/* =============================================================================
   base.css — reset, typography, layout primitives
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.5;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, canvas, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p { margin: 0; }
button { font: inherit; color: inherit; cursor: pointer; }
section[id] { scroll-margin-top: 80px; }
::selection { background: var(--volt); color: var(--ink); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

.skip-link {
  position: fixed; left: 12px; top: -60px; z-index: 999;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: var(--r-pill);
  transition: top .2s;
}
.skip-link:focus { top: 12px; }

/* ---- Layout primitives ---- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: calc(var(--section-y) * .6); }
.section__head { display: grid; gap: 1.25rem; margin-bottom: clamp(2rem, 5vw, 4rem); max-width: 60rem; }
.section__head--center { margin-inline: auto; text-align: center; justify-items: center; }

/* ---- Type ---- */
.display, .h2 { font-weight: 500; letter-spacing: -0.055em; line-height: .94; text-wrap: balance; }
.display { font-size: var(--fs-display); }
.h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-weight: 500; letter-spacing: -0.03em; line-height: 1.15; }
.lede { font-size: var(--fs-lede); line-height: 1.4; color: var(--muted); max-width: 40rem; letter-spacing: -0.02em; text-wrap: pretty; }
.lede--light { color: var(--on-dark-muted); }
.mono, .eyebrow { font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: .02em; text-transform: uppercase; }
.eyebrow { color: var(--muted); }
.eyebrow--light { color: var(--on-dark-muted); }

/* ---- Reveal animation states (activated by js/modules/reveal.js, only when JS is on) ---- */
.js [data-reveal] {
  opacity: 0; transform: translateY(28px);
  transition: opacity var(--dur) var(--ease-out) var(--d, 0s), transform var(--dur) var(--ease-out) var(--d, 0s);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

/* split-heading words: each word sits in a clipping mask and slides up. The mask is padded at the sides and bottom
   (cancelled by negative margins) so tight letter-spacing never lets a glyph overhang it and get clipped */
.split-word { display: inline-block; overflow: hidden; vertical-align: top; padding: 0 .1em .12em; margin: 0 -.1em -.12em; }
.split-word > span {
  display: inline-block; transform: translateY(110%);
  transition: transform 1.1s var(--ease-out) calc(var(--i, 0) * 45ms);
}
.is-in .split-word > span, .split-word.is-in > span { transform: none; }
[data-split].is-in .split-word > span { transform: none; }

/* scrubbed paragraph words (opacity driven by scroll) */
.scrub-word { opacity: .14; transition: opacity .25s linear; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal], .split-word > span { transition: none !important; transform: none !important; opacity: 1 !important; }
  .scrub-word { opacity: 1 !important; }
}