/* infohubway — 흰 배경, 단순한 정보성 블로그 스타일 */
:root {
  --bg: #ffffff;
  --text: #191f28;
  --sub: #4e5968;
  --muted: #8b95a1;
  --line: #e5e8eb;
  --soft: #f4f6f8;
  --accent: #1b64da;
  --accent-soft: #eef4ff;
  --mark: #fff4c2;
  --font: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --wide: 1080px;
  --read: 720px;
  --radius: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.container { max-width: var(--wide); margin: 0 auto; padding: 0 20px; }
.container.read { max-width: var(--read); }

/* ---------- 헤더 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(8px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.logo { font-size: 20px; font-weight: 800; letter-spacing: -0.02em; }
.logo span { color: var(--accent); }
.nav { display: flex; gap: 4px; }
.nav a { padding: 8px 12px; border-radius: 8px; font-size: 15px; font-weight: 500; color: var(--sub); }
.nav a:hover, .nav a.active { background: var(--soft); color: var(--text); }
.menu-btn { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-btn span { display: block; width: 20px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; }

@media (max-width: 760px) {
  .menu-btn { display: block; }
  .nav {
    display: none; position: absolute; top: 60px; left: 0; right: 0;
    flex-direction: column; background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px; }
}

/* ---------- 메인 ---------- */
.intro { padding: 48px 0 28px; }
.intro h1 { font-size: 30px; line-height: 1.35; margin: 0 0 8px; letter-spacing: -0.02em; }
.intro p { margin: 0; color: var(--sub); font-size: 17px; }

.cat-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 28px; }
.cat-tabs a {
  padding: 7px 14px; border: 1px solid var(--line); border-radius: 999px;
  font-size: 14px; color: var(--sub); background: #fff;
}
.cat-tabs a.active, .cat-tabs a:hover { border-color: var(--text); color: var(--text); }

.section-title { font-size: 20px; font-weight: 700; margin: 0 0 16px; }

.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px 24px; }
@media (max-width: 900px) { .post-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .post-grid { grid-template-columns: 1fr; } }

.card { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.thumb {
  aspect-ratio: 16 / 10; width: 100%; border-radius: var(--radius);
  background: var(--soft); overflow: hidden;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.card:hover .thumb img { transform: scale(1.03); }
.badge { font-size: 13px; font-weight: 600; color: var(--accent); }
.card h3 { font-size: 18px; line-height: 1.45; margin: 0; letter-spacing: -0.01em; }
.card p {
  margin: 0; font-size: 15px; color: var(--sub);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.meta { font-size: 13px; color: var(--muted); }

.pager { display: flex; justify-content: center; gap: 6px; margin: 48px 0 0; }
.pager a { min-width: 38px; height: 38px; display: grid; place-items: center; border-radius: 8px; font-size: 15px; color: var(--sub); }
.pager a.active { background: var(--text); color: #fff; }

/* ---------- 글 페이지 ---------- */
.breadcrumb { font-size: 13px; color: var(--muted); padding-top: 32px; }
.breadcrumb a:hover { color: var(--accent); }
.post-head { padding: 12px 0 24px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.post-head h1 { font-size: 30px; line-height: 1.4; margin: 8px 0 12px; letter-spacing: -0.02em; }
.post-head .meta { display: flex; flex-wrap: wrap; gap: 4px 12px; }
@media (max-width: 560px) { .post-head h1, .intro h1 { font-size: 25px; } }

.post-hero { margin: 0 0 28px; }
.post-hero img { border-radius: var(--radius); width: 100%; }

.toc {
  background: var(--soft); border-radius: var(--radius);
  padding: 18px 20px; margin: 0 0 32px;
}
.toc strong { display: block; font-size: 15px; margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 20px; font-size: 15px; color: var(--sub); }
.toc li { margin: 4px 0; }
.toc a:hover { color: var(--accent); }

.content { font-size: 17px; line-height: 1.9; }
.content p { margin: 0 0 20px; }
.content h2 {
  font-size: 23px; line-height: 1.45; margin: 48px 0 16px; letter-spacing: -0.015em;
  scroll-margin-top: 80px;
}
.content h3 { font-size: 19px; margin: 32px 0 12px; scroll-margin-top: 80px; }
.content ul, .content ol { padding-left: 22px; margin: 0 0 20px; }
.content li { margin: 6px 0; }
.content strong { font-weight: 700; }
.content mark { background: var(--mark); padding: 0 3px; border-radius: 3px; }
.content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.content figure { margin: 28px 0; }
.content figure img { border-radius: var(--radius); width: 100%; }
.content figcaption { font-size: 14px; color: var(--muted); text-align: center; margin-top: 8px; }
.content blockquote {
  margin: 24px 0; padding: 16px 20px; background: var(--accent-soft);
  border-radius: var(--radius); color: var(--sub);
}
.content blockquote p:last-child { margin-bottom: 0; }
.table-wrap { overflow-x: auto; margin: 0 0 24px; }
.content table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 420px; }
.content th, .content td { border-bottom: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.content th { background: var(--soft); font-weight: 600; }

.summary-box {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; margin: 0 0 28px; font-size: 16px;
}
.summary-box strong { display: block; margin-bottom: 6px; }
.summary-box ul { margin: 0; padding-left: 20px; }

/* 광고 자리 — 애드센스 승인 후 코드 삽입 */
.ad-slot { margin: 32px 0; min-height: 100px; display: flex; align-items: center; justify-content: center; }
.ad-slot.preview { background: var(--soft); border: 1px dashed var(--line); border-radius: 8px; color: var(--muted); font-size: 13px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 40px 0 0; }
.tags a, .tags span { font-size: 14px; color: var(--sub); background: var(--soft); padding: 5px 12px; border-radius: 999px; }
.tags a:hover { color: var(--accent); }

.author {
  display: flex; gap: 16px; align-items: center;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 24px 0; margin: 40px 0;
}
.avatar { flex: none; width: 56px; height: 56px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-weight: 700; font-size: 20px; }
.author strong { display: block; font-size: 16px; }
.author p { margin: 2px 0 0; font-size: 14px; color: var(--sub); }

.related { padding: 8px 0 24px; }

/* ---------- 기본 페이지 (소개·개인정보·문의) ---------- */
.page { padding: 40px 0 24px; }
.page h1 { font-size: 28px; margin: 0 0 20px; }

/* ---------- 푸터 ---------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 72px; padding: 32px 0 40px; font-size: 14px; color: var(--muted); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links a:hover { color: var(--text); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }