.main-nav .is-active {
  color: #f8fafc;
}

.blog-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 28px;
  align-items: stretch;
  padding-top: 150px;
}

.blog-title {
  max-width: 980px;
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(2.5rem, 6vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.075em;
  background: linear-gradient(135deg, #f8fafc 0%, #dbeafe 50%, #38bdf8 100%);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.blog-lead {
  max-width: 780px;
  margin-top: 24px;
  color: #94a3b8;
  font-size: 1.05rem;
  line-height: 1.8;
}

.blog-index-panel,
.sidebar-card,
.post-card,
.article-shell,
.article-toc,
.article-content {
  border: 1px solid rgba(148, 163, 184, 0.16);
  background:
    linear-gradient(145deg, rgba(15, 23, 42, 0.88), rgba(2, 6, 23, 0.82)),
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.08), transparent 18rem);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
}

.blog-index-panel {
  align-self: start;
  padding: 24px;
  border-radius: 24px;
}

.blog-index-panel span,
.sidebar-card span,
.post-meta span,
.article-meta span {
  color: #93c5fd;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.blog-index-panel strong {
  display: block;
  margin-top: 12px;
  color: #f8fafc;
  font-size: 1.35rem;
  line-height: 1.25;
}

.blog-index-panel p,
.sidebar-card p,
.post-card p {
  color: #94a3b8;
  line-height: 1.7;
}

.blog-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.blog-sidebar {
  position: sticky;
  top: 110px;
  display: grid;
  gap: 16px;
}

.sidebar-card {
  display: grid;
  gap: 12px;
  padding: 20px;
  border-radius: 22px;
}

.sidebar-card a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 180ms ease, transform 180ms ease;
}

.sidebar-card a:hover {
  color: #38bdf8;
  transform: translateX(4px);
}

.muted-card {
  background: rgba(15, 23, 42, 0.58);
}

.post-list {
  display: grid;
  gap: 22px;
}

.post-card {
  padding: 28px;
  border-radius: 28px;
}

.post-meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  color: #64748b;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}

.post-card h2 {
  margin: 18px 0 12px;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.post-card h2 a {
  color: #f8fafc;
  text-decoration: none;
}

.post-card h2 a:hover {
  color: #bae6fd;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 28px;
  align-items: start;
  padding-top: 140px;
}

.article-shell {
  padding: clamp(26px, 5vw, 54px);
  border-radius: 32px;
}

.article-shell h1 {
  max-width: 980px;
  margin: 18px 0 18px;
  font-family: "Sora", sans-serif;
  font-size: clamp(2.2rem, 5vw, 4.9rem);
  line-height: 1;
  letter-spacing: -0.075em;
  color: #f8fafc;
}

.article-summary {
  max-width: 860px;
  color: #94a3b8;
  font-size: 1.08rem;
  line-height: 1.8;
}

.article-content {
  margin-top: 32px;
  padding: clamp(20px, 3vw, 34px);
  border-radius: 26px;
  background: rgba(2, 6, 23, 0.46);
}

.article-content h2 {
  margin: 34px 0 12px;
  color: #f8fafc;
  font-size: 1.55rem;
  letter-spacing: -0.03em;
}

.article-content h2:first-child {
  margin-top: 0;
}

.article-content p,
.article-content li {
  color: #cbd5e1;
  line-height: 1.85;
}

.article-content ul,
.article-content ol {
  padding-left: 22px;
}

.article-content code,
.article-code {
  font-family: "JetBrains Mono", monospace;
}

.article-code {
  overflow-x: auto;
  padding: 18px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 18px;
  background: #020617;
  color: #dbeafe;
  font-size: 0.88rem;
  line-height: 1.7;
}

.article-toc {
  position: sticky;
  top: 110px;
  display: grid;
  gap: 12px;
  padding: 20px;
  border-radius: 22px;
}

.article-toc a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.92rem;
}

.article-toc a:hover {
  color: #38bdf8;
}

.article-footer-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
}

@media (max-width: 920px) {
  .blog-hero,
  .blog-layout,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .blog-sidebar,
  .article-toc {
    position: static;
  }
}