.airflow-page[data-astro-cid-7goxanpf]{background:var(--paper)}.airflow-breadcrumb[data-astro-cid-7goxanpf]{padding:18px 0;background:var(--night);color:#ffffffad}.airflow-breadcrumb[data-astro-cid-7goxanpf] nav[data-astro-cid-7goxanpf]{display:flex;flex-wrap:wrap;gap:9px;align-items:center;font-size:.84rem}.airflow-breadcrumb[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf]{color:var(--heat-soft)}.airflow-hero[data-astro-cid-7goxanpf]{padding:clamp(72px,10vw,136px) 0 86px;background:linear-gradient(115deg,#14243ffa,#14243fb8),url(/images/Background_Images/hvac_tools_flat_lay_background.jpg) center / cover;color:var(--white)}.airflow-hero-grid[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(300px,.92fr);gap:clamp(30px,6vw,78px);align-items:center}.airflow-hero-copy[data-astro-cid-7goxanpf]{min-width:0}.airflow-hero[data-astro-cid-7goxanpf] .eyebrow[data-astro-cid-7goxanpf],.section-kicker[data-astro-cid-7goxanpf]{color:var(--heat-soft);font-size:.76rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.airflow-hero[data-astro-cid-7goxanpf] h1[data-astro-cid-7goxanpf]{max-width:760px;color:var(--white)!important;font-size:clamp(2.8rem,6vw,5.8rem);line-height:.99}.airflow-lede[data-astro-cid-7goxanpf]{max-width:720px;color:#ffffffd6;font-size:clamp(1.06rem,1.8vw,1.3rem);line-height:1.62}.airflow-actions[data-astro-cid-7goxanpf]{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.airflow-primary[data-astro-cid-7goxanpf],.airflow-secondary[data-astro-cid-7goxanpf]{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:12px 18px;border-radius:8px;font-weight:900}.airflow-primary[data-astro-cid-7goxanpf]{background:var(--heat);color:var(--white);box-shadow:0 12px 28px #f64b1b40}.airflow-secondary[data-astro-cid-7goxanpf]{border:1px solid rgba(255,255,255,.34);background:#ffffff14;color:var(--white)}.airflow-primary[data-astro-cid-7goxanpf]:hover,.airflow-secondary[data-astro-cid-7goxanpf]:hover{transform:translateY(-1px)}.airflow-hero-media[data-astro-cid-7goxanpf]{margin:0;overflow:hidden;border-radius:18px;box-shadow:0 24px 60px #00000038}.airflow-hero-media[data-astro-cid-7goxanpf] img[data-astro-cid-7goxanpf]{display:block;width:100%;height:auto;aspect-ratio:3 / 2;-o-object-fit:cover;object-fit:cover}.airflow-answer-card[data-astro-cid-7goxanpf]{margin:-38px 20px 0;position:relative;padding:24px 26px;border-radius:12px;background:var(--orange-soft);box-shadow:var(--shadow)}.airflow-answer-card[data-astro-cid-7goxanpf] span[data-astro-cid-7goxanpf],.card-label[data-astro-cid-7goxanpf]{display:block;margin-bottom:10px;color:var(--heat);font-size:.76rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase}.airflow-answer-card[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{margin:0;color:var(--ink);line-height:1.62}.airflow-answer-band[data-astro-cid-7goxanpf]{padding:clamp(58px,8vw,100px) 0;background:var(--night);color:var(--white)}.airflow-answer-grid[data-astro-cid-7goxanpf],.airflow-checks-grid[data-astro-cid-7goxanpf],.airflow-local-grid[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,7vw,96px);align-items:start}.airflow-answer-grid[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf],.airflow-checks[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf],.airflow-local-grid[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf]{margin:0;color:var(--white);font-size:clamp(2.1rem,4.5vw,4.5rem);line-height:1.02}.airflow-answer-grid[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{color:#ffffffc7;font-size:1.05rem;line-height:1.7}.airflow-answer-grid[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf],.source-line[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf],.evidence-links[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf],.airflow-safety-panel[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf]{color:var(--heat-soft);text-decoration:underline;text-underline-offset:3px}.airflow-section[data-astro-cid-7goxanpf]{padding:clamp(64px,9vw,108px) 0}.airflow-paper[data-astro-cid-7goxanpf]{background:var(--blue-soft);color:var(--ink)}.section-head[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.7fr);gap:44px;align-items:end;margin-bottom:34px}.section-head[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf]{max-width:760px;margin:0;color:var(--ink);font-size:clamp(2.15rem,5vw,4.8rem);line-height:1}.section-head[data-astro-cid-7goxanpf]>p[data-astro-cid-7goxanpf]{margin:0;color:var(--muted);font-size:1.05rem;line-height:1.65}.section-head-light[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf]{color:var(--white)}.section-head-light[data-astro-cid-7goxanpf]>p[data-astro-cid-7goxanpf]{color:#ffffffc7}.section-head-light[data-astro-cid-7goxanpf] .section-kicker[data-astro-cid-7goxanpf]{color:var(--heat-soft)}.airflow-card-grid[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.airflow-card[data-astro-cid-7goxanpf]{min-width:0;min-height:250px;padding:26px;border:1px solid var(--line);border-radius:12px;background:var(--white);box-shadow:var(--shadow)}.airflow-card[data-astro-cid-7goxanpf] h3[data-astro-cid-7goxanpf],.cause-card[data-astro-cid-7goxanpf] h3[data-astro-cid-7goxanpf],.visit-card[data-astro-cid-7goxanpf] h3[data-astro-cid-7goxanpf],.faq-grid[data-astro-cid-7goxanpf] h3[data-astro-cid-7goxanpf]{margin:0 0 11px;color:var(--ink);font-size:1.35rem;line-height:1.08}.airflow-card[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf],.cause-card[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf],.visit-card[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf],.faq-grid[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{margin:0;color:var(--muted);line-height:1.62}.airflow-note[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:minmax(0,.38fr) minmax(0,1fr);gap:24px;margin-top:18px;padding:22px 24px;border:1px solid var(--heat);background:var(--white);box-shadow:var(--shadow)}.airflow-note[data-astro-cid-7goxanpf] strong[data-astro-cid-7goxanpf]{color:var(--ink)}.airflow-note[data-astro-cid-7goxanpf] span[data-astro-cid-7goxanpf]{color:var(--muted)}.airflow-dark[data-astro-cid-7goxanpf],.airflow-faq[data-astro-cid-7goxanpf]{background:var(--night);color:var(--white)}.cause-grid[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.cause-card[data-astro-cid-7goxanpf]{min-width:0;min-height:290px;padding:24px;border:1px solid rgba(255,255,255,.14);border-radius:10px;background:#ffffff0f}.cause-card[data-astro-cid-7goxanpf] h3[data-astro-cid-7goxanpf]{color:var(--white)}.cause-card[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{color:#ffffffc2}.cause-number[data-astro-cid-7goxanpf],.visit-card[data-astro-cid-7goxanpf]>span[data-astro-cid-7goxanpf],.safe-check[data-astro-cid-7goxanpf]>span[data-astro-cid-7goxanpf]{display:block;margin-bottom:25px;color:var(--heat-soft);font-size:1.5rem;font-weight:900;letter-spacing:.04em}.source-line[data-astro-cid-7goxanpf]{max-width:920px;margin:26px 0 0;color:#ffffffad;line-height:1.65}.visit-grid[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:0;padding:0;list-style:none}.visit-card[data-astro-cid-7goxanpf]{min-width:0;min-height:280px;padding:24px;border:1px solid var(--line);border-radius:10px;background:var(--white);box-shadow:var(--shadow)}.visit-card[data-astro-cid-7goxanpf]>span[data-astro-cid-7goxanpf]{color:var(--heat)}.evidence-links[data-astro-cid-7goxanpf]{display:flex;flex-wrap:wrap;gap:9px 18px;align-items:baseline;margin-top:28px;color:var(--muted);font-size:.92rem}.airflow-checks[data-astro-cid-7goxanpf]{background:var(--heat);color:var(--white)}.airflow-checks[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf]{font-size:clamp(2.1rem,4.5vw,4.2rem)}.airflow-checks-grid[data-astro-cid-7goxanpf]>div[data-astro-cid-7goxanpf]>p[data-astro-cid-7goxanpf]:not(.section-kicker){max-width:620px;color:#fffc;line-height:1.65}.text-link[data-astro-cid-7goxanpf]{color:var(--white);font-weight:800;text-decoration:underline;text-underline-offset:3px}.safe-check-list[data-astro-cid-7goxanpf]{border-top:1px solid rgba(255,255,255,.35)}.safe-check[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:48px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.35)}.safe-check[data-astro-cid-7goxanpf]>span[data-astro-cid-7goxanpf]{margin:0;color:var(--white);font-size:1rem}.safe-check[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{margin:0;color:#ffffffe6;line-height:1.58}.airflow-safety[data-astro-cid-7goxanpf]{padding:clamp(58px,8vw,100px) 0;background:var(--paper)}.airflow-safety-panel[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,.55fr);gap:clamp(28px,7vw,92px);padding:clamp(32px,5vw,60px);border-radius:20px;background:var(--orange-soft);box-shadow:var(--shadow)}.airflow-safety-panel[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf]{max-width:760px;margin:0;color:var(--ink);font-size:clamp(2rem,4vw,3.8rem);line-height:1.02}.airflow-safety-panel[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{max-width:700px;color:var(--muted);line-height:1.65}.airflow-safety-panel[data-astro-cid-7goxanpf] .section-kicker[data-astro-cid-7goxanpf]{color:var(--heat)}.airflow-safety-panel[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf]{color:var(--heat);font-weight:800}.safety-callout[data-astro-cid-7goxanpf]{align-self:end;padding-top:18px;border-top:1px solid rgba(20,36,63,.25)}.safety-callout[data-astro-cid-7goxanpf] strong[data-astro-cid-7goxanpf]{display:block;margin-bottom:12px;color:var(--ink)}.safety-callout[data-astro-cid-7goxanpf] span[data-astro-cid-7goxanpf]{display:block;color:var(--muted);line-height:1.62}.airflow-local-grid[data-astro-cid-7goxanpf] h2[data-astro-cid-7goxanpf]{color:var(--ink)}.airflow-local-grid[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{color:var(--muted);line-height:1.68}.local-links[data-astro-cid-7goxanpf]{display:flex;flex-direction:column;padding:26px;border:1px solid var(--line);border-radius:12px;background:var(--white);box-shadow:var(--shadow)}.local-links[data-astro-cid-7goxanpf] h3[data-astro-cid-7goxanpf]{margin:0 0 8px;color:var(--ink)}.local-links[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf]{display:flex;justify-content:space-between;gap:16px;padding:15px 0;border-bottom:1px solid var(--line);color:var(--heat);font-weight:850}.local-links[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf]:last-child{border-bottom:0}.local-links[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf] span[data-astro-cid-7goxanpf]{font-size:1.2rem}.faq-grid[data-astro-cid-7goxanpf]{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.faq-grid[data-astro-cid-7goxanpf] article[data-astro-cid-7goxanpf]{min-width:0;padding:24px;border:1px solid rgba(255,255,255,.14);border-radius:10px;background:#ffffff0f}.faq-grid[data-astro-cid-7goxanpf] h3[data-astro-cid-7goxanpf]{color:var(--white)}.faq-grid[data-astro-cid-7goxanpf] p[data-astro-cid-7goxanpf]{color:#ffffffc2}@media (max-width: 980px){.airflow-hero-grid[data-astro-cid-7goxanpf],.airflow-answer-grid[data-astro-cid-7goxanpf],.airflow-checks-grid[data-astro-cid-7goxanpf],.airflow-local-grid[data-astro-cid-7goxanpf]{grid-template-columns:1fr}.airflow-card-grid[data-astro-cid-7goxanpf],.cause-grid[data-astro-cid-7goxanpf],.visit-grid[data-astro-cid-7goxanpf]{grid-template-columns:repeat(2,minmax(0,1fr))}.airflow-safety-panel[data-astro-cid-7goxanpf]{grid-template-columns:1fr}}@media (max-width: 640px){.airflow-hero[data-astro-cid-7goxanpf]{padding-top:78px}.airflow-hero[data-astro-cid-7goxanpf] h1[data-astro-cid-7goxanpf]{font-size:clamp(2.5rem,13vw,4rem)}.airflow-actions[data-astro-cid-7goxanpf] a[data-astro-cid-7goxanpf]{width:100%}.section-head[data-astro-cid-7goxanpf]{display:block}.section-head[data-astro-cid-7goxanpf]>p[data-astro-cid-7goxanpf]{margin-top:18px}.airflow-card-grid[data-astro-cid-7goxanpf],.cause-grid[data-astro-cid-7goxanpf],.visit-grid[data-astro-cid-7goxanpf],.faq-grid[data-astro-cid-7goxanpf]{grid-template-columns:1fr}.airflow-card[data-astro-cid-7goxanpf],.cause-card[data-astro-cid-7goxanpf],.visit-card[data-astro-cid-7goxanpf]{min-height:auto}.airflow-note[data-astro-cid-7goxanpf]{grid-template-columns:1fr;gap:10px}.airflow-answer-card[data-astro-cid-7goxanpf]{margin-right:10px;margin-left:10px}}