<div style="padding:40px;color:#cbccc6"><h1>Day & Night (B3678/S34678)</h1><p>对偶规则，背景翻转后规则不变。</p><div style="padding:20px;background:#0d1017;border-left:3px solid #ffb454"><span class="katex-display"><span class="katex"><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord mathnormal" style="margin-right:0.0502em;">B</span><span class="mord">3678/</span><span class="mord mathnormal" style="margin-right:0.0576em;">S</span><span class="mord">34678</span></span></span></span></span></div><p style="color:#707a8c">该页面需要 JavaScript 进行交互式可视化。</p></div>