:root {
  --ink: #11161c;
  --steel: #1d2731;
  --steel-2: #33414e;
  --muted: #687684;
  --line: #d9e0e6;
  --paper: #f4f6f7;
  --white: #ffffff;
  --accent: #c85f1c;
  --accent-dark: #94400f;
  --blue: #315f7b;
  --shadow: 0 18px 45px rgba(17, 22, 28, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: linear-gradient(180deg, #ffffff 0, var(--paper) 42rem); }
a { color: inherit; text-decoration: none; }
p { color: #465360; line-height: 1.68; }
h1, h2, h3 { margin: 0; line-height: 1.02; letter-spacing: -0.035em; }
h1 { font-size: clamp(3rem, 6.2vw, 5.8rem); max-width: 13.5ch; }
h2 { font-size: clamp(2rem, 4vw, 3.8rem); }
h3 { font-size: 1.25rem; }
ul { margin: 1rem 0 0; padding-left: 1.1rem; color: #465360; line-height: 1.8; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
  padding: 0.8rem clamp(1rem, 4vw, 3rem);
  color: var(--white);
  background: rgba(17, 22, 28, 0.95);
  border-bottom: 4px solid var(--accent);
  box-shadow: 0 12px 35px rgba(17, 22, 28, 0.2);
}
.brand { display: inline-flex; align-items: center; gap: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; }
.brand strong, .brand small { display: block; }
.brand small { color: #b9c3cc; font-size: 0.72rem; margin-top: 0.1rem; }
.brand-mark { display: grid; place-items: center; width: 3rem; height: 3rem; color: var(--ink); background: var(--white); font-weight: 900; letter-spacing: -0.08em; }
.site-nav { display: flex; align-items: center; gap: 0.2rem; }
.site-nav a { color: #d9e0e6; padding: 0.72rem 0.8rem; border: 1px solid transparent; font-weight: 700; }
.site-nav a:hover, .site-nav a.active { color: var(--white); border-color: rgba(255,255,255,0.24); background: rgba(255,255,255,0.08); }
.menu-toggle { display: none; color: var(--white); background: transparent; border: 1px solid rgba(255,255,255,0.28); padding: 0.7rem 0.9rem; }

.supplier-hero, .hero-bottom-bar, .product-systems, .standards-section, .document-cta, .page-hero, .system-grid, .copy-section, .detail-hero, .detail-grid, .status-panel, .library-grid, .contact-layout {
  width: min(1240px, calc(100% - clamp(2rem, 6vw, 6rem)));
  margin-inline: auto;
}
.home-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 24%, rgba(200, 95, 28, 0.16), transparent 24rem),
    linear-gradient(135deg, #ffffff 0 46%, #eef2f5 46% 100%);
}
.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(17,22,28,0.045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(17,22,28,0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.88), transparent 82%);
}
.supplier-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(380px, 0.98fr);
  gap: clamp(2.5rem, 6vw, 5.5rem);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(4rem, 7vw, 6rem) 0 clamp(2.5rem, 5vw, 4.5rem);
}
.hero-copy {
  padding: clamp(1rem, 2vw, 1.5rem) 0;
}
.hero-copy p:not(.eyebrow), .page-hero p { max-width: 48rem; font-size: 1.13rem; }
.eyebrow, .section-kicker { color: var(--accent); font-size: 0.78rem; font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 1.8rem; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 3rem; padding: 0 1.15rem; border: 1px solid var(--line); font-weight: 900; text-transform: uppercase; letter-spacing: 0.055em; font-size: 0.85rem; }
.btn.primary { color: var(--white); background: var(--accent); border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-dark); }
.btn.ghost { color: var(--ink); background: var(--white); }
.btn.ghost.dark { background: transparent; color: var(--ink); border-color: #b8c2cb; }
.btn.ghost:hover { border-color: var(--accent); }
.text-link { color: var(--accent-dark); font-weight: 900; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 0.25rem; }

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}
.hero-proof span {
  padding: 0.7rem 0.85rem;
  color: var(--steel);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(17,22,28,0.06);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.supplier-visual, .image-block {
  position: relative;
  overflow: hidden;
  min-height: 34rem;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.82), rgba(255,255,255,0.14)),
    linear-gradient(135deg, #b8c2cb, #eef1f3 40%, #596674);
  border: 1px solid rgba(17,22,28,0.12);
  border-radius: 22px;
  box-shadow: 0 30px 80px rgba(17, 22, 28, 0.22);
}
.supplier-visual::before, .image-block::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(90deg, rgba(17,22,28,0.16) 0 2px, transparent 2px 34px), linear-gradient(145deg, transparent 0 58%, rgba(200,95,28,0.78) 58% 65%, transparent 65%); }
.supplier-visual::after {
  content: "";
  position: absolute;
  left: 13%;
  right: 13%;
  top: 28%;
  height: 38%;
  border: 12px solid rgba(255,255,255,0.72);
  border-left-width: 26px;
  border-right-width: 26px;
  transform: skewY(-8deg);
  box-shadow: inset 0 0 0 1px rgba(17,22,28,0.18), 0 18px 40px rgba(17,22,28,0.16);
}
.product-callout { position: absolute; left: 1.4rem; top: 1.4rem; z-index: 2; width: min(24rem, calc(100% - 2.8rem)); padding: 1.25rem; color: var(--white); background: rgba(17,22,28,0.88); border-radius: 14px; }
.product-callout span, .system-card span, .library-card span { display: block; color: var(--accent); font-size: 0.75rem; font-weight: 900; letter-spacing: 0.13em; text-transform: uppercase; }
.product-callout strong { display: block; margin-top: 0.35rem; font-size: clamp(1.6rem, 3vw, 2.8rem); line-height: 1; }
.rail-grid { position: absolute; right: 1.25rem; bottom: 1.25rem; z-index: 2; display: grid; grid-template-columns: repeat(2, 1fr); width: min(20rem, 80%); background: var(--white); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; box-shadow: 0 18px 38px rgba(17,22,28,0.16); }
.rail-grid span { padding: 1rem; border: 1px solid var(--line); font-weight: 900; color: var(--steel); }

.hero-bottom-bar {
  padding: 0 0 clamp(2rem, 4vw, 3rem);
}
.hero-bottom-bar > div {
  display: grid;
  grid-template-columns: minmax(12rem, 0.42fr) 1fr;
  gap: 1rem;
  align-items: center;
  padding: 1.1rem 1.25rem;
  background: var(--ink);
  color: var(--white);
  border-radius: 16px;
  box-shadow: 0 18px 45px rgba(17,22,28,0.18);
}
.hero-bottom-bar strong { font-size: 1.05rem; }
.hero-bottom-bar span { color: #d8e0e7; line-height: 1.55; }

.product-systems, .standards-section, .document-cta, .copy-section, .detail-grid, .status-panel, .library-grid, .contact-layout { padding: clamp(4rem, 7vw, 6.5rem) 0; }
.section-heading { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 2rem; align-items: end; margin-bottom: 1.5rem; }
.section-heading h2 { max-width: 15ch; }
.system-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.system-card, .library-card, .detail-grid article { display: flex; flex-direction: column; gap: 0.95rem; min-height: 100%; padding: 1.1rem; background: var(--white); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 12px 34px rgba(17,22,28,0.08); }
.system-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); transition: 180ms ease; }
.system-card h2, .system-card h3, .library-card h2 { font-size: clamp(1.45rem, 2.2vw, 2.2rem); }
.image-block { min-height: 14rem; box-shadow: none; border-radius: 14px; }
.image-block.large { min-height: 30rem; }
.image-block.studs { background: linear-gradient(135deg, #d5dbe0, #ffffff 42%, #7a8792); }
.image-block.exterior { background: linear-gradient(135deg, #aeb8c1, #eef1f3 35%, #315f7b); }
.image-block.cfs { background: linear-gradient(135deg, #bac4cc, #ffffff 38%, #c85f1c); }

.standards-section, .document-cta, .copy-section.two-column, .status-panel { display: grid; grid-template-columns: 0.82fr 1.18fr; gap: clamp(2rem, 5vw, 4rem); border-top: 1px solid var(--line); }
.standard-list { display: grid; gap: 1rem; }
.standard-list article { padding: 1.35rem; background: var(--white); border-left: 5px solid var(--accent); border-radius: 0 16px 16px 0; box-shadow: 0 10px 28px rgba(17,22,28,0.07); }
.standard-list strong { font-size: 1.15rem; }
.document-cta { color: var(--white); background: var(--steel); width: 100%; max-width: none; padding-inline: max(1rem, calc((100vw - 1180px) / 2)); align-items: center; }
.document-cta p { color: #d9e0e6; }
.document-cta .btn.ghost.dark { color: var(--white); border-color: rgba(255,255,255,0.38); }

.page-hero.product-hero { padding: clamp(4rem, 8vw, 6rem) 0 clamp(2rem, 4vw, 3rem); }
.page-hero.product-hero h1 { max-width: 13ch; }
.catalog-cards { padding-bottom: clamp(2rem, 5vw, 4rem); }
.detail-hero { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; padding: clamp(4rem, 8vw, 6rem) 0; }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.detail-grid article { padding: 1.35rem; }
.detail-grid p { margin: 0.5rem 0 0; }
.status-panel { background: var(--white); border: 1px solid var(--line); padding: clamp(2rem, 5vw, 3.5rem); margin-bottom: 4rem; }
.library-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.library-card { padding: 1.35rem; }
.library-card button { align-self: flex-start; margin-top: auto; color: var(--muted); background: transparent; border: 1px solid var(--line); padding: 0.75rem 1rem; font-weight: 900; text-transform: uppercase; }

.contact-layout { display: grid; grid-template-columns: 0.86fr 1.14fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.contact-intro h1 { max-width: 12ch; }
.contact-reasons { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }
.contact-reasons span { padding: 0.65rem 0.8rem; border: 1px solid var(--line); background: var(--white); color: var(--steel); font-weight: 800; }
.inquiry-form { display: grid; gap: 1rem; padding: 1.25rem; border: 1px solid var(--line); background: var(--white); box-shadow: var(--shadow); }
label { display: grid; gap: 0.45rem; color: var(--ink); font-weight: 900; }
input, select, textarea { width: 100%; color: var(--ink); background: #f8fafb; border: 1px solid var(--line); padding: 0.9rem 1rem; font: inherit; }
textarea { resize: vertical; }
.form-note { margin: 0; font-size: 0.9rem; color: var(--muted); }

.site-footer { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 1.5rem; padding: 2.4rem clamp(1rem, 4vw, 3rem); color: var(--white); background: var(--ink); border-top: 5px solid var(--accent); }
.site-footer p { color: #c5ced6; margin: 0.45rem 0 0; }
.footer-brand strong { display: block; font-size: 1.15rem; }
.footer-links { display: grid; align-content: start; gap: 0.45rem; }
.footer-links h3 { color: var(--white); font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.09em; }
.footer-links a { color: #c5ced6; }
.footer-links a:hover { color: var(--white); text-decoration: underline; text-decoration-color: var(--accent); }

@media (max-width: 920px) {
  .menu-toggle { display: inline-flex; }
  .site-nav { position: absolute; left: 1rem; right: 1rem; top: calc(100% + 0.5rem); display: none; flex-direction: column; align-items: stretch; padding: 0.75rem; background: var(--ink); border: 1px solid rgba(255,255,255,0.18); }
  .site-nav.open { display: flex; }
  .supplier-hero, .section-heading, .standards-section, .document-cta, .copy-section.two-column, .detail-hero, .status-panel, .contact-layout { grid-template-columns: 1fr; }
  .system-grid, .detail-grid, .library-grid, .site-footer { grid-template-columns: 1fr; }
  .supplier-visual, .image-block.large { min-height: 22rem; }
}

@media (max-width: 540px) {
  h1 { font-size: clamp(2.35rem, 14vw, 3.6rem); }
  .brand strong { font-size: 0.86rem; }
  .brand-mark { width: 2.45rem; height: 2.45rem; }
  .rail-grid { width: calc(100% - 2rem); }
}