:root {
  --primary: #0f2027;
  --secondary: #203a43;
  --accent: #2ecc71;
  --highlight: #1e90ff;
  --text: #ffffff;
  --muted: #bdc3c7;
}

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

body {
  background: linear-gradient(135deg, var(--primary), var(--secondary), #2c5364);
  color: var(--text);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  padding-top: 80px;
}

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(32, 58, 67, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 15px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

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

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

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(46, 204, 113, 0.1), transparent 70%);
  z-index: -1;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--text), var(--highlight));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: fadeIn 1.5s ease;
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 30px;
  color: var(--muted);
}

.notice {
  background: rgba(0, 0, 0, 0.5);
  border-left: 5px solid var(--accent);
  padding: 20px;
  margin: 40px 0;
  border-radius: 0 8px 8px 0;
  animation: fadeIn 1s ease;
}

article {
  background: rgba(32, 58, 67, 0.7);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 40px;
  margin: 40px 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

article h2 {
  font-size: 2rem;
  margin-bottom: 25px;
  color: var(--highlight);
  position: relative;
  padding-bottom: 10px;
}

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

article p {
  margin-bottom: 25px;
  font-size: 1.1rem;
  line-height: 1.8;
}

article span {
  color: var(--accent);
  font-weight: bold;
}

pre {
  background: rgba(15, 32, 39, 0.8);
  border-radius: 10px;
  padding: 20px;
  margin: 30px 0;
  overflow-x: auto;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
  border-left: 4px solid var(--highlight);
}

code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  color: #f8f8f2;
}

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

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

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

.button {
  display: inline-block;
  background: linear-gradient(90deg, var(--highlight), var(--accent));
  color: var(--text);
  padding: 12px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(30, 144, 255, 0.4);
  margin: 20px 0;
}

.button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(30, 144, 255, 0.6);
}

.footer {
  text-align: center;
  padding: 40px 0;
  margin-top: 80px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
  color: var(--muted);
  font-size: 0.9rem;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 20px;
  }
  
  .nav-links {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  article {
    padding: 30px 20px;
  }
  
  article h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  article h2 {
    font-size: 1.5rem;
  }
  
  .gallery {
    grid-template-columns: 1fr;
  }
}