:root {
  --wvi-primary: #1a365d;
  --wvi-primary-light: #2b6cb0;
  --wvi-primary-dark: #0f2440;
  --wvi-accent: #3182ce;
  --wvi-accent-hover: #2c5282;
  --wvi-bg: #ffffff;
  --wvi-bg-alt: #f7fafc;
  --wvi-bg-card: #ffffff;
  --wvi-text: #1a202c;
  --wvi-text-secondary: #4a5568;
  --wvi-text-muted: #718096;
  --wvi-border: #e2e8f0;
  --wvi-border-light: #edf2f7;
  --wvi-success: #38a169;
  --wvi-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --wvi-shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --wvi-shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --wvi-radius-sm: 6px;
  --wvi-radius-md: 12px;
  --wvi-radius-lg: 16px;
  --wvi-font: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  --wvi-font-serif: 'Georgia', 'Times New Roman', serif;
  --wvi-max-width: 1200px;
  --wvi-content-width: 780px;
  --wvi-space-xs: 4px;
  --wvi-space-sm: 8px;
  --wvi-space-md: 16px;
  --wvi-space-lg: 24px;
  --wvi-space-xl: 32px;
  --wvi-space-2xl: 48px;
  --wvi-space-3xl: 64px;
  --wvi-space-4xl: 96px;
  --wvi-space-5xl: 128px;
  --wvi-transition: 200ms ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--wvi-font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--wvi-text);
  background: var(--wvi-bg);
  overflow-x: hidden;
}

a { color: var(--wvi-accent); text-decoration: none; transition: color var(--wvi-transition); }
a:hover { color: var(--wvi-accent-hover); }

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

/* Override TT5 defaults completely */
.wp-site-blocks, .has-global-padding { padding: 0 !important; }
.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)) { max-width: none !important; margin-left: auto !important; margin-right: auto !important; }

/* ===== HEADER ===== */
.wvi-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--wvi-border-light);
  transition: box-shadow var(--wvi-transition);
}
.wvi-header.scrolled { box-shadow: var(--wvi-shadow-sm); }
.wvi-header-inner {
  max-width: var(--wvi-max-width);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--wvi-space-lg);
  height: 64px;
}
.wvi-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.wvi-logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--wvi-primary), var(--wvi-accent));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
}
.wvi-logo-icon svg { width: 22px; height: 22px; fill: #fff; }
.wvi-logo-text {
  font-size: 1.05rem; font-weight: 700; color: var(--wvi-primary);
  letter-spacing: -0.02em;
}
.wvi-nav { display: flex; gap: 4px; align-items: center; }
.wvi-nav a {
  padding: 8px 14px; border-radius: var(--wvi-radius-sm);
  font-size: 0.9rem; font-weight: 500; color: var(--wvi-text-secondary);
  transition: all var(--wvi-transition);
}
.wvi-nav a:hover { color: var(--wvi-primary); background: var(--wvi-bg-alt); }
.wvi-nav-mobile { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.wvi-nav-mobile svg { width: 24px; height: 24px; stroke: var(--wvi-text); }

/* ===== HERO ===== */
.wvi-hero {
  margin-top: 64px;
  position: relative;
  min-height: 540px;
  display: flex; align-items: center;
  overflow: hidden;
  background: var(--wvi-primary-dark);
}
.wvi-hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0.35;
}
.wvi-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,36,64,0.92) 0%, rgba(26,54,93,0.78) 50%, rgba(49,130,206,0.55) 100%);
}
.wvi-hero-content {
  position: relative; z-index: 2;
  max-width: var(--wvi-max-width);
  margin: 0 auto;
  padding: var(--wvi-space-4xl) var(--wvi-space-lg);
  color: #fff;
}
.wvi-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--wvi-space-lg);
}
.wvi-hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.7;
  max-width: 560px;
  color: rgba(255,255,255,0.88);
  margin-bottom: var(--wvi-space-xl);
}
.wvi-hero-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  background: var(--wvi-accent);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--wvi-radius-sm);
  transition: all var(--wvi-transition);
  border: none; cursor: pointer;
}
.wvi-hero-cta:hover { background: var(--wvi-accent-hover); color: #fff; transform: translateY(-1px); box-shadow: var(--wvi-shadow-md); }

/* ===== SECTIONS ===== */
.wvi-section {
  padding: var(--wvi-space-5xl) var(--wvi-space-lg);
}
.wvi-section-alt { background: var(--wvi-bg-alt); }
.wvi-section-inner {
  max-width: var(--wvi-max-width);
  margin: 0 auto;
}
.wvi-section-header {
  text-align: center;
  margin-bottom: var(--wvi-space-3xl);
}
.wvi-section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--wvi-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--wvi-space-md);
}
.wvi-section-header p {
  font-size: 1.05rem;
  color: var(--wvi-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}
.wvi-section-line {
  width: 48px; height: 3px;
  background: var(--wvi-accent);
  border-radius: 2px;
  margin: var(--wvi-space-md) auto 0;
}

/* ===== CARDS GRID ===== */
.wvi-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--wvi-space-lg);
}
.wvi-card {
  background: var(--wvi-bg-card);
  border-radius: var(--wvi-radius-md);
  overflow: hidden;
  box-shadow: var(--wvi-shadow-sm);
  transition: all 250ms ease;
  border: 1px solid var(--wvi-border-light);
}
.wvi-card:hover { transform: translateY(-4px); box-shadow: var(--wvi-shadow-lg); }
.wvi-card-img {
  width: 100%; height: 220px;
  object-fit: cover;
  border-bottom: 1px solid var(--wvi-border-light);
}
.wvi-card-body { padding: var(--wvi-space-lg); }
.wvi-card-cat {
  display: inline-block;
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
  color: var(--wvi-accent);
  letter-spacing: 0.05em;
  margin-bottom: var(--wvi-space-sm);
}
.wvi-card-title {
  font-size: 1.15rem; font-weight: 700;
  color: var(--wvi-text);
  line-height: 1.4;
  margin-bottom: var(--wvi-space-sm);
}
.wvi-card-title a { color: inherit; }
.wvi-card-title a:hover { color: var(--wvi-accent); }
.wvi-card-excerpt {
  font-size: 0.9rem;
  color: var(--wvi-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--wvi-space-md);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.wvi-card-link {
  font-size: 0.85rem; font-weight: 600;
  color: var(--wvi-accent);
  display: inline-flex; align-items: center; gap: 4px;
}
.wvi-card-link:hover { gap: 8px; }

/* ===== CAROUSEL ===== */
.wvi-carousel {
  display: flex; gap: var(--wvi-space-lg);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--wvi-space-md);
  scrollbar-width: none;
}
.wvi-carousel::-webkit-scrollbar { display: none; }
.wvi-carousel-item {
  flex: 0 0 340px;
  scroll-snap-align: start;
}

/* ===== STEPS ===== */
.wvi-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--wvi-space-lg);
  counter-reset: step;
}
.wvi-step {
  text-align: center;
  padding: var(--wvi-space-xl) var(--wvi-space-md);
  position: relative;
}
.wvi-step::before {
  counter-increment: step;
  content: counter(step);
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--wvi-primary);
  color: #fff;
  font-size: 1.1rem; font-weight: 700;
  margin: 0 auto var(--wvi-space-md);
}
.wvi-step h3 {
  font-size: 1rem; font-weight: 700;
  color: var(--wvi-text);
  margin-bottom: var(--wvi-space-sm);
}
.wvi-step p {
  font-size: 0.88rem;
  color: var(--wvi-text-secondary);
  line-height: 1.6;
}

/* ===== FOOTER ===== */
.wvi-footer {
  background: var(--wvi-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: var(--wvi-space-3xl) var(--wvi-space-lg) var(--wvi-space-xl);
}
.wvi-footer-inner {
  max-width: var(--wvi-max-width);
  margin: 0 auto;
}
.wvi-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--wvi-space-2xl);
  margin-bottom: var(--wvi-space-2xl);
}
.wvi-footer h4 {
  font-size: 0.9rem; font-weight: 600;
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--wvi-space-md);
}
.wvi-footer p { font-size: 0.85rem; line-height: 1.7; }
.wvi-footer a { color: rgba(255,255,255,0.7); }
.wvi-footer a:hover { color: #fff; }
.wvi-footer-links { list-style: none; }
.wvi-footer-links li { margin-bottom: var(--wvi-space-sm); }
.wvi-footer-links a { font-size: 0.85rem; }
.wvi-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--wvi-space-lg);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--wvi-space-md);
}
.wvi-footer-bottom p { font-size: 0.8rem; }
.wvi-footer-legal {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  margin-top: var(--wvi-space-md);
}

/* ===== SINGLE POST ===== */
.wvi-single { margin-top: 64px; }
.wvi-single-hero {
  position: relative;
  height: 360px;
  overflow: hidden;
  background: var(--wvi-primary-dark);
}
.wvi-single-hero img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.4;
}
.wvi-single-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(15,36,64,0.9) 0%, rgba(15,36,64,0.4) 100%);
  display: flex; align-items: flex-end;
}
.wvi-single-hero-content {
  max-width: var(--wvi-content-width);
  margin: 0 auto;
  padding: var(--wvi-space-2xl) var(--wvi-space-lg);
  color: #fff;
  width: 100%;
}
.wvi-single-hero-content h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.wvi-single-meta {
  margin-top: var(--wvi-space-sm);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}

/* Single content */
.wvi-content {
  max-width: var(--wvi-content-width);
  margin: 0 auto;
  padding: var(--wvi-space-2xl) var(--wvi-space-lg) var(--wvi-space-4xl);
}
.wvi-content h2 {
  font-size: 1.5rem; font-weight: 700;
  color: var(--wvi-primary);
  margin: var(--wvi-space-2xl) 0 var(--wvi-space-md);
  padding-bottom: var(--wvi-space-sm);
  border-bottom: 2px solid var(--wvi-border-light);
}
.wvi-content h3 {
  font-size: 1.2rem; font-weight: 700;
  color: var(--wvi-text);
  margin: var(--wvi-space-xl) 0 var(--wvi-space-sm);
}
.wvi-content p {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--wvi-text);
  margin-bottom: var(--wvi-space-md);
}
.wvi-content ul, .wvi-content ol {
  padding-left: var(--wvi-space-lg);
  margin-bottom: var(--wvi-space-md);
}
.wvi-content li {
  margin-bottom: var(--wvi-space-sm);
  line-height: 1.7;
  font-size: 1rem;
}
.wvi-content img {
  border-radius: var(--wvi-radius-md);
  margin: var(--wvi-space-xl) 0;
  box-shadow: var(--wvi-shadow-sm);
}
.wvi-content blockquote {
  border-left: 4px solid var(--wvi-accent);
  padding: var(--wvi-space-md) var(--wvi-space-lg);
  margin: var(--wvi-space-xl) 0;
  background: var(--wvi-bg-alt);
  border-radius: 0 var(--wvi-radius-sm) var(--wvi-radius-sm) 0;
  font-size: 1rem;
  color: var(--wvi-text-secondary);
}
.wvi-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--wvi-space-xl) 0;
  font-size: 0.92rem;
  border-radius: var(--wvi-radius-sm);
  overflow: hidden;
  box-shadow: var(--wvi-shadow-sm);
}
.wvi-content table thead th {
  background: var(--wvi-primary);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.88rem;
}
.wvi-content table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--wvi-border-light);
  vertical-align: top;
}
.wvi-content table tr:nth-child(even) { background: var(--wvi-bg-alt); }
.wvi-content table tr:hover { background: #edf2f7; }
.wvi-content .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* Callout */
.wvi-callout {
  background: linear-gradient(135deg, #ebf4ff 0%, #f0f7ff 100%);
  border: 1px solid #bee3f8;
  border-radius: var(--wvi-radius-md);
  padding: var(--wvi-space-lg);
  margin: var(--wvi-space-xl) 0;
}
.wvi-callout-title {
  font-weight: 700;
  color: var(--wvi-primary);
  margin-bottom: var(--wvi-space-sm);
  font-size: 0.95rem;
}
.wvi-callout p { margin-bottom: 0; font-size: 0.95rem; }

/* Summary box */
.wvi-summary {
  background: var(--wvi-bg-alt);
  border: 1px solid var(--wvi-border);
  border-radius: var(--wvi-radius-md);
  padding: var(--wvi-space-lg);
  margin-bottom: var(--wvi-space-xl);
}
.wvi-summary h3 {
  font-size: 1rem; margin: 0 0 var(--wvi-space-sm); color: var(--wvi-primary);
}
.wvi-summary ul { margin-bottom: 0; }

/* Related posts */
.wvi-related {
  margin-top: var(--wvi-space-3xl);
  padding-top: var(--wvi-space-2xl);
  border-top: 1px solid var(--wvi-border);
}
.wvi-related h2 {
  border: none;
  text-align: center;
  margin-bottom: var(--wvi-space-xl);
}
.wvi-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--wvi-space-md);
}
.wvi-related-card {
  display: flex; gap: var(--wvi-space-md);
  padding: var(--wvi-space-md);
  border-radius: var(--wvi-radius-sm);
  border: 1px solid var(--wvi-border-light);
  transition: all var(--wvi-transition);
}
.wvi-related-card:hover { box-shadow: var(--wvi-shadow-sm); border-color: var(--wvi-border); }
.wvi-related-card img {
  width: 80px; height: 80px;
  object-fit: cover;
  border-radius: var(--wvi-radius-sm);
  flex-shrink: 0;
  margin: 0;
  box-shadow: none;
}
.wvi-related-card-title {
  font-size: 0.9rem; font-weight: 600;
  color: var(--wvi-text);
  line-height: 1.4;
}

/* PAGE template */
.wvi-page { margin-top: 64px; padding: var(--wvi-space-3xl) var(--wvi-space-lg); }
.wvi-page-inner { max-width: var(--wvi-content-width); margin: 0 auto; }
.wvi-page h1 {
  font-size: 1.8rem; font-weight: 700;
  color: var(--wvi-primary);
  margin-bottom: var(--wvi-space-xl);
  padding-bottom: var(--wvi-space-md);
  border-bottom: 2px solid var(--wvi-border);
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .wvi-nav { display: none; }
  .wvi-nav.open {
    display: flex; flex-direction: column;
    position: absolute; top: 64px; left: 0; right: 0;
    background: #fff;
    padding: var(--wvi-space-md);
    box-shadow: var(--wvi-shadow-md);
    border-bottom: 1px solid var(--wvi-border);
  }
  .wvi-nav-mobile { display: block; }
  .wvi-hero { min-height: 420px; }
  .wvi-hero-content { padding: var(--wvi-space-2xl) var(--wvi-space-md); }
  .wvi-section { padding: var(--wvi-space-3xl) var(--wvi-space-md); }
  .wvi-cards { grid-template-columns: 1fr; }
  .wvi-carousel-item { flex: 0 0 85vw; }
  .wvi-footer-grid { grid-template-columns: 1fr; gap: var(--wvi-space-xl); }
  .wvi-footer-bottom { flex-direction: column; text-align: center; }
  .wvi-steps { grid-template-columns: 1fr 1fr; }
  .wvi-single-hero { height: 280px; }
  .wvi-related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .wvi-steps { grid-template-columns: 1fr; }
  .wvi-carousel-item { flex: 0 0 92vw; }
}

/* ===== ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
  .wvi-fade-in {
    opacity: 0; transform: translateY(20px);
    transition: opacity 500ms ease, transform 500ms ease;
  }
  .wvi-fade-in.visible { opacity: 1; transform: translateY(0); }
}

/* Dark mode prevention - keep light */
@media (prefers-color-scheme: dark) {
  :root { color-scheme: light; }
}

/* Focus styles for accessibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--wvi-accent);
  outline-offset: 2px;
}

/* TABLE */
.wvi-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.wvi-table thead tr {
  background: var(--wvi-primary);
  color: #fff;
}
.wvi-table th {
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
}
.wvi-table td {
  padding: 12px 16px;
}
.wvi-table td strong {
  color: var(--wvi-primary);
}
.wvi-table tbody tr {
  border-bottom: 1px solid var(--wvi-border);
}
.wvi-table tbody tr:nth-child(even) {
  background: var(--wvi-bg-alt);
}