```css
/* ========== 51视频漫画 flfbo.cn 主样式 ========== */
/* 全局变量与重置 */
:root {
  --primary: #7C5CFC;
  --primary-light: #9B8CFF;
  --primary-dark: #4A4AF0;
  --accent: #FF6B9D;
  --accent-2: #FFB86B;
  --bg-page: #F8F4FF;
  --bg-card: #FFFFFF;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-sidebar: #FFFFFF;
  --text-main: #1A1A2E;
  --text-sub: #2D2D44;
  --text-light: #5A5A7A;
  --border-soft: rgba(124, 92, 252, 0.15);
  --border-strong: #D9CCFF;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(124, 92, 252, 0.12);
  --shadow-lg: 0 16px 40px rgba(74, 74, 240, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-main: linear-gradient(135deg, #4A4AF0 0%, #7C5CFC 50%, #B06AB3 100%);
  --gradient-accent: linear-gradient(135deg, #FF6B9D, #FFB86B);
}

/* 暗色模式 */
[data-theme="dark"] {
  --bg-page: #0F0F1A;
  --bg-card: #1A1A2E;
  --bg-glass: rgba(26, 26, 46, 0.75);
  --bg-sidebar: #1A1A2E;
  --text-main: #EAE6FF;
  --text-sub: #B8B2D9;
  --text-light: #8A84B0;
  --border-soft: rgba(124, 92, 252, 0.25);
  --border-strong: #3A3560;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
}

/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-page);
}
::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* 通用容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 链接 */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s, text-decoration 0.2s;
}
a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* 图片 */
img {
  background: var(--border-soft);
  max-width: 100%;
  display: block;
}

/* ========== 顶部导航 ========== */
.site-header {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 2px solid var(--border-soft);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(124, 92, 252, 0.08);
}

.header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* Logo */
.logo h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 1px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: gradientFlow 6s ease infinite;
  position: relative;
  display: inline-block;
}

.logo h1::after {
  content: '✦';
  position: absolute;
  top: -6px;
  right: -22px;
  font-size: 1rem;
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  animation: twinkle 2s ease-in-out infinite;
}

/* 导航链接 */
.nav-links {
  display: flex;
  gap: 1.8rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-main);
  font-weight: 600;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: width 0.3s;
}

.nav-links a:hover {
  color: var(--primary);
  border-bottom-color: transparent;
  text-decoration: none;
}
.nav-links a:hover::after {
  width: 100%;
}

/* ========== 区块标题 ========== */
h2 {
  color: var(--text-main);
  font-size: 1.8rem;
  margin: 30px 0 10px 0;
  padding-left: 16px;
  border-left: 8px solid var(--primary);
  background: linear-gradient(to right, var(--primary-light), transparent);
  display: inline-block;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.4;
}

h3 {
  color: var(--text-main);
  margin: 12px 0 6px;
  font-weight: 700;
}

/* ========== 卡片网格 ========== */
.grid-card {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

/* 漫画卡片 */
.comic-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 12px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-soft);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease both;
}

.comic-card::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 0.5s;
  pointer-events: none;
}

.comic-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.comic-card:hover::before {
  left: 100%;
}

.comic-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--border-soft);
  transition: transform 0.4s ease;
}

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

.comic-card h3 {
  font-size: 1.1rem;
  margin-top: 8px;
  font-weight: 700;
}

.comic-card p {
  color: var(--text-sub);
  font-size: 0.9rem;
  margin: 2px 0;
}

/* 标签 */
.badge {
  display: inline-block;
  background: var(--gradient-main);
  color: #FFFFFF;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
  margin-top: 4px;
  box-shadow: 0 2px 8px rgba(124, 92, 252, 0.3);
}

/* ========== 布局 ========== */
.layout {
  display: flex;
  gap: 30px;
  margin-top: 20px;
}

.main-content {
  flex: 3;
  min-width: 0;
}

/* 侧边栏 */
.sidebar {
  flex: 1;
  background: var(--bg-sidebar);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border-soft);
  height: fit-content;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: var(--bg-glass);
  position: sticky;
  top: 80px;
}

.sidebar h2 {
  color: var(--text-main);
  border-left: 6px solid var(--primary);
  padding-left: 12px;
  margin: 20px 0 12px 0;
  font-size: 1.4rem;
  background: none;
  border-radius: 0;
}

.sidebar h2:first-child {
  margin-top: 0;
}

.sidebar ul {
  list-style: none;
}

.sidebar li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-strong);
  color: var(--text-main);
  font-weight: 500;
  transition: all 0.2s;
}

.sidebar li:hover {
  padding-left: 8px;
  color: var(--primary);
}

.sidebar li span {
  float: right;
  color: var(--primary);
  font-weight: 700;
}

/* 统计框 */
.stats-box {
  background: linear-gradient(135deg, rgba(124, 92, 252, 0.08), rgba(255, 107, 157, 0.08));
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 15px 0;
  border: 1px solid var(--border-soft);
}

.stats-box p {
  color: var(--text-main);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
}

.stats-box p span {
  color: var(--primary);
  font-weight: 800;
}

/* ========== 介绍文本 ========== */
.intro-text {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s;
}

.intro-text:hover {
  box-shadow: var(--shadow-md);
}

.intro-text p {
  margin-bottom: 16px;
}

.intro-text h3 {
  color: var(--primary);
  margin-top: 20px;
  margin-bottom: 8px;
  font-size: 1.2rem;
}

/* ========== 评论区块 ========== */
.comment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.comment-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid var(--border-soft);
  transition: all 0.3s ease;
  animation: fadeInUp 0.5s ease both;
}

.comment-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.comment-item strong {
  color: var(--primary);
  font-weight: 700;
}

.comment-item time {
  color: var(--text-light);
  font-size: 0.8rem;
  margin-left: 8px;
}

.comment-item p {
  margin-top: 8px;
  color: var(--text-main);
}

/* ========== 角色卡片 ========== */
.char-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
  border: 1px solid var(--border-soft);
  transition: all var(--transition);
  animation: fadeInUp 0.5s ease both;
}

.char-card:hover {
  transform: translateY(-6px) rotate(1deg);
  box-shadow: var(--shadow-lg);
}

.char-card img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--primary-light);
  margin: 0 auto;
  transition: transform 0.4s ease;
}

.char-card:hover img {
  transform: scale(1.08);
}

.char-card h4 {
  color: var(--text-main);
  margin: 10px 0 4px;
  font-weight: 700;
}

.char-card p {
  color: var(--text-sub);
  font-size: 0.9rem;
}

/* ========== 按钮 ========== */
.btn-group {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  margin: 20px 0;
}

.btn {
  background: var(--gradient-main);
  color: white;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  border: 2px solid transparent;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(124, 92, 252, 0.3);
  position: relative;
  overflow: hidden;
}

.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: left 0.4s;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(74, 74, 240, 0.4);
  text-decoration: none;
  color: white;
}

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
  box-shadow: 0 8px 25px rgba(124, 92, 252, 0.3);
}

/* ========== 底部 ========== */
.footer {
  background: var(--bg-card);
  border-top: 2px solid var(--border-soft);
  margin-top: 40px;
  padding: 30px 0;
  color: var(--text-main);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 20px;
}

.footer-links a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.2s;
}

.footer-links a:hover {
  text-decoration: underline;
  color: var(--primary-dark);
}

.copyright {
  font-size: 0.9rem;
  color: var(--text-light);
}

.copyright p {
  margin-bottom: 4px;
}

/* ========== 渐变Banner效果 ========== */
.site-header::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-main);
  animation: gradientFlow 4s ease infinite;
  background-size: 200% auto;
}

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

@keyframes gradientFlow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes twinkle {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(0.8);
  }
}

/* 滚动动画 - 元素进入视口时 */
@media (prefers-reduced-motion: no-preference) {
  .comic-card, .char-card, .comment-item, .intro-text, .sidebar {
    animation: fadeInUp 0.6s ease both;
  }
  
  /* 延迟动画 */
  .comic-card:nth-child(1) { animation-delay: 0.1s; }
  .comic-card:nth-child(2) { animation-delay: 0.15s; }
  .comic-card:nth-child(3) { animation-delay: 0.2s; }
  .comic-card:nth-child(4) { animation-delay: 0.25s; }
  .comic-card:nth-child(5) { animation-delay: 0.3s; }
  .comic-card:nth-child(6) { animation-delay: 0.35s; }
  .comic-card:nth-child(7) { animation-delay: 0.4s; }
  .comic-card:nth-child(8) { animation-delay: 0.45s; }
  .comic-card:nth-child(9) { animation-delay: 0.5s; }
  .comic-card:nth-child(10) { animation-delay: 0.55s; }
  .comic-card:nth-child(11) { animation-delay: 0.6s; }
  .comic-card:nth-child(12) { animation-delay: 0.65s; }
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .layout {
    flex-direction: column;
  }
  
  .sidebar {
    position: static;
    width: 100%;
  }
  
  h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 800px) {
  .header-flex {
    flex-direction: column;
    text-align: center;
  }
  
  .nav-links {
    justify-content: center;
    gap: 1rem;
  }
  
  .grid-card {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
  }
  
  .comment-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  
  .btn-group {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
  
  h2 {
    font-size: 1.3rem;
    padding-left: 12px;
    border-left-width: 6px;
  }
  
  .container {
    padding: 0 12px;
  }
  
  .logo h1 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .grid-card {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  
  .comic-card {
    padding: 8px;
  }
  
  .comic-card h3 {
    font-size: 0.9rem;
  }
  
  .comic-card p {
    font-size: 0.75rem;
  }
  
  .intro-text {
    padding: 16px;
  }
  
  .char-card img {
    width: 90px;
    height: 90px;
  }
}

/* ========== 暗色模式自动切换 ========== */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-page: #0F0F1A;
    --bg-card: #1A1A2E;
    --bg-glass: rgba(26, 26, 46, 0.75);
    --bg-sidebar: #1A1A2E;
    --text-main: #EAE6FF;
    --text-sub: #B8B2D9;
    --text-light: #8A84B0;
    --border-soft: rgba(124, 92, 252, 0.25);
    --border-strong: #3A3560;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  }
  
  .comic-card::before {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  }
  
  .stats-box {
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.15), rgba(255, 107, 157, 0.15));
  }
}

/* ========== 悬停动画增强 ========== */
.comic-card, .char-card, .comment-item {
  will-change: transform;
}

/* 卡片悬浮光效 */
.comic-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(124, 92, 252, 0.1), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.comic-card:hover::after {
  opacity: 1;
}

/* 侧边栏列表项动画 */
.sidebar li {
  position: relative;
  overflow: hidden;
}

.sidebar li::before {
  content: '▸';
  position: absolute;
  left: -15px;
  color: var(--primary);
  transition: left 0.3s;
}

.sidebar li:hover::before {
  left: 0;
}

/* 底部链接装饰 */
.footer-links a {
  position: relative;
  padding: 4px 0;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width 0.3s;
}

.footer-links a:hover::after {
  width: 100%;
}

/* 统计数字动画 */
.stats-box p span {
  display: inline-block;
  transition: transform 0.3s;
}

.stats-box p:hover span {
  transform: scale(1.1);
  color: var(--accent);
}

/* 图片加载占位动画 */
img {
  position: relative;
  overflow: hidden;
}

img::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  100% {
    left: 100%;
  }
}

/* 打印样式优化 */
@media print {
  .site-header, .footer, .sidebar, .btn-group {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .comic-card, .char-card, .comment-item, .intro-text {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}
```