:root {
  --primary: #2c3e50;
  --secondary: #8e44ad;
  --accent: #00c6ff;
  --text: #f8f9fa;
  --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));
  color: var(--text);
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 20px 50px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(44, 62, 80, 0.9);
  padding: 15px 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.2);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

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

.nav-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

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

.hero {
  text-align: center;
  padding: 80px 0;
  position: relative;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
  background: linear-gradient(to right, #00c6ff, #0072ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 18px;
  max-width: 700px;
  margin: 0 auto 40px;
}

.notice {
  background: rgba(0, 198, 255, 0.1);
  border-left: 4px solid var(--accent);
  padding: 15px;
  margin: 30px 0;
  border-radius: 0 5px 5px 0;
}

.notice p {
  margin: 0;
}

article {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 40px;
  margin-bottom: 50px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

article h2 {
  font-size: 32px;
  margin-bottom: 30px;
  color: var(--accent);
  position: relative;
  padding-bottom: 15px;
}

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

article h3 {
  font-size: 24px;
  margin: 30px 0 20px;
  color: #fff;
}

article p {
  margin-bottom: 20px;
  font-size: 17px;
}

pre {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  overflow: auto;
  border-left: 4px solid var(--accent);
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  overflow: hidden;
}

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

th {
  background: rgba(0, 198, 255, 0.2);
  color: var(--accent);
}

tr:hover {
  background: rgba(0, 198, 255, 0.1);
}

.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin: 40px 0;
}

.img-card {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.img-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 198, 255, 0.3);
}

.img-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.img-card:hover img {
  transform: scale(1.05);
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 12px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  margin: 10px 0;
}

.button:hover {
  background: #0072ff;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 198, 255, 0.3);
}

.footer {
  text-align: center;
  padding: 30px 0;
  margin-top: 50px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
  .nav-links {
    gap: 15px;
  }
  
  .hero h1 {
    font-size: 36px;
  }
  
  article {
    padding: 30px 20px;
  }
  
  article h2 {
    font-size: 28px;
  }
  
  article h3 {
    font-size: 22px;
  }
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

.pulse {
  animation: pulse 2s ease-in-out infinite;
}