.topic-index{grid-template-columns:repeat(5,minmax(0,1fr))}.ai-chapter{padding:85px 6%;display:grid;grid-template-columns:1fr 1fr;gap:8%;background:#e6eadc;color:#244638}.ai-chapter h2{font-family:'Songti TC',serif;font-size:clamp(32px,4vw,50px);line-height:1.4;font-weight:500;margin:22px 0}.ai-chapter p{line-height:1.9;color:#64745b}.ai-chapter .article-link{margin-top:25px}.ai-rack{display:block;padding:30px;border:1px solid #8d9e7f;background:#d6e0ca;color:#284b38;align-self:center}.ai-rack>span,.ai-rack small{font:11px monospace;letter-spacing:1px}.ai-rack b{display:flex;justify-content:space-between;align-items:center;margin-top:12px;padding:18px;background:#f1f2e8;border:1px solid #adba9d;font-weight:500}.ai-rack i{width:7px;height:7px;border-radius:50%;background:#8da575}.ai-rack small{display:block;margin-top:20px}@media(max-width:1000px){.topic-index{grid-template-columns:repeat(3,1fr)}}@media(max-width:650px){.topic-index{grid-template-columns:repeat(2,1fr)}.ai-chapter{grid-template-columns:1fr;gap:30px}.ai-rack{padding:20px}}