.duct-hero[data-astro-cid-s5zndavn]{background:linear-gradient(120deg,#14243ff7,#14243fc2),url(/images/Background_Images/hvac_tools_flat_lay_background.jpg) center / cover}.duct-hero[data-astro-cid-s5zndavn] .longform-answer-card[data-astro-cid-s5zndavn] p[data-astro-cid-s5zndavn]{color:var(--ink)!important}.duct-answer-band[data-astro-cid-s5zndavn],.duct-check-band[data-astro-cid-s5zndavn],.duct-next-step[data-astro-cid-s5zndavn]{background:var(--paper)}.duct-answer-grid[data-astro-cid-s5zndavn],.duct-sign-grid[data-astro-cid-s5zndavn],.duct-comparison-grid[data-astro-cid-s5zndavn]{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.duct-comparison-grid[data-astro-cid-s5zndavn]{grid-template-columns:repeat(3,minmax(0,1fr))}.duct-answer-grid[data-astro-cid-s5zndavn] .longform-side-card[data-astro-cid-s5zndavn],.duct-sign-card[data-astro-cid-s5zndavn],.duct-comparison-grid[data-astro-cid-s5zndavn] .longform-side-card[data-astro-cid-s5zndavn]{height:100%}.duct-card-label[data-astro-cid-s5zndavn]{display:block;margin-bottom:10px;color:var(--heat);font-size:.76rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase}.duct-limit-card[data-astro-cid-s5zndavn]{border-color:#f64b1b66;background:var(--orange-soft)}.duct-section-intro[data-astro-cid-s5zndavn],.duct-next-grid[data-astro-cid-s5zndavn]{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1fr);gap:clamp(28px,7vw,96px);align-items:start}.duct-section-intro[data-astro-cid-s5zndavn]{margin-bottom:30px}.duct-section-intro[data-astro-cid-s5zndavn] h2[data-astro-cid-s5zndavn],.duct-next-grid[data-astro-cid-s5zndavn] h2[data-astro-cid-s5zndavn]{margin:0;color:var(--ink);font-size:clamp(2rem,4vw,3.8rem);line-height:1.02}.duct-section-intro[data-astro-cid-s5zndavn]>p[data-astro-cid-s5zndavn],.duct-next-grid[data-astro-cid-s5zndavn]>div[data-astro-cid-s5zndavn]>p[data-astro-cid-s5zndavn]{margin:0;color:var(--muted);font-size:1.05rem;line-height:1.72}.duct-check-list[data-astro-cid-s5zndavn]{display:grid;gap:14px;margin-top:28px}.duct-check-list[data-astro-cid-s5zndavn] article[data-astro-cid-s5zndavn]{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:20px 0;border-top:1px solid var(--line)}.duct-check-list[data-astro-cid-s5zndavn] strong[data-astro-cid-s5zndavn]{color:var(--heat);font-size:1.4rem;letter-spacing:.04em}.duct-check-list[data-astro-cid-s5zndavn] h3[data-astro-cid-s5zndavn]{margin:0 0 6px;color:var(--ink);font-size:1.2rem}.duct-check-list[data-astro-cid-s5zndavn] p[data-astro-cid-s5zndavn],.duct-note-card[data-astro-cid-s5zndavn] p[data-astro-cid-s5zndavn],.duct-call-card[data-astro-cid-s5zndavn] li[data-astro-cid-s5zndavn]{color:var(--muted);line-height:1.65}.duct-check-list[data-astro-cid-s5zndavn] p[data-astro-cid-s5zndavn]{margin:0}.duct-note-card[data-astro-cid-s5zndavn]{background:var(--night)}.duct-note-card[data-astro-cid-s5zndavn] h2[data-astro-cid-s5zndavn],.duct-note-card[data-astro-cid-s5zndavn] p[data-astro-cid-s5zndavn]{color:var(--white)}.duct-safety-band[data-astro-cid-s5zndavn]{padding:clamp(58px,7vw,104px) 0;background:var(--night);color:var(--white)}.duct-safety-grid[data-astro-cid-s5zndavn]{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,.72fr);gap:clamp(28px,7vw,96px)}.duct-safety-grid[data-astro-cid-s5zndavn] h2[data-astro-cid-s5zndavn]{max-width:720px;margin:0 0 18px;color:var(--white);font-size:clamp(2rem,4vw,3.8rem);line-height:1.02}.duct-safety-grid[data-astro-cid-s5zndavn] .longform-kicker[data-astro-cid-s5zndavn]{color:var(--heat-soft)!important}.duct-safety-grid[data-astro-cid-s5zndavn] p[data-astro-cid-s5zndavn]{color:#fffc;line-height:1.65}.duct-safety-list[data-astro-cid-s5zndavn]{align-self:end;border-top:1px solid rgba(255,255,255,.22)}.duct-safety-list[data-astro-cid-s5zndavn] p[data-astro-cid-s5zndavn]{margin:0;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.22)}.duct-safety-list[data-astro-cid-s5zndavn] strong[data-astro-cid-s5zndavn]{color:var(--heat-soft)}.duct-next-grid[data-astro-cid-s5zndavn]{align-items:center}.duct-call-card[data-astro-cid-s5zndavn]{background:var(--white)}.duct-call-card[data-astro-cid-s5zndavn] h3[data-astro-cid-s5zndavn]{margin-top:0;color:var(--ink)}.duct-call-card[data-astro-cid-s5zndavn] ul[data-astro-cid-s5zndavn]{display:grid;gap:12px;margin:0;padding-left:20px}.duct-call-card[data-astro-cid-s5zndavn] li[data-astro-cid-s5zndavn]::marker{color:var(--heat)}@media (max-width: 980px){.duct-comparison-grid[data-astro-cid-s5zndavn],.duct-safety-grid[data-astro-cid-s5zndavn],.duct-section-intro[data-astro-cid-s5zndavn],.duct-next-grid[data-astro-cid-s5zndavn]{grid-template-columns:1fr}}@media (max-width: 640px){.duct-answer-grid[data-astro-cid-s5zndavn],.duct-sign-grid[data-astro-cid-s5zndavn]{grid-template-columns:1fr}}