*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body { font-family: system-ui, -apple-system, sans-serif; line-height: 1.5; color: #1a1a1a; background: #f5f5f5; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font: inherit; }
input, select, textarea { font: inherit; }
ul { list-style: none; }
img { max-width: 100%; }