```css
/* ===== 51吃瓜前沿 - 全网最快娱乐吃瓜社区 ===== */
/* 深色霓虹风格 - 暗夜吃瓜 · 霓虹高亮 */

/* ===== 重置与基础 ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scrollbar-width: thin;
  scrollbar-color: #ec4899 #1a1a2a;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #1a1a2a;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #ec4899, #be185d);
  border-radius: 20px;
}

body {
  background: 
    radial-gradient(ellipse at 20% 0%, rgba(236, 72, 153, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(168, 85, 247, 0.05) 0%, transparent 50%),
    linear-gradient(145deg, #0a0a12 0%, #12121f 50%, #0d0d1a 100%);
  color: #e0e0ee;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: #f472b6;
  text-decoration: none;
  transition: color 0.25s ease, text-shadow 0.25s ease, border-bottom 0.25s ease;
}

a:hover {
  color: #f9a8d4;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-shadow: 0 0 20px rgba(244, 114, 182, 0.3);
}

h1, h2, h3, h4, h5, h6 {
  color: #f0f0f8;
  font-weight: 600;
  line-height: 1.3;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  letter-spacing: -0.5px;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 1.5rem;
  border-left: 6px solid #ec4899;
  padding-left: 1rem;
  position: relative;
  overflow: hidden;
}

h2::after {
  content: '';
  position: absolute;
  left: 1rem;
  bottom: -4px;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, #ec4899, transparent);
  border-radius: 2px;
}

h3 {
  font-size: 1.25rem;
}

img {
  max-width: 100%;
  display: block;
  background: #2d2d4a;
  border-radius: 12px;
  transition: transform 0.4s ease, box-shadow 0.4s ease, filter 0.4s ease;
}

img:hover {
  transform: scale(1.02);
  box-shadow: 0 10px 30px -10px rgba(236, 72, 153, 0.2);
}

p {
  margin-bottom: 0.8rem;
}

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.2rem;
  width: 100%;
}

/* ===== 顶部导航 ===== */
.navbar {
  background: rgba(13, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 1rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(45, 45, 74, 0.6);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.logo a {
  font-size: 1.8rem;
  font-weight: 700;
  color: #f0f0f8;
  letter-spacing: 1px;
  background: linear-gradient(135deg, #ec4899, #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all 0.3s ease;
}

.logo a:hover {
  text-decoration: none;
  filter: drop-shadow(0 0 10px rgba(236, 72, 153, 0.4));
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  list-style: none;
  padding: 0;
}

.nav-links a {
  color: #d0d0e0;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0.25rem;
  position: relative;
}

.nav-links a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, #ec4899, #a855f7);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.nav-links a:hover {
  color: #f472b6;
  text-decoration: none;
  border-bottom: none;
}

.nav-links a:hover::before {
  width: 100%;
}

.nav-links .active {
  color: #ec4899;
}

.nav-links .active::before {
  width: 100%;
}

/* ===== 卡片通用 ===== */
.card {
  background: rgba(26, 26, 42, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(45, 45, 74, 0.6);
  border-radius: 16px;
  padding: 1.2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(236, 72, 153, 0.4), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  box-shadow: 0 15px 35px -10px rgba(236, 72, 153, 0.25), 0 0 0 1px rgba(236, 72, 153, 0.1);
  transform: translateY(-5px);
  border-color: rgba(236, 72, 153, 0.3);
}

.card:hover::before {
  opacity: 1;
}

.card img {
  border-radius: 12px;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: #2d2d4a;
}

.card h3 {
  margin: 0.5rem 0;
  font-size: 1.1rem;
  transition: color 0.3s ease;
}

.card:hover h3 {
  color: #f9a8d4;
}

/* ===== 网格布局 ===== */
.grid {
  display: grid;
  gap: 1.8rem;
}

.grid-events {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.grid-people {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  background: rgba(45, 45, 74, 0.8);
  color: #f472b6;
  padding: 0.25rem 0.8rem;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(236, 72, 153, 0.2);
  transition: all 0.3s ease;
}

.badge:hover {
  background: rgba(236, 72, 153, 0.15);
  border-color: #ec4899;
  transform: translateY(-1px);
}

/* ===== 热度 ===== */
.heat {
  color: #ec4899;
  letter-spacing: 3px;
  font-size: 0.85rem;
  text-shadow: 0 0 10px rgba(236, 72, 153, 0.3);
}

/* ===== 元数据 ===== */
.meta {
  color: #b0b0cc;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ===== 头条大卡 ===== */
.featured-card {
  background: linear-gradient(135deg, rgba(28, 28, 52, 0.95), rgba(20, 20, 40, 0.9));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(236, 72, 153, 0.3);
  border-radius: 24px;
  padding: 1.8rem;
  position: relative;
  overflow: hidden;
}

.featured-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.1), transparent 70%);
  pointer-events: none;
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.featured-card article {
  position: relative;
  z-index: 1;
}

.featured-card img {
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

/* ===== 布局 ===== */
.layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
  margin-top: 2rem;
}

/* ===== 侧边栏 ===== */
.sidebar-card {
  background: rgba(20, 20, 40, 0.8);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(45, 45, 74, 0.6);
  border-radius: 20px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  transition: border-color 0.3s ease;
}

.sidebar-card:hover {
  border-color: rgba(236, 72, 153, 0.3);
}

.sidebar-card h3 {
  border-bottom: 1px solid rgba(45, 45, 74, 0.6);
  padding-bottom: 0.7rem;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

/* ===== 热榜 ===== */
.hot-list {
  list-style: none;
  padding: 0;
}

.hot-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(45, 45, 74, 0.5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s ease, padding-left 0.3s ease;
  cursor: pointer;
}

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

.hot-list li:hover {
  background: rgba(236, 72, 153, 0.05);
  padding-left: 0.5rem;
}

.hot-list span {
  color: #f472b6;
  font-weight: 600;
}

.hot-list li span:first-child {
  background: rgba(236, 72, 153, 0.15);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  margin-right: 0.5rem;
}

.hot-list li span:last-child {
  color: #b0b0cc;
  font-size: 0.85rem;
}

/* ===== 标签云 ===== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tag {
  background: rgba(45, 45, 74, 0.8);
  color: #f472b6;
  padding: 0.3rem 0.9rem;
  border-radius: 30px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.tag:hover {
  background: rgba(236, 72, 153, 0.15);
  border-color: #ec4899;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(236, 72, 153, 0.2);
}

/* ===== 评论区 ===== */
.comment-item {
  background: rgba(26, 26, 42, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(45, 45, 74, 0.5);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
  transition: all 0.3s ease;
}

.comment-item:hover {
  border-color: rgba(236, 72, 153, 0.3);
  transform: translateX(5px);
  background: rgba(26, 26, 42, 0.9);
}

.comment-user {
  color: #f472b6;
  font-weight: 600;
  margin-right: 0.5rem;
}

.comment-time {
  color: #8888aa;
  font-size: 0.8rem;
}

.comment-text {
  color: #e0e0ee;
  margin-top: 0.3rem;
}

/* ===== 按钮 ===== */
.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  background: linear-gradient(135deg, #ec4899, #be185d);
  color: #ffffff;
  padding: 0.8rem 2rem;
  border-radius: 60px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: inline-block;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(236, 72, 153, 0.3);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease, height 0.5s ease;
}

.btn:hover {
  background: linear-gradient(135deg, #f472b6, #ec4899);
  text-decoration: none;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(236, 72, 153, 0.4);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-outline {
  background: transparent;
  border: 2px solid #f472b6;
  color: #f472b6;
  box-shadow: none;
}

.btn-outline:hover {
  background: #f472b6;
  color: #0a0a12;
  box-shadow: 0 4px 20px rgba(244, 114, 182, 0.3);
}

.btn-outline::before {
  display: none;
}

/* ===== 底部 ===== */
footer {
  background: rgba(10, 10, 18, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(45, 45, 74, 0.6);
  padding: 2.5rem 1.5rem;
  margin-top: 4rem;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #ec4899, transparent);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  color: #8888aa;
}

.footer-links a {
  color: #f472b6;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.footer-links a:hover {
  color: #f9a8d4;
  text-shadow: 0 0 10px rgba(244, 114, 182, 0.3);
}

.copyright {
  text-align: center;
  color: #8888aa;
  margin-top: 2rem;
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ===== 图片宽度辅助 ===== */
img {
  background: #2d2d4a;
}

/* ===== 文本辅助 ===== */
.text-secondary {
  color: #b0b0cc;
}

.bg-section {
  background: rgba(22, 22, 42, 0.8);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 2rem;
  border-radius: 28px;
  border: 1px solid rgba(45, 45, 74, 0.5);
}

.bg-platform {
  background: linear-gradient(135deg, rgba(20, 20, 40, 0.95), rgba(30, 30, 60, 0.9));
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 2.4rem;
  border-radius: 28px;
  border: 1px solid rgba(236, 72, 153, 0.2);
  position: relative;
  overflow: hidden;
}

.bg-platform::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.1), transparent 70%);
  pointer-events: none;
}

/* ===== 滚动动画 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card, .featured-card, .sidebar-card, .comment-item, .bg-section, .bg-platform {
  animation: fadeInUp 0.6s ease-out both;
}

.card:nth-child(2), .comment-item:nth-child(2) { animation-delay: 0.05s; }
.card:nth-child(3), .comment-item:nth-child(3) { animation-delay: 0.1s; }
.card:nth-child(4), .comment-item:nth-child(4) { animation-delay: 0.15s; }
.card:nth-child(5), .comment-item:nth-child(5) { animation-delay: 0.2s; }
.card:nth-child(6), .comment-item:nth-child(6) { animation-delay: 0.25s; }
.card:nth-child(7), .comment-item:nth-child(7) { animation-delay: 0.3s; }
.card:nth-child(8), .comment-item:nth-child(8) { animation-delay: 0.35s; }
.card:nth-child(9), .comment-item:nth-child(9) { animation-delay: 0.4s; }
.card:nth-child(10), .comment-item:nth-child(10) { animation-delay: 0.45s; }
.card:nth-child(11), .comment-item:nth-child(11) { animation-delay: 0.5s; }
.card:nth-child(12), .comment-item:nth-child(12) { animation-delay: 0.55s; }

/* ===== 响应式布局 ===== */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
  
  .featured-grid {
    grid-template-columns: 1fr;
  }
  
  .navbar {
    flex-direction: column;
    gap: 1rem;
    padding: 0.8rem 1rem;
  }
  
  .nav-links {
    justify-content: center;
    gap: 0.8rem;
  }
  
  .nav-links a {
    font-size: 0.85rem;
  }
  
  h1 {
    font-size: 1.8rem;
  }
  
  h2 {
    font-size: 1.4rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0.8rem;
  }
  
  .grid-events {
    grid-template-columns: 1fr;
  }
  
  .grid-people {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .featured-card {
    padding: 1rem;
  }
  
  .bg-section, .bg-platform {
    padding: 1.2rem;
    border-radius: 20px;
  }
  
  .btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .footer-links {
    gap: 1rem;
    flex-direction: column;
    align-items: center;
  }
  
  .nav-links {
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  
  .nav-links a {
    font-size: 0.8rem;
    padding: 0.3rem 0.2rem;
  }
  
  .logo a {
    font-size: 1.5rem;
  }
}

@media (max-width: 400px) {
  .grid-people {
    grid-template-columns: 1fr;
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn {
    text-align: center;
  }
}

/* ===== 暗色模式适配 ===== */
@media (prefers-color-scheme: dark) {
  body {
    background: 
      radial-gradient(ellipse at 20% 0%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
      radial-gradient(ellipse at 80% 20%, rgba(168, 85, 247, 0.08) 0%, transparent 50%),
      linear-gradient(145deg, #0a0a12 0%, #12121f 50%, #0d0d1a 100%);
  }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(26, 26, 42, 0.5);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #ec4899, #be185d);
  border-radius: 20px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #f472b6, #ec4899);
}

/* ===== 选中文本 ===== */
::selection {
  background: rgba(236, 72, 153, 0.3);
  color: #ffffff;
}

/* ===== 焦点可见性 ===== */
:focus-visible {
  outline: 2px solid #ec4899;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== 减少动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .card, .featured-card, .sidebar-card, .comment-item, .bg-section, .bg-platform {
    animation: none;
  }
}

/* ===== 文章内容 ===== */
.bg-section article h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #f0f0f8;
  font-size: 1.2rem;
  position: relative;
  padding-left: 0.8rem;
}

.bg-section article h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 18px;
  background: #ec4899;
  border-radius: 3px;
}

.bg-section article p {
  color: #d0d0e0;
  line-height: 1.8;
}

/* ===== 下载区域 ===== */
section[style*="background:#1c1c30"] {
  background: linear-gradient(135deg, rgba(28, 28, 48, 0.95), rgba(20, 20, 40, 0.9)) !important;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(45, 45, 74, 0.5);
  position: relative;
  overflow: hidden;
}

section[style*="background:#1c1c30"]::before {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.08), transparent 70%);
  pointer-events: none;
}

/* ===== 平台介绍区域 ===== */
.bg-platform p {
  max-width: 800px;
  line-height: 1.9;
}

/* ===== 热搜关键词 ===== */
.tag-cloud .tag {
  font-size: 0.8rem;
}

/* ===== 统计数字 ===== */
.sidebar-card p {
  color: #d0d0e0;
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(45, 45, 74, 0.3);
}

.sidebar-card p:last-child {
  border-bottom: none;
}

/* ===== 用户热议区域 ===== */
section[aria-label] {
  position: relative;
}

/* ===== 网格间距优化 ===== */
.grid {
  margin-bottom: 1rem;
}

/* ===== 卡片内容间距 ===== */
.card > div {
  margin-top: 0.8rem;
}

.card .badge {
  margin-right: 0.3rem;
}

/* ===== 响应式图片 ===== */
@media (max-width: 600px) {
  .card img {
    height: auto;
    max-height: 200px;
  }
  
  .featured-card img {
    max-height: 250px;
    object-fit: cover;
  }
}

/* ===== 打印样式 ===== */
@media print {
  body {
    background: white;
    color: black;
  }
  
  .navbar, footer, .btn-group, .sidebar-card {
    display: none;
  }
  
  .card, .featured-card, .bg-section, .bg-platform {
    break-inside: avoid;
    background: white;
    border: 1px solid #ddd;
  }
  
  h1, h2, h3 {
    color: black;
  }
}
```