:root {
  --bdn-primary: #1a56db;
  --bdn-primary-2: #1e40af;
  --bdn-primary-3: #1e3a8a;
  --bdn-text: #1e2329;
  --bdn-muted-text: #6b7280;
  --bdn-bg: #ffffff;
  --bdn-bg-soft: #f9fafb;
  --bdn-bg-soft-2: #eff6ff;
  --bdn-border: #e5e7eb;
  --bdn-accent-bg: #ebf2ff;
  --bdn-radius: 12px;
  --bdn-shadow: 0 12px 30px rgba(16, 24, 40, 0.08);
  --bdn-shadow-soft: 0 8px 22px rgba(16, 24, 40, 0.06);
  --bdn-font-headline: 'Sora', sans-serif;
  --bdn-font-body: 'Inter', sans-serif;
  --bdn-font-code: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

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

a {
  color: var(--bdn-primary);
  text-decoration: none;
}

a:hover {
  color: var(--bdn-primary-2);
}

h1,
h2,
h3,
h4 {
  color: #111827;
  font-family: var(--bdn-font-headline);
  line-height: 1.25;
  margin: 0;
}

h1 {
  font-size: clamp(2.1rem, 5vw, 3.7rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

p {
  margin-top: 0;
}

.bdn-container {
  margin: 0 auto;
  max-width: 1280px;
  padding: 0 1rem;
}

.bdn-site-content {
  display: block !important;
  min-height: 60vh;
  width: 100%;
}

.bdn-site-content > section {
  width: 100%;
}

.bdn-header {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--bdn-border);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.bdn-header-inner {
  align-items: center;
  display: flex;
  justify-content: space-between;
  min-height: 4.2rem;
}

.bdn-brand {
  align-items: center;
  color: #111827;
  display: inline-flex;
  gap: 0.7rem;
}

.bdn-brand:hover {
  color: #111827;
}

.bdn-brand-icon {
  align-items: center;
  background: linear-gradient(135deg, var(--bdn-primary), var(--bdn-primary-2));
  border-radius: 10px;
  color: #fff;
  display: inline-flex;
  font-size: 0.8rem;
  font-weight: 700;
  height: 2rem;
  justify-content: center;
  width: 2rem;
}

.bdn-brand-text {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.bdn-brand-name {
  font-family: var(--bdn-font-headline);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.bdn-brand-tagline {
  color: var(--bdn-muted-text);
  font-size: 0.72rem;
  line-height: 1.2;
}

.bdn-main-nav ul,
.bdn-mobile-nav ul {
  display: flex;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.bdn-main-nav a,
.bdn-mobile-nav a {
  border-radius: 8px;
  color: #374151;
  display: inline-block;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.45rem 0.75rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.bdn-main-nav a:hover,
.bdn-mobile-nav a:hover {
  background: #f3f4f6;
  color: #111827;
}

.bdn-mobile-toggle {
  background: transparent;
  border: 0;
  cursor: pointer;
  display: none;
  padding: 0.2rem;
}

.bdn-mobile-toggle span {
  background: #111827;
  border-radius: 10px;
  display: block;
  height: 2px;
  margin: 4px 0;
  width: 20px;
}

.bdn-mobile-nav {
  border-top: 1px solid var(--bdn-border);
  display: none;
  padding: 0.4rem 0 0.9rem;
}

.bdn-mobile-nav ul {
  flex-wrap: wrap;
}

.bdn-mobile-nav.is-open {
  display: block;
}

.bdn-hero,
.bdn-page-hero-main {
  background: linear-gradient(135deg, var(--bdn-primary), var(--bdn-primary-2), var(--bdn-primary-3));
  color: #fff;
  padding: 5.5rem 0;
}

.bdn-hero p,
.bdn-page-hero-main p {
  color: #dbeafe;
  font-size: 1.1rem;
  margin-top: 1.2rem;
  max-width: 860px;
}

.bdn-hero h1,
.bdn-page-hero-main h1 {
  color: #ffffff;
}

.bdn-page-hero-contact h1 {
  color: #111827;
}

.bdn-featured-wrap {
  margin-top: -3rem;
}

.bdn-featured {
  background: #fff;
  border: 1px solid var(--bdn-border);
  border-radius: var(--bdn-radius);
  box-shadow: var(--bdn-shadow);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  overflow: hidden;
}

.bdn-featured-image img {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.bdn-featured-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2.2rem;
}

.bdn-featured-content h2 {
  margin-top: 0.5rem;
}

.bdn-featured-content p {
  color: var(--bdn-muted-text);
  margin: 1rem 0;
}

.bdn-chip {
  background: var(--bdn-accent-bg);
  border-radius: 999px;
  color: var(--bdn-primary);
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 0.25rem 0.7rem;
  width: fit-content;
}

.bdn-link-arrow {
  color: var(--bdn-primary);
  font-weight: 700;
}

.bdn-link-arrow:hover {
  text-decoration: underline;
}

.bdn-section {
  padding: 4rem 0;
}

.bdn-section-muted {
  background: var(--bdn-bg-soft);
}

.bdn-section-head {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.2rem;
}

.bdn-category-grid,
.bdn-card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bdn-card-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bdn-category-card {
  background: #fff;
  border: 1px solid var(--bdn-border);
  border-radius: var(--bdn-radius);
  color: inherit;
  display: block;
  overflow: hidden;
  padding: 1.5rem;
  transition: box-shadow 0.2s ease;
}

.bdn-category-card:hover,
.bdn-card:hover {
  box-shadow: var(--bdn-shadow-soft);
}

.bdn-category-line {
  background: linear-gradient(90deg, var(--bdn-primary), #06b6d4);
  border-radius: 999px;
  display: block;
  height: 4px;
  margin-bottom: 1rem;
  width: 56px;
}

.bdn-category-card p {
  color: var(--bdn-muted-text);
  font-size: 0.92rem;
  margin-top: 0.5rem;
}

.bdn-card {
  background: #fff;
  border: 1px solid var(--bdn-border);
  border-radius: var(--bdn-radius);
  overflow: hidden;
}

.bdn-card-image {
  aspect-ratio: 16 / 9;
  background: #f3f4f6;
  display: block;
  overflow: hidden;
}

.bdn-card-image img {
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s ease;
  width: 100%;
}

.bdn-card:hover .bdn-card-image img {
  transform: scale(1.04);
}

.bdn-card-content {
  padding: 1.1rem;
}

.bdn-card-content h3 {
  font-size: 1.2rem;
  margin: 0.7rem 0 0.45rem;
}

.bdn-card-content p {
  color: var(--bdn-muted-text);
  font-size: 0.94rem;
  margin-bottom: 0.9rem;
}

.bdn-card-meta,
.bdn-post-meta {
  color: var(--bdn-muted-text);
  display: flex;
  font-size: 0.82rem;
  gap: 1rem;
}

.bdn-page-hero {
  background: linear-gradient(135deg, #f9fafb, #eff6ff);
  border-bottom: 1px solid var(--bdn-border);
  padding: 3.8rem 0;
}

.bdn-page-hero-soft {
  background: linear-gradient(135deg, #f9fafb, #eff6ff);
  border-bottom: 1px solid var(--bdn-border);
}

.bdn-page-hero p {
  color: #4b5563;
  font-size: 1.06rem;
  margin-top: 0.8rem;
  max-width: 860px;
}

.bdn-layout-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
}

.bdn-sidebar {
  display: grid;
  gap: 1.2rem;
  position: sticky;
  top: 6rem;
}

.bdn-sidebar-box {
  background: #fff;
  border: 1px solid var(--bdn-border);
  border-radius: var(--bdn-radius);
  padding: 1.3rem;
}

.bdn-sidebar-box h3 {
  font-size: 1.07rem;
  margin-bottom: 0.85rem;
}

.bdn-sidebar-box ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.bdn-sidebar-box li {
  border-bottom: 1px solid #f3f4f6;
  margin-bottom: 0.65rem;
  padding-bottom: 0.65rem;
}

.bdn-sidebar-box li:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.bdn-sidebar-box li a {
  color: #111827;
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
}

.bdn-sidebar-box li span {
  color: var(--bdn-muted-text);
  display: block;
  font-size: 0.76rem;
  margin-top: 0.2rem;
}

.bdn-sidebar-box-muted {
  background: var(--bdn-bg-soft);
}

.bdn-sidebar-box-muted li a {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.bdn-sidebar-box-muted li strong {
  color: var(--bdn-muted-text);
  font-size: 0.78rem;
}

.bdn-newsletter-box {
  background: linear-gradient(135deg, var(--bdn-primary), var(--bdn-primary-2));
  color: #fff;
}

.bdn-newsletter-box h3,
.bdn-newsletter-box p {
  color: #fff;
}

.bdn-newsletter-box p {
  font-size: 0.92rem;
}

.bdn-newsletter-box input,
.bdn-newsletter-box button,
.bdn-contact-form input,
.bdn-contact-form select,
.bdn-contact-form textarea {
  border: 0;
  border-radius: 9px;
  font-family: var(--bdn-font-body);
  font-size: 0.92rem;
  padding: 0.66rem 0.8rem;
  width: 100%;
}

.bdn-newsletter-box input {
  margin: 0.2rem 0 0.55rem;
}

.bdn-newsletter-box button,
.bdn-contact-form button {
  background: #fff;
  color: var(--bdn-primary);
  cursor: pointer;
  font-weight: 700;
}

.bdn-article-content {
  max-width: 100%;
}

.bdn-single-image {
  border-radius: var(--bdn-radius);
  overflow: hidden;
}

.bdn-single-image img {
  display: block;
  width: 100%;
}

.bdn-post-body {
  margin-top: 1.5rem;
}

.bdn-post-body h2,
.bdn-post-body h3,
.bdn-post-body h4 {
  margin-top: 1.5rem;
}

.bdn-post-body code,
.bdn-post-body pre {
  font-family: var(--bdn-font-code);
}

.bdn-post-body pre {
  background: #111827;
  border-radius: 10px;
  color: #e5e7eb;
  overflow-x: auto;
  padding: 1rem;
}

.bdn-breadcrumbs {
  color: var(--bdn-muted-text);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.86rem;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.bdn-breadcrumbs a {
  color: var(--bdn-muted-text);
}

.bdn-breadcrumbs a:hover {
  color: var(--bdn-primary);
}

.bdn-author-row {
  align-items: center;
  display: flex;
  gap: 0.8rem;
  margin-top: 1rem;
}

.bdn-author-row img,
.bdn-author-box img {
  border-radius: 999px;
}

.bdn-author-row div,
.bdn-author-box div {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.bdn-author-row span {
  color: var(--bdn-muted-text);
  font-size: 0.82rem;
}

.bdn-author-box {
  align-items: flex-start;
  background: var(--bdn-bg-soft);
  border: 1px solid var(--bdn-border);
  border-radius: var(--bdn-radius);
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1rem;
}

.bdn-empty {
  background: #fff;
  border: 1px solid var(--bdn-border);
  border-radius: var(--bdn-radius);
  padding: 2.2rem;
  text-align: center;
}

.bdn-narrow {
  max-width: 880px;
}

.bdn-center {
  text-align: center;
}

.bdn-stats-grid,
.bdn-value-grid,
.bdn-contact-grid {
  display: grid;
  gap: 1.3rem;
}

.bdn-stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.bdn-stats-grid div {
  text-align: center;
}

.bdn-stats-grid strong {
  color: var(--bdn-primary);
  display: block;
  font-family: var(--bdn-font-headline);
  font-size: 2rem;
}

.bdn-stats-grid span {
  color: var(--bdn-muted-text);
  display: block;
  font-weight: 600;
}

.bdn-value-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.bdn-value-grid article,
.bdn-contact-card {
  background: #fff;
  border: 1px solid var(--bdn-border);
  border-radius: var(--bdn-radius);
  padding: 1.2rem;
}

.bdn-value-grid p,
.bdn-contact-card p {
  color: var(--bdn-muted-text);
  margin-top: 0.4rem;
}

.bdn-contact-grid > div:last-child {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.bdn-contact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.bdn-contact-form {
  display: grid;
  gap: 0.9rem;
}

.bdn-contact-form label {
  color: #374151;
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
}

.bdn-contact-form input,
.bdn-contact-form select,
.bdn-contact-form textarea {
  border: 1px solid #d1d5db;
  margin-top: 0.34rem;
}

.bdn-contact-form textarea {
  resize: vertical;
}

.bdn-contact-form button {
  background: var(--bdn-primary);
  color: #fff;
}

.bdn-contact-grid .wpcf7-form p {
  margin-bottom: 0.9rem;
}

.bdn-contact-grid .wpcf7-form label {
  color: #374151;
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
}

.bdn-contact-grid .wpcf7-form-control-wrap {
  display: block;
  margin-top: 0.34rem;
}

.bdn-contact-grid .wpcf7 input[type="text"],
.bdn-contact-grid .wpcf7 input[type="email"],
.bdn-contact-grid .wpcf7 input[type="tel"],
.bdn-contact-grid .wpcf7 select,
.bdn-contact-grid .wpcf7 textarea {
  border: 1px solid #d1d5db;
  border-radius: 9px;
  font-family: var(--bdn-font-body);
  font-size: 0.92rem;
  padding: 0.66rem 0.8rem;
  width: 100%;
}

.bdn-contact-grid .wpcf7 textarea {
  resize: vertical;
}

.bdn-contact-grid .wpcf7 input[type="submit"] {
  background: var(--bdn-primary);
  border: 0;
  border-radius: 9px;
  color: #fff;
  cursor: pointer;
  font-family: var(--bdn-font-body);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0.8rem 1rem;
}

.bdn-footer {
  background: var(--bdn-bg-soft);
  border-top: 1px solid var(--bdn-border);
  margin-top: 4.5rem;
  padding-top: 2rem;
}

.bdn-footer-grid {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: 2fr 1fr 1fr;
}

.bdn-footer h3,
.bdn-footer h4 {
  margin-bottom: 0.7rem;
}

.bdn-footer p,
.bdn-footer li a {
  color: var(--bdn-muted-text);
  font-size: 0.9rem;
}

.bdn-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.bdn-footer li {
  margin-bottom: 0.4rem;
}

.bdn-footer-bottom {
  border-top: 1px solid var(--bdn-border);
  margin-top: 1.4rem;
  padding: 1rem 1rem 1.6rem;
  text-align: center;
}

@media (max-width: 1024px) {
  .bdn-card-grid,
  .bdn-category-grid,
  .bdn-card-grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bdn-layout-grid {
    grid-template-columns: 1fr;
  }

  .bdn-sidebar {
    position: static;
  }

  .bdn-main-nav {
    display: none;
  }

  .bdn-mobile-toggle {
    display: block;
  }

  .bdn-footer-grid,
  .bdn-contact-grid,
  .bdn-value-grid,
  .bdn-stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .bdn-featured {
    grid-template-columns: 1fr;
  }

  .bdn-featured-wrap {
    margin-top: -2rem;
  }

  .bdn-featured-content {
    padding: 1.3rem;
  }

  .bdn-card-grid,
  .bdn-category-grid,
  .bdn-card-grid-3,
  .bdn-footer-grid,
  .bdn-contact-grid,
  .bdn-value-grid,
  .bdn-stats-grid {
    grid-template-columns: 1fr;
  }

  .bdn-header-inner {
    min-height: 3.8rem;
  }

  .bdn-page-hero,
  .bdn-hero,
  .bdn-page-hero-main {
    padding: 3rem 0;
  }
}