:root {
  --primary: #1E90FF;
  --secondary: #9370DB;
  --accent: #00CED1;
  --dark: #0A192F;
  --light: rgba(255,255,255,0.85);
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, var(--dark), #162A47);
  color: var(--light);
  line-height: 1.6;
}

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  backdrop-filter: blur(10px);
  background: rgba(10, 25, 47, 0.8);
  z-index: 1000;
  padding: 15px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-link {
  color: var(--light);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.hero {
  min-height: 600px;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 50%, rgba(30, 144, 255, 0.2) 0%, transparent 50%);
  z-index: -1;
}

.hero-content {
  max-width: 600px;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.notice {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(5px);
  padding: 15px;
  border-radius: 8px;
  margin: 40px 0;
  border-left: 3px solid var(--accent);
}

.notice-text {
  margin: 0;
  font-size: 0.9rem;
}

.content-section {
  padding: 80px 0;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 40px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.card {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 30px;
  transition: all 0.3s ease;
  box-shadow: 0 10px 20px 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(0,0,0,0.2);
  border-color: rgba(255,255,255,0.2);
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--accent);
}

.card-img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 20px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: transform 0.3s ease;
}

.card-img:hover {
  transform: scale(1.02);
}

.code-block {
  background: rgba(0,0,0,0.3);
  border-radius: 8px;
  padding: 20px;
  margin: 30px 0;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  border-left: 3px solid var(--accent);
}

.code-block pre {
  margin: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(5px);
  border-radius: 10px;
  overflow: hidden;
}

th {
  background: rgba(30, 144, 255, 0.2);
  padding: 15px;
  text-align: left;
}

td {
  padding: 15px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer {
  background: rgba(10, 25, 47, 0.8);
  padding: 40px 0;
  text-align: center;
  margin-top: 80px;
}

.footer-text {
  opacity: 0.7;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .nav-links {
    gap: 15px;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
}

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

.floating {
  animation: float 4s ease-in-out infinite;
}