:root {
  --bg: #ffffff; --fg: #1c1c1e; --muted: #6b6b70; --card: #f2f2f7; --accent: #2a8462; --line: #e1e1e6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --fg: #f2f2f7; --muted: #a1a1a8; --card: #1c1c1e; --accent: #3fa37e; --line: #2c2c2e; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.75; font-size: 16px;
}
main { max-width: 680px; margin: 0 auto; padding: 32px 16px 64px; }
nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; margin-bottom: 32px; }
nav a { color: var(--accent); text-decoration: none; }
nav a[aria-current="page"] { color: var(--fg); font-weight: 600; }
h1 { font-size: 28px; line-height: 1.35; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 36px 0 8px; }
p, li { color: var(--fg); }
.lead { color: var(--muted); margin-top: 0; }
.card { background: var(--card); border-radius: 14px; padding: 16px 18px; margin: 16px 0; }
.card p { margin: 4px 0; }
ul.check { list-style: none; padding: 0; }
ul.check li { padding-left: 1.6em; position: relative; margin: 6px 0; }
ul.check li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
dt { font-weight: 600; margin-top: 18px; }
dd { margin: 4px 0 0; color: var(--muted); }
footer { margin-top: 48px; color: var(--muted); font-size: 13px; }
.todo { background: #ffd60a33; border-radius: 6px; padding: 0 4px; }
td:first-child, th:first-child { width: 8em; }
.brand { display: flex; align-items: center; gap: 14px; margin-bottom: 8px; }
.brand img { width: 64px; height: 64px; border-radius: 15px; }
.languages { margin-top: 12px; line-height: 2; }
.languages a { color: var(--accent); text-decoration: none; }
.languages a[aria-current] { color: var(--fg); font-weight: 600; }