:root{--paper:#F4F6F9;--surface:#FFFFFF;--ink:#13161B;--ink-2:#5B6472;--ink-3:#8A93A1;--line:#DCE1E9;--line-2:#C3CBD6;--blue:#1B49D8;--blue-soft:#EAEFFC;--signal:#FF5A1F;--signal-soft:#FFF0E9;--r:10px;--maxw:1200px;--f-disp:"IBM Plex Sans",system-ui,-apple-system,sans-serif;--f-body:"IBM Plex Sans",system-ui,-apple-system,sans-serif;--f-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,monospace}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}img,svg{max-width:100%}a{color:inherit;text-decoration:none}button,input,select{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:200;background:#fff;padding:10px 16px;border-radius:6px}h1,h2,h3{font-family:var(--f-disp);font-weight:700;letter-spacing:-.01em;margin:0}h2{font-size:clamp(24px,3.4vw,34px);line-height:1.15}h3{font-size:19px;line-height:1.25}.eyebrow{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 14px}.hdr{position:sticky;top:0;z-index:60;background:var(--ink);color:#fff;border-bottom:1px solid #262b34}.hdr-in{display:flex;align-items:center;gap:8px;height:60px;max-width:var(--maxw);margin:0 auto;padding:0 20px}.logo{font-family:var(--f-disp);font-weight:700;font-size:19px;display:flex;align-items:center;gap:9px;white-space:nowrap}.logo-mark{width:24px;height:24px;border:2px solid var(--signal);border-radius:3px;display:grid;place-items:center;font-family:var(--f-mono);font-size:11px;font-weight:600;color:var(--signal);flex:none}.nav{display:flex;align-items:center;gap:2px;margin-left:18px}.nav-btn{background:none;border:0;padding:9px 12px;border-radius:7px;cursor:pointer;font-size:14.5px;font-weight:500;color:#c9cfd9;display:flex;align-items:center;gap:6px}.nav-btn:hover{background:#20262f;color:#fff}.hdr-search{margin-left:auto;display:flex;align-items:center;gap:8px;background:#20262f;border:1px solid #2e3541;border-radius:8px;padding:0 11px;height:38px;width:250px}.hdr-search input{background:none;border:0;outline:0;width:100%;font-size:14px;color:#fff}.hdr-search input::placeholder{color:#727b89}.fav-btn{background:none;border:1px solid #2e3541;border-radius:8px;height:38px;padding:0 12px;cursor:pointer;color:#c9cfd9;font-size:14px;display:flex;align-items:center;gap:7px}.fav-btn:hover{border-color:var(--signal);color:#fff}.burger{display:none;background:none;border:0;padding:8px;cursor:pointer;color:#fff}.mega{position:absolute;left:0;right:0;top:60px;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 18px 40px #13161b21;padding:26px 0 30px;display:none}.mega.open{display:block}.mega-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px 26px;max-width:var(--maxw);margin:0 auto;padding:0 20px}.mega-col h4{font-family:var(--f-disp);font-size:14px;font-weight:700;margin:0 0 9px;display:flex;align-items:baseline;gap:7px;padding-bottom:8px;border-bottom:1px solid var(--line)}.mega-col h4 .n{font-family:var(--f-mono);font-size:11px;color:var(--signal);font-weight:500}.mega-col a{display:block;font-size:13.5px;color:var(--ink-2);padding:3.5px 0;line-height:1.35}.mega-col a:hover{color:var(--blue)}.mega-col a.soon{color:var(--ink-3);cursor:default;pointer-events:none}.mega-col .all{color:var(--blue);font-weight:500;margin-top:5px;font-size:13px}.mmenu{display:none;background:var(--surface);border-bottom:1px solid var(--line);padding:8px 0 18px}.mmenu.open{display:block}.mmenu details{border-bottom:1px solid var(--line)}.mmenu summary{list-style:none;cursor:pointer;padding:13px 0;display:flex;justify-content:space-between;align-items:center;font-family:var(--f-disp);font-weight:700;font-size:16px}.mmenu summary::-webkit-details-marker{display:none}.mmenu summary .n{font-family:var(--f-mono);font-size:11px;color:var(--ink-3);font-weight:400}.mmenu details a{display:block;padding:9px 0 9px 14px;font-size:14.5px;color:var(--ink-2);border-top:1px solid var(--line)}.hero{padding:40px 0 38px;border-bottom:1px solid var(--line)}.hero h1{font-size:clamp(27px,3.6vw,42px);line-height:1.06;letter-spacing:-.02em;max-width:19ch}.hero-sub{color:var(--ink-2);font-size:15.5px;max-width:56ch;margin:12px 0 0}.hero-sub b{color:var(--ink);font-weight:600}.dimline{margin:16px 0 20px;max-width:470px;color:var(--line-2)}.dimline .cap{fill:var(--signal);font-family:var(--f-mono);font-size:15px;font-weight:600}.dimline .lbl{fill:var(--ink-3);font-family:var(--f-mono);font-size:9.5px;letter-spacing:.1em}.searchbox{position:relative;max-width:620px}.searchbox input{width:100%;height:56px;border:2px solid var(--ink);border-radius:var(--r);background:var(--surface);padding:0 18px 0 50px;font-size:17px;outline:0}.searchbox input:focus{border-color:var(--blue);box-shadow:0 0 0 4px var(--blue-soft)}.searchbox .ico{position:absolute;left:17px;top:17px;color:var(--ink-3)}.sresults{position:absolute;top:62px;left:0;right:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 16px 34px #13161b24;max-height:340px;overflow-y:auto;z-index:40;display:none}.sresults.open{display:block}.sresults a{display:flex;justify-content:space-between;gap:12px;padding:11px 16px;border-bottom:1px solid var(--line);align-items:center}.sresults a:last-child{border-bottom:0}.sresults a:hover{background:var(--blue-soft)}.sresults .cat{font-family:var(--f-mono);font-size:11px;color:var(--ink-3);white-space:nowrap}.sresults .empty{padding:16px;color:var(--ink-3);font-size:14px}.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;align-items:center}.chips .lb{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-right:4px}.chip{background:var(--surface);border:1px solid var(--line);border-radius:100px;padding:7px 14px;font-size:14px;cursor:pointer;display:inline-block}.chip:hover{border-color:var(--ink);background:var(--ink);color:#fff}.chip.chip-cat{border-style:dashed;color:var(--ink-2)}.chip.chip-cat:hover{border-style:solid;background:var(--blue);border-color:var(--blue);color:#fff}.sec{padding:52px 0;border-bottom:1px solid var(--line)}.sec-hd{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:26px;flex-wrap:wrap}.sec-hd p{margin:6px 0 0;color:var(--ink-2);font-size:15px}.link-more{color:var(--blue);font-weight:500;font-size:15px;white-space:nowrap}.link-more:hover{text-decoration:underline}.cats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.cat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 16px 16px;display:block;transition:border-color .14s,transform .14s}.cat-card:hover{border-color:var(--ink);transform:translateY(-2px)}.cat-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.cat-ico{color:var(--blue)}.cat-n{font-family:var(--f-mono);font-size:12px;color:var(--signal);font-weight:600}.cat-card h3{font-size:16.5px;margin-bottom:5px}.cat-card p{margin:0;font-size:12.5px;color:var(--ink-3);line-height:1.4}.pop{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.pop-card{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--line-2);border-radius:0 var(--r) var(--r) 0;padding:15px 16px;transition:border-left-color .14s,box-shadow .14s;display:block}.pop-card:hover{border-left-color:var(--signal);box-shadow:0 6px 18px #13161b12}.pop-card .t{font-family:var(--f-disp);font-weight:700;font-size:16px;line-height:1.2;display:block;margin-bottom:5px}.pop-card .d{font-size:12.5px;color:var(--ink-2);line-height:1.4;display:block}.pop-card .c{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);display:block;margin-top:9px}.pop-card.soon{opacity:.55;pointer-events:none}.trust{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:hidden}.trust>div{padding:22px 20px;border-right:1px solid var(--line)}.trust>div:last-child{border-right:0}.trust .num{font-family:var(--f-mono);font-size:11px;color:var(--signal);letter-spacing:.1em;margin-bottom:10px}.trust h3{font-size:16px;margin-bottom:6px}.trust p{margin:0;font-size:13.5px;color:var(--ink-2);line-height:1.45}.colgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 40px}.colblock{border-top:2px solid var(--ink);padding-top:12px}.colblock summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:baseline;gap:10px}.colblock summary::-webkit-details-marker{display:none}.colblock summary h3{font-size:17px}.colblock summary .n{font-family:var(--f-mono);font-size:12px;color:var(--ink-3)}.colblock ul{list-style:none;margin:10px 0 18px;padding:0}.colblock li{border-bottom:1px solid var(--line)}.colblock li a{display:block;padding:8px 0;font-size:14.5px;color:var(--ink-2)}.colblock li a:hover{color:var(--blue)}.colblock .all{display:inline-block;margin-top:10px;color:var(--blue);font-weight:500;font-size:14px}.prose{max-width:74ch}.prose p{color:var(--ink-2);font-size:15.5px}.faq{margin-top:26px;max-width:74ch}.faq h3{font-size:17px;margin-bottom:6px}.faq p{margin:0 0 20px;color:var(--ink-2);font-size:15px}.ftr{background:var(--ink);color:#a8b0bc;padding:46px 0 26px;font-size:14px}.ftr-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr 1fr;gap:30px}.ftr h4{font-family:var(--f-disp);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#fff;margin:0 0 14px;font-weight:600}.ftr a{display:block;padding:4px 0;color:#a8b0bc}.ftr a:hover{color:#fff}.ftr .n{font-family:var(--f-mono);font-size:11px;color:#5c6573;margin-left:5px}.ftr-legal{margin-top:32px;padding-top:20px;border-top:1px solid #262b34;display:grid;grid-template-columns:1.6fr 1fr;gap:26px}.ftr-legal p{margin:0 0 9px;font-size:12.5px;line-height:1.55;color:#727b89}.ftr-legal p:last-child{margin-bottom:0}.ftr-legal a{display:inline;color:#a8b0bc;text-decoration:underline;text-underline-offset:2px;padding:0}.ftr-legal a:hover{color:#fff}.ftr-legal b{color:#c9cfd9;font-weight:500}.req{font-family:var(--f-mono);font-size:12px;line-height:1.7;color:#8a93a1}.req b{color:#c9cfd9;font-weight:500}.ftr-bot{margin-top:24px;padding-top:18px;border-top:1px solid #262b34;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#727b89}.ftr-bot .upd{font-family:var(--f-mono);font-size:12px}.cookie{position:fixed;left:16px;right:16px;bottom:16px;z-index:80;max-width:760px;margin:0 auto;background:var(--surface);border:1px solid var(--line-2);border-left:3px solid var(--signal);border-radius:0 var(--r) var(--r) 0;box-shadow:0 14px 40px #13161b33;padding:16px 18px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}.cookie[hidden]{display:none}.cookie p{margin:0;flex:1 1 340px;font-size:13.5px;line-height:1.5;color:var(--ink-2)}.cookie p b{color:var(--ink);font-weight:600}.cookie a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}.cookie-acts{display:flex;gap:8px;flex-wrap:wrap}.crumbs{font-size:13px;color:var(--ink-3);padding:18px 0;display:flex;gap:8px;flex-wrap:wrap}.crumbs a{color:var(--ink-2)}.crumbs a:hover{color:var(--blue)}.calc-head{padding-bottom:26px}.calc-head h1{font-size:clamp(28px,4.4vw,42px);line-height:1.08;max-width:20ch}.calc-head .lead{margin:14px 0 0;color:var(--ink-2);font-size:16.5px;max-width:66ch}.calc-shell{display:grid;grid-template-columns:1fr 1.05fr;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface);margin-bottom:14px}.calc-inputs{padding:24px;border-right:1px solid var(--line)}.calc-view{padding:24px;background:#fafbfd}.grp{margin-bottom:20px}.grp-t{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);padding-bottom:7px;border-bottom:1px solid var(--line);margin-bottom:13px}.fields{display:flex;flex-wrap:wrap;gap:12px}.field{flex:1 1 150px;min-width:0}.field label{display:flex;align-items:baseline;gap:6px;font-size:13.5px;color:var(--ink-2);margin-bottom:5px}.field .tag{font-family:var(--f-mono);font-size:11px;font-weight:600;color:var(--blue);background:var(--blue-soft);border-radius:3px;padding:1px 5px}.field .in{display:flex;align-items:center;gap:8px}.field input,.field select{width:100%;max-width:220px;height:42px;border:1px solid var(--line-2);border-radius:7px;background:var(--surface);padding:0 11px;font-family:var(--f-mono);font-size:15px;outline:0}.field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.field .unit{font-family:var(--f-mono);font-size:12px;color:var(--ink-3);flex:none}.hint{font-size:12px;color:var(--ink-3);margin-top:5px;line-height:1.4}.scheme{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:14px}.scheme svg{display:block;width:100%;height:auto}.dim{stroke:var(--line-2);stroke-width:1}.dimtext{font-family:var(--f-mono);font-size:11px;fill:var(--ink-3)}.dimgrp{transition:opacity .15s}.dimgrp.hot .dim{stroke:var(--signal);stroke-width:1.6}.dimgrp.hot .dimtext{fill:var(--signal);font-weight:600}.scheme-cap{font-size:12px;color:var(--ink-3);margin:10px 0 0;text-align:center}.results{margin-top:16px;border:1px solid var(--line);border-radius:8px;background:var(--surface);overflow:hidden}.res-hd{padding:10px 14px;border-bottom:1px solid var(--line);background:var(--ink);color:#fff;font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;display:flex;justify-content:space-between}.res-row{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:10px 14px;border-bottom:1px solid var(--line)}.res-row:last-child{border-bottom:0}.res-row .k{font-size:14px;color:var(--ink-2)}.res-row .v{font-family:var(--f-mono);font-size:16px;font-weight:600;white-space:nowrap}.res-row.key{background:var(--signal-soft)}.res-row.key .v{color:var(--signal);font-size:19px}.res-actions{display:flex;gap:8px;padding:12px 14px;border-top:1px solid var(--line);flex-wrap:wrap}.btn{border:1px solid var(--line-2);background:var(--surface);border-radius:7px;padding:9px 14px;font-size:13.5px;cursor:pointer;display:flex;align-items:center;gap:7px}.btn:hover{border-color:var(--ink)}.btn-p{background:var(--ink);color:#fff;border-color:var(--ink)}.btn-p:hover{background:#000}.note{display:flex;gap:11px;padding:13px 15px;border:1px solid var(--line);border-left:3px solid var(--signal);border-radius:0 8px 8px 0;background:var(--surface);font-size:13.5px;color:var(--ink-2);margin-bottom:40px}.note svg{flex:none;color:var(--signal);margin-top:1px}.block{padding:34px 0;border-top:1px solid var(--line)}.block h2{margin-bottom:16px}.formula{font-family:var(--f-mono);font-size:15px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:0 8px 8px 0;padding:14px 16px;margin:14px 0;overflow-x:auto}.formula .c{color:var(--ink-3);font-size:13px;display:block;margin-top:7px}.example{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;margin-bottom:14px}.example h3{font-size:16px;margin-bottom:10px}.steps{list-style:none;margin:0;padding:0;counter-reset:s}.steps li{counter-increment:s;padding:7px 0 7px 30px;position:relative;font-size:14.5px;color:var(--ink-2);border-bottom:1px dashed var(--line)}.steps li:last-child{border-bottom:0}.steps li:before{content:counter(s);position:absolute;left:0;top:8px;font-family:var(--f-mono);font-size:11px;color:var(--signal);border:1px solid var(--signal);border-radius:3px;width:19px;height:19px;display:grid;place-items:center}.steps li b{color:var(--ink);font-family:var(--f-mono);font-weight:600}.related{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.tbl{width:100%;border-collapse:collapse;font-size:14px;background:var(--surface)}.tbl th,.tbl td{border:1px solid var(--line);padding:9px 12px;text-align:left}.tbl th{background:#eef1f6;font-weight:600;font-size:13px}.tbl td.n{font-family:var(--f-mono)}.tbl-scroll{overflow-x:auto;border-radius:8px;margin-bottom:24px;margin-top:16px}.block h3{margin-top:28px}.hub-hd{padding:34px 0 30px;border-bottom:1px solid var(--line)}.hub-hd h1{font-size:clamp(30px,4.6vw,44px);line-height:1.06}.hub-hd .lead{margin:14px 0 0;color:var(--ink-2);font-size:16.5px;max-width:68ch}.subgroup{padding:34px 0;border-bottom:1px solid var(--line)}.subgroup h2{font-size:22px;margin-bottom:4px}.subgroup .sub-n{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:18px}@media(max-width:1320px){.layout.has-rail{grid-template-columns:238px minmax(0,1fr);max-width:1360px;gap:34px}.rail{display:none}}@media(max-width:1080px){.layout,.layout.has-rail{grid-template-columns:1fr;gap:0;max-width:var(--maxw)}.sidebar{display:none}.has-sidebar .wrap{max-width:none;padding:0}}@media(max-width:1000px){.cats{grid-template-columns:repeat(3,1fr)}.pop,.related,.trust{grid-template-columns:repeat(2,1fr)}.trust>div:nth-child(2){border-right:0}.trust>div:nth-child(-n+2){border-bottom:1px solid var(--line)}.ftr-grid{grid-template-columns:repeat(2,1fr)}.ftr-legal,.calc-shell{grid-template-columns:1fr}.calc-inputs{border-right:0;border-bottom:1px solid var(--line)}}@media(max-width:720px){html,body{overflow-x:hidden;max-width:100vw}.layout,.content,.page-content,.wrap{min-width:0;max-width:100%}.wrap{padding:0}.calc-shell,.calc-inputs,.calc-view,.results,.scheme,.grp,.fields{min-width:0;max-width:100%}.scheme{padding:10px}.scheme svg{width:100%;height:auto}.res-row{flex-wrap:wrap;gap:4px}.res-row .v{font-size:15px}.res-actions .btn{flex:1 1 auto;justify-content:center}.dimline{max-width:100%;height:auto}.chips .lb{width:100%;margin-bottom:4px}.chip{font-size:13.5px;padding:6px 12px}.note{margin-left:0;margin-right:0}.example,.formula{max-width:100%;overflow-x:auto}.steps li{padding-left:26px}.nav,.hdr-search,.fav-btn,.mega{display:none!important}.burger{display:block;margin-left:auto}.hdr-in{height:56px}.hero{padding:36px 0 34px}.cats{grid-template-columns:repeat(2,1fr)}.pop,.related,.colgrid{grid-template-columns:1fr}.sec{padding:38px 0}.searchbox input{height:54px;font-size:16px}.field{flex:1 1 100%}.field input,.field select{max-width:100%}.ftr-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:34px;max-width:1360px;margin:0 auto;padding:0 20px;align-items:start}.layout.has-rail{grid-template-columns:238px minmax(0,1fr) 250px;gap:30px;max-width:1560px}.has-sidebar .wrap{max-width:none;padding:0}.sidebar{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 96px);overflow-y:auto;overscroll-behavior:contain;padding:16px 0 24px;scrollbar-width:thin}.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:3px}.sb-search{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line-2);border-radius:8px;padding:0 10px;height:38px;color:var(--ink-3);margin-bottom:16px}.sb-search:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.sb-search input{background:none;border:0;outline:0;width:100%;font-size:13.5px;color:var(--ink);min-width:0}.sb-head{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);padding-bottom:8px;border-bottom:2px solid var(--ink);margin-bottom:4px}.sb-total{color:var(--signal);font-weight:600}.sb-cat{border-bottom:1px solid var(--line)}.sb-cat[hidden]{display:none}.sb-cat summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:9px;padding:10px 2px;font-size:14px;font-weight:500;color:var(--ink);min-height:40px}.sb-cat summary::-webkit-details-marker{display:none}.sb-cat summary:hover{color:var(--blue)}.sb-cat summary svg{color:var(--ink-3);flex:none}.sb-cat[open] summary{color:var(--blue)}.sb-cat[open] summary svg{color:var(--blue)}.sb-name{flex:1;min-width:0}.sb-n{font-family:var(--f-mono);font-size:11px;color:var(--ink-3);flex:none}.sb-cat ul{list-style:none;margin:0 0 10px;padding:0 0 0 24px;border-left:1px solid var(--line)}.sb-cat li[hidden]{display:none}.sb-cat ul a,.sb-cat ul .sb-soon{display:block;padding:6px 0;font-size:13px;line-height:1.35;color:var(--ink-2)}.sb-cat ul a:hover{color:var(--blue)}.sb-cat ul .sb-soon{color:var(--ink-3);cursor:default}.sb-cat ul a.sb-current{color:var(--signal);font-weight:600;box-shadow:-25px 0 0 -23px var(--signal)}.sb-all{color:var(--blue)!important;font-weight:500;font-size:12.5px!important}.sb-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.sb-foot a{display:block;padding:5px 0;font-size:13px;color:var(--blue)}.sb-foot a:hover{text-decoration:underline}.rail{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 96px);overflow-y:auto;overscroll-behavior:contain;padding:16px 0 24px;scrollbar-width:thin}.rail::-webkit-scrollbar{width:6px}.rail::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:3px}.minicalc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}.mc-head{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);padding:10px 12px 8px;border-bottom:1px solid var(--line)}.mc-screen{width:100%;border:0;border-bottom:1px solid var(--line);outline:0;font-family:var(--f-mono);font-size:22px;font-weight:600;text-align:right;padding:12px;background:#fafbfd;color:var(--ink);font-variant-numeric:tabular-nums}.mc-screen:focus{background:var(--blue-soft)}.mc-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);padding:1px}.mc-k{background:var(--surface);border:0;padding:0;height:42px;cursor:pointer;font-family:var(--f-mono);font-size:15px;color:var(--ink);display:grid;place-items:center;transition:background .1s}.mc-k:hover{background:#eef1f6}.mc-k:active{background:var(--blue-soft)}.mc-fn{color:var(--ink-3);font-size:14px}.mc-op{color:var(--blue);font-size:17px;font-weight:600}.mc-del{color:var(--ink-3);font-size:14px}.mc-eq{background:var(--ink);color:#fff;font-weight:600}.mc-eq:hover{background:#000}.rail-posts{margin-top:22px}.rail-head{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);padding-bottom:8px;border-bottom:2px solid var(--ink);margin-bottom:10px}.rail-head a{color:var(--blue)}.rail-post{display:block;border-bottom:1px solid var(--line);border-left:2px solid transparent;padding:12px 0;transition:border-left-color .14s,padding-left .14s}.rail-post:hover{border-left-color:var(--signal);padding-left:9px}.rp-title{display:block;font-family:var(--f-disp);font-weight:700;font-size:14px;line-height:1.25;margin-bottom:5px}.rail-post:hover .rp-title{color:var(--blue)}.rp-ex{display:block;font-size:12.5px;line-height:1.45;color:var(--ink-2)}.rp-meta{display:block;margin-top:7px;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em;color:var(--ink-3)}@media(max-width:1320px){.layout.has-rail{grid-template-columns:248px minmax(0,1fr);max-width:1360px;gap:34px}.rail{display:none}}@media(max-width:1080px){.layout,.layout.has-rail{grid-template-columns:1fr;gap:0;max-width:var(--maxw);padding:0 20px}.sidebar{display:none}.has-sidebar .wrap{max-width:none;padding:0}}@media(max-width:720px){html,body{overflow-x:hidden;max-width:100vw}.layout,.layout.has-rail{padding:0 16px}.content,.page-content,.wrap,.has-sidebar .wrap,.calc-shell,.calc-inputs,.calc-view,.results,.scheme,.grp,.fields{min-width:0;max-width:100%}.calc-shell{grid-template-columns:1fr}.calc-inputs{border-right:0;border-bottom:1px solid var(--line);padding:18px}.calc-view{padding:18px}.scheme{padding:10px}.scheme svg{width:100%;height:auto}.res-row{flex-wrap:wrap;gap:2px}.res-row .v{font-size:15px}.res-actions{padding:12px}.res-actions .btn{flex:1 1 auto;justify-content:center}.dimline{max-width:100%;height:auto}.chips .lb{width:100%;margin-bottom:4px}.chip{font-size:13.5px;padding:6px 12px}.note{margin-left:0;margin-right:0}.example,.formula{max-width:100%;overflow-x:auto}.example{padding:16px}.steps li{padding-left:26px}.cookie{left:10px;right:10px;bottom:10px;padding:14px}}.sidebar .rail-posts{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}.rail-ad{margin-top:18px;position:sticky;top:76px}.ftr-grid-3{grid-template-columns:1.4fr 1fr 1fr}@media(max-width:1000px){.ftr-grid-3{grid-template-columns:1fr 1fr}}@media(max-width:720px){.ftr{padding-left:16px;padding-right:16px}.ftr .wrap{padding:0}.ftr-grid-3{grid-template-columns:1fr;gap:24px}.ftr-legal{grid-template-columns:1fr;gap:18px}}.hdr-search{position:relative}.hdr-results{position:absolute;top:44px;left:0;width:340px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 16px 34px #13161b2e;max-height:360px;overflow-y:auto;z-index:70;display:none}.hdr-results.open{display:block}.hdr-results a,.hdr-results .hr-soon{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:10px 14px;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink)}.hdr-results a:last-child,.hdr-results .hr-soon:last-child{border-bottom:0}.hdr-results a:hover{background:var(--blue-soft);color:var(--blue)}.hdr-results .hr-soon{color:var(--ink-3);cursor:default}.hr-cat{font-family:var(--f-mono);font-size:11px;color:var(--ink-3);white-space:nowrap}.hr-empty{padding:16px 14px;font-size:13.5px;color:var(--ink-3)}.ftr-cats{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.ftr-grid-3{grid-template-columns:1.9fr 1.1fr 1.1fr;gap:36px}@media(max-width:1000px){.ftr-grid-3{grid-template-columns:1fr 1fr;gap:28px}}@media(max-width:720px){.ftr-grid-3{grid-template-columns:1fr;gap:24px}.ftr-cats{grid-template-columns:1fr 1fr;gap:0 14px}}@media(max-width:720px){.mmenu{padding-left:16px;padding-right:16px}.mmenu .wrap{padding:0;max-width:100%}.mmenu summary{font-size:16px;padding:14px 0}.mmenu details a{font-size:14.5px;padding:10px 0 10px 12px}}.rail{align-self:stretch}.rail-ad{margin-top:20px;position:sticky;top:76px}.rail-ad:empty{display:none}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-cyrillic-400-normal.DZqxrq2p.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-400-normal.BTotfTJu.woff) format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:500;src:url(/_astro/ibm-plex-sans-cyrillic-500-normal.CocWQlwt.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-500-normal.ByOcLdNv.woff) format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-cyrillic-600-normal.71GNu3SW.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-600-normal.BGq0mW3O.woff) format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-cyrillic-700-normal.D_uavGvn.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-700-normal.RFb1v-CK.woff) format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-latin-400-normal.CDDApCn2.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-400-normal.CYLoc0-x.woff) format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:500;src:url(/_astro/ibm-plex-sans-latin-500-normal.6ng42L7E.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-500-normal.BgVn5rGT.woff) format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-latin-600-normal.CuJfVYMP.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-600-normal.Cu4Hd6ag.woff) format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-latin-700-normal.Bxkt5Cjx.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-700-normal.Bth3BMcD.woff) format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-mono-cyrillic-400-normal.BSMlKf0J.woff2) format("woff2"),url(/_astro/ibm-plex-mono-cyrillic-400-normal.CEL4l2ZJ.woff) format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/_astro/ibm-plex-mono-cyrillic-500-normal.Bq9vWWag.woff2) format("woff2"),url(/_astro/ibm-plex-mono-cyrillic-500-normal.Ael50iVv.woff) format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-mono-cyrillic-600-normal.CTOM6hUh.woff2) format("woff2"),url(/_astro/ibm-plex-mono-cyrillic-600-normal.fLZuRloM.woff) format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-mono-latin-400-normal.DMJ8VG8y.woff2) format("woff2"),url(/_astro/ibm-plex-mono-latin-400-normal.CvHOgSBP.woff) format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/_astro/ibm-plex-mono-latin-500-normal.DSY6xOcd.woff2) format("woff2"),url(/_astro/ibm-plex-mono-latin-500-normal.CB9ihrfo.woff) format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-mono-latin-600-normal.BgSNZQsw.woff2) format("woff2"),url(/_astro/ibm-plex-mono-latin-600-normal.DWFSQ4vo.woff) format("woff")}
