BEIRUT, Lebanon — They are getting used to fewer explosions, and to fewer ambulances racing through their war-ravaged cities. Now, under a tentative cease-fire across Syria, people have more time to think about longer-term concerns.

We’ve been keeping in touch with Syrians from all over the country since the truce took effect Monday night. They’re sharing their thoughts, experiences, videos and photos — and their doubts.

President Bashar al-Assad’s supporters and opponents alike share a sense of misgiving. They know the cease-fire was negotiated between Russia and the United States, over their heads. They do not know its details, and they do not know if anyone — the world powers or their own putative leaders, whether the opposition or the government — has their interests in mind.