.khp-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.khp-card { min-width:0; border:1px solid var(--line); border-radius:12px; padding:16px; }
.khp-card h3 { margin-top:0; }
.khp-route { margin:16px 0; }
.khp-fare { display:block; color:var(--muted); font-size:.95rem; }
.khp-adults { display:block; max-width:260px; }
.khp-error { color:#a51c22; font-size:1rem; margin:4px 0; }
.khp-error:empty { display:none; }
.khp-result { background:var(--soft); padding:12px; border-radius:8px; margin-top:16px; }
.khp-result p { margin:8px 0; }
.khp-empty { font-weight:600; }
.khp-comparison + .khp-comparison { border-top:1px solid var(--line); padding-top:8px; }
.khp-explain { margin-top:24px; }
.khp-tool input[aria-invalid="true"] { border:2px solid #a51c22; }
@media(max-width:620px) { .khp-grid { grid-template-columns:1fr; } }