/* Kasa Defteri renkleri; dış kaynak yok, yazı tipi sistem yedeğiyle. */
:root {
  color-scheme: dark;
  --bg: #100E0B;
  --text: #EEEBE4;
  --muted: #9A948D;
  --gold: #E6BE72;
  --f: "Mona Sans", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--f);
  -webkit-font-smoothing: antialiased;
}
main { text-align: center; }
h1 {
  margin: 0;
  font-size: clamp(2.25rem, 9vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.rule {
  height: 4px;
  width: min(280px, 60vw);
  margin: 20px auto 18px;
  border-top: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
}
p {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  letter-spacing: 0.04em;
}