body { font-family: system-ui, sans-serif; margin: 0; background: #f7f7f7; color: #111; }
.container { padding: 16px; max-width: 680px; margin: 0 auto; }
h1 { font-size: 20px; margin: 8px 0 16px; }
.card { background: #fff; padding: 12px; margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 8px; }
.empty { padding: 12px; color: #666; }