html{--_113653:rgb(9,52,36);--_192epn:1.05rem;--_16dqhi:rgb(49,170,146);--_p5sy54:rgb(24,115,136);--_1evvdu:rgb(253,253,251);--_1imh8g:1100px;--_cqyxdl:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;--_18oxgh:rgb(53,177,131);--_hl632w:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;--_1bltkn:rgb(234,229,215);--_9dbqls:rgb(36,122,90);color-scheme:light;--_hw6t7z:6px;--_1afwhx:rgb(122,114,92);--_1nx1b1:rgb(251,251,248);--_pyhv96:rgb(40,35,21)}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:4.3rem}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{background:var(--_1nx1b1);font:17px/1.85 var(--_hl632w);margin:0;color:var(--_pyhv96);overflow-wrap:anywhere}
a{text-underline-offset:3px;color:var(--_9dbqls)}
summary:focus-visible,a:focus-visible{outline:2px solid var(--_9dbqls);outline-offset:3px;border-radius:3px}
svg{display:block}
h3,h2,h1{font-family:var(--_cqyxdl);margin:0;color:var(--_pyhv96);line-height:1.3}
._1af8r6{margin:0 auto;max-width:var(--_1imh8g);padding:0 1.2rem}
/* top bar */
._1t2r56{border-bottom:1px solid var(--_1bltkn)}
._1t2r56 ._1af8r6{height:3.35rem;justify-content:space-between;align-items:center;gap:.95rem;display:flex}
._lkxz3c{min-width:0;text-decoration:none;gap:.5rem;font-weight:700;font-size:.9rem;align-items:center;color:var(--_pyhv96);display:flex}
._lkxz3c ._12u4xb{width:26px;flex:none;height:26px}
._1k4avc{white-space:nowrap;font-size:.75rem;color:var(--_1afwhx)}
/* intro */
._ql6jem{position:relative;overflow:hidden;background:radial-gradient(120% 90% at 85% 40%,color-mix(in srgb,var(--_18oxgh) 22%,var(--_1nx1b1)),var(--_1nx1b1) 70%)}
._ql6jem ._1af8r6{min-height:min(78vh,640px);padding-bottom:calc(var(--_192epn)*4);justify-content:center;position:relative;flex-direction:column;display:flex;padding-top:calc(var(--_192epn)*4)}
._x5w4bk{width:min(56%,700px);right:-4%;top:50%;position:absolute;transform:translateY(-50%);pointer-events:none}
._x5w4bk ._tp43ps{width:100%;height:auto}
._1vtlaj{max-width:34.2rem;position:relative}
._pnahfp{letter-spacing:.2em;font-weight:700;margin:0 0 1.15rem;font-size:.75rem;color:var(--_9dbqls)}
._ql6jem h1{font-weight:900;font-size:clamp(2.1rem,6.4vw,4.2rem);line-height:1.12;letter-spacing:-.01em}
._1g5y3x{margin:1.35rem 0 1.9rem;font-size:clamp(1rem,2.2vw,1.25rem);line-height:1.7;color:var(--_1afwhx)}
._1vk4k5{align-self:flex-start;border-radius:999px;text-decoration:none;font-weight:700;color:var(--_113653);align-items:center;background:var(--_18oxgh);gap:.55rem;padding:.75rem 1.35rem;display:inline-flex}
._1vk4k5 svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2}
._1vk4k5:hover{background:var(--_16dqhi)}
/* layout */
._uqe5k4{display:grid;grid-template-columns:220px minmax(0,1fr);align-items:start;gap:calc(var(--_192epn)*4)}
._kin867{position:sticky;top:1.9rem;padding-top:calc(var(--_192epn)*4)}
._18t5uo{font-weight:700;letter-spacing:.24em;margin:0 0 .75rem;font-size:.7rem;color:var(--_1afwhx)}
._kin867 ol{counter-reset:_1f9eeo;margin:0;border-left:2px solid var(--_1bltkn);padding:0;list-style:none}
._kin867 li{counter-increment:_1f9eeo}
._kin867 ._bpegrj::after{content:"";counter-increment:_1f9eeo}
._kin867 ._1ja97r{counter-increment:none}
._kin867 a{border-left:2px solid transparent;font-size:.85rem;text-decoration:none;margin-left:-2px;display:flex;padding:.4rem 0 .4rem .95rem;line-height:1.45;color:var(--_1afwhx);gap:.65rem}
._kin867 a::before{font-variant-numeric:tabular-nums;font-weight:700;padding-top:.1rem;font-size:.75rem;flex:none;color:color-mix(in srgb,var(--_1afwhx) 70%,transparent);content:counter(_1f9eeo,decimal-leading-zero)}
._kin867 ._1ja97r a::before{content:"+"}
._kin867 a:hover{color:var(--_pyhv96)}
._kin867 a._113653{color:var(--_pyhv96);border-left-color:var(--_18oxgh);font-weight:700}
._kin867 a._113653::before{color:var(--_9dbqls)}
._2wt7fg{min-width:0;max-width:43.7rem;counter-reset:_1g3drp}
/* chapters */
._fphwjr,._58l3vo{padding:calc(var(--_192epn)*4.5) 0 calc(var(--_192epn)*1.5);border-bottom:1px solid var(--_1bltkn)}
._fphwjr:not(._kkckmy),._58l3vo{counter-increment:_1g3drp}
._kkckmy{padding:0;border:0}
._1dtmfe::before,._58l3vo::before{-webkit-text-stroke:1.5px var(--_18oxgh);display:block;letter-spacing:-.02em;content:counter(_1g3drp,decimal-leading-zero);color:transparent;margin-bottom:.85rem;font:900 clamp(2.85rem,7vw,4.35rem)/1 var(--_cqyxdl)}
._xhxorl h2,._58l3vo h2{font-weight:800;font-size:clamp(1.45rem,3.4vw,2.1rem);margin-bottom:1.15rem}
._e7ibm5{margin:-.4rem 0 1.7rem;color:var(--_1afwhx)}
._58l3vo h3{margin:2.1rem 0 .55rem;font-size:1.15rem}
._58l3vo h3::before{margin-right:.55rem;content:"";vertical-align:.18em;border-radius:50%;height:.5rem;width:.5rem;background:var(--_p5sy54);display:inline-block}
._58l3vo p{margin:0 0 1.15rem}
._58l3vo>p:first-of-type{color:var(--_pyhv96);font-size:1.12em}
._58l3vo ol,._58l3vo ul{margin:0 0 1.25rem;padding-left:1.35rem}
._58l3vo li{margin:.4rem 0}
._58l3vo li::marker{font-weight:700;color:var(--_9dbqls)}
/* downloads */
._1cpipi{border-top:1px solid var(--_1bltkn);margin:0;padding:0;list-style:none}
._1cpipi a{text-decoration:none;align-items:center;gap:.95rem;display:grid;color:var(--_pyhv96);grid-template-columns:2.45rem minmax(0,1fr) auto;border-bottom:1px solid var(--_1bltkn);padding:.95rem .4rem}
._1cpipi li:last-child a{border-bottom:0}
._1cpipi a:hover{background:color-mix(in srgb,var(--_18oxgh) 8%,transparent)}
._1cpipi svg{width:2.45rem;height:2.45rem;padding:.5rem;border-radius:var(--_hw6t7z);background:color-mix(in srgb,var(--_18oxgh) 14%,var(--_1evvdu));fill:none;stroke:var(--_9dbqls);stroke-width:1.7}
._1cpipi b{display:block;font-size:1.05rem}
._1cpipi small{display:block;line-height:1.4;font-size:.8rem;color:var(--_1afwhx)}
._1cpipi em{font-weight:700;white-space:nowrap;font-size:.8rem;font-style:normal;color:var(--_9dbqls)}
/* steps */
._xskulo h3{font-size:1.1rem;margin-bottom:1.15rem}
._1sxmoy{margin:0;padding:0;counter-reset:_1pfyq6;list-style:none}
._1sxmoy li{column-gap:.85rem;counter-increment:_1pfyq6;grid-template-columns:3.05rem minmax(0,1fr);border-top:1px dashed var(--_1bltkn);display:grid;padding:.95rem 0}
._1sxmoy li::before{content:counter(_1pfyq6);grid-row:span 2;font:800 1.9rem/1 var(--_cqyxdl);color:var(--_9dbqls)}
._1sxmoy b,._1sxmoy strong{font-size:.95rem}
._1sxmoy p{font-size:.9rem;color:var(--_1afwhx);margin:.2rem 0 0}
/* compare */
._tko08t{overflow-x:auto;margin:0 -.2rem}
._vtlhe9{width:100%;border-collapse:collapse;font-size:.9rem;min-width:28.5rem}
._vtlhe9 caption{font-weight:700;caption-side:top;padding-bottom:.75rem;text-align:left}
._vtlhe9 td,._vtlhe9 th{padding:.7rem .75rem;vertical-align:top;text-align:left;border-bottom:1px solid var(--_1bltkn)}
._vtlhe9 thead th{letter-spacing:.06em;font-size:.8rem;border-bottom:2px solid var(--_pyhv96);color:var(--_1afwhx)}
._vtlhe9 tbody tr:nth-child(odd){background:color-mix(in srgb,var(--_1evvdu) 70%,transparent)}
/* notes */
._1bb20z{gap:0;display:grid}
._1o6ruf{column-gap:1.35rem;border-top:1px solid var(--_1bltkn);grid-template-columns:7.15rem minmax(0,1fr);display:grid;padding:1.25rem 0}
._3pex4f{order:-1;grid-row:span 2;align-self:start;font-size:.75rem;font-weight:700;color:var(--_9dbqls);padding:.2rem .5rem;border:1px solid currentColor;border-radius:var(--_hw6t7z);text-align:center;line-height:1.5}
._1o6ruf._1rrrs1 ._3pex4f{color:var(--_p5sy54)}
._1o6ruf._dpgm6w ._3pex4f{color:var(--_1afwhx)}
._1o6ruf h3{font-size:1.05rem}
._1o6ruf p{margin:.35rem 0 0;font-size:.9rem;color:var(--_1afwhx)}
/* faq */
._ijruxi details{border-top:1px solid var(--_1bltkn)}
._ijruxi details:last-of-type{border-bottom:1px solid var(--_1bltkn)}
._ijruxi summary{cursor:pointer;font-size:1rem;font-weight:700;justify-content:space-between;padding:1.05rem 0;gap:.95rem;display:flex;list-style:none}
._ijruxi summary::-webkit-details-marker{display:none}
._ijruxi summary::after{content:"+";flex:none;width:1.6rem;height:1.6rem;border-radius:50%;border:1px solid var(--_1bltkn);display:grid;place-items:center;color:var(--_9dbqls);font-weight:400}
._ijruxi details[open] summary::after{content:"−";background:var(--_18oxgh);border-color:var(--_18oxgh);color:var(--_113653)}
._ijruxi details p{margin:0 0 1.15rem;color:var(--_1afwhx)}
/* glossary */
._1owm8o{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;background:var(--_1bltkn);border:1px solid var(--_1bltkn);border-radius:var(--_hw6t7z);overflow:hidden}
._1owm8o div{background:var(--_1nx1b1);padding:.95rem 1.05rem}
._1owm8o dt{font-family:var(--_cqyxdl);font-weight:800}
._1owm8o dd{font-size:.85rem;margin:.3rem 0 0;line-height:1.65;color:var(--_1afwhx)}
/* more */
._1b1krz{padding:calc(var(--_192epn)*4.5) 0 calc(var(--_192epn)*3)}
._1b1krz h2{margin-bottom:1.15rem;font-size:1.25rem}
._12dyoe{gap:1.9rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
._1b84l7 h2,._1b1krz h3{letter-spacing:.2em;font-family:var(--_hl632w);font-size:.75rem;margin:0 0 .55rem;color:var(--_1afwhx)}
._c76yhn{flex-direction:column;display:flex}
._c76yhn a,._1b84l7 a{text-decoration:none;display:block;font-size:.9rem;color:var(--_pyhv96);padding:.5rem 0;border-bottom:1px solid var(--_1bltkn)}
._1b84l7 a:hover,._c76yhn a:hover{color:var(--_9dbqls)}
._1b84l7{margin-top:1.9rem}
._1b84l7 ul{margin:0;padding:0;list-style:none}
._1qnitr{gap:.5rem;flex-wrap:wrap;display:flex}
._1qnitr a{font-size:.85rem;border-radius:999px;text-decoration:none;background:color-mix(in srgb,var(--_18oxgh) 12%,var(--_1evvdu));color:var(--_pyhv96);padding:.3rem .75rem}
._1qnitr a:hover{color:var(--_113653);background:var(--_18oxgh)}
/* footer */
._qlcbud{border-top:1px solid var(--_1bltkn);font-size:.8rem;color:var(--_1afwhx)}
._qlcbud ._1af8r6{flex-wrap:wrap;justify-content:space-between;display:flex;padding-top:1.25rem;gap:.5rem 1.45rem;padding-bottom:1.25rem}
._qlcbud p{margin:0}
._n2dmso{position:fixed;right:.95rem;bottom:.95rem;z-index:20;display:inline-flex;align-items:center;gap:.35rem;padding:.5rem .85rem;border-radius:999px;background:var(--_1evvdu);border:1px solid var(--_1bltkn);color:var(--_pyhv96);font-size:.8rem;text-decoration:none;box-shadow:0 6px 20px color-mix(in srgb,var(--_pyhv96) 14%,transparent);transition:opacity .2s,transform .2s}
._n2dmso svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.2}
._sos2qx ._n2dmso:not(._h46ilm){transform:translateY(.55rem);opacity:0;visibility:hidden;pointer-events:none}
@media (max-width:900px){
._uqe5k4{gap:0;grid-template-columns:minmax(0,1fr)}
._kin867{top:0;z-index:15;padding:.5rem 0;margin:0 -1.25rem;background:color-mix(in srgb,var(--_1nx1b1) 92%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--_1bltkn)}
._18t5uo{left:-999px;position:absolute}
._kin867 ol{overflow-x:auto;scrollbar-width:none;display:flex;gap:.4rem;padding:0 1.2rem;border:0}
._kin867 ol::-webkit-scrollbar{display:none}
._kin867 a{white-space:nowrap;max-width:14em;overflow:hidden;text-overflow:ellipsis;display:block;margin:0;padding:.35rem .8rem;border:1px solid var(--_1bltkn);border-radius:999px;font-size:.8rem}
._kin867 a::before{margin-right:.4rem}
._kin867 a._113653{background:var(--_18oxgh);border-color:var(--_18oxgh);color:var(--_113653)}
._kin867 a._113653::before{color:var(--_113653)}
._2wt7fg{max-width:none}
}
@media (max-width:640px){
body{font-size:16px}
._1k4avc{display:none}
._ql6jem ._1af8r6{min-height:0;padding-bottom:calc(var(--_192epn)*3);padding-top:calc(var(--_192epn)*3)}
._x5w4bk{right:-55%;opacity:.22;transform:none;bottom:-15%;top:auto;width:130%}
._fphwjr,._58l3vo{padding-top:calc(var(--_192epn)*3)}
._1o6ruf{grid-template-columns:minmax(0,1fr)}
._3pex4f{margin-bottom:.5rem;justify-self:start;grid-row:auto}
._12dyoe,._1owm8o{grid-template-columns:minmax(0,1fr)}
._1cpipi em{display:none}
}
@media (prefers-reduced-motion:reduce){._n2dmso{transition:none}}
._p8usyd ._1af8r6{flex-direction:row-reverse}
._592f4z{background:var(--_1evvdu)}
._592f4z ._1af8r6{min-height:0;padding-bottom:calc(var(--_192epn)*3);padding-top:calc(var(--_192epn)*3)}
._o5lzzr{grid-template-columns:1fr}
._o5lzzr ._kin867{position:static;padding-top:calc(var(--_192epn)*2)}
._o5lzzr ._kin867 ol{flex-wrap:wrap;border-left:0;gap:.3rem .5rem;display:flex}
._o5lzzr ._kin867 a{padding:.3rem .65rem;margin:0;border:1px solid var(--_1bltkn);border-radius:var(--_hw6t7z)}
._o5lzzr ._kin867 a._113653{border-color:var(--_18oxgh)}
._t615xl{flex-wrap:wrap;justify-content:space-between;display:flex;gap:.5rem 1.45rem}
._t615xl p{margin:0}
@media (min-width:1024px){._uqe5k4{grid-template-columns:minmax(0,1fr) 220px}._kin867{order:2}}

._1phsfl{font-size:.8rem;margin:.85rem 0 0;color:var(--_1afwhx)}._1phsfl span{margin-right:.5rem;opacity:.8}._1phsfl a{color:var(--_1afwhx)}
h1{text-wrap:balance}