.jsb-checkup,
.jsb-checkup * {
  box-sizing: border-box;
}

.jsb-checkup {
  color: var(--jsb-ink);
  font-family: var(--jsb-body);
  font-size: var(--jsb-text-body);
  line-height: 1.6;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
}

.jsb-checkup button,
.jsb-checkup input {
  font: inherit;
}

.jsb-checkup button {
  color: inherit;
}

.jsb-checkup button:focus-visible,
.jsb-checkup input:focus-visible,
.jsb-checkup a:focus-visible {
  outline: 3px solid var(--jsb-signal);
  outline-offset: 4px;
}

.jsb-label {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
  padding: var(--jsb-space-2xs) var(--jsb-space-sm);
  background: var(--jsb-ink);
  color: var(--jsb-paper-bright);
  font-family: var(--jsb-mono);
  font-size: var(--jsb-text-micro);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.jsb-label--acid {
  background: var(--jsb-acid);
  color: var(--jsb-ink);
}

.jsb-label--signal {
  background: var(--jsb-signal);
  color: var(--jsb-ink);
}

.jsb-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: var(--jsb-space-sm);
  border: 2px solid var(--jsb-ink);
  border-radius: var(--jsb-radius);
  padding: var(--jsb-space-sm) var(--jsb-space-lg);
  background: var(--jsb-acid);
  box-shadow: var(--jsb-shadow-small);
  cursor: pointer;
  font-family: var(--jsb-mono);
  font-size: var(--jsb-text-body);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: center;
  transition: transform 160ms var(--jsb-ease), box-shadow 160ms var(--jsb-ease), background-color 160ms var(--jsb-ease);
}

.jsb-button:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--jsb-ink);
}

.jsb-button:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--jsb-ink);
}

.jsb-button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.jsb-button--dark {
  background: var(--jsb-ink);
  color: var(--jsb-paper-bright);
}

.jsb-button--light {
  background: var(--jsb-paper-bright);
}

.jsb-button--quiet {
  min-height: 44px;
  border-color: transparent;
  padding-inline: 8px;
  background: transparent;
  box-shadow: none;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.jsb-button--quiet:hover,
.jsb-button--quiet:active {
  transform: none;
  box-shadow: none;
  color: var(--jsb-signal-dark);
}

.jsb-option {
  position: relative;
  display: block;
}

.jsb-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.jsb-option__label {
  display: flex;
  min-height: 64px;
  align-items: center;
  gap: var(--jsb-space-md);
  border: 2px solid var(--jsb-ink);
  border-radius: var(--jsb-radius);
  padding: var(--jsb-space-sm) var(--jsb-space-md);
  background: var(--jsb-paper-bright);
  box-shadow: 3px 3px 0 var(--jsb-line-strong);
  cursor: pointer;
  font-weight: 600;
  transition: background-color 140ms var(--jsb-ease), color 140ms var(--jsb-ease), transform 140ms var(--jsb-ease), box-shadow 140ms var(--jsb-ease);
}

.jsb-option__label::before {
  content: "";
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-radius: 50%;
  background: transparent;
}

.jsb-option input:checked + .jsb-option__label {
  background: var(--jsb-acid);
  box-shadow: var(--jsb-shadow-small);
  transform: translate(-2px, -2px);
}

.jsb-option input:checked + .jsb-option__label::before {
  box-shadow: inset 0 0 0 4px var(--jsb-acid);
  background: var(--jsb-ink);
}

.jsb-option input:focus-visible + .jsb-option__label {
  outline: 3px solid var(--jsb-signal);
  outline-offset: 4px;
}

.jsb-option__copy {
  display: grid;
  gap: var(--jsb-space-2xs);
}

.jsb-option__value {
  color: var(--jsb-moss);
  font-family: var(--jsb-mono);
  font-size: var(--jsb-text-micro);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.jsb-field {
  display: grid;
  gap: var(--jsb-space-xs);
}

.jsb-field label {
  font-family: var(--jsb-mono);
  font-size: var(--jsb-text-micro);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.jsb-field input[type="email"],
.jsb-field input[type="text"] {
  width: 100%;
  min-height: 52px;
  border: 2px solid var(--jsb-ink);
  border-radius: var(--jsb-radius);
  padding: var(--jsb-space-sm) var(--jsb-space-md);
  background: var(--jsb-paper-bright);
  color: var(--jsb-ink);
}

.jsb-checkup [aria-invalid="true"] {
  border-color: var(--jsb-signal-dark);
}

.jsb-error {
  border: 2px solid var(--jsb-signal-dark);
  padding: var(--jsb-space-sm) var(--jsb-space-md);
  background: #ffe3d8;
  color: var(--jsb-ink);
  font-size: var(--jsb-text-body);
}

.jsb-notice {
  border: 2px solid var(--jsb-ink);
  padding: var(--jsb-space-md);
  background: var(--jsb-paper-deep);
}

.jsb-notice--signal {
  border-color: var(--jsb-signal-dark);
  background: #ffe3d8;
}

.jsb-checkup a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.jsb-checkup a:hover {
  color: var(--jsb-signal-dark);
}

.jsb-visually-hidden:focus {
  position: fixed !important;
  z-index: 20;
  top: 12px;
  left: 12px;
  width: auto !important;
  height: auto !important;
  margin: 0 !important;
  padding: var(--jsb-space-sm) var(--jsb-space-md) !important;
  overflow: visible !important;
  clip: auto !important;
  background: var(--jsb-acid);
  color: var(--jsb-ink);
  box-shadow: var(--jsb-shadow-small);
  white-space: normal;
}

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