.site-footer{margin:0;padding:42px 0 24px;border-top:1px solid var(--line,#e4e6e3);background:var(--bg,#fbfbfa);font:14px/1.75 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--sub,#3f4a57)}
.site-footer .footer-inner{max-width:1200px;margin:auto;padding:0 28px}.site-footer .footer-grid{display:grid;grid-template-columns:1.65fr 1fr 1.2fr 1fr;gap:32px}.site-footer .footer-grid>div{min-width:0}.site-footer img{max-width:132px;height:auto}.site-footer p{font-size:13px;margin:10px 0;overflow-wrap:anywhere}.site-footer p span{display:block;font-size:12px;color:var(--mute,#6b7280)}.site-footer b{color:var(--ink,#172b43);font-size:14px;display:block;margin:0 0 12px}.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}.site-footer a{color:inherit;text-decoration:none;overflow-wrap:anywhere}.site-footer a:hover{text-decoration:underline}.site-footer .footer-legal{border-top:1px solid var(--line,#e4e6e3);margin-top:30px;padding-top:20px;display:flex;gap:12px 28px;flex-wrap:wrap;font-size:12px}.site-footer .footer-legal a{text-decoration:underline;text-underline-offset:3px}
.company-facts{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;max-width:1000px}.company-facts>div{padding:16px 0;border-bottom:1px solid var(--line)}.company-facts dt{font-size:13px;color:var(--mute);margin-bottom:6px}.company-facts dd{margin:0;overflow-wrap:anywhere}.company-facts a{color:var(--accent)}
.knowledge-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:20px;margin-top:30px}.knowledge-card{padding:28px;border:1px solid var(--line);border-radius:16px;background:#fff;display:flex;flex-direction:column;align-items:flex-start;min-width:0}.knowledge-card h3{font-size:21px;font-weight:500;line-height:1.5;margin:14px 0 12px}.knowledge-card h3 a{color:var(--ink);text-decoration:none}.knowledge-card p{font-size:15px;line-height:1.8;color:var(--sub);margin:0 0 24px}.knowledge-tag{display:inline-block;font-size:12px;color:var(--tealText,#0a7f70);letter-spacing:.04em}.knowledge-more{display:inline-block;color:var(--accent,#0a6bb3);font-size:14px;margin-top:auto}.knowledge-related{background:var(--tile,#f3f4f1)}.knowledge-related>div>p{margin-top:24px}.knowledge-categories{display:flex;flex-wrap:wrap;gap:12px}.knowledge-categories a{padding:8px 18px;border:1px solid var(--line);border-radius:99px;font-size:14px;background:#fff}.knowledge-editorial{max-width:900px;padding:28px 32px;background:var(--tile);border-radius:16px}.knowledge-editorial h2{font-size:25px}.knowledge-editorial a{color:var(--accent)}
.knowledge-page .knowledge-hero{padding:44px 0 48px;background:linear-gradient(135deg,#f0f6fa,var(--bg));border-bottom:1px solid var(--line)}.knowledge-crumb{font-size:13px;color:var(--mute);margin-bottom:30px}.knowledge-crumb a{color:var(--accent)}.knowledge-eyebrow{font-size:13px;color:var(--tealText);margin:0 0 14px}.knowledge-hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.35;max-width:21em;margin:0 0 22px}.knowledge-byline{font-size:13px;color:var(--mute)}.knowledge-byline a{color:var(--accent)}.knowledge-answer{max-width:900px;margin-top:28px;background:#fff;border-left:3px solid var(--teal);padding:24px 28px;border-radius:0 12px 12px 0}.knowledge-answer strong{font-size:14px;color:var(--tealText)}.knowledge-answer p{margin:8px 0 0;font-size:18px;color:var(--sub)}
.knowledge-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:64px;padding-top:40px;padding-bottom:64px;align-items:start}.knowledge-article{min-width:0}.knowledge-article section{padding:32px 0;border-top:1px solid var(--line);scroll-margin-top:90px}.knowledge-article h2{font-size:27px;line-height:1.45;max-width:none;margin:0 0 18px}.knowledge-article p,.knowledge-article li{font-size:16px;line-height:1.95;color:var(--sub)}.knowledge-article p{margin:12px 0}.knowledge-article ul{padding-left:22px}.knowledge-article li{margin:8px 0}.knowledge-article a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.knowledge-toc{padding:22px 26px;margin:0 0 30px;background:var(--tile);border-radius:12px;font-size:15px}.knowledge-toc ol{padding-left:20px;margin-bottom:0}.knowledge-toc li{font-size:14px;margin:6px 0}.knowledge-toc a{text-decoration:none}
.knowledge-table{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin:20px 0;max-width:100%}.knowledge-table table{width:100%;border-collapse:collapse;min-width:440px;line-height:1.8;font-size:14px}.knowledge-table th,.knowledge-table td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.knowledge-table th{background:var(--tile);font-weight:500}.knowledge-table th:first-child,.knowledge-table td:first-child{min-width:100px}.knowledge-table td{color:var(--sub)}.knowledge-table tr:last-child td{border-bottom:0}.knowledge-faq{padding:18px 0;border-bottom:1px solid var(--line)}.knowledge-faq summary{cursor:pointer;font-weight:500;font-size:16px}.knowledge-faq[open] summary{color:var(--accent)}.knowledge-note{font-size:13px!important;color:var(--mute)!important}
.knowledge-sidebar{position:sticky;top:94px;display:grid;gap:20px}.knowledge-sidebar>div{background:var(--tile);border:1px solid var(--line);border-radius:14px;padding:24px}.knowledge-sidebar h2{font-size:23px;margin:14px 0}.knowledge-sidebar p{font-size:14px;color:var(--sub)}.knowledge-sidebar .btn{margin:12px 0 18px;justify-content:center;width:100%}.knowledge-sidebar .knowledge-more{display:block}.knowledge-page a:focus-visible,.knowledge-page summary:focus-visible,.knowledge-table:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
@media(max-width:1100px){.nav .wrap{gap:20px}.nav ul{gap:18px}}
@media(max-width:960px){.site-footer .footer-grid{grid-template-columns:1fr 1fr}.knowledge-layout{grid-template-columns:1fr;gap:24px}.knowledge-sidebar{position:static;grid-template-columns:1fr 1fr}.knowledge-article h2{font-size:25px}}
@media(max-width:640px){.site-footer .footer-inner{padding:0 20px}.site-footer .footer-grid,.company-facts{grid-template-columns:1fr}.site-footer .footer-legal{display:grid;gap:10px}.knowledge-card{padding:24px}.knowledge-card h3{font-size:20px}.knowledge-sidebar{grid-template-columns:1fr}.knowledge-page .knowledge-hero{padding:26px 0 32px}.knowledge-answer{padding:20px}.knowledge-answer p{font-size:16px}.knowledge-layout{padding-top:28px;padding-bottom:40px}.knowledge-toc{padding:20px}.knowledge-article section{padding:26px 0}.knowledge-table th,.knowledge-table td{padding:12px}.knowledge-article h2{font-size:23px}.knowledge-crumb{margin-bottom:24px}.knowledge-byline{line-height:1.9}}