:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #f1f3f6;
  --line: #e4e7ec;
  --text: #0f172a;
  --text-2: #334155;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --ok: #15803d;
  --ok-bg: #ecfdf3;
  --ok-line: #b7ebc8;
  --bad: #c62828;
  --bad-bg: #fef2f2;
  --bad-line: #f5c2c2;
  --warn: #a15c00;
  --warn-bg: #fff7e6;
  --warn-line: #f3d48b;
  --info: #475569;
  --info-bg: #eef2f6;
  --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 4px 16px rgba(15, 23, 42, .04);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1013;
    --surface: #16191e;
    --surface-2: #1d2128;
    --line: #2a2f38;
    --text: #e8eaed;
    --text-2: #c9ced6;
    --muted: #98a1af;
    --accent: #5b8def;
    --accent-ink: #0b1020;
    --ok: #4ade80;
    --ok-bg: #11251a;
    --ok-line: #1f4d31;
    --bad: #f87171;
    --bad-bg: #2a1414;
    --bad-line: #5c2323;
    --warn: #fbbf24;
    --warn-bg: #2a2111;
    --warn-line: #5a4519;
    --info: #b6bfcc;
    --info-bg: #1f242c;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
button { font: inherit; }
.wrap { max-width: 780px; margin: 0 auto; padding: 0 16px; }

/* шапка */
.bar { background: var(--surface); border-bottom: 1px solid var(--line); }
.bar-row { height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; color: var(--text); text-decoration: none; min-width: 0; }
.logo { width: 24px; height: 24px; border-radius: 7px; background: var(--accent); position: relative; flex: none; }
.logo::after { content: ""; position: absolute; left: 7px; top: 6px; width: 9px; height: 5px; border: solid var(--accent-ink); border-width: 0 0 2.5px 2.5px; transform: rotate(-45deg); }
.ghost { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 6px 10px; border-radius: 8px; font-size: 14px; white-space: nowrap; }
.ghost:hover { color: var(--text); background: var(--surface-2); }

/* вступление и поиск */
.intro { padding: 32px 0 4px; }
.intro h1 { margin: 0 0 8px; font-size: 26px; line-height: 1.25; letter-spacing: -.015em; }
.lead { margin: 0; color: var(--text-2); max-width: 680px; }
.search {
  margin-top: 20px; display: flex; gap: 6px; padding: 6px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow);
}
.search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.search input {
  flex: 1; min-width: 0; height: 46px; padding: 0 10px; border: 0; outline: 0;
  background: transparent; color: var(--text); font: 15px var(--mono);
}
.search input::placeholder { color: var(--muted); font-family: inherit; }
.search button, .login-box button {
  height: 46px; padding: 0 22px; border: 0; border-radius: 10px; cursor: pointer;
  background: var(--accent); color: var(--accent-ink); font-weight: 600; white-space: nowrap;
}
.search button:hover, .login-box button:hover { filter: brightness(1.06); }
.search button:disabled, .login-box button:disabled { opacity: .55; cursor: progress; }
.err { color: var(--bad); font-size: 14px; margin: 10px 4px 0; }

/* карточка итога */
#result { margin-top: 22px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-left-width: 5px; border-radius: 16px;
  padding: 20px 22px; box-shadow: var(--shadow);
  display: grid; grid-template-columns: 46px 1fr; gap: 0 16px; align-items: start;
}
.card > .icon {
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  font-size: 22px; font-weight: 700; background: var(--info-bg); color: var(--info);
}
.card > .body { min-width: 0; }
.card h2 { margin: 2px 0 2px; font-size: 22px; line-height: 1.25; letter-spacing: -.01em; }
.card .sub { font-weight: 600; color: var(--text-2); }
.card .why { margin-top: 8px; color: var(--text-2); }
.card.ok { border-left-color: var(--ok); } .card.ok .icon { background: var(--ok-bg); color: var(--ok); } .card.ok h2 { color: var(--ok); }
.card.warn { border-left-color: var(--warn); } .card.warn .icon { background: var(--warn-bg); color: var(--warn); } .card.warn h2 { color: var(--warn); }
.card.bad { border-left-color: var(--bad); } .card.bad .icon { background: var(--bad-bg); color: var(--bad); } .card.bad h2 { color: var(--bad); }
.card.unknown { border-left-color: var(--muted); }

.where { margin-top: 14px; padding: 12px 14px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--line); }
.card.warn .where { background: var(--warn-bg); border-color: var(--warn-line); }
.card.bad .where { background: var(--surface-2); }
.where .label { font-size: 12px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.card.warn .where .label { color: var(--warn); }
.where-row { display: grid; grid-template-columns: 86px 1fr; gap: 10px; padding: 2px 0; }
.where-row .op { font-weight: 650; }

.action {
  margin-top: 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 12px 14px; border-radius: 12px; border: 1px dashed var(--line);
}
.action p { margin: 0; flex: 1 1 320px; }
.action p b { margin-right: 4px; }
.copy {
  border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 10px;
  padding: 8px 14px; cursor: pointer; font-size: 14px; font-weight: 600; white-space: nowrap;
}
.copy:hover { background: var(--surface-2); }
.copy.done { color: var(--ok); border-color: var(--ok-line); }

.fams { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.fam { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; border: 1px solid var(--line); background: var(--surface-2); color: var(--info); }
.fam.pass { background: var(--ok-bg); border-color: var(--ok-line); color: var(--ok); }
.fam.fail { background: var(--bad-bg); border-color: var(--bad-line); color: var(--bad); }
.fam.part { background: var(--warn-bg); border-color: var(--warn-line); color: var(--warn); }
.fam .n { font-weight: 500; opacity: .85; }
.notes { margin: 12px 0 0; padding-left: 18px; color: var(--muted); font-size: 13.5px; }
.notes li + li { margin-top: 2px; }

.spin { width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid var(--line); border-top-color: var(--accent); animation: spin .8s linear infinite; display: inline-block; flex: none; }
.pill .spin { width: 12px; height: 12px; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* путь ссылки */
.section-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin: 26px 0 10px; }
.section-head h3 { margin: 0; font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.section-head span { font-size: 13px; color: var(--muted); }
.steps { list-style: none; margin: 0; padding: 0; }
.step { position: relative; padding-left: 40px; }
.step + .step { margin-top: 10px; }
.step::before { content: ""; position: absolute; left: 13px; top: 42px; bottom: -14px; width: 2px; background: var(--line); }
.step:last-child::before { display: none; }
.dot {
  position: absolute; left: 0; top: 15px; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
  background: var(--surface); border: 2px solid var(--line); color: var(--muted);
}
.step.s-ok .dot { border-color: var(--ok-line); color: var(--ok); }
.step.s-warn .dot { border-color: var(--warn-line); color: var(--warn); background: var(--warn-bg); }
.step.s-bad .dot { border-color: var(--bad-line); color: var(--bad); background: var(--bad-bg); }
.box { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.step.s-warn .box { border-color: var(--warn-line); }
.step.s-bad .box { border-color: var(--bad-line); }
.row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; padding: 12px 14px; cursor: pointer; border-radius: 12px; }
.row:hover { background: color-mix(in srgb, var(--surface-2) 55%, transparent); }
.main { min-width: 0; }
.head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.host { font-weight: 650; word-break: break-all; }
.kind { font-size: 12.5px; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.kind.k3 { color: var(--warn); }
.kind.k4, .kind.k5, .kind.kx { color: var(--bad); }
.url { font: 12.5px/1.45 var(--mono); color: var(--muted); word-break: break-all; margin-top: 3px; }
.sub2 { color: var(--muted); font-size: 13px; margin-top: 2px; }
.euerr { color: var(--bad); font-size: 13px; margin-top: 2px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 999px; font-size: 13px; font-weight: 600; border: 1px solid var(--line); background: var(--surface-2); color: var(--info); white-space: nowrap; }
.pill.ok { color: var(--ok); background: var(--ok-bg); border-color: var(--ok-line); }
.pill.bad { color: var(--bad); background: var(--bad-bg); border-color: var(--bad-line); }
.pill.warn { color: var(--warn); background: var(--warn-bg); border-color: var(--warn-line); }

.more { border-top: 1px solid var(--line); padding: 12px 14px 14px; display: grid; gap: 16px; }
.more h4 { margin: 0 0 8px; font-size: 12px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.ops { display: grid; gap: 8px; }
.op-row { display: grid; grid-template-columns: 86px 1fr; gap: 8px; align-items: start; }
.op-name { font-size: 13px; font-weight: 650; padding-top: 3px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 12.5px; padding: 3px 9px; border-radius: 8px; background: var(--surface-2); color: var(--info); border: 1px solid transparent; }
.chip.ok { color: var(--ok); }
.chip.bad { color: var(--bad); background: var(--bad-bg); border-color: var(--bad-line); }
.chip.warn { color: var(--warn); background: var(--warn-bg); border-color: var(--warn-line); }
.chip.none { color: var(--muted); }
.kv { display: grid; grid-template-columns: minmax(110px, max-content) 1fr; gap: 4px 14px; font-size: 13px; }
.kv .k { color: var(--muted); }
.kv .v { word-break: break-word; }
.kv.mono .v { font-family: var(--mono); font-size: 12.5px; word-break: break-all; }
details.hdrs summary { cursor: pointer; color: var(--muted); font-size: 13px; }
details.hdrs[open] summary { margin-bottom: 8px; }
.meta { color: var(--muted); font-size: 13px; margin: 14px 0 0; }

/* справка */
.help { margin: 26px 0 48px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
.help summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; display: flex; align-items: center; gap: 10px; }
.help summary::-webkit-details-marker { display: none; }
.help summary::before { content: "?"; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 13px; font-weight: 700; background: var(--info-bg); color: var(--info); flex: none; }
.help summary::after { content: "›"; margin-left: auto; color: var(--muted); font-size: 20px; line-height: 1; transition: transform .15s; }
.help[open] summary::after { transform: rotate(90deg); }
.help-body { padding: 0 18px 18px; color: var(--text-2); }
.help-body h4 { margin: 18px 0 6px; color: var(--text); font-size: 15px; }
.help-body h4:first-child { margin-top: 2px; }
.help-body p { margin: 0; }
.help-body ol, .help-body ul { margin: 0; padding-left: 20px; }
.help-body li + li { margin-top: 4px; }
.legend { list-style: none; padding-left: 0 !important; }
.legend li { position: relative; padding-left: 22px; }
.sw { position: absolute; left: 0; top: 6px; width: 12px; height: 12px; border-radius: 50%; }
.sw.ok { background: var(--ok); } .sw.warn { background: var(--warn); } .sw.bad { background: var(--bad); } .sw.none { background: var(--muted); }

/* вход */
.login-page { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login { width: 100%; max-width: 360px; }
.login .brand { margin-bottom: 18px; font-size: 17px; }
.login-box { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px 20px; display: grid; gap: 10px; box-shadow: var(--shadow); }
.login-box label { font-size: 13px; color: var(--muted); }
.login-box input { height: 46px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--text); font: 16px var(--mono); outline: 0; }
.login-box input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.login-box .err { margin: 0; }

@media (max-width: 640px) {
  .intro { padding-top: 22px; }
  .intro h1 { font-size: 21px; }
  .search { flex-direction: column; }
  .search input { flex: none; }
  .card { grid-template-columns: 1fr; padding: 16px; border-left-width: 1px; border-top-width: 5px; }
  .card > .icon { width: 38px; height: 38px; font-size: 18px; margin-bottom: 8px; }
  .card h2 { font-size: 19px; }
  .where-row, .op-row { grid-template-columns: 1fr; gap: 2px; }
  .where-row + .where-row { margin-top: 6px; }
  .row { grid-template-columns: 1fr; }
  .row .pill { justify-self: start; }
  .brand { font-size: 14px; }
}