:root {
  --bi-primary: #2D6A4F;
  --bi-primary-light: #40916C;
  --bi-primary-pale: #D8F3DC;
  --bi-accent: #E07A5F;
  --bi-accent-light: #F2CC8F;
  --bi-neutral-900: #1B2430;
  --bi-neutral-700: #374151;
  --bi-neutral-500: #6B7280;
  --bi-neutral-300: #D1D5DB;
  --bi-neutral-100: #F3F4F6;
  --bi-white: #FFFFFF;
  --bi-bg: #FAFBFC;
  --bi-font-heading: 'Noto Serif KR', serif;
  --bi-font-body: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  --bi-radius-sm: 8px;
  --bi-radius-md: 12px;
  --bi-radius-lg: 16px;
  --bi-shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --bi-shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --bi-shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --bi-space-xs: 8px;
  --bi-space-sm: 16px;
  --bi-space-md: 24px;
  --bi-space-lg: 40px;
  --bi-space-xl: 64px;
  --bi-space-2xl: 96px;
  --bi-space-3xl: 128px;
  --bi-content-width: 780px;
  --bi-wide-width: 1200px;
  --bi-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* GLOBAL RESET & BASE */
body {
  font-family: var(--bi-font-body) !important;
  background: var(--bi-bg) !important;
  color: var(--bi-neutral-700) !important;
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

*, *::before, *::after { box-sizing: border-box; }

img { max-width: 100%; height: auto; }

/* Hide WP default footer credits */
.wp-site-blocks .wp-block-template-part:last-child a[href*="wordpress.org"],
.powered-by-wordpress,
footer a[href*="wordpress.org"],
.wp-block-site-title + .wp-block-site-tagline,
a[href*="wordpress.org/"] { display: none !important; }

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--bi-font-heading) !important;
  color: var(--bi-neutral-900) !important;
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 700;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.85rem); margin: 2em 0 0.8em; }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.4rem); margin: 1.5em 0 0.6em; }

p { margin-bottom: 1.25em; }

/* HEADER / NAV */
.bi-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bi-neutral-300);
  padding: 0 var(--bi-space-md);
}
.bi-header-inner {
  max-width: var(--bi-wide-width);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.bi-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.bi-logo img { width: 36px; height: 36px; border-radius: 8px; }
.bi-logo-text { font-family: var(--bi-font-heading); font-weight: 700; font-size: 1.1rem; color: var(--bi-primary); }
.bi-nav { display: flex; gap: 4px; }
.bi-nav a {
  padding: 8px 14px; border-radius: var(--bi-radius-sm);
  font-size: 0.9rem; font-weight: 500; color: var(--bi-neutral-700);
  text-decoration: none; transition: all var(--bi-transition);
}
.bi-nav a:hover { background: var(--bi-primary-pale); color: var(--bi-primary); }
.bi-menu-toggle { display: none; background: none; border: none; padding: 8px; cursor: pointer; }
.bi-menu-toggle svg { width: 24px; height: 24px; stroke: var(--bi-neutral-700); }

@media (max-width: 768px) {
  .bi-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--bi-white); flex-direction: column; padding: var(--bi-space-sm); border-bottom: 1px solid var(--bi-neutral-300); box-shadow: var(--bi-shadow-md); }
  .bi-nav.active { display: flex; }
  .bi-menu-toggle { display: block; }
}

/* SINGLE POST LAYOUT */
.wp-site-blocks { padding-top: 0 !important; }

body.single-post .wp-block-post-content,
body.single-post .entry-content,
body.page .wp-block-post-content,
body.page .entry-content {
  max-width: var(--bi-content-width) !important;
  margin: 0 auto !important;
  padding: var(--bi-space-lg) var(--bi-space-md) var(--bi-space-2xl) !important;
  font-size: 17px !important;
  line-height: 1.78 !important;
}

body.single-post article,
body.page article {
  background: var(--bi-white);
  border-radius: var(--bi-radius-lg);
  box-shadow: var(--bi-shadow-sm);
  overflow: hidden;
  margin: var(--bi-space-lg) auto;
  max-width: 900px;
}

/* Post header */
body.single-post .wp-block-post-title,
body.single-post h1.entry-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem) !important;
  padding: var(--bi-space-lg) var(--bi-space-md) 0 !important;
  max-width: var(--bi-content-width);
  margin: 0 auto !important;
  color: var(--bi-neutral-900) !important;
}

/* Featured image in single */
body.single-post .wp-post-image,
body.single-post .wp-block-post-featured-image img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 0;
}

/* Content elements */
.entry-content h2,
.wp-block-post-content h2 {
  color: var(--bi-primary) !important;
  padding-bottom: 0.4em;
  border-bottom: 2px solid var(--bi-primary-pale);
}

.entry-content h3,
.wp-block-post-content h3 {
  color: var(--bi-primary-light) !important;
}

/* Tables */
.entry-content table,
.wp-block-post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  border-radius: var(--bi-radius-md);
  overflow: hidden;
  font-size: 0.92em;
}
.entry-content table thead th,
.wp-block-post-content table thead th {
  background: var(--bi-primary);
  color: var(--bi-white);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}
.entry-content table td,
.wp-block-post-content table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--bi-neutral-100);
}
.entry-content table tr:nth-child(even),
.wp-block-post-content table tr:nth-child(even) { background: var(--bi-neutral-100); }
.entry-content table tr:hover,
.wp-block-post-content table tr:hover { background: var(--bi-primary-pale); }

@media (max-width: 600px) {
  .entry-content table, .wp-block-post-content table {
    display: block; overflow-x: auto; -webkit-overflow-scrolling: touch;
  }
}

/* Blockquote / Callout */
.entry-content blockquote,
.wp-block-post-content blockquote {
  background: linear-gradient(135deg, var(--bi-primary-pale) 0%, #f0fdf4 100%);
  border-left: 4px solid var(--bi-primary);
  border-radius: 0 var(--bi-radius-md) var(--bi-radius-md) 0;
  padding: var(--bi-space-md);
  margin: 1.5em 0;
  font-style: normal;
  color: var(--bi-neutral-900);
}

/* Lists */
.entry-content ul, .entry-content ol,
.wp-block-post-content ul, .wp-block-post-content ol {
  padding-left: 1.5em;
  margin: 1em 0;
}
.entry-content li, .wp-block-post-content li {
  margin-bottom: 0.5em;
  line-height: 1.7;
}

/* Images in content */
.entry-content img,
.wp-block-post-content img {
  border-radius: var(--bi-radius-md);
  box-shadow: var(--bi-shadow-sm);
  margin: 1.5em 0;
}

/* Legal / AI notice */
.legal-notice { font-size: 0.85em !important; }
.ai-notice { font-size: 0.85em !important; }
.affiliate-notice { font-size: 0.9em !important; }

/* BUTTONS / CTA */
.bi-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px;
  background: var(--bi-primary);
  color: var(--bi-white);
  border: none; border-radius: var(--bi-radius-sm);
  font-family: var(--bi-font-body);
  font-size: 0.95rem; font-weight: 600;
  cursor: pointer; text-decoration: none;
  transition: all var(--bi-transition);
}
.bi-btn:hover { background: var(--bi-primary-light); transform: translateY(-1px); box-shadow: var(--bi-shadow-md); }

.bi-btn-outline {
  background: transparent;
  border: 2px solid var(--bi-primary);
  color: var(--bi-primary);
}
.bi-btn-outline:hover { background: var(--bi-primary); color: var(--bi-white); }

/* CARDS */
.bi-card {
  background: var(--bi-white);
  border-radius: var(--bi-radius-lg);
  overflow: hidden;
  box-shadow: var(--bi-shadow-sm);
  transition: all var(--bi-transition);
}
.bi-card:hover { box-shadow: var(--bi-shadow-lg); transform: translateY(-4px); }
.bi-card-img {
  width: 100%; aspect-ratio: 16/10; object-fit: cover;
}
.bi-card-body { padding: var(--bi-space-md); }
.bi-card-title {
  font-family: var(--bi-font-heading);
  font-size: 1.1rem; font-weight: 700;
  color: var(--bi-neutral-900);
  margin-bottom: 8px; line-height: 1.4;
}
.bi-card-excerpt {
  font-size: 0.9rem; color: var(--bi-neutral-500);
  line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.bi-card-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 12px; color: var(--bi-primary); font-weight: 600;
  font-size: 0.9rem; text-decoration: none;
  transition: gap var(--bi-transition);
}
.bi-card-link:hover { gap: 8px; }

/* FOOTER */
.bi-footer {
  background: var(--bi-neutral-900);
  color: var(--bi-neutral-300);
  padding: var(--bi-space-2xl) var(--bi-space-md) var(--bi-space-lg);
}
.bi-footer-inner {
  max-width: var(--bi-wide-width); margin: 0 auto;
}
.bi-footer a { color: var(--bi-neutral-300); text-decoration: none; }
.bi-footer a:hover { color: var(--bi-white); }
.bi-footer-brand { font-family: var(--bi-font-heading); font-size: 1.2rem; font-weight: 700; color: var(--bi-white); margin-bottom: var(--bi-space-sm); }
.bi-footer-desc { font-size: 0.88rem; line-height: 1.7; max-width: 480px; margin-bottom: var(--bi-space-lg); }
.bi-footer-links { display: flex; flex-wrap: wrap; gap: var(--bi-space-md); margin-bottom: var(--bi-space-lg); }
.bi-footer-links a { font-size: 0.88rem; }
.bi-footer-legal { font-size: 0.8rem; color: var(--bi-neutral-500); line-height: 1.7; border-top: 1px solid rgba(255,255,255,0.1); padding-top: var(--bi-space-md); margin-top: var(--bi-space-md); }
.bi-footer-copyright { font-size: 0.8rem; color: var(--bi-neutral-500); margin-top: var(--bi-space-sm); }

/* Scroll animations */
.bi-fade-up {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.bi-fade-up.visible { opacity: 1; transform: translateY(0); }

/* Focus ring for a11y */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--bi-primary);
  outline-offset: 2px;
}

/* HIDE default WP chrome */
body.single-post .wp-block-template-part,
body.page .wp-block-template-part { display: none !important; }
body.single-post #page > header,
body.single-post #page > footer,
body.page #page > header,
body.page #page > footer { display: none !important; }