:root {
  --bg: #fafafa;
  --card: #fff;
  --text: #111;
  --muted: #555;
  --link: #0f766e;
  --border: #e5e5e5;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

header {
  border-bottom: 1px solid var(--border);
  background: #fff;
  padding: 14px 24px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.brand span { color: var(--link); }

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 18px;
  transition: color 0.15s;
}

nav a:hover { color: var(--text); }
nav a.active { color: var(--text); font-weight: 600; }

main {
  max-width: 760px;
  margin: 32px auto;
  padding: 0 24px 64px;
}

h1 {
  font-size: 28px;
  letter-spacing: -0.8px;
  margin: 0 0 8px;
}

.subtitle {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 32px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.card h2 {
  font-size: 16px;
  margin: 24px 0 8px;
  color: var(--text);
}

.card h2:first-child { margin-top: 0; }

.card p, .card li {
  font-size: 14px;
  color: var(--muted);
  margin: 4px 0;
}

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

.card ul { padding-left: 18px; margin: 6px 0; }

.updated {
  text-align: center;
  font-size: 12px;
  color: #999;
  margin-top: 24px;
}

footer {
  text-align: center;
  font-size: 12px;
  color: #999;
  padding: 24px;
  border-top: 1px solid var(--border);
  background: #fff;
}

footer a { color: var(--muted); text-decoration: none; margin: 0 8px; }
footer a:hover { color: var(--text); }

.hero {
  text-align: center;
  padding: 48px 24px 24px;
}

.hero h1 { font-size: 40px; letter-spacing: -1.2px; margin: 0 0 12px; }
.hero p { font-size: 16px; color: var(--muted); max-width: 480px; margin: 0 auto; }

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 24px;
}

.cta {
  background: var(--link);
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: opacity 0.15s;
}

.cta.secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
.cta:hover { opacity: 0.85; }

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 24px;
}

.contact-card a { color: var(--link); text-decoration: none; }
.contact-card a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .hero h1 { font-size: 30px; }
  nav a { margin-left: 12px; }
}