/* Stage 21.4 — balanced readable width after the full-width presentation hotfix. */
.mirai-app{width:100%;max-width:980px;margin-left:auto;margin-right:auto;box-sizing:border-box}
.mirai-shell{width:100%;max-width:980px;margin-left:auto;margin-right:auto;box-sizing:border-box}
.mirai-kiseki-record{width:100%;max-width:980px;margin-left:auto;margin-right:auto;box-sizing:border-box}
@media(max-width:980px){.mirai-app,.mirai-shell,.mirai-kiseki-record{width:100%;max-width:100%}}