/* 现代极简风格样式 */
:root {
  --primary-color: #0B3D91; /* 深邃钴蓝 */
  --secondary-color: #1A56DB; /* 钴蓝变体 */
  --accent-color: #39FF14; /* 荧光绿 */
  --text-color: #E0E0E0; /* 亮白 */
  --text-light: #B0B0B0; /* 银灰 */
  --bg-color: #0A0A0A; /* 深黑背景 */
  --card-bg: #1A1A2E; /* 深色卡片 */
  --card-bg-hover: #16213E; /* 卡片悬停 */
  --border-color: #333344; /* 深色边框 */
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 10px 20px rgba(11, 61, 145, 0.4);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Orbitron', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  padding: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(11, 61, 145, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(57, 255, 20, 0.05) 0%, transparent 50%);
  background-attachment: fixed;
}

/* 网站标题样式 */
.site-title {
  font-size: 3em;
  margin: 0;
  padding: 30px 0 20px;
  color: var(--text-color);
  font-weight: 700;
  text-align: center;
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
  position: relative;
}

.site-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

/* 容器样式 */
.container {
  width: 100%;
  max-width: 90%;
  margin: 0 auto;
  padding: 30px 20px;
  display: flex;
  gap: 40px;
}

/* 侧边栏样式 */
.sidebar {
  width: 280px;
  flex-shrink: 0;
  position: sticky;
  top: 30px;
  height: fit-content;
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 25px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.sidebar h2 {
  font-size: 1.3em;
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--accent-color);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
  font-weight: 600;
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.3);
}

/* 搜索框样式 */
.search-box {
  margin-bottom: 30px;
}

.search-box input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  transition: var(--transition);
  margin-bottom: 10px;
  background-color: rgba(26, 26, 46, 0.8);
  color: var(--text-color);
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 15px rgba(57, 255, 20, 0.3);
}

.search-box button {
  width: 100%;
  padding: 12px;
  background-color: var(--primary-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.search-box button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.2), transparent);
  transition: left 0.5s;
}

.search-box button:hover::before {
  left: 100%;
}

.search-box button:hover {
  background-color: var(--secondary-color);
  transform: translateY(-1px);
  box-shadow: 0 0 20px rgba(11, 61, 145, 0.5);
  border-color: var(--accent-color);
}

/* 分类导航样式 */
.category-nav {
  list-style-type: none;
  padding-left: 0;
  margin: 0;
}

.category-nav li {
  margin-bottom: 8px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.category-nav li:hover {
  border-color: var(--accent-color);
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.2);
}

.category-nav a {
  color: var(--text-color);
  text-decoration: none;
  transition: var(--transition);
  display: block;
  padding: 10px 15px;
  font-weight: 400;
  position: relative;
  overflow: hidden;
}

.category-nav a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.1), transparent);
  transition: left 0.5s;
}

.category-nav a:hover::before {
  left: 100%;
}

.category-nav a:hover {
  color: var(--accent-color);
  background-color: rgba(11, 61, 145, 0.2);
  transform: translateX(5px);
  text-shadow: 0 0 5px rgba(57, 255, 20, 0.5);
}

/* 主内容样式 */
.main-content {
  flex: 1;
}

.main-content h1 {
  font-size: 3em;
  margin-bottom: 40px;
  color: var(--text-color);
  font-weight: 700;
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 3px solid var(--accent-color);
  display: inline-block;
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
  position: relative;
  left: 50%;
  transform: translateX(-50%);
}

.main-content h2 {
  font-size: 1.8em;
  margin-top: 50px;
  margin-bottom: 25px;
  color: var(--accent-color);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
  font-weight: 600;
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.2);
}

/* 软件卡片网格布局 - 每行最多4个卡片，宽度自适应 */
.software-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

/* 软件卡片样式 - 缩小高度 */
.software-card {
  display: block;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 12px;
  transition: var(--transition);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--text-color);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  height: auto;
}

.software-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.software-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(11, 61, 145, 0.1) 0%, rgba(57, 255, 20, 0.05) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.software-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-color);
  background-color: var(--card-bg-hover);
}

.software-card:hover::after {
  opacity: 1;
}

.software-card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1em;
  color: var(--text-color);
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-shadow: 0 0 5px rgba(11, 61, 145, 0.5);
}

.software-card p {
  margin-bottom: 0;
  font-size: 0.85em;
  color: var(--text-light);
  line-height: 1.3;
  min-height: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 响应式设计 - 每行最多4个卡片，宽度自适应 */
@media (max-width: 1200px) {
  .container {
    max-width: 95%;
  }
  
  .software-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
  }
}

@media (max-width: 1024px) {
  .container {
    max-width: 98%;
    gap: 30px;
  }
  
  .sidebar {
    width: 250px;
    padding: 20px;
  }
  
  .software-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
  }
  
  .main-content h1 {
    font-size: 2.5em;
  }
  
  .main-content h2 {
    font-size: 1.6em;
  }
  
  .software-card {
    padding: 10px;
  }
  
  .software-card h3 {
    font-size: 0.95em;
  }
  
  .software-card p {
    font-size: 0.8em;
  }
}

@media (max-width: 768px) {
  .container {
    flex-direction: column;
    padding: 20px 15px;
  }
  
  .sidebar {
    width: 100%;
    position: static;
    margin-bottom: 30px;
  }
  
  .software-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
  }
  
  .main-content h1 {
    font-size: 2.2em;
    text-align: center;
  }
  
  .main-content h2 {
    font-size: 1.5em;
  }
  
  .software-card {
    padding: 10px;
  }
  
  .software-card h3 {
    font-size: 0.95em;
  }
  
  .software-card p {
    font-size: 0.8em;
  }
}

@media (max-width: 480px) {
  .software-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
  }
  
  .main-content h1 {
    font-size: 2em;
  }
  
  .main-content h2 {
    font-size: 1.3em;
  }
  
  .software-card {
    padding: 8px;
  }
  
  .software-card h3 {
    font-size: 0.9em;
  }
  
  .software-card p {
    font-size: 0.75em;
  }
  
  .sidebar {
    padding: 15px;
  }
}