/* 基础样式与变量定义 */
:root {
  --primary-color: #0A192F; /* 深蓝色背景 */
  --secondary-color: #1B263B; /* 辅助深蓝色 */
  --accent-color-purple: #9B59B6; /* 霓虹紫 */
  --accent-color-green: #2ECC71; /* 电光绿 */
  --text-color: #C8D0E7; /* 主文本颜色 */
  --link-color: #64FFDA; /* 链接颜色 */
  --font-family: 'Roboto', sans-serif;
  --transition-speed: 0.3s;
  --border-radius: 8px;
}

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

body {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-color);
  font-family: var(--font-family);
  line-height: 1.6;
  padding: 20px;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color var(--transition-speed);
}

a:hover {
  color: var(--accent-color-green);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
}

header h1 {
  font-size: 2rem;
  color: var(--accent-color-purple);
}

.navbar {
  position: fixed;
  top: 50%;
  left: 20px;
  transform: translateY(-50%);
  background-color: rgba(0, 0, 0, 0.7);
  padding: 15px;
  border-radius: var(--border-radius);
}

.navbar a {
  display: block;
  margin: 10px 0;
  color: var(--link-color);
  transition: color var(--transition-speed);
}

.navbar a:hover {
  color: var(--accent-color-purple);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 3fr 1fr;
  gap: 20px;
}

main {
  background-color: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

aside {
  background-color: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

footer {
  text-align: center;
  padding: 20px 0;
  color: var(--text-color);
}

h2, h3 {
  color: var(--accent-color-purple);
  margin-bottom: 15px;
}

p {
  margin-bottom: 15px;
}

pre {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 15px;
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin-bottom: 15px;
}

code {
  color: var(--accent-color-green);
  font-family: 'Courier New', Courier, monospace;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 15px;
}

table, th, td {
  border: 1px solid rgba(200, 208, 231, 0.5);
}

th, td {
  padding: 10px;
  text-align: left;
}

th {
  background-color: rgba(100, 255, 218, 0.2);
  color: var(--accent-color-green);
}

img {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: var(--border-radius);
  margin: 10px 0;
}

.cube {
  width: 100px;
  height: 100px;
  perspective: 800px;
  margin: 20px auto;
}

.cube .face {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: var(--accent-color-green);
  opacity: 0.9;
  transform-style: preserve-3d;
}

.cube .front {
  transform: translateZ(50px);
}

.cube .back {
  transform: translateZ(-50px) rotateY(180deg);
}

.object:hover {
  animation: rotate 2s infinite linear;
}

@keyframes rotate {
  from { transform: rotateY(0deg); }
  to { transform: rotateY(360deg); }
}

button, .button {
  background-color: var(--accent-color-purple);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-speed);
}

button:hover, .button:hover {
  background-color: var(--accent-color-green);
}

@media (max-width: 1440px) {
  .container {
    grid-template-columns: 1fr 3fr 1fr;
  }
}

@media (max-width: 1200px) {
  .container {
    grid-template-columns: 1fr 3fr;
  }
  .navbar {
    left: 10px;
  }
}

@media (max-width: 1024px) {
  .container {
    grid-template-columns: 1fr 2fr;
  }
}

@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
  }
  .navbar {
    position: static;
    transform: none;
    margin-bottom: 20px;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.5rem;
  }
}

@media (max-width: 320px) {
  header h1 {
    font-size: 1.2rem;
  }
}

.visual-impact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.visual-impact img {
  flex: 1 1 150px;
}