:root {
  --blue: #118bc1;
  --blue-dark: #08658f;
  --deep: #0b4861;
  --deep-2: #08394f;
  --ink: #173443;
  --pale: #e6fcff;
  --line: #cfe2e8;
  --orange: #ffb250;
  --wood: #d8b88f;
  --wood-light: #f3e8da;
  --muted: #5e7b89;
  --white: #fff;
  --shadow: 0 18px 48px rgba(9, 43, 67, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--white); font-family: Inter, Arial, sans-serif; line-height: 1.5; }
body.lightbox-open { overflow: hidden; }
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; touch-action: manipulation; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.wrap { width: min(1160px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 200; padding: 12px 16px; border-radius: 4px; color: #fff; background: var(--deep); }
.skip-link:focus { top: 12px; }

/* Header intentionally matches the repair and lining pages. */
.site-header { position: sticky; top: 0; z-index: 50; height: 82px; border-bottom: 1px solid #e5f0f4; background: #fff; transition: box-shadow .25s ease, background .25s ease; }
.site-header.is-scrolled { background: rgba(255, 255, 255, .94); box-shadow: 0 8px 24px rgba(10, 64, 85, .1); backdrop-filter: blur(10px); }
.nav-wrap { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 26px; height: 100%; }
.brand { display: flex; align-items: center; gap: 10px; min-width: max-content; color: var(--deep); line-height: 1; }
.brand-logo { display: block; width: 46px; height: 46px; object-fit: contain; border-radius: 4px; }
.brand b { display: block; font-size: 20px; letter-spacing: .11em; }
.brand small { display: block; margin-top: 5px; color: var(--blue); font-size: 7px; letter-spacing: .17em; }
.nav { display: flex; align-items: center; gap: 23px; color: #537587; font-size: 13px; }
.nav a, .phone { transition: color .2s ease; }
.nav a:hover, .phone:hover { color: var(--blue); }
.header-contact { display: grid; justify-items: end; gap: 4px; margin-left: auto; line-height: 1.1; }
.header-email { color: var(--blue-dark); font-size: 12px; font-weight: 600; letter-spacing: .015em; transition: color .2s ease; }
.header-email:hover { color: var(--blue); text-decoration: underline; }
.phone { display: inline-flex; align-items: center; gap: 8px; color: var(--deep); font-size: 14px; font-weight: 700; text-align: right; }
.phone-icon { display: block; flex: 0 0 auto; width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; place-items: center; width: 44px; height: 44px; border: 0; border-radius: 4px; color: var(--deep); background: var(--pale); font-size: 24px; cursor: pointer; }

.hero { position: relative; overflow: hidden; padding-top: 28px; background: linear-gradient(125deg, #f0fbfe 0%, #fff 62%); }
.hero::after { content: ""; position: absolute; right: -210px; top: 70px; width: 650px; height: 650px; border: 1px solid #d7edf3; border-radius: 50%; box-shadow: 0 0 0 42px rgba(230, 252, 255, .65), 0 0 0 43px #e3f2f6; pointer-events: none; }
.hero-lines { position: absolute; inset: 0; opacity: .23; background-image: linear-gradient(rgba(17, 139, 193, .12) 1px, transparent 1px), linear-gradient(90deg, rgba(17, 139, 193, .12) 1px, transparent 1px); background-size: 68px 68px; mask-image: linear-gradient(to right, #000, transparent 50%); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .95fr 1.05fr; align-items: center; gap: 44px; min-height: 640px; }
.breadcrumbs { display: flex; gap: 8px; margin-bottom: 20px; color: #7894a3; font-size: 11px; }
.breadcrumbs a:hover { color: var(--blue); }
.eyebrow { margin: 0 0 18px; color: var(--blue-dark); font-size: 11px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span { display: inline-block; width: 28px; height: 2px; margin-right: 9px; vertical-align: middle; background: var(--orange); }
.eyebrow.light { color: #9ce6ff; }
.hero h1 { margin: 0 0 24px; color: var(--deep); font-size: clamp(44px, 5vw, 70px); line-height: 1.02; letter-spacing: -.055em; }
.hero h1 em { color: var(--blue); font-style: normal; }
.lead { max-width: 590px; margin: 0; color: #4f7182; font-size: 18px; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; gap: 12px; margin-top: 34px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 52px; padding: 0 23px; border: 1px solid transparent; border-radius: 4px; font-size: 13px; font-weight: 700; cursor: pointer; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.btn span { font-size: 18px; }
.btn-primary { color: #fff; background: var(--blue-dark); box-shadow: 0 12px 25px rgba(18, 133, 191, .17); }
.btn-primary:hover { background: #055a84; transform: translateY(-2px); }
.btn-ghost { color: var(--blue-dark); border-color: #b9dce9; background: transparent; }
.btn-ghost:hover { background: #e7f7fb; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin-top: 43px; }
.hero-facts > div { min-width: 0; padding-left: 14px; border-left: 2px solid #c6e8f1; }
.hero-facts strong, .hero-facts span { display: block; }
.hero-facts strong { color: var(--deep); font-size: 14px; }
.hero-facts span { margin-top: 5px; color: var(--muted); font-size: 10px; }
.hero-visual { position: relative; min-width: 0; }
.hero-photo { position: relative; z-index: 1; overflow: hidden; margin: 0; border-radius: 6px; box-shadow: 0 28px 70px rgba(11, 72, 97, .2); transform: rotate(1.2deg); }
.hero-photo::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.45); border-radius: inherit; pointer-events: none; }
.hero-photo img { display: block; width: 100%; aspect-ratio: 1.19 / 1; object-fit: cover; object-position: 45% center; }
.angle-badge { position: absolute; z-index: 3; right: -18px; top: -27px; display: grid; place-items: center; width: 122px; height: 122px; border: 9px solid #fff; border-radius: 50%; color: #fff; background: var(--blue); box-shadow: 0 15px 35px rgba(9, 71, 100, .24); text-align: center; }
.angle-badge strong { display: block; font-size: 29px; line-height: 1; }
.angle-badge span { display: block; margin-top: 3px; color: #caf3ff; font-size: 9px; line-height: 1.25; text-transform: uppercase; }
.made-badge { position: absolute; z-index: 3; left: -25px; bottom: 25px; display: flex; align-items: center; gap: 12px; padding: 14px 18px; color: #5c7380; background: #fff; border-radius: 4px; box-shadow: var(--shadow); }
.badge-mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; color: #fff; background: var(--orange); font-weight: 900; }
.made-badge small, .made-badge b { display: block; }
.made-badge small { color: var(--blue-dark); font-size: 8px; font-weight: 800; letter-spacing: .12em; }
.made-badge b { margin-top: 2px; color: var(--deep); font-size: 13px; }
.hero-ticker { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 62px; color: #5e7d8c; border-top: 1px solid #d8e9ee; font-size: 10px; font-weight: 800; letter-spacing: .15em; }
.hero-ticker i { color: var(--orange); font-size: 17px; font-style: normal; }

.section { padding: 104px 0; }
.section h2 { margin: 0; color: var(--deep); font-size: clamp(36px, 4vw, 52px); line-height: 1.07; letter-spacing: -.045em; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 60px; }
.section-heading > p { max-width: 400px; margin: 0 0 4px; color: var(--muted); }
.muted { color: var(--muted); }

.difference { position: relative; overflow: hidden; }
.difference::before { content: ""; position: absolute; right: -120px; top: 170px; width: 330px; height: 150px; border: 1px solid #d7edf3; border-radius: 50%; transform: rotate(-25deg); }
.difference-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 44px; margin-top: 55px; }
.product-stage { position: relative; overflow: hidden; min-width: 0; margin: 0; border-radius: 7px; background: linear-gradient(145deg, #f7fbfc, #d9e4e8); }
.product-stage img { display: block; width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.product-stage figcaption { position: absolute; left: 22px; right: 22px; bottom: 20px; padding: 18px 20px; color: #fff; background: rgba(8, 57, 79, .92); backdrop-filter: blur(7px); }
.product-stage figcaption b, .product-stage figcaption span { display: block; }
.product-stage figcaption b { font-size: 15px; }
.product-stage figcaption span { margin-top: 4px; color: #b9dce6; font-size: 11px; }
.compare-list { display: grid; gap: 12px; }
.compare-card { display: grid; grid-template-columns: 60px 1fr; align-items: start; gap: 15px; padding: 23px; border: 1px solid var(--line); background: #fff; }
.compare-card.is-main { border-color: #85ccdf; background: var(--pale); box-shadow: 0 14px 35px rgba(10, 71, 95, .08); }
.compare-index { color: #a8dbe8; font-size: 30px; font-weight: 800; letter-spacing: -.06em; }
.compare-card.is-main .compare-index { color: var(--blue); }
.compare-label { margin: 1px 0 6px; color: var(--blue-dark); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.compare-card h3 { margin: 0; color: var(--deep); font-size: 19px; }
.compare-card div > p:last-child { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.sizes { position: relative; overflow: hidden; color: #fff; background: var(--deep); }
.sizes::after { content: ""; position: absolute; right: -100px; bottom: -160px; width: 430px; height: 430px; border: 1px solid #2e718d; border-radius: 50%; box-shadow: 0 0 0 32px var(--deep), 0 0 0 33px #245e77, 0 0 0 65px var(--deep), 0 0 0 66px #1b526a; opacity: .55; }
.sizes-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 70px; }
.sizes h2 { color: #fff; }
.size-lead { max-width: 510px; margin: 24px 0 0; color: #bed8e2; }
.height-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-top: 35px; }
.height-tab { display: flex; align-items: center; gap: 10px; min-height: 78px; padding: 12px; border: 1px solid rgba(141, 203, 220, .28); color: #cce2e9; background: #083c52; text-align: left; cursor: pointer; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.height-tab:hover { border-color: #67cae2; transform: translateY(-2px); }
.height-tab.is-active { color: #fff; border-color: var(--orange); background: #0a5c79; }
.height-tab strong { color: var(--orange); font-size: 30px; line-height: 1; }
.height-tab span { font-size: 10px; line-height: 1.35; }
.width-picker { margin-top: 31px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.17); }
.width-picker > span { color: #9fc4d1; font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.width-picker > div { display: flex; align-items: baseline; flex-wrap: wrap; gap: 9px; margin-top: 12px; }
.width-picker b { display: grid; place-items: center; min-width: 47px; height: 39px; border: 1px solid rgba(134,203,220,.4); color: #fff; background: rgba(255,255,255,.04); font-size: 13px; }
.width-picker small { color: #8eb7c5; }
.width-picker p { margin: 10px 0 0; color: #8eb0bd; font-size: 11px; }
.height-visual { position: relative; overflow: hidden; min-height: 570px; border: 1px solid rgba(133, 204, 222, .25); background: linear-gradient(145deg, #e6ecee, #b8c5c9); }
.height-visual::before { content: ""; position: absolute; inset: 20px; z-index: 0; border: 1px solid rgba(255,255,255,.55); }
.height-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: opacity .2s ease, transform .35s ease; }
.height-visual.is-changing img { opacity: .25; transform: scale(.985); }
.height-number { position: absolute; z-index: 2; left: 24px; top: 24px; padding: 13px 16px; color: var(--deep); background: rgba(255,255,255,.92); box-shadow: 0 10px 28px rgba(7,46,65,.12); }
.height-number span, .height-number strong { display: block; }
.height-number span { color: var(--blue-dark); font-size: 8px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.height-number strong { margin-top: 2px; font-size: 18px; }
.measure-line { position: absolute; z-index: 2; right: 22px; top: 25%; bottom: 19%; width: 57px; border-right: 2px solid var(--orange); }
.measure-line::before, .measure-line::after { content: ""; position: absolute; right: -5px; width: 9px; height: 9px; border-right: 2px solid var(--orange); }
.measure-line::before { top: -1px; border-top: 2px solid var(--orange); transform: rotate(-45deg); }
.measure-line::after { bottom: -1px; border-bottom: 2px solid var(--orange); transform: rotate(45deg); }
.measure-line span { position: absolute; right: 12px; top: 50%; padding: 6px 9px; color: var(--deep); background: #fff; font-size: 11px; font-weight: 800; transform: translateY(-50%); white-space: nowrap; }

.construction { background: #f7fbfc; }
.construction-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 54px; }
.construction-card { min-height: 245px; padding: 25px 22px; border-top: 2px solid #92ccdc; background: #fff; }
.construction-card.featured { border-color: var(--orange); background: var(--pale); }
.construction-card > span { color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.construction-card h3 { margin: 37px 0 10px; color: var(--deep); font-size: 19px; }
.construction-card p { margin: 0; color: var(--muted); font-size: 13px; }
.passport-link { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 17px; margin-top: 20px; padding: 18px 21px; border: 1px solid #b9dce9; color: var(--deep); background: #fff; transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.passport-link:hover { border-color: var(--blue); box-shadow: 0 12px 28px rgba(10, 71, 95, .08); transform: translateY(-2px); }
.passport-type { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 4px; color: #fff; background: var(--blue-dark); font-size: 11px; font-weight: 900; letter-spacing: .08em; }
.passport-copy strong, .passport-copy small { display: block; }
.passport-copy strong { font-size: 15px; }
.passport-copy small { margin-top: 3px; color: var(--muted); font-size: 11px; }
.passport-action { color: var(--blue-dark); font-size: 12px; font-weight: 800; white-space: nowrap; }
.passport-action b { margin-left: 8px; font-size: 17px; }
.gallery-block { display: grid; grid-template-columns: minmax(0, 1fr) 116px; gap: 12px; margin-top: 28px; }
.gallery-main { position: relative; overflow: hidden; height: 560px; border-radius: 7px; background: #dbe4e7; }
.gallery-main > img { display: block; width: 100%; height: 100%; object-fit: cover; }
.gallery-caption { position: absolute; left: 0; right: 0; bottom: 0; padding: 75px 28px 24px; color: #fff; background: linear-gradient(transparent, rgba(6, 31, 48, .94)); }
.gallery-caption b, .gallery-caption span { display: block; }
.gallery-caption b { font-size: 18px; }
.gallery-caption span { margin-top: 4px; color: #c1dce5; font-size: 12px; }
.gallery-expand { position: absolute; right: 18px; top: 18px; display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid rgba(255, 255, 255, .55); border-radius: 50%; color: #fff; background: rgba(9, 43, 67, .85); cursor: pointer; transition: background .2s ease, transform .2s ease; }
.gallery-expand svg { display: block; width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.gallery-expand:hover { background: var(--blue); transform: scale(1.06); }
.gallery-thumbs { display: grid; grid-template-rows: repeat(5, 1fr); gap: 10px; min-height: 0; }
.gallery-thumb { overflow: hidden; min-height: 0; padding: 0; border: 2px solid transparent; border-radius: 4px; background: #dcecf1; cursor: pointer; }
.gallery-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.gallery-thumb:hover, .gallery-thumb.is-active { border-color: var(--blue); }
.lightbox { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 40px; background: rgba(4, 26, 41, .94); }
.lightbox[hidden] { display: none; }
.lightbox img { max-width: min(1100px, 94vw); max-height: 88vh; object-fit: contain; box-shadow: 0 20px 70px rgba(0, 0, 0, .55); }
.lightbox-close { position: absolute; right: 24px; top: 18px; width: 48px; height: 48px; border: 0; color: #fff; background: transparent; font-size: 42px; line-height: 1; cursor: pointer; }

.useful { position: relative; overflow: hidden; color: #fff; background: var(--deep-2); }
.useful .section-heading { position: relative; z-index: 1; }
.useful .section-heading h2 { color: #fff; }
.useful .section-heading > p { color: #a8c8d3; }
.useful-arc { position: absolute; right: -80px; top: -140px; width: 480px; height: 480px; border: 1px solid rgba(93, 190, 216, .28); border-radius: 50%; box-shadow: 0 0 0 35px var(--deep-2), 0 0 0 36px rgba(93,190,216,.16), 0 0 0 72px var(--deep-2), 0 0 0 73px rgba(93,190,216,.11); }
.useful-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 52px; background: rgba(139, 205, 222, .22); }
.useful-grid article { min-height: 255px; padding: 25px; background: #0a4057; }
.useful-grid span { color: var(--orange); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.useful-grid h3 { margin: 40px 0 10px; font-size: 18px; }
.useful-grid p { margin: 0; color: #b1cfd9; font-size: 13px; }
.medical-note { position: relative; z-index: 1; margin: 20px 0 0; padding: 18px 22px; border-left: 3px solid var(--orange); color: #9dbbc6; background: rgba(255,255,255,.04); font-size: 11px; }
.medical-note strong { color: #fff; }

.install { position: relative; overflow: hidden; }
.install::after { content: "90"; position: absolute; right: -30px; bottom: -80px; color: #f0f8fa; font-size: 320px; font-weight: 900; line-height: 1; letter-spacing: -.11em; pointer-events: none; }
.install-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; }
.install-copy > p:not(.eyebrow) { max-width: 420px; margin: 25px 0 32px; color: var(--muted); }
.install-steps { margin: 0; padding: 0; list-style: none; }
.install-steps li { display: grid; grid-template-columns: 74px 1fr; gap: 18px; padding: 21px 0; border-top: 1px solid var(--line); }
.install-steps li:last-child { border-bottom: 1px solid var(--line); }
.install-steps li > span { color: #abdce8; font-size: 32px; font-weight: 800; letter-spacing: -.06em; }
.install-steps h3 { margin: 2px 0 5px; color: var(--deep); font-size: 18px; }
.install-steps p { margin: 0; color: var(--muted); font-size: 13px; }

.buy-section { position: relative; overflow: hidden; color: #fff; background: linear-gradient(120deg, #0b4861, #08658f); }
.buy-section::after { content: ""; position: absolute; left: 44%; top: -190px; width: 620px; height: 620px; border: 1px solid rgba(161,227,242,.16); border-radius: 50%; }
.buy-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 440px; align-items: center; gap: 80px; }
.buy-section h2 { color: #fff; }
.buy-section .buy-grid > div:first-child > p:last-child { max-width: 560px; margin: 24px 0 0; color: #bcd9e4; font-size: 16px; }
.buy-card { padding: 30px; color: var(--ink); background: #fff; box-shadow: 0 25px 60px rgba(4,31,48,.25); }
.ozon-mark { display: inline-block; padding: 5px 9px; border-radius: 4px; color: #fff; background: #005bff; font-size: 16px; font-weight: 900; letter-spacing: .04em; }
.buy-card p { margin: 20px 0; color: #4f7182; }
.btn-ozon { width: 100%; color: #fff; background: #005bff; }
.btn-ozon:hover { background: #004ed8; transform: translateY(-2px); }
.buy-card small { display: block; margin-top: 13px; color: #7894a3; font-size: 9px; line-height: 1.45; }

.faq-section { position: relative; overflow: hidden; background: #f8fcfd; }
.faq-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .7fr 1.3fr; gap: 90px; }
.faq-list details { padding: 22px 0; border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; justify-content: space-between; gap: 20px; color: var(--deep); font-weight: 700; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; flex: 0 0 auto; color: var(--blue); font-size: 22px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 650px; margin: 14px 0 0; color: var(--muted); font-size: 14px; }
.faq-question-bg { position: absolute; z-index: 0; right: -75px; top: 24px; color: #e3f3f7; font-size: 440px; font-weight: 900; line-height: .8; letter-spacing: -.15em; opacity: .25; pointer-events: none; text-shadow: 20px 22px 0 #f1f9fb, -1px -1px 0 #cbeaf2; }

.footer { padding: 36px 0; color: #9bb5c1; background: var(--deep-2); }
.footer-inner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 38px; }
.footer .brand { color: #fff; }
.footer p { margin: 0; font-size: 11px; line-height: 1.7; }
.footer-links { display: grid; gap: 5px; color: #fff; font-size: 13px; text-align: right; }
.footer-links a:hover { color: #78def3; }
.footer-links span { color: #9bb5c1; font-size: 11px; }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .65s ease, transform .65s cubic-bezier(.2, .75, .25, 1); transition-delay: var(--reveal-delay, 0ms); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (min-width: 981px) {
  .hero-photo img { height: 500px; aspect-ratio: auto; object-fit: cover; object-position: 45% 60%; }
  .hero-ticker { margin-top: 22px; }
  .difference-layout { align-items: stretch; }
  .product-stage { height: 390px; }
  .product-stage img { height: 100%; aspect-ratio: auto; object-fit: cover; object-position: center 54%; }
  .compare-list { grid-template-rows: repeat(3, minmax(0, 1fr)); }
  .compare-card { min-height: 0; padding: 16px 20px; }
  .compare-card div > p:last-child { margin-top: 6px; }
}

@media (max-width: 980px) {
  .hero { padding-top: 0; }
  .nav { display: none; }
  .nav.nav-open { position: absolute; left: 0; right: 0; top: calc(100% + 1px); display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 10px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
  .nav.nav-open a { padding: 12px 10px; border-bottom: 1px solid #edf4f6; }
  .nav.nav-open a:last-child { border-bottom: 0; }
  .menu-toggle { display: grid; }
  .hero-grid { grid-template-columns: 1fr; gap: 50px; padding: 58px 0 58px; }
  .hero-copy { text-align: center; }
  .breadcrumbs, .hero-actions { justify-content: center; }
  .hero .lead { margin-inline: auto; }
  .hero-facts { max-width: 670px; margin-inline: auto; margin-top: 38px; text-align: left; }
  .hero-visual { max-width: 760px; margin-inline: auto; }
  .difference-layout, .sizes-grid, .install-grid, .buy-grid, .faq-grid { grid-template-columns: 1fr; }
  .difference-layout { max-width: 780px; margin-inline: auto; margin-top: 50px; }
  .sizes-grid { gap: 45px; }
  .height-visual { min-height: 620px; }
  .construction-grid, .useful-grid { grid-template-columns: repeat(2, 1fr); }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 22px; }
  .buy-grid { gap: 40px; }
  .buy-card { width: min(100%, 520px); }
  .faq-grid { gap: 38px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-links { grid-column: 1 / -1; grid-template-columns: repeat(3, auto); justify-content: space-between; text-align: left; }
}

@media (max-width: 720px) {
  .wrap { width: min(100% - 30px, 1160px); }
  .site-header { height: 70px; }
  .brand-logo { width: 42px; height: 42px; }
  .brand b { font-size: 17px; }
  .phone { font-size: 12px; }
  .header-email { font-size: 11px; }
  .section { padding: 72px 0; }
  .hero-grid { padding-top: 44px; }
  .hero h1 { font-size: clamp(40px, 11vw, 54px); }
  .lead { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; max-width: 420px; margin-inline: auto; margin-top: 28px; }
  .hero-visual { margin-inline: 12px; }
  .hero-photo img { height: clamp(250px, 75vw, 320px); aspect-ratio: auto; object-fit: cover; object-position: 42% 62%; }
  .angle-badge { right: -13px; top: -37px; width: 100px; height: 100px; border-width: 7px; }
  .angle-badge strong { font-size: 23px; }
  .made-badge { left: -12px; bottom: -18px; }
  .hero-ticker { overflow: hidden; justify-content: flex-start; white-space: nowrap; }
  .hero-ticker span:nth-of-type(4), .hero-ticker i:nth-of-type(3) { display: none; }
  .product-stage figcaption { left: 12px; right: 12px; bottom: 12px; }
  .compare-card { grid-template-columns: 50px 1fr; padding: 19px; }
  .height-tabs { gap: 6px; }
  .height-tab { display: grid; justify-items: center; gap: 5px; min-height: 94px; padding: 10px 5px; text-align: center; }
  .height-visual { min-height: 430px; }
  .construction-grid, .useful-grid { grid-template-columns: 1fr; margin-top: 34px; }
  .construction-card { min-height: 0; }
  .passport-link { grid-template-columns: auto 1fr; }
  .passport-action { grid-column: 2; }
  .gallery-block { grid-template-columns: 1fr; }
  .gallery-main { height: 410px; }
  .gallery-thumbs { display: flex; overflow-x: auto; gap: 8px; padding-bottom: 5px; scroll-snap-type: x mandatory; }
  .gallery-thumb { flex: 0 0 86px; height: 70px; scroll-snap-align: start; }
  .useful-grid article { min-height: 0; }
  .install-grid { gap: 42px; }
  .footer-inner { grid-template-columns: 1fr; align-items: start; gap: 22px; }
  .footer-links { grid-column: auto; grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 500px) {
  .brand small { display: none; }
  .header-contact { margin-left: auto; }
  .header-email { display: none; }
  .phone { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; color: #fff; background: var(--blue); font-size: 0; }
  .phone:hover, .phone:focus-visible { color: #fff; }
  .phone-icon { width: 19px; height: 19px; stroke-width: 2.1; }
  .phone-number { display: none; }
  .nav-wrap { gap: 8px; }
  .breadcrumbs { margin-bottom: 14px; }
  .eyebrow { font-size: 10px; }
  .hero-facts { grid-template-columns: 1fr; gap: 13px; max-width: 330px; }
  .hero-photo img { height: min(75vw, 300px); }
  .made-badge { padding: 11px 13px; }
  .made-badge small { font-size: 7px; }
  .difference-layout { gap: 23px; }
  .compare-card { grid-template-columns: 43px 1fr; gap: 8px; padding: 16px 13px; }
  .compare-index { font-size: 24px; }
  .passport-link { gap: 12px; padding: 15px; }
  .passport-type { width: 43px; height: 43px; }
  .height-tab strong { font-size: 25px; }
  .height-visual { min-height: 340px; }
  .gallery-main { height: 320px; }
  .gallery-caption { padding: 60px 17px 16px; }
  .gallery-caption b { font-size: 15px; }
  .lightbox { padding: 18px; }
  .lightbox-close { right: 8px; top: 8px; }
  .install-steps li { grid-template-columns: 58px 1fr; }
  .buy-card { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}