/* CSS Variables for Colors */
  :root {
    --primary-color: #8E44AD; /* 深紫色 */
    --secondary-color: #3498DB; /* 电光蓝 */
    --accent-color: #FFC300; /* 亮橙色 */
    --background-gradient: linear-gradient(to bottom, #111, #000);
    --text-color: #FFFFFF;
    --navbar-bg: rgba(0, 0, 0, 0.8);
    --card-bg: rgba(255, 255, 255, 0.1);
    --font-family-sans: 'Roboto', sans-serif;
    --font-family-mono: 'Fira Code', monospace;
    --transition-speed: 0.3s;
  }

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

  body {
    background: var(--background-gradient);
    color: var(--text-color);
    font-family: var(--font-family-sans);
    line-height: 1.6;
    overflow-x: hidden;
  }

  a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
  }

  a:hover {
    color: var(--accent-color);
  }

  /* Navbar Styles */
  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--navbar-bg);
    padding: 20px;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .navbar .logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--accent-color);
  }

  .navbar ul {
    list-style: none;
    display: flex;
    gap: 20px;
  }

  .navbar ul li a {
    font-size: 1rem;
    position: relative;
  }

  .navbar ul li a::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-speed) ease;
    position: absolute;
    bottom: -5px;
    left: 0;
  }

  .navbar ul li a:hover::after {
    width: 100%;
  }

  /* Main Content Styles */
  .container {
    display: flex;
    flex-direction: row;
    padding: 100px 50px 50px 50px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 20px;
  }

  .main-content {
    flex: 3;
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
  }

  .floating-window {
    flex: 1;
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 10px;
    position: sticky;
    top: 100px;
    backdrop-filter: blur(5px);
  }

  h1, h2, h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--secondary-color);
    margin-bottom: 20px;
  }

  p {
    margin-bottom: 15px;
  }

  pre {
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 15px;
  }

  code {
    font-family: var(--font-family-mono);
    color: var(--accent-color);
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
  }

  table, th, td {
    border: 1px solid var(--secondary-color);
  }

  th, td {
    padding: 10px;
    text-align: left;
  }

  th {
    background: rgba(255, 255, 255, 0.1);
  }

  .sloped-text {
    transform: skew(-10deg);
    display: inline-block;
    padding: 10px;
    background: var(--card-bg);
    border-radius: 5px;
  }

  .button {
    display: inline-block;
    padding: 10px 20px;
    background: var(--secondary-color);
    color: var(--text-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: box-shadow var(--transition-speed) ease;
  }

  .button:hover {
    box-shadow: 0 0 10px 5px var(--accent-color);
  }

  /* Image Styles */
  .images {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
  }

  .images img {
    width: 100%;
    max-width: 320px;
    border-radius: 10px;
  }

  /* Responsive Styles */
  @media (max-width: 1440px) {
    .container {
      max-width: 1100px;
    }
  }

  @media (max-width: 1200px) {
    .container {
      max-width: 1000px;
    }
  }

  @media (max-width: 1024px) {
    .container {
      flex-direction: column;
      padding: 100px 20px 20px 20px;
    }

    .floating-window {
      position: static;
      margin-top: 20px;
    }
  }

  @media (max-width: 768px) {
    .navbar {
      flex-direction: column;
      align-items: flex-start;
    }

    .navbar ul {
      flex-direction: column;
      gap: 10px;
      margin-top: 10px;
    }

    .images {
      justify-content: center;
    }
  }

  @media (max-width: 480px) {
    .navbar .logo {
      font-size: 1.2rem;
    }

    .navbar ul li a {
      font-size: 0.9rem;
    }

    .main-content, .floating-window {
      padding: 15px;
    }

    .images img {
      max-width: 100%;
    }
  }

  @media (max-width: 320px) {
    .navbar {
      padding: 15px;
    }

    .navbar .logo {
      font-size: 1rem;
    }

    .navbar ul li a {
      font-size: 0.8rem;
    }

    .button {
      padding: 8px 16px;
    }
  }

  /* Additional Styles */
  .highlight {
    color: var(--accent-color);
    font-weight: bold;
  }

  .tooltip {
    position: relative;
    display: inline-block;
  }

  .tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--secondary-color);
    color: var(--text-color);
    padding: 5px 10px;
    border-radius: 5px;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
    white-space: nowrap;
  }

  .tooltip:hover::after {
    opacity: 1;
  }