/* HOME LAYOUT */
.home-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
}
@media (min-width: 768px)  { .home-layout { grid-template-columns: 1fr 240px; } }
@media (min-width: 1024px) { .home-layout { grid-template-columns: 1fr 280px; } }
@media (min-width: 1280px) { .home-layout { grid-template-columns: 1fr 300px; } }
@media (min-width: 1400px) { .home-layout { grid-template-columns: 1fr 320px; } }

.home-sidebar { display: flex; flex-direction: column; gap: 16px; }
@media (min-width: 768px) {
  .home-sidebar { position: sticky; top: calc(var(--navbar-height) + 16px); }
}

/* SECTION HEADER */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.section-title {
  font-size: 20px; font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
  display: flex; align-items: center; gap: 8px;
}
.section-title-bar {
  display: inline-block;
  width: 4px; height: 20px;
  border-radius: 2px;
  flex-shrink: 0;
  background: linear-gradient(to bottom, var(--accent), var(--accent-light));
}
.section-more {
  font-size: 14px; font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.section-more:hover { opacity: 0.7; }

/* ARTICLE CARDS (首页列表) */
.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px)  { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1280px) { .article-grid { grid-template-columns: repeat(3, 1fr); } }

.article-card {
  display: flex; flex-direction: column;
  border-radius: 22px; overflow: hidden;
  background: var(--surface-1-bg);
  border: 1px solid var(--surface-border);
  box-shadow: var(--surface-shadow-2);
  transition: transform 0.3s, box-shadow 0.3s;
  text-decoration: none; color: inherit;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--surface-shadow-1);
}
.article-card-cover {
  position: relative; overflow: hidden;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #f0f0f0, #e0e0e0);
  flex-shrink: 0;
}
.article-card-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.article-card:hover .article-card-cover img { transform: scale(1.05); }
.article-card-cover-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
}
.article-card-body {
  display: flex; flex-direction: column; flex: 1;
  padding: 20px; gap: 12px;
}
.article-card-badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badge-category {
  padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 600;
  background: var(--accent-tint); color: var(--accent);
}
.badge-tag {
  padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 500;
  background: rgba(0,122,255,0.10); color: #0A7AFF;
}
.badge-pinned {
  padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 600;
  background: rgba(255,59,48,0.12); color: #FF3B30;
}
.badge-gray {
  padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 500;
  background: var(--surface-3-bg); color: var(--text-secondary);
}
.badge-blue {
  padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 500;
  background: var(--blue-tint); color: var(--blue);
}
.badge-green {
  padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 500;
  background: rgba(52,199,89,0.12); color: var(--green);
}
.article-card-title {
  font-size: 16px; font-weight: 700;
  line-height: 1.45; letter-spacing: -0.2px;
  color: var(--text-primary);
  display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
  margin: 0;
}
.article-card:hover .article-card-title { color: var(--accent); }
.article-card-summary {
  font-size: 13px; line-height: 1.6;
  color: var(--text-secondary);
  display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  min-height: 41px;
}

@media (max-width: 640px) {
  .article-card-title {
    -webkit-line-clamp: 2;
    line-clamp: 2;
    font-size: 15px;
  }
  .article-card-summary {
    display: none;
    min-height: 0;
  }
  .article-card-body {
    padding: 14px 16px;
    gap: 8px;
  }
}
.article-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 12px; margin-top: auto;
  border-top: 1px solid var(--surface-border);
}
.article-card-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-tertiary); }
.article-card-read, .read-more-btn {
  font-size: 13px; font-weight: 600;
  color: var(--accent);
  transition: color 0.2s, transform 0.2s;
  display: flex; align-items: center; gap: 4px;
}
.article-card:hover .article-card-read { color: var(--accent) !important; transform: translateX(4px); }

/* HOME CAROUSEL */
.home-carousel {
  position: relative; overflow: hidden;
  height: 380px; margin-bottom: 0;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--surface-shadow-1);
}
@media (max-width: 768px) { .home-carousel { height: 280px; } }
@media (min-width: 1280px) { .home-carousel { height: 440px; } }
.carousel-track { position: relative; width: 100%; height: 100%; }
.carousel-slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transition: opacity 0.6s ease;
}
.carousel-slide.active { opacity: 1; }
.carousel-full-link {
  display: block; width: 100%; height: 100%;
  position: relative; text-decoration: none; color: inherit;
  z-index: 1;
}
.carousel-overlay { position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(0,0,0,0.1), rgba(0,0,0,0.7)); }
.carousel-content { position: absolute; bottom: 0; left: 0; right: 0; padding: 32px 40px; color: #fff; pointer-events: none; }
@media (max-width: 768px) { .carousel-content { padding: 40px 24px 20px; } }
.carousel-title {
  display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 26px; font-weight: 800;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
  color: #fff; text-decoration: none; margin-bottom: 8px;
  line-height: 1.3;
  transition: opacity 0.2s;
}
@media (max-width: 768px) { .carousel-title { font-size: 19px; -webkit-line-clamp: 2; line-clamp: 2; } }
.carousel-full-link:hover .carousel-title { opacity: 0.85; }
.carousel-subtitle {
  font-size: 15px; opacity: 0.85; margin-bottom: 12px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
  display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (max-width: 768px) {
  .carousel-subtitle {
    font-size: 13px;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    margin-bottom: 10px;
  }
}
.carousel-btn {
  display: inline-block; padding: 8px 20px;
  background: rgba(255,255,255,0.2); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 999px; color: #fff; text-decoration: none;
  font-size: 14px; font-weight: 600; transition: background 0.2s;
}
.carousel-full-link:hover .carousel-btn { background: rgba(255,255,255,0.35); }
.carousel-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 42px; height: 42px; border-radius: 50%;
  background: rgba(0,0,0,0.35); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff; font-size: 22px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s; z-index: 2;
}
.carousel-prev { left: 16px; }
.carousel-next { right: 16px; }
.carousel-arrow:hover { background: rgba(0,0,0,0.55); }
.carousel-dots { position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%); display: flex; gap: 6px; z-index: 2; }
.carousel-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.5); cursor: pointer; transition: all 0.2s; }
.carousel-dot.active { background: #fff; transform: scale(1.3); }