:root {
  --text: #172033;
  --muted: #667085;
  --line: #e6e8ee;
  --bg: #ffffff;
  --soft: #f7f8fb;
  --accent: #2563eb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.95);
}
.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo { font-weight: 800; letter-spacing: -.02em; }
.nav { display: flex; gap: 18px; font-size: 14px; color: var(--muted); align-items: center; }
.hero { padding: 56px 0 34px; border-bottom: 1px solid var(--line); }
.hero h1 { margin: 0 0 12px; font-size: clamp(30px, 5vw, 48px); line-height: 1.18; letter-spacing: -.04em; }
.hero p { max-width: 680px; margin: 0; color: var(--muted); font-size: 17px; }
.cta-row { margin-top: 24px; display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 10px;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.section { padding: 34px 0; }
.section-title { margin: 0 0 16px; font-size: 20px; letter-spacing: -.02em; }
.post-list { display: grid; gap: 14px; }
.card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}
.card h2 { margin: 0 0 8px; font-size: 21px; letter-spacing: -.02em; line-height: 1.35; }
.card p { margin: 0; color: var(--muted); }
.meta { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.post { max-width: 760px; padding: 48px 20px 64px; }
.post h1 { margin: 0 0 10px; font-size: clamp(30px, 5vw, 44px); line-height: 1.2; letter-spacing: -.04em; }
.post h2 { margin-top: 38px; font-size: 24px; letter-spacing: -.02em; }
.post p, .post li { color: #344054; }
.post .lead { font-size: 18px; color: var(--muted); }
.note { padding: 16px 18px; border-radius: 14px; background: var(--soft); border: 1px solid var(--line); }
.footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 13px; }
@media (max-width: 640px) {
  .nav { gap: 10px; font-size: 13px; }
  .header-inner { height: auto; padding: 16px 0; align-items: flex-start; flex-direction: column; }
}

/* 홈페이지와 블로그 연결 보완 */
.nav .cta-link {
  color: #fff;
  background: var(--accent);
  border-radius: 999px;
  padding: 8px 12px;
}
.related-posts {
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.related-posts ul {
  padding-left: 18px;
}
.related-posts li {
  margin: 8px 0;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--muted);
}
.footer-links a:hover {
  color: var(--accent);
}
@media (max-width: 640px) {
  .nav { flex-wrap: wrap; }
  .nav .cta-link { padding: 6px 10px; }
}