:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1c2430;
  --muted: #5c6b7a;
  --line: #d5dee6;
  --accent: #0f6e56;
  --warn-bg: #fff6e8;
  --warn-line: #e2c48a;
  --warn-text: #6a4b12;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171d;
    --card: #1b232c;
    --text: #e7eef4;
    --muted: #a8b6c2;
    --line: #2d3946;
    --accent: #7ddec4;
    --warn-bg: #3a2e18;
    --warn-line: #8a6a32;
    --warn-text: #f3e0b8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 1.02rem;
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
  overflow-wrap: anywhere;
}

header.page {
  margin-bottom: 1.25rem;
}

h1 {
  font-size: 1.7rem;
  line-height: 1.2;
  margin: 0.4rem 0 0.5rem;
}

h2 {
  font-size: 1.15rem;
  margin: 1.6rem 0 0.45rem;
}

p, li { margin: 0.45rem 0; }

ul, ol { padding-left: 1.2rem; }

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

.meta, .langs, footer {
  color: var(--muted);
  font-size: 0.92rem;
}

.langs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  margin: 0 0 0.8rem;
}

.langs a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.15rem 0.1rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.langs a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--accent);
  font-weight: 650;
}

.notice {
  background: var(--warn-bg);
  color: var(--warn-text);
  border: 1px solid var(--warn-line);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin: 1rem 0;
}

article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.4rem 1rem 1.2rem;
}

footer {
  margin-top: 1rem;
}