:root {
  --primary-color: #1E3A8A;
  --secondary-color: #6B7280;
  --accent-color1: #F59E0B;
  --accent-color2: #10B981;
  --background-gradient: linear-gradient(135deg, #1E3A8A, #3B82F6);
  --text-color: #F3F4F6;
  --card-bg: rgba(255, 255, 255, 0.1);
}

@font-face {
  font-family: 'TechFont';
  src: url('https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxK.woff2') format('woff2');
}

body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  background: var(--background-gradient);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

.header-notice {
  position: fixed;
  top: 70px;
  right: 20px;
  background: rgba(0,0,0,0.7);
  padding: 10px 15px;
  border-radius: 20px;
  font-size: 12px;
  z-index: 1001;
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(30, 58, 138, 0.9);
  color: white;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
}

nav a {
  color: white;
  margin: 0 15px;
  text-decoration: none;
  transition: all 0.3s ease;
  font-weight: 500;
}

nav a:hover {
  color: var(--accent-color1);
  transform: translateY(-2px);
}

.container {
  max-width: 1200px;
  margin: 100px auto 50px;
  padding: 0 20px;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 500px;
  text-align: 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 50% 50%, rgba(30, 58, 138, 0.3), transparent 70%);
  z-index: -1;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #FFFFFF, #F59E0B);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin-bottom: 40px;
}

.decorative-image {
  border-radius: 20px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
  margin: 20px;
  width: 320px;
  height: 320px;
  object-fit: cover;
}

.decorative-image:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

.image-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 50px 0;
}

article {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 40px;
  margin-bottom: 50px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  border: 1px solid rgba(255,255,255,0.1);
}

article h2 {
  font-size: 2.2rem;
  color: white;
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 15px;
}

article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color1), var(--accent-color2));
}

article h3 {
  font-size: 1.8rem;
  color: var(--accent-color1);
  margin: 40px 0 20px;
}

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

pre {
  background: rgba(0,0,0,0.3);
  border-radius: 10px;
  padding: 20px;
  overflow-x: auto;
  margin: 30px 0;
  border-left: 4px solid var(--accent-color2);
}

code {
  font-family: 'Courier New', monospace;
  color: #F59E0B;
}

.card {
  background: rgba(255,255,255,0.1);
  border-radius: 15px;
  padding: 30px;
  margin: 30px 0;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
  border: 1px solid rgba(255,255,255,0.05);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.2);
  background: rgba(255,255,255,0.15);
}

.footer {
  text-align: center;
  padding: 30px;
  margin-top: 50px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  article {
    padding: 20px;
  }
  
  nav {
    flex-direction: column;
    padding: 15px;
  }
  
  nav a {
    margin: 10px 0;
  }
  
  .header-notice {
    top: 120px;
    right: 10px;
  }
}

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

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

.tech-element {
  position: absolute;
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
  filter: blur(20px);
  z-index: -1;
}

.tech-element:nth-child(1) {
  top: 20%;
  left: 10%;
  width: 200px;
  height: 200px;
}

.tech-element:nth-child(2) {
  bottom: 15%;
  right: 10%;
  width: 150px;
  height: 150px;
}

.tech-element:nth-child(3) {
  top: 60%;
  left: 30%;
}