:root{--_1dv44t:#926ee5;--_1ynpgm:#e2e6ee;--_1oj37c:#426285;--_1s3l1z:#0e1420;--_wblcdc:#467aa0;--_1nrrun:#f8fafb;--_p71l71:#2e384d;color-scheme:dark;--_t5o0pi:#7ea4cd;--_1hlowr:#181e2a;--_s8sizo:#9ca6ba}
:root{--_1lde87:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--_1sjute:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--_5d0xoh:1.45rem;--_1aff4u:1040px;--_1fqpf0:26px}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:4.95rem}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{color:var(--_1ynpgm);font:17px/1.85 var(--_1lde87);overflow-wrap:anywhere;margin:0;background:var(--_1s3l1z)}
a{color:var(--_t5o0pi);text-underline-offset:3px}
summary:focus-visible,a:focus-visible{outline:2px solid var(--_t5o0pi);outline-offset:3px;border-radius:3px}
svg{display:block}
h3,h2,h1{color:var(--_1ynpgm);line-height:1.3;font-family:var(--_1sjute);margin:0}
._d83gau{padding:0 1.4rem;margin:0 auto;max-width:var(--_1aff4u)}
/* top bar */
._jxfr52{border-bottom:1px solid var(--_p71l71)}
._jxfr52 ._d83gau{justify-content:space-between;display:flex;gap:1.1rem;height:3.85rem;align-items:center}
._rgpp6q{color:var(--_1ynpgm);gap:.6rem;display:flex;font-size:1.05rem;min-width:0;font-weight:700;text-decoration:none;align-items:center}
._rgpp6q ._q99vco{height:26px;width:26px;flex:none}
._1q8jkn{color:var(--_s8sizo);font-size:.9rem;white-space:nowrap}
/* intro */
._1lbze6{overflow:hidden;background:radial-gradient(120% 90% at 85% 40%,color-mix(in srgb,var(--_1oj37c) 22%,var(--_1s3l1z)),var(--_1s3l1z) 70%);position:relative}
._1lbze6 ._d83gau{min-height:min(78vh,640px);padding-top:calc(var(--_5d0xoh)*4);flex-direction:column;justify-content:center;position:relative;display:flex;padding-bottom:calc(var(--_5d0xoh)*4)}
._16nl31{right:-4%;pointer-events:none;transform:translateY(-50%);position:absolute;top:50%;width:min(56%,700px)}
._16nl31 ._yc9nn6{height:auto;width:100%}
._19b1nz{max-width:39.6rem;position:relative}
._1ipx1c{margin:0 0 1.3rem;color:var(--_t5o0pi);letter-spacing:.2em;font-size:.9rem;font-weight:700}
._1lbze6 h1{letter-spacing:-.01em;font-size:clamp(2.4rem,6.4vw,4.85rem);line-height:1.12;font-weight:900}
._zebhub{line-height:1.7;margin:1.55rem 0 2.2rem;color:var(--_s8sizo);font-size:clamp(1.15rem,2.2vw,1.45rem)}
._1pfdtw{align-self:flex-start;display:inline-flex;border-radius:999px;padding:.9rem 1.55rem;gap:.65rem;font-weight:700;color:var(--_1nrrun);text-decoration:none;background:var(--_1oj37c);align-items:center}
._1pfdtw svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2}
._1pfdtw:hover{background:var(--_wblcdc)}
/* layout */
._1cuknx{display:grid;gap:calc(var(--_5d0xoh)*4);align-items:start;grid-template-columns:220px minmax(0,1fr)}
._10f2hq{position:sticky;top:2.2rem;padding-top:calc(var(--_5d0xoh)*4)}
._1eokqg{font-size:.8rem;margin:0 0 .9rem;color:var(--_s8sizo);letter-spacing:.24em;font-weight:700}
._10f2hq ol{list-style:none;border-left:2px solid var(--_p71l71);padding:0;margin:0;counter-reset:_7dwfx1}
._10f2hq li{counter-increment:_7dwfx1}
._10f2hq ._jv4hg9::after{content:"";counter-increment:_7dwfx1}
._10f2hq ._13p0q1{counter-increment:none}
._10f2hq a{border-left:2px solid transparent;color:var(--_s8sizo);display:flex;line-height:1.45;gap:.75rem;padding:.45rem 0 .45rem 1.1rem;margin-left:-2px;text-decoration:none;font-size:1rem}
._10f2hq a::before{content:counter(_7dwfx1,decimal-leading-zero);font-variant-numeric:tabular-nums;padding-top:.1rem;color:color-mix(in srgb,var(--_s8sizo) 70%,transparent);font-weight:700;flex:none;font-size:.85rem}
._10f2hq ._13p0q1 a::before{content:"+"}
._10f2hq a:hover{color:var(--_1ynpgm)}
._10f2hq a._1nrrun{color:var(--_1ynpgm);border-left-color:var(--_1oj37c);font-weight:700}
._10f2hq a._1nrrun::before{color:var(--_t5o0pi)}
._scspik{max-width:50.6rem;counter-reset:_1msrjt;min-width:0}
/* chapters */
._pxs6bk,._lndnnf{border-bottom:1px solid var(--_p71l71);padding:calc(var(--_5d0xoh)*4.5) 0 calc(var(--_5d0xoh)*1.5)}
._pxs6bk:not(._1ob9ku),._lndnnf{counter-increment:_1msrjt}
._1ob9ku{border:0;padding:0}
._1u4er8::before,._lndnnf::before{-webkit-text-stroke:1.5px var(--_1oj37c);font:900 clamp(3.3rem,7vw,5.05rem)/1 var(--_1sjute);letter-spacing:-.02em;content:counter(_1msrjt,decimal-leading-zero);display:block;margin-bottom:1rem;color:transparent}
._lndnnf h2,._19z5yi h2{margin-bottom:1.3rem;font-weight:800;font-size:clamp(1.7rem,3.4vw,2.4rem)}
._d00lan{color:var(--_s8sizo);margin:-.4rem 0 2rem}
._lndnnf h3{margin:2.4rem 0 .65rem;font-size:1.3rem}
._lndnnf h3::before{display:inline-block;width:.6rem;content:"";border-radius:50%;height:.6rem;vertical-align:.18em;background:var(--_1dv44t);margin-right:.65rem}
._lndnnf p{margin:0 0 1.3rem}
._lndnnf>p:first-of-type{color:var(--_1ynpgm);font-size:1.12em}
._lndnnf ul,._lndnnf ol{margin:0 0 1.45rem;padding-left:1.55rem}
._lndnnf li{margin:.45rem 0}
._lndnnf li::marker{color:var(--_t5o0pi);font-weight:700}
/* downloads */
._17z3bi{list-style:none;border-top:1px solid var(--_p71l71);padding:0;margin:0}
._17z3bi a{border-bottom:1px solid var(--_p71l71);color:var(--_1ynpgm);padding:1.1rem .45rem;display:grid;gap:1.1rem;grid-template-columns:2.85rem minmax(0,1fr) auto;text-decoration:none;align-items:center}
._17z3bi li:last-child a{border-bottom:0}
._17z3bi a:hover{background:color-mix(in srgb,var(--_1oj37c) 8%,transparent)}
._17z3bi svg{width:2.85rem;height:2.85rem;padding:.6rem;border-radius:var(--_1fqpf0);background:color-mix(in srgb,var(--_1oj37c) 14%,var(--_1hlowr));fill:none;stroke:var(--_t5o0pi);stroke-width:1.7}
._17z3bi b{font-size:1.2rem;display:block}
._17z3bi small{color:var(--_s8sizo);display:block;line-height:1.4;font-size:.95rem}
._17z3bi em{color:var(--_t5o0pi);font-style:normal;font-weight:700;white-space:nowrap;font-size:.95rem}
/* steps */
._4ax1gr h3{margin-bottom:1.3rem;font-size:1.25rem}
._1kbtrm{counter-reset:_su46h9;list-style:none;padding:0;margin:0}
._1kbtrm li{column-gap:1rem;counter-increment:_su46h9;display:grid;grid-template-columns:3.5rem minmax(0,1fr);padding:1.1rem 0;border-top:1px dashed var(--_p71l71)}
._1kbtrm li::before{content:counter(_su46h9);color:var(--_t5o0pi);font:800 2.2rem/1 var(--_1sjute);grid-row:span 2}
._1kbtrm b,._1kbtrm strong{font-size:1.1rem}
._1kbtrm p{margin:.2rem 0 0;color:var(--_s8sizo);font-size:1.05rem}
/* compare */
._hea1mb{margin:0 -.2rem;overflow-x:auto}
._1cqufd{width:100%;border-collapse:collapse;font-size:1rem;min-width:33rem}
._1cqufd caption{text-align:left;caption-side:top;padding-bottom:.9rem;font-weight:700}
._1cqufd td,._1cqufd th{border-bottom:1px solid var(--_p71l71);padding:.85rem .9rem;text-align:left;vertical-align:top}
._1cqufd thead th{border-bottom:2px solid var(--_1ynpgm);color:var(--_s8sizo);font-size:.9rem;letter-spacing:.06em}
._1cqufd tbody tr:nth-child(odd){background:color-mix(in srgb,var(--_1hlowr) 70%,transparent)}
/* notes */
._uerqoc{display:grid;gap:0}
._1x8qfi{column-gap:1.55rem;border-top:1px solid var(--_p71l71);display:grid;padding:1.45rem 0;grid-template-columns:8.25rem minmax(0,1fr)}
._cwld7s{order:-1;grid-row:span 2;align-self:start;font-size:.85rem;font-weight:700;color:var(--_t5o0pi);padding:.2rem .6rem;border:1px solid currentColor;border-radius:var(--_1fqpf0);text-align:center;line-height:1.5}
._1x8qfi._7i9p4f ._cwld7s{color:var(--_1dv44t)}
._1x8qfi._4nevws ._cwld7s{color:var(--_s8sizo)}
._1x8qfi h3{font-size:1.2rem}
._1x8qfi p{color:var(--_s8sizo);font-size:1.05rem;margin:.4rem 0 0}
/* faq */
._v6on7v details{border-top:1px solid var(--_p71l71)}
._v6on7v details:last-of-type{border-bottom:1px solid var(--_p71l71)}
._v6on7v summary{padding:1.2rem 0;justify-content:space-between;list-style:none;display:flex;gap:1.1rem;font-size:1.15rem;font-weight:700;cursor:pointer}
._v6on7v summary::-webkit-details-marker{display:none}
._v6on7v summary::after{content:"+";flex:none;width:1.85rem;height:1.85rem;border-radius:50%;border:1px solid var(--_p71l71);display:grid;place-items:center;color:var(--_t5o0pi);font-weight:400}
._v6on7v details[open] summary::after{content:"−";background:var(--_1oj37c);border-color:var(--_1oj37c);color:var(--_1nrrun)}
._v6on7v details p{margin:0 0 1.3rem;color:var(--_s8sizo)}
/* glossary */
._95p18o{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;background:var(--_p71l71);border:1px solid var(--_p71l71);border-radius:var(--_1fqpf0);overflow:hidden}
._95p18o div{padding:1.1rem 1.2rem;background:var(--_1s3l1z)}
._95p18o dt{font-family:var(--_1sjute);font-weight:800}
._95p18o dd{margin:.35rem 0 0;line-height:1.65;color:var(--_s8sizo);font-size:1rem}
/* more */
._b8qi4u{padding:calc(var(--_5d0xoh)*4.5) 0 calc(var(--_5d0xoh)*3)}
._b8qi4u h2{margin-bottom:1.3rem;font-size:1.45rem}
._awr92x{gap:2.2rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
._aox6to h2,._b8qi4u h3{color:var(--_s8sizo);letter-spacing:.2em;font-family:var(--_1lde87);margin:0 0 .65rem;font-size:.85rem}
._nkwqhk{flex-direction:column;display:flex}
._aox6to a,._nkwqhk a{border-bottom:1px solid var(--_p71l71);color:var(--_1ynpgm);display:block;font-size:1.05rem;text-decoration:none;padding:.55rem 0}
._aox6to a:hover,._nkwqhk a:hover{color:var(--_t5o0pi)}
._aox6to{margin-top:2.2rem}
._aox6to ul{list-style:none;padding:0;margin:0}
._1o3xfx{display:flex;flex-wrap:wrap;gap:.55rem}
._1o3xfx a{padding:.35rem .9rem;color:var(--_1ynpgm);background:color-mix(in srgb,var(--_1oj37c) 12%,var(--_1hlowr));border-radius:999px;text-decoration:none;font-size:.95rem}
._1o3xfx a:hover{color:var(--_1nrrun);background:var(--_1oj37c)}
/* footer */
._1k6zhq{color:var(--_s8sizo);border-top:1px solid var(--_p71l71);font-size:.9rem}
._1k6zhq ._d83gau{padding-bottom:1.45rem;gap:.55rem 1.65rem;justify-content:space-between;display:flex;padding-top:1.45rem;flex-wrap:wrap}
._1k6zhq p{margin:0}
._12fxem{position:fixed;right:1.1rem;bottom:1.1rem;z-index:20;display:inline-flex;align-items:center;gap:.4rem;padding:.6rem 1rem;border-radius:999px;background:var(--_1hlowr);border:1px solid var(--_p71l71);color:var(--_1ynpgm);font-size:.9rem;text-decoration:none;box-shadow:0 6px 20px color-mix(in srgb,var(--_1ynpgm) 14%,transparent);transition:opacity .2s,transform .2s}
._12fxem svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.2}
._18n262 ._12fxem:not(._v4qqx3){opacity:0;visibility:hidden;pointer-events:none;transform:translateY(.65rem)}
@media (max-width:900px){
._1cuknx{grid-template-columns:minmax(0,1fr);gap:0}
._10f2hq{top:0;z-index:15;padding:.6rem 0;margin:0 -1.25rem;background:color-mix(in srgb,var(--_1s3l1z) 92%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--_p71l71)}
._1eokqg{position:absolute;left:-999px}
._10f2hq ol{padding:0 1.4rem;border:0;scrollbar-width:none;display:flex;gap:.45rem;overflow-x:auto}
._10f2hq ol::-webkit-scrollbar{display:none}
._10f2hq a{white-space:nowrap;max-width:14em;overflow:hidden;text-overflow:ellipsis;display:block;margin:0;padding:.4rem .95rem;border:1px solid var(--_p71l71);border-radius:999px;font-size:.9rem}
._10f2hq a::before{margin-right:.45rem}
._10f2hq a._1nrrun{background:var(--_1oj37c);border-color:var(--_1oj37c);color:var(--_1nrrun)}
._10f2hq a._1nrrun::before{color:var(--_1nrrun)}
._scspik{max-width:none}
}
@media (max-width:640px){
body{font-size:16px}
._1q8jkn{display:none}
._1lbze6 ._d83gau{padding-top:calc(var(--_5d0xoh)*3);padding-bottom:calc(var(--_5d0xoh)*3);min-height:0}
._16nl31{bottom:-15%;right:-55%;top:auto;width:130%;transform:none;opacity:.22}
._pxs6bk,._lndnnf{padding-top:calc(var(--_5d0xoh)*3)}
._1x8qfi{grid-template-columns:minmax(0,1fr)}
._cwld7s{grid-row:auto;margin-bottom:.55rem;justify-self:start}
._awr92x,._95p18o{grid-template-columns:minmax(0,1fr)}
._17z3bi em{display:none}
}
@media (prefers-reduced-motion:reduce){._12fxem{transition:none}}
._1qkrtc ._d83gau{flex-direction:row-reverse}
._ijgqgr{background:var(--_1hlowr)}
._ijgqgr ._d83gau{padding-top:calc(var(--_5d0xoh)*3);padding-bottom:calc(var(--_5d0xoh)*3);min-height:0}
._zaoo2e{grid-template-columns:1fr}
._zaoo2e ._10f2hq{padding-top:calc(var(--_5d0xoh)*2);position:static}
._zaoo2e ._10f2hq ol{display:flex;gap:.35rem .55rem;border-left:0;flex-wrap:wrap}
._zaoo2e ._10f2hq a{padding:.35rem .75rem;margin:0;border:1px solid var(--_p71l71);border-radius:var(--_1fqpf0)}
._zaoo2e ._10f2hq a._1nrrun{border-color:var(--_1oj37c)}
._cjrxt{gap:.55rem 1.65rem;justify-content:space-between;display:flex;flex-wrap:wrap}
._cjrxt p{margin:0}


._1e67lq{color:var(--_s8sizo);font-size:.9rem;margin:1rem 0 0}._1e67lq span{opacity:.8;margin-right:.55rem}._1e67lq a{color:var(--_s8sizo)}
h1{text-wrap:balance}