:root {
  --ink: #1f2328;
  --grey: #6b7280;
  --blue: #2c5f8a;
  --line: #d0d5dd;
  --red: #9b2c1f;
  --green: #2f7d4f;
  color-scheme: light;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.4;
}
/* One column: the phone layout, centered and kept readable on a laptop. */
.column {
  width: 100%;
  max-width: 36rem;
  margin: 0 auto;
  padding: 24px 20px 48px;
}
.small {
  margin: 0 0 8px;
  color: var(--grey);
  font-size: 15px;
  font-weight: 600;
}
h1 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.3;
  overflow-wrap: anywhere;
}
p {
  margin: 0 0 16px;
  color: var(--grey);
  overflow-wrap: anywhere;
}
label {
  display: block;
  margin: 24px 0 6px;
  font-weight: 600;
}
input {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--ink);
  border-radius: 10px;
  font: inherit;
  font-size: 28px;
  letter-spacing: 0.15em;
  text-align: center;
}
input.bad {
  border-color: var(--red);
}
.error {
  margin: 8px 0 16px;
  color: var(--red);
  font-size: 15px;
}
.go {
  width: 100%;
  min-height: 56px;
  margin-top: 12px;
  border: 0;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.options {
  display: grid;
  gap: 12px;
  margin: 24px 0 16px;
}
.option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 56px;
  padding: 10px 14px;
  border: 2px solid var(--ink);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}
.option::before {
  flex: none;
  width: 24px;
  height: 24px;
  border: 2px solid currentColor;
  border-radius: 50%;
  content: "";
}
.option[aria-pressed="true"] {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}
.option[aria-pressed="true"]::before {
  background: radial-gradient(#fff 0 40%, transparent 45%);
}
.option:disabled {
  border-color: var(--line);
  color: var(--grey);
  cursor: default;
}
.option[aria-pressed="true"]:disabled {
  border-color: #8aa5bd;
  background: #8aa5bd;
  color: #fff;
}
.note {
  font-size: 15px;
}
.back {
  min-height: 48px;
  margin: 0 0 16px;
  padding: 8px 16px;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.rows {
  display: grid;
  gap: 12px;
  margin: 24px 0 16px;
}
.row {
  display: block;
  width: 100%;
  padding: 14px;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  text-align: left;
  cursor: pointer;
}
.row strong {
  display: block;
  margin-top: 6px;
  color: var(--blue);
}
.option .tag {
  margin-left: auto;
  font-size: 15px;
  font-weight: 700;
}
.option.right:disabled {
  border-color: var(--green);
  color: var(--green);
}
.option.right[aria-pressed="true"]:disabled {
  background: var(--green);
  color: #fff;
}
.verdict {
  margin: 0 0 8px;
  color: var(--ink);
  font-weight: 700;
}
.position {
  margin: 0 0 8px;
  font-size: 16px;
}
.tag::before {
  content: "✓ ";
}