:root {
  color-scheme: dark;
  --bg: #050608;
  --panel: #0b0d10;
  --panel-raised: #101318;
  --line: #292d33;
  --line-soft: #1c2025;
  --muted: #989ba0;
  --text: #f4f4f2;
  --accent: #7c54cd;
  --accent-soft: color-mix(in srgb, var(--accent) 14%, transparent);
  --deepseek: #7c54cd;
  --luna: #66d693;
  --sol: #2279dc;
  --opus: #d97757;
  --glm: #39b8b2;
  --tool: #e5b45c;
  --observation: #7fc8c0;
  --reasoning: #b6a3ff;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --terminal-font-size: .78rem;
  --terminal-label-size: .68rem;
  --viewer-nav-height: 58px;
  --mobile-toolbar-height: 46px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding-top: var(--viewer-nav-height);
  background: radial-gradient(circle at 80% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 34rem), var(--bg);
  color: var(--text);
  font: 13px/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
a { color: inherit; text-decoration: none; }
button, input, select { color: var(--text); font: inherit; }

.viewer-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 120;
  display: flex;
  min-height: var(--viewer-nav-height);
  align-items: center;
  gap: 12px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 91%, transparent);
  color: var(--muted);
  backdrop-filter: blur(18px);
  font-size: 12px;
  transition: transform .18s ease, opacity .18s ease;
}
.brand { color: var(--text); font: italic 800 18px/1.15 var(--display); font-synthesis: none; letter-spacing: .015em; padding-inline-end: .12em; }
.nav-slash { color: var(--line); }
.viewer-nav > .brand { flex: 0 0 auto; }
.viewer-trial-title { display: flex; flex: 1 1 auto; min-width: 0; align-items: baseline; gap: .35em; }
.trajectory-language-switcher { flex: 0 0 auto; margin-left: auto; }
#viewer-trial-model { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#viewer-trial-number { flex: 0 0 auto; white-space: nowrap; }

.viewer-layout {
  display: grid;
  grid-template-columns: minmax(320px, 370px) minmax(460px, 1fr);
  align-items: start;
  gap: 12px;
  width: min(1800px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 80px;
}
.viewer-rail {
  position: sticky;
  top: 82px;
  display: flex;
  height: calc(100vh - 102px);
  max-height: calc(100vh - 102px);
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  scrollbar-width: thin;
}
.run-picker { display: grid; gap: 7px; }
.run-picker > span, dt {
  color: var(--muted);
  font-size: 9px;
  letter-spacing: .11em;
  text-transform: uppercase;
}
select, input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-raised);
  outline: none;
}
select { min-height: 44px; padding: 0 11px; }
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.summary-card, .metrics-card, .legend-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.summary-card { overflow: hidden; border-top: 3px solid var(--accent); }
.run-identity { display: flex; align-items: center; gap: 11px; padding: 18px; border-bottom: 1px solid var(--line); }
.model-dot { width: 9px; height: 9px; flex: 0 0 auto; border-radius: 50%; background: var(--accent); }
.run-identity div { min-width: 0; }
.run-identity strong { display: block; overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.summary-stats, .token-stats { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; }
.summary-stats > div, .token-stats > div { padding: 13px 14px; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.summary-stats > div:nth-child(2n), .token-stats > div:nth-child(2n) { border-right: 0; }
.summary-stats > div.wide { grid-column: 1 / -1; border-right: 0; }
.summary-stats dd, .token-stats dd { margin: 5px 0 0; font-size: 14px; font-weight: 800; }
.summary-stats > div:last-child, .token-stats > div:nth-last-child(-n+2) { border-bottom: 0; }

.metrics-card, .legend-card { padding: 17px; }
.rail-heading h2 { margin: 0; font: italic 800 20px/1.15 var(--display); font-synthesis: none; letter-spacing: -.015em; padding-inline-end: .12em; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.legend-card p { margin: 12px 0 0; color: var(--muted); font: 12px/1.55 Inter, ui-sans-serif, system-ui, sans-serif; }
.token-stats { margin-top: 14px; border: 1px solid var(--line-soft); border-radius: 6px; overflow: hidden; }
.legend-card p { position: relative; padding-left: 17px; }
.legend-card strong { color: var(--text); }
.legend-swatch { position: absolute; top: .35em; left: 0; width: 8px; height: 8px; border-radius: 50%; background: var(--reasoning); }
.legend-swatch.summary { background: var(--luna); }

.trace-column { min-width: 0; max-width: 100%; }
.mobile-trace-toolbar, .mobile-outline-backdrop { display: none; }
.trajectory-policy-replay {
  overflow: hidden;
  margin-bottom: 14px;
  scroll-margin-top: 74px;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--line));
  border-radius: 8px;
  background: var(--panel);
}
.trajectory-policy-replay > header {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line-soft);
}
.trajectory-policy-replay > header > div:first-child { display: flex; min-width: 0; align-items: baseline; gap: 10px; }
.trajectory-policy-replay > header strong { font: italic 800 18px/1.2 var(--display); font-synthesis: none; white-space: normal; }
#rollout-outline-title,
#trajectory-policy-replay-title { max-width: none; white-space: nowrap; flex-shrink: 0; }
.trajectory-policy-replay > header small { color: var(--muted); font-size: 9px; white-space: nowrap; }
.trajectory-policy-replay > header small::before { content: '·'; margin-right: 10px; }
.trajectory-policy-replay > header button { flex: 0 0 auto; padding: 4px 8px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel-raised); cursor: pointer; font-size: 9px; }
.trajectory-policy-replay > header button:hover { border-color: var(--accent); }
.policy-selection-chips {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 5px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}
.policy-selection-chip {
  display: inline-flex;
  min-width: max-content;
  align-items: center;
  gap: 3px;
  padding: 2px 3px 2px 7px;
  border: 1px solid color-mix(in srgb, var(--policy-color, var(--accent)) 55%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--policy-color, var(--accent)) 10%, var(--panel));
  color: var(--text);
  font: 700 8px/1 var(--mono);
}
.policy-selection-chip.is-emphasized {
  border-color: var(--policy-color, var(--accent));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--policy-color, var(--accent)) 60%, transparent), 0 0 12px color-mix(in srgb, var(--policy-color, var(--accent)) 30%, transparent);
}
.policy-selection-chip-symbol { color: var(--policy-color, var(--accent)); font-size: 10px; }
.policy-selection-chip-symbol.policy-reference-best { color: #fff; text-shadow: 0 0 5px var(--policy-color, var(--accent)); }
.policy-selection-chip button,
.trajectory-policy-replay > header .policy-selection-chip button {
  display: inline-grid;
  width: 20px;
  min-height: 20px;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}
.policy-selection-chip button:hover,
.policy-selection-chip button:focus-visible { background: var(--accent-soft); color: var(--text); outline: 1px solid var(--accent); }
.policy-selection-status {
  position: absolute;
  top: calc(100% + 5px);
  right: 0;
  z-index: 2;
  max-width: min(360px, calc(100vw - 24px));
  margin: 0;
  padding: 5px 8px;
  border: 1px solid color-mix(in srgb, #ffcf4a 60%, var(--line));
  border-radius: 5px;
  background: var(--panel-raised);
  color: #ffcf4a;
  box-shadow: 0 6px 18px #000b;
  font-size: 8px;
}
.policy-selection-status:empty { display: none; }
.outline-policy-selection-status {
  position: static;
  max-width: none;
  margin: 0 12px 8px;
  box-shadow: none;
}
.trajectory-policy-replay-shell { position: relative; width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: #0e1520; }
.trajectory-policy-replay-shell > iframe { position: absolute; inset: 0; display: block; width: 100%; height: 100%; border: 0; }
.trajectory-policy-replay-loading { position: absolute; inset: 0; display: none; place-items: center; padding: 16px; color: var(--muted); font-size: 12px; text-align: center; }
.trajectory-policy-replay-shell > iframe { background: transparent; opacity: 1; transition: opacity .12s ease-out; }
.trajectory-policy-replay.is-loading .trajectory-policy-replay-loading { display: grid; }
.trajectory-policy-replay.is-loading .trajectory-policy-replay-shell > iframe { opacity: 0; pointer-events: none; }
@media (min-width: 851px) {
  /* Desktop panels scroll internally: fit the page below the fixed header so
     outer scrolling cannot push their sticky grid row under the navigation. */
  .viewer-layout { padding-bottom: 20px; }
  .trace-column {
    position: sticky;
    top: 82px;
    display: flex;
    height: calc(100vh - 102px);
    max-height: calc(100vh - 102px);
    flex-direction: column;
    overflow: hidden;
  }
  .trajectory-policy-replay {
    flex: 0 0 auto;
    width: 100%;
    max-width: min(100%, calc(97.78vh - 85.33px));
  }
  .steps {
    min-height: 0;
    flex: 1 1 auto;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
  }
  body.policy-selection-active:not(.policy-replay-active) .mobile-trace-toolbar {
    position: relative;
    display: flex;
    min-height: 40px;
    flex: 0 0 auto;
    align-items: center;
    margin-bottom: 8px;
    padding: 5px 7px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
  }
  body.policy-selection-active:not(.policy-replay-active) .mobile-outline-toggle,
  body.policy-selection-active:not(.policy-replay-active) .mobile-active-chapter,
  body.policy-selection-active:not(.policy-replay-active) #mobile-replay-close { display: none; }
  body.policy-selection-active:not(.policy-replay-active) .mobile-replay-actions { display: flex; min-width: 0; flex: 1 1 auto; }
}
.utilization-overview {
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--line));
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 95%, transparent);
  box-shadow: 0 16px 44px #0005;
  backdrop-filter: blur(18px);
}
.pulse-dock-sentinel { display: block; width: 1px; height: 1px; }
.utilization-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 14px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line-soft);
}
.utilization-head .run-identity { min-width: 0; flex: 1; padding: 0; border: 0; }
.pulse-stats { display: grid; flex: 1 0 100%; grid-template-columns: repeat(3, 1fr); margin: 0; border: 1px solid var(--line-soft); border-radius: 6px; overflow: hidden; }
.pulse-stats > div { min-width: 0; padding: 6px 7px; border-right: 1px solid var(--line-soft); }
.pulse-stats > div:last-child { border-right: 0; }
.pulse-stats dd { overflow: hidden; margin: 3px 0 0; font-size: 10px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
.utilization-stage { position: relative; min-height: 126px; border-bottom: 1px solid var(--line-soft); background: #07090c; }
.utilization-stage canvas { display: block; width: 100%; height: 126px; cursor: crosshair; outline: none; user-select: none; }
.utilization-stage canvas:focus-visible { box-shadow: inset 0 0 0 2px var(--accent); }
.utilization-tip {
  position: absolute;
  top: 2px;
  z-index: 2;
  max-width: 260px;
  padding: 3px 7px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #050608ed;
  box-shadow: 0 8px 26px #000b;
  color: var(--text);
  font-size: 8px;
  line-height: 1.25;
  pointer-events: none;
  white-space: nowrap;
}
.rollout-outline {
  display: flex;
  min-height: 220px;
  flex: 1 1 auto;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 96%, transparent);
}
.rollout-outline-head { display: flex; flex: 0 0 auto; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 13px 14px 10px; }
.rollout-outline h2 { margin: 0; font: italic 800 20px/1.2 var(--display); font-synthesis: none; letter-spacing: -.015em; padding-inline-end: .12em; }
.chapter-count { flex: 0 0 auto; padding-top: 3px; color: var(--muted); font-size: 8px; }
.rollout-synopsis { display: -webkit-box; overflow: hidden; flex: 0 0 auto; margin: 0 14px 11px; color: #c9cccf; font: 10.5px/1.55 Inter, ui-sans-serif, system-ui, sans-serif; -webkit-box-orient: vertical; -webkit-line-clamp: 8; }
.chapter-nav { min-height: 0; flex: 1 1 auto; overflow-y: auto; border-top: 1px solid var(--line-soft); scrollbar-width: thin; }
.chapter-item { border-bottom: 1px solid var(--line-soft); }
.chapter-item:last-child { border-bottom: 0; }
.chapter-item.active { background: var(--accent-soft); }
.chapter-link { position: relative; display: grid; width: 100%; grid-template-columns: 24px minmax(0, 1fr); gap: 7px; padding: 10px 12px; border: 0; background: transparent; text-align: left; cursor: pointer; }
.chapter-link:hover { background: var(--panel-raised); }
.chapter-link.active { background: transparent; }
.chapter-link.active::before { content: ""; position: absolute; inset: 7px auto 7px 0; width: 2px; border-radius: 2px; background: var(--accent); }
.chapter-number { padding-top: 1px; color: color-mix(in srgb, var(--accent) 75%, var(--muted)); font-size: 8px; }
.chapter-copy { display: grid; min-width: 0; gap: 3px; }
.chapter-title { color: var(--text); font: 700 11px/1.35 Inter, ui-sans-serif, system-ui, sans-serif; }
.chapter-summary { display: -webkit-box; overflow: hidden; color: #b5b9bd; font: 9.5px/1.45 Inter, ui-sans-serif, system-ui, sans-serif; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.chapter-meta { color: var(--muted); font-size: 8px; }
.chapter-policy-list { display: flex; flex-wrap: wrap; align-items: center; gap: 5px; padding: 0 12px 10px 43px; }
.chapter-policy-list:empty { display: none; }
.chapter-policy-label { margin-right: 2px; color: var(--muted); font-size: 7px; letter-spacing: .08em; text-transform: uppercase; }
.chapter-item.active .chapter-policy-label { color: color-mix(in srgb, var(--accent) 72%, var(--text)); }
/* Disclosure growth must not move the viewport to an anchor farther down the
   trace. Readers scroll into expanded content themselves, on mobile and desktop. */
.steps { position: relative; min-width: 0; max-width: 100%; min-height: 240px; padding: 12px 0 20px; overflow-anchor: none; }
.steps::before { content: ""; position: absolute; top: 0; bottom: 0; left: 78px; width: 1px; background: var(--line); }
.chapter-divider { position: relative; display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: baseline; gap: 15px; margin: 13px 0 10px; scroll-margin-top: 70px; }
.chapter-divider::after { content: ""; position: absolute; top: 50%; right: 0; left: 111px; z-index: 0; height: 1px; background: color-mix(in srgb, var(--accent) 38%, var(--line)); }
.chapter-divider-label { display: grid; align-self: start; justify-items: end; justify-self: end; gap: 1px; margin-right: 26px; color: var(--accent); font-size: 8px; font-weight: 800; letter-spacing: .1em; line-height: 1.1; text-transform: uppercase; }
.chapter-divider-number { letter-spacing: .16em; }
.chapter-divider strong { z-index: 1; width: fit-content; padding-right: 9px; background: var(--bg); font: 700 11px/1.4 Inter, ui-sans-serif, system-ui, sans-serif; }
.chapter-divider-meta { z-index: 1; grid-column: 2; width: fit-content; margin-top: -4px; padding-right: 9px; background: var(--bg); color: var(--muted); font-size: 8px; }
.step { position: relative; min-width: 0; max-width: 100%; scroll-margin-top: 70px; margin: 0 0 13px; }
.step > summary { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 15px; list-style: none; cursor: pointer; }
.step > summary::-webkit-details-marker { display: none; }
.step-meta { position: relative; display: flex; flex-direction: column; align-items: flex-end; gap: 3px; padding-top: 11px; color: var(--muted); font-size: 8px; }
.step-meta::after { content: ""; position: absolute; top: 15px; right: 11px; width: 6px; height: 6px; border: 2px solid var(--bg); border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 55%, var(--line)); transform: translateX(50%); }
.step-meta b { margin-right: 26px; color: var(--text); font-size: 11px; }
.step-meta > span { margin-right: 26px; }
.step-policy-list { display: flex; max-width: 84px; flex-wrap: wrap; justify-content: flex-end; gap: 4px; margin: 2px 26px 0 0; }
.unmapped-policies { flex: 0 0 auto; margin: 10px 0; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.unmapped-policies h2 { margin: 0 0 6px; font: 700 11px/1.4 Inter, ui-sans-serif, system-ui, sans-serif; }
.unmapped-policies p { margin: 0 0 9px; color: var(--muted); font: 10px/1.5 Inter, ui-sans-serif, system-ui, sans-serif; }
.unmapped-policy-list { display: flex; flex-wrap: wrap; gap: 6px; }
.policy-reference { display: inline-flex; min-height: 22px; align-items: center; gap: 4px; padding: 3px 7px; border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--line)); border-radius: 999px; background: color-mix(in srgb, var(--accent) 10%, var(--panel)); color: var(--text); font: 700 8px/1 var(--mono); cursor: pointer; }
.policy-reference:hover, .policy-reference:focus-visible { border-color: var(--accent); background: var(--accent-soft); outline: none; }
.policy-reference:disabled { cursor: not-allowed; opacity: .42; }
.policy-reference.is-selected {
  border-color: var(--text);
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 3px color-mix(in srgb, var(--text) 85%, transparent);
}
.policy-reference.is-emphasized {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 24%, var(--panel));
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent), 0 0 14px color-mix(in srgb, var(--accent) 45%, transparent);
}
.policy-reference-symbol { margin: 0 !important; color: var(--accent); font-size: 10px; }
.policy-reference-best .policy-reference-symbol { color: #fff; text-shadow: 0 0 5px var(--accent); }
.step > summary, .step-preview, .step-message-block, .step-markdown, .step-body { min-width: 0; max-width: 100%; }
.step-preview { padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); transition: border-color .15s ease, background .15s ease; }
.step-preview.agent-message { background: color-mix(in srgb, var(--text) 13%, var(--panel)); }
.step-preview.user-message { border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); background: color-mix(in srgb, var(--text) 17%, var(--panel)); }
.step > summary:hover .step-preview, .step[open] .step-preview { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); background: var(--panel-raised); }
.step > summary:hover .step-preview.agent-message, .step[open] .step-preview.agent-message { background: color-mix(in srgb, var(--text) 16%, var(--panel)); }
.step > summary:hover .step-preview.user-message, .step[open] .step-preview.user-message { background: color-mix(in srgb, var(--text) 20%, var(--panel)); }
.step-preview > strong, .step-message-block > strong { display: block; margin-bottom: 5px; color: var(--muted); font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.step-preview > p { display: -webkit-box; overflow: hidden; margin: 0; color: #d7d8da; font: 13px/1.55 Inter, ui-sans-serif, system-ui, sans-serif; -webkit-box-orient: vertical; -webkit-line-clamp: 2; white-space: pre-wrap; }
.step[open] .step-preview > p { display: block; overflow: visible; -webkit-line-clamp: unset; }
.step-markdown { overflow: hidden; max-height: 3.1em; color: #d7d8da; font: 13px/1.55 Inter, ui-sans-serif, system-ui, sans-serif; }
.step[open] .step-markdown { max-height: none; overflow: visible; }
.step-markdown > :first-child { margin-top: 0; }
.step-markdown > :last-child { margin-bottom: 0; }
.step-markdown p { margin: .65em 0; }
.step-markdown, .step-markdown p, .step-markdown li, .step-markdown blockquote { overflow-wrap: anywhere; }
.step-markdown strong { color: var(--text); font-weight: 700; }
.step-markdown h1, .step-markdown h2, .step-markdown h3, .step-markdown h4, .step-markdown h5, .step-markdown h6 { margin: .9em 0 .4em; color: var(--text); font: 750 1em/1.35 Inter, ui-sans-serif, system-ui, sans-serif; }
.step-markdown ul, .step-markdown ol { margin: .65em 0; padding-left: 1.45em; }
.step-markdown li + li { margin-top: .25em; }
.step-markdown blockquote { margin: .7em 0; padding-left: .8em; border-left: 2px solid var(--accent); color: var(--muted); }
.step-markdown code { padding: .08em .3em; border: 1px solid var(--line-soft); border-radius: 3px; background: #050608; color: #e9e5d8; font: .9em/1.4 var(--mono); }
.step-markdown p code, .step-markdown li code, .step-markdown blockquote code { white-space: normal; overflow-wrap: anywhere; word-break: break-word; }
.step-markdown pre { max-height: none; margin: .7em 0; padding: 10px 11px; }
.step-markdown pre code { padding: 0; border: 0; background: transparent; color: inherit; font: inherit; }
.step-message-block + .step-message-block { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line-soft); }
.step:not([open]) .step-preview.has-multiple .step-message-block + .step-message-block { display: none; }
.step-body { margin: 8px 0 0 111px; }
.activity { margin-top: 9px; overflow: hidden; border: 1px solid color-mix(in srgb, var(--tool) 35%, var(--line)); border-radius: 7px; background: #080706; }
.activity.observation { border-color: color-mix(in srgb, var(--observation) 35%, var(--line)); }
.activity > summary { display: flex; align-items: center; gap: 9px; padding: 9px 11px; list-style: none; cursor: pointer; }
.activity > summary::-webkit-details-marker { display: none; }
.activity > summary:hover { background: #11100d; }
.terminal > summary { min-height: 38px; background: #111315; }
.terminal-glyph { color: var(--tool); font: 800 11px/1 var(--mono); }
.activity-kind { flex: 0 0 auto; color: var(--tool); font-size: 8px; font-weight: 800; letter-spacing: .11em; }
.activity.observation .activity-kind { color: var(--observation); }
.activity-name { flex: 0 0 auto; font-size: 10px; }
.activity-preview { min-width: 0; overflow: hidden; color: var(--muted); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
pre { max-height: 70vh; overflow: auto; margin: 0; padding: 13px; border: 1px solid var(--line); border-radius: 7px; background: #050608; color: #d4d7da; font: 11px/1.6 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; overflow-wrap: anywhere; white-space: pre-wrap; }
.activity pre { border-width: 1px 0 0; border-radius: 0; }
.terminal-window { border-top: 1px solid var(--line); background: #050607; font-family: var(--mono); }
.terminal-command { display: grid; grid-template-columns: 24px minmax(0, 1fr); align-items: start; }
.terminal-command .terminal-prompt { padding: 13px 0 13px 13px; color: var(--tool); font: 800 var(--terminal-font-size)/1.6 var(--mono); user-select: none; }
.terminal-command pre { max-height: 46vh; padding-left: 6px; border: 0; background: transparent; color: #f0f1ed; }
.terminal-output { border-top: 1px solid #202225; }
.tool-output-head { display: flex; min-height: 28px; align-items: center; gap: 8px; padding: 5px 13px; color: var(--muted); user-select: none; }
.tool-output-label { font: 800 var(--terminal-label-size)/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.output-toggle { margin-left: auto; border: 0; background: transparent; padding: 2px 0; color: var(--accent); cursor: pointer; font: 650 var(--terminal-label-size)/1 var(--mono); letter-spacing: .03em; }
.output-toggle:hover { color: var(--text); }
.terminal-command pre, .terminal-output pre { font: var(--terminal-font-size)/1.6 var(--mono); }
.terminal-output pre { max-height: 280px; border: 0; background: transparent; color: #b9c0c4; }
.terminal-output.output-expanded pre { max-height: none; overflow: visible; }
.tool-input { min-width: 0; }
.tool-input-path { padding: 10px 13px; border-bottom: 1px solid var(--line-soft); color: var(--text); font: 650 var(--terminal-font-size)/1.5 var(--mono); overflow-wrap: anywhere; }
.tool-input-heading { display: flex; gap: 8px; align-items: baseline; padding: 7px 13px; color: var(--muted); font: 800 var(--terminal-label-size)/1.4 var(--mono); }
.tool-input-empty { font-weight: 400; }
.tool-input-source > pre { max-height: 46vh; min-width: 0; border: 0; background: transparent; font: var(--terminal-font-size)/1.6 var(--mono); }
.tool-input-before { border-left: 3px solid #aa6161; background: #aa61610b; }
.tool-input-after { border-left: 3px solid #659d7a; background: #659d7a0b; }
.tool-input-edit + .tool-input-edit { border-top: 1px solid var(--line); }
.tool-input-fields { display: grid; gap: 6px; margin: 0; padding: 10px 13px; font: var(--terminal-label-size)/1.5 var(--mono); }
.tool-input-fields > div { display: grid; grid-template-columns: minmax(80px, .35fr) minmax(0, 1fr); gap: 10px; }
.tool-input-fields dt { color: var(--muted); font: inherit; text-transform: none; letter-spacing: normal; }
.tool-input-fields dd { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; color: var(--text); }
.tool-input-description { margin: 0; padding: 10px 13px; color: var(--muted); font: var(--terminal-font-size)/1.6 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; }
.tool-input-tasks { padding-left: 30px; }
.exec-window { border-top: 1px solid var(--line); background: #050607; }
.exec-operations { display: grid; gap: 8px; padding: 10px; }
.exec-operation { overflow: hidden; border: 1px solid var(--line-soft); border-radius: 6px; background: #070809; }
.exec-operation-head { display: flex; min-height: 32px; align-items: center; gap: 8px; padding: 6px 9px; border-bottom: 1px solid var(--line-soft); }
.exec-operation-head strong { margin: 0; color: #eceee9; font-size: 9px; letter-spacing: .04em; text-transform: none; }
.exec-operation-index { color: var(--tool); font-size: 8px; }
.exec-meta { color: var(--muted); font-size: 8px; }
.exec-operation-head strong + .exec-meta { margin-left: auto; }
.exec-command { display: grid; grid-template-columns: 24px minmax(0, 1fr); align-items: start; }
.exec-command .terminal-prompt { padding: 10px 0 10px 10px; color: var(--tool); font: 800 var(--terminal-font-size)/1.6 var(--mono); user-select: none; }
.exec-command pre, .exec-operation-source { max-height: min(28vh, 240px); padding: 10px 10px 10px 4px; border: 0; border-radius: 0; background: transparent; color: #f0f1ed; font: var(--terminal-font-size)/1.6 var(--mono); }
.exec-operation-source { padding-left: 10px; color: #c8cccf; }
.exec-operation-note { margin: 0; padding: 9px 10px; color: var(--muted); font-size: 11px; }
.exec-plan { display: grid; gap: 0; margin: 0; padding: 5px 10px 8px; list-style: none; }
.exec-plan li { display: grid; grid-template-columns: 78px minmax(0, 1fr); gap: 9px; padding: 6px 0; border-top: 1px solid var(--line-soft); color: #d5d8da; font-size: 11px; line-height: 1.45; }
.exec-plan-status { align-self: start; color: var(--muted); font-size: 8px; letter-spacing: .04em; text-transform: uppercase; }
.exec-plan-status.in_progress { color: var(--tool); }
.exec-plan-status.completed { color: var(--luna); }
.exec-patch { color: #d8d2c3; }
.exec-result { border-top: 1px solid var(--line-soft); }
.exec-result .tool-output-head { padding-inline: 10px; }
.exec-result pre { max-height: 280px; padding: 10px; border: 0; border-radius: 0; background: transparent; color: #b9c0c4; font: var(--terminal-font-size)/1.6 var(--mono); }
.exec-result.output-expanded pre { max-height: none; overflow: visible; }
.exec-raw { border-top: 1px solid var(--line-soft); }
.exec-raw > summary { padding: 8px 10px; color: var(--muted); cursor: pointer; font-size: 8px; list-style-position: inside; }
.exec-raw > summary:hover { color: var(--text); }
.exec-raw > pre { max-height: min(30vh, 260px); border-width: 1px 0 0; border-radius: 0; color: #8e9498; }
.empty { padding: 70px 20px; color: var(--muted); text-align: center; }
.step.jump-flash .step-preview { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.step.timeline-selected .step-preview { border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

@media (max-width: 1500px) {
  .viewer-layout { grid-template-columns: 330px minmax(0, 1fr); }
}
@media (max-width: 850px) {
  .viewer-layout { grid-template-columns: 1fr; gap: 0; width: min(100% - 24px, 760px); padding-top: 16px; }
  .viewer-rail { display: contents; height: auto; max-height: none; }
  .pulse-dock-sentinel { height: 1px; }
  .utilization-overview { margin-bottom: 28px; }
  .utilization-head { flex-wrap: nowrap; }
  .utilization-head .pulse-stats { width: min(360px, 55%); flex: 0 1 360px; }
  .trace-column { grid-row: auto; }
  .mobile-trace-toolbar {
    position: sticky;
    top: var(--viewer-nav-height);
    z-index: 80;
    display: flex;
    min-height: var(--mobile-toolbar-height);
    align-items: center;
    gap: 7px;
    margin: 0 -1px;
    padding: 6px 7px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: color-mix(in srgb, var(--panel) 94%, transparent);
    box-shadow: 0 10px 26px #0009;
    backdrop-filter: blur(18px);
  }
  .mobile-trace-toolbar button { min-height: 32px; padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel-raised); cursor: pointer; font-size: 9px; }
  .mobile-trace-toolbar button:focus-visible { border-color: var(--accent); outline: 2px solid var(--accent-soft); outline-offset: 1px; }
  .mobile-outline-toggle { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 6px; }
  .mobile-active-chapter { min-width: 0; overflow: hidden; flex: 1 1 auto; color: var(--muted); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
  .mobile-replay-actions { display: flex; min-width: 0; flex: 1 1 auto; align-items: center; justify-content: flex-end; gap: 5px; }
  .mobile-replay-label { min-width: 0; overflow: hidden; color: var(--accent); font-size: 9px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
  .mobile-replay-actions #mobile-replay-close { width: 32px; flex: 0 0 32px; padding: 0; font-size: 16px; }
  body.policy-replay-active .mobile-active-chapter { display: none; }
  .trajectory-policy-replay { position: sticky; top: calc(var(--viewer-nav-height) + var(--mobile-toolbar-height)); z-index: 70; margin-top: 8px; scroll-margin-top: calc(var(--viewer-nav-height) + var(--mobile-toolbar-height) + 8px); box-shadow: 0 16px 32px #000b; }
  .trajectory-policy-replay > header > button { display: none; }
  .trajectory-policy-replay > header { grid-template-columns: minmax(0, 1fr); }
  .replay-policy-selection { grid-column: 1 / -1; grid-row: 2; }
  .chapter-divider, .step { scroll-margin-top: calc(var(--viewer-nav-height) + var(--mobile-toolbar-height) + 16px); }
  .rollout-outline {
    position: fixed;
    inset: var(--viewer-nav-height) auto 0 0;
    z-index: 100;
    width: min(88vw, 380px);
    min-height: 0;
    max-height: none;
    margin: 0;
    border-radius: 0 10px 10px 0;
    box-shadow: 20px 0 55px #000d;
    visibility: hidden;
    transform: translateX(-105%);
    transition: transform .18s ease, visibility .18s;
  }
  body.outline-drawer-open { position: fixed; width: 100%; overflow: hidden; }
  body.outline-drawer-open .rollout-outline { visibility: visible; transform: translateX(0); }
  .chapter-nav { max-height: none; }
  .mobile-outline-backdrop { position: fixed; inset: var(--viewer-nav-height) 0 0; z-index: 90; display: block; width: 100%; border: 0; background: #0009; }
  body.pulse-docked .viewer-nav { transform: none; opacity: 1; pointer-events: auto; }
}
@media (max-width: 600px) {
  .viewer-nav { padding: 0 14px; }
  .utilization-head { flex-wrap: wrap; }
  .utilization-head .pulse-stats { width: 100%; flex: 1 0 100%; }
  .left-rail { grid-template-columns: 1fr; }
  .trajectory-policy-replay > header > div:first-child { display: grid; gap: 1px; }
  .trajectory-policy-replay-shell > iframe { height: 100%; }
  .steps::before { left: 47px; }
  .chapter-divider { grid-template-columns: 59px minmax(0, 1fr); gap: 9px; }
  .chapter-divider::after { left: 68px; }
  .chapter-divider-label { margin-right: 16px; }
  .step > summary { grid-template-columns: 59px minmax(0, 1fr); gap: 9px; }
  .step-meta b, .step-meta > span { margin-right: 16px; }
  .step-policy-list { margin-right: 16px; }
  .step-meta::after { right: 7px; }
  .step-body { margin-left: 68px; }
}