:root {
    --green: #05f545;
    --blue: #007bff;
    --orange: #e67e22;
    --gray: #f0f6ff;
    --font: "Segoe UI", "Poppins", sans-serif;
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: var(--font);
    background: var(--gray);
    color: #2c3e50;
    scroll-behavior: smooth;
  }
  
  header {
    background: linear-gradient(to right, #007bff, #00b894);
    padding: 40px 20px;
    text-align: center;
    color: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  }
  
  header h1 {
    margin: 0;
    font-size: 2.5em;
  }
  
  .tagline {
    font-size: 1.2em;
    margin-top: 10px;
    opacity: 0.9;
  }
  
  .hero {
    text-align: center;
    margin: 40px 20px 10px;
  }
  
  .hero h2 {
    font-size: 1.8em;
    margin-bottom: 10px;
  }
  
  .hero p {
    font-size: 1.2em;
    color: #555;
  }
  
  .gauge-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    padding: 0 20px;
  }
  
  .gauge-row.large .gauge {
    width: 400px;
    height: 400px;
    transform: scale(1.03);
  }
  
  .gauge-row.small {
    overflow-x: auto;
    padding-bottom: 20px;
    flex-wrap: nowrap;
    justify-content: flex-start;
  }
  
  .gauge-row.small .gauge {
    width: 280px;
    min-width: 280px;
    height: 280px;
    flex-shrink: 0;
  }
  
  .gauge {
    background: white;
    border-radius: 16px;
    padding: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.06);
    transition: transform 0.2s ease;
  }
  
  .gauge:hover {
    transform: scale(1.02);
  }
  
  .info {
    max-width: 700px;
    margin: 60px auto;
    background: white;
    border-radius: 10px;
    padding: 20px;
    font-size: 0.95em;
    box-shadow: 0 0 8px rgba(0,0,0,0.05);
  }
  
  details summary {
    cursor: pointer;
    font-weight: bold;
    font-size: 1.1em;
    margin-bottom: 10px;
  }
  
  footer {
    text-align: center;
    font-size: 0.85em;
    padding: 40px 20px 20px;
    color: #666;
    background: #e9f3ff;
  }
  
  /* Responsive */
  @media (max-width: 768px) {
    .gauge-row.large {
      flex-wrap: nowrap;
      overflow-x: auto;
      justify-content: flex-start;
      gap: 20px;
      padding-bottom: 20px;
    }
  
    .gauge-row.large .gauge {
      width: 300px;
      min-width: 300px;
      height: 300px;
      flex-shrink: 0;
    }
  }