/* BR Vacuum - static site styles. No external fonts, no build step. */
:root {
  --bg: #f6f8fa;
  --surface: #ffffff;
  --ink: #1d2733;
  --ink-2: #4e5d6c;
  --ink-3: #7a8794;
  --line: #e2e8ef;
  --line-2: #cbd5e0;
  --blue: #185fa5;
  --blue-soft: #e6f1fb;
  --green: #0f6e56;
  --green-soft: #e1f5ee;
  --amber: #854f0b;
  --amber-soft: #faeeda;
  --red: #a32d2d;
  --red-soft: #fcebeb;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1060px; margin: 0 auto; padding: 0 20px; }

/* header ------------------------------------------------------------------ */
.site-head { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 10px; font-weight: 600; letter-spacing: .01em; font-size: 17px; }
.brand span { color: var(--ink-3); font-weight: 400; font-size: 13px; }
.brand-mark { width: 10px; height: 10px; border: 2px solid var(--blue); border-radius: 50%; display: inline-block; margin-right: 8px; }
.lang { display: flex; gap: 4px; }
.lang button {
  font: inherit; font-size: 13px; padding: 5px 12px; cursor: pointer;
  background: transparent; border: 1px solid var(--line-2); color: var(--ink-2);
  border-radius: 6px; line-height: 1.4;
}
.lang button[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }

/* hero -------------------------------------------------------------------- */
.hero { padding: 34px 0 8px; }
.hero h1 { font-size: 26px; line-height: 1.35; margin: 0 0 8px; font-weight: 600; letter-spacing: -.01em; }
.hero p { margin: 0; color: var(--ink-2); max-width: 780px; font-size: 14px; }
.hero .meta { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-size: 12px; padding: 3px 9px; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); color: var(--ink-2); }

/* sections ---------------------------------------------------------------- */
section { padding-top: 26px; }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.sec-head h2 { font-size: 18px; font-weight: 600; margin: 0; }
.sec-head .hint { font-size: 12px; color: var(--ink-3); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.card + .card { margin-top: 12px; }

/* form controls ----------------------------------------------------------- */
.control-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 5px; min-width: 150px; flex: 1 1 180px; }
.field label { font-size: 12px; color: var(--ink-2); font-weight: 500; }
select, input[type="text"], input[type="email"], textarea {
  font: inherit; font-size: 14px; width: 100%; padding: 8px 10px;
  border: 1px solid var(--line-2); border-radius: 6px; background: #fff; color: var(--ink);
}
select:focus, input:focus, textarea:focus { outline: 2px solid rgba(24,95,165,.25); outline-offset: 1px; border-color: var(--blue); }
textarea { resize: vertical; min-height: 78px; }
.btn {
  font: inherit; font-size: 13px; padding: 9px 16px; cursor: pointer; border-radius: 6px;
  border: 1px solid var(--line-2); background: #fff; color: var(--ink); line-height: 1.4;
}
.btn:hover { border-color: var(--blue); color: var(--blue); }
.btn-primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn-primary:hover { background: #134e8a; color: #fff; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

/* result ------------------------------------------------------------------ */
.result { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 16px; }
.result:empty { display: none; }
.verdict { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.badge { font-size: 12px; padding: 4px 10px; border-radius: 20px; font-weight: 500; }
.badge.ok { background: var(--green-soft); color: var(--green); }
.badge.warn { background: var(--amber-soft); color: var(--amber); }
.badge.no { background: var(--red-soft); color: var(--red); }
.badge.info { background: var(--blue-soft); color: var(--blue); }
.verdict strong { font-size: 16px; font-weight: 600; }
.kv { display: grid; grid-template-columns: 180px 1fr; gap: 6px 16px; font-size: 13px; margin: 0; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; color: var(--ink); }
.num { font-family: var(--mono); font-size: 13px; }
.note { font-size: 12px; color: var(--ink-3); margin-top: 10px; line-height: 1.6; }
.reason { font-size: 13px; color: var(--ink-2); margin: 0 0 12px; }
ul.kit { margin: 6px 0 0; padding-left: 20px; font-size: 13px; color: var(--ink-2); }
table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 8px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink-3); font-weight: 500; font-size: 12px; background: #fafbfc; }
tr:last-child td { border-bottom: 0; }
td.num { font-family: var(--mono); }
.scroll { overflow-x: auto; }

/* reference --------------------------------------------------------------- */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 12px; }
.grid-2 .card { margin: 0; }
.card h3 { font-size: 14px; font-weight: 600; margin: 0 0 8px; }
.card.compact { padding: 16px 18px; }

/* contact ----------------------------------------------------------------- */
.intents { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 10px; }
.intent {
  text-align: left; font: inherit; cursor: pointer; padding: 14px 16px; border-radius: var(--radius);
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink);
}
.intent:hover { border-color: var(--blue); }
.intent[aria-pressed="true"] { border-color: var(--blue); box-shadow: inset 0 0 0 1px var(--blue); background: var(--blue-soft); }
.intent .t { display: block; font-size: 14px; font-weight: 600; margin-bottom: 3px; }
.intent .s { display: block; font-size: 12px; color: var(--ink-3); line-height: 1.5; }
.contact-form { margin-top: 14px; }
.embed-code { font-family: var(--mono); font-size: 12px; background: #fafbfc; border: 1px solid var(--line); padding: 10px 12px; border-radius: 6px; word-break: break-all; color: var(--ink-2); margin-top: 10px; }

/* footer ------------------------------------------------------------------ */
footer { margin-top: 40px; padding: 22px 0 34px; border-top: 1px solid var(--line); color: var(--ink-3); font-size: 12px; }
footer .wrap { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.disclaimer { max-width: 760px; }

/* iframe embed mode ------------------------------------------------------- */
body.embed .site-head, body.embed footer, body.embed #contact, body.embed .hero .meta { display: none; }
body.embed .hero { padding-top: 8px; }
body.embed .hero h1 { font-size: 19px; }
body.embed .wrap { padding: 0 12px; }

@media (max-width: 720px) {
  .hero h1 { font-size: 21px; }
  .kv { grid-template-columns: 1fr; gap: 2px; }
  .kv dd { margin-bottom: 8px; }
  .field { flex-basis: 100%; }
  .card { padding: 15px 14px; }
}
@media print {
  .site-head .lang, .btn-row, #contact, footer { display: none; }
  body { background: #fff; }
  .card { break-inside: avoid; }
}