.guide-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.guide-heading p {
  font-size: 14px;
  margin-bottom: 0;
}

.guide-layout {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 50px;
}

.rules-selector {
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
  margin-bottom: 28px;
}

.rules-selector-heading {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 10px;
}

.rules-selector label {
  font-size: 13px;
  font-weight: 600;
}

.rules-selector select {
  width: 100%;
  max-width: 440px;
  min-width: 0;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--input-border);
  border-radius: 5px;
  font: inherit;
  font-size: 13px;
}

.rules-selector p {
  margin: 10px 0 0;
  font-size: 12px;
}

.rules-selector .footnote {
  color: var(--muted);
  font-size: 11px;
}

.guide-menu {
  position: sticky;
  top: 24px;
  height: auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 5px;
  font-size: 13px;
}

.guide-menu a {
  padding: 7px 0;
  color: var(--muted);
}

.guide-menu a:hover,
.guide-menu a:focus-visible {
  color: var(--blue);
}

.guide-content {
  min-width: 0;
  font-size: 14px;
  line-height: 1.85;
}

.guide-content section {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.guide-content section,
.reward-rules > div,
#rules-selector {
  scroll-margin-top: 24px;
}

.guide-content section:target h2,
.reward-rules > div:target dt {
  color: var(--blue);
}

.guide-content .section-heading {
  margin-bottom: 12px;
}

.guide-content a {
  color: var(--blue);
  text-underline-offset: 3px;
}

.guide-content a:hover {
  text-decoration: underline;
}

.reward-rules {
  margin: 20px 0 14px;
}

.reward-rules > div {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.reward-rules dt {
  display: flex;
  align-items: center;
  align-self: start;
  gap: 8px;
  font-weight: 600;
}

.reward-rules dd,
.plain-rules dd {
  margin: 0;
}

.reward-rules dd small {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
}

.guide-details {
  font-size: 13px;
  margin-top: 12px;
}

.guide-details summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--blue);
  list-style: none;
  padding: 4px 0;
}

.guide-details summary::-webkit-details-marker {
  display: none;
}

.guide-details[open] summary .inline-icon {
  transform: rotate(90deg);
}

.guide-details[open] summary {
  margin-bottom: 12px;
}

.guide-details p:last-child {
  margin-bottom: 0;
}

.guide-details ul,
.start-steps {
  padding-left: 20px;
}

.start-steps li {
  padding: 5px 0;
}

.champion-example,
.solve-key,
.solve-key span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.champion-example,
.solve-key {
  flex-wrap: wrap;
  gap: 20px;
  margin: 20px 0;
}

.champion-example .muted {
  font-size: 12px;
}

.plain-rules {
  margin: 16px 0;
}

.plain-rules > div {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 16px;
  padding: 8px 0;
}

.plain-rules dt {
  font-weight: 600;
}

.pareto-example {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 24px;
  margin: 24px 0;
}

.pareto-example figure {
  margin: 0;
}

.pareto-example svg {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
}

.pareto-example figcaption {
  margin-top: 8px;
  font-size: 11px;
  color: var(--muted);
}

@media (max-width: 760px) {
  .guide-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .guide-menu {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px 20px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 680px) {
  .guide-heading {
    margin-bottom: 24px;
  }

  .reward-rules > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .reward-rules dd {
    padding-left: 26px;
  }

  .pareto-example {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .plain-rules > div {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 12px;
  }
}

.rules-selector-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.rules-selector-controls button {
  flex-shrink: 0;
}