body {
        margin: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(to right, #141e30, #243b55);
        color: #fff;
      }
          .tools-container {
      max-width: 1000px;
      margin: 40px auto;
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 20px;
    }
    .tool-card {
      background: linear-gradient(135deg, #1a2980 0%, #26d0ce 100%);
      border-radius: 10px;
      padding: 20px;
      transition: transform 0.3s ease;
    }
    .tool-card:hover {
      transform: translateY(-5px);
    }
    .tool-icon {
      font-size: 2.5em;
      margin-bottom: 15px;
      color: white;
    }
    .tool-badge {
      background: #ff9900;
      color: black;
      padding: 3px 10px;
      border-radius: 20px;
      font-size: 0.8em;
      float: right;
    }
    .download-btn {
      display: block;
      background: #00ffcc;
      color: #000;
      text-align: center;
      padding: 8px;
      border-radius: 5px;
      margin-top: 15px;
      text-decoration: none;
      font-weight: bold;
    }
      .main-header {
        background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
        padding: 0;
        position: sticky;
        top: 0;
        z-index: 1000;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
      }
      
      .header-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
      }
      
      .logo {
        font-size: 1.8em;
        font-weight: bold;
        color: #00ffff;
        display: flex;
        align-items: center;
      }
      
      .logo i {
        margin-right: 10px;
      }
      
      .main-nav {
        display: flex;
      }
      
      .main-nav a {
        color: #fff;
        text-decoration: none;
        padding: 20px 15px;
        transition: all 0.3s ease;
        position: relative;
        font-weight: 500;
      }
      
      .main-nav a:hover {
        background: rgba(255, 255, 255, 0.1);
        color: #00ffcc;
      }
      
      .main-nav a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        width: 0;
        height: 3px;
        background: #00ffcc;
        transition: all 0.3s ease;
      }
      
      .main-nav a:hover::after {
        width: 100%;
        left: 0;
      }
      
      .mobile-menu-btn {
        display: none;
        background: none;
        border: none;
        color: white;
        font-size: 1.5em;
        cursor: pointer;
      }
      
      .banner {
        background: url('https://images.unsplash.com/photo-1602524205899-f9f2601236b1?fit=crop&w=1500&q=80') center/cover;
        height: 100px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-shadow: 2px 2px 5px black;
        animation: fadeIn 2s ease;
        position: relative;
      }
      
      .banner::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
      }
      
      .banner h2 {
        font-size: 2.5rem;
        z-index: 1;
        text-align: center;
        padding: 0 20px;
      }
      
      @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
      }
      
      .content {
        max-width: 800px;
        margin: 40px auto;
        background: rgba(0,0,0,0.4);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 0 20px rgba(0,0,0,0.5);
        animation: floatUp 1s ease-out;
        backdrop-filter: blur(10px);
      }
      
      @keyframes floatUp {
        from { transform: translateY(50px); opacity: 0; }
        to { transform: translateY(0); opacity: 1; }
      }
      
      h2 {
        color: #00ffcc;
        border-bottom: 2px solid #00ffcc;
        padding-bottom: 10px;
        margin-top: 30px;
      }
      
      ol {
        padding-left: 20px;
      }
      
      li {
        margin-bottom: 15px;
        line-height: 1.6;
        position: relative;
        padding-left: 30px;
      }
      
      li::before {
        content: '→';
        color: #00ffcc;
        position: absolute;
        left: 0;
      }
      
      .video-container {
        position: relative;
        padding-bottom: 56.25%;
        height: 0;
        overflow: hidden;
        margin: 30px 0;
        border-radius: 10px;
      }
      
      .video-container iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
      }
      
      footer {
        text-align: center;
        padding: 30px;
        background: linear-gradient(to right, #0f2027, #203a43);
        color: #aaa;
        margin-top: 50px;
      }
      
      .social-links {
        margin-top: 20px;
      }
      
      .social-links a {
        color: #aaa;
        margin: 0 10px;
        font-size: 1.5em;
        transition: color 0.3s ease;
      }
      
      .social-links a:hover {
        color: #00ffcc;
      }
      
      @media (max-width: 768px) {
        .header-container {
          flex-direction: column;
          padding: 10px;
        }
        
        .main-nav {
          display: none;
          width: 100%;
          flex-direction: column;
        }
        
        .main-nav.active {
          display: flex;
        }
        
        .main-nav a {
          padding: 12px;
          text-align: center;
          border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .mobile-menu-btn {
          display: block;
          position: absolute;
          top: 15px;
          right: 20px;
        }
        
        .banner h2 {
          font-size: 1.8rem;
        }
        
        .content {
          margin: 20px;
          padding: 20px;
        }
      }