* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }
        
        body {
            color: #333;
            line-height: 1.6;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* Шапка */
        header {
            background-color: #1a5276;
            color: white;
            padding: 20px 0;
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 24px;
            font-weight: bold;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 20px;
        }
        
        nav ul li a {
            color: white;
            text-decoration: none;
        }
        
        /* Герой-секция */
        .hero {
            background-color: #eaf2f8;
            padding: 60px 0;
            text-align: center;
        }
        
        .hero h1 {
            font-size: 36px;
            margin-bottom: 20px;
        }
        
        .hero p {
            font-size: 18px;
            margin-bottom: 30px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .btn {
            display: inline-block;
            background-color: #2e86c1;
            color: white;
            padding: 12px 24px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: bold;
        }
        
        /* Калькулятор */
        .calculator {
            padding: 40px 0;
            background-color: white;
        }
        
        .calculator h2 {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .calc-form {
            max-width: 600px;
            margin: 0 auto;
            padding: 20px;
            border: 1px solid #ddd;
            border-radius: 5px;
        }
        
        .form-group {
            margin-bottom: 15px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        
        .form-group input, .form-group select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }
        
        /* Услуги */
        .services {
            padding: 50px 0;
            background-color: #f8f9f9;
        }
        
        .services h2 {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }
        
        .service-card {
            background-color: white;
            padding: 20px;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            text-align: center;
        }
        
        /* Футер */
        footer {
            background-color: #1a5276;
            color: white;
            padding: 30px 0;
            text-align: center;
        }
        
        /* Адаптивность */
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                text-align: center;
            }
            
            nav ul {
                margin-top: 15px;
            }
            
            .hero h1 {
                font-size: 28px;
            }
        }