:root {
  --primary: #0F2027;
  --secondary: #203A43;
  --accent: #4A90E2;
  --highlight: #8E2DE2;
  --text: #FFFFFF;
  --bg-gradient: linear-gradient(135deg, var(--primary), var(--secondary), #2C5364);
  --card-bg: rgba(32, 58, 67, 0.7);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.header {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.header::after {
  content: "";
  display: block;
  width: 150px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
  margin: 1.5rem auto;
  border-radius: 2px;
}

h1, h2, h3, h4 {
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

h1 {
  font-size: 2.5rem;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

h2 {
  font-size: 1.8rem;
  margin-top: 2.5rem;
  position: relative;
  padding-left: 1rem;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 4px;
  background: linear-gradient(var(--accent), var(--highlight));
}

h3 {
  font-size: 1.4rem;
  margin-top: 2rem;
  color: var(--accent);
}

p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.article-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(74, 144, 226, 0.2);
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.code-block {
  background: rgba(15, 32, 39, 0.8);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow: auto;
  border-left: 4px solid var(--accent);
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  line-height: 1.5;
}

.code-block code {
  color: #f8f8f2;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(74, 144, 226, 0.2);
}

th {
  background: rgba(32, 58, 67, 0.8);
  color: var(--accent);
}

tr:hover {
  background: rgba(74, 144, 226, 0.1);
}

.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.img-card {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
  height: 300px;
}

.img-card:hover {
  transform: scale(1.03);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

.img-card:hover img {
  transform: scale(1.1);
}

.notice {
  background: rgba(74, 144, 226, 0.1);
  border-left: 4px solid var(--accent);
  padding: 1rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
}

.nav-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.nav-link {
  padding: 0.8rem 1.5rem;
  background: rgba(74, 144, 226, 0.2);
  border-radius: 30px;
  color: var(--text);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 500;
  border: 1px solid rgba(74, 144, 226, 0.3);
}

.nav-link:hover {
  background: rgba(74, 144, 226, 0.4);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .img-grid {
    grid-template-columns: 1fr;
  }
}

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

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