:root {
    --primary: #1E3A8A;
    --secondary: #3B82F6;
    --accent: #F97316;
    --light: #EFF6FF;
    --dark: #121212;
    --text: #333333;
    --white: #FFFFFF;
    --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;500;700&display=swap');

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

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

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

  .header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: 20px 0;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 100;
  }

  .header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  }

  .header p {
    font-size: 1.1rem;
    opacity: 0.9;
  }

  .notice {
    background: var(--accent);
    color: var(--white);
    padding: 10px;
    text-align: center;
    font-weight: 500;
    margin-bottom: 30px;
  }

  .split-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin: 40px 0;
  }

  .split-section {
    flex: 1;
    min-width: 500px;
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
  }

  .split-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
  }

  .decor-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
  }

  .decor-image:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  }

  h2, h3 {
    color: var(--primary);
    margin: 25px 0 15px;
    position: relative;
  }

  h2 {
    font-size: 1.8rem;
    padding-bottom: 10px;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
  }

  h3 {
    font-size: 1.4rem;
    margin-top: 30px;
  }

  p {
    margin-bottom: 20px;
    font-size: 1.05rem;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  th {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: 12px;
    text-align: left;
  }

  td {
    padding: 15px;
    border-bottom: 1px solid #eee;
  }

  pre {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    border-left: 4px solid var(--accent);
  }

  code {
    font-family: 'Roboto Mono', monospace;
    background: rgba(249, 115, 22, 0.1);
    padding: 2px 4px;
    border-radius: 3px;
    color: var(--accent);
  }

  .nav-tabs {
    display: flex;
    list-style: none;
    background: var(--white);
    border-radius: 8px;
    padding: 0;
    margin: 30px 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
  }

  .nav-tabs li {
    flex: 1;
    text-align: center;
  }

  .nav-tabs a {
    display: block;
    padding: 15px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
  }

  .nav-tabs a:hover {
    background: rgba(30, 58, 138, 0.05);
  }

  .nav-tabs a.active {
    color: var(--accent);
  }

  .nav-tabs a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent);
  }

  @media (max-width: 768px) {
    .split-section {
      min-width: 100%;
    }
    
    .image-grid {
      grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    h2 {
      font-size: 1.5rem;
    }
    
    h3 {
      font-size: 1.2rem;
    }
  }

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

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