:root {
  --bg: #f8f9ff;
  --surface: #ffffff;
  --surface-soft: #eef4ff;
  --surface-strong: #dfe8f7;
  --ink: #121c2a;
  --muted: #5f6875;
  --line: #d7e0ec;
  --primary: #003527;
  --primary-2: #0b513d;
  --accent: #b0f0d6;
  --accent-soft: #e1f7ee;
  --danger: #ba1a1a;
  --shadow: 0 18px 50px rgba(18, 28, 42, 0.08);
  --radius: 8px;
  --container: 1200px;
  --body: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
  word-break: keep-all;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary-2); }
button, input, textarea, select { font: inherit; }

.container {
  width: min(100% - 48px, var(--container));
  margin: 0 auto;
}

.narrow { width: min(100% - 48px, 820px); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(248, 249, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: auto;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

.site-nav a:first-child,
.site-nav a:hover { color: var(--primary); }

.nav-actions { display: flex; align-items: center; gap: 10px; }

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius);
  border: 1px solid var(--primary);
  font-weight: 800;
  cursor: pointer;
}

.primary-button { background: var(--primary); color: #fff; }
.primary-button:hover { color: #fff; background: var(--primary-2); }
.primary-button.small { min-height: 40px; padding: 0 16px; font-size: 14px; }
.secondary-button { background: var(--surface); color: var(--primary); }
.ghost-link { color: var(--muted); font-weight: 700; }

.hero {
  background: var(--surface-soft);
  padding: 64px 0;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  align-items: center;
  gap: 48px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1,
.article-header h1 {
  margin: 0;
  color: var(--primary);
  font-size: clamp(32px, 4.2vw, 46px);
  line-height: 1.18;
  letter-spacing: 0;
}

.hero-lede,
.page-hero p,
.post-lede {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 620px;
  margin-top: 28px;
  padding: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.search-box input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 12px 14px;
  background: transparent;
}

.search-box button {
  border: 0;
  border-radius: var(--radius);
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  padding: 12px 20px;
  cursor: pointer;
}

.keyword-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
}

.keyword-row a {
  color: var(--primary);
  font-weight: 700;
}

.hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: 0 24px 70px rgba(0, 53, 39, 0.18);
}

.category-band,
.content-band,
.faq-preview,
.cta-band,
.admin-page {
  padding: 72px 0;
}

.content-band { background: var(--surface); }

.section-heading {
  margin-bottom: 28px;
}

.section-heading h2,
.faq-preview h2,
.cta-box h2,
.seo-panel h2 {
  margin: 0;
  color: var(--primary);
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.3;
}

.section-heading.split,
.list-toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.text-link {
  color: var(--primary);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.category-card {
  display: flex;
  min-height: 150px;
  flex-direction: column;
  gap: 8px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.category-card:hover,
.post-card:hover,
.post-row:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.category-card strong {
  color: var(--primary);
  font-size: 20px;
  line-height: 1.35;
}

.category-card strong::before {
  content: "";
  display: block;
  width: 28px;
  height: 3px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--primary);
}

.category-card span { color: var(--muted); font-size: 14px; line-height: 1.55; }

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.post-card,
.post-row {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.post-thumb img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.post-card-body { padding: 24px; }
.card-category {
  margin: 0 0 10px;
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 900;
}

.post-card h3,
.post-row h2 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.38;
  letter-spacing: 0;
}

.card-desc {
  margin: 0;
  color: var(--muted);
}

.post-meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  color: #7b8490;
  font-size: 13px;
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.faq-preview p { color: var(--muted); }

.faq-list,
.faq {
  display: grid;
  gap: 12px;
}

.faq-list details,
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.faq-list summary,
.faq-item summary {
  color: var(--primary);
  font-weight: 900;
  cursor: pointer;
}

.faq-list p,
.faq-item p {
  margin: 10px 0 0;
  color: var(--muted);
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 44px;
  border-radius: var(--radius);
  background: var(--primary);
  color: #fff;
}

.cta-box h2,
.cta-box .eyebrow { color: #fff; }
.cta-box p { margin: 12px 0 0; color: rgba(255,255,255,0.78); }
.cta-box .primary-button { background: #fff; color: var(--primary); border-color: #fff; }

.page-hero,
.article-header {
  padding: 56px 0;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line);
}

.page-hero .primary-button { margin-top: 24px; }

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 14px;
}

.breadcrumb a { color: var(--primary); font-weight: 700; }

.post-list {
  display: grid;
  gap: 18px;
}

.post-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  padding: 20px;
}

.row-thumb img {
  width: 100%;
  height: 100%;
  min-height: 170px;
  object-fit: cover;
  border-radius: var(--radius);
}

.article-cover {
  margin-top: 36px;
}

.article-cover img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.article-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 760px);
  gap: 56px;
  align-items: start;
  padding: 56px 0 80px;
}

.article-aside {
  position: sticky;
  top: 108px;
}

.summary-card,
.author-box,
.seo-panel,
.admin-panel,
.serp-preview {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.summary-card strong { color: var(--primary); }
.summary-card p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
}

.article-main.standalone { padding: 56px 0 80px; }

.post-body {
  color: #27313f;
  font-size: 18px;
  line-height: 1.85;
}

.post-body h2 {
  margin: 44px 0 14px;
  color: var(--primary);
  font-size: 28px;
  line-height: 1.35;
  letter-spacing: 0;
}

.post-body h3 {
  margin: 32px 0 12px;
  color: var(--ink);
  font-size: 22px;
}

.post-body p { margin: 0 0 18px; }
.post-body a { color: var(--primary-2); text-decoration: underline; text-underline-offset: 4px; }
.post-body img { border-radius: var(--radius); border: 1px solid var(--line); margin: 28px 0; }
.post-body blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  background: var(--accent-soft);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}

.post-body th,
.post-body td {
  border: 1px solid var(--line);
  padding: 12px;
  text-align: left;
}

.post-body th { background: var(--surface-soft); color: var(--primary); }

.faq { margin-top: 48px; }
.faq h2 { margin: 0 0 18px; color: var(--primary); }

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 18px 0 0;
}

.tags li {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
}

.author-box {
  margin-top: 42px;
}

.author-name { margin: 0 0 8px; font-weight: 900; color: var(--primary); }
.author-box p:last-child { margin: 0; color: var(--muted); }

.admin-shell,
.admin-editor {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 28px;
  align-items: start;
}

.admin-shell.compact {
  grid-template-columns: minmax(0, 520px);
  justify-content: center;
}

.admin-panel h1 {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 34px;
}

.admin-hint {
  margin: 0 0 24px;
  color: var(--muted);
}

.admin-form {
  display: grid;
  gap: 18px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 16px;
}

.admin-form label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.admin-form input,
.admin-form textarea,
.admin-form select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  padding: 12px 14px;
  outline: 0;
}

.admin-form input:focus,
.admin-form textarea:focus,
.admin-form select:focus {
  border-color: var(--primary-2);
  box-shadow: 0 0 0 3px rgba(11, 81, 61, 0.12);
}

.admin-faq {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.admin-faq legend {
  padding: 0 8px;
  color: var(--primary);
  font-weight: 900;
}

.admin-faq-item {
  display: grid;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}

.admin-faq-item:last-child { border-bottom: 0; }

.admin-images {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.admin-images img {
  width: 112px;
  height: 112px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.admin-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.seo-panel {
  color: var(--muted);
}

.sticky-panel {
  position: sticky;
  top: 104px;
}

.check-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.check-list li {
  position: relative;
  padding-left: 24px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary-2);
}

.serp-preview {
  margin-top: 20px;
}

.serp-preview span { color: #37735e; font-size: 13px; }
.serp-preview strong { display: block; margin-top: 6px; color: #1a0dab; font-size: 18px; line-height: 1.35; }
.serp-preview p { margin: 8px 0 0; color: #4d5156; font-size: 14px; }

.form-error {
  margin: 0 0 18px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid #f1c1bd;
  background: #fff2f0;
  color: var(--danger);
  font-weight: 700;
}

.badge-draft { color: var(--danger); font-weight: 900; }
.empty { color: var(--muted); padding: 28px 0; }

.site-footer {
  padding: 52px 0;
  background: #e4ecf8;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.8fr 1fr;
  gap: 36px;
}

.footer-brand { margin-bottom: 14px; }
.site-footer h2 { margin: 0 0 12px; color: var(--primary); font-size: 15px; }
.site-footer p { margin: 0; color: var(--muted); font-size: 14px; }
.site-footer ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.site-footer a { color: var(--muted); font-size: 14px; }

@media (max-width: 980px) {
  .site-nav { display: none; }
  .hero-grid,
  .faq-grid,
  .admin-shell,
  .admin-editor,
  .article-layout {
    grid-template-columns: 1fr;
  }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-aside,
  .sticky-panel { position: static; }
  .article-layout { gap: 28px; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .container,
  .narrow { width: min(100% - 32px, var(--container)); }
  .nav-shell { min-height: 68px; gap: 12px; }
  .brand span:last-child { max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .nav-actions .ghost-link { display: none; }
  .primary-button.small { padding: 0 12px; }
  .hero,
  .category-band,
  .content-band,
  .faq-preview,
  .cta-band,
  .admin-page { padding: 48px 0; }
  .hero-grid { gap: 28px; }
  .hero h1,
  .page-hero h1,
  .article-header h1 { font-size: 30px; }
  .hero-lede,
  .page-hero p,
  .post-lede { font-size: 16px; }
  .search-box { align-items: stretch; flex-direction: column; }
  .search-box button { width: 100%; }
  .post-grid,
  .footer-grid,
  .form-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .category-card { min-height: 132px; padding: 18px; }
  .category-card strong { font-size: 17px; }
  .category-card strong::before { margin-bottom: 14px; }
  .category-card span { font-size: 13px; line-height: 1.45; }
  .post-row { grid-template-columns: 1fr; }
  .row-thumb img { min-height: auto; aspect-ratio: 16 / 9; }
  .section-heading.split,
  .list-toolbar,
  .cta-box { align-items: flex-start; flex-direction: column; }
  .cta-box { padding: 28px; }
  .post-body { font-size: 17px; }
  .post-body h2 { font-size: 24px; }
}

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