/*
 * Learn teaches the idea first; the real Codex application then owns the
 * screen. Everything here is outside its Shadow DOM and scoped to the course.
 */

body.lab-open:has(.lab-shell.phase-intro),
body.lab-open:has(.lab-shell.phase-brief),
body.lab-open:has(.lab-shell.phase-practice) {
  min-width: 0;
  max-width: 100%;
  overflow-x: hidden;
}

.lab-shell.phase-intro,
.lab-shell.phase-brief,
.lab-shell.phase-practice {
  --journey-header-height: 58px;
  --journey-footer-height: calc(68px + var(--journey-safe-bottom));
  --journey-ink: #171819;
  --journey-muted: #646669;
  --journey-faint: #888a8d;
  --journey-paper: #fff;
  --journey-canvas: #f7f7f8;
  --journey-line: rgb(24 25 28 / 9%);
  --journey-line-strong: rgb(24 25 28 / 14%);
  --journey-accent: #6856d7;
  --journey-accent-soft: rgb(104 86 215 / 8%);
  --journey-green: #17764d;
  --journey-safe-bottom: env(safe-area-inset-bottom, 0px);
  --journey-frame-width: min(1392px, calc(100vw - 88px));
  position: fixed;
  z-index: 40;
  inset: 0;
  display: grid;
  width: 100%;
  max-width: 100%;
  height: 100vh;
  height: 100dvh;
  min-width: 0;
  min-height: 0;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows:
    var(--journey-header-height)
    minmax(0, 1fr)
    var(--journey-footer-height);
  overflow: hidden;
  background: var(--journey-paper);
  color: var(--journey-ink);
  color-scheme: light;
}

/* One quiet, persistent point of orientation between learning and doing. */

.lab-shell.phase-intro .journey-header,
.lab-shell.phase-brief .journey-header,
.lab-shell.phase-practice .journey-header {
  position: sticky;
  z-index: 12;
  top: 0;
  display: grid;
  width: 100%;
  min-width: 0;
  height: var(--journey-header-height);
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  padding: 0 clamp(21px, 3.1vw, 43px);
  border-bottom: 1px solid var(--journey-line);
  background: rgb(255 255 255 / 93%);
  color: var(--journey-ink);
  backdrop-filter: blur(18px);
}

.lab-shell.phase-intro .journey-header .lab-brand,
.lab-shell.phase-brief .journey-header .lab-brand,
.lab-shell.phase-practice .journey-header .lab-brand,
.lab-shell.phase-intro .journey-brand,
.lab-shell.phase-brief .journey-brand,
.lab-shell.phase-practice .journey-brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 9px;
  color: var(--journey-ink);
  font-size: 14px;
  font-weight: 550;
  letter-spacing: -0.025em;
}

.lab-shell.phase-intro .journey-header .lab-brand span + span,
.lab-shell.phase-brief .journey-header .lab-brand span + span,
.lab-shell.phase-practice .journey-header .lab-brand span + span {
  color: var(--journey-muted);
}

.journey-brand-home {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 9px;
  color: var(--journey-ink);
}

.journey-brand-label {
  overflow: hidden;
  text-overflow: ellipsis;
}

.journey-brand-divider,
.journey-brand-course {
  flex: 0 0 auto;
  color: var(--journey-muted);
  font-weight: 460;
}

.journey-brand-course:hover,
.journey-brand-course:focus-visible {
  color: var(--journey-ink);
}

.lab-shell.phase-intro .journey-header .lab-brand svg,
.lab-shell.phase-brief .journey-header .lab-brand svg,
.lab-shell.phase-practice .journey-header .lab-brand svg,
.lab-shell.phase-intro .journey-brand svg,
.lab-shell.phase-brief .journey-brand svg,
.lab-shell.phase-practice .journey-brand svg {
  width: 23px;
  height: 23px;
}

.lab-shell.phase-intro .journey-stage-nav,
.lab-shell.phase-brief .journey-stage-nav,
.lab-shell.phase-practice .journey-stage-nav {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.journey-stage-list {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: clamp(2px, 0.45vw, 7px);
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.journey-stage-item {
  display: inline-flex;
  min-width: 0;
  flex: 0 0 auto;
  align-items: center;
  gap: clamp(2px, 0.4vw, 6px);
  color: var(--journey-muted);
}

.journey-stage-link,
.journey-stage-current {
  display: inline-flex;
  min-height: 27px;
  align-items: center;
  padding: 0 2px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: inherit;
  font-size: 11px;
  font-weight: 470;
  line-height: 1.2;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.journey-stage-link {
  cursor: pointer;
}

.journey-stage-link:hover,
.journey-stage-item.is-complete .journey-stage-link {
  color: var(--journey-ink);
}

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

.journey-stage-item.is-current .journey-stage-current {
  color: var(--journey-ink);
  font-weight: 620;
}

.journey-stage-separator {
  color: var(--journey-faint);
  font-size: 10px;
  line-height: 1;
}

.lab-shell.phase-intro .journey-progress,
.lab-shell.phase-brief .journey-progress,
.lab-shell.phase-practice .journey-progress {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 11px;
  color: var(--journey-muted);
  font-size: 12px;
  line-height: 1.25;
  white-space: nowrap;
}

.journey-footer {
  position: sticky;
  z-index: 14;
  bottom: 0;
  display: flex;
  width: 100%;
  height: var(--journey-footer-height);
  min-width: 0;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(12px, 2vw, 28px) var(--journey-safe-bottom);
  border-top: 1px solid var(--journey-line);
  background: rgb(255 255 255 / 96%);
  color: var(--journey-ink);
  backdrop-filter: blur(18px);
}

.journey-footer-nav,
.journey-footer .journey-nav {
  display: grid;
  width: 100%;
  min-width: 0;
  height: 100%;
  grid-template-columns: minmax(125px, 1fr) minmax(210px, 365px) minmax(125px, 1fr);
  align-items: center;
  gap: clamp(12px, 2.3vw, 28px);
}

.journey-footer-back {
  justify-self: start;
}

.journey-footer-next {
  justify-self: end;
}

.lab-shell.phase-intro .journey-footer-progress,
.lab-shell.phase-brief .journey-footer-progress,
.lab-shell.phase-practice .journey-footer-progress {
  width: 100%;
  min-width: 0;
  justify-content: center;
}

.lab-shell.phase-intro .journey-step-count,
.lab-shell.phase-brief .journey-step-count,
.lab-shell.phase-practice .journey-step-count {
  flex: 0 0 auto;
  color: var(--journey-muted);
  font-size: 12px;
  font-weight: 480;
  font-variant-numeric: tabular-nums;
}

.journey-step-picker {
  position: relative;
  display: inline-flex;
  min-width: 0;
  flex: 0 0 auto;
  align-items: center;
}

.journey-step-trigger {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  gap: 5px;
  padding: 0 7px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--journey-ink);
  white-space: nowrap;
}

.journey-step-trigger:hover,
.journey-step-trigger[aria-expanded="true"] {
  background: rgb(24 25 28 / 5%);
}

.journey-step-trigger > svg {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  color: var(--journey-muted);
  transition: transform 140ms ease;
}

.journey-step-trigger[aria-expanded="true"] > svg {
  transform: rotate(180deg);
}

.journey-step-menu {
  position: absolute;
  z-index: 42;
  top: auto;
  bottom: calc(100% + 21px);
  left: 50%;
  display: grid;
  width: min(330px, calc(100vw - 16px));
  max-height: min(
    430px,
    calc(100dvh - var(--journey-header-height) - var(--journey-footer-height) - 18px)
  );
  gap: 1px;
  padding: 5px;
  overflow-x: hidden;
  overflow-y: auto;
  border: 1px solid rgb(24 25 28 / 10%);
  border-radius: 12px;
  background: #fff;
  box-shadow:
    0 18px 44px -24px rgb(23 25 30 / 29%),
    0 3px 12px -7px rgb(23 25 30 / 14%);
  color: var(--journey-ink);
  overscroll-behavior: contain;
  transform: translateX(-50%);
}

.journey-step-menu[hidden] {
  display: none !important;
}

.journey-step-option {
  display: grid;
  width: 100%;
  min-width: 0;
  min-height: 38px;
  grid-template-columns: 23px minmax(0, 1fr) max-content;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--journey-ink);
  font-size: 12px;
  line-height: 17px;
  text-align: left;
}

.journey-step-option:hover,
.journey-step-option:focus-visible {
  background: rgb(24 25 28 / 5%);
}

.journey-step-option.is-current {
  background: rgb(104 86 215 / 7%);
}

.journey-step-option-number {
  color: var(--journey-muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.journey-step-option-number svg {
  display: block;
  width: 14px;
  height: 14px;
}

.journey-step-option-title {
  min-width: 0;
  overflow: hidden;
  color: var(--journey-ink);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.journey-step-option-status {
  display: inline-flex;
  min-width: 39px;
  align-items: center;
  justify-content: flex-end;
  color: var(--journey-accent);
  font-size: 10px;
  line-height: 17px;
  white-space: nowrap;
}

.journey-step-option-status svg {
  width: 14px;
  height: 14px;
}

.journey-step-option.is-complete .journey-step-option-number,
.journey-step-option.is-complete .journey-step-option-status {
  color: var(--journey-green);
}

.journey-progress-label,
.journey-duration {
  color: var(--journey-muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.lab-shell.phase-intro .journey-progress .progress-bar,
.lab-shell.phase-brief .journey-progress .progress-bar,
.lab-shell.phase-practice .journey-progress .progress-bar,
.lab-shell.phase-intro .journey-progress-track,
.lab-shell.phase-brief .journey-progress-track,
.lab-shell.phase-practice .journey-progress-track {
  height: 4px;
  min-width: 65px;
  flex: 1 1 auto;
  overflow: hidden;
  border-radius: 999px;
  background: rgb(22 23 25 / 9%);
}

.lab-shell.phase-intro .journey-footer .journey-progress-track,
.lab-shell.phase-brief .journey-footer .journey-progress-track,
.lab-shell.phase-practice .journey-footer .journey-progress-track {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 6px;
  min-width: 0;
  flex: none;
  overflow: hidden;
  border-radius: 0;
  background: rgb(22 23 25 / 10%);
  pointer-events: none;
}

.lab-shell.phase-intro .journey-progress .progress-fill,
.lab-shell.phase-brief .journey-progress .progress-fill,
.lab-shell.phase-practice .journey-progress .progress-fill,
.lab-shell.phase-intro .journey-progress-fill,
.lab-shell.phase-brief .journey-progress-fill,
.lab-shell.phase-practice .journey-progress-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--journey-accent);
  transition: width 300ms ease;
}

.lab-shell.phase-intro .journey-header-actions,
.lab-shell.phase-brief .journey-header-actions,
.lab-shell.phase-practice .journey-header-actions,
.lab-shell.phase-intro .journey-actions,
.lab-shell.phase-brief .journey-actions,
.lab-shell.phase-practice .journey-actions,
.lab-shell.phase-intro .journey-header .lab-header-actions,
.lab-shell.phase-brief .journey-header .lab-header-actions,
.lab-shell.phase-practice .journey-header .lab-header-actions {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
}

.journey-nav {
  display: flex;
  min-width: 0;
  flex: 0 0 auto;
  align-items: center;
  gap: 2px;
}

.journey-nav-button,
.journey-restart {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0 9px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--journey-ink);
  font-size: 12px;
  font-weight: 480;
  white-space: nowrap;
}

.journey-nav-button:hover:not(:disabled),
.journey-restart:hover {
  background: rgb(24 25 28 / 5%);
}

.journey-nav-button:disabled {
  opacity: 0.34;
}

.journey-nav-button > svg,
.journey-restart > svg {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  color: var(--journey-muted);
}

.journey-next:not(:disabled) {
  border-color: rgb(24 25 28 / 9%);
  background: #fafafa;
}

.journey-next:not(:disabled):hover {
  border-color: rgb(24 25 28 / 15%);
  background: #f3f3f4;
}

.journey-footer .journey-footer-back,
.journey-footer .journey-footer-next {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid #171819;
  border-radius: 9px;
  background: #171819;
  box-shadow: none;
  color: #fff;
}

.journey-footer .journey-footer-back:hover:not(:disabled),
.journey-footer .journey-footer-next:hover:not(:disabled) {
  border-color: #333437;
  background: #333437;
  color: #fff;
}

.journey-footer .journey-footer-back > svg,
.journey-footer .journey-footer-next > svg {
  color: #fff;
}

.journey-footer .journey-footer-back:focus-visible,
.journey-footer .journey-footer-next:focus-visible {
  outline: 2px solid #6454d0;
  outline-offset: 3px;
}

.journey-footer .journey-footer-back:disabled,
.journey-footer .journey-footer-next:disabled {
  border-color: #6c6e72;
  background: #6c6e72;
  color: #fff;
  opacity: 1;
  cursor: not-allowed;
}

.journey-restart {
  color: var(--journey-muted);
}

.journey-back,
.journey-exit {
  display: inline-flex;
  min-height: 35px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--journey-muted);
  font-size: 12px;
}

.journey-back:hover,
.journey-exit:hover {
  background: rgb(24 25 28 / 5%);
  color: var(--journey-ink);
}

.journey-back svg,
.journey-exit svg {
  width: 16px;
  height: 16px;
}

.lab-shell.phase-intro .journey-header .sandbox-pill,
.lab-shell.phase-brief .journey-header .sandbox-pill,
.lab-shell.phase-practice .journey-header .sandbox-pill {
  padding: 4px 9px;
  border: 1px solid rgb(24 25 28 / 7%);
  background: #f7f7f7;
  color: var(--journey-muted);
  font-size: 11px;
}

/* Full-bleed course chapters: a ruled editorial grid, not floating cards. */

.lab-shell.phase-brief .brief-screen {
  --brief-rule: rgb(24 25 28 / 16%);
  --brief-gutter: clamp(30px, 5.4vw, 76px);
  --brief-rail-width: clamp(205px, 23vw, 320px);
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 0;
  align-content: start;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #fff;
  scrollbar-color: rgb(24 25 28 / 18%) transparent;
}

.lab-shell.phase-brief .brief-inner {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.lab-shell.phase-brief .brief-editorial {
  display: grid;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr);
}

.lab-shell.phase-brief .brief-lesson-band {
  display: grid;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  grid-template-columns: var(--brief-rail-width) minmax(0, 1fr);
  align-items: stretch;
  border-bottom: 1px solid var(--brief-rule);
}

.lab-shell.phase-brief .brief-band-rail {
  display: grid;
  min-width: 0;
  grid-template-columns: 28px minmax(0, 1fr);
  align-content: start;
  align-items: start;
  gap: 12px;
  padding: 35px clamp(24px, 4vw, 51px);
  border-right: 1px solid var(--brief-rule);
}

.lab-shell.phase-brief .brief-band-index {
  color: var(--journey-faint);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  line-height: 1.55;
}

.lab-shell.phase-brief .brief-band-label {
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--journey-muted);
  font-size: 11px;
  font-weight: 610;
  letter-spacing: 0.071em;
  line-height: 1.55;
  text-transform: uppercase;
  text-wrap: balance;
}

.lab-shell.phase-brief .brief-band-content {
  display: grid;
  min-width: 0;
  align-content: start;
  gap: 17px;
  padding: 39px clamp(35px, 7vw, 94px) 46px clamp(34px, 5vw, 70px);
}

.lab-shell.phase-brief .brief-understand .brief-band-rail {
  padding-top: 37px;
}

.lab-shell.phase-brief .brief-understand .brief-band-content {
  gap: 19px;
  padding-top: 39px;
  padding-bottom: 49px;
}

.lab-shell.phase-brief .brief-main {
  display: grid;
  width: 100%;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  padding: 0;
}

.lab-shell.phase-brief .brief-hero-header {
  width: 100%;
  max-width: 100%;
  grid-template-columns: minmax(0, 1.1fr) minmax(330px, 0.9fr);
  align-items: center;
  column-gap: clamp(27px, 3.2vw, 45px);
  padding: clamp(53px, 8.4vh, 78px) clamp(43px, 6.4vw, 92px)
    clamp(47px, 7.2vh, 69px);
  border-bottom: 1px solid var(--brief-rule);
}

.lab-shell.phase-brief .brief-hero-copy {
  min-width: 0;
}

.lab-shell.phase-brief .brief-hero-visual,
.lab-shell.phase-brief .brief-hero-art {
  display: grid;
  width: min(590px, 100%);
  max-width: 100%;
  min-width: 0;
  align-self: center;
  justify-self: end;
  color: #171819;
  opacity: 0.92;
}

.lab-shell.phase-brief .brief-hero-svg,
.lab-shell.phase-brief .brief-network-svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  overflow: visible;
}

.lab-shell.phase-brief .brief-network-link,
.lab-shell.phase-brief .hero-line,
.lab-shell.phase-brief .hero-path {
  stroke: currentColor;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.lab-shell.phase-brief .brief-network-ring,
.lab-shell.phase-brief .brief-network-orbit {
  display: none;
}

.lab-shell.phase-brief .brief-hero-svg .hero-check,
.lab-shell.phase-brief .hero-review .hero-cursor {
  display: none;
}

.lab-shell.phase-brief .hero-muted {
  opacity: 0.52;
}

.lab-shell.phase-brief .brief-network-core,
.lab-shell.phase-brief .brief-network-node,
.lab-shell.phase-brief .hero-node {
  opacity: 0.78;
}

.lab-shell.phase-brief .hero-flow {
  stroke-dasharray: 3 8;
  animation: brief-hero-flow 11s linear infinite;
}

.lab-shell.phase-brief .hero-pulse {
  animation: brief-hero-pulse 4.8s ease-in-out infinite;
}

.lab-shell.phase-brief .hero-cursor {
  transform-box: fill-box;
  transform-origin: center;
  animation: brief-hero-cursor 6s ease-in-out infinite;
}

.lab-shell.phase-brief .hero-text {
  fill: currentColor;
  stroke: none;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.005em;
  text-rendering: geometricPrecision;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.lab-shell.phase-brief .hero-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
}

.lab-shell.phase-brief .hero-caption {
  font-size: 12px;
  opacity: 0.72;
}

.lab-shell.phase-brief .hero-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

@keyframes brief-hero-flow {
  to {
    stroke-dashoffset: -44;
  }
}

@keyframes brief-hero-pulse {
  0%,
  100% {
    opacity: 0.44;
  }

  50% {
    opacity: 0.83;
  }
}

@keyframes brief-hero-cursor {
  0%,
  100% {
    transform: translate(0, 0);
  }

  48% {
    transform: translate(2px, -2px);
  }
}

.lab-shell.phase-brief .brief-eyebrow {
  display: inline-flex;
  min-height: 27px;
  align-items: center;
  gap: 9px;
  margin: 0 0 clamp(16px, 2.7vh, 25px);
  color: var(--journey-ink);
  font-size: 15px;
  font-weight: 550;
  letter-spacing: 0.005em;
}

.lab-shell.phase-brief .brief-eyebrow svg,
.lab-shell.phase-brief .brief-eyebrow img {
  width: 18px;
  height: 18px;
  color: var(--journey-accent);
}

.lab-shell.phase-brief .brief-title {
  max-width: 15.4ch;
  margin: 0;
  padding: 0;
  color: var(--journey-ink);
  font-size: clamp(84.24px, 8.316vw, 112.32px);
  font-weight: 470;
  letter-spacing: -0.077em;
  line-height: 0.98;
  text-wrap: balance;
}

.lab-shell.phase-brief .brief-definition,
.lab-shell.phase-brief .brief-description {
  max-width: 67.4ch;
  min-width: 0;
  margin: 28px 0 0;
  padding: 0;
  border: 0;
  color: var(--journey-muted);
  font-size: clamp(14.4px, 1.2vw, 16.32px);
  line-height: 1.66;
  text-wrap: pretty;
}

.lab-shell.phase-brief .brief-understand-value {
  display: grid;
  min-width: 0;
  gap: 7px;
  margin-top: 5px;
  padding: 0;
  border: 0;
}

.lab-shell.phase-brief .brief-foundation {
  max-width: 76ch;
  margin: 0;
  color: var(--journey-muted);
  font-size: 15px;
  line-height: 1.76;
  text-wrap: pretty;
}

.lab-shell.phase-brief .brief-key-distinction {
  max-width: 78ch;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--journey-muted);
  font-size: 15px;
  line-height: 1.72;
  text-wrap: pretty;
}

.lab-shell.phase-brief .brief-understand-workflow {
  display: grid;
  min-width: 0;
  gap: 15px;
  margin-top: 8px;
  padding: 0;
  border: 0;
}

.lab-shell.phase-brief .brief-workflow-label,
.lab-shell.phase-brief .brief-note-label {
  margin: 0;
  color: var(--journey-ink);
  font-size: 13px;
  font-weight: 560;
  letter-spacing: -0.01em;
  line-height: 1.5;
  text-transform: none;
}

.lab-shell.phase-brief .brief-mechanism-list {
  display: grid;
  width: 100%;
  min-width: 0;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(17px, 2.7vw, 36px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.lab-shell.phase-brief .brief-mechanism {
  display: grid;
  min-width: 0;
  min-height: 0;
  align-content: start;
  gap: 7px;
  padding: 0;
}

.lab-shell.phase-brief .brief-mechanism + .brief-mechanism {
  padding-left: 0;
  border: 0;
}

.lab-shell.phase-brief .brief-mechanism-number {
  color: var(--journey-faint);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

.lab-shell.phase-brief .brief-mechanism-title {
  margin: 0;
  color: var(--journey-ink);
  font-size: 14px;
  font-weight: 560;
  letter-spacing: -0.01em;
  line-height: 1.45;
  text-wrap: balance;
}

.lab-shell.phase-brief .brief-mechanism-copy {
  margin: 0;
  color: var(--journey-muted);
  font-size: 14px;
  line-height: 1.65;
  text-wrap: pretty;
}

.lab-shell.phase-brief .brief-note-title {
  margin: 0;
  color: var(--journey-ink);
  font-size: 16px;
  font-weight: 560;
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.lab-shell.phase-brief .brief-note-copy,
.lab-shell.phase-brief .brief-next-copy {
  max-width: 71ch;
  margin: 0;
  color: var(--journey-muted);
  font-size: 15px;
  line-height: 1.65;
  text-wrap: pretty;
}

.lab-shell.phase-brief .brief-boundary {
  max-width: 76ch;
  margin: 9px 0 0;
  padding: 0;
  border: 0;
  color: var(--journey-faint);
  font-size: 13px;
  line-height: 1.6;
  text-wrap: pretty;
}

.lab-shell.phase-brief .brief-example-prompt {
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--journey-ink);
  font-size: 14px;
  line-height: 1.65;
  text-align: left;
  text-decoration: underline;
  text-decoration-color: rgb(24 25 28 / 23%);
  text-underline-offset: 3px;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.lab-shell.phase-brief .brief-example-prompt:hover {
  text-decoration-color: rgb(24 25 28 / 63%);
}

/* Practice: guidance has its own lane and never covers the real application. */

.lab-shell.phase-practice .practice-screen {
  --practice-task-lane: clamp(246px, 20vw, 282px);
  --practice-lane-gap: clamp(15px, 1.7vw, 23px);
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-areas: "workspace guidance";
  grid-template-columns: minmax(0, 1fr) var(--practice-task-lane);
  grid-template-rows: minmax(0, 1fr);
  column-gap: var(--practice-lane-gap);
  align-items: stretch;
  justify-items: stretch;
  padding: 24px clamp(20px, 2.7vw, 35px) 13px;
  overflow: hidden;
  isolation: isolate;
  background: var(--journey-paper);
}

.lab-shell.phase-practice .practice-codex-frame {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(var(--journey-frame-width), 100%);
  max-width: 100%;
  height: min(840px, calc(100vh - var(--journey-header-height) - var(--journey-footer-height) - 58px));
  height: min(840px, calc(100dvh - var(--journey-header-height) - var(--journey-footer-height) - 58px));
  min-width: 0;
  min-height: 290px;
  grid-area: workspace;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  align-self: center;
  justify-self: center;
  overflow: hidden;
  border: 1px solid rgb(25 26 29 / 10%);
  border-radius: 19px;
  background: #fff;
  box-shadow:
    0 45px 100px -40px rgb(37 36 65 / 32%),
    0 17px 38px -21px rgb(36 38 50 / 20%),
    0 1px 2px rgb(20 21 23 / 6%);
}

.lab-shell.phase-practice .practice-codex-frame > .workspace-panel,
.lab-shell.phase-practice .practice-codex-frame .workspace-panel.codex-mini-live {
  display: grid;
  width: 100%;
  max-width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  grid-column: 1;
  grid-row: 1;
  overflow: hidden;
  border: 0;
  border-radius: inherit;
  background: #fff;
}

.lab-shell.phase-practice .practice-codex-frame .codex-mini-live-stage,
.lab-shell.phase-practice .practice-codex-frame .codex-mini-host {
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  max-width: 100%;
}

.lab-shell.phase-practice .practice-guidance-stack {
  position: relative;
  display: grid;
  width: 100%;
  max-width: 100%;
  max-height: 100%;
  min-width: 0;
  min-height: 0;
  grid-area: guidance;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  align-self: start;
  justify-self: stretch;
  gap: 10px;
  padding-inline-end: 20px;
  padding-bottom: 64px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-padding-bottom: 64px;
  scrollbar-gutter: stable;
  scrollbar-color: rgb(24 25 28 / 18%) transparent;
}

.practice-task-card {
  position: relative;
  z-index: 5;
  inset: auto;
  display: grid;
  width: 100%;
  max-width: 100%;
  max-height: 100%;
  min-width: 0;
  min-height: 0;
  grid-area: auto;
  grid-template-rows: auto minmax(0, 1fr);
  align-self: start;
  justify-self: stretch;
  overflow: hidden;
  border: 1px solid rgb(24 25 28 / 13%);
  border-radius: 16px;
  background: #fff;
  box-shadow:
    0 18px 40px -24px rgb(27 29 39 / 36%),
    0 3px 11px -6px rgb(27 29 39 / 16%);
  backdrop-filter: blur(16px);
}

.practice-task-toggle {
  display: flex;
  width: 100%;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 9px;
  padding: 0 14px;
  border: 0;
  background: transparent;
  color: var(--journey-ink);
  font-size: 15px;
  font-weight: 620;
  line-height: 1.35;
  text-align: left;
}

.practice-task-toggle:hover {
  background: rgb(23 24 25 / 3%);
}

.lab-shell.phase-practice .practice-task-toggle:focus-visible {
  outline-offset: -5px;
  border-radius: 14px;
}

.practice-task-toggle > span {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 8px;
}

.practice-task-heading {
  min-width: 0;
  overflow: hidden;
  letter-spacing: -0.015em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.practice-task-progress {
  flex: 0 0 auto;
  min-height: 23px;
  justify-content: center;
  padding: 0 7px;
  border-radius: 999px;
  background: rgb(24 25 28 / 6%);
  color: #414349;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.practice-task-toggle svg {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  color: #55575d;
}

.practice-task-toggle[aria-expanded="true"] > svg:last-child {
  transform: rotate(180deg);
}

.practice-task-list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 12px 14px 15px;
  list-style: none;
}

.practice-task-list[hidden] {
  display: none !important;
}

.practice-task-content[hidden] {
  display: none !important;
}

.practice-task-content {
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.practice-task-item {
  display: flex;
  min-width: 0;
  min-height: 20px;
  align-items: flex-start;
  gap: 10px;
  color: #393b40;
  font-size: 13px;
  font-weight: 450;
  line-height: 1.52;
}

.practice-task-item > span:last-child {
  min-width: 0;
  overflow-wrap: anywhere;
}

.practice-task-item svg {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  margin-top: 1px;
  color: #878b91;
}

.practice-task-check {
  display: inline-grid;
  width: 19px;
  height: 19px;
  flex: 0 0 19px;
  place-items: center;
  margin-top: 1px;
  border: 1.5px solid rgb(24 25 28 / 27%);
  border-radius: 50%;
  color: var(--journey-green);
}

.practice-task-check svg {
  width: 12px;
  height: 12px;
  margin: 0;
}

.practice-task-item.is-complete,
.practice-task-item[data-complete="true"],
.practice-task-item.check-pass {
  color: var(--journey-green);
}

.practice-task-item.is-complete svg,
.practice-task-item[data-complete="true"] svg,
.practice-task-item.check-pass svg {
  color: var(--journey-green);
}

.practice-task-item.is-complete .practice-task-check {
  border-color: rgb(23 118 77 / 30%);
  background: rgb(23 118 77 / 8%);
}

.practice-task-item:has(> .practice-task-trigger) {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  gap: 4px;
}

.practice-task-trigger {
  display: grid;
  width: 100%;
  min-width: 0;
  grid-template-columns: 19px minmax(0, 1fr) 14px;
  align-items: start;
  column-gap: 10px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.practice-task-label {
  min-width: 0;
  overflow-wrap: anywhere;
}

.practice-task-trigger:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.practice-task-item.is-active:not(.is-complete) .practice-task-label,
.practice-task-item[data-active="true"]:not(.is-complete) .practice-task-label {
  color: var(--journey-ink);
  font-weight: 560;
}

.practice-task-item.is-active:not(.is-complete) .practice-task-check,
.practice-task-item[data-active="true"]:not(.is-complete) .practice-task-check {
  border-color: rgb(24 25 28 / 43%);
}

.practice-task-item .practice-task-chevron {
  margin-top: 3px;
  color: #777a80;
  transition: transform 140ms ease;
}

.practice-task-trigger[aria-expanded="true"] .practice-task-chevron {
  transform: rotate(180deg);
}

.practice-task-detail {
  display: grid;
  min-width: 0;
  max-width: 100%;
  gap: 8px;
  padding: 2px 0 4px 29px;
  color: var(--journey-muted);
}

.practice-task-detail[hidden] {
  display: none !important;
}

.practice-task-guidance {
  min-width: 0;
  margin: 0;
  color: var(--journey-muted);
  font-size: 12px;
  line-height: 1.55;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.practice-task-substeps,
.practice-task-checks {
  display: grid;
  min-width: 0;
  gap: 5px;
  margin: 0;
  padding-left: 18px;
  color: var(--journey-muted);
  font-size: 12px;
  line-height: 1.5;
}

.practice-task-substeps > li,
.practice-task-checks > li {
  padding-left: 2px;
  overflow-wrap: anywhere;
}

.practice-task-guidance-label {
  color: var(--journey-ink);
  font-weight: 560;
}

.practice-task-detail code {
  padding: 1px 0;
  border-radius: 4px;
  background: rgb(24 25 28 / 6%);
  color: var(--journey-ink);
  font-size: 0.93em;
  overflow-wrap: anywhere;
}

.practice-task-example {
  max-width: 100%;
  justify-self: start;
  padding: 5px 8px;
  border: 1px solid rgb(24 25 28 / 14%);
  border-radius: 7px;
  background: #fff;
  color: var(--journey-ink);
  font-size: 11.5px;
  font-weight: 540;
  line-height: 1.4;
  text-align: left;
  white-space: normal;
  overflow-wrap: anywhere;
  cursor: pointer;
}

.practice-task-example:hover {
  background: rgb(24 25 28 / 4%);
}

.practice-task-success {
  display: grid;
  min-width: 0;
  gap: 4px;
  margin: 0 14px 14px;
  padding: 10px 11px;
  border: 1px solid rgb(23 118 77 / 15%);
  border-radius: 11px;
  background: rgb(23 118 77 / 7%);
  color: var(--journey-green);
}

.practice-task-success[hidden] {
  display: none !important;
}

.practice-task-success-title {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
  margin: 0;
  font-size: 13px;
  font-weight: 620;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.practice-task-success-title > svg {
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
}

.practice-task-success-copy {
  min-width: 0;
  margin: 0;
  padding-left: 22px;
  color: #456553;
  font-size: 11px;
  line-height: 1.48;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

/* Optional help remains useful without competing with the Codex composer. */

.hint-dock {
  position: relative;
  z-index: 7;
  inset: auto;
  display: grid;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  grid-area: auto;
  align-self: start;
  justify-self: stretch;
  justify-items: stretch;
  overflow: hidden;
  border: 1px solid rgb(24 25 28 / 10%);
  border-radius: 14px;
  background: #fff;
  box-shadow:
    0 15px 35px -22px rgb(27 29 39 / 26%),
    0 3px 10px -6px rgb(27 29 39 / 11%);
  transform: none;
}

.hint-toggle {
  display: inline-flex;
  order: 0;
  width: 100%;
  min-height: 40px;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  padding: 0 12px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--journey-muted);
  font-size: 12px;
  font-weight: 510;
  white-space: nowrap;
}

.hint-toggle:hover,
.hint-toggle[aria-expanded="true"] {
  background: rgb(104 86 215 / 4%);
  color: var(--journey-accent);
}

.hint-toggle > span {
  min-width: 0;
  flex: 1 1 auto;
  text-align: left;
}

.hint-toggle svg {
  width: 15px;
  height: 15px;
}

.hint-toggle > svg:last-child {
  flex: 0 0 15px;
  transition: transform 140ms ease;
}

.hint-toggle[aria-expanded="true"] > svg:last-child {
  transform: rotate(180deg);
}

.hint-content {
  display: grid;
  order: 1;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  gap: 8px;
  margin: 0;
  padding: 8px 10px 11px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.hint-prompt-label {
  color: var(--journey-muted);
  font-size: 11px;
  font-weight: 540;
}

.hint-content[hidden] {
  display: none !important;
}

.hint-content > p,
.hint-content > h3,
.hint-content > h4 {
  margin: 0 0 2px;
  color: var(--journey-muted);
  font-size: 11px;
  line-height: 1.5;
}

.practice-learn-more {
  display: grid;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgb(24 25 28 / 11%);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 8px 24px -22px rgb(27 29 39 / 24%);
}

.practice-learn-more-toggle {
  min-height: 44px;
  padding-inline: 14px;
  border-bottom: 1px solid transparent;
  color: var(--journey-muted);
  font-size: 12.5px;
  font-weight: 560;
  line-height: 1.35;
  text-decoration: none;
}

.practice-learn-more-toggle:hover,
.practice-learn-more-toggle[aria-expanded="true"] {
  border-bottom-color: var(--journey-line);
  background: rgb(24 25 28 / 3%);
  color: var(--journey-ink);
  text-decoration: none;
}

.practice-learn-more-content {
  gap: 8px;
  padding: 13px 14px 15px;
}

.practice-learn-more-content > p,
.practice-learn-more-content > h3 {
  min-width: 0;
  margin: 0;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.practice-learn-more-eyebrow {
  color: var(--journey-faint);
  font-size: 10.5px;
  font-weight: 620;
  letter-spacing: 0.012em;
  line-height: 1.4;
}

.practice-learn-more-title {
  color: var(--journey-ink);
  font-size: 14px;
  font-weight: 620;
  letter-spacing: -0.012em;
  line-height: 1.38;
}

.practice-learn-more-summary + .practice-learn-more-title,
.practice-learn-more-link + .practice-learn-more-title {
  margin-top: 12px;
}

.practice-learn-more-summary {
  color: #3f4246;
  font-size: 12.5px;
  line-height: 1.55;
}

.practice-learn-more-context {
  color: var(--journey-muted);
  font-size: 11.5px;
  line-height: 1.55;
}

.practice-learn-more-link {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  min-height: 36px;
  align-items: center;
  margin-top: 2px;
  padding: 6px 0;
  background: transparent;
  color: #245f9e;
  font-size: 11.5px;
  font-weight: 560;
  line-height: 1.45;
  text-align: left;
  text-decoration: underline;
  text-decoration-color: rgb(36 95 158 / 42%);
  text-underline-offset: 3px;
  white-space: normal;
  overflow-wrap: anywhere;
}

.practice-learn-more-link:hover,
.practice-learn-more-link:focus-visible {
  color: #174b82;
  text-decoration-color: currentColor;
}

.practice-learn-more-toggle:focus-visible,
.practice-learn-more-link:focus-visible {
  outline-color: #2878b8;
}

.practice-linear-card {
  display: grid;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  gap: 0;
  padding: 15px;
  overflow: hidden;
  border: 1px solid rgb(24 25 28 / 11%);
  border-radius: 14px;
  background: #fff;
  box-shadow:
    0 15px 35px -22px rgb(27 29 39 / 26%),
    0 3px 10px -6px rgb(27 29 39 / 11%);
  color: var(--journey-ink);
}

.practice-linear-toggle {
  display: grid;
  width: 100%;
  min-width: 0;
  min-height: 44px;
  grid-template-columns: minmax(0, 1fr) 16px;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.practice-linear-toggle:hover {
  color: var(--journey-ink);
}

.practice-linear-toggle:focus-visible {
  outline: 2px solid var(--journey-accent);
  outline-offset: 3px;
}

.practice-linear-toggle-copy {
  display: grid;
  min-width: 0;
  gap: 7px;
}

.practice-linear-chevron {
  width: 16px;
  height: 16px;
  color: var(--journey-muted);
  transition: transform 140ms ease;
}

.practice-linear-toggle[aria-expanded="true"] .practice-linear-chevron {
  transform: rotate(90deg);
}

.practice-linear-content {
  display: grid;
  min-width: 0;
  gap: 12px;
  padding-top: 12px;
}

.practice-linear-content[hidden] {
  display: none !important;
}

.practice-linear-header,
.practice-linear-brand,
.practice-linear-badges {
  display: flex;
  min-width: 0;
  align-items: center;
}

.practice-linear-header {
  justify-content: space-between;
  gap: 10px;
}

.practice-linear-brand {
  gap: 6px;
  color: var(--journey-muted);
  font-size: 11px;
  font-weight: 560;
}

.practice-linear-brand img {
  width: 17px;
  height: 17px;
}

.practice-linear-key {
  color: #44546f;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.practice-linear-title {
  display: block;
  min-width: 0;
  margin: 0;
  color: var(--journey-ink);
  font-size: 15px;
  font-weight: 620;
  letter-spacing: -0.018em;
  line-height: 1.35;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.practice-linear-badges {
  flex-wrap: wrap;
  gap: 6px;
}

.practice-linear-status,
.practice-linear-priority {
  display: inline-flex;
  min-height: 22px;
  align-items: center;
  padding: 0 7px;
  border-radius: 5px;
  font-size: 10px;
  font-weight: 650;
  line-height: 1;
}

.practice-linear-status {
  background: #deebff;
  color: #0747a6;
}

.practice-linear-priority {
  background: #ffebe6;
  color: #ae2a19;
}

.practice-linear-fields {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 10px 0;
  border-top: 1px solid var(--journey-line);
  border-bottom: 1px solid var(--journey-line);
}

.practice-linear-fields > div {
  display: grid;
  min-width: 0;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 8px;
  font-size: 11px;
  line-height: 1.4;
}

.practice-linear-fields dt {
  color: var(--journey-muted);
}

.practice-linear-fields dd {
  min-width: 0;
  margin: 0;
  color: var(--journey-ink);
  overflow-wrap: anywhere;
}

.practice-linear-section {
  display: grid;
  min-width: 0;
  gap: 5px;
}

.practice-linear-section h3,
.practice-linear-section p {
  margin: 0;
}

.practice-linear-section h3 {
  color: var(--journey-muted);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.practice-linear-section p,
.practice-linear-criteria {
  color: var(--journey-ink);
  font-size: 11px;
  line-height: 1.48;
  overflow-wrap: anywhere;
}

.practice-linear-criteria {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 17px;
}

.hint-prompt-chip {
  display: flex;
  width: 100%;
  min-width: 0;
  min-height: 37px;
  align-items: center;
  justify-content: space-between;
  gap: 9px;
  padding: 8px 10px;
  border: 1px solid rgb(24 25 28 / 8%);
  border-radius: 10px;
  background: #f8f8f9;
  color: #434548;
  font-size: 11px;
  line-height: 1.5;
  text-align: left;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.hint-prompt-chip:hover {
  border-color: rgb(104 86 215 / 20%);
  background: rgb(104 86 215 / 5%);
  color: var(--journey-ink);
}

.hint-prompt-chip svg {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  color: var(--journey-accent);
}

.practice-stage-actions {
  position: absolute;
  z-index: 6;
  bottom: calc(11px + var(--journey-safe-bottom));
  left: max(44px, calc((100vw - var(--journey-frame-width)) / 2));
  display: flex;
  min-height: 40px;
  align-items: center;
  gap: 9px;
}

.practice-task-card .practice-stage-actions {
  position: static;
  min-height: 0;
  flex-wrap: wrap;
  gap: 8px;
  padding: 1px 14px 15px;
}

.practice-stage-actions .codex-mini-lesson-actions,
.practice-stage-actions .codex-mini-approval {
  display: grid;
  width: 100%;
  gap: 7px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.practice-stage-actions:empty,
.practice-stage-actions[hidden] {
  display: none;
}

.practice-stage-actions .primary-button,
.practice-stage-actions .codex-mini-course-action,
.practice-stage-actions .codex-mini-plan-toggle,
.practice-stage-actions .publish-pr-button {
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 13px;
}

.practice-stage-actions .primary-button,
.practice-stage-actions .publish-pr-button {
  border-color: transparent;
  background: var(--journey-ink);
  color: #fff;
}

.practice-stage-actions .codex-mini-plan-toggle[aria-pressed="true"] {
  border-color: rgb(104 86 215 / 20%);
  background: rgb(104 86 215 / 9%);
  color: var(--journey-accent);
}

.practice-stage-actions .approval-note,
.practice-stage-actions .composer-validation,
.practice-stage-actions .practice-stage-validation {
  max-width: 29ch;
  margin: 0;
  color: var(--journey-muted);
  font-size: 10px;
  line-height: 1.4;
}

.practice-stage-actions .practice-stage-validation {
  color: #845413;
}

/*
 * The hosted Mini composer leaves its attachment button unwired. This course
 * menu anchors to that genuine button while matching Mini's own Radix menu
 * tokens; its contents remain outside the product's separate Shadow DOM.
 */

.lab-shell.phase-practice .codex-mode-menu {
  --codex-mode-width: min(404px, calc(100vw - 18px));
  position: fixed;
  z-index: 18;
  top: var(--codex-mode-y, calc(100vh - 100px));
  left: clamp(
    9px,
    var(--codex-mode-x, 16px),
    calc(100vw - var(--codex-mode-width) - 9px)
  );
  display: grid;
  width: var(--codex-mode-width);
  max-height: min(240px, calc(var(--codex-mode-y, 100vh) - var(--journey-header-height) - 12px));
  gap: 0;
  padding: 4px;
  overflow-x: hidden;
  overflow-y: auto;
  transform: translateY(-100%);
  border: 0;
  border-radius: 12px;
  background: #fff;
  box-shadow:
    0 0 0 0.5px rgb(26 28 31 / 8%),
    0 8px 16px -4px rgb(0 0 0 / 12%);
  color: #1a1c1f;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  line-height: 20px;
  overscroll-behavior: contain;
  scrollbar-color: rgb(26 28 31 / 17%) transparent;
}

.lab-shell.phase-practice .codex-mode-menu[hidden],
.lab-shell.phase-practice .codex-mode-menu[aria-hidden="true"] {
  display: none !important;
}

.codex-mode-menu-item,
.codex-action-row {
  position: relative;
  display: flex;
  width: 100%;
  min-width: 0;
  min-height: 38px;
  align-items: center;
  justify-content: flex-start;
  gap: 9px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #1a1c1f;
  font-size: 13px;
  font-weight: 400;
  line-height: 20px;
  text-align: left;
  white-space: nowrap;
  transition: background-color 110ms ease;
}

.codex-mode-menu-item:hover,
.codex-mode-menu-item:focus-visible,
.codex-action-row:hover,
.codex-action-row:focus-visible {
  outline: 0;
  background: rgb(26 28 31 / 5%);
}

.lab-shell.phase-practice .codex-mode-menu .codex-mode-menu-item:focus-visible,
.lab-shell.phase-practice .codex-mode-menu .codex-action-row:focus-visible {
  outline: 0;
  outline-offset: 0;
  background: rgb(26 28 31 / 5%);
}

.codex-action-icon {
  display: grid;
  width: 17px;
  height: 18px;
  flex: 0 0 17px;
  place-items: center;
  color: rgb(26 28 31 / 67%);
}

.codex-action-icon > svg {
  width: 16px;
  height: 16px;
}

.codex-action-label {
  display: block;
  min-width: 0;
  flex: 0 0 auto;
  color: #1a1c1f;
  font-size: 13px;
  font-weight: 440;
  line-height: 20px;
}

.codex-action-description {
  display: block;
  min-width: 0;
  flex: 0 1 auto;
  overflow: hidden;
  color: rgb(26 28 31 / 50%);
  font-size: 13px;
  font-weight: 400;
  line-height: 20px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.codex-action-description:empty {
  display: none;
}

/* Celebrate the actual milestone and give exactly one clear next step. */

.completion-overlay {
  position: fixed;
  z-index: 30;
  inset: var(--journey-header-height) 0 var(--journey-footer-height);
  display: grid;
  min-width: 0;
  min-height: 0;
  place-items: center;
  padding: 23px 20px calc(23px + var(--journey-safe-bottom));
  overflow-y: auto;
  background: rgb(27 28 32 / 32%);
  backdrop-filter: blur(9px);
}

.completion-overlay[hidden],
.completion-overlay[aria-hidden="true"] {
  display: none !important;
}

.journey-restart-dialog {
  position: fixed;
  z-index: 55;
  inset: 0;
  display: grid;
  min-width: 0;
  min-height: 0;
  place-items: center;
  padding: 20px 18px calc(20px + var(--journey-safe-bottom));
  overflow-y: auto;
  background: rgb(27 28 32 / 35%);
  backdrop-filter: blur(8px);
}

.journey-restart-dialog[hidden],
.journey-restart-dialog[aria-hidden="true"] {
  display: none !important;
}

.journey-restart-card {
  width: min(445px, 100%);
  min-width: 0;
  padding: 32px 33px 28px;
  border: 1px solid rgb(26 27 30 / 8%);
  border-radius: 19px;
  background: #fff;
  box-shadow:
    0 30px 75px -33px rgb(14 15 20 / 38%),
    0 8px 21px -14px rgb(14 15 20 / 18%);
  color: var(--journey-ink);
}

.journey-restart-title {
  margin: 0 0 9px;
  color: var(--journey-ink);
  font-size: 29px;
  font-weight: 510;
  letter-spacing: -0.054em;
  line-height: 1.14;
  text-wrap: balance;
}

.journey-restart-copy {
  margin: 0;
  color: var(--journey-muted);
  font-size: 13px;
  line-height: 1.65;
  text-wrap: pretty;
}

.journey-restart-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
}

.journey-restart-confirm,
.journey-restart-cancel {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 15px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 530;
}

.journey-restart-confirm {
  background: var(--journey-ink);
  color: #fff;
}

.journey-restart-confirm:hover {
  background: #37383a;
}

.journey-restart-cancel {
  border-color: rgb(24 25 28 / 10%);
  background: transparent;
  color: var(--journey-muted);
}

.journey-restart-cancel:hover {
  background: rgb(24 25 28 / 5%);
  color: var(--journey-ink);
}

.completion-card {
  position: relative;
  width: min(495px, 100%);
  min-width: 0;
  padding: 37px 38px 34px;
  border: 1px solid rgb(26 27 30 / 8%);
  border-radius: 22px;
  background: #fff;
  box-shadow:
    0 31px 85px -35px rgb(14 15 20 / 42%),
    0 9px 24px -15px rgb(14 15 20 / 20%);
  color: var(--journey-ink);
}

.completion-card > svg:first-child,
.completion-icon,
.completion-mark {
  display: grid;
  width: 39px;
  height: 39px;
  place-items: center;
  margin: 0 0 21px;
  border-radius: 12px;
  background: rgb(23 118 77 / 9%);
  color: var(--journey-green);
}

.completion-icon svg,
.completion-mark svg {
  width: 20px;
  height: 20px;
}

.completion-title {
  margin: 0 0 11px;
  color: var(--journey-ink);
  font-size: clamp(30px, 4.1vw, 42px);
  font-weight: 500;
  letter-spacing: -0.062em;
  line-height: 1.08;
  text-wrap: balance;
}

.completion-eyebrow {
  margin: 0 0 10px;
  color: var(--journey-green);
  font-size: 12px;
  font-weight: 550;
}

.completion-summary {
  margin: 0;
  color: var(--journey-muted);
  font-size: 14px;
  line-height: 1.62;
  text-wrap: pretty;
}

.completion-task-summary {
  margin: 17px 0 0;
  padding: 12px 13px;
  border: 1px solid rgb(24 25 28 / 8%);
  border-radius: 11px;
  background: #fafafa;
  color: var(--journey-muted);
  font-size: 12px;
  line-height: 1.55;
  text-wrap: pretty;
}

.completion-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 11px;
}

.completion-stay {
  min-height: 41px;
  margin-top: 24px;
  padding: 0 11px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--journey-muted);
  font-size: 12px;
}

.completion-stay:hover {
  background: rgb(24 25 28 / 5%);
  color: var(--journey-ink);
}

.completion-summary ul,
.completion-card > ul {
  display: grid;
  gap: 9px;
  margin: 17px 0 0;
  padding: 0;
  list-style: none;
}

.completion-summary li,
.completion-card > ul li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--journey-muted);
  font-size: 12px;
}

.completion-summary li svg,
.completion-card > ul li svg {
  width: 15px;
  height: 15px;
  color: var(--journey-green);
}

.completion-next,
.completion-open,
.lab-shell.phase-practice .completion-next.primary-button,
.lab-shell.phase-practice .completion-open.primary-button {
  display: inline-flex;
  min-height: 45px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--journey-ink);
  color: #fff;
  font-size: 13px;
  font-weight: 540;
}

.completion-next:hover,
.completion-open:hover,
.lab-shell.phase-practice .completion-next.primary-button:hover,
.lab-shell.phase-practice .completion-open.primary-button:hover {
  background: #36373a;
}

.completion-next svg {
  width: 15px;
  height: 15px;
}

.lab-shell.phase-intro :focus-visible,
.lab-shell.phase-brief :focus-visible,
.lab-shell.phase-practice :focus-visible {
  outline: 2px solid #6454d0;
  outline-offset: 3px;
}

@media (max-width: 1440px) {
  .lab-shell.phase-brief .journey-header .sandbox-pill,
  .lab-shell.phase-practice .journey-header .sandbox-pill {
    display: none;
  }
}

@media (max-width: 1180px) {
  .journey-stage-item:not(.is-current),
  .journey-stage-item.is-current .journey-stage-separator {
    display: none;
  }

  .journey-restart > .journey-nav-label,
  .journey-back > span {
    display: none;
  }

  .journey-restart,
  .journey-back {
    width: 35px;
    padding-right: 0;
    padding-left: 0;
  }
}

@media (max-width: 960px) {
  .lab-shell.phase-intro,
  .lab-shell.phase-brief,
  .lab-shell.phase-practice {
    --journey-frame-width: calc(100vw - 50px);
  }

  .lab-shell.phase-intro .journey-header,
  .lab-shell.phase-brief .journey-header,
  .lab-shell.phase-practice .journey-header {
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 9px;
    padding-right: 15px;
    padding-left: 15px;
  }

  .lab-shell.phase-brief .brief-screen {
    --brief-gutter: clamp(30px, 5.5vw, 53px);
    --brief-rail-width: clamp(176px, 22vw, 213px);
  }

  .lab-shell.phase-brief .brief-band-rail {
    grid-template-columns: 23px minmax(0, 1fr);
    gap: 8px;
    padding-right: 19px;
    padding-left: 22px;
  }

  .lab-shell.phase-brief .brief-band-content {
    padding-right: 39px;
    padding-left: 35px;
  }

  .lab-shell.phase-brief .brief-hero-header {
    grid-template-columns: minmax(0, 1.188fr) minmax(220px, 0.812fr);
    column-gap: 29px;
    padding-right: 48px;
    padding-left: 48px;
  }

  .lab-shell.phase-brief .brief-title {
    font-size: clamp(62.64px, 8.424vw, 84.24px);
  }

  .lab-shell.phase-brief .brief-mechanism-list {
    column-gap: 17px;
  }

  .lab-shell.phase-brief .brief-mechanism + .brief-mechanism {
    padding-left: 0;
  }

  .lab-shell.phase-practice .practice-screen {
    padding-right: 20px;
    padding-left: 20px;
  }

  .practice-task-card {
    inset: auto;
    width: 100%;
  }

  .practice-stage-actions {
    left: 26px;
  }
}

@media (max-width: 900px) {
  .lab-shell.phase-practice .practice-screen {
    grid-template-areas:
      "workspace"
      "guidance";
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) auto;
    column-gap: 0;
    row-gap: 8px;
    padding: 13px 14px 11px;
  }

  .lab-shell.phase-practice .practice-codex-frame {
    width: 100%;
    height: 100%;
    max-height: 100%;
    min-height: 0;
    align-self: stretch;
  }

  .lab-shell.phase-practice .practice-guidance-stack {
    max-height: min(405px, 47dvh);
    grid-area: guidance;
    gap: 8px;
  }

  .lab-shell.phase-practice .practice-task-card {
    position: relative;
    inset: auto;
    width: 100%;
    max-width: 100%;
    max-height: min(265px, 34dvh);
    grid-area: auto;
    align-self: stretch;
  }

  .lab-shell.phase-practice .hint-dock {
    position: relative;
    inset: auto;
    max-width: 100%;
    grid-area: auto;
    transform: none;
  }
}

@media (max-width: 860px) {
  .journey-nav-button > .journey-nav-label {
    display: none;
  }

  .journey-nav-button {
    width: 35px;
    padding-right: 0;
    padding-left: 0;
  }

  .journey-footer .journey-nav-button {
    width: auto;
    padding-right: 10px;
    padding-left: 10px;
  }

  .journey-footer .journey-nav-button > .journey-nav-label {
    display: inline;
  }
}

@media (max-width: 720px) {
  .lab-shell.phase-intro,
  .lab-shell.phase-brief,
  .lab-shell.phase-practice {
    --journey-header-height: 52px;
    --journey-footer-height: calc(58px + var(--journey-safe-bottom));
    --journey-frame-width: calc(100vw - 22px);
    grid-template-rows:
      var(--journey-header-height)
      minmax(0, 1fr)
      var(--journey-footer-height);
  }

  .lab-shell.phase-intro .journey-header,
  .lab-shell.phase-brief .journey-header,
  .lab-shell.phase-practice .journey-header {
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 6px;
    padding: 0 10px;
  }

  .lab-shell.phase-intro .journey-progress,
  .lab-shell.phase-brief .journey-progress,
  .lab-shell.phase-practice .journey-progress {
    display: flex;
    gap: 0;
  }

  .lab-shell.phase-intro .journey-header .sandbox-pill,
  .lab-shell.phase-brief .journey-header .sandbox-pill,
  .lab-shell.phase-practice .journey-header .sandbox-pill {
    display: none;
  }

  .journey-nav-button > .journey-nav-label,
  .journey-restart > .journey-nav-label {
    display: none;
  }

  .journey-footer {
    padding-right: 10px;
    padding-left: 10px;
  }

  .journey-footer-nav,
  .journey-footer .journey-nav {
    grid-template-columns: minmax(65px, 1fr) auto minmax(65px, 1fr);
    gap: 5px;
  }

  .journey-footer .journey-nav-button {
    width: auto;
    min-height: 35px;
    gap: 4px;
    padding-right: 7px;
    padding-left: 7px;
  }

  .journey-footer .journey-nav-button > .journey-nav-label {
    display: inline;
    font-size: 11px;
  }

  .lab-shell.phase-intro .journey-footer-progress,
  .lab-shell.phase-brief .journey-footer-progress,
  .lab-shell.phase-practice .journey-footer-progress {
    width: auto;
    gap: 0;
  }

  .journey-nav {
    gap: 1px;
  }

  .journey-nav-button,
  .journey-restart {
    width: 31px;
    min-height: 32px;
    gap: 0;
    padding: 0;
  }

  .journey-step-trigger {
    min-height: 31px;
    gap: 3px;
    padding-right: 5px;
    padding-left: 5px;
  }

  .journey-step-trigger > svg {
    width: 13px;
    height: 13px;
    flex-basis: 13px;
  }

  .journey-step-menu {
    position: fixed;
    top: auto;
    bottom: calc(var(--journey-footer-height) + 7px);
    right: 8px;
    left: 8px;
    width: auto;
    max-width: calc(100vw - 16px);
    max-height: min(
      410px,
      calc(100dvh - var(--journey-header-height) - var(--journey-footer-height) - 17px)
    );
    transform: none;
  }

  .lab-shell.phase-intro .journey-header .lab-brand,
  .lab-shell.phase-brief .journey-header .lab-brand,
  .lab-shell.phase-practice .journey-header .lab-brand {
    gap: 7px;
    font-size: 12px;
  }

  .journey-brand-home {
    gap: 7px;
  }

  .lab-shell.phase-intro .journey-header .lab-brand svg,
  .lab-shell.phase-brief .journey-header .lab-brand svg,
  .lab-shell.phase-practice .journey-header .lab-brand svg {
    width: 21px;
    height: 21px;
  }

  .lab-shell.phase-brief .brief-screen {
    --brief-gutter: clamp(20px, 6vw, 36px);
    align-content: start;
  }

  .lab-shell.phase-brief .brief-inner {
    width: 100%;
    padding: 0;
  }

  .lab-shell.phase-brief .brief-lesson-band {
    grid-template-columns: minmax(0, 1fr);
  }

  .lab-shell.phase-brief .brief-band-rail,
  .lab-shell.phase-brief .brief-understand .brief-band-rail {
    grid-template-columns: 24px minmax(0, 1fr);
    gap: 9px;
    padding: 17px var(--brief-gutter);
    border-right: 0;
    border-bottom: 1px solid rgb(24 25 28 / 10%);
  }

  .lab-shell.phase-brief .brief-band-content {
    gap: 10px;
    padding: 23px var(--brief-gutter) 28px;
  }

  .lab-shell.phase-brief .brief-understand .brief-band-content {
    gap: 14px;
    padding: 24px var(--brief-gutter) 32px;
  }

  .lab-shell.phase-brief .brief-main {
    grid-template-columns: minmax(0, 1fr);
    padding: 0;
  }

  .lab-shell.phase-brief .brief-hero-header {
    grid-template-columns: minmax(0, 1fr);
    padding: 41px var(--brief-gutter) 36px;
  }

  .lab-shell.phase-brief .brief-hero-visual,
  .lab-shell.phase-brief .brief-hero-art {
    display: none;
  }

  .lab-shell.phase-brief .brief-eyebrow {
    margin-bottom: 17px;
    font-size: 14px;
  }

  .lab-shell.phase-brief .brief-title {
    max-width: 12ch;
    margin-bottom: 0;
    padding-right: 0;
    font-size: clamp(44.1px, 10.17vw, 70.2px);
    letter-spacing: -0.072em;
  }

  .lab-shell.phase-brief .brief-definition,
  .lab-shell.phase-brief .brief-description {
    max-width: none;
    margin-top: 24px;
    padding: 0;
    border: 0;
    font-size: 14.4px;
    line-height: 1.58;
  }

  .lab-shell.phase-brief .brief-understand-value {
    margin-top: 4px;
    padding: 0;
  }

  .lab-shell.phase-brief .brief-foundation {
    font-size: 14px;
    line-height: 1.7;
  }

  .lab-shell.phase-brief .brief-key-distinction {
    font-size: 14px;
  }

  .lab-shell.phase-brief .brief-understand-workflow {
    gap: 13px;
    margin-top: 7px;
    padding: 0;
  }

  .lab-shell.phase-brief .brief-mechanism-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .lab-shell.phase-brief .brief-mechanism {
    min-height: 0;
    gap: 9px;
    padding: 18px 0;
  }

  .lab-shell.phase-brief .brief-mechanism:first-child {
    padding-top: 0;
  }

  .lab-shell.phase-brief .brief-mechanism:last-child {
    padding-bottom: 0;
  }

  .lab-shell.phase-brief .brief-mechanism + .brief-mechanism {
    padding-left: 0;
    border: 0;
  }

  .lab-shell.phase-brief .brief-mechanism-title {
    font-size: 14px;
  }

  .lab-shell.phase-brief .brief-mechanism-copy {
    font-size: 13px;
  }

  .lab-shell.phase-brief .brief-note-copy,
  .lab-shell.phase-brief .brief-next-copy {
    font-size: 13px;
  }

  .lab-shell.phase-practice .practice-screen {
    grid-template-areas:
      "workspace"
      "guidance";
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) auto;
    row-gap: 7px;
    padding: 11px 10px 9px;
  }

  .lab-shell.phase-practice .practice-codex-frame {
    width: 100%;
    height: 100%;
    max-height: 100%;
    min-height: 0;
    border-radius: 14px;
    box-shadow:
      0 21px 55px -29px rgb(37 36 65 / 31%),
      0 4px 16px -10px rgb(36 38 50 / 16%);
  }

  .lab-shell.phase-practice .practice-codex-frame > .workspace-panel,
  .lab-shell.phase-practice .practice-codex-frame .workspace-panel.codex-mini-live {
    display: grid;
  }

  .lab-shell.phase-practice .practice-guidance-stack {
    max-height: min(385px, 45dvh);
    gap: 7px;
  }

  .practice-task-card {
    position: relative;
    inset: auto;
    width: 100%;
    max-width: 100%;
    max-height: min(250px, 33dvh);
    grid-area: auto;
    border-radius: 12px;
  }

  .practice-task-toggle {
    min-height: 46px;
    padding-right: 12px;
    padding-left: 12px;
    font-size: 14px;
  }

  .practice-task-list {
    gap: 9px;
    padding-right: 12px;
    padding-bottom: 12px;
    padding-left: 12px;
  }

  .practice-task-success {
    gap: 3px;
    margin: 0 12px 12px;
    padding: 9px 10px;
    border-radius: 9px;
  }

  .practice-task-success-title {
    gap: 6px;
    font-size: 12px;
  }

  .practice-task-success-title > svg {
    width: 14px;
    height: 14px;
    flex-basis: 14px;
  }

  .practice-task-success-copy {
    padding-left: 20px;
    font-size: 10.5px;
  }

  .practice-task-card .practice-stage-actions {
    padding: 0 12px 12px;
  }

  .practice-task-item {
    gap: 9px;
    font-size: 12px;
    line-height: 1.5;
  }

  .practice-task-check {
    width: 18px;
    height: 18px;
    flex-basis: 18px;
  }

  .practice-task-trigger {
    grid-template-columns: 18px minmax(0, 1fr) 14px;
    column-gap: 9px;
  }

  .practice-task-detail {
    gap: 7px;
    padding-left: 27px;
  }

  .practice-task-guidance {
    font-size: 11px;
  }

  .practice-task-substeps,
  .practice-task-checks {
    padding-left: 16px;
    font-size: 11px;
  }

  .practice-task-example {
    font-size: 11px;
  }

  .hint-dock {
    position: relative;
    inset: auto;
    max-width: 100%;
    grid-area: auto;
    border-radius: 12px;
    transform: none;
  }

  .hint-toggle {
    min-height: 38px;
    padding: 0 12px;
    font-size: 11px;
  }

  .practice-learn-more {
    border-radius: 12px;
  }

  .practice-learn-more-toggle {
    min-height: 44px;
    padding-inline: 12px;
    font-size: 12px;
  }

  .practice-learn-more-content {
    gap: 7px;
    padding: 12px 12px 14px;
  }

  .practice-learn-more-title {
    font-size: 13.5px;
  }

  .practice-learn-more-summary {
    font-size: 12px;
  }

  .practice-learn-more-link {
    min-height: 40px;
  }

  .hint-content {
    width: 100%;
  }

  .practice-stage-actions {
    right: auto;
    bottom: calc(47px + var(--journey-safe-bottom));
    left: 12px;
    gap: 6px;
  }

  .practice-stage-actions .primary-button,
  .practice-stage-actions .codex-mini-course-action,
  .practice-stage-actions .codex-mini-plan-toggle,
  .practice-stage-actions .publish-pr-button {
    min-height: 36px;
    padding: 0 11px;
    font-size: 12px;
  }

  .practice-stage-actions .approval-note {
    max-width: 23ch;
    font-size: 9px;
  }

  .lab-shell.phase-practice .codex-mode-menu {
    --codex-mode-width: min(390px, calc(100vw - 16px));
    left: clamp(
      8px,
      var(--codex-mode-x, 12px),
      calc(100vw - var(--codex-mode-width) - 8px)
    );
    max-height: min(220px, calc(var(--codex-mode-y, 100vh) - var(--journey-header-height) - 9px));
    border-radius: 11px;
  }

  .codex-mode-menu-item,
  .codex-action-row {
    min-height: 37px;
    gap: 7px;
    padding: 0 8px;
  }

  .codex-action-description {
    font-size: 12px;
  }

  .completion-overlay {
    padding-right: 17px;
    padding-left: 17px;
  }

  .completion-card {
    padding: 28px 25px 27px;
    border-radius: 18px;
  }

  .journey-restart-card {
    padding: 27px 23px 24px;
    border-radius: 16px;
  }
}

@media (max-width: 440px) {
  .lab-shell.phase-intro .journey-header,
  .lab-shell.phase-brief .journey-header,
  .lab-shell.phase-practice .journey-header {
    gap: 7px;
    padding-right: 10px;
    padding-left: 10px;
  }

  .journey-brand-divider,
  .journey-brand-course {
    display: none;
  }

  .lab-shell.phase-intro .journey-step-count,
  .lab-shell.phase-brief .journey-step-count,
  .lab-shell.phase-practice .journey-step-count {
    font-size: 11px;
  }

  .journey-back {
    display: none;
  }

  .lab-shell.phase-intro .journey-actions,
  .lab-shell.phase-brief .journey-actions,
  .lab-shell.phase-practice .journey-actions {
    gap: 3px;
  }

  .lab-shell.phase-brief .brief-title {
    font-size: clamp(38.7px, 9.9vw, 47.7px);
  }

  .lab-shell.phase-brief .brief-definition,
  .lab-shell.phase-brief .brief-description {
    font-size: 14.4px;
  }

  .practice-task-card {
    inset: auto;
    width: 100%;
    max-width: 100%;
  }

  .hint-content {
    padding: 10px;
  }

  .completion-title {
    font-size: 32px;
  }
}

@media (max-width: 360px) {
  .lab-shell.phase-intro .journey-header,
  .lab-shell.phase-brief .journey-header,
  .lab-shell.phase-practice .journey-header {
    gap: 4px;
    padding-right: 5px;
    padding-left: 5px;
  }

  .journey-stage-current {
    max-width: 74px;
    overflow: hidden;
    font-size: 10px;
    text-overflow: ellipsis;
  }

  .lab-shell.phase-intro .journey-progress-label,
  .lab-shell.phase-brief .journey-progress-label,
  .lab-shell.phase-practice .journey-progress-label {
    display: none;
  }

  .lab-shell.phase-intro .journey-step-count,
  .lab-shell.phase-brief .journey-step-count,
  .lab-shell.phase-practice .journey-step-count {
    font-size: 10px;
  }

  .journey-brand-label {
    font-size: 11px;
  }

  .lab-shell.phase-intro .journey-header .lab-brand,
  .lab-shell.phase-brief .journey-header .lab-brand,
  .lab-shell.phase-practice .journey-header .lab-brand {
    justify-content: flex-start;
  }

  .lab-shell.phase-intro .journey-actions,
  .lab-shell.phase-brief .journey-actions,
  .lab-shell.phase-practice .journey-actions {
    gap: 1px;
  }

  .lab-shell.phase-practice .practice-guidance-stack {
    margin-bottom: 32px;
  }

  .journey-back,
  .journey-exit,
  .journey-nav-button,
  .journey-restart {
    width: 28px;
    min-height: 32px;
    padding-right: 0;
    padding-left: 0;
  }

  .journey-footer {
    padding-right: 5px;
    padding-left: 5px;
  }

  .journey-footer-nav,
  .journey-footer .journey-nav {
    grid-template-columns: minmax(60px, 1fr) auto minmax(60px, 1fr);
    gap: 3px;
  }

  .journey-footer .journey-nav-button {
    width: auto;
    min-height: 33px;
    gap: 3px;
    padding-right: 5px;
    padding-left: 5px;
  }

  .journey-footer .journey-nav-button > .journey-nav-label {
    display: inline;
    font-size: 10px;
  }

  .journey-nav-button > svg,
  .journey-restart > svg {
    width: 15px;
    height: 15px;
    flex-basis: 15px;
  }

  .journey-step-trigger {
    gap: 2px;
    padding-right: 3px;
    padding-left: 3px;
  }

  .practice-task-card {
    inset: auto;
    width: 100%;
    max-width: 100%;
  }

  .practice-learn-more-content {
    padding-right: 11px;
    padding-left: 11px;
  }

  .practice-learn-more-eyebrow {
    font-size: 10px;
  }
}

@media (max-height: 760px) and (min-width: 721px) {
  .lab-shell.phase-brief .brief-hero-header {
    padding-top: 46px;
    padding-bottom: 42px;
  }

  .lab-shell.phase-brief .brief-understand .brief-band-rail {
    padding-top: 34px;
  }

  .lab-shell.phase-brief .brief-understand .brief-band-content {
    padding-top: 32px;
    padding-bottom: 38px;
  }

  .lab-shell.phase-brief .brief-eyebrow {
    margin-bottom: 21px;
  }

  .lab-shell.phase-brief .brief-title {
    font-size: clamp(84.24px, 8.046vw, 105.84px);
  }

  .lab-shell.phase-brief .brief-definition,
  .lab-shell.phase-brief .brief-description {
    font-size: 15.36px;
  }

  .lab-shell.phase-brief .brief-note-copy,
  .lab-shell.phase-brief .brief-next-copy {
    font-size: 14px;
  }
}

/* Keep the learning experience aligned with ChatGPT Learn's quieter scale. */

.lab-shell.phase-brief .brief-title {
  font-size: clamp(48px, 5.8vw, 76px);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.lab-shell.phase-brief .brief-hero-header {
  column-gap: clamp(28px, 4vw, 56px);
  padding: clamp(48px, 7.4vh, 72px) clamp(38px, 5.6vw, 80px)
    clamp(42px, 6.2vh, 62px);
}

.lab-shell.phase-brief .brief-definition,
.lab-shell.phase-brief .brief-description {
  margin-top: 21px;
  font-size: clamp(15px, 1.15vw, 16px);
  line-height: 1.65;
}

.journey-footer .journey-footer-back,
.journey-footer .journey-footer-next {
  border-radius: 999px;
}

.lab-shell.phase-intro .journey-header .journey-theme,
.lab-shell.phase-brief .journey-header .journey-theme,
.lab-shell.phase-practice .journey-header .journey-theme {
  display: inline-grid;
  width: 34px;
  min-width: 34px;
  height: 34px;
  min-height: 34px;
  flex: 0 0 34px;
  place-items: center;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--journey-muted);
}

.lab-shell.phase-intro .journey-header .journey-theme:hover,
.lab-shell.phase-brief .journey-header .journey-theme:hover,
.lab-shell.phase-practice .journey-header .journey-theme:hover {
  background: rgb(24 25 28 / 5%);
  color: var(--journey-ink);
}

.lab-shell.phase-intro .journey-header .journey-theme > svg,
.lab-shell.phase-brief .journey-header .journey-theme > svg,
.lab-shell.phase-practice .journey-header .journey-theme > svg {
  width: 17px;
  height: 17px;
}

/* ChatGPT Learn uses black surfaces; Codex elevates its workspace to #181818. */

html[data-theme="dark"] .lab-shell.phase-intro,
html[data-theme="dark"] .lab-shell.phase-brief,
html[data-theme="dark"] .lab-shell.phase-practice {
  --journey-ink: var(--ink-strong, #fff);
  --journey-muted: var(--ink-secondary, #b9b9b9);
  --journey-faint: var(--ink-tertiary, #8f8f8f);
  --journey-paper: var(--surface, #000);
  --journey-canvas: var(--surface-secondary, #181818);
  --journey-line: var(--line, rgb(255 255 255 / 8%));
  --journey-line-strong: var(--line-strong, rgb(255 255 255 / 14%));
  --journey-accent: #ad7bf9;
  --journey-accent-soft: rgb(173 123 249 / 14%);
  --journey-green: #40c977;
  background: var(--journey-paper);
  color: var(--journey-ink);
  color-scheme: dark;
}

html[data-theme="dark"] .lab-shell.phase-intro .journey-header,
html[data-theme="dark"] .lab-shell.phase-brief .journey-header,
html[data-theme="dark"] .lab-shell.phase-practice .journey-header {
  background: rgb(0 0 0 / 91%);
}

html[data-theme="dark"] .lab-shell.phase-intro .journey-footer,
html[data-theme="dark"] .lab-shell.phase-brief .journey-footer,
html[data-theme="dark"] .lab-shell.phase-practice .journey-footer {
  background: rgb(0 0 0 / 95%);
}

html[data-theme="dark"] .lab-shell .journey-header .journey-theme:hover,
html[data-theme="dark"] .lab-shell .journey-step-trigger:hover,
html[data-theme="dark"] .lab-shell .journey-step-trigger[aria-expanded="true"],
html[data-theme="dark"] .lab-shell .journey-step-option:hover,
html[data-theme="dark"] .lab-shell .journey-step-option:focus-visible,
html[data-theme="dark"] .lab-shell .journey-nav-button:hover:not(:disabled),
html[data-theme="dark"] .lab-shell .journey-restart:hover,
html[data-theme="dark"] .lab-shell .journey-back:hover,
html[data-theme="dark"] .lab-shell .journey-exit:hover {
  background: rgb(255 255 255 / 7%);
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell .journey-step-menu {
  border-color: var(--journey-line-strong);
  background: var(--journey-canvas);
  box-shadow:
    0 18px 44px -24px rgb(0 0 0 / 74%),
    0 3px 12px -7px rgb(0 0 0 / 54%);
}

html[data-theme="dark"] .lab-shell .journey-step-option.is-current {
  background: var(--journey-accent-soft);
}

html[data-theme="dark"] .lab-shell .journey-progress .progress-bar,
html[data-theme="dark"] .lab-shell .journey-progress-track,
html[data-theme="dark"] .lab-shell .journey-footer .journey-progress-track {
  background: rgb(255 255 255 / 12%);
}

html[data-theme="dark"] .lab-shell .journey-next:not(:disabled) {
  border-color: var(--journey-line-strong);
  background: var(--surface-tertiary, #212121);
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back,
html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-next {
  border-color: var(--button-dark, #f3f3f3);
  background: var(--button-dark, #f3f3f3);
  color: var(--button-foreground, #0d0d0d);
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back > svg,
html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-next > svg {
  color: var(--button-foreground, #0d0d0d);
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back:hover:not(:disabled),
html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-next:hover:not(:disabled) {
  border-color: #fff;
  background: #fff;
  color: var(--button-foreground, #0d0d0d);
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back:not(:disabled) {
  border-color: var(--journey-line-strong);
  background: var(--journey-canvas);
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back:not(:disabled) > svg {
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back:hover:not(:disabled) {
  border-color: rgb(255 255 255 / 20%);
  background: var(--surface-tertiary, #212121);
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back:disabled,
html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-next:disabled {
  border-color: #393939;
  background: #393939;
  color: #9f9f9f;
}

html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-back:disabled > svg,
html[data-theme="dark"] .lab-shell .journey-footer .journey-footer-next:disabled > svg {
  color: #9f9f9f;
}

html[data-theme="dark"] .lab-shell .journey-header .sandbox-pill {
  border-color: var(--journey-line);
  background: var(--surface-tertiary, #212121);
}

html[data-theme="dark"] .lab-shell.phase-brief .brief-screen {
  --brief-rule: rgb(255 255 255 / 12%);
  background: var(--journey-paper);
  scrollbar-color: rgb(255 255 255 / 22%) transparent;
}

html[data-theme="dark"] .lab-shell.phase-brief .brief-band-rail {
  border-color: var(--brief-rule);
}

html[data-theme="dark"] .lab-shell.phase-brief .brief-hero-visual,
html[data-theme="dark"] .lab-shell.phase-brief .brief-hero-art {
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell.phase-brief .brief-example-prompt {
  text-decoration-color: rgb(255 255 255 / 31%);
}

html[data-theme="dark"] .lab-shell.phase-brief .brief-example-prompt:hover {
  text-decoration-color: rgb(255 255 255 / 78%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-screen {
  background: #000;
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-codex-frame {
  border-color: var(--journey-line-strong);
  background: var(--codex-paper, #181818);
  box-shadow:
    0 45px 100px -40px rgb(0 0 0 / 64%),
    0 17px 38px -21px rgb(0 0 0 / 48%),
    0 1px 2px rgb(0 0 0 / 28%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-guidance-stack {
  scrollbar-color: rgb(255 255 255 / 22%) transparent;
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-card,
html[data-theme="dark"] .lab-shell.phase-practice .hint-dock,
html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more {
  border-color: var(--journey-line-strong);
  background: var(--journey-canvas);
  box-shadow:
    0 18px 40px -24px rgb(0 0 0 / 62%),
    0 3px 11px -6px rgb(0 0 0 / 42%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-linear-card {
  border-color: var(--journey-line-strong);
  background: var(--journey-canvas);
  box-shadow:
    0 18px 40px -24px rgb(0 0 0 / 62%),
    0 3px 11px -6px rgb(0 0 0 / 42%);
}

html[data-theme="dark"] .practice-linear-key {
  color: #b6c2cf;
}

html[data-theme="dark"] .practice-linear-status {
  background: rgb(87 157 255 / 18%);
  color: #85b8ff;
}

html[data-theme="dark"] .practice-linear-priority {
  background: rgb(255 116 82 / 17%);
  color: #ff9c8f;
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-toggle:hover,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-example:hover {
  background: rgb(255 255 255 / 6%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-progress,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-detail code {
  background: var(--surface-tertiary, #212121);
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-toggle svg,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item svg,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-chevron {
  color: var(--journey-faint);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item {
  color: var(--journey-muted);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-check {
  border-color: rgb(255 255 255 / 32%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item.is-active:not(.is-complete) .practice-task-check,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item[data-active="true"]:not(.is-complete) .practice-task-check {
  border-color: rgb(255 255 255 / 56%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item.is-complete,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item[data-complete="true"],
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item.check-pass,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item.is-complete svg,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item[data-complete="true"] svg,
html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item.check-pass svg {
  color: var(--journey-green);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-item.is-complete .practice-task-check {
  border-color: rgb(64 201 119 / 42%);
  background: rgb(64 201 119 / 13%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-example,
html[data-theme="dark"] .lab-shell.phase-practice .hint-prompt-chip {
  border-color: var(--journey-line-strong);
  background: var(--surface-tertiary, #212121);
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell.phase-practice .hint-prompt-chip:hover,
html[data-theme="dark"] .lab-shell.phase-practice .hint-toggle:hover,
html[data-theme="dark"] .lab-shell.phase-practice .hint-toggle[aria-expanded="true"] {
  border-color: rgb(173 123 249 / 35%);
  background: var(--journey-accent-soft);
  color: var(--journey-accent);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-toggle,
html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-toggle:hover,
html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-toggle[aria-expanded="true"] {
  color: var(--journey-muted);
  text-decoration: none;
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-toggle:hover,
html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-toggle[aria-expanded="true"] {
  border-bottom-color: var(--journey-line-strong);
  background: rgb(255 255 255 / 5%);
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-summary {
  color: #dedede;
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-link {
  color: #8ab8ee;
  text-decoration-color: rgb(138 184 238 / 54%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-link:hover,
html[data-theme="dark"] .lab-shell.phase-practice .practice-learn-more-link:focus-visible {
  color: #b7d5f6;
  text-decoration-color: currentColor;
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-success {
  border-color: rgb(64 201 119 / 22%);
  background: rgb(64 201 119 / 11%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-task-success-copy {
  color: rgb(140 223 173 / 82%);
}

html[data-theme="dark"] .lab-shell.phase-practice .practice-stage-validation {
  color: #ffb790;
}

html[data-theme="dark"] .lab-shell.phase-practice .codex-mode-menu {
  background: var(--surface-tertiary, #212121);
  box-shadow:
    0 0 0 0.5px rgb(255 255 255 / 14%),
    0 8px 16px -4px rgb(0 0 0 / 48%);
  color: var(--journey-ink);
  scrollbar-color: rgb(255 255 255 / 23%) transparent;
}

html[data-theme="dark"] .lab-shell.phase-practice .codex-mode-menu-item,
html[data-theme="dark"] .lab-shell.phase-practice .codex-action-row,
html[data-theme="dark"] .lab-shell.phase-practice .codex-action-label {
  color: var(--journey-ink);
}

html[data-theme="dark"] .lab-shell.phase-practice .codex-action-icon,
html[data-theme="dark"] .lab-shell.phase-practice .codex-action-description {
  color: var(--journey-muted);
}

html[data-theme="dark"] .lab-shell.phase-practice .codex-mode-menu-item:hover,
html[data-theme="dark"] .lab-shell.phase-practice .codex-mode-menu-item:focus-visible,
html[data-theme="dark"] .lab-shell.phase-practice .codex-action-row:hover,
html[data-theme="dark"] .lab-shell.phase-practice .codex-action-row:focus-visible {
  background: rgb(255 255 255 / 8%);
}

html[data-theme="dark"] .lab-shell .completion-overlay,
html[data-theme="dark"] .lab-shell .journey-restart-dialog {
  background: rgb(0 0 0 / 68%);
}

html[data-theme="dark"] .lab-shell .completion-card,
html[data-theme="dark"] .lab-shell .journey-restart-card {
  border-color: var(--journey-line-strong);
  background: var(--journey-canvas);
  box-shadow:
    0 30px 75px -33px rgb(0 0 0 / 74%),
    0 8px 21px -14px rgb(0 0 0 / 58%);
}

html[data-theme="dark"] .lab-shell .completion-task-summary {
  border-color: var(--journey-line);
  background: var(--surface-tertiary, #212121);
}

html[data-theme="dark"] .lab-shell .completion-icon,
html[data-theme="dark"] .lab-shell .completion-mark {
  background: rgb(64 201 119 / 14%);
}

html[data-theme="dark"] .lab-shell .journey-restart-confirm,
html[data-theme="dark"] .lab-shell .completion-next,
html[data-theme="dark"] .lab-shell .completion-open,
html[data-theme="dark"] .lab-shell .practice-stage-actions .primary-button,
html[data-theme="dark"] .lab-shell .practice-stage-actions .publish-pr-button {
  background: var(--button-dark, #f3f3f3);
  color: var(--button-foreground, #0d0d0d);
}

html[data-theme="dark"] .lab-shell .journey-restart-confirm:hover,
html[data-theme="dark"] .lab-shell .completion-next:hover,
html[data-theme="dark"] .lab-shell .completion-open:hover {
  background: #fff;
}

html[data-theme="dark"] .lab-shell .journey-restart-cancel {
  border-color: var(--journey-line-strong);
}

html[data-theme="dark"] .lab-shell .journey-restart-cancel:hover,
html[data-theme="dark"] .lab-shell .completion-stay:hover {
  background: rgb(255 255 255 / 7%);
}

html[data-theme="dark"] .lab-shell.phase-intro :focus-visible,
html[data-theme="dark"] .lab-shell.phase-brief :focus-visible,
html[data-theme="dark"] .lab-shell.phase-practice :focus-visible {
  outline-color: var(--journey-accent);
}

@media (max-width: 720px) {
  .lab-shell.phase-brief .brief-hero-header {
    padding: 36px var(--brief-gutter) 32px;
  }

  .lab-shell.phase-brief .brief-title {
    font-size: clamp(40px, 9vw, 58px);
    letter-spacing: -0.045em;
    line-height: 1.07;
  }

  .lab-shell.phase-brief .brief-definition,
  .lab-shell.phase-brief .brief-description {
    margin-top: 18px;
    font-size: 14.5px;
    line-height: 1.6;
  }

  .lab-shell.phase-brief .journey-header .journey-theme,
  .lab-shell.phase-practice .journey-header .journey-theme {
    width: 30px;
    min-width: 30px;
    height: 32px;
    min-height: 32px;
    flex-basis: 30px;
  }

  html[data-theme="dark"] .lab-shell.phase-brief .brief-band-rail {
    border-bottom-color: var(--brief-rule);
  }
}

@media (max-width: 440px) {
  .lab-shell.phase-brief .brief-title {
    font-size: clamp(36px, 10vw, 44px);
    letter-spacing: -0.04em;
  }
}

@media (max-width: 360px) {
  .lab-shell.phase-brief .journey-header,
  .lab-shell.phase-practice .journey-header {
    gap: 3px;
  }

  .lab-shell.phase-brief .journey-header .journey-theme,
  .lab-shell.phase-practice .journey-header .journey-theme {
    width: 28px;
    min-width: 28px;
    height: 30px;
    min-height: 30px;
    flex-basis: 28px;
  }

  .lab-shell.phase-brief .journey-header .journey-theme > svg,
  .lab-shell.phase-practice .journey-header .journey-theme > svg {
    width: 16px;
    height: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lab-shell.phase-brief .brief-hero-visual *,
  .lab-shell.phase-brief .brief-hero-svg *,
  .lab-shell.phase-brief .brief-network-svg * {
    animation: none !important;
    transition: none !important;
  }

  .lab-shell.phase-brief *,
  .lab-shell.phase-practice *,
  .lab-shell.phase-brief *::before,
  .lab-shell.phase-practice *::before,
  .lab-shell.phase-brief *::after,
  .lab-shell.phase-practice *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}