:root {
  --color-primary: #1a365d;
  --color-primary-light: #2a4a7f;
  --color-primary-dark: #0f2440;
  --color-accent: #c9a84c;
  --color-accent-light: #dbbf6a;
  --color-accent-dark: #a88a35;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f8fc;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-success: #059669;
  --color-info: #0284c7;
  --color-warning: #d97706;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 48px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-16: 128px;
  --font-sans: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Noto Serif KR', Georgia, serif;
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --content-width: 1200px;
  --article-width: 760px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-accent); }
a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }

/* === WORDPRESS OVERRIDES === */
.wp-site-blocks, .is-layout-constrained, .is-layout-flow {
  max-width: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
}
.wp-block-post-content, .entry-content {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}
body .is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)) {
  max-width: 100%;
}
header.wp-block-template-part, footer.wp-block-template-part { display: none !important; }

/* === SITE HEADER === */
.dt-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}
.dt-header.scrolled { box-shadow: var(--shadow-md); }
.dt-header-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  height: 64px;
}
.dt-logo {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary);
}
.dt-logo img { width: 36px; height: 36px; border-radius: var(--radius-sm); }
.dt-logo span { letter-spacing: -0.02em; }
.dt-nav { display: flex; gap: var(--space-3); align-items: center; }
.dt-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-1) 0;
  position: relative;
  transition: color var(--transition-fast);
}
.dt-nav a:hover, .dt-nav a.active { color: var(--color-primary); }
.dt-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}
.dt-nav a:hover::after, .dt-nav a.active::after { transform: scaleX(1); }
.dt-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
  color: var(--color-text);
}
.dt-nav-toggle svg { width: 24px; height: 24px; }

/* === ARTICLE SINGLE === */
.dt-article { padding-top: 80px; }
.dt-article-hero {
  width: 100%;
  max-height: 480px;
  overflow: hidden;
  border-radius: 0;
}
.dt-article-hero img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}
.dt-article-body {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: var(--space-6) var(--space-3) var(--space-12);
}
.dt-article-body h1 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}
.dt-article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: var(--space-8) 0 var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-accent);
  line-height: 1.4;
}
.dt-article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin: var(--space-5) 0 var(--space-2);
  line-height: 1.45;
}
.dt-article-body p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--space-3);
  color: var(--color-text);
  word-break: keep-all;
}
.dt-article-body ul, .dt-article-body ol {
  margin: var(--space-3) 0;
  padding-left: var(--space-4);
}
.dt-article-body li {
  margin-bottom: var(--space-1);
  line-height: 1.7;
  font-size: 1.02rem;
}
.dt-article-body blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-bg-alt);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-4) 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: normal;
}
.dt-article-body blockquote p { margin-bottom: 0; color: var(--color-text); }
.dt-article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.dt-article-body thead th {
  background: var(--color-primary);
  color: #fff;
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}
.dt-article-body tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-light);
}
.dt-article-body tbody tr:nth-child(even) { background: var(--color-bg-alt); }
.dt-article-body tbody tr:hover { background: #eef2ff; }
.dt-article-body .dt-callout {
  background: linear-gradient(135deg, #eff6ff, #f0f9ff);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-4) 0;
}
.dt-article-body .dt-callout p { margin-bottom: 0; }
.dt-article-body .dt-callout strong { color: var(--color-primary); }
.dt-article-body img {
  border-radius: var(--radius-md);
  margin: var(--space-4) 0;
  box-shadow: var(--shadow-md);
}
.dt-article-body .dt-chart-bar {
  margin: var(--space-3) 0;
}
.dt-article-body .dt-chart-bar .dt-bar-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}
.dt-article-body .dt-chart-bar .dt-bar-label {
  flex: 0 0 120px;
  font-size: 0.9rem;
  font-weight: 500;
  text-align: right;
  color: var(--color-text-muted);
}
.dt-article-body .dt-chart-bar .dt-bar-track {
  flex: 1;
  height: 28px;
  background: var(--color-bg-alt);
  border-radius: 14px;
  overflow: hidden;
}
.dt-article-body .dt-chart-bar .dt-bar-fill {
  height: 100%;
  border-radius: 14px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  transition: width 1s ease;
}

/* Legal/AI notices */
.legal-notice { font-size: 0.85em !important; }
.ai-notice { font-size: 0.85em !important; }

/* === RELATED POSTS === */
.dt-related {
  max-width: var(--article-width);
  margin: 0 auto var(--space-10);
  padding: 0 var(--space-3);
}
.dt-related h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.dt-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.dt-related-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.dt-related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.dt-related-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}
.dt-related-card .card-body {
  padding: var(--space-2) var(--space-3);
}
.dt-related-card .card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}

/* === FOOTER === */
.dt-footer {
  background: var(--color-bg-dark);
  color: #cbd5e1;
  padding: var(--space-10) var(--space-3) var(--space-6);
}
.dt-footer-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
}
.dt-footer-brand h3 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
}
.dt-footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: #94a3b8;
}
.dt-footer-links h4 {
  color: #fff;
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.dt-footer-links a {
  display: block;
  color: #94a3b8;
  font-size: 0.88rem;
  padding: 4px 0;
  transition: color var(--transition-fast);
}
.dt-footer-links a:hover { color: var(--color-accent); }
.dt-footer-legal {
  max-width: var(--content-width);
  margin: var(--space-6) auto 0;
  padding-top: var(--space-4);
  border-top: 1px solid #1e293b;
  font-size: 0.8rem;
  color: #64748b;
  line-height: 1.7;
}
.dt-footer-legal p { margin-bottom: var(--space-1); }
.dt-footer-copy {
  max-width: var(--content-width);
  margin: var(--space-3) auto 0;
  text-align: center;
  font-size: 0.78rem;
  color: #475569;
}

/* === TABLE SCROLL on mobile === */
.dt-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-4) 0;
}
.dt-table-wrap table { min-width: 480px; margin: 0; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .dt-header-inner { padding: var(--space-1) var(--space-2); }
  .dt-nav { display: none; position: fixed; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; padding: var(--space-3); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-lg); z-index: 999; }
  .dt-nav.open { display: flex; }
  .dt-nav-toggle { display: block; }
  .dt-article-hero img { height: 280px; }
  .dt-article-body h1 { font-size: 1.6rem; }
  .dt-article-body h2 { font-size: 1.25rem; }
  .dt-footer-inner { grid-template-columns: 1fr; gap: var(--space-4); }
  .dt-related-grid { grid-template-columns: 1fr; }
  .dt-chart-bar .dt-bar-label { flex: 0 0 80px; font-size: 0.8rem; }
}
@media (max-width: 480px) {
  .dt-article-body { padding: var(--space-4) var(--space-2) var(--space-8); }
  .dt-article-body h1 { font-size: 1.4rem; }
}