/* Conceptual bridge: no intermediate product steps or hidden feature copy. */
.why-page .concept-bridge { position: relative; isolation: isolate; margin-top: 2rem; padding: 0.5rem 0; }
.why-page .concept-endpoint { position: relative; width: min(100%, 32rem); padding: 1.5rem; border: 1px solid #88a18a70; border-radius: 12px; background: #1c3627; z-index: 2; }
.why-page .concept-endpoint:last-of-type { margin-left: auto; }
.why-page .concept-kicker { display: flex; align-items: center; gap: 0.8rem; color: #DFC484; font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; }
.why-page .concept-anchor { display: inline-block; flex: 0 0 48px; width: 48px; height: 48px; }
.why-page .concept-endpoint h3 { margin-top: 0.8rem; font-size: clamp(1.5rem, 3vw, 1.9rem); font-weight: 500; line-height: 1.3; color: #FAF7F0; }
.why-page .concept-endpoint p:not(.concept-kicker) { margin-top: 0.6rem; color: #e0e5df; font-size: 1rem; line-height: 1.7; }
.why-page .concept-endpoint-end .concept-kicker { justify-content: space-between; }
.why-page .concept-mist { position: relative; height: clamp(10rem, 20vw, 14rem); margin: -0.3rem 0; overflow: hidden; }
.why-page .concept-mist::before { content: ''; position: absolute; inset: 0 12%; background: radial-gradient(ellipse at 35% 25%, #DFC48422, transparent 55%), radial-gradient(ellipse at 65% 75%, #88a18a32, transparent 58%); filter: blur(14px); }
.why-page .concept-trail { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; z-index: 1; }
.why-page .concept-trail path { fill: none; stroke: #DFC484; stroke-opacity: 0.65; stroke-width: 1.5; stroke-dasharray: 1 7; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.why-page .concept-caption { margin: 1rem 0 0; color: #DFC484; text-align: center; font-family: "Nunito", sans-serif; font-weight: 200; font-size: 1.2rem; line-height: 1.5; }
.why-page .concept-fly { position: absolute; top: 0; left: 0; width: 46px; height: 46px; z-index: 3; pointer-events: none; filter: drop-shadow(0 0 6px color-mix(in srgb, var(--gold) 80%, transparent)); }
.why-page .concept-fly[hidden] { display: none; }
.why-page .concept-fly svg { display: block; width: 100%; height: 100%; overflow: visible; }
.why-page .concept-fly .fly-glow { transform-box: view-box; transform-origin: 16px 21px; animation: fly-pulse 2.4s ease-in-out infinite; animation-play-state: paused; }
.why-page .concept-fly .fly-wing { transform-box: view-box; animation: fly-flap 0.16s ease-in-out infinite alternate; animation-play-state: paused; }
.why-page .concept-fly .fly-wing-l { transform-origin: 15px 13px; }
.why-page .concept-fly .fly-wing-r { transform-origin: 17px 13px; }
.why-page .concept-fly.is-flying .fly-glow, .why-page .concept-fly.is-flying .fly-wing { animation-play-state: running; }
.why-page .concept-controls { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem; margin-top: 1.1rem; }
.why-page .concept-controls button { min-height: 44px; padding: 0.65rem 1rem; border: 1px solid #DFC48466; border-radius: 6px; color: #DFC484; background: #142319; cursor: pointer; font: 500 0.85rem "Plus Jakarta Sans", sans-serif; }
.why-page .concept-controls button:hover { background: #1c3627; }
.why-page .concept-controls button:focus-visible, .why-page .concept-evidence:focus-visible { outline: 2px solid #DFC484; outline-offset: 4px; }
.why-page .concept-controls[hidden], .why-page .concept-controls button[hidden] { display: none; }
.why-page .concept-note { margin-top: 1rem; text-align: center; color: #e0e5df; font-size: 0.85rem; line-height: 1.7; }
.why-page .concept-evidence { display: inline-block; margin-top: 1rem; color: #DFC484; font-size: 0.9rem; text-decoration: underline; text-underline-offset: 4px; }
.why-page .door-research-note { font-style: italic; }
@media (max-width: 680px) {
  .why-page .concept-endpoint { padding: 1.15rem; }
  .why-page .concept-kicker { letter-spacing: 0.08em; font-size: 0.7rem; }
  .why-page .concept-mist { height: 11rem; }
  .why-page .concept-endpoint h3 { font-size: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .why-page .concept-fly { filter: none; }
  .why-page .concept-fly .fly-glow, .why-page .concept-fly .fly-wing { animation: none; }
}