:root {
  --bg: #0d0e0c;
  --paper: #11120f;
  --panel: #171815;
  --panel-2: #1d1d19;
  --surface: #1d1d19;
  --text: #f1f0e8;
  --muted: #a6a39b;
  --faint: #6f6d67;
  --line: #2d2d29;
  --line-strong: #55534b;
  --accent: #5aa7ff;
  --accent-2: #f0643c;
  --good: #6cac7a;
  --bad: #d83b3b;
  --warn: #e7a74d;
  --mono: "Cascadia Mono", "SFMono-Regular", "Fira Code", Consolas, ui-monospace, monospace;
}

body.light {
  --bg: #efede6;
  --paper: #f7f5ee;
  --panel: #f2f0e9;
  --panel-2: #e8e5db;
  --surface: #e8e5db;
  --text: #11110f;
  --muted: #69665f;
  --faint: #918d84;
  --line: #d6d1c5;
  --line-strong: #9d978a;
  --accent: #ef6238;
  --accent-2: #ef6238;
  --good: #4b8760;
  --bad: #c83b30;
  --warn: #b77a26;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    linear-gradient(90deg, transparent 0 calc(50% - 750px), var(--line) calc(50% - 750px) calc(50% - 749px), transparent calc(50% - 749px) calc(50% + 749px), var(--line) calc(50% + 749px) calc(50% + 750px), transparent calc(50% + 750px)),
    var(--bg);
  font-family: var(--mono);
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 0 14px;
  color: var(--text);
  background: transparent;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  color: var(--accent);
  border-color: var(--accent);
}

button:disabled {
  opacity: .55;
  cursor: wait;
}

button svg {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}

input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
}

input::placeholder {
  color: var(--faint);
}

code {
  color: var(--accent);
}

pre {
  margin: 0;
  white-space: pre-wrap;
}

.site-shell {
  width: min(1500px, calc(100vw - 32px));
  min-height: 100vh;
  margin: 0 auto;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  background: var(--paper);
  overflow-x: hidden;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: 60px;
  display: grid;
  grid-template-columns: minmax(245px, auto) 1fr auto;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(16px);
  max-width: 100vw;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 28px;
  border-right: 1px solid var(--line);
}

.brand b {
  display: block;
  font-size: 18px;
  line-height: 1;
}

.brand small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.mark {
  width: 34px;
  height: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  flex: 0 0 auto;
}

.mark i {
  background: var(--text);
}

.navlinks {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 24px;
}

.navlinks a {
  height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 11px;
  color: var(--muted);
  font-size: 14px;
}

.navlinks a:hover,
.navlinks a.active {
  color: var(--text);
}

.navlinks a.active {
  background: var(--panel-2);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 28px 0 12px;
}

.nav-button,
.status-pill {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  padding: 0 13px;
  color: var(--text);
  background: transparent;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.status-pill {
  color: var(--accent);
  border-color: var(--line);
}

.status-pill.streaming {
  box-shadow: inset 3px 0 0 var(--good);
}

.status-pill.warn {
  color: var(--warn);
}

.icon-only {
  width: 38px;
  padding: 0;
}

main {
  min-height: calc(100vh - 60px);
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr);
  gap: 72px;
  padding: 54px 44px 30px;
}

.overline {
  margin: 0 0 20px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.hero-copy h1,
.about-hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(50px, 6.2vw, 82px);
  line-height: .92;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.hero-copy h1 span,
.about-hero h1 span,
.headline-band h2 span {
  color: var(--accent);
}

.hero-copy h1 em,
.about-hero h1 em {
  display: block;
  color: var(--muted);
  font-style: normal;
}

.hero-copy h1 strong {
  display: block;
  color: var(--text);
  font: inherit;
}

.hero-text {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.primary-btn {
  min-height: 50px;
  padding: 0 24px;
  color: var(--bg);
  background: var(--text);
  border-color: var(--text);
  font-size: 15px;
}

.primary-btn:hover {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

.outline-btn {
  min-height: 50px;
  padding: 0 24px;
  font-size: 15px;
}

.wide {
  width: 100%;
}

.system-card,
.health-panel,
.command-panel,
.answer-card,
.metrics-row,
.graph-panel,
.lifecycle,
.report-column,
.restore-card,
.diff-card,
.legend,
.trust-panel,
.timeline-panel,
.about-grid article {
  border: 1px solid var(--line);
  background: var(--panel);
}

.system-card {
  align-self: start;
  min-height: 420px;
}

.window-bar {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding: 0 18px;
  color: var(--text);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.window-bar span {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.dot {
  width: 8px;
  height: 8px;
  display: inline-block;
  margin-right: 9px;
  background: var(--muted);
}

.dot.blue {
  background: var(--accent);
}

.dot.live {
  background: var(--good);
}

.text-action {
  min-height: auto;
  border: 0;
  padding: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.text-action:hover {
  color: var(--accent);
  border: 0;
}

.cockpit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.cockpit-grid div {
  min-width: 0;
  min-height: 88px;
  padding: 16px;
  border-right: 1px solid var(--line);
}

.cockpit-grid div:last-child {
  border-right: 0;
}

.cockpit-grid small,
.agent-row small {
  display: block;
  margin-bottom: 8px;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cockpit-grid b {
  display: block;
  overflow: hidden;
  color: var(--text);
  font-size: 15px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cockpit-students {
  max-height: 246px;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  padding: 0;
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 4%, transparent), transparent 44px),
    color-mix(in srgb, var(--panel) 84%, var(--bg));
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.cockpit-students::-webkit-scrollbar {
  width: 7px;
}

.cockpit-students::-webkit-scrollbar-track {
  background: transparent;
}

.cockpit-students::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: 999px;
  background: var(--line-strong);
  background-clip: content-box;
}

.cockpit-students button {
  width: 100%;
  min-height: 48px;
  display: grid;
  grid-template-columns: minmax(86px, .34fr) minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 10px 16px;
  color: var(--text);
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, box-shadow .18s ease;
}

.cockpit-students button:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.cockpit-students button.active {
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.cockpit-students .who {
  min-width: 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 900;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cockpit-students .mini {
  min-width: 0;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cockpit-students button.active .mini,
.cockpit-students button:hover .mini {
  color: var(--text);
}

#teacher-view .cockpit-students {
  max-height: 340px;
}

/* Infinite Scrolling Marquee */
.marquee-box {
  overflow: hidden;
  white-space: nowrap;
  width: 100%;
  position: relative;
  box-sizing: border-box;
}

.marquee-active {
  display: block !important;
  width: max-content;
  text-overflow: clip !important;
  white-space: nowrap;
}

.marquee-text {
  display: inline-block;
  animation: marquee-scroll 10s linear infinite;
  white-space: nowrap;
}

.marquee-text span {
  display: inline-block;
}

@keyframes marquee-scroll {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }
}

.storage-strip {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 10%, transparent), transparent 55%),
    var(--panel);
}

.storage-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.storage-head span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.storage-head small {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 2px;
}

.storage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.storage-grid div {
  min-width: 0;
  padding: 14px 16px 16px;
  border-right: 1px solid var(--line);
}

.storage-grid div:last-child {
  border-right: 0;
}

.storage-grid small {
  display: block;
  margin-bottom: 8px;
  color: var(--faint);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.storage-grid b {
  display: block;
  overflow: hidden;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.storage-grid span {
  display: block;
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.agent-list {
  border-bottom: 1px solid var(--line);
}

.agent-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
}

.agent-row:last-child {
  border-bottom: 0;
}

.agent-row b {
  display: block;
  font-size: 16px;
  margin-bottom: 7px;
}

.agent-state {
  align-self: center;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.agent-state.ok {
  color: var(--good);
}

.agent-state.ready {
  color: var(--accent);
}

.agent-state.stale {
  color: var(--faint);
}

.agent-state.warn {
  color: var(--warn);
}

.setup-preview {
  padding: 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.setup-preview pre {
  overflow: auto;
  border: 1px solid var(--line);
  padding: 14px;
  color: var(--text);
  background: var(--bg);
}

.muted-line {
  color: var(--faint);
}

.headline-band {
  position: relative;
  margin: 26px 44px 22px;
  padding: 24px 0 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.headline-band::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(360px, 44vw);
  height: 2px;
  background: var(--accent-2);
}

.headline-band h2 {
  margin: 0;
  max-width: 1120px;
  font-size: clamp(34px, 4.2vw, 64px);
  line-height: .98;
}

.headline-band p {
  margin: 16px 0 0;
  max-width: 850px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
}

/* Carousel Nav (hidden by default) */
.carousel-nav {
  display: none;
  align-items: center;
  justify-content: space-between;
  max-width: 100%;
  margin: 0 auto 24px;
  padding: 0 44px;
  gap: 16px;
}

.carousel-nav.visible {
  display: flex;
}

.carousel-tabs {
  display: flex;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.carousel-tab {
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 10px 24px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 3px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.carousel-tab span {
  font-size: 9px;
  font-weight: 800;
  color: var(--accent-2);
  opacity: 0.85;
}

.carousel-tab.active {
  background: var(--panel-2);
  color: var(--text);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.carousel-arrow {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--muted);
  width: 42px;
  height: 42px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.carousel-arrow:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--panel-2);
}

.workbench {
  display: grid;
  grid-template-columns: minmax(310px, .78fr) minmax(620px, 1.45fr) minmax(360px, .9fr);
  gap: 16px;
  padding: 0 44px 24px;
  height: auto;
  min-height: 0;
  box-sizing: border-box;
  align-items: start;
}

.workbench.maximized-mode {
  display: block !important;
  height: calc(100vh - 190px);
  min-height: 520px;
}

.case-column,
.graph-column,
.report-column {
  min-width: 0;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 82%, var(--paper));
  border-radius: 0;
  height: auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  box-shadow: 0 18px 48px color-mix(in srgb, #000 16%, transparent);
}

.case-column {
  overflow: hidden;
}

.case-column>*,
.graph-column>*,
.report-column>* {
  border-right: 0;
}

/* Maximized panel state styling */
.case-column.maximized,
.graph-column.maximized,
.report-column.maximized {
  width: 100% !important;
  max-width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  height: 100% !important;
  border: 1px solid var(--line) !important;
  border-radius: 4px;
  background: var(--panel) !important;
}

.case-column.maximized>*,
.graph-column.maximized>*,
.report-column.maximized>* {
  border-right: 0 !important;
}

.graph-column.maximized .graph-panel {
  flex: 1;
}

.graph-column.maximized #graph {
  flex: 1;
  height: auto;
  min-height: 0;
}

.hidden-slide {
  display: none !important;
}

/* Panel Actions Maximize Button */
.panel-btn {
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
}

.panel-btn:hover {
  color: var(--accent);
}

.panel-btn svg {
  width: 14px;
  height: 14px;
}

.section-title {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
}

.section-title span,
.legend-title,
.answer-head span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.section-title b {
  color: var(--accent);
  font-size: 34px;
  line-height: 1;
}

.panel-title-actions,
.graph-actions,
.report-actions {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.panel-title-actions {
  flex: 0 0 auto;
}

.report-actions {
  justify-content: flex-end;
}

.section-title.tight {
  min-height: 48px;
}

.health-bar {
  height: 10px;
  margin: 20px 22px 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 0;
  overflow: hidden;
}

.health-bar i {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--warn), var(--good));
  transition: width .45s ease, background .25s ease;
}

.health-breakdown {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.health-breakdown span {
  min-height: 64px;
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.health-breakdown span:last-child {
  border-right: 0;
}

.health-breakdown b {
  display: block;
  color: var(--text);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 2px;
}

.ask-box,
.teach-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

#question,
#teach-input {
  min-height: 64px;
  padding: 0 20px;
  font-size: 14px;
  color: var(--text);
  background: transparent;
  border: 0;
  outline: 0;
}

#ask-btn,
#teach-btn {
  min-width: 116px;
  border: 0;
  border-left: 1px solid var(--line);
  color: var(--text);
  background: rgba(90, 167, 255, 0.08);
  font-weight: 700;
  font-size: 12px;
  transition: all 0.2s ease;
  cursor: pointer;
}

#ask-btn:hover {
  background: var(--accent);
  color: #000;
}

#teach-btn {
  background: rgba(240, 100, 60, 0.08);
  color: var(--accent-2);
}

#teach-btn:hover {
  background: var(--accent-2);
  color: #000;
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.chip {
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0 12px;
  color: var(--muted);
  font-size: 11px;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.chip:hover {
  color: var(--text);
  border-color: var(--accent);
  background: rgba(90, 167, 255, 0.05);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.ctl {
  min-height: 56px;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ctl:hover {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

#heal-btn {
  grid-column: span 2;
  border-right: 0;
  background: rgba(231, 167, 77, 0.03);
  color: var(--warn);
}

#heal-btn:hover {
  background: rgba(231, 167, 77, 0.08);
}

#consolidate-btn {
  /* column 1 */
}

#cross-agent-btn {
  /* column 2 */
  border-right: 0;
  color: var(--accent);
}

#cross-agent-btn:hover {
  background: rgba(90, 167, 255, 0.05);
}

#age-btn {
  /* column 1 */
  border-bottom: 0;
}

#age-reset {
  /* column 2 */
  border-right: 0;
  border-bottom: 0;
}

.answer-card {
  border-top: 0;
}

.answer-head {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
}

.vote {
  display: flex;
  gap: 8px;
}

.vote button {
  width: 34px;
  min-height: 32px;
  padding: 0;
}

.answer-text {
  min-height: 96px;
  padding: 22px 18px 10px;
  font-size: clamp(34px, 4vw, 58px);
  line-height: .95;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.answer-flag {
  margin: 0 18px 18px;
  border-left: 3px solid var(--bad);
  padding: 12px 14px;
  color: var(--muted);
  background: color-mix(in srgb, var(--bad) 9%, transparent);
  font-size: 12px;
  line-height: 1.5;
}

.answer-flag.ok {
  border-left-color: var(--good);
  background: color-mix(in srgb, var(--good) 9%, transparent);
}

#autopsy-toggle {
  margin: 0 18px 18px;
  width: calc(100% - 36px);
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 0;
}

.metrics-row div {
  min-height: 96px;
  padding: 18px;
  border-right: 1px solid var(--line);
}

.metrics-row div:last-child {
  border-right: 0;
}

.metrics-row b {
  display: block;
  margin-bottom: 12px;
  font-size: 28px;
}

.metrics-row span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.graph-column {
  display: flex;
  flex-direction: column;
  height: auto;
  min-height: 0;
  position: relative;
}

.graph-panel {
  display: flex;
  flex-direction: column;
  flex: none;
  min-height: 0;
  border-bottom: 1px solid var(--line);
}

.graph-head {
  padding-right: 0;
}

.tabs {
  align-self: stretch;
  display: flex;
  border-left: 1px solid var(--line);
}

.tabs span {
  display: inline-flex;
  align-items: center;
  border-right: 1px solid var(--line);
  padding: 0 14px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0;
  text-transform: none;
}

.tabs .active {
  color: var(--bg);
  background: var(--text);
}

#graph {
  position: relative;
  flex: none;
  height: 620px;
  min-height: 620px;
  overflow: hidden;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    color-mix(in srgb, var(--bg) 88%, var(--panel));
  background-size: 76px 76px;
}

#graph .vis-network {
  /* Absolutely fill #graph so the vis-network div always covers the full
     container regardless of what inline styles vis-network sets on it.
     Canvas inside is still sized by setSize() — this just prevents the
     "canvas 620px but container 800px" gap that shows grid below nodes. */
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: auto !important;
  height: auto !important;
}

#graph .vis-network canvas,
#graph canvas {
  display: block;
}

.native-graph {
  width: 100%;
  height: 100%;
  min-height: 620px;
  display: block;
}

.native-edge {
  stroke: var(--bad);
  stroke-width: 2.5;
  stroke-dasharray: 8 7;
  marker-end: url(#native-arrow);
}

.native-edge-label {
  fill: var(--bad);
  font-family: var(--mono);
  font-size: 11px;
  paint-order: stroke;
  stroke: var(--bg);
  stroke-width: 5px;
  stroke-linejoin: round;
}

.native-node {
  cursor: pointer;
}

.native-node text {
  fill: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 900;
  paint-order: stroke;
  stroke: var(--bg);
  stroke-width: 5px;
  stroke-linejoin: round;
}

.native-node .native-source {
  fill: var(--muted);
  font-size: 10px;
  font-weight: 700;
}

.native-node:hover circle,
.native-node.blamed circle {
  filter: drop-shadow(0 0 10px color-mix(in srgb, var(--accent) 60%, transparent));
}

.node-detail {
  position: absolute;
  top: 72px;
  right: 18px;
  z-index: 10;
  width: min(360px, calc(100% - 36px));
  border: 1px solid var(--line-strong);
  padding: 16px;
  background: var(--panel);
}

.node-detail h4 {
  margin: 0 38px 10px 0;
  font-size: 28px;
  line-height: 1;
  overflow-wrap: anywhere;
}

.node-detail .close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  min-height: 30px;
  padding: 0;
}

.lifecycle {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 0;
  background: var(--paper);
}

.life-step {
  min-height: 96px;
  padding: 18px;
  border-right: 1px solid var(--line);
  border-top: 0;
  border-bottom: 0;
  border-left: 0;
  color: var(--faint);
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
}

.life-step:hover {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.life-step:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  color: var(--text);
}

.life-step:last-child {
  border-right: 0;
}

.life-step b {
  display: block;
  margin-bottom: 16px;
  color: currentColor;
  font-size: 18px;
}

.life-step span {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.life-step.active {
  color: var(--text);
  box-shadow: inset 0 -3px 0 var(--accent);
}

.life-step.done {
  color: var(--bg);
  background: var(--good);
  box-shadow: none;
}

.report-column {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  background: color-mix(in srgb, var(--panel) 88%, var(--paper));
}

.report-head {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}

.report-head h3 {
  margin: 0;
  font-size: 30px;
  line-height: 1;
}

.report-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.report-scroll-container {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}
.report-scroll-container::-webkit-scrollbar { width: 5px; height: 5px; }
.report-scroll-container::-webkit-scrollbar-track { background: transparent; }
.report-scroll-container::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }
.report-scroll-container::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.autopsy-panel {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  border-bottom: 1px solid var(--line);
}

.belief {
  position: relative;
  padding: 16px 18px 16px 22px;
  border-bottom: 1px solid var(--line);
}

.belief::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--good);
}

.belief.ungrounded::before {
  background: var(--bad);
}

.belief-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.stmt {
  font-size: 22px;
  line-height: 1.05;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.src {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.fields {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.field {
  border: 1px solid var(--line);
  padding: 4px 7px;
  color: var(--muted);
  font-size: 10px;
}

.field.good {
  color: var(--good);
  border-color: color-mix(in srgb, var(--good) 60%, var(--line));
}

.field.bad {
  color: var(--bad);
  border-color: color-mix(in srgb, var(--bad) 60%, var(--line));
}

.field b {
  color: var(--text);
}

.forget-btn {
  min-height: 34px;
  flex: 0 0 auto;
  color: var(--bad);
  border-color: var(--bad);
}

.forget-btn:hover {
  color: var(--bg);
  background: var(--bad);
}

.empty-report {
  min-height: 160px;
  display: grid;
  place-items: center;
  color: var(--faint);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 2px;
  text-align: center;
  text-transform: uppercase;
}

.restore-card,
.diff-card,
.legend,
.trust-panel,
.timeline-panel {
  border-top: 0;
  border-left: 0;
  border-right: 0;
}

.restore-card pre {
  min-height: 150px;
  max-height: 240px;
  overflow: auto;
  padding: 18px 22px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
  background: var(--bg);
}

.diff-card {
  padding: 18px 22px;
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.diff-grid div {
  border: 1px solid var(--line);
  padding: 16px;
  background: var(--bg);
}

.diff-grid span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.diff-grid b {
  display: block;
  font-size: 20px;
  overflow-wrap: anywhere;
}

#diff-before {
  color: var(--bad);
  text-decoration: line-through;
}

#diff-after {
  color: var(--good);
}

.diff-card p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.legend,
.trust-panel,
.timeline-panel {
  padding: 18px 22px;
}

.legend {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 12px;
  color: var(--muted);
  font-size: 12px;
}

.legend-title {
  grid-column: 1 / -1;
  color: var(--text);
}

.key {
  width: 12px;
  height: 12px;
  display: inline-block;
  margin-right: 7px;
  border: 1px solid var(--text);
  vertical-align: -2px;
}

.key.grounded {
  background: var(--good);
}

.key.ungrounded {
  background: var(--bad);
}

.key.stale {
  opacity: .45;
}

.key.conflict {
  background: var(--bad);
  transform: rotate(45deg);
}

.trust-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
}

.trust-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 88px;
  gap: 12px;
  align-items: center;
}

.trust-meta {
  min-width: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
}

.trust-meta b {
  display: block;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.trust-row input[type="range"] {
  width: 100%;
  accent-color: var(--accent-2);
}

.trust-value {
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 900;
  text-align: right;
}

.timeline-panel {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.clock-tag {
  color: var(--warn);
}

.timeline {
  flex: 1;
  min-height: 180px;
  max-height: 360px;
  margin-top: 12px;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  padding-right: 8px;
}

.timeline,
.autopsy-panel,
.restore-card pre,
pre {
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.timeline::-webkit-scrollbar,
.autopsy-panel::-webkit-scrollbar,
.restore-card pre::-webkit-scrollbar,
pre::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

.timeline::-webkit-scrollbar-track,
.autopsy-panel::-webkit-scrollbar-track,
.restore-card pre::-webkit-scrollbar-track,
pre::-webkit-scrollbar-track {
  background: transparent;
}

.timeline::-webkit-scrollbar-thumb,
.autopsy-panel::-webkit-scrollbar-thumb,
.restore-card pre::-webkit-scrollbar-thumb,
pre::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 3px;
  transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline::-webkit-scrollbar-thumb:hover,
.autopsy-panel::-webkit-scrollbar-thumb:hover,
.restore-card pre::-webkit-scrollbar-thumb:hover,
pre::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.tl-row {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) auto;
  gap: 9px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

.tl-dot {
  width: 8px;
  height: 8px;
  margin-top: 5px;
  background: var(--muted);
}

.tl-dot.seed {
  background: var(--accent);
}

.tl-dot.recall {
  background: var(--text);
}

.tl-dot.forget,
.tl-dot.heal {
  background: var(--bad);
}

.tl-dot.improve {
  background: var(--good);
}

.tl-dot.age {
  background: var(--warn);
}

.tl-dot.trust {
  background: var(--accent-2);
}

.tl-dot.remember,
.tl-dot.agent {
  background: var(--accent);
}

.tl-label {
  color: var(--text);
  font-size: 12px;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tl-detail {
  margin-top: 3px;
  color: var(--faint);
  font-size: 11px;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tl-time {
  color: var(--faint);
  font-size: 10px;
  white-space: nowrap;
}

h1,
h2,
h3,
h4,
.overline,
.num,
.brand b,
.navlinks a {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
  letter-spacing: -0.02em;
}

.about-view {
  padding: 46px 36px 100px;
}

.about-hero {
  padding: 24px 8px 58px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.about-hero::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 0;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(90, 167, 255, 0.08) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.about-hero h1 {
  max-width: 980px;
  position: relative;
  z-index: 1;
}

.about-hero p:last-child {
  max-width: 900px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 72px;
}

.about-grid article {
  min-height: 250px;
  padding: 32px;
  background: var(--panel);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.about-grid article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.about-grid article:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 12px 30px -10px rgba(90, 167, 255, 0.15);
}

.about-grid article:hover::before {
  opacity: 1;
}

.num {
  display: block;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 900;
}

.about-grid h2 {
  margin: 20px 0 14px;
  font-size: clamp(24px, 2.5vw, 38px);
  line-height: 1.15;
}

.about-grid p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.section-heading {
  margin-bottom: 38px;
}

.section-heading h2 {
  margin: 0;
  max-width: 980px;
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.1;
}

.section-heading h2 span {
  color: var(--accent);
}

.section-heading p:last-child {
  max-width: 900px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.architecture-section {
  margin-bottom: 80px;
}

.proof-section,
.demo-path-section,
.agent-proof-section {
  margin-bottom: 80px;
}

.proof-grid,
.agent-proof {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  background: var(--panel);
}

.proof-grid article,
.agent-proof article {
  min-height: 220px;
  padding: 28px;
  border-right: 1px solid var(--line);
  position: relative;
}

.proof-grid article:last-child,
.agent-proof article:last-child {
  border-right: 0;
}

.proof-grid h3 {
  margin: 22px 0 12px;
  color: var(--text);
  font-size: 24px;
  line-height: 1.1;
}

.proof-grid p,
.agent-proof span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.proof-grid code {
  display: inline-block;
  margin-top: 18px;
  padding: 6px 8px;
  color: var(--accent-2);
  background: rgba(240, 100, 60, 0.06);
  border: 1px dashed rgba(240, 100, 60, 0.24);
  font-size: 11px;
}

.demo-path {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line);
  background: var(--paper);
}

.demo-path div {
  min-height: 168px;
  padding: 26px;
  border-right: 1px solid var(--line);
  position: relative;
}

.demo-path div:not(:last-child)::after {
  content: "->";
  position: absolute;
  top: 26px;
  right: -15px;
  z-index: 1;
  width: 30px;
  height: 24px;
  display: grid;
  place-items: center;
  color: #071017;
  background: var(--accent);
  font-family: var(--mono);
  font-weight: 900;
}

.demo-path div:last-child {
  border-right: 0;
}

.demo-path b,
.agent-proof b {
  display: block;
  color: var(--text);
  font-size: 20px;
  line-height: 1.1;
}

.demo-path span {
  display: block;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.agent-proof article {
  min-height: 190px;
}

.agent-proof i,
.agent-proof svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  margin-bottom: 22px;
}

.agent-proof span {
  display: block;
  margin-top: 14px;
}

.site-footer {
  padding: 88px 36px 72px;
  border-top: 1px solid var(--line);
}

.footer-cta {
  width: min(1100px, 100%);
  margin: 0 auto 86px;
  padding: 48px 58px 58px;
  color: #f1f0e8;
  background: #070807;
  border: 1px solid color-mix(in srgb, var(--line) 76%, #ffffff);
}

.footer-cta-copy {
  text-align: center;
}

.footer-cta .overline {
  margin-bottom: 18px;
}

.footer-cta h2 {
  margin: 0;
  color: #f1f0e8;
  font-size: clamp(48px, 6vw, 76px);
  line-height: .95;
}

.footer-cta p:last-child {
  width: min(760px, 100%);
  margin: 22px auto 0;
  color: #a6a39b;
  font-size: 16px;
  line-height: 1.65;
}

.footer-actions {
  width: min(980px, 100%);
  margin: 34px auto 0;
}

.footer-command {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 58px;
  min-height: 58px;
  background: #f1f0e8;
  color: #070807;
}

.footer-command code {
  display: flex;
  align-items: center;
  min-width: 0;
  padding: 0 22px;
  color: #070807;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-command {
  min-height: 58px;
  width: 58px;
  padding: 0;
  color: #070807;
  border: 0;
  border-left: 1px solid #c9c5ba;
}

.copy-command:hover {
  color: #070807;
  background: var(--accent);
}

.footer-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 20px;
}

.footer-button {
  min-height: 66px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid #f1f0e8;
  color: #070807;
  background: #f1f0e8;
  font-weight: 900;
}

.footer-button:hover {
  color: #070807;
  border-color: var(--accent);
  background: var(--accent);
}

.footer-button svg {
  width: 17px;
  height: 17px;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(180px, .55fr) minmax(220px, .65fr);
  gap: 72px;
  padding: 58px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.footer-brand .mark {
  margin-bottom: 22px;
}

.footer-brand p {
  margin: 0 0 9px;
  max-width: 420px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 13px;
}

.footer-nav h3 {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.footer-nav a {
  color: var(--muted);
  font-size: 15px;
}

.footer-nav a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  color: var(--muted);
  font-size: 13px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(0, 0, 0, .68);
}

.modal-card {
  width: min(620px, 94vw);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-strong);
  background: var(--panel);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.modal-head h3 {
  margin: 0;
  font-size: 26px;
}

.modal-sub {
  margin: 0;
  padding: 16px 18px 0;
  color: var(--muted);
  line-height: 1.5;
}

.heal-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
  padding: 18px;
  overflow: auto;
}

.heal-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  border: 1px solid var(--line);
  padding: 13px;
}

.heal-item input {
  margin-top: 4px;
  accent-color: var(--bad);
}

.hi-obj {
  font-weight: 900;
}

.hi-src {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.heal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.heal-tag {
  border: 1px solid var(--bad);
  padding: 3px 7px;
  color: var(--bad);
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 18px;
  border-top: 1px solid var(--line);
}

.enroll-card {
  width: min(560px, 94vw);
}

.enroll-form {
  padding: 18px;
}

.enroll-form label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.enroll-input {
  border: 1px solid var(--line);
}

.enroll-input input {
  min-height: 58px;
  padding: 0 18px;
}

.enroll-input button {
  min-width: 130px;
  border: 0;
  border-left: 1px solid var(--line);
  color: var(--bg);
  background: var(--text);
}

.enroll-error {
  margin: 12px 0 0;
  color: var(--bad);
  font-size: 12px;
  line-height: 1.45;
}

.curriculum-card {
  width: min(760px, 94vw);
}

#curriculum-json {
  width: 100%;
  min-height: 290px;
  resize: vertical;
  border: 1px solid var(--line);
  outline: 0;
  padding: 16px;
  color: var(--text);
  background: var(--bg);
  font: 12px/1.5 var(--mono);
}

.hidden {
  display: none !important;
}

/* ── Core Demo Animation System ─────────────────────────────────── */

/* Flash — generic accent highlight */
.flash {
  animation: flash .8s ease;
}

@keyframes flash {
  0% {
    color: var(--accent);
  }

  100% {
    color: var(--text);
  }
}

/* Answer text dramatic crossfade — old answer out, new answer in */
.answer-text {
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.answer-text.answer-out {
  opacity: 0;
  transform: translateY(8px) scale(0.97);
}

.answer-text.answer-in {
  animation: answerReveal 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes answerReveal {
  0% {
    opacity: 0;
    transform: translateY(-12px) scale(0.97);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Correction pulse — ripples across the answer card on successful fix */
.answer-card.correction-pulse {
  animation: correctionPulse 0.9s ease;
}

@keyframes correctionPulse {
  0% {
    box-shadow: inset 0 0 0 0 rgba(108, 172, 122, 0);
  }

  30% {
    box-shadow: inset 0 0 0 3px rgba(108, 172, 122, 0.35);
  }

  100% {
    box-shadow: inset 0 0 0 0 rgba(108, 172, 122, 0);
  }
}

/* Answer flag slide-in */
.answer-flag {
  transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.answer-flag.flag-enter {
  animation: flagSlideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes flagSlideIn {
  0% {
    opacity: 0;
    transform: translateX(-10px);
  }

  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Diff card reveal */
.diff-card.diff-reveal {
  animation: diffReveal 0.55s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes diffReveal {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Health score odometer animation */
.health-score-animating {
  transition: color 0.4s ease;
}

/* Health bar sweep glow */
.health-bar i {
  position: relative;
}

.health-bar i.bar-sweep::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 24px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  animation: barSweep 0.8s ease forwards;
}

@keyframes barSweep {
  0% {
    right: 100%;
    opacity: 1;
  }

  100% {
    right: -24px;
    opacity: 0;
  }
}

/* Forget button shake before action */
.forget-btn.confirming {
  animation: shake 0.35s ease;
}

@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  20% {
    transform: translateX(-3px);
  }

  40% {
    transform: translateX(3px);
  }

  60% {
    transform: translateX(-2px);
  }

  80% {
    transform: translateX(2px);
  }
}

/* Belief card dissolve on forget */
.belief.dissolving {
  animation: believeDissolve 0.55s cubic-bezier(0.55, 0, 1, 0.45) forwards;
  pointer-events: none;
}

@keyframes believeDissolve {
  0% {
    opacity: 1;
    transform: scale(1);
  }

  40% {
    opacity: 0.6;
    transform: scale(0.98);
  }

  100% {
    opacity: 0;
    transform: scale(0.92) translateX(10px);
    height: 0;
    padding: 0;
    margin: 0;
    border: 0;
    overflow: hidden;
  }
}

/* Belief card entrance — staggered slide-in */
.belief.entering {
  animation: beliefEnter 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}

@keyframes beliefEnter {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Lifecycle step activation pulse */
.life-step.pulse {
  animation: lifePulse 0.7s ease;
}

@keyframes lifePulse {
  0% {
    box-shadow: inset 0 -3px 0 var(--accent), 0 0 0 0 rgba(90, 167, 255, 0.3);
  }

  50% {
    box-shadow: inset 0 -3px 0 var(--accent), 0 0 0 8px rgba(90, 167, 255, 0);
  }

  100% {
    box-shadow: inset 0 -3px 0 var(--accent), 0 0 0 0 rgba(90, 167, 255, 0);
  }
}

.life-step.done.pulse {
  animation: lifeDonePulse 0.7s ease;
}

@keyframes lifeDonePulse {
  0% {
    box-shadow: 0 0 0 0 rgba(108, 172, 122, 0.4);
  }

  50% {
    box-shadow: 0 0 0 8px rgba(108, 172, 122, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(108, 172, 122, 0);
  }
}

/* Node glow in native graph — blamed nodes get an animated ring */
.native-node.blamed circle {
  animation: blamedGlow 1.5s ease infinite alternate;
}

@keyframes blamedGlow {
  0% {
    filter: drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 40%, transparent));
  }

  100% {
    filter: drop-shadow(0 0 14px color-mix(in srgb, var(--accent) 70%, transparent));
  }
}

/* Contradiction edge pulse */
.native-edge.conflict-pulse {
  animation: conflictPulse 2s ease infinite;
}

@keyframes conflictPulse {

  0%,
  100% {
    stroke-opacity: 1;
  }

  50% {
    stroke-opacity: 0.4;
  }
}

/* Metrics counter flash */
.metrics-row b.counting {
  color: var(--accent);
  transition: color 0.3s ease;
}

/* Health score glow on change */
#health-score.score-up {
  animation: scoreUp 0.8s ease;
}

@keyframes scoreUp {
  0% {
    color: var(--text);
    text-shadow: none;
  }

  40% {
    color: var(--good);
    text-shadow: 0 0 12px rgba(108, 172, 122, 0.5);
  }

  100% {
    text-shadow: none;
  }
}

#health-score.score-down {
  animation: scoreDown 0.8s ease;
}

@keyframes scoreDown {
  0% {
    color: var(--text);
    text-shadow: none;
  }

  40% {
    color: var(--bad);
    text-shadow: 0 0 12px rgba(216, 59, 59, 0.5);
  }

  100% {
    text-shadow: none;
  }
}

/* Hero background animated grid dots */
.hero-grid {
  position: relative;
}

.hero-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 35%, rgba(90, 167, 255, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 65%, rgba(240, 100, 60, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.hero-copy,
.system-card {
  position: relative;
  z-index: 1;
}

/* Loading skeleton shimmer */
.skeleton {
  background: linear-gradient(90deg, var(--panel) 25%, var(--panel-2) 50%, var(--panel) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 2px;
  color: transparent !important;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

/* Answer card status border indicator */
.answer-card {
  position: relative;
  transition: border-color 0.5s ease;
}

.answer-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--line);
  transition: background 0.5s ease;
}

.answer-card.status-bad::after {
  background: linear-gradient(90deg, var(--bad), color-mix(in srgb, var(--bad) 40%, transparent));
}

.answer-card.status-ok::after {
  background: linear-gradient(90deg, var(--good), color-mix(in srgb, var(--good) 40%, transparent));
}

@media (max-width: 1220px) {
  .site-shell {
    width: 100%;
    border-left: 0;
    border-right: 0;
  }

  .topbar {
    grid-template-columns: 1fr auto;
  }

  .navlinks {
    order: 3;
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
    overflow-x: auto;
  }

  .hero-grid,
  .workbench,
  .proof-grid,
  .demo-path,
  .agent-proof,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 44px;
    padding-top: 76px;
  }

  .workbench {
    gap: 16px;
    min-height: 0;
    height: auto;
  }

  .case-column>*,
  .graph-column>*,
  .report-column>* {
    border-right: 0;
  }

  #graph,
  .native-graph {
    height: 626px;
    min-height: 626px;
  }

  .proof-grid article,
  .demo-path div,
  .agent-proof article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-grid article:last-child,
  .demo-path div:last-child,
  .agent-proof article:last-child {
    border-bottom: 0;
  }

  .demo-path div:not(:last-child)::after {
    content: "";
    display: none;
  }

  .site-footer {
    padding-left: 28px;
    padding-right: 28px;
  }

  .footer-main {
    gap: 36px;
  }

}

@media (max-width: 760px) {
  body {
    background: var(--bg);
  }

  .site-shell {
    width: 100vw;
    max-width: 100vw;
  }

  .topbar {
    width: 100vw;
    overflow: hidden;
  }

  .navlinks {
    width: 100vw;
    min-width: 0;
    padding: 0 14px;
    overflow-x: auto;
  }

  .navlinks a {
    flex: 0 0 auto;
  }

  .window-bar .text-action {
    display: none;
  }

  .overline {
    font-size: 11px;
    line-height: 1.6;
  }

  .brand {
    padding: 0 14px;
    border-right: 0;
  }

  .brand small {
    display: none;
  }

  .header-actions {
    gap: 6px;
    padding-right: 10px;
  }

  #install-btn span,
  #reset-btn span {
    display: none;
  }

  .status-pill {
    display: none;
  }

  .hero-grid,
  .workbench,
  .about-view,
  .site-footer {
    padding-left: 14px;
    padding-right: 14px;
  }

  .about-view {
    padding-top: 28px;
  }

  .about-hero {
    padding-top: 18px;
    padding-bottom: 44px;
    margin-bottom: 24px;
  }

  .headline-band {
    margin-left: 14px;
    margin-right: 14px;
  }

  .hero-grid {
    display: block;
  }

  .hero-copy,
  .system-card {
    width: 100%;
    max-width: calc(100vw - 28px);
    overflow: hidden;
  }

  .hero-copy h1,
  .about-hero h1 {
    font-size: clamp(42px, 13vw, 56px);
  }

  .hero-text,
  .about-hero p:last-child {
    font-size: 16px;
    max-width: 34ch;
    overflow-wrap: anywhere;
  }

  .hero-actions {
    margin-bottom: 44px;
  }

  .cockpit-grid,
  .storage-grid,
  .health-breakdown,
  .controls,
  .metrics-row,
  .lifecycle,
  .diff-grid,
  .legend,
  .about-grid,
  .proof-grid,
  .demo-path,
  .agent-proof {
    grid-template-columns: 1fr;
  }

  .cockpit-grid div,
  .storage-grid div,
  .health-breakdown span,
  .controls button,
  .metrics-row div,
  .life-step,
  .about-grid article,
  .proof-grid article,
  .demo-path div,
  .agent-proof article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  #graph,
  .native-graph {
    height: 486px;
    min-height: 486px;
  }

  .footer-cta {
    margin-bottom: 54px;
    padding: 34px 18px 22px;
  }

  .footer-command {
    grid-template-columns: 1fr;
  }

  .footer-command code {
    min-height: 58px;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .copy-command {
    width: 100%;
    border-left: 0;
    border-top: 1px solid #c9c5ba;
  }

  .footer-buttons {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .footer-main {
    padding: 42px 0;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .tabs span:not(.active) {
    display: none;
  }

  .ask-box,
  .teach-box {
    grid-template-columns: 1fr;
  }

  #ask-btn,
  #teach-btn {
    min-height: 48px;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}


/* ---------- design polish pass (2026-07-04): decongest + readable graph ---------- */

/* Preserve the original visual style, but give the real app controls enough room. */
#app-view .workbench {
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding-inline: clamp(18px, 3vw, 44px);
}

#app-view .case-column,
#app-view .graph-column,
#app-view .report-column {
  width: 100%;
}

#app-view .case-column {
  display: grid;
  grid-template-columns: minmax(260px, .54fr) minmax(460px, 1fr);
  align-items: stretch;
  overflow: visible;
}

#app-view .case-column .health-panel,
#app-view .case-column .command-panel,
#app-view .case-column .answer-card {
  border: 0;
}

#app-view .case-column .health-panel {
  border-right: 1px solid var(--line);
}

#app-view .case-column .command-panel {
  min-width: 0;
}

#app-view .case-column #ask-card {
  grid-column: 1 / -1;
  border-top: 1px solid var(--line);
}

#app-view .graph-panel {
  border-bottom: 0;
}

#app-view #graph {
  height: min(72vh, 760px);
  min-height: 620px;
}

#app-view .report-column {
  overflow: visible;
}

#app-view .report-scroll-container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: visible;
}

#app-view .report-scroll-container > * {
  min-width: 0;
}

#app-view .report-scroll-container .restore-card,
#app-view .report-scroll-container .legend,
#app-view .report-scroll-container .timeline-panel {
  border-top: 0;
  border-bottom: 1px solid var(--line);
}

#app-view .report-scroll-container > *:nth-child(odd) {
  border-right: 1px solid var(--line);
}

#app-view .report-scroll-container .restore-card pre {
  max-height: none;
}

#app-view .ask-box {
  grid-template-columns: minmax(0, 1fr) minmax(104px, auto);
}

#ask-input,
#class-ask-input {
  min-height: 48px;
  padding: 0 14px;
  color: var(--text);
  background: transparent;
  border: 0;
  outline: 0;
  font: inherit;
  min-width: 0;
}

#ask-input::placeholder,
#class-ask-input::placeholder {
  color: var(--faint);
}

#student-select {
  min-height: 34px;
  max-width: 180px;
  border: 1px solid var(--line-strong);
  padding: 0 28px 0 10px;
  color: var(--text);
  background: var(--paper);
  font: inherit;
  outline: 0;
}

#student-select:focus,
#ask-input:focus,
#class-ask-input:focus {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.quiz-area {
  padding: clamp(18px, 2vw, 26px);
  border-bottom: 1px solid var(--line);
}

.quiz-concept {
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.quiz-question {
  max-width: 820px;
  margin-top: 10px;
  color: var(--text);
  font-size: clamp(16px, 1.3vw, 20px);
  line-height: 1.55;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.quiz-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.quiz-options button {
  min-height: 52px;
  border: 1px solid var(--line);
  padding: 12px 14px;
  color: var(--text);
  background: color-mix(in srgb, var(--paper) 86%, var(--panel));
  font: inherit;
  font-size: 13px;
  line-height: 1.35;
  text-align: left;
  cursor: pointer;
  overflow-wrap: anywhere;
}

.quiz-options button:hover:not(:disabled) {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, var(--paper));
}

.quiz-options button:disabled {
  cursor: default;
  opacity: .76;
}

.quiz-options button.correct {
  border-color: var(--good);
  color: var(--text);
  background: color-mix(in srgb, var(--good) 18%, var(--paper));
  opacity: 1;
}

.quiz-options button.wrong {
  border-color: var(--bad);
  color: var(--text);
  background: color-mix(in srgb, var(--bad) 16%, var(--paper));
  opacity: 1;
}

.quiz-feedback {
  margin-top: 14px;
  border-left: 3px solid var(--accent);
  padding: 12px 14px;
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  font-size: 13px;
  line-height: 1.5;
}

.quiz-feedback.good {
  border-left-color: var(--good);
  background: color-mix(in srgb, var(--good) 9%, transparent);
}

.quiz-feedback.bad {
  border-left-color: var(--bad);
  background: color-mix(in srgb, var(--bad) 9%, transparent);
}

#quiz-start {
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  margin-top: 16px !important;
  border: 0;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: none;
}

.system-card .window-bar .student-pick {
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.system-card .window-bar .text-action {
  padding: 0 2px;
  white-space: nowrap;
}

/* 4 lifecycle steps, not 5 columns with a dead cell */
#app-view .lifecycle { grid-template-columns: repeat(4, 1fr); }
.life-step { min-height: 70px; padding: 14px 18px; }
.life-step b { margin-bottom: 7px; font-size: 15px; }

/* signal key swatches: solid band colors instead of white-outlined dark boxes */
.key.gap { background: var(--bad); border-color: var(--bad); }
.key.learning { background: var(--warn); border-color: var(--warn); }
.key.mastered { background: var(--good); border-color: var(--good); }
.key.rusty { background: #9a7c48; border-color: #9a7c48; }

/* 4-way mastery breakdown, tighter than the Track A 3-way */
.health-breakdown.four { grid-template-columns: repeat(4, 1fr); }
.health-breakdown.four span { min-height: 56px; padding: 10px 12px; }

/* give the report column room to breathe */
.report-scroll-container .restore-card pre { white-space: pre-wrap; line-height: 1.6; }

@media (max-width: 980px) {
  #app-view .case-column,
  #app-view .report-scroll-container {
    grid-template-columns: 1fr;
  }

  #app-view .case-column .health-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  #app-view .report-scroll-container > *:nth-child(odd) {
    border-right: 0;
  }

  #app-view #graph {
    height: 560px;
    min-height: 560px;
  }
}

@media (max-width: 640px) {
  .quiz-options {
    grid-template-columns: 1fr;
  }

  .window-bar {
    flex-wrap: wrap;
    padding-block: 10px;
  }

  .window-bar .student-pick {
    width: 100%;
    justify-content: space-between;
  }

  #student-select {
    max-width: none;
    flex: 1;
  }
}

/* ---------- mobile demo-friendliness (teacher on a phone) ---------- */

@media (max-width: 1220px) {
  .workbench.two { grid-template-columns: 1fr; }
  #teacher-graph { height: 520px; min-height: 520px; }
}

@media (max-width: 760px) {
  /* Track A hides window-bar text-actions on phones; ours are load-bearing */
  .window-bar #back-to-class,
  .window-bar #enroll-btn,
  .window-bar #refresh-cockpit { display: inline-flex; }

  /* our reset/retire are labeled controls, not topbar icons */
  #reset-btn span,
  #retire-btn span { display: inline; }

  #graph, #teacher-graph, .native-graph { height: 440px; min-height: 440px; }

  .quiz-options button { font-size: 12.5px; padding: 10px 12px; }
  .teach-next { padding-left: 28px; }
}

/* ---------- architecture data-flow diagram + teacher graph repair ---------- */

.teach-next-row small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.premium-diagram {
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent 36%),
    var(--panel);
}

.diag-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}

.diag-summary div {
  min-height: 132px;
  padding: 22px;
  border-right: 1px solid var(--line);
}

.diag-summary div:last-child {
  border-right: 0;
}

.diag-summary b,
.diag-loop b {
  display: block;
  color: var(--text);
  font-size: 18px;
  line-height: 1.1;
}

.diag-summary span,
.diag-loop span {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.flow-map {
  display: grid;
  grid-template-columns: minmax(230px, .82fr) 120px minmax(280px, 1fr) minmax(260px, .92fr) minmax(260px, .92fr);
  grid-template-areas:
    "browser rest api split split"
    "browser rest api ledger cloud"
    "output return return ledger cloud";
  gap: 18px;
  padding: 24px;
  align-items: stretch;
}

.browser-node { grid-area: browser; }
.api-node { grid-area: api; }
.ledger-node { grid-area: ledger; }
.cloud-node { grid-area: cloud; }
.output-node { grid-area: output; }
.edge-rest { grid-area: rest; }
.edge-return { grid-area: return; }
.flow-split { grid-area: split; }

.flow-node {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.diag-header {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-bottom: 0;
  padding: 0 14px;
  color: var(--text);
  background: color-mix(in srgb, var(--paper) 70%, var(--panel));
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.diag-header span {
  color: var(--accent);
}

.diag-box {
  flex: 1;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  min-height: 210px;
  border: 1px solid var(--line);
  padding: 18px;
  background: var(--paper);
}

.diag-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}

.diag-icon svg {
  width: 20px;
  height: 20px;
}

.diag-info h4 {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 20px;
  line-height: 1.15;
}

.diag-info p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.diag-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 15px;
}

.diag-badges span,
.mini-endpoints {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border: 1px solid var(--line);
  padding: 3px 7px;
  color: var(--muted);
  background: var(--panel);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.mini-endpoints {
  margin-top: 15px;
  color: var(--accent);
  overflow-wrap: anywhere;
}

.glow-blue .diag-icon,
.glow-blue .diag-badges span {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--line));
}

.glow-orange .diag-icon,
.glow-orange .diag-badges span,
.glow-orange .mini-endpoints {
  border-color: color-mix(in srgb, var(--warn) 48%, var(--line));
}

.glow-green .diag-icon,
.glow-green .diag-badges span {
  border-color: color-mix(in srgb, var(--good) 48%, var(--line));
}

.flow-edge {
  position: relative;
  min-height: 86px;
  display: grid;
  align-content: center;
  justify-items: center;
  border: 1px dashed var(--line-strong);
  padding: 14px 12px;
  text-align: center;
  background: color-mix(in srgb, var(--panel) 75%, transparent);
}

.flow-edge::before,
.flow-edge::after {
  content: "";
  position: absolute;
  background: var(--accent);
}

.edge-rest::before {
  top: 50%;
  left: -18px;
  right: -18px;
  height: 2px;
}

.edge-rest::after {
  top: calc(50% - 5px);
  right: -20px;
  width: 10px;
  height: 10px;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

.edge-return::before {
  top: 50%;
  left: -18px;
  right: -18px;
  height: 2px;
  background: var(--good);
}

.edge-return::after {
  top: calc(50% - 5px);
  left: -20px;
  width: 10px;
  height: 10px;
  background: var(--good);
  clip-path: polygon(100% 0, 0 50%, 100% 100%);
}

.flow-edge b {
  position: relative;
  z-index: 1;
  color: var(--text);
  font-size: 13px;
  line-height: 1.2;
}

.flow-edge span {
  position: relative;
  z-index: 1;
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
}

.flow-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.edge-ledger,
.edge-cloud {
  min-height: 94px;
}

.edge-ledger::before,
.edge-cloud::before {
  top: -18px;
  left: 50%;
  width: 2px;
  height: 18px;
}

.edge-ledger::after,
.edge-cloud::after {
  top: -2px;
  left: calc(50% - 5px);
  width: 10px;
  height: 10px;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.edge-cloud::before,
.edge-cloud::after {
  background: var(--good);
}

.diag-loop {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.diag-loop div {
  min-height: 120px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
}

.diag-loop div:last-child {
  border-right: 0;
  border-bottom: 1px solid var(--line);
}

.diag-loop div:nth-last-child(-n + 3) {
  border-bottom: 0;
}

#teacher-view .workbench.two {
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding-inline: clamp(18px, 3vw, 44px);
}

#teacher-view .case-column,
#teacher-view .graph-column {
  width: 100%;
}

#teacher-view .case-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  border: 0;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}

#teacher-view .case-column .command-panel {
  min-width: 0;
  overflow: hidden;
}

#teacher-view .case-column .command-panel:first-child .window-bar {
  min-height: 64px;
}

#teacher-view .case-column .student-pick {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

#teacher-view .case-column .student-pick code {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  white-space: nowrap;
}

#teacher-view .ask-box {
  grid-template-columns: minmax(0, 1fr) minmax(116px, auto);
}

#teacher-view #class-ask-card {
  border-top: 1px solid var(--line) !important;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 5%, transparent), transparent 120px),
    color-mix(in srgb, var(--panel) 86%, var(--paper));
}

#teacher-view #class-ask-answer {
  max-height: 440px;
  min-height: 180px;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 22px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.7;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) color-mix(in srgb, var(--panel) 86%, transparent);
}

#teacher-view #class-ask-answer::-webkit-scrollbar,
#teacher-view .intervention-card::-webkit-scrollbar,
.modal-card::-webkit-scrollbar,
.report-body::-webkit-scrollbar,
#curriculum-json::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

#teacher-view #class-ask-answer::-webkit-scrollbar-track,
#teacher-view .intervention-card::-webkit-scrollbar-track,
.modal-card::-webkit-scrollbar-track,
.report-body::-webkit-scrollbar-track,
#curriculum-json::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--panel) 72%, transparent);
}

#teacher-view #class-ask-answer::-webkit-scrollbar-thumb,
#teacher-view .intervention-card::-webkit-scrollbar-thumb,
.modal-card::-webkit-scrollbar-thumb,
.report-body::-webkit-scrollbar-thumb,
#curriculum-json::-webkit-scrollbar-thumb {
  border: 2px solid color-mix(in srgb, var(--panel) 72%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 72%, var(--line-strong));
}

#teacher-view #class-ask-answer::-webkit-scrollbar-thumb:hover,
#teacher-view .intervention-card::-webkit-scrollbar-thumb:hover,
.modal-card::-webkit-scrollbar-thumb:hover,
.report-body::-webkit-scrollbar-thumb:hover,
#curriculum-json::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.recall-heading {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.recall-student,
.recall-note,
.recall-paragraph {
  margin: 0 0 12px;
  border: 1px solid var(--line);
  padding: 15px 16px;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
}

.recall-student {
  display: grid;
  grid-template-columns: minmax(90px, .16fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.recall-student h4 {
  margin: 0;
  color: var(--text);
  font-size: 16px;
  line-height: 1.2;
}

.recall-student h4::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--good);
}

.recall-student p,
.recall-paragraph {
  color: var(--text);
}

.recall-student p {
  margin: 0;
  overflow-wrap: anywhere;
}

.recall-note {
  border-left: 3px solid var(--accent);
  color: var(--text);
}

.recall-empty {
  color: var(--muted);
}

.recall-student strong,
.recall-note strong,
.recall-paragraph strong {
  color: var(--text);
}
}

#teacher-view .teach-next {
  counter-reset: teach-next;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

#teacher-view .teach-next li {
  counter-increment: teach-next;
  min-width: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 82%, var(--paper));
}

#teacher-view .teach-next li:nth-child(3n) {
  border-right: 0;
}

#teacher-view .teach-next-row {
  min-height: 190px;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 16px;
  padding: 22px;
}

#teacher-view .teach-next-row > span {
  position: relative;
  display: block;
  min-width: 0;
  padding-left: 38px;
  color: var(--text);
  font-size: 18px;
  font-weight: 900;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

#teacher-view .teach-next-row > span::before {
  content: counter(teach-next, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 1px;
}

#teacher-view .teach-next-row .pct {
  color: var(--bad);
}

#teacher-view .teach-next-row small {
  max-width: 100%;
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.55;
  text-transform: none;
}

#teacher-view .assign-review {
  justify-self: start;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  padding: 0 18px;
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

#teacher-view .assign-review:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

#teacher-view .intervention-card {
  max-height: 360px;
  overflow: auto;
  padding: 22px;
  color: var(--text);
  background: color-mix(in srgb, var(--bg) 86%, var(--panel));
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

#teacher-view .intervention-card b,
#teacher-view .intervention-card span {
  display: block;
  max-width: 920px;
  overflow-wrap: anywhere;
}

#teacher-view .intervention-card b {
  font-size: 18px;
  line-height: 1.35;
}

#teacher-view .intervention-card span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

#teacher-view .intervention-card ul {
  columns: 2;
  column-gap: 36px;
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--text);
  font-size: 13px;
  line-height: 1.7;
}

#teacher-view .cockpit-students {
  max-height: 300px;
}

#teacher-graph {
  position: relative;
  flex: none;
  height: 760px;
  min-height: 760px;
  overflow: hidden;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    color-mix(in srgb, var(--bg) 88%, var(--panel));
  background-size: 76px 76px;
}

#teacher-graph .vis-network {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: auto !important;
  height: auto !important;
}

#teacher-graph canvas {
  display: block;
}

@media (max-width: 1220px) {
  .diag-summary,
  .flow-map,
  .flow-split,
  .diag-loop {
    grid-template-columns: 1fr;
  }

  .flow-map {
    grid-template-areas:
      "browser"
      "rest"
      "api"
      "split"
      "ledger"
      "cloud"
      "return"
      "output";
  }

  .diag-summary div,
  .diag-loop div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .diag-summary div:last-child,
  .diag-loop div:last-child {
    border-bottom: 0;
  }

  .edge-rest::before,
  .edge-return::before,
  .edge-ledger::before,
  .edge-cloud::before {
    top: -18px;
    left: 50%;
    right: auto;
    width: 2px;
    height: 18px;
  }

  .edge-rest::after,
  .edge-return::after,
  .edge-ledger::after,
  .edge-cloud::after {
    top: -2px;
    left: calc(50% - 5px);
    right: auto;
    width: 10px;
    height: 10px;
    clip-path: polygon(0 0, 100% 0, 50% 100%);
  }

  #teacher-view .workbench.two {
    grid-template-columns: 1fr;
  }

  #teacher-view .teach-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #teacher-view .teach-next li:nth-child(3n) {
    border-right: 1px solid var(--line);
  }

  #teacher-view .teach-next li:nth-child(2n) {
    border-right: 0;
  }

  #teacher-graph {
    height: 640px;
    min-height: 640px;
  }
}

@media (max-width: 760px) {
  .flow-map {
    gap: 14px;
    padding: 14px;
  }

  .diag-summary div,
  .diag-box,
  .diag-loop div {
    padding: 16px;
  }

  .diag-box {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  #teacher-graph {
    height: 560px;
    min-height: 560px;
  }

  .teach-next-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  #teacher-view .teach-next {
    grid-template-columns: 1fr;
  }

  #teacher-view .teach-next li,
  #teacher-view .teach-next li:nth-child(2n),
  #teacher-view .teach-next li:nth-child(3n) {
    border-right: 0;
  }

  .assign-review {
    width: 100%;
  }

  #teacher-view .intervention-card ul {
    columns: 1;
  }

  #teacher-view .cockpit-students button {
    align-items: flex-start;
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .intervention-card {
    padding: 14px 16px;
  }
}

/* class setup modal textarea */
.enroll-form textarea {
  width: 100%;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  color: var(--text);
  font: inherit;
  padding: 10px 12px;
  margin-bottom: 10px;
  resize: vertical;
  outline: 0;
}
.enroll-form textarea:focus { border-color: var(--accent); }

/* ---------- long-form recall answers: prose, not Track A headline style ---------- */

#ask-answer,
#class-ask-answer {
  min-height: 0;
  max-height: 340px;
  overflow-y: auto;
  padding: 16px 18px;
  font-size: 13.5px;
  line-height: 1.7;
  font-weight: 500;
  color: var(--text);
  white-space: pre-wrap;
}

#ask-answer b,
#class-ask-answer b { color: var(--accent); font-weight: 800; }

#ask-answer code,
#class-ask-answer code { font-size: 12.5px; }

/* columns keep their own height; one long card must not stretch its neighbors */
.workbench.two .case-column,
.workbench.two .graph-column { align-self: start; }

/* ---------- inline graph legend (both student + teacher graphs) ---------- */
.graph-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  padding: 9px 14px;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 82%, var(--paper));
  font-size: 11.5px;
  color: var(--muted);
}
.graph-legend span { display: inline-flex; align-items: center; gap: 6px; }
.graph-legend .lg {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
  flex: 0 0 auto;
}
.graph-legend .lg.gap { background: #e04b4b; }
.graph-legend .lg.learning { background: #f0b25a; }
.graph-legend .lg.mastered { background: #7cc48c; }
.graph-legend .lg.rusty { background: #9a7c48; }
.graph-legend .lg-note { color: var(--faint); margin-left: auto; }
@media (max-width: 760px) { .graph-legend .lg-note { display: none; } }

/* ---------- teaching plan (graph-reasoned pedagogy, teacher hero card) ---------- */
.plan-headline {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
  color: var(--text);
  font-size: 13.5px;
  line-height: 1.55;
  font-weight: 600;
}
.teaching-plan { list-style: none; margin: 0; padding: 0; counter-reset: none; }
.teaching-plan li { border-bottom: 1px solid var(--line); }
.teaching-plan li:last-child { border-bottom: 0; }
.plan-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
}
.plan-main { min-width: 0; }
.plan-main b { display: block; font-size: 13.5px; margin-bottom: 4px; }
.plan-main small { display: block; color: var(--muted); font-size: 12px; line-height: 1.5; }
.plan-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 7px; }
.plan-tags em {
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--good);
  border: 1px solid var(--line-strong);
  padding: 2px 6px;
}
.plan-tags em.blocked { color: var(--warn); }
.plan-row .assign-review {
  flex: 0 0 auto;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}
.plan-row .assign-review:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- learning timeline (memory over time) ---------- */
.controls.three { grid-template-columns: 1fr 1fr 1fr; }
.mini-note { color: var(--faint); font-size: 11px; font-weight: 400; letter-spacing: 0; text-transform: none; }
.learning-timeline { padding: 6px 0; max-height: 260px; overflow-y: auto; }
.tl-empty { padding: 12px 16px; color: var(--muted); font-size: 12.5px; line-height: 1.5; }
.tl-row {
  display: flex;
  gap: 12px;
  padding: 8px 16px;
  border-left: 2px solid var(--line-strong);
  margin-left: 14px;
  position: relative;
}
.tl-row::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 13px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-strong);
}
.tl-row.good::before { background: var(--good); }
.tl-row.bad::before { background: #9a7c48; }
.tl-row.amber::before { background: var(--warn); }
.tl-row.muted::before { background: var(--faint); }
.tl-when { flex: 0 0 84px; color: var(--faint); font-size: 11.5px; padding-top: 1px; }
.tl-what { font-size: 12.5px; color: var(--muted); line-height: 1.4; }
.tl-what b { color: var(--text); }
.tl-row.bad .tl-what { color: #b89355; }

/* ---------- report card body ---------- */
#report-modal .modal-card {
  width: min(760px, 94vw);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 6%, transparent), transparent 160px),
    var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .42);
}

#report-modal .modal-head {
  padding: 22px 24px;
}

#report-modal .modal-head h3 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0;
}

#report-modal .modal-sub {
  margin: 0 24px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 14px 16px;
  color: var(--muted);
  background: color-mix(in srgb, var(--bg) 62%, transparent);
  font-size: 14px;
}

.report-body {
  max-height: min(52vh, 520px);
  margin: 18px 24px 24px;
  overflow: auto;
  border: 1px solid var(--line);
  padding: 20px 22px;
  color: var(--text);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  font-size: clamp(16px, 1.7vw, 19px);
  font-weight: 600;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) color-mix(in srgb, var(--panel) 86%, transparent);
}

.proof-grid img,
.agent-proof img {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--bg);
  filter: saturate(.9) contrast(1.04);
}

.proof-grid figure,
.agent-proof figure {
  margin: 0;
}

.proof-grid figcaption,
.agent-proof figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

@media (max-width: 760px) {
  .recall-student {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  #report-modal .modal-sub,
  .report-body {
    margin-inline: 16px;
  }
}