semi-design/packages/semi-foundation/switch/animation.scss

$transition_duration-switch-bg: var(--semi-transition_dulation-faster);//开关-背景色-动画持续时间
$transition_function-switch-bg: var(--semi-transition_function-easeIn);//开关-背景色-过渡曲线
$transition_delay-switch-bg: var(--semi-transition_delay-fastest);//开关-背景色-延迟时间