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

:root {
  /* 浅色主题变量 - 适配淡淡蓝色风格 */
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --bg-glass: rgba(255, 255, 255, 0.6);
  --bg-glass-hover: rgba(255, 255, 255, 0.85);
  --bg-glass-dark: rgba(0, 0, 0, 0.05);
  --border-glass: rgba(255, 255, 255, 0.8);
  --border-glass-hover: #ffffff;
  --shadow-glass: 0 8px 32px rgba(31, 38, 135, 0.08);
  --shadow-glass-hover: 0 16px 48px rgba(31, 38, 135, 0.15);
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --primary-glow: rgba(66, 153, 225, 0.5);
  --accent-color: #4299e1;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.5);
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  /* 淡淡的清新蓝色渐变 */
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
  background-size: cover;
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  padding: 1rem 0.25rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

/* 移除之前的遮罩层 */
body::after {
  display: none;
}

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

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: overlay;
}

.container {
  max-width: 1600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  padding: 0 0.5rem;
}

/* 动画定义 */
@keyframes slideUpFade {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

.search-section {
  margin: 4rem 0 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: slideUpFade 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.search-container {
  width: 100%;
  max-width: 700px;
  position: relative;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-glass);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.search-input-wrapper::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: var(--transition);
  transform: translateX(-50%);
}

.search-input-wrapper:focus-within {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-hover);
  box-shadow: 0 0 0 4px rgba(66, 153, 225, 0.15), var(--shadow-glass-hover);
  transform: translateY(-2px) scale(1.01);
}

.search-input-wrapper:focus-within::after {
  width: 100%;
}

.search-icon {
  width: 24px;
  height: 24px;
  margin-right: 1rem;
  opacity: 0.8;
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.0625rem;
  outline: none;
  padding: 0;
}

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

.search-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
  margin-left: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
  opacity: 0.8;
}

.search-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

/* 导航区域样式 */
.navigation-section {
  margin-top: 3rem;
}

.navigation-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  animation: slideUpFade 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) 0.2s forwards;
  opacity: 0;
}

.site-group {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 1.25rem 1rem;
  box-shadow: var(--shadow-glass);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.site-group::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.site-group:hover::before {
  opacity: 1;
}

.site-group:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-glass-hover);
  transform: translateY(-6px);
}

.group-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  padding: 0 0.5rem;
  letter-spacing: 0.02em;
  position: absolute;
  top: 1.2rem;
  left: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition);
  z-index: 10;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.group-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--accent-color);
  border-radius: 4px;
  flex-shrink: 0;
  box-shadow: 0 0 10px rgba(66, 153, 225, 0.4);
  transition: var(--transition);
}

.group-title::after {
  display: none;
}

.site-group:hover .group-title {
  transform: translateX(5px);
  text-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.site-group:hover .group-title::before {
  height: 24px;
  background: var(--accent-color);
  box-shadow: 0 0 15px rgba(66, 153, 225, 0.6);
}

.sites-container {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.75rem;
  overflow: visible;
  padding: 3.5rem 0.5rem 0.5rem;
  align-content: start;
}


.site-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 0.5rem;
  background: rgba(255, 255, 255, 0);
  border-radius: 16px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
}

.site-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.site-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  object-fit: contain;
  transition: var(--transition);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.1);
  padding: 4px;
}

.site-item:hover .site-icon {
  transform: scale(1.1) rotate(3deg);
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.2));
  background: rgba(255, 255, 255, 0.2);
}

.site-name {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
  font-weight: 500;
  transition: var(--transition);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

.site-item:hover .site-name {
  color: var(--text-primary);
  font-weight: 600;
  transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
  body {
    padding: 1rem 0.5rem;
  }
  
  .container {
    padding: 0 0.5rem;
  }

  .search-section {
    margin: 2rem 0;
  }

  .search-input-wrapper {
    padding: 0.875rem 1.25rem;
  }

  .sites-container {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    padding-top: 2.75rem;
  }

  .site-item {
    padding: 0.625rem 0.375rem;
    gap: 0.5rem;
  }

  .site-icon {
    width: 38px;
    height: 38px;
  }
  
  .site-name {
    font-size: 0.7rem;
  }

  .navigation-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-group {
    padding: 1.5rem;
  }
  
  .group-title {
    font-size: 0.9375rem;
    top: 0.875rem;
    left: 1.25rem;
    gap: 0.625rem;
    letter-spacing: 0.04em;
  }
  
  .group-title::before {
    width: 4px;
    height: 18px;
  }
  
  .site-group:hover .group-title::before {
    width: 5px;
  }
  
  .sites-container {
    padding-top: 2.75rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 0.75rem 0.25rem;
  }
  
  .container {
    padding: 0 0.25rem;
  }

  .sites-container {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    padding-top: 2.5rem;
  }
  
  .site-icon {
    width: 36px;
    height: 36px;
  }

  .group-title {
    font-size: 0.8125rem;
    top: 0.75rem;
    left: 0.875rem;
    gap: 0.5rem;
    letter-spacing: 0.03em;
  }
  
  .group-title::before {
    width: 3px;
    height: 16px;
  }
  
  .site-group:hover .group-title::before {
    width: 4px;
  }
  
  .sites-container {
    padding-top: 2.5rem;
  }
  
  .site-name {
    font-size: 0.7rem;
  }
  
  .site-item {
    padding: 0.5rem 0.375rem;
    gap: 0.5rem;
  }
}

/* 底部备案信息 */
.footer {
  margin-top: 4rem;
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  animation: slideUpFade 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) 0.4s forwards;
  opacity: 0;
}

.footer-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.icp-info,
.ga-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
}

.icp-info:hover,
.ga-info:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
  color: var(--text-primary);
  box-shadow: var(--shadow-glass);
}

.icp-info span,
.ga-info span {
  color: inherit;
  font-size: 0.85rem;
  white-space: nowrap;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.icp-icon,
.ga-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  object-fit: contain;
  display: block;
}

.icp-icon {
  filter: drop-shadow(0 2px 4px rgba(255, 107, 53, 0.4));
}

.ga-icon {
  filter: drop-shadow(0 2px 4px rgba(255, 215, 0, 0.4));
}

@media (max-width: 768px) {
  .footer {
    margin-top: 3rem;
    padding: 1.5rem 0;
  }

  .footer-content {
    font-size: 0.75rem;
    gap: 1.5rem;
  }

  .icp-info span,
  .ga-info span {
    font-size: 0.75rem;
  }

  .icp-icon,
  .ga-icon {
    width: 18px;
    height: 18px;
  }
}

@media (max-width: 480px) {
  .footer {
    margin-top: 2rem;
    padding: 1rem 0;
  }

  .footer-content {
    flex-direction: column;
    gap: 1rem;
  }

  .icp-info span,
  .ga-info span {
    font-size: 0.6875rem;
  }

  .icp-icon,
  .ga-icon {
    width: 16px;
    height: 16px;
  }
}