:root {
  color-scheme: light dark;
  --background: #f8f7f4;
  --surface: #ffffff;
  --text: #22231f;
  --muted: #686961;
  --accent: #6e58cf;
  --border: #e2e0d9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #171718;
    --surface: #232324;
    --text: #f5f4ef;
    --muted: #b9b8b0;
    --accent: #b6a8ff;
    --border: #3b3b3c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 22px 80px;
}

header {
  margin-bottom: 42px;
}

.brand {
  color: var(--accent);
  font-weight: 750;
  letter-spacing: .02em;
  text-decoration: none;
}

h1, h2 { line-height: 1.2; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 6vw, 3rem); margin: 18px 0 12px; }
h2 { font-size: 1.35rem; margin: 34px 0 10px; }
p, ul { margin: 12px 0; }
ul { padding-left: 24px; }
a { color: var(--accent); }

.meta, footer { color: var(--muted); }
.meta { margin-top: 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px 24px;
  margin: 20px 0;
}

footer {
  border-top: 1px solid var(--border);
  margin-top: 44px;
  padding-top: 20px;
  font-size: .9rem;
}