:root {
  --bg: #0f1419;
  --surface: #1a222c;
  --surface2: #243040;
  --text: #e8eef4;
  --muted: #9aabbc;
  --accent: #3d9cf0;
  --accent-soft: rgba(61, 156, 240, 0.14);
  --border: #2e3b4a;
  --ok: #3ecf8e;
  --ok-soft: rgba(62, 207, 142, 0.14);
  --radius: 12px;
  --max: 720px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 17px;
}
a { color: var(--accent); }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header {
  padding: 24px 0 12px;
  border-bottom: 1px solid var(--border);
}
.brand {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.brand a { color: inherit; text-decoration: none; }
.brand span { color: var(--text); font-weight: 700; letter-spacing: 0.04em; }
.hero { padding: 36px 0 24px; }
h1 {
  font-size: clamp(1.55rem, 4.2vw, 2.05rem);
  line-height: 1.2;
  margin: 0 0 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 0 18px;
  max-width: 40em;
}
.free-chip {
  display: inline-block;
  background: var(--ok-soft);
  color: var(--ok);
  border: 1px solid rgba(62, 207, 142, 0.35);
  border-radius: 999px;
  padding: 6px 12px;
  margin-bottom: 16px;
  font-size: 0.85rem;
  font-weight: 600;
}
.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 0.95rem;
  color: var(--muted);
}
.callout-accent {
  border-color: rgba(61, 156, 240, 0.45);
  background: var(--accent-soft);
}
.callout strong { color: var(--text); }
.toc {
  padding: 8px 20px 28px;
}
.toc-title {
  font-size: 0.95rem;
  margin: 0 0 10px;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.toc ol {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}
.toc li { margin: 4px 0; }
section { padding: 28px 0; border-top: 1px solid var(--border); }
h2 {
  font-size: 1.2rem;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
h3 { font-size: 1rem; margin: 0 0 8px; }
.section-lead {
  color: var(--muted);
  margin: 0 0 18px;
  font-size: 0.98rem;
}
section p { margin: 0 0 12px; color: var(--muted); }
section p strong { color: var(--text); }
section ul {
  margin: 0 0 8px;
  padding-left: 1.25rem;
  color: var(--muted);
}
section li { margin: 6px 0; }
code {
  font-size: 0.88em;
  background: var(--surface2);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--text);
}
.grid.services {
  display: grid;
  gap: 12px;
  margin: 16px 0;
}
@media (min-width: 640px) {
  .grid.services { grid-template-columns: 1fr; }
}
.card.service {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease;
}
.card.service:hover {
  border-color: var(--accent);
  text-decoration: none;
}
.card.service .tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 6px;
}
.card.service h3 { color: var(--text); }
.card.service p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}
.hint {
  font-size: 0.92rem;
  color: var(--muted);
  margin: 8px 0 0;
}
footer {
  margin-top: 12px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--muted);
}
footer p { margin: 0 0 8px; }
.foot-note { font-size: 0.82rem; }