*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h, 6.5rem); /* set from the real header height in nav.js; clears the fixed .nav header when jumping to an #anchor */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--sz-base);
  line-height: 1.65;
  color: var(--c-ink);
  background: var(--c-ground);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

a   { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ol, ul { list-style: none; }

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--c-violet);
  outline-offset: 3px;
  border-radius: 0;
}

/* ── Scroll reveal ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .52s ease, transform .52s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── Shared type ─────────────────────────────────────────────── */
.eyebrow {
  display: block;
  font-size: var(--sz-xs);
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--c-violet);
  margin-bottom: var(--sp-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(var(--sz-2xl), 4vw, var(--sz-3xl));
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.025em;
  text-wrap: balance;
  color: var(--c-ink);
  margin-bottom: var(--sp-4);
}

.section-sub {
  font-size: var(--sz-md);
  color: var(--c-muted);
  line-height: 1.6;
  text-wrap: balance;
}

/* ── Shared section header ───────────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--sp-12);
}

code {
  font-size: .82em;
  font-family: 'SF Mono', 'Fira Code', monospace;
  background: var(--c-violet-tint);
  color: var(--c-violet);
  padding: .15em .42em;
  border-radius: 0;
}