{activeTab === "ocr" ? (
            <div className="h-full overflow-y-auto px-4 py-3">
              <div className="grid gap-4 lg:grid-cols-[1.3fr_minmax(0,1fr)]">
                <div className="space-y-4">
                  <div className="rounded-lg border border-border/70 bg-white p-3 shadow-sm">
                    <p className="text-sm font-semibold text-foreground">引用记录</p>
                    <p className="text-xs text-muted-foreground">选中文本后点击“生成引用”，即可复制链接到导图或笔记。</p>
                    <div className="mt-2 rounded-lg border border-dashed border-border/70 bg-muted/40 p-2">
                      <p className="text-xs text-muted-foreground">当前选区</p>
                      <p className="mt-1 line-clamp-3 text-sm text-foreground">
                        {pendingQuote ? pendingQuote.text : "暂无选中的文本"}
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                  <div className="space-y-3">
                    {quotesLoading ? (
                      <p className="text-sm text-muted-foreground">引用记录加载中...</p>
                    ) : quotes.length === 0 ? (
                      <p className="text-sm text-muted-foreground">暂无引用。拖动选择 PDF 文本并点击“生成引用”。</p>