:root {
  --brand: #1b6fb5;
  --brand-dark: #12507f;
  --ink: #1d2733;
  --muted: #5f6b78;
  --line: #e3e7ec;
  --bg: #f4f6f9;
  --card: #fff;
  --radius: 12px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e6ebf1; --muted: #9aa6b3; --line: #2b3440; --bg: #12171d; --card: #1a2129; --brand: #4c9be0; --brand-dark: #2f7fc6; }
  .brand img { background: #fff; border-radius: 8px; padding: 6px 10px; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 16px 48px; }
.brand { text-align: center; margin-bottom: 24px; }
.brand img { max-width: 100%; height: auto; }
.brand h1 { margin: 8px 0 0; font-size: 1.1rem; font-weight: 500; color: var(--muted); letter-spacing: .04em; text-transform: uppercase; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
h2 { margin: 0 0 8px; font-size: 1.2rem; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
a { color: var(--brand); }
label { display: block; font-weight: 600; margin-bottom: 6px; }
.key-row { display: flex; gap: 10px; flex-wrap: wrap; }
.key-row input {
  flex: 1 1 180px; font: inherit; font-size: 1.25rem; letter-spacing: .12em;
  padding: 10px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink);
}
.key-row input:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
button {
  font: inherit; font-weight: 600; padding: 10px 20px; border: 0; border-radius: 8px;
  background: var(--brand); color: #fff; cursor: pointer;
}
button:hover { background: var(--brand-dark); }
.ip { display: flex; gap: 12px; align-items: baseline; margin: 0 0 12px; }
.ip dt { font-weight: 600; }
.ip dd { margin: 0; font-family: ui-monospace, Consolas, monospace; font-size: 1.1rem; }
.ua { white-space: pre-wrap; word-break: break-word; background: var(--bg); border-radius: 8px; padding: 10px 12px; font-size: .8rem; margin: 0 0 16px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 560px) { .grid { grid-template-columns: repeat(2, 1fr); } }
.tile { text-align: center; border: 1px solid var(--line); border-radius: 8px; padding: 12px 6px; }
.tile h3 { margin: 0 0 8px; font-size: .9rem; color: var(--muted); font-weight: 600; }
.tile img { width: 48px; height: 48px; object-fit: contain; }
.tile p { margin: 6px 0 0; font-weight: 600; }
.tile .sub { margin: 0; font-weight: 400; color: var(--muted); font-size: .875rem; }
.nodata { color: var(--muted); font-weight: 400 !important; opacity: .6; }
footer { text-align: center; margin-top: 24px; }
.unattended { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); }
.unattended p { margin-bottom: 4px; }