.mode-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; margin-bottom: 0.85rem; }
.mode-tab { display: flex; align-items: center; justify-content: center; padding: 0.7rem 0.35rem; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); color: var(--color-text-muted); font-size: 0.78rem; font-weight: 600; cursor: pointer; transition: border-color .15s, background .15s; text-align: center; }
.mode-tab.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.mode-desc { font-size: 0.85rem; color: var(--color-text-muted); margin: 0 0 1.5rem; line-height: 1.45; }
.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); }
.amort-table tbody tr:hover { background: var(--color-bg-base); }
.amort-scroll { max-height: 460px; overflow-y: auto; }
.chart-legend { display: flex; gap: 1.25rem; flex-wrap: wrap; margin-top: 0.5rem; font-size: 0.8rem; color: var(--color-text-muted); }
.chart-legend .chart-swatch { display: inline-block; width: 12px; height: 3px; border-radius: 2px; margin-right: 0.35rem; vertical-align: middle; }
.gap-alternates div { padding: 0.35rem 0; font-size: 0.88rem; }
#calculation-formula-breakdown { white-space: pre-line; }
.calc-calc-btn { width: 100%; padding: 0.9rem; margin-top: 1.25rem; }
.verdict-on-track { color: #2d8a4e; }
.verdict-short { color: #c45c26; }
@media (max-width: 640px) { .mode-tabs { grid-template-columns: repeat(2, 1fr); } }