.qstate-lab {
  --qstate-ink: #173140;
  --qstate-muted: #58707e;
  --qstate-line: #bfd0da;
  --qstate-paper: #f4f7f8;
  --qstate-panel: #ffffff;
  --qstate-accent: #be543b;
  --qstate-accent-dark: #8f2f23;
  --qstate-secondary: #2d7189;
  margin: 2.5rem 0;
  padding: clamp(1rem, 3vw, 2rem);
  border: 1px solid var(--qstate-line);
  border-radius: 1rem;
  color: var(--qstate-ink);
  background: linear-gradient(145deg, #ffffff 0%, var(--qstate-paper) 100%);
  box-shadow: 0 1.25rem 3rem rgba(23, 49, 64, 0.10);
}

.qstate-lab *,
.qstate-lab *::before,
.qstate-lab *::after {
  box-sizing: border-box;
}

.qstate-lab__heading {
  max-width: 52rem;
}

.qstate-lab__heading h2,
.qstate-lab__visual h3,
.qstate-lab__card h3,
.qstate-lab__explanation h3 {
  color: var(--qstate-ink);
}

.qstate-lab__heading h2 {
  margin: 0.2rem 0 0.8rem;
}

.qstate-lab__heading p:last-child {
  color: var(--qstate-muted);
  line-height: 1.7;
}

.qstate-lab__eyebrow {
  margin: 0;
  color: var(--qstate-accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.qstate-lab__formula {
  margin: 1.35rem 0;
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid var(--qstate-line);
  border-radius: 0.75rem;
  background: #eef4f7;
  color: var(--qstate-ink);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(1rem, 2.5vw, 1.34rem);
  text-align: center;
  white-space: nowrap;
}

.qstate-lab__layout {
  display: grid;
  grid-template-columns: minmax(15rem, 0.8fr) minmax(18rem, 1.5fr);
  gap: 1.25rem;
  align-items: stretch;
}

.qstate-lab__controls,
.qstate-lab__visual,
.qstate-lab__card,
.qstate-lab__explanation {
  border: 1px solid var(--qstate-line);
  border-radius: 0.85rem;
  background: var(--qstate-panel);
}

.qstate-lab__controls,
.qstate-lab__visual {
  padding: 1.15rem;
}

.qstate-lab__control + .qstate-lab__control {
  margin-top: 1.15rem;
}

.qstate-lab__control label {
  display: block;
  margin-bottom: 0.45rem;
  font-weight: 700;
}

.qstate-lab__control input[type='range'] {
  width: 100%;
  accent-color: var(--qstate-accent);
}

.qstate-lab__control output {
  display: inline-block;
  min-width: 4.5rem;
  margin-top: 0.25rem;
  color: var(--qstate-accent-dark);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}

.qstate-lab__basis {
  margin-inline: 0;
  padding: 0.75rem;
  border: 1px solid var(--qstate-line);
  border-radius: 0.6rem;
}

.qstate-lab__basis legend {
  padding: 0 0.25rem;
  font-weight: 700;
}

.qstate-lab__basis label {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin: 0.45rem 0 0;
  font-weight: 500;
}

.qstate-lab__basis input {
  accent-color: var(--qstate-accent);
}

.qstate-lab__actions {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.4rem;
}

.qstate-lab__actions button {
  min-height: 2.75rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--qstate-accent-dark);
  border-radius: 0.55rem;
  color: #ffffff;
  background: var(--qstate-accent-dark);
  font-weight: 750;
  cursor: pointer;
}

.qstate-lab__actions button + button {
  color: var(--qstate-ink);
  background: #ffffff;
  border-color: #8ea4b1;
}

.qstate-lab__actions button:hover,
.qstate-lab__actions button:focus-visible {
  filter: brightness(1.08);
  outline: 3px solid rgba(45, 113, 137, 0.28);
  outline-offset: 2px;
}

.qstate-lab__visual h3 {
  margin-top: 0;
}

.qstate-lab__visual canvas {
  display: block;
  width: 100%;
  min-height: 20rem;
  border-radius: 0.65rem;
  background: #f8fbfc;
}

.qstate-lab__coordinates,
.qstate-lab__math {
  overflow-wrap: anywhere;
  color: var(--qstate-accent-dark);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.06rem;
  text-align: center;
}

.qstate-lab__results {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.qstate-lab__card {
  padding: 1rem;
}

.qstate-lab__card h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.qstate-lab__card dl {
  margin: 0.75rem 0 0;
}

.qstate-lab__card dl div {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.48rem 0;
  border-top: 1px solid #dce6eb;
}

.qstate-lab__card dt {
  color: var(--qstate-muted);
}

.qstate-lab__card dd {
  margin: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.qstate-lab__probability {
  display: grid;
  grid-template-columns: 3.7rem 1fr 4.7rem;
  gap: 0.55rem;
  align-items: center;
  margin: 0.75rem 0;
  font-size: 0.9rem;
}

.qstate-lab__probability strong {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.qstate-lab__bar {
  height: 0.72rem;
  overflow: hidden;
  border-radius: 999px;
  background: #dce6eb;
}

.qstate-lab__bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--qstate-accent);
  transition: width 160ms ease-out;
}

.qstate-lab__probability:nth-of-type(2) .qstate-lab__bar span {
  background: var(--qstate-secondary);
}

.qstate-lab__note,
#qstate-sample-status {
  color: var(--qstate-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.qstate-lab__explanation {
  margin-top: 1rem;
  padding: 1rem 1.15rem;
}

.qstate-lab__explanation h3 {
  margin-top: 0;
}

.qstate-lab__explanation ul {
  margin-bottom: 0;
  padding-left: 1.25rem;
}

.qstate-lab__explanation li + li {
  margin-top: 0.55rem;
}

@media (max-width: 850px) {
  .qstate-lab__layout,
  .qstate-lab__results {
    grid-template-columns: 1fr;
  }

  .qstate-lab__visual canvas {
    min-height: 17rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .qstate-lab__bar span {
    transition: none;
  }
}