.pay-freq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 9.75rem), 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    width: 100%;
    max-width: 100%;
}
.pay-freq-card {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    transition: border-color .15s, box-shadow .15s;
    min-width: 0;
}
.pay-freq-card.is-input { border-color: var(--color-primary); box-shadow: 0 0 0 1px var(--color-primary); background: color-mix(in srgb, var(--color-primary) 6%, var(--color-bg-card)); }
.pay-freq-card .pf-label { display: block; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 0.35rem; }
.pay-freq-card .pf-value { font-size: clamp(1rem, 2.5vw, 1.35rem); font-weight: 800; color: var(--color-secondary); line-height: 1.2; word-break: break-word; }
.pay-freq-card.is-input .pf-label::after { content: ' (entered)'; color: var(--color-primary); text-transform: none; font-weight: 600; }
.amort-table th { font-size: 0.72rem; text-transform: uppercase; color: var(--color-text-muted); font-weight: 700; padding: 0.5rem 0.4rem; border-bottom: 2px solid var(--color-border); }
.amort-table td { padding: 0.45rem 0.4rem; border-bottom: 1px solid var(--color-border); color: var(--color-secondary); }
#calculation-formula-breakdown { white-space: pre-line; }
.planning-note { font-size: 0.82rem; color: var(--color-text-muted); margin: 0 0 1.25rem; padding: 0.75rem 1rem; background: var(--color-bg-base); border-radius: var(--radius-md); border-left: 3px solid var(--color-primary); }
.ref-table-wrap { overflow-x: auto; margin-top: 0.75rem; }