:root {
  --bg: #fbfcfe;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #2563eb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  line-height: 1.7;
}

a { color: inherit; }
a:hover { color: var(--brand); }

main {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
}

.home {
  padding: 5rem 0 4rem;
}

.hero.compact {
  margin-bottom: 3rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--brand);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2 {
  letter-spacing: -0.04em;
  line-height: 1.2;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.6rem, 8vw, 4.8rem);
}

h2 {
  margin: 0 0 1rem;
  font-size: 1.45rem;
}

p { margin: 0 0 1rem; }

.hero-copy {
  max-width: 560px;
  color: var(--muted);
  font-size: 1.05rem;
}

.pattern-list {
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.pattern-list ol {
  list-style-position: inside;
  margin: 0;
  padding: 0;
}

.pattern-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 1.08rem;
}

.pattern-list a {
  text-decoration: none;
  font-weight: 700;
}

.article-page {
  padding: 2rem 0 5rem;
}

.back-nav {
  margin-bottom: 3rem;
  color: var(--muted);
}

.back-nav a {
  text-decoration: none;
  font-weight: 700;
}

.article h1 {
  font-size: clamp(2.1rem, 6vw, 3.8rem);
}

.article-date {
  margin-top: -0.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.article section {
  margin-top: 2.2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.article ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.article li + li {
  margin-top: 0.45rem;
}

footer {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 640px) {
  .home { padding-top: 3rem; }
}