.rail nav a[aria-current="page"] {
  border-color: var(--accent);
  color: var(--ink);
  background: rgba(124, 224, 208, 0.14);
}

.sim-hero {
  min-height: calc(92svh - 66px);
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 20px 34px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.7fr);
  align-items: end;
  gap: 28px;
}

.sim-hero-copy {
  padding: 40px 0 28px;
}

.sim-hero-copy h1 {
  max-width: 920px;
}

.sim-hero-copy p:not(.kicker) {
  max-width: 760px;
  color: var(--muted);
  font-size: 19px;
}

.sim-hero-board {
  min-height: 520px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 50% 46%, rgba(8, 125, 112, 0.18), transparent 34%),
    linear-gradient(160deg, rgba(169, 102, 18, 0.12), transparent 42%),
    #ffffff;
  box-shadow: var(--shadow);
}

.dose-orbit {
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(8, 125, 112, 0.28);
  border-radius: 50%;
  animation: slowSpin 22s linear infinite;
}

.dose-orbit::before,
.dose-orbit::after {
  content: "";
  position: absolute;
  inset: 18%;
  border: 1px solid rgba(169, 102, 18, 0.24);
  border-radius: 50%;
}

.dose-orbit::after {
  inset: 35%;
  border-color: rgba(107, 70, 193, 0.24);
}

.dose-orbit i {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 28px rgba(8, 125, 112, 0.36);
}

.dose-orbit i:nth-child(1) { left: 50%; top: -7px; }
.dose-orbit i:nth-child(2) { right: 12%; bottom: 14%; background: var(--amber); }
.dose-orbit i:nth-child(3) { left: 8%; bottom: 28%; background: var(--violet); }

.signal-card {
  position: absolute;
  left: 24px;
  bottom: 24px;
  max-width: 240px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
}

.signal-card.second {
  left: auto;
  right: 24px;
  bottom: 96px;
}

.signal-card b,
.signal-card span {
  display: block;
}

.signal-card b {
  color: var(--accent);
}

.signal-card span {
  color: var(--soft);
  margin-top: 4px;
}

@keyframes slowSpin {
  to { transform: rotate(360deg); }
}

.sim-grid {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr) 310px;
  gap: 14px;
  align-items: start;
}

.case-nav,
.case-stage,
.case-brief,
.method-card,
.official-source,
.station-panel,
.case-hero {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.case-nav,
.case-brief {
  position: sticky;
  top: 82px;
  max-height: calc(100svh - 98px);
  overflow: auto;
  scrollbar-width: thin;
}

.panel-head {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
}

.case-list {
  display: grid;
  gap: 8px;
  padding: 10px;
}

.case-list button,
.station-tabs button,
.question-button,
.decision-option,
.utility-button {
  font: inherit;
  cursor: pointer;
}

.case-list button {
  width: 100%;
  min-height: 88px;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--soft);
  background: rgba(8, 125, 112, 0.055);
  padding: 11px;
}

.case-list button.is-active {
  border-color: var(--accent);
  color: var(--ink);
  background: rgba(124, 224, 208, 0.13);
}

.case-list strong {
  display: block;
  margin-bottom: 7px;
  line-height: 1.15;
}

.case-list small {
  display: block;
  color: var(--muted);
}

.progress-line {
  height: 6px;
  overflow: hidden;
  margin-top: 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.progress-line span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--amber));
}

.case-stage {
  min-width: 0;
  padding: 12px;
}

.case-hero {
  padding: 16px;
  background:
    linear-gradient(120deg, rgba(124, 224, 208, 0.1), transparent 36%),
    var(--panel-2);
}

.case-hero h2 {
  margin: 8px 0 8px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.case-entry {
  color: var(--soft);
  font-size: 18px;
  margin: 12px 0 0;
}

.station-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 7px;
  margin: 12px 0;
}

.station-tabs button {
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 125, 112, 0.055);
  color: var(--soft);
  padding: 8px;
  font-size: 13px;
  font-weight: 820;
}

.station-tabs button.is-active {
  border-color: var(--accent);
  color: var(--ink);
  background: rgba(8, 125, 112, 0.11);
}

.station-panel {
  min-height: 520px;
  padding: 16px;
}

.station-panel h3,
.case-brief h3,
.method-card h3 {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.12;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: 14px;
}

.context-grid {
  display: grid;
  gap: 9px;
  margin: 12px 0 14px;
}

.context-chip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 125, 112, 0.055);
  padding: 11px 12px;
}

.context-chip b {
  display: block;
  margin-bottom: 4px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.context-chip p {
  margin: 0;
  color: var(--soft);
}

.actor-grid,
.doc-grid,
.decision-grid,
.method-grid,
.official-sources {
  display: grid;
  gap: 12px;
}

.actor-grid,
.decision-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.method-grid,
.official-sources {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.actor-card,
.doc-card,
.decision-card,
.conversation,
.trace-card,
.voice-card,
.free-question,
.timeline-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 125, 112, 0.055);
  padding: 13px;
}

.actor-card b,
.doc-card b,
.decision-card b,
.trace-card b,
.voice-card b {
  color: var(--ink);
}

.actor-card p,
.doc-card p,
.decision-card p,
.trace-card p,
.voice-card p,
.official-source p,
.method-card p {
  color: var(--muted);
}

.voice-card {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.sim-avatar {
  width: 76px;
  aspect-ratio: 1;
  border: 1px solid rgba(8, 125, 112, 0.32);
  border-radius: 50%;
  position: relative;
  background:
    radial-gradient(circle at 50% 34%, rgba(255, 255, 255, 0.96) 0 13%, transparent 14%),
    radial-gradient(circle at 50% 112%, rgba(8, 125, 112, 0.14) 0 48%, transparent 49%),
    #f7faf8;
  overflow: hidden;
}

.sim-avatar::before,
.sim-avatar::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 999px;
}

.sim-avatar::before {
  top: 30px;
  width: 34px;
  height: 18px;
  border: 1px solid rgba(22, 32, 30, 0.36);
  border-top: 0;
}

.sim-avatar::after {
  top: 42px;
  width: 18px;
  height: 3px;
  background: var(--amber);
}

.sim-avatar.is-speaking::after {
  animation: speak 0.32s infinite alternate;
}

@keyframes speak {
  from { height: 2px; }
  to { height: 9px; }
}

.voice-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.utility-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--soft);
  background: rgba(255, 255, 255, 0.04);
  padding: 8px 10px;
  font-weight: 760;
}

.utility-button:hover,
.question-button:hover,
.decision-option:hover {
  border-color: rgba(124, 224, 208, 0.62);
}

.timeline-list,
.plain-list,
.brief-list {
  margin: 0;
  padding-left: 18px;
  color: var(--soft);
}

.timeline-list li,
.plain-list li,
.brief-list li {
  margin: 7px 0;
}

.question-tools {
  display: grid;
  gap: 12px;
  margin-bottom: 12px;
}

.free-question {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.free-question input {
  min-height: 42px;
}

.question-groups {
  display: grid;
  gap: 12px;
}

.question-group {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.question-group h4 {
  margin: 0 0 8px;
  color: var(--soft);
}

.question-button {
  width: 100%;
  min-height: 52px;
  margin: 0 0 7px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
  color: var(--soft);
  background: rgba(8, 125, 112, 0.045);
  padding: 10px;
}

.question-button.is-asked {
  border-color: rgba(147, 213, 140, 0.5);
  color: var(--ink);
  background: rgba(147, 213, 140, 0.1);
}

.conversation {
  max-height: 620px;
  overflow: auto;
  scrollbar-width: thin;
}

.bubble {
  border-left: 3px solid var(--accent);
  padding: 10px 10px 10px 12px;
  margin-bottom: 10px;
  background: rgba(8, 125, 112, 0.055);
}

.bubble.answer {
  border-left-color: var(--amber);
}

.bubble b,
.bubble span {
  display: block;
}

.bubble span {
  margin-top: 5px;
  color: var(--soft);
}

.doc-card.is-locked {
  opacity: 0.62;
}

.doc-card .lockline {
  margin: 8px 0 0;
  color: var(--amber);
  font-size: 13px;
  font-weight: 760;
}

.decision-card {
  display: grid;
  gap: 9px;
}

.decision-option {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--soft);
  background: rgba(8, 125, 112, 0.055);
  padding: 10px;
  text-align: left;
}

.decision-option.is-selected {
  border-color: var(--accent);
  color: var(--ink);
  background: rgba(124, 224, 208, 0.13);
}

.decision-option[data-quality="best"].is-selected { border-color: var(--green); }
.decision-option[data-quality="risk"].is-selected { border-color: var(--red); }

.feedback {
  border-left: 3px solid var(--accent);
  padding: 10px;
  color: var(--soft);
  background: rgba(8, 125, 112, 0.055);
}

.feedback.risk { border-left-color: var(--red); }
.feedback.best { border-left-color: var(--green); }
.feedback.partial { border-left-color: var(--amber); }

.trace-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.65fr);
  gap: 12px;
}

.trace-card textarea {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  padding: 12px;
  font: inherit;
}

.trace-card textarea:focus {
  outline: 2px solid rgba(124, 224, 208, 0.35);
  border-color: var(--accent);
}

.trace-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.score-ring {
  display: grid;
  place-items: center;
  width: 112px;
  height: 112px;
  margin: 4px 0 14px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background:
    conic-gradient(var(--accent) calc(var(--score, 0) * 1%), rgba(22, 32, 30, 0.08) 0),
    #ffffff;
  color: var(--ink);
  font-size: 24px;
  font-weight: 900;
}

.target-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.target-cloud span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 8px;
  color: var(--muted);
  font-size: 12px;
}

.target-cloud span.is-hit {
  border-color: rgba(147, 213, 140, 0.62);
  color: var(--ink);
  background: rgba(147, 213, 140, 0.11);
}

.case-brief {
  padding: 14px;
}

.brief-block {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  margin-top: 12px;
}

.brief-block h4 {
  margin: 0 0 8px;
  color: var(--soft);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.source-link {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 7px;
  padding: 8px;
  color: var(--soft);
  font-size: 13px;
}

.source-link:hover {
  text-decoration: none;
  border-color: rgba(124, 224, 208, 0.6);
}

.official-source,
.method-card {
  padding: 16px;
}

.official-source h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.empty-state {
  color: var(--muted);
  padding: 16px;
}

@media (max-width: 1160px) {
  .sim-grid {
    grid-template-columns: 230px minmax(0, 1fr);
  }
  .case-brief {
    position: static;
    grid-column: 1 / -1;
    max-height: none;
  }
  .method-grid,
  .official-sources {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .sim-hero {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr);
  }
  .sim-hero-board {
    min-height: 340px;
  }
  .sim-grid,
  .two-col,
  .actor-grid,
  .decision-grid,
  .trace-layout,
  .method-grid,
  .official-sources {
    grid-template-columns: minmax(0, 1fr);
  }
  .case-nav {
    position: static;
    max-height: none;
  }
  .case-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .sim-hero {
    padding: 26px 12px;
  }
  .sim-hero-copy {
    padding: 16px 0;
  }
  .case-list,
  .station-tabs {
    grid-template-columns: minmax(0, 1fr);
  }
  .free-question {
    grid-template-columns: minmax(0, 1fr);
  }
  .station-panel,
  .case-stage,
  .case-hero,
  .case-brief {
    padding: 12px;
  }
}