@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:100 700;font-display:swap;src:url(fonts/plex-sans-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:100 700;font-display:swap;src:url(fonts/plex-sans-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/plex-mono-400.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/plex-mono-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/plex-mono-600.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{--bg:#F6F8FA;--p:#FFFFFF;--p2:#EEF2F6;--ln:#DDE3EA;--ln2:#C3CCD7;--tx:#0D1B2A;--dm:#4B5B6E;--fn:#667385;
--am:#A3186E;--amS:#F8E6F0;--cy:#1A5EA6;--cyS:#E3EDF8;--gy:#4B5B6E;--gyS:#EEF2F6;--gn:#2D7A4B;--gnS:#E4F2E9;--on:#FFFFFF;
--amber:var(--am);--cyan:var(--cy);--dim:var(--dm);--shadow:none;
--mk:#FFFFFF;--mkl:#C3CCD7;--mko:#AAB5C3;--mks:#A3186E;--mkn:#0D1B2A;
--sans:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
--mono:"IBM Plex Mono",ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#09121C;--p:#0E1926;--p2:#152233;--ln:#1F3044;--ln2:#2E4460;--tx:#E6EDF5;
--dm:#9DAEC2;--fn:#7A8DA4;--am:#E26BB2;--amS:rgba(226,107,178,.14);--cy:#7FB2EC;--cyS:rgba(127,178,236,.14);
--gy:#9DAEC2;--gyS:rgba(157,174,194,.12);--gn:#67C08B;--gnS:rgba(103,192,139,.13);--on:#09121C;--shadow:none;
--mk:#0E1926;--mkl:#2E4460;--mko:#4F627B;--mks:#E26BB2;--mkn:#E6EDF5;color-scheme:dark}}
*{box-sizing:border-box}html{background:var(--bg)}
/* every scrollbar in the site's grays and thin, like the sidebar's own: the page, code blocks, tables, tabs.
   CSS only, so find-in-page, momentum and keyboard scrolling stay the browser's */
html{scrollbar-color:var(--ln2) transparent}*{scrollbar-width:thin}
@supports not (scrollbar-color:red blue){   /* Safari: no scrollbar-color yet, so the boxes inside the page get a thin bar */
 pre::-webkit-scrollbar,.tw::-webkit-scrollbar,.seg::-webkit-scrollbar,.shots::-webkit-scrollbar,.dx-toc::-webkit-scrollbar{width:8px;height:8px}
 pre::-webkit-scrollbar-track,.tw::-webkit-scrollbar-track,.seg::-webkit-scrollbar-track,.shots::-webkit-scrollbar-track,.dx-toc::-webkit-scrollbar-track{background:transparent}
 pre::-webkit-scrollbar-thumb,.tw::-webkit-scrollbar-thumb,.seg::-webkit-scrollbar-thumb,.shots::-webkit-scrollbar-thumb,.dx-toc::-webkit-scrollbar-thumb{background:var(--ln2);border-radius:4px;border:2px solid transparent;background-clip:padding-box}}
[hidden]{display:none!important}
body{margin:0;color:var(--tx);background:var(--bg);font:15px/1.5 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--cy);text-decoration:none}a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--cy);outline-offset:2px}
b,strong{font-weight:600}
.app{display:grid;grid-template-columns:minmax(0,1fr);min-height:100vh;align-content:start}
.sb{display:none}
.mtop{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--ln);background:var(--p);position:sticky;top:0;z-index:5}
.brand{font:600 17px var(--sans);letter-spacing:-.2px;color:var(--tx);display:inline-flex;align-items:center;gap:8px}
.brand:hover{text-decoration:none}
.brand svg{width:24px;height:24px;flex:none}.brand .mk{fill:var(--mk);stroke:var(--mkl)}.brand .mo{fill:var(--mko)}
.brand .ms{fill:var(--mks)}.brand .mn{fill:var(--mkn)}
.nav{display:flex;gap:16px;font-size:14px}.nav a{color:var(--dm)}.nav a.on{color:var(--tx);font-weight:500}
.main{padding:20px 16px 48px;display:grid;gap:20px;grid-template-columns:minmax(0,1fr);align-content:start;width:100%;max-width:1400px;margin:0 auto}
.col,.rail{display:grid;gap:16px;align-content:start;min-width:0}.col>div:empty{display:none}
.rail .hist{display:none}
.full{min-width:0}
.eyebrow{font-size:12px;color:var(--dm);text-transform:uppercase;letter-spacing:.06em}
h1{font:600 36px/1.1 var(--sans);letter-spacing:-.6px;margin:2px 0 0;display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
h1 .icao{font:500 15px var(--mono);color:var(--fn);letter-spacing:.02em}
.aname{color:var(--dm);font-size:16px;margin-top:2px}
.h2{font:600 18px/1.3 var(--sans);letter-spacing:-.2px;margin:14px 0 0}
.hero{font:600 32px/1.15 var(--sans);letter-spacing:-.6px;margin:0;text-wrap:balance}
.lede{color:var(--dm);font-size:16px;max-width:62ch;margin:8px 0 0}
.big{font:600 26px/1.2 var(--sans);letter-spacing:-.4px}
.note{font-size:14px;color:var(--dm);margin:6px 0 0}
.foot{font-size:12.5px;color:var(--fn);margin:8px 0 0}.foot a{color:var(--dm)}.foot a:hover{color:var(--cy)}
.card{background:var(--p);border:1px solid var(--ln);border-radius:8px;box-shadow:var(--shadow)}
.box{padding:14px 16px}.box>h3{margin:0 0 8px;font:600 12px var(--sans);text-transform:uppercase;letter-spacing:.06em}
.kv{display:flex;justify-content:space-between;gap:12px;padding:7px 0;font-size:14px;border-top:1px solid var(--ln)}
.kv:first-of-type{border-top:0}.kv>span:first-child{color:var(--dm)}.kv>span:last-child{text-align:right;font-variant-numeric:tabular-nums}
.ann{display:inline-flex;align-items:center;gap:5px;font:600 10.5px/1.6 var(--sans);letter-spacing:.06em;text-transform:uppercase;padding:0 6px;border:1px solid var(--ln2);border-radius:3px;white-space:nowrap;color:var(--gy)}
.act{color:var(--on);background:var(--am);border-color:var(--am)}.ifr{color:var(--cy);border-color:var(--cy)}
.fyi{color:var(--dm);border-color:var(--ln2)}.ok{color:var(--gn);border-color:var(--gn)}
.ann[title]{cursor:help}
.ann.new{color:var(--p);background:var(--tx);border-color:var(--tx)}
.it.new{box-shadow:inset 3px 0 0 var(--tx)}
.sbi .ann.new,.sbt .ann.new,.sba .ann.new{font-size:10px;padding:0 5px}
time[data-until],time[data-ago]{font-variant-numeric:tabular-nums;white-space:nowrap}
.flip{display:contents}
.pfresh{padding:7px 16px;font-size:12.5px;color:var(--dm);border-bottom:1px solid var(--ln);background:var(--p)}
.is-stale .fresh{color:var(--am)}.stale{border-color:var(--am)}
a.src{color:var(--dm)}a.src:hover{color:var(--cy)}
.nx{display:grid;gap:7px;padding:12px 16px;border-top:1px solid var(--ln);color:var(--tx);position:relative}.nx:first-child{border-top:0}
.nx:hover{background:var(--p2)}
.nxa{color:inherit}.nxa:hover{text-decoration:none}.nxa::after{content:"";position:absolute;inset:0}
.nxh{display:flex;align-items:center;gap:6px 12px;flex-wrap:wrap}.nxh .rname{color:var(--dm);font-size:14px;flex:0 1 auto}.nxh .chips{margin-left:auto}
.ltags{display:flex;gap:4px;flex-wrap:wrap}
.ltag{position:relative;z-index:1;font-size:12px;line-height:1.6;padding:0 7px;border:1px solid var(--ln2);border-radius:3px;color:var(--dm);white-space:nowrap;max-width:180px;overflow:hidden;text-overflow:ellipsis}
.ltag:hover{color:var(--cy);border-color:var(--cy);text-decoration:none}
.nxi{display:grid;grid-template-columns:40px minmax(0,1fr);gap:10px;align-items:baseline;font-size:14px;overflow-wrap:anywhere}.nxi>.ann{justify-self:start}
.nxm{font-size:13px;color:var(--cy);padding-left:50px}
.nxq{padding:11px 16px;border-top:1px solid var(--ln);font-size:13.5px;color:var(--dm)}.nxq:first-child{border-top:0}
.chips{display:flex;gap:4px;flex-wrap:wrap}
.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;justify-content:space-between}
.seg{display:flex;gap:24px;box-shadow:inset 0 -1px 0 var(--ln);max-width:100%;overflow-x:auto}.toolbar .seg{flex:1}
.seg a{font:500 14px var(--sans);padding:9px 0 7px;border-bottom:2px solid transparent;color:var(--dm);white-space:nowrap}
.seg a b{margin-left:5px;font-weight:500;color:var(--fn)}.seg a:hover{text-decoration:none;color:var(--tx)}
.seg a.on{color:var(--tx);border-bottom-color:var(--tx)}.seg a.on b{color:var(--tx)}
.seg button{font:500 14px var(--sans);padding:9px 0 7px;border:0;border-bottom:2px solid transparent;background:none;color:var(--dm);white-space:nowrap;cursor:pointer}
.seg button b{margin-left:5px;font-weight:500;color:var(--fn)}.seg button:hover{color:var(--tx)}
.seg button.on{color:var(--tx);border-bottom-color:var(--tx)}.seg button.on b{color:var(--tx)}
.tabs{display:inline-flex;vertical-align:top;margin:0 0 10px}#ltabs .tabs{margin:12px 0 0}
.lnk{background:none;border:0;padding:0;font:inherit;color:var(--cy);cursor:pointer}.lnk:hover{text-decoration:underline}
.lnk.dim{color:var(--dm)}.sec .lnk{font-size:13.5px}
.manage{display:flex;flex-wrap:wrap;gap:4px 16px;margin-top:10px;font-size:13.5px}.manage:empty{display:none}
.nf{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0;max-width:560px}
.nf input{flex:1 1 200px;min-width:0;border:1px solid var(--ln);border-radius:6px;background:var(--p);color:var(--tx);font:15px var(--sans);padding:7px 12px}
.nf input:focus{outline:none;border-color:var(--cy)}
.addw{position:relative;display:inline-flex}
.btn.dd::after{content:"";border:4px solid transparent;border-top-color:currentColor;margin:4px 0 0 8px}
.menu{position:absolute;top:calc(100% + 6px);left:0;z-index:20;width:max-content;min-width:240px;max-width:min(340px,calc(100vw - 32px));padding:6px;box-shadow:0 10px 30px rgba(0,0,0,.18)}
.mh{font-size:12.5px;color:var(--fn);padding:6px 10px 4px}
.mi{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border:0;border-radius:8px;background:none;color:var(--tx);font:14px var(--sans);text-align:left;cursor:pointer}
.mi:hover{background:var(--p2)}.mi input{margin:0;width:16px;height:16px;accent-color:var(--cy);flex:none}
.mi .nm,.sbi .nm,.sbt .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mi .n,.sbi .n{color:var(--fn);font-size:12.5px}
.mi.add{color:var(--cy)}.menu .nf{margin:4px 6px 6px}
.addto{display:block;margin:0 0 8px}
.addto select{font:500 14px var(--sans);color:var(--tx);background:var(--p);border:1px solid var(--ln);border-radius:8px;padding:3px 8px;margin-left:6px;max-width:60vw}
.banner{display:flex;gap:10px;align-items:flex-start;flex-wrap:wrap;padding:12px 14px;font-size:14px;color:var(--dm)}
.banner .ann{margin-top:1px}.banner span:last-child{flex:1;min-width:200px}
.lst{background:var(--p);border:1px solid var(--ln);border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.gh{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 16px 10px;font:600 12px var(--sans);text-transform:uppercase;letter-spacing:.06em}
.gh .n{color:var(--fn);font-weight:500}
.dot{width:3px;height:12px;border-radius:1px;display:inline-block;margin-right:9px;background:var(--fn);vertical-align:-1px}
.d-action{background:var(--am)}.d-ifr{background:var(--cy)}
.it{display:grid;grid-template-columns:minmax(0,1fr);gap:2px 16px;padding:11px 16px;border-top:1px solid var(--ln)}
.it .k{font-size:11.5px;color:var(--fn);text-transform:uppercase;letter-spacing:.05em}
.it .s{font-size:15px;overflow-wrap:anywhere}
.it .m{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:13.5px;white-space:nowrap}
.it .m:empty{display:none}
.more{margin-top:3px}
.why{margin-top:3px;font-size:13px;line-height:1.45;color:var(--dm)}
.more>summary{cursor:pointer;list-style:none;font-size:13.5px;color:var(--cy);display:inline-block}
.more>summary::-webkit-details-marker{display:none}
.more>summary::after{content:" \25BE";font-size:11px}.more[open]>summary::after{content:" \25B4"}
.more pre{white-space:pre-wrap;font:12px/1.55 var(--mono);color:var(--dm);background:var(--p2);border-radius:6px;padding:9px 11px;margin:6px 0 0}
.cycle>summary{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 16px;cursor:pointer;list-style:none;font:600 14px var(--sans)}
.cycle>summary::-webkit-details-marker{display:none}
.cycle>summary .chips{margin-left:auto}
.cycle:not([open])>summary:hover{background:var(--p2)}
.chev{width:12px;color:var(--fn);transition:transform .15s;display:inline-block;font-size:11px}
.cycle[open] .chev{transform:rotate(90deg)}
.fold{background:none;border:0;padding:2px 0;cursor:pointer;display:inline-flex;align-items:center;gap:6px}.fold[aria-expanded=true] .chev{transform:rotate(90deg)}
.fold:hover .chev{color:var(--tx)}
.hlist{display:grid;gap:10px}
.hrow{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:7px 0;border-top:1px solid var(--ln);font-size:14px;color:var(--tx)}
.hrow:first-of-type{border-top:0}.hrow .chips{flex-wrap:nowrap}.hrow:hover{text-decoration:none;color:var(--cy)}
.none{text-align:center;padding:36px 16px;color:var(--dm)}.none b{display:block;color:var(--gn);font-size:16px;margin-bottom:4px}
.legend{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;font-size:13.5px;color:var(--dm)}
.legend>span{display:inline-flex;align-items:center;gap:8px}
.rail .legend{flex-direction:column;align-items:flex-start;gap:8px}
.search{display:flex;align-items:center;gap:10px;background:var(--p);border:1px solid var(--ln2);border-radius:8px;padding:0 14px;box-shadow:var(--shadow);color:var(--fn)}
.search:focus-within{border-color:var(--cy)}
.search input{flex:1;border:0;background:transparent;color:var(--tx);font:16px var(--sans);padding:13px 0;outline:none;min-width:0}
.search input::placeholder{color:var(--fn)}
kbd{font:500 12px var(--mono);border:1px solid var(--ln);border-radius:3px;padding:0 6px;color:var(--fn)}
.sec{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:4px 0 8px}
.hdr{font:600 14px var(--sans);color:var(--tx)}
.rows{background:var(--p);border:1px solid var(--ln);border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.wrow{display:flex;align-items:stretch;border-top:1px solid var(--ln)}.wrow:first-child{border-top:0}
.wrow>a{flex:1;display:flex;align-items:center;gap:12px;padding:10px 14px;color:var(--tx);min-width:0}
.wrow>a[href]:hover{background:var(--p2);text-decoration:none}
.rid{font:600 15px var(--mono);min-width:52px}.rname{flex:1;min-width:0;font-size:14.5px}.rsub{font-size:12.5px;color:var(--dm)}
.x{background:transparent;border:0;border-left:1px solid var(--ln);color:var(--cy);min-width:48px;font:500 20px var(--sans);cursor:pointer}
.x.on{color:var(--gn)}.x:hover{background:var(--p2)}
.btns{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 0}
.btn{display:inline-flex;align-items:center;background:var(--cy);color:var(--on);border:1px solid var(--cy);border-radius:6px;padding:8px 14px;font:500 14px var(--sans);cursor:pointer}
.btn:hover{text-decoration:none;opacity:.88}.btn:disabled{opacity:.5;cursor:default}
.btn.ghost{background:var(--p);color:var(--tx);border-color:var(--ln2)}
.cards{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
.ac{display:grid;gap:8px;align-content:start;padding:12px 14px;color:var(--tx)}
.ac:hover{text-decoration:none;border-color:var(--fn)}
.ac .h{display:flex;align-items:baseline;gap:10px;min-width:0}.ac .h b{font:600 17px var(--mono)}
.ac small{color:var(--dm);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ac .t{font-size:13.5px;color:var(--dm);border-top:1px solid var(--ln);padding-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.apt>summary{list-style:none;cursor:pointer}.apt>summary::-webkit-details-marker{display:none}
.apt{display:grid;gap:12px}
.apthead{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:12px 16px}
.apthead .rid{font-size:18px;min-width:0}.apthead .rname{color:var(--dm)}
.tier{display:grid;grid-template-columns:84px 1fr;align-items:start;gap:4px 12px;margin:12px 0}.tier .ann{justify-self:start;margin-top:1px}
.tier .eg{grid-column:2;font:12.5px var(--mono)}.eg-act{color:var(--am)}.eg-ifr{color:var(--cy)}.eg-fyi{color:var(--dm)}
.guide p{margin:10px 0}.guide .card{scroll-margin-top:16px}
.ggrid{display:grid;gap:14px;grid-template-columns:minmax(0,1fr)}
.feats{display:grid;gap:12px;grid-template-columns:minmax(0,1fr)}
.feats .card h3{margin:10px 0 2px;font:600 16px var(--sans)}
.shots{display:flex;gap:12px;overflow-x:auto;padding:4px 0}.shots img{height:440px;border-radius:18px;border:1px solid var(--ln)}
.welcome{padding:20px}.welcome h2{font:600 22px var(--sans);letter-spacing:-.4px;margin:0 0 8px}
.welcome p{margin:8px 0;color:var(--dm)}.welcome .tier{font-size:14px}
.welcome .wfoot{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.welcome .wfoot .btns{margin:0}
.ack{max-width:460px;width:calc(100% - 32px);padding:20px 22px;color:var(--tx);font-size:14.5px;line-height:1.5}
.ack::backdrop{background:rgba(9,18,28,.55)}.ack h2{margin:0 0 10px;font-size:19px}.ack p{margin:0 0 10px}
.ack .fine{font-size:12.5px;color:var(--fn)}.ack .fine a{color:var(--dm)}.ackb{display:flex;justify-content:flex-end;margin-top:14px}
.dots{display:flex;gap:6px}.dots i{width:8px;height:6px;border-radius:3px;background:var(--ln);transition:width .15s}
.dots i.on{width:22px;background:var(--tx)}
.sbh{font:600 11px var(--sans);color:var(--fn);margin:18px 8px 4px;text-transform:uppercase;letter-spacing:.07em}
.sbi{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:6px 8px;border-radius:6px;font-size:14px;color:var(--tx)}
a.sbi{color:var(--dm);transition:color .15s}a.sbi:hover{color:var(--tx);text-decoration:none}
.sbi.on,a.sbi.on{background:var(--p2);color:var(--tx);font-weight:500}
.sbi b{font:600 13px var(--mono)}.sbi.sub{color:var(--dm);font-size:13.5px}
.sbt{display:flex;align-items:center;gap:8px;width:100%;padding:6px 8px;border:0;border-radius:6px;background:none;color:var(--dm);font:14px var(--sans);text-align:left;cursor:pointer;transition:color .15s}
.sbt:hover,.sbl.cur>.sbt{color:var(--tx);text-decoration:none}.sbl.cur>.sbt{font-weight:500}
.sbl{position:relative}.sbl>.sbt{padding-right:30px}.sbf{display:flex;position:absolute;right:2px;top:3px;width:26px;height:26px;border:0;border-radius:5px;background:none;cursor:pointer;align-items:center;justify-content:center;opacity:0;transition:opacity .15s}
/* the arrow shows on an open list, the list whose page this is, and a list under the pointer or keyboard focus */
.sbl.open>.sbf,.sbl.on>.sbf,.sbl:hover>.sbf,.sbl:has(:focus-visible)>.sbf{opacity:1}@media (hover:none){.sbl.cur>.sbf{opacity:1}}
.sbf:hover{background:var(--p2)}.sbf:hover .chev{color:var(--tx)}.sbf[aria-expanded=true] .chev{transform:rotate(90deg)}.sbl.on>.sbt{background:var(--p2);color:var(--tx)}
.sbt .n{margin-left:auto;font:12px var(--mono);color:var(--fn)}.sbt .nw{margin-left:auto}.sbt .nw+.n{display:none}
.sbl.open .sbt .nw{display:none}.sbl.open .sbt .nw+.n{display:inline}
.sbp{position:relative;display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease}.sbl.open>.sbp{grid-template-rows:1fr}
.sbq{position:relative;min-height:0;overflow:hidden;scrollbar-width:none;margin-left:16px;border-left:1px solid var(--ln);opacity:0;transition:opacity .22s ease}
.sbl.open .sbq{opacity:1}.sbq::-webkit-scrollbar{display:none}
/* our own scrollbar over the list box: a thin thumb drawn over native scrolling, faint until you're over the list */
.sbbar{position:absolute;top:0;right:0;bottom:0;width:10px;opacity:0;transition:opacity .2s;touch-action:none}
.sbl:not(.open) .sbbar{display:none}.sbbar.can{opacity:.45}.sbl.open:hover .sbbar.can,.sbbar.can.go{opacity:1}
.sbbar b{position:absolute;right:2px;width:4px;border-radius:2px;background:var(--ln2);transition:width .15s,background .15s}
.sbbar:hover b,.sbbar.go b{width:6px;background:var(--fn)}
.sba{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-left:-1px;padding:4px 10px;border-left:2px solid transparent;font-size:13.5px;color:var(--dm);transition:color .15s,border-color .15s}
.sba b{font:500 13px var(--mono)}.sba:hover{color:var(--tx);text-decoration:none;border-left-color:var(--ln2)}
.sba.on{color:var(--tx);border-left-color:var(--tx)}
.sba.sub{color:var(--fn)}
.sb .search{margin:14px 0 0;border-radius:6px;padding:0 10px;box-shadow:none}.sb .search input{font-size:14px;padding:7px 0}
.sbfoot{margin-top:auto;padding:16px 8px 0;font-size:12.5px;color:var(--fn)}.sbfoot a{color:var(--dm)}
.doc{display:grid;gap:14px;max-width:780px}.doc .card,.ggrid .card{scroll-margin-top:64px}
.toc{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:14px;font-size:14px}
.prose code{font:13px var(--mono);background:var(--p2);border-radius:3px;padding:0 4px;overflow-wrap:anywhere}
.go{display:grid;gap:4px;align-content:start;color:var(--tx)}.go:hover{text-decoration:none;border-color:var(--fn)}.go .note{margin:0}
.prose p{margin:10px 0 0}.prose ul{margin:10px 0 0;padding-left:18px}.prose li{margin:6px 0}.prose li::marker{color:var(--fn)}
.pop>summary{list-style:none}.pop>summary::-webkit-details-marker{display:none}
.pop[open]>summary{border-color:var(--tx)}.pop>.menu{width:340px;padding:14px 16px}.pop .note{margin-top:0}
@media (max-width:639px){.pop[open]{flex-basis:100%;flex-wrap:wrap}.pop>.menu{position:static;width:100%;max-width:none;margin-top:8px;box-shadow:none}}
.alerts .btns{margin-top:10px}.alerts .more{margin-top:10px}
.steps{margin:10px 0 0;padding-left:20px;font-size:14px;color:var(--dm)}.steps li{margin:4px 0}.steps li::marker{color:var(--fn)}.alerts form{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.alerts input[type=email]{flex:1;min-width:0;border:1px solid var(--ln);border-radius:6px;background:var(--p);color:var(--tx);font:15px var(--sans);padding:7px 10px}
.alerts input[type=email]:focus{outline:none;border-color:var(--cy)}
@view-transition{navigation:auto}
.sb{view-transition-name:sb}.mtop{view-transition-name:mtop}
::view-transition-old(root),::view-transition-new(root){animation-duration:.16s}
@media (prefers-reduced-motion:reduce){*{transition:none!important}@view-transition{navigation:none}}
@media (max-width:359px){.nav{gap:12px;font-size:13.5px}}
@media (max-width:639px){.wrow>a{flex-wrap:wrap;row-gap:6px}.wrow>a .chips,.nxh .chips,.nxh .ltags{flex-basis:100%;margin-left:0;padding-left:64px}.nxh .ltags{order:1}}
@media (min-width:640px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.feats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){
 .app{grid-template-columns:248px minmax(0,1fr)}
 html{overscroll-behavior-y:none}
 .sb{display:flex;flex-direction:column;position:sticky;top:0;align-self:start;height:100vh;height:100dvh;overflow-y:auto;overscroll-behavior:contain;border-right:1px solid var(--ln);background:var(--p);padding:16px 12px}
 .sb .brand{padding:4px 8px 0}
 /* only the open list's box scrolls: the lists shrink to the room the sidebar has left, the box inside them first.
    --sbmin (set in SB.floor) keeps room for a few airports; below that the whole sidebar scrolls */
 #sbw{flex:0 1 auto;min-height:var(--sbmin,0px);display:flex;flex-direction:column}#sbw>*{flex:none}
 #sbw>.sbl.open{flex:0 1 auto;min-height:0;display:flex;flex-direction:column}.sbl.open>.sbt{flex:none}
 .sbl.open>.sbp{flex:0 1 auto;min-height:0}.sbl.open .sbq{overflow-y:auto;overscroll-behavior:contain}
 .mtop,.pfresh{display:none}
 .main{padding:32px 40px 56px}
 .main.two{grid-template-columns:minmax(0,1fr) 300px;column-gap:32px;align-items:start}
 .main.two>.full{grid-column:1/-1}.main.two>.foot.full{grid-column:1}
 .rail{position:sticky;top:24px}.rail .hist{display:block}
 .it{grid-template-columns:104px minmax(0,1fr) auto;align-items:baseline}
 .it .k{font-size:11.5px;color:var(--dm)}.it .m{justify-content:flex-end}
 .cards{grid-template-columns:repeat(3,minmax(0,1fr))}
 .ggrid{grid-template-columns:repeat(2,minmax(0,1fr))}.ggrid>.wide{grid-column:1/-1}
 .feats{grid-template-columns:repeat(3,minmax(0,1fr))}
 h1{font-size:40px}.hero{font-size:36px}
}
@media print{:root{--bg:#fff;--p:#fff;--p2:#F2F4F7;--ln:#D5DBE2;--ln2:#B8C2CE;--tx:#000;--dm:#444;--fn:#666;--am:#8E1560;
--amS:#F8E6F0;--cy:#15508F;--cyS:#E3EDF8;--gy:#444;--gyS:#EEF2F6;--gn:#2D7A4B;--gnS:#E4F2E9;--on:#fff;--shadow:none;
--mk:#fff;--mkl:#B8C2CE;--mko:#AAB5C3;--mks:#A3186E;--mkn:#000;color-scheme:light}
 .act{color:var(--am);background:none}.ann.new{color:var(--tx);background:none}
 .sb,.mtop,.rail,.seg,.btns,.search,#res,#welcome,#ack,#newnote,#next .nxm,.manage,.nf,.menu,.addto,#lnote,.foot .lnk{display:none!important}
 .app{display:block}.main{display:block;padding:0;max-width:none}.main>*,.col>*{margin-bottom:12px}
 body{font-size:12.5px}a{color:inherit}.it,.apthead,.nx{break-inside:avoid}.it.new{box-shadow:none}}