/* 基本样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f7fa;
}

a {
  text-decoration: none;
  color: inherit;
}

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

.container {
  width: 90%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 15px;
}

/* 顶部导航栏 */
header {
  background-color: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 0;
  flex-wrap: wrap;
}

.logo h1 {
  font-size: 24px;
  font-weight: bold;
  color: #3f51b5;
  margin: 0;
}

.nav-links {
  display: flex;
  gap: 25px;
}

.nav-links a {
  color: #555;
  font-weight: 500;
  font-size: 16px;
  position: relative;
  padding: 5px 0;
  transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: #3f51b5;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #3f51b5;
  transition: width 0.3s;
}

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

.search-box {
  display: flex;
  background-color: #f1f3f4;
  border-radius: 24px;
  padding: 5px 15px;
  max-width: 250px;
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  padding: 5px;
  width: 100%;
}

.search-box button {
  background: none;
  border: none;
  cursor: pointer;
  color: #5f6368;
}

.menu-toggle {
  display: none;
  font-size: 24px;
  cursor: pointer;
  color: #3f51b5;
}

/* 英雄区域 */
.hero {
  background: linear-gradient(135deg, #3f51b5, #6573c3);
  color: white;
  padding: 60px 0;
  text-align: center;
  margin-bottom: 30px;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.hero h2 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* 分类筛选 */
.category-filter {
  margin-bottom: 30px;
  background-color: #fff;
  padding: 15px 0;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05);
}

.filter-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  background: none;
  border: 1px solid #e0e0e0;
  padding: 8px 20px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: #666;
  transition: all 0.3s;
}

.filter-btn:hover {
  border-color: #3f51b5;
  color: #3f51b5;
}

.filter-btn.active {
  background-color: #3f51b5;
  border-color: #3f51b5;
  color: white;
}

/* 主内容区 */
#content-wrapper {
  padding: 20px 0 60px;
}

.software-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
}

.software-card {
  background-color: #fff;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}

.software-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.software-icon {
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f8f9fa;
}

.software-icon img {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.software-info {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.software-info h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #333;
}

.software-meta {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

.version {
  background-color: #e3f2fd;
  color: #1976d2;
  padding: 3px 8px;
  font-size: 12px;
  border-radius: 4px;
}

.tag {
  background-color: #f1f8e9;
  color: #689f38;
  padding: 3px 8px;
  font-size: 12px;
  border-radius: 4px;
}

.software-info p {
  font-size: 14px;
  color: #666;
  margin-bottom: 20px;
  flex-grow: 1;
}

.software-action {
  display: flex;
  gap: 10px;
  margin-top: auto;
}

.download-btn, .details-btn {
  padding: 10px 15px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: background-color 0.3s;
}

.download-btn {
  background-color: #3f51b5;
  color: white;
  flex-grow: 1;
  justify-content: center;
}

.download-btn:hover {
  background-color: #303f9f;
}

.details-btn {
  background-color: #f5f5f5;
  color: #555;
}

.details-btn:hover {
  background-color: #e0e0e0;
}

/* 页脚 */
footer {
  background-color: #fff;
  border-top: 1px solid #e0e0e0;
  padding: 30px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-info p {
  color: #666;
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: #555;
  font-size: 14px;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: #3f51b5;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .software-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 15px;
    padding: 15px 0;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .search-box {
    max-width: 100%;
    margin-top: 15px;
    order: 3;
  }
  
  .navbar {
    flex-wrap: wrap;
  }
  
  .hero h2 {
    font-size: 32px;
  }
  
  .hero p {
    font-size: 16px;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .software-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-buttons {
    overflow-x: auto;
    padding-bottom: 10px;
    justify-content: flex-start;
    flex-wrap: nowrap;
  }
}