:root {
  color-scheme: light;
  --bg: #f6f7f8;
  --surface: #ffffff;
  --text: #111315;
  --muted: #505861;
  --line: #d9dee4;
  --accent: #1f5d99;
  --focus: 2px solid #1f5d99;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: var(--bg);
  color: var(--text);
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.landing {
  width: min(920px, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(1.2rem, 1.8vw, 2rem);
}

h1 {
  margin: 0;
  font-size: clamp(1.6rem, 2.2vw, 2rem);
  line-height: 1.2;
}

.subtitle {
  margin: 0.55rem 0 1.4rem;
  color: var(--muted);
}

.choice-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.choice-card {
  border: 1px solid var(--line);
  background: #fff;
  color: inherit;
  text-decoration: none;
  padding: 1.1rem;
  min-height: 180px;
  display: grid;
  align-content: start;
  gap: 0.55rem;
}

.choice-card h2 {
  margin: 0;
  font-size: 1.15rem;
}

.choice-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.choice-card:hover {
  border-color: #b7c4d2;
}

.choice-card:focus-visible {
  outline: var(--focus);
  outline-offset: 3px;
}

.hint {
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}