:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --accent: #111;
  --muted: #666;
  --border: #e0e0e0;
}

* { box-sizing: border-box; }

body {
  font-family: 'Pretendard', 'Apple SD Gothic Neo', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  font-size: 18px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
}

h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.4rem;
  font-weight: 700;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.4rem;
  margin-top: 3rem;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 2rem;
}

p, li { margin: 0.6rem 0; }

a {
  color: #111;
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover { background: #ffec99; }

.meta {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.summary {
  font-size: 1.05rem;
  color: #333;
  border-left: 3px solid #111;
  padding: 0.6rem 1rem;
  background: #fafafa;
  margin: 1.5rem 0 2.5rem;
}

.case-box {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  background: #fafafa;
}

.case-box strong {
  font-size: 1.05rem;
}

.action-box {
  background: #111;
  color: #fff;
  padding: 1.75rem 1.75rem 1.5rem;
  border-radius: 8px;
  margin-top: 3.5rem;
}

.action-box h3 {
  color: #fff;
  margin: 0 0 1rem;
  font-size: 1.2rem;
}

.action-box ul { padding-left: 1.2rem; }
.action-box li { margin: 0.5rem 0; }
.action-box a { color: #ffec99; }

.source-box {
  background: #f7f7f7;
  border-left: 4px solid #111;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

.source-box ol { padding-left: 1.4rem; margin: 0; }
.source-box li { margin: 0.4rem 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
th, td {
  border: 1px solid var(--border);
  padding: 0.6rem 0.8rem;
  text-align: left;
}
th { background: #fafafa; font-weight: 700; }

code {
  background: #f3f3f3;
  padding: 0.1em 0.4em;
  border-radius: 3px;
  font-size: 0.92em;
}

@media (max-width: 600px) {
  body { font-size: 17px; padding: 2rem 1rem 4rem; }
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.2rem; }
}