:root {
    --primary: #2c7be5;
    --text: #12263f;
    --background: #f5f7fa;
    --card-bg: #ffffff;
    --border: #d8e2ef;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}



.container-calc {
    max-width: 600px;
    width: 100%;
    text-align: center;
    margin: 70px auto;
    padding: 20px;
}

.construction-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
}

h1 {
    color: #2a5c91;
    margin-bottom: 20px;
    font-size: 24px;
}

p {
    margin-bottom: 25px;
    font-size: 16px;
}

.icon-c {
    font-size: 60px;
    margin-bottom: 20px;
    color: var(--primary);
}

.btn-c {
    display: inline-block;
    background-color: #2a5c91;
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s;
}

    .btn-c:hover {
        opacity: 0.9;
    }

@media (max-width: 480px) {
    .construction-card {
        padding: 20px;
    }

    h1 {
        font-size: 20px;
    }

    .icon {
        font-size: 50px;
    }
}