/* Brand: airheadshvac.pro — refrigerant charge-sheet / louver skin */
:root {
  --maxw: 1140px;
  --section-pad: 88px;
  --air-gap: 22px;
  --air-louver: color-mix(in srgb, var(--dna-ink) 8%, transparent);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--dna-font-body, "Red Hat Text", system-ui, sans-serif);
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 11px,
      var(--air-louver) 11px 12px
    ),
    var(--dna-bg, #f4f7f2);
  color: var(--dna-ink, #1c2a22);
  line-height: 1.55;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--dna-accent, #2f6b3a); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 {
  font-family: var(--dna-font-display, "Red Hat Display", sans-serif);
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin: 0 0 .45em;
  font-weight: 700;
}
p { margin: 0 0 1em; color: var(--dna-ink-soft, #5a6d62); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px; border-radius: 6px;
  padding: 13px 22px; border: 0; cursor: pointer;
  font-family: inherit; text-decoration: none; gap: 8px;
}
.btn:hover { text-decoration: none; }
.btn-solid {
  background: var(--dna-accent, #2f6b3a);
  color: var(--dna-accent-ink, #fff);
}
.btn-solid:hover { filter: brightness(1.06); }
.btn-ghost {
  background: transparent;
  color: var(--dna-ink, #1c2a22);
  border: 1.5px solid var(--dna-line, #c9d6cc);
}
.nav-cta { white-space: nowrap; }

/* ---- vent topbar ---- */
.air17-ventbar {
  background: var(--dna-ink, #1c2a22);
  color: color-mix(in srgb, var(--dna-bg) 82%, #fff);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
}
.air17-ventbar .wrap {
  display: flex; justify-content: space-between; gap: 12px;
  padding-top: 9px; padding-bottom: 9px; align-items: center;
}
.air17-ventbar a { color: #fff; letter-spacing: 0; font-size: 13px; }

.air17-mast {
  background: color-mix(in srgb, var(--dna-surface) 92%, #fff);
  border-bottom: 1px solid var(--dna-line, #c9d6cc);
  position: sticky; top: 0; z-index: 40;
}
.air17-mast-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 18px;
  align-items: center;
  padding: 12px 28px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.air17-brand {
  display: flex; gap: 12px; align-items: center;
  text-decoration: none; color: inherit;
}
.air17-brand:hover { text-decoration: none; }
.air17-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  background: var(--dna-accent, #2f6b3a);
  color: var(--dna-accent-ink, #fff);
  border-radius: 8px;
}
.air17-mark svg { width: 22px; height: 22px; }
.air17-brand b { display: block; font-size: 15px; font-family: var(--dna-font-display); }
.air17-brand small {
  display: block; font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--dna-ink-soft, #5a6d62);
}
.air17-nav { display: flex; gap: 22px; justify-content: center; }
.air17-nav a {
  color: var(--dna-ink, #1c2a22);
  font-size: 14px; font-weight: 650;
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.air17-nav a.active { border-bottom-color: var(--dna-accent, #2f6b3a); }
.air17-burger {
  display: none; width: 42px; height: 42px;
  border: 1px solid var(--dna-line, #c9d6cc);
  background: var(--dna-surface, #fff);
  border-radius: 8px; cursor: pointer;
}
.air17-burger span {
  display: block; width: 18px; height: 2px; margin: 4px auto;
  background: var(--dna-ink, #1c2a22);
}
.air17-sheet {
  display: none; background: var(--dna-surface, #fff);
  border-top: 1px solid var(--dna-line, #c9d6cc);
  padding: 12px 28px 18px;
}
.air17-sheet.open { display: grid; gap: 10px; }
.air17-sheet a { font-weight: 700; color: var(--dna-ink); }

/* ---- hero overlay + photo ---- */
.air17-hero { background: var(--dna-bg, #f4f7f2); }
.air17-hero-overlay {
  position: relative; min-height: 560px;
  display: flex; align-items: flex-end; overflow: hidden;
}
.air17-hero-photo {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.air17-hero-overlay::after {
  content: "";
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(105deg, color-mix(in srgb, var(--dna-ink) 78%, transparent) 0 46%, color-mix(in srgb, var(--dna-ink) 18%, transparent) 100%);
}
.air17-hero-overlay .hero-inner,
html.dna-hero-bleed .air17-hero-overlay .hero-inner {
  position: relative; z-index: 2;
  padding: 54px 28px; width: 100%; max-width: var(--maxw); margin: 0 auto;
}
.air17-hero-overlay .card {
  background: var(--dna-surface, #fff);
  border-radius: 4px 18px 18px 4px;
  padding: 32px 30px;
  max-width: 520px;
  box-shadow: 0 28px 64px -24px rgba(12, 28, 18, .55);
  border-left: 6px solid var(--dna-accent, #2f6b3a);
}
.air17-hero-overlay .eyebrow {
  font-size: 12px; letter-spacing: .16em; text-transform: uppercase;
  font-weight: 800; color: var(--dna-accent, #2f6b3a);
}
.air17-hero-overlay h1 { font-size: 36px; margin: 10px 0 12px; }
.air17-hero-overlay .sub { font-size: 16px; max-width: 44ch; }
.air17-hero-overlay .cta { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

/* ---- approach zigzag ---- */
.air17-proc { background: var(--dna-surface, #fff); padding: var(--section-pad) 0; }
.air17-proc .head { max-width: 560px; margin-bottom: 40px; }
.air17-proc .eyebrow,
.air17-about .eyebrow,
.air17-svc .eyebrow,
.air17-ask .eyebrow,
.air17-louvergrid .eyebrow,
.air17-fork .eyebrow {
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase;
  font-weight: 800; color: var(--dna-accent, #2f6b3a);
}
.air17-proc h2, .air17-svc h2, .air17-ask h2, .air17-louvergrid h2, .air17-fork h2 {
  font-size: 34px;
}
.air17-proc-zigzag .air17-steps { display: grid; gap: 8px; }
.air17-proc-zigzag .step {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
  padding: 18px 0;
}
.air17-proc-zigzag .step:nth-child(even) .vis { order: -1; }
.air17-proc-zigzag .vis {
  min-height: 168px; border-radius: 16px;
  background:
    linear-gradient(150deg, var(--dna-surface-2, #e7eee8), color-mix(in srgb, var(--dna-accent) 18%, #fff));
  border: 1px solid var(--dna-line, #c9d6cc);
  position: relative;
}
.air17-proc-zigzag .vis b {
  position: absolute; left: 20px; top: 14px;
  font-size: 44px; color: var(--dna-accent, #2f6b3a); opacity: .45;
}
.air17-proc-zigzag h3 { font-size: 22px; }
.air17-proc-zigzag p { max-width: 460px; }

/* ---- about splitimage ---- */
.air17-about { background: var(--dna-surface-2, #e7eee8); padding: var(--section-pad) 0; }
.air17-about-splitimage .grid {
  display: grid; grid-template-columns: .92fr 1.08fr; gap: 52px; align-items: center;
}
.air17-about-splitimage .frame {
  border-radius: 18px; overflow: hidden; min-height: 340px;
  border: 1px solid var(--dna-line, #c9d6cc);
}
.air17-about-splitimage .frame img { width: 100%; height: 100%; object-fit: cover; min-height: 340px; }
.air17-about-splitimage h2 { font-size: 34px; margin: 10px 0 14px; }
.air17-about-splitimage ul { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; }
.air17-about-splitimage li { display: flex; gap: 10px; font-size: 15px; }
.air17-about-splitimage li::before { content: "✓"; color: var(--dna-accent, #2f6b3a); font-weight: 800; }

/* ---- faq ---- */
.air17-ask { background: var(--dna-bg, #f4f7f2); padding: var(--section-pad) 0; }
.air17-ask .list { display: grid; gap: 10px; max-width: 780px; }
.air17-ask details {
  background: var(--dna-surface, #fff);
  border: 1px solid var(--dna-line, #c9d6cc);
  border-radius: 12px; padding: 14px 18px;
}
.air17-ask summary {
  font-weight: 700; cursor: pointer; font-family: var(--dna-font-display);
  font-size: 17px;
}
.air17-ask details p { margin: 10px 0 4px; }

/* ---- gallery louver ---- */
.air17-louvergrid { background: var(--dna-surface, #fff); padding: var(--section-pad) 0; }
.air17-louvergrid .shots {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; margin-top: 28px;
}
.air17-louvergrid figure {
  margin: 0; overflow: hidden; border-radius: 14px;
  border: 1px solid var(--dna-line, #c9d6cc); position: relative;
}
.air17-louvergrid img { width: 100%; height: 100%; object-fit: cover; min-height: 240px; }
.air17-louvergrid figcaption {
  position: absolute; left: 12px; bottom: 12px;
  background: color-mix(in srgb, var(--dna-ink) 78%, transparent);
  color: #fff; font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  padding: 6px 10px; border-radius: 4px; font-weight: 700;
}

/* ---- comparison fork ---- */
.air17-fork { background: var(--dna-surface-2, #e7eee8); padding: var(--section-pad) 0; }
.air17-fork .pair {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 28px;
}
.air17-fork .col {
  background: var(--dna-surface, #fff);
  border: 1px solid var(--dna-line, #c9d6cc);
  border-radius: 16px; padding: 26px 22px;
}
.air17-fork .col h3 { font-size: 20px; }
.air17-fork .col.keep { border-top: 5px solid var(--dna-accent, #2f6b3a); }
.air17-fork .col.swap { border-top: 5px solid var(--dna-ink, #1c2a22); }

/* ---- services numbered ---- */
.air17-svc { background: var(--dna-bg, #f4f7f2); padding: var(--section-pad) 0; }
.air17-svc-numbered .list { display: grid; }
.air17-svc-numbered .row {
  display: grid; grid-template-columns: 88px 1fr; gap: 24px;
  padding: 26px 0; border-top: 1px solid var(--dna-line, #c9d6cc);
}
html.dna-svc-accordion .air17-svc-numbered .service-item {
  padding: 26px 0;
  overflow: visible;
  border-radius: 0;
}
html.dna-svc-accordion .air17-svc-numbered .service-item h3 {
  cursor: default;
  display: block;
  padding: 0;
  margin: 0 0 6px;
}
html.dna-svc-accordion .air17-svc-numbered .service-item h3::after { content: none; }
.air17-svc-numbered .row:last-child { border-bottom: 1px solid var(--dna-line, #c9d6cc); }
.air17-svc-numbered .num {
  font-size: 42px; font-weight: 800; line-height: 1;
  color: var(--dna-accent, #2f6b3a); opacity: .5;
  font-family: var(--dna-font-display);
}
.air17-svc-numbered h3 { font-size: 20px; }
.air17-svc-numbered p { max-width: 640px; }

/* ---- cta boxed ---- */
.air17-cta { padding: 76px 0; background: var(--dna-bg, #f4f7f2); }
.air17-cta-boxed .box {
  background: var(--dna-surface, #fff);
  border: 1px solid var(--dna-line, #c9d6cc);
  border-radius: 20px; padding: 40px;
  box-shadow: 0 28px 70px -42px rgba(20, 40, 30, .4);
}
.air17-cta-boxed h2 { font-size: 30px; }
.air17-cta-boxed .air17-cta-grid {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 28px; align-items: start;
}

/* ---- booking: charge-sheet sidebar ---- */
.air17-charge[data-booking-form] {
  display: grid; grid-template-columns: 220px 1fr; min-height: 320px;
  border: 1px solid var(--dna-line, #c9d6cc);
  border-radius: 16px; overflow: hidden;
  background: var(--dna-surface, #fff);
}
.air17-rail {
  background: var(--dna-ink, #1c2a22);
  color: #e7eee8;
  padding: 22px 18px;
}
.air17-rail .kicker {
  font-size: 11px; letter-spacing: .16em; text-transform: uppercase;
  opacity: .7; margin: 0 0 10px;
}
.air17-rail h3 { color: #fff; font-size: 18px; }
.air17-rail button {
  display: block; width: 100%; text-align: left;
  background: transparent; color: #d5e3d8;
  border: 1px solid color-mix(in srgb, #fff 18%, transparent);
  border-radius: 8px; padding: 10px 12px; margin-top: 8px;
  cursor: pointer; font: inherit; font-weight: 650;
}
.air17-rail button.is-on {
  background: var(--dna-accent, #2f6b3a);
  border-color: transparent; color: #fff;
}
.air17-pad { padding: 26px 24px; }
.air17-pad label { display: block; font-weight: 700; font-size: 13px; margin-bottom: 6px; }
.air17-pad input[type="tel"] {
  width: 100%; padding: 14px 14px;
  border: 1.5px solid var(--dna-line, #c9d6cc);
  border-radius: 8px; font: inherit; font-size: 16px;
  background: var(--dna-surface-2, #e7eee8);
}
.air17-pad input[type="tel"]:focus {
  outline: 2px solid var(--dna-accent, #2f6b3a); border-color: transparent;
}
.air17-err { color: #9b2c2c; font-size: 13px; display: none; }
.air17-err.show { display: block; }
.air17-acts { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.air17-thanks {
  background: color-mix(in srgb, var(--dna-accent) 10%, #fff);
  border: 1px dashed var(--dna-accent, #2f6b3a);
  border-radius: 12px; padding: 22px;
}
.air17-thanks span {
  display: inline-block; font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; font-weight: 800; color: var(--dna-accent, #2f6b3a);
}
.air17-thanks b { display: block; font-size: 22px; margin: 8px 0 8px; }

/* ---- contact page ---- */
.air17-pagehead { padding: 48px 0 12px; }
.air17-pagehead h1 { font-size: 36px; }
.contact-page { padding-bottom: 64px; }
.contact-info {
  background: var(--dna-surface, #fff);
  border: 1px solid var(--dna-line, #c9d6cc);
  border-radius: 14px; padding: 22px;
  display: grid; gap: 8px;
}
.contact-info h2 { font-size: 20px; }
.air17-prose { max-width: 720px; }
.air17-prose h2 { font-size: 22px; margin-top: 1.4em; }

/* ---- footer minimal ---- */
.air17-foot {
  border-top: 1px solid var(--dna-line, #c9d6cc);
  padding: 28px 0 36px;
  background: var(--dna-surface, #fff);
}
.air17-foot-inner {
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 14px;
}
.air17-foot .brand-name { font-weight: 800; color: var(--dna-ink); margin-bottom: 4px; }
.air17-foot-links { display: flex; gap: 16px; flex-wrap: wrap; }

.air17-svcpage .card-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 28px;
}
.air17-svcpage .service-card,
html.dna-svc-accordion .air17-svcpage .service-item {
  background: var(--dna-surface, #fff);
  border: 1px solid var(--dna-line, #c9d6cc);
  border-radius: 14px; padding: 22px;
  overflow: visible;
}
html.dna-svc-accordion .air17-svcpage .service-item h3::after { content: none; }
.air17-svcpage .service-card img {
  width: 100%; height: 180px; object-fit: cover; border-radius: 10px; margin-bottom: 12px;
}

[data-reveal] { opacity: 0; transform: translateY(10px); transition: .45s ease; }
[data-reveal].in { opacity: 1; transform: none; }

@media (max-width: 860px) {
  .air17-mast-row { grid-template-columns: auto 1fr auto; }
  .air17-nav, .nav-cta { display: none; }
  .air17-burger { display: inline-block; }
  .air17-hero-overlay { min-height: 480px; }
  .air17-hero-overlay h1 { font-size: 28px; }
  .air17-proc-zigzag .step,
  .air17-about-splitimage .grid,
  .air17-louvergrid .shots,
  .air17-fork .pair,
  .air17-cta-boxed .air17-cta-grid,
  .air17-charge[data-booking-form],
  .air17-svcpage .card-grid { grid-template-columns: 1fr; }
  .air17-proc-zigzag .step:nth-child(even) .vis { order: 0; }
  .air17-svc-numbered .row { grid-template-columns: 56px 1fr; }
}