```css
/* ========== 亲亲漫画 · 全局样式 ========== */
:root {
  --primary: #ff6b8a;
  --primary-dark: #d43f64;
  --primary-light: #ffb3c1;
  --primary-bg: #fff5f7;
  --text-main: #2d2a2a;
  --text-sub: #666;
  --text-light: #999;
  --card-bg: #ffffff;
  --card-shadow: 0 8px 24px rgba(255, 107, 138, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
}

/* 暗色模式变量 */
.dark-mode {
  --primary-bg: #1f1b1b;
  --text-main: #eee;
  --text-sub: #bbb;
  --text-light: #888;
  --card-bg: #2d2a2a;
  --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  --glass-bg: rgba(45, 42, 42, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
  background: var(--primary-bg);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

body::selection {
  background: var(--primary);
  color: #fff;
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 头部导航 ========== */
header {
  background: linear-gradient(135deg, var(--primary) 0%, #ff8fab 50%, var(--primary) 100%);
  color: #fff;
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(20px);
  background: linear-gradient(135deg, rgba(255, 107, 138, 0.95), rgba(255, 143, 171, 0.9));
  box-shadow: 0 4px 30px rgba(255, 107, 138, 0.25);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo a {
  color: #fff;
  font-size: 1.9rem;
  font-weight: 900;
  text-decoration: none;
  letter-spacing: 2px;
  text-shadow: 2px 2px 8px rgba(212, 63, 100, 0.4);
  transition: var(--transition);
  display: inline-block;
  position: relative;
}

.logo a::after {
  content: '💕';
  font-size: 1rem;
  position: absolute;
  top: -8px;
  right: -20px;
  animation: floatHeart 2s ease-in-out infinite;
}

@keyframes floatHeart {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.logo span {
  font-size: 0.8rem;
  font-weight: 400;
  display: block;
  margin-top: -2px;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.85);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 8px;
  flex-wrap: wrap;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 30px;
  transition: var(--transition);
  font-size: 0.95rem;
  position: relative;
  background: transparent;
}

nav a:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

nav a.active {
  background: rgba(255, 255, 255, 0.3);
  font-weight: 600;
}

.search-box {
  display: flex;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50px;
  overflow: hidden;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.search-box:focus-within {
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.4);
  transform: scale(1.02);
}

.search-box input {
  border: none;
  padding: 10px 20px;
  width: 200px;
  font-size: 0.9rem;
  outline: none;
  background: transparent;
  color: var(--text-main);
}

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

.search-box button {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  color: #fff;
  padding: 10px 20px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.search-box button:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

/* ========== Hero区域 ========== */
.hero {
  background: linear-gradient(145deg, #ffe3ee 0%, #ffd1dc 30%, #ffb3c1 70%, #ff9eb2 100%);
  padding: 60px 0;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  animation: heroGlow 6s ease-in-out infinite;
}

@keyframes heroGlow {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.1); opacity: 1; }
}

.hero-content {
  display: flex;
  align-items: center;
  gap: 50px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.hero-text {
  flex: 1;
  min-width: 300px;
}

.hero-text h1 {
  font-size: 3rem;
  color: #a12b4a;
  margin-bottom: 16px;
  font-weight: 900;
  background: linear-gradient(135deg, #a12b4a, #ff6b8a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease;
}

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

.hero-text p {
  font-size: 1.15rem;
  color: #5c2a38;
  max-width: 700px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-stats {
  display: flex;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.stat-item {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 18px 28px;
  border-radius: 20px;
  text-align: center;
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(255, 107, 138, 0.15);
}

.stat-item:hover {
  transform: translateY(-5px) scale(1.03);
  box-shadow: 0 15px 40px rgba(255, 107, 138, 0.25);
}

.stat-item .num {
  font-size: 2.2rem;
  font-weight: 900;
  color: #a12b4a;
  display: block;
  line-height: 1.2;
}

.stat-item br + span {
  font-size: 0.9rem;
  color: var(--text-sub);
}

/* Banner轮播 */
.banner-slider {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(161, 43, 74, 0.3);
  flex: 1;
  min-width: 280px;
  transform: rotate(-2deg);
  transition: transform 0.3s ease;
}

.banner-slider:hover {
  transform: rotate(0deg) scale(1.02);
}

.slide-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.slide {
  min-width: 100%;
}

.slide svg {
  width: 100%;
  height: 200px;
  display: block;
  transition: var(--transition);
}

.slide svg:hover {
  filter: brightness(1.05);
}

/* ========== 网格布局 ========== */
.grid-2 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  margin: 40px 0;
}

/* ========== 卡片样式 ========== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  border: 1px solid rgba(255, 107, 138, 0.05);
  position: relative;
  overflow: hidden;
}

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

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

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(255, 107, 138, 0.15);
}

.card h2 {
  font-size: 1.8rem;
  border-left: 6px solid var(--primary);
  padding-left: 16px;
  margin-bottom: 24px;
  color: var(--text-main);
  font-weight: 800;
  position: relative;
}

.card h2::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 16px;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  border-radius: 3px;
}

.card h3 {
  font-size: 1.3rem;
  margin: 24px 0 12px;
  color: var(--primary-dark);
  font-weight: 700;
}

.card h4 {
  font-size: 1.1rem;
  color: var(--text-main);
  margin: 18px 0 8px;
  font-weight: 600;
}

.card p {
  color: var(--text-sub);
  line-height: 1.8;
}

/* ========== 文章列表 ========== */
.article-list {
  list-style: none;
}

.article-list li {
  border-bottom: 1px dashed rgba(255, 107, 138, 0.2);
  padding: 16px 8px;
  transition: var(--transition);
  border-radius: 8px;
}

.article-list li:hover {
  background: rgba(255, 107, 138, 0.05);
  padding-left: 16px;
}

.article-list li a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 500;
  font-size: 1rem;
  transition: var(--transition);
  display: inline-block;
}

.article-list li a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.article-list li .date {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-left: 10px;
  background: rgba(255, 107, 138, 0.1);
  padding: 2px 10px;
  border-radius: 20px;
}

.article-list li p {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-top: 6px;
  line-height: 1.6;
}

/* ========== FAQ样式 ========== */
.faq-item {
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 107, 138, 0.1);
  padding-bottom: 14px;
  transition: var(--transition);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 8px;
  border-radius: 10px;
  transition: var(--transition);
  font-size: 0.98rem;
  color: var(--text-main);
}

.faq-question:hover {
  background: rgba(255, 107, 138, 0.06);
}

.faq-question::after {
  content: '＋';
  font-size: 1.4rem;
  color: var(--primary);
  transition: var(--transition);
  font-weight: 300;
}

.faq-item.open .faq-question::after {
  content: '－';
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  margin-top: 8px;
  color: var(--text-sub);
  padding: 0 12px 12px;
  line-height: 1.8;
  font-size: 0.95rem;
  animation: fadeIn 0.3s ease;
}

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

.faq-item.open .faq-answer {
  display: block;
}

/* ========== HowTo步骤 ========== */
.howto-steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.howto-steps li {
  margin-bottom: 16px;
  padding: 16px 16px 16px 56px;
  position: relative;
  background: rgba(255, 107, 138, 0.04);
  border-radius: 14px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.howto-steps li:hover {
  background: rgba(255, 107, 138, 0.08);
  border-color: rgba(255, 107, 138, 0.2);
  transform: translateX(6px);
}

.howto-steps li::before {
  counter-increment: step;
  content: counter(step);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  box-shadow: 0 4px 12px rgba(255, 107, 138, 0.4);
}

.howto-steps li strong {
  color: var(--text-main);
  display: block;
  margin-bottom: 4px;
}

.howto-steps li:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 28px;
  bottom: -16px;
  width: 2px;
  height: 16px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}

/* ========== CTA区域 ========== */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, #ff8fab 50%, var(--primary) 100%);
  color: #fff;
  text-align: center;
  padding: 50px 30px;
  border-radius: 30px;
  margin: 40px 0;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(255, 107, 138, 0.3);
}

.cta::before {
  content: '💕';
  position: absolute;
  font-size: 8rem;
  opacity: 0.1;
  top: -20px;
  right: -20px;
  transform: rotate(20deg);
  animation: floatHeart 4s ease-in-out infinite;
}

.cta::after {
  content: '✨';
  position: absolute;
  font-size: 6rem;
  opacity: 0.1;
  bottom: -20px;
  left: -20px;
  transform: rotate(-20deg);
  animation: floatHeart 3s ease-in-out infinite reverse;
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: 12px;
  font-weight: 800;
  position: relative;
  z-index: 1;
}

.cta p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.cta a {
  background: #fff;
  color: var(--primary);
  padding: 14px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  display: inline-block;
  font-size: 1.1rem;
  transition: var(--transition);
  position: relative;
  z-index: 1;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.cta a:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
  background: var(--primary-bg);
}

/* ========== 页脚 ========== */
footer {
  background: linear-gradient(135deg, #2d2a2a 0%, #3d3a3a 100%);
  color: #ccc;
  padding: 50px 0 0;
  margin-top: 60px;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--primary));
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  padding-bottom: 30px;
}

.footer-grid div {
  transition: var(--transition);
}

.footer-grid h4 {
  color: #fff;
  margin-bottom: 20px;
  font-size: 1.1rem;
  position: relative;
  padding-bottom: 10px;
}

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

.footer-grid p {
  color: #aaa;
  line-height: 2;
  font-size: 0.95rem;
}

.footer-grid a {
  color: #aaa;
  display: block;
  text-decoration: none;
  margin-bottom: 10px;
  transition: var(--transition);
  font-size: 0.95rem;
  padding: 4px 0;
}

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

.copyright {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 25px 0;
  margin-top: 20px;
  background: rgba(0, 0, 0, 0.2);
}

.copyright p {
  color: #999;
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ========== 返回顶部按钮 ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  font-size: 1.3rem;
  box-shadow: 0 8px 25px rgba(255, 107, 138, 0.4);
  transition: var(--transition);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
}

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

.back-to-top:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 12px 35px rgba(255, 107, 138, 0.5);
}

/* ========== 暗黑模式切换按钮 ========== */
.dark-mode-btn {
  position: fixed;
  bottom: 90px;
  right: 30px;
  background: linear-gradient(135deg, #333, #555);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  font-size: 1.3rem;
  z-index: 999;
  transition: var(--transition);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dark-mode-btn:hover {
  transform: rotate(45deg) scale(1.1);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4);
}

/* ========== 暗色模式适配 ========== */
.dark-mode {
  background: #1f1b1b;
  color: #eee;
}

.dark-mode header {
  background: rgba(45, 42, 42, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.dark-mode .hero {
  background: linear-gradient(145deg, #2d2a2a, #1f1b1b);
}

.dark-mode .hero-text h1 {
  background: linear-gradient(135deg, #ffb3c1, #ff6b8a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.dark-mode .hero-text p {
  color: #bbb;
}

.dark-mode .stat-item {
  background: rgba(45, 42, 42, 0.8);
  border-color: rgba(255, 255, 255, 0.1);
}

.dark-mode .stat-item .num {
  color: var(--primary-light);
}

.dark-mode .card {
  background: #2d2a2a;
  border-color: rgba(255, 255, 255, 0.05);
}

.dark-mode .card h2,
.dark-mode .card h3 {
  color: var(--primary-light);
}

.dark-mode .card h4 {
  color: #ddd;
}

.dark-mode .card p {
  color: #aaa;
}

.dark-mode .article-list li {
  border-color: rgba(255, 255, 255, 0.1);
}

.dark-mode .article-list li a {
  color: #ddd;
}

.dark-mode .article-list li a:hover {
  color: var(--primary-light);
}

.dark-mode .faq-question {
  color: #eee;
}

.dark-mode .faq-question:hover {
  background: rgba(255, 255, 255, 0.05);
}

.dark-mode .faq-answer {
  color: #bbb;
}

.dark-mode .howto-steps li {
  background: rgba(255, 255, 255, 0.03);
}

.dark-mode .howto-steps li:hover {
  background: rgba(255, 255, 255, 0.06);
}

.dark-mode .howto-steps li strong {
  color: #eee;
}

.dark-mode .cta {
  background: linear-gradient(135deg, #d43f64, #ff6b8a);
}

.dark-mode .search-box {
  background: rgba(255, 255, 255, 0.9);
}

.dark-mode .search-box input {
  color: #333;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .header-flex {
    flex-direction: column;
    gap: 12px;
  }
  
  nav ul {
    justify-content: center;
    gap: 4px;
  }
  
  nav a {
    padding: 6px 12px;
    font-size: 0.9rem;
  }
  
  .search-box {
    width: 100%;
    max-width: 400px;
  }
  
  .search-box input {
    flex: 1;
    width: auto;
  }
  
  .hero {
    padding: 40px 0;
  }
  
  .hero-content {
    flex-direction: column;
    gap: 30px;
  }
  
  .hero-text h1 {
    font-size: 2.2rem;
  }
  
  .hero-text p {
    font-size: 1rem;
  }
  
  .hero-stats {
    gap: 12px;
  }
  
  .stat-item {
    padding: 14px 20px;
    flex: 1;
    min-width: 100px;
  }
  
  .stat-item .num {
    font-size: 1.8rem;
  }
  
  .banner-slider {
    width: 100%;
    transform: none;
  }
  
  .card {
    padding: 20px;
    border-radius: 20px;
  }
  
  .card h2 {
    font-size: 1.5rem;
  }
  
  .cta {
    padding: 40px 20px;
    border-radius: 24px;
  }
  
  .cta h2 {
    font-size: 1.6rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 25px;
    text-align: center;
  }
  
  .footer-grid h4::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .footer-grid a:hover {
    padding-left: 0;
    transform: translateY(-2px);
  }
  
  .back-to-top,
  .dark-mode-btn {
    width: 42px;
    height: 42px;
    font-size: 1rem;
    bottom: 20px;
    right: 20px;
  }
  
  .dark-mode-btn {
    bottom: 70px;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 1.8rem;
  }
  
  .hero-stats {
    flex-direction: column;
  }
  
  .stat-item {
    width: 100%;
  }
  
  .article-list li .date {
    display: block;
    margin-left: 0;
    margin-top: 4px;
    width: fit-content;
  }
  
  .faq-question {
    font-size: 0.9rem;
  }
  
  .howto-steps li {
    padding: 14px 14px 14px 48px;
  }
  
  .howto-steps li::before {
    width: 30px;
    height: 30px;
    left: 10px;
    font-size: 0.9rem;
  }
}

/* ========== 动画与交互增强 ========== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* 滚动进入动画 */
.card,
.hero-content,
.cta {
  animation: fadeInUp 0.6s ease both;
}

.card:nth-child(2) {
  animation-delay: 0.1s;
}

/* 悬浮微交互 */
.card .article-list li a::before {
  content: '→ ';
  opacity: 0;
  margin-right: -12px;
  transition: var(--transition);
  color: var(--primary);
}

.card .article-list li a:hover::before {
  opacity: 1;
  margin-right: 4px;
}

/* 按钮波纹效果 */
.cta a,
.search-box button,
.back-to-top,
.dark-mode-btn {
  position: relative;
  overflow: hidden;
}

.cta a::after,
.search-box button::after,
.back-to-top::after,
.dark-mode-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease, height 0.5s ease;
}

.cta a:active::after,
.search-box button:active::after,
.back-to-top:active::after,
.dark-mode-btn:active::after {
  width: 300px;
  height: 300px;
  opacity: 0;
}

/* SVG占位符动画 */
.svg-placeholder {
  background: linear-gradient(90deg, #ffe3ea 25%, #fff0f3 50%, #ffe3ea 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* 滚动条在暗色模式下的调整 */
.dark-mode ::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #d43f64, #ff6b8a);
}

/* 打印样式 */
@media print {
  header,
  .hero,
  .banner-slider,
  .cta,
  .back-to-top,
  .dark-mode-btn,
  footer {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #eee;
  }
  
  body {
    background: #fff;
    color: #000;
  }
}
```