/* The wrapper is a layout, not prose: panels use the page width, running text keeps a readable measure. */
#power-article.field-prose {
  max-width: none;
}
.pg-section > :is(p, ul, ol, details):not(.pg-flow) {
  max-width: 78ch;
}
#power-article .pg-section > h2 {
  padding-top: 0;
  border-top: 0;
}
/* Reserve the permalink's slot, so a long heading never leaves the section sign alone on a line. */
#power-article :is(h2, h3):has(> .field-permalink) {
  position: relative;
  min-height: 44px;
  padding-right: 44px;
}
#power-article .field-permalink {
  position: absolute;
  top: 0;
  right: 0;
  margin: 0;
}
/* In-flow overview: a compact list that says what each section is for. */
.pg-nav ol {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: 0.25rem 2rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}
.pg-nav li {
  padding: 0.25rem 0;
}
.pg-nav a {
  display: inline-block;
  min-height: 24px;
  font-weight: 650;
  text-decoration: underline;
}
.pg-nav span {
  display: block;
  color: var(--muted);
  font-size: 0.95rem;
}
/* Controls by role: fields in a grid, peer choices side by side, actions in one wrapping row. */
.pg-controls {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
}
.pg-controls > label:has(input[type="checkbox"]) {
  align-self: end;
}
.pg-controls > .lesson-actions {
  grid-column: 1 / -1;
  margin: 0;
}
.pg-controls .lesson-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.pg-controls .lesson-toggles button {
  min-width: 3rem;
}
.pg-section button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
}
.pg-section button[aria-pressed="true"]::before {
  content: "✓ ";
}
.pg-section button:disabled {
  opacity: 0.6;
}
.pg-apply {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 1rem 0;
}
.pg-apply .run-summary {
  margin: 0;
}
/* The wake walkthrough compares lanes side by side: scroll it sideways only, never inside the page's scroll. */
#wake-fig .lesson-scroll {
  max-height: none;
}
.pg-badge-line {
  border-left: 3px solid var(--accent);
  padding-left: 0.75rem;
}
.pg-badge {
  display: inline-block;
  padding: 0.05rem 0.5rem;
  border: 1px solid currentColor;
  border-radius: 0.5rem;
  font-size: 0.9rem;
}
.pg-unavailable,
.pg-no,
.pg-unknown {
  border-style: dashed;
}
.pg-vf {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.pg-vf svg {
  flex: 1 1 15rem;
  max-width: 24rem;
  fill: none;
  stroke: var(--ink);
}
.pg-vf text {
  fill: var(--ink);
  stroke: none;
  font-size: 12px;
}
.pg-vf rect {
  fill: var(--accent);
  stroke: none;
}
.pg-vf circle {
  fill: var(--surface);
}
.pg-vf .pg-on circle {
  fill: var(--accent);
}
.pg-concl td,
.pg-concl th {
  font-weight: 700;
}
.pg-slots {
  display: flex;
  align-items: flex-end;
  gap: 0.35rem;
  height: 7rem;
  margin: 0.8rem 0;
}
.pg-slot {
  flex: 1;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: calc(var(--h) * 1% + 1.4rem);
  min-width: 0;
  border: 1px solid var(--line);
  border-bottom: 3px solid var(--accent);
  font-size: 0.8rem;
}
.pg-chain li {
  margin: 0.5rem 0;
}
.pg-atlas {
  list-style: none;
  padding: 0;
}
.pg-s0 {
  max-width: 40rem;
}
.pg-box {
  padding: 0.8rem;
  border: 2px solid var(--line);
  border-radius: 0.8rem;
}
.pg-box > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.pg-box > div span {
  flex: 1 1 8rem;
  padding: 0.4rem;
  border: 1px dashed var(--line);
}
.pg-sources {
  overflow-wrap: anywhere;
}
@media (prefers-reduced-motion: no-preference) {
  .pg-slot {
    transition: height 0.2s;
  }
}
.pg-section li,
.pg-section code,
.pg-section summary {
  overflow-wrap: anywhere;
}
/* Diagrams: site tokens only, so light and dark both read. */
.pg-diagram {
  margin: 1rem 0;
}
.pg-diagram svg {
  width: 100%;
  min-width: 411px;  /* 14px labels in 480 units: none under 12px; a phone scrolls the figure */
  max-width: 34rem;
  height: auto;
}
figure.pg-diagram {
  overflow-x: auto;
}
.pg-diagram text {
  fill: var(--ink);
  font-size: 14px;
}
.pg-diagram .pg-on-fill {
  fill: var(--ink);
  font-weight: 700;
}
.pg-area {
  fill: color-mix(in srgb, var(--accent) 28%, transparent);
  transform-box: fill-box;
  transform-origin: left;
}
.pg-line,
.pg-axis {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
}
.pg-axis {
  stroke: var(--line);
  stroke-width: 2;
}
.pg-flow,
.pg-scopes {
  display: grid;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}
.pg-flow {
  counter-reset: pg-step;
}
/* Five steps in one row when they fit, else one column: never a 4 + 1 orphan. */
@media (min-width: 60rem) {
  .pg-flow {
    grid-template-columns: repeat(5, 1fr);
  }
}
.pg-flow li,
.pg-scopes li {
  display: grid;
  gap: 0.15rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0.5rem;
  background: var(--bg);
}
.pg-flow li::before {
  counter-increment: pg-step;
  content: counter(pg-step);
  color: var(--accent);
  font-weight: 700;
}
.pg-flow span,
.pg-scopes span {
  color: var(--muted);
}
.pg-scopes li {
  grid-template-columns: 2rem 1fr;
  align-items: baseline;
}
.pg-scopes b {
  grid-row: span 2;
  color: var(--accent);
  font-size: 1.3rem;
}
.pg-flow code,
.pg-scopes code {
  overflow-wrap: anywhere;
}
/* Active step and last-changed figure keep a still mark, with or without motion. */
#wake-fig [aria-current="step"] {
  box-shadow: inset 0 -3px 0 var(--accent);
}
/* PC workbench: parts are buttons grouped by role; state is always words, never colour alone. */
#power-pc .pg-controls {
  margin-bottom: 1.25rem;
}
.pc-bench {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
  margin-top: 1.25rem;
}
.pc-map {
  display: grid;
  gap: 1rem;
}
.pc-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.pc-flow li {
  padding: 0.2rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: 0.5rem;
  font-size: 0.9rem;
}
.pc-flow li + li::before {
  content: "→ ";
}
.pc-changed {
  outline: 2px dashed var(--accent);
  outline-offset: 2px;
}
.pc-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 10rem), 1fr));
  gap: 0.5rem;
  padding: 0.75rem;
  border: 1px solid var(--line, currentColor);
  border-radius: 0.5rem;
}
.pc-group h4,
.pc-side h4 {
  margin: 0;
  font-size: 1rem;
}
.pc-group h4 {
  grid-column: 1 / -1;
  color: var(--muted);
  font-weight: 600;
}
.pc-part {
  display: grid;
  gap: 0.15rem;
  align-content: start;
  min-height: 44px;
  text-align: left;
}
.pc-part span {
  color: var(--muted);
  font-size: 0.9rem;
}
.pc-part[aria-pressed="true"]::before {
  content: none;
}
.pc-part[aria-pressed="true"] span {
  color: inherit;
}
.pc-part[aria-pressed="true"] {
  box-shadow: inset 0 -3px 0 var(--accent);
}
.pc-side {
  display: grid;
  gap: 0.6rem;
}
.pc-side p,
.pc-side ul {
  margin: 0;
}
.pc-bench > .lesson-scroll {
  grid-column: 1 / -1;
}
.pc-rules {
  padding-left: 1.1rem;
}
.pc-log {
  margin: 0;
  padding: 0.5rem 0.75rem 0.5rem 2.5rem;
}
.pc-log li {
  padding: 0.15rem 0.5rem;
}
.pc-log li[aria-current="step"] {
  font-weight: 650;
  box-shadow: inset 3px 0 0 var(--accent);
}
.pg-reference-only {
  border-style: dotted;
}
@media (max-width: 52rem) {
  .pc-bench {
    grid-template-columns: minmax(0, 1fr);
  }
}
#pc-status {
  padding-left: 0.75rem;
}
/* Mailbox lesson: client, registers, firmware. The acting box and the changed register keep still marks. */
.smu-diagram {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: 0.75rem;
  margin: 1rem 0 0.5rem;
}
.smu-box {
  padding: 0.75rem;
  border: 1px solid var(--line, currentColor);
  border-radius: 0.5rem;
}
.smu-box h4 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}
.smu-box p,
.smu-regs dl {
  margin: 0;
}
.smu-box[aria-current="step"] {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.smu-regs dt {
  color: var(--muted);
  font-size: 0.9rem;
}
.smu-regs dd {
  margin: 0 0 0.35rem;
  font-family: ui-monospace, monospace;
  font-weight: 650;
}
.smu-regs dd.smu-changed {
  outline: 2px dashed var(--accent);
  outline-offset: 2px;
}
.smu-what {
  max-width: 78ch;
}
.smu-steps li[aria-current="step"] {
  font-weight: 650;
}
.smu-result {
  padding: 0.5rem 0.75rem;
  border-left: 3px solid var(--accent);
}

.pc-pick select {
  max-width: 100%;
}

.pc-caps {
  margin: 0.5rem 0;
}

#pc-exp-choices button[aria-pressed="true"] {
  outline: 2px solid currentcolor;
  outline-offset: 2px;
}