```css
/* ==========================================================
   蓝莓视频 - 精品影视短视频
   网站: jgvmkj.com
   设计风格: 现代影视质感 + 温暖蓝紫渐变
   说明: 完整CSS样式，支持亮/暗双主题、响应式、动画
   ========================================================== */

/* ---------- CSS变量与主题切换 ---------- */
:root {
  /* 品牌色（影视感蓝紫渐变） */
  --brand-primary: #4F46E5;
  --brand-secondary: #7C3AED;
  --brand-accent: #EC4899;
  --brand-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #EC4899 100%);

  /* 亮色主题 */
  --bg-body: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-nav: rgba(255, 255, 255, 0.75);
  --bg-footer: #1E1B3A;
  --bg-hero: linear-gradient(135deg, #EEF2FF 0%, #FAE8FF 100%);
  --bg-btn: var(--brand-gradient);
  --bg-tag: #E0E7FF;
  --bg-code: #F1F5F9;

  /* 文本 */
  --text-primary: #1E293B;
  --text-secondary: #475569;
  --text-heading: #0F172A;
  --text-on-dark: #F1F5F9;
  --text-link: #4F46E5;
  --text-btn: #FFFFFF;

  /* 边框与分割线 */
  --border-color: #E2E8F0;
  --border-light: #F1F5F9;

  /* 阴影与毛玻璃 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-brand: 0 8px 24px rgba(79, 70, 229, 0.25);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.5);

  /* 间距 */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-full: 9999px;

  /* 过渡 */
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  /* 容器宽度 */
  --container-max: 1200px;
}

/* 暗色主题变量 */
[data-theme="dark"] {
  --bg-body: #0B0F1A;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.8);
  --bg-nav: rgba(15, 23, 42, 0.85);
  --bg-footer: #0B0F1A;
  --bg-hero: linear-gradient(135deg, #1E1B3A 0%, #2D1B4E 100%);
  --bg-tag: #312E81;
  --bg-code: #1E293B;

  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-heading: #F8FAFC;
  --text-on-dark: #E2E8F0;
  --text-link: #A5B4FC;
  --text-btn: #FFFFFF;

  --border-color: #334155;
  --border-light: #1E293B;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4);
  --shadow-brand: 0 8px 24px rgba(99, 102, 241, 0.4);
  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-border: rgba(148, 163, 184, 0.2);
}

/* ---------- 基础重置与全局样式 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-body);
  background-image: 
    radial-gradient(at 20% 20%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
    radial-gradient(at 80% 0%, rgba(236, 72, 153, 0.05) 0px, transparent 50%);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.75;
  transition: background-color 0.4s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* 为暗色模式平滑过渡 */
body, .nav-bar, .card, .hero, .footer, .faq-item, .tag {
  transition: background-color 0.35s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-body);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--brand-primary), var(--brand-secondary));
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-body);
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--brand-secondary), var(--brand-accent));
}

/* ---------- 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  margin: 2.5rem 0 1.25rem;
  position: relative;
  padding-bottom: 0.75rem;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--brand-gradient);
}

h3 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  margin: 1.5rem 0 0.75rem;
}

h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-heading);
}

p {
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  font-size: 1rem;
  line-height: 1.8;
}

a {
  color: var(--text-link);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease, text-decoration 0.2s ease;
}

a:hover {
  color: var(--brand-accent);
  text-decoration: underline;
}

ul, ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

li {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

strong {
  font-weight: 700;
  color: var(--text-heading);
}

/* 选中文本 */
::selection {
  background: var(--brand-primary);
  color: white;
}

/* ---------- 布局容器 ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
}

/* ---------- 导航栏 ---------- */
.nav-bar {
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.85rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  box-shadow: var(--shadow-sm);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
  cursor: pointer;
  transition: transform 0.3s ease;
}

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

.menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.menu a {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: 0.35rem 0;
  transition: color 0.25s ease;
}

.menu a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-gradient);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.menu a:hover {
  color: var(--brand-primary);
  text-decoration: none;
}

.menu a:hover::before {
  width: 100%;
}

/* 主题切换按钮与搜索 */
.theme-toggle, .search-icon {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.45rem 1.2rem;
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.theme-toggle:hover, .search-icon:hover {
  background: var(--brand-gradient);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-brand);
  transform: translateY(-2px);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.8rem;
  font-size: 1.3rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.mobile-menu-btn:hover {
  background: var(--brand-gradient);
  color: white;
}

/* ---------- Hero区域 ---------- */
.hero {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 4rem) clamp(1.5rem, 4vw, 3rem);
  margin: 2rem 0 3rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  line-height: 1.2;
  position: relative;
  z-index: 1;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.15rem);
  max-width: 800px;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
  line-height: 1.9;
}

/* ---------- 卡片网格 ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
  margin: 2rem 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  margin: 2rem 0;
}

/* 卡片通用样式 */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

/* 卡片顶部渐变线条 */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-lg), var(--shadow-brand);
  border-color: rgba(99, 102, 241, 0.3);
}

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

.card h3, .card h4 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.card p {
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.card a {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.card a::after {
  content: '→';
  transition: transform 0.2s ease;
}

.card a:hover::after {
  transform: translateX(4px);
}

/* 卡片样式变体：带图标的服务卡片 */
.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--brand-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.25rem;
  color: white;
  box-shadow: var(--shadow-brand);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  background: var(--brand-gradient);
  color: var(--text-btn);
  padding: 0.75rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
  box-shadow: var(--shadow-brand);
  text-align: center;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #7C3AED, #EC4899);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(99, 102, 241, 0.4);
  color: white;
  text-decoration: none;
}

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

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  box-shadow: none;
}

.btn-secondary:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  box-shadow: var(--shadow-md);
}

/* ---------- FAQ样式 ---------- */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0.5rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(99, 102, 241, 0.3);
}

.faq-question {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-heading);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  transition: color 0.3s ease;
  font-family: inherit;
}

.faq-question:hover {
  color: var(--brand-primary);
}

.faq-question span {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-answer {
  padding: 0 0 1.25rem;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px dashed var(--border-color);
  margin-top: 0.5rem;
  padding-top: 1rem;
  animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-footer);
  color: var(--text-on-dark);
  padding: 3rem 1.5rem 1.5rem;
  margin-top: 4rem;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--brand-gradient);
}

.footer a {
  color: #A5B4FC;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: #E0E7FF;
  text-decoration: underline;
}

.footer p {
  color: var(--text-on-dark);
  opacity: 0.9;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin: 1.75rem 0;
  font-size: 0.95rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  opacity: 0.85;
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  background: var(--bg-tag);
  color: var(--text-link);
  padding: 0.25rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition);
}

.tag:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-sm);
}

/* ---------- 表格 ---------- */
.table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table th {
  background: var(--bg-surface);
  color: var(--text-heading);
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 2px solid var(--border-color);
  font-weight: 700;
}

.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover td {
  background: rgba(99, 102, 241, 0.04);
}

/* ---------- 回到顶部按钮 ---------- */
.back-to-top {
  position: fixed;
  bottom: 2.5rem;
  right: 2.5rem;
  background: var(--brand-gradient);
  color: white;
  border-radius: 50%;
  width: 3.25rem;
  height: 3.25rem;
  font-size: 1.5rem;
  border: none;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-brand);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.5);
}

/* ---------- 图片占位 ---------- */
.svg-placeholder {
  background: linear-gradient(135deg, #E0E7FF, #FAE8FF);
  border-radius: var(--radius-lg);
  width: 100%;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-weight: 700;
  font-size: 1.1rem;
  border: 2px dashed var(--border-color);
  transition: var(--transition);
}

.svg-placeholder:hover {
  border-color: var(--brand-primary);
  background: linear-gradient(135deg, #C7D2FE, #FCE7F3);
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画辅助 */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }

/* ---------- 分割线与区块 ---------- */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
  margin: 3rem 0;
  border: none;
}

/* 图片圆角 */
.rounded-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* 代码块风格 */
code {
  background: var(--bg-code);
  padding: 0.2em 0.4em;
  border-radius: 0.3rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.9em;
  color: var(--brand-secondary);
}

pre {
  background: var(--bg-code);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 768px) {
  .nav-bar {
    padding: 0.75rem 1rem;
    gap: 0.75rem;
  }

  .menu {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0.25rem;
    padding: 0.75rem 0;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
  }

  .menu.open {
    display: flex;
    animation: fadeIn 0.3s ease;
  }

  .menu a {
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
  }

  .menu a:hover {
    background: rgba(99, 102, 241, 0.1);
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero {
    padding: 2rem 1.25rem;
    margin: 1.5rem 0 2rem;
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .card {
    padding: 1.5rem;
  }

  .back-to-top {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 2.75rem;
    height: 2.75rem;
    font-size: 1.25rem;
  }

  .footer-links {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .container {
    padding: 0 1rem;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .theme-toggle, .search-icon {
    padding: 0.35rem 0.9rem;
    font-size: 0.85rem;
  }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
  .nav-bar {
    flex-wrap: wrap;
  }

  .logo {
    font-size: 1.25rem;
  }

  .theme-toggle, .search-icon {
    padding: 0.3rem 0.7rem;
    font-size: 0.8rem;
  }

  .btn {
    padding: 0.65rem 1.5rem;
    font-size: 0.9rem;
  }
}

/* ---------- 动画与特效 ---------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* 渐变边框卡片 */
.gradient-border {
  position: relative;
  background: var(--bg-card);
  border: none;
  z-index: 1;
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: var(--brand-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.3;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.gradient-border:hover::before {
  opacity: 1;
}

/* 毛玻璃卡片 */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* 媒体元素通用样式 */
img, video {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

iframe {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: none;
  width: 100%;
}

/* 链接列表样式 */
.link-list {
  list-style: none;
  padding-left: 0;
}

.link-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-light);
}

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

/* 时间标签 */
time {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

/* 引用块 */
blockquote {
  border-left: 4px solid var(--brand-primary);
  padding: 0.75rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
}

/* 暗色模式微调 */
[data-theme="dark"] .hero {
  background: linear-gradient(135deg, rgba(30, 27, 58, 0.8), rgba(45, 27, 78, 0.6));
  border-color: rgba(148, 163, 184, 0.15);
}

[data-theme="dark"] .tag {
  background: rgba(99, 102, 241, 0.2);
  color: #A5B4FC;
}

[data-theme="dark"] .svg-placeholder {
  background: linear-gradient(135deg, #1E1B3A, #2D1B4E);
  border-color: #334155;
  color: #A5B4FC;
}

[data-theme="dark"] .faq-question:hover {
  color: #A5B4FC;
}

[data-theme="dark"] .menu a:hover {
  background: rgba(99, 102, 241, 0.15);
}

/* 减少动态效果偏好 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* 打印样式 */
@media print {
  .nav-bar, .back-to-top, .footer {
    display: none;
  }
  body {
    background: white;
    color: black;
  }
  h1 {
    -webkit-text-fill-color: black;
    background: none;
  }
}
```