:root {
  --bg: #f6f6fa;
  --fg: #1d1d28;
  --muted: #5d5d6e;
  --card: #ffffff;
  --accent: #5b4bd6;
  --border: #e1e1ec;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15151d;
    --fg: #ececf4;
    --muted: #a6a6b8;
    --card: #1e1e29;
    --accent: #a195ff;
    --border: #2e2e3d;
  }
}

:root[data-theme="dark"] {
  --bg: #15151d;
  --fg: #ececf4;
  --muted: #a6a6b8;
  --card: #1e1e29;
  --accent: #a195ff;
  --border: #2e2e3d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  overflow-wrap: anywhere;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.2rem;
  margin: 32px 0 8px;
}

p,
li {
  margin: 8px 0;
}

ul {
  padding-left: 22px;
}

a {
  color: var(--accent);
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 24px;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.links a {
  font-weight: 600;
}

footer {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 24px;
  text-align: center;
}

@media (max-width: 600px) {
  .wrap {
    padding: 24px 16px;
  }

  .card {
    padding: 20px;
  }

  h1 {
    font-size: 1.6rem;
  }
}