:root {
    color-scheme: light dark;
    --bg: #ffffff;
    --fg: #1b1f24;
    --muted: #5b6470;
    --line: #e3e6ea;
    --card: #fafbfc;
    --accent: #2f6feb;
    --ok: #1a7f37;
    --warn: #9a6700;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0e1116;
        --fg: #e6edf3;
        --muted: #8b949e;
        --line: #222831;
        --card: #151a21;
        --accent: #4b8bff;
        --ok: #3fb950;
        --warn: #d29922;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font: 15px/1.55 "Segoe UI", system-ui, -apple-system, sans-serif;
}

header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 14px 28px;
    border-bottom: 1px solid var(--line);
}

.brand { font-weight: 600; font-size: 17px; text-decoration: none; color: var(--fg); }
header nav { display: flex; gap: 16px; flex: 1; }
header a { color: var(--muted); text-decoration: none; }
header a:hover, header a.active { color: var(--fg); }
.who { color: var(--muted); font-size: 13px; }

main { max-width: 900px; margin: 0 auto; padding: 28px; }
h1 { font-size: 26px; margin: 0 0 6px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.lead { color: var(--muted); margin: 0 0 22px; max-width: 62ch; }

.card {
    border: 1px solid var(--line);
    background: var(--card);
    border-radius: 8px;
    padding: 18px 20px;
    margin-bottom: 18px;
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 600; color: var(--muted); font-size: 12px; }
th, td { padding: 7px 10px 7px 0; border-bottom: 1px solid var(--line); }
tr:last-child td { border-bottom: none; }
code { font-family: Consolas, "SF Mono", monospace; font-size: 13px; }

.button {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 6px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 13px;
}

.note { color: var(--muted); font-size: 13px; margin: 12px 0 0; }
.ok { color: var(--ok); }
.warn { color: var(--warn); }

.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; }
.dot.on { background: var(--ok); }
.dot.off { border: 1px solid var(--muted); }

.meter { height: 8px; background: var(--line); border-radius: 4px; overflow: hidden; margin: 10px 0; }
.meter .fill { height: 100%; background: var(--accent); }

footer {
    max-width: 900px;
    margin: 0 auto;
    padding: 8px 28px 32px;
    color: var(--muted);
    font-size: 12px;
}

ol { margin: 0; padding-left: 20px; }
li { margin-bottom: 6px; }