Clarifying substitution rules
I need to be accurate about substitution rules. If a player is sent off before kick-off, they can be replaced by one of the substitutes, and it doesn’t count against the total number of substitutions allowed. But if a named substitute is sent off before kick-off, they can't be replaced, which reduces the number of available substitutes. I should also recall the details from the 2016/2017 changes regarding this. I want to ensure I'm certain before stating anything.Clarifying substitution and apparel rules
I need to clarify that when a player is substituted before the match, it doesn’t count against the allowed substitutions during the game, but it does reduce the pool of substitutes. So I can say that the team can still make the same number of substitutions. Precise phrasing would be helpful here. Regarding clothing rules, undershorts and undershirts must match the main colors. If they're incorrect, the player can’t play. If there’s an argument, the ref may sanction. I should offer to help verify this further.
看点在于“装备违规+赛前言行升级”。简单说法与规则点如下：
- 装备规则：按足球竞赛规则第4条，内穿紧身短裤/打底裤必须与外短裤主色一致（上衣打底需与袖色一致）。不合规者不得上场；拒不改正或反复违规可被纪律处罚。
- 为何能赛前出红牌：裁判权力从进场检查装备就生效。若球员在赛前对抗命令、辱骂/侮辱性语言或严重不当行为，裁判可直接出红牌。
- 被罚下的后果：若被罚下的是已列入首发的球员，通常可由已报名单中的替补递补进首发；替补席人数减少，但比赛中的换人数上限不变。 
- “颜色”本身通常不致红牌：多数情况下只是要求立刻更换或不得出场；出现红牌，多半是争吵升级到冒犯性言行或拒不服从。
- 想继续的话：我可以帮你核实具体比赛与当事人信息，给出权威报道链接/视频；或写一篇简短资讯稿、社媒帖/标题备选；也可提供相关规则原文＋中文要点。你希望哪种？
