body { font-family: sans-serif; margin: 0; padding: 12px; }
#tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.tab { flex: 1; padding: 10px; border: none; background: #eee; border-radius: 8px; cursor: pointer; }
.tab.active { background: #2481cc; color: white; }
form { display: flex; flex-direction: column; gap: 8px; }
input, select, textarea, button { padding: 8px; font-size: 14px; }
.result { padding: 8px; border-bottom: 1px solid #ddd; }