*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin-top: 0; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 4px; }