:root {
  --ink: #1f2933;
  --muted: #5b6773;
  --line: #d8dfdc;
  --blue: #26739b;
  --teal: #13856f;
  --green: #6b8f24;
  --amber: #c68519;
  --coral: #c8523f;
  --slate: #53606c;
  --paper: #fbfcf8;
}

body {
  color: var(--ink);
  background: var(--paper);
}

.navbar {
  border-bottom: 1px solid var(--line);
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  background: #ffffff;
  margin-bottom: 1.2rem;
}

.stage-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr;
  gap: 0.65rem;
  align-items: stretch;
  margin: 1rem 0 2rem;
}

.stage-card,
.alt-card,
.evidence-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  background: #fff;
}

.stage-card p,
.alt-card p,
.evidence-card p {
  margin-bottom: 0;
}

.stage-card.physical {
  border-color: var(--blue);
  background: #e8f2f7;
}

.stage-card.prey {
  border-color: var(--green);
  background: #ecf5eb;
}

.stage-card.condition {
  border-color: var(--amber);
  background: #fff3df;
}

.stage-card.predation {
  border-color: var(--coral);
  background: #fdf2e8;
}

.stage-card.survival {
  border-color: var(--teal);
  background: #e8f6f2;
}

.arrow-card {
  display: grid;
  place-items: center;
  color: var(--slate);
  font-size: 1.6rem;
}

.alt-grid,
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.evidence-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.bar {
  height: 8px;
  border-radius: 99px;
  background: #edf0ee;
  overflow: hidden;
  margin: 0.5rem 0 0.8rem;
}

.bar::before {
  content: "";
  display: block;
  height: 100%;
  border-radius: 99px;
}

.bar.energy::before {
  width: 92%;
  background: var(--teal);
}

.bar.pred::before {
  width: 84%;
  background: var(--coral);
}

.bar.transport::before {
  width: 64%;
  background: var(--blue);
}

.bar.cold::before {
  width: 38%;
  background: var(--slate);
}

.dag-panel {
  margin: 1.25rem 0 1.75rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow-x: auto;
}

.dag-panel .cell {
  margin-bottom: 0;
}

.dag-panel .mermaid {
  min-width: 720px;
  display: flex;
  justify-content: center;
}

.dag-panel .mermaid svg {
  max-width: none !important;
  width: 100%;
  min-height: 620px;
}

.dag-panel .mermaid .nodeLabel,
.dag-panel .mermaid text {
  font-size: 18px !important;
  line-height: 1.25;
  font-weight: 650;
}

.dag-panel .mermaid .edgeLabel,
.dag-panel .mermaid .edgeLabel span {
  font-size: 15px !important;
  color: var(--muted) !important;
}

.dag-panel .mermaid .node rect,
.dag-panel .mermaid .node polygon,
.dag-panel .mermaid .node ellipse {
  stroke-width: 2.4px !important;
  filter: drop-shadow(0 2px 4px rgba(31, 41, 51, 0.12));
}

.dag-panel .mermaid .edgePath .path {
  stroke-width: 2.1px !important;
}

.overview-dag .mermaid {
  min-width: 900px;
}

.overview-dag .mermaid svg {
  min-height: 960px;
}

.public-hero {
  padding: 1.6rem 1.8rem;
  border: 1px solid var(--line);
  border-left: 8px solid var(--teal);
  border-radius: 8px;
  background: #ffffff;
  margin-bottom: 1rem;
}

.public-hero h2 {
  margin-top: 0;
}

.public-hero p {
  max-width: 760px;
  font-size: 1.1rem;
  margin-bottom: 0;
}

.big-message {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  margin: 1rem 0 2rem;
}

.message-piece {
  min-height: 130px;
  display: grid;
  place-items: center;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 1.15rem;
}

.message-piece strong {
  display: block;
  font-size: clamp(2.1rem, 5vw, 4.4rem);
  line-height: 1;
  color: var(--ink);
}

.message-piece.many {
  border-color: var(--blue);
  background: #e8f2f7;
}

.message-piece.few {
  border-color: var(--teal);
  background: #e8f6f2;
}

.message-arrow {
  width: 5.5rem;
  height: 5.5rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--slate);
  font-size: 2rem;
  font-weight: 800;
}

.message-caption {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  font-weight: 650;
}

.public-flow {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: stretch;
  margin: 1rem 0 2rem;
}

.public-step {
  position: relative;
  min-height: 190px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  background: #fff;
}

.public-step h3 {
  margin-top: 2.2rem;
  font-size: 1.05rem;
}

.public-step p {
  margin-bottom: 0;
}

.step-num {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-weight: 700;
  color: #fff;
  background: var(--slate);
}

.public-step.spawn {
  border-color: var(--blue);
  background: #e8f2f7;
}

.public-step.drift {
  border-color: var(--slate);
  background: #eef1f2;
}

.public-step.food {
  border-color: var(--green);
  background: #ecf5eb;
}

.public-step.winter {
  border-color: var(--amber);
  background: #fff3df;
}

.public-step.predators {
  border-color: var(--coral);
  background: #fdf2e8;
}

.public-step.recruits {
  border-color: var(--teal);
  background: #e8f6f2;
}

.public-arrow {
  display: none;
}

.public-story {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
  margin: 1rem 0 2.25rem;
  padding: 1rem;
}

.public-story::before {
  content: "";
  position: absolute;
  inset: 28px 2rem 28px 2rem;
  border: 6px solid rgba(19, 133, 111, 0.18);
  border-left: 0;
  border-radius: 0 999px 999px 0;
  pointer-events: none;
}

.story-node {
  position: relative;
  min-height: 158px;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 1.05rem 1.05rem 1.05rem 4.1rem;
  background: #fff;
  box-shadow: 0 8px 22px rgba(31, 41, 51, 0.08);
}

.story-node p {
  margin-bottom: 0;
}

.story-node .step-num {
  top: 1rem;
  left: 1rem;
}

.story-node.spawn {
  border-color: var(--blue);
  background: #e8f2f7;
}

.story-node.drift {
  border-color: var(--slate);
  background: #eef1f2;
}

.story-node.food {
  border-color: var(--green);
  background: #ecf5eb;
}

.story-node.winter {
  border-color: var(--amber);
  background: #fff3df;
}

.story-node.predators {
  border-color: var(--coral);
  background: #fdf2e8;
}

.story-node.recruits {
  border-color: var(--teal);
  background: #e8f6f2;
}

.bottleneck-grid,
.driver-board,
.knowledge-grid {
  display: grid;
  gap: 1rem;
  margin: 1rem 0 2rem;
}

.bottleneck-grid,
.knowledge-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.driver-board {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.bottleneck-card,
.driver-card,
.knowledge-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  background: #fff;
}

.bottleneck-card,
.knowledge-card {
  display: inline-block;
  width: calc(50% - 0.65rem);
  vertical-align: top;
  margin: 0.35rem 0.55rem 1rem 0;
}

.driver-card {
  display: inline-block;
  width: calc(25% - 0.8rem);
  min-height: 160px;
  vertical-align: top;
  margin: 0.35rem 0.55rem 1rem 0;
}

.bottleneck-card h3,
.driver-card h3,
.knowledge-card h3 {
  margin-top: 0;
}

.food-gate {
  border-color: var(--green);
  background:
    linear-gradient(135deg, rgba(107, 143, 36, 0.1), transparent 42%),
    #fff;
}

.pred-gate {
  border-color: var(--coral);
  background:
    linear-gradient(135deg, rgba(200, 82, 63, 0.1), transparent 42%),
    #fff;
}

.fuel-meter {
  position: relative;
  display: block;
  height: 28px;
  border-radius: 99px;
  background: #e7ece9;
  margin: 1.1rem 0 1.2rem;
  overflow: hidden;
  border: 1px solid rgba(31, 41, 51, 0.14);
}

.fuel-meter::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 78%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--green), var(--teal));
}

.fuel-meter::after {
  content: "energy stores";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.overlap-meter {
  position: relative;
  display: block;
  height: 132px;
  margin: 0.75rem 0 1.1rem;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(19, 133, 111, 0.08), rgba(200, 82, 63, 0.08)),
    #fff;
  border: 1px solid rgba(31, 41, 51, 0.1);
}

.overlap-meter::before,
.overlap-meter::after {
  position: absolute;
  top: 20px;
  width: 94px;
  height: 94px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.1;
}

.overlap-meter::before {
  content: "young pollock";
  left: calc(50% - 104px);
  color: var(--ink);
  background: rgba(19, 133, 111, 0.22);
  border: 2px solid var(--teal);
}

.overlap-meter::after {
  content: "predators";
  left: calc(50% - 10px);
  color: var(--ink);
  background: rgba(200, 82, 63, 0.22);
  border: 2px solid var(--coral);
}

.driver-card.ice {
  border-color: var(--blue);
}

.driver-card.wind {
  border-color: var(--slate);
}

.driver-card.temp {
  border-color: var(--amber);
}

.driver-card.space {
  border-color: var(--teal);
}

.knowledge-card.available {
  border-color: var(--blue);
}

.knowledge-card.needed {
  border-color: var(--amber);
}

.takeaway-band {
  border: 1px solid var(--teal);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  background: #e8f6f2;
  font-size: 1.08rem;
}

.takeaway-band p {
  margin-bottom: 0;
}

table {
  background: #fff;
}

@media (max-width: 950px) {
  .stage-strip {
    grid-template-columns: 1fr;
  }

  .arrow-card {
    transform: rotate(90deg);
  }

  .alt-grid,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  .dag-panel {
    padding: 0.65rem;
  }

  .dag-panel .mermaid {
    min-width: 760px;
  }

  .overview-dag .mermaid {
    min-width: 920px;
  }

  .public-flow,
  .public-story,
  .bottleneck-grid,
  .driver-board,
  .knowledge-grid {
    grid-template-columns: 1fr;
  }

  .big-message {
    grid-template-columns: 1fr;
  }

  .message-arrow {
    justify-self: center;
    transform: rotate(90deg);
  }

  .public-story::before {
    inset: 1rem 50% 1rem auto;
    width: 0;
    border: 0;
    border-left: 6px solid rgba(19, 133, 111, 0.18);
    border-radius: 0;
  }

  .public-step {
    min-height: 0;
  }

  .bottleneck-card,
  .driver-card,
  .knowledge-card {
    display: block;
    width: 100%;
    margin-right: 0;
  }
}