@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@500;700&display=swap");

:root {
  --bg: #eef5fa;
  --panel: rgba(255, 255, 255, 0.86);
  --line: rgba(49, 76, 101, 0.16);
  --text: #193042;
  --muted: #5a6f80;
  --accent: #4d85b0;
  --accent-deep: #294e68;
  --shadow: 0 22px 56px rgba(28, 56, 78, 0.12);
  --container: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f8fbfd 0%, #edf3f7 100%);
}

.grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(77, 133, 176, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 133, 176, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
  pointer-events: none;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 88%);
}

.topbar,
.hero,
.section,
.matrix-strip,
.footer {
  width: var(--container);
  margin: 0 auto;
}

.topbar {
  display: grid;
  grid-template-columns: 1.1fr auto auto;
  gap: 18px;
  align-items: center;
  padding: 22px 0 18px;
}

.brand-tag,
h1,
h2,
h3,
.cta,
.ghost {
  font-family: "JetBrains Mono", monospace;
}

.brand {
  display: grid;
  gap: 6px;
}

.brand-tag {
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a,
.footer-link {
  color: var(--text);
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: 0.96fr 1.04fr;
  gap: 20px;
  align-items: start;
  padding: 18px 0 10px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
}

h1, h2, h3, strong, p { margin-top: 0; }

h1 {
  margin-bottom: 18px;
  font-size: clamp(2.55rem, 5vw, 4.4rem);
  line-height: 1.02;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 1.06;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.14rem;
  line-height: 1.3;
}

p, li, input, textarea {
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.cta,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  text-decoration: none;
}

.cta {
  background: var(--accent-deep);
  color: #edf5fb;
}

.ghost {
  border: 1px solid var(--line);
}

.hero-image,
.signal-panel article,
.matrix-strip article,
.layer-stack article,
.blueprint-card,
.rail-card,
.contact-card,
.faq-grid article,
.use-case-grid article {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-image {
  padding: 16px;
}

.hero-image img,
.map-photo img,
.photo-card img,
.rail-photo img {
  display: block;
  width: 100%;
}

.hero-right {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 16px;
}

.signal-panel {
  display: grid;
  gap: 16px;
}

.signal-panel article,
.matrix-strip article,
.layer-stack article,
.blueprint-card,
.rail-card,
.use-case-grid article,
.contact-card,
.faq-grid article {
  padding: 20px;
}

.signal-panel span,
.layer-stack span {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
}

.matrix-strip,
.layer-stack,
.use-case-grid,
.faq-grid {
  display: grid;
  gap: 16px;
}

.matrix-strip {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding-top: 8px;
}

.section { padding: 74px 0 0; }

.section-copy { max-width: 760px; margin-bottom: 28px; }

.map-layout,
.rails-layout,
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}

.blueprint-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.blueprint-card.large {
  grid-column: span 2;
}

.blueprint-card.photo-card {
  padding: 12px;
}

.rails-layout {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.rail-photo {
  padding: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.use-case-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.contact-form {
  display: grid;
  gap: 12px;
}

input,
textarea {
  width: 100%;
  padding: 15px 16px;
  border: 1px solid var(--line);
  background: #fbfdff;
  color: var(--text);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.contact-details {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.faq-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 28px 0 40px;
}

@media (max-width: 1140px) {
  .topbar,
  .hero,
  .map-layout,
  .contact-section,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .hero-right,
  .matrix-strip,
  .blueprint-grid,
  .rails-layout,
  .use-case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blueprint-card.large {
    grid-column: span 1;
  }
}

@media (max-width: 760px) {
  :root { --container: min(100% - 24px, 100%); }
  .topbar,
  .footer { display: flex; flex-direction: column; align-items: flex-start; }
  .hero-right,
  .matrix-strip,
  .blueprint-grid,
  .rails-layout,
  .use-case-grid,
  .faq-grid { grid-template-columns: 1fr; }
}