:root {
  --primary: linear-gradient(135deg, #1e3c72, #2a5298);
  --secondary: linear-gradient(45deg, #6a11cb, #2575fc);
  --accent: #ff6ec4;
  --text: #f0f0f0;
  --card-bg: rgba(255, 255, 255, 0.1);
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
}

body {
  background: var(--primary);
  color: var(--text);
  line-height: 1.6;
  min-height: 100%;
  overflow-x: hidden;
}

.header {
  position: relative;
  padding: 2rem;
  text-align: center;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  margin-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, #ff6ec4, #7873f5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.notice {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: rgba(0,0,0,0.7);
  padding: 10px 15px;
  border-radius: 5px;
  font-size: 0.9rem;
  z-index: 100;
}

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

.nav {
  position: sticky;
  top: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  display: flex;
  justify-content: center;
  z-index: 10;
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  transition: all 0.3s ease;
}

.nav-link:hover {
  background: rgba(255,255,255,0.1);
  color: var(--accent);
}

.article {
  padding: 2rem 0;
}

.article h2 {
  font-size: 2rem;
  margin: 2rem 0 1rem;
  color: #fff;
  position: relative;
  padding-bottom: 0.5rem;
}

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

.article h3 {
  font-size: 1.5rem;
  margin: 1.5rem 0 1rem;
  color: #fff;
}

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

.card {
  background: var(--card-bg);
  border-radius: 15px;
  backdrop-filter: blur(10px);
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,0.1);
}

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

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

.img-box {
  width: 150px;
  height: 150px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
}

.img-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

pre {
  background: rgba(0,0,0,0.3);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow: auto;
  border-left: 3px solid var(--accent);
}

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

ol {
  margin-left: 2rem;
  margin-bottom: 2rem;
}

ol li {
  margin-bottom: 1rem;
  padding-left: 1rem;
}

ol li span:first-child {
  font-weight: bold;
  color: var(--accent);
}

.button {
  display: inline-block;
  background: var(--secondary);
  color: white;
  padding: 12px 25px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 500;
  margin: 1rem 0;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.button:hover {
  transform: translateY(-3px);
  box-shadow: 0 7px 20px rgba(0,0,0,0.3);
  background: linear-gradient(45deg, #7873f5, #ff6ec4);
}

.footer {
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
  background: rgba(0,0,0,0.2);
  border-top: 1px solid rgba(255,255,255,0.1);
}

@media (max-width: 768px) {
  .nav-list {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
  
  .img-box {
    width: 120px;
    height: 120px;
  }
}

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

.star {
  position: absolute;
  background: white;
  border-radius: 50%;
  animation: float 3s ease-in-out infinite;
  opacity: 0.8;
}

.star:nth-child(1) {
  width: 3px;
  height: 3px;
  top: 10%;
  left: 20%;
  animation-delay: 0s;
}

.star:nth-child(2) {
  width: 2px;
  height: 2px;
  top: 30%;
  left: 50%;
  animation-delay: 0.5s;
}

.star:nth-child(3) {
  width: 4px;
  height: 4px;
  top: 60%;
  left: 30%;
  animation-delay: 1s;
}

.star:nth-child(4) {
  width: 3px;
  height: 3px;
  top: 80%;
  left: 70%;
  animation-delay: 1.5s;
}

.star:nth-child(5) {
  width: 2px;
  height: 2px;
  top: 40%;
  left: 80%;
  animation-delay: 2s;
}