:root {
  --bg: #f5f5f7; --card: #ffffff; --text: #1d1d1f; --muted: #6e6e73; --border: #d2d2d7;
  --accent: #0071e3; --accent-text: #ffffff; --danger: #d70015; --ok: #1a7f37; --warn: #b25000;
  --radius: 12px; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --card: #1c1c1e; --text: #f5f5f7; --muted: #a1a1a6; --border: #38383a; --accent: #2997ff; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 14px 24px; background: var(--card); border-bottom: 1px solid var(--border); }
.brand { font-weight: 600; font-size: 17px; color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.logo { width: 22px; height: 22px; border-radius: 6px; background: linear-gradient(135deg, #5ac8fa, #007aff); display: inline-block; }
nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; }
nav a:hover, nav a.active { color: var(--text); background: var(--bg); }
main { max-width: 880px; margin: 24px auto; padding: 0 16px; }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px 40px; }
h1 { font-size: 26px; margin: 8px 0 16px; }
h2 { font-size: 19px; margin: 0 0 12px; }
h3 { font-size: 16px; margin: 18px 0 8px; }
p { margin: 8px 0; }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }
.narrow { max-width: 440px; margin-left: auto; margin-right: auto; }
label { display: block; font-weight: 500; margin: 12px 0 4px; }
.hint { display: block; color: var(--muted); font-size: 13px; font-weight: 400; margin-top: 2px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=url], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--text); font: inherit;
}
textarea { min-height: 76px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
.check { display: flex; align-items: flex-start; gap: 8px; font-weight: 400; margin: 8px 0; }
.check input { margin-top: 4px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 640px) { .row { grid-template-columns: 1fr; } }
button, .button { display: inline-block; padding: 9px 16px; border: 0; border-radius: 8px; background: var(--accent); color: var(--accent-text); font: inherit; font-weight: 500; cursor: pointer; text-decoration: none; }
button.secondary, .button.secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--danger); color: #fff; }
button.link { background: none; color: var(--muted); padding: 6px 10px; }
button.small { padding: 5px 10px; font-size: 13px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 16px; }
form.inline { display: inline; }
.flash { padding: 12px 14px; border-radius: 10px; margin-bottom: 16px; border: 1px solid var(--border); background: var(--card); }
.flash.ok { border-color: var(--ok); color: var(--ok); }
.flash.error { border-color: var(--danger); color: var(--danger); }
.copy { display: flex; gap: 8px; align-items: center; }
.copy code { flex: 1; overflow-x: auto; white-space: nowrap; }
code, .mono { font-family: var(--mono); font-size: 13px; background: var(--bg); border: 1px solid var(--border); padding: 6px 8px; border-radius: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
.table-wrap { overflow-x: auto; }
.badge { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.bad { color: var(--danger); border-color: var(--danger); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
ol.steps { padding-left: 20px; }
ol.steps li { margin: 6px 0; }
.status-list { list-style: none; padding: 0; margin: 8px 0; }
.status-list li { padding: 4px 0; }
details summary { cursor: pointer; color: var(--muted); }