/* 现代个人博客系统 - 统一样式文件 */
/* 兼容PHP 5.2-7.4 */

/* 基础变量定义 */
:root {
  /* 颜色系统 - 清新白色主题 */
  --primary-color: #2563eb;  /* 现代蓝色 */
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary-color: #10b981;  /* 清新的绿色 */
  --accent-color: #f59e0b;  /* 温和的橙色强调 */
  --accent-color-dark: #d97706;
  --dark-color: #1f2937;  /* 深灰黑色 */
  --light-color: #ffffff;  /* 纯白色 */
  --text-color: #374151;  /* 深灰色文字 */
  --text-light: #6b7280;  /* 中灰色文字 */
  --background-color: #ffffff;  /* 纯白背景 */
  --background-light: #e5e7eb;  /* 浅灰背景，增强雪花效果可见性 */
  --border-color: #e5e7eb;  /* 浅灰边框 */
  
  /* 排版 - 现代简洁的无衬线字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Heiti SC", sans-serif;
  --font-mono: "Courier New", Courier, monospace;
  --font-size-sm: 13px;
  --font-size-base: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;
  
  /* 间距 - 更有机的间距 */
  --spacing-xs: 6px;
  --spacing-sm: 12px;
  --spacing-md: 22px;
  --spacing-lg: 32px;
  --spacing-xl: 45px;
  
  /* 边框半径 - 更自然的角度 */
  --border-radius-sm: 2px;  /* 更尖锐的边角 */
  --border-radius-md: 6px;
  --border-radius-lg: 12px;  /* 更适中的大圆角 */
  --border-radius-full: 50%;
  
  /* 阴影 - 清新现代的阴影 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);  /* 现代浅阴影 */
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  
  /* 过渡 - 更自然的时间 */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.25s ease-out;
  --transition-slow: 0.4s ease-out;
}

/* 全局重置和基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 移除移动端白色触摸高亮，但保留其他点击反馈 */
* {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

html {
  scroll-behavior: smooth;
  overflow-y: scroll !important;
  overflow-x: hidden !important;
  scrollbar-gutter: stable;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-color);
  background-color: var(--background-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 页面加载动画已移除 */

/* 滚动动画类 */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 内容区域动画 */
body.homepage .main-content {
  animation: contentFadeIn 0.8s ease-out 0.2s forwards;
  opacity: 0;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 主内容包装器 - 用于sticky footer */
.main-wrapper {
  flex: 1;
}

/* 链接样式 */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn:hover {
  background-color: var(--primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: 6px 12px;
  font-size: var(--font-size-sm);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: white;
}

/* 返回首页按钮 - 全站统一（浅蓝色） */
.back-home-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background-color: #e3f2fd;
  color: #1976d2;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.back-home-btn:hover {
  background-color: #bbdefb;
  color: #1565c0;
  transform: translateY(-2px);
}

.back-home-btn i {
  font-size: 14px;
}

/* 卡片样式 */
.card {
  background-color: var(--background-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card-body {
  padding: var(--spacing-md);
}

/* 头部样式 - 优化版 */
.site-header {
    background-color: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

/* 玻璃半透明头部 - 全站统一 */
.site-header.glass-header {
    background: rgba(255, 255, 255, 0.25) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18) !important;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.1) !important;
}

.site-header.glass-header.scrolled {
    background: rgba(255, 255, 255, 0.4) !important;
    backdrop-filter: blur(25px) !important;
    -webkit-backdrop-filter: blur(25px) !important;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.15) !important;
}





.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 0;
    position: relative;
}

/* 登录按钮样式 */
.header-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    min-width: 140px;
}

/* 登录按钮样式 - 圆形logo样式 */
.btn-login {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: #86efac;
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: 0 2px 8px rgba(134, 239, 172, 0.3);
    border: 0.5px solid rgba(134, 239, 172, 0.5);
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    background-color: #4ade80;
    color: white;
    transform: translateY(-1px) scale(1.1);
    border-color: #4ade80;
    box-shadow: 0 4px 16px rgba(134, 239, 172, 0.4);
}

.btn-login i,
.btn-login svg {
    font-size: 22px;
    width: 22px;
    height: 22px;
    transition: all var(--transition-normal);
}

.login-plus {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    background-color: #22c55e;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
    line-height: 1;
    transition: all var(--transition-normal);
}

.btn-login:hover .login-plus {
    background-color: #16a34a;
    transform: scale(1.1);
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

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

/* Logo样式优化 - Os彩色设计 */
.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-normal);
  letter-spacing: -0.5px;
  padding: 4px 0;
  min-width: 110px;
}

.logo:hover {
  transform: scale(1.03);
}

.logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 110px;
  min-height: 48px;
  transform: translateX(-30px);
}

/* 引用登录页面Os彩色设计 */
.logo-dots {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1;
}

/* 三层粒子圈容器 */
.logo-dots-inner {
  position: absolute;
  width: 60px;
  height: 60px;
  animation: rotateOrbit1 30s linear infinite;
}

.logo-dots-middle {
  position: absolute;
  width: 70px;
  height: 70px;
  margin: -5px;
  animation: rotateOrbit2 25s linear infinite reverse;
}

.logo-dots-outer {
  position: absolute;
  width: 80px;
  height: 80px;
  margin: -10px;
  animation: rotateOrbit1 35s linear infinite;
}

/* 旋转动画 */
@keyframes rotateOrbit1 {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes rotateOrbit2 {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 波浪起伏动画 - 结合靠近和反弹效果 */
@keyframes wavePulse {
  0%, 100% { transform: translateX(-50%) translateY(0) scale(1); opacity: 0.8; }
  25% { transform: translateX(-50%) translateY(-2px) scale(1.3); opacity: 1; }
  50% { transform: translateX(-50%) translateY(0) scale(1); opacity: 0.8; }
  75% { transform: translateX(-50%) translateY(2px) scale(0.7); opacity: 0.6; }
}

.logo-dot {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  opacity: 0.8;
  transition: all 0.3s ease;
}

/* 内层粒子圈 - 12个粒子，半径15px，圆形分布 */
.logo-dots-inner .logo-dot-1 { top: 15px; left: 30px; transform: translateX(-50%); background-color: #ff2d55; animation: wavePulse 2s ease-in-out infinite 0s; }
.logo-dots-inner .logo-dot-2 { top: 17px; left: 44px; transform: translateX(-50%); background-color: #ff9500; animation: wavePulse 2s ease-in-out infinite 0.15s; }
.logo-dots-inner .logo-dot-3 { top: 24px; left: 54px; transform: translateX(-50%); background-color: #ffcc00; animation: wavePulse 2s ease-in-out infinite 0.3s; }
.logo-dots-inner .logo-dot-4 { top: 30px; left: 45px; transform: translate(-50%, -50%); background-color: #34c759; animation: wavePulse 2s ease-in-out infinite 0.45s; }
.logo-dots-inner .logo-dot-5 { top: 36px; left: 54px; transform: translateX(-50%); background-color: #30d158; animation: wavePulse 2s ease-in-out infinite 0.6s; }
.logo-dots-inner .logo-dot-6 { top: 43px; left: 44px; transform: translateX(-50%); background-color: #32d74b; animation: wavePulse 2s ease-in-out infinite 0.75s; }
.logo-dots-inner .logo-dot-7 { top: 45px; left: 30px; transform: translateX(-50%); background-color: #007aff; animation: wavePulse 2s ease-in-out infinite 0.9s; }
.logo-dots-inner .logo-dot-8 { top: 43px; left: 16px; transform: translateX(-50%); background-color: #5856d6; animation: wavePulse 2s ease-in-out infinite 1.05s; }
.logo-dots-inner .logo-dot-9 { top: 36px; left: 6px; transform: translateX(-50%); background-color: #af52de; animation: wavePulse 2s ease-in-out infinite 1.2s; }
.logo-dots-inner .logo-dot-10 { top: 30px; left: 15px; transform: translate(-50%, -50%); background-color: #bf5af2; animation: wavePulse 2s ease-in-out infinite 1.35s; }
.logo-dots-inner .logo-dot-11 { top: 24px; left: 6px; transform: translateX(-50%); background-color: #ff2d55; animation: wavePulse 2s ease-in-out infinite 1.5s; }
.logo-dots-inner .logo-dot-12 { top: 17px; left: 16px; transform: translateX(-50%); background-color: #ff453a; animation: wavePulse 2s ease-in-out infinite 1.65s; }

/* 中层粒子圈 - 12个粒子，半径20px，圆形分布 */
.logo-dots-middle .logo-dot-13 { top: 15px; left: 35px; transform: translateX(-50%); background-color: #ff375f; animation: wavePulse 2.2s ease-in-out infinite 0.08s; }
.logo-dots-middle .logo-dot-14 { top: 17px; left: 50px; transform: translateX(-50%); background-color: #ff9f0a; animation: wavePulse 2.2s ease-in-out infinite 0.23s; }
.logo-dots-middle .logo-dot-15 { top: 24px; left: 59px; transform: translateX(-50%); background-color: #ffd60a; animation: wavePulse 2.2s ease-in-out infinite 0.38s; }
.logo-dots-middle .logo-dot-16 { top: 35px; left: 55px; transform: translate(-50%, -50%); background-color: #30d158; animation: wavePulse 2.2s ease-in-out infinite 0.53s; }
.logo-dots-middle .logo-dot-17 { top: 46px; left: 59px; transform: translateX(-50%); background-color: #32d74b; animation: wavePulse 2.2s ease-in-out infinite 0.68s; }
.logo-dots-middle .logo-dot-18 { top: 53px; left: 50px; transform: translateX(-50%); background-color: #64d2ff; animation: wavePulse 2.2s ease-in-out infinite 0.83s; }
.logo-dots-middle .logo-dot-19 { top: 55px; left: 35px; transform: translateX(-50%); background-color: #0a84ff; animation: wavePulse 2.2s ease-in-out infinite 0.98s; }
.logo-dots-middle .logo-dot-20 { top: 53px; left: 20px; transform: translateX(-50%); background-color: #5e5ce6; animation: wavePulse 2.2s ease-in-out infinite 1.13s; }
.logo-dots-middle .logo-dot-21 { top: 46px; left: 11px; transform: translateX(-50%); background-color: #bf5af2; animation: wavePulse 2.2s ease-in-out infinite 1.28s; }
.logo-dots-middle .logo-dot-22 { top: 35px; left: 15px; transform: translate(-50%, -50%); background-color: #da7fff; animation: wavePulse 2.2s ease-in-out infinite 1.43s; }
.logo-dots-middle .logo-dot-23 { top: 24px; left: 11px; transform: translateX(-50%); background-color: #ff375f; animation: wavePulse 2.2s ease-in-out infinite 1.58s; }
.logo-dots-middle .logo-dot-24 { top: 17px; left: 20px; transform: translateX(-50%); background-color: #ff453a; animation: wavePulse 2.2s ease-in-out infinite 1.73s; }

/* 外层粒子圈 - 14个粒子，半径25px，圆形分布 */
.logo-dots-outer .logo-dot-25 { top: 15px; left: 40px; transform: translateX(-50%); background-color: #ff6482; animation: wavePulse 2.4s ease-in-out infinite 0.04s; }
.logo-dots-outer .logo-dot-26 { top: 17px; left: 55px; transform: translateX(-50%); background-color: #ff9f0a; animation: wavePulse 2.4s ease-in-out infinite 0.19s; }
.logo-dots-outer .logo-dot-27 { top: 24px; left: 64px; transform: translateX(-50%); background-color: #ffd60a; animation: wavePulse 2.4s ease-in-out infinite 0.34s; }
.logo-dots-outer .logo-dot-28 { top: 35px; left: 65px; transform: translate(-50%, -50%); background-color: #30d158; animation: wavePulse 2.4s ease-in-out infinite 0.49s; }
.logo-dots-outer .logo-dot-29 { top: 40px; left: 65px; transform: translate(-50%, -50%); background-color: #32d74b; animation: wavePulse 2.4s ease-in-out infinite 0.64s; }
.logo-dots-outer .logo-dot-30 { top: 50px; left: 64px; transform: translate(-50%, -50%); background-color: #64d2ff; animation: wavePulse 2.4s ease-in-out infinite 0.79s; }
.logo-dots-outer .logo-dot-31 { top: 56px; left: 59px; transform: translateX(-50%); background-color: #0a84ff; animation: wavePulse 2.4s ease-in-out infinite 0.94s; }
.logo-dots-outer .logo-dot-32 { top: 62px; left: 50px; transform: translateX(-50%); background-color: #5e5ce6; animation: wavePulse 2.4s ease-in-out infinite 1.09s; }
.logo-dots-outer .logo-dot-33 { top: 65px; left: 40px; transform: translateX(-50%); background-color: #bf5af2; animation: wavePulse 2.4s ease-in-out infinite 1.24s; }
.logo-dots-outer .logo-dot-34 { top: 62px; left: 30px; transform: translateX(-50%); background-color: #da7fff; animation: wavePulse 2.4s ease-in-out infinite 1.39s; }
.logo-dots-outer .logo-dot-35 { top: 56px; left: 21px; transform: translateX(-50%); background-color: #ff375f; animation: wavePulse 2.4s ease-in-out infinite 1.54s; }
.logo-dots-outer .logo-dot-36 { top: 50px; left: 16px; transform: translate(-50%, -50%); background-color: #ff453a; animation: wavePulse 2.4s ease-in-out infinite 1.69s; }
.logo-dots-outer .logo-dot-37 { top: 40px; left: 15px; transform: translate(-50%, -50%); background-color: #ff6482; animation: wavePulse 2.4s ease-in-out infinite 1.84s; }
.logo-dots-outer .logo-dot-38 { top: 35px; left: 16px; transform: translate(-50%, -50%); background-color: #ff9f0a; animation: wavePulse 2.4s ease-in-out infinite 1.99s; }

.logo-text {
  position: relative;
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', Arial, sans-serif;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -2px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo:hover .logo-text {
  transform: scale(1.05);
}

.logo-o {
  color: #0066cc;
  position: relative;
  z-index: 2;
}

.logo-s {
  color: #34c759;
  position: relative;
  left: -5px;
  z-index: 2;
}

/* 导航菜单优化 - 桌面端 */
.main-nav {
  position: relative;
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 0;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
  padding: 0;
}

/* 导航菜单基础样式 */
.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* 桌面端导航显示 */
.desktop-nav {
  display: flex;
  gap: 18px;
  flex-wrap: nowrap;
  justify-content: center;
  white-space: nowrap;
}

nav ul li {
  position: relative;
}

nav ul li a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 2px;
  position: relative;
  transition: color 0.2s ease;
  border-radius: 0;
  display: inline-block;
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

nav ul li a:hover,
nav ul li a.active {
  color: var(--primary-color);
}

nav ul li a.active {
  font-weight: 600;
}

/* 简约底部指示线（排除下拉菜单，避免滑动条） */
nav ul li a:not(.nav-dropdown-toggle)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  border-radius: 1px;
  transition: width 0.2s ease;
}

nav ul li a:not(.nav-dropdown-toggle):hover::after,
nav ul li a:not(.nav-dropdown-toggle).active::after {
  width: 100%;
}

/* ==================== 导航下拉菜单（Os产品） ==================== */
.nav-dropdown {
  position: relative;
}

.nav-dropdown .nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown .dropdown-arrow {
  transition: transform 0.25s ease;
  margin-left: 2px;
}

.nav-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 280px;
  background: #fff;
  border: 1px solid #e5e5e7;
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0,0,0,.12);
  padding: 8px;
  z-index: 1002;
}

/* 用伪元素桥接 hover 间隙，确保鼠标移动到菜单时不会消失 */
.nav-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 14px;
  z-index: 1001;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
  animation: dropdownIn 0.2s ease;
}

@keyframes dropdownIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.nav-dropdown-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border-radius: 8px;
  color: #1d1d1f;
  text-decoration: none;
  transition: background 0.15s ease;
}

.nav-dropdown-item:hover {
  background: #f5f5f7;
}

.nav-dropdown-title {
  font-weight: 600;
  font-size: 14px;
  color: #1d1d1f;
}

.nav-dropdown-desc {
  font-size: 12px;
  color: #86868b;
  line-height: 1.4;
}


























/* ==================== 论坛风格样式结束 ==================== */

/* 响应式设计 */
@media (max-width: 1024px) {
  .container {
    max-width: 950px;
  }
  
  .sidebar {
    width: 240px;
  }
  
  .article-list,
  .content-area {
    max-width: calc(100% - 260px);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    position: relative;
  }
  
  /* 桌面端导航隐藏，移动端显示 */
  .main-nav {
    display: block;
  }
  
  /* 桌面端导航显示，移动端隐藏 */
  .desktop-nav {
    display: none;
  }
  
  /* 确保登录按钮在移动端显示在右上角 */
  .header-actions {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 12;
  }
  
  .article-card {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
  }
  
  .article-title {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
  }
  
  .article-meta {
    font-size: 11px;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
  }
  
  .article-excerpt {
    font-size: var(--font-size-sm);
  }
  
  .main-content {
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
  }
  
  .article-list,
  .content-area {
    max-width: 100%;
    width: 100%;
  }
  
  .sidebar {
    width: 100%;
    margin-left: 0;
    order: -1; /* 侧边栏显示在主内容前面 */
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-xs);
  }
  
  .header-content {
    padding: 6px 0;
  }
  
  .logo {
    font-size: 18px;
    margin-left: 0;
  }
  
  .logo-container {
    margin-left: 0;
  }
  
  .logo-dots {
    width: 50px;
    height: 50px;
  }
  
  .logo::before,
  .logo::after {
    font-size: 20px;
  }
  
  .btn-login {
    width: 28px;
    height: 28px;
  }
  
  .btn-login i,
  .btn-login svg {
    font-size: 18px;
    width: 18px;
    height: 18px;
  }
  
  .login-plus {
    width: 10px;
    height: 10px;
    font-size: 8px;
  }
  
  .menu-toggle {
    padding: 6px 8px;
  }
  
  /* 确保登录按钮在小屏幕设备上也在右上角 */
  .header-actions {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 12;
  }
  
  .main-content {
    margin-top: var(--spacing-xs);
    gap: var(--spacing-xs);
  }
  
  .article-card {
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
  }
  
  .article-title {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
  }
  
  .article-meta {
    font-size: 10px;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
  }
  
  .article-excerpt {
    height: 45px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    line-clamp: 2; /* 标准属性 */
    font-size: var(--font-size-sm);
    line-height: 1.4;
  }
  
  .article-footer {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
  
  .article-tags {
    justify-content: center;
  }
  
  .read-more {
    align-self: center;
  }
  

  
  .tag {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
  }
  
  .tag-list li a {
    padding: var(--spacing-xs);
    font-size: var(--font-size-sm);
  }
}

/* 主内容区域 */
.main-content {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  padding-bottom: var(--spacing-lg);
}

.article-list,
.content-area {
  flex: 1;
  min-width: 0;
  max-width: calc(100% - 280px); /* 确保主内容区有足够空间 */
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  margin-left: auto;
}

/* 文章卡片样式 - 优化版 */
.article-card {
  background-color: var(--background-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
  max-width: 100%;
  width: 100%;
}

.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.article-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.article-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
  position: relative;
  padding-bottom: var(--spacing-xs);
}

.article-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 1.5px;
}

.article-title a {
  color: var(--dark-color);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: inline-block;
}

.article-title a:hover {
  color: var(--primary-color);
  transform: translateX(3px);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
  padding-left: 5px;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 500;
}

.article-meta i {
  color: var(--primary-color);
}

.article-excerpt {
  color: var(--text-color);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm) 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  line-clamp: 3; /* 标准属性 */
  height: 60px; /* 固定高度，确保所有摘要显示一致 */
}

.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding-top: var(--spacing-xs);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-sm);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px; /* 更小的间距 */
}

.tag {
  background-color: rgba(67, 97, 238, 0.08);
  color: var(--primary-color);
  padding: 2px 8px;
  border-radius: 50px;
  font-size: 12px; /* 更小的字体 */
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-normal);
  border: 1px solid rgba(67, 97, 238, 0.1);
}

.tag:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  border-color: var(--primary-color);
  box-shadow: 0 2px 8px rgba(67, 97, 238, 0.2);
}

.read-more {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-normal);
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--primary-color);
  font-size: 13px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(139, 90, 60, 0.15);
}

.read-more:hover {
  background-color: var(--primary-dark);
  color: white;
  transform: translateY(-2px);
  border-color: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(139, 90, 60, 0.25);
}



/* 额外的动画效果 */
@keyframes titleUnderline {
  0% {
    width: 40px;
  }
  100% {
    width: 80px;
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(67, 97, 238, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(67, 97, 238, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(67, 97, 238, 0);
  }
}

/* 微交互效果 */
.btn,
.read-more,
.tag,
.cloud-tag {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before,
.read-more::before,
.tag::before,
.cloud-tag::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: all var(--transition-normal);
  z-index: -1;
}

.btn:hover::before,
.read-more:hover::before,
.tag:hover::before,
.cloud-tag:hover::before {
  left: 100%;
}

/* 滚动监听效果 */
@keyframes contentFadeIn {
  to {
    opacity: 1;
  }
}

/* 为链接添加下划线动画 */
a:not(.btn):not(.logo):not(.nav-link):not(.btn-login):not(.tag):not(.read-more):not(.cloud-tag):not(.rc-back):not(.sc-get-points):not(.sc-back):not(.forum-category-btn):not(.more-music-link) {
  position: relative;
}

a:not(.btn):not(.logo):not(.nav-link):not(.btn-login):not(.tag):not(.read-more):not(.cloud-tag):not(.rc-back):not(.sc-get-points):not(.sc-back):not(.forum-category-btn):not(.more-music-link)::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-normal);
}

a:not(.btn):not(.logo):not(.nav-link):not(.btn-login):not(.tag):not(.read-more):not(.cloud-tag):not(.rc-back):not(.sc-get-points):not(.sc-back):not(.forum-category-btn):not(.more-music-link):hover::after {
  width: 100%;
}

/* 标签云 */
.tag-cloud {
  text-align: center;
  padding: var(--spacing-lg) 0;
}

.tag-cloud-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--dark-color);
}

.tag-cloud-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
}

.cloud-tag {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--background-color);
  color: var(--primary-color);
  border-radius: var(--border-radius-full);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-normal);
  border: 1px solid rgba(52, 152, 219, 0.2);
}

.cloud-tag:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-sm);
  border-color: var(--primary-color);
}

.cloud-tag.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* 文章详情页 */
.article-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-xl) 0;
  background-color: var(--background-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.article-header h1 {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
  color: var(--dark-color);
}

/* 已移除文章详情页样式 - 旧文章详情页面已删除 */
/*
.article-detail {
  background-color: var(--background-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}
*/

/* 已移除文章内容样式 - 旧文章详情页面已删除 */
/*
.article-content {
  color: var(--text-color);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.article-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  color: var(--dark-color);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--light-color);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  color: var(--dark-color);
}

.article-content p {
  margin-bottom: var(--spacing-md);
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.article-content li {
  margin-bottom: var(--spacing-xs);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-sm);
  margin: var(--spacing-md) 0;
  display: block;
}
*/

/* 已移除相关文章样式 - 旧文章详情页面已删除 */
/*
.related-articles {
  background-color: var(--background-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

.related-articles-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--dark-color);
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.related-article {
  background-color: var(--background-light);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.related-article:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.related-article-thumbnail {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.related-article-content {
  padding: var(--spacing-sm);
}

.related-article-title {
  font-size: var(--font-size-base);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.related-article-title a {
  color: var(--text-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.related-article-title a:hover {
  color: var(--primary-color);
}
*/

/* 已移除评论区样式 - 旧文章详情页面已删除 */
/*
.comments {
  background-color: var(--background-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.comments-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--dark-color);
}

.comment-form {
  margin-bottom: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* 关于页面 */
.about-section {
  background-color: var(--background-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

.about-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--light-color);
}

.avatar {
  width: 150px;
  height: 150px;
  border-radius: var(--border-radius-full);
  margin-bottom: var(--spacing-md);
  object-fit: cover;
  border: 4px solid var(--background-light);
  box-shadow: var(--shadow-md);
}

.author-name {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--dark-color);
}

.author-title {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background-color: var(--background-light);
  color: var(--text-color);
  text-decoration: none;
  transition: all var(--transition-normal);
  font-size: 18px;
}

.social-link:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.about-content {
  color: var(--text-color);
  line-height: 1.8;
}

.about-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  color: var(--dark-color);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--light-color);
}

.about-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  color: var(--dark-color);
}

.about-content p {
  margin-bottom: var(--spacing-md);
}

.about-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.about-content li {
  margin-bottom: var(--spacing-xs);
}

/* 技能部分 */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.skill-item {
  background-color: var(--background-light);
  color: var(--text-color);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.skill-item:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

/* 简洁页脚样式 - 登录页面风格 */
.site-footer {
  background-color: #f5f5f7;
  border-top: 1px solid #e3e3e3;
  padding: 40px 0;
  margin-top: auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

.site-footer .footer-content {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
}

.footer-section {
  width: 100%;
}

.footer-heading {
  font-size: 16px;
  font-weight: 400;
  color: #1d1d1f;
  margin-bottom: 16px;
  text-align: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #ffffff 0%, #f5f5f7 100%);
  border: 1px solid #e0e0e5;
  border-radius: 12px;
  color: #555;
  text-decoration: none;
  font-size: 18px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

.social-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.4) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.social-link:hover::before {
  opacity: 1;
}

.social-icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
  transition: transform 0.3s ease;
  position: relative;
  z-index: 1;
}

/* GitHub - 黑色主题 */
.social-link.github:hover {
  background: linear-gradient(135deg, #24292e 0%, #1a1e22 100%);
  border-color: #24292e;
  color: #ffffff;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px rgba(36, 41, 46, 0.3);
}

/* 知乎 - 蓝色主题 */
.social-link.zhihu:hover {
  background: linear-gradient(135deg, #0066ff 0%, #0052cc 100%);
  border-color: #0066ff;
  color: #ffffff;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
}

/* 微信 - 绿色主题 */
.social-link.weixin:hover {
  background: linear-gradient(135deg, #07c160 0%, #06ad56 100%);
  border-color: #07c160;
  color: #ffffff;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px rgba(7, 193, 96, 0.3);
}

/* 微博 - 红色主题 */
.social-link.weibo:hover {
  background: linear-gradient(135deg, #e6162d 0%, #c41228 100%);
  border-color: #e6162d;
  color: #ffffff;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px rgba(230, 22, 45, 0.3);
}

/* CSDN - 橙色主题 */
.social-link.csdn:hover {
  background: linear-gradient(135deg, #fc5531 0%, #e64a29 100%);
  border-color: #fc5531;
  color: #ffffff;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px rgba(252, 85, 49, 0.3);
}

.social-link:hover .social-icon {
  transform: scale(1.1);
}

/* 默认状态的品牌色 */
.social-link.github {
  color: #24292e;
}

.social-link.zhihu {
  color: #0066ff;
}

.social-link.weixin {
  color: #07c160;
}

.social-link.weibo {
  color: #e6162d;
}

.social-link.weibo .social-icon {
  width: 26px;
  height: 26px;
}

.social-link.csdn {
  color: #fc5531;
}

.social-link.csdn .social-icon {
  width: 26px;
  height: 26px;
}

/* 移除点击时的焦点轮廓 */
.social-link,
.social-link:focus,
.social-link:focus-visible,
.social-link:active,
.social-link:hover {
  outline: none !important;
  -webkit-tap-highlight-color: transparent;
}

.social-link * {
  outline: none !important;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin: 8px 0;
}

.footer-link {
  color: #0066cc;
  text-decoration: none !important;
  border-bottom: none !important;
  font-size: 17px;
  font-weight: 400;
  transition: opacity 0.2s ease;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

.footer-link:hover {
  opacity: 0.8;
  text-decoration: none !important;
  border-bottom: none !important;
}

.footer-copyright {
  color: #86868b;
  font-size: 12px;
  margin-top: 4px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

/* 简洁页脚响应式设计 */
@media (max-width: 768px) {
  .site-footer {
    padding: 24px 0;
  }
  
  .footer-links {
    gap: 24px;
  }
  
  .footer-link {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .site-footer .container {
    padding: 0 15px;
  }
  
  .footer-content {
    gap: 25px;
  }
  
  .footer-logo {
    font-size: 20px;
  }
  
  .footer-heading {
    font-size: 14px;
  }
}

/* 响应式设计 */
@media (max-width: 992px) {
  .main-content {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    order: -1;
  }

}

@media (max-width: 768px) {
  :root {
    --font-size-xl: 20px;
    --font-size-xxl: 28px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
  }
  
  /* header-content样式已在前面定义，这里移除冲突 */
  
  nav ul {
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .article-header h1 {
    font-size: var(--font-size-xl);
  }
  
  /* 已移除article-detail响应式样式 */
  /*
  .article-detail {
    padding: var(--spacing-md);
  }
  */
  
  .avatar {
    width: 120px;
    height: 120px;
  }
  
  .author-name {
    font-size: var(--font-size-xl);
  }
  
  .social-links {
    gap: var(--spacing-sm);
  }
  
  .social-link {
    width: 35px;
    height: 35px;
    font-size: 16px;
  }
  
  .footer-content {
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-xxl: 24px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
  }
  
  .article-card {
    padding: var(--spacing-md);
  }
  
  .article-title {
    font-size: var(--font-size-lg);
  }
  
  .article-meta {
    font-size: 12px;
    gap: var(--spacing-sm);
  }
  
  .related-articles-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease forwards;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.pulse {
  animation: pulse 2s infinite;
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--light-color);
  border-radius: var(--border-radius-full);
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}



/* 打印样式 */
@media print {
  header,
  nav,
  aside,
  footer {
    display: none;
  }
  
  .main-content {
    flex-direction: column;
  }
  
  .article-card,
  .article-detail {
    box-shadow: none;
    margin-bottom: 0;
  }
  
  a {
    color: var(--text-color);
    text-decoration: none;
  }
}