body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC','Segoe UI',Arial,sans-serif;color:#0F172A;background:#fff}
a{color:#2563EB}a:hover{color:#1D4ED8}
.wrap{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;box-sizing:border-box}
.num{font-feature-settings:"tnum"}
.gt{background:linear-gradient(90deg,#0EA5E9,#2563EB,#0EA5E9);-webkit-background-clip:text;background-clip:text;color:transparent}
.mn{display:inline-flex;align-items:center;gap:4px;min-height:44px;color:#334155;text-decoration:none;font-size:15px}
.mn:hover,.md:hover>.mn{color:#0F172A}
.md{position:relative}
.md .mp{display:none;position:absolute;top:100%;left:-24px;z-index:50;background:#fff;border:1px solid #E2E8F0;border-radius:18px;box-shadow:0 24px 60px rgba(15,23,42,.12);padding:14px;gap:4px 12px;box-sizing:border-box}
.md .mp::before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
.md:hover .mp,.md:focus-within .mp{display:grid}
.mi{display:flex;gap:12px;align-items:center;padding:10px 12px;border-radius:12px;text-decoration:none;color:#0F172A;min-width:220px}
.mi:hover{background:#F1F5F9;color:#0F172A}
.mi b{display:block;font-size:14px;font-weight:600}.mi small{display:block;font-size:12px;color:#64748B;margin-top:2px}
.mi i{font-style:normal;flex:0 0 36px;width:36px;height:36px;border-radius:10px;background:#EFF6FF;color:#2563EB;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}
.mh{display:block;font-size:12px;font-weight:600;color:#94A3B8;letter-spacing:1px;padding:4px 12px 6px}
.rg{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px 6px}
.ri{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:10px;text-decoration:none;color:#0F172A;font-size:14px}
.ri:hover{background:#F1F5F9;color:#0F172A}
.ri i{font-style:normal;flex:0 0 28px;height:20px;border-radius:5px;background:#0F172A;color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}
.ri span{flex:1}.ri small{font-size:12px;color:#64748B}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:600;text-decoration:none;box-sizing:border-box;border:0;cursor:pointer;font-family:inherit;white-space:nowrap}
.b-ink{background:#0F172A;color:#fff}.b-ink:hover{background:#1E293B;color:#fff}
.b-white{background:#fff;color:#0F172A;box-shadow:0 2px 10px rgba(15,23,42,.08)}.b-white:hover{background:#F8FAFC;color:#0F172A}
.b-blue{background:#2563EB;color:#fff}.b-blue:hover{background:#1D4ED8;color:#fff}
.card{background:#fff;border:1px solid #EEF2F7;border-radius:18px;box-shadow:0 6px 24px rgba(15,23,42,.05);box-sizing:border-box}
.ic{width:44px;height:44px;border-radius:12px;background:#F1F5F9;display:flex;align-items:center;justify-content:center;flex:0 0 44px}
.tag{display:inline-flex;align-items:center;height:20px;padding:0 7px;border-radius:5px;background:#FEF3C7;color:#92400E;font-size:11px;font-weight:700}
.ft a{color:#64748B;text-decoration:none;font-size:14px}.ft a:hover{color:#0F172A}
.faq summary{list-style:none;cursor:pointer}.faq summary::-webkit-details-marker{display:none}
.blob{position:absolute;background:#BAE0FB;opacity:.75}
section[id]{scroll-margin-top:24px}
.tbl-x{position:relative;overflow-x:auto;-webkit-overflow-scrolling:touch}
.card{position:relative}
@media (max-width:960px){
header nav{flex:1 1 100%!important;gap:0 18px!important}
.md:hover .mp,.md:focus-within .mp{display:none}
.md.open .mp{display:grid!important;position:fixed;left:12px;right:12px;max-height:72vh;overflow:auto;grid-template-columns:1fr!important;width:auto!important;min-width:0!important}
.md.open .mp [style*="grid-template-columns"]{grid-template-columns:1fr!important}
.mi{min-width:0}.rg{grid-template-columns:repeat(2,minmax(0,1fr))!important}
.tbl-x table{min-width:760px}
}
@media (max-width:640px){
.wrap{padding-left:16px!important;padding-right:16px!important}
h1{font-size:28px!important}h2{font-size:26px!important}
.btn{min-width:0!important;padding:0 20px}
[style*="padding: 44px 40px"],[style*="padding: 56px 48px"],[style*="padding: 48px"],[style*="padding: 40px"],[style*="padding: 36px"]{padding:24px 18px!important}
}
.chip{display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border-radius:999px;font-size:14px;text-decoration:none;background:#fff;color:#334155;border:1px solid #E2E8F0;box-sizing:border-box}
.chip:hover{color:#0F172A;border-color:#CBD5E1}.chip-on,.chip-on:hover{background:#0F172A;color:#fff;border-color:#0F172A}
.pg{min-width:40px;height:40px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;text-decoration:none;font-size:15px;background:#fff;color:#334155;border:1px solid #E2E8F0;box-sizing:border-box}
.pg-on{background:#2563EB;color:#fff;border-color:#2563EB}
.empty{padding:64px 0;text-align:center;color:#64748B;font-size:16px}
.th{position:relative;overflow:hidden;border-radius:16px;display:flex;flex-direction:column;justify-content:flex-end;gap:6px;box-sizing:border-box;background:linear-gradient(135deg,#DBEAFE,#E0F2FE 55%,#F0F9FF);color:#1E3A8A}
.th img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.th i{font-style:normal;font-size:12px;font-weight:600;color:#2563EB;letter-spacing:1px}
.th b{font-weight:800;line-height:1.2;color:#0F172A}
.bl-top{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:28px;align-items:start}
.bl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.bp{display:flex;gap:48px;align-items:flex-start}.bp article{flex:1 1 0;min-width:0}.bp aside{flex:0 0 320px;display:flex;flex-direction:column;gap:20px;position:sticky;top:24px}
.art{font-size:17px;line-height:1.9;color:#1E293B}
.art h2{font-size:24px;line-height:1.4;margin:36px 0 14px;font-weight:800;color:#0F172A;scroll-margin-top:24px}
.art h3{font-size:20px;line-height:1.4;margin:28px 0 12px;font-weight:700;color:#0F172A}
.art p{margin:0 0 20px}.art ul,.art ol{margin:0 0 20px;padding-left:22px}.art li{margin-bottom:8px}.art strong{color:#0F172A}
.art img{max-width:100%;height:auto;border-radius:14px;display:block;margin:18px auto}
.art table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:15px;display:block;overflow-x:auto}
.art th,.art td{border:1px solid #E2E8F0;padding:10px 12px;text-align:left}.art th{background:#F8FAFC}
.art blockquote{margin:0 0 20px;padding:14px 18px;border-left:3px solid #2563EB;background:#F1F7FF;color:#334155;border-radius:0 12px 12px 0}
.art pre{background:#0B1220;color:#E2E8F0;padding:16px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.6}
.art code{font-family:Consolas,Menlo,monospace}
.toc a{display:block;padding:6px 0;font-size:14px;color:#475569;text-decoration:none;line-height:1.5}.toc a:hover{color:#2563EB}
@media (max-width:960px){.bl-top{grid-template-columns:1fr}.bl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bp{flex-direction:column}.bp aside{flex:1 1 auto;width:100%;position:static}}
@media (max-width:640px){.bl-grid{grid-template-columns:1fr}form[role=search]{flex:1 1 100%!important}}