:root {
  --bg: #f3f1ec;
  --paper: #ffffff;
  --ink: #17191d;
  --muted: #666b72;
  --line: rgba(23, 25, 29, .14);
  --dark: #17191d;
  --dark-2: #22252a;
  --orange: #ff5b22;
  --orange-2: #ff743f;
  --cream: #f6f3ed;
  --radius: 6px;
  --container: 1240px;
  --shadow: 0 26px 70px rgba(12, 14, 18, .13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--bg); font-family: "Segoe UI", Arial, sans-serif; line-height: 1.6; overflow-x: hidden; }
body.modal-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
img, svg { max-width: 100%; }
.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.section { padding: 112px 0; }
.section-dark { color: #fff; background: var(--dark); }
.noise { position: fixed; inset: 0; pointer-events: none; opacity: .035; z-index: 100; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E"); }

.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: 82px; color: #fff; border-bottom: 1px solid rgba(255,255,255,.12); transition: background .25s ease, height .25s ease, box-shadow .25s ease; }
.site-header.scrolled { height: 72px; background: rgba(23,25,29,.96); box-shadow: 0 12px 35px rgba(0,0,0,.18); backdrop-filter: blur(15px); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 13px; flex: 0 0 auto; }
.brand-mark { width: 42px; height: 42px; color: var(--orange); display: grid; place-items: center; }
.brand-mark svg { width: 100%; height: 100%; fill: currentColor; }
.brand-mark .brand-cut { fill: var(--dark); }
.brand-text { display: grid; line-height: 1.1; }
.brand-text strong { font-family: "Arial Black", "Segoe UI", Arial, sans-serif; font-size: 17px; letter-spacing: .06em; font-weight: 400; }
.brand-text small { color: rgba(255,255,255,.55); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; margin-top: 5px; }
.main-nav { display: flex; align-items: center; gap: 27px; margin-left: auto; }
.main-nav a { color: rgba(255,255,255,.76); font-size: 13px; font-weight: 600; transition: color .2s ease; }
.main-nav a:hover { color: #fff; }
.header-phone { display: grid; justify-items: end; line-height: 1.25; }
.header-phone span { color: rgba(255,255,255,.5); font-size: 10px; text-transform: uppercase; letter-spacing: .15em; }
.header-phone strong { font-size: 14px; }
.menu-toggle { display: none; width: 42px; height: 42px; background: transparent; border: 0; padding: 8px; }
.menu-toggle span { display: block; height: 2px; margin: 6px 0; background: #fff; transition: .25s ease; }

.hero { min-height: 850px; position: relative; overflow: hidden; padding-top: 82px; }
.hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 75% 45%, rgba(255,91,34,.12), transparent 24%), linear-gradient(115deg, rgba(255,255,255,.025), transparent 46%); }
.hero-grid { position: relative; min-height: 690px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 48px; padding-top: 70px; padding-bottom: 70px; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: rgba(255,255,255,.57); font-size: 11px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow span { width: 28px; height: 2px; background: var(--orange); }
.eyebrow.dark { color: #72767e; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: "Arial Black", "Segoe UI", Arial, sans-serif; font-weight: 400; line-height: 1.04; letter-spacing: -.025em; }
h1 { max-width: 820px; font-size: clamp(47px, 5.4vw, 82px); margin: 25px 0 28px; text-transform: uppercase; }
h1 em { display: block; color: var(--orange); font-style: normal; }
.hero-copy > p { max-width: 690px; color: rgba(255,255,255,.66); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.btn { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid transparent; border-radius: 2px; padding: 0 25px; font-size: 13px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--orange); border-color: var(--orange); box-shadow: 0 14px 30px rgba(255,91,34,.2); }
.btn-primary:hover { background: var(--orange-2); border-color: var(--orange-2); }
.btn-ghost { color: #fff; border-color: rgba(255,255,255,.24); background: transparent; }
.btn-ghost:hover { border-color: rgba(255,255,255,.55); }
.btn-dark { color: #fff; background: var(--dark); }
.btn-block { width: 100%; }
.hero-trust { display: flex; gap: 0; margin-top: 72px; }
.hero-trust div { min-width: 145px; padding: 0 28px; border-left: 1px solid rgba(255,255,255,.12); }
.hero-trust div:first-child { padding-left: 0; border-left: 0; }
.hero-trust strong { display: block; color: #fff; font-family: "Arial Black", "Segoe UI", Arial, sans-serif; font-size: 22px; font-weight: 400; }
.hero-trust span { display: block; max-width: 120px; color: rgba(255,255,255,.45); font-size: 10px; line-height: 1.45; text-transform: uppercase; letter-spacing: .08em; }
.hero-visual { position: relative; height: 600px; isolation: isolate; }
.hero-grid-lines { position: absolute; inset: 0; opacity: .13; background-image: linear-gradient(rgba(255,255,255,.25) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.25) 1px, transparent 1px); background-size: 46px 46px; transform: perspective(600px) rotateY(-14deg) rotateX(3deg); }
.orange-beam { position: absolute; z-index: -1; width: 130px; height: 560px; right: 23%; top: 5%; background: linear-gradient(var(--orange), #ff7b31); transform: skewX(-17deg); box-shadow: 0 0 60px rgba(255,91,34,.25); }
.concrete-stack { position: absolute; left: 4%; bottom: 9%; width: 470px; transform: rotate(-8deg) skewX(-3deg); filter: drop-shadow(0 35px 30px rgba(0,0,0,.35)); }
.concrete-stack span { display: block; height: 92px; margin-top: -12px; border: 1px solid rgba(255,255,255,.18); background: linear-gradient(165deg, #8d9298 0%, #50545b 55%, #383c42 100%); clip-path: polygon(7% 0, 100% 16%, 93% 100%, 0 84%); box-shadow: inset 0 8px 14px rgba(255,255,255,.08); }
.concrete-stack span:nth-child(2) { transform: translateX(10px); }
.concrete-stack span:nth-child(3) { transform: translateX(20px); }
.concrete-ring { position: absolute; border-radius: 50%; border: 40px solid #666b72; box-shadow: inset 0 0 0 1px rgba(255,255,255,.2), 0 30px 35px rgba(0,0,0,.3); background: #2d3035; }
.ring-a { width: 220px; height: 220px; right: 0; top: 17%; transform: rotateX(62deg) rotateZ(-12deg); }
.ring-b { width: 170px; height: 170px; right: 8%; top: 39%; transform: rotateX(62deg) rotateZ(7deg); opacity: .8; }
.hero-badge { position: absolute; right: 1%; bottom: 7%; width: 230px; padding: 20px 22px; color: #fff; border-left: 3px solid var(--orange); background: rgba(23,25,29,.84); box-shadow: var(--shadow); backdrop-filter: blur(10px); }
.hero-badge small, .hero-badge span { display: block; color: rgba(255,255,255,.5); font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.hero-badge strong { display: block; margin: 2px 0 8px; font-size: 19px; text-transform: uppercase; }
.hero-marquee { height: 78px; display: flex; align-items: center; overflow: hidden; color: rgba(255,255,255,.15); border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); font-family: "Arial Black", "Segoe UI", Arial, sans-serif; font-size: 29px; white-space: nowrap; }
.hero-marquee div { min-width: max-content; animation: marquee 24s linear infinite; }
@keyframes marquee { to { transform: translateX(-50%); } }

.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 48px; }
.section-heading h2, .custom-copy h2, .delivery-copy h2, .about-copy h2, .faq-heading h2, .request-copy h2, .contacts-main h2 { max-width: 780px; margin: 16px 0 0; font-size: clamp(34px, 4.2vw, 58px); text-transform: uppercase; }
.section-heading > p { max-width: 420px; margin: 0 0 5px; color: var(--muted); }
.catalog-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 25px; }
.catalog-search { position: relative; flex: 1; max-width: 480px; }
.catalog-search svg { position: absolute; width: 20px; left: 17px; top: 50%; transform: translateY(-50%); fill: none; stroke: #72777f; stroke-width: 1.7; }
.catalog-search input { width: 100%; height: 52px; padding: 0 18px 0 48px; border: 1px solid var(--line); border-radius: 2px; outline: none; background: rgba(255,255,255,.65); }
.catalog-search input:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(255,91,34,.1); }
.catalog-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.product-card { min-height: 480px; display: flex; flex-direction: column; background: var(--paper); overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; }
.product-card:hover { position: relative; z-index: 2; transform: translateY(-6px); box-shadow: var(--shadow); }
.product-art { height: 245px; position: relative; overflow: hidden; background: linear-gradient(145deg, #e8e7e2, #c9c9c5); }
.product-art::after { content: ""; position: absolute; inset: 0; opacity: .25; background-image: linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px); background-size: 26px 26px; }
.product-art i { position: absolute; z-index: 1; display: block; background: linear-gradient(145deg, #888d91, #b4b7b8 45%, #6a6f74); box-shadow: 0 24px 30px rgba(32,35,40,.22), inset 0 2px rgba(255,255,255,.25); }
.art-slabs i { width: 210px; height: 40px; left: 50%; clip-path: polygon(7% 0,100% 20%,93% 100%,0 80%); transform: translateX(-50%) rotate(-8deg); }
.art-slabs i:nth-child(1){top:70px}.art-slabs i:nth-child(2){top:105px;left:53%}.art-slabs i:nth-child(3){top:140px;left:56%}
.art-rings i { width: 150px; height: 150px; left: 50%; border: 30px solid #777c80; border-radius: 50%; background: #bfc1bf; transform: translateX(-50%) rotateX(65deg); }
.art-rings i:nth-child(1){top:35px}.art-rings i:nth-child(2){top:95px;left:56%}
.art-piles i { width: 42px; height: 220px; top: 15px; clip-path: polygon(10% 0,90% 0,100% 85%,50% 100%,0 85%); transform: rotate(18deg); }
.art-piles i:nth-child(1){left:30%}.art-piles i:nth-child(2){left:48%;top:8px}.art-piles i:nth-child(3){left:66%;top:18px}
.art-trays i { width: 190px; height: 75px; left: 50%; top: 60px; border: 21px solid #7e8387; border-top: 0; background: transparent; transform: translateX(-50%) skewY(-7deg); }
.art-trays i:nth-child(2){top:135px;left:57%}
.art-beams i { width: 230px; height: 50px; left: 50%; top: 78px; transform: translateX(-50%) rotate(-13deg); clip-path: polygon(5% 0,100% 12%,95% 100%,0 88%); }
.art-beams i:nth-child(2){top:135px;left:57%}
.art-blocks i { width: 135px; height: 74px; transform: skewY(-8deg); }
.art-blocks i:nth-child(1){left:18%;top:90px}.art-blocks i:nth-child(2){left:49%;top:70px}.art-blocks i:nth-child(3){left:39%;top:145px}
.art-curbs i { width: 200px; height: 36px; left: 50%; transform: translateX(-50%) rotate(-16deg); }
.art-curbs i:nth-child(1){top:78px}.art-curbs i:nth-child(2){top:118px;left:56%}.art-curbs i:nth-child(3){top:158px;left:62%}
.product-content { flex: 1; display: flex; flex-direction: column; padding: 25px; }
.product-content > span { color: var(--orange); font-family: "Arial Black", "Segoe UI", Arial, sans-serif; font-size: 12px; }
.product-content h3 { margin: 11px 0 8px; font-family: "Arial Black", "Segoe UI", Arial, sans-serif; font-size: 23px; font-weight: 400; text-transform: uppercase; }
.product-content p { color: var(--muted); font-size: 13px; }
.product-content button { margin-top: auto; align-self: flex-start; padding: 0; border: 0; color: var(--ink); background: transparent; font-size: 12px; font-weight: 800; text-transform: uppercase; }
.product-content button:hover { color: var(--orange); }
.product-card-accent { position: relative; color: #fff; background: var(--orange); }
.product-card-accent .product-content { position: relative; z-index: 2; padding-top: 55px; }
.product-card-accent .product-content > span, .product-card-accent .product-content button { color: #fff; }
.product-card-accent .product-content p { color: rgba(255,255,255,.75); }
.blueprint-lines { position: absolute; inset: 0; opacity: .22; background-image: linear-gradient(rgba(255,255,255,.55) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.55) 1px, transparent 1px); background-size: 27px 27px; }
.empty-state { display: none; padding: 40px; text-align: center; background: #fff; color: var(--muted); border: 1px solid var(--line); }

.custom-section { position: relative; overflow: hidden; }
.custom-section::before { content: ""; position: absolute; left: 0; bottom: 0; width: 35%; height: 60%; background: var(--orange); clip-path: polygon(0 35%, 100% 100%, 0 100%); opacity: .9; }
.custom-grid { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 80px; }
.custom-visual { position: relative; }
.drawing-paper { padding: 22px; background: #e8e5dc; box-shadow: 0 45px 70px rgba(0,0,0,.3); transform: rotate(-2deg); }
.drawing-title { color: #59606a; font: 10px monospace; letter-spacing: .08em; }
.drawing-paper svg { margin-top: 10px; }
.drawing-paper .grid { stroke: #9bb4c2; stroke-width: .6; opacity: .32; }
.drawing-paper .drawing { fill: none; stroke: #355466; stroke-width: 2; }
.drawing-paper .labels { fill: #355466; font: 12px monospace; }
.custom-copy > p { color: rgba(255,255,255,.62); font-size: 16px; }
.check-list { list-style: none; padding: 0; margin: 28px 0 35px; }
.check-list li { position: relative; padding: 13px 0 13px 32px; border-bottom: 1px solid rgba(255,255,255,.11); color: rgba(255,255,255,.8); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--orange); font-weight: 800; }

.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.advantage-card { min-height: 280px; padding: 32px; border-right: 1px solid var(--line); background: rgba(255,255,255,.42); }
.advantage-card:last-child { border-right: 0; }
.advantage-card > span { color: var(--orange); font: 800 12px "Segoe UI", Arial, sans-serif; }
.advantage-card h3 { margin: 62px 0 14px; font-size: 18px; line-height: 1.3; text-transform: uppercase; }
.advantage-card p { margin: 0; color: var(--muted); font-size: 13px; }

.process-section { padding-top: 0; }
.process-wrap { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; padding: 65px; color: #fff; background: #24272c; }
.process-copy h2 { margin: 15px 0 20px; font-size: clamp(32px, 3.5vw, 50px); text-transform: uppercase; }
.process-copy p { color: rgba(255,255,255,.54); }
.process-steps { display: grid; gap: 1px; background: rgba(255,255,255,.1); }
.process-steps article { display: grid; grid-template-columns: 64px 1fr; gap: 20px; align-items: start; padding: 25px; background: #24272c; }
.process-steps b { color: var(--orange); font-family: "Arial Black", "Segoe UI", Arial, sans-serif; font-size: 16px; font-weight: 400; }
.process-steps h3 { margin-bottom: 5px; font-size: 15px; text-transform: uppercase; }
.process-steps p { margin: 0; color: rgba(255,255,255,.5); font-size: 13px; }

.delivery-section { position: relative; min-height: 720px; overflow: hidden; color: #fff; background: #1a1d21; }
.delivery-map { position: absolute; left: 0; inset-block: 0; width: 58%; opacity: .7; background: linear-gradient(90deg, #0f1114, transparent); }
.delivery-map svg { width: 100%; height: 100%; }
.delivery-map path { fill: rgba(255,255,255,.05); stroke: rgba(255,255,255,.18); stroke-width: 2; }
.delivery-map circle { fill: var(--orange); }
.delivery-map .pulse { fill: none; stroke: var(--orange); stroke-width: 2; transform-origin: 373px 350px; animation: pulse 2s infinite; }
@keyframes pulse { 0% { transform: scale(.4); opacity: 1; } 100% { transform: scale(2); opacity: 0; } }
.delivery-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; min-height: 500px; }
.delivery-copy { position: relative; z-index: 2; padding-left: 50px; }
.delivery-copy > p { color: rgba(255,255,255,.6); }
.delivery-points { margin: 30px 0 35px; }
.delivery-points div { display: grid; grid-template-columns: 50px 1fr; gap: 15px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.delivery-points strong { color: var(--orange); font: 800 13px "Segoe UI", Arial, sans-serif; }
.delivery-points span { color: rgba(255,255,255,.75); }

.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: start; gap: 80px; }
.about-copy .lead { color: var(--ink); font-size: 20px; font-weight: 600; }
.about-copy p:not(.lead) { color: var(--muted); }
.text-link { display: inline-block; margin-top: 18px; color: var(--orange); font-weight: 800; font-size: 13px; text-transform: uppercase; }
.about-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; padding: 1px; background: var(--line); }
.about-stat { min-height: 210px; display: flex; flex-direction: column; justify-content: space-between; padding: 26px; background: #fff; }
.about-stat strong { font: 900 37px "Segoe UI", Arial, sans-serif; color: var(--orange); }
.about-stat span { color: var(--muted); font-size: 13px; }

.faq-section { background: #e9e7e1; }
.faq-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 85px; }
.faq-heading p { color: var(--muted); }
.accordion details { border-top: 1px solid rgba(23,25,29,.2); }
.accordion details:last-child { border-bottom: 1px solid rgba(23,25,29,.2); }
.accordion summary { list-style: none; display: flex; justify-content: space-between; gap: 20px; padding: 24px 0; font-size: 16px; font-weight: 700; cursor: pointer; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary span { color: var(--orange); font-size: 25px; font-weight: 400; transition: transform .2s ease; }
.accordion details[open] summary span { transform: rotate(45deg); }
.accordion details p { max-width: 750px; padding: 0 45px 22px 0; color: var(--muted); font-size: 14px; }

.request-section { color: #fff; background: var(--orange); }
.request-wrap { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; align-items: start; }
.request-copy .eyebrow { color: rgba(255,255,255,.7); }
.request-copy .eyebrow span { background: #fff; }
.request-copy p { color: rgba(255,255,255,.78); }
.request-contact { display: grid; margin-top: 45px; }
.request-contact span { color: rgba(255,255,255,.62); font-size: 12px; }
.request-contact a { font: 900 25px "Segoe UI", Arial, sans-serif; }
.request-form { padding: 36px; color: var(--ink); background: #fff; box-shadow: 0 30px 60px rgba(110,28,0,.2); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.request-form label, .modal-dialog label { display: grid; gap: 8px; margin-bottom: 17px; }
.request-form label > span, .modal-dialog label > span { font-size: 12px; font-weight: 700; }
.request-form input, .request-form textarea, .modal-dialog input { width: 100%; border: 1px solid rgba(23,25,29,.15); border-radius: 2px; outline: none; background: #f8f7f4; }
.request-form input, .modal-dialog input { height: 50px; padding: 0 15px; }
.request-form textarea { resize: vertical; padding: 14px 15px; }
.request-form input:focus, .request-form textarea:focus, .modal-dialog input:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(255,91,34,.1); }
.file-label input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-label { padding: 14px 17px; border: 1px dashed rgba(23,25,29,.25); cursor: pointer; }
.file-label .file-button { margin: 0; color: var(--orange); }
.file-label small { color: var(--muted); }
.agreement { grid-template-columns: 18px 1fr !important; align-items: start; gap: 10px !important; }
.agreement input { width: 16px !important; height: 16px !important; margin-top: 2px; accent-color: var(--orange); }
.agreement span { color: var(--muted); font-size: 11px !important; font-weight: 400 !important; }
.form-status { min-height: 22px; margin: 10px 0 0; color: #20813a; font-size: 12px; text-align: center; }

.contacts-section { padding: 110px 0; color: #fff; background: #16181c; }
.contacts-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; }
.contact-big { display: block; margin: 32px 0 8px; font: 900 clamp(30px, 4vw, 58px) "Segoe UI", Arial, sans-serif; transition: color .2s ease; }
.contact-big:hover, .contact-mail:hover { color: var(--orange); }
.contact-mail { color: rgba(255,255,255,.63); }
.contacts-address { padding: 35px; border-left: 1px solid rgba(255,255,255,.13); }
.contacts-address h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .1em; }
.contacts-address p { color: rgba(255,255,255,.62); }
.contacts-address .btn { margin-top: 20px; }
.site-footer { color: #fff; background: #101216; border-top: 1px solid rgba(255,255,255,.08); }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 35px; padding-block: 45px; }
.footer-top nav { display: flex; flex-wrap: wrap; gap: 25px; }
.footer-top nav a { color: rgba(255,255,255,.55); font-size: 12px; }
.to-top { width: 46px; height: 46px; color: #fff; background: transparent; border: 1px solid rgba(255,255,255,.2); font-size: 20px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-block: 20px; color: rgba(255,255,255,.35); border-top: 1px solid rgba(255,255,255,.08); font-size: 11px; }

.mobile-actions { display: none; }
.modal { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 20px; visibility: hidden; opacity: 0; transition: .2s ease; }
.modal.open { visibility: visible; opacity: 1; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(7,9,12,.76); backdrop-filter: blur(6px); }
.modal-dialog { position: relative; z-index: 2; width: min(510px, 100%); max-height: calc(100vh - 40px); overflow-y: auto; padding: 38px; background: #fff; box-shadow: var(--shadow); transform: translateY(20px); transition: transform .25s ease; }
.modal.open .modal-dialog { transform: translateY(0); }
.modal-close { position: absolute; top: 15px; right: 18px; width: 35px; height: 35px; border: 0; background: transparent; font-size: 28px; }
.modal-dialog h2 { margin: 15px 0 10px; font-size: 33px; text-transform: uppercase; }
.modal-dialog > p { color: var(--muted); font-size: 13px; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1120px) {
  .main-nav { gap: 17px; }
  .header-phone span { display: none; }
  .catalog-grid { grid-template-columns: repeat(3, 1fr); }
  .advantage-grid { grid-template-columns: 1fr 1fr; }
  .advantage-card:nth-child(2) { border-right: 0; }
  .advantage-card:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 900px) {
  .container { width: min(100% - 32px, var(--container)); }
  .section { padding: 82px 0; }
  .menu-toggle { display: block; margin-left: auto; }
  .header-phone { display: none; }
  .main-nav { position: fixed; inset: 72px 0 auto; display: grid; gap: 0; padding: 12px 16px 25px; background: rgba(23,25,29,.98); transform: translateY(-130%); transition: transform .25s ease; }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { padding: 17px 10px; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 15px; }
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; min-height: auto; padding-top: 100px; }
  .hero-visual { height: 450px; }
  .hero-trust { margin-top: 50px; }
  .catalog-grid { grid-template-columns: 1fr 1fr; }
  .custom-grid, .about-grid, .faq-grid, .request-wrap, .contacts-grid { grid-template-columns: 1fr; gap: 50px; }
  .custom-grid { grid-template-columns: 1fr; }
  .custom-copy { order: -1; }
  .process-wrap { grid-template-columns: 1fr; gap: 40px; padding: 45px; }
  .delivery-map { width: 100%; opacity: .25; }
  .delivery-grid { grid-template-columns: 1fr; }
  .delivery-grid > div:first-child { display: none; }
  .delivery-copy { padding-left: 0; }
  .contacts-address { padding-left: 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.13); }
}

@media (max-width: 620px) {
  body { padding-bottom: 62px; }
  .container { width: min(100% - 24px, var(--container)); }
  .site-header { height: 68px; background: rgba(23,25,29,.92); }
  .brand-mark { width: 36px; height: 36px; }
  .brand-text strong { font-size: 14px; }
  .brand-text small { font-size: 8px; }
  h1 { font-size: 40px; }
  .hero-grid { padding-top: 78px; gap: 20px; }
  .hero-copy > p { font-size: 15px; }
  .hero-actions .btn { width: 100%; }
  .hero-trust { display: grid; grid-template-columns: repeat(3, 1fr); }
  .hero-trust div { min-width: 0; padding: 0 10px; }
  .hero-trust strong { font-size: 17px; }
  .hero-trust span { font-size: 8px; }
  .hero-visual { height: 330px; }
  .concrete-stack { width: 310px; }
  .concrete-stack span { height: 64px; }
  .ring-a { width: 150px; height: 150px; border-width: 28px; }
  .ring-b { width: 110px; height: 110px; border-width: 22px; }
  .orange-beam { width: 80px; height: 310px; }
  .hero-badge { width: 190px; right: 0; bottom: 0; padding: 14px; }
  .hero-marquee { height: 58px; font-size: 21px; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 18px; }
  .section-heading h2, .custom-copy h2, .delivery-copy h2, .about-copy h2, .faq-heading h2, .request-copy h2, .contacts-main h2 { font-size: 32px; }
  .catalog-toolbar { align-items: stretch; flex-direction: column; }
  .catalog-search { max-width: none; }
  .catalog-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 430px; }
  .advantage-grid { grid-template-columns: 1fr; }
  .advantage-card { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--line); }
  .advantage-card h3 { margin-top: 35px; }
  .process-wrap { margin-inline: -12px; padding: 35px 22px; }
  .process-steps article { grid-template-columns: 45px 1fr; padding: 20px 14px; }
  .about-panel { grid-template-columns: 1fr; }
  .about-stat { min-height: 150px; }
  .request-form { padding: 24px 18px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-big { font-size: 29px; }
  .footer-top { align-items: flex-start; flex-direction: column; }
  .footer-top nav { display: grid; grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 7px; }
  .mobile-actions { position: fixed; z-index: 60; left: 0; right: 0; bottom: 0; height: 62px; display: grid; grid-template-columns: .9fr 1.1fr; box-shadow: 0 -8px 30px rgba(0,0,0,.18); }
  .mobile-actions a, .mobile-actions button { display: grid; place-items: center; border: 0; font-size: 12px; font-weight: 800; text-transform: uppercase; }
  .mobile-actions a { color: #fff; background: #272a30; }
  .mobile-actions button { color: #fff; background: var(--orange); }
  .modal-dialog { padding: 32px 20px 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; }
}