pub const BTN_OUTLINE: &str = "relative px-4 py-2 rounded-full text-sm font-medium text-paper-primary border border-paper-border hover:border-paper-accent hover:text-paper-accent transition-all cursor-pointer";Expand description
描边次要按钮（posts 重建、system 刷新列表）：relative 以承载 spinner 叠加层。