/* 基础变量定义 */
:root {
  --primary-color: #1a1a1a;
  --secondary-color: #666;
  --accent-color: #e6e6e6;
  --background-color: #fafafa;
  --font-serif: "SimSun", "宋体", serif;
  --font-sans: "SimHei", "黑体", sans-serif;
  --transition-speed: 0.3s;
  --max-width: 1400px;
}

/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  color: var(--primary-color);
  background-color: var(--background-color);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 导航栏 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--accent-color);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 3rem;
}

nav a {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--secondary-color);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-speed);
  letter-spacing: 0.05em;
}

nav a:hover {
  color: var(--primary-color);
}

nav a.active {
  color: var(--primary-color);
}

nav a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--primary-color);
}

/* 主内容区 */
main {
  margin-top: 70px;
}

/* 全屏轮播图 */
.hero-carousel {
  width: 100%;
  height: 90vh;
  position: relative;
  overflow: hidden;
}

.carousel-slide {
  position: absolute;
  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-controls {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.8rem;
  z-index: 10;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all var(--transition-speed);
}

.carousel-dot.active {
  background-color: rgba(255, 255, 255, 0.95);
  transform: scale(1.2);
}

/* 内容区通用样式 */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 2rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  text-align: center;
  margin-bottom: 3rem;
  letter-spacing: 0.1em;
  font-weight: 400;
}

/* 季节灵感区 */
.seasonal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.seasonal-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.seasonal-item img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform var(--transition-speed), opacity var(--transition-speed);
}

.seasonal-item:hover img {
  transform: scale(1.05);
  opacity: 0.9;
}

.seasonal-caption {
  font-family: var(--font-serif);
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--secondary-color);
  letter-spacing: 0.05em;
}

/* 细节艺术区 */
.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.detail-item {
  overflow: hidden;
  cursor: pointer;
}

.detail-item img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  transition: transform var(--transition-speed), filter var(--transition-speed);
}

.detail-item:hover img {
  transform: scale(1.08);
  filter: brightness(1.1);
}

/* 穿搭叙事区 */
.styling-scroll {
  display: flex;
  overflow-x: auto;
  gap: 2rem;
  padding: 1rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-color) transparent;
}

.styling-scroll::-webkit-scrollbar {
  height: 6px;
}

.styling-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.styling-scroll::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 3px;
}

.styling-item {
  flex: 0 0 350px;
  overflow: hidden;
}

.styling-item img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  transition: transform var(--transition-speed);
}

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

/* 精选系列分类导航 */
.collection-nav {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--accent-color);
  padding-bottom: 1rem;
}

.collection-nav a {
  font-family: var(--font-serif);
  color: var(--secondary-color);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-speed);
  letter-spacing: 0.05em;
}

.collection-nav a:hover {
  color: var(--primary-color);
}

.collection-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -11px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--primary-color);
}

/* 精选系列展示 */
.collection-section {
  margin-bottom: 5rem;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.collection-item {
  text-align: center;
}

.collection-item img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  transition: transform var(--transition-speed), opacity var(--transition-speed);
  cursor: pointer;
}

.collection-item:hover img {
  transform: scale(1.03);
  opacity: 0.95;
}

.collection-caption {
  font-family: var(--font-serif);
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--secondary-color);
  letter-spacing: 0.05em;
}

/* 美学理念主视觉 */
.philosophy-hero {
  display: flex;
  align-items: center;
  gap: 3rem;
  margin-bottom: 5rem;
}

.philosophy-hero img {
  flex: 1;
  width: 50%;
  height: 500px;
  object-fit: cover;
}

.philosophy-text {
  flex: 1;
  font-family: var(--font-serif);
  line-height: 2;
  color: var(--secondary-color);
  letter-spacing: 0.05em;
}

.philosophy-text h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  font-weight: 400;
}

/* 三大原则 */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-bottom: 5rem;
}

.principle-item img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  margin-bottom: 1.5rem;
}

.principle-item h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.principle-item p {
  font-family: var(--font-serif);
  line-height: 1.8;
  color: var(--secondary-color);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

/* 视觉日记 */
.visual-diary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.diary-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform var(--transition-speed);
}

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

/* 页脚 */
footer {
  text-align: center;
  padding: 2rem;
  color: #999;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  border-top: 1px solid var(--accent-color);
}

/* 渐入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* 响应式布局 */
@media (max-width: 768px) {
  nav {
    gap: 1.5rem;
  }
  
  nav a {
    font-size: 0.85rem;
  }
  
  .section {
    padding: 3rem 1.5rem;
  }
  
  .section-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
  }
  
  .seasonal-grid,
  .details-grid,
  .collection-grid {
    grid-template-columns: 1fr;
  }
  
  .styling-item {
    flex: 0 0 280px;
  }
  
  .collection-nav {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .philosophy-hero {
    flex-direction: column;
  }
  
  .philosophy-hero img {
    width: 100%;
  }
  
  .principles-grid {
    grid-template-columns: 1fr;
  }
}