/* ========================================
   Global Styles - 全局样式
   ======================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 粒子背景 Canvas */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* 通用容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ========================================
   Navigation - 导航栏
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  padding: var(--space-4) 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(250, 250, 250, 0.8);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-weight: 700;
  font-size: var(--text-xl);
}

.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--text-sm);
  position: relative;
  transition: color var(--transition-fast);
  padding: var(--space-2) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

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

.btn-icon {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.mobile-menu-toggle {
  display: none;
}

/* ========================================
   Search Modal - 搜索模态框
   ======================================== */

.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.search-modal.active {
  opacity: 1;
  visibility: visible;
}

.search-container {
  width: 100%;
  max-width: 600px;
  padding: 0 var(--space-6);
  position: relative;
}

.search-input {
  width: 100%;
  padding: var(--space-4) var(--space-12) var(--space-4) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  font-size: var(--text-lg);
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-close {
  position: absolute;
  right: calc(var(--space-6) + var(--space-2));
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-lg);
  font-size: var(--text-xl);
  transition: all var(--transition-fast);
}

.search-close:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* ========================================
   Mobile Menu - 移动端菜单
   ======================================== */

.mobile-menu {
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-6);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-lg);
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-color);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.mobile-nav-link::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent-primary);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--text-primary);
}

.mobile-nav-link:hover::before {
  opacity: 1;
}

/* ========================================
   Hero Section - 英雄区域
   ======================================== */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-20) var(--space-6);
  text-align: center;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--accent-primary);
  margin-bottom: var(--space-6);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.title-line {
  display: block;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  letter-spacing: 0.1em;
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--text-tertiary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-16);
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: var(--text-base);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
}

.btn-ghost:hover {
  color: var(--accent-primary);
}

.btn-ghost i {
  transition: transform var(--transition-fast);
}

.btn-ghost:hover i {
  transform: translateX(4px);
}

/* Hero 统计 */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* 滚动指示器 */
.hero-scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-xs);
  animation: bounce 2s infinite;
}

.scroll-mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  display: flex;
  justify-content: center;
  padding-top: var(--space-2);
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  animation: scrollWheel 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

@keyframes scrollWheel {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(8px); }
}

/* ========================================
   Section Styles - 区块样式
   ======================================== */

.section {
  padding: var(--space-24) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--accent-primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.section-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section-actions {
  text-align: center;
  margin-bottom: var(--space-8);
}

/* ========================================
   News Section - 新闻模块
   ======================================== */

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow-sm);
}

.news-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

.news-card:hover .news-image img {
  transform: scale(1.05);
}

.news-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to top, rgba(10, 10, 15, 0.9), transparent);
}

.news-category {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: white;
}

.news-content {
  padding: var(--space-5);
}

.news-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--text-primary);
}

.news-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

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

/* ========================================
   Portfolio Section - 作品展示
   ======================================== */

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-6);
}

.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.portfolio-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow-sm);
}

.portfolio-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

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

.portfolio-card:hover .portfolio-image img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.portfolio-card:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-view-btn {
  padding: var(--space-3) var(--space-6);
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 500;
  cursor: pointer;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.portfolio-card:hover .portfolio-view-btn {
  transform: translateY(0);
}

.portfolio-type {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: white;
}

.portfolio-content {
  padding: var(--space-5);
}

.portfolio-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.portfolio-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.portfolio-tech {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.tech-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ========================================
   Blog Section - 博客模块
   ======================================== */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  text-decoration: none;
  cursor: pointer;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow-sm);
}

.blog-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

.blog-card:hover .blog-image img {
  transform: scale(1.05);
}

.blog-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to top, rgba(10, 10, 15, 0.9), transparent);
}

.blog-category {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: white;
}

.blog-content {
  padding: var(--space-5);
}

.blog-tags {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.blog-tag {
  padding: var(--space-1) var(--space-2);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.blog-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
  line-height: 1.4;
}

.blog-excerpt {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

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

.author-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  color: white;
}

.blog-stats {
  display: flex;
  gap: var(--space-4);
}

.blog-stats span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ========================================
   About Section - 关于区域
   ======================================== */

.section-about {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  align-items: center;
}

.about-image-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.about-image {
  position: relative;
}

.image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: var(--gradient-primary);
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.3;
}

.image-container {
  position: relative;
  width: 280px;
  height: 280px;
  border-radius: var(--radius-2xl);
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

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

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: var(--text-xl);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  transform: translateY(-2px);
}

.about-content {
  max-width: 600px;
}

.about-name {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-title {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

.about-desc {
  font-size: var(--text-base);
  color: var(--text-tertiary);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}

.about-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.skill-tag {
  padding: var(--space-2) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

.about-actions {
  display: flex;
  gap: var(--space-4);
}

/* ========================================
   Footer - 页脚
   ======================================== */

.footer {
  background: var(--bg-secondary);
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand .logo {
  margin-bottom: var(--space-4);
}

.footer-desc {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  max-width: 300px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.footer-column h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--space-2);
}

.footer-column a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* ========================================
   Back to Top - 回到顶部
   ======================================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-sticky);
}

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

.back-to-top:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  transform: translateY(-2px);
}

/* ========================================
   Loading Skeleton - 加载骨架屏
   ======================================== */

.loading-skeleton {
  display: contents;
}

.skeleton-card,
.skeleton-portfolio,
.skeleton-blog {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.skeleton-image {
  height: 200px;
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-card-hover) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.skeleton-image.large {
  height: 200px;
  aspect-ratio: 16 / 9;
}

.skeleton-content {
  padding: var(--space-5);
}

.skeleton-line {
  height: 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-card-hover) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.skeleton-line.short {
  width: 40%;
}

.skeleton-line.medium {
  width: 70%;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* 隐藏骨架屏当内容加载完成 */
.news-grid.loaded .loading-skeleton,
.portfolio-grid.loaded .loading-skeleton,
.blog-grid.loaded .loading-skeleton {
  display: none;
}