:root {
  --ink: #101713;
  --forest: #17231d;
  --forest-soft: #223129;
  --paper: #fbfaf6;
  --ivory: #f3efe5;
  --sand: #e5dac7;
  --bronze: #8b5c2a;
  --bronze-light: #d2ae78;
  --sage: #66736b;
  --muted: #5d665f;
  --line: rgba(16, 23, 19, 0.15);
  --white-line: rgba(255, 255, 255, 0.18);
  --success: #25623e;
  --error: #9d3028;
  --shadow-sm: 0 12px 28px rgba(18, 27, 22, 0.08);
  --shadow-lg: 0 32px 80px rgba(11, 18, 14, 0.18);
  --radius-sm: 0.35rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --container: 78rem;
  --gutter: clamp(1rem, 4vw, 3rem);
  --section: clamp(4.5rem, 9vw, 8.5rem);
  --ease: 220ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }
img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
button, input, select, textarea { font: inherit; }
button, a { touch-action: manipulation; }
h1, h2, h3, p, figure { margin-top: 0; }
h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.035em;
}
h1 { font-size: clamp(2.7rem, 7vw, 6.6rem); max-width: 12ch; margin-bottom: 1.5rem; }
h2 { font-size: clamp(2.2rem, 4.5vw, 4.4rem); max-width: 16ch; margin-bottom: 1.25rem; }
h3 { font-size: clamp(1.35rem, 2vw, 1.8rem); margin-bottom: 0.75rem; }
p { max-width: 68ch; }
:focus-visible { outline: 3px solid var(--bronze-light); outline-offset: 4px; }

.skip-link {
  position: fixed;
  inset-inline-start: 1rem;
  top: -5rem;
  z-index: 1000;
  padding: 0.8rem 1rem;
  color: white;
  background: var(--ink);
}
.skip-link:focus { top: 1rem; }
.container { width: min(100% - (2 * var(--gutter)), var(--container)); margin-inline: auto; }
.section { padding-block: var(--section); }
.section--ivory { background: var(--ivory); }
.section--dark { color: #f8f5ed; background: var(--forest); }
.section--sand { background: var(--sand); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
  color: var(--bronze);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
}
.section--dark .eyebrow { color: var(--bronze-light); }
.eyebrow::before { content: ""; width: 2.5rem; height: 1px; background: currentColor; }
.lede { color: var(--muted); font-size: clamp(1.05rem, 1.8vw, 1.25rem); max-width: 58ch; }
.section--dark .lede { color: rgba(255, 255, 255, 0.72); }
.section-head { display: grid; gap: 1.5rem; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section-head > * { margin-bottom: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  color: #fff;
  background: rgba(16, 23, 19, 0.96);
  border-bottom: 1px solid var(--white-line);
  backdrop-filter: blur(16px);
}
.header-inner { min-height: 5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: 0.8rem; text-decoration: none; min-height: 3rem; }
.brand-mark { display: grid; place-items: center; width: 2.1rem; height: 3rem; flex: 0 0 auto; }
.brand-logo { width: 100%; height: 100%; object-fit: contain; }
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { font-family: Georgia, serif; font-size: 1.1rem; font-weight: 500; }
.brand-copy span { color: rgba(255,255,255,.62); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; }
.nav-toggle { display: grid; place-items: center; width: 3rem; height: 3rem; color: #fff; background: transparent; border: 1px solid var(--white-line); cursor: pointer; }
.nav-toggle svg { width: 1.35rem; }
.site-nav {
  position: fixed;
  inset: 5rem 0 auto;
  display: none;
  padding: 1.2rem var(--gutter) 1.8rem;
  color: #fff;
  background: var(--ink);
  box-shadow: var(--shadow-lg);
}
.site-nav[data-open="true"] { display: grid; }
.site-nav a { display: flex; align-items: center; min-height: 3rem; text-decoration: none; border-bottom: 1px solid var(--white-line); }
.nav-actions { display: grid; gap: 0.65rem; padding-top: 1rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 3rem;
  padding: 0.8rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease);
}
.button:hover { transform: translateY(-2px); }
.button--primary { color: #fff; background: var(--bronze); }
.button--primary:hover { background: #724719; }
.button--light { color: var(--ink); background: #fff; }
.button--outline { color: inherit; border-color: currentColor; background: transparent; }
.button--outline:hover { color: var(--ink); background: #fff; border-color: #fff; }
.button--document { color: #fff; background: var(--ink); border-color: var(--ink); }
.button--document:hover { color: #fff; background: var(--bronze); border-color: var(--bronze); }
.button svg { width: 1.1rem; height: 1.1rem; flex: 0 0 auto; }

.hero { position: relative; min-height: calc(100dvh - 5rem); display: grid; color: #fff; background: var(--forest); isolation: isolate; }
.hero-media { position: absolute; inset: 0; z-index: -2; }
.hero-media picture, .hero-media img { width: 100%; height: 100%; }
.hero-media img { object-fit: cover; object-position: 58% center; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(10,16,12,.94) 0%, rgba(10,16,12,.77) 45%, rgba(10,16,12,.18) 78%); }
.hero-inner { display: grid; align-content: end; padding-block: clamp(5rem, 12vw, 9rem) 3rem; }
.hero .eyebrow { color: var(--bronze-light); }
.hero-copy { max-width: 51rem; }
.hero-copy > p { color: rgba(255,255,255,.8); font-size: clamp(1.05rem, 2vw, 1.28rem); max-width: 51ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; margin-top: clamp(2.5rem, 6vw, 5rem); padding-top: 1.25rem; border-top: 1px solid var(--white-line); }
.hero-proof span { color: rgba(255,255,255,.72); font-size: 0.86rem; }
.hero-proof strong { display: block; color: #fff; font-size: 0.96rem; }
.visual-label { position: absolute; inset-inline: 1rem auto; bottom: 1rem; padding: 0.35rem 0.6rem; color: #fff; background: rgba(16,23,19,.78); font-size: 0.68rem; letter-spacing: .08em; text-transform: uppercase; }

.trust-strip { background: var(--ink); color: #fff; border-top: 1px solid var(--white-line); }
.trust-grid { display: grid; grid-template-columns: repeat(2, 1fr); }
.trust-item { padding: 1.35rem 1rem; border-inline-end: 1px solid var(--white-line); border-bottom: 1px solid var(--white-line); }
.trust-item strong { display: block; font-family: Georgia, serif; font-size: 1.15rem; font-weight: 500; }
.trust-item span { color: rgba(255,255,255,.6); font-size: .78rem; }

.selector-layout, .split { display: grid; gap: 2rem; align-items: center; }
.system-tabs { display: grid; gap: 0.75rem; margin-block: 2rem; }
.system-tab { position: relative; width: 100%; padding: 1.25rem 3rem 1.25rem 1.25rem; text-align: start; color: var(--ink); background: transparent; border: 1px solid var(--line); cursor: pointer; transition: background var(--ease), border-color var(--ease); }
[dir="rtl"] .system-tab { padding: 1.25rem 1.25rem 1.25rem 3rem; }
.system-tab::after { content: "+"; position: absolute; inset-inline-end: 1.25rem; top: 50%; translate: 0 -50%; font-size: 1.5rem; }
.system-tab[aria-pressed="true"] { background: #fff; border-color: var(--bronze); box-shadow: var(--shadow-sm); }
.system-tab[aria-pressed="true"]::after { content: "−"; }
.system-tab strong { display: block; font-family: Georgia, serif; font-size: 1.35rem; font-weight: 500; }
.system-tab span { color: var(--muted); font-size: .9rem; }
.system-panel { display: none; padding: 1.25rem 0; }
.system-panel[data-active="true"] { display: block; }
.feature-list { display: grid; gap: .7rem; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-inline-start: 1.5rem; }
.feature-list li::before { content: ""; position: absolute; inset-inline-start: 0; top: .72em; width: .6rem; height: 1px; background: var(--bronze); }
.media-frame { position: relative; overflow: hidden; background: #e7e3da; box-shadow: var(--shadow-lg); }
.media-frame img { aspect-ratio: 4 / 3; object-fit: cover; }
.media-frame--tall img { aspect-ratio: 4 / 5; }

.benefit-grid, .application-grid, .catalog-grid, .process-grid { display: grid; gap: 1rem; }
.benefit-card { min-height: 16rem; padding: 1.5rem; border: 1px solid var(--line); background: rgba(255,255,255,.55); }
.benefit-card .number { display: block; margin-bottom: 3rem; color: var(--bronze); font: 500 1rem Georgia, serif; }
.benefit-card p { color: var(--muted); margin-bottom: 0; }
.application-card { min-height: 12rem; padding: 1.5rem; color: #fff; background: var(--forest-soft); border-top: 3px solid var(--bronze-light); }
.application-card p { color: rgba(255,255,255,.68); margin-bottom: 0; }

.spec-layout { display: grid; gap: 2rem; }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { padding: 1rem; text-align: start; vertical-align: top; border-bottom: 1px solid var(--line); }
.spec-table th { width: 36%; color: var(--muted); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }
.spec-note { padding: 1rem; color: var(--muted); background: var(--ivory); border-inline-start: 3px solid var(--bronze); font-size: .9rem; }
.document-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1rem; margin-top: 1.25rem; }
.document-meta { color: var(--muted); font-size: .82rem; letter-spacing: .04em; }

.catalog-card { position: relative; overflow: hidden; background: #fff; border: 1px solid var(--line); }
.catalog-card picture img { aspect-ratio: 4 / 3; object-fit: cover; transition: transform 500ms ease; }
.catalog-card:hover picture img { transform: scale(1.025); }
.catalog-body { padding: 1.35rem; }
.catalog-body p { color: var(--muted); margin-bottom: 1.2rem; }
.text-link { display: inline-flex; gap: .5rem; align-items: center; min-height: 2.75rem; color: var(--bronze); font-weight: 750; }

.construction-grid { display: grid; gap: 1rem; margin-top: 3rem; }
.construction-card { padding: 1.5rem; border: 1px solid var(--white-line); }
.construction-card span { color: var(--bronze-light); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; }
.construction-card p { color: rgba(255,255,255,.68); margin-bottom: 0; }

.process-card { position: relative; padding: 1.5rem; border-top: 1px solid var(--line); }
.process-card b { display: block; margin-bottom: 2.5rem; color: var(--bronze); font: 500 1.5rem Georgia, serif; }
.process-card p { color: var(--muted); margin-bottom: 0; }

.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
.project-card { position: relative; overflow: hidden; margin: 0; background: var(--forest); }
.project-card img { aspect-ratio: 1 / 1.15; object-fit: cover; transition: transform 500ms ease; }
.project-card:hover img { transform: scale(1.03); }
.project-card figcaption { position: absolute; inset: auto 0 0; padding: 2rem .8rem .7rem; color: #fff; background: linear-gradient(transparent, rgba(8,14,10,.82)); font-size: .72rem; }

.area-layout { display: grid; gap: 2rem; }
.knowledge-section { background: #fff; }
.knowledge-grid { display: grid; gap: 1rem; }
.answer-card { padding: clamp(1.4rem, 3vw, 2.25rem); background: var(--ivory); border: 1px solid var(--line); border-top: 3px solid var(--bronze); }
.answer-card h3 { margin-bottom: 1rem; font-size: clamp(1.45rem, 2.5vw, 2rem); }
.answer-card p { margin: 0; color: var(--muted); }
.questions-layout { display: grid; gap: 2rem; align-items: start; }
.questions { border-top: 1px solid var(--line); }
.questions details { border-bottom: 1px solid var(--line); }
.questions summary { position: relative; padding: 1.3rem 3rem 1.3rem 0; font-family: Georgia, "Times New Roman", serif; font-size: 1.2rem; line-height: 1.3; cursor: pointer; list-style: none; }
[dir="rtl"] .questions summary { padding: 1.3rem 0 1.3rem 3rem; }
.questions summary::-webkit-details-marker { display: none; }
.questions summary::after { content: "+"; position: absolute; inset-inline-end: .35rem; top: 1.25rem; color: var(--bronze); font-family: Inter, sans-serif; font-size: 1.35rem; }
.questions details[open] summary::after { content: "−"; }
.questions details p { padding: 0 0 1.4rem; color: var(--muted); }
.source-notes { padding-top: clamp(3.5rem, 7vw, 6rem); padding-bottom: clamp(3.5rem, 7vw, 6rem); background: var(--charcoal); color: #fff; }
.source-notes__inner { display: grid; gap: 1.5rem; }
.source-notes h2 { max-width: 18ch; }
.source-notes p { color: rgba(255, 255, 255, 0.72); }
.source-notes ol { display: grid; gap: .75rem; margin: 0; padding-inline-start: 1.25rem; }
.source-notes a { color: #fff; text-decoration-color: var(--bronze-light); text-underline-offset: .2em; }
.source-notes a:hover { color: var(--bronze-light); }
.content-attribution { margin: .5rem 0 0; padding-top: 1.25rem; border-top: 1px solid rgba(255, 255, 255, 0.16); font-size: .9rem; }
.area-card { padding: 1.5rem; background: #fff; border: 1px solid var(--line); }
.business-list { display: grid; gap: .75rem; margin: 0; padding: 0; list-style: none; }
.business-list li { padding-bottom: .75rem; border-bottom: 1px solid var(--line); }
.business-list strong { display: block; font-size: .76rem; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }

.enquiry-layout { display: grid; gap: 2.5rem; }
.form-card { color: var(--ink); background: #fff; padding: clamp(1.25rem, 4vw, 2.5rem); box-shadow: var(--shadow-lg); }
.form-grid { display: grid; gap: 1rem; }
.field { display: grid; gap: .42rem; }
.field label, .field legend { font-size: .83rem; font-weight: 750; }
.field input, .field select, .field textarea { width: 100%; min-height: 3rem; padding: .75rem .85rem; color: var(--ink); background: #fff; border: 1px solid #a6aaa6; border-radius: var(--radius-sm); }
.field textarea { min-height: 9rem; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--bronze); outline: 3px solid rgba(139,92,42,.18); }
.field small { color: var(--muted); }
.field--wide { grid-column: 1 / -1; }
.checkbox { display: grid; grid-template-columns: 1.25rem 1fr; gap: .7rem; align-items: start; }
.checkbox input { width: 1.15rem; height: 1.15rem; margin-top: .25rem; accent-color: var(--bronze); }
.honeypot { position: absolute !important; width: 1px !important; height: 1px !important; overflow: hidden !important; clip: rect(0 0 0 0) !important; white-space: nowrap !important; }
.form-status { min-height: 1.5rem; margin-top: 1rem; font-weight: 700; }
.form-status[data-state="success"] { color: var(--success); }
.form-status[data-state="error"] { color: var(--error); }
.form-card button[disabled] { cursor: wait; opacity: .58; }

.site-footer { color: rgba(255,255,255,.7); background: #0a100d; padding-block: 4rem 6.5rem; }
.footer-grid { display: grid; gap: 2rem; }
.footer-grid h2 { color: #fff; font-size: 1.65rem; }
.footer-links { display: grid; gap: .3rem; }
.footer-links a { min-height: 2.5rem; display: flex; align-items: center; }
.footer-meta { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--white-line); font-size: .78rem; }
.mobile-cta { position: fixed; inset: auto .75rem .75rem; z-index: 90; display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; padding: .5rem; background: rgba(16,23,19,.94); box-shadow: var(--shadow-lg); backdrop-filter: blur(12px); }

@media (min-width: 42rem) {
  .section-head { grid-template-columns: minmax(0, 1.15fr) minmax(18rem, .85fr); align-items: end; }
  .trust-grid { grid-template-columns: repeat(4, 1fr); }
  .benefit-grid, .application-grid, .process-grid { grid-template-columns: repeat(2, 1fr); }
  .knowledge-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: repeat(4, 1fr); }
  .form-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.2fr .8fr .8fr; }
}

@media (min-width: 62rem) {
  .nav-toggle { display: none; }
  .site-nav { position: static; display: flex !important; align-items: center; gap: 1.25rem; padding: 0; background: transparent; box-shadow: none; }
  .site-nav > a { min-height: 3rem; border: 0; color: rgba(255,255,255,.74); font-size: .86rem; }
  .site-nav > a:hover { color: #fff; }
  .nav-actions { display: flex; gap: .6rem; padding: 0; margin-inline-start: .5rem; }
  .nav-actions .button { min-height: 2.65rem; padding-block: .6rem; }
  .selector-layout, .split { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(3rem, 7vw, 7rem); }
  .split--reverse > :first-child { order: 2; }
  .benefit-grid { grid-template-columns: repeat(4, 1fr); }
  .application-grid { grid-template-columns: repeat(4, 1fr); }
  .catalog-grid { grid-template-columns: repeat(3, 1fr); }
  .construction-grid { grid-template-columns: repeat(3, 1fr); }
  .process-grid { grid-template-columns: repeat(4, 1fr); }
  .spec-layout { grid-template-columns: minmax(0, 1fr) minmax(24rem, .9fr); gap: 4rem; align-items: start; }
  .area-layout { grid-template-columns: 1fr 1fr; gap: 4rem; }
  .questions-layout { grid-template-columns: minmax(18rem,.75fr) minmax(0,1.25fr); gap: 5rem; }
  .enquiry-layout { grid-template-columns: minmax(18rem,.75fr) minmax(0,1.25fr); gap: 5rem; align-items: start; }
  .mobile-cta { display: none; }
  .site-footer { padding-bottom: 4rem; }
}

@media (max-width: 24rem) {
  .brand-copy span { display: none; }
  .hero-actions .button { width: 100%; }
  .project-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}