@font-face {
  font-family: "Barlow";
  src: url("./assets/Barlow-Regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Barlow";
  src: url("./assets/Barlow-SemiBold.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Barlow Condensed";
  src: url("./assets/BarlowCondensed-Bold.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  color-scheme: light;
  --blue-950: oklch(24% 0.055 153);
  --blue-800: oklch(36% 0.11 153);
  --blue-700: oklch(46% 0.145 151);
  --blue-600: oklch(53% 0.15 150);
  --blue-100: oklch(93% 0.04 151);
  --blue-050: oklch(98% 0.012 151);
  --ink: oklch(22% 0.025 150);
  --muted: oklch(45% 0.03 150);
  --line: oklch(87% 0.025 151);
  --yellow: oklch(82% 0.17 149);
  --green: oklch(50% 0.15 151);
  --white: #fff;
  --shell: min(1180px, calc(100% - 3rem));
  --radius: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--white);
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--white);
  font-family: "Barlow", "Arial Narrow", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img { max-width: 100%; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .75rem 1rem;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 92px;
  padding: 0 max(1.5rem, calc((100vw - 1180px) / 2));
  color: var(--ink);
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.ao-brand { display: inline-flex; width: fit-content; }
.ao-brand img {
  display: block;
  width: 212px;
  height: 62px;
  object-fit: contain;
  object-position: left center;
}

.authorization-lockup {
  display: flex;
  align-items: center;
  gap: .75rem;
  min-height: 54px;
  padding: .45rem .8rem .45rem 1rem;
  color: var(--white);
  background: var(--blue-950);
}
.authorization-lockup span {
  max-width: 74px;
  font-size: .66rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.authorization-lockup img {
  width: 118px;
  height: 34px;
  object-fit: contain;
}

.site-header nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1.35rem;
}
.site-header nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-size: .86rem;
  font-weight: 600;
  text-decoration: none;
}
.site-header nav a:hover { color: var(--blue-700); }
.site-header .header-cta {
  padding: 0 1rem;
  border-radius: 8px;
  background: var(--blue-700);
  color: var(--white);
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(460px, 1.08fr);
  min-height: 720px;
  overflow: hidden;
  color: var(--white);
  background: var(--blue-800);
}
.hero::before {
  content: "BENGALURU  /  12.9716° N";
  position: absolute;
  z-index: -1;
  left: max(1.5rem, calc((100vw - 1180px) / 2));
  bottom: 1.2rem;
  color: rgb(255 255 255 / .25);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .16em;
}
.hero-copy {
  position: relative;
  z-index: 4;
  align-self: center;
  width: min(650px, 100%);
  padding: 5rem 2rem 7rem max(1.5rem, calc((100vw - 1180px) / 2));
}
.hero-kicker {
  display: flex;
  gap: .65rem;
  align-items: center;
  width: fit-content;
  margin: 0 0 1.5rem;
  padding: .35rem .45rem .35rem 0;
  border-bottom: 1px solid rgb(255 255 255 / .35);
  color: rgb(255 255 255 / .76);
  font-size: .82rem;
  font-weight: 600;
}
.hero-kicker span { padding: .25rem .45rem; color: var(--blue-950); background: var(--yellow); }
.hero h1 {
  max-width: 9ch;
  margin: 0;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: clamp(4.2rem, 7.2vw, 6rem);
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: .82;
  text-transform: uppercase;
}
.hero h1 em { color: var(--yellow); font-style: normal; }
.hero-copy > p:not(.hero-kicker, .hero-note) {
  max-width: 39ch;
  margin: 1.8rem 0 0;
  color: rgb(255 255 255 / .86);
  font-size: clamp(1.05rem, 1.35vw, 1.25rem);
  line-height: 1.55;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: .8rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 600;
  line-height: 1.1;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease);
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button-white { background: var(--white); color: var(--blue-950); }
.button-white:hover { background: var(--blue-050); }
.button-outline { border-color: rgb(255 255 255 / .5); color: var(--white); }
.button-outline:hover { background: rgb(255 255 255 / .1); }
.hero-note { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.1rem 0 0; color: rgb(255 255 255 / .68); font-size: .84rem; }
.hero-note span { color: var(--white); font-weight: 600; }

.hero-products {
  position: relative;
  align-self: stretch;
  min-height: 640px;
  overflow: hidden;
  background: oklch(54% .15 151);
  border-left: 1px solid rgb(255 255 255 / .18);
}
.product-stage { position: absolute; inset: 2.5rem max(1.5rem, calc((100vw - 1180px) / 2)) 6.5rem 1.5rem; }
.stage-rings {
  position: absolute;
  left: 49%;
  top: 48%;
  width: min(55vw, 620px);
  aspect-ratio: 1;
  border: 1px solid rgb(255 255 255 / .18);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 5rem rgb(255 255 255 / .035), 0 0 0 10rem rgb(255 255 255 / .025);
}
.carousel-slides,
.carousel-slide { position: absolute; inset: 0; }
.carousel-slide {
  opacity: 0;
  pointer-events: none;
  transform: translateX(5%);
  transition: opacity 280ms var(--ease), transform 420ms var(--ease);
}
.carousel-slide.is-active { opacity: 1; pointer-events: auto; transform: translateX(0); }
.carousel-product {
  position: absolute;
  z-index: 2;
  left: 50%;
  object-fit: contain;
  filter: drop-shadow(0 28px 20px rgb(0 35 90 / .32));
  transform: translateX(-50%);
}
.slide-hpw .carousel-product { top: 15%; width: 82%; height: 56%; }
.slide-hpi .carousel-product { top: 5%; width: 48%; height: 72%; }
.slide-hpa .carousel-product { top: 1%; width: 82%; height: 80%; }
.slide-system {
  position: absolute;
  z-index: 3;
  left: 0;
  bottom: 1rem;
  display: grid;
  max-width: 240px;
  padding: .8rem 1rem;
  color: var(--blue-950);
  background: var(--yellow);
}
.slide-system span { font-size: .72rem; }
.slide-system strong { font-family: "Barlow Condensed", sans-serif; font-size: 2rem; line-height: 1; text-transform: uppercase; }
.slide-system p { margin: .3rem 0 0; font-size: .78rem; line-height: 1.3; }
.carousel-arrow {
  position: absolute;
  z-index: 5;
  top: 48%;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgb(255 255 255 / .45);
  border-radius: 50%;
  color: var(--blue-950);
  background: var(--yellow);
  font-size: 1.35rem;
  cursor: pointer;
  transform: translateY(-50%);
}
.carousel-arrow:hover { background: var(--white); }
.carousel-previous { left: .5rem; }
.carousel-next { right: .5rem; }
.stage-floor { position: absolute; left: 0; right: 0; bottom: 8%; height: 1px; background: rgb(255 255 255 / .42); }
.hero-range-strip {
  position: absolute;
  z-index: 4;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  min-height: 82px;
  background: var(--blue-950);
}
.hero-range-strip button {
  display: grid;
  align-content: center;
  padding: .75rem 1rem;
  border: 0;
  color: rgb(255 255 255 / .58);
  background: transparent;
  text-align: left;
  cursor: pointer;
}
.hero-range-strip button + button { border-left: 1px solid rgb(255 255 255 / .16); }
.hero-range-strip button.is-active { color: var(--blue-950); background: var(--yellow); }
.hero-range-strip b { color: var(--white); font-family: "Barlow Condensed", sans-serif; font-size: 1.35rem; }
.hero-range-strip button.is-active b { color: var(--blue-950); }
.hero-range-strip span { font-size: .72rem; }

.trust-band {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 2rem;
  align-items: center;
  width: var(--shell);
  margin: 0 auto;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}
.trust-brand { display: flex; align-items: center; gap: 1rem; }
.trust-brand img { width: 105px; }
.trust-brand p { margin: 0; font-size: .88rem; }
.trust-facts { overflow: hidden; color: var(--muted); font-size: .8rem; font-weight: 600; }
.trust-facts-track { display: flex; justify-content: flex-end; gap: 1rem; }
.trust-facts-track span + span { padding-left: 1rem; border-left: 1px solid var(--line); }
.trust-facts-track > [aria-hidden="true"] { display: none; }

.section-shell { width: var(--shell); margin: 0 auto; padding: 7rem 0; }
.section-label { margin: 0 0 .8rem; color: var(--blue-700); font-weight: 600; }
h2 {
  max-width: 17ch;
  margin: 0;
  color: var(--blue-950);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: clamp(2.8rem, 4.8vw, 4.8rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: .92;
}
h3 { margin: 0; color: var(--blue-950); font-size: 1.15rem; font-weight: 600; line-height: 1.2; }
.section-heading > p:last-child { max-width: 62ch; margin: 1.3rem 0 0; color: var(--muted); }

.savings-lab { color: var(--white); background: oklch(23% .065 153); }
.savings-shell { width: var(--shell); margin: 0 auto; padding: clamp(5rem, 9vw, 8.5rem) 0; }
.savings-heading { display: grid; grid-template-columns: 90px 1fr; gap: 1.5rem; align-items: start; }
.savings-heading .lab-mark { color: var(--yellow); font-family: "Barlow Condensed", sans-serif; font-size: 6rem; line-height: .7; }
.savings-heading p { margin: 0 0 .65rem; color: oklch(76% .12 150); font-weight: 600; }
.savings-heading h2 { max-width: 13ch; color: var(--white); font-size: clamp(3.5rem, 6vw, 6rem); }
.household-presets { display: flex; flex-wrap: wrap; gap: .65rem; margin: 2.2rem 0 1rem 105px; }
.household-presets button {
  min-height: 44px;
  padding: .65rem 1rem;
  border: 1px solid rgb(255 255 255 / .3);
  border-radius: 3px;
  color: rgb(255 255 255 / .78);
  background: transparent;
  font-weight: 600;
  cursor: pointer;
}
.household-presets button:hover,
.household-presets button.is-active { border-color: var(--yellow); color: var(--blue-950); background: var(--yellow); }
.estimate-assumption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin: 0 0 1rem 105px;
  color: rgb(255 255 255 / .55);
  font-size: .82rem;
}
.estimate-assumption strong { color: var(--yellow); font-family: "Barlow Condensed", sans-serif; font-size: 1.4rem; }
.energy-console { display: grid; grid-template-columns: .72fr 1.28fr; min-height: 460px; border: 1px solid rgb(255 255 255 / .2); }
.ambient-share { display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 2rem; border-right: 1px solid rgb(255 255 255 / .2); background: var(--blue-700); text-align: center; }
.ambient-orbit {
  display: grid;
  place-items: center;
  width: min(280px, 80%);
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(var(--yellow) 0 72%, rgb(255 255 255 / .18) 72% 100%);
}
.ambient-orbit::before { content: ""; grid-area: 1 / 1; width: 77%; aspect-ratio: 1; border-radius: 50%; background: var(--blue-700); }
.ambient-orbit div { z-index: 1; grid-area: 1 / 1; display: grid; }
.ambient-orbit strong { font-family: "Barlow Condensed", sans-serif; font-size: clamp(4rem, 7vw, 6rem); line-height: .8; }
.ambient-orbit span { color: var(--yellow); font-size: 1rem; font-weight: 600; }
.ambient-share > p { max-width: 34ch; margin: 1.6rem 0 0; color: rgb(255 255 255 / .72); }
.energy-readout { display: flex; flex-direction: column; justify-content: center; padding: clamp(1.5rem, 4vw, 4rem); }
.readout-title { margin: 0 0 2rem; color: rgb(255 255 255 / .55); font-size: .9rem; }
.power-row { display: grid; gap: .65rem; margin-bottom: 1.5rem; }
.power-row > div:first-child { display: flex; justify-content: space-between; align-items: baseline; }
.power-row strong { font-weight: 600; }
.power-row span { color: rgb(255 255 255 / .68); }
.power-row b { color: var(--white); font-family: "Barlow Condensed", sans-serif; font-size: 2rem; }
.power-track { height: 18px; overflow: hidden; background: rgb(255 255 255 / .12); }
.power-fill { display: block; width: 100%; height: 100%; transform: scaleX(var(--fill, 1)); transform-origin: left; transition: transform 500ms var(--ease); }
.power-row-geyser .power-fill { background: rgb(255 255 255 / .66); }
.power-row-heatpump .power-fill { background: var(--yellow); }
.savings-summary { display: grid; gap: .1rem; margin-top: 1rem; padding-top: 1.5rem; border-top: 1px solid rgb(255 255 255 / .2); }
.savings-summary p { margin: 0; color: rgb(255 255 255 / .58); }
.savings-summary strong { color: var(--yellow); font-family: "Barlow Condensed", sans-serif; font-size: clamp(3rem, 5vw, 5rem); line-height: .9; }
.savings-summary strong b { font: inherit; }
.savings-summary strong span { color: rgb(255 255 255 / .7); font-family: "Barlow", sans-serif; font-size: 1rem; }
.savings-summary > span { color: rgb(255 255 255 / .72); }
.calculator-cta { width: fit-content; margin-top: 1.5rem; color: var(--blue-950); background: var(--yellow); }
.calculator-cta:hover { background: var(--white); }
.calculation-note { max-width: 86ch; margin: 1.2rem 0 0; color: rgb(255 255 255 / .58); font-size: .82rem; line-height: 1.5; }

.text-link, .source-link { display: inline-flex; min-height: 44px; align-items: center; color: var(--blue-700); font-weight: 600; text-underline-offset: .25em; }
.heat-story { padding: clamp(5rem, 9vw, 9rem) max(1.5rem, calc((100vw - 1180px) / 2)); overflow: hidden; color: var(--white); background: var(--blue-950); }
.heat-story-heading { display: grid; grid-template-columns: .72fr 1.28fr; gap: 2rem; align-items: end; }
.heat-story-heading > p { max-width: 25ch; margin: 0; color: oklch(76% .09 151); font-size: 1.2rem; }
.heat-story-heading h2 { max-width: 13ch; color: var(--white); font-size: clamp(4rem, 7vw, 6rem); }
.heat-story-heading .text-link { grid-column: 2; width: fit-content; color: var(--yellow); }
.heat-loop { display: grid; grid-template-columns: 1fr 70px 1fr 70px 1fr; align-items: stretch; min-height: 510px; margin-top: 4rem; border-block: 1px solid rgb(255 255 255 / .18); }
.heat-loop article { position: relative; display: flex; flex-direction: column; justify-content: flex-end; min-width: 0; padding: 2rem 1.4rem; overflow: hidden; }
.heat-loop article > span { position: absolute; left: 1.4rem; top: 1.4rem; color: var(--yellow); font-family: "Barlow Condensed", sans-serif; font-size: 1.4rem; }
.heat-loop h3 { position: relative; z-index: 2; color: var(--white); font-family: "Barlow Condensed", sans-serif; font-size: clamp(2.5rem, 4vw, 4rem); line-height: .88; text-transform: uppercase; }
.heat-loop p { position: relative; z-index: 2; max-width: 28ch; margin: 1rem 0 0; color: rgb(255 255 255 / .66); }
.loop-air { background: oklch(36% .105 154); }
.rain-lines { position: absolute; inset: 0; opacity: .32; }
.rain-lines i { position: absolute; top: -30%; width: 1px; height: 70%; background: var(--white); transform: rotate(16deg); animation: rain 3s linear infinite; }
.rain-lines i:nth-child(1) { left: 14%; animation-delay: -.4s; }
.rain-lines i:nth-child(2) { left: 32%; animation-delay: -1.8s; }
.rain-lines i:nth-child(3) { left: 51%; animation-delay: -.9s; }
.rain-lines i:nth-child(4) { left: 69%; animation-delay: -2.4s; }
.rain-lines i:nth-child(5) { left: 87%; animation-delay: -1.2s; }
.loop-move { background: var(--blue-700); }
.compressor-mark { position: absolute; left: 50%; top: 38%; width: 65%; aspect-ratio: 1; border: 1px solid rgb(255 255 255 / .32); border-radius: 50%; transform: translate(-50%, -50%); animation: orbit 14s linear infinite; }
.compressor-mark i { position: absolute; left: 50%; top: 50%; width: 16px; aspect-ratio: 1; border-radius: 50%; background: var(--yellow); transform-origin: 0 0; }
.compressor-mark i:nth-child(1) { transform: rotate(0deg) translateX(8rem); }
.compressor-mark i:nth-child(2) { transform: rotate(120deg) translateX(8rem); }
.compressor-mark i:nth-child(3) { transform: rotate(240deg) translateX(8rem); }
.loop-water { background: oklch(51% .145 151); }
.loop-water img { position: absolute; right: -4%; top: 3%; width: 56%; height: 62%; object-fit: contain; filter: drop-shadow(0 18px 14px rgb(0 48 26 / .25)); }
.flow-line { position: relative; display: grid; place-items: center; background: var(--blue-950); }
.flow-line::before { content: ""; width: 100%; height: 1px; background: rgb(255 255 255 / .35); }
.flow-line::after { content: "→"; position: absolute; color: var(--yellow); font-size: 2rem; }
.flow-line i { position: absolute; left: 0; width: 12px; height: 12px; border-radius: 50%; background: var(--yellow); animation: transfer 2.2s var(--ease) infinite; }
@keyframes rain { to { transform: translateY(190%) rotate(16deg); } }
@keyframes orbit { to { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes transfer { 0% { left: 0; opacity: 0; } 20%, 80% { opacity: 1; } 100% { left: calc(100% - 12px); opacity: 0; } }

.home-fit { padding-bottom: 4rem; }
.fit-list { margin-top: 3rem; border-top: 1px solid var(--line); }
.fit-list article {
  display: grid;
  grid-template-columns: .65fr 1.5fr auto;
  gap: 2rem;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}
.fit-size { display: grid; }
.fit-size strong { color: var(--blue-700); font-size: 1.2rem; }
.fit-size span { color: var(--muted); font-size: .8rem; }
.fit-product { display: grid; grid-template-columns: 110px 1fr; gap: 1.25rem; align-items: center; }
.fit-product img { width: 110px; height: 95px; object-fit: contain; }
.fit-product p { margin: .35rem 0 0; color: var(--muted); font-size: .9rem; }
.select-range,
.estimate-household {
  min-height: 46px;
  padding: .7rem 1rem;
  border: 1px solid var(--blue-700);
  border-radius: 8px;
  color: var(--blue-700);
  background: transparent;
  font-weight: 600;
  cursor: pointer;
}
.select-range:hover,
.estimate-household:hover { background: var(--blue-100); }

.installation { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(3rem, 8vw, 8rem); }
.installation-steps { margin: 0; padding: 0; list-style: none; counter-reset: install; }
.installation-steps li {
  counter-increment: install;
  position: relative;
  display: grid;
  gap: .25rem;
  padding: 1.25rem 0 1.25rem 4rem;
  border-bottom: 1px solid var(--line);
}
.installation-steps li::before {
  content: "0" counter(install);
  position: absolute;
  left: 0;
  top: 1.25rem;
  color: var(--blue-600);
  font-size: 1.2rem;
  font-weight: 700;
}
.installation-steps span { color: var(--muted); font-size: .9rem; }

.commercial-route {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem max(1.5rem, calc((100vw - 1180px) / 2));
  color: var(--white);
  background: var(--blue-700);
}
.commercial-route p { max-width: 70ch; margin: 0; }
.commercial-route a { flex: 0 0 auto; min-height: 44px; display: inline-flex; align-items: center; color: var(--yellow); font-weight: 600; text-underline-offset: .25em; }

.faq { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(3rem, 8vw, 8rem); padding-top: 2rem; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 64px; padding: 1.25rem 2.5rem 1.25rem 0; color: var(--blue-950); font-weight: 600; cursor: pointer; }
.faq-list details p { max-width: 65ch; margin: -.25rem 0 1.25rem; color: var(--muted); }

.quote-section {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(3rem, 8vw, 8rem);
  padding: clamp(4rem, 7vw, 6rem) max(1.5rem, calc((100vw - 1180px) / 2));
  background: var(--yellow);
}
.quote-intro > img { width: 130px; margin-bottom: 2rem; }
.quote-intro .section-label { color: var(--blue-800); }
.quote-intro > p:not(.section-label) { max-width: 44ch; margin: 1.25rem 0 0; color: oklch(31% .055 153); }
.direct-contact { display: flex; flex-wrap: wrap; gap: 1.3rem; margin-top: 1.7rem; }
.direct-contact a { min-height: 44px; display: inline-flex; align-items: center; color: var(--blue-950); font-weight: 600; text-underline-offset: .25em; }
.quote-form { padding: clamp(1.25rem, 4vw, 2.5rem); background: var(--white); }
.selected-system {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.3rem;
  padding: .9rem 1rem;
  border: 1px solid var(--blue-700);
  background: var(--blue-100);
}
.selected-system[hidden] { display: none; }
.selected-system div { display: grid; }
.selected-system span { color: var(--muted); font-size: .82rem; }
.selected-system button { min-height: 44px; border: 0; color: var(--blue-700); background: transparent; font-weight: 600; cursor: pointer; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.quote-form label { display: grid; gap: .4rem; margin-bottom: 1rem; color: var(--blue-950); font-size: .9rem; font-weight: 600; }
.quote-form input, .quote-form select {
  width: 100%;
  min-height: 50px;
  padding: .75rem .8rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  background: var(--blue-050);
}
.quote-form [aria-invalid="true"] { border-color: oklch(56% .2 25); }
.optional { color: var(--muted); font-weight: 500; }
.field-error { min-height: 1em; color: oklch(48% .2 25); font-size: .8rem; font-weight: 600; }
.form-submit { width: 100%; color: var(--white); background: var(--blue-700); }
.form-submit:hover { background: var(--blue-800); }
.form-submit:disabled { cursor: wait; opacity: .65; }
.form-note, .form-status { margin: .8rem 0 0; color: var(--muted); font-size: .82rem; }
.form-status.is-error { color: oklch(48% .2 25); }

footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .8rem 3rem;
  padding: 3.5rem max(1.5rem, calc((100vw - 1180px) / 2));
  color: rgb(255 255 255 / .7);
  background: var(--blue-950);
  font-size: .78rem;
}
.footer-brands { display: flex; gap: 1rem; align-items: center; grid-column: 1 / -1; margin-bottom: 1rem; }
.footer-brands img:first-child { width: 190px; height: 48px; object-fit: contain; object-position: left; }
.footer-brands img:last-child { width: 95px; padding: .3rem; border-radius: 5px; background: var(--white); }
footer p { margin: 0; }
.footer-links { display: flex; justify-content: flex-end; gap: 1.1rem; }
.footer-links a { color: var(--white); }
.mobile-actions { display: none; }

@media (max-width: 1020px) {
  .site-header { grid-template-columns: 1fr auto auto; gap: .7rem; }
  .authorization-lockup { justify-self: end; }
  .site-header nav { display: flex; }
  .site-header nav a:not(.header-cta) { display: none; }
  .hero { grid-template-columns: minmax(0, .8fr) minmax(360px, 1.2fr); }
  .hero-copy { padding-right: 1rem; }
  .hero h1 { font-size: clamp(4rem, 8vw, 5.2rem); }
  .product-stage { right: 1rem; }
  .trust-band { grid-template-columns: 1fr; gap: .8rem; }
  .trust-facts { justify-content: flex-start; }
  .heat-loop { grid-template-columns: 1fr 44px 1fr 44px 1fr; }
  .heat-loop article { padding-inline: 1rem; }
  .compressor-mark i:nth-child(1) { transform: rotate(0deg) translateX(5rem); }
  .compressor-mark i:nth-child(2) { transform: rotate(120deg) translateX(5rem); }
  .compressor-mark i:nth-child(3) { transform: rotate(240deg) translateX(5rem); }
}

@media (max-width: 760px) {
  :root { --shell: min(100% - 2rem, 1180px); }
  body { padding-bottom: 64px; }
  .site-header { min-height: 68px; padding: 0 1rem; }
  .ao-brand img { width: 150px; height: 47px; }
  .authorization-lockup { gap: .35rem; min-height: 44px; padding: .35rem .5rem .35rem .65rem; }
  .authorization-lockup span { width: 58px; font-size: .5rem; line-height: 1.2; }
  .authorization-lockup img { width: 72px; height: 25px; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { padding: 3rem 1rem 2rem; }
  .hero h1 { max-width: none; font-size: clamp(3.8rem, 19vw, 4.7rem); }
  .hero-actions { display: grid; }
  .hero-note { display: none; }
  .hero-products { min-height: 540px; border-left: 0; border-top: 1px solid rgb(255 255 255 / .18); }
  .product-stage { inset: 2rem 1rem 6.2rem; }
  .stage-rings { width: 390px; }
  .slide-hpw .carousel-product { top: 17%; width: 92%; height: 54%; }
  .slide-hpi .carousel-product { top: 5%; width: 58%; height: 70%; }
  .slide-hpa .carousel-product { top: 2%; width: 94%; height: 76%; }
  .slide-system {
    bottom: .5rem;
    width: min(250px, calc(100% - 1rem));
    max-width: none;
    padding: .7rem .9rem;
  }
  .slide-system strong { font-size: 1.8rem; }
  .slide-system p { font-size: .75rem; }
  .stage-floor { display: none; }
  .carousel-arrow { top: 45%; width: 44px; height: 44px; }
  .hero-range-strip button { padding-inline: .55rem; }
  .hero-range-strip span { font-size: .64rem; }
  .hero-range-strip b { font-size: 1.1rem; }
  .trust-band {
    width: 100%;
    gap: .9rem;
    padding: 1.25rem 1rem 0;
    border-bottom: 0;
    background: var(--blue-050);
  }
  .trust-brand {
    display: grid;
    grid-template-columns: 1fr;
    gap: .65rem;
    align-items: start;
  }
  .trust-brand img { width: 102px; }
  .trust-brand p { font-size: .9rem; line-height: 1.5; }
  .trust-brand strong { display: block; margin-bottom: .15rem; }
  .trust-facts {
    margin-inline: -1rem;
    border-top: 1px solid var(--line);
    color: var(--ink);
    font-size: .78rem;
    line-height: 1.35;
  }
  .trust-facts-track {
    width: max-content;
    gap: 0;
    justify-content: flex-start;
    animation: trust-roll 18s linear infinite;
  }
  .trust-facts-track span,
  .trust-facts-track > [aria-hidden="true"] {
    display: flex;
    flex: 0 0 auto;
    min-height: 44px;
    align-items: center;
    padding: .65rem 1.25rem;
    border: 0;
    border-right: 1px solid var(--line);
    white-space: nowrap;
  }
  .section-shell { padding-top: 5rem; padding-bottom: 5rem; }
  .home-fit { padding-top: 2.5rem; }
  .installation, .faq, .quote-section { grid-template-columns: 1fr; }
  .savings-heading { grid-template-columns: 50px 1fr; gap: .75rem; }
  .savings-heading .lab-mark { font-size: 4rem; }
  .savings-heading h2 { font-size: clamp(3rem, 14vw, 4.4rem); }
  .savings-shell { padding-top: 3rem; padding-bottom: 2.25rem; }
  .household-presets { display: grid; grid-template-columns: repeat(3, 1fr); gap: .4rem; margin: 2rem 0 .75rem; }
  .household-presets button { padding-inline: .35rem; font-size: .78rem; }
  .estimate-assumption { margin: 0 0 .75rem; }
  .energy-console { grid-template-columns: 1fr; }
  .energy-readout { order: 1; padding-block: 2.25rem; }
  .ambient-share {
    order: 2;
    display: grid;
    grid-template-columns: 112px 1fr;
    gap: 1.1rem;
    align-items: center;
    padding: 1.25rem;
    border-top: 1px solid rgb(255 255 255 / .2);
    border-right: 0;
    text-align: left;
  }
  .ambient-orbit { width: 112px; }
  .ambient-orbit strong { font-size: 3.25rem; }
  .ambient-orbit span { font-size: .8rem; }
  .ambient-share > p { margin: 0; font-size: .82rem; line-height: 1.45; }
  .calculator-cta { width: 100%; text-align: center; }
  .heat-story { padding: 2.75rem 1rem 5rem; border-top: 1px solid rgb(255 255 255 / .1); }
  .heat-story-heading { grid-template-columns: 1fr; }
  .heat-story-heading h2 { font-size: clamp(3.7rem, 17vw, 5rem); }
  .heat-story-heading .text-link { grid-column: 1; }
  .heat-loop { grid-template-columns: 1fr; min-height: 0; }
  .heat-loop article { min-height: 250px; padding: 2rem 1.4rem; }
  .heat-loop h3 { font-size: 2.7rem; }
  .flow-line { min-height: 40px; }
  .flow-line::before { width: 1px; height: 100%; }
  .flow-line::after { content: "↓"; }
  .flow-line i { top: 0; left: 50%; animation: transfer-down 2.2s var(--ease) infinite; }
  .loop-water img { right: 2%; width: 48%; }
  .fit-list article { grid-template-columns: 1fr; gap: 1rem; }
  .fit-product { grid-template-columns: 88px 1fr; }
  .fit-product img { width: 88px; height: 80px; }
  .select-range,
  .estimate-household { width: 100%; }
  .installation, .faq { gap: 2.5rem; }
  .commercial-route { align-items: flex-start; flex-direction: column; gap: .6rem; padding-block: 1.4rem; }
  .quote-section { gap: 2rem; padding: 3.5rem 1rem; }
  .quote-form { margin-inline: -1rem; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  footer { grid-template-columns: 1fr; padding: 3rem 1rem; }
  .footer-brands { grid-column: auto; flex-wrap: wrap; }
  .footer-links { flex-direction: column; justify-content: flex-start; gap: .25rem; }
  .footer-links a { display: inline-flex; min-height: 44px; align-items: center; }
  .mobile-actions {
    position: fixed;
    z-index: 50;
    left: 0;
    right: 0;
    bottom: 0;
    display: grid;
    grid-template-columns: .75fr 1fr 1.1fr;
    min-height: 64px;
    border-top: 1px solid var(--line);
    background: var(--white);
    box-shadow: 0 -8px 24px rgb(0 54 30 / .12);
  }
  .mobile-actions a { display: flex; align-items: center; justify-content: center; color: var(--blue-950); font-size: .84rem; font-weight: 600; text-decoration: none; }
  .mobile-actions a + a { border-left: 1px solid var(--line); }
  .mobile-actions a:last-child { color: var(--white); background: var(--blue-700); }
}

@keyframes transfer-down { 0% { top: 0; opacity: 0; } 20%, 80% { opacity: 1; } 100% { top: calc(100% - 12px); opacity: 0; } }
@keyframes trust-roll { to { transform: translateX(-50%); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .trust-facts { overflow-x: auto; }
  .trust-facts-track { animation: none !important; transform: none; }
  .trust-facts-track > [aria-hidden="true"] { display: none; }
}