/* 
顶棚产品公司专业网站样式
基于大阪世博会2025设计分析的工业化设计风格
*/

/* CSS变量定义 */
:root {
  /* 核心色彩系统 - 金色专业主题 */
  --primary-color: #B8860B;      /* 深金色 - 主色调 */
  --primary-light: #DAA520;      /* 亮金色 - 浅色变体 */
  --primary-dark: #8B6914;       /* 暗金色 - 深色变体 */
  --secondary-color: #4A5568;    /* 深灰蓝 - 辅助色 */
  --accent-color: #CD853F;       /* 古铜色 - 强调色 */
  --text-primary: #1A202C;       /* 深炭灰 - 主要文字 */
  --text-secondary: #4A5568;     /* 深灰蓝 - 次要文字 */
  --background-light: #FFFFFF;   /* 暖白背景 */
  --background-white: #FFFFFF;   /* 纯白背景 */
  --background-gold: #FFFFFF;    /* 金色背景 */
  --border-color: #E2D5C7;       /* 暖灰边框 */
  --sand-yellow: #F4A460;        /* 沙黄色 - RAL 1002 */
  --sand-yellow-light: #F5DEB3;  /* 浅沙黄色 */
  --success-color: #38A169;      /* 成功绿色 */
  --error-color: #E53E3E;        /* 错误红色 */
  
  /* 字体系统 */
  --font-family: 'Montserrat', '思源黑体 CN', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-h1: 48px;
  --font-size-h2: 36px;
  --font-size-h3: 24px;
  --font-size-h4: 20px;
  --font-size-body: 16px;
  --font-size-caption: 14px;
  
  /* 响应式字体大小 */
  --font-size-h1-mobile: 36px;
  --font-size-h2-mobile: 28px;
  
  /* 间距系统 (基于8px) */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  --spacing-xxxl: 80px;
  
  /* 阴影系统 */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* 动画参数 */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  
  /* 容器宽度 */
  --container-max-width: 1280px;
}

/* 基础重置和全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--background-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.pt-0{padding-top:0 !important;}

/* 容器系统 */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid{
  max-width: 100vw !important;
}

/* 排版系统 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

h1 {
  font-size: var(--font-size-h1);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: var(--font-size-h2);
  font-weight: 600;
  line-height: 1.3;
}

h3 {
  font-size: var(--font-size-h3);
  font-weight: 600;
  line-height: 1.4;
}

h4 {
  font-size: var(--font-size-h4);
  font-weight: 500;
  line-height: 1.5;
}

p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.p-9{
  padding-top:var(--spacing-lg);
  padding-bottom:var(--spacing-lg);
}
.pb-9{
  padding-bottom:var(--spacing-lg);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* 头部导航 */
.header {
  background: transparent;
  box-shadow: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 80px;
  transition: all 0.3s ease;
}

.header.scrolled {
  background: var(--background-white);
  box-shadow: var(--shadow-sm);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  margin-top:10px;
}

.logo {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-color);
}
.logo img{
  height: 60px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-menu > a,
.nav-item {
  position: relative;
}

.nav-menu a {
  font-weight: 500;
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 6px;
  transition: all var(--transition-fast);
  display: block;
}

.header.scrolled .nav-menu a{
  color: var(--accent-color);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary-color);
  background-color: rgba(184, 134, 11, 0.1);
  text-decoration: none;
}

/* 下拉菜单样式 */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--background-white);
  min-width: 200px;
  box-shadow: var(--shadow-lg);
  border-radius: 8px;
  padding: var(--spacing-xs) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  z-index: 1000;
  border: 1px solid var(--border-color);
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 14px;
  border-radius: 0;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.dropdown-menu a:hover {
  background-color: var(--background-gold);
  color: var(--primary-color);
  padding-left: var(--spacing-md);
}

/* 下拉箭头指示器 */
.dropdown > a::after {
  content: '▼';
  font-size: 10px;
  margin-left: 6px;
  transition: transform var(--transition-fast);
}

.dropdown:hover > a::after {
  transform: rotate(180deg);
}

.contact-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-caption);
  color: var(--text-secondary);
}

.contact-info strong {
  color: var(--primary-color);
}

/* 移动端菜单 */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--primary-color);
  cursor: pointer;
}

/* 主要内容区域 */
.main-content {
  margin-top: 80px;
}

/* 英雄轮播图区域 */
.hero-carousel {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.carousel-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  z-index: 1;
}

.carousel-slide.active {
  opacity: 1;
  transform: translateX(0);
  z-index: 2;
}

.carousel-slide.prev {
  transform: translateX(-100%);
}

.slide-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-color:#000;
}

  .slide-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
  }

.slide-content {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  color: white;
  z-index: 2;
}

.slide-text {
  max-width: 800px;
  text-align: left;
  animation: slideInFromLeft 1s ease-out 0.5s both;
}

.slide-title {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 800;
  line-height: 1.1;
  color:white;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.slide-subtitle {
  font-size: clamp(16px, 2.5vw, 28px);
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 32px;
  color:white;
  opacity: 0.9;
  text-transform: uppercase;
}

.slide-description {
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.6;
  margin-bottom: 48px;
  opacity: 0.95;
  max-width: 600px;
}

.slide-actions {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

/* 英雄按钮样式 */
.btn-hero {
  display: inline-flex;
  align-items: center;
  padding: 18px 36px;
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  min-width: 160px;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-hero.primary {
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary-color);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-hero.primary:hover {
  background: white;
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  color: var(--primary-color);
  text-decoration: none;
}

.btn-hero.secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-hero.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  transform: translateY(-3px);
  color: white;
  text-decoration: none;
}

/* 轮播控制器 */
.carousel-controls {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 40px;
  z-index: 10;
  pointer-events: none;
}

.carousel-nav {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  pointer-events: all;
  backdrop-filter: blur(10px);
}

.carousel-nav:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
  transform: scale(1.1);
}

/* 轮播指示器 */
.carousel-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 16px;
  z-index: 10;
}

.indicator {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.indicator.active {
  background: white;
  border-color: white;
  transform: scale(1.2);
}

.indicator:not(.active):hover {
  border-color: rgba(255, 255, 255, 0.8);
  transform: scale(1.1);
}

/* 动画效果 */
@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 轮播图响应式设计 */
@media (max-width: 1024px) {
  .hero-carousel {
    min-height: 500px;
  }
  
  .carousel-controls {
    padding: 0 20px;
  }
  
  .carousel-nav {
    width: 50px;
    height: 50px;
  }
  
  .slide-actions {
    gap: 16px;
  }
  
  .btn-hero {
    padding: 14px 28px;
    font-size: 16px;
    min-width: 140px;
  }
}

@media (max-width: 768px) {
  .hero-carousel {
    min-height: 450px;
  }
  
  .slide-text {
    text-align: center;
  }
  
  .slide-actions {
    justify-content: center;
    flex-direction: column;
    align-items: center;
  }
  
  .btn-hero {
    width: 100%;
    max-width: 280px;
  }
  
  .carousel-controls {
    display: none;
  }
  
  .carousel-indicators {
    bottom: 20px;
  }
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 12px 24px;
  border: none;
  border-radius: 6px;
  font-size: var(--font-size-body);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
}

.btn-large {
  padding: 16px 32px;
  font-size: 18px;
}

/* 现代化段落标题 */
.section-header.modern {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
  position: relative;
}

.section-header.modern::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 2px;
}

/* 全屏产品展示 */
/* 豪华帐篷产品展示 */
.luxury-tents-showcase {
  padding: 80px 0;
  background: #f8f9fa;
}

.luxury-tents-showcase .section-header {
  text-align: center;
  margin-bottom: 60px;
}

.luxury-tents-showcase .section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.luxury-tents-showcase .section-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.tents-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 100%;
  margin: 0 auto;
}

.tent-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
}

.tent-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.tent-image {
  position: relative;
  height: 400px;
  overflow: hidden;
}

.tent-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.tent-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 123, 255, 0.8) 0%, rgba(0, 86, 179, 0.8) 100%);
  opacity: 0;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.tent-actions {
  text-align: center;
}

.btn-tent {
  padding: 12px 25px;
  background: white;
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-tent:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.tent-content {
  padding: 25px;
  text-align: center;
}

.tent-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 12px;
}

.tent-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  /* 限制显示2行文字，超出显示省略号 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .tents-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }
  
  .tent-image {
    height: 220px;
  }
}

@media (max-width: 768px) {
  .luxury-tents-showcase {
    padding: 60px 0;
  }
  
  .luxury-tents-showcase .section-header h2 {
    font-size: 2rem;
  }
  
  .tents-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 400px;
  }
  
  .tent-image {
    height: 200px;
  }
  
  .tent-content {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .luxury-tents-showcase {
    padding: 40px 0;
  }
  
  .luxury-tents-showcase .section-header h2 {
    font-size: 1.8rem;
  }
  
  .luxury-tents-showcase .section-header p {
    font-size: 1rem;
  }
  
  .tent-content h3 {
    font-size: 1.2rem;
  }
  
  .tent-content p {
    font-size: 0.9rem;
  }
}

/* 数字化展示区域 */
.numbers-showcase {
  position: relative;
  overflow: hidden;
}

.numbers-showcase::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 40%, rgba(184, 134, 11, 0.02) 50%, transparent 60%);
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.number-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--background-white);
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.number-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.number-visual {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-md);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.number-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.1;
}

.number-bg.bg-primary { background: var(--primary-color); }
.number-bg.bg-success { background: var(--success-color); }
.number-bg.bg-accent { background: var(--accent-color); }
.number-bg.bg-secondary { background: var(--secondary-color); }

.number-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.big-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1;
}

.number-suffix {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary-color);
  margin-left: 4px;
}

.number-card h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.number-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
}

/* 响应式设计 - 图片卡片布局 */
@media (max-width: 1024px) {
  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .numbers-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .number-visual {
    width: 100px;
    height: 100px;
  }
  
  .big-number {
    font-size: 20px;
  }
}

.number-suffix {
  font-size: 20px;
}

/* 网格系统 */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* 卡片组件 */
.card {
  background: var(--background-white);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-md);
}

.card-title {
  height:60px;
  font-size: var(--font-size-h4);
  margin-bottom: var(--spacing-xs);
}

.card-description {
  height:160px;overflow:hidden;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  /*display: none;*/
}

/* 产品卡片特殊样式 */
.product-card .card-image {
  height: 240px;
}

.product-card .card-content {
  padding: var(--spacing-lg);
}

/* 优势特性区域 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-lg);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 36px;
  color: white;
}

.feature-icon img{
  width:1.2em;height:1.2em;
}

/* 页脚 */
.footer {
  background-color: var(--text-primary);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: #D1D5DB;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid #374151;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: #9CA3AF;
}

/* 表单样式 */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-size: var(--font-size-body);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .hero-section {
    height: 50vh;
    min-height: 400px;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
    margin:var(--spacing-xl) 0 0 0;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-h1: var(--font-size-h1-mobile);
    --font-size-h2: var(--font-size-h2-mobile);
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    padding: 0 var(--spacing-sm);
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--background-white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .contact-info {
    display: none;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-h1-mobile);
  }
  
  .hero-content p {
    font-size: 18px;
  }
  
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .btn-large {
    padding: 14px 24px;
    font-size: 16px;
  }
}

/* 实用工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }

.bg-white { background-color: var(--background-white); }
.bg-light { background-color: var(--background-light); }

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 面包屑导航 */
.breadcrumb {
  background: var(--background-light);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-caption);
}

.breadcrumb-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
}

.breadcrumb-list li:not(:last-child)::after {
  content: '/';
  margin-left: var(--spacing-xs);
  color: var(--text-secondary);
}

.breadcrumb-list a {
  color: var(--text-secondary);
}

.breadcrumb-list a:hover {
  color: var(--primary-color);
}

/* 优势展示区域 */
.advantages-section {
  background: linear-gradient(135deg, rgba(184, 134, 11, 0.02) 0%, rgba(217, 119, 6, 0.05) 100%);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.advantage-card {
  background: var(--background-white);
  padding: var(--spacing-xl);
  border-radius: 20px;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.advantage-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.advantage-visual {
  position: relative;
  width: 100px;
  height: 100px;
  margin: 0 auto var(--spacing-lg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.advantage-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  opacity: 0.1;
}

.advantage-icon {
  font-size: 48px;
  position: relative;
  z-index: 2;
  filter: grayscale(1);
  transition: filter 0.3s ease;
}

.advantage-card:hover .advantage-icon {
  filter: grayscale(0);
}

.advantage-card h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.advantage-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 案例展示区域 */
.cases-showcase {
  background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
}

.cases-gallery {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.case-featured {
  height: 500px;
  border-radius: 24px;
  overflow: hidden;
  position: relative;
}

.case-image {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.case-bg.industrial {
  background: linear-gradient(135deg, 
    rgba(184, 134, 11, 0.9) 0%, 
    rgba(55, 65, 81, 0.8) 100%),
    radial-gradient(circle at top right, rgba(217, 119, 6, 0.3), transparent);
}

.case-bg.commercial {
  background: linear-gradient(135deg, 
    rgba(184, 134, 11, 0.9) 0%, 
    rgba(217, 119, 6, 0.8) 100%);
}

.case-bg.sports {
  background: linear-gradient(135deg, 
    rgba(168, 85, 247, 0.9) 0%, 
    rgba(236, 72, 153, 0.8) 100%);
}

.case-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  color: white;
  padding: var(--spacing-xl);
}

.case-info {
  text-align: center;
  max-width: 500px;
}

.case-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  backdrop-filter: blur(10px);
}

.case-info h3 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.case-info p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.case-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
}

.case-stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.stat-unit {
  font-size: 12px;
  opacity: 0.8;
  text-transform: uppercase;
}

.case-secondary {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.case-item {
  height: 240px;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-content {
  position: relative;
  z-index: 2;
  color: white;
  text-align: center;
  padding: var(--spacing-lg);
}

.case-item h4 {
  font-size: 18px;
  font-weight: 600;
  margin: var(--spacing-xs) 0;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.case-item p {
  font-size: 14px;
  opacity: 0.9;
  margin: 0;
}

/* CTA区域 */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color) 0%,var(--primary-color) 100%);
  color: white;
  text-align: center;
  padding: var(--spacing-lg);
}

.cta-content {
  max-width: 800px;
  margin: 0 auto;
}

.cta-text h2 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-sm);
}

.cta-text p {
  font-size: 20px;
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

.cta-actions {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-actions .btn {
  /* min-width: 180px; */
  text-align:center;
}

.cta-actions .btn-primary {
  background: white;
  color: var(--primary-color);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.cta-actions .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
  color: var(--primary-color);
}

.cta-actions .btn-secondary {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.5);
}

.cta-actions .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  color: white;
}

/* 新增响应式设计 */
@media (max-width: 1024px) {
  .cases-gallery {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .case-featured {
    height: 400px;
  }
  
  .case-secondary {
    flex-direction: row;
    gap: var(--spacing-md);
  }
  
  .case-item {
    height: 200px;
  }
}

@media (max-width: 768px) {
  .advantages-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .case-secondary {
    flex-direction: column;
  }
  
  .case-info h3 {
    font-size: 24px;
  }
  
  .case-stats {
    gap: var(--spacing-md);
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .cta-actions .btn {
    width: 100%;
    max-width: 300px;
  }
}

/* ===== 成功案例展示区域 ===== */
.success-cases-section {
  background: white;
  padding: var(--spacing-xxxl) 0;
}

.cases-showcase-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.featured-case-container {
  position: relative;
}

.featured-case {
  height: 792px;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.case-image-bg {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transition: var(--transition-normal);
}

.featured-case:hover .case-image-bg {
  transform: scale(1.02);
}

.case-overlay {
  background: linear-gradient(135deg, rgba(184, 134, 11, 0.85) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(184, 134, 11, 0.6) 100%);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: flex-end;
}

.case-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
}

.case-content {
  position: relative;
  z-index: 2;
  color: white;
  padding: var(--spacing-xl);
  width: 100%;
}

.case-tag {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.case-content h3 {
  font-size: 32px;
  font-weight: 700;
  color:white;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.case-content p {
  font-size: 18px;
  color:white;
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

.case-highlights {
  margin-bottom: var(--spacing-lg);
}

.highlight-row {
  display: flex;
  gap: var(--spacing-lg);
}

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

.highlight-value {
  display: block;
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-color);
}

.highlight-unit {
  font-size: 18px;
  font-weight: 600;
  margin-left: 4px;
}

.highlight-label {
  display: block;
  font-size: 14px;
  opacity: 0.8;
  margin-top: 4px;
}

.case-features {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.feature-tag {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
}

.secondary-cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.case-card {
  height: 180px;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: var(--transition-normal);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.case-card-image {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transition: var(--transition-normal);
}

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

.case-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(184, 134, 11, 0.85) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(184, 134, 11, 0.6) 100%);
  display: flex;
  align-items: center;
  padding: var(--spacing-md);
}

.case-card-content {
  color: white;
}

.case-category {
  display: inline-block;
  color:var(--primary-color);
  background: var(--background-light);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.case-card-content h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  line-height: 1.3;
  color: white;
}

.case-card-content p {
  font-size: 13px;
  opacity: 0.9;
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

.case-mini-stats {
  display: flex;
  gap: var(--spacing-xs);
}

.mini-stat {
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 8px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 600;
}

.mini-value {
  color: white;
}

.cases-action {
  text-align: center;
  margin-top: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.cases-count {
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 500;
}

/* ===== 客户展示区域 ===== */
.clients-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: white;
  padding: var(--spacing-xxxl) 0;
}

.clients-section .section-header h2,
.clients-section .section-header p {
  color: white;
}

.clients-showcase {
  margin-top: var(--spacing-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.clients-logo-wall {
  position: relative;
  height: 400px;
  border-radius: 16px;
  overflow: hidden;
}

.logo-wall-bg {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  filter: grayscale(100%) brightness(0.3);
}

.logo-wall-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(184, 134, 11, 0.85) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(184, 134, 11, 0.6) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  width: 100%;
}

.logo-item {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.logo-item:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.logo-placeholder {
  color: white;
  font-weight: 600;
  font-size: 12px;
  text-align: center;
}

.testimonials-container {
  position: relative;
}

.testimonials-slider {
  position: relative;
  height: 400px;
}

.testimonial-card {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: var(--spacing-lg);
  display: none;
  grid-template-columns: 120px 1fr;
  gap: var(--spacing-md);
  align-items: center;
}

.testimonial-card.active {
  display: grid;
}

.testimonial-image {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  border: 3px solid rgba(255, 255, 255, 0.3);
}

.testimonial-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.testimonial-quote {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.quote-mark {
  font-size: 48px;
  color: var(--accent-color);
  line-height: 1;
  font-family: serif;
}

.testimonial-quote p {
  font-style: italic;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
}

.testimonial-author {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.author-info h5 {
  color: white;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.author-title {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.rating .stars {
  color: var(--accent-color);
  font-size: 16px;
}

.testimonials-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.testimonial-nav {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-normal);
  font-size: 18px;
}

.testimonial-nav:hover {
  background: rgba(255, 255, 255, 0.3);
}

.testimonial-indicators {
  display: flex;
  gap: var(--spacing-xs);
}

.testimonial-indicators .indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition-normal);
}

.testimonial-indicators .indicator.active {
  background: var(--accent-color);
}

.clients-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.client-stat {
  text-align: center;
}

.client-stat .stat-number {
  display: block;
  font-size: 36px;
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-xs);
}

.client-stat .stat-label {
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  font-weight: 500;
}

/* ===== Our Customers 客户展示区域 ===== */
.customers-section {
  background: #f8f9fa;
  padding: 80px 0;
  overflow: hidden;
}

.customers-section .section-header {
  text-align: center;
  margin-bottom: 60px;
}

.customers-section .section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.customers-slider {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.customers-track {
  display: flex;
  align-items: center;
  animation: scroll-infinite 60s linear infinite;
  width: calc(24 * (120px + 40px));
  /* 24个logo，每个120px宽度 + 40px间距 */
}

.customer-logo {
  flex: 0 0 auto;
  width: 180px;
  height: 100px;
  margin: 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  opacity: 0.7;
}

.customer-logo:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  opacity: 1;
}

.customer-logo img {
  max-width: 80px;
  max-height: 50px;
  width: auto;
  height: auto;
  filter: grayscale(100%);
  transition: filter 0.3s ease;
}

.customer-logo:hover img {
  filter: grayscale(0%);
}

@keyframes scroll-infinite {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(-12 * (120px + 40px)));
    /* 移动12个logo的距离，正好是总宽度的一半 */
  }
}

/* 暂停动画当鼠标悬停在容器上 */
.customers-slider:hover .customers-track {
  animation-play-state: paused;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .customers-section {
    padding: 60px 0;
  }
  
  .customers-section .section-header h2 {
    font-size: 2rem;
  }
  
  .customer-logo {
    width: 100px;
    height: 70px;
    margin: 0 15px;
  }
  
  .customer-logo img {
    max-width: 70px;
    max-height: 40px;
  }
}

@media (max-width: 768px) {
  .customers-section {
    padding: 50px 0;
  }
  
  .customers-section .section-header h2 {
    font-size: 1.8rem;
  }
  
  .customer-logo {
    width: 90px;
    height: 60px;
    margin: 0 12px;
  }
  
  .customer-logo img {
    max-width: 60px;
    max-height: 35px;
  }
  
  .customers-track {
    animation-duration: 25s;
  }
}

@media (max-width: 480px) {
  .customers-section {
    padding: 40px 0;
  }
  
  .customers-section .section-header h2 {
    font-size: 1.6rem;
  }
  
  .customer-logo {
    width: 80px;
    height: 55px;
    margin: 0 10px;
  }
  
  .customer-logo img {
    max-width: 55px;
    max-height: 30px;
  }
  
  .customers-track {
    animation-duration: 20s;
  }
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
  
  .cases-showcase-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .featured-case {
    height: 400px;
  }
  
  .clients-showcase {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  

}

@media (max-width: 768px) {
  
  .secondary-cases-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonial-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .testimonial-image {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
  }
  
  .clients-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .case-content h3 {
    font-size: 24px;
  }
  
  .highlight-row {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .highlight-value {
    font-size: 28px;
  }
}

.hide{
    display:none;
}