:root {
  --primary: #121D39;
  --secondary: #1A2D5A;
  --accent: #00BFA5;
  --highlight: #009688;
  --text: #E5E5E5;
  --light-bg: rgba(229, 229, 229, 0.1);
  --card-shadow: 0 10px 30px -10px rgba(0,0,0,0.3);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&family=Open+Sans:wght@400;600&display=swap');

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

body {
  font-family: 'Open Sans', sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  background-attachment: fixed;
  overflow-x: hidden;
}

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(18, 29, 57, 0.95);
  backdrop-filter: blur(10px);
  padding: 20px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

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

.logo {
  font-family: 'Roboto', sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 1px;
}

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

.nav-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: var(--transition);
}

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

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

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

.main {
  padding-top: 100px;
  padding-bottom: 80px;
}

.hero {
  height: 500px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  margin-bottom: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(0,191,165,0.1), transparent 70%);
  z-index: -1;
}

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

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}

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

.notice {
  background: rgba(0,191,165,0.1);
  padding: 15px 20px;
  border-left: 4px solid var(--accent);
  margin-bottom: 40px;
  border-radius: 0 4px 4px 0;
}

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

article {
  background: var(--light-bg);
  border-radius: 10px;
  padding: 40px;
  margin-bottom: 60px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(5px);
}

article h2 {
  font-family: 'Roboto', sans-serif;
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 15px;
}

article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

article h3 {
  font-family: 'Roboto', sans-serif;
  font-size: 1.5rem;
  color: var(--accent);
  margin: 30px 0 20px;
}

article p {
  margin-bottom: 20px;
  font-size: 1.05rem;
}

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

article em {
  font-style: italic;
  color: var(--highlight);
}

pre {
  background: rgba(0,0,0,0.3);
  border-radius: 8px;
  padding: 20px;
  margin: 25px 0;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  line-height: 1.5;
  border-left: 4px solid var(--accent);
}

code {
  font-family: 'Courier New', monospace;
  background: rgba(0,0,0,0.2);
  padding: 2px 5px;
  border-radius: 3px;
  font-size: 0.9rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  background: rgba(0,0,0,0.2);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid rgba(229,229,229,0.1);
}

th {
  background: rgba(0,191,165,0.2);
  font-weight: 600;
  color: var(--accent);
}

tr:hover {
  background: rgba(0,191,165,0.05);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.image-card {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  transition: var(--transition);
}

.image-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.image-card img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition);
}

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

.footer {
  background: rgba(18, 29, 57, 0.9);
  padding: 40px 0;
  text-align: center;
  margin-top: 80px;
}

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

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .nav-links {
    gap: 15px;
  }
  
  article {
    padding: 30px 20px;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
}

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

.floating {
  animation: float 6s ease-in-out infinite;
}

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

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

/* Scroll indicator */
.scroll-indicator {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--accent);
  font-size: 1.5rem;
  animation: bounce 2s infinite;
  cursor: pointer;
  z-index: 100;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
  40% { transform: translateY(-20px) translateX(-50%); }
  60% { transform: translateY(-10px) translateX(-50%); }
}