:root {
  color-scheme: light dark;
  --bg: #f9f9f9;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --surface-soft: #f3faff;
  --text: #10263f;
  --text-muted: #355a78;
  --text-faint: #52728d;
  --border: #b9daf2;
  --border-strong: #78acd0;
  --accent: #1d6fa8;
  --accent-strong: #145a8a;
  --accent-soft: #eef8ff;
  --teal: #1f7a58;
  --teal-soft: #edf9f3;
  --blue: #a3204c;
  --blue-soft: #fff0f5;
  --success: #1f7a58;
  --success-soft: #edf9f3;
  --warning: #8a6500;
  --warning-soft: #fff8d5;
  --danger: #b42318;
  --danger-soft: #fff2f0;
  --glow-primary: rgba(127, 200, 248, 0.68);
  --glow-secondary: rgba(255, 99, 146, 0.42);
  --glow-sunshine: rgba(255, 228, 94, 0.66);
  --shadow: 0 8px 26px rgba(15, 56, 120, 0.09);
  --shadow-small: 0 4px 14px rgba(15, 56, 120, 0.08);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #081521;
    --surface: #10263f;
    --surface-raised: #16324d;
    --surface-soft: #0c1f33;
    --text: #f5fbff;
    --text-muted: #a9c7dc;
    --text-faint: #87aac2;
    --border: #315b78;
    --border-strong: #4f7fa1;
    --accent: #7fc8f8;
    --accent-strong: #a9ddff;
    --accent-soft: #133452;
    --teal: #72d7ad;
    --teal-soft: #123829;
    --blue: #ff9abd;
    --blue-soft: #3a1629;
    --success: #72d7ad;
    --success-soft: #123829;
    --warning: #ffe45e;
    --warning-soft: #332f14;
    --danger: #ffb4ab;
    --danger-soft: #3b1c20;
    --glow-primary: rgba(127, 200, 248, 0.17);
    --glow-secondary: rgba(255, 99, 146, 0.13);
    --glow-sunshine: rgba(255, 228, 94, 0.1);
    --shadow: 0 16px 42px rgba(0, 0, 0, 0.32);
    --shadow-small: 0 4px 14px rgba(0, 0, 0, 0.22);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 12% 0%, var(--glow-primary) 0, transparent 34%),
    radial-gradient(circle at 90% 2%, var(--glow-sunshine) 0, transparent 28%),
    radial-gradient(circle at 86% 8%, var(--glow-secondary) 0, transparent 22%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

a {
  color: var(--accent-strong);
}

.sr-only {
  position: absolute;
  overflow: hidden;
  width: 1px;
  height: 1px;
  padding: 0;
  border: 0;
  margin: -1px;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-180%);
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--surface);
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 2rem));
  min-height: 58px;
  margin: 0 auto;
}

.back-link,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 38px;
  padding: 0.5rem 0.72rem;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--text-muted);
  font-size: 0.87rem;
  font-weight: 650;
  text-decoration: none;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease;
}

.back-link:hover,
.button:hover {
  border-color: var(--border);
  background: var(--surface-soft);
  color: var(--text);
}

.button:active {
  transform: translateY(1px);
}

.button-quiet {
  background: transparent;
}

.header-actions {
  display: flex;
  gap: 0.25rem;
}

.page-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3.1rem 0 2.4rem;
}

.intro {
  max-width: 780px;
  margin-bottom: 2rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  margin-bottom: 0.7rem;
  color: var(--accent-strong);
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 0.8rem;
  font-size: clamp(2.15rem, 5vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: -0.048em;
  background: linear-gradient(110deg, var(--text) 12%, var(--accent-strong) 66%, var(--blue));
  background-clip: text;
  color: transparent;
}

.intro p {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--text-muted);
  font-size: clamp(1rem, 2vw, 1.13rem);
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(410px, 1.08fr);
  gap: 1.25rem;
  align-items: start;
}

.controls,
.results {
  display: grid;
  gap: 1rem;
}

.results {
  position: sticky;
  top: 1rem;
}

.panel {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-small);
}

.panel::before {
  position: absolute;
  top: 0;
  right: 1.1rem;
  left: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--blue), var(--warning), transparent 94%);
  content: "";
  pointer-events: none;
}

.control-panel {
  padding: 1.25rem;
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.1rem;
}

.panel-heading h2 {
  margin-bottom: 0.12rem;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.panel-heading p {
  margin-bottom: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.step-number {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 27px;
  height: 27px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 850;
}

.field {
  display: grid;
  gap: 0.42rem;
  min-width: 0;
}

.field-label {
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 750;
}

.optional {
  color: var(--text-faint);
  font-size: 0.69rem;
  font-weight: 600;
}

input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  outline: none;
  background: var(--surface-raised);
  color: var(--text);
  padding: 0.65rem 0.72rem;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

select {
  padding-right: 2.2rem;
}

input:focus,
select:focus,
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}

input[aria-invalid="true"],
select[aria-invalid="true"] {
  border-color: var(--danger);
}

.input-with-unit.has-error {
  border-color: var(--danger);
}

.validation-note {
  margin: -0.35rem 0 0;
  color: var(--danger);
  font-size: 0.78rem;
  font-weight: 700;
}

.input-with-unit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--surface-raised);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.input-with-unit:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}

.input-with-unit input {
  min-width: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.input-with-unit input:focus {
  box-shadow: none;
}

.input-with-unit > span {
  padding: 0 0.72rem 0 0.35rem;
  color: var(--text-faint);
  font-size: 0.74rem;
  font-weight: 750;
  white-space: nowrap;
}

.field-help {
  color: var(--text-faint);
  font-size: 0.73rem;
}

.field-grid {
  display: grid;
  gap: 0.9rem;
}

.two-columns {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-span-two {
  grid-column: 1 / -1;
}

.comparison-grid {
  grid-template-columns: minmax(0, 1.5fr) minmax(140px, 0.7fr);
}

.model-settings {
  margin-top: 1rem;
}

.custom-fields {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.check-field {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 0.55rem;
  color: var(--text-muted);
  font-size: 0.77rem;
}

.check-field input {
  width: 1rem;
  min-height: auto;
  height: 1rem;
  accent-color: var(--accent);
}

.preset-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.72rem;
}

.summary-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.52rem;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 700;
}

.summary-pill i {
  color: var(--accent);
}

.preset-details {
  flex-basis: 100%;
  margin-top: 0.12rem;
}

.preset-details > summary {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0;
  cursor: pointer;
  color: var(--text-faint);
  font-size: 0.68rem;
  font-weight: 700;
}

.preset-details > summary i:first-child {
  color: var(--accent);
}

.preset-chevron {
  font-size: 0.58rem;
  transition: transform 150ms ease;
}

.preset-details[open] .preset-chevron {
  transform: rotate(180deg);
}

.preset-note {
  margin: 0.15rem 0 0;
  color: var(--text-faint);
  font-size: 0.72rem;
}

.preset-note a,
.source-note a {
  font-weight: 700;
  text-underline-offset: 2px;
}

.quick-values {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.75rem;
  color: var(--text-faint);
  font-size: 0.7rem;
}

.quick-values button {
  min-width: 42px;
  min-height: 36px;
  padding: 0.28rem 0.48rem;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface-soft);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 750;
}

.quick-values button:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.source-note {
  margin: 0.8rem 0 0;
  color: var(--text-faint);
  font-size: 0.72rem;
}

details > summary {
  list-style: none;
}

details > summary::-webkit-details-marker {
  display: none;
}

.advanced-panel > summary,
.memory-panel > summary,
.cloud-panel > summary,
.math-panel > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 54px;
  padding: 0.85rem 1.15rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 760;
}

.advanced-panel > summary span,
.memory-panel > summary span,
.cloud-panel > summary span,
.math-panel > summary span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.chevron {
  font-size: 0.7rem;
  transition: transform 150ms ease;
}

details[open] .chevron {
  transform: rotate(180deg);
}

.cloud-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(150px, 0.35fr);
  gap: 0.8rem;
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--border);
}

.cloud-content .speed-comparison {
  align-self: center;
}

.cloud-result {
  display: grid;
  align-content: center;
  min-width: 0;
  padding: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.cloud-result strong {
  margin: 0.15rem 0 0.08rem;
  font-size: 1.15rem;
}

.cloud-result small {
  color: var(--text-muted);
  font-size: 0.68rem;
}

.advanced-content,
.math-content {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--border);
}

.advanced-content .field-grid {
  padding-top: 1rem;
}

.advanced-note {
  margin: 0.9rem 0 0;
  color: var(--text-faint);
  font-size: 0.72rem;
}

.result-hero {
  position: relative;
  overflow: hidden;
  padding: 1.45rem;
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  box-shadow: var(--shadow);
}

.result-hero::after {
  position: absolute;
  z-index: 0;
  top: -100px;
  right: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  content: "";
  pointer-events: none;
}

.result-hero > * {
  position: relative;
  z-index: 1;
}

.result-heading-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.result-eyebrow {
  margin-bottom: 0.35rem;
}

.result-heading-row h2 {
  margin-bottom: 0;
  font-size: clamp(2.55rem, 7vw, 4.4rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.result-heading-row h2 small {
  color: var(--text-muted);
  font-size: 0.28em;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.hero-badges {
  display: grid;
  justify-items: end;
  gap: 0.42rem;
}

.fit-badge,
.limit-badge {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.35rem;
  padding: 0.42rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 800;
}

.fit-badge {
  background: var(--success-soft);
  color: var(--success);
}

.limit-badge {
  background: var(--teal-soft);
  color: var(--teal);
}

.fit-badge.does-not-fit { 
  background: var(--danger-soft);
  color: var(--danger);
}

.hero-explanation {
  max-width: 570px;
  margin: 1rem 0 0.45rem;
  color: var(--text-muted);
  font-size: 0.86rem;
}

.result-guidance {
  max-width: 570px;
  margin: 0;
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 700;
}

.speed-comparison {
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.speed-labels {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.52rem;
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 750;
}

.speed-track {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: var(--border);
}

.speed-bar {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--accent));
  transition: width 220ms ease;
}

.cloud-marker {
  position: absolute;
  top: -4px;
  left: 100%;
  width: 3px;
  height: 16px;
  border-radius: 3px;
  background: var(--text);
  transform: translateX(-2px);
  transition: left 220ms ease;
}

.speed-comparison p {
  margin: 0.58rem 0 0;
  color: var(--text-muted);
  font-size: 0.73rem;
}

.core-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.metric-card {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  min-width: 0;
  padding: 1rem;
}

.metric-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.83rem;
}

.metric-card > div:last-child {
  display: grid;
  min-width: 0;
}

.metric-label {
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0;
}

.metric-card strong {
  overflow: hidden;
  margin: 0.12rem 0 0.05rem;
  font-size: 1.2rem;
  letter-spacing: -0.025em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metric-card small {
  overflow: hidden;
  color: var(--text-muted);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metric-driver {
  margin: 0.45rem 0 0;
  color: var(--text-faint);
  font-size: 0.68rem;
  line-height: 1.35;
}

.capacity-card .metric-icon {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.bandwidth-card .metric-icon {
  background: var(--teal-soft);
  color: var(--teal);
}

.compute-card .metric-icon {
  background: var(--blue-soft);
  color: var(--blue);
}

.memory-content {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--border);
}

.memory-title {
  margin: 0;
  padding-top: 1rem;
  color: var(--text-muted);
  font-size: 0.72rem;
}

.memory-summary-value {
  margin-left: auto;
  margin-right: 0.8rem;
  color: var(--text-muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.section-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.section-title-row h3 {
  margin-bottom: 0.12rem;
  font-size: 0.92rem;
}

.section-title-row p {
  margin-bottom: 0;
  color: var(--text-muted);
  font-size: 0.72rem;
}

.section-title-row > strong {
  color: var(--text-muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.memory-bar {
  display: flex;
  overflow: hidden;
  height: 13px;
  margin: 1rem 0 0.72rem;
  border-radius: 999px;
  background: var(--surface-soft);
  box-shadow: inset 0 0 0 1px var(--border);
}

.memory-segment {
  min-width: 0;
  width: 0;
  transition: width 220ms ease;
}

.weights-segment {
  background: var(--accent);
}

.kv-segment {
  background: var(--teal);
}

.memory-bar.over-capacity {
  box-shadow: inset 0 0 0 2px var(--danger);
}

.memory-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.52rem 1rem;
  color: var(--text-muted);
  font-size: 0.69rem;
}

.memory-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.memory-legend strong {
  color: var(--text);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

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

.kv-dot {
  background: var(--teal);
}

.free-dot {
  border: 1px solid var(--border-strong);
  background: var(--surface-soft);
}

.math-panel {
  box-shadow: none;
}

.math-content {
  padding-top: 1rem;
}

.math-list {
  display: grid;
  gap: 0;
  margin: 0;
}

.math-list > div {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 1rem;
  padding: 0.58rem 0;
  border-bottom: 1px solid var(--border);
}

.math-list dt {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.math-list dd {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.7rem;
  text-align: right;
}

.assumption-box {
  margin-top: 1rem;
  padding: 0.9rem;
  border-radius: var(--radius-md);
  background: var(--warning-soft);
  color: var(--warning);
  font-size: 0.71rem;
}

.assumption-box ul {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
}

.assumption-box li + li {
  margin-top: 0.28rem;
}

.method-note {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  max-width: 880px;
  margin: 1.4rem auto 0;
  padding: 0.9rem 1rem;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.method-note i {
  margin-top: 0.16rem;
  color: var(--accent);
}

.method-note p {
  margin-bottom: 0;
}

.toast {
  position: fixed;
  z-index: 50;
  right: 1rem;
  bottom: 1rem;
  transform: translateY(calc(100% + 2rem));
  padding: 0.68rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--text);
  color: var(--surface);
  box-shadow: var(--shadow);
  font-size: 0.78rem;
  font-weight: 700;
  opacity: 0;
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.visible {
  transform: translateY(0);
  opacity: 1;
}

.site-footer {
  width: min(980px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 0 0 2.2rem;
  color: var(--text-faint);
  font-size: 0.7rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 920px) {
  .calculator-layout {
    grid-template-columns: 1fr;
  }

  .results {
    position: static;
  }
}

@media (max-width: 620px) {
  .header-inner,
  .page-shell {
    width: min(100% - 1.15rem, 1180px);
  }

  .page-shell {
    padding-top: 2.1rem;
  }

  .header-actions .button span,
  .back-link span {
    position: absolute;
    overflow: hidden;
    width: 1px;
    height: 1px;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
  }

  .back-link,
  .button {
    width: 38px;
    padding: 0;
  }

  h1 {
    font-size: clamp(2.05rem, 11vw, 3rem);
  }

  .two-columns,
  .comparison-grid,
  .core-metrics,
  .cloud-content {
    grid-template-columns: 1fr;
  }

  .field-span-two,
  .check-field {
    grid-column: auto;
  }

  .result-heading-row {
    display: block;
  }

  .hero-badges {
    justify-items: start;
    margin-top: 1rem;
  }

  .result-heading-row h2 {
    font-size: clamp(2.9rem, 17vw, 4.2rem);
  }

  .metric-card small {
    white-space: normal;
  }

  .math-list > div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .math-list dd {
    text-align: left;
  }
}

@media (forced-colors: active) {
  h1 {
    background: none;
    color: CanvasText;
  }

  .panel,
  input,
  select,
  .input-with-unit,
  .speed-comparison,
  .cloud-result,
  .memory-bar,
  .fit-badge,
  .limit-badge {
    border: 1px solid ButtonText;
    box-shadow: none;
  }

  .weights-segment,
  .kv-segment,
  .speed-bar {
    background: Highlight;
  }

  .cloud-marker {
    background: ButtonText;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}