.mission-rail {
  position: relative;
  display: grid;
  gap: 12px;
  margin: 8px 0 28px;
  padding: clamp(14px, 3vw, 22px);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent 45%),
    var(--panel);
}

.mission-rail-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.mission-rail-head h2 {
  font-size: clamp(20px, 2.4vw, 27px);
}

.mission-status {
  color: var(--muted);
  font: 0.78rem var(--mono);
}

.mission-map {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mission-map::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 7%;
  right: 7%;
  height: 2px;
  background: var(--border-strong);
}

.mission-map li {
  position: relative;
  min-width: 0;
}

.mission-link {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 7px;
  min-height: 88px;
  padding: 0 5px 8px;
  color: var(--muted);
  text-align: center;
  text-decoration: none;
}

.mission-link:hover {
  color: var(--text);
  text-decoration: none;
}

.mission-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.mission-node {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 2px solid var(--border-strong);
  border-radius: 50%;
  background: var(--panel);
  color: var(--faint);
  font: 700 0.78rem var(--mono);
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}

.mission-link strong {
  color: inherit;
  font: 700 0.72rem/1.25 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.mission-link[data-state="visited"] .mission-node {
  border-color: color-mix(in srgb, var(--ok) 65%, transparent);
  color: var(--ok);
}

.mission-link[aria-current="step"] {
  color: var(--accent);
}

.mission-link[aria-current="step"] .mission-node {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent);
}

.mission-section {
  display: grid;
  gap: 14px;
  margin-top: 30px;
  scroll-margin-top: 20px;
}

.mission-heading {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  align-items: start;
  padding: 0 2px 10px;
  border-bottom: 1px solid var(--border-strong);
}

.mission-index {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--accent-border);
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font: 700 0.8rem var(--mono);
}

.mission-heading-copy {
  display: grid;
  gap: 5px;
}

.mission-heading-copy p {
  max-width: 760px;
}

.mission-stack {
  display: grid;
  gap: 14px;
}

.mission-stack > .band {
  margin-top: 0;
}

.loop-lab {
  display: grid;
  gap: 16px;
  margin-top: 14px;
  padding: clamp(14px, 3vw, 22px);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: linear-gradient(145deg, var(--panel), var(--panel-soft));
}

.loop-lab [hidden] {
  display: none;
}

.loop-lab.is-enhanced .loop-js-note {
  display: none;
}

.loop-predict-form,
.loop-predict-group {
  display: grid;
  gap: 10px;
}

.loop-predict-form {
  margin: 0;
}

.loop-predict-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.loop-predict-group {
  margin: 0;
  padding: 13px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: color-mix(in srgb, var(--bg) 50%, transparent);
}

.loop-predict-group legend {
  padding: 0 5px;
  color: var(--text);
  font-weight: 700;
}

.loop-choice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-height: 44px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
}

.loop-choice:hover {
  border-color: var(--border);
  background: var(--panel-soft);
}

.loop-choice input {
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  flex: 0 0 auto;
  accent-color: var(--accent);
}

.loop-predict-form .button {
  justify-self: start;
}

.loop-predict-form .button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.loop-lab :focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.loop-feedback {
  display: grid;
  gap: 5px;
  padding: 12px 14px;
  border-left: 4px solid var(--warn);
  background: var(--panel-soft);
}

.loop-feedback.is-correct {
  border-left-color: var(--ok);
}

.loop-feedback.is-incorrect {
  border-left-color: var(--verm);
}

.loop-feedback p {
  margin: 0;
}

.loop-verdict,
.loop-target {
  font-weight: 700;
}

.loop-reasoning {
  color: var(--muted);
}

.loop-run {
  display: grid;
  gap: 16px;
}

.loop-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(250px, 0.75fr);
  gap: 14px;
}

.loop-figure,
.loop-readout {
  border: 1px solid var(--border);
  border-radius: 3px;
  background: color-mix(in srgb, var(--bg) 66%, transparent);
}

.loop-figure {
  padding: 12px;
}

.loop-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.loop-wire,
.loop-load,
.loop-source,
.loop-switch-arm,
.loop-flow {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.loop-wire {
  stroke: var(--text);
  stroke-width: 4;
}

.loop-load {
  stroke: var(--accent);
  stroke-width: 5;
}

.loop-source {
  stroke: var(--warn);
  stroke-width: 5;
}

.loop-switch-arm {
  stroke: var(--text);
  stroke-width: 5;
  transform: rotate(-28deg);
  transform-origin: 230px 180px;
  transition: transform 220ms ease;
}

.loop-flow {
  opacity: 0;
  stroke: var(--accent);
  stroke-width: 5;
  stroke-dasharray: 3 24;
  stroke-dashoffset: 0;
}

.loop-lamp {
  fill: color-mix(in srgb, var(--panel) 75%, transparent);
  stroke: var(--accent);
  stroke-width: 4;
  transition: fill 220ms ease, filter 220ms ease;
}

.loop-lamp-filament {
  fill: none;
  stroke: var(--faint);
  stroke-width: 3;
  transition: stroke 220ms ease;
}

.loop-figure text {
  fill: var(--muted);
  font: 12px var(--mono);
}

.loop-lab.is-closed .loop-switch-arm {
  transform: rotate(0deg);
}

.loop-lab.is-closed .loop-flow {
  opacity: 1;
  animation: loop-current 1.05s linear infinite;
}

.loop-lab.is-closed .loop-lamp {
  fill: color-mix(in srgb, var(--accent) 58%, var(--panel));
  filter: drop-shadow(0 0 10px color-mix(in srgb, var(--accent) 65%, transparent));
}

.loop-lab.is-closed .loop-lamp-filament {
  stroke: var(--text);
}

.loop-readout {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 16px;
}

.loop-state-label {
  color: var(--muted);
  font: 0.78rem var(--mono);
  letter-spacing: 0.10em;
  text-transform: uppercase;
}

.loop-current {
  color: var(--accent);
  font: 700 clamp(1.8rem, 6vw, 2.8rem) var(--mono);
}

.loop-voltage {
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.loop-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.loop-table {
  width: 100%;
  margin-top: 10px;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.loop-table caption {
  padding-bottom: 8px;
  color: var(--muted);
  text-align: left;
}

.loop-table th,
.loop-table td {
  padding: 9px 10px;
  border: 1px solid var(--border);
  text-align: left;
}

.path-extension {
  margin-top: 26px;
}

.path-extension > summary {
  min-height: 44px;
  cursor: pointer;
  color: var(--text);
  font-weight: 700;
}

.later-preview {
  border-style: dashed;
}

@keyframes loop-current {
  to { stroke-dashoffset: -54; }
}

@media (max-width: 760px) {
  .mission-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mission-map::before {
    display: none;
  }

  .mission-link {
    grid-template-columns: 42px minmax(0, 1fr);
    justify-items: start;
    min-height: 58px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 3px;
    text-align: left;
  }

  .loop-predict-grid,
  .loop-stage {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 340px) {
  .mission-map {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mission-node,
  .loop-switch-arm,
  .loop-lamp,
  .loop-lamp-filament {
    transition: none !important;
  }

  .loop-lab.is-closed .loop-flow {
    animation: none !important;
  }
}