:root { color-scheme: light dark; }
* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.5;
}

.wrap {
  max-width: 860px;
  padding: 48px 20px;
  margin: 0 auto;
}

h1 { font-size: 2.2rem; margin: 0 0 8px; }
.tag { margin: 0 0 24px; opacity: 0.8; }

.card {
  border: 1px solid rgba(127,127,127,0.35);
  border-radius: 14px;
  padding: 18px;
}

button {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(127,127,127,0.35);
  cursor: pointer;
}

.footer {
  margin-top: 28px;
  opacity: 0.75;
  font-size: 0.95rem;
}