:root{--hfgw:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;--ongw:rgb(248,249,251);--agw:rgb(160,99,59);--fgw:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;--rgw:10px;--p2gw:rgb(50,119,210);--sfgw:rgb(235,239,245);--pgw:rgb(46,80,184);--fggw:rgb(18,24,33);color-scheme:light;--wgw:1020px;--bdgw:rgb(211,218,228);--mugw:rgb(92,105,122);--bggw:rgb(252,252,253);--ptgw:rgb(33,57,131);--ggw:1.05rem}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:4.75rem;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{overflow-wrap:anywhere;background:var(--bggw);font:15px/1.75 var(--fgw);color:var(--fggw);margin:0}
a{text-underline-offset:3px;color:var(--ptgw)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--ptgw);outline-offset:2px;border-radius:3px}
h1,h2,h3{font-family:var(--hfgw);color:var(--fggw);line-height:1.3}
.skipgw{padding:.55rem 1.05rem;color:var(--ongw);background:var(--pgw);left:-999px;z-index:20;position:absolute;top:0}
.skipgw:focus{left:1.05rem}
.bargw{position:sticky;backdrop-filter:blur(8px);border-bottom:1px solid var(--bdgw);background:color-mix(in srgb,var(--bggw) 92%,transparent);top:0;z-index:10}
.bar-ingw{align-items:center;gap:.95rem;margin:0 auto;display:flex;padding:.6rem 1.05rem;max-width:calc(var(--wgw) + 160px);min-height:3.55rem}
.brandgw{text-decoration:none;align-items:center;white-space:nowrap;display:flex;font-weight:700;color:var(--fggw);gap:.6rem}
.brandgw .logogw{flex:none;width:26px;height:26px}
.pathgw{align-items:center;display:flex;min-width:0;gap:.4rem;font:13px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--mugw);padding-left:.95rem;border-left:1px solid var(--bdgw)}
.pathgw span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pathgw b{font-weight:500;color:var(--fggw);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar-ctagw{text-decoration:none;padding:.4rem .9rem;color:var(--ongw);background:var(--pgw);flex:none;font-weight:600;font-size:13px;margin-left:auto;border-radius:var(--rgw)}
.shellgw{margin:0 auto;display:grid;padding:0 1.05rem;grid-template-columns:230px minmax(0,1fr) 210px;max-width:calc(var(--wgw) + 160px);gap:calc(var(--ggw)*2.4)}
.sidegw{position:sticky;top:3.55rem;align-self:start;max-height:calc(100vh - 3.55rem);font-size:14px;padding:1.7rem 0 2.1rem;overflow:auto}
.sidegw>details>summary{display:none}
.sidetgw{font-size:11px;text-transform:uppercase;color:var(--mugw);letter-spacing:.12em;margin:0 0 .65rem;font-family:var(--fgw)}
.treegw ul,.treegw{padding:0;list-style:none;margin:0}
.treegw>li{margin-bottom:.15rem}
.treegw a{text-decoration:none;align-items:center;display:flex;padding:.35rem .65rem;border-radius:var(--rgw);color:var(--fggw);gap:.55rem}
.treegw a:hover{background:color-mix(in srgb,var(--pgw) 12%,transparent)}
.treegw svg{stroke:var(--mugw);width:15px;flex:none;height:15px}
.treegw ul{padding-left:.75rem;margin:.15rem 0 .35rem 1.1rem;border-left:1px solid var(--bdgw)}
.treegw ul a{display:block;padding:.25rem .55rem;font-size:13px;color:var(--mugw)}
.side-metagw{border-top:1px dashed var(--bdgw);padding-top:1.05rem;font-size:12px;color:var(--mugw);margin-top:1.45rem}
.maingw{padding:1.9rem 0 3.15rem;min-width:0}
.kickergw{margin:0 0 .85rem;letter-spacing:.06em;font:12px/1 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--ptgw)}
.maingw h1{letter-spacing:-.01em;margin:0 0 .75rem;font-size:clamp(1.75rem,1.25rem + 1.8vw,2.45rem)}
.leadgw{font-size:1.1rem;max-width:44em;margin:0 0 1.25rem;color:var(--mugw)}
.metagw{display:flex;margin-bottom:1.7rem;padding-bottom:1.25rem;border-bottom:1px solid var(--bdgw);font-size:13px;color:var(--mugw);flex-wrap:wrap;gap:.4rem 1.25rem}
.introgw{grid-template-columns:minmax(0,1fr) 220px;gap:1.25rem;display:grid;align-items:stretch;margin-bottom:2.5rem}
.onpagegw{border:1px solid var(--bdgw);border-left:3px solid var(--pgw);background:var(--sfgw);border-radius:var(--rgw);padding:1.05rem 1.25rem}
.onpagegw h2{font-size:14px;margin:0 0 .55rem}
.onpagegw ol{columns:2;font-size:14px;column-gap:1.7rem;padding-left:1.35rem;margin:0}
.onpagegw li{break-inside:avoid;padding:.15rem 0}
.figgw{margin:0;border:1px solid var(--bdgw);border-radius:var(--rgw);background:color-mix(in srgb,var(--pgw) 7%,var(--bggw));display:flex;flex-direction:column;justify-content:center;overflow:hidden}
.figgw .decorgw{display:block;width:100%;height:auto}
.figgw figcaption{font-size:12px;padding:.35rem .75rem;color:var(--mugw);border-top:1px solid var(--bdgw)}
.secgw{margin:0 0 2.95rem}
.secgw>h2,.articlegw h2{font-size:1.45rem;position:relative;margin:0 0 .95rem;border-bottom:1px solid var(--bdgw);padding-bottom:.45rem}
.hashgw{text-decoration:none;transition:opacity .15s;font-weight:400;opacity:.0;color:var(--pgw);margin-left:.35rem}
h2:hover .hashgw,.hashgw:focus{opacity:1}
.subgw{font-size:14px;color:var(--mugw);margin:-.4rem 0 1.05rem}
.dlgw{list-style:none;margin:0;padding:0;border:1px solid var(--bdgw);border-radius:var(--rgw);overflow:hidden}
.dlgw li+li{border-top:1px solid var(--bdgw)}
.dlgw a{text-decoration:none;align-items:center;gap:.85rem;display:grid;padding:.8rem 1.05rem;background:var(--sfgw);grid-template-columns:2.3rem minmax(0,1fr) auto;color:var(--fggw)}
.dlgw a:hover{background:color-mix(in srgb,var(--pgw) 10%,var(--sfgw))}
.dlgw svg{stroke:var(--ptgw);width:22px;height:22px}
.dlgw b{display:block;font-weight:600}
.dlgw small{color:var(--mugw);font-size:12.5px}
.dlgw em{color:var(--ongw);background:var(--pgw);font-weight:600;border-radius:999px;font-size:12px;padding:.2rem .7rem;font-style:normal}
.articlegw{margin:0 0 2.95rem}
.articlegw h3{margin:1.7rem 0 .55rem;font-size:1.15rem}
.articlegw p{margin:0 0 1.05rem}
.articlegw ol,.articlegw ul{margin:0 0 1.05rem;padding-left:1.45rem}
.articlegw li{margin:.25rem 0}
.calloutsgw{gap:.85rem;display:grid}
.notegw{--cgw:var(--p2gw);border:1px solid var(--bdgw);border-left:4px solid var(--cgw);background:color-mix(in srgb,var(--cgw) 7%,var(--bggw));border-radius:var(--rgw);padding:.9rem 1.15rem}
.notegw.progw{--cgw:var(--pgw)}
.notegw.congw{--cgw:var(--agw)}
.verdictgw{align-items:center;letter-spacing:.04em;gap:.4rem;display:inline-flex;font-weight:700;font-size:12px;color:var(--fggw)}
.verdictgw::before{border-radius:50%;background:var(--cgw);color:var(--ongw);display:inline-grid;height:1.2rem;width:1.2rem;font:700 11px/1 Georgia,serif;place-items:center;content:"i"}
.notegw.congw .verdictgw::before{content:"!"}
.notegw.progw .verdictgw::before{content:"✓"}
.notegw h3{margin:.3rem 0 .2rem;font-size:1.05rem}
.notegw p{font-size:14px;color:var(--mugw);margin:0}
.steps-boxgw{background:var(--sfgw);border:1px solid var(--bdgw);border-radius:var(--rgw);padding:1.25rem 1.45rem}
.stepsetgw h3{margin:0 0 1.05rem;font-size:1.1rem}
.stepsgw{padding:0;list-style:none;counter-reset:ngw;margin:0}
.stepsgw li{position:relative;counter-increment:ngw;padding:0 0 1.15rem 2.95rem}
.stepsgw li::before{border-radius:50%;left:0;color:var(--ongw);display:grid;background:var(--pgw);width:2rem;font:700 13px/1 ui-monospace,Menlo,monospace;place-items:center;content:counter(ngw);position:absolute;height:2rem;top:0}
.stepsgw li::after{content:"";position:absolute;left:.95rem;top:2.2rem;bottom:.2rem;border-left:2px dotted var(--bdgw)}
.stepsgw li:last-child{padding-bottom:0}
.stepsgw li:last-child::after{display:none}
.stepsgw b,.stepsgw strong{display:block;line-height:2rem}
.stepsgw p{font-size:14px;color:var(--mugw);margin:.1rem 0 0}
.glossgw{border-top:1px solid var(--bdgw);margin:0}
.glossgw div{padding:.75rem 0;gap:1.05rem;display:grid;border-bottom:1px solid var(--bdgw);grid-template-columns:10em minmax(0,1fr)}
.glossgw dt{font:600 14px/1.6 ui-monospace,SFMono-Regular,Menlo,var(--fgw);color:var(--ptgw)}
.glossgw dd{font-size:14px;margin:0}
.tablewrapgw{overflow-x:auto;border:1px solid var(--bdgw);border-radius:var(--rgw)}
.comparegw{width:100%;border-collapse:collapse;font-size:14px;min-width:31.5rem}
.comparegw caption{font-size:13px;color:var(--mugw);padding:.65rem .95rem;caption-side:top;text-align:left}
.comparegw th,.comparegw td{vertical-align:top;padding:.65rem .95rem;border-top:1px solid var(--bdgw);text-align:left}
.comparegw thead th{font-size:13px;background:var(--sfgw)}
.comparegw tbody th{font-weight:600}
.faqgw details{border-bottom:1px solid var(--bdgw)}
.faqgw summary{padding:.8rem 0;display:flex;font-weight:600;list-style:none;gap:.65rem;cursor:pointer}
.faqgw summary::-webkit-details-marker{display:none}
.faqgw summary::before{width:1.05rem;flex:none;content:"+";font-family:ui-monospace,Menlo,monospace;color:var(--ptgw)}
.faqgw details[open] summary::before{content:"−"}
.faqgw details p{margin:0 0 .95rem 1.7rem;font-size:14px;color:var(--mugw)}
.relgw{display:grid;grid-template-columns:repeat(auto-fill,minmax(12.6rem,1fr));gap:.55rem}
.relgw a{display:block;padding:.6rem .85rem;border:1px solid var(--bdgw);border-radius:var(--rgw);text-decoration:none;font-size:14px;background:var(--sfgw)}
.relgw a::before{color:var(--mugw);content:"→ "}
.relgw a:hover{border-color:var(--pgw)}
.latestgw{margin:0 0 2.95rem}
.latestgw h2{font-size:1.45rem;margin:0 0 .95rem;border-bottom:1px solid var(--bdgw);padding-bottom:.45rem}
.latestgw ul{padding:0;list-style:none;margin:0}
.latestgw li{padding:.45rem 0;border-bottom:1px dashed var(--bdgw)}
.latestgw a{text-decoration:none}
.pagergw{gap:.85rem;margin-top:1.05rem;grid-template-columns:1fr 1fr;display:grid}
.pagergw a{display:block;border:1px solid var(--bdgw);border-radius:var(--rgw);padding:.85rem 1.05rem;text-decoration:none;color:var(--fggw)}
.pagergw a:hover{border-color:var(--pgw)}
.pagergw small{display:block;font-size:12px;color:var(--mugw)}
.pagergw b{color:var(--ptgw)}
.pagergw a+a{text-align:right}
.tocgw{position:sticky;top:3.55rem;align-self:start;padding:1.9rem 0 2.1rem;max-height:calc(100vh - 3.55rem);font-size:13px;overflow:auto}
.tocgw h2{font-weight:600;font-size:12px;color:var(--mugw);margin:0 0 .65rem;font-family:var(--fgw)}
.tocgw ul{padding:0;list-style:none;border-left:1px solid var(--bdgw);margin:0 0 1.7rem}
.tocgw li a{text-decoration:none;display:block;line-height:1.45;padding:.25rem 0 .25rem .85rem;color:var(--mugw);border-left:2px solid transparent;margin-left:-1px}
.tocgw li a:hover{color:var(--fggw)}
.tocgw li a[aria-current]{color:var(--ptgw);border-left-color:var(--pgw);font-weight:600}
.seegw a{display:block;font-size:13px;padding:.2rem 0}
.footgw{font-size:13px;color:var(--mugw);background:var(--sfgw);border-top:1px solid var(--bdgw)}
.foot-ingw{margin:0 auto;display:flex;flex-wrap:wrap;max-width:calc(var(--wgw) + 160px);gap:.55rem 1.6rem;padding:1.25rem 1.05rem;justify-content:space-between}
.footgw a{color:var(--mugw)}
@media (max-width:1180px){.shellgw{grid-template-columns:210px minmax(0,1fr)}.tocgw{position:static;padding:0 0 2.1rem;max-height:none;grid-column:2}.toc-hgw,#toc-listgw{display:none}}
@media (max-width:820px){
.shellgw{flex-direction:column;display:flex}
.maingw{order:1}.tocgw{order:2}
.sidegw{position:static;padding:0 0 1.6rem;overflow:visible;order:3;max-height:none}
.sidegw>details{border:1px solid var(--bdgw);border-radius:var(--rgw);background:var(--sfgw)}
.sidegw>details>summary{align-items:center;display:flex;font-weight:600;list-style:none;padding:.65rem .95rem;cursor:pointer;justify-content:space-between}
.sidegw>details>summary::-webkit-details-marker{display:none}
.sidegw>details>summary::after{content:"▾";color:var(--mugw)}
.sidegw>details[open]>summary::after{content:"▴"}
.sidegw>details>div{padding:0 .65rem .85rem}
.sidetgw{display:none}
.introgw{grid-template-columns:1fr}
.figgw{max-width:280px}
.pathgw{display:none}
}
@media (max-width:520px){
.onpagegw ol{columns:1}
.glossgw div{gap:.15rem;grid-template-columns:1fr}
.pagergw{grid-template-columns:1fr}
.pagergw a+a{text-align:left}
.dlgw em{display:none}
.steps-boxgw{padding:1.05rem}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.bar-navgw{display:flex;gap:1.15rem;margin-left:auto;font-size:.95rem}
.bar-navgw a{text-decoration:none;color:var(--mugw)}
.bar-navgw a:hover{color:var(--ptgw)}
.shellgw:not(:has(>.tocgw)){grid-template-columns:240px minmax(0,1fr)}
.foot-cgw{align-items:center;flex-direction:column;text-align:center;gap:.3rem}
.treegw svg{display:none}.treegw a{padding-left:.4rem}

.extgw{font-size:.85rem;color:var(--mugw);margin:.95rem 0 0}.extgw span{margin-right:.55rem;opacity:.8}.extgw a{color:var(--mugw)}
h1{text-wrap:balance}