:root {
  --color-primary: #1a4d2e;
  --color-text: #222;
  --color-bg: #fff;
  --color-muted: #666;
  --max-width: 1100px;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  border-bottom: 1px solid #eee;
  padding: 16px 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-primary);
  text-decoration: none;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.95rem;
}

nav a:first-child { margin-left: 0; }
nav a:hover { color: var(--color-primary); }

.page-content {
  padding: 40px 20px;
  min-height: 60vh;
}

h1, h2, h3 { color: var(--color-primary); }

.post-list {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}

.post-card {
  border: 1px solid #eee;
  border-radius: 8px;
  padding: 20px;
}

.post-date {
  color: var(--color-muted);
  font-size: 0.85rem;
}

.site-footer {
  border-top: 1px solid #eee;
  padding: 20px 0;
  color: var(--color-muted);
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  nav a { margin-left: 0; margin-right: 14px; }
}