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

body {
  margin: 0;
  background: #ffffff;
  color: #1a1a1a;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.4;
}

main {
  max-width: 28rem;
  margin: 0 auto;
  padding: 1rem;
}

h1 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
}

h2 {
  margin: 1rem 0 0.25rem;
  font-size: 1.125rem;
}

.field {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 600;
}

input {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  border: 1px solid #5f5f5f;
  border-radius: 6px;
  background: #ffffff;
  color: inherit;
  font: inherit;
  font-size: 16px;
}

input[aria-invalid="true"] {
  border-color: #b00020;
}

.message {
  margin: 0;
  color: #b00020;
}

.message:not(:empty) {
  margin-top: 0.25rem;
}

button {
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem 1.25rem;
  border: 1px solid #1a1a1a;
  border-radius: 6px;
  background: #f1f1f1;
  color: inherit;
  font: inherit;
  font-size: 16px;
  cursor: pointer;
}

input:focus,
button:focus {
  outline: 3px solid #0b57d0;
  outline-offset: 2px;
}

.result {
  margin-top: 1.5rem;
  padding: 1rem;
  border: 1px solid #c4c4c4;
  border-radius: 6px;
}

.amounts {
  margin: 0;
}

.row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.25rem 0;
}

dt {
  font-weight: 600;
}

dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

ol {
  margin: 0;
  padding-left: 2.25rem;
  font-variant-numeric: tabular-nums;
}

li {
  padding: 0.125rem 0;
}

#result-note {
  margin: 0.75rem 0 0;
}

#result-note:empty {
  display: none;
}

[hidden] {
  display: none !important;
}