/* 顺铭科技 - 全局样式 */

/* CSS变量 */
:root {
  --primary-blue: #0473ea;
  --accent-green: #38d200;
  --black: #000000;
  --white: #ffffff;
  --gray-1: #333333;
  --gray-2: #999999;
  --gray-3: #f5f5f5;
  
  --ease-expo-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-expo-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-elastic: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-dramatic: cubic-bezier(0.87, 0, 0.13, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  
  --duration-micro: 150ms;
  --duration-fast: 300ms;
  --duration-normal: 500ms;
  --duration-slow: 800ms;
  --duration-cinematic: 1200ms;
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-1);
  background: var(--white);
  overflow-x: hidden;
}

/* ========== 核心：全局滚动条样式（作用于整个网页） ========== */
/* 1. Webkit内核（Chrome/Edge/Safari）- 完整自定义 */
/* 滚动条整体尺寸 */
html::-webkit-scrollbar {
    width: 10px; /* 垂直滚动条宽度（全局） */
    height: 10px; /* 水平滚动条高度（全局） */
}

/* 滚动条轨道（背景） */
html::-webkit-scrollbar-track {
    background: #f8f9fa; /* 轨道底色，适配浅色网页 */
    border-radius: 5px; /* 轨道圆角，更柔和 */
}

/* 滚动条滑块（可拖动部分） */
html::-webkit-scrollbar-thumb {
    background: #dee2e6; /* 滑块默认色 */
    border-radius: 5px; /* 滑块圆角 */
    border: 2px solid #f8f9fa; /* 滑块边框，营造镂空感 */
    transition: background 0.2s ease; /* hover过渡动画 */
}

    /* 滑块hover状态（鼠标悬浮） */
    html::-webkit-scrollbar-thumb:hover {
        background: #adb5bd; /* hover加深色，提升交互感 */
    }

    /* 滑块激活状态（鼠标点击拖动） */
    html::-webkit-scrollbar-thumb:active {
        background: #6c757d; /* 激活色，进一步加深 */
    }

/* 滚动条角落（垂直+水平滚动条交汇处） */
html::-webkit-scrollbar-corner {
    background: #f8f9fa; /* 角落底色，和轨道一致 */
}

/* 2. Firefox浏览器兼容 */
html {
    scrollbar-width: thin; /* 滚动条宽度：thin（细）/auto（默认）/none（隐藏） */
    scrollbar-color: #dee2e6 #f8f9fa; /* 滑块颜色 轨道颜色，和webkit保持一致 */
}


a {
  text-decoration: none;
  color: inherit;
  transition: color var(--duration-fast) var(--ease-smooth);
}

ul, ol {
  list-style: none;
}

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

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  z-index: 1000;
  transition: all 0.4s var(--ease-expo-out);
}

.navbar.transparent {
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  transition: color 0.4s var(--ease-smooth);
}

.navbar.scrolled .logo {
  color: var(--black);
}

.logo span {
  color: var(--primary-blue);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
  position: relative;
  transition: color 0.4s var(--ease-smooth);
}

.navbar.scrolled .nav-link {
  color: var(--gray-1);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: width var(--duration-fast) var(--ease-expo-out);
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--primary-blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background: var(--primary-blue);
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.btn-primary:hover {
  background: #046dd9;
  transform: scale(1.02);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background: transparent;
  color: var(--primary-blue);
  font-size: 14px;
  font-weight: 600;
  border-radius: 4px;
  border: 2px solid var(--primary-blue);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

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

.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  background: var(--white);
  color: var(--black);
  font-size: 15px;
  font-weight: 600;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.btn-white:hover {
  background: var(--gray-3);
  transform: scale(1.02);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}

.lang-switch a {
  color: var(--white);
  opacity: 0.7;
  transition: all 0.3s var(--ease-smooth);
}

.navbar.scrolled .lang-switch a {
  color: var(--gray-1);
}

.lang-switch a.active,
.lang-switch a:hover {
  opacity: 1;
  color: var(--primary-blue);
}

.lang-switch .divider {
  color: var(--white);
  opacity: 0.5;
}

.navbar.scrolled .lang-switch .divider {
  color: var(--gray-2);
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: 10px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s var(--ease-expo-out);
}

.navbar.scrolled .hamburger span {
  background: var(--black);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background: var(--white);
  z-index: 999;
  padding: 100px 30px 30px;
  transition: right 0.4s var(--ease-expo-out);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s var(--ease-smooth);
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-link {
  display: block;
  padding: 15px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--gray-1);
  border-bottom: 1px solid var(--gray-3);
  transition: all 0.3s var(--ease-smooth);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--primary-blue);
  padding-left: 10px;
}

/* 主视觉轮播 */
.hero-carousel {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s var(--ease-smooth), visibility 0.8s;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transform: scale(1.1);
  animation: kenBurns 8s linear infinite alternate;
}

@keyframes kenBurns {
  0% { transform: scale(1.1); }
  100% { transform: scale(1.05); }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.4), rgba(0,0,0,0.6));
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--white);
  z-index: 2;
  width: 90%;
  max-width: 800px;
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  opacity: 0;
  transform: translateY(60px);
  transition: all 0.8s var(--ease-expo-out);
}

.hero-slide.active .hero-title {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.3s;
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 400;
  margin-bottom: 40px;
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.6s var(--ease-expo-out);
}

.hero-slide.active .hero-subtitle {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.6s;
}

.hero-btn {
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.5s var(--ease-elastic);
}

.hero-slide.active .hero-btn {
  opacity: 1;
  transform: scale(1);
  transition-delay: 0.8s;
}

/* 轮播指示器 */
.carousel-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 3;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
}

.carousel-dot.active {
  background: var(--white);
  transform: scale(1.2);
}

.carousel-dot:hover {
  background: rgba(255, 255, 255, 0.7);
}

/* 轮播箭头 */
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 3;
  transition: all 0.3s var(--ease-smooth);
  opacity: 0.5;
}

.carousel-arrow:hover {
  background: rgba(255, 255, 255, 0.2);
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
}

.carousel-arrow.prev {
  left: 30px;
}

.carousel-arrow.next {
  right: 30px;
}

.carousel-arrow svg {
  width: 24px;
  height: 24px;
  stroke: var(--white);
}

/* 区块通用样式 */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-blue);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
  display: inline-block;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--gray-2);
  line-height: 1.8;
}

/* 关于我们区块 */
.about-section {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content {
  position: relative;
}

.about-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 24px;
}

.about-text {
  font-size: 16px;
  color: var(--gray-1);
  line-height: 1.8;
  margin-bottom: 30px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 30px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--gray-1);
  transition: color 0.3s var(--ease-smooth);
}

.about-feature:hover {
  color: var(--primary-blue);
}

.about-feature svg {
  width: 20px;
  height: 20px;
  color: var(--accent-green);
  flex-shrink: 0;
}

.about-image-wrapper {
  position: relative;
}

.about-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  transition: transform 0.4s var(--ease-expo-out);
}

.about-image:hover {
  transform: perspective(1000px) rotateY(-3deg) rotateX(2deg) scale(1.02);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-decoration {
  position: absolute;
  top: -20px;
  left: -20px;
  width: 80px;
  height: 80px;
  background: var(--primary-blue);
  opacity: 0.1;
  border-radius: 8px;
  z-index: -1;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* 产品服务区块 */
.products-section {
  background: var(--gray-3);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s var(--ease-expo-out);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1), 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-expo-out);
}

.product-card:hover .product-image img {
  transform: scale(1.08);
}

.product-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 115, 234, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
}

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

.product-view-btn {
  padding: 12px 24px;
  background: var(--white);
  color: var(--primary-blue);
  font-size: 14px;
  font-weight: 600;
  border-radius: 4px;
  transform: translateY(10px);
  opacity: 0;
  transition: all 0.3s var(--ease-expo-out);
}

.product-card:hover .product-view-btn {
  transform: translateY(0);
  opacity: 1;
}

.product-info {
  padding: 24px;
}

.product-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
  transition: color 0.3s var(--ease-smooth);
}

.product-card:hover .product-title {
  color: var(--primary-blue);
}

.product-desc {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.6;
}

/* 工艺流程区块 */
.process-section {
  background: var(--white);
}

.process-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(to right, var(--primary-blue), var(--accent-green));
  z-index: 0;
}

.process-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 15px;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-blue);
  margin: 0 auto 20px;
  transition: all 0.3s var(--ease-elastic);
}

.process-step:hover .step-number {
  background: var(--primary-blue);
  color: var(--white);
  transform: scale(1.1);
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.6;
}

/* 最新动态区块 */
.news-section {
  background: var(--gray-3);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.news-card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s var(--ease-expo-out);
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.news-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-expo-out);
}

.news-card:hover .news-image img {
  transform: scale(1.08);
}

.news-category {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background: var(--primary-blue);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  border-radius: 4px;
  transition: background 0.3s var(--ease-smooth);
}

.news-card:hover .news-category {
  background: #046dd9;
}

.news-content {
  padding: 24px;
}

.news-date {
  font-size: 13px;
  color: var(--gray-2);
  margin-bottom: 10px;
}

.news-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 12px;
  line-height: 1.4;
  transition: color 0.3s var(--ease-smooth);
}

.news-card:hover .news-title {
  color: var(--primary-blue);
}

.news-excerpt {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.6;
  margin-bottom: 16px;
}

.news-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-blue);
  transition: all 0.3s var(--ease-expo-out);
}

.news-link:hover {
  gap: 10px;
}

.news-link svg {
  width: 16px;
  height: 16px;
}

/* 页脚 */
.footer {
  background: var(--black);
  color: var(--white);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-logo {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-logo span {
  color: var(--primary-blue);
}

.footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s var(--ease-smooth);
}

.footer-social a:hover {
  background: var(--primary-blue);
  transform: scale(1.1);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--white);
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.3s var(--ease-smooth);
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary-blue);
  transition: width 0.3s var(--ease-expo-out);
}

.footer-links a:hover {
  color: var(--primary-blue);
}

.footer-links a:hover::after {
  width: 100%;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact svg {
  width: 18px;
  height: 18px;
  color: var(--primary-blue);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* 页面横幅 */
.page-banner {
  position: relative;
  height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  margin-top: 80px;
}

.page-banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}

.page-banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}

.page-banner-content {
  position: relative;
  z-index: 2;
}

.page-banner-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-banner-subtitle {
  font-size: 16px;
  opacity: 0.8;
}

/* 面包屑导航 */
.breadcrumb {
  padding: 20px 0;
  background: var(--gray-3);
}

.breadcrumb-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.breadcrumb a {
  color: var(--gray-2);
  transition: color 0.3s var(--ease-smooth);
}

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

.breadcrumb-current {
  color: var(--gray-1);
  font-weight: 500;
}

.breadcrumb-separator {
  color: var(--gray-2);
}

/* 关于我们页面 */
.about-page-section {
  padding: 80px 0;
}

.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.about-intro-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.about-intro-image img {
  width: 100%;
  height: auto;
}

.about-intro-content h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 20px;
}

.about-intro-content p {
  font-size: 16px;
  color: var(--gray-1);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* 企业文化 */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 60px;
}

.culture-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--gray-3);
  border-radius: 8px;
  transition: all 0.3s var(--ease-expo-out);
}

.culture-card:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-8px);
}

.culture-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  background: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.culture-card:hover .culture-icon {
  background: var(--white);
}

.culture-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary-blue);
}

.culture-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--black);
}

.culture-card:hover .culture-title {
  color: var(--white);
}

.culture-desc {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.6;
}

.culture-card:hover .culture-desc {
  color: rgba(255, 255, 255, 0.8);
}

/* 发展历程 */
.timeline {
  position: relative;
  padding: 40px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-blue);
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: 50%;
  position: relative;
  margin-bottom: 50px;
}

.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: 50%;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-blue);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--primary-blue);
  transform: translateX(-50%);
  z-index: 2;
}

.timeline-content {
  max-width: 400px;
  padding: 0 30px;
}

.timeline-year {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.timeline-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.6;
}

/* 产品页面 */
.product-filter {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  background: var(--white);
  border: 1px solid var(--gray-3);
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-1);
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
}

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

/* 产品详情页 */
.product-detail-section {
  padding: 60px 0;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.product-detail-images {
  position: relative;
}

.product-detail-main-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.product-detail-main-image img {
  width: 100%;
  height: auto;
}

.product-detail-thumbs {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.product-detail-thumb {
  width: 80px;
  height: 80px;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s var(--ease-smooth);
}

.product-detail-thumb.active,
.product-detail-thumb:hover {
  border-color: var(--primary-blue);
}

.product-detail-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-info h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 16px;
}

.product-detail-meta {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.product-detail-meta span {
  font-size: 14px;
  color: var(--gray-2);
}

.product-detail-meta span strong {
  color: var(--gray-1);
}

.product-detail-desc {
  font-size: 16px;
  color: var(--gray-1);
  line-height: 1.8;
  margin-bottom: 30px;
}

.product-detail-features {
  margin-bottom: 30px;
}

.product-detail-features h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 16px;
}

.product-detail-features ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.product-detail-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--gray-1);
}

.product-detail-features li svg {
  width: 18px;
  height: 18px;
  color: var(--accent-green);
}

/* 新闻页面 */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.news-item {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 30px;
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s var(--ease-expo-out);
}

.news-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.news-item-image {
  position: relative;
  overflow: hidden;
}

.news-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-expo-out);
}

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

.news-item-content {
  padding: 24px 24px 24px 0;
}

.news-item-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}

.news-item-category {
  padding: 4px 12px;
  background: var(--primary-blue);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  border-radius: 4px;
}

.news-item-date {
  font-size: 13px;
  color: var(--gray-2);
}

.news-item-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 12px;
  line-height: 1.4;
  transition: color 0.3s var(--ease-smooth);
}

.news-item:hover .news-item-title {
  color: var(--primary-blue);
}

.news-item-excerpt {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.6;
  margin-bottom: 16px;
}

/* 新闻详情页 */
.news-detail-section {
  padding: 60px 0;
}

.news-detail-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
}

.news-detail-category {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-blue);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  border-radius: 4px;
  margin-bottom: 20px;
}

.news-detail-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 20px;
  line-height: 1.3;
}

.news-detail-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 14px;
  color: var(--gray-2);
}

.news-detail-image {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 40px;
}

.news-detail-image img {
  width: 100%;
  height: auto;
}

.news-detail-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray-1);
}

.news-detail-content p {
  margin-bottom: 20px;
}

.news-detail-content h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--black);
  margin: 40px 0 20px;
}

/* 联系页面 */
.contact-section {
  padding: 60px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 20px;
}

.contact-info > p {
  font-size: 16px;
  color: var(--gray-2);
  line-height: 1.8;
  margin-bottom: 30px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gray-3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s var(--ease-smooth);
}

.contact-item:hover .contact-icon {
  background: var(--primary-blue);
}

.contact-icon svg {
  width: 22px;
  height: 22px;
  color: var(--primary-blue);
  transition: color 0.3s var(--ease-smooth);
}

.contact-item:hover .contact-icon svg {
  color: var(--white);
}

.contact-item-content h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 4px;
}

.contact-item-content p {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.6;
}

.contact-form {
  background: var(--gray-3);
  padding: 40px;
  border-radius: 8px;
}

.contact-form h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-1);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
  transition: all 0.3s var(--ease-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
}

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

/* 地图 */
.map-section {
  height: 400px;
  background: var(--gray-3);
}

.map-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gray-3) 0%, #e8e8e8 100%);
}

.map-placeholder-content {
  text-align: center;
  color: var(--gray-2);
}

.map-placeholder-content svg {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}

/* FAQ */
.faq-section {
  padding: 60px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--gray-3);
}

.faq-question {
  width: 100%;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  font-weight: 500;
  color: var(--gray-1);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: color 0.3s var(--ease-smooth);
}

.faq-question:hover {
  color: var(--primary-blue);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s var(--ease-smooth);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease-smooth);
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-answer p {
  padding-bottom: 20px;
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.8;
}

/* 动画类 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-expo-out), transform 0.6s var(--ease-expo-out);
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s var(--ease-expo-out), transform 0.6s var(--ease-expo-out);
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s var(--ease-expo-out), transform 0.6s var(--ease-expo-out);
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s var(--ease-expo-out), transform 0.6s var(--ease-expo-out);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* 错开动画 */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* 响应式设计 */
@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .about-grid,
  .about-intro,
  .product-detail-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .products-grid,
  .news-grid,
  .culture-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps {
    flex-wrap: wrap;
    gap: 30px;
  }
  
  .process-steps::before {
    display: none;
  }
  
  .process-step {
    flex: 0 0 calc(50% - 15px);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item,
  .timeline-item:nth-child(even) {
    padding-left: 60px;
    padding-right: 0;
    justify-content: flex-start;
  }
  
  .timeline-dot {
    left: 20px;
  }
  
  .news-item {
    grid-template-columns: 1fr;
  }
  
  .news-item-image {
    height: 200px;
  }
  
  .news-item-content {
    padding: 20px;
  }
}

@media (max-width: 768px) {
  .navbar {
    height: 64px;
  }
  
  .hero-carousel {
    height: 80vh;
  }
  
  .hero-title {
    font-size: 28px;
  }
  
  .hero-subtitle {
    font-size: 15px;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .about-title {
    font-size: 24px;
  }
  
  .about-features {
    grid-template-columns: 1fr;
  }
  
  .products-grid,
  .news-grid,
  .culture-grid {
    grid-template-columns: 1fr;
  }
  
  .process-step {
    flex: 0 0 100%;
  }
  
  .carousel-arrow {
    display: none;
  }
  
  .page-banner {
    height: 300px;
    margin-top: 64px;
  }
  
  .page-banner-title {
    font-size: 28px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .product-detail-features ul {
    grid-template-columns: 1fr;
  }
  
  .news-detail-title {
    font-size: 24px;
  }
  
  .contact-form {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 24px;
  }
  
  .btn-primary,
  .btn-secondary,
  .btn-white {
    padding: 10px 20px;
    font-size: 13px;
  }
  
  .section-header {
    margin-bottom: 40px;
  }
}

/* 减少动效 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .hero-bg {
    animation: none;
  }
}