body { font-family: Arial, sans-serif; background:#f4f6f8; color:#111; margin:0; padding:20px; }
.container { max-width:1000px; margin:0 auto; }
.card { background:#fff; padding:16px; margin-bottom:16px; border-radius:8px; box-shadow:0 2px 6px rgba(0,0,0,0.06); }
.topbar { background:#222; color:#fff; padding:10px 20px; text-align:right; }
.topbar a{ color:#fff; text-decoration:none; }
table.list{ width:100%; border-collapse:collapse; }
table.list th, table.list td{ padding:8px; border-bottom:1px solid #eee; text-align:left; }
.error{ color:#a00; }
input, button { padding:8px; margin-top:6px; }