:root {
    --primary: #2c3e50;
    --secondary: #8e44ad;
    --accent: #e67e22;
    --text-light: #ecf0f1;
    --text-muted: #bdc3c7;
    --card-bg: #34495e;
    --transition: all 0.3s ease;
  }

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    font-family: 'Open Sans', sans-serif;
    color: var(--text-light);
    line-height: 1.6;
    padding-top: 80px;
    min-height: 100%;
  }

  .header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(44, 62, 80, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
  }

  .header.scrolled {
    background: var(--primary);
  }

  .logo {
    font-family: 'Roboto', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: bold;
  }

  .nav {
    display: flex;
    gap: 2rem;
  }

  .nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
  }

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

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

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

  .hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(142, 68, 173, 0.1) 0%, rgba(44, 62, 80, 0) 70%);
    animation: rotate 20s linear infinite;
    z-index: -1;
  }

  @keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }

  .hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--text-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
  }

  .hero-subtitle {
    font-size: 1.2rem;
    max-width: 700px;
    margin-bottom: 2rem;
    color: var(--text-muted);
  }

  .notice {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 8px;
    margin: 2rem 0;
    border-left: 4px solid var(--accent);
    font-size: 0.9rem;
  }

  article {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    background: rgba(44, 62, 80, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  article h2 {
    font-size: 2rem;
    margin: 2rem 0 1rem;
    color: var(--text-light);
    position: relative;
    padding-bottom: 0.5rem;
  }

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

  article h3 {
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem;
    color: var(--text-light);
  }

  article p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-muted);
  }

  article em {
    color: var(--text-light);
    font-style: italic;
  }

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

  .image-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
  }

  .image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  }

  .image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }

  .image-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent 50%);
  }

  pre {
    background: var(--primary);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
    border-left: 4px solid var(--accent);
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--text-light);
    font-size: 0.9rem;
  }

  .language-css {
    color: #f8f8f2;
  }

  .token.selector {
    color: #f92672;
  }

  .token.property {
    color: #66d9ef;
  }

  .token.value {
    color: #a6e22e;
  }

  .token.punctuation {
    color: #f8f8f2;
  }

  .footer {
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    color: var(--text-muted);
    font-size: 0.9rem;
  }

  @media (max-width: 768px) {
    .header {
      flex-direction: column;
      padding: 1rem;
    }

    .nav {
      margin-top: 1rem;
      gap: 1rem;
    }

    .hero-title {
      font-size: 2rem;
    }

    article {
      padding: 1.5rem;
    }

    article h2 {
      font-size: 1.5rem;
    }

    article h3 {
      font-size: 1.2rem;
    }
  }

  @media (max-width: 480px) {
    .image-grid {
      grid-template-columns: 1fr;
    }
  }