.header {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg-primary);
  font-size: var(--font-size-3xl);
}

.header__nav {
  display: none;
}

@media (min-width: 992px) {
  .header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
  }
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.header__nav-link:hover {
  color: var(--color-primary);
}

.header__nav-link--active {
  color: var(--color-primary);
}

.header__nav-link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: var(--border-radius-full);
}

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

.header__search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-full);
  cursor: pointer;
}

.header__search-input {
  border: none;
  background: none;
  outline: none;
  width: 120px;
  font-size: var(--font-size-sm);
}

.header__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xl);
}

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

/* ----------------------------------------
   轮播图组件
   ---------------------------------------- */

.carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  background-color: var(--color-bg-tertiary);
}

.carousel__track {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.carousel__slide {
  flex: 0 0 100%;
  min-width: 100%;
  position: relative;
}

.carousel__image-container {
  width: 100%;
  padding-top: 56.25%; /* 16:9 比例 */
  overflow: hidden;
  position: relative;
}

.carousel__image-container a {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.carousel__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-8) var(--space-6) var(--space-6);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
  color: var(--color-bg-primary);
  z-index: 1;
}

.carousel__category {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-accent);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-3);
}

.carousel__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-bg-primary);
  margin-bottom: var(--space-2);
}

.carousel__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

.carousel__controls {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-4);
  pointer-events: none;
}

.carousel__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: rgba(255, 255, 255, 0.9);
  border-radius: var(--border-radius-full);
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  transition: all var(--transition-fast);
}

.carousel__btn:hover {
  background-color: var(--color-bg-primary);
  transform: scale(1.1);
}

.carousel__indicators {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-6);
  display: flex;
  gap: var(--space-2);
}

.carousel__indicator {
  width: 8px;
  height: 8px;
  background-color: rgba(255, 255, 255, 0.5);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel__indicator--active {
  width: 24px;
  background-color: var(--color-bg-primary);
}

/* ----------------------------------------
   新闻卡片组件
   ---------------------------------------- */

/* 左图右文卡片 */
.news-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-fast);
}

.news-card:hover {
  box-shadow: var(--shadow-md);
}

.news-card__image-container {
  flex-shrink: 0;
  width: 160px;
  aspect-ratio: 4 / 3;
  border-radius: var(--border-radius);
  overflow: hidden;
  background-color: var(--color-bg-tertiary);
}

@media (min-width: 768px) {
  .news-card__image-container {
    width: 200px;
  }
}

.news-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-card__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.news-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-tight);
}

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

.news-card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-3);
  flex: 1;
}

.news-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.news-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

.news-card__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

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

.news-card__action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--border-radius);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.news-card__action-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-accent);
}

/* 纯文本列表项 */
.news-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.news-list-item:last-child {
  border-bottom: none;
}

.news-list-item__rank {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-rank-default);
  color: var(--color-bg-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  border-radius: var(--border-radius-sm);
}

.news-list-item__rank--1 {
  background-color: var(--color-rank-1);
}

.news-list-item__rank--2 {
  background-color: var(--color-rank-2);
}

.news-list-item__rank--3 {
  background-color: var(--color-rank-3);
}

.news-list-item__title {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

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

/* 混合模块 */
.news-mixed {
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.news-mixed__featured {
  display: block;
}

.news-mixed__image-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-bg-tertiary);
}

.news-mixed__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-mixed__featured-content {
  padding: var(--space-2);
}

.news-mixed__featured-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
}

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

/* ----------------------------------------
   侧边栏组件
   ---------------------------------------- */

.sidebar {
  display: none;
}

@media (min-width: 992px) {
  .sidebar {
    display: block;
    width: var(--sidebar-width);
    flex-shrink: 0;
  }
}

.sidebar__widget {
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border-light);
  margin-bottom: var(--space-6);
  overflow: hidden;
}

.sidebar__widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
}

.sidebar__widget-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.sidebar__widget-title i {
  color: var(--color-accent);
}

.sidebar__widget-more {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

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

.sidebar__widget-content {
  padding: var(--space-4);
}

/* ----------------------------------------
   分页组件
   ---------------------------------------- */

.pagination {
  display: flex;
  justify-content: center;
  margin-top: var(--space-8);
}

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

.pagination li {
  display: inline-flex;
}

.pagination li a,
.pagination li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

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

.pagination li span {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg-primary);
  font-weight: var(--font-weight-medium);
}

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

/* ----------------------------------------
   按钮组件
   ---------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-bg-primary);
}

.btn--outline {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.btn--outline:hover {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ----------------------------------------
   标签组件
   ---------------------------------------- */

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.tag:hover {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
}

/* ----------------------------------------
   底部组件
   ---------------------------------------- */

.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  margin-top: var(--space-12);
}

.footer__main {
  padding: var(--space-12) 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__brand {
  margin-bottom: var(--space-4);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-bg-primary);
  margin-bottom: var(--space-4);
}

.footer__desc {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-4);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  color: var(--color-bg-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
}

.footer__column-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-bg-primary);
  margin-bottom: var(--space-4);
}

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

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

.footer__link:hover {
  color: var(--color-bg-primary);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-6) 0;
}

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

/* ----------------------------------------
   面包屑组件
   ---------------------------------------- */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  font-size: var(--font-size-sm);
}

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

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

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

.breadcrumb__item--current {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

/* ----------------------------------------
   模块标题组件
   ---------------------------------------- */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary);
}

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

.section-header__title i {
  color: var(--color-accent);
}

.section-header__more {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

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