@charset "UTF-8";

/* ============================================
   Theme C: 活力渐变风格 (Vibrant Gradient)
   色彩体系：橙色 + 粉色 + 紫色渐变
   ============================================ */

:root {
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-4: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-5: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
  --primary: #7C3AED;
  --primary-light: #EDE9FE;
  --secondary: #EC4899;
  --accent: #F59E0B;
  --success: #10B981;
  --bg-primary: #FAFAFA;
  --bg-secondary: #FFFFFF;
  --bg-gradient: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
  --text-primary: #1E1B4B;
  --text-secondary: #6B7280;
  --text-muted: #9CA3AF;
  --text-light: #FFFFFF;
  --border-color: #E5E7EB;
  --shadow-sm: 0 4px 6px rgba(124, 58, 237, 0.1);
  --shadow-md: 0 8px 25px rgba(124, 58, 237, 0.15);
  --shadow-lg: 0 20px 50px rgba(124, 58, 237, 0.2);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.3);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-full: 9999px;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全局样式 */
* {
  box-sizing: border-box;
}

body {
  background: var(--bg-gradient);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}

/* ============================================
   导航栏 - 毛玻璃效果
   ============================================ */
.gradient-navbar {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(124, 58, 237, 0.1);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.gradient-navbar .navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.gradient-navbar .site-name {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-navbar .nav-menu {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.gradient-navbar .nav-link {
  display: block;
  padding: 0.625rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
}

.gradient-navbar .nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.gradient-navbar .nav-link.active {
  background: var(--gradient-1);
  color: var(--text-light);
}

.gradient-search-btn {
  background: var(--gradient-2);
  color: var(--text-light);
  border: none;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

.gradient-search-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-md);
}

/* 移动端菜单 */
.mobile-toggle {
  display: none;
  background: var(--gradient-1);
  border: none;
  color: var(--text-light);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

@media (max-width: 991px) {
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .gradient-navbar .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
  }

  .gradient-navbar .nav-menu.show {
    display: flex;
  }
}

/* ============================================
   首页 Hero - 渐变轮播
   ============================================ */
.hero-banner {
  position: relative;
  margin-bottom: 3rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-1);
  opacity: 0.3;
  z-index: 1;
  pointer-events: none;
}

.hero-banner .carousel-item img {
  border-radius: var(--radius-lg);
  aspect-ratio: 21/9;
  object-fit: cover;
}

.hero-banner .carousel-caption {
  background: linear-gradient(to top, rgba(30, 27, 75, 0.9), transparent);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  left: 0;
  right: 0;
  bottom: 0;
  padding: 3rem 2rem 2rem;
  z-index: 2;
}

.hero-banner .carousel-caption h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-banner .carousel-indicators li {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin: 0 6px;
  background: rgba(255,255,255,0.4);
  border: 2px solid transparent;
  transition: var(--transition);
}

.hero-banner .carousel-indicators li.active {
  background: var(--text-light);
  border-color: var(--secondary);
  transform: scale(1.2);
}

/* ============================================
   公告条 - 滚动动画
   ============================================ */
.announcement-bar {
  background: var(--gradient-4);
  padding: 0.75rem 0;
  margin-bottom: 2rem;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.announcement-content {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-light);
  font-weight: 500;
}

.announcement-icon {
  background: rgba(255,255,255,0.2);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}

.announcement-text {
  animation: scroll-left 20s linear infinite;
}

@keyframes scroll-left {
  0% { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}

/* ============================================
   Section 标题
   ============================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title .icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 1rem;
}

.section-more {
  background: var(--gradient-3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.section-more i {
  color: var(--primary);
}

.section-more:hover {
  transform: translateX(5px);
}

/* ============================================
   文章卡片 - 渐变悬浮效果
   ============================================ */
.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.gradient-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
  border: 2px solid transparent;
}

.gradient-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.gradient-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(124, 58, 237, 0.2);
}

.gradient-card:hover::before {
  transform: scaleX(1);
}

.gradient-card-image {
  flex-shrink: 0;
  width: 200px;
  height: 140px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}

.gradient-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-1);
  opacity: 0;
  transition: var(--transition);
}

.gradient-card:hover .gradient-card-image::after {
  opacity: 0.2;
}

.gradient-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.gradient-card:hover .gradient-card-image img {
  transform: scale(1.1);
}

.gradient-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.gradient-card-category {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--gradient-5);
  color: var(--primary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  width: fit-content;
  margin-bottom: 0.75rem;
}

.gradient-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.gradient-card-title:hover {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-card-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.gradient-card-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.gradient-card-meta span {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

@media (max-width: 576px) {
  .gradient-card {
    flex-direction: column;
  }

  .gradient-card-image {
    width: 100%;
    height: 180px;
  }
}

/* ============================================
   CTA 按钮
   ============================================ */
.cta-btn {
  background: var(--gradient-1);
  color: var(--text-light);
  border: none;
  padding: 1rem 2.5rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.cta-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: 0.5s;
}

.cta-btn:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-glow);
}

.cta-btn:hover::before {
  left: 100%;
}

.cta-btn:disabled {
  background: var(--text-muted);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

/* ============================================
   侧边栏
   ============================================ */
.sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.sidebar-title {
  font-size: 1.125rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-title i {
  color: var(--primary);
}

/* 热门文章 */
.hot-article-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.hot-article-item:last-child {
  border-bottom: none;
}

.hot-article-item:hover {
  padding-left: 0.75rem;
  background: linear-gradient(90deg, var(--primary-light), transparent);
  margin: 0 -0.5rem;
  padding-right: 0.5rem;
  border-radius: var(--radius-sm);
}

.hot-rank {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--bg-primary);
  color: var(--text-muted);
}

.hot-rank.top-1 {
  background: var(--gradient-4);
  color: var(--text-light);
}

.hot-rank.top-2 {
  background: var(--gradient-1);
  color: var(--text-light);
}

.hot-rank.top-3 {
  background: var(--gradient-3);
  color: var(--text-light);
}

.hot-article-title {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: var(--transition);
}

.hot-article-item:hover .hot-article-title {
  color: var(--primary);
}

/* 视频列表 */
.video-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.video-item {
  transition: var(--transition);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.video-thumb {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 16/9;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.video-item:hover .video-thumb img {
  transform: scale(1.08);
}

.video-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  background: linear-gradient(to top, rgba(30, 27, 75, 0.8), transparent 60%);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0.75rem;
}

.video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  color: white;
  opacity: 0.9;
  transition: var(--transition);
  text-shadow: 0 4px 20px rgba(124, 58, 237, 0.5);
}

.video-item:hover .video-play {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.15);
  color: var(--primary-light);
}

.video-duration {
  background: var(--gradient-1);
  color: white;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.video-info {
  padding-top: 0.625rem;
}

.video-title {
  font-size: 0.875rem;
  color: var(--text-primary);
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
  font-weight: 500;
  transition: var(--transition);
}

.video-title:hover {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.tag-item {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--gradient-5);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: 2px solid transparent;
}

.tag-item:hover {
  background: var(--gradient-1);
  color: var(--text-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb-bar {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
}

.breadcrumb-list a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumb-list a:hover {
  color: var(--primary);
}

.breadcrumb-list .separator {
  color: var(--text-muted);
}

/* ============================================
   筛选栏
   ============================================ */
.filter-bar {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.filter-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.5rem 0;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text-secondary);
  transition: var(--transition);
  border: 2px solid transparent;
}

.filter-btn:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.filter-btn.active {
  background: var(--gradient-1);
  color: var(--text-light);
}

/* ============================================
   分页
   ============================================ */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  padding: 2.5rem 0;
}

.pagination {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.pagination .page-item .page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: 0 0.875rem;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  border: 2px solid var(--border-color);
  transition: var(--transition);
}

.pagination .page-item .page-link:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.pagination .page-item.active .page-link {
  background: var(--gradient-1);
  color: var(--text-light);
  border-color: transparent;
}

/* ============================================
   文章详情页
   ============================================ */
.article-detail {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.article-detail-title {
  font-size: 2.25rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
  margin-bottom: 1.25rem;
}

.article-detail-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 2rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.article-detail-meta span {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.article-tag {
  display: inline-block;
  padding: 0.375rem 1rem;
  background: var(--gradient-5);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.article-tag:hover {
  background: var(--gradient-1);
  color: var(--text-light);
  transform: translateY(-2px);
}

.article-content {
  font-size: 1.0625rem;
  line-height: 2;
  color: var(--text-primary);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  box-shadow: var(--shadow-sm);
}

.article-content p {
  margin-bottom: 1.25rem;
}

.article-content h2,
.article-content h3 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 文章投票 */
.article-vote {
  display: flex;
  justify-content: center;
  gap: 4rem;
  padding: 2.5rem 0;
  margin-top: 2rem;
  border-top: 2px solid var(--border-color);
}

.vote-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-muted);
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.vote-btn:hover {
  background: var(--gradient-5);
  color: var(--primary);
  transform: scale(1.1);
}

.vote-btn i {
  font-size: 2.5rem;
}

.vote-btn span {
  font-size: 1.125rem;
  font-weight: 700;
}

/* 上下篇导航 */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.article-nav-item {
  background: var(--gradient-5);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: var(--transition);
}

.article-nav-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.article-nav-item .nav-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-nav-item .nav-title {
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition);
}

.article-nav-item:hover .nav-title {
  color: var(--primary);
}

@media (max-width: 576px) {
  .article-nav {
    grid-template-columns: 1fr;
  }
}

/* 相关文章 */
.related-articles {
  margin-top: 2.5rem;
}

.related-articles-title {
  font-size: 1.375rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.25rem;
}

.related-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.related-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.related-list li:last-child {
  border-bottom: none;
}

.related-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.related-list a::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-1);
  flex-shrink: 0;
}

.related-list a:hover {
  color: var(--primary);
  padding-left: 0.75rem;
}

/* ============================================
   页脚
   ============================================ */
.gradient-footer {
  background: var(--gradient-1);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
  position: relative;
  overflow: hidden;
}

.gradient-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.footer-stats {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  font-size: 0.9375rem;
  position: relative;
  z-index: 1;
}

.footer-copyright {
  text-align: center;
  font-size: 0.875rem;
  position: relative;
  z-index: 1;
}

.footer-copyright a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.footer-copyright a:hover {
  color: white;
}

/* ============================================
   动画效果
   ============================================ */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(124, 58, 237, 0.3); }
  50% { box-shadow: 0 0 40px rgba(124, 58, 237, 0.5); }
}

.animate-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 768px) {
  .section-title {
    font-size: 1.5rem;
  }

  .article-detail {
    padding: 1.5rem;
  }

  .article-detail-title {
    font-size: 1.75rem;
  }

  .sidebar {
    position: static;
    margin-top: 2rem;
  }

  .footer-stats {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
}