/* 仅用于新增目录及第二回的阅读图示；不改变旧页层叠。 */
.collection-choices{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:38px 0 56px}.collection-choice{display:flex;flex-direction:column;padding:32px;background:#faf7f0;border:1px solid var(--line);border-top:3px solid #667961}.collection-choice h2{font-size:clamp(25px,3vw,32px);font-weight:400;line-height:1.6;margin:20px 0}.collection-choice p{font-size:16px}.collection-choice .collection-trail{font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px}.collection-choice>a{margin-top:auto;padding-top:18px;font-size:16px}.tree-reading{margin:34px 0;background:#eae6dc;padding:30px;text-align:center}.tree-reading span{display:block;font-size:12px;letter-spacing:4px;color:var(--accent)}.tree-reading strong{display:block;font-size:23px;font-weight:400;margin:10px 0}.tree-reading .tree-above p{font-size:14px;margin:0}.tree-below:before{content:"";display:block;width:1px;height:52px;background:#9b9d8e;margin:18px auto}.tree-reading figcaption{border-top:1px solid var(--line);margin-top:24px;padding-top:18px;font-size:13px;color:var(--muted)}
@media(max-width:760px){.collection-choices{grid-template-columns:1fr}.collection-choice{padding:24px}.tree-reading{padding:24px 18px}.tree-reading strong{font-size:21px}}