:root {
  color-scheme: dark;
  --chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23b8b8b8' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  --bg: #000000;
  --surface: #080808;
  --surface-2: #101010;
  --line: #252525;
  --line-strong: #6b6b6b;
  --text: #f5f5f5;
  --text-2: #b8b8b8;
  --text-3: #949494;
  --accent: #9b7bff;
  --live: #73f5c2;
  --warn: #f5c273;
  --glow: #252525;
  --shadow: 0 20px 80px #0003;
}
.probe-arms {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin: 26px 0;
}
.probe-arms article {
  padding: 16px 0 0;
  border-top: 1px solid var(--line-strong);
}
.probe-arms h2 {
  font-family: "IBM Plex Mono", monospace;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  font-size: 26px;
  margin: 4px 0 8px;
}
.maturity-ladder li {
  margin-bottom: 18px;
}
.rollout-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 16px;
  margin: 20px 0;
}
.rollout-controls label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}
.rollout-controls input,
.rollout-controls select {
  max-width: 220px;
  padding: 10px;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
}
.rollout-panels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
#rollout-chart {
  width: 100%;
  height: 210px;
  margin: 12px 0;
}
#rollout {
  margin-top: 24px;
}
@media (max-width: 700px) {
  .probe-arms,
  .rollout-panels {
    grid-template-columns: 1fr;
  }
}
html[data-theme="light"] {
  color-scheme: light;
  --chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23525252' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  --bg: #fafafa;
  --surface: #fff;
  --surface-2: #f0f0f0;
  --line: #dddddd;
  --line-strong: #858585;
  --text: #171717;
  --text-2: #525252;
  --text-3: #606060;
  --accent: #7050cb;
  --live: #157d60;
  --warn: #936015;
  --glow: #e5e5e5;
  --shadow: 0 20px 80px #25252510;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 95px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 "IBM Plex Sans",
    system-ui,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}
button,
input,
select {
  font: inherit;
}
button,
a,
input,
summary,
select {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
  color: inherit;
  background: none;
  border: 0;
}
button:disabled {
  opacity: 0.45;
  cursor: default;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  color: var(--accent);
}
[hidden] {
  display: none !important;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  font-weight: 500;
  line-height: 1.17;
  letter-spacing: -0.02em;
}
h1 {
  font-size: 40px;
}
h2 {
  font-size: 30px;
}
h3 {
  font-size: 20px;
}
p {
  color: var(--text-2);
}
:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 4px;
}
/* Headings receive focus from script after navigation; they are not controls. */
h1[tabindex="-1"]:focus,
h2[tabindex="-1"]:focus {
  outline: none;
}
.mono,
.eyebrow,
.badge,
.tag,
.step-number,
dt {
  font-family: "IBM Plex Mono", monospace;
}
.eyebrow {
  font-size: 13px;
  letter-spacing: 0;
  color: var(--text-3);
  font-weight: 400;
}
.small {
  font-size: 12px;
}
.muted {
  color: var(--text-3);
}
.text-link {
  color: var(--accent);
  font-size: 13px;
}
.skip {
  position: fixed;
  top: -80px;
  left: 20px;
  background: var(--surface-2);
  color: var(--bg);
  padding: 10px;
  z-index: 100;
}
.skip:focus {
  top: 10px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  border-radius: 7px;
  padding: 13px 21px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid var(--line-strong);
  transition: background 0.15s,
    transform 0.15s;
  min-height: 44px;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn.primary {
  background: var(--surface-2);
  color: var(--accent);
  border-color: var(--line-strong);
  font-weight: 600;
}
.btn.primary:hover {
  background: #242424;
}
html[data-theme="light"] .btn.primary {
  color: var(--accent);
}
html[data-theme="light"] .btn.primary:hover {
  background: #e5e5e5;
}
.btn.secondary {
  border-color: var(--line-strong);
  background: var(--surface);
}
.btn.small {
  padding: 8px 13px;
  font-size: 12px;
}
.icon-btn {
  border: 1px solid var(--line);
  border-radius: 6px;
  min-width: 40px;
  height: 40px;
  font-size: 18px;
  display: inline-grid;
  place-items: center;
  color: var(--text-2);
}
.icon-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
}
.icon-btn:hover {
  background: var(--surface-2);
}
.tag,
.badge {
  display: inline-block;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 3px 6px;
  vertical-align: middle;
  font-size: 12px;
  letter-spacing: 0;
  font-weight: 400;
  line-height: 1.3;
  color: var(--text-3);
}
.badge {
  color: var(--text-2);
  border-color: var(--line-strong);
  margin-left: 4px;
}
.live-dot,
.dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--live);
  flex: none;
}
.dot {
  background: var(--text-3);
}
.dot.on {
  background: var(--live);
}
.dot.warn {
  background: var(--warn);
}
.topbar {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 4.5%;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  letter-spacing: 0.07em;
  font-weight: 600;
  white-space: nowrap;
  color: var(--accent);
}
.brand svg {
  width: 29px;
  height: 29px;
  color: var(--accent);
}
.topnav,
.top-actions {
  display: flex;
  align-items: center;
  gap: 26px;
}
.topnav {
  font-size: 12px;
  color: var(--text-2);
}
.top-actions {
  gap: 14px;
}
.landing {
  max-width: 1440px;
  margin: auto;
  padding: 0 7%;
}
.hero {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 70px 0 60px;
  min-height: 660px;
}
.hero-copy .eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--live);
  margin-bottom: 26px;
}
/* The headline is the one loud piece of type on the site: large, tight, plain white. */
.hero h1 {
  font-size: clamp(40px, 5.4vw, 76px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.02;
  margin: 0 0 24px;
  max-width: 13ch;
}
.hero-kicker {
  margin: 0 0 20px;
  font-size: 15px;
  color: var(--accent);
}
.hero-description {
  font-size: 18px;
  line-height: 1.6;
  max-width: 34em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 28px 0 32px;
}
.hero-note {
  font-size: 12px;
  color: var(--text-3);
}
.hero-visual {
  position: relative;
  background: radial-gradient(
    ellipse at 50% 45%,
    var(--glow),
    var(--surface) 80%
  );
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.visual-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 19px 21px;
  border-bottom: 1px solid var(--line);
}
.visual-label .mono {
  margin-left: auto;
  color: var(--text-3);
}
.hero-field {
  height: 390px;
  position: relative;
  display: flex;
  justify-content: center;
  padding: 18px;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
}
.hero-field img {
  height: 100%;
  width: auto;
  box-shadow: 0 0 60px #73f5c21a;
  border: 1px solid #fff2;
}
.field-axis {
  position: absolute;
  bottom: 15px;
  left: 20px;
  font-size: 12px;
  color: var(--text-3);
}
.visual-caption {
  padding: 15px 21px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
}
.visual-caption strong {
  font-size: 12px;
  font-weight: 500;
}
.visual-caption span {
  display: block;
  font-size: 12px;
  color: var(--text-3);
  margin-top: 4px;
}
.visual-caption > a {
  font-size: 26px;
  color: var(--accent);
}
.fact-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 29px 0;
}
.fact-strip > div {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}
.fact-strip > div:first-child {
  padding-left: 0;
  border: 0;
}
.fact-strip strong {
  display: block;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.fact-strip span {
  font-size: 12px;
  color: var(--text-3);
}
.landing-section {
  padding: 70px 0;
}
.section-intro {
  max-width: 570px;
  margin-bottom: 32px;
}
.section-intro h2 {
  font-size: 34px;
}
.tier-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.tier-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}
.tier-card:hover {
  color: var(--text);
  border-color: var(--line-strong);
}
.step-number {
  font-size: 12px;
  color: var(--text-3);
}
.tier-card h3 {
  font-size: 21px;
}
.tier-card h3 span {
  float: right;
  color: var(--accent);
}
.tier-card p {
  font-size: 13px;
}
.mini-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 88px;
  margin: 25px 0 28px;
  border-bottom: 1px solid var(--line);
}
.mini-chart i {
  background: linear-gradient(var(--text-3), var(--surface-2));
  width: 8%;
  height: 28%;
  border-radius: 3px 3px 0 0;
}
.mini-chart i:nth-child(2) {
  height: 36%;
}
.mini-chart i:nth-child(3) {
  height: 48%;
}
.mini-chart i:nth-child(4) {
  height: 55%;
}
.mini-chart i:nth-child(5) {
  height: 62%;
}
.mini-chart i:nth-child(6) {
  height: 74%;
}
.mini-chart i:nth-child(7) {
  height: 80%;
}
.mini-chart i:nth-child(8) {
  height: 94%;
}
.frame-diagram {
  height: 88px;
  margin: 25px 0 28px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.frame-diagram i {
  font:
    14px "IBM Plex Mono",
    monospace;
  padding: 18px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  color: var(--text-3);
  background: var(--surface-2);
}
.frame-diagram i:last-child {
  border-color: var(--live);
  color: var(--live);
}
.launch-note {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  border-top: 1px solid var(--line);
}
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  padding: 25px 0 35px;
  font-size: 12px;
  color: var(--text-3);
}
#workspace {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  min-height: calc(100vh - 74px);
}
.sidebar {
  padding: 24px 16px;
  background: var(--bg);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: sticky;
  top: 74px;
  height: calc(100vh - 74px);
}
.sidebar nav,
#mobile-navigation nav {
  display: grid;
  gap: 2px;
}
.nav-group {
  margin: 20px 12px 6px;
  font-size: 12px;
  color: var(--text-3);
}
.sidebar .nav-group:first-child {
  margin-top: 0;
}
.sidebar nav a,
#mobile-navigation nav a {
  display: flex;
  align-items: center;
  color: var(--text-2);
  padding: 8px 12px;
  min-height: 40px;
  border-radius: 6px;
  font-size: 14px;
}
.sidebar nav a:hover,
#mobile-navigation nav a:hover {
  color: var(--text);
  background: var(--surface-2);
}
/* Current page: neutral surface and weight; lilac only on the text. */
.sidebar nav a.active,
#mobile-navigation nav a.active {
  color: var(--accent);
  background: var(--surface-2);
  font-weight: 500;
}
.sidebar-info {
  margin-top: 40px;
  border: 1px solid var(--line);
  padding: 13px;
  border-radius: 7px;
  font-size: 12px;
}
.sidebar-info .eyebrow {
  font-size: 12px;
}
.sidebar-info strong {
  display: block;
  margin: 10px 0;
  font-weight: 500;
}
.sidebar-info p {
  margin-bottom: 5px;
  font-size: 12px;
  overflow-wrap: anywhere;
}
.sidebar-bottom {
  margin-top: auto;
  font-size: 12px;
  color: var(--text-3);
  display: grid;
  gap: 16px;
  padding: 15px 8px;
}
.status {
  display: flex;
  align-items: center;
  gap: 7px;
}
.workspace-content {
  padding: 32px;
  min-width: 0;
  max-width: 1700px;
  width: 100%;
  margin: auto;
}
.page-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 25px;
  margin-bottom: 32px;
}
.page-heading h1 {
  margin: 0 0 10px;
  font-size: clamp(28px,3vw,36px);
  letter-spacing: -0.02em;
}
.page-heading .eyebrow {
  margin-bottom: 12px;
}
.page-heading p:last-child {
  font-size: 16px;
  margin: 0;
}
.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  overflow: hidden;
  box-shadow: none;
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}
.card-head h2 {
  font-size: 13px;
  letter-spacing: -0.01em;
  margin: 0;
}
.card-head h2 .tag {
  margin-left: 9px;
}
.selection-bar {
  display: grid;
  grid-template-columns: 1.3fr 0.85fr 1.15fr 0.8fr auto;
  gap: 16px;
  padding: 0 0 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
  align-items: start;
}
.selection-bar > .btn {
  margin-top: 26px;
}
.selection-bar label {
  font-size: 14px;
  color: var(--text-2);
  min-width: 0;
}
/* One select style everywhere: our own chevron in a reserved 40px gutter, so text
   never runs under it, and long option text ends in an ellipsis. */
select {
  display: block;
  -webkit-appearance: none;
  appearance: none;
  background-color: var(--surface-2);
  background-image: var(--chevron);
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px 8px;
  color: var(--text);
  border: 1px solid var(--line-strong);
  padding: 10px 40px 10px 12px;
  border-radius: 6px;
  max-width: 100%;
  min-height: 44px;
  font-size: 14px;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}
select:hover {
  border-color: var(--text-3);
}
select:disabled {
  opacity: 0.5;
  cursor: default;
}
select option {
  background: var(--surface-2);
  color: var(--text);
}
.selection-bar select {
  width: 100%;
  margin-top: 8px;
}
.selection-bar .btn {
  padding: 10px 14px;
  font-size: 14px;
}
.parametric {
  margin: 32px 0 20px;
}
.parametric summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  font-size: 15px;
}
.parametric summary .tag {
  margin-left: 8px;
}
.parametric-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  border-top: 1px solid var(--line);
  padding: 18px;
}
.parametric-body p {
  margin-bottom: 0;
  font-size: 13px;
}
.parametric-body .btn {
  margin-top: 14px;
}
.dial + .dial {
  margin-top: 15px;
}
.dial .row,
.bounds {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
}
.dial .scale {
  font-size: 12px;
  color: var(--text-3);
}
.bounds {
  font-size: 12px;
  color: var(--text-3);
}
input[type="range"] {
  accent-color: var(--text-2);
  width: 100%;
  height: 16px;
  cursor: pointer;
}
.metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.metric {
  padding: 12px 15px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.metric .k {
  font-size: 12px;
  color: var(--text-2);
}
.metric .f {
  font-size: 12px;
  color: var(--text-3);
  margin: 2px 0 10px;
}
.metric .v {
  font-size: 23px;
  letter-spacing: -0.02em;
}
.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
.dashboard-main {
  min-width: 0;
  display: grid;
  gap: 18px;
}
.current-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 155px;
  padding: 17px;
  gap: 17px;
  align-items: center;
}
.stage {
  min-width: 0;
  min-height: 275px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg);
  border-radius: 5px;
  padding: 13px;
}
.panels {
  max-width: 100%;
}
.view-info p {
  font-size: 13px;
}
.view-info .eyebrow {
  font-size: 12px;
}
.view-tools {
  display: flex;
  gap: 6px;
  margin-top: 24px;
}
.view-tools .icon-btn {
  min-width: 30px;
  width: 30px;
  height: 30px;
  font-size: 18px;
}
.panel {
  min-width: 0;
}
.ptitle {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 9px;
}
.ptitle .s {
  display: block;
  font-size: 12px;
  color: var(--text-3);
  margin-top: 3px;
}
.pbody {
  display: flex;
  align-items: stretch;
  gap: 8px;
  justify-content: center;
}
.frame {
  display: block;
  max-width: 100%;
  border-radius: 3px;
}
.cbar {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  color: var(--text-3);
  font-size: 12px;
  min-width: 52px;
}
.cbar canvas {
  flex: 1;
  min-height: 12px;
  width: 5px;
  margin: 4px 0;
}
.foot {
  padding: 9px 17px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-3);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.comparison {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
  align-items: center;
  padding: 18px;
}
.quality {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.q {
  padding: 12px 10px;
  border-right: 1px solid var(--line);
  min-width: 0;
}
.q:last-child {
  border: 0;
}
.q.selected {
  background: var(--surface-2);
}
.q .k {
  color: var(--text-3);
  font-size: 12px;
  margin-bottom: 4px;
}
.q .v {
  font-size: 18px;
}
.q .s {
  font-size: 12px;
  color: var(--text-3);
}
.comparison-note {
  padding: 0 16px;
  font-size: 12px;
  margin: 12px 0;
}
.empty {
  padding: 38px 20px;
  text-align: center;
  color: var(--text-3);
  font-size: 14px;
}
/* Recent comparisons sit below the scientific figures, never beside them. */
.history-rail {
  margin-top: 32px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.history-rail .card-head {
  padding-left: 0;
  border: 0;
}
.history-rail > .small {
  font-size: 13px;
  margin: 0 0 12px;
}
.history-rail > .btn {
  margin-top: 12px;
}
.run-card {
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  margin-bottom: 10px;
  font-size: 12px;
}
.run-card strong {
  font-weight: 500;
  font-size: 14px;
  display: block;
  margin-bottom: 5px;
}
.run-card p {
  margin: 3px 0;
  font-size: 12px;
}
.run-card img {
  display: block;
  width: 100%;
  border-radius: 3px;
  margin: 10px 0;
  background: #000000;
}
.run-card button {
  font-size: 12px;
  color: var(--accent);
  padding: 7px 0;
}
#recent-runs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.history-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.history-grid .run-card {
  padding: 20px;
}
.history-grid .run-card strong {
  font-size: 15px;
}
.history-grid .run-card p {
  font-size: 13px;
}
#history-detail {
  padding: 24px;
  margin-top: 20px;
}
.history-actions {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
#history-detail img {
  display: block;
  max-width: 100%;
  margin: 20px 0;
}
#history-detail .quality {
  margin: 15px 0;
}
.timeline {
  padding-bottom: 12px;
}
.playback {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 15px 15px 5px;
}
.playback > input {
  margin: 0 15px;
  min-width: 40px;
}
.playback label {
  color: var(--text-3);
  font-size: 12px;
}
.playback select {
  min-height: 36px;
  padding: 6px 34px 6px 10px;
  background-position: right 11px center;
  font-size: 13px;
}
.tl-track {
  display: flex;
  gap: 5px;
  padding: 5px 15px;
}
.tl {
  flex: 1;
  font:
    12px "IBM Plex Mono",
    monospace;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px 3px;
  color: var(--text-3);
}
.tl.on {
  color: var(--accent);
  border-color: var(--line-strong);
}
.timeline > p {
  font-size: 12px;
  margin: 8px 15px 0;
}
.prose {
  font-size: 14px;
  line-height: 1.85;
  max-width: 850px;
}
.prose.card {
  padding: 30px;
  margin-top: 20px;
}
.prose h2 {
  font-size: 27px;
  margin-top: 28px;
}
.prose h2:first-child {
  margin-top: 0;
}
.prose h3 {
  font-size: 18px;
  margin-top: 28px;
}
.prose li {
  padding-left: 6px;
  margin: 12px 0;
  color: var(--text-2);
}
.prose strong {
  color: var(--text);
  font-weight: 500;
}
.prose a {
  color: var(--accent);
}
.prose code {
  font-size: 12px;
  overflow-wrap: anywhere;
}
.article-nav {
  display: flex;
  gap: 26px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  margin: 35px 0;
}
.about-body {
  display: grid;
  grid-template-columns: minmax(0, 780px) 190px;
  gap: 65px;
}
.about .prose section {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.about .prose section:first-child {
  padding-top: 15px;
}
.about .prose h2 {
  margin-top: 16px;
}
.about-aside {
  height: fit-content;
  position: sticky;
  top: 110px;
  padding-top: 20px;
  font-size: 12px;
}
.about-aside h3 {
  font-size: 16px;
  margin-top: 16px;
}
.about-aside p {
  line-height: 2.5;
}
.model-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  padding: 20px 0;
  border-block: 1px solid var(--line);
}
dt {
  font-size: 12px;
  color: var(--text-3);
}
dd {
  margin: 5px 0 0;
}
/* Each system is a page section; its windows are table rows with details on demand. */
.dataset-card {
  padding: 32px 0;
  border-top: 1px solid var(--line);
}
.dataset-card h2 {
  font-size: 24px;
}
.dataset-card .dataset-top {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
.dataset-card p {
  font-size: 15px;
  max-width: 72ch;
}
.dataset-meta {
  display: flex;
  gap: 12px 28px;
  flex-wrap: wrap;
  padding: 14px 0;
  border-block: 1px solid var(--line);
  font-size: 14px;
  color: var(--text-2);
}
.dataset-meta strong {
  font-weight: 500;
  color: var(--text);
}
.sample-table {
  margin-top: 16px;
}
.sample-table td {
  font-size: 14px;
}
.sample-table details summary {
  font-size: 13px;
  margin-top: 4px;
}
.sample-table .times {
  margin: 6px 0 0;
  font: 12px/1.8 "IBM Plex Mono", monospace;
  color: var(--text-2);
}
.wake {
  padding: 16px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface-2);
  margin-bottom: 20px;
  font-size: 12px;
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  align-items: center;
}
.wake p {
  font-size: 12px;
  margin: 0;
}
.wake-bar {
  height: 3px;
  width: 100%;
  background: var(--line);
}
.wake-bar > div {
  height: 100%;
  background: var(--surface-2);
  transition: width 0.4s;
}
.wake > span {
  color: var(--text-3);
  font-size: 12px;
}
#notice {
  padding: 15px 20px;
  border: 1px solid var(--warn);
  border-radius: 7px;
  color: var(--warn);
  background: var(--surface);
  margin-bottom: 20px;
  font-size: 12px;
}
.tour {
  padding: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--surface-2);
  margin-bottom: 18px;
}
.tour h3 {
  margin: 8px 0;
}
.tour p {
  font-size: 12px;
}
.tour > div {
  display: flex;
  align-items: center;
  gap: 15px;
}
.tour-highlight {
  outline: 2px solid var(--line-strong);
  outline-offset: 3px;
}
dialog {
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  max-width: 95vw;
  width: 900px;
  max-height: 93vh;
  padding: 20px;
}
dialog::backdrop {
  background: #000b;
  backdrop-filter: blur(7px);
}
.dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 15px;
}
#dialog-field {
  overflow: auto;
  max-height: 72vh;
  padding: 15px;
  display: flex;
  justify-content: center;
}
#dialog-field.zoomed {
  justify-content: flex-start;
}
dialog > p {
  margin: 10px 0 0;
}
@media (min-width: 1600px) {
  .stage {
    min-height: 380px;
  }
  .hero {
    min-height: 710px;
  }
  .hero-field {
    height: 440px;
  }
}
@media (max-width: 1180px) {
  .hero {
    gap: 35px;
  }
  .hero-actions {
    gap: 18px;
    flex-wrap: wrap;
  }
  .workspace-content {
    padding: 23px 20px;
  }
  .dashboard-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .selection-bar {
    grid-template-columns: 1.3fr 1fr 1fr 0.8fr;
  }
  .selection-bar > .btn {
    grid-column: 1/-1;
    justify-self: end;
  }
  .about-body {
    gap: 30px;
    grid-template-columns: minmax(0, 1fr) 160px;
  }
  .topnav {
    gap: 18px;
  }
}
@media (max-width: 850px) {
  .topnav {
    display: none;
  }
  .topbar {
    height: 66px;
    padding: 0 22px;
  }
  .landing {
    padding: 0 6%;
  }
  .hero {
    grid-template-columns: 1fr 0.8fr;
    min-height: 550px;
    padding: 45px 0;
  }
  .hero h1 {
    font-size: 42px;
  }
  .hero-description {
    font-size: 14px;
  }
  .hero-field {
    height: 320px;
  }
  .hero-note {
    font-size: 12px;
  }
  .hero-actions .text-link {
    font-size: 12px;
  }
  .fact-strip strong {
    font-size: 20px;
  }
  .fact-strip > div {
    padding-left: 18px;
  }
  .fact-strip span {
    font-size: 12px;
  }
  #workspace {
    grid-template-columns: 150px minmax(0, 1fr);
  }
  .sidebar {
    top: 66px;
    height: calc(100vh - 66px);
    padding: 20px 10px;
  }
  .sidebar nav a {
    font-size: 12px;
    gap: 7px;
    padding: 8px;
  }
  .sidebar-info {
    padding: 10px;
  }
  .workspace-content {
    padding: 20px 15px;
  }
  .page-heading h1 {
    font-size: 28px;
  }
  .page-heading {
    align-items: flex-start;
  }
  .page-heading > .btn {
    font-size: 12px;
  }
  .selection-bar {
    grid-template-columns: 1fr 1fr;
  }
  .parametric-body {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .current-layout {
    grid-template-columns: 1fr;
    padding: 13px;
  }
  .view-info {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
  }
  .view-info p {
    margin: 0;
  }
  .view-info .eyebrow {
    display: none;
  }
  .view-info .view-tools {
    margin: 0;
  }
  .comparison {
    gap: 10px;
    padding: 12px;
  }
  .quality {
    grid-template-columns: 1fr 1fr;
  }
  .q {
    border-bottom: 1px solid var(--line);
  }
  .q:nth-child(2) {
    border-right: 0;
  }
  .about-body {
    display: block;
  }
  .about-aside {
    display: none;
  }
  .article-nav {
    gap: 15px;
    flex-wrap: wrap;
    font-size: 12px;
  }
  .history-grid {
    grid-template-columns: 1fr 1fr;
  }
  .prose.card {
    padding: 22px;
  }
}
@media (max-width: 600px) {
  .topbar {
    padding: 0 16px;
    gap: 10px;
  }
  .brand {
    font-size: 13px;
    gap: 7px;
  }
  .brand .badge {
    display: none;
  }
  .top-actions {
    gap: 8px;
  }
  .top-actions .btn {
    padding: 8px 10px;
    font-size: 12px;
  }
  .hero {
    grid-template-columns: 1fr;
    gap: 25px;
    padding: 42px 0;
  }
  .hero h1 {
    font-size: 48px;
  }
  .hero-description {
    font-size: 15px;
  }
  .hero-actions {
    margin: 25px 0 16px;
  }
  .hero-visual {
    max-width: 100%;
  }
  .hero-field {
    height: 310px;
  }
  .fact-strip {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    padding: 23px 0;
  }
  .fact-strip > div:nth-child(3) {
    padding-left: 0;
    border: 0;
  }
  .tier-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .tier-card {
    padding: 20px;
  }
  .landing-section {
    padding: 45px 0;
  }
  .section-intro h2 {
    font-size: 29px;
  }
  .launch-note {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  footer {
    flex-wrap: wrap;
    gap: 15px;
  }
  #workspace {
    display: block;
  }
  .sidebar {
    position: sticky;
    top: 66px;
    height: auto;
    padding: 8px 10px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    z-index: 15;
  }
  .sidebar > .eyebrow,
  .sidebar-info,
  .sidebar-bottom {
    display: none;
  }
  .sidebar nav {
    display: flex;
    overflow: auto;
    gap: 5px;
  }
  .sidebar nav a {
    white-space: nowrap;
    gap: 5px;
    padding: 6px 10px;
  }
  .sidebar nav a span {
    font-size: 14px;
    width: 14px;
  }
  .workspace-content {
    padding: 24px 13px 40px;
  }
  .page-heading {
    flex-wrap: wrap;
    gap: 14px;
  }
  .page-heading h1 {
    font-size: 29px;
  }
  .page-heading p:last-child {
    font-size: 12px;
  }
  .selection-bar {
    gap: 12px;
    padding: 13px;
  }
  .selection-bar select {
    font-size: 12px;
  }
  .parametric summary {
    padding: 13px;
    font-size: 12px;
  }
  .parametric summary .tag {
    font-size: 12px;
  }
  .parametric-body {
    padding: 13px;
  }
  .card-head {
    padding: 12px;
    flex-wrap: wrap;
  }
  .card-head h2 {
    font-size: 12px;
  }
  .card-head .small {
    font-size: 12px;
  }
  .card-head .tag {
    font-size: 12px;
  }
  .stage {
    min-height: 240px;
  }
  .view-info {
    align-items: flex-start;
  }
  .comparison {
    grid-template-columns: 1fr;
    padding: 18px;
    gap: 25px;
  }
  .ptitle {
    font-size: 12px;
  }
  .ptitle .s {
    display: inline;
    margin-left: 5px;
  }
  .comparison .panel {
    justify-self: center;
    width: 100%;
  }
  .cbar {
    font-size: 12px;
  }
  .comparison .pbody {
    justify-content: center;
  }
  .quality {
    grid-template-columns: 1fr 1fr;
  }
  .q {
    padding: 13px;
  }
  .comparison-note {
    font-size: 12px;
  }
  .playback {
    gap: 4px;
    padding: 12px 9px 5px;
  }
  .playback .icon-btn {
    min-width: 27px;
    width: 27px;
    height: 30px;
    font-size: 17px;
  }
  .playback > input {
    margin: 0 6px;
  }
  .tl {
    font-size: 12px;
  }
  .tl-track {
    padding: 8px 10px;
  }
  .prose {
    font-size: 13px;
  }
  .prose h2 {
    font-size: 25px;
  }
  .prose.card {
    padding: 20px;
  }
  .dataset-card {
    padding: 24px 0;
  }
  .dataset-card .dataset-top {
    flex-direction: column;
    gap: 0;
  }
  .dataset-meta {
    gap: 12px;
  }
  .history-grid {
    grid-template-columns: 1fr;
  }
  .article-nav {
    gap: 14px;
    margin: 25px 0;
  }
  .about .prose section {
    padding: 25px 0;
  }
  .model-facts {
    gap: 15px;
  }
  html {
    scroll-padding-top: 140px;
  }
  .tour > div {
    gap: 9px;
  }
}
.quality-pass {
  color: var(--live);
}
.q .s,
.q .k,
.comparison-note {
  font-size: 12px;
}
.q .v {
  font-size: 18px;
}
.quality-fail {
  color: var(--warn);
}
.target-result {
  margin-top: 10px;
  font-size: 14px;
}
.target-note {
  color: var(--text-2);
  font-size: 12px;
  line-height: 1.5;
  margin-top: 5px;
}
.skeleton {
  width: 80%;
  height: 185px;
  margin: 18px auto;
  border-radius: 4px;
  background: var(--line);
  animation: skeleton-pulse 1.2s ease-in-out infinite alternate;
}
@keyframes skeleton-pulse {
  from {
    opacity: 0.3;
  }
  to {
    opacity: 0.7;
  }
}
.evidence-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.evidence-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  text-align: left;
}
/* Wide research tables scroll inside their own box on narrow screens. */
@media (max-width: 700px) {
  .evidence-table {
    display: block;
    overflow-x: auto;
  }
}
.evidence-table caption {
  text-align: left;
  padding: 16px;
  line-height: 1.6;
  background: var(--surface);
  max-width: calc(100vw - 28px);
}
.evidence-table th,
.evidence-table td {
  padding: 12px;
  border-top: 1px solid var(--line);
  vertical-align: top;
}
.evidence-table th {
  font-weight: 500;
}
.evidence-table td small {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  overflow-wrap: anywhere;
}
.evidence-table tbody tr:nth-child(4n + 1) {
  border-top: 2px solid var(--line);
}
.evidence-table .mono {
  white-space: nowrap;
}
.evidence-table .target-note {
  min-width: 120px;
}
.brand svg {
  width: 42px;
  height: 30px;
}
#menu-toggle {
  display: none;
}
#mobile-navigation {
  width: min(340px, calc(100% - 32px));
  height: auto;
  max-height: calc(100dvh - 32px);
  margin: 16px 16px 16px auto;
  padding: 16px;
  overflow: auto;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
}
#mobile-navigation::backdrop {
  background: #000c;
}
.drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  padding-left: 12px;
}
.brand-text {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.07em;
  font-size: 14px;
}
/* One navigation system per screen size: the sidebar on wide app pages, the
   drawer everywhere else. The header link to the workbench only shows on home. */
/* One top navigation on every page; the old research sidebar is retired. */
body:not([data-page="home"]) .top-actions > a.btn,
#workspace .sidebar {
  display: none;
}
#workspace {
  grid-template-columns: minmax(0, 1fr);
}
.workspace-content {
  max-width: 1240px;
}
.topnav {
  gap: 4px;
}
.topnav a {
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 15px;
  color: var(--text-2);
}
.topnav a:hover {
  color: var(--text);
}
.topnav a.active {
  color: var(--accent);
  background: var(--surface-2);
}
@media (max-width: 900px) {
  #menu-toggle {
    display: inline-grid;
  }
  .topnav,
  .top-actions > a.btn,
  #workspace .sidebar {
    display: none;
  }
  #workspace {
    grid-template-columns: minmax(0, 1fr);
  }
}
.selection-context {
  margin: 12px 0 20px;
  font-size: 14px;
}
.selection-context p {
  margin: 6px 0;
  overflow-wrap: anywhere;
}
#load-status {
  color: var(--live);
}
#share-box {
  margin-top: 12px;
}
#share-url {
  width: 100%;
  margin-top: 8px;
}
.launch-guide {
  padding: 24px;
  margin-bottom: 20px;
  font-size: 16px;
  line-height: 1.65;
}
.launch-guide h2 {
  margin: 6px 0 12px;
  font-size: 24px;
}
.launch-guide li {
  margin-bottom: 8px;
}
.launch-explanation,
.metric-help {
  margin: 16px;
  font-size: 16px;
  line-height: 1.65;
}
.launch-explanation {
  padding: 16px;
  border-radius: 6px;
  background: var(--surface-2);
}
.metric-help summary {
  cursor: pointer;
  color: var(--accent);
}
#share-url {
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 12px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
.about-now {
  max-width: 72ch;
  padding: 0 0 24px;
  margin-bottom: 8px;
}
.about-now h2 {
  font-size: 22px;
  margin: 0 0 8px;
}
.about-now p {
  font-size: 16px;
  line-height: 1.65;
}
.settings {
  max-width: 900px;
}
.pref-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px 32px;
  align-items: start;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}
.pref-row h2 {
  margin: 0 0 6px;
  font-size: 18px;
}
.pref-row p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.6;
  max-width: 68ch;
}
.pref-advanced {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.pref-advanced p {
  font-size: 14px;
}
@media (max-width: 640px) {
  .pref-row {
    grid-template-columns: 1fr;
  }
}
.analytics-choice {
  display: flex;
  gap: 12px;
  align-items: center;
}
.technical-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px;
  font-size: 16px;
  line-height: 1.7;
}
.technical-page h1 {
  font-size: 38px;
  line-height: 1.2;
}
.technical-page h2 {
  margin-top: 36px;
  font-size: 24px;
}
.technical-page pre {
  padding: 16px;
  overflow: auto;
  background: var(--surface-2);
}
@media (max-width: 600px) {
  #workspace .workspace-content {
    padding-bottom: 105px;
  }
  #run {
    position: fixed;
    bottom: max(16px, env(safe-area-inset-bottom));
    left: 16px;
    right: 16px;
    width: calc(100% - 32px);
    z-index: 30;
    padding: 14px;
    box-shadow: var(--shadow);
    font-size: 14px;
  }
  .launch-guide {
    padding: 18px;
  }
  .selection-bar select {
    font-size: 14px;
  }
  .parametric summary {
    font-size: 14px;
  }
  .prose {
    font-size: 16px;
  }
  html {
    scroll-padding-top: 80px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
    animation: none !important;
  }
}
@media (max-width: 400px) {
  .topbar .btn.primary {
    display: none;
  }
  .selection-bar {
    grid-template-columns: 1fr;
  }
  .selection-bar select {
    width: 100%;
  }
}

/* Contact menu in the header: a native disclosure, closes on outside click (app.js). */
.contact-menu {
  position: relative;
}
.contact-menu summary {
  list-style: none;
  cursor: pointer;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-2);
}
.contact-menu summary::-webkit-details-marker {
  display: none;
}
.contact-menu summary:hover,
.contact-menu[open] summary {
  color: var(--text);
  border-color: var(--line-strong);
}
.contact-pop {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 30;
  display: grid;
  min-width: 240px;
  padding: 6px;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
}
.contact-pop a {
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-2);
}
.contact-pop a:hover {
  background: var(--surface-2);
  color: var(--accent);
}
@media (max-width: 900px) {
  .contact-menu {
    display: none;
  }
}