/* 全局样式重置与基础配置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-white: #FFFFFF;
  --color-light: #F5F5F5;
  --color-gray: #E0E0E0;
  --color-dark: #212121;
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--color-white);
  color: var(--color-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity var(--transition-base);
}

a:hover {
  opacity: 0.7;
}

/* 导航栏样式 */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray);
  animation: slideDown 0.6s ease;
}

/* 页面加载动画 */
@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 轮播图样式 */
.carousel-container {
  position: relative;
  width: 100%;
  height: 70vh;
  overflow: hidden;
  background: var(--color-dark);
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.carousel-slide.active {
  opacity: 1;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.carousel-caption {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 1s ease;
}

/* 趋势图块区域 */
.trend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-gray);
  animation: fadeIn 1s ease 0.3s both;
}

.trend-item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-white);
  transition: transform var(--transition-base);
}

.trend-item:hover {
  transform: scale(1.05);
  z-index: 10;
}

.trend-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.trend-item:hover img {
  transform: scale(1.1);
}

.trend-overlay {
  position: absolute;
  inset: 0;
  background: rgba(33, 33, 33, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.trend-item:hover .trend-overlay {
  opacity: 1;
}

.trend-label {
  color: var(--color-white);
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: 0.1em;
}

/* 系列展示页样式 */
.series-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  min-height: 40vh;
  align-items: center;
  padding: 6rem 2rem 4rem;
  animation: fadeInUp 0.8s ease;
}

.series-info h1 {
  font-size: 2.5rem;
  font-weight: 300;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.series-info p {
  font-size: 1.1rem;
  color: #666;
  line-height: 1.8;
}

.series-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* 瀑布流布局 */
.masonry-grid {
  column-count: 3;
  column-gap: 1rem;
  padding: 2rem;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease both;
}

.masonry-item:nth-child(1) { animation-delay: 0.1s; }
.masonry-item:nth-child(2) { animation-delay: 0.2s; }
.masonry-item:nth-child(3) { animation-delay: 0.3s; }
.masonry-item:nth-child(4) { animation-delay: 0.4s; }
.masonry-item:nth-child(5) { animation-delay: 0.5s; }
.masonry-item:nth-child(6) { animation-delay: 0.6s; }

.masonry-item img {
  width: 100%;
  transition: transform var(--transition-slow);
}

.masonry-item:hover img {
  transform: scale(1.05);
}

.masonry-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: var(--color-white);
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.masonry-item:hover .masonry-caption {
  opacity: 1;
}

/* 细节特写页样式 */
.detail-hero {
  padding: 6rem 2rem 2rem;
  animation: scaleIn 0.8s ease;
}

.detail-image {
  max-width: 1400px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.detail-description {
  text-align: center;
  margin: 2rem auto;
  max-width: 600px;
  font-size: 1.1rem;
  color: #666;
}

.detail-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: 4rem 2rem;
  max-width: 1600px;
  margin: 0 auto;
  animation: fadeInUp 1s ease 0.3s both;
}

.compare-item img {
  width: 100%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.compare-label {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: #999;
  letter-spacing: 0.05em;
}

/* 页脚样式 */
.footer {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--color-light);
  color: #666;
  font-size: 0.9rem;
  margin-top: 4rem;
}

.footer-divider {
  width: 100px;
  height: 1px;
  background: var(--color-gray);
  margin: 1rem auto;
}

/* 懒加载占位符 */
.lazy-load {
  background: var(--color-light);
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lazy-load::after {
  content: '';
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray);
  border-top-color: var(--color-dark);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
  .carousel-caption {
    font-size: 1.5rem;
  }
  
  .series-header {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .masonry-grid {
    column-count: 2;
  }
  
  .detail-compare {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .trend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .carousel-container {
    height: 50vh;
  }
  
  .carousel-caption {
    font-size: 1.2rem;
  }
  
  .masonry-grid {
    column-count: 1;
  }
  
  .series-info h1 {
    font-size: 2rem;
  }
}