:root{--bv-p1ci5:#14B1E1;--bv-1chc5:#0AA7F5;--bv-180b8:#F4484B;--bv-1rdxt:#F6F6F9;--bv-1ejub:#F5F6FA;--bv-1bc9k:#151928;--bv-1ys65:#585D74;--bv-jqna0:#D3D7E3;--bv-z2y5l:#067293;--bv-12y7f:#062832;--bv-cwt4p:12px;--bv-wh09z:1.10rem;--bv-1mzyi:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--bv-rw1uw:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--bv-4fwbe:1020px;color-scheme:light}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:4.5rem}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;background:var(--bv-1rdxt);color:var(--bv-1bc9k);font:17px/1.85 var(--bv-1mzyi);overflow-wrap:anywhere}
a{color:var(--bv-z2y5l);text-underline-offset:3px}
a:focus-visible,summary:focus-visible{outline:2px solid var(--bv-z2y5l);outline-offset:3px;border-radius:3px}
svg{display:block}
h1,h2,h3{font-family:var(--bv-rw1uw);line-height:1.3;margin:0;color:var(--bv-1bc9k)}
.bv-2aian{max-width:var(--bv-4fwbe);margin:0 auto;padding:0 1.25rem}
/* top bar */
.bv-1hv8l{border-bottom:1px solid var(--bv-jqna0)}
.bv-1hv8l .bv-2aian{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:3.5rem}
.bv-1qwla{display:flex;align-items:center;gap:.55rem;color:var(--bv-1bc9k);text-decoration:none;font-weight:700;font-size:.95rem;min-width:0}
.bv-1qwla .bv-15371{width:26px;height:26px;flex:none}
.bv-1kuh7{font-size:.8rem;color:var(--bv-1ys65);white-space:nowrap}
/* intro */
.bv-e1vbj{position:relative;overflow:hidden;background:radial-gradient(120% 90% at 85% 40%,color-mix(in srgb,var(--bv-p1ci5) 22%,var(--bv-1rdxt)),var(--bv-1rdxt) 70%)}
.bv-e1vbj .bv-2aian{position:relative;min-height:min(78vh,640px);display:flex;flex-direction:column;justify-content:center;padding-top:calc(var(--bv-wh09z)*4);padding-bottom:calc(var(--bv-wh09z)*4)}
.bv-s8xss{position:absolute;right:-4%;top:50%;transform:translateY(-50%);width:min(56%,700px);pointer-events:none}
.bv-s8xss .bv-xu6y2{width:100%;height:auto}
.bv-lfdr0{position:relative;max-width:36rem}
.bv-1x5k9{margin:0 0 1.2rem;font-size:.8rem;letter-spacing:.2em;color:var(--bv-z2y5l);font-weight:700}
.bv-e1vbj h1{font-size:clamp(2.2rem,6.4vw,4.4rem);font-weight:900;letter-spacing:-.01em;line-height:1.12}
.bv-11mky{font-size:clamp(1.05rem,2.2vw,1.3rem);color:var(--bv-1ys65);margin:1.4rem 0 2rem;line-height:1.7}
.bv-188jw{align-self:flex-start;display:inline-flex;align-items:center;gap:.6rem;padding:.8rem 1.4rem;border-radius:999px;background:var(--bv-p1ci5);color:var(--bv-12y7f);font-weight:700;text-decoration:none}
.bv-188jw svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2}
.bv-188jw:hover{background:var(--bv-1chc5)}
/* layout */
.bv-1ohkx{display:grid;grid-template-columns:220px minmax(0,1fr);gap:calc(var(--bv-wh09z)*4);align-items:start}
.bv-194mm{position:sticky;top:2rem;padding-top:calc(var(--bv-wh09z)*4)}
.bv-z845y{margin:0 0 .8rem;font-size:.72rem;letter-spacing:.24em;color:var(--bv-1ys65);font-weight:700}
.bv-194mm ol{list-style:none;margin:0;padding:0;counter-reset:bv-1dra1;border-left:2px solid var(--bv-jqna0)}
.bv-194mm li{counter-increment:bv-1dra1}
.bv-194mm .bv-newx3::after{content:"";counter-increment:bv-1dra1}
.bv-194mm .bv-xhp73{counter-increment:none}
.bv-194mm a{display:flex;gap:.7rem;padding:.42rem 0 .42rem 1rem;margin-left:-2px;border-left:2px solid transparent;color:var(--bv-1ys65);text-decoration:none;font-size:.9rem;line-height:1.45}
.bv-194mm a::before{flex:none;content:counter(bv-1dra1,decimal-leading-zero);font-variant-numeric:tabular-nums;font-weight:700;font-size:.78rem;padding-top:.1rem;color:color-mix(in srgb,var(--bv-1ys65) 70%,transparent)}
.bv-194mm .bv-xhp73 a::before{content:"+"}
.bv-194mm a:hover{color:var(--bv-1bc9k)}
.bv-194mm a.bv-12y7f{color:var(--bv-1bc9k);border-left-color:var(--bv-p1ci5);font-weight:700}
.bv-194mm a.bv-12y7f::before{color:var(--bv-z2y5l)}
.bv-1ysim{counter-reset:bv-1syxg;min-width:0;max-width:46rem}
/* chapters */
.bv-1hz8r,.bv-vdpyc{padding:calc(var(--bv-wh09z)*4.5) 0 calc(var(--bv-wh09z)*1.5);border-bottom:1px solid var(--bv-jqna0)}
.bv-1hz8r:not(.guide),.bv-vdpyc{counter-increment:bv-1syxg}
.guide{padding:0;border:0}
.bv-3acyy::before,.bv-vdpyc::before{content:counter(bv-1syxg,decimal-leading-zero);display:block;font:900 clamp(3rem,7vw,4.6rem)/1 var(--bv-rw1uw);color:transparent;-webkit-text-stroke:1.5px var(--bv-p1ci5);margin-bottom:.9rem;letter-spacing:-.02em}
.bv-2p35f h2,.bv-vdpyc h2{font-size:clamp(1.55rem,3.4vw,2.2rem);font-weight:800;margin-bottom:1.2rem}
.bv-uzwlr{color:var(--bv-1ys65);margin:-.4rem 0 1.8rem}
.bv-vdpyc h3{font-size:1.2rem;margin:2.2rem 0 .6rem}
.bv-vdpyc h3::before{content:"";display:inline-block;width:.55rem;height:.55rem;border-radius:50%;background:var(--bv-180b8);margin-right:.6rem;vertical-align:.18em}
.bv-vdpyc p{margin:0 0 1.2rem}
.bv-vdpyc>p:first-of-type{font-size:1.12em;color:var(--bv-1bc9k)}
.bv-vdpyc ul,.bv-vdpyc ol{margin:0 0 1.3rem;padding-left:1.4rem}
.bv-vdpyc li{margin:.4rem 0}
.bv-vdpyc li::marker{color:var(--bv-z2y5l);font-weight:700}
/* downloads */
.bv-far0b{list-style:none;margin:0;padding:0;border-top:1px solid var(--bv-jqna0)}
.bv-far0b a{display:grid;grid-template-columns:2.6rem minmax(0,1fr) auto;align-items:center;gap:1rem;padding:1rem .4rem;border-bottom:1px solid var(--bv-jqna0);color:var(--bv-1bc9k);text-decoration:none}
.bv-far0b li:last-child a{border-bottom:0}
.bv-far0b a:hover{background:color-mix(in srgb,var(--bv-p1ci5) 8%,transparent)}
.bv-far0b svg{width:2.6rem;height:2.6rem;padding:.55rem;border-radius:var(--bv-cwt4p);background:color-mix(in srgb,var(--bv-p1ci5) 14%,var(--bv-1ejub));fill:none;stroke:var(--bv-z2y5l);stroke-width:1.7}
.bv-far0b b{display:block;font-size:1.08rem}
.bv-far0b small{display:block;color:var(--bv-1ys65);font-size:.85rem;line-height:1.4}
.bv-far0b em{font-style:normal;font-size:.85rem;font-weight:700;color:var(--bv-z2y5l);white-space:nowrap}
/* steps */
.bv-1r1ck h3{font-size:1.15rem;margin-bottom:1.2rem}
.bv-3puui{list-style:none;margin:0;padding:0;counter-reset:bv-1x7bv}
.bv-3puui li{counter-increment:bv-1x7bv;display:grid;grid-template-columns:3.2rem minmax(0,1fr);column-gap:.9rem;padding:1rem 0;border-top:1px dashed var(--bv-jqna0)}
.bv-3puui li::before{content:counter(bv-1x7bv);grid-row:span 2;font:800 2rem/1 var(--bv-rw1uw);color:var(--bv-z2y5l)}
.bv-3puui strong{font-size:1.02rem}
.bv-3puui p{margin:.2rem 0 0;color:var(--bv-1ys65);font-size:.95rem}
/* compare */
.bv-1oqyl{overflow-x:auto;margin:0 -.2rem}
.bv-a8ium{width:100%;border-collapse:collapse;font-size:.93rem;min-width:30rem}
.bv-a8ium caption{text-align:left;font-weight:700;padding-bottom:.8rem;caption-side:top}
.bv-a8ium th,.bv-a8ium td{text-align:left;vertical-align:top;padding:.75rem .8rem;border-bottom:1px solid var(--bv-jqna0)}
.bv-a8ium thead th{border-bottom:2px solid var(--bv-1bc9k);font-size:.82rem;letter-spacing:.06em;color:var(--bv-1ys65)}
.bv-a8ium tbody tr:nth-child(odd){background:color-mix(in srgb,var(--bv-1ejub) 70%,transparent)}
/* notes */
.bv-18qj9{display:grid;gap:0}
.bv-11st8{display:grid;grid-template-columns:7.5rem minmax(0,1fr);column-gap:1.4rem;padding:1.3rem 0;border-top:1px solid var(--bv-jqna0)}
.bv-1lh34{grid-row:span 2;align-self:start;font-size:.78rem;font-weight:700;color:var(--bv-z2y5l);padding:.2rem .55rem;border:1px solid currentColor;border-radius:var(--bv-cwt4p);text-align:center;line-height:1.5}
.bv-11st8[data-verdict="不足"] .bv-1lh34{color:var(--bv-180b8)}
.bv-11st8[data-verdict="提示"] .bv-1lh34{color:var(--bv-1ys65)}
.bv-11st8 h3{font-size:1.08rem}
.bv-11st8 p{margin:.35rem 0 0;color:var(--bv-1ys65);font-size:.96rem}
/* faq */
.bv-w24n6 details{border-top:1px solid var(--bv-jqna0)}
.bv-w24n6 details:last-of-type{border-bottom:1px solid var(--bv-jqna0)}
.bv-w24n6 summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem;padding:1.1rem 0;font-weight:700;font-size:1.04rem}
.bv-w24n6 summary::-webkit-details-marker{display:none}
.bv-w24n6 summary::after{content:"+";flex:none;width:1.7rem;height:1.7rem;border-radius:50%;border:1px solid var(--bv-jqna0);display:grid;place-items:center;color:var(--bv-z2y5l);font-weight:400}
.bv-w24n6 details[open] summary::after{content:"−";background:var(--bv-p1ci5);border-color:var(--bv-p1ci5);color:var(--bv-12y7f)}
.bv-w24n6 details p{margin:0 0 1.2rem;color:var(--bv-1ys65)}
/* glossary */
.bv-vqll7{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;background:var(--bv-jqna0);border:1px solid var(--bv-jqna0);border-radius:var(--bv-cwt4p);overflow:hidden}
.bv-vqll7 div{background:var(--bv-1rdxt);padding:1rem 1.1rem}
.bv-vqll7 dt{font-weight:800;font-family:var(--bv-rw1uw)}
.bv-vqll7 dd{margin:.3rem 0 0;color:var(--bv-1ys65);font-size:.92rem;line-height:1.65}
/* more */
.bv-etff0{padding:calc(var(--bv-wh09z)*4.5) 0 calc(var(--bv-wh09z)*3)}
.bv-etff0 h2{font-size:1.3rem;margin-bottom:1.2rem}
.bv-104np{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2rem}
.bv-etff0 h3,.fapnet-latest h2{font-size:.78rem;letter-spacing:.2em;color:var(--bv-1ys65);margin:0 0 .6rem;font-family:var(--bv-1mzyi)}
.bv-hrzom{display:flex;flex-direction:column}
.bv-hrzom a,.fapnet-latest a{display:block;padding:.5rem 0;border-bottom:1px solid var(--bv-jqna0);text-decoration:none;color:var(--bv-1bc9k);font-size:.95rem}
.bv-hrzom a:hover,.fapnet-latest a:hover{color:var(--bv-z2y5l)}
.fapnet-latest{margin-top:2rem}
.fapnet-latest ul{list-style:none;margin:0;padding:0}
.bv-x1319{display:flex;flex-wrap:wrap;gap:.5rem}
.bv-x1319 a{padding:.3rem .8rem;border-radius:999px;background:color-mix(in srgb,var(--bv-p1ci5) 12%,var(--bv-1ejub));color:var(--bv-1bc9k);text-decoration:none;font-size:.88rem}
.bv-x1319 a:hover{background:var(--bv-p1ci5);color:var(--bv-12y7f)}
/* footer */
.bv-axrg2{border-top:1px solid var(--bv-jqna0);font-size:.84rem;color:var(--bv-1ys65)}
.bv-axrg2 .bv-2aian{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 1.5rem;padding-top:1.3rem;padding-bottom:1.3rem}
.bv-axrg2 p{margin:0}
.top{position:fixed;right:1rem;bottom:1rem;z-index:20;display:inline-flex;align-items:center;gap:.35rem;padding:.55rem .9rem;border-radius:999px;background:var(--bv-1ejub);border:1px solid var(--bv-jqna0);color:var(--bv-1bc9k);font-size:.82rem;text-decoration:none;box-shadow:0 6px 20px color-mix(in srgb,var(--bv-1bc9k) 14%,transparent);transition:opacity .2s,transform .2s}
.top svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.2}
.bv-10hm3 .top:not(.bv-4c8cp){opacity:0;transform:translateY(.6rem);pointer-events:none;visibility:hidden}
@media (max-width:900px){
.bv-1ohkx{grid-template-columns:minmax(0,1fr);gap:0}
.bv-194mm{top:0;z-index:15;padding:.55rem 0;margin:0 -1.25rem;background:color-mix(in srgb,var(--bv-1rdxt) 92%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--bv-jqna0)}
.bv-z845y{position:absolute;left:-999px}
.bv-194mm ol{display:flex;gap:.4rem;overflow-x:auto;border:0;padding:0 1.25rem;scrollbar-width:none}
.bv-194mm ol::-webkit-scrollbar{display:none}
.bv-194mm a{white-space:nowrap;max-width:14em;overflow:hidden;text-overflow:ellipsis;display:block;margin:0;padding:.35rem .85rem;border:1px solid var(--bv-jqna0);border-radius:999px;font-size:.84rem}
.bv-194mm a::before{margin-right:.4rem}
.bv-194mm a.bv-12y7f{background:var(--bv-p1ci5);border-color:var(--bv-p1ci5);color:var(--bv-12y7f)}
.bv-194mm a.bv-12y7f::before{color:var(--bv-12y7f)}
.bv-1ysim{max-width:none}
}
@media (max-width:640px){
body{font-size:16px}
.bv-1kuh7{display:none}
.bv-e1vbj .bv-2aian{min-height:0;padding-top:calc(var(--bv-wh09z)*3);padding-bottom:calc(var(--bv-wh09z)*3)}
.bv-s8xss{width:130%;right:-55%;top:auto;bottom:-15%;transform:none;opacity:.22}
.bv-1hz8r,.bv-vdpyc{padding-top:calc(var(--bv-wh09z)*3)}
.bv-11st8{grid-template-columns:minmax(0,1fr)}
.bv-1lh34{grid-row:auto;justify-self:start;margin-bottom:.5rem}
.bv-vqll7,.bv-104np{grid-template-columns:minmax(0,1fr)}
.bv-far0b em{display:none}
}
@media (prefers-reduced-motion:reduce){.top{transition:none}}
h1{text-wrap:balance}