:root {
  --main-color: #0D47A1;
  --accent-color: #00BCD4;
  --highlight-color: #FF5722;
  --bg-gradient: linear-gradient(135deg, #0D47A1 0%, #1E88E5 50%, #00BCD4 100%);
  --card-bg: rgba(255, 255, 255, 0.1);
  --text-color: #E3F2FD;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

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

body {
  background: var(--bg-gradient);
  color: var(--text-color);
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  min-height: 100%;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 20px 60px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 71, 161, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  padding: 15px 0;
}

.navbar {
  display: flex;
  justify-content: center;
  gap: 2px;
}

.nav-item {
  padding: 12px 24px;
  color: white;
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease;
  border-radius: 4px;
}

.nav-item:hover {
  background: var(--accent-color);
  transform: translateY(-2px);
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--highlight-color);
  transition: width 0.3s ease;
}

.nav-item:hover::after {
  width: 70%;
}

.banner {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
}

.banner h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #FFFFFF 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.banner p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 30px;
}

.notice {
  background: rgba(255, 255, 255, 0.2);
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 40px;
  text-align: center;
  border-left: 4px solid var(--highlight-color);
}

article {
  background: rgba(13, 71, 161, 0.7);
  backdrop-filter: blur(5px);
  border-radius: 15px;
  padding: 40px;
  box-shadow: var(--shadow);
  margin-bottom: 60px;
}

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

article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 3px;
  background: var(--highlight-color);
}

article h3 {
  font-size: 1.5rem;
  margin: 30px 0 15px;
  color: var(--accent-color);
}

article p {
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin: 40px 0;
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 25px;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  border-color: var(--accent-color);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

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

pre {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  padding: 20px;
  margin: 25px 0;
  overflow: auto;
  border-left: 4px solid var(--highlight-color);
}

code {
  font-family: 'Courier New', monospace;
  color: #E3F2FD;
}

.footer {
  text-align: center;
  padding: 30px 0;
  margin-top: 60px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.chart-container {
  height: 300px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  margin: 30px 0;
  position: relative;
  overflow: hidden;
}

.bar {
  position: absolute;
  bottom: 0;
  width: 30px;
  background: var(--highlight-color);
  animation: grow 2s infinite ease-in-out;
}

@keyframes grow {
  0%, 100% { height: 20%; }
  50% { height: 80%; }
}

.tab-content {
  opacity: 0;
  height: 0;
  overflow: hidden;
  transition: all 0.5s ease;
}

.tab-content.active {
  opacity: 1;
  height: auto;
}

.dashboard {
  display: flex;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 15px;
  padding: 30px;
  margin: 30px 0;
}

.assistant {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.assistant-icon {
  width: 40px;
  height: 40px;
  margin-right: 15px;
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .container {
    padding: 100px 15px 40px;
  }
  
  .banner h1 {
    font-size: 2.2rem;
  }
  
  article {
    padding: 25px;
  }
  
  .grid-container {
    grid-template-columns: 1fr;
  }
  
  .navbar {
    flex-wrap: wrap;
  }
  
  .nav-item {
    padding: 10px 15px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 80px 10px 30px;
  }
  
  article {
    padding: 20px;
  }
  
  article h2 {
    font-size: 1.8rem;
  }
  
  article h3 {
    font-size: 1.3rem;
  }
}