/* ==========================================================
   Reset, typography, layout primitives
   ========================================================== */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Blueprint grid + grain atmosphere */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 85%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, svg, canvas, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--accent); color: #0a0b0d; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-stretch: 115%;
  font-weight: 750;
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 0 0 var(--s-2);
  text-wrap: balance;
}
h1 { font-size: var(--fs-hero); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-lg); font-stretch: 105%; letter-spacing: -0.01em; line-height: 1.2; }
p { margin: 0 0 var(--s-2); text-wrap: pretty; }
strong { color: var(--text); font-weight: 650; }

.container { width: min(100% - 2 * var(--gutter), var(--container)); margin-inline: auto; }
.section { padding-block: clamp(4.5rem, 10vw, 8.5rem); position: relative; }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section--line { border-top: 1px solid var(--line); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s-3);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}
.lead { font-size: clamp(1.05rem, 0.95rem + 0.45vw, 1.3rem); color: var(--muted); max-width: 46ch; line-height: 1.55; }
.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }

.section-head { display: grid; gap: var(--s-3); grid-template-columns: 1fr; margin-bottom: var(--s-6); }
@media (min-width: 900px) {
  .section-head { grid-template-columns: 1.1fr 1fr; align-items: end; }
  .section-head p { justify-self: end; }
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: var(--accent);
  color: #0a0b0d;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 200;
}
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* Scroll reveal */
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); transition-delay: var(--d, 0s); }
[data-reveal].is-in { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}