:root {
  --bg: #1d1f1f;
  --page: #f8f9f6;
  --paper: #ffffff;
  --soft: #eef1eb;
  --ink: #111718;
  --muted: #65706f;
  --line: #dfe4dc;
  --brand: #00857d;
  --brand-dark: #006d68;
  --gold: #d69a2d;
  --shadow: 0 24px 70px rgba(0, 0, 0, .16);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  letter-spacing: 0;
}
button, input, select {
  font: inherit;
}
button {
  border: 0;
  border-radius: 4px;
  background: var(--brand);
  color: #fff;
  padding: 10px 16px;
  font-weight: 700;
  cursor: default;
}
button.secondary, button.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
button.ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, .55);
}
input, select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--soft);
  border-radius: 3px;
  padding: 11px 12px;
}
h1, h2, h3, h4, p { margin-top: 0; }
h1 { font-size: 42px; line-height: 1; color: #fff; margin-bottom: 16px; }
h2 { font-size: 30px; line-height: 1.08; margin-bottom: 18px; }
h3 { font-size: 20px; margin-bottom: 14px; }
h4 { font-size: 14px; margin-bottom: 8px; }
p { color: var(--muted); line-height: 1.45; }

.board {
  width: max-content;
  min-width: 100%;
  padding: 56px;
}
.board-header {
  margin-bottom: 44px;
}
.board-header p {
  color: #aeb7b4;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: .06em;
}
.legend {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.legend span {
  color: #dce2df;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
}

.desktop-grid {
  display: grid;
  grid-template-columns: repeat(2, 1440px);
  gap: 82px 48px;
  align-items: start;
}
.screen {
  position: relative;
  background: var(--page);
  border: 12px solid #111313;
  box-shadow: var(--shadow);
  overflow: visible;
}
.screen::before {
  content: attr(data-title);
  position: absolute;
  left: -12px;
  top: -42px;
  color: #c7cfcc;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0;
}
.desktop {
  width: 1440px;
  min-height: 1320px;
  padding: 0 46px 42px;
}
.desktop.home {
  min-height: 2780px;
}
.topline {
  height: 32px;
  margin: 0 -46px;
  padding: 8px 46px;
  background: #111313;
  color: #fff;
  font-size: 12px;
}
.topline span { margin-left: 18px; color: #cfd7d4; }
.topline b { float: right; font-size: 11px; }
.nav {
  height: 66px;
  display: flex;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.nav strong, .mobile-nav strong {
  margin-right: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav i, .mobile-nav i {
  width: 18px;
  height: 18px;
  display: inline-block;
  border-radius: 4px;
  background: var(--brand);
}
.nav button {
  padding: 9px 15px;
  font-size: 12px;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr .72fr 220px;
  gap: 32px;
  margin: 36px 0 34px;
  align-items: stretch;
}
.hero-photo,
.thumb,
.gallery-main,
.inline-photo,
.gallery-row span,
.sample-card {
  background-size: cover;
  background-position: center;
  border-radius: 6px;
}
.steps { background-image: linear-gradient(90deg, rgba(0,0,0,.42), rgba(0,0,0,.08)), url("assets/steps.jpg"); }
.facade { background-image: url("assets/facade.jpg"); }
.pallet { background-image: url("assets/pallet.jpg"); }
.slab { background-image: url("assets/slab_a.jpg"); }
.slab2 { background-image: url("assets/slab_b.jpg"); }
.hero-photo {
  min-height: 300px;
  padding: 42px;
  color: #fff;
}
.hero-photo h2 {
  color: #fff;
  max-width: 430px;
}
.hero-photo p {
  color: #edf3f0;
  max-width: 470px;
}
.quote-card,
.sample-card,
.buy-box,
.order-summary,
.step-card,
.payment-line {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.quote-card {
  padding: 40px;
}
.sample-card {
  min-height: 210px;
  align-self: center;
}
.section-title { margin: 18px 0; }
.cards {
  display: grid;
  gap: 28px;
}
.cards.four { grid-template-columns: repeat(4, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.cards.one { grid-template-columns: 1fr; }
.cards > div,
.product-grid > div {
  background: #fff;
  border: 1px solid #edf0eb;
  border-radius: 6px;
  padding: 14px;
}
.thumb {
  height: 126px;
  margin-bottom: 14px;
}
.cards p,
.product-grid p,
.price {
  color: var(--brand);
  font-weight: 700;
}
.dark-strip {
  margin: 38px 0;
  padding: 22px 30px;
  background: #111718;
  color: #fff;
  border-radius: 5px;
  display: flex;
  justify-content: space-between;
  gap: 22px;
  font-weight: 700;
}
.dark-strip.compact {
  display: block;
  font-size: 13px;
}
.split,
.about-hero,
.checkout-grid,
.calc-layout,
.product-layout {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 42px;
  margin: 40px 0;
}
.calc-mini {
  background: #111718;
  color: #fff;
  padding: 28px;
  border-radius: 8px;
  display: grid;
  gap: 10px;
}
.story {
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.home-intro {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 32px;
  align-items: start;
}
.mini-grid,
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.mini-grid span,
.process div {
  background: var(--soft);
  padding: 18px;
  border-radius: 6px;
  font-weight: 700;
}
.footer {
  margin-top: 48px;
  padding: 30px 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.home-section,
.workflow,
.gallery-band,
.b2b-section,
.faq-section,
.final-cta,
.two-column-info {
  margin-top: 46px;
}
.section-head {
  max-width: 720px;
  margin-bottom: 24px;
}
.section-head span,
.info-panel span,
.b2b-section span {
  display: block;
  margin-bottom: 8px;
  color: var(--brand);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: .08em;
  font-weight: 800;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.feature-grid > div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}
.feature-grid b {
  display: inline-block;
  margin-top: 8px;
  color: var(--brand);
  font-size: 12px;
}
.feature-photo {
  height: 150px;
  margin-bottom: 18px;
  border-radius: 6px;
  background-size: cover;
  background-position: center;
}
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.timeline > div {
  background: #111718;
  color: #fff;
  border-radius: 8px;
  padding: 24px;
  min-height: 210px;
}
.timeline b {
  color: var(--brand);
  font-size: 28px;
}
.timeline h4 {
  margin-top: 18px;
  color: #fff;
}
.timeline p {
  color: #d6dfdc;
}
.two-column-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.info-panel {
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.info-panel.dark {
  background: #111718;
  color: #fff;
  border-color: #111718;
}
.info-panel.dark h3 {
  color: #fff;
}
.info-panel.dark p,
.info-panel.dark li {
  color: #d7dfdc;
}
.info-panel ul {
  margin: 22px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.gallery-strip {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1fr 1.2fr;
  gap: 16px;
}
.gallery-strip div {
  height: 210px;
  border-radius: 8px;
  background-size: cover;
  background-position: center;
}
.b2b-section {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 34px;
  align-items: center;
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.data-table {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.data-table div {
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}
.data-table div:nth-child(2n) {
  border-right: 0;
}
.data-table div:nth-last-child(-n + 2) {
  border-bottom: 0;
}
.data-table span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}
.faq-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.faq-grid div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}
.final-cta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  padding: 34px;
  background: #111718;
  color: #fff;
  border-radius: 8px;
}
.final-cta h3 {
  color: #fff;
}
.final-cta p {
  color: #d7dfdc;
  margin-bottom: 0;
}
.final-cta .ghost {
  margin-left: 10px;
}

.shop h2 { margin: 36px 0 24px; }
.shop-layout {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 34px;
}
.filters {
  background: var(--soft);
  padding: 24px;
  border-radius: 8px;
  display: grid;
  gap: 12px;
  align-content: start;
}
.filters label {
  display: block;
  font-size: 13px;
}
.filters input {
  width: auto;
  margin-right: 7px;
}
.filters button { margin-top: 20px; }
.toolbar {
  display: flex;
  justify-content: space-between;
  background: var(--soft);
  padding: 16px 18px;
  border-radius: 6px;
  margin-bottom: 22px;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.product-layout {
  grid-template-columns: 1.15fr .85fr;
  align-items: start;
}
.gallery-main {
  height: 620px;
  border-radius: 8px;
}
.gallery-row {
  display: flex;
  gap: 14px;
  margin-top: 18px;
}
.gallery-row span {
  width: 112px;
  height: 82px;
  border: 1px solid var(--line);
}
.buy-box,
.order-summary {
  padding: 34px;
}
.buy-box label {
  display: block;
  margin: 18px 0 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.pill {
  background: var(--gold);
  border-radius: 999px;
  padding: 8px 14px;
}
.summary {
  margin: 24px 0;
  padding: 20px;
  background: #111718;
  color: #fff;
  border-radius: 6px;
  display: grid;
  gap: 8px;
}
.tabs {
  margin-top: 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 32px;
}
.tab-copy { margin-top: 20px; }

.calc-layout {
  grid-template-columns: 1fr 380px;
  align-items: start;
}
.steps-panel {
  display: grid;
  gap: 18px;
}
.step-card {
  padding: 24px;
}
.step-card.active {
  border-color: rgba(0, 133, 125, .45);
}
.inline-photo {
  width: 160px;
  height: 94px;
  margin: 15px 0;
}
.inputs,
.form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.step-card label {
  display: block;
  margin: 12px 0;
}
.step-card input[type="checkbox"] {
  width: auto;
}
.order-summary {
  display: grid;
  gap: 14px;
}
.order-summary small {
  color: var(--muted);
  line-height: 1.4;
}
.checkout-grid {
  grid-template-columns: 1fr 380px;
}
.form-grid {
  grid-template-columns: repeat(2, 1fr);
  margin-bottom: 28px;
}
.payment-line {
  padding: 22px;
}
.account-hero {
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: 34px;
  align-items: center;
  margin: 38px 0 28px;
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.account-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.account-stats div {
  background: var(--soft);
  border-radius: 6px;
  padding: 20px;
}
.account-stats b {
  display: block;
  color: var(--brand);
  font-size: 34px;
  line-height: 1;
  margin-bottom: 8px;
}
.account-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 28px;
}
.account-menu {
  background: var(--soft);
  border-radius: 8px;
  padding: 24px;
  display: grid;
  gap: 12px;
  align-content: start;
}
.account-menu span {
  padding: 12px;
  border-radius: 5px;
  color: var(--muted);
}
.account-menu .active {
  background: #fff;
  color: var(--ink);
  font-weight: 800;
}
.account-content {
  display: grid;
  gap: 22px;
}
.account-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.account-card.urgent {
  border-color: rgba(0, 133, 125, .35);
  box-shadow: 0 16px 42px rgba(0, 133, 125, .08);
}
.account-card strong {
  display: block;
  margin-bottom: 10px;
  font-size: 20px;
}
.orders-table {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.orders-table > div {
  display: grid;
  grid-template-columns: 1.1fr 1fr .8fr 120px;
  gap: 18px;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}
.orders-table > div:last-child {
  border-bottom: 0;
}
.orders-table .table-head {
  background: var(--soft);
  font-size: 13px;
  color: var(--muted);
}
.orders-table button {
  padding: 8px 12px;
}
.account-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.account-grid div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}
.account-grid button {
  margin-top: 10px;
}
.process b {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  margin-bottom: 12px;
}

.responsive-set {
  margin-top: 72px;
}
.responsive-set h2 {
  color: #fff;
}
.devices {
  display: flex;
  gap: 46px 34px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.tablet {
  width: 768px;
  min-height: 900px;
  padding: 28px;
}
.mobile {
  width: 390px;
  min-height: 820px;
  padding: 18px;
}
.mobile-nav {
  height: 54px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}
.mobile-nav button {
  padding: 8px 12px;
  font-size: 12px;
}
.hero-photo.small {
  min-height: 220px;
  padding: 24px;
}
.tablet-stack {
  grid-template-columns: 1fr;
}
.tablet-products {
  grid-template-columns: repeat(2, 1fr);
}
.mobile .thumb {
  height: 120px;
}
.mobile-gallery {
  height: 260px;
}
.mobile select,
.mobile button {
  width: 100%;
  margin-bottom: 10px;
}
.mobile .inputs {
  grid-template-columns: 1fr;
  margin-bottom: 18px;
}
.mobile label {
  display: block;
  margin: 12px 0;
}
.account-mobile-alert {
  display: grid;
  gap: 8px;
  padding: 18px;
  background: #111718;
  color: #fff;
  border-radius: 8px;
  margin-bottom: 18px;
}
.account-mobile-alert span {
  color: #cfd9d6;
}
.account-mobile-list {
  display: grid;
  gap: 10px;
}
.account-mobile-list div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
}
.account-mobile-list span {
  color: var(--muted);
  font-size: 13px;
  text-align: right;
}

@media (max-width: 1200px) {
  .board {
    width: auto;
    padding: 28px;
  }
  .desktop-grid,
  .devices {
    display: grid;
    grid-template-columns: 1fr;
  }
}