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

:root {
  --color-primary: #2c2c2c;
  --color-secondary: #8b7355;
  --color-accent: #d4a574;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* 图片悬停效果 */
.image-hover {
  transition: var(--transition-smooth);
  overflow: hidden;
}

.image-hover img {
  transition: var(--transition-smooth);
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-hover:hover img {
  transform: scale(1.05);
  filter: brightness(1.1);
}

/* 导航栏样式 */
.nav-link {
  position: relative;
  transition: var(--transition-smooth);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 1px;
  background-color: var(--color-secondary);
  transition: var(--transition-smooth);
  transform: translateX(-50%);
}

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

/* 页面过渡效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* 响应式图片容器 */
.image-container {
  position: relative;
  width: 100%;
  padding-bottom: 133.33%;
  overflow: hidden;
  background-color: var(--color-light);
}

.image-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 文字渐变效果 */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 卡片阴影效果 */
.card-shadow {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
}

.card-shadow:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

/* 页脚样式 */
.footer {
  text-align: center;
  padding: 2rem 0;
  color: var(--color-secondary);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

/* 响应式断点 */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .image-container {
    padding-bottom: 150%;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 13px;
  }
}

/* 平滑滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-light);
}

::-webkit-scrollbar-thumb {
  background: var(--color-secondary);
  border-radius: 4px;
}

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