/* 全局重置与基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-ivory: #FFFFF0;
  --color-light-gray: #E8E8E8;
  --color-oatmeal: #F5F0E8;
  --color-lavender: #E6E6FA;
  --color-sandstone: #D4C4B0;
  --color-sea-foam: #9FE2BF;
  --color-text-dark: #333333;
  --color-text-gray: #888888;
  --color-border: #DDDDDD;
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
}

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

body {
  font-family: 'Source Serif Pro', 'Noto Serif SC', serif;
  line-height: 1.8;
  color: var(--color-text-dark);
  background-color: var(--color-ivory);
  overflow-x: hidden;
}

/* 导航栏样式 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 240, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

header.scrolled {
  background-color: rgba(255, 255, 240, 0.8);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 3rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-dark);
  text-decoration: none;
  transition: opacity var(--transition-base);
}

.logo:hover {
  opacity: 0.7;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-lavender), var(--color-sea-foam));
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.nav-links {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.nav-links a {
  font-size: 1rem;
  color: var(--color-text-dark);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-base);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  width: 0;
  height: 1px;
  background-color: var(--color-text-dark);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  font-weight: 600;
}

/* 主容器样式 */
main {
  padding-top: 80px;
  min-height: 100vh;
}

/* 首页轮播样式 */
.hero-slider {
  position: relative;
  height: 90vh;
  overflow: hidden;
  background-color: var(--color-oatmeal);
}

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

.slide.active {
  opacity: 1;
}

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

.slide-caption {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: white;
  background-color: rgba(0, 0, 0, 0.3);
  padding: 1.5rem 3rem;
  backdrop-filter: blur(5px);
  max-width: 600px;
}

.slide-caption h2 {
  font-size: 1.75rem;
  font-weight: 300;
  margin-bottom: 0.5rem;
}

.slider-controls {
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1rem;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all var(--transition-base);
}

.slider-dot.active {
  background-color: white;
  transform: scale(1.2);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator svg {
  width: 24px;
  height: 24px;
  fill: white;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* 内容区块样式 */
.content-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 3rem;
}

.intro-text {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.intro-text h1 {
  font-size: 2.5rem;
  font-weight: 300;
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.intro-text p {
  font-size: 1.125rem;
  color: var(--color-text-gray);
  line-height: 2;
}

/* 图片网格样式 */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.image-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border-radius: 2px;
  transition: transform var(--transition-base);
}

.image-card:hover {
  transform: translateY(-5px);
}

.image-card img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.image-card:hover img {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  padding: 2rem 1.5rem 1.5rem;
  color: white;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.image-card:hover .image-overlay {
  opacity: 1;
}

.image-overlay p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 工艺页面样式 */
.craft-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 4rem 3rem;
}

.side-nav {
  position: sticky;
  top: 120px;
  height: fit-content;
}

.side-nav ul {
  list-style: none;
}

.side-nav a {
  display: block;
  padding: 0.75rem 0;
  color: var(--color-text-gray);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 1rem;
  transition: all var(--transition-base);
}

.side-nav a:hover,
.side-nav a.active {
  color: var(--color-text-dark);
  border-left-color: var(--color-text-dark);
}

.craft-content section {
  margin-bottom: 6rem;
  scroll-margin-top: 100px;
}

.craft-content h2 {
  font-size: 2rem;
  font-weight: 300;
  margin-bottom: 2rem;
}

.craft-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

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

.craft-item img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  margin-bottom: 1.5rem;
  border-radius: 2px;
}

.craft-item h3 {
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

.craft-item p {
  color: var(--color-text-gray);
  line-height: 1.8;
}

/* 风格图鉴过滤器 */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 4rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
}

.filter-btn {
  padding: 0.75rem 2rem;
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-dark);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: inherit;
  font-size: 1rem;
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--color-text-dark);
  color: white;
  border-color: var(--color-text-dark);
}

/* 风格图鉴网格 */
.style-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.style-item {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  border-radius: 2px;
}

.style-item img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.style-item:hover img {
  transform: scale(1.08);
}

.style-description {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  padding: 2rem 1.5rem 1.5rem;
  color: white;
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.style-item:hover .style-description {
  transform: translateY(0);
}

/* 全屏图片查看器 */
.fullscreen-viewer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

.fullscreen-viewer.active {
  display: flex;
}

.fullscreen-viewer img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

.close-viewer {
  position: absolute;
  top: 2rem;
  right: 2rem;
  font-size: 2rem;
  color: white;
  cursor: pointer;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-base);
}

.close-viewer:hover {
  opacity: 0.7;
}

/* 页脚样式 */
footer {
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
  text-align: center;
  background-color: var(--color-oatmeal);
}

footer p {
  color: var(--color-text-gray);
  font-size: 0.9rem;
}

/* CTA按钮样式 */
.cta-button {
  display: inline-block;
  padding: 1rem 3rem;
  margin-top: 3rem;
  background-color: var(--color-text-dark);
  color: white;
  text-decoration: none;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 1rem;
}

.cta-button:hover {
  background-color: var(--color-sandstone);
  color: var(--color-text-dark);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  nav {
    padding: 1.5rem 2rem;
  }
  
  .nav-links {
    gap: 2rem;
  }
  
  .craft-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .side-nav {
    position: static;
    display: flex;
    overflow-x: auto;
  }
  
  .side-nav ul {
    display: flex;
    gap: 2rem;
  }
  
  .side-nav a {
    white-space: nowrap;
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.5rem 0;
  }
  
  .side-nav a:hover,
  .side-nav a.active {
    border-left: none;
    border-bottom-color: var(--color-text-dark);
  }
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  .nav-links {
    gap: 1.5rem;
  }
  
  .hero-slider {
    height: 70vh;
  }
  
  .content-section {
    padding: 3rem 1.5rem;
  }
  
  .intro-text h1 {
    font-size: 2rem;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .filter-bar {
    flex-wrap: wrap;
    gap: 1rem;
  }
  
  .style-grid {
    grid-template-columns: 1fr;
  }
  
  .craft-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .slide-caption {
    padding: 1rem 1.5rem;
    max-width: 90%;
  }
  
  .slide-caption h2 {
    font-size: 1.25rem;
  }
  
  .intro-text h1 {
    font-size: 1.75rem;
  }
  
  .intro-text p {
    font-size: 1rem;
  }
}

/* 加载动画 */
.fade-in {
  animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 平滑滚动 */
.smooth-scroll {
  scroll-behavior: smooth;
}