/* Layout: sayfa bölgeleri (l- öneki) */
.l-container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.l-narrow { max-width: 800px; }

.l-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.l-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.l-main { display: block; }
.l-main:focus { outline: none; }

.l-hero {
  background: linear-gradient(135deg, var(--color-gray-900) 0%, #164e63 60%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: 88px 0;
}

.l-hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.l-section { padding: 72px 0; }
.l-section--alt { background: var(--color-gray-100); }
.l-section--tall { padding: 120px 0; }

.l-page-header {
  background: var(--color-gray-900);
  color: var(--color-white);
  padding: 48px 0;
}

.l-page-header--visual {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 88px 0;
  min-height: 300px;
  display: flex;
  align-items: flex-end;
}

.l-page-header-inner { position: relative; z-index: 2; width: 100%; }

.l-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.l-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.l-contact {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 28px;
  align-items: start;
}

.l-footer {
  background: var(--color-gray-900);
  color: var(--color-gray-200);
  padding: 56px 0 0;
}

.l-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.l-footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: 20px;
  padding-bottom: 20px;
  font-size: 0.85rem;
  color: var(--color-gray-500);
}

@media (max-width: 900px) {
  .l-hero-inner { grid-template-columns: 1fr; text-align: center; }
  .l-features { grid-template-columns: 1fr; }
  .l-two-col, .l-contact { grid-template-columns: 1fr; }
  .l-footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .l-hero { padding: 56px 0; }
  .l-section { padding: 48px 0; }
  .l-page-header--visual { padding: 64px 0; min-height: 240px; }
}

@media (max-width: 640px) {
  .l-container { padding: 0 16px; }
}

/* Blog bölgeleri */
.l-article { max-width: 800px; display: grid; gap: 40px; }
.l-article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.l-related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.l-split-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

@media (max-width: 900px) {
  .l-article-grid { grid-template-columns: 1fr 1fr; }
  .l-related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .l-article-grid, .l-related-grid { grid-template-columns: 1fr; }
}