/* Knowledge hub and editorial reading layouts. */
.knowledge-page .nav-links>.nav-group:first-of-type>.nav-group-toggle{color:#475569}
.knowledge-page .nav-links>a[href="../zhishi/"]{color:#2d65e8}
.knowledge-page [hidden]{display:none!important}
.knowledge-page .kb-hero,.knowledge-page .kb-article-head{padding:30px 0 48px;background:linear-gradient(110deg,#f2f7ff,#fafcff)}
.knowledge-page .kb-crumb{display:flex;gap:14px;font-size:13px;color:#748398;margin-bottom:36px}
.knowledge-page h1{font-size:clamp(30px,3vw,44px);line-height:1.35;letter-spacing:-.035em;margin:0 0 18px;color:#202c3d}
.knowledge-page h2{font-size:27px;line-height:1.5;margin:0 0 20px;color:#202c3d}
.knowledge-page p{color:#64748b;font-size:16px;line-height:1.9}
.knowledge-page .kb-path{display:flex;flex-wrap:wrap;gap:20px;align-items:center;margin-top:30px;font-size:14px}
.kb-path>span{color:#7e8fa7}.kb-path a{color:#3264b8}
.knowledge-page .kb-library{padding:48px 0 56px}
.kb-library-head,.kb-controls{display:flex;align-items:center;justify-content:space-between;gap:20px}.kb-library-head{margin-bottom:24px}.knowledge-page .kb-library-head h2{margin:0;font-size:25px}
.kb-filters{display:flex;gap:4px;padding:4px;background:#f2f5fa;border-radius:10px}.kb-filters button{border:0;background:transparent;padding:9px 15px;color:#64748b;border-radius:7px;cursor:pointer;font:inherit;font-size:14px}.kb-filters button[aria-pressed=true]{background:#fff;color:#2864db;box-shadow:0 2px 7px #223b6010}
.kb-controls input{border:1px solid #dde5ef;border-radius:9px;padding:11px 14px;font:inherit;font-size:14px;width:220px;background:#fff}
.kb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}.kb-card{min-width:0;border:1px solid #e2e8f1;border-radius:16px;overflow:hidden;background:white;transition:box-shadow .2s,border-color .2s}.kb-card:hover{border-color:#b6ccef;box-shadow:0 12px 30px #223b6010}
.kb-cover{display:block;overflow:hidden}.kb-cover img{display:block;width:100%;height:auto;aspect-ratio:2/1;object-fit:cover}.kb-card-body{padding:24px;display:flex;flex-direction:column;min-height:242px}.kb-meta,.kb-byline{font-size:13px;color:#7b8a9e}.knowledge-page .kb-card h3{font-size:21px;line-height:1.5;min-height:63px;margin:12px 0;color:#26364c}.knowledge-page .kb-card p{font-size:14px;margin:0 0 22px}.kb-read{font-size:14px;color:#2f68d5;margin-top:auto}
.knowledge-page .kb-topics,.knowledge-page .kb-related{padding:44px 0 54px;background:#f7f9fc}.kb-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:24px}.kb-topic-grid>a{display:block;padding:24px;background:#fff;border-radius:12px;border:1px solid #e5ebf3}.knowledge-page .kb-topic-grid h3{font-size:18px;line-height:1.6;margin:0 0 10px}.knowledge-page .kb-topic-grid p{font-size:14px;margin:0}.kb-empty{text-align:center;padding:40px;background:#f7f9fc;border-radius:12px}.kb-empty button{padding:10px 18px;border:1px solid #cedcf1;border-radius:8px;background:#fff;color:#2864db;cursor:pointer}
.kb-article-heading{max-width:880px;margin:auto}.knowledge-page .kb-article-heading h1{margin-top:15px}.kb-reading{display:grid;grid-template-columns:230px minmax(0,780px);justify-content:center;gap:64px;padding-top:44px;padding-bottom:54px}.kb-toc{min-width:0}.kb-toc nav{position:sticky;top:110px;border-left:1px solid #e0e7f1;padding-left:22px}.kb-toc strong{display:block;font-size:14px;margin-bottom:16px}.kb-toc a{display:flex;gap:12px;font-size:14px;line-height:1.65;color:#6b7c91;padding:10px 0}.kb-toc a:hover{color:#2864db}.kb-toc a span{color:#9cabc0;font-size:11px;padding-top:3px}
.kb-prose{min-width:0}.knowledge-page .kb-prose section{padding:28px 0 0;scroll-margin-top:110px;background:transparent}.knowledge-page .kb-prose h2{font-size:25px;margin:0 0 18px}.knowledge-page .kb-prose p,.kb-prose li{font-size:16px;line-height:1.95;color:#4f5f73}.kb-prose p{margin:0 0 18px}.kb-prose ul,.kb-prose ol{padding-left:23px;margin:0 0 20px}.kb-prose li{margin:10px 0}.kb-prose strong{color:#30445e;font-weight:600}.kb-summary,.kb-note{padding:24px 28px;background:#f0f5ff;border-radius:12px;border-left:3px solid #5486f0}.knowledge-page .kb-summary p,.knowledge-page .kb-note p{margin:8px 0 0}.kb-table{overflow:auto;border:1px solid #e1e7f0;border-radius:10px;margin:22px 0}.kb-table table{border-collapse:collapse;width:100%;min-width:550px;font-size:14px}.kb-table th,.kb-table td{text-align:left;padding:16px;border-bottom:1px solid #e5ebf3;line-height:1.8}.kb-table thead{background:#f2f6fc}.kb-table th{font-weight:600}.kb-source a{color:#2864db;text-decoration:underline;text-underline-offset:3px}.kb-article-end{margin-top:35px;padding:26px;background:#f7f9fc;border-radius:12px}.knowledge-page .kb-article-end h2{font-size:22px}.kb-related .kb-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.knowledge-page a:focus-visible,.knowledge-page button:focus-visible,.knowledge-page input:focus-visible{outline:2px solid #3268e3;outline-offset:4px}
@media(max-width:1000px){.kb-reading{gap:30px;grid-template-columns:190px minmax(0,1fr)}.kb-library-head{align-items:flex-start;flex-direction:column}.kb-card-body{padding:18px}.kb-grid{gap:16px}}
@media(max-width:700px){.knowledge-page .kb-hero,.knowledge-page .kb-article-head{padding:24px 0 32px}.knowledge-page .kb-crumb{margin-bottom:24px}.kb-controls{width:100%;flex-wrap:wrap;gap:12px}.kb-controls input{width:100%}.kb-grid,.kb-topic-grid,.kb-related .kb-topic-grid{grid-template-columns:1fr}.knowledge-page .kb-card h3{min-height:0}.kb-card-body{min-height:0}.kb-reading{grid-template-columns:1fr;gap:24px;padding-top:26px}.kb-toc nav{position:static;border:1px solid #e1e8f2;border-radius:12px;padding:18px}.kb-toc a{padding:6px 0}.kb-path{gap:12px!important}.kb-path>span:first-child{flex-basis:100%}.kb-summary,.kb-note{padding:20px}.knowledge-page .kb-prose h2{font-size:23px}.knowledge-page .kb-library{padding:32px 0}.knowledge-page .kb-topics,.knowledge-page .kb-related{padding:32px 0}}
/* Knowledge page: Q&A (问答) section. */
.knowledge-page .kb-faq{padding:44px 0 54px}
.knowledge-page .kb-faq-lead{margin:0 0 18px;font-size:14px;color:#748398}
.kb-faq-cats{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 30px;font-size:14px}
.kb-faq-cats>span{color:#7e8fa7;margin-right:4px}
.kb-faq-cats a{padding:8px 15px;border:1px solid #dde5ef;border-radius:999px;color:#2d65e8;background:#fff;scroll-margin-top:110px}
.kb-faq-cats a:hover{border-color:#b6ccef;background:#f2f7ff}
.kb-faq-list{display:grid;gap:34px}
.kb-faq-group{scroll-margin-top:110px}
.knowledge-page .kb-faq-group h3{font-size:19px;line-height:1.6;color:#26364c;border-left:3px solid #5486f0;padding-left:12px;margin:0 0 14px}
.kb-faq-item{border:1px solid #e2e8f1;border-radius:12px;background:#fff;margin-bottom:10px;overflow:hidden}
.kb-faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;font-size:15px;font-weight:600;color:#30445e;cursor:pointer;list-style:none}
.kb-faq-item summary::-webkit-details-marker{display:none}
.kb-faq-item summary span{flex-shrink:0;color:#8a9ab0;font-size:17px;line-height:1;transition:transform .2s}
.kb-faq-item[open] summary span{transform:rotate(45deg)}
.kb-faq-item[open] summary{border-bottom:1px solid #e9eef6}
.kb-faq-item>div{padding:14px 20px 18px}
.kb-faq-item>div p{margin:0 0 8px;font-size:14px;line-height:1.9;color:#5c6c82}
.kb-faq-link{font-size:13px;color:#2f68d5}
.kb-faq-todo{margin:0;padding:18px 20px;border:1px dashed #d5dfec;border-radius:12px;background:#f8fafd;font-size:14px;color:#8a94a6}
@media(max-width:700px){.knowledge-page .kb-faq{padding:32px 0}.kb-faq-item summary{padding:14px 16px;font-size:14px}.kb-faq-item>div{padding:12px 16px 16px}}