.top-nav {
  background-color: var(--color-primary);
  height: 60px;
  position: relative;
  z-index: var(--z-fixed);
}

.top-nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.top-nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text--inverse);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.top-nav__logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #0066cc, #0099ff);
  border-radius: var(--radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
}

.top-nav__menu {
  display: none;
}

@media (min-width: 992px) {
  .top-nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
  }
}

.top-nav__link {
  color: var(--color-text--inverse);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-base);
}

.top-nav__link:hover {
  color: var(--color-accent--light);
}

.top-nav__link--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
}

.top-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.top-nav__action-link {
  color: var(--color-text--inverse);
  font-size: var(--font-size-sm);
  opacity: 0.9;
  transition: opacity var(--transition-base);
}

.top-nav__action-link:hover {
  opacity: 1;
  color: var(--color-text--inverse);
}


.top-nav__menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

@media (min-width: 992px) {
  .top-nav__menu-btn {
    display: none;
  }
}

.top-nav__menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text--inverse);
  transition: transform var(--transition-base), opacity var(--transition-base);
}


.mobile-menu {
  display: none;
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  background-color: var(--color-primary--light);
  padding: var(--space-4);
  z-index: var(--z-dropdown);
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-menu__link {
  color: var(--color-text--inverse);
  font-size: var(--font-size-base);
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu__link:hover {
  color: var(--color-accent--light);
}


.news-flash {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.news-flash__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-accent);
}

.news-flash__icon {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.news-flash__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
}

.news-flash__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.news-flash__item {
  display: flex;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px dashed var(--color-border);
}

.news-flash__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.news-flash__time {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text--muted);
  font-family: monospace;
}

.news-flash__text {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  transition: color var(--transition-base);
}

.news-flash__text:hover {
  color: var(--color-accent);
}

.news-flash__more {
  display: block;
  width: 100%;
  padding: var(--space-3);
  margin-top: var(--space-4);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text--secondary);
  background-color: var(--color-bg--light);
  border: none;
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.news-flash__more:hover {
  background-color: var(--color-border);
  color: var(--color-text);
}


.sidebar-module {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sidebar-module__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg--light);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-module__title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.sidebar-module__title--accent {
  color: var(--color-accent);
}

.sidebar-module__toggle {
  width: 20px;
  height: 20px;
  color: var(--color-text--muted);
  cursor: pointer;
  transition: transform var(--transition-base);
}

.sidebar-module__toggle.is-collapsed {
  transform: rotate(-90deg);
}

.sidebar-module__content {
  padding: var(--space-4);
}

.sidebar-module__content.is-collapsed {
  display: none;
}


.sidebar-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.sidebar-item:first-child {
  padding-top: 0;
}

.sidebar-item__image {
  flex-shrink: 0;
  width: 80px;
  height: 60px;
  border-radius: var(--radius-base);
  overflow: hidden;
}

.sidebar-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-item__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sidebar-item__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  transition: color var(--transition-base);
}

.sidebar-item:hover .sidebar-item__title {
  color: var(--color-accent);
}

.sidebar-item__meta {
  font-size: var(--font-size-xs);
  color: var(--color-text--muted);
}


.sidebar-item--text {
  padding: var(--space-2) 0;
}

.sidebar-item--text .sidebar-item__title {
  font-size: var(--font-size-sm);
}


.focus-list {
  display: flex;
  flex-direction: column;
    padding: var(--space-4);
}

.focus-item {
  padding: var(--space-3) 0;
}

.focus-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.focus-item:first-child {
  padding-top: 0;
}

.focus-item__link {
  display: block;
}

.focus-item__image {
  position: relative;
  width: 100%;
  border-radius: var(--radius-base);
  overflow: hidden;
  aspect-ratio: 10/7;
  margin-bottom: var(--space-2);
}

.focus-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.focus-item__link:hover .focus-item__image img {
  transform: scale(1.05);
}

.focus-item__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.focus-item__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  transition: color var(--transition-base);
}

.focus-item__link:hover .focus-item__title {
  color: var(--color-accent);
}

.focus-item__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.focus-item__tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  background-color: rgba(255, 102, 0, 0.1);
  border-radius: var(--radius-sm);
}

.focus-item__time {
  font-size: var(--font-size-xs);
  color: var(--color-text--muted);
}


.ranking-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.ranking-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.ranking-item__num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text--inverse);
  background-color: var(--color-text--muted);
  border-radius: var(--radius-sm);
}

.ranking-item__num--top1 {
  background: linear-gradient(135deg, #ffd700, #ffaa00);
}

.ranking-item__num--top2 {
  background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
}

.ranking-item__num--top3 {
  background: linear-gradient(135deg, #cd7f32, #b87333);
}

.ranking-item__title {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  transition: color var(--transition-base);
}

.ranking-item:hover .ranking-item__title {
  color: var(--color-accent);
}


.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text--secondary);
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb__link {
  color: var(--color-text--secondary);
  transition: color var(--transition-base);
}

.breadcrumb__link:hover {
  color: var(--color-accent);
}

.breadcrumb__separator {
  color: var(--color-text--muted);
}

.breadcrumb__current {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}


.breadcrumb-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}


.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box__input {
  width: 200px;
  padding: var(--space-2) var(--space-3);
  padding-right: 36px;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  transition: border-color var(--transition-base), width var(--transition-base);
}

@media (min-width: 768px) {
  .search-box__input {
    width: 240px;
  }
}

.search-box__input:focus {
  outline: none;
  border-color: var(--color-accent);
  width: 280px;
}

.search-box__btn {
  position: absolute;
  right: var(--space-2);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-text--muted);
  cursor: pointer;
  transition: color var(--transition-base);
}

.search-box__btn:hover {
  color: var(--color-accent);
}


.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6) 0;
}

.pagination ul {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
}

.pagination li {
  display: flex;
}

.pagination li a,
.pagination li span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background-color: var(--color-bg--light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: all var(--transition-base);
}

.pagination li a:hover {
  background-color: var(--color-border);
  border-color: var(--color-border--dark);
}

.pagination li > span {
  color: var(--color-text--inverse);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.pagination li:first-child a,
.pagination li:last-child a {
  padding: 0 var(--space-4);
}


.article-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3);
  background-color: var(--color-bg--light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.article-action:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.article-action__icon {
  width: 24px;
  height: 24px;
}

.article-action__text {
  font-size: var(--font-size-xs);
  color: var(--color-text--secondary);
}


.article-action--like {
  background-color: var(--color-blue);
  border-color: var(--color-blue);
}
.article-action--like .article-action__icon,
.article-action--like .article-action__text {
  color: var(--color-text--inverse);
}
.article-action--like:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}


.article-action--collect {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}
.article-action--collect .article-action__icon,
.article-action--collect .article-action__text {
  color: var(--color-text--inverse);
}
.article-action--collect:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}


.article-action--share {
  background-color: var(--color-green);
  border-color: var(--color-green);
}
.article-action--share .article-action__icon,
.article-action--share .article-action__text {
  color: var(--color-text--inverse);
}
.article-action--share:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}


.article-action--star {
  background-color: var(--color-yellow);
  border-color: var(--color-yellow);
}
.article-action--star .article-action__icon,
.article-action--star .article-action__text {
  color: var(--color-text);
}
.article-action--star:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}


.footer {
  background-color: var(--color-primary);
  color: var(--color-text--inverse);
  padding: var(--space-8) 0 var(--space-6);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-text--inverse);
}

.footer__copyright {
  text-align: center;
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.5);
  line-height: var(--line-height-relaxed);
}


.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text--secondary);
  background-color: var(--color-bg--light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.tag:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}


.share-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.share-bar__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  white-space: nowrap;
}

.share-bar__buttons {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.share-btn__icon {
  width: 28px;
  height: 28px;
  display: block;
  transition: transform var(--transition-base);
}


.share-btn--wechat {
  color: #07c160;
  background-color: rgba(7, 193, 96, 0.1);
}

.share-btn--wechat:hover {
  background-color: #07c160;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(7, 193, 96, 0.3);
}


.share-btn--weibo {
  color: #e6162d;
  background-color: rgba(230, 22, 45, 0.1);
}

.share-btn--weibo:hover {
  background-color: #e6162d;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(230, 22, 45, 0.3);
}


.share-btn--qq {
  color: #12b7f5;
  background-color: rgba(18, 183, 245, 0.1);
}

.share-btn--qq:hover {
  background-color: #12b7f5;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(18, 183, 245, 0.3);
}


.share-btn--douyin {
  color: #000000;
  background-color: rgba(0, 0, 0, 0.08);
}

.share-btn--douyin:hover {
  background-color: #000000;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}


.share-btn--link {
  color: #6366f1;
  background-color: rgba(99, 102, 241, 0.1);
}

.share-btn--link:hover {
  background-color: #6366f1;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.share-btn:hover .share-btn__icon {
  transform: scale(1.1);
}


@media (max-width: 575px) {
  .share-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .share-btn {
    width: 36px;
    height: 36px;
  }

  .share-btn__icon {
    width: 18px;
    height: 18px;
    display: block;
  }
}


.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 999;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text--inverse);
  transition: stroke var(--transition-base);
}


@media (max-width: 767px) {
  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 44px;
    height: 44px;
  }
  
  .back-to-top svg {
    width: 20px;
    height: 20px;
  }
}