/* btbz#shop 퍼블릭 영역 공통 스타일 (PUB-01~05) */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, "Pretendard", "Noto Sans KR", sans-serif; color: #1a202c; line-height: 1.6; }
a { color: inherit; text-decoration: none; }

.site-header { display: flex; justify-content: space-between; align-items: center;
  padding: 16px 32px; border-bottom: 1px solid #e2e8f0; }
.logo { font-size: 20px; font-weight: 800; }
.logo span { color: #3182ce; }
.site-header nav { display: flex; gap: 20px; align-items: center; }

.btn { padding: 8px 18px; border-radius: 8px; font-weight: 600; }
.btn.primary { background: #3182ce; color: #fff; }
.btn.ghost { border: 1px solid #cbd5e0; }
.btn.lg { padding: 14px 28px; font-size: 17px; }

.hero { text-align: center; padding: 96px 24px 64px; }
.hero h1 { font-size: 40px; line-height: 1.3; margin-bottom: 20px; }
.hero p { max-width: 620px; margin: 0 auto 32px; color: #4a5568; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px; max-width: 1080px; margin: 0 auto; padding: 32px 24px 96px; }
.feature { border: 1px solid #e2e8f0; border-radius: 12px; padding: 24px; }
.feature h3 { margin-bottom: 8px; }
.feature p { color: #4a5568; font-size: 14px; }

.doc-page { max-width: 760px; margin: 0 auto; padding: 48px 24px 96px; }
.doc-page h1 { margin-bottom: 24px; }
.doc-page h2 { margin: 32px 0 12px; }
.doc-page p, .doc-page li { color: #2d3748; }

.site-footer { border-top: 1px solid #e2e8f0; padding: 32px; text-align: center;
  display: flex; flex-direction: column; gap: 8px; color: #718096; font-size: 14px; }
.site-footer a { margin: 0 10px; }