:root {
    --fg: #1d2330; --muted: #5b6475; --bg: #f6f7f9; --card: #fff; --line: #dde1e8;
    --accent: #00528c; --accent-fg: #fff; --warn-bg: #fff4e5; --warn: #8a4b00; --ok: #1d6b3a; --danger: #b42318;
    color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
    :root {
        --fg: #e6e9ef; --muted: #a4acbb; --bg: #12151b; --card: #1b1f27; --line: #2c3240;
        --accent: #6cb4ee; --accent-fg: #0b1220; --warn-bg: #3a2a12; --warn: #f5c27a; --ok: #7fd49c; --danger: #ff8a80;
    }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, sans-serif; color: var(--fg); background: var(--bg); }
.top { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; max-width: 960px; margin: 0 auto; }
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
main { max-width: 960px; margin: 0 auto; padding: 0 16px 32px; }
footer { max-width: 960px; margin: 0 auto; padding: 16px; color: var(--muted); font-size: 14px; }
section { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px 20px; margin: 16px 0; }
h1 { font-size: 1.6rem; } h2 { font-size: 1.2rem; margin-top: 0; }
a { color: var(--accent); }
label { display: block; font-weight: 600; margin: 12px 0 4px; }
input[type=text], input[type=email], input[type=number], textarea {
    width: 100%; max-width: 480px; padding: 8px 10px; font: inherit; color: inherit; background: var(--bg);
    border: 1px solid var(--line); border-radius: 6px;
}
textarea { max-width: 100%; min-height: 4rem; }
button { font: inherit; padding: 8px 16px; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-fg); cursor: pointer; margin-top: 12px; }
button.secondary { background: transparent; color: var(--accent); }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.link { background: none; border: none; color: var(--accent); padding: 0; margin: 0; text-decoration: underline; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.notice { background: var(--warn-bg); color: var(--warn); padding: 10px 14px; border-radius: 6px; }
.ok { color: var(--ok); } .error { color: var(--danger); } .muted { color: var(--muted); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
code, pre { font-family: ui-monospace, monospace; font-size: 14px; }
pre { background: var(--bg); padding: 10px; border-radius: 6px; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }
form.inline { display: inline; }
.copy-row { display: flex; gap: 8px; align-items: center; }
.copy-row pre { flex: 1; margin: 0; }
.copy-row button { margin-top: 0; flex: none; }