:root {
  --primary: #0f2027;
  --secondary: #203a43;
  --accent: #00c6ff;
  --text: #f8f9fa;
  --card-bg: rgba(255, 255, 255, 0.08);
  --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

body {
  font-family: 'Roboto', 'Open Sans', sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: linear-gradient(135deg, var(--primary), var(--secondary), #2c5364);
  background-size: 400% 400%;
  animation: gradientAnimation 15s ease infinite;
  padding-top: 80px;
}

@keyframes gradientAnimation {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(32, 58, 67, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 0.5rem 0;
}

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

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

nav a:hover::after {
  width: 100%;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.hero {
  text-align: center;
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(90deg, var(--accent), #ffffff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: textGlow 3s ease-in-out infinite alternate;
}

@keyframes textGlow {
  from { text-shadow: 0 0 10px rgba(0, 198, 255, 0.3); }
  to { text-shadow: 0 0 20px rgba(0, 198, 255, 0.6); }
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 2rem;
  color: rgba(255, 255, 255, 0.8);
}

.notice {
  background: rgba(0, 198, 255, 0.1);
  border-left: 4px solid var(--accent);
  padding: 1rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
}

.notice p {
  color: var(--text);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 40px rgba(0, 198, 255, 0.2);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

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

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

.card p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
}

article {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 3rem;
  margin: 3rem 0;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

article h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
  position: relative;
  padding-bottom: 0.5rem;
}

article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

article h3 {
  font-size: 1.5rem;
  margin: 2rem 0 1rem;
  color: var(--accent);
}

article p {
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.8);
}

article strong {
  color: var(--accent);
}

pre {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  border-left: 4px solid var(--accent);
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

code {
  font-family: 'Courier New', monospace;
  color: var(--accent);
  background: rgba(0, 198, 255, 0.1);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

footer {
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
  background: rgba(32, 58, 67, 0.9);
  backdrop-filter: blur(10px);
}

@media (max-width: 768px) {
  nav ul {
    gap: 1rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  article {
    padding: 2rem;
  }
}

@media (max-width: 480px) {
  header {
    flex-direction: column;
    padding: 1rem;
  }
  
  nav ul {
    margin-top: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero {
    padding: 2rem 0;
  }
  
  article {
    padding: 1.5rem;
  }
}