.nt{--nt-topgap:var(--nav-h,56px);--nt-measure:33em;--nt-lh:1.9;--nt-gap:1.5em}.nt .nt-note{font-family:var(--w2-mono);font-size:var(--w2-x-mc);letter-spacing:normal;color:var(--w2-ink2);-webkit-font-smoothing:auto;font-weight:500;line-height:1.6}.nt-link{font-family:var(--w2-mono);font-size:var(--w2-x-mc);letter-spacing:normal;color:var(--w2-ink1);text-underline-offset:4px;-webkit-text-decoration:underline dashed;text-decoration:underline dashed;text-decoration-thickness:1px;-webkit-text-decoration-color:var(--w2-hair-d);text-decoration-color:var(--w2-hair-d);-webkit-font-smoothing:auto;transition:color var(--w2-d-slow) var(--w2-e), text-decoration-color var(--w2-d-hover) var(--w2-e);align-items:center;gap:7px;font-weight:500;line-height:1.6;display:inline-flex}@media (hover:hover) and (pointer:fine){.nt-link:hover{color:var(--w2-ink0);-webkit-text-decoration-color:var(--w2-key-l1);text-decoration-color:var(--w2-key-l1)}}.nt-idx-top{padding-block:calc(var(--w2-r1) + var(--nt-topgap)) var(--w2-r2);position:relative}.nt-idx-head{gap:var(--w2-gap);grid-template-columns:1fr 1fr;align-items:start;display:grid}.nt-idx-head-l{gap:var(--w2-inset);justify-items:start;display:grid}.nt-idx-head-r{align-content:start;gap:14px;padding-top:6px;display:grid}.nt-idx-sec{padding-block:0 var(--w2-r4);position:relative}.nt .nt-idx-list{border-bottom:var(--w2-hair-w) solid var(--w2-hair-a);list-style:none}.nt .nt-idx-item{border-top:var(--w2-hair-w) solid var(--w2-hair-b);box-shadow:var(--w2-carve)}.nt-idx-a{grid-template-columns:calc(var(--w2-col) * 1) calc(var(--w2-col) * 2) minmax(0, 1fr) calc(var(--w2-col) * 2.5);gap:var(--w2-gap);padding-block:var(--w2-inset);grid-template-areas:"i d m k";align-items:baseline;display:grid}.nt-idx-i{grid-area:i}.nt-idx-d{grid-area:d}.nt-idx-k{grid-area:k}.nt-idx-i,.nt-idx-d,.nt-idx-k{font-family:var(--w2-mono);font-size:var(--w2-x-mc);line-height:var(--w2-x-mc-lh);letter-spacing:normal;color:var(--w2-ink2);font-variant-numeric:lining-nums tabular-nums slashed-zero;font-feature-settings:"tnum" 1, "zero" 1;overflow-wrap:anywhere;-webkit-font-smoothing:auto;font-weight:500}.nt-idx-m{grid-area:m;gap:8px;min-width:0;display:grid}.nt .nt-idx-t{font-size:var(--w2-t3);line-height:var(--w2-cjk-title);letter-spacing:var(--w2-cjk-ls-title);font-weight:var(--w2-w-cjk-title);color:var(--w2-ink0)}.nt .nt-idx-s{font-size:var(--w2-x-rg);line-height:var(--w2-cjk-body);letter-spacing:0;color:var(--w2-ink1);max-width:34em}.nt-idx-go{font-family:var(--w2-mono);font-size:var(--w2-x-mc);line-height:var(--w2-x-mc-lh);letter-spacing:normal;color:var(--w2-ink1);-webkit-font-smoothing:auto;align-items:center;gap:10px;margin-top:2px;font-weight:500;display:inline-flex}.nt-idx-go:after{content:"";width:28px;height:var(--w2-hair-w);background:var(--w2-ln1);transform-origin:0;transition:transform var(--w2-d-hover) var(--w2-e);display:block;transform:scaleX(1)}@media (hover:hover) and (pointer:fine){.nt-idx-a:hover .nt-idx-go:after{transform:scaleX(1.6)}}.nt-idx-foot{margin-top:var(--w2-r3);padding-top:var(--w2-inset);border-top:var(--w2-hair-w) solid var(--w2-hair-b);box-shadow:var(--w2-carve);justify-items:start;gap:14px;display:grid}.nt-art-top{padding-block:calc(var(--w2-r1) + var(--nt-topgap)) var(--w2-r2);position:relative}.nt-art-top-in{gap:var(--w2-inset);max-width:calc(var(--w2-col) * 10);justify-items:start;display:grid}.nt .nt-dek{font-size:var(--w2-t2);letter-spacing:0;line-height:1.75;font-weight:var(--w2-w-normal);color:var(--w2-ink1);max-width:30em}.nt-art-meta{gap:10px var(--w2-inset);flex-wrap:wrap;display:flex}.nt-art-meta>span{padding-left:var(--w2-inset);border-left:var(--w2-hair-w) solid var(--w2-hair-b);font-family:var(--w2-mono);font-size:var(--w2-x-mc);letter-spacing:normal;color:var(--w2-ink2);font-variant-numeric:lining-nums tabular-nums slashed-zero;font-feature-settings:"tnum" 1, "zero" 1;-webkit-font-smoothing:auto;font-weight:500;line-height:1.6}.nt-art-meta>span:first-child{border-left:none;padding-left:0}.nt-grid{grid-template-columns:calc(var(--w2-col) * 3) minmax(0, 1fr);gap:calc(var(--w2-gap) * 2);max-width:calc(var(--w2-col) * 10);padding-bottom:var(--w2-r4);display:grid}.nt-rail{min-width:0}.nt-rail-in{top:calc(var(--nav-h,56px) + 28px);padding-right:var(--w2-inset);gap:16px;display:grid;position:sticky}.nt .nt-toc{gap:2px;list-style:none;display:grid}.nt .nt-toc-li{min-width:0}.nt-toc-a{font-size:var(--w2-x-mn);letter-spacing:0;color:var(--w2-ink2);transition:color var(--w2-d-slow) var(--w2-e);grid-template-columns:22px minmax(0,1fr);align-items:baseline;gap:10px;padding-block:5px;line-height:1.5;display:grid}.nt-toc-n{font-family:var(--w2-mono);font-size:var(--w2-x-mc);letter-spacing:normal;color:var(--w2-ink2);font-variant-numeric:lining-nums tabular-nums slashed-zero;font-feature-settings:"tnum" 1, "zero" 1;-webkit-font-smoothing:auto;font-weight:500}@media (hover:hover) and (pointer:fine){.nt-toc-a:hover{color:var(--w2-ink0)}}.nt-rail-sep{height:var(--w2-hair-w);background:var(--w2-hair-b)}.nt-body{min-width:0}.nt-sec{padding-block:var(--w2-r2) 0;scroll-margin-top:calc(var(--nav-h,56px) + 24px)}.nt-sec+.nt-sec{border-top:var(--w2-hair-w) solid var(--w2-hair-b);box-shadow:var(--w2-carve)}@supports (animation-timeline:view()){@media (prefers-reduced-motion:no-preference){.nt-sec.w2-in{animation-range:entry entry 160px}}}.nt-sec-n{font-family:var(--w2-mono);font-size:var(--w2-x-mc);line-height:var(--w2-x-mc-lh);letter-spacing:normal;color:var(--w2-ink2);font-variant-numeric:lining-nums tabular-nums slashed-zero;font-feature-settings:"tnum" 1, "zero" 1;-webkit-font-smoothing:auto;margin-bottom:12px;font-weight:500;display:block}.nt .nt-h2{font-size:var(--w2-t3);line-height:var(--w2-cjk-title);letter-spacing:var(--w2-cjk-ls-title);font-weight:var(--w2-w-cjk-title);color:var(--w2-ink0);max-width:var(--nt-measure)}.nt .nt-h3{font-size:var(--w2-t1);line-height:var(--w2-cjk-title);letter-spacing:var(--w2-cjk-ls-title);color:var(--w2-ink0);max-width:var(--nt-measure);font-weight:500}.nt .nt-b+.nt-b{margin-top:var(--nt-gap)}.nt .nt-hd+.nt-b{margin-top:16px}.nt .nt-b+.nt-block,.nt .nt-block+.nt-b{margin-top:26px}.nt .nt-p{font-size:var(--w2-x-lg);line-height:var(--nt-lh);letter-spacing:0;font-weight:var(--w2-w-normal);color:var(--w2-ink1);max-width:var(--nt-measure);text-wrap:pretty}.nt .nt-em{color:var(--w2-ink0);font-style:normal;font-weight:500}.nt .nt-ul,.nt .nt-ol{max-width:var(--nt-measure);gap:12px;list-style:none;display:grid}.nt .nt-li{font-size:var(--w2-x-lg);line-height:var(--nt-lh);letter-spacing:0;color:var(--w2-ink1);padding-left:26px;position:relative}.nt .nt-li:before{content:"";width:12px;height:var(--w2-hair-w);background:var(--w2-ln1);position:absolute;top:.95em;left:0}.nt .nt-ol{counter-reset:nt-o}.nt .nt-ol>.nt-li{counter-increment:nt-o;padding-left:30px}.nt .nt-ol>.nt-li:before{content:counter(nt-o, decimal-leading-zero);width:auto;height:auto;font-family:var(--w2-mono);font-size:var(--w2-x-mc);line-height:calc(var(--nt-lh) * var(--w2-x-lg) / var(--w2-x-mc));letter-spacing:normal;color:var(--w2-ink2);font-variant-numeric:lining-nums tabular-nums slashed-zero;font-feature-settings:"tnum" 1, "zero" 1;-webkit-font-smoothing:auto;background:0 0;font-weight:500;top:0}.nt .nt-dl{max-width:var(--nt-measure);border-bottom:var(--w2-hair-w) solid var(--w2-hair-a);display:grid}.nt .nt-dt{border-top:var(--w2-hair-w) solid var(--w2-hair-b);box-shadow:var(--w2-carve);font-family:var(--w2-mono);font-size:var(--w2-x-mc);letter-spacing:normal;color:var(--w2-ink0);overflow-wrap:anywhere;-webkit-font-smoothing:auto;padding-top:14px;font-weight:500;line-height:1.5}.nt .nt-dd{font-size:var(--w2-x-rg);letter-spacing:0;color:var(--w2-ink1);padding-block:6px 14px;line-height:1.8}.nt-flag{max-width:var(--nt-measure);padding-left:var(--w2-inset);border-left:var(--w2-hair-w) solid var(--w2-ln1)}.nt-flag-k{font-family:var(--w2-mono);font-size:var(--w2-x-mc);line-height:var(--w2-x-mc-lh);letter-spacing:normal;text-transform:uppercase;color:var(--w2-ink2);-webkit-font-smoothing:auto;margin-bottom:8px;font-weight:500;display:block}.nt .nt-flag-p{font-size:var(--w2-x-rg);letter-spacing:0;color:var(--w2-ink0);line-height:1.85}.nt-pre{max-width:var(--nt-measure);background:var(--w2-sf1);border:var(--w2-hair-w) solid var(--w2-hair-b);overscroll-behavior-x:contain;margin:0;padding:16px 18px;overflow-x:auto}.nt-pre:focus-visible{box-shadow:var(--w2-focus);outline:none}.nt-code{font-family:var(--w2-mono);font-size:var(--w2-x-mn);letter-spacing:normal;color:var(--w2-ink0);white-space:pre;font-variant-numeric:lining-nums tabular-nums slashed-zero;font-feature-settings:"tnum" 1, "zero" 1;-webkit-font-smoothing:auto;font-weight:500;line-height:1.75;display:block}.nt-code .nt-c{color:var(--w2-ink2)}.nt-cap{max-width:var(--nt-measure);font-family:var(--w2-mono);font-size:var(--w2-x-mc);letter-spacing:normal;color:var(--w2-ink2);-webkit-font-smoothing:auto;margin-top:10px;font-weight:500;line-height:1.6;display:block}.nt-k{border-radius:var(--w2-rd2);background:var(--w2-hair-a);font-family:var(--w2-mono);letter-spacing:normal;color:var(--w2-ink0);overflow-wrap:anywhere;-webkit-font-smoothing:auto;padding:2px 5px;font-size:.88em;font-weight:500}.nt-end{max-width:var(--nt-measure);margin-top:var(--w2-r2);padding-top:var(--w2-inset);border-top:var(--w2-hair-w) solid var(--w2-hair-b);box-shadow:var(--w2-carve);justify-items:start;gap:16px;display:grid}@media (max-width:1280px){.nt-grid,.nt-art-top-in{max-width:none}.nt-grid{grid-template-columns:calc(var(--w2-col) * 3) minmax(0, 1fr)}}@media (max-width:1024px){.nt-idx-head{grid-template-columns:1fr}.nt-idx-head-r{padding-top:0}.nt-grid{gap:var(--w2-r2);grid-template-columns:minmax(0,1fr)}.nt-rail-in{padding-right:0;position:static}.nt .nt-toc{gap:2px var(--w2-gap);grid-template-columns:1fr 1fr}.nt-rail-in{padding-bottom:var(--w2-inset);border-bottom:var(--w2-hair-w) solid var(--w2-hair-b)}.nt-idx-a{grid-template-columns:calc(var(--w2-col) * 1) calc(var(--w2-col) * 2) minmax(0, 1fr);row-gap:12px;column-gap:var(--w2-gap);grid-template-areas:"i d m"". .k"}}@media (max-width:768px){.nt .nt-idx-t,.nt .nt-h2{font-size:var(--w2-t2)}.nt .nt-dek{font-size:var(--w2-x-lg);line-height:var(--nt-lh)}.nt .nt-p,.nt .nt-h2,.nt .nt-h3,.nt .nt-ul,.nt .nt-ol,.nt .nt-dl,.nt .nt-dek,.nt .nt-idx-s,.nt-flag,.nt-pre,.nt-cap,.nt-end{max-width:none}}@media (max-width:640px){.nt{--nt-lh:1.85;--nt-gap:1.4em}.nt .nt-toc{grid-template-columns:1fr}.nt-idx-a{row-gap:10px;column-gap:var(--w2-gap);grid-template-columns:auto minmax(0,1fr);grid-template-areas:"i d""m m""k k";align-items:baseline;padding-block:16px}.nt-idx-d{justify-self:end}.nt .nt-idx-t{font-size:var(--w2-t1)}.nt-sec{padding-block:var(--w2-r2) 0}.nt-pre{padding:14px}.nt-flag{padding-left:16px}.nt .nt-li{padding-left:22px}.nt .nt-ol>.nt-li{padding-left:28px}}