.deep-dive{margin:20px 0 80px;padding-top:60px;border-top:1px solid var(--line)}
.deep-dive>h2{font:600 clamp(38px,5vw,58px)/1.02 var(--serif);letter-spacing:-.025em;margin:14px 0 18px}
.deep-intro{font-size:18px;color:#405b56;max-width:680px;margin-bottom:46px}
.detail-topic{display:grid;grid-template-columns:54px 1fr;gap:18px;padding:34px 0;border-top:1px solid var(--line)}
.detail-topic>span{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.15em;padding-top:8px}
.detail-topic h3{font:600 31px/1.12 var(--serif);margin:0 0 14px}
.detail-topic h4{font-size:13px;text-transform:uppercase;letter-spacing:.12em;margin:27px 0 9px;color:var(--accent)}
.detail-topic p{font-size:16px;color:#405b56;margin:0}
@media(max-width:640px){.detail-topic{grid-template-columns:32px 1fr}.detail-topic h3{font-size:27px}}