:root {
      --primary-color: #0074D9; /* 科技蓝 */
      --accent-color: #FF851B; /* 活力橙 */
      --background-color: #1a1a1a; /* 深色背景 */
      --text-color: #f0f0f0; /* 亮色文字 */
      --secondary-text-color: #cccccc;
      --border-radius: 10px;
      --font-family: 'Roboto', sans-serif;
      --transition-duration: 0.3s;
      --shadow-color: rgba(0, 0, 0, 0.2);
  }

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

  body {
      font-family: var(--font-family);
      background: linear-gradient(135deg, #1a1a1a, #333333);
      color: var(--text-color);
      line-height: 1.6;
      overflow-x: hidden;
  }

  .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background-color: rgba(0, 0, 0, 0.8);
      color: var(--text-color);
      padding: 15px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      z-index: 1000;
      box-shadow: 0 2px 10px var(--shadow-color);
      backdrop-filter: blur(10px);
  }

  .navbar .logo {
      font-size: 1.5rem;
      font-weight: bold;
      color: var(--accent-color);
  }

  .navbar .nav-links a {
      margin-left: 20px;
      text-decoration: none;
      color: var(--text-color);
      font-size: 1rem;
      transition: color var(--transition-duration) ease;
  }

  .navbar .nav-links a:hover {
      color: var(--accent-color);
  }

  .container {
      max-width: 1200px;
      margin: 100px auto 50px auto;
      padding: 0 20px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 50px;
  }

  @media (min-width: 768px) {
      .container {
          grid-template-columns: 70fr 25fr 5fr;
      }
  }

  .main-content {
      grid-column: 1 / 2;
  }

  .side-bar {
      grid-column: 2 / 3;
      position: relative;
  }

  .decorative-element {
      grid-column: 3 / 4;
      display: flex;
      justify-content: center;
      align-items: center;
  }

  .decorative-element img {
      width: 100px;
      height: 100px;
      border-radius: 50%;
      box-shadow: 0 4px 15px var(--shadow-color);
      transition: transform var(--transition-duration) ease;
  }

  .decorative-element img:hover {
      transform: scale(1.1);
  }

  article {
      background-color: rgba(255, 255, 255, 0.05);
      padding: 30px;
      border-radius: var(--border-radius);
      box-shadow: 0 4px 20px var(--shadow-color);
      backdrop-filter: blur(10px);
  }

  article h2, article h3, article h4 {
      color: var(--accent-color);
      margin-bottom: 20px;
      transition: font-weight var(--transition-duration) ease;
  }

  article h2:hover, article h3:hover, article h4:hover {
      font-weight: 700;
  }

  article p {
      margin-bottom: 20px;
      font-size: 16px;
      color: var(--text-color);
  }

  article pre {
      background-color: rgba(255, 255, 255, 0.1);
      padding: 15px;
      border-radius: var(--border-radius);
      overflow-x: auto;
      margin-bottom: 20px;
  }

  article code {
      color: var(--accent-color);
      font-family: 'Courier New', Courier, monospace;
  }

  .decorative-line {
      height: 2px;
      background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
      margin: 40px 0;
      border-radius: 5px;
  }

  .reference-note {
      text-align: center;
      font-size: 14px;
      color: var(--secondary-text-color);
      margin-top: 50px;
      font-style: italic;
  }

  /* Image Styles */
  .main-content img {
      width: 100%;
      border-radius: var(--border-radius);
      box-shadow: 0 4px 15px var(--shadow-color);
      transition: transform var(--transition-duration) ease;
      margin-bottom: 20px;
  }

  .main-content img:hover {
      transform: scale(1.05);
  }

  /* Additional Styles for Responsiveness */
  @media (max-width: 768px) {
      .navbar {
          flex-direction: column;
          align-items: flex-start;
      }

      .container {
          grid-template-columns: 1fr;
      }

      .decorative-element {
          display: none;
      }
  }

  /* Smooth Scroll */
  html {
      scroll-behavior: smooth;
  }

  /* Link Styles */
  a {
      color: var(--accent-color);
      text-decoration: none;
      position: relative;
  }

  a::after {
      content: '';
      position: absolute;
      width: 100%;
      transform: scaleX(0);
      height: 2px;
      bottom: -2px;
      left: 0;
      background-color: var(--accent-color);
      transform-origin: bottom right;
      transition: transform var(--transition-duration) ease;
  }

  a:hover::after {
      transform: scaleX(1);
      transform-origin: bottom left;
  }