:root {
  --bg: #f3f7fc;
  --panel: #ffffff;
  --panel2: #e8f0fa;
  --line: #d0dcee;
  --ink: #0b1730;
  --mute: #566a8a;
  --ice: #0369a1;
  --good: #15803d;
  --bad: #b91c1c;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #050a14;
    --panel: #0c1424;
    --panel2: #111c31;
    --line: #1d2a44;
    --ink: #e9f2ff;
    --mute: #8497b9;
    --ice: #7dd3fc;
    --good: #4ade80;
    --bad: #f87171;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--ice); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.top {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.top-inner, main, footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}
.top-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}
.brand span { color: var(--ice); }
nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 15px; }
nav a { text-decoration: none; color: var(--mute); font-weight: 600; }
nav a[aria-current="page"] { color: var(--ice); }

main { padding-top: 32px; padding-bottom: 48px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 20px; line-height: 1.3; margin: 36px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 4px; }
p, li { color: var(--ink); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.meta { color: var(--mute); margin: 0 0 24px; font-size: 14px; }

.note {
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 20px 0;
}
.note p { margin: 0; }

.table-wrap { overflow-x: auto; margin: 12px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { color: var(--mute); font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; }

.cards { display: grid; gap: 12px; margin-top: 24px; }
.card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  color: var(--ink);
  text-decoration: none;
}
.card strong { display: block; font-size: 17px; }
.card span { color: var(--mute); font-size: 15px; }

form { display: grid; gap: 16px; margin-top: 20px; }
label { display: grid; gap: 6px; font-weight: 600; font-size: 15px; }
input, select, textarea {
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  width: 100%;
}
textarea { min-height: 150px; resize: vertical; }
.hint { color: var(--mute); font-weight: 400; font-size: 13px; }
button {
  font: inherit;
  font-weight: 700;
  border: 0;
  border-radius: 12px;
  padding: 13px 18px;
  background: var(--ice);
  color: var(--bg);
  cursor: pointer;
}
button[disabled] { opacity: 0.6; cursor: default; }
.status { margin: 0; font-weight: 600; }
.status.ok { color: var(--good); }
.status.err { color: var(--bad); }
.hp { position: absolute; left: -9999px; }

footer {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  padding-bottom: 32px;
  color: var(--mute);
  font-size: 14px;
}