:root {
  --sand: #d9c6a5;
  --sand-deep: #b99a6b;
  --sand-pale: #f0e7d6;
  --paper: #faf7f1;
  --slate: #232c33;
  --slate-mid: #3a464f;
  --slate-soft: #6d7b85;
  --sky: #3f8fb8;
  --sky-deep: #2b6b8f;
  --sky-pale: #e2eff5;
  --ink: #1b2228;
  --rule: rgba(35, 44, 51, 0.22);
  --rule-strong: rgba(35, 44, 51, 0.5);
  --shadow-flat: 0 1px 0 var(--rule);
  --shadow-lift: 0 18px 40px -28px rgba(27, 34, 40, 0.55);
  --shell: 1200px;
  --gap: clamp(1.25rem, 3vw, 2.25rem);
  --band: clamp(3.5rem, 7vw, 6.5rem);
  --radius: 3px;
  --sans: "Barlow", system-ui, -apple-system, "Segoe UI", sans-serif;
  --cond: "Barlow Condensed", "Barlow", system-ui, sans-serif;
  --mono: "Space Mono", "Courier New", monospace;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.25rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--slate);
  font-family: var(--sans);
  font-size: clamp(1rem, 0.97rem + 0.16vw, 1.075rem);
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3 {
  font-family: var(--cond);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0 0 0.5em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.15rem, 1.5rem + 3.4vw, 4rem); }
h2 { font-size: clamp(1.75rem, 1.3rem + 2.2vw, 2.9rem); }
h3 { font-size: clamp(1.12rem, 1.02rem + 0.5vw, 1.4rem); }

p { margin: 0 0 1.05em; }

a { color: var(--sky-deep); }

:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 3px;
  border-radius: 2px;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1.1rem;
  z-index: 200;
}
.skip-link:focus { left: 0; }

.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--sky-deep);
  margin: 0 0 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.eyebrow::before {
  content: "";
  width: 1.85rem;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.lede {
  font-size: clamp(1.05rem, 1rem + 0.35vw, 1.22rem);
  color: var(--slate-mid);
  max-width: 46ch;
}

.section-head {
  max-width: 62ch;
  margin-bottom: clamp(2rem, 4vw, 3.25rem);
}
.section-lede { color: var(--slate-mid); }

.btn {
  --btn-bg: var(--slate);
  --btn-fg: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.82rem 1.5rem;
  border: 1px solid var(--btn-bg);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1.2;
  text-decoration: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-sm { padding: 0.6rem 1.05rem; font-size: 0.9rem; }
.btn-block { width: 100%; }
.btn-sky { --btn-bg: var(--sky); --btn-fg: #fff; }
.btn-sky:hover { --btn-bg: var(--sky-deep); }
.btn-ink { --btn-bg: var(--ink); --btn-fg: var(--sand-pale); }
.btn-ink:hover { --btn-bg: #000; }
.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--paper);
  border-color: rgba(250, 247, 241, 0.6);
}
.btn-ghost:hover { --btn-bg: rgba(250, 247, 241, 0.14); }

.frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--sand-pale);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.frame-tall { aspect-ratio: 4 / 5; }
.frame:hover img { transform: scale(1.035); }
figure { margin: 0; }
figcaption {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--slate-soft);
  margin-top: 0.6rem;
  text-transform: none;
}

.ticks {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.ticks li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.97rem;
  color: var(--slate-mid);
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.85rem;
  height: 1px;
  background: var(--sky);
}

/* header */
.site-head {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 241, 0.92);
  backdrop-filter: blur(9px);
  border-bottom: 1px solid var(--rule);
}
.site-head.is-stuck { box-shadow: 0 10px 26px -24px rgba(27, 34, 40, 0.7); }

.head-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}
.brand-mark {
  width: 2.15rem;
  height: 2.15rem;
  color: var(--sky-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.32rem;
  background: var(--sand-pale);
}
.brand-mark svg { width: 100%; height: 100%; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong {
  font-family: var(--cond);
  font-size: 1.32rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.brand-text em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate-soft);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.15rem;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.8rem;
  background: none;
  border: 0;
  border-radius: var(--radius);
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--slate);
  text-decoration: none;
  cursor: pointer;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.nav-link:hover { color: var(--sky-deep); background: var(--sky-pale); }
.nav-link .bi { font-size: 0.7rem; transition: transform 0.2s var(--ease); }
.has-sub { position: relative; }
.has-sub.is-open .nav-sub-btn .bi { transform: rotate(180deg); }

.sub-menu {
  list-style: none;
  margin: 0;
  padding: 0.4rem;
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  min-width: 13rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--sky);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  display: none;
}
.has-sub.is-open .sub-menu { display: block; }
.sub-menu a {
  display: block;
  padding: 0.5rem 0.7rem;
  font-size: 0.92rem;
  color: var(--slate);
  text-decoration: none;
  border-radius: 2px;
}
.sub-menu a:hover { background: var(--sky-pale); color: var(--sky-deep); }

.nav-cta-wrap { margin-left: 0.5rem; }

.burger {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 0.7rem 0.6rem;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
}
.burger-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--slate);
  transition: transform 0.25s var(--ease), opacity 0.18s var(--ease);
}
.burger.is-open .burger-bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger.is-open .burger-bar:nth-child(2) { opacity: 0; }
.burger.is-open .burger-bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* hero */
.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(3.5rem, 8vw, 7rem);
  background: var(--slate);
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(27, 34, 40, 0.86) 0%, rgba(27, 34, 40, 0.72) 45%, rgba(27, 34, 40, 0.92) 100%),
    linear-gradient(90deg, rgba(27, 34, 40, 0.9) 0%, rgba(27, 34, 40, 0.25) 70%);
}
.hero-copy {
  color: var(--sand-pale);
  max-width: 34rem;
}
.hero-copy h1 { color: #fff; }
.hero-copy .eyebrow { color: var(--sand); }
.hero-copy .lede { color: rgba(240, 231, 214, 0.86); }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}

.service-panel {
  background: rgba(250, 247, 241, 0.97);
  border: 1px solid var(--rule);
  border-top: 4px solid var(--sky);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.5vw, 1.85rem);
  box-shadow: var(--shadow-lift);
}
.panel-tag {
  color: var(--slate-soft);
  margin: 0 0 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule);
}
.panel-list {
  list-style: none;
  margin: 0 0 1.35rem;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}
.panel-list li {
  display: grid;
  grid-template-columns: 1.25rem 1fr;
  gap: 0.55rem;
  font-size: 0.93rem;
  line-height: 1.5;
  color: var(--slate-mid);
}
.panel-list .bi { color: var(--sky-deep); font-size: 1rem; margin-top: 0.15rem; }
.panel-note { color: var(--slate-soft); margin: 0.75rem 0 0; }

/* rooms / plans */
.rooms { background: var(--sand-pale); padding-block: var(--band); }

.room-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.room-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.room-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.room-body { padding: clamp(1.25rem, 2.5vw, 1.9rem); flex: 1; display: flex; flex-direction: column; }
.room-body h3 {
  font-family: var(--mono);
  font-size: 0.98rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}
.room-fix {
  margin: auto 0 0;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--rule-strong);
  font-size: 0.9rem;
  color: var(--slate-soft);
}
.room-fix .mono { color: var(--sky-deep); }

.plan {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(var(--rule) 1px, transparent 1px) 0 0 / 100% 12.5%,
    linear-gradient(90deg, var(--rule) 1px, transparent 1px) 0 0 / 12.5% 100%,
    var(--sand);
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
}
.plan::before {
  content: "";
  position: absolute;
  inset: 7% 8%;
  border: 1.5px solid var(--slate);
  pointer-events: none;
}
.plan-wall-ext {
  position: absolute;
  inset: 7% 8%;
  border: 1.5px solid var(--slate);
}
.plan-wall-in {
  position: absolute;
  left: 8%;
  right: 52%;
  bottom: 26%;
  height: 1.5px;
  background: var(--slate);
}
.plan-wall-in::after {
  content: "";
  position: absolute;
  left: 46%;
  top: -0.75rem;
  width: 1.5px;
  height: 0.75rem;
  background: var(--slate);
}
.plan-win {
  position: absolute;
  top: calc(var(--win-top, 0) + 6.1%);
  left: var(--win-left, 22%);
  width: var(--win-w, 26%);
  height: 9px;
  background:
    linear-gradient(var(--paper), var(--paper)) center / 100% 2px no-repeat,
    repeating-linear-gradient(90deg, var(--slate) 0 3px, transparent 3px 7px);
  border-top: 1.5px solid var(--slate);
  border-bottom: 1.5px solid var(--slate);
}
.plan-win-wide { top: 6.1%; }
.plan-door {
  position: absolute;
  left: 30%;
  bottom: 25%;
  width: 3.2rem;
  height: 3.2rem;
  border-left: 1.5px solid var(--slate);
  border-bottom: 1.5px solid var(--slate);
  border-bottom-left-radius: 3.2rem;
}
.plan-door i {
  position: absolute;
  left: -0.75px;
  bottom: -0.75px;
  width: 3.2rem;
  height: 1.5px;
  background: var(--slate);
  transform-origin: left bottom;
  transform: rotate(-62deg);
}
.plan-vent {
  position: absolute;
  width: 2.5rem;
  height: 0.85rem;
  border: 1.5px solid var(--slate);
  background:
    repeating-linear-gradient(90deg, var(--slate) 0 1px, transparent 1px 6px),
    var(--paper);
}
.plan-vent-small {
  left: auto;
  right: 14%;
  top: 16%;
  width: 1.5rem;
}
.plan-vent-blocked::after {
  content: "";
  position: absolute;
  inset: -0.4rem -0.5rem;
  background:
    linear-gradient(45deg, transparent 45%, var(--sky-deep) 45%, var(--sky-deep) 55%, transparent 55%),
    linear-gradient(-45deg, transparent 45%, var(--sky-deep) 45%, var(--sky-deep) 55%, transparent 55%);
  opacity: 0.75;
}
.plan-vent-blocked { right: 24%; top: 15%; }
.plan-ret {
  position: absolute;
  right: 10%;
  bottom: 11%;
  left: var(--ret-left, auto);
  width: 3.4rem;
  height: 0.6rem;
  border: 1.5px solid var(--slate);
  background: repeating-linear-gradient(90deg, var(--slate) 0 1px, transparent 1px 5px), var(--paper);
}
.plan-furn {
  position: absolute;
  border: 1.5px solid var(--slate-mid);
  background: rgba(250, 247, 241, 0.55);
}
.plan-furn-bed {
  right: 10%;
  top: 40%;
  width: 26%;
  height: 34%;
  display: grid;
  grid-template-rows: 34% 1fr;
  gap: 2px;
  padding: 2px;
}
.plan-furn-bed i { border: 1px solid var(--slate-soft); }
.plan-furn-sofa {
  left: 12%;
  bottom: 12%;
  width: 40%;
  height: 20%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  padding: 2px;
}
.plan-furn-sofa i { border: 1px solid var(--slate-soft); }
.plan-furn-table {
  left: 22%;
  bottom: 40%;
  width: 20%;
  height: 14%;
  border-radius: 50%;
}
.plan-furn-counter {
  right: 10%;
  bottom: 12%;
  width: 44%;
  height: 14%;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  padding: 2px;
}
.plan-furn-counter i { border: 1px solid var(--slate-soft); }
.plan-heat {
  position: absolute;
  right: 20%;
  bottom: 26%;
  width: 2.6rem;
  height: 2.6rem;
  border: 1.5px solid var(--sky-deep);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(63, 143, 184, 0.28) 40%, transparent 42%);
}
.plan-heat::after {
  content: "";
  position: absolute;
  inset: 32%;
  border: 1.5px solid var(--sky-deep);
  border-radius: 50%;
}
.plan-duct {
  position: absolute;
  left: var(--duct-left, 62%);
  top: 7%;
  width: var(--duct-w, 14%);
  height: 30%;
  border: 1.5px solid var(--slate);
  background: repeating-linear-gradient(45deg, var(--rule-strong) 0 2px, transparent 2px 7px), var(--paper);
}
.plan-hatch {
  position: absolute;
  right: 12%;
  bottom: 10%;
  width: 4.2rem;
  height: 3rem;
  border: 1.5px dashed var(--slate);
  background: var(--paper);
}
.plan-unit {
  position: absolute;
  border: 1.5px solid var(--slate);
  background: var(--paper);
  display: grid;
  place-items: center;
}
.plan-unit i {
  width: 62%;
  height: 62%;
  border: 1px solid var(--slate-soft);
  background: repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 5px);
}
.plan-unit-ahu { left: 12%; top: 12%; width: 22%; height: 26%; }
.plan-unit-furnace { left: 12%; top: 44%; width: 22%; height: 26%; }
.plan-trunk {
  position: absolute;
  left: var(--trunk-left, 56%);
  top: var(--trunk-top, 18%);
  width: 30%;
  height: 8%;
  border: 1.5px solid var(--slate);
  background: var(--paper);
}
.plan-trunk::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -2.1rem;
  width: 1.5px;
  height: 2rem;
  background: var(--slate);
}
.plan-cond {
  position: absolute;
  left: 20%;
  top: 70%;
  width: 26%;
  height: 1.5px;
  background: var(--sky-deep);
}
.plan-cond::after {
  content: "";
  position: absolute;
  left: 0;
  top: -0.4rem;
  width: 1rem;
  height: 1rem;
  border: 1.5px solid var(--sky-deep);
  border-radius: 50%;
}
.plan-tag {
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  color: var(--slate);
  background: rgba(250, 247, 241, 0.85);
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--rule);
}
.plan-note {
  position: absolute;
  bottom: 0.9rem;
  right: 1rem;
  color: var(--sky-deep);
  background: rgba(250, 247, 241, 0.9);
  padding: 0.2rem 0.45rem;
  border-bottom: 2px solid var(--sky);
}

.plan-legend {
  margin-top: var(--gap);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  padding: 0.9rem 1.1rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.legend-title { color: var(--slate-soft); }
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.86rem;
  color: var(--slate-mid);
}
.legend-sym { display: inline-block; position: relative; }
.legend-sym-vent {
  width: 1.9rem;
  height: 0.65rem;
  border: 1.5px solid var(--slate);
  background: repeating-linear-gradient(90deg, var(--slate) 0 1px, transparent 1px 5px);
}
.legend-sym-ret {
  width: 2.1rem;
  height: 0.5rem;
  border: 1.5px solid var(--slate);
  background: repeating-linear-gradient(90deg, var(--slate) 0 1px, transparent 1px 4px);
}
.legend-sym-win {
  width: 2.1rem;
  height: 0.6rem;
  border-top: 1.5px solid var(--slate);
  border-bottom: 1.5px solid var(--slate);
  background: repeating-linear-gradient(90deg, var(--slate) 0 2px, transparent 2px 5px);
}
.legend-sym-door {
  width: 1.2rem;
  height: 1.2rem;
  border-left: 1.5px solid var(--slate);
  border-bottom: 1.5px solid var(--slate);
  border-bottom-left-radius: 1.2rem;
}
.legend-sym-heat {
  width: 0.85rem;
  height: 0.85rem;
  border: 1.5px solid var(--sky-deep);
  border-radius: 50%;
}

/* split sections */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  padding-block: var(--band);
}
.split-rev .split-body { order: -1; }
.split-media { display: grid; gap: 1rem; }
.split-body > p { color: var(--slate-mid); }
.split-body .btn { margin-top: 0.4rem; }

.ac { background: var(--paper); }
.heating { background: var(--sand-pale); }
.heating .frame { background: var(--sand); }

.service-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}
.service-list h3 {
  margin: 0 0 0.25rem;
  font-size: 1.16rem;
}
.service-list h3::before {
  content: "";
  display: inline-block;
  width: 1.4rem;
  height: 1px;
  background: var(--sky);
  vertical-align: 0.32em;
  margin-right: 0.55rem;
}
.service-list p { margin: 0; font-size: 0.97rem; color: var(--slate-mid); }

/* ductwork */
.ductwork { background: var(--paper); padding-block: var(--band); }
.duct-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-bottom: var(--gap);
}
.duct-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap) clamp(1.5rem, 4vw, 3rem);
}
.duct-cols h3 {
  font-size: 1.1rem;
  padding-bottom: 0.45rem;
  border-bottom: 2px solid var(--sand-deep);
  margin-bottom: 0.7rem;
}
.duct-cols p { margin: 0; color: var(--slate-mid); font-size: 0.97rem; }

/* thermostat */
.thermostat { background: var(--sky-pale); padding-block: var(--band); }
.thermostat .split-body { display: grid; gap: 1.5rem; align-content: start; }

.dial-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 4px solid var(--sand-deep);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.5vw, 1.8rem);
}
.dial {
  display: grid;
  place-items: center;
  padding: 1rem 0 1.25rem;
}
.dial-face {
  position: relative;
  width: clamp(9.5rem, 26vw, 12rem);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid var(--slate);
  background: var(--sand-pale);
  display: grid;
  place-items: center;
  transition: background 0.15s linear;
}
.dial-face::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--rule);
}
.dial-arc {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 2;
  background: conic-gradient(from 210deg, var(--sky) 0turn var(--turn, 0.05turn), rgba(35, 44, 51, 0.1) var(--turn, 0.05turn) 0.75turn, transparent 0.75turn);
  -webkit-mask: radial-gradient(circle, transparent 0 66%, #000 68% 100%);
  mask: radial-gradient(circle, transparent 0 66%, #000 68% 100%);
}
.dial-value {
  position: relative;
  z-index: 3;
  font-family: var(--cond);
  font-size: clamp(2.4rem, 8vw, 3.4rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
}
.dial-unit {
  position: absolute;
  z-index: 3;
  bottom: 22%;
  color: var(--slate-soft);
}
.dial-slider-label { color: var(--slate-soft); display: block; margin-bottom: 0.4rem; }
.dial-range {
  width: 100%;
  accent-color: var(--sky);
  height: 1.75rem;
}
.dial-read {
  margin: 0.5rem 0 0.75rem;
  color: var(--sky-deep);
  border-top: 1px dashed var(--rule-strong);
  padding-top: 0.6rem;
}
.dial-hint { margin: 0; font-size: 0.88rem; color: var(--slate-soft); }

/* maintenance */
.maintenance { background: var(--paper); padding-block: var(--band); }
.maint-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
  margin-bottom: var(--gap);
}
.maint-card {
  background: var(--sand-pale);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1.25rem 1.15rem 1.4rem;
}
.maint-step {
  display: inline-block;
  background: var(--slate);
  color: var(--sand-pale);
  padding: 0.25rem 0.55rem;
  border-radius: 2px;
  margin-bottom: 0.7rem;
}
.maint-card h3 { font-size: 1.1rem; }
.maint-card .ticks li { font-size: 0.9rem; }

.maint-media {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

/* equipment */
.equipment { background: var(--slate); padding-block: var(--band); }
.equipment h2, .equipment .section-lede { color: var(--sand-pale); }
.equipment .section-lede { color: rgba(240, 231, 214, 0.78); }
.equipment .eyebrow { color: var(--sand); }
.gal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
}
.gal-item .frame {
  border-color: rgba(240, 231, 214, 0.24);
  background: #2c363e;
}
.gal-item figcaption { color: rgba(240, 231, 214, 0.74); }
.gal-item .mono {
  display: inline-block;
  color: var(--sand);
  letter-spacing: 0.12em;
  margin-bottom: 0.2rem;
}

/* cta */
.cta {
  position: relative;
  isolation: isolate;
  padding-block: var(--band);
  background: var(--slate);
}
.cta-media { position: absolute; inset: 0; z-index: -1; }
.cta-media img { width: 100%; height: 100%; object-fit: cover; }
.cta::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(27, 34, 40, 0.92), rgba(27, 34, 40, 0.82));
}
.cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 26rem);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}
.cta-copy { color: var(--sand-pale); }
.cta-copy h2 { color: #fff; }
.cta-copy .eyebrow { color: var(--sand); }
.cta-ticks li { color: rgba(240, 231, 214, 0.82); }
.cta-alt { margin: 1rem 0 0; color: rgba(240, 231, 214, 0.7); }
.cta-alt a { color: var(--sand); }

.req-form {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 4px solid var(--sky);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.5vw, 1.85rem);
  display: grid;
  gap: 0.9rem;
}
.form-title {
  margin: 0 0 0.2rem;
  font-size: 1.3rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}
.field { display: grid; gap: 0.3rem; }
.field label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--slate-soft);
}
.field input,
.field select,
.field textarea {
  font-family: var(--sans);
  font-size: 0.98rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  padding: 0.65rem 0.7rem;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 5rem; }
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible { border-color: var(--sky); }
.err {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: #9c3227;
  min-height: 0;
}
.field.is-bad input,
.field.is-bad select { border-color: #9c3227; }
.form-status { margin: 0; min-height: 1rem; color: var(--sky-deep); }
.form-status.is-ok { color: #2c6b3f; }

/* footer */
.site-foot {
  background: var(--ink);
  color: rgba(240, 231, 214, 0.72);
  padding-top: clamp(2.5rem, 5vw, 4rem);
}
.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  padding-bottom: 2.5rem;
}
.brand-foot { color: var(--sand-pale); }
.brand-foot .brand-text em { color: rgba(240, 231, 214, 0.55); }
.foot-h { color: var(--sand); margin-bottom: 0.85rem; }
.foot-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.foot-list a {
  color: rgba(240, 231, 214, 0.78);
  text-decoration: none;
  font-size: 0.95rem;
}
.foot-list a:hover { color: var(--sand); text-decoration: underline; }
.foot-note { font-size: 0.92rem; margin: 0 0 0.6rem; }
.foot-note a { color: var(--sand); }
.foot-base {
  border-top: 1px solid rgba(240, 231, 214, 0.16);
  padding-block: 1.1rem;
}
.foot-base p { margin: 0; color: rgba(240, 231, 214, 0.5); letter-spacing: 0.08em; }

/* reveal */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .service-panel { max-width: 34rem; }
  .maint-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; }
  .split-rev .split-body { order: 0; }
  .room-grid { grid-template-columns: 1fr; }
  .duct-grid { grid-template-columns: 1fr; }
  .duct-cols { grid-template-columns: 1fr; }
  .gal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-inner { grid-template-columns: 1fr; }
  .maint-media { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .burger { display: flex; }
  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    box-shadow: var(--shadow-lift);
    display: none;
    max-height: calc(100vh - 4.25rem);
    overflow-y: auto;
  }
  .primary-nav.is-open { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem clamp(1rem, 4vw, 2.5rem) 1rem;
  }
  .nav-list > li { border-bottom: 1px solid var(--rule); }
  .nav-link { width: 100%; justify-content: space-between; padding: 0.85rem 0.4rem; }
  .sub-menu {
    position: static;
    display: none;
    border: 0;
    border-left: 2px solid var(--sky);
    border-radius: 0;
    box-shadow: none;
    background: var(--sand-pale);
    margin: 0 0 0.5rem;
    min-width: 0;
  }
  .has-sub.is-open .sub-menu { display: block; }
  .nav-cta-wrap { margin: 0.9rem 0 0; border-bottom: 0 !important; }
  .nav-cta-wrap .btn { width: 100%; }
}

@media (max-width: 560px) {
  .maint-grid { grid-template-columns: 1fr; }
  .gal-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .plan-furn-sofa { width: 48%; }
  .plan-note { font-size: 0.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}