/* Reset and typography. */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page-bg, var(--paper));
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01', 'cv11';
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
h1 { font-size: var(--text-3xl); font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); }

p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }

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

.icon { width: 18px; height: 18px; flex-shrink: 0; }
.icon-sm { width: 16px; height: 16px; }
.icon-lg { width: 22px; height: 22px; }

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: var(--r-sm); }

::selection { background: var(--accent); color: var(--on-accent); }

.num { font-variant-numeric: tabular-nums; }
.display { font-family: var(--font-display); }
.muted { color: var(--muted); }
.sr-only {
  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: 16px; top: -48px; z-index: 100;
  padding: 10px 14px; border-radius: var(--r-md);
  background: var(--dark); color: var(--on-dark); font-weight: 700;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; color: var(--on-dark); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}