/* Restored from the visible BrainSNN homepage on 2026-10-13.
   Source: https://www.brainsnn.com/assets/index-Ca3LKzzl.css
   The homepage .bh-site palette and .bh-mark CSS are authoritative here.
   The site's separate legacy favicon is intentionally not used as this logo. */
:root {
  --bh-bg: #05070b;
  --bh-panel: #0b1018;
  --bh-line: rgba(255, 255, 255, .11);
  --bh-text: #f4f7fb;
  --bh-muted: #99a6b7;
  --bh-cyan: #68eaff;
  --bh-violet: #947cff;
  --brain-bg: var(--bh-bg);
  --brain-panel: var(--bh-panel);
  --brain-line: var(--bh-line);
  --brain-text: var(--bh-text);
  --brain-muted: var(--bh-muted);
  --brain-cyan: var(--bh-cyan);
  --brain-violet: var(--bh-violet);
  --brain-font: Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* Exact visible homepage mark: use <span class="original-brand-mark"
   aria-hidden="true">B</span> beside the BrainSNN wordmark.
   It is originally CSS + a letter, not an external image asset. */
.original-brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--bh-cyan), var(--bh-violet));
  color: #041016;
  font-family: var(--brain-font);
  font-size: 16px;
  font-weight: 950;
  line-height: normal;
  letter-spacing: normal;
  text-decoration: none;
  box-shadow: none;
}

.original-brand-name {
  color: var(--bh-text);
  font-family: var(--brain-font);
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.original-brand-subtitle {
  color: var(--bh-muted);
  font-family: var(--brain-font);
  font-size: .62rem;
  font-weight: 400;
  letter-spacing: normal;
}