/* Study diagrams: native text, fixed portfolio palette, independent of page columns. */
.study-diagram {
  --rl-ink: #242424;
  --rl-field: #cdcdca;
  --rl-node: #e3e3df;
  --rl-line: #646462;
  --rl-accent: #ab1530;
  container-name: study-diagram;
  container-type: inline-size;
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: clamp(12px, 2.2vw, 24px);
  background: var(--rl-field);
  color: var(--rl-ink);
  color-scheme: light;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.5;
  overflow-wrap: anywhere;
  align-self: start;
}
.study-diagram * { box-sizing: border-box; color: inherit; }
.study-diagram .rl-figure-label {
  margin: 0 0 22px;
  font-size: 13px;
  letter-spacing: .065em;
}
.study-diagram .rl-node {
  min-width: 0;
  padding: 14px 16px;
  background: var(--rl-node);
  color: var(--rl-ink);
}
.study-diagram .rl-node strong {
  display: block;
  font-size: 16px;
  line-height: 1.3;
  font-weight: 700;
}
.study-diagram .rl-node p { margin: 5px 0 0; font-size: 14px; }
.study-diagram .rl-node .rl-overline {
  display: block;
  margin-bottom: 5px;
  color: var(--rl-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .055em;
}
.study-diagram .rl-core { border-left: 4px solid var(--rl-accent); }
.study-diagram .rl-grid { display: grid; gap: 12px; align-items: stretch; }
.study-diagram .rl-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.study-diagram .rl-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.study-diagram .rl-grid > * { min-width: 0; }
.study-diagram .rl-down {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  color: var(--rl-accent);
  font-size: 23px;
  line-height: 1;
}
.study-diagram .rl-down::before { content: "↓"; }
.study-diagram .rl-join { position: relative; padding-top: 20px; margin-top: 8px; }
.study-diagram .rl-join::before {
  content: "";
  position: absolute;
  top: 0;
  left: 5%;
  right: 5%;
  height: 10px;
  border: 1px solid var(--rl-line);
  border-top: 0;
}
.study-diagram .rl-join::after {
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  height: 10px;
  border-left: 1px solid var(--rl-line);
}
.study-diagram .rl-result {
  margin-top: 22px;
  padding: 17px 18px;
  border-top: 3px solid var(--rl-accent);
  background: #363634;
  color: #f1f1ed;
}
.study-diagram .rl-result > span {
  display: block;
  margin-bottom: 5px;
  font-size: 12px;
  letter-spacing: .07em;
}
.study-diagram .rl-result strong {
  display: block;
  font-size: 18px;
  line-height: 1.3;
  font-weight: 700;
}
.study-diagram .rl-result p { margin: 6px 0 0; font-size: 14px; }
.study-diagram .rl-section-label { margin: 0 0 9px; font-size: 13px; font-weight: 700; }
.study-diagram .rl-base {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--rl-line);
  font-size: 13px;
}
.study-diagram .rl-relation {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 7px;
}
.study-diagram .rl-relation .rl-node {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 12px 8px;
  text-align: center;
}
.study-diagram .rl-relation > .rl-between {
  align-self: center;
  color: var(--rl-accent);
  font-size: 21px;
}
.study-diagram .rl-centered { text-align: center; }
.study-diagram .rl-relation .rl-center-node { background: var(--rl-accent); color: #fff; }
.study-diagram .rl-motives {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 16px;
  background: var(--rl-node);
  color: var(--rl-ink);
}
.study-diagram .rl-motives strong { flex: 1 1 100%; font-size: 16px; }
.study-diagram .rl-motives span {
  padding: 3px 7px;
  border-bottom: 2px solid var(--rl-accent);
  font-size: 14px;
}
.study-diagram .rl-csd {
  padding: 7px 12px;
  background: var(--rl-accent);
  color: #fff;
  font-size: 13px;
  text-align: center;
}
.study-diagram .rl-actions { display: flex; flex-wrap: wrap; gap: 12px; padding: 12px 0 0; }
.study-diagram .rl-actions div {
  flex: 1 1 105px;
  padding: 10px 12px;
  background: var(--rl-node);
  color: var(--rl-ink);
  text-align: center;
  font-weight: 700;
}
.study-diagram .rl-mini-route {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 10px;
  font-size: 14px;
}
.study-diagram .rl-mini-route b { color: #c3c3bd; font-weight: 400; }
.study-diagram .rl-loop { display: grid; grid-template-columns: minmax(0, 1fr) 26px; }
.study-diagram .rl-loop-track {
  position: relative;
  margin: 34px 0 34px 10px;
  border: 1px solid var(--rl-accent);
  border-left: 0;
}
.study-diagram .rl-loop-track::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 1px;
  width: 7px;
  height: 7px;
  transform: rotate(45deg);
  border-left: 1px solid var(--rl-accent);
  border-bottom: 1px solid var(--rl-accent);
}
.study-diagram .rl-loop-label {
  padding: 5px 0 9px;
  color: var(--rl-accent);
  font-size: 12px;
  text-align: right;
}
.study-diagram .rl-requirements {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  background: var(--rl-node);
  color: var(--rl-ink);
  font-size: 13px;
}
.study-diagram .rl-requirements th,
.study-diagram .rl-requirements td {
  padding: 10px 12px;
  border-bottom: 1px solid #a4a4a0;
  text-align: left;
  vertical-align: top;
}
.study-diagram .rl-requirements th { width: 37%; font-weight: 700; }
.study-diagram .rl-next-label {
  display: block;
  padding: 0 0 5px;
  color: var(--rl-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}
.study-diagram .rl-contrast {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 9px;
  padding: 14px 16px;
  background: #363634;
  color: #f1f1ed;
}
.study-diagram .rl-contrast strong { font-size: 16px; line-height: 1.3; }
.study-diagram .rl-contrast > span { color: #c3c3bd; font-size: 21px; }
.study-diagram .rl-compare-caption {
  margin: 0;
  padding: 0 16px 14px;
  background: #363634;
  color: #f1f1ed;
  font-size: 13px;
}
.study-diagram .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
@container study-diagram (max-width: 560px) {
  .study-diagram .rl-grid-3,
  .study-diagram .rl-grid-2 { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .study-diagram .rl-grid .rl-node { padding: 12px 14px; }
  .study-diagram .rl-relation { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .study-diagram .rl-relation .rl-node { padding: 12px; }
  .study-diagram .rl-relation > .rl-between { text-align: center; line-height: 1.1; transform: rotate(90deg); }
  .study-diagram .rl-contrast { grid-template-columns: minmax(0, 1fr); gap: 4px; text-align: center; }
  .study-diagram .rl-requirements th,
  .study-diagram .rl-requirements td { padding: 9px; }
}
/* Mobile fallback also covers browsers without container queries. */
@media (max-width: 560px) {
  .study-diagram .rl-grid-3,
  .study-diagram .rl-grid-2 { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .study-diagram .rl-grid .rl-node { padding: 12px 14px; }
  .study-diagram .rl-relation { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .study-diagram .rl-relation .rl-node { padding: 12px; }
  .study-diagram .rl-relation > .rl-between { text-align: center; line-height: 1.1; transform: rotate(90deg); }
  .study-diagram .rl-contrast { grid-template-columns: minmax(0, 1fr); gap: 4px; text-align: center; }
  .study-diagram .rl-requirements th,
  .study-diagram .rl-requirements td { padding: 9px; }
}