:root {
  --bg: #f6f7f8; --surface: #fff; --ink: #14202b; --muted: #5d6b78; --line: #dde2e7;
  --brand: #0f5c6e; --brand-ink: #fff; --on: #1b7a43; --on-bg: #e3f4ea; --off: #9a5b00; --off-bg: #fdf0d8;
  --danger: #b3261e; --bar: #0f5c6e; --focus: #0b7fa0;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e1418; --surface: #151d23; --ink: #e8eef2; --muted: #93a2ae; --line: #26333c; --brand: #5ec2d9; --brand-ink: #06232b;
    --on: #6fd49a; --on-bg: #12301f; --off: #f0b85a; --off-bg: #3a2a0c; --danger: #ff8a80; --bar: #5ec2d9; --focus: #7fd3e8; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 28px; padding-bottom: 64px; }
a { color: var(--brand); } a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
h1 { font-size: 1.75rem; line-height: 1.2; margin: 0 0 4px; letter-spacing: -0.01em; }
h2 { font-size: 1rem; margin: 0 0 12px; }
.lead, .muted, .hint { color: var(--muted); } .lead { margin: 4px 0 20px; } .hint { font-size: .875rem; margin: 0; }
.crumb { margin: 0 0 12px; font-size: .9rem; }
.top { background: var(--surface); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 24px; min-height: 56px; }
.bar nav { flex: 1; display: flex; gap: 16px; } .bar nav a { color: var(--ink); text-decoration: none; padding: 4px 2px; border-bottom: 2px solid transparent; }
.bar nav a[aria-current="page"] { border-color: var(--brand); font-weight: 600; }
.brand { font-weight: 700; text-decoration: none; color: var(--ink); letter-spacing: -.01em; } .brand span { color: var(--brand); } .brand.big { font-size: 1.25rem; margin: 0 0 18px; }
.inline { display: inline; margin: 0; }
button.link { background: none; border: 0; color: var(--muted); font: inherit; cursor: pointer; padding: 4px; text-decoration: underline; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin-bottom: 16px; }
.auth { max-width: 420px; margin: 8vh auto 0; }
.stack { display: grid; gap: 14px; } .narrow { max-width: 520px; }
label { display: grid; gap: 6px; font-weight: 600; font-size: .9rem; }
label.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
input[type=email], input[type=password], input[name=code] { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); min-height: 44px; }
input[name=code] { letter-spacing: .25em; font-size: 1.25rem; text-align: center; }
input[type=checkbox] { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--brand); }
.btn { font: inherit; font-weight: 600; min-height: 44px; padding: 10px 18px; border: 0; border-radius: 8px; background: var(--brand); color: var(--brand-ink); cursor: pointer; }
.btn:hover { filter: brightness(1.08); } .btn.danger { background: var(--danger); color: #fff; }
.alert { background: var(--off-bg); color: var(--off); border-radius: 8px; padding: 10px 12px; margin: 0 0 14px; }
.qr { display: grid; place-items: center; background: #fff; border-radius: 8px; padding: 8px; width: max-content; margin: 8px 0; } .qr svg { width: 200px; height: 200px; }
code.secret { font-size: 1rem; letter-spacing: .06em; word-break: break-all; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; min-width: 640px; } th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; } tr:last-child td { border-bottom: 0; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.badge { display: inline-block; font-size: .8rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; } .badge.on { color: var(--on); background: var(--on-bg); } .badge.off { color: var(--off); background: var(--off-bg); }
.head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; display: grid; gap: 2px; }
.tl { color: var(--muted); font-size: .85rem; } .tv { font-size: 1.75rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; } .grid3 .card { margin: 0; }
ol.toplist { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; } ol.toplist li { display: flex; justify-content: space-between; gap: 12px; font-size: .92rem; }
ol.toplist .k { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } ol.toplist .v { font-variant-numeric: tabular-nums; color: var(--muted); }
.chart { width: 100%; height: auto; display: block; } .chart .bar { fill: var(--bar); } .chart .grid { stroke: var(--line); stroke-width: 1; } .chart .tick { fill: var(--muted); font-size: 11px; }
@media (max-width: 560px) { .bar { gap: 12px; } h1 { font-size: 1.4rem; } }
.warn { background: var(--off-bg); color: var(--off); font-size: .9rem; padding: 8px 0; } .warn code { font-size: .85em; }
.copybox { display: block; width: 100%; font: .9rem ui-monospace, monospace; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); word-break: break-all; user-select: all; }
.notice { background: var(--on-bg); color: var(--on); border-radius: 8px; padding: 12px 14px; margin: 0 0 16px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; } .btn.sm { min-height: 36px; padding: 6px 12px; font-size: .9rem; } .btn.ghost { background: transparent; color: var(--brand); border: 1px solid var(--line); }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin: 0; } legend { font-weight: 600; font-size: .9rem; padding: 0 6px; }
input[type=text] { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); min-height: 44px; }
.auth h1 { margin-bottom: 18px; }