/* Public impact and development sections: extend the established identity. */
.impact-intro { max-width: 70ch; }
.impact-tabs { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1.8rem 0 1rem; }
.impact-tabs[hidden], .impact-panel[hidden] { display: none; }
.impact-tab { appearance: none; min-height: 44px; padding: .65rem 1rem; border: 1px solid var(--line); border-radius: 999px; background: var(--white); color: var(--petrol); font: inherit; font-size: .9rem; font-weight: 700; cursor: pointer; }
.impact-tab:hover { border-color: var(--turq-ink); }
.impact-tab[aria-selected="true"] { background: var(--petrol); border-color: var(--petrol); color: var(--white); }
.impact-tab:focus-visible, .impact-panel:focus-visible { outline: 3px solid var(--turq-ink); outline-offset: 4px; }
.impact-panel { margin-top: 1rem; padding: clamp(1.2rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.impact-panel > p { margin-top: .65rem; color: var(--muted); max-width: 76ch; }
.impact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.1rem; margin-top: 1.5rem; }
.impact-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.impact-item { border-top: 3px solid var(--turq); padding-top: .85rem; }
.impact-item h4 { font-size: .98rem; }
.impact-item p { color: var(--muted); margin-top: .45rem; font-size: .92rem; }
.impact-panel .impact-scope { margin-top: 1.4rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .86rem; }
.cost-reference { display: grid; grid-template-columns: minmax(210px, .8fr) minmax(0, 1.6fr); gap: 1.7rem; margin-top: 1.5rem; padding: clamp(1.3rem, 3vw, 2rem); border: 1px solid var(--line); border-left: 5px solid var(--gold); border-radius: var(--radius); background: var(--tint); }
.cost-reference .cost-value { display: block; margin-top: .55rem; font-family: var(--serif); font-size: clamp(2.5rem, 4.5vw, 3.65rem); line-height: 1.1; color: var(--gold-ink); white-space: nowrap; }
.cost-reference .cost-unit { display: block; margin-top: .5rem; font-size: .85rem; font-weight: 650; color: var(--muted); }
.cost-reference h3 { margin-bottom: .6rem; }
.cost-reference p { margin-top: .65rem; color: var(--muted); font-size: .9rem; }
.cost-reference .cost-formula { color: var(--petrol); font-weight: 700; }
.cost-reference .source-links { display: flex; flex-wrap: wrap; gap: .5rem 1.1rem; margin-top: .9rem; font-size: .82rem; }
.source-links a { color: var(--turq-ink); text-underline-offset: 3px; }
.development-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.3rem; margin-top: 1.8rem; }
.development-card { padding: clamp(1.3rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.development-card h3 { margin-top: .9rem; font-size: 1.5rem; }
.development-card p { color: var(--muted); margin-top: .8rem; }
.development-status { display: inline-flex; align-items: center; gap: .55rem; padding: .4rem .7rem; border-radius: 999px; background: var(--tint); color: var(--turq-ink); font-size: .78rem; font-weight: 750; }
.development-status::before { content: ""; width: .55rem; height: .55rem; border-radius: 50%; background: var(--gold); flex: 0 0 auto; }
.development-note { margin-top: 1rem; }
.development-funding { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 1.5rem; align-items: center; margin-top: 1.8rem; padding: clamp(1.3rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: var(--radius); background: var(--ivory); }
.development-funding p { color: var(--muted); margin-top: .7rem; }
.development-funding .actions { margin-top: 0; }
.development-funding .button { text-align: left; }

/* The two new section links remain visible and usable on smaller screens. */
.navigation { gap: clamp(.7rem, 1.05vw, 1.2rem); }
@media (max-width: 1380px) {
  html { scroll-padding-top: 136px; }
  .header-inner { flex-wrap: wrap; padding-top: .55rem; }
  .navigation { order: 3; width: 100%; flex-wrap: wrap; gap: .15rem 1.25rem; overflow: visible; padding: .25rem 0 .55rem; }
  .navigation a { display: inline-flex; align-items: center; min-height: 36px; white-space: nowrap; }
}
@media (max-width: 860px) {
  .impact-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cost-reference, .development-funding { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  html { scroll-padding-top: 190px; }
  .navigation { gap: .05rem 1rem; }
  .navigation a { font-size: .8rem; }
  .impact-grid, .impact-grid.four, .development-grid { grid-template-columns: 1fr; }
  .impact-tabs { gap: .5rem; }
  .impact-tab { flex: 1 1 calc(50% - .5rem); }
  .cost-reference .cost-value { font-size: 2.7rem; }
}