/* 基础样式 - 以LOGO绿色系为主色调 */
:root {
  --primary: #78c850; /* LOGO主绿色 */
  --primary-dark: #3e7614; /* LOGO叶子深绿色 */
  --primary-light: #a6e072; /* 浅绿色变体 */
  --primary-bg: #f0f7ea; /* 极浅绿色背景 */
  --text-dark: #333333; /* 近黑色文字 */
  --text-medium: #555555; /* 中灰色文字 */
  --text-light: #ffffff; /* 浅灰色文字 */
  --white: #ffffff;
  --shadow-light: 0 5px 15px rgba(62, 118, 20, 0.1);
  --shadow-medium: 0 15px 30px rgba(62, 118, 20, 0.15);
  --border-radius: 8px;
  --primary-color: #78c850;
  --background-light: #f8f9fa;
  --border-color: #e0e0e0;
  --container-width: 1080px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

body {
  font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: #ffffff;
  opacity: 0;
  animation: fadeIn 0.8s ease-out forwards;
}

html {
  scroll-behavior: smooth;
}

/* 内容容器统一样式 */
.container, 
.header-container,
.banner,
.footer .container {
  width: var(--container-width);
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding: 0 15px;
  box-sizing: border-box;
}

/* 确保轮播盒子内容居中 */
.banner, 
.section-heading, 
.feature-grid,
.product-showcase,
.news-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
}

a {
  text-decoration: none;
  color: var(--primary-dark);
  transition: color 0.3s ease;
}

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

ul {
  list-style: none;
}

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

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5em;
  color: var(--text-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

/* 按钮样式 */
.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 500;
  border: none;
  transition: all 0.3s ease;
  display: inline-block;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(120, 200, 80, 0.3);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(62, 118, 20, 0.4);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 10px 28px;
  border-radius: 50px;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-block;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-3px);
}

/* 头部样式 - 优化导航布局 */
header {
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px; /* 稍微降低高度 */
  padding: 0 15px;
  max-width: 1080px; /* 与容器宽度保持一致 */
  margin: 0 auto;
}

.logo {
  flex: 0 0 auto;
  margin-right: 15px;
}

.logo img {
  height: 60px; /* 调整LOGO尺寸 */
  width: auto;
  display: block;
}

nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

nav ul {
  display: flex;
  padding: 0;
  margin: 0;
  list-style: none;
  justify-content: center;
  align-items: center;
}

nav ul li {
  margin: 0 6px; /* 减小导航项间距 */
}

nav ul li a {
  color: var(--text-dark);
  text-decoration: none;
  padding: 6px 10px;
  font-size: 14px; /* 减小导航字体大小 */
  font-weight: 500;
  display: block;
  transition: all 0.3s ease;
  white-space: nowrap;
}

nav ul li a.active,
nav ul li a:hover {
  color: var(--primary-dark);
  background-color: var(--primary-bg);
  border-radius: 4px;
}

.contact-number {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  color: var(--primary-dark);
  background-color: var(--primary-bg);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  margin-left: 15px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--primary-dark);
  margin-left: 10px;
  cursor: pointer;
}

/* 响应式调整 */
@media (max-width: 1000px) {
  nav ul li a {
    padding: 6px 8px;
    font-size: 13px;
  }
  
  .contact-number {
    font-size: 13px;
    padding: 6px 10px;
  }
  
  .logo img {
    height: 50px;
  }
}

@media (max-width: 900px) {
  .mobile-menu-btn {
    display: block;
  }
  
  nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--white);
    z-index: 100;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
  }
  
  nav ul {
    flex-direction: column;
    padding: 20px 0;
  }
  
  nav ul li {
    margin: 0;
    width: 100%;
    text-align: center;
  }
  
  nav ul li a {
    padding: 12px 15px;
    border-radius: 0;
  }
}

/* 轮播图区域优化 */
.banner {
  position: relative;
  height: 480px;
  overflow: hidden;
  margin-bottom: 50px;
  max-width: 1080px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
  padding: 0;
}

.banner-slides {
  height: 100%;
  width: 100%;
  display: flex;
  transition: transform 0.5s ease-in-out;
  position: relative;
}

.banner-slide {
  position: relative;
  flex: 0 0 100%;
  height: 100%;
  width: 100%;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-slide::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.4);
}

.banner-content {
  position: relative;
  color: var(--white);
  max-width: 800px;
  width: 90%;
  z-index: 2;
  padding: 40px;
  background-color: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  backdrop-filter: blur(5px);
  text-align: center;
  margin: 0 auto;
  box-sizing: border-box;
  animation: fadeIn 1s ease-in-out;
}

.banner-content h2 {
  font-size: 42px;
  margin-bottom: 20px;
  font-weight: 700;
  color: var(--white);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 1s ease-out;
  line-height: 1.2;
}

.banner-content p {
  font-size: 18px;
  margin-bottom: 30px;
  line-height: 1.5;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 1s ease-out 0.2s backwards;
}

.banner-content .btn-primary {
  animation: fadeInUp 1s ease-out 0.4s backwards;
  font-size: 16px;
  padding: 12px 35px;
  border-radius: 50px;
  background-color: var(--primary);
  color: var(--white);
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  border: none;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.banner-content .btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.3);
}

.banner-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.banner-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.banner-dot.active {
  background-color: white;
}

/* 响应式调整 */
@media (max-width: 1140px) {
  .container {
    width: 100%;
    padding: 0 15px;
  }
  
  .header-container {
    height: auto;
    padding: 15px 20px;
    flex-wrap: wrap;
  }
  
  .logo {
    margin-right: 20px;
  }
  
  nav {
    order: 3;
    width: 100%;
    margin-top: 15px;
  }
  
  nav ul {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  nav ul li {
    margin: 5px;
  }
  
  .contact-number {
    margin-left: auto;
  }
  
  .banner {
    height: 450px;
  }
  
  .banner-content h2 {
    font-size: 32px;
  }
  
  .feature-grid, 
  .news-grid, 
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .product-showcase {
    flex-direction: column;
  }
  
  .product-image, 
  .product-info {
    width: 100%;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .banner {
    height: 400px;
  }
  
  .banner-content {
    left: 5%;
    right: 5%;
    max-width: 90%;
    padding: 15px;
  }
  
  .banner-content h2 {
    font-size: 28px;
  }
  
  .banner-content p {
    font-size: 15px;
  }
  
  .feature-grid, 
  .news-grid, 
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .header-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .logo {
    margin-right: 0;
    margin-bottom: 10px;
  }
  
  .contact-number {
    margin: 10px 0;
    order: 2;
  }
  
  .banner {
    height: 350px;
  }
  
  .banner-content h2 {
    font-size: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* 产品网格布局优化 */
.product-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  padding: 2rem 0;
}

.product-card {
  background: var(--white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: transform 0.3s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(62, 118, 20, 0.15);
}

.product-card.active {
  transform: scale(1.02);
  box-shadow: 0 10px 25px rgba(62, 118, 20, 0.2);
  border: 2px solid var(--primary-dark);
}

/* 页面过渡动画 */
.page-transition {
  animation: fadeIn 0.5s ease-in;
}

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

/* 特点部分 */
.features {
  padding: 80px 0;
  background-color: var(--primary-bg);
}

.section-heading {
  text-align: center;
  margin-bottom: 50px;
  width: 100%;
}

.section-heading h2 {
  font-size: 36px;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.section-heading h2:after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--primary);
}

.section-heading p {
  color: var(--text-medium);
  max-width: 700px;
  margin: 30px auto 0;
  font-size: 16px;
  line-height: 1.7;
}

.feature-grid,
.news-grid,
.product-grid {
  width: 100%;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px; /* 减小网格间距 */
}

.feature-item {
  background-color: var(--white);
  border-radius: var(--border-radius);
  padding: 40px 30px;
  box-shadow: var(--shadow-light);
  text-align: center;
  transition: all 0.3s ease;
  border-bottom: 3px solid transparent;
}

.feature-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-medium);
  border-bottom: 3px solid var(--primary);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background-color: var(--primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  transition: all 0.3s ease;
}

.feature-item:hover .feature-icon {
  background-color: var(--primary);
}

.feature-icon img {
  width: 40px;
  height: 40px;
  transition: all 0.3s ease;
}

.feature-item:hover .feature-icon img {
  filter: brightness(10);
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 15px;
}

.feature-desc {
  color: var(--text-medium);
  font-size: 15px;
  line-height: 1.7;
}

/* 产品展示区域 */
.product-section {
  padding: 80px 0; /* 减少上下内边距 */
  background-color: var(--white);
}

.product-showcase {
  display: flex;
  align-items: center;
  background-color: var(--primary-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.product-image {
  flex: 1;
  padding: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.product-image img {
  max-width: 100%;
  height: auto;
  max-height: 400px;
  transition: all 0.5s ease;
}

.product-showcase:hover .product-image img {
  transform: scale(1.05) rotate(2deg);
}

.product-info {
  flex: 1;
  padding: 40px 50px;
}

.product-tag {
  display: inline-block;
  background-color: var(--primary-dark);
  color: var(--white);
  padding: 5px 15px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
}

.product-name {
  font-size: 32px;
  margin-bottom: 15px;
}

.product-desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-medium);
  margin-bottom: 25px;
}

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

.product-feature {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}

.product-feature:before {
  content: "✓";
  display: inline-block;
  width: 24px;
  height: 24px;
  background-color: var(--primary);
  color: var(--white);
  border-radius: 50%;
  text-align: center;
  line-height: 24px;
  margin-right: 15px;
  flex-shrink: 0;
}

.product-price {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 25px;
}

/* 产品展示网格 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 80px;
}

.product-item {
  background-color: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  border-bottom: 3px solid transparent;
}

.product-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-medium);
  border-bottom: 3px solid var(--primary);
}

.product-item .product-image {
  height: 280px;
  background-color: var(--primary-bg);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.product-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background-color: #e53935;
  color: var(--white);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 2px 5px rgba(229, 57, 53, 0.3);
  z-index: 2;
}

.product-item .product-info {
  padding: 25px;
}

.product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

/* 新闻资讯部分 */
.news-section {
  padding: 80px 0; /* 减少上下内边距 */
  background-color: var(--primary-bg);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.news-item {
  background-color: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
}

.news-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-medium);
}

.news-image {
  height: 200px;
  overflow: hidden;
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.5s ease;
}

.news-item:hover .news-image img {
  transform: scale(1.1);
}

.news-content {
  padding: 25px;
}

.news-date {
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 10px;
}

.news-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 15px;
  transition: all 0.3s ease;
}

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

.news-excerpt {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-medium);
  margin-bottom: 20px;
}

.news-link {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
}

.news-link:hover {
  color: var(--primary);
  transform: translateX(5px);
}

/* 页脚样式 */
footer {
  background-color: #283618;
  color: var(--white);
  padding: 70px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 50px;
  margin-bottom: 60px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 18px;
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 15px;
}

.footer-col h4:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: all 0.3s;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--white);
  transform: translateX(5px);
}

.social-icons {
  display: flex;
  gap: 15px;
  margin-bottom: 30px;
  justify-content: center;
}

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

.social-icons a:hover {
  background-color: var(--primary);
  transform: translateY(-5px);
}

.social-icons img {
  width: 20px;
  height: 20px;
}

.footer-info {
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
}

.footer-info p {
  margin-bottom: 10px;
  font-size: 14px;
}

/* 品牌故事页面样式 */
.page-banner {
  height: 350px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
  margin-bottom: 80px;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

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

.page-banner h1 {
  font-size: 48px;
  margin-bottom: 15px;
  color: var(--white);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  animation: fadeInDown 1s ease-out;
}

.page-banner p {
  font-size: 18px;
  max-width: 600px;
  margin: 0 auto;
  animation: fadeInUp 1s ease-out 0.2s backwards;
  color: var(--white);
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 响应式调整 - 优化移动设备适配 */
@media (max-width: 1140px) {
  .container {
    width: 100%;
    padding: 0 15px;
  }
  
  .header-container {
    height: auto;
    padding: 15px 20px;
    flex-wrap: wrap;
  }
  
  .logo {
    margin-right: 20px;
  }
  
  nav {
    order: 3;
    width: 100%;
    margin-top: 15px;
  }
  
  nav ul {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  nav ul li {
    margin: 5px;
  }
  
  .contact-number {
    margin-left: auto;
  }
  
  .banner {
    height: 450px;
  }
  
  .banner-content h2 {
    font-size: 32px;
  }
  
  .feature-grid, 
  .news-grid, 
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .product-showcase {
    flex-direction: column;
  }
  
  .product-image, 
  .product-info {
    width: 100%;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .banner {
    height: 400px;
  }
  
  .banner-content {
    left: 5%;
    right: 5%;
    max-width: 90%;
    padding: 15px;
  }
  
  .banner-content h2 {
    font-size: 28px;
  }
  
  .banner-content p {
    font-size: 15px;
  }
  
  .feature-grid, 
  .news-grid, 
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .header-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .logo {
    margin-right: 0;
    margin-bottom: 10px;
  }
  
  .contact-number {
    margin: 10px 0;
    order: 2;
  }
  
  .banner {
    height: 350px;
  }
  
  .banner-content h2 {
    font-size: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

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

@keyframes slideInLeft {
  from {
    transform: translateX(-50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

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

.fade-in {
  opacity: 0;
  animation: fadeIn 1s ease-out forwards;
}

.slide-up {
  opacity: 0;
  animation: slideInUp 1s ease-out forwards;
}

.slide-left {
  opacity: 0;
  animation: slideInLeft 1s ease-out forwards;
}

.slide-right {
  opacity: 0;
  animation: slideInRight 1s ease-out forwards;
}

.delay-100 {
  animation-delay: 0.1s;
}

.delay-200 {
  animation-delay: 0.2s;
}

.delay-300 {
  animation-delay: 0.3s;
}

.delay-400 {
  animation-delay: 0.4s;
}

.delay-500 {
  animation-delay: 0.5s;
}

/* 动画相关样式 */
.slide-up, .slide-left, .slide-right, .fade-in {
    opacity: 0;
    transition: all 0.8s ease-out;
}

.slide-up {
    transform: translateY(50px);
}

.slide-left {
    transform: translateX(-50px);
}

.slide-right {
    transform: translateX(50px);
}

.slide-up.animate, 
.slide-left.animate, 
.slide-right.animate, 
.fade-in.animate {
    opacity: 1;
    transform: translate(0, 0);
}

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }