```css
/* ============================================================
   美漫园 - 完整样式表
   风格：现代漫画英雄风格（深蓝+金黄+霓虹渐变）
   包含：渐变Banner、圆角卡片、毛玻璃、响应式、暗色模式、
         滚动动画、hover动画、数字统计动画
   ============================================================ */

/* ---------- CSS变量（主题） ---------- */
:root {
  --brand-primary: #1a365d;
  --brand-secondary: #2563eb;
  --brand-accent: #facc15;
  --brand-gradient: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #7c3aed 100%);
  --bg-body: #f7f9fc;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #e9edf2;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 16px 40px rgba(37, 99, 235, 0.15);
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 暗色模式变量 */
body.dark {
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-glass: rgba(15, 23, 42, 0.7);
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.4);
}

/* ---------- 基础重置 ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

body.dark {
  background: #0f172a;
  color: #e2e8f0;
}

img, svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ---------- 容器 ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 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-secondary), var(--brand-primary));
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-body);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-accent);
}

/* ---------- 导航 ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

body.dark header {
  background: rgba(15, 23, 42, 0.85);
  border-bottom-color: #1e293b;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1280px;
  margin: 0 auto;
  gap: 16px;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 1px;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: transform 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

body.dark .logo {
  background: linear-gradient(135deg, #93c5fd, #facc15);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}

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

.nav-links a:hover {
  color: var(--brand-secondary);
}

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

body.dark .nav-links a {
  color: #cbd5e1;
}

body.dark .nav-links a:hover {
  color: #93c5fd;
}

.menu-icon {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  border-radius: 8px;
  transition: background 0.3s;
}

.menu-icon:hover {
  background: rgba(0, 0, 0, 0.05);
}

.menu-icon span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  display: block;
  border-radius: 2px;
  transition: all 0.3s;
}

body.dark .menu-icon span {
  background: #e2e8f0;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  padding: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  border: 1px solid var(--border-color);
  border-top: none;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body.dark .mobile-nav {
  background: #1e293b;
  border-color: #334155;
}

.mobile-nav a {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 500;
  transition: all 0.3s;
  border-radius: 8px;
}

.mobile-nav a:hover {
  background: rgba(37, 99, 235, 0.1);
  padding-left: 24px;
}

body.dark .mobile-nav a {
  border-bottom-color: #334155;
}

/* ---------- 按钮 ---------- */
.btn-theme {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.btn-theme:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  border-color: var(--brand-secondary);
}

body.dark .btn-theme {
  background: #1e293b;
  color: #f8fafc;
  border-color: #334155;
}

/* ---------- 搜索框 ---------- */
.search-box {
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-box input {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all 0.3s;
  width: 160px;
  font-size: 0.9rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--brand-secondary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  width: 180px;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

body.dark .search-box input {
  background: #1e293b;
  border-color: #475569;
  color: #fff;
}

.search-box button {
  border-radius: var(--radius-full);
  padding: 8px 16px;
  background: var(--brand-gradient);
  color: #fff;
  border: none;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.search-box button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* ---------- Hero 区域 ---------- */
.hero {
  padding: 48px 0 32px;
  position: relative;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, rgba(250, 204, 21, 0.05) 100%);
  border-radius: var(--radius-lg);
  margin: 24px 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%232563eb' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
  border-radius: var(--radius-lg);
}

.hero-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-copy {
  flex: 1 1 400px;
}

.hero-copy h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
  animation: fadeInUp 0.8s ease;
}

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

body.dark .hero-copy h1 {
  background: linear-gradient(135deg, #f1f5f9, #93c5fd);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-copy p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

body.dark .hero-copy p {
  color: #cbd5e1;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  color: #1e40af;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
  animation: fadeInUp 0.8s ease 0.1s both;
}

body.dark .hero-badge {
  background: linear-gradient(135deg, #1e3a8a, #1e40af);
  color: #bfdbfe;
}

.hero-svg {
  flex: 1 1 300px;
  min-width: 240px;
  text-align: center;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

.hero-svg svg {
  width: 100%;
  max-width: 380px;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(37, 99, 235, 0.2));
}

/* ---------- 锚点导航 ---------- */
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin: 24px 0;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  padding: 16px 24px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
}

body.dark .anchor-nav {
  background: rgba(30, 41, 59, 0.8);
  border-color: #334155;
}

.anchor-nav a {
  color: var(--brand-secondary);
  font-weight: 500;
  transition: all 0.3s;
  padding: 4px 8px;
  border-radius: var(--radius-full);
}

.anchor-nav a:hover {
  background: rgba(37, 99, 235, 0.1);
  transform: translateX(4px);
}

/* ---------- 区块标题 ---------- */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin: 48px 0 24px;
  border-left: 6px solid var(--brand-secondary);
  padding-left: 16px;
  position: relative;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.1), transparent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: all 0.3s;
}

.section-title:hover {
  border-left-width: 12px;
  padding-left: 20px;
}

/* ---------- 网格布局 ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--brand-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(37, 99, 235, 0.3);
}

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--text-primary);
  position: relative;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

body.dark .card {
  background: #1e293b;
  border-color: #334155;
}

body.dark .card p {
  color: #94a3b8;
}

/* 卡片图标样式 */
.card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: inline-block;
  transition: transform 0.3s;
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
}

/* ---------- 数字统计区 ---------- */
.stats {
  display: flex;
  justify-content: space-around;
  background: var(--brand-gradient);
  padding: 40px 16px;
  border-radius: var(--radius-lg);
  margin: 32px 0;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.3);
}

.stats::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

body.dark .stats {
  background: linear-gradient(135deg, #1e293b, #334155);
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-num {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  animation: countUp 0.5s ease;
}

.stat-label {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  margin-top: 8px;
  letter-spacing: 1px;
}

body.dark .stat-label {
  color: #94a3b8;
}

/* ---------- 文章卡片 ---------- */
.article-card {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  transition: all 0.3s;
  position: relative;
  padding-left: 16px;
}

.article-card::before {
  content: '📰';
  position: absolute;
  left: -8px;
  top: 20px;
  opacity: 0;
  transition: all 0.3s;
}

.article-card:hover {
  padding-left: 32px;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.05), transparent);
  border-radius: var(--radius-md);
}

.article-card:hover::before {
  opacity: 1;
  left: 8px;
}

.article-card h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.article-card h4:hover {
  color: var(--brand-secondary);
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 8px;
}

.article-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.article-card a {
  color: var(--brand-secondary);
  font-weight: 500;
  transition: all 0.3s;
  display: inline-block;
}

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

/* ---------- FAQ ---------- */
details {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

details::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--brand-gradient);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.3s;
}

details:hover {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--shadow-card);
}

details:hover::before {
  transform: scaleY(1);
}

details[open] {
  border-color: var(--brand-secondary);
  box-shadow: var(--shadow-card);
}

details[open]::before {
  transform: scaleY(1);
}

summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.3s;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '＋';
  color: var(--brand-secondary);
  font-size: 1.2rem;
  transition: transform 0.3s;
}

details[open] summary::after {
  transform: rotate(45deg);
}

summary:hover {
  color: var(--brand-secondary);
}

details p {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body.dark details {
  background: #1e293b;
  border-color: #334155;
}

/* ---------- HowTo ---------- */
.howto-card {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(250, 204, 21, 0.05));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.howto-card h3 {
  color: var(--brand-secondary);
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.howto-card p {
  margin-bottom: 16px;
  line-height: 1.8;
  position: relative;
  padding-left: 24px;
}

.howto-card p::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--brand-accent);
  font-weight: bold;
}

.howto-card strong {
  color: var(--brand-secondary);
}

/* ---------- 页脚 ---------- */
footer {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #cbd5e1;
  padding: 48px 0 24px;
  margin-top: 64px;
  position: relative;
  overflow: hidden;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 1;
}

.footer-grid h4 {
  color: #f8fafc;
  margin-bottom: 16px;
  font-size: 1.1rem;
  position: relative;
  padding-bottom: 8px;
}

.footer-grid h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--brand-accent);
}

.footer-grid a {
  color: #94a3b8;
  display: block;
  margin: 8px 0;
  transition: all 0.3s;
  padding-left: 0;
}

.footer-grid a:hover {
  color: #f8fafc;
  padding-left: 8px;
  transform: translateX(4px);
}

.copyright {
  border-top: 1px solid #1e293b;
  margin-top: 32px;
  padding-top: 24px;
  text-align: center;
  color: #64748b;
  font-size: 0.9rem;
}

/* ---------- 返回顶部 ---------- */
#backTop {
  position: fixed;
  bottom: 40px;
  right: 30px;
  background: var(--brand-gradient);
  color: #fff;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  border: none;
  z-index: 1001;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

#backTop.show {
  opacity: 1;
  visibility: visible;
}

#backTop:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.5);
}

/* ---------- 动画效果 ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 卡片延迟动画 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-copy h1 {
    font-size: 2.4rem;
  }
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
  
  .menu-icon {
    display: flex;
  }
  
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .search-box {
    display: none;
  }
  
  .hero {
    padding: 32px 0 24px;
  }
  
  .hero-copy h1 {
    font-size: 2rem;
  }
  
  .stats {
    flex-wrap: wrap;
    gap: 16px;
    padding: 32px 16px;
  }
  
  .stat-num {
    font-size: 2.5rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .hero-copy h1 {
    font-size: 1.8rem;
  }
  
  .hero-copy p {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.6rem;
  }
  
  .nav-wrap {
    padding: 12px 16px;
  }
  
  .logo {
    font-size: 1.5rem;
  }
  
  .anchor-nav {
    border-radius: var(--radius-md);
    padding: 12px;
  }
  
  .stats {
    flex-direction: column;
    align-items: center;
  }
  
  .stat-item {
    margin-bottom: 16px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  #backTop {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }
  
  .card {
    padding: 20px;
  }
  
  .howto-card {
    padding: 24px;
  }
}

/* ---------- 打印样式 ---------- */
@media print {
  header,
  footer,
  #backTop,
  .search-box,
  .btn-theme,
  .menu-icon,
  .mobile-nav {
    display: none !important;
  }
  
  body {
    background: #fff;
    color: #000;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}

/* ---------- 无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 选中文本样式 ---------- */
::selection {
  background: var(--brand-secondary);
  color: #fff;
}

/* ---------- 聚焦状态 ---------- */
:focus-visible {
  outline: 3px solid var(--brand-secondary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 滚动动画 ---------- */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* 交错动画 */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* ---------- 悬浮粒子效果 ---------- */
.hero-svg::after {
  content: '✦';
  position: absolute;
  font-size: 1.5rem;
  color: var(--brand-accent);
  animation: twinkle 2s ease-in-out infinite;
}

@keyframes twinkle {
  0%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* ---------- 渐变边框卡片 ---------- */
.gradient-border {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1px;
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  padding: 1px;
  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;
  transition: opacity 0.3s;
}

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

/* 完成 */
```