* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas-light);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-dark); }

::selection { background: var(--green-signal); color: var(--canvas-dark); }

button { font-family: inherit; }

.mono { font-family: var(--font-mono); }

.page {
  max-width: var(--content-max);
  margin: 0 auto;
  background: var(--canvas-light);
}

/* Mission Control dark-surface grid texture — hero/engine/glass-box/footer */
.engineering-grid {
  background-image:
    linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
  background-size: 24px 24px;
}

@media (prefers-reduced-motion: reduce) {
  [data-anim] {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    width: 100% !important;
  }
}

.section {
  padding: var(--section-pad-y) var(--section-pad-x);
  border-top: 1px solid var(--border-light);
}

.section--alt { background: var(--card); }

.section--dark {
  background: var(--canvas-dark);
  color: var(--text-on-dark);
  border-top: 1px solid var(--border-dark);
}
.section--dark .section-title { color: var(--text-on-dark); }

.section--narrow {
  max-width: 840px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 44px;
}

.section-header--center { text-align: center; }

.section-sub {
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-light-body);
  max-width: 520px;
  margin: 14px 0 0;
}
.section-header--center .section-sub { margin-left: auto; margin-right: auto; }
.section--dark .section-sub { color: var(--text-dark-body); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light-muted);
  margin-bottom: 14px;
}

.eyebrow--accent { color: var(--green); font-weight: 600; font-size: 12.5px; letter-spacing: 0.09em; }
.eyebrow--signal { color: var(--green-signal); font-weight: 600; font-size: 12.5px; letter-spacing: 0.09em; }
.eyebrow--tint { color: var(--green-tint); }
.eyebrow--muted-dark { color: var(--text-dark-muted); }

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 38px;
  margin: 0;
  letter-spacing: -0.01em;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}