/**
 * base.css — reset, typography and layout primitives.
 */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: var(--leading-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-s);
  line-height: var(--leading-tight);
  font-weight: 650;
  letter-spacing: -0.018em;
  text-wrap: balance;
}
h1 { font-size: var(--step-5); letter-spacing: -0.028em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); letter-spacing: -0.01em; }

p { margin: 0 0 var(--space-s); max-width: var(--measure); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 var(--space-s); padding-left: 1.15em; }
li { margin-bottom: var(--space-2xs); }

a {
  color: inherit;
  text-decoration-color: var(--rule-strong);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  transition: text-decoration-color 160ms var(--ease-out), color 160ms var(--ease-out);
}
a:hover { text-decoration-color: currentColor; }

img, svg { max-width: 100%; display: block; }

hr { border: 0; border-top: 1px solid var(--rule); margin: var(--space-xl) 0; }

/* ------------------------------------------------------------- utilities */

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; top: 0; left: 0;
  transform: translateY(-120%);
  z-index: 100;
  background: var(--navy);
  color: var(--white);
  padding: var(--space-xs) var(--space-m);
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus-visible { transform: translateY(0); }

:where(a, button, input, [tabindex]):focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 2px;
}

.page      { max-width: var(--page-max); margin-inline: auto; padding-inline: var(--gutter); }
.page--wide{ max-width: 96rem; }
.section   { padding-block: var(--space-3xl); }

.eyebrow {
  font-size: var(--step--1);
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 var(--space-s);
  display: flex;
  align-items: baseline;
  gap: 0.75em;
}
.eyebrow::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
  transform: translateY(-0.28em);
}

.lede {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-muted);
  max-width: 58ch;
  font-weight: 380;
}

/* Reveal-on-scroll: opt-in, and a no-op under reduced motion. */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 620ms var(--ease-out), transform 620ms var(--ease-out);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

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