:root {
  --bg: #f6f7fb; --fg: #1b1d24; --muted: #646a7a; --card: #fff; --line: #dfe2ea;
  --accent: #5b4bdb; --accent-fg: #fff; --error: #b3261e; --ok: #1e6b3a;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111318; --fg: #e8e9ee; --muted: #9aa0b0; --card: #1b1e26; --line: #2c3040; --accent: #8b7ff0; --accent-fg: #111318; --error: #ff8a80; --ok: #7fd49b; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.2rem; color: var(--fg); text-decoration: none; }
nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 14px; margin-left: auto; }
nav a { color: var(--fg); text-decoration: none; }
main { max-width: 860px; margin: 0 auto; padding: 16px; }
section { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 4px 16px 16px; margin: 16px 0; overflow-x: auto; }
h1 { font-size: 1.6rem; } h2 { font-size: 1.25rem; } h3 { font-size: 1.05rem; margin-top: 1.4em; }
a { color: var(--accent); }
label { display: block; margin: 10px 0; font-weight: 600; }
input, select, textarea { display: block; width: 100%; max-width: 420px; margin-top: 4px; padding: 10px; font: inherit; color: var(--fg); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; }
textarea { max-width: none; font-family: ui-monospace, monospace; font-size: 0.85rem; }
button, .button { display: inline-block; padding: 10px 18px; font: inherit; font-weight: 600; color: var(--accent-fg); background: var(--accent); border: 0; border-radius: 8px; cursor: pointer; text-decoration: none; }
.secondary button { background: transparent; color: var(--fg); border: 1px solid var(--line); }
form { margin: 8px 0; }
form.inline { display: inline-flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 0; }
form.inline select { display: inline-block; width: auto; margin: 0; padding: 6px; }
form.inline button, nav button { padding: 6px 12px; }
nav button { background: transparent; color: var(--fg); border: 1px solid var(--line); font-weight: 400; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: middle; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; } dt { color: var(--muted); } dd { margin: 0; }
code { font-family: ui-monospace, monospace; word-break: break-all; }
.key { font-size: 1.1rem; letter-spacing: 0.05em; }
.codes code { font-size: 0.9rem; }
.muted { color: var(--muted); }
.error { color: var(--error); font-weight: 600; }
.notice { color: var(--ok); font-weight: 600; }