.filter-guide[data-astro-cid-3rtzvlzn]{background:var(--paper)}.filter-hero[data-astro-cid-3rtzvlzn]{background:linear-gradient(120deg,#14243ffa,#14243fc2),url(/images/Background_Images/hvac_tools_flat_lay_background.jpg) center / cover}.filter-hero[data-astro-cid-3rtzvlzn] .longform-answer-card[data-astro-cid-3rtzvlzn] p[data-astro-cid-3rtzvlzn]{color:var(--ink)!important}.filter-overview[data-astro-cid-3rtzvlzn],.filter-factors[data-astro-cid-3rtzvlzn],.filter-steps[data-astro-cid-3rtzvlzn],.filter-warning-band[data-astro-cid-3rtzvlzn]{background:var(--blue-soft)}.filter-paper[data-astro-cid-3rtzvlzn],.filter-merv[data-astro-cid-3rtzvlzn]{background:var(--paper)}.filter-dark-band[data-astro-cid-3rtzvlzn]{background:var(--night);color:var(--white)}.filter-detail-grid[data-astro-cid-3rtzvlzn]{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.filter-detail-card[data-astro-cid-3rtzvlzn]{min-height:220px}.filter-detail-card[data-astro-cid-3rtzvlzn] h3[data-astro-cid-3rtzvlzn],.filter-check-card[data-astro-cid-3rtzvlzn] h3[data-astro-cid-3rtzvlzn],.filter-callout[data-astro-cid-3rtzvlzn] h3[data-astro-cid-3rtzvlzn],.filter-symptom-card[data-astro-cid-3rtzvlzn] h3[data-astro-cid-3rtzvlzn]{margin:12px 0 10px;color:var(--ink);font-size:1.35rem;line-height:1.1;text-transform:none}.filter-label[data-astro-cid-3rtzvlzn],.filter-source-note[data-astro-cid-3rtzvlzn] a[data-astro-cid-3rtzvlzn],.filter-source-links[data-astro-cid-3rtzvlzn] a[data-astro-cid-3rtzvlzn],.filter-callout[data-astro-cid-3rtzvlzn] a[data-astro-cid-3rtzvlzn]{color:var(--heat);font-weight:900}.filter-label[data-astro-cid-3rtzvlzn]{display:block;font-size:.76rem;letter-spacing:.1em;text-transform:uppercase}.filter-source-note[data-astro-cid-3rtzvlzn]{max-width:920px;margin:24px 0 0;color:var(--muted);font-size:.94rem;line-height:1.65}.filter-section-grid[data-astro-cid-3rtzvlzn],.filter-warning-grid[data-astro-cid-3rtzvlzn]{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.72fr);gap:clamp(28px,7vw,92px);align-items:start}.filter-main-copy[data-astro-cid-3rtzvlzn] h2[data-astro-cid-3rtzvlzn],.filter-warning-grid[data-astro-cid-3rtzvlzn] h2[data-astro-cid-3rtzvlzn],.filter-section-intro[data-astro-cid-3rtzvlzn] h2[data-astro-cid-3rtzvlzn]{max-width:760px;color:var(--ink);font-size:clamp(2rem,4.4vw,4.4rem);line-height:1.02;text-transform:none}.filter-main-copy[data-astro-cid-3rtzvlzn] p[data-astro-cid-3rtzvlzn]{max-width:720px}.filter-source-links[data-astro-cid-3rtzvlzn]{display:grid;gap:10px;margin-top:24px}.filter-check-card[data-astro-cid-3rtzvlzn]{padding:28px}.filter-check-card[data-astro-cid-3rtzvlzn] ol[data-astro-cid-3rtzvlzn]{display:grid;gap:14px;margin:0;padding-left:22px;color:var(--muted);line-height:1.55}.filter-check-card[data-astro-cid-3rtzvlzn] li[data-astro-cid-3rtzvlzn]::marker{color:var(--heat);font-weight:900}.filter-section-intro[data-astro-cid-3rtzvlzn]{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1fr);gap:48px;align-items:end;margin-bottom:30px}.filter-section-intro[data-astro-cid-3rtzvlzn] h2[data-astro-cid-3rtzvlzn]{color:var(--white);margin-bottom:0}.filter-section-intro[data-astro-cid-3rtzvlzn]>p[data-astro-cid-3rtzvlzn]{margin:0;color:#ffffffc7;line-height:1.7}.filter-symptom-grid[data-astro-cid-3rtzvlzn]{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.filter-symptom-card[data-astro-cid-3rtzvlzn]{padding:28px;border:1px solid rgba(255,255,255,.14);border-radius:10px;background:#ffffff0f}.filter-symptom-card[data-astro-cid-3rtzvlzn] h3[data-astro-cid-3rtzvlzn]{color:var(--white)}.filter-symptom-card[data-astro-cid-3rtzvlzn] ul[data-astro-cid-3rtzvlzn]{display:grid;gap:12px;margin:0;padding-left:20px;color:#ffffffc7;line-height:1.55}.filter-symptom-card[data-astro-cid-3rtzvlzn] li[data-astro-cid-3rtzvlzn]::marker{color:var(--heat-soft)}.filter-source-note-dark[data-astro-cid-3rtzvlzn]{color:#ffffffbd}.filter-source-note-dark[data-astro-cid-3rtzvlzn] a[data-astro-cid-3rtzvlzn]{color:var(--heat-soft)}.filter-step-grid[data-astro-cid-3rtzvlzn]{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;padding:0;margin:0;list-style:none}.filter-step-grid[data-astro-cid-3rtzvlzn] li[data-astro-cid-3rtzvlzn]{min-height:250px;padding:22px;border:1px solid var(--line);border-radius:10px;background:var(--white);box-shadow:0 12px 32px #14243f0f}.filter-step-grid[data-astro-cid-3rtzvlzn] li[data-astro-cid-3rtzvlzn]>span[data-astro-cid-3rtzvlzn]{display:block;margin-bottom:28px;color:var(--heat);font-size:1.5rem;font-weight:900;letter-spacing:.04em}.filter-step-grid[data-astro-cid-3rtzvlzn] p[data-astro-cid-3rtzvlzn]{margin:0;color:var(--muted);line-height:1.55}.filter-callout[data-astro-cid-3rtzvlzn]{padding:28px}.filter-callout[data-astro-cid-3rtzvlzn] p[data-astro-cid-3rtzvlzn]{margin-bottom:18px}.filter-warning-grid[data-astro-cid-3rtzvlzn]{align-items:center}.filter-warning-list[data-astro-cid-3rtzvlzn]{display:grid;gap:10px}.filter-warning-list[data-astro-cid-3rtzvlzn] p[data-astro-cid-3rtzvlzn]{display:grid;grid-template-columns:24px 1fr;gap:10px;margin:0;padding:13px 0;border-bottom:1px solid var(--line);color:var(--muted);line-height:1.45}.filter-warning-list[data-astro-cid-3rtzvlzn] p[data-astro-cid-3rtzvlzn] span[data-astro-cid-3rtzvlzn]{color:var(--heat);font-size:1.2rem;font-weight:900}@media (max-width: 980px){.filter-section-grid[data-astro-cid-3rtzvlzn],.filter-warning-grid[data-astro-cid-3rtzvlzn]{grid-template-columns:1fr}.filter-step-grid[data-astro-cid-3rtzvlzn]{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 640px){.filter-detail-grid[data-astro-cid-3rtzvlzn],.filter-symptom-grid[data-astro-cid-3rtzvlzn],.filter-step-grid[data-astro-cid-3rtzvlzn]{grid-template-columns:1fr}.filter-section-intro[data-astro-cid-3rtzvlzn]{display:block}.filter-section-intro[data-astro-cid-3rtzvlzn]>p[data-astro-cid-3rtzvlzn]{margin-top:18px}.filter-step-grid[data-astro-cid-3rtzvlzn] li[data-astro-cid-3rtzvlzn]{min-height:auto}}