.oab-article {
  max-width: 840px;
  margin: 0 auto;
  line-height: 1.7;
  color: #111827;
  overflow-x: hidden;
}

.oab-article__header {
  margin-bottom: 1.5rem;
}

.oab-article__lead {
  font-size: 1.14rem;
  line-height: 1.8;
  color: #1f2937;
}

.oab-article__summary,
.oab-article__toc {
  position: relative;
  margin: 1.4rem 0 1.8rem;
  padding: 1.2rem 1.25rem 1.1rem;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.96)),
    linear-gradient(135deg, rgba(14, 116, 144, 0.06), rgba(15, 23, 42, 0.02));
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.07);
  overflow: hidden;
}

.oab-article__summary::before,
.oab-article__toc::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #0f766e, #0f172a);
}

.oab-article__summary h2,
.oab-article__toc-label {
  margin-top: 0;
}

.oab-article__summary ul,
.oab-article__toc ul {
  margin: 0.5rem 0 0;
  padding-left: 1.15rem;
}

.oab-article__summary li + li,
.oab-article__toc li + li {
  margin-top: 0.45rem;
}

.oab-article__toc-label {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
}

.oab-article__toc a {
  color: #0f172a;
  text-decoration: none;
  font-weight: 600;
}

.oab-article__toc a:hover {
  text-decoration: underline;
}

.oab-article figure,
.oab-article__figure {
  margin: 1.5rem 0;
  overflow: hidden;
}

.oab-article figure img,
.oab-article__figure img {
  display: block;
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  object-fit: cover !important;
  border-radius: 16px;
}

.oab-article figcaption,
.oab-article__figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.88rem;
  color: #6b7280;
}

.oab-split-block {
  width: 100%;
  overflow: hidden;
}

.oab-split-block figure,
.oab-split-block .oab-article__figure {
  margin: 0;
}

.oab-split-block > div {
  min-width: 0;
}

.oab-split-block img {
  width: 100% !important;
  max-width: 100% !important;
  aspect-ratio: 4 / 3;
  object-fit: cover !important;
}

@media (max-width: 768px) {
  .oab-article__lead {
    font-size: 1.05rem;
  }

  .oab-split-block {
    gap: 1rem !important;
  }

  .oab-split-block > div {
    min-width: 100% !important;
  }
}