:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f5f7;
  color: #151515;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.screen {
  width: 100%;
  max-width: 480px;
  padding: 28px 20px;
}

h1 {
  margin: 0 0 24px;
  font-size: 28px;
  line-height: 1.1;
}

button {
  width: 100%;
  border: 0;
  border-radius: 16px;
  padding: 16px 18px;
  background: #111;
  color: white;
  font-size: 18px;
  font-weight: 700;
}

.card {
  margin-top: 20px;
  padding: 18px;
  border-radius: 20px;
  background: white;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.distance {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.message {
  color: #666;
}

.warning {
  color: #9a6700;
  background: #fff4ce;
  border-radius: 12px;
  padding: 12px;
}