body { font-family: system-ui, sans-serif; padding: 20px; max-width:800px; margin:auto; }
input, button { font-size: 1rem; padding: 8px; margin: 2px; }
.card { border: 1px solid #ddd; padding: 12px; border-radius: 8px; margin-bottom: 12px; }
table { width:100%; border-collapse: collapse; }
th, td { text-align:left; padding:8px; border-bottom:1px solid #eee; }