:root {
    --primary: #EAECC6;
    --secondary: #87CEEB;
    --accent: #FFB6C1;
    --dark: #333333;
    --light: #ffffff;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

  @import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&family=Great+Vibes&display=swap');

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

  body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.8;
    color: var(--dark);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    overflow-x: hidden;
  }

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

  /* Header Styles */
  .header {
    background: var(--light);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
  }

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

  .logo {
    font-family: 'Great Vibes', cursive;
    font-size: 28px;
    color: var(--dark);
    text-decoration: none;
    background: linear-gradient(45deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

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

  .nav-link {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: var(--transition);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transition: var(--transition);
  }

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

  /* Hero Section */
  .hero {
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: 0.3;
    z-index: -1;
    animation: float 8s ease-in-out infinite;
  }

  .hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
    opacity: 0.3;
    z-index: -1;
    animation: float 10s ease-in-out infinite reverse;
  }

  @keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-20px, 20px); }
  }

  .hero h1 {
    font-family: 'Great Vibes', cursive;
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero p {
    max-width: 700px;
    margin: 0 auto 30px;
    font-size: 18px;
    color: var(--dark);
  }

  .notice {
    background: var(--light);
    padding: 15px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    max-width: 500px;
    margin: 30px auto;
    font-size: 14px;
    color: #666;
  }

  /* Article Styles */
  .article-container {
    background: var(--light);
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 50px;
    margin: 50px 0;
    position: relative;
    overflow: hidden;
  }

  .article-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  }

  article h2 {
    font-family: 'Great Vibes', cursive;
    font-size: 36px;
    margin-bottom: 30px;
    color: var(--dark);
    position: relative;
    display: inline-block;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50%;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
  }

  article h3 {
    font-size: 24px;
    margin: 40px 0 20px;
    color: var(--dark);
    position: relative;
    padding-left: 20px;
  }

  article h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
  }

  article p {
    margin-bottom: 20px;
    font-size: 17px;
    line-height: 1.8;
  }

  /* Code Block Styles */
  pre {
    background: #2d2d2d;
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    position: relative;
  }

  pre::before {
    content: 'CSS';
    position: absolute;
    top: 0;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 5px 15px;
    border-radius: 0 0 10px 0;
    font-size: 14px;
    font-weight: bold;
  }

  code {
    font-family: 'Courier New', monospace;
    color: #f8f8f2;
    font-size: 15px;
    line-height: 1.5;
  }

  /* Image Gallery */
  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .gallery-item {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    aspect-ratio: 1/1;
  }

  .gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  }

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

  .gallery-item:hover img {
    transform: scale(1.05);
  }

  /* Card Styles */
  .card-section {
    margin: 50px 0;
  }

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

  .card {
    background: var(--light);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
  }

  .card-image {
    height: 200px;
    overflow: hidden;
  }

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

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

  .card-content {
    padding: 20px;
  }

  .card-title {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--dark);
  }

  .card-desc {
    color: #666;
    margin-bottom: 15px;
    font-size: 15px;
  }

  .card-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .keyword {
    background: #f0f8ff;
    color: var(--secondary);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
  }

  /* Footer */
  .footer {
    background: var(--dark);
    color: var(--light);
    padding: 50px 0 20px;
    text-align: center;
    margin-top: 100px;
  }

  .footer p {
    opacity: 0.7;
    font-size: 14px;
  }

  /* Responsive */
  @media (max-width: 768px) {
    .nav {
      display: none;
    }
    
    .hero h1 {
      font-size: 36px;
    }
    
    .article-container {
      padding: 30px;
    }
    
    .card-grid {
      grid-template-columns: 1fr;
    }
  }

  /* Animations */
  @keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  .fade-in {
    opacity: 0;
    animation: fadeIn 1s forwards;
  }

  @keyframes fadeIn {
    to { opacity: 1; }
  }

  .delay-1 { animation-delay: 0.2s; }
  .delay-2 { animation-delay: 0.4s; }
  .delay-3 { animation-delay: 0.6s; }