/*
Design philosophy: 阳光童趣运动表现主义。本文件用活力橙、阳光黄、斜向赛道动势、圆角号码牌、暖光动效和移动优先排版，强化“运动成长与体教融合”的阳光可信感。任何新增样式都应先判断：它是否强化而非稀释这一设计哲学？
*/
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