.page-kicker a {
  color: inherit;
}

/* Flow: five steps in a row, with Training feeding down into "predict" */
.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr) 40px) minmax(0, 1fr);
  grid-template-rows: auto 48px auto;
  align-items: center;
  margin-top: 36px;
}
.node-training {
  grid-area: 1 / 7;
}
.arrow-down {
  grid-area: 2 / 7;
}
.node-prompt {
  grid-area: 3 / 1;
}
.arrow-1 {
  grid-area: 3 / 2;
}
.node-tokens {
  grid-area: 3 / 3;
}
.arrow-2 {
  grid-area: 3 / 4;
}
.node-context {
  grid-area: 3 / 5;
}
.arrow-3 {
  grid-area: 3 / 6;
}
.node-predict {
  grid-area: 3 / 7;
}
.arrow-4 {
  grid-area: 3 / 8;
}
.node-answer {
  grid-area: 3 / 9;
}
.flow-node {
  height: 100%;
  min-height: 190px;
  padding: 18px 16px;
  border: 1.5px solid var(--ink);
  background: var(--surface);
  color: inherit;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}
.node-training {
  min-height: 0;
  border-style: dashed;
  background: transparent;
}
.flow-node:hover,
.flow-node:focus-visible,
.flow-node[aria-current="step"] {
  transform: translate(-3px, -3px);
  box-shadow: 5px 5px 0 var(--ink);
}
.flow-node[aria-current="step"] {
  background: var(--ink);
  color: var(--paper);
}
.node-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 8px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--paper);
  color: var(--ink);
}
[data-color="lime"] .node-icon {
  background: var(--lime);
}
[data-color="lav"] .node-icon {
  background: var(--lav);
}
[data-color="blue"] .node-icon {
  background: var(--blue);
}
[data-color="peach"] .node-icon {
  background: var(--peach);
}
.node-icon svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.node-kicker,
.node-term,
.panel-kicker {
  font: 500 11px var(--mono);
  letter-spacing: 0.1em;
}
.node-label {
  font: 600 22px/1 var(--serif);
  letter-spacing: -0.025em;
}
.node-term {
  margin-top: auto;
  padding-top: 8px;
  opacity: 0.7;
}
.flow-arrow {
  display: grid;
  place-items: center;
  color: var(--line-mid);
  transition: color 0.2s;
}
.flow-arrow svg {
  width: 36px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.arrow-down svg {
  transform: rotate(90deg);
}
/* The arrow leading into the current step lights up and "flows" */
.flow-arrow.lit {
  color: var(--lit);
}
.flow-arrow.lit .arrow-line {
  stroke-dasharray: 5 4;
  animation: flow 0.6s linear infinite;
}
@keyframes flow {
  to {
    stroke-dashoffset: -9;
  }
}

/* Detail panel */
.panels {
  margin-top: 32px;
  display: grid;
  gap: 16px;
}
.explain-panel {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  border: 1.5px solid var(--ink);
  background: var(--surface);
}
.explain-panel:focus {
  outline: none;
}
.explain-panel[hidden] {
  display: none;
}
.panel-main {
  padding: clamp(24px, 3.5vw, 40px);
}
.panel-main h3 {
  font: 600 clamp(28px, 3vw, 40px) / 1 var(--serif);
  letter-spacing: -0.03em;
  margin: 12px 0 16px;
}
.panel-main > p:not(.panel-kicker) {
  font-size: 17px;
  max-width: 620px;
}
.panel-like {
  padding: 14px 16px;
  background: var(--paper);
  border-left: 4px solid var(--coral);
}
.panel-term {
  padding: clamp(24px, 3.5vw, 40px);
  border-left: 1.5px solid var(--ink);
  background: var(--paper);
}
.explain-panel[data-color="lime"] .panel-term {
  background: var(--lime);
}
.explain-panel[data-color="lav"] .panel-term {
  background: var(--lav);
}
.explain-panel[data-color="blue"] .panel-term {
  background: var(--blue);
}
.explain-panel[data-color="peach"] .panel-term {
  background: var(--peach);
}
.term-name {
  font: 600 30px/1 var(--serif);
  letter-spacing: -0.03em;
  margin: 12px 0;
}
.panel-term p:last-child {
  font-size: 16px;
  margin: 0;
}
.token-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 20px 0 6px;
}
.token-demo span {
  padding: 6px 10px;
  border: 1.5px solid var(--ink);
  background: var(--lav);
  font: 500 15px var(--mono);
  white-space: pre;
}
.token-demo span:nth-child(even) {
  background: var(--blue);
}
.token-caption {
  font-size: 14px !important;
  opacity: 0.75;
}
.explain-controls {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}
.explain-controls .button:disabled {
  opacity: 0.35;
  cursor: default;
  transform: none;
  box-shadow: none;
}

/* Glossary */
.terms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
  align-items: start;
}
.term {
  border: 1.5px solid var(--ink);
  background: var(--surface);
}
.term summary {
  padding: 18px 20px;
  font: 600 21px/1.1 var(--serif);
  letter-spacing: -0.02em;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.term summary::-webkit-details-marker {
  display: none;
}
.term summary::after {
  content: "+";
  font: 500 20px var(--mono);
}
.term[open] summary {
  background: var(--lime);
  border-bottom: 1.5px solid var(--ink);
}
.term[open] summary::after {
  content: "−";
}
.term p {
  margin: 0;
  padding: 16px 20px 20px;
  font-size: 16px;
}
.explainer-next {
  margin-top: 48px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.explainer-next p {
  font: 600 24px var(--serif);
  letter-spacing: -0.02em;
  margin: 0;
}

/* Below ~1000px the row gets too tight: stack the steps top to bottom */
@media (max-width: 1000px) {
  .flow {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    max-width: 520px;
  }
  .flow > * {
    grid-area: auto;
  }
  .flow-node {
    min-height: 0;
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 16px;
    row-gap: 4px;
    align-items: center;
  }
  .node-icon {
    grid-row: span 3;
    margin: 0;
  }
  .node-term {
    margin: 0;
    padding: 0;
  }
  .flow-arrow {
    height: 40px;
  }
  .flow-arrow svg {
    transform: rotate(90deg);
  }
  .explain-panel {
    grid-template-columns: 1fr;
  }
  .panel-term {
    border-left: 0;
    border-top: 1.5px solid var(--ink);
  }
  .terms {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .terms {
    grid-template-columns: 1fr;
  }
}