:root {
  --bg: #f6f7f3;
  --surface: #ffffff;
  --text: #1c2220;
  --muted: #4b5a55;
  --line: #d6ddd9;
  --accent: #0d6b5f;
  --accent-soft: #e1f2ee;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: radial-gradient(circle at top right, #eef5ef, var(--bg) 50%);
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 1.2rem;
}

.site-header {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
}

.site-title {
  margin: 0;
  font-size: 1.6rem;
  line-height: 1.2;
}

.site-title a {
  color: var(--text);
}

.site-tagline {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav {
  margin-top: 0.8rem;
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.site-nav a {
  display: inline-block;
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}

.page-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.2rem;
}

.page-card h1 {
  margin-top: 0;
  line-height: 1.2;
}

.page-card h2 {
  margin-top: 1.5rem;
}

.page-card ol,
.page-card ul {
  padding-left: 1.1rem;
}

.page-card li {
  margin: 0.75rem 0;
}

.site-footer {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 700px) {
  .site-shell {
    padding: 0.8rem;
  }

  .site-header,
  .page-card {
    border-radius: 10px;
    padding: 0.95rem;
  }

  .site-title {
    font-size: 1.35rem;
  }
}