*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: 96px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh;
  font-family: var(--font-ui); font-size: 1rem; line-height: 1.65;
  color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
  transition: background-color .4s var(--ease), color .4s var(--ease);
}
h1, h2, h3, h4 { margin: 0; line-height: 1.12; letter-spacing: -0.02em; font-weight: 700; }
h2 { font-size: clamp(1.85rem, 4vw, 2.75rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: var(--accent); text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
code, .mono { font-family: var(--font-code); }
::selection { background: rgba(59, 130, 246, .28); }

:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 8px; }
:root[data-theme='dark'] :focus-visible { outline-color: var(--mint); }

.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 200; padding: 10px 16px; border-radius: var(--r-sm);
  background: var(--navy); color: #fff; transform: translateY(-160%); transition: transform .2s;
}
.skip-link:focus { transform: none; }
.icon { width: 1.25em; height: 1.25em; flex: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}