:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #1b1f24;
  --muted: #5b6470;
  --line: #d9dde3;
  --accent: #1f5fbf;
  --accent-ink: #ffffff;
  --danger: #a4262c;
  --danger-bg: #fdecec;
  --ok-bg: #e9f5ec;
  --ok-ink: #1d5d2f;
  --warn-bg: #fff6dd;
  --warn-ink: #6b4a00;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 12px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 600; font-size: 16px; }
.host { font-weight: 400; color: var(--muted); margin-left: 6px; font-size: 14px; }
.who { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; }

main { max-width: 1040px; margin: 0 auto; padding: 20px 16px 8px; }

h1 { font-size: 22px; margin: 0 0 12px; }
h1:focus { outline: none; }
h2 { font-size: 16px; margin: 0 0 10px; }
.page-title { margin: 4px 0 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 0 0 16px;
}

.narrow { max-width: 460px; margin-left: auto; margin-right: auto; }
.narrow-left { max-width: 560px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 16px; }
.grid .card { margin: 0 0 16px; }

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

label { display: block; margin: 12px 0 4px; font-weight: 600; font-size: 14px; }

input[type="email"], input[type="password"], input[type="text"] {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid #7a8390;
  border-radius: 6px;
  font: inherit;
  font-size: 16px;
  background: #fff;
  color: var(--ink);
}

input:focus-visible, button:focus-visible, summary:focus-visible, .table-wrap:focus-visible, h2:focus-visible {
  outline: 3px solid #1f5fbf;
  outline-offset: 2px;
}

button {
  font: inherit;
  cursor: pointer;
  border-radius: 6px;
  border: 1px solid transparent;
  padding: 8px 14px;
}

button.primary { background: var(--accent); color: var(--accent-ink); margin-top: 16px; font-weight: 600; }
button.primary:hover { background: #184e9e; }
button.quiet { background: transparent; color: var(--accent); border-color: #7a8390; padding: 5px 10px; font-size: 14px; }
button.quiet:hover { background: #eef3fb; }
button[disabled] { opacity: 0.55; cursor: default; }

form button.quiet { margin-left: 8px; }

.hint { color: var(--muted); font-size: 13.5px; margin: 10px 0 0; }

.error {
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 6px;
  padding: 8px 10px;
  margin: 12px 0 0;
  font-size: 14px;
}

.notice {
  background: var(--ok-bg);
  color: var(--ok-ink);
  border-radius: 6px;
  padding: 10px 12px;
  margin: 0 0 16px;
}

.steps { padding-left: 20px; margin: 8px 0 12px; }
.steps li { margin: 3px 0; }

.qr { text-align: center; margin: 8px 0; }
.qr canvas { max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 6px; image-rendering: pixelated; }

.key { font: 14px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: 0.5px; word-break: break-all; }

dl { margin: 0; }
dl.plain dt { font-weight: 600; font-size: 14px; margin-top: 8px; }
dl.plain dd { margin: 2px 0 0; }

dl.facts { display: grid; grid-template-columns: minmax(120px, 38%) 1fr; gap: 6px 12px; }
dl.facts dt { color: var(--muted); font-size: 14px; }
dl.facts dd { margin: 0; word-break: break-word; }
dl.facts dd.span { grid-column: 1 / -1; }

.headline { font-size: 17px; font-weight: 600; margin: 0 0 10px; }

.warnings { list-style: none; margin: 0 0 12px; padding: 8px 10px; background: var(--warn-bg); color: var(--warn-ink); border-radius: 6px; font-size: 14px; }
.warnings li + li { margin-top: 4px; }

details { margin-top: 12px; }
summary { cursor: pointer; color: var(--accent); font-size: 14px; }
pre {
  background: #f1f3f6;
  border-radius: 6px;
  padding: 10px;
  overflow-x: auto;
  font: 12.5px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  margin: 8px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
}

code { font: 13px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: #f1f3f6; padding: 1px 4px; border-radius: 4px; }
code.key { background: transparent; padding: 0; }

.table-wrap { overflow-x: auto; margin-top: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
td.empty { color: var(--muted); text-align: center; padding: 18px 10px; }
td:last-child { white-space: nowrap; }
td code { white-space: nowrap; }

.pager { display: flex; gap: 8px; margin-top: 12px; }

footer { max-width: 1040px; margin: 0 auto; padding: 4px 16px 28px; color: var(--muted); font-size: 13px; }

[hidden] { display: none !important; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (pointer: coarse) {
  button.quiet { padding: 9px 12px; }
}

@media (max-width: 520px) {
  dl.facts { grid-template-columns: 1fr; gap: 2px; }
  dl.facts dd { margin-bottom: 8px; }
}