/* Engineering tools: an extension of the shared brand system, no external assets. */
.hvac-workspace{display:grid;grid-template-columns:250px minmax(0,1fr);gap:45px;align-items:start}.hvac-tool-nav{display:grid;gap:8px;position:sticky;top:125px}.hvac-tool-nav a{display:block;padding:13px 15px;border:1px solid #dce2e5;font-size:.85rem;font-weight:600;line-height:1.5;min-height:48px}.hvac-tool-nav a:hover{border-color:var(--blue)}.hvac-tool-nav a[aria-current=page]{background:var(--ink);border-color:var(--ink);color:#fff}.hvac-tool-heading h2{font-size:clamp(1.8rem,3vw,2.6rem)}.hvac-tool-heading p{max-width:750px}.hvac-calc-content{min-width:0;scroll-margin-top:120px}.hvac-assumptions{background:#f1f5f7;border-left:3px solid var(--blue);padding:24px}.hvac-assumptions p{font-size:.85rem;margin-top:12px;margin-bottom:0}.hvac-equation{font-family:monospace;overflow-wrap:anywhere;font-size:.9rem!important;color:var(--ink)}.hvac-tools .form-grid{align-items:start}.hvac-tools .field{min-width:0}.hvac-tools input,.hvac-tools select{width:100%;min-width:0}.hvac-tools .field small{font-size:.76rem;line-height:1.6}.hvac-form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:10px}.hvac-results{scroll-margin-top:120px;margin-block:40px}.hvac-results:empty{margin:0}.hvac-results h2{font-size:1.9rem}.hvac-metrics{display:grid;grid-template-columns:1fr 1fr;margin:24px 0;gap:1px;background:var(--line);border:1px solid var(--line)}.hvac-metrics>div{background:#fff;padding:21px;min-width:0}.hvac-metrics dt{font-size:.8rem;color:var(--muted);font-weight:600;margin-bottom:10px}.hvac-metrics dd{margin:0;font-size:1.75rem;font-weight:600;line-height:1.3;color:var(--ink);overflow-wrap:anywhere}.hvac-metrics dd span{font-size:.8rem;font-weight:400;display:inline-block;line-height:1.5}.hvac-result-notes{padding:25px;background:var(--paper);border:1px solid var(--line)}.hvac-result-notes h3{font-size:1.25rem}.hvac-result-notes li{font-size:.86rem;margin-bottom:13px}.hvac-result-notes li:last-child{margin-bottom:0}.hvac-references{padding-top:25px;border-top:1px solid var(--line);margin-top:35px}.hvac-references h3{font-size:1.2rem}.hvac-references li{font-size:.82rem;margin-bottom:10px;overflow-wrap:anywhere}.hvac-references a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.hvac-references p a{font-size:inherit}.hvac-tools .notice-error p{margin:10px 0 0}.hvac-tools .page-hero .button-row a{font-size:.86rem}
@media(max-width:1000px){.hvac-workspace{grid-template-columns:1fr;gap:35px}.hvac-tool-nav{position:static;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.hvac-tool-nav a{padding:12px;font-size:.82rem}.hvac-tool-heading{margin-top:10px}}
@media(max-width:680px){.hvac-assumptions{padding:18px}.hvac-assumptions p{font-size:.8rem}.hvac-metrics{grid-template-columns:1fr}.hvac-metrics>div{padding:19px}.hvac-metrics dd{font-size:1.6rem}.hvac-result-notes{padding:20px}.hvac-result-notes li{font-size:.81rem}.hvac-form-actions{align-items:stretch;flex-direction:column;gap:15px}.hvac-form-actions .btn{width:100%}.hvac-form-actions .text-link{align-self:flex-start}.hvac-tool-nav a{font-size:.76rem}.hvac-tools .page-hero .button-row{gap:16px}.hvac-tools .page-hero .button-row a{font-size:.77rem}.hvac-results h2{font-size:1.6rem}}
@media print{.hvac-tool-nav,.hvac-form-actions{display:none}.hvac-workspace{display:block}.hvac-results{break-inside:avoid}.hvac-results:focus{outline:0}.hvac-metrics{grid-template-columns:1fr 1fr}.hvac-result-notes,.hvac-assumptions{background:#fff;border:1px solid #777}.hvac-tools form input,.hvac-tools form select{border:1px solid #777!important}}