:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172c35;
  background: #f4f5f0;
  line-height: 1.6;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }
.shell { width: min(1120px, 100%); margin: 0 auto; padding: 3rem 1.5rem 5rem; }
h1, h2, p { margin-top: 0; }
h1 { font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.2; letter-spacing: -.035em; margin-bottom: 1rem; }
h2 { font-size: 1.15rem; line-height: 1.4; }
.eyebrow { text-transform: uppercase; letter-spacing: .16em; font-size: .75rem; font-weight: 750; color: #46636c; margin-bottom: .7rem; }
.intro { color: #405b65; max-width: 65ch; }
.notice { border-left: 4px solid #417266; padding: 1rem 1.25rem; background: #e4ede5; border-radius: 0 .5rem .5rem 0; margin: 1.5rem 0; }
.sign-in { background: #fff; border: 1px solid #d1dbd8; border-radius: .75rem; padding: 1.25rem; }
.sign-in h2 { margin-bottom: .5rem; }
label { display: block; font-size: .9rem; font-weight: 650; margin-bottom: .35rem; }
.sign-in-controls { display: flex; gap: .65rem; max-width: 34rem; }
input { min-width: 0; flex: 1; border: 1px solid #70858a; border-radius: .35rem; padding: .65rem; font: inherit; }
button { font: inherit; font-weight: 650; color: #fff; background: #205a50; border: 1px solid #205a50; border-radius: .4rem; padding: .65rem 1rem; cursor: pointer; }
button:hover:enabled { background: #16453d; }
button:disabled { opacity: .55; cursor: default; }
:focus-visible { outline: 3px solid #b0550a; outline-offset: 3px; }
.hint { font-size: .85rem; color: #4d6269; margin: .75rem 0 0; }
.status-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 5rem; padding: 1rem 0; }
.status-bar p { margin: 0; }
#retry { flex-shrink: 0; background: #fff; color: #205a50; }
.challenge { margin-bottom: 1.5rem; }
.challenge h2 { margin-bottom: .5rem; }
.answers { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.25rem; align-items: stretch; }
article { background: #fff; padding: 1.5rem; border: 1px solid #d1dbd8; border-radius: .75rem; min-width: 0; }
article h2 { border-bottom: 1px solid #e3e9e6; padding-bottom: .75rem; }
.untrusted-text { white-space: pre-wrap; overflow-wrap: anywhere; }
.vote-controls { display: grid; grid-template-columns: 1fr auto 1fr; gap: .75rem; margin-top: 1.25rem; }
.vote-controls button { min-height: 3rem; }
kbd { border: 1px solid currentColor; border-radius: .2rem; padding: .05rem .35rem; margin-left: .4rem; font: inherit; font-size: .75rem; opacity: .8; }
@media (max-width: 640px) {
  .shell { padding: 1.75rem 1rem 3rem; }
  .answers { grid-template-columns: minmax(0, 1fr); }
  article { padding: 1.1rem; }
  .sign-in-controls { flex-direction: column; }
  .vote-controls { grid-template-columns: 1fr; }
}

.sign-in-link { display: inline-block; background: #205a50; color: #fff; padding: .65rem 1rem; border-radius: .4rem; text-decoration: none; font-weight: 650; }
#adult-check { flex: initial; min-width: 1.2rem; width: 1.2rem; height: 1.2rem; vertical-align: middle; }