:root {
  --bg: #f4f6f9; --card: #ffffff; --text: #17212b; --muted: #5d6b7a; --line: #dfe5ec;
  --accent: #0e5a8a; --accent-2: #0b4870; --accent-soft: #e3eef6;
  --ok: #1d7a46; --ok-soft: #e2f4ea; --warn: #9a5b00; --warn-soft: #fff3df; --bad: #b42318; --bad-soft: #fde8e6;
  --radius: 12px; --shadow: 0 1px 2px rgba(16,24,40,.06), 0 4px 16px rgba(16,24,40,.06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f151b; --card: #17202a; --text: #e6edf3; --muted: #9aa8b6; --line: #2a3644;
    --accent: #4fa3e0; --accent-2: #7bbcec; --accent-soft: #15324a;
    --ok: #4cc38a; --ok-soft: #12301f; --warn: #f0b45b; --warn-soft: #34260f; --bad: #ff8a80; --bad-soft: #3a1714;
    --shadow: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
a { color: var(--accent); }
.top { display: flex; align-items: center; gap: 16px; padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; font-size: 18px; color: var(--text); text-decoration: none; }
.top nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; align-items: center; }
.top nav a, .top nav button { padding: 6px 10px; border-radius: 8px; text-decoration: none; color: var(--muted); font: inherit; font-size: 15px; background: none; border: 0; cursor: pointer; }
.top nav a.on, .top nav a:hover, .top nav button:hover { background: var(--accent-soft); color: var(--accent); }
main.narrow { max-width: 460px; margin: 40px auto; padding: 0 16px; }
main.wide { max-width: 1180px; margin: 24px auto; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; margin-bottom: 16px; }
h1 { font-size: 24px; margin: 0 0 6px; line-height: 1.25; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 16px; margin: 16px 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
label { display: block; font-weight: 550; font-size: 14px; margin: 14px 0 6px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=search], select, textarea {
  width: 100%; padding: 11px 12px; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 9px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 18px; border-radius: 9px; border: 1px solid transparent;
  background: var(--accent); color: #fff; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; min-height: 44px; }
.btn:hover { background: var(--accent-2); }
.btn.block { width: 100%; margin-top: 20px; }
.btn.secondary { background: var(--card); color: var(--text); border-color: var(--line); }
.btn.secondary:hover { background: var(--accent-soft); }
.btn.danger { background: var(--bad); }
.btn.small { padding: 6px 12px; min-height: 34px; font-size: 14px; }
.btn[disabled] { opacity: .6; cursor: progress; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.alert { padding: 12px 14px; border-radius: 9px; margin: 12px 0; font-size: 15px; }
.alert.bad { background: var(--bad-soft); color: var(--bad); }
.alert.ok { background: var(--ok-soft); color: var(--ok); }
.alert.warn { background: var(--warn-soft); color: var(--warn); }
.hero { text-align: center; }
.hero .btn { font-size: 18px; padding: 14px 28px; }
.dl { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); margin-top: 8px; }
.dl a { display: flex; gap: 12px; align-items: center; padding: 14px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: var(--text); background: var(--bg); }
.dl a:hover { border-color: var(--accent); }
.dl svg { flex: none; }
.dl b { display: block; }
.dl span { font-size: 13px; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 13px; white-space: nowrap; }
tr:hover td { background: var(--accent-soft); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; background: var(--accent-soft); color: var(--accent); }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.stat { font-size: 28px; font-weight: 700; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; margin-bottom: 12px; }
.toolbar > * { flex: 1 1 180px; }
.toolbar .btn { flex: 0 0 auto; }
details summary { cursor: pointer; font-weight: 600; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; word-break: break-all; }
.qr { background: #fff; padding: 12px; border-radius: 10px; display: inline-block; }
.steps { padding-left: 20px; } .steps li { margin: 6px 0; }
@media (max-width: 600px) {
  main.narrow { margin: 20px auto; }
  .card { padding: 18px; }
  .top { padding: 10px 14px; }
  th.hide-sm, td.hide-sm { display: none; }
}