.health-tool{
    max-width:760px;
    margin:24px auto;
}

.tool-box{
    border:1px solid #e5e7eb;
    border-radius:12px;
    padding:20px;
    box-shadow:0 2px 8px rgba(0,0,0,.05);
}

.tool-box h2,
.tool-box h3{
    margin:0 0 15px;
}

.tool-box label{
    display:block;
    margin:12px 0 5px;
    font-weight:600;
}

.tool-box input,
.tool-box select{
    width:100%;
    padding:12px;
    border:1px solid #d1d5db;
    border-radius:8px;
    box-sizing:border-box;
}

.tool-box button{
    width:100%;
    margin-top:15px;
    padding:12px;
    background:#0a493b;
    color:#fff;
    border:0;
    border-radius:8px;
    cursor:pointer;
    font-weight:600;
}

.tool-box button:hover{
    opacity:.9;
}

.result{
    margin-top:15px;
    padding:15px;
    border-radius:8px;
    border:1px solid #e5e7eb;
}