@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-Variable.ttf') format('truetype-variations');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --navy: #0d2139;
  --blue: #1260b8;
  --blue-dark: #0d4f9c;
  --ink: #13243a;
  --muted: #5d6e80;
  --line: #d7e0e9;
  --ice: #f1f5f9;
  --white: #fff;
  --container: 1360px;
  --shadow: 0 22px 60px rgb(13 33 57 / 12%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--white); font-family: 'Montserrat', Arial, Helvetica, sans-serif; line-height: 1.55; }
button, input, select, textarea { font: inherit; }
a { color: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.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; left: 16px; top: -80px; z-index: 100; padding: 12px 18px; background: var(--navy); color: white; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 50; background: white; border-bottom: 1px solid rgb(13 33 57 / 8%); box-shadow: 0 6px 24px rgb(13 33 57 / 5%); }
.site-header.header-liquid { background: linear-gradient(135deg, rgb(255 255 255 / 78%), rgb(232 241 249 / 66%)); border-bottom-color: rgb(255 255 255 / 72%); box-shadow: 0 8px 30px rgb(13 33 57 / 10%), inset 0 -1px 0 rgb(13 33 57 / 7%); -webkit-backdrop-filter: blur(22px) saturate(180%); backdrop-filter: blur(22px) saturate(180%); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 34px; }
.brand { flex: 0 0 auto; margin-right: auto; text-decoration: none; }
.brand img { width: auto; height: 51px; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a, .phone { font-size: 13px; font-weight: 700; text-decoration: none; }
.site-nav a:hover, .site-nav a:focus-visible, .phone:hover { color: var(--blue); }
.header-contact { display: flex; align-items: center; gap: 24px; }
.header-icon { display: none; place-items: center; width: 42px; height: 42px; padding: 0; border: 1px solid rgb(13 33 57 / 10%); border-radius: 50%; background: rgb(255 255 255 / 44%); box-shadow: inset 0 1px 0 rgb(255 255 255 / 70%); }
.header-icon img, .header-message-action img, .header-phone-button img { filter: invert(29%) sepia(71%) saturate(1429%) hue-rotate(182deg) brightness(89%) contrast(92%); }
.header-message-action img { display: none; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; padding: 12px 25px; border: 1px solid var(--blue); border-radius: 3px; background: var(--blue); color: white; font-size: 13px; font-weight: 800; letter-spacing: .025em; text-decoration: none; text-transform: uppercase; cursor: pointer; transition: background .2s ease, color .2s ease, transform .2s ease; }
.button:hover { background: var(--blue-dark); transform: translateY(-1px); }
.button:focus-visible, button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid rgb(18 96 184 / 30%); outline-offset: 3px; }
.button-small { min-height: 42px; padding-inline: 22px; }
.button-outline { color: var(--blue); background: transparent; }
.button-outline:hover { color: white; }
.button-icon { flex: 0 0 auto; width: 20px; height: 20px; filter: invert(1); }
.button-outline .button-icon { filter: invert(29%) sepia(71%) saturate(1429%) hue-rotate(182deg) brightness(89%) contrast(92%); }
.button-outline:hover .button-icon { filter: invert(1); }
.menu-toggle { display: none; border: 0; background: transparent; padding: 10px; }
.menu-toggle > span:not(.sr-only) { display: block; width: 25px; height: 2px; margin: 5px 0; background: var(--navy); }

.hero { min-height: 592px; background: #edf3f8 url('../images/sintek-roll-hero.png') center/cover no-repeat; overflow: hidden; }
.hero-inner { min-height: 592px; display: flex; align-items: center; }
.hero-copy { width: min(600px, 47%); padding-block: 70px 110px; }
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3, p { text-wrap: pretty; }
h1 { max-width: 660px; margin: 0; color: var(--navy); font-size: clamp(42px, 4.7vw, 70px); line-height: 1.02; letter-spacing: .018em; text-transform: uppercase; }
.hero-lead { max-width: 500px; margin: 28px 0 0; color: #3b4c5e; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }

.density-panel { position: relative; z-index: 3; margin-top: -68px; }
.density-card { padding: 30px 34px 24px; background: rgb(255 255 255 / 97%); border: 1px solid rgb(13 33 57 / 10%); box-shadow: var(--shadow); }
.density-heading { display: grid; grid-template-columns: 1fr minmax(300px, 480px); align-items: end; gap: 40px; padding-bottom: 22px; }
.density-heading h2, .product-section h2, .contact-section h2 { margin: 0; color: var(--navy); font-size: clamp(30px, 3vw, 48px); line-height: 1.05; letter-spacing: -.025em; text-transform: uppercase; }
.density-heading > p { margin: 0; color: var(--muted); }
.density-options { display: grid; grid-template-columns: repeat(8, minmax(90px, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow-x: auto; }
.density-option { min-width: 100px; padding: 17px 12px 15px; border: 0; border-right: 1px solid var(--line); background: transparent; color: #8894a1; cursor: pointer; }
.density-option:last-child { border-right: 0; }
.density-option strong, .density-option span { display: block; }
.density-option strong { font-size: 27px; line-height: 1.1; }
.density-option span { font-size: 12px; }
.density-option:hover { background: var(--ice); color: var(--blue); }
.density-option.is-active { box-shadow: inset 0 -3px 0 var(--blue); color: var(--blue); background: linear-gradient(0deg, rgb(18 96 184 / 24%) 0%, rgb(18 96 184 / 10%) 42%, white 100%); }
.density-result { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; align-items: center; padding: 22px 0; }
.density-result div { padding-right: 22px; border-right: 1px solid var(--line); }
.density-result div:last-child { border-right: 0; }
.density-result span, .density-result strong { display: block; }
.density-result span { color: var(--muted); font-size: 12px; text-transform: uppercase; }
.density-result strong { color: var(--navy); font-size: 19px; }
.purchase-panel { padding-top: 22px; border-top: 1px solid var(--line); }
.purchase-form { display: grid; grid-template-columns: 1.15fr 1fr .9fr 1.1fr; gap: 14px; align-items: end; }
.unit-switch { min-width: 0; margin: 0; padding: 0; border: 0; }
.unit-switch legend, .quantity-field > label { margin-bottom: 7px; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.unit-switch > div { display: grid; grid-template-columns: 1fr 1fr; min-height: 50px; padding: 3px; background: var(--ice); }
.unit-option { border: 0; background: transparent; color: var(--muted); font-weight: 700; cursor: pointer; }
.unit-option.is-active { background: white; color: var(--blue); box-shadow: 0 2px 9px rgb(13 33 57 / 10%); }
.quantity-field { min-width: 0; }
.quantity-field > label { display: block; }
.quantity-stepper { display: grid; grid-template-columns: 48px minmax(58px, 1fr) 48px; min-height: 50px; border: 1px solid var(--line); }
.quantity-stepper button { display: grid; place-items: center; padding: 0; border: 0; background: var(--ice); cursor: pointer; }
.quantity-stepper button:hover { background: #dfeaf3; }
.quantity-stepper button img { width: 19px; height: 19px; filter: invert(29%) sepia(71%) saturate(1429%) hue-rotate(182deg) brightness(89%) contrast(92%); }
.quantity-stepper input { min-width: 0; width: 100%; padding: 8px; border: 0; border-right: 1px solid var(--line); border-left: 1px solid var(--line); color: var(--navy); background: white; font-weight: 750; text-align: center; appearance: textfield; }
.quantity-stepper input::-webkit-inner-spin-button, .quantity-stepper input::-webkit-outer-spin-button { margin: 0; appearance: none; }
.purchase-total { display: grid; grid-template-rows: auto 50px; min-width: 0; }
.purchase-total span { margin-bottom: 7px; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.purchase-total strong { display: flex; align-items: center; min-height: 50px; padding: 8px 18px; border: 1px solid var(--line); color: var(--navy); background: white; font-size: 20px; }
.purchase-submit { min-height: 50px; }

body.modal-open { overflow: hidden; }
.order-modal[hidden] { display: none; }
.order-modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; }
.modal-backdrop { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: rgb(7 23 42 / 76%); cursor: default; }
.modal-dialog { position: relative; z-index: 1; width: min(100%, 680px); max-height: calc(100vh - 48px); overflow-y: auto; padding: 38px; background: white; box-shadow: 0 30px 90px rgb(0 0 0 / 28%); }
.modal-close { position: absolute; right: 18px; top: 18px; display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--line); background: white; cursor: pointer; }
.modal-close img { filter: invert(13%) sepia(26%) saturate(1587%) hue-rotate(174deg) brightness(89%) contrast(94%); }
.modal-dialog h2 { margin: 0 48px 24px 0; color: var(--navy); font-size: clamp(27px, 4vw, 40px); line-height: 1.06; text-transform: uppercase; }
.order-summary { display: grid; grid-template-columns: 1fr 1fr; margin: 0 0 28px; border-top: 1px solid var(--line); }
.order-summary > div { display: flex; justify-content: space-between; gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.order-summary > div:nth-child(odd):not(.summary-total) { padding-right: 18px; }
.order-summary > div:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--line); }
.order-summary dt { color: var(--muted); font-size: 12px; }
.order-summary dd { margin: 0; color: var(--navy); font-size: 13px; font-weight: 750; text-align: right; }
.order-summary .summary-total { grid-column: 1 / -1; padding: 16px 0; }
.order-summary .summary-total dd { color: var(--blue); font-size: 19px; }
.order-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.order-form label:not(.order-consent) { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; }
.order-form input:not([type='checkbox']), .order-form textarea { width: 100%; margin-top: 6px; padding: 12px 13px; border: 1px solid var(--line); color: var(--navy); background: white; text-transform: none; }
.order-comment, .order-consent, .order-form .button, .order-status { grid-column: 1 / -1; }
.order-form textarea { resize: vertical; }
.order-consent { display: flex; gap: 10px; align-items: flex-start; color: var(--muted); font-size: 12px; }
.order-consent input { margin-top: 3px; }
.order-status { min-height: 20px; margin: 0; color: var(--blue); font-size: 13px; }

.product-section { padding: 86px 0 32px; }
.product-heading { margin-bottom: 36px; }
.product-carousel-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 16px; }
.product-carousel-heading > p { margin: 0; color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.product-carousel { overflow-x: auto; scroll-behavior: smooth; scrollbar-width: thin; scrollbar-color: #a8b9c9 transparent; }
.product-carousel-track { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 28px) / 3); gap: 14px; padding-bottom: 16px; }
.product-photo-placeholder { position: relative; display: flex; flex-direction: column; justify-content: flex-end; min-height: 330px; padding: 24px; overflow: hidden; border: 1px solid #c8d4df; background: repeating-linear-gradient(135deg, #e6edf3 0, #e6edf3 14px, #dde6ee 14px, #dde6ee 28px); color: var(--navy); }
.product-photo-placeholder::before { content: ''; position: absolute; inset: 16px; border: 1px solid rgb(13 33 57 / 12%); }
.product-photo-placeholder span, .product-photo-placeholder small { position: relative; z-index: 1; }
.product-photo-placeholder span { font-weight: 750; }
.product-photo-placeholder small { margin-top: 4px; color: var(--muted); }
.text-link { color: var(--blue); font-weight: 800; text-decoration: none; text-transform: uppercase; font-size: 13px; }
.text-link span { margin-left: 12px; }

.section-heading { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 10%; margin-bottom: 42px; }
.section-heading h2, .video-placeholder h2, .steps-section h2 { max-width: 780px; margin: 0; color: var(--navy); font-size: clamp(30px, 3vw, 48px); line-height: 1.06; letter-spacing: -.025em; text-transform: uppercase; }
.section-heading > p { margin: 0; color: var(--muted); }
.benefits-section { padding: 0 0 90px; }
.benefits-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.benefits-grid article { min-height: 230px; padding: 32px 28px 28px 0; }
.benefits-grid article + article { padding-left: 28px; border-left: 1px solid var(--line); }
.benefits-grid img, .logistics-group img, .steps-list img { filter: invert(29%) sepia(71%) saturate(1429%) hue-rotate(182deg) brightness(89%) contrast(92%); }
.benefits-grid h3 { margin: 28px 0 10px; color: var(--navy); font-size: 19px; }
.benefits-grid p { margin: 0; color: var(--muted); font-size: 14px; }

.production-section { padding: 88px 0; background: var(--ice); }
.production-gallery { display: grid; grid-template-columns: 1.45fr 1fr 1fr; grid-template-rows: 220px 220px; gap: 14px; }
.gallery-placeholder { position: relative; display: flex; flex-direction: column; justify-content: flex-end; min-height: 220px; padding: 22px; overflow: hidden; border: 1px solid #c8d4df; background: repeating-linear-gradient(135deg, #e6edf3 0, #e6edf3 12px, #dde6ee 12px, #dde6ee 24px); color: var(--navy); }
.gallery-placeholder::before { content: ''; position: absolute; inset: 14px; border: 1px solid rgb(13 33 57 / 12%); }
.gallery-placeholder span, .gallery-placeholder small { position: relative; z-index: 1; }
.gallery-placeholder span { font-weight: 750; }
.gallery-placeholder small { color: var(--muted); }
.gallery-main { grid-row: 1 / span 2; }
.production-gallery .gallery-placeholder:last-child { grid-column: 2 / span 2; }

.video-section { padding: 32px 0 76px; }
.video-placeholder { position: relative; min-height: 510px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 40px; padding: clamp(38px, 6vw, 82px); overflow: hidden; background: var(--navy); color: white; }
.video-placeholder::after { content: '16:9'; position: absolute; right: 24px; bottom: 18px; color: rgb(255 255 255 / 30%); font-size: 12px; letter-spacing: .12em; }
.video-placeholder h2 { max-width: 650px; color: white; }
.video-placeholder > div > p:last-child { max-width: 560px; color: #b8c5d3; }
.video-button { display: grid; place-items: center; width: 112px; height: 112px; border: 1px solid rgb(255 255 255 / 32%); border-radius: 50%; background: rgb(255 255 255 / 7%); color: white; cursor: pointer; transition: background .2s ease, transform .2s ease; }
.video-button:hover { background: var(--blue); transform: scale(1.03); }
.video-button img { width: 44px; height: 44px; filter: invert(1); }
.video-status { position: absolute; left: clamp(38px, 6vw, 82px); bottom: 24px; margin: 0; color: #8ec2ff; font-size: 13px; }

.logistics-section { padding: 80px 0 62px; background: white; }
.logistics-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.logistics-group { padding: 0 36px 0 0; background: transparent; }
.logistics-group + .logistics-group { padding-right: 0; padding-left: 36px; border-left: 1px solid var(--line); }
.logistics-group h3 { margin: 0 0 20px; color: var(--navy); font-size: 22px; }
.logistics-group ul { margin: 0; padding: 0; list-style: none; }
.logistics-group li { display: grid; grid-template-columns: 36px 1fr; gap: 16px; align-items: center; padding: 18px 0; border-top: 1px solid var(--line); }
.logistics-group strong, .logistics-group small { display: block; }
.logistics-group strong { color: var(--navy); font-size: 14px; }
.logistics-group small { margin-top: 3px; color: var(--muted); }

.steps-section { padding: 64px 0 84px; border-top: 1px solid var(--line); background: white; }
.steps-section h2 { margin-bottom: 46px; }
.steps-list { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.steps-list li { position: relative; min-height: 220px; padding: 34px 28px 24px 0; overflow: hidden; }
.steps-list li + li { padding-left: 28px; border-left: 1px solid var(--line); }
.step-number { position: absolute; top: 12px; right: 18px; z-index: 0; color: rgb(18 96 184 / 8%); font-size: clamp(72px, 7vw, 112px); font-weight: 850; line-height: 1; letter-spacing: -.08em; pointer-events: none; user-select: none; }
.steps-list img, .steps-list h3, .steps-list p { position: relative; z-index: 1; }
.steps-list h3 { margin: 22px 0 9px; color: var(--navy); font-size: 18px; }
.steps-list p { margin: 0; color: var(--muted); font-size: 13px; }
.steps-action { display: flex; justify-content: center; margin-top: 38px; }
.steps-action .button img { filter: invert(1); }

.partners-section { padding: 88px 0; background: var(--ice); }
.partners-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 34px; }
.partners-heading h2, .seo-section h2 { margin: 0; color: var(--navy); font-size: clamp(30px, 3vw, 48px); line-height: 1.06; text-transform: uppercase; }
.carousel-controls { display: flex; gap: 8px; }
.carousel-controls button { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid var(--line); background: white; cursor: pointer; }
.carousel-controls button:hover { border-color: var(--blue); }
.carousel-controls img { filter: invert(29%) sepia(71%) saturate(1429%) hue-rotate(182deg) brightness(89%) contrast(92%); }
.partners-carousel { overflow-x: auto; scroll-behavior: smooth; scrollbar-width: thin; scrollbar-color: #a8b9c9 transparent; }
.partners-track { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 42px) / 4); gap: 14px; padding-bottom: 16px; }
.partner-placeholder { min-height: 150px; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 20px; border: 1px solid #c8d4df; background: white; color: #788899; text-align: center; }
.partner-placeholder span { font-size: 13px; font-weight: 700; text-transform: uppercase; }
.partner-placeholder small { margin-top: 10px; color: #a1aebb; }

.contact-section { padding: 86px 0; background: var(--navy); color: white; }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 9%; }
.eyebrow-light { color: #74aff2; }
.contact-section h2 { color: white; }
.contact-intro { max-width: 520px; color: #b8c5d3; }
.contact-channels { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.contact-channels button, .contact-channels a { display: grid; place-items: center; width: 48px; height: 48px; padding: 0; border: 1px solid rgb(255 255 255 / 28%); border-radius: 50%; background: transparent; cursor: pointer; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.contact-channels button:hover, .contact-channels a:hover { border-color: #74aff2; background: rgb(116 175 242 / 14%); transform: translateY(-2px); }
.contact-channels img { filter: invert(1); }
.contact-channel-status { min-height: 22px; margin: 12px 0 0; color: #b8dbff; font-size: 12px; }
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { color: #c8d3df; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; margin-top: 7px; padding: 13px 14px; border: 1px solid #52667d; border-radius: 2px; background: #142b45; color: white; text-transform: none; }
.contact-form .form-message, .contact-form .button, .form-status { grid-column: 1 / -1; }
.contact-form textarea { resize: vertical; }
.button-light { color: var(--navy); background: white; border-color: white; }
.button-light:hover { color: white; background: var(--blue); border-color: var(--blue); }
.form-status { min-height: 24px; margin: 0; color: #b8dbff; }

.seo-section { padding: 82px 0; border-bottom: 1px solid var(--line); background: white; }
.seo-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 9%; }
.seo-scroll { max-height: 230px; overflow-y: auto; padding: 0 28px 0 0; color: var(--muted); scrollbar-width: thin; scrollbar-color: #9eb1c3 #edf2f6; }
.seo-scroll p { margin: 0 0 18px; }
.seo-scroll p:last-child { margin-bottom: 0; }
.site-footer { padding: 28px 0; color: var(--muted); background: white; }
.footer-inner { display: flex; align-items: center; }
.footer-inner p { margin: 0; }
.back-to-top { position: fixed; right: 20px; bottom: 15px; z-index: 45; display: grid; place-items: center; width: 54px; height: 54px; border: 1px solid rgb(255 255 255 / 30%); border-radius: 50%; background: var(--navy); box-shadow: 0 12px 34px rgb(13 33 57 / 22%); opacity: 0; pointer-events: none; transform: translateY(14px); transition: opacity .2s ease, transform .2s ease, background .2s ease; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { background: var(--blue); }
.back-to-top img { filter: invert(1); }

@media (max-width: 1120px) {
  .site-nav { gap: 18px; }
  .site-nav a { font-size: 12px; }
  .phone { display: none; }
  .hero-copy { width: 56%; }
  .density-options { grid-template-columns: repeat(8, 112px); }
}

@media (max-width: 860px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .header-inner { min-height: 68px; }
  .menu-toggle { display: block; order: 1; margin-left: -10px; }
  .brand { order: 2; margin-right: 0; }
  .header-contact { order: 3; margin-left: auto; gap: 8px; }
  .header-phone-action { display: grid; }
  .header-contact .header-message-action { display: grid; place-items: center; width: 42px; min-height: 42px; padding: 0; border-radius: 50%; background: rgb(255 255 255 / 52%); border-color: rgb(13 33 57 / 10%); box-shadow: inset 0 1px 0 rgb(255 255 255 / 70%); }
  .header-message-action span { display: none; }
  .header-message-action img { display: block; }
  .site-nav { position: absolute; inset: 68px 0 auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 16px 18px; background: white; border-top: 1px solid var(--line); box-shadow: var(--shadow); }
  .site-header.header-liquid .site-nav { background: rgb(247 251 255 / 88%); border-top-color: rgb(255 255 255 / 72%); -webkit-backdrop-filter: blur(22px) saturate(170%); backdrop-filter: blur(22px) saturate(170%); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 14px 16px; font-size: 14px; }
  .hero { min-height: 680px; background-position: 60% center; }
  .hero-inner { min-height: 680px; align-items: flex-start; }
  .hero-copy { width: 68%; padding-top: 64px; }
  .density-heading, .contact-grid, .section-heading { grid-template-columns: 1fr; }
  .density-heading { gap: 16px; }
  .density-result { grid-template-columns: 1fr 1fr; }
  .density-result div:nth-child(2) { border-right: 0; }
  .density-result div:nth-child(4) { border-right: 0; }
  .purchase-form { grid-template-columns: 1fr 1fr; }
  .section-heading { gap: 18px; }
  .benefits-grid, .steps-list { grid-template-columns: 1fr 1fr; }
  .benefits-grid article:nth-child(3), .steps-list li:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .production-gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 300px 190px 190px; }
  .gallery-main { grid-column: 1 / -1; grid-row: 1; }
  .production-gallery .gallery-placeholder:last-child { grid-column: 1 / -1; }
  .video-placeholder { min-height: 440px; }
  .logistics-grid { grid-template-columns: 1fr; }
  .logistics-group + .logistics-group { margin-top: 32px; padding: 0; border-left: 0; }
  .partners-track { grid-auto-columns: calc((100% - 14px) / 2); }
  .product-carousel-track { grid-auto-columns: calc((100% - 14px) / 2); }
  .seo-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 600px) {
  .container { width: min(calc(100% - 24px), var(--container)); }
  .brand img { height: 43px; }
  .hero { min-height: 710px; background-image: linear-gradient(180deg, rgb(237 243 248 / 95%) 0%, rgb(237 243 248 / 84%) 52%, rgb(237 243 248 / 10%) 100%), url('../images/sintek-roll-hero.png'); background-position: 64% bottom; background-size: auto 100%, auto 52%; background-repeat: no-repeat; }
  .hero-inner { min-height: 710px; }
  .hero-copy { width: 100%; padding-top: 48px; }
  h1 { font-size: clamp(38px, 12vw, 56px); }
  .hero-lead { font-size: 16px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .density-panel { margin-top: -28px; }
  .density-card { padding: 24px 18px; }
  .density-result { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0; padding: 18px 0; }
  .density-result div { padding: 12px 8px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .density-result div:nth-child(-n+3) { grid-column: span 2; }
  .density-result div:nth-child(n+4) { grid-column: span 3; border-bottom: 0; }
  .density-result div:nth-child(2), .density-result div:nth-child(4) { border-right: 1px solid var(--line); }
  .density-result div:nth-child(3), .density-result div:nth-child(5) { border-right: 0; }
  .density-result div { display: flex; min-width: 0; min-height: 74px; flex-direction: column; justify-content: space-between; }
  .density-result span { min-height: 26px; overflow-wrap: anywhere; font-size: 9px; line-height: 1.25; }
  .density-result strong { margin-top: 6px; overflow-wrap: anywhere; font-size: clamp(13px, 4vw, 15px); line-height: 1.2; }
  .purchase-form { grid-template-columns: 1fr; }
  .purchase-submit { width: 100%; }
  .modal-dialog { padding: 30px 20px 24px; }
  .order-summary, .order-form { grid-template-columns: 1fr; }
  .order-summary > div:nth-child(odd):not(.summary-total), .order-summary > div:nth-child(even) { padding-right: 0; padding-left: 0; border-left: 0; }
  .order-summary .summary-total, .order-comment, .order-consent, .order-form .button, .order-status { grid-column: 1; }
  .benefits-grid, .steps-list { grid-template-columns: 1fr; }
  .benefits-grid article, .benefits-grid article + article, .benefits-grid article:nth-child(3), .steps-list li, .steps-list li + li, .steps-list li:nth-child(3) { padding: 26px 0; border-left: 0; border-top: 1px solid var(--line); }
  .steps-list li:first-child { border-top: 0; }
  .steps-list li { min-height: 190px; }
  .step-number { top: 18px; right: 8px; font-size: 92px; }
  .production-gallery { display: grid; grid-template-columns: 1fr; grid-template-rows: repeat(4, 210px); gap: 24px; }
  .gallery-main, .production-gallery .gallery-placeholder:last-child { grid-column: auto; grid-row: auto; }
  .video-placeholder { min-height: 520px; grid-template-columns: 1fr; align-content: center; }
  .video-button { width: 96px; height: 96px; }
  .video-button img { width: 38px; height: 38px; }
  .logistics-section { padding: 66px 0 48px; }
  .logistics-group { padding: 0; }
  .steps-section { padding: 52px 0 66px; }
  .partners-heading { align-items: flex-start; flex-direction: column; }
  .partners-track { grid-auto-columns: 82%; }
  .product-carousel-track { grid-auto-columns: 86%; }
  .product-photo-placeholder { min-height: 300px; }
  .steps-action .button { width: 100%; }
  .seo-scroll { max-height: 260px; }
  .contact-form { grid-template-columns: 1fr; }
  .contact-form label, .contact-form .form-message, .contact-form .button, .form-status { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}