css怎么设置边框向外翻

如图，怎么将边框设置成红线圈起来那样的向外的弧度。可以具体一点吗？
可以用伪类来写，两个class，四个伪类，两个灰色，两个白色
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            padding: 100px;
        }

        .box {
            padding: 100px;
        }

        .text {
            background-color: #ddd;
            display: inline-block;
            padding: 10px 12px;
            color: rgb(94, 155, 248);
            border-radius: 12px 0 0 12px;
            position: relative;
            margin: 0;
        }

        .text::after {
            content: "";
            height: 20px;
            width: 10%;
            background-color: #ddd;
            position: absolute;
            top: -20px;
            right: 0;
        }

        .text::before {
            content: "";
            height: 20px;
            width: 100%;
            border-radius: 0 0 12px 0;
            background-color: #fff;
            position: absolute;
            top: -20px;
            left: 0;
            z-index: 1;
        }

        .text1{
            position: relative;
            display: inline-block;
        }

        .text1::after {
            content: "";
            height: 20px;
            width: 10%;
            background-color: #ddd;
            position: absolute;
            bottom: -20px;
            right: 0;
        }

        .text1::before {
            content: "";
            height: 20px;
            width: 100%;
            border-radius: 0 12px 0 0;
            background-color: #fff;
            position: absolute;
            bottom: -20px;
            left: 0;
            z-index: 1;
        }
    </style>
</head>

<body>
    <div class="box">
        <div class="text1">
            <p class="text">车辆进出预约</p>
        </div>
    </div>
</body>

</html>