* {
  box-sizing: border-box;
}

html {
  background: var(--gq-color-paper);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--gq-color-text);
  background: var(--gq-color-paper);
  font-family: var(--gq-font-ui);
  font-size: 1rem;
  line-height: 1.6;
}

.topbar {
  display: flex;
  min-height: var(--gq-layout-topbar-height);
  align-items: center;
  gap: var(--gq-space-4);
  padding: var(--gq-space-2) var(--gq-layout-gutter-standard);
  border-bottom: var(--gq-border-thin) solid var(--gq-color-separator);
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  flex: 0 0 auto;
  color: var(--gq-color-ink);
  font-size: var(--gq-text-sm);
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.location {
  min-width: 0;
  flex: 1 1 auto;
  color: var(--gq-color-text-muted);
  font-size: var(--gq-text-sm);
  overflow-wrap: anywhere;
}

.language-switcher {
  display: grid;
  min-width: 0;
  grid-template-columns: auto minmax(0, 24ch);
  align-items: center;
  gap: 0 var(--gq-space-3);
  margin-left: auto;
}

.language-links {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--gq-space-1);
}

.language-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: var(--gq-space-2);
  border-radius: var(--gq-radius-control);
  color: var(--gq-color-ink);
  text-underline-offset: 0.2em;
  overflow-wrap: anywhere;
}

.language-links a[aria-current="page"] {
  font-weight: 650;
}

.language-note {
  color: var(--gq-color-text-muted);
  font-size: var(--gq-text-xs);
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.task-canvas {
  width: min(100%, 52rem);
  min-width: 0;
  margin: 0 auto;
  padding: var(--gq-space-8) var(--gq-layout-gutter-standard) var(--gq-space-16);
}

.tool-section,
.usage-notes {
  min-width: 0;
}

h1,
h2,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0 0 var(--gq-space-3);
  font-size: clamp(1.75rem, 5vw, 2rem);
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h2 {
  margin: 0;
  font-size: var(--gq-text-lg);
  font-weight: 650;
  line-height: 1.3;
}

p {
  max-width: var(--gq-layout-reading-max);
  margin: 0;
}

.intro {
  margin-bottom: var(--gq-space-6);
}

.unsupported-note {
  margin: 0 0 var(--gq-space-6);
  padding: var(--gq-space-3) 0;
  border-block: var(--gq-border-thin) solid var(--gq-color-separator);
  color: var(--gq-color-text-muted);
}

.unsupported-note[hidden],
.field-error[hidden],
.precision-note[hidden],
.formula-text[hidden] {
  display: none;
}

.converter-controls {
  display: grid;
  min-width: 0;
  gap: var(--gq-space-6);
  margin: 0;
  padding: 0;
  border: 0;
}

.field {
  display: grid;
  min-width: 0;
  gap: var(--gq-space-2);
}

label {
  font-weight: 650;
}

input,
select,
.button {
  min-width: 0;
  min-height: 44px;
  border: var(--gq-border-thin) solid var(--gq-color-control-border);
  border-radius: var(--gq-radius-control);
  font: inherit;
}

input,
select {
  width: 100%;
  padding: var(--gq-space-2) var(--gq-space-3);
  color: var(--gq-color-text);
  background: var(--gq-color-surface);
}

select {
  overflow: hidden;
  text-overflow: ellipsis;
}

input:disabled,
select:disabled,
.button:disabled {
  color: var(--gq-color-text-muted);
  background: var(--gq-color-paper-subtle);
  cursor: not-allowed;
}

.field-help {
  color: var(--gq-color-text-muted);
  font-size: var(--gq-text-sm);
  line-height: 1.45;
}

.field-error {
  color: var(--gq-color-danger-text);
  font-size: var(--gq-text-sm);
  font-weight: 600;
}

.unit-row {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) minmax(9rem, auto) minmax(0, 1fr);
  align-items: end;
  gap: var(--gq-space-4);
}

.swap-group {
  display: grid;
  min-width: 0;
  gap: var(--gq-space-2);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--gq-space-2) var(--gq-space-4);
  color: var(--gq-color-ink);
  background: var(--gq-color-acid);
  cursor: pointer;
  font-weight: 650;
  line-height: 1.3;
  text-align: center;
  overflow-wrap: anywhere;
}

.button:hover:not(:disabled) {
  border-color: var(--gq-color-ink);
}

.button:active:not(:disabled) {
  background: var(--gq-color-paper-subtle);
}

.button-secondary {
  background: var(--gq-color-surface);
}

.button-secondary:active:not(:disabled) {
  background: var(--gq-color-paper-subtle);
}

.swap-group .button {
  width: 100%;
}

.result-section {
  min-width: 0;
  padding-top: var(--gq-space-4);
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
}

.result-heading-row {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: var(--gq-space-4);
  margin-bottom: var(--gq-space-3);
}

.result-heading-row .button {
  flex: 0 0 auto;
  min-width: 6rem;
}

.conversion-result {
  display: block;
  min-width: 0;
  color: var(--gq-color-ink);
  font-family: var(--gq-font-data);
  font-size: clamp(1.25rem, 5vw, 1.75rem);
  font-weight: 650;
  line-height: 1.4;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.precision-note,
.formula-text {
  margin-top: var(--gq-space-3);
  color: var(--gq-color-text-muted);
  font-size: var(--gq-text-sm);
}

.formula-text {
  padding-top: var(--gq-space-3);
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
  font-family: var(--gq-font-data);
  overflow-wrap: anywhere;
}

.usage-notes {
  display: grid;
  gap: var(--gq-space-3);
  margin-top: var(--gq-space-8);
  padding-top: var(--gq-space-4);
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
}

.usage-notes p {
  color: var(--gq-color-text-muted);
  font-size: var(--gq-text-sm);
}

.reference-section {
  display: grid;
  min-width: 0;
  gap: var(--gq-space-3);
  margin-top: var(--gq-space-8);
  padding-top: var(--gq-space-4);
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
}

.content-list {
  display: grid;
  min-width: 0;
  gap: var(--gq-space-3);
  margin: 0;
  padding-inline-start: var(--gq-space-6);
}

.content-list li,
.faq-list dt,
.faq-list dd {
  min-width: 0;
  overflow-wrap: anywhere;
}

.faq-list {
  display: grid;
  min-width: 0;
  gap: var(--gq-space-4);
  margin: 0;
}

.faq-list > div {
  min-width: 0;
}

.faq-list > div + div {
  padding-top: var(--gq-space-3);
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
}

.faq-list dt {
  font-weight: 650;
}

.faq-list dd {
  margin: var(--gq-space-1) 0 0;
  color: var(--gq-color-text-muted);
}

.site-footer {
  width: min(100%, 52rem);
  margin: 0 auto;
  padding: 0 var(--gq-layout-gutter-standard) var(--gq-space-8);
}

.site-footer-content {
  display: grid;
  gap: var(--gq-space-2);
  padding-top: var(--gq-space-4);
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gq-space-2) var(--gq-space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--gq-color-ink);
  text-underline-offset: 0.2em;
  overflow-wrap: anywhere;
}

.footer-note {
  color: var(--gq-color-text-muted);
  font-size: var(--gq-text-sm);
}

code {
  overflow-wrap: anywhere;
  word-break: break-word;
}

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

:focus-visible {
  outline: 2px solid var(--gq-color-ink);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--gq-color-acid);
}

@media (max-width: 47.999rem) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--gq-space-1);
    padding: var(--gq-space-3) var(--gq-layout-gutter-compact);
  }

  .language-switcher {
    grid-template-columns: minmax(0, 1fr);
    justify-items: start;
    margin-left: 0;
  }

  .task-canvas {
    padding-top: var(--gq-space-6);
    padding-right: var(--gq-layout-gutter-compact);
    padding-left: var(--gq-layout-gutter-compact);
  }

  .site-footer {
    padding-right: var(--gq-layout-gutter-compact);
    padding-left: var(--gq-layout-gutter-compact);
  }

  .unit-row {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--gq-space-4);
  }

  .swap-group {
    grid-row: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    transition-duration: 0.01ms;
  }
}