:root {
  --primary: #1e3c72;
  --secondary: #2a5298;
  --accent: #00c6ff;
  --text: #ffffff;
  --card-bg: rgba(255, 255, 255, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  background: linear-gradient(135deg, var(--primary), var(--secondary), #6a3093);
  color: var(--text);
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.header {
  text-align: center;
  padding: 40px 0;
  position: relative;
}

.header::after {
  content: "这是一个网页样式设计参考";
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 14px;
  opacity: 0.7;
}

h1, h2, h3, h4 {
  font-weight: 700;
  margin-bottom: 20px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

h2 {
  font-size: 28px;
  background: linear-gradient(90deg, var(--accent), #00ff7f);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}

h3 {
  font-size: 22px;
  color: var(--accent);
}

p {
  margin-bottom: 20px;
  font-size: 16px;
}

article {
  background: rgba(0,0,0,0.3);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 40px;
  margin-bottom: 40px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin: 40px 0;
}

.card {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 25px;
  transition: var(--transition);
  backdrop-filter: blur(5px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  border: 1px solid rgba(255,255,255,0.1);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

.card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: var(--transition);
}

.card:hover img {
  transform: scale(1.03);
}

.tag {
  display: inline-block;
  background: rgba(0,198,255,0.2);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  margin-right: 5px;
  margin-top: 10px;
}

pre {
  background: rgba(0,0,0,0.5);
  border-radius: 10px;
  padding: 20px;
  margin: 20px 0;
  overflow: auto;
  border-left: 3px solid var(--accent);
}

code {
  font-family: 'Courier New', monospace;
  color: #00ff7f;
}

.button {
  display: inline-block;
  background: linear-gradient(45deg, var(--accent), #0072ff);
  color: white;
  padding: 12px 25px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  margin: 10px 0;
}

.button:hover {
  background: linear-gradient(45deg, #00ff7f, var(--accent));
  box-shadow: 0 8px 15px rgba(0,0,0,0.2);
  transform: translateY(-2px);
}

.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.gallery-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  transition: var(--transition);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.gallery-img:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
  article {
    padding: 25px;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .image-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.floating {
  animation: float 3s ease-in-out infinite;
}

.decorative-element {
  position: absolute;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0,198,255,0.3), transparent 70%);
  border-radius: 50%;
  z-index: -1;
}

.decorative-element:nth-child(1) {
  top: 10%;
  left: 5%;
  animation: float 4s ease-in-out infinite;
}

.decorative-element:nth-child(2) {
  bottom: 15%;
  right: 5%;
  animation: float 5s ease-in-out infinite 1s;
}

.nav-links {
  display: flex;
  justify-content: center;
  margin: 30px 0;
  flex-wrap: wrap;
}

.nav-link {
  color: var(--text);
  text-decoration: none;
  margin: 0 15px;
  padding: 10px 0;
  position: relative;
  font-weight: 500;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.highlight {
  background: rgba(0,198,255,0.2);
  padding: 2px 5px;
  border-radius: 3px;
}