/* ===== Variables ===== */
:root {
  --primary-color: #e74c3c; /* 江西红 */
  --secondary-color: #f39c12; /* 江西橙 */
  --dark-color: #2c3e50;
  --light-color: #ecf0f1;
  --text-color: #333;
  --text-light: #777;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* ===== Base Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: #fff;
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== Banner Styles ===== */
.banner {
  position: relative;
  height: 70vh;
  min-height: 500px;
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.7)), 
              url('https://example.com/jiangxi-bg.jpg') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  overflow: hidden;
  
  &::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" fill="%23fff"></path><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" opacity=".5" fill="%23fff"></path><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z" fill="%23fff"></path></svg>');
    background-size: cover;
    z-index: 1;
  }

  .banner-content {
    position: relative;
    z-index: 2;
    padding: 0 20px;
    max-width: 800px;
    margin: 0 auto;
    
    h1 {
      font-size: 3.5rem;
      margin-bottom: 1rem;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
      color: white;
    }
    
    p {
      font-size: 1.2rem;
      opacity: 0.9;
      margin-bottom: 2rem;
    }
  }
}

/* Scroll Indicator */
.scroll-indicator {
  margin-top: 3rem;
  display: inline-block;
  
  span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid white;
    border-radius: 15px;
    position: relative;
    
    &::before {
      content: '';
      position: absolute;
      top: 8px;
      left: 50%;
      width: 6px;
      height: 6px;
      background: white;
      border-radius: 50%;
      transform: translateX(-50%);
      animation: scrollIndicator 2s infinite;
    }
  }
}

@keyframes scrollIndicator {
  0% {
    opacity: 1;
    transform: translateY(0) translateX(-50%);
  }
  100% {
    opacity: 0;
    transform: translateY(20px) translateX(-50%);
  }
}

/* ===== Section Styles ===== */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 0;
}

.section {
  margin-bottom: 4rem;
  
  &:last-child {
    margin-bottom: 0;
  }
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
  
  h2 {
    font-size: 2.2rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
    
    &::after {
      content: '';
      position: absolute;
      bottom: -10px;
      left: 50%;
      transform: translateX(-50%);
      width: 80px;
      height: 3px;
      background: var(--primary-color);
    }
  }
}

.jiangxi-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 1rem 0;
  
  .line {
    width: 80px;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--primary-color), transparent);
    
    &:first-child {
      background: linear-gradient(to right, transparent, var(--primary-color));
    }
    
    &:last-child {
      background: linear-gradient(to left, transparent, var(--primary-color));
    }
  }
  
  .icon {
    margin: 0 1rem;
    color: var(--primary-color);
    font-size: 1.2rem;
  }
}

/* ===== Card Styles ===== */
.about-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.about-item {
  background: white;
  border-radius: 10px;
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  z-index: 1;
  
  &::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
  }
  
  &:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    
    &::before {
      height: 10px;
    }
    
    .card-icon {
      transform: scale(1.1);
      color: var(--primary-color);
    }
    
    .jiangxi-pattern {
      opacity: 0.1;
    }
  }
  
  .card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
  }
  
  h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
  }
  
  p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
  }
}

.jiangxi-pattern {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 150px;
  height: 150px;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M20,20 L80,20 L80,80 L20,80 Z" fill="none" stroke="%23e74c3c" stroke-width="2" stroke-dasharray="5,5"/><circle cx="50" cy="50" r="10" fill="%23f39c12"/></svg>');
  opacity: 0.05;
  z-index: -1;
  transition: var(--transition);
}

/* ===== Back to Top Button ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  
  svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
  }
  
  &:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
  }
  
  &.visible {
    opacity: 1;
    visibility: visible;
  }
}

/* ===== Responsive Styles ===== */
@media (max-width: 992px) {
  .banner {
    height: 60vh;
    
    h1 {
      font-size: 2.8rem;
    }
  }
}

@media (max-width: 768px) {
  .banner {
    height: 50vh;
    min-height: 400px;
    
    h1 {
      font-size: 2.2rem;
    }
    
    p {
      font-size: 1rem;
    }
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .section-title h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 576px) {
  .banner {
    height: 40vh;
    
    h1 {
      font-size: 1.8rem;
    }
  }
  
  .back-to-top {
    width: 40px;
    height: 40px;
    bottom: 20px;
    right: 20px;
    
    svg {
      width: 18px;
      height: 18px;
    }
  }
}
/* ===== Footer Styles ===== */
.footer {
  background-color: #2c3e50;
  color: #ecf0f1;
  padding: 3rem 0 0;
  font-size: 0.9rem;
  
  .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  
  .footer-column {
    h3 {
      color: white;
      margin-bottom: 1.5rem;
      font-size: 1.1rem;
      position: relative;
      padding-bottom: 0.5rem;
      
      &::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 40px;
        height: 2px;
        background: #e74c3c;
      }
    }
    
    ul {
      list-style: none;
      
      li {
        margin-bottom: 0.8rem;
        display: flex;
        align-items: center;
        
        i {
          margin-right: 0.5rem;
          width: 1rem;
          text-align: center;
        }
        
        a {
          color: #bdc3c7;
          text-decoration: none;
          transition: color 0.3s ease;
          
          &:hover {
            color: #e74c3c;
          }
        }
      }
    }
  }
  
  .copyright {
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 2rem;
    background-color: rgba(0, 0, 0, 0.2);
    color: #bdc3c7;
    font-size: 0.8rem;
  }
}

/* Ensure Font Awesome icons display properly */
.fas, .fab {
  font-style: normal;
}

/* Responsive adjustments for footer */
@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 480px) {
  .footer-content {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
  }
  
  .footer-column {
    margin-bottom: 1.5rem;
  }
}