/* English overview /en — green / white / black */
.en-intro {
  --en-green: #28a745;
  --en-green-dark: #1e7e34;
  --en-ink: #111111;
  --en-muted: #4a4a4a;
  --en-line: #e5e5e5;
  --en-soft: #f4faf6;
  max-width: 960px;
  margin: 0 auto 3rem;
  padding: 0 0.25rem;
}

.en-intro-hero {
  padding: 1.5rem 0 1.75rem;
  border-bottom: 1px solid var(--en-line);
}

.en-intro-brand {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--en-green);
  margin: 0 0 0.75rem;
}

.en-intro-title {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--en-ink);
  margin: 0 0 1rem;
}

.en-intro-lead {
  font-size: 1.1rem;
  line-height: 1.55;
  color: var(--en-muted);
  margin: 0 0 1rem;
}

.en-intro-note {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--en-ink);
  background: var(--en-soft);
  border-left: 3px solid var(--en-green);
  padding: 0.75rem 1rem;
  margin: 0 0 1.5rem;
}

.en-intro-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.en-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none !important;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.3;
}

a.en-btn-primary,
a.en-btn-primary:link,
a.en-btn-primary:visited,
a.en-btn-primary:hover,
a.en-btn-primary:focus,
a.en-btn-primary:active {
  background: var(--en-green) !important;
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  border-color: var(--en-green);
}

a.en-btn-primary:hover {
  background: var(--en-green-dark) !important;
  border-color: var(--en-green-dark);
}

a.en-btn-outline,
a.en-btn-outline:link,
a.en-btn-outline:visited,
button.en-btn-outline {
  background: #ffffff;
  color: var(--en-green) !important;
  -webkit-text-fill-color: var(--en-green) !important;
  border-color: var(--en-green);
}

a.en-btn-outline:hover,
button.en-btn-outline:hover {
  background: var(--en-soft);
}

a.en-btn-ghost,
a.en-btn-ghost:link,
a.en-btn-ghost:visited {
  background: transparent;
  color: var(--en-ink) !important;
  -webkit-text-fill-color: var(--en-ink) !important;
  border-color: var(--en-line);
}

a.en-btn-ghost:hover {
  border-color: var(--en-ink);
}

.en-intro-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  padding: 1rem 0 0.25rem;
  border-bottom: 1px solid var(--en-line);
  margin-bottom: 0.5rem;
}

.en-intro-toc a,
.en-intro-toc a:link,
.en-intro-toc a:visited {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--en-green) !important;
  -webkit-text-fill-color: var(--en-green) !important;
  text-decoration: none !important;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--en-line);
  border-radius: 4px;
  background: #fff;
}

.en-intro-toc a:hover {
  border-color: var(--en-green);
  background: var(--en-soft);
}

.en-intro-section {
  padding: 1.75rem 0 0.25rem;
  scroll-margin-top: 96px;
}

.en-intro-h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--en-ink);
  margin: 0 0 0.35rem;
}

.en-intro-sec-lead {
  color: var(--en-muted);
  font-size: 0.95rem;
  margin: 0 0 1rem;
  line-height: 1.45;
}

.en-feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.75rem;
}

a.en-feat-card,
a.en-feat-card:link,
a.en-feat-card:visited {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--en-line);
  border-radius: 8px;
  background: #fff;
  text-decoration: none !important;
  color: inherit !important;
  -webkit-text-fill-color: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}

a.en-feat-card:hover,
a.en-feat-card:focus {
  border-color: var(--en-green);
  background: var(--en-soft);
  color: inherit !important;
}

.en-feat-title {
  display: block;
  font-weight: 700;
  color: var(--en-ink) !important;
  -webkit-text-fill-color: var(--en-ink) !important;
  margin-bottom: 0.3rem;
  font-size: 0.98rem;
  line-height: 1.3;
}

.en-feat-desc {
  display: block;
  color: var(--en-muted) !important;
  -webkit-text-fill-color: var(--en-muted) !important;
  font-size: 0.88rem;
  line-height: 1.45;
}

.en-intro-share-lead {
  color: var(--en-muted);
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
}

.en-intro-share-block {
  padding-bottom: 2.5rem;
  margin-top: 1rem;
  border-top: 1px solid var(--en-line);
  padding-top: 1.5rem;
}

@media (max-width: 576px) {
  .en-feat-grid {
    grid-template-columns: 1fr;
  }
}