:root {
  --accent: #2563eb;
  --text: #1f2430;
  --muted: #6b7280;
  --bg: #ffffff;
  --card-bg: #f8f9fb;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
.site-header { border-bottom: 1px solid var(--border); padding: 18px 0; }
.site-header .wrap { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.3rem; font-weight: 700; color: var(--text); text-decoration: none; }
.site-header nav a { margin-left: 18px; color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.site-header nav a:hover, .site-header nav a.active { color: var(--accent); }
main.wrap { padding: 40px 20px 60px; min-height: 60vh; }
h1 { font-size: 1.9rem; margin-bottom: 0.3em; }
h2 { font-size: 1.35rem; margin-top: 1.8em; }
h3 { font-size: 1.1rem; margin-top: 1.4em; }
p { margin: 0.9em 0; }
.meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.5em; }
.hero { padding: 30px 0 10px; }
.hero p { color: var(--muted); font-size: 1.05rem; }
.post-list { list-style: none; padding: 0; margin: 30px 0; }
.post-list li {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 14px;
  background: var(--card-bg);
}
.post-list a { color: var(--text); text-decoration: none; font-size: 1.1rem; font-weight: 600; }
.post-list a:hover { color: var(--accent); }
.post-list .excerpt { color: var(--muted); font-size: 0.95rem; margin-top: 6px; }
.ad-slot {
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin: 28px 0;
}
.back-link { display: inline-block; margin-top: 30px; color: var(--accent); text-decoration: none; }
.site-footer { border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted); font-size: 0.85rem; text-align: center; }
.site-footer a { color: var(--muted); }
ul, ol { padding-left: 1.3em; }
li { margin: 0.4em 0; }
table { width: 100%; border-collapse: collapse; margin: 1.2em 0; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; font-size: 0.92rem; }
th { background: var(--card-bg); }