.dt-topic{--dt-ink:#173a47;--dt-muted:#527078;--dt-teal:#126c79;--dt-line:#dce7e8;color:var(--dt-ink);font-family:"Microsoft YaHei",system-ui,sans-serif;max-width:1200px;margin:0 auto;padding:40px 24px 80px;font-size:16px;line-height:1.9}.dt-topic *{box-sizing:border-box}.dt-topic a{color:var(--dt-teal);text-decoration:underline;text-underline-offset:4px}.dt-topic a:focus-visible,.dt-topic summary:focus-visible{outline:3px solid #bd882a;outline-offset:5px}.dt-breadcrumb{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;margin-bottom:36px}.dt-hero{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center;padding:20px 0 50px}.dt-topic h1{font-size:clamp(32px,4vw,54px);line-height:1.25;margin:14px 0 24px;letter-spacing:-1px}.dt-topic h2{font-size:clamp(24px,2.6vw,32px);line-height:1.45;margin:8px 0 22px}.dt-topic h3{font-size:20px;margin:12px 0}.dt-topic p{margin:12px 0}.dt-kicker{font-size:13px;letter-spacing:1px;color:var(--dt-teal)}.dt-lead{font-size:20px;color:var(--dt-muted)}.dt-hero figure{margin:0}.dt-hero img{display:block;width:100%;height:auto;aspect-ratio:1.35;object-fit:cover;border-radius:16px}.dt-hero figcaption{font-size:12px;color:var(--dt-muted);margin-top:12px}.dt-topic .dt-button{display:inline-block;background:var(--dt-teal);color:white;border-radius:6px;text-decoration:none;padding:12px 22px;margin-top:16px;font-weight:700}.dt-answer{background:#edf5f4;padding:32px 38px;border-radius:16px}.dt-three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:26px}.dt-three>div+div{border-left:1px solid #cbdedd;padding-left:28px}.dt-three strong{font-size:21px}.dt-toc{display:flex;flex-wrap:wrap;gap:12px 26px;padding:24px 0;border-bottom:1px solid var(--dt-line);font-size:14px}.dt-toc a{text-decoration:none}.dt-section{padding:48px 0;border-bottom:1px solid var(--dt-line);scroll-margin-top:100px}.dt-table-wrap{overflow:auto}.dt-topic table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:15px}.dt-topic caption{text-align:left;font-weight:700;padding:12px 0}.dt-topic th,.dt-topic td{padding:16px;text-align:left;border-bottom:1px solid var(--dt-line);vertical-align:top;overflow-wrap:anywhere}.dt-topic thead th{background:#edf5f4}.dt-topic th:first-child{width:18%}.dt-note{border-left:3px solid #b99555;padding:12px 24px;background:#faf8f2;margin:24px 0}.dt-pair{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin:26px 0}.dt-pair article{border-top:3px solid #92b8ba;padding-top:14px}.dt-links{display:flex;gap:16px 28px;flex-wrap:wrap;margin-top:22px}.dt-support{display:grid;grid-template-columns:2fr 1fr;gap:40px;padding:40px;background:#173f4e;color:#fff;border-radius:16px;margin:48px 0;scroll-margin-top:100px}.dt-support a,.dt-support .dt-kicker{color:#d4eceb}.dt-service{font-size:15px;line-height:2.1}.dt-contact{border-left:1px solid #496a75;padding-left:32px;align-self:center}.dt-contact strong{font-size:24px}.dt-topic details{border-bottom:1px solid var(--dt-line);padding:19px 0}.dt-topic summary{cursor:pointer;font-weight:700;padding-right:20px}.dt-topic details p{color:var(--dt-muted);padding-left:20px}.dt-sources{font-size:13px;color:var(--dt-muted);overflow-wrap:anywhere}.dt-sources li{margin:10px 0}.dt-center-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.dt-card{border:1px solid var(--dt-line);border-radius:12px;overflow:hidden}.dt-card img{width:100%;aspect-ratio:16/10;object-fit:cover}.dt-card-body{padding:22px}.dt-card h3{font-size:21px}.dt-card.is-focus{border-color:#7fa9ac}.dt-tags{font-size:12px;color:var(--dt-muted)}@media(max-width:768px){.dt-hero{grid-template-columns:1fr;gap:24px}.dt-three{grid-template-columns:1fr;gap:12px}.dt-three>div+div{border-left:0;border-top:1px solid #cbdedd;padding:12px 0 0}.dt-support{grid-template-columns:1fr;padding:26px;gap:20px}.dt-contact{border-left:0;border-top:1px solid #496a75;padding:20px 0 0}.dt-center-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){.dt-topic{padding:24px 18px 50px;font-size:15px}.dt-answer{padding:24px}.dt-pair{grid-template-columns:1fr;gap:14px}.dt-section{padding:32px 0}.dt-topic th,.dt-topic td{padding:10px 6px;font-size:13px}.dt-topic th:first-child{width:21%}.dt-center-grid{grid-template-columns:1fr}.dt-lead{font-size:18px}.dt-support{padding:24px}.dt-topic h1{letter-spacing:0}}

.dt-card>a{display:block;height:100%;text-decoration:none}.dt-center-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}

.dt-card img{display:block;height:auto}.dt-card.has-cover:only-child>a{display:grid;grid-template-columns:1fr 1fr}.dt-card:only-child .dt-card-body{align-self:center}@media(max-width:768px){.dt-card.has-cover:only-child>a{display:block}}