h2{font-size:1.25rem}.extension .hub-card p{flex:1}.extension .hub-card a{min-height:44px;color:var(--accent);font-weight:650;display:flex;align-items:center;gap:10px}.extension .hub-card a:hover{text-decoration:underline}.extension .hub-card .icon{width:20px;height:20px}.extension .guide-group{margin-bottom:42px}.extension .guide-group>h2{margin-bottom:20px}.extension .guide-group .hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.extension .article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(200px,1fr);gap:48px;margin-bottom:48px;align-items:start}.extension .prose{font-size:1.0625rem;line-height:1.8;min-width:0}.extension .prose h2{font-size:1.4rem;margin:35px 0 16px;line-height:1.35}.extension .prose h2:first-child{margin-top:0}.extension .prose h3{font-size:1.125rem;margin:25px 0 12px}.extension .prose p{margin:0 0 18px}.extension .prose li{margin-bottom:9px;color:var(--muted)}.extension .prose ul,.extension .prose ol{padding-left:25px}.extension .prose strong{color:var(--text)}.extension .article-aside{position:sticky;top:24px}.extension .article-aside p{margin:12px 0 18px}.extension .article-aside a.primary-button{padding:12px;text-align:center;line-height:1.5}.extension .prose .example{padding:20px;border-left:3px solid var(--accent);background:var(--accent-soft);margin:24px 0;border-radius:0 9px 9px 0}.extension .prose .example p:last-child{margin:0}.extension .prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.9375rem}.extension .prose th,.extension .prose td{padding:10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.extension .prose th{color:var(--text)}.extension .prose td{color:var(--muted)}.extension .table-scroll{overflow-x:auto}.extension .preset-note{margin-bottom:14px}.extension .preset-controls{margin-bottom:20px}.extension .preset-controls button{margin-top:14px;width:100%}.extension .copy-status{margin-top:12px;color:var(--accent)}.extension .small-note{font-size:.875rem;margin-top:14px}.extension .extension-disclaimer{padding:22px 0;margin-top:20px;border-top:1px solid var(--line);font-size:.875rem}.extension .error-message{margin-bottom:18px}.extension .export-text{width:100%;min-height:160px}.extension .unit-label{font-size:.875rem;color:var(--muted);font-weight:400}.extension .site-footer{margin-top:30px}.extension .site-footer a{min-height:44px;display:flex;align-items:center}
@media(max-width:1000px){.extension .hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.extension .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:24px}}
@media(max-width:850px){.extension .planner{grid-template-columns:1fr 1fr}.extension .input-grid{grid-template-columns:1fr}.extension .breakdown>div{gap:12px}.extension .card{padding:22px}}
@media(max-width:700px){.extension .planner{grid-template-columns:1fr}.extension .results-column{position:static}.extension .input-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 12px}.extension .field label{font-size:1rem}.extension .field .hint,.extension .small-note,.extension .group-note,.extension .unit-label,.extension .breadcrumb,.extension .extension-disclaimer,.extension .secondary-button,.extension .result-lead p,.extension .result-explanation,.extension .breakdown>div,.extension .prose table{font-size:1rem}.extension .field select{padding-inline:8px}.extension .hub-grid,.extension .guide-group .hub-grid{grid-template-columns:1fr}.extension .article-layout{grid-template-columns:1fr;gap:24px}.extension .article-aside{position:static;order:-1}.extension .article-aside .primary-button{margin-top:12px}.extension .related ul{grid-template-columns:1fr}.extension .intro{padding-inline:0}.extension .prose{font-size:1rem}.extension .card{padding:22px 18px}.extension .result-lead strong{font-size:2rem}.extension .method{margin-top:32px}.extension .form-section legend{font-size:1.125rem}.extension .table-scroll{margin-inline:-2px}.extension .prose th,.extension .prose td{padding:8px 6px}}
@media(max-width:380px){.extension .input-grid{grid-template-columns:1fr}.extension .breakdown>div{flex-wrap:wrap;gap:4px}.extension .breakdown dd{margin-left:auto}.extension .tool-actions{flex-direction:column}}
@media print{.extension .setup,.extension .tool-actions,.extension .breadcrumb,.extension .related,.extension .article-aside{display:none}.extension .results-column{position:static}.extension .planner,.extension .article-layout{display:block}.extension .intro{display:block}.extension .method{break-before:auto}}