:root {
  --bg: #0f1115;
  --fg: #e8e8ea;
  --muted: #8a8f98;
  --accent: #7dd3a8;
  --max: 680px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  min-height: 100vh;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 80px 24px 40px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header { margin-bottom: 80px; }

.logo {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.logo::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 10px;
  vertical-align: middle;
}

.hero { margin-bottom: 64px; }

.hero h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero p {
  color: var(--muted);
  font-size: 18px;
  max-width: 560px;
}

.contact { margin-bottom: auto; padding-bottom: 64px; }

.contact h3 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 12px;
}

.contact p { margin-bottom: 4px; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}

a:hover { border-bottom-color: var(--accent); }

footer {
  border-top: 1px solid #1f2228;
  padding-top: 24px;
  font-size: 14px;
  color: var(--muted);
}

footer p { margin-bottom: 6px; }

.copy { font-size: 13px; }

article {
  padding-top: 40px;
}

article h1 {
  font-size: 28px;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

article h2 {
  font-size: 18px;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--fg);
}

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

article ul { padding-left: 20px; }

article .back {
  display: inline-block;
  margin-top: 40px;
  font-size: 14px;
}

@media (max-width: 520px) {
  main { padding: 48px 20px 32px; }
  header { margin-bottom: 48px; }
  .hero h2 { font-size: 26px; }
  .hero p { font-size: 16px; }
}