:root{font-family:system-ui,Arial}.container{max-width:900px;margin:24px auto;padding:16px}.card{border:1px solid #eee;padding:16px;border-radius:8px;margin-bottom:16px}input,button{padding:8px;margin:6px 0}button{cursor:pointer}.table{width:100%;border-collapse:collapse}.table th,.table td{border:1px solid #ddd;padding:8px}.badge{padding:4px 8px;border-radius:999px;background:#eee}*{margin:0;padding:0;box-sizing:border-box}