* { margin: 0; padding: 0; box-sizing: border-box; }
      body { font-family: 'Inter', sans-serif; line-height: 1.6; color: #333; }
      .container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
      header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.1); padding: 15px 0; position: sticky; top: 0; z-index: 100; }
      header .container { display: flex; align-items: center; justify-content: space-between; }
      .logo img { height: 40px; }
      nav ul { display: flex; list-style: none; }
      nav ul li { margin-left: 20px; }
      nav ul li a { text-decoration: none; color: #333; font-weight: 500; }
      
      .header-actions { display: flex; align-items: center; gap: 20px; }
      .language-switcher { display: flex; gap: 10px; }
      .lang-switch { 
        padding: 4px 8px; 
        text-decoration: none; 
        color: #666; 
        border-radius: 4px; 
        font-size: 14px; 
        font-weight: 500;
        transition: all 0.2s;
      }
      .lang-switch:hover { background: #f5f5f5; color: #333; }
      .lang-switch.active { background: #635bff; color: white; }
      
      .btn { display: inline-block; padding: 8px 16px; border-radius: 4px; text-decoration: none; font-weight: 500; }
      .btn-primary { background: #635bff; color: white; }
      .btn-secondary { border: 1px solid #635bff; color: #635bff; }
      .btn-large { padding: 12px 24px; font-size: 18px; }
      .hero { padding: 80px 0; text-align: center; background-color: #f9f9ff; }
      .hero h1 { font-size: 42px; margin-bottom: 20px; color: #333; }
      .hero p { font-size: 20px; color: #666; margin-bottom: 30px; max-width: 800px; margin-left: auto; margin-right: auto; }
      .hero-image { margin-top: 50px; }
      .hero-image img { max-width: 100%; border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
      
      .features { padding: 80px 0; background-color: #fff; }
      .features h2 { text-align: center; margin-bottom: 50px; font-size: 36px; }
      .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
      .feature-item { padding: 30px; border-radius: 8px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); transition: transform 0.3s; }
      .feature-item:hover { transform: translateY(-5px); }
      .feature-item h3 { margin-bottom: 15px; color: #635bff; }
      
      footer { padding: 30px 0; background: #f9f9f9; text-align: center; margin-top: 80px; }
      
      @media (max-width: 768px) {
        .feature-grid { grid-template-columns: 1fr; }
        .header-actions { flex-direction: column; gap: 15px; }
        nav ul { display: none; }
        .hero h1 { font-size: 32px; }
        .hero p { font-size: 18px; }
      }