:root {
  --bg: #f4f7f9; --card: #ffffff; --ink: #14212b; --muted: #5d6d79; --line: #dbe3e9;
  --accent: #0b7fa6; --accent-ink: #ffffff; --ok: #1d8a4e; --warn: #b86a00; --bad: #c0352b;
  --ok-bg: #e5f5ec; --warn-bg: #fff3df; --bad-bg: #fde9e7; --band: rgba(29,138,78,.10);
  --radius: 14px; --shadow: 0 1px 2px rgba(20,33,43,.06), 0 4px 14px rgba(20,33,43,.05);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 16px; line-height: 1.45;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f171d; --card: #17232c; --ink: #e5edf2; --muted: #93a4b1; --line: #263642;
    --accent: #3bb3d9; --accent-ink: #06202b; --ok: #4cc386; --warn: #f0a540; --bad: #ff7a6e;
    --ok-bg: #133325; --warn-bg: #3a2a10; --bad-bg: #3d1a17; --band: rgba(76,195,134,.12);
    --shadow: none;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--ink); min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent); }
main { flex: 1; width: 100%; max-width: 1080px; margin: 0 auto; padding: 8px 16px 32px; }
h1 { font-size: 1.6rem; margin: 12px 0 4px; letter-spacing: -.01em; }
h2 { font-size: 1.15rem; margin: 28px 0 10px; }
.muted { color: var(--muted); }
.pad { padding: 24px 0; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  max-width: 1080px; width: 100%; margin: 0 auto; padding: 14px 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--ink); text-decoration: none; }
.brand svg { width: 30px; height: 30px; }
nav { display: flex; gap: 4px; flex-wrap: wrap; align-items: center; }
nav a, .link { padding: 7px 11px; border-radius: 9px; color: var(--muted); text-decoration: none; font: inherit; background: none; border: 0; cursor: pointer; }
nav a.on, nav a:hover, .link:hover { color: var(--ink); background: var(--card); }
.foot { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; padding: 20px 16px 28px; color: var(--muted); font-size: .88rem; }
.foot a { color: var(--muted); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr)); gap: 14px; }
.pool { display: flex; flex-direction: column; gap: 12px; color: inherit; text-decoration: none; transition: border-color .15s; }
.pool:hover { border-color: var(--accent); }
.pool .head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.pool .title { font-weight: 650; font-size: 1.08rem; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.metric { border-radius: 10px; padding: 10px; background: var(--bg); }
.metric .k { font-size: .78rem; color: var(--muted); }
.metric .v { font-size: 1.35rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.metric .v small { font-size: .8rem; font-weight: 500; color: var(--muted); }
.metric.ok { background: var(--ok-bg); } .metric.low, .metric.high { background: var(--warn-bg); }
.metric.low .v, .metric.high .v { color: var(--warn); }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; padding: 3px 9px; border-radius: 99px; white-space: nowrap; }
.badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.badge.ok { color: var(--ok); background: var(--ok-bg); } .badge.warn { color: var(--warn); background: var(--warn-bg); } .badge.bad { color: var(--bad); background: var(--bad-bg); }
.issues { margin: 0; padding: 0; list-style: none; font-size: .9rem; color: var(--warn); }
.issues li.bad { color: var(--bad); }
.sub { font-size: .85rem; color: var(--muted); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 16px; border-radius: 10px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-ink); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.danger { background: transparent; color: var(--bad); border-color: var(--bad); }
.btn[disabled] { opacity: .55; cursor: default; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
form.stack { display: grid; gap: 12px; max-width: 420px; }
label { display: grid; gap: 5px; font-size: .92rem; }
input, select { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; min-width: 0; }
input:focus-visible, select:focus-visible, .btn:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.err { color: var(--bad); font-size: .92rem; min-height: 1.2em; margin: 0; }
.okmsg { color: var(--ok); font-size: .92rem; margin: 0; }

.hero { display: grid; gap: 18px; padding: 48px 0 24px; max-width: 640px; }
.hero h1 { font-size: 2.1rem; line-height: 1.15; }
.hero p { font-size: 1.08rem; margin: 0; }
.points { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 12px; }
.points .card h2, .points .card h3 { margin: 0 0 6px; font-size: 1rem; }
.points .card p { margin: 0; color: var(--muted); font-size: .93rem; }

.charts { display: grid; gap: 14px; }
.chart h3 { margin: 0 0 6px; font-size: .95rem; display: flex; justify-content: space-between; gap: 8px; }
.chart svg { width: 100%; height: 150px; display: block; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; }
.chart .band { fill: var(--band); }
.chart .axis { fill: var(--muted); font-size: 10px; }
.tabs { display: inline-flex; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 3px; }
.tabs button { font: inherit; border: 0; background: none; padding: 6px 12px; border-radius: 8px; color: var(--muted); cursor: pointer; }
.tabs button.on { background: var(--accent); color: var(--accent-ink); }
table { width: 100%; border-collapse: collapse; font-size: .93rem; }
td, th { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
.limits { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.limits fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; display: grid; gap: 8px; margin: 0; }
.limits legend { padding: 0 4px; font-weight: 600; font-size: .92rem; }
.limits .pair { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
pre.report { white-space: pre-wrap; font: inherit; font-size: .93rem; background: var(--bg); border-radius: 10px; padding: 12px; margin: 0; }
.notice { border-left: 4px solid var(--warn); background: var(--warn-bg); padding: 12px 14px; border-radius: 8px; }
@media (max-width: 520px) {
  .metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .metric .v { font-size: 1.15rem; }
  .hero h1 { font-size: 1.7rem; }
  nav a, .link { padding: 6px 8px; }
}
.spread { justify-content: space-between; } .nowrap { white-space: nowrap; }
.mt0 { margin-top: 0; } .mt10 { margin-top: 10px; } .mt12 { margin-top: 12px; } .mt24 { margin-top: 24px; } .mb12 { margin-bottom: 12px; } .m0 { margin: 0; }
.w420 { max-width: 420px; width: 100%; } .w560 { max-width: 560px; } .w640 { max-width: 640px; } form.stack.wfull { max-width: none; }
.limits fieldset, .limits label { align-content: start; }
.limits { align-items: start; }
.axisrow { display: flex; justify-content: space-between; font-size: .75rem; color: var(--muted); margin-top: 4px; }
.top nav .btn:hover, .top nav .btn.on { background: var(--accent); color: var(--accent-ink); filter: brightness(1.08); }
.metric .goal { font-size: .78rem; color: var(--muted); margin-top: 2px; font-variant-numeric: tabular-nums; }