/* Design source of truth: ../../../DESIGN.md */
:root {
  color-scheme: light;
  --primary: #254c3a;
  --on-primary: #fff;
  --secondary: #5f6b60;
  --sage: #dce6d6;
  --background: #f8f9f5;
  --surface: #fff;
  --ink: #23392d;
  --muted: #eef2e9;
  --border: #d6ded0;
  --warm: #ede6d8;
  --focus: #9b532d;
  --radius: 28px;
  --container: 1200px;
  --section-space: 104px;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; }
body { margin: 0; background: var(--background); color: var(--ink); font: 400 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
body, button, input { font-family: var(--sans); }
[hidden] { display: none !important; }
::selection { color: var(--ink); background: var(--sage); }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; cursor: pointer; }
button:disabled { cursor: not-allowed; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
h1, h2, h3, p, dl, dd, figure { margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 400; }
h1 { font-size: clamp(52px, 5.65vw, 76px); line-height: 1.06; letter-spacing: -.04em; }
h2 { font-size: clamp(36px, 4.05vw, 52px); line-height: 1.12; letter-spacing: -.035em; }
h1 em, h2 em { font-weight: 400; color: #637b5b; }
h3 { font-size: 22px; line-height: 1.3; font-weight: 500; letter-spacing: -.025em; }
section, #questions { scroll-margin-top: 24px; }
.container { width: min(var(--container), calc(100% - 80px)); margin-inline: auto; }
.section { padding-block: var(--section-space); }
.icon-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 24px; height: 24px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 100; padding: 12px 20px; background: var(--primary); color: #fff; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.eyebrow { display: flex; align-items: center; gap: 12px; color: var(--secondary); font-size: 11px; line-height: 1.6; font-weight: 500; letter-spacing: .12em; margin-bottom: 22px; }
.eyebrow-line { width: 28px; height: 1px; flex: 0 0 auto; background: var(--secondary); }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 12px; min-height: 54px; padding: 14px 24px; border: 0; border-radius: 9999px; background: var(--primary); color: var(--on-primary); font-size: 14px; font-weight: 500; line-height: 1.4; transition: background .18s ease; white-space: nowrap; }
.button:not(:disabled):hover { background: #183c2b; }
.button:disabled { background: #526d59; color: #fff; }
.button-small { min-height: 44px; padding: 10px 18px; font-size: 12px; }
.button-small .icon { width: 19px; height: 19px; }
.button .arrow-icon { width: 18px; height: 18px; margin-left: 4px; }
.text-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-size: 13px; font-weight: 500; }
.text-link:hover { text-decoration: underline; text-underline-offset: 5px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 30; background: var(--background); border-bottom: 1px solid #e5e9e0; }
.header-inner { position: relative; display: flex; justify-content: space-between; align-items: center; height: 84px; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-size: 31px; line-height: 1; font-weight: 600; letter-spacing: -.07em; }
.brand-icon { width: 30px; height: 30px; stroke-width: 1.5; }
.brand-dot { color: #718463; }
.desktop-nav { display: flex; gap: 32px; }
.desktop-nav a { font-size: 13px; color: var(--secondary); padding: 12px 0; }
.desktop-nav a:hover { color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--border); background: transparent; border-radius: 50%; }
.mobile-nav { position: absolute; top: 100%; right: 0; left: 0; padding: 12px 20px; border: 1px solid var(--border); border-radius: 0 0 16px 16px; background: var(--background); box-shadow: 0 14px 20px #23392d0a; }
.mobile-nav a { display: block; padding: 12px 0; }

/* Hero */
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; padding-block: 48px 56px; }
.hero-copy { padding-block: 10px; }
.hero .eyebrow { margin-bottom: 24px; font-size: 10px; }
.hero-description { max-width: 440px; margin-top: 26px; color: var(--secondary); font-size: 16px; line-height: 1.7; }
.offer-price { display: flex; align-items: center; gap: 28px; margin-block: 27px 19px; }
.price-label { display: block; color: var(--secondary); font-size: 12px; }
.price { font-size: 36px; font-weight: 500; letter-spacing: -.05em; line-height: 1.25; margin-top: 4px; }
.price > span { font-size: 27px; }
.heater-tag { display: flex; align-items: center; gap: 8px; padding: 9px 13px; font-size: 10px; line-height: 1.5; color: #50634d; border: 1px solid var(--border); border-radius: 8px; }
.heater-tag .icon { width: 19px; height: 19px; }
.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
.availability-note { margin-top: 10px; color: var(--secondary); font-size: 12px; }
.hero-visual { position: relative; min-width: 0; height: 636px; margin-left: 10px; }
.room-photo { width: 100%; height: 100%; border-radius: var(--radius); object-fit: cover; object-position: 58% 52%; }
.scene-caption { position: absolute; top: 24px; left: 26px; max-width: calc(100% - 52px); padding: 8px 12px; border-radius: 9999px; background: var(--background); color: var(--ink); font-size: 11px; line-height: 1.4; letter-spacing: .025em; }
.hero-product { position: absolute; left: -34px; bottom: 32px; width: 226px; padding: 18px; border-radius: 20px; background: #fff; color: var(--ink); box-shadow: 0 12px 38px #2531231a; }
.product-overline { display: block; color: var(--secondary); font-size: 9px; letter-spacing: .09em; }
.hero-product > img { width: 100%; aspect-ratio: 1; object-fit: contain; margin-block: 10px; }
.product-caption { display: flex; justify-content: space-between; align-items: center; font-size: 10px; line-height: 1.7; color: var(--secondary); }
.product-caption strong { display: block; font-size: 16px; line-height: 1.3; font-weight: 500; color: var(--ink); }
.product-round { display: grid; place-items: center; width: 34px; height: 34px; background: var(--muted); border-radius: 50%; color: var(--primary); }
.product-round .icon { width: 19px; height: 19px; }
.hero-note { position: absolute; top: 76px; right: 22px; display: flex; gap: 11px; align-items: center; padding: 12px 18px; background: var(--background); color: var(--primary); border-radius: 12px; box-shadow: 0 4px 18px #23392d0d; }
.hero-note span { font-size: 10px; line-height: 1.5; }
.hero-note strong { display: block; font-size: 18px; font-weight: 500; }
.benefit-strip { display: grid; grid-template-columns: repeat(4,1fr); padding-block: 28px; border-block: 1px solid var(--border); }
.benefit-strip > div { display: flex; align-items: center; justify-content: center; gap: 17px; padding: 4px 12px; border-right: 1px solid var(--border); }
.benefit-strip > div:first-child { justify-content: flex-start; padding-left: 0; }
.benefit-strip > div:last-child { border-right: 0; }
.benefit-strip > div > .icon { width: 28px; height: 28px; color: #647e5b; }
.benefit-strip strong { display: block; font-size: 19px; font-weight: 500; line-height: 1.4; letter-spacing: -.025em; }
.benefit-strip p > span { display: block; color: var(--secondary); font-size: 12px; }

/* Feature stories */
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 42px; }
.section-heading > div { flex: 1 1 54%; }
.section-heading > p { flex: 0 1 362px; color: var(--secondary); font-size: 15px; padding-bottom: 4px; }
.feature-grid { display: grid; grid-template-columns: 1.12fr 1fr 1fr; gap: 20px; }
.feature-card { display: flex; flex-direction: column; min-width: 0; min-height: 440px; padding: 30px; background: var(--muted); border-radius: var(--radius); }
.feature-icon { display: block; margin-bottom: 26px; }
.feature-icon .icon { width: 30px; height: 30px; }
.feature-card > p { margin-top: 16px; font-size: 14px; line-height: 1.65; color: var(--secondary); }
.feature-card .small-note { margin-top: auto; color: var(--secondary); font-size: 12px; }
.quiet { background: var(--sage); }
.warmth { background: var(--warm); }
.air-path { display: flex; justify-content: center; align-items: center; gap: 10px; height: 146px; margin-block: 10px 0; }
.filter-layer { position: relative; display: grid; place-items: center; flex: 0 0 56px; height: 78px; border: 5px solid #718569; border-radius: 3px; }
.prefilter { background: repeating-linear-gradient(90deg,transparent 0 5px,#b1beaa 5px 6px), repeating-linear-gradient(0deg,#eff4eb 0 5px,#b1beaa 5px 6px); transform: rotate(-7deg); }
.hepa { background: repeating-linear-gradient(90deg,#fcfff9 0 3px,#afbe9f 3px 5px); transform: rotate(7deg); }
.filter-layer > span { background: #eff4eb; color: var(--primary); font-size: 11px; font-weight: 600; padding: 1px 4px; }
.air-lines { width: 30px; height: 28px; background: repeating-linear-gradient(0deg,transparent 0 8px,#a4b29c 8px 9px); opacity: .6; }
.air-path .icon { width: 18px; height: 18px; }
.air-lines.clean { background: repeating-linear-gradient(0deg,transparent 0 8px,#3e724e 8px 9px); }
.quiet-number { position: relative; display: flex; align-items: baseline; gap: 6px; margin: auto 0 22px; padding-top: 24px; font-family: var(--serif); font-size: 82px; line-height: 1; letter-spacing: -.05em; }
.quiet-number > span { font-family: var(--sans); font-size: 20px; letter-spacing: 0; }
.sound-lines { display: flex; align-items: center; gap: 6px; margin-left: auto; height: 50px; padding-left: 16px; }
.sound-lines i { display: block; width: 2px; height: 8px; background: #758e6a; border-radius: 9999px; }
.sound-lines i:nth-child(2n) { height: 18px; }
.sound-lines i:nth-child(3n) { height: 30px; }
.sound-lines i:nth-child(5) { height: 46px; }
.heat-illustration { display: flex; justify-content: center; gap: 18px; height: 103px; margin: auto 0 16px; padding-top: 25px; }
.heat-illustration > span { width: 16px; height: 54px; border-left: 2px solid #b08e69; border-radius: 50%; transform: rotate(15deg); }
.heat-illustration > span:nth-child(2) { margin-top: -8px; }

/* Product gallery */
.compact-section { padding-block: 74px; background: #eef1e8; }
.compact-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 90px; }
.product-gallery { min-width: 0; }
.gallery-main { position: relative; overflow: hidden; background: #fff; border-radius: var(--radius); aspect-ratio: 1.02; padding: 58px 54px 46px; }
.gallery-main > img { width: 100%; height: 100%; object-fit: contain; }
.gallery-badge { position: absolute; top: 22px; left: 24px; font-size: 10px; color: var(--secondary); letter-spacing: .12em; }
.dimension { position: absolute; font-size: 11px; color: var(--secondary); text-align: center; line-height: 1.4; }
.dimension.horizontal { bottom: 17px; left: 24%; right: 24%; border-top: 1px solid var(--border); padding-top: 7px; }
.dimension.vertical { top: 28%; bottom: 24%; right: 15px; writing-mode: vertical-rl; border-left: 1px solid var(--border); padding-left: 7px; }
.gallery-thumbnails { display: flex; justify-content: center; gap: 12px; margin-top: 17px; }
.thumbnail { display: block; width: 66px; height: 66px; border: 1px solid transparent; padding: 5px; background: #fff; border-radius: 10px; }
.thumbnail[aria-pressed="true"] { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary); }
.thumbnail img { width: 100%; height: 100%; object-fit: contain; border-radius: 6px; }
.lead { margin-top: 24px; color: var(--secondary); font-size: 16px; }
.dimensions-list { display: flex; gap: 30px; margin-block: 30px; padding-bottom: 30px; border-bottom: 1px solid var(--border); }
.dimensions-list > div { display: flex; flex-direction: column; gap: 5px; }
.dimensions-list strong { font-size: 32px; font-weight: 500; line-height: 1.25; letter-spacing: -.04em; }
.dimensions-list strong span { font-size: 13px; margin-left: 4px; letter-spacing: 0; }
.dimensions-list div > span { color: var(--secondary); font-size: 12px; }
.control-note { display: flex; gap: 20px; align-items: flex-start; }
.control-note > .icon { margin-top: 5px; width: 27px; height: 27px; }
.control-note h3 { font-size: 18px; }
.control-note p { color: var(--secondary); font-size: 14px; margin-top: 10px; }
.control-label { display: inline-block; margin-top: 12px; color: var(--primary); font-size: 11px; text-transform: uppercase; letter-spacing: .09em; }

/* Comparison */
.comparison-selector { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-bottom: 24px; }
.comparison-selector > span { font-size: 13px; color: var(--secondary); }
.comparison-selector > div { display: flex; flex-wrap: wrap; gap: 10px; }
.comparison-selector button { padding: 11px 20px; min-height: 44px; background: transparent; color: var(--ink); border: 1px solid var(--border); border-radius: 9999px; font-size: 13px; transition: background .18s ease, color .18s ease; }
.comparison-selector button:hover { background: var(--muted); }
.comparison-selector button[aria-pressed="true"] { background: var(--primary); border-color: var(--primary); color: #fff; }
.comparison-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.comparison-head { display: grid; grid-template-columns: .8fr 1fr 1fr; gap: 20px; align-items: center; padding: 34px 44px; background: var(--muted); }
.comparison-head > div:first-child { grid-column: 2; }
.comparison-head > div:last-child { grid-column: 3; }
.mini-label { display: block; color: var(--secondary); font-size: 10px; letter-spacing: .1em; margin-bottom: 10px; }
.comparison-head h3 { font-size: 28px; }
.comparison-subtitle { display: block; margin-top: 8px; font-size: 12px; color: var(--secondary); }
.versus { display: none; place-items: center; width: 36px; height: 36px; border: 1px solid var(--border); border-radius: 50%; font-size: 12px; font-family: var(--serif); font-style: italic; color: var(--secondary); }
.comparison-rows { padding: 4px 44px; }
.comparison-rows > div { display: grid; grid-template-columns: .8fr 1fr 1fr; gap: 20px; padding: 19px 0; border-bottom: 1px solid #e6ebe2; font-size: 14px; align-items: center; }
.comparison-rows > div:last-child { border-bottom: 0; }
.comparison-rows dt { color: var(--secondary); font-size: 12px; }
.comparison-rows dd:first-of-type { color: var(--primary); font-weight: 500; }
.comparison-rows dd { overflow-wrap: anywhere; }
.comparison-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; padding: 26px 44px; border-top: 1px solid var(--border); background: #f7f9f3; }
.comparison-bottom > div { display: flex; gap: 12px; align-items: flex-start; }
.comparison-bottom .icon { width: 20px; height: 20px; margin-top: 3px; }
.comparison-bottom p { font-size: 13px; line-height: 1.65; }
.comparison-bottom > p { color: var(--secondary); }
.comparison-footnote { margin-top: 15px; color: var(--secondary); font-size: 12px; }
summary { cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
.full-comparison { margin-top: 22px; border-block: 1px solid var(--border); }
.full-comparison > summary { display: flex; justify-content: space-between; align-items: center; min-height: 62px; gap: 20px; font-size: 14px; }
details > summary .icon { transition: transform .18s ease; width: 20px; height: 20px; }
details[open] > summary .icon { transform: rotate(45deg); }
.table-wrap { overflow-x: auto; margin-bottom: 24px; }
table { border-collapse: collapse; width: 100%; min-width: 730px; font-size: 13px; text-align: left; }
caption { text-align: left; padding-bottom: 14px; color: var(--secondary); font-size: 12px; }
th, td { padding: 16px 18px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 500; }
thead { color: var(--secondary); }
thead th:first-child { width: 170px; }
thead th:nth-child(2) { width: 110px; }
thead th:nth-child(3) { width: 200px; }
.our-model { background: var(--muted); }

/* Specifications and FAQ */
.details-section { padding-block: 84px; background: var(--muted); }
.details-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 92px; }
.details-intro { margin-top: 22px; color: var(--secondary); font-size: 14px; max-width: 380px; }
.spec-list { margin-top: 32px; }
.spec-list > div { display: grid; grid-template-columns: 1fr 1.05fr; gap: 18px; padding-block: 13px; border-bottom: 1px solid var(--border); font-size: 13px; }
.spec-list dt { color: var(--secondary); }
.spec-list dd { text-align: right; }
.spec-note { margin-top: 18px; font-size: 12px; color: var(--secondary); }
.faq-list { margin-top: 30px; }
.faq-list details { border-bottom: 1px solid var(--border); }
.faq-list summary { display: flex; justify-content: space-between; align-items: center; gap: 22px; min-height: 71px; padding-block: 17px; font-size: 15px; font-weight: 500; line-height: 1.5; }
.faq-list details > p { padding: 0 32px 23px 0; color: var(--secondary); font-size: 14px; line-height: 1.7; }

/* Final offer and footer */
.final-section { padding-bottom: 60px; }
.final-offer { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 50px; padding: 58px; border-radius: var(--radius); background: var(--primary); color: #fff; }
.final-offer .eyebrow { color: #c4d5ba; }
.final-offer h2 { font-size: clamp(36px, 3.7vw, 48px); }
.final-offer h2 em { color: #c6d7b6; }
.final-copy > p:not(.eyebrow):not(.availability-note) { color: #d2ddd0; margin-top: 22px; font-size: 14px; }
.final-price { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; margin-block: 28px 22px; }
.final-price > span { font-size: 36px; letter-spacing: -.04em; line-height: 1.3; }
.final-price small { color: #d2ddd0; font-size: 11px; line-height: 1.6; }
.button-light { background: #e1ead7; color: #254c3a; }
.button-light:hover { background: #f7faf4; }
.button-light:disabled { background: #e1ead7; color: #254c3a; }
.final-offer .availability-note { color: #c5d5bf; }
.final-photo { padding: 24px 24px 20px; border-radius: 20px; background: #fff; color: var(--ink); }
.final-photo img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.final-photo > span { display: block; text-align: center; margin-top: 12px; font-size: 10px; letter-spacing: .13em; color: var(--secondary); }
.site-footer { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 30px; padding-block: 24px 36px; border-top: 1px solid var(--border); }
.site-footer > p { color: var(--secondary); font-size: 12px; }
.back-top { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: 12px; }
.back-top .icon { width: 18px; height: 18px; }
.source-links { grid-column: 1 / -1; padding-top: 14px; border-top: 1px solid #e5e9e0; color: var(--secondary); font-size: 12px; }
.source-links summary { display: inline-block; min-height: 32px; }
.source-links summary::after { content: ' +'; }
.source-links[open] summary::after { content: ' −'; }
.source-links p { margin-top: 12px; max-width: 800px; }
.source-links a { text-decoration: underline; text-underline-offset: 3px; }
.source-links li { margin-block: 6px; }
.mobile-offer { display: none; }

@media (min-width: 1450px) { .hero { padding-block: 64px; } }
@media (min-width: 1101px) and (max-height: 800px) {
  .hero { padding-block: 20px; }
  .hero-copy { padding-block: 0; }
  .hero h1 { font-size: 60px; }
  .hero-visual { height: 520px; }
  .hero .eyebrow { margin-bottom: 18px; }
  .hero-description { margin-top: 20px; font-size: 15px; line-height: 1.6; }
  .offer-price { margin-block: 22px 18px; }
}
@media (max-width: 1100px) {
  .hero { gap: 28px; }
  .hero-visual { height: 610px; }
  .hero h1 { font-size: 59px; }
  .hero-product { left: -20px; width: 205px; }
  .hero-cta { gap: 8px 15px; }
  .hero-cta .button { padding-inline: 18px; }
  .compact-grid, .details-grid { gap: 50px; }
  .feature-grid { gap: 16px; }
  .feature-card { padding: 25px; }
  .quiet-number { font-size: 70px; }
  .sound-lines { gap: 4px; padding-left: 10px; }
  .final-offer { gap: 36px; padding: 42px; }
}
@media (max-width: 1000px) {
  .container { width: calc(100% - 48px); }
  .desktop-nav { gap: 20px; }
  .header-inner { gap: 20px; }
  .hero h1 { font-size: 54px; }
  .hero .eyebrow { max-width: 300px; }
  .hero-visual { height: 590px; }
  .hero-product { width: 190px; left: -14px; }
  .hero-note { right: 15px; padding: 10px 12px; }
  .benefit-strip > div { gap: 10px; }
  .benefit-strip strong { font-size: 17px; }
  .benefit-strip p > span { font-size: 11px; }
  .section-heading { gap: 30px; }
  .section-heading > p { flex-basis: 300px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .filtration { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; min-height: 0; gap: 10px 24px; }
  .filtration .feature-icon { grid-column: 1; margin-bottom: 8px; }
  .filtration > h3, .filtration > p { grid-column: 1; }
  .filtration > p { margin-top: 4px; }
  .filtration .air-path { grid-column: 2; grid-row: 1 / 4; height: 100%; }
  .filtration .small-note { grid-column: 2; text-align: center; }
  .feature-card { min-height: 400px; }
  .filtration { min-height: 260px; }
  .compact-grid { gap: 36px; }
  .gallery-main { padding: 58px 35px 46px; }
  .dimensions-list { gap: 22px; }
  .dimensions-list strong { font-size: 28px; }
  .comparison-head, .comparison-bottom { padding-inline: 30px; }
  .comparison-rows { padding-inline: 30px; }
  .details-grid { gap: 42px; }
}
@media (max-width: 760px) {
  :root { --section-space: 64px; }
  html { scroll-padding-top: 88px; }
  .container { width: calc(100% - 40px); }
  .header-inner { height: 70px; }
  .brand { font-size: 27px; }
  .desktop-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-actions > .button { padding: 10px 14px; }
  .hero { grid-template-columns: 1fr; gap: 34px; padding-block: 34px 42px; }
  .hero-copy { padding: 0; }
  .hero .eyebrow { font-size: 10px; max-width: none; margin-bottom: 20px; }
  .hero h1 { font-size: clamp(44px, 8vw, 62px); }
  .desktop-break { display: none; }
  .hero-description { margin-top: 20px; font-size: 15px; max-width: 510px; }
  .hero-cta { gap: 8px 20px; }
  .hero-visual { height: 510px; margin-left: 12px; }
  .hero-product { left: -12px; bottom: 24px; width: 220px; }
  .hero-note { right: 20px; top: 65px; }
  .room-photo { object-position: center 62%; }
  .benefit-strip { grid-template-columns: repeat(2,1fr); padding-block: 8px; }
  .benefit-strip > div, .benefit-strip > div:first-child { padding: 19px 12px; justify-content: flex-start; }
  .benefit-strip > div:nth-child(2n) { border-right: 0; padding-left: 20px; }
  .benefit-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .benefit-strip > div > .icon { width: 24px; height: 24px; }
  .benefit-strip strong { font-size: 18px; }
  .benefit-strip p > span { font-size: 11px; }
  .section-heading { display: block; margin-bottom: 28px; }
  .section-heading > p { margin-top: 22px; max-width: 500px; font-size: 14px; }
  .eyebrow { margin-bottom: 16px; }
  .compact-section { padding-block: 54px; }
  .compact-grid { grid-template-columns: 1fr; gap: 38px; }
  .compact-copy { grid-row: 1; }
  .compact-copy .lead { max-width: 470px; }
  .dimensions-list { gap: 42px; }
  .gallery-main { max-width: 510px; margin-inline: auto; }
  .control-note { max-width: 480px; }
  .comparison-selector { gap: 12px; }
  .comparison-selector > span { width: 100%; }
  .comparison-selector > div { gap: 8px; }
  .comparison-selector button { padding-inline: 15px; font-size: 12px; }
  .comparison-head { padding: 25px 20px; grid-template-columns: 1fr 32px 1fr; gap: 10px; }
  .comparison-head > div:first-child { grid-column: 1; grid-row: 1; }
  .comparison-head > div:last-child { padding-left: 0; }
  .comparison-head h3 { font-size: 22px; }
  .comparison-subtitle { font-size: 11px; }
  .mini-label { font-size: 9px; }
  .versus { display: grid; grid-column: 2; grid-row: 1; width: 28px; height: 28px; }
  .comparison-rows { padding: 0 20px; }
  .comparison-rows > div { grid-template-columns: 1fr 1fr; gap: 8px 20px; padding: 16px 0; font-size: 13px; }
  .comparison-rows dt { grid-column: 1 / -1; font-size: 11px; }
  .comparison-bottom { grid-template-columns: 1fr; gap: 18px; padding: 24px 20px; }
  .details-section { padding-block: 60px; }
  .details-grid { grid-template-columns: 1fr; gap: 54px; }
  .details-intro { max-width: 440px; }
  .faq-list { margin-top: 22px; }
  .final-section { padding-bottom: 40px; }
  .final-offer { grid-template-columns: 1fr; gap: 32px; padding: 32px; }
  .final-photo { max-width: 330px; width: 100%; margin-inline: auto; }
  .site-footer { grid-template-columns: 1fr auto; gap: 18px; padding-bottom: 122px; }
  .site-footer > p { grid-row: 2; grid-column: 1 / -1; }
  .mobile-offer:not([hidden]) { display: flex; position: fixed; bottom: 0; inset-inline: 0; z-index: 25; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 20px calc(12px + env(safe-area-inset-bottom)); background: var(--background); border-top: 1px solid var(--border); box-shadow: 0 -4px 22px #23392d0a; }
  .mobile-offer > div { display: flex; flex-direction: column; gap: 2px; }
  .mobile-offer > div > span { color: var(--secondary); font-size: 10px; }
  .mobile-offer strong { font-size: 20px; font-weight: 500; letter-spacing: -.03em; }
  .mobile-offer .button { min-height: 46px; padding: 12px 18px; font-size: 13px; }
}
@media (max-width: 480px) {
  .header-actions > .button { font-size: 11px; gap: 7px; }
  .header-actions > .button > span { max-width: 115px; }
  .header-actions { gap: 8px; }
  .header-inner { gap: 12px; }
  .hero h1 { font-size: 44px; }
  .hero .eyebrow { font-size: 9px; gap: 9px; }
  .eyebrow-line { width: 20px; }
  .hero-cta { align-items: flex-start; flex-direction: column; gap: 6px; }
  .hero-cta .button { padding-inline: 23px; width: 100%; }
  .hero-cta .text-link { font-size: 12px; }
  .hero-visual { height: 440px; }
  .hero-product { width: 182px; padding: 15px; }
  .product-overline { font-size: 8px; }
  .product-caption strong { font-size: 15px; }
  .scene-caption { top: 22px; left: 20px; font-size: 10px; }
  .hero-note { right: 14px; padding: 10px; }
  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .feature-card, .filtration { display: flex; min-height: 365px; padding: 28px; }
  .filtration .feature-icon { margin-bottom: 26px; }
  .filtration > p { margin-top: 16px; }
  .filtration .air-path { height: 125px; }
  .filtration .small-note { text-align: left; }
  .feature-card > p { max-width: 340px; }
  .quiet-number { font-size: 76px; }
  .quiet-number, .heat-illustration { margin-top: 22px; }
  .benefit-strip > div { gap: 10px; }
  .benefit-strip > div > .icon { width: 21px; height: 21px; }
  .benefit-strip strong { font-size: 15px; }
  .benefit-strip p > span { font-size: 10px; }
  .comparison-selector > div { display: grid; width: 100%; grid-template-columns: 1fr 1fr; }
  .comparison-head h3 { font-size: 18px; }
  .comparison-head { gap: 6px; padding-inline: 16px; }
  .mini-label { font-size: 8px; letter-spacing: .06em; }
  .comparison-subtitle { font-size: 10px; }
  .comparison-rows { padding-inline: 16px; }
  .final-offer { padding: 28px 23px; }
  .final-offer .button { padding-inline: 16px; font-size: 13px; gap: 9px; width: 100%; }
  .final-price { gap: 15px; }
  .final-price > span { font-size: 32px; }
  .final-price small { font-size: 10px; }
}
@media (max-width: 360px) {
  .brand { font-size: 24px; gap: 5px; }
  .brand-icon { width: 24px; height: 24px; }
  .header-actions > .button > span { display: none; }
  .header-actions > .button { width: 44px; padding: 10px; }
  .offer-price { gap: 18px; }
  .price { font-size: 32px; }
  .heater-tag { padding-inline: 9px; }
  .hero h1 { font-size: 39px; }
  .dimensions-list { gap: 26px; }
  .benefit-strip > div { padding-inline: 0; }
  .benefit-strip > div:nth-child(2n) { padding-left: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}