:root {
  --bg-top: #0a1f44;
  --bg-bottom: #081833;
  --card: rgba(255, 255, 255, 0.08);
  --text: #f8f9fa;
  --muted: #c9d1e6;
  --line: rgba(255, 255, 255, 0.18);
  --accent: #7fc4ff;
  --accent-soft: rgba(127, 196, 255, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  color: var(--text);
  line-height: 1.65;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 14px;
}

h1,
h2,
h3 {
  margin: 0 0 10px;
  color: var(--text);
  line-height: 1.3;
}

p,
li {
  color: var(--muted);
  margin: 0 0 12px;
}

ul {
  margin: 0 0 14px;
  padding-left: 20px;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: #9fd2ff;
}

.back {
  display: inline-block;
  margin-bottom: 14px;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  background: rgba(255, 255, 255, 0.05);
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(127, 196, 255, 0.35);
  border-radius: 999px;
  padding: 5px 10px;
  margin-bottom: 12px;
}

.meta {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 0;
}

.contact-card {
  margin: 0;
  font-style: normal;
  color: var(--muted);
  line-height: 1.75;
}

.contact-card strong {
  color: var(--text);
}

.contact-card a {
  overflow-wrap: anywhere;
}

.toc {
  columns: 2;
  column-gap: 24px;
  margin: 0;
  padding-left: 18px;
}

.toc li {
  break-inside: avoid;
  margin-bottom: 8px;
}

@media (max-width: 740px) {
  .toc {
    columns: 1;
  }
}