#reading-progress {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  height: 3px;
  background: var(--brand);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 49;
  transition: transform 0.1s linear;
}

.article-hero {
  position: relative;
  background: var(--black);
  padding: calc(var(--nav-h) + 2.5rem) 1.5rem 3rem;
  overflow: hidden;
}
.article-hero__bg {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, #0d0d0d 0, #0d0d0d 1px, #141414 0, #141414 50%);
  background-size: 5px 5px;
}
.article-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.85) 100%);
}
.article-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
}
.article-hero__tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.article-hero__title {
  font-family: var(--font-black);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.75rem);
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.article-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}
.article-hero__meta-item { display: flex; align-items: center; gap: 0.4rem; color: rgba(255,255,255,0.5); font-size: 0.825rem; }
.article-hero__meta-item svg { flex-shrink: 0; }

.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  max-width: 1140px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}
@media (min-width: 1024px) {
  .article-layout { grid-template-columns: 1fr 300px; }
}

.article-body { min-width: 0; }
.article-body__intro {
  font-size: 1.1rem;
  color: var(--brand);
  line-height: 1.75;
  margin-bottom: 2.5rem;
  font-style: italic;
  border-left: 4px solid var(--brand);
  padding-left: 1.25rem;
}
.article-content h2 {
  font-family: var(--font-black);
  font-weight: 900;
  font-size: 1.35rem;
  color: var(--black);
  margin: 2.5rem 0 0.875rem;
  line-height: 1.25;
}
.article-content p {
  font-size: 1rem;
  color: #333;
  line-height: 1.8;
  margin-bottom: 1.25rem;
}
.article-content strong { color: var(--black); font-weight: 700; }
.article-content blockquote {
  background: transparent;
  border-left: 4px solid var(--brand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: #E94E32;
  font-size: 1.05rem;
}

.article-img-block {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 2rem 0;
  background: #111;
  height: 340px;
  background-image:
    repeating-linear-gradient(45deg, #111 0, #111 1px, #1a1a1a 0, #1a1a1a 50%);
  background-size: 6px 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.article-img-block span {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--gray-500);
  text-align: center;
  padding: 1rem;
}

.share-panel {
  background: var(--warm-bg);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 3rem;
}
.share-panel__title {
  font-family: var(--font-black);
  font-weight: 900;
  font-size: 0.9rem;
  color: var(--black);
  margin-bottom: 1rem;
}
.share-panel__btns { display: flex; flex-wrap: wrap; gap: 0.625rem; }
.share-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-body);
  cursor: pointer;
  border: 1.5px solid var(--gray-200);
  transition: all var(--transition);
  background: var(--white);
  color: var(--black);
}
.share-btn:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-pale); }
.share-btn--copy.copied { background: #dcfce7; border-color: #16a34a; color: #166534; }

.article-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }

.sidebar-card {
  background: var(--warm-bg);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}
.sidebar-card__title {
  font-family: var(--font-black);
  font-weight: 900;
  font-size: 0.875rem;
  color: var(--black);
  margin-bottom: 1rem;
}

.author-block { display: flex; flex-direction: column; align-items: center; text-align: center; }
.author-avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--brand);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-black);
  font-weight: 900;
  font-size: 1.25rem;
  color: var(--white);
  margin-bottom: 0.75rem;
}
.author-name { font-family: var(--font-black); font-weight: 900; font-size: 0.925rem; color: var(--black); }
.author-role { font-size: 0.78rem; color: var(--gray-400); margin-top: 2px; }

.toc-list { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.toc-list li a {
  font-size: 0.82rem;
  color: var(--gray-500);
  transition: color var(--transition);
  display: block;
  padding: 3px 0 3px 12px;
  border-left: 2px solid transparent;
}
.toc-list li a:hover { color: var(--brand); border-left-color: var(--brand); }

.related-section {
  background: var(--warm-bg);
  padding: 4rem 1.5rem;
  border-top: 1px solid var(--gray-100);
}
.related-section__inner { max-width: 1140px; margin: 0 auto; }
.related-section__title {
  font-family: var(--font-black);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--black);
  margin-bottom: 2rem;
}
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px)  { .related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }

.related-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.related-card__img {
  height: 160px;
  background: #1a1a1a;
  background-image:
    repeating-linear-gradient(45deg, #1a1a1a 0, #1a1a1a 1px, #222 0, #222 50%);
  background-size: 6px 6px;
  position: relative;
}
.related-card__img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 60%);
}
.related-card__body { padding: 1rem; flex: 1; display: flex; flex-direction: column; }
.related-card__tag { margin-bottom: 0.5rem; }
.related-card__title {
  font-family: var(--font-black);
  font-weight: 900;
  font-size: 0.875rem;
  color: var(--black);
  line-height: 1.3;
  flex: 1;
}