:root {
  --blue: #118bc1;
  --blue-dark: #08658f;
  --deep: #0b4861;
  --deep-2: #08394f;
  --ink: #173443;
  --pale: #e6fcff;
  --line: #cfe2e8;
  --orange: #ffb250;
  --muted: #5e7b89;
  --white: #fff;
  --shadow: 0 24px 70px rgba(8, 49, 70, .16);
}

* { box-sizing: border-box; }
html { overflow-x: hidden; overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; overflow-x: hidden; overflow-x: clip; color: var(--ink); background: #fff; font-family: Inter, Arial, sans-serif; font-size: 16px; line-height: 1.55; }
body.lightbox-open { overflow: hidden; }
img, video { display: block; 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(1180px, calc(100% - 48px)); margin-inline: auto; }
.section { padding: 112px 0; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 300; padding: 12px 16px; border-radius: 4px; color: #fff; background: var(--deep); }
.skip-link:focus { top: 12px; }

















.hero { position: relative; overflow: hidden; color: #fff; background: linear-gradient(126deg, #052f42 0%, #0b4861 56%, #08658f 100%); }
.hero::before { content: ""; position: absolute; right: -220px; top: -260px; width: 760px; height: 760px; border: 1px solid rgba(144,224,243,.15); border-radius: 50%; box-shadow: 0 0 0 52px rgba(8,72,97,.26), 0 0 0 53px rgba(151,224,240,.08); }
.hero::after { content: "ЖБИ"; position: absolute; left: -32px; bottom: -84px; color: rgba(255,255,255,.025); font-size: 270px; font-weight: 900; line-height: 1; letter-spacing: -.09em; }
.hero-gridlines { position: absolute; inset: 0; opacity: .055; background-image: linear-gradient(rgba(255,255,255,.75) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.75) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(90deg, #000 0%, transparent 46%); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 62px; min-height: 690px; padding: 64px 0 56px; }
.breadcrumbs { display: flex; gap: 9px; margin-bottom: 30px; color: #8ec5d4; font-size: 12px; }
.breadcrumbs a:hover { color: #fff; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--blue-dark); font-size: 11px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow > span { width: 34px; height: 2px; background: currentColor; }
.eyebrow.light { color: #80d5e9; }
.hero h1, h2 { margin: 0; color: var(--deep); font-weight: 850; line-height: .98; letter-spacing: -.048em; }
.hero h1 { max-width: 680px; color: #fff; font-size: clamp(48px, 5.2vw, 76px); }
h2 { max-width: 790px; font-size: clamp(40px, 4.3vw, 62px); }
.hero-slogan { margin: 20px 0 0; color: var(--orange); font-size: 18px; font-weight: 850; letter-spacing: .01em; }
.lead { max-width: 650px; margin: 15px 0 0; color: #c8e1e8; font-size: 18px; line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.btn { display: inline-flex; align-items: center; justify-content: space-between; gap: 22px; min-width: 210px; padding: 17px 20px; border: 1px solid transparent; font-size: 14px; font-weight: 850; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-accent { color: #173443; background: var(--orange); }
.btn-accent:hover { background: #ffc774; }
.btn-line { color: #fff; border-color: rgba(255,255,255,.34); background: rgba(255,255,255,.04); }
.btn-line:hover { border-color: #fff; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 42px; border: 1px solid rgba(172,224,237,.18); background: rgba(172,224,237,.18); }
.hero-facts div { padding: 15px 14px; background: rgba(4,44,61,.74); }
.hero-facts strong, .hero-facts span { display: block; }
.hero-facts strong { color: #fff; font-size: 13px; }
.hero-facts span { margin-top: 5px; color: #a2cbd5; font-size: 12px; line-height: 1.4; }
.hero-visual { position: relative; padding: 14px 14px 57px; border: 1px solid rgba(193,235,244,.17); }
.hero-photo { position: relative; margin: 0; overflow: hidden; background: #0d3140; box-shadow: 0 32px 66px rgba(0,20,30,.33); }
.hero-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 43%, rgba(2,23,32,.77) 100%); pointer-events: none; }
.hero-photo img { width: 100%; height: 485px; object-fit: cover; object-position: 46% center; }
.hero-photo figcaption { position: absolute; z-index: 2; left: 24px; right: 24px; bottom: 22px; }
.hero-photo figcaption span, .hero-photo figcaption b { display: block; }
.hero-photo figcaption span { color: #72d3e8; font-size: 10px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.hero-photo figcaption b { margin-top: 6px; color: #fff; font-size: 15px; line-height: 1.4; }
.hero-seal { position: absolute; right: -32px; top: -36px; display: grid; place-content: center; width: 120px; height: 120px; border: 9px solid var(--orange); border-radius: 50%; color: var(--deep-2); background: #fff; box-shadow: var(--shadow); text-align: center; transform: rotate(8deg); }
.hero-seal b { font-size: 18px; line-height: 1; }
.hero-seal span { color: var(--orange); font-size: 18px; font-weight: 900; line-height: 1; }
.hero-note { position: absolute; left: -24px; bottom: 8px; display: flex; align-items: center; gap: 12px; max-width: 305px; padding: 13px 16px; color: #c9e6ee; background: var(--deep-2); box-shadow: 0 14px 34px rgba(0,30,43,.28); font-size: 12px; line-height: 1.45; }
.hero-note i { flex: 0 0 auto; width: 10px; height: 10px; border: 3px solid var(--orange); border-radius: 50%; }
.hero-ticker { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; min-height: 52px; border-top: 1px solid rgba(183,228,239,.17); color: #8cc7d5; font-size: 10px; font-weight: 900; letter-spacing: .14em; }
.hero-ticker i { color: var(--orange); font-size: 16px; font-style: normal; }

.standard-strip { border-bottom: 1px solid var(--line); background: #fff; }
.standard-inner { display: grid; grid-template-columns: .65fr 1.3fr auto; align-items: center; gap: 42px; min-height: 104px; }
.standard-inner div { display: flex; align-items: center; gap: 13px; }
.standard-inner b { color: var(--deep); font-size: 15px; }
.standard-inner div span { max-width: 175px; color: var(--muted); font-size: 12px; line-height: 1.45; }
.standard-inner p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.standard-inner a { color: var(--blue-dark); font-size: 13px; font-weight: 850; white-space: nowrap; }
.standard-inner a span { margin-left: 10px; }

.section-heading { display: grid; grid-template-columns: 1.35fr .65fr; align-items: end; gap: 80px; }
.section-heading > p { max-width: 470px; margin: 0 0 4px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.problem-section { background: linear-gradient(180deg, #fff 0%, var(--pale) 100%); }
.benefit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 58px; }
.benefit-card { position: relative; min-height: 280px; padding: 30px 26px; overflow: hidden; border: 1px solid var(--line); background: rgba(255,255,255,.74); }
.benefit-card::after { content: ""; position: absolute; right: -45px; bottom: -48px; width: 130px; height: 130px; border: 1px solid #d8edf2; border-radius: 50%; }
.benefit-card > span { color: #78adba; font-size: 11px; font-weight: 900; }
.benefit-card h3 { margin: 46px 0 13px; color: var(--deep); font-size: 20px; line-height: 1.22; }
.benefit-card p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.62; }
.benefit-card.featured { color: #fff; border-color: var(--deep); background: var(--deep); box-shadow: var(--shadow); transform: translateY(-12px); }
.benefit-card.featured > span { color: var(--orange); }
.benefit-card.featured h3 { color: #fff; }
.benefit-card.featured p { color: #bad7df; }
.benefit-card.featured::after { border-color: rgba(255,255,255,.14); box-shadow: 0 0 0 18px var(--deep), 0 0 0 19px rgba(255,255,255,.08); }

.construction { position: relative; overflow: hidden; color: #fff; background: var(--deep-2); }
.construction::before { content: ""; position: absolute; left: -230px; top: -250px; width: 610px; height: 610px; border: 1px solid rgba(134,210,228,.12); border-radius: 50%; box-shadow: 0 0 0 54px var(--deep-2), 0 0 0 55px rgba(134,210,228,.08); }
.construction-grid { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 90px; }
.construction-visual { position: relative; min-width: 0; }
.construction-visual figure { margin: 0; padding: 18px; background: #fff; box-shadow: 0 34px 70px rgba(0,20,30,.3); }
.construction-visual img { width: 100%; height: 430px; object-fit: contain; }
.construction-visual figcaption { display: flex; justify-content: space-between; gap: 18px; padding: 14px 4px 0; color: #617f8c; font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.construction-visual figcaption span { color: var(--blue-dark); font-weight: 900; }
.layer-chip { position: absolute; display: flex; align-items: center; gap: 9px; min-width: 215px; padding: 11px 13px; color: var(--ink); background: #fff; box-shadow: 0 13px 30px rgba(0,20,30,.22); font-size: 12px; }
.layer-chip b { color: var(--blue); }
.chip-one { left: -24px; top: 50px; }
.chip-two { right: -28px; top: 170px; }
.chip-three { left: 32px; bottom: 56px; }
.construction-copy h2 { color: #fff; }
.construction-lead { margin: 27px 0 34px; color: #b7d1da; font-size: 16px; line-height: 1.72; }
.construction-points { display: grid; }
.construction-points article { display: grid; grid-template-columns: 45px 1fr; gap: 16px; padding: 19px 0; border-top: 1px solid rgba(159,215,229,.18); }
.construction-points article:last-child { border-bottom: 1px solid rgba(159,215,229,.18); }
.construction-points article > b { color: var(--orange); font-size: 11px; }
.construction-points h3 { margin: 0 0 7px; color: #fff; font-size: 17px; }
.construction-points p { margin: 0; color: #aed0d9; font-size: 14px; line-height: 1.55; }

.products { background: #fff; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 64px; }
.product-card { overflow: hidden; border: 1px solid var(--line); background: #fff; transition: box-shadow .25s ease, transform .25s ease; }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.product-card-wide { grid-column: span 3; display: grid; grid-template-columns: 1.18fr .82fr; min-height: 430px; }
.product-card-wide.reverse { grid-template-columns: .82fr 1.18fr; }
.product-card-wide.reverse .product-image { order: 2; }
.product-card-wide.reverse .product-copy { order: 1; }
.product-image { position: relative; display: grid; place-items: center; min-height: 285px; overflow: hidden; background: linear-gradient(145deg, #f7fbfc, #e8f5f8); }
.product-card-wide .product-image { min-height: 430px; }
.product-image::before { content: ""; position: absolute; width: 380px; height: 380px; border: 1px solid #d2e8ed; border-radius: 50%; box-shadow: 0 0 0 30px transparent, 0 0 0 31px #e3f1f4; }
.product-image img { position: relative; z-index: 1; width: 92%; height: 92%; object-fit: contain; mix-blend-mode: multiply; }
.product-image.generated img { width: 100%; height: 100%; mix-blend-mode: normal; }
.product-image > span { position: absolute; z-index: 2; left: 18px; top: 18px; display: grid; place-items: center; min-width: 52px; height: 52px; padding: 0 9px; border-radius: 50%; color: #fff; background: var(--deep); font-size: 12px; font-weight: 900; }
.product-copy { display: flex; flex-direction: column; padding: 38px; }
.product-kicker { margin: 0 0 10px !important; color: var(--blue-dark) !important; font-size: 11px !important; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.product-copy h3 { margin: 0 0 15px; color: var(--deep); font-size: 27px; line-height: 1.1; }
.product-copy > p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.62; }
.size-list { display: flex; flex-wrap: wrap; gap: 7px; margin: 24px 0; padding: 0; list-style: none; }
.size-list li, .size-text { padding: 8px 10px; color: var(--deep); border: 1px solid var(--line); background: var(--pale); font-size: 12px !important; font-weight: 800; }
.size-text { margin: 20px 0 !important; line-height: 1.6 !important; }
.product-copy a { display: flex; justify-content: space-between; gap: 20px; margin-top: auto; padding-top: 18px; color: var(--blue-dark); border-top: 1px solid var(--line); font-size: 14px; font-weight: 900; }
.compact .product-copy { min-height: 315px; padding: 28px; }
.compact .product-copy h3 { font-size: 22px; }
.product-note { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 25px; margin-top: 18px; padding: 22px 25px; color: #bcd7df; background: var(--deep); }
.product-note > b { color: var(--orange); font-size: 11px; text-transform: uppercase; letter-spacing: .12em; }
.product-note p { margin: 0; font-size: 14px; line-height: 1.55; }
.product-note a { color: #fff; font-size: 14px; font-weight: 850; white-space: nowrap; }

.production { color: #fff; background: linear-gradient(140deg, #062f41, #0b4861); }
.light-heading h2 { color: #fff; }
.light-heading > p { color: #acd0da; }
.gallery-block { display: grid; grid-template-columns: 1fr 124px; gap: 12px; margin-top: 60px; }
.gallery-main { position: relative; height: 650px; overflow: hidden; background: #082c3b; }
.gallery-main::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(2,20,28,.88) 100%); pointer-events: none; }
.gallery-main > img { width: 100%; height: 100%; object-fit: cover; object-position: center; transition: opacity .15s ease, transform .45s ease; }
.gallery-main.is-changing > img { opacity: .25; transform: scale(1.02); }
.gallery-expand { position: absolute; z-index: 3; right: 20px; top: 20px; display: grid; place-items: center; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.5); color: #fff; background: rgba(5,39,52,.55); font-size: 20px; cursor: pointer; }
.gallery-caption { position: absolute; z-index: 2; left: 30px; right: 30px; bottom: 28px; }
.gallery-caption span, .gallery-caption b, .gallery-caption p { display: block; }
.gallery-caption span { color: var(--orange); font-size: 11px; font-weight: 900; letter-spacing: .13em; }
.gallery-caption b { margin-top: 7px; color: #fff; font-size: 21px; line-height: 1.3; }
.gallery-caption p { max-width: 650px; margin: 7px 0 0; color: #cde3e9; font-size: 14px; line-height: 1.5; }
.gallery-thumbs { display: grid; grid-template-rows: repeat(6, 1fr); gap: 8px; }
.gallery-thumb { position: relative; min-height: 0; overflow: hidden; padding: 0; border: 2px solid transparent; background: #0b3545; cursor: pointer; opacity: .58; transition: opacity .2s ease, border-color .2s ease; }
.gallery-thumb:hover, .gallery-thumb.is-active { border-color: var(--orange); opacity: 1; }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

.installation { background: linear-gradient(180deg, #fff 0%, var(--pale) 100%); }
.installation-grid { display: grid; grid-template-columns: 1fr .62fr; align-items: center; gap: 80px; }
.video-copy > p:not(.eyebrow) { margin: 25px 0; color: var(--muted); font-size: 16px; line-height: 1.7; }
.video-copy ul { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; color: var(--deep); font-size: 14px; font-weight: 700; }
.video-copy li::before { content: "✓"; margin-right: 10px; color: var(--blue); font-weight: 900; }
.video-card { width: min(100%,430px); justify-self: end; padding: 12px; background: #fff; box-shadow: var(--shadow); }
.video-card video { width: 100%; max-height: 680px; aspect-ratio: 9 / 16; background: #082d3c; object-fit: contain; }
.video-card > div { padding: 18px 14px 10px; }
.video-card span { display: flex; align-items: center; gap: 7px; color: var(--blue-dark); font-size: 10px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.video-card span i { width: 7px; height: 7px; border-radius: 50%; background: #e14b3c; box-shadow: 0 0 0 4px rgba(225,75,60,.12); }
.video-card b { display: block; margin-top: 7px; color: var(--deep); font-size: 16px; }
.video-card p { margin: 4px 0 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 76px; border-bottom: 1px solid var(--line); }
.process-steps article { min-height: 230px; padding: 30px 27px; border-top: 1px solid var(--line); border-right: 1px solid var(--line); }
.process-steps article:first-child { border-left: 1px solid var(--line); }
.process-steps b { color: var(--blue); font-size: 11px; }
.process-steps h3 { margin: 44px 0 12px; color: var(--deep); font-size: 18px; }
.process-steps p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }

.choice-section { background: #fff; }
.choice-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 85px; }
.choice-grid > div:first-child > p:not(.eyebrow) { margin: 25px 0 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.choice-cards { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.choice-cards article { display: flex; flex-direction: column; min-width: 0; min-height: 390px; padding: 28px 22px; border-right: 1px solid var(--line); }
.choice-cards article:last-child { border-right: 0; }
.choice-cards article > span { color: #75a9b6; font-size: 10px; font-weight: 900; }
.choice-cards h3 { min-height: 58px; margin: 55px 0 16px; color: var(--deep); font-size: 18px; line-height: 1.25; }
.choice-cards p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.choice-cards a { margin-top: auto; padding-top: 18px; color: var(--blue-dark); border-top: 1px solid var(--line); font-size: 13px; font-weight: 850; }
.choice-cards article.active { color: #fff; border-color: var(--deep); background: var(--deep); transform: translateY(-12px); box-shadow: var(--shadow); }
.choice-cards article.active > span, .choice-cards article.active a { color: var(--orange); }
.choice-cards article.active h3 { color: #fff; }
.choice-cards article.active p { color: #b9d5dd; }
.choice-cards article.active a { border-color: rgba(255,255,255,.16); }

.request-section { position: relative; overflow: hidden; color: #fff; background: var(--deep-2); }
.request-section::before { content: ""; position: absolute; left: -160px; bottom: -220px; width: 540px; height: 540px; border: 1px solid rgba(130,210,230,.12); border-radius: 50%; box-shadow: 0 0 0 36px var(--deep-2), 0 0 0 37px rgba(130,210,230,.08); }
.request-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .9fr 1.1fr; align-items: start; gap: 80px; }
.request-section h2 { color: #fff; }
.request-lead { max-width: 530px; margin: 25px 0 22px; color: #c7e0e7; font-size: 16px; line-height: 1.65; }
.request-checklist { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 20px; margin: 0 0 24px; padding: 0; list-style: none; color: #d5e8ed; font-size: 14px; line-height: 1.45; }
.request-checklist li::before { content: "✓"; margin-right: 8px; color: var(--orange); font-weight: 900; }
.shop-cta { display: flex; align-items: center; justify-content: space-between; max-width: 520px; margin-bottom: 24px; padding: 16px 18px; color: #173443; background: var(--orange); transition: background .2s ease, transform .2s ease; }
.shop-cta span small, .shop-cta span b { display: block; }
.shop-cta small { font-size: 10px; font-weight: 900; letter-spacing: .12em; }
.shop-cta b { margin-top: 3px; font-size: 15px; }
.shop-cta i { font-size: 22px; font-style: normal; }
.shop-cta:hover { background: #ffc66f; transform: translateY(-2px); }
.contact-lines { display: grid; gap: 9px; color: #d8edf2; }
.contact-lines a { width: fit-content; font-size: 16px; font-weight: 800; }
.contact-lines a:hover { color: var(--orange); }
.contact-lines span { color: #a7c2ca; font-size: 14px; }
.request-form { min-height: 430px; padding: 24px; color: var(--ink); background: #fff; box-shadow: 0 26px 60px rgba(0,21,31,.27); }
.request-form noscript { display: block; padding: 20px; }
.request-form noscript a { color: var(--blue-dark); font-weight: 800; }

.faq-section { position: relative; overflow: hidden; background: var(--pale); }
.faq-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .7fr 1.3fr; gap: 90px; }
.faq-grid .muted { max-width: 420px; margin: 24px 0 0; color: var(--muted); font-size: 16px; line-height: 1.65; }
.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-size: 17px; line-height: 1.4; font-weight: 750; 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: 670px; margin: 14px 0 0; color: var(--muted); font-size: 15px; line-height: 1.65; }
.faq-question-bg { position: absolute; right: -75px; top: 24px; color: #d8eff4; font-size: 440px; font-weight: 900; line-height: .8; letter-spacing: -.15em; opacity: .3; pointer-events: none; text-shadow: 20px 22px 0 #edf9fb, -1px -1px 0 #c5e7ef; }









.lightbox[hidden] { display: none; }
.lightbox { position: fixed; z-index: 200; inset: 0; display: grid; place-items: center; padding: 36px; background: rgba(3,24,33,.94); }
.lightbox img { max-width: min(94vw,1500px); max-height: 90vh; object-fit: contain; }
.lightbox-close { position: fixed; right: 24px; top: 18px; display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; color: #fff; background: transparent; font-size: 31px; cursor: pointer; }
.reveal { opacity: 0; transform: translateY(25px); transition: opacity .62s ease, transform .62s cubic-bezier(.2,.75,.25,1); transition-delay: var(--reveal-delay, 0ms); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  
  .hero-grid { gap: 36px; }
  .hero h1 { font-size: clamp(46px, 5.4vw, 67px); }
  .hero-photo img { height: 455px; }
  .benefit-card { padding: 26px 21px; }
  .construction-grid { gap: 54px; }
  .product-copy { padding: 30px; }
  .choice-grid { gap: 52px; }
}

@media (max-width: 980px) {
  
  
  
  
  
  .hero-grid { grid-template-columns: 1fr; gap: 45px; min-height: 0; padding: 58px 0 55px; }
  .hero-copy { max-width: 760px; margin-inline: auto; text-align: center; }
  .breadcrumbs, .hero-actions, .hero-copy .eyebrow { justify-content: center; }
  .lead { margin-inline: auto; }
  .hero-facts { max-width: 690px; margin-inline: auto; margin-top: 40px; text-align: left; }
  .hero-visual { width: min(100%,760px); margin-inline: auto; }
  .hero-photo img { height: 500px; }
  .standard-inner { grid-template-columns: 1fr auto; gap: 18px 35px; padding: 20px 0; }
  .standard-inner p { grid-column: 1 / -1; grid-row: 2; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 24px; }
  .benefit-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-card.featured { transform: none; }
  .construction-grid, .installation-grid, .choice-grid, .request-grid, .faq-grid { grid-template-columns: 1fr; }
  .construction-grid { max-width: 780px; }
  .construction-copy { margin-top: 18px; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .product-card-wide { grid-column: span 2; }
  .compact:last-child { grid-column: span 2; }
  .product-note { grid-template-columns: auto 1fr; }
  .product-note a { grid-column: 2; }
  .gallery-main { height: 590px; }
  .installation-grid, .choice-grid, .request-grid { gap: 48px; }
  .video-copy { max-width: 720px; }
  .video-card { justify-self: center; }
  .process-steps { grid-template-columns: repeat(2, 1fr); border-bottom: 0; }
  .process-steps article { border-bottom: 1px solid var(--line); }
  .process-steps article:nth-child(odd) { border-left: 1px solid var(--line); }
  .choice-cards { max-width: 780px; }
  .choice-cards article.active { transform: none; }
  .request-form { width: min(100%,730px); }
  .faq-grid { gap: 38px; }
  
  
}

@media (max-width: 720px) {
  .wrap { width: min(100% - 30px,1180px); }
  .section { padding: 78px 0; }
  
  
  
  
  
  .hero-grid { padding-top: 45px; }
  .hero h1 { font-size: clamp(39px, 10.8vw, 57px); }
  .lead { font-size: 16px; }
  .hero-slogan { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; max-width: 430px; margin-inline: auto; margin-top: 28px; }
  .hero-visual { padding: 10px 10px 48px; }
  .hero-photo img { height: clamp(340px,72vw,480px); }
  .hero-seal { right: -8px; top: -28px; width: 104px; height: 104px; border-width: 7px; }
  .hero-seal b { font-size: 15px; }
  .hero-note { left: -5px; bottom: 2px; }
  .hero-ticker { overflow: hidden; justify-content: flex-start; gap: 28px; white-space: nowrap; }
  .hero-ticker span:nth-of-type(4), .hero-ticker i:nth-of-type(3) { display: none; }
  .standard-inner { display: grid; grid-template-columns: 1fr; gap: 10px; padding: 22px 0; }
  .standard-inner p, .standard-inner a { grid-column: auto; grid-row: auto; }
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-card { min-height: 0; }
  .benefit-card h3 { margin-top: 32px; }
  .construction-visual img { height: 350px; }
  .layer-chip { position: static; display: inline-flex; min-width: 0; margin: 8px 5px 0 0; box-shadow: none; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card-wide, .product-card-wide.reverse { grid-column: auto; grid-template-columns: 1fr; }
  .product-card-wide.reverse .product-image, .product-card-wide.reverse .product-copy { order: initial; }
  .compact:last-child { grid-column: auto; }
  .product-card-wide .product-image { min-height: 320px; }
  .product-card-wide .product-copy, .compact .product-copy { min-height: 0; }
  .product-note { grid-template-columns: 1fr; }
  .product-note a { grid-column: auto; }
  .gallery-block { grid-template-columns: 1fr; }
  .gallery-main { height: 500px; }
  .gallery-thumbs { display: flex; overflow-x: auto; gap: 8px; padding-bottom: 6px; scroll-snap-type: x mandatory; }
  .gallery-thumb { flex: 0 0 96px; height: 76px; scroll-snap-align: start; }
  .process-steps { grid-template-columns: 1fr; }
  .process-steps article, .process-steps article:nth-child(odd) { border-left: 1px solid var(--line); }
  .choice-cards { grid-template-columns: 1fr; }
  .choice-cards article { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .choice-cards article:last-child { border-bottom: 0; }
  .choice-cards h3 { min-height: 0; margin-top: 35px; }
  .choice-cards a { margin-top: 32px; }
  .request-checklist { grid-template-columns: 1fr; }
  .request-form { padding: 14px; }
  
  
}

@media (max-width: 500px) {
  
  
  
  
  
  
  
  .breadcrumbs { justify-content: flex-start; overflow: hidden; margin-bottom: 16px; text-align: left; white-space: nowrap; }
  .eyebrow { font-size: 10px; letter-spacing: .12em; }
  .hero-copy { text-align: left; }
  .hero-copy .eyebrow, .hero-actions { justify-content: flex-start; }
  .hero-facts { grid-template-columns: 1fr; gap: 10px; max-width: none; }
  .hero-photo img { height: 315px; }
  .hero-photo figcaption { left: 16px; right: 16px; bottom: 16px; }
  .hero-seal { right: -2px; top: -24px; width: 88px; height: 88px; }
  .hero-note { display: none; }
  .hero-visual { padding-bottom: 5px; }
  .construction-visual figure { padding: 8px; }
  .construction-visual img { height: 280px; }
  .construction-visual figcaption { display: block; }
  .construction-visual figcaption span { display: block; margin-top: 5px; }
  .product-copy { padding: 24px 20px; }
  .product-image, .product-card-wide .product-image { min-height: 250px; }
  .gallery-main { height: 390px; }
  .gallery-caption { left: 17px; right: 17px; bottom: 16px; }
  .gallery-caption b { font-size: 16px; }
  .gallery-caption p { font-size: 14px; }
  .video-card { padding: 7px; }
  .process-steps article { min-height: 200px; padding: 25px 21px; }
  .shop-cta b { font-size: 14px; }
  .lightbox { padding: 18px; }
  .lightbox-close { right: 8px; top: 8px; }
}

@media (max-width: 360px) {
  .hero h1 { font-size: 34px; letter-spacing: -.045em; }
  .hero-copy { min-width: 0; }
}

@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; }
}