:root {
  --evo-bg: #0b0f10;
  --evo-panel: #121819;
  --evo-panel-raised: #192120;
  --evo-line: #334139;
  --evo-muted: #9ba8a1;
  --evo-green: #9fce61;
  --evo-gold: #e4b636;
  --evo-ink: #edf2e8;
}

.evolution-page { min-width: 0; display: grid; gap: 28px; }
.evolution-page > *, .evolution-intro > div, .guide-controls > *, .guide-tools > * { min-width: 0; }
.evolution-intro { display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.evolution-intro h1 { margin: 0; font-size: clamp(38px, 6vw, 70px); line-height: .92; letter-spacing: -.065em; }
.evolution-intro p { max-width: 720px; margin: 20px 0 0; color: #bbc6bf; font: 17px/1.65 system-ui, sans-serif; }
.guide-source { flex: 0 0 235px; padding: 15px 0 15px 18px; border-left: 2px solid var(--evo-green); }
.guide-source strong, .guide-source span { display: block; }
.guide-source strong { color: var(--evo-green); font-size: 13px; }
.guide-source span { margin-top: 7px; color: var(--evo-muted); font: 13px/1.45 system-ui, sans-serif; }

.guide-controls { position: sticky; top: 72px; z-index: 8; display: flex; align-items: end; justify-content: space-between; gap: 22px; padding: 16px; border: 1px solid var(--evo-line); border-radius: 10px; background: rgba(13, 18, 19, .94); box-shadow: 0 12px 32px #0007; backdrop-filter: blur(14px); }
.version-picker { display: flex; flex-wrap: wrap; gap: 7px; }
.version-tab { min-width: 67px; padding: 10px 12px; border: 1px solid #405047; border-radius: 6px; background: transparent; color: #c9d2cc; font: 800 13px ui-monospace, monospace; cursor: pointer; }
.version-tab:hover { border-color: var(--evo-green); color: var(--evo-green); }
.version-tab[aria-selected="true"] { border-color: var(--evo-green); background: var(--evo-green); color: #12210d; }
.guide-tools { display: flex; align-items: end; gap: 18px; }
.guide-search span { display: block; margin-bottom: 6px; color: var(--evo-muted); font-size: 11px; }
.guide-search input { width: 190px; padding: 10px 12px; border: 1px solid #405047; border-radius: 6px; background: #090d0e; color: var(--evo-ink); font: 13px ui-monospace, monospace; }
.guide-search input:focus-visible, .version-tab:focus-visible, .species-card:focus-visible, .dialog-close:focus-visible, .chart-scroll:focus-visible { outline: 3px solid var(--evo-gold); outline-offset: 3px; }
.requirements-toggle { display: flex; align-items: center; gap: 8px; padding: 10px 0; color: #c9d2cc; font-size: 12px; white-space: nowrap; }
.requirements-toggle input { width: 16px; height: 16px; accent-color: var(--evo-green); }

.guide-status { min-height: 24px; color: var(--evo-muted); font: 13px/1.5 system-ui, sans-serif; }
.guide-status strong { color: var(--evo-ink); }
.chart-frame { overflow: hidden; border: 1px solid var(--evo-line); border-radius: 14px; background: linear-gradient(180deg, #131a1a, #0d1213); box-shadow: 0 24px 70px #0005; }
.chart-scroll { overflow-x: hidden; scrollbar-color: #4b5b52 #0c1011; }
.evolution-chart { --stage-count: 6; position: relative; min-width: 0; padding: 0 28px 42px; isolation: isolate; }
.route-lines { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.route-line { fill: none; stroke: var(--route-color, #52635a); stroke-width: 2; opacity: .72; transition: opacity 160ms ease, stroke-width 160ms ease; }
.route-line.is-connected { stroke-width: 3.5; opacity: 1; }
.route-line.is-dimmed { opacity: .08; }
.stage-column { min-width: 0; display: flex; flex-wrap: wrap; justify-content: center; align-items: flex-start; gap: 20px; padding-bottom: 104px; }
.stage-column:last-of-type { padding-bottom: 0; }
.stage-heading { position: relative; z-index: 4; flex: 0 0 100%; margin: 0 0 4px; padding: 17px 14px 13px; border-bottom: 1px solid var(--evo-line); background: rgba(18, 24, 25, .96); color: var(--evo-green); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.species-node { position: relative; flex: 0 1 250px; width: 100%; margin: 0; transition: opacity 160ms ease; }
.species-node.is-dimmed { opacity: .2; }
.species-node.is-search-miss { display: none; }
.species-card { position: relative; width: 100%; min-height: 102px; display: grid; grid-template-columns: 66px 1fr; align-items: center; gap: 12px; padding: 13px; border: 1px solid #3c4943; border-radius: 9px; background: linear-gradient(145deg, #1b2422, #121819); color: var(--evo-ink); text-align: left; cursor: pointer; box-shadow: 0 10px 20px #0003; transition: transform 160ms ease, border-color 160ms ease, background 160ms ease; }
.species-card:hover { transform: translateY(-2px); border-color: #74877c; background: linear-gradient(145deg, #202b27, #151c1c); }
.species-card.is-selected { border-color: var(--evo-gold); box-shadow: 0 0 0 1px var(--evo-gold), 0 12px 28px #0006; }
.species-sprite { width: 64px; height: 64px; background-repeat: no-repeat; background-position: 0 0; background-size: 1200% 100%; image-rendering: pixelated; }
.species-name { display: block; font-size: 13px; line-height: 1.35; }
.species-meta { display: block; margin-top: 7px; color: var(--evo-muted); font: 11px/1.35 system-ui, sans-serif; }
.route-count { display: inline-block; margin-top: 8px; color: var(--evo-green); font: 700 10px ui-monospace, monospace; }
.unreachable-mark { position: absolute; top: 8px; right: 8px; width: 7px; height: 7px; border-radius: 50%; background: #f38a77; box-shadow: 0 0 0 3px #f38a7720; }
.outgoing-routes { display: grid; gap: 7px; margin: 9px 4px 0; }
.route-summary { padding: 8px 9px; border-left: 2px solid #46564d; background: #0c1111; color: #aeb9b2; font: 10px/1.45 system-ui, sans-serif; }
.route-summary strong { color: #dce5dd; font-weight: 700; }
.route-summary .fallback { color: var(--evo-gold); }
.evolution-chart.hide-requirements .outgoing-routes { display: none; }
.chart-hint { margin: 0; padding: 12px 18px; border-top: 1px solid var(--evo-line); color: #7f8c85; font: 11px/1.5 system-ui, sans-serif; }

.guide-notes { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--evo-line); border-bottom: 1px solid var(--evo-line); }
.guide-notes div { padding: 19px 24px; }
.guide-notes div + div { border-left: 1px solid var(--evo-line); }
.guide-notes strong, .guide-notes span { display: block; }
.guide-notes strong { color: var(--evo-green); font-size: 12px; }
.guide-notes span { margin-top: 8px; color: var(--evo-muted); font: 12px/1.5 system-ui, sans-serif; }
.species-node.is-linked-result .species-card { border-color: #8f7432; box-shadow: inset 0 0 0 1px rgba(223, 177, 73, .12); }
.species-node.is-linked-result .route-count { color: var(--evo-gold); }

.species-dialog { width: min(560px, calc(100% - 28px)); max-height: calc(100vh - 40px); overflow: auto; padding: 0; border: 1px solid #4b5b52; border-radius: 14px; background: #121819; color: var(--evo-ink); box-shadow: 0 30px 100px #000c; }
.species-dialog::backdrop { background: #050707c9; backdrop-filter: blur(6px); }
.dialog-close { position: sticky; top: 14px; z-index: 2; float: right; width: 38px; height: 38px; margin: 14px 14px 0 0; display: grid; place-items: center; border: 1px solid #425047; border-radius: 50%; background: #0b0f10; color: #d9e1da; cursor: pointer; }
.dialog-close svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.species-detail { padding: 34px; }
.detail-identity { display: flex; align-items: center; gap: 22px; margin: 8px 48px 26px 0; }
.detail-identity .species-sprite { flex: 0 0 96px; width: 96px; height: 96px; }
.detail-identity h2 { margin: 0; font-size: 29px; letter-spacing: -.04em; }
.detail-identity p { margin: 8px 0 0; color: var(--evo-muted); font: 13px/1.5 system-ui, sans-serif; }
.detail-time { display: grid; grid-template-columns: 1fr auto; gap: 14px; padding: 14px 0; border-top: 1px solid var(--evo-line); border-bottom: 1px solid var(--evo-line); font-size: 12px; }
.detail-time span { color: var(--evo-muted); }
.detail-routes { margin-top: 26px; }
.detail-routes h3 { margin: 0 0 12px; color: var(--evo-green); font-size: 13px; }
.detail-route { padding: 14px 0; border-top: 1px solid #29342f; }
.detail-route:first-of-type { border-top: 0; }
.detail-route strong { display: block; font-size: 13px; }
.detail-route p { margin: 8px 0 0; color: #aeb9b2; font: 12px/1.55 system-ui, sans-serif; }
.detail-empty { color: var(--evo-muted); font: 13px/1.6 system-ui, sans-serif; }

@media (max-width: 900px) {
  .evolution-intro { align-items: start; flex-direction: column; gap: 24px; }
  .guide-source { flex-basis: auto; }
  .guide-controls { top: 116px; align-items: stretch; flex-direction: column; }
  .guide-tools { justify-content: space-between; }
  .guide-search { flex: 1; }
  .guide-search input { width: 100%; }
  .guide-notes { grid-template-columns: 1fr; }
  .guide-notes div + div { border-left: 0; border-top: 1px solid var(--evo-line); }
}

@media (max-width: 620px) {
  .evolution-page { gap: 20px; }
  .evolution-intro h1 { font-size: 40px; }
  .evolution-intro p { font-size: 15px; }
  .guide-controls { position: static; padding: 12px; }
  .version-picker { flex-wrap: nowrap; overflow-x: auto; }
  .version-tab { flex: 1 0 62px; }
  .guide-tools { align-items: stretch; flex-direction: column; gap: 8px; }
  .requirements-toggle { padding-bottom: 2px; }
  .evolution-chart { padding: 0 14px 30px; }
  .stage-column { gap: 14px; padding-bottom: 82px; }
  .species-node { flex-basis: 100%; }
  .species-card { min-height: 88px; grid-template-columns: 54px 1fr; padding: 10px; }
  .species-sprite { width: 52px; height: 52px; }
  .route-summary { font-size: 9px; }
  .species-detail { padding: 24px; }
  .detail-identity { gap: 15px; }
  .detail-identity .species-sprite { flex-basis: 72px; width: 72px; height: 72px; }
  .detail-identity h2 { font-size: 23px; }
}

@media (prefers-reduced-motion: reduce) {
  .species-card, .route-line, .species-node { transition: none; }
}