/* Reset + 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; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}
body {
  margin: 0;
  font: var(--text-body);
  color: var(--text-primary);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); }
ul, ol { padding-left: 1.2em; }
h1, h2, h3, h4 { margin: 0; color: var(--text-primary); text-wrap: balance; }
p { margin: 0; }
button { font-family: var(--font-sans); }

/* focus visibility (WCAG) */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--ember-500);
  outline-offset: 2px;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
@media (max-width: 640px) {
  .container { padding: 0 var(--space-4); }
}

.section { padding: var(--space-20) 0; }
@media (max-width: 640px) {
  .section { padding: var(--space-12) 0; }
}
.section--tight { padding: var(--space-12) 0; }
.section--inverse { background: var(--surface-inverse); color: var(--text-inverse); }
.section--inverse-2 { background: var(--surface-inverse-2); color: var(--text-inverse); }
.section--sunken { background: var(--surface-sunken); }
.section--bordered { border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }

.eyebrow {
  font: var(--text-label);
  letter-spacing: var(--tracking-label);
  color: var(--ember-500);
  text-transform: uppercase;
}
.section--inverse .eyebrow, .section--inverse-2 .eyebrow { color: var(--ember-400); }

.display-lg { font: var(--text-display-lg); text-wrap: balance; letter-spacing: -0.01em; }
.display-md { font: var(--text-display-md); text-wrap: balance; }
.h1 { font: var(--text-h1); }
.h2 { font: var(--text-h2); }
.h3 { font: var(--text-h3); }
.body-lg { font: var(--text-body-lg); color: var(--text-secondary); max-width: 65ch; }
.body-muted { color: var(--text-muted); }
.section--inverse .body-lg, .section--inverse-2 .body-lg,
.section--inverse p, .section--inverse-2 p { color: var(--text-inverse-muted); }

.section--inverse a:not(.btn), .section--inverse-2 a:not(.btn) { color: #fff; text-decoration: underline; text-underline-offset: 2px; }
.section--inverse a:not(.btn):hover, .section--inverse-2 a:not(.btn):hover { color: var(--ember-400); }

.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;
}

.skip-link {
  position: absolute; left: var(--space-4); top: -60px;
  background: var(--ink-950); color: #fff; padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm); z-index: 100; transition: top var(--duration-base) var(--ease-standard);
}
.skip-link:focus { top: var(--space-4); }