/* ===== Base Section ===== */
.section {
  border: 1px solid var(--c-border-light);
}

.section-heading {
  position: relative;
  padding: 18px 24px;
}

.section-body {
  padding: 0 24px 24px;
}
.section-body.news-overview {
  padding: var(--spacing-lg) 24px var(--spacing-xl);
}

/* ===== News Overview (3-column) ===== */
.news-overview {
  display: grid;
  grid-template-columns: 1fr 1fr 300px;
  gap: var(--spacing-xl);
  padding: var(--spacing-lg) 24px var(--spacing-xl);
}
.news-overview-col {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
}
.section-col-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--c-text);
  padding-left: 14px;
  position: relative;
  margin: 0 0 var(--spacing-sm);
  line-height: 1.4;
}
.section-col-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--c-primary);
  border-radius: 2px;
}

.news-overview-list {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.news-overview-headline {
  flex-shrink: 0;
}
.news-overview-headline a {
  display: flex;
  align-items: center;
  min-height: 36px;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.2;
  padding: 0 4px 0 14px;
  border-left: 2px solid var(--c-primary);
  border-radius: var(--radius-sm);
  transition: color .2s, background .15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-overview-headline a:hover {
  color: var(--c-primary);
  background: var(--c-surface);
}

.news-overview-item {
  position: relative;
  display: flex;
  align-items: stretch;
  gap: 8px;
  flex: 1;
  min-height: 32px;
}
.news-overview-item a {
  display: flex;
  align-items: center;
  align-self: stretch;
  flex: 1;
  min-width: 0;
  font-size: var(--text-sm);
  color: var(--c-text);
  font-weight: 500;
  line-height: 1.2;
  padding: 0 4px 0 14px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: border-color .2s, color .2s, background .15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-overview-item a:hover {
  color: var(--c-primary);
  border-left-color: var(--c-primary);
  background: var(--c-surface);
}

.news-overview-item-withdate {
  display: flex;
  align-items: center;
}
.news-overview-item-withdate a {
  flex: 1;
  min-width: 0;
}
.news-overview-date {
  flex-shrink: 0;
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  background: var(--c-surface);
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid var(--c-border-light);
  line-height: 1.6;
  margin-right: 4px;
}

.nov-meta {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  white-space: nowrap;
}

.nov-time {
  flex-shrink: 0;
  margin-left: auto;
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  color: var(--c-text-muted);
  line-height: 1.5;
  white-space: nowrap;
}

.nov-views {
  flex-shrink: 0;
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-style: normal;
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--c-text-muted);
  white-space: nowrap;
}
.nov-views .iconfont {
  font-size: 13px;
  color: var(--c-text-muted);
}

.nov-badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  margin-right: 6px;
  vertical-align: middle;
  color: #fff;
}
.nov-badge-news   { background: #2563eb; }
.nov-badge-command{ background: #0d9488; }
.nov-badge-course { background: #9333ea; }
.nov-badge-soft   { background: #ea580c; }
.nov-badge-distro { background: #16a34a; }
.nov-badge-game   { background: #e11d48; }
.nov-badge-book   { background: #f59e0b; }

/* ===== News image column (推荐资讯) ===== */
.news-overview-imgcol {
  display: flex;
  flex-direction: column;
}
.news-imgcol-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  flex: 1;
  min-height: 0;
}
.news-imgcol-item {
  flex: 1;
  min-height: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--c-border-light);
  background: var(--c-bg);
  text-decoration: none;
  transition: border-color .2s, transform .15s, box-shadow .2s;
}
.news-imgcol-item:hover {
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.news-imgcol-img {
  flex: 1;
  min-height: 0;
  display: block;
}
.news-imgcol-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.news-imgcol-title {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 24px 10px 9px;
  font-size: var(--text-sm);
  color: #fff;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  background: linear-gradient(to top, rgba(0, 0, 0, .8), rgba(0, 0, 0, .4) 55%, transparent);
}
.news-imgcol-item:hover .news-imgcol-title {
  color: #fff;
}
.news-imgcol-item:hover .news-imgcol-img img {
  transform: scale(1.03);
}
.news-imgcol-img img {
  transition: transform .3s ease;
}

/* ===== Featured News ===== */
.featured-news-grid {
  display: grid;
  grid-template-columns: 560px 1fr;
  gap: var(--spacing-md);
}
.featured-main {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.featured-main a {
  display: block;
  position: relative;
}
.featured-main img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform .4s ease;
}
.featured-main:hover img { transform: scale(1.05); }
.featured-main-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 50px 20px 16px;
  background: linear-gradient(transparent 30%, rgba(0,0,0,.8));
  color: #fff;
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}
.featured-side-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: block;
}
.featured-side-item img {
  width: 100%;
  height: 142px;
  object-fit: cover;
  transition: transform .4s ease;
}
.featured-side-item:hover img { transform: scale(1.05); }
.featured-side-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px 10px 8px;
  background: linear-gradient(transparent 20%, rgba(0,0,0,.75));
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Featured Carousel ===== */
.featured-carousel {
  overflow: hidden;
}
.carousel-track {
  display: flex;
  transition: transform .5s ease;
}
.carousel-slide {
  min-width: 100%;
}
.carousel-slide a {
  display: block;
  position: relative;
}
.carousel-slide img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
}
.carousel-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}
.carousel-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  cursor: pointer;
  transition: background .3s, transform .2s;
}
.carousel-dots span.active {
  background: #fff;
  transform: scale(1.2);
}
.carousel-dots span:hover {
  background: rgba(255,255,255,.8);
}

/* ===== Tab Links ===== */
.tab-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: var(--spacing-lg);
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.tab-links::-webkit-scrollbar { display: none; }
.tab-links a {
  font-size: var(--text-xs);
  color: var(--c-text-secondary);
  white-space: nowrap;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--c-border-light);
  transition: background .2s, color .2s, border-color .2s;
  font-weight: 500;
}
.tab-links a:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

/* ===== Section with Sidebar ===== */
.section-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: var(--spacing-xl);
  align-items: start;
}

.section-main {
  min-width: 0;
}

.section-main .section-heading {
  padding: 18px 0px;
}

.section-main .section-heading .more {
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}

/* ===== Icon Grid ===== */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: var(--spacing-sm);
}
.icon-grid-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 8px 12px;
  border-radius: var(--radius-md);
  text-decoration: none;
  background: var(--c-bg);
  border: 1px solid var(--c-border-light);
  transition: transform .2s, box-shadow .2s, border-color .2s;
  min-height: 100px;
  min-width: 0;
}
.icon-grid-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-primary);
  background: var(--c-surface);
}
.icon-grid-item img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: 8px;
}
.icon-grid-item-game img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 10px;
}
.icon-grid-item-book img {
  width: 64px;
  max-height: 84px;
  object-fit: contain;
  border-radius: 6px;
}
.icon-grid-name {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.4;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  max-width: 100%;
  text-align: center;
  transition: color .2s;
}
.icon-grid-item:hover .icon-grid-name { color: var(--c-primary); }

/* ===== Sidebar ===== */
.section-sidebar {
  min-width: 0;
}
.sidebar-title {
  padding: 18px 0 var(--spacing-md);
}
.sidebar-title h2 {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--c-text);
  position: relative;
  padding-left: 14px;
}
.sidebar-title h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 5px;
  background: var(--c-primary);
  border-radius: 3px;
}

.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}
.sidebar-list li {
  list-style: none;
}
.sidebar-list li a {
  display: flex;
  gap: 10px;
  align-items: center;
  text-decoration: none;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  transition: background .15s;
}
.sidebar-list li a:hover { background: var(--c-primary-light); }
.sidebar-list li a img {
  width: 70px;
  height: 50px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
  border: 1px solid var(--c-border-light);
}
.sidebar-list li a img[src=""],
.sidebar-list li a img:not([src]) {
  display: none;
}
.sidebar-list li a span {
  font-size: var(--text-sm);
  color: var(--c-text-secondary);
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.sidebar-list li a:hover span { color: var(--c-primary); }

/* Thumbnail rows: fixed two-line text block, aligned with sidebar title */
.sidebar-list li:has(img) a {
  padding: 6px 14px;
}
.sidebar-list li:has(img) a span {
  min-height: 36px;
  align-self: center;
}

.sidebar-list-text li a {
  padding: 8px 10px 8px 14px;
  position: relative;
  gap: 0;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: border-color .2s, background .15s;
}
.sidebar-list-text li a::before {
  display: none;
}
.sidebar-list-text li a:hover {
  background: var(--c-primary-light);
  border-left-color: var(--c-primary);
}
.sidebar-list-text li a span {
  -webkit-line-clamp: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  transition: color .15s;
}
.sidebar-list-text li a:hover span {
  color: var(--c-primary);
}

/* ===== Commands ===== */
.commands-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}
.commands-item {
  background: var(--c-code-bg);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  position: relative;
  border: 1px solid rgba(255,255,255,.06);
}
.commands-item-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-secondary);
  display: block;
  margin-bottom: 8px;
  text-decoration: none;
  transition: color .15s;
}
.commands-item-title:hover {
  color: var(--c-secondary-hover);
  text-decoration: underline;
}
.commands-item-code {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--c-code-text);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
  opacity: .85;
}
.commands-item-code::before {
  content: '$ ';
  color: var(--c-secondary);
  font-weight: 700;
  user-select: none;
  opacity: 1;
}

/* ===== Sites ===== */
.sites-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}
.sites-item {
  font-size: var(--text-sm);
  color: var(--c-text-secondary);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border-light);
  background: var(--c-bg);
  transition: background .2s, color .2s, border-color .2s, transform .15s;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-weight: 500;
}
.sites-item:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
  border-color: var(--c-primary);
  transform: translateY(-2px);
}

/* ===== Home Stats Dashboard ===== */
.home-stats {
  display: flex;
  align-items: stretch;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.home-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 86px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  background: var(--c-bg);
  border: 1px solid var(--c-border-light);
  text-decoration: none;
  transition: border-color .2s, transform .15s, background .2s;
}
.home-stat:hover {
  border-color: var(--c-primary);
  transform: translateY(-2px);
  background: var(--c-primary-light);
}
.home-stat strong {
  font-size: 1.429rem;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1.2;
}
.home-stat span {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  margin-top: 2px;
}
.home-stat-actions {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-xs);
  margin-left: auto;
}
.home-stat-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-text-secondary);
  background: var(--c-bg);
  border: 1px solid var(--c-border-light);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s, color .2s, background .2s;
}
.home-stat-action i {
  font-size: 1.071rem;
  color: var(--c-primary);
}
.home-stat-action:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
  background: var(--c-primary-light);
}

/* ===== Course placeholder tile ===== */
.course-tile {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  font-size: 1.429rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--c-primary), #7c3aed);
  user-select: none;
}

/* ===== Distro "新版" badge ===== */
.ig-fresh {
  display: inline-block;
  margin-left: 4px;
  font-style: normal;
  font-size: var(--text-xs);
  font-weight: 700;
  line-height: 1;
  padding: 2px 5px;
  border-radius: 4px;
  color: #fff;
  background: #16a34a;
  vertical-align: 1px;
}

/* ===== Tag cloud ===== */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}
.tags-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: var(--text-sm);
  color: var(--c-text-secondary);
  background: var(--c-bg);
  border: 1px solid var(--c-border-light);
  border-radius: 20px;
  text-decoration: none;
  transition: border-color .2s, color .2s, background .2s;
}
.tags-item small {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
}
.tags-item:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
  background: var(--c-primary-light);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .news-overview {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }
  .news-overview-col:last-child {
    grid-column: 1 / -1;
  }
  .news-imgcol-list {
    flex-direction: row;
    height: auto;
  }
  .news-imgcol-item {
    min-height: 140px;
  }
  .news-imgcol-img {
    flex: 1;
  }
  .featured-news-grid {
    grid-template-columns: 1fr;
  }
  .featured-main img {
    height: 240px;
  }
  .carousel-slide img {
    height: 240px;
  }
  .featured-side {
    grid-template-columns: repeat(4, 1fr);
  }
  .featured-side-item img {
    height: 112px;
  }
  .section-with-sidebar {
    grid-template-columns: 1fr;
  }
  .sites-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .commands-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .section-body.news-overview {
    padding: var(--spacing-md) 16px var(--spacing-lg);
  }
  .news-overview {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .news-overview-col:last-child {
    grid-column: auto;
  }
  .news-imgcol-list {
    flex-direction: column;
    height: auto;
  }
  .news-imgcol-item {
    min-height: 0;
  }
  .news-imgcol-img {
    flex: none;
    height: 150px;
  }
  .featured-main img {
    height: 200px;
  }
  .carousel-slide img {
    height: 200px;
  }
  .featured-side {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-side-item img {
    height: 92px;
  }
  .icon-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }
  .icon-grid-item {
    min-height: 80px;
    padding: 10px 6px 8px;
  }
  .icon-grid-item img {
    width: 44px;
    height: 44px;
  }
  .icon-grid-item-game img {
    width: 60px;
    height: 60px;
  }
  .icon-grid-item-book img {
    width: 48px;
    max-height: 64px;
  }
  .sites-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .home-stats {
    flex-wrap: wrap;
    padding: var(--spacing-md);
    gap: var(--spacing-xs);
  }
  .home-stat {
    flex: 1 1 calc(33.33% - 8px);
    min-width: 0;
    padding: 8px 6px;
  }
  .home-stat-actions {
    flex-basis: 100%;
    justify-content: flex-start;
    margin-left: 0;
  }
  .section-with-sidebar {
    gap: var(--spacing-lg);
  }
  .section-sidebar {
    display: none;
  }
  .section-heading {
    padding: 14px 16px;
  }
  .section-body {
    padding: 0 16px 18px;
  }
}