.bt{--ink:#e7e6e2;--steel:#9a9fa3;--faint:#9a9fa3c4;--bright:#f4f3ef;--line:#ffffff1f;--pad:clamp(22px,4.2vw,80px);--cols:minmax(0,3fr) minmax(0,9fr);--gap:clamp(20px,3vw,56px);color:var(--ink);padding:clamp(112px,19svh,190px) var(--pad) clamp(72px,12svh,140px);background:#030304;overflow-x:clip}.bt-cap{letter-spacing:.08em;text-transform:uppercase;margin:0;font:400 10px/1.6 IBM Plex Mono,monospace}.bt code{letter-spacing:0;color:var(--bright);overflow-wrap:anywhere;font:400 .84em/1.2 IBM Plex Mono,monospace}.bt :focus-visible{outline:1px solid var(--bright);outline-offset:4px}.bt-head{grid-template-columns:var(--cols);gap:0 var(--gap);display:grid}.bt-head-cap{border-bottom:1px solid var(--line);color:var(--steel);grid-column:1/-1;justify-content:space-between;gap:20px;padding-bottom:clamp(14px,2svh,22px);display:flex}.bt-head-cap span+span{color:var(--faint);text-align:right}.bt-title{letter-spacing:-.062em;color:var(--bright);grid-column:1/-1;margin:clamp(26px,4.5svh,52px) 0 0 -.045em;font:650 clamp(50px,9.4vw,172px)/.84 DM Sans,Arial,sans-serif}.bt-title span{display:block}.bt-lead{letter-spacing:-.025em;max-width:30ch;color:var(--bright);text-wrap:pretty;grid-column:2;margin:clamp(28px,5svh,56px) 0 0;font:500 clamp(21px,2.15vw,38px)/1.2 DM Sans,Arial,sans-serif}.bt-sec{grid-template-columns:var(--cols);gap:18px var(--gap);border-top:1px solid var(--line);margin-top:clamp(64px,11svh,132px);padding-top:clamp(18px,2.6svh,28px);display:grid}.bt-label{color:var(--steel)}.bt-body{grid-column:2;min-width:0;margin:0;padding:0}.bt-sec-history{display:block}.bt-text{color:#cfd0cc;text-wrap:pretty;max-width:62ch;margin:0;font-size:clamp(16px,1.15vw,18px);line-height:1.55}.bt-text+*{margin-top:clamp(28px,4svh,44px)}.bt-text a,.bt-note a,.bt-table a{color:var(--bright);text-underline-offset:.22em;-webkit-text-decoration:underline #9a9fa38c;text-decoration:underline #9a9fa38c;text-decoration-thickness:1px;transition:text-decoration-color .3s}.bt-text a:hover,.bt-note a:hover,.bt-table a:hover{-webkit-text-decoration-color:var(--bright);text-decoration-color:var(--bright)}.bt-sub{color:var(--steel);margin:clamp(44px,6svh,64px) 0 16px;font-weight:400}.bt-hist{--tick:3px;--colgap:clamp(2px,.42vw,7px);margin-top:clamp(20px,3svh,32px)}.bt-read{min-height:3.4em;color:var(--steel);flex-wrap:wrap;align-items:baseline;gap:2px 22px;margin-bottom:12px;display:flex}.bt-read-day{color:var(--bright)}.bt-read-top{color:var(--faint)}.bt-hint b{font-weight:400}.bt-hint-touch{display:none}@media (hover:none){.bt-hint-fine{display:none}.bt-hint-touch{display:inline}}.bt-strip{grid-template-columns:repeat(var(--days),minmax(0,1fr));gap:0 var(--colgap);touch-action:pan-y;-webkit-user-select:none;user-select:none;display:grid;position:relative}.bt-strip:after{content:"";left:0;right:0;top:calc(var(--max-n) * var(--tick));pointer-events:none;background:#ffffff42;height:1px;position:absolute}.bt-col{grid-template-rows:calc(var(--max-n) * var(--tick)) calc(var(--max-m) * var(--tick) + 2px);min-width:0;color:inherit;cursor:pointer;background:0 0;border:0;margin:0;padding:0;display:grid;position:relative}.bt-col:before{content:"";inset:-8px calc(var(--colgap) / -2);opacity:0;background:#ffffff0d;border-radius:2px;transition:opacity .2s;position:absolute}.bt-col[data-on]:before{opacity:1}.bt-col:focus-visible{outline:none}.bt-col:focus-visible:before{opacity:1;outline:1px solid var(--bright)}.bt-up{flex-direction:column-reverse;display:flex}.bt-down{flex-direction:column;padding-top:2px;display:flex}.bt-up i,.bt-down i{--tc:var(--ink);transform-origin:50% 100%;animation:bt-rise 1s cubic-bezier(.2,.7,.2,1) calc(.26s + var(--i) * 16ms) backwards;flex:none;display:block}.bt-up .bt-c{height:calc(var(--c) * var(--tick));background:repeating-linear-gradient(to top, var(--tc) 0 calc(var(--tick) - 1px), transparent 0 var(--tick))}.bt-up .bt-o{--tc:#9a9fa39e;height:calc(var(--o) * var(--tick));background:repeating-linear-gradient(to top, var(--tc) 0 calc(var(--tick) - 1px), transparent 0 var(--tick))}.bt-down i{--tc:#9a9fa373;height:calc(var(--m) * var(--tick));transform-origin:50% 0;background:repeating-linear-gradient(to bottom, var(--tc) 0 calc(var(--tick) - 1px), transparent 0 var(--tick))}.bt-col[data-on] .bt-up .bt-c{--tc:#fff}.bt-col[data-on] .bt-up .bt-o{--tc:var(--steel)}.bt-col[data-on] .bt-down i{--tc:#9a9fa3c4}@keyframes bt-rise{0%{transform:scaleY(0)}}html[data-motion=still] .bt-up i,html[data-motion=still] .bt-down i{animation:none}.bt-axis{grid-template-columns:repeat(var(--days),minmax(0,1fr));gap:0 var(--colgap);height:40px;margin:10px 0 0;padding:0;list-style:none;display:grid;position:relative}.bt-axis li{min-width:0;position:relative}.bt-axis-date{white-space:nowrap;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);border-left:1px solid #ffffff38;padding-left:5px;font:400 10px/1.3 IBM Plex Mono,monospace;position:absolute;top:0;left:0}.bt-axis-mark{color:var(--steel);font:500 10px/1.3 IBM Plex Mono,monospace;transition:color .2s;position:absolute;top:20px;left:50%;transform:translate(-50%)}.bt-axis-mark[data-on]{color:var(--bright)}.bt-marks{gap:0 var(--gap);grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr));margin:clamp(14px,2.4svh,24px) 0 0;padding:0;list-style:none;display:grid}.bt-marks li{border-top:1px solid var(--line);color:#cfd0cc;grid-template-columns:1.6em 4.6em 1fr;align-items:baseline;padding:9px 0;font-size:14px;line-height:1.4;transition:color .2s;display:grid}.bt-marks li[data-on]{color:var(--bright)}.bt-marks-n{color:var(--steel);font-weight:500}.bt-marks-d{color:var(--faint)}.bt-stats{border-top:1px solid var(--line);grid-template-columns:repeat(4,minmax(0,1fr));margin:clamp(40px,6svh,64px) 0 0;display:grid}.bt-stats>div{min-width:0;padding:18px clamp(14px,1.6vw,26px) 4px 0}.bt-stats>div+div{border-left:1px solid var(--line);padding-left:clamp(14px,1.6vw,26px)}.bt-stats dt{color:var(--steel)}.bt-stats dd{margin:0}.bt-num{letter-spacing:-.035em;color:var(--bright);font-variant-numeric:tabular-nums;font:500 clamp(34px,3.6vw,64px)/1 DM Sans,Arial,sans-serif;margin-top:14px!important}.bt-note{color:#cfd0cc;text-wrap:pretty;max-width:28ch;font-size:14px;line-height:1.45;margin-top:12px!important}.bt-who{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.bt-who article{min-width:0;padding:2px clamp(14px,1.6vw,26px) 6px 0}.bt-who article+article{border-left:1px solid var(--line);padding-left:clamp(14px,1.6vw,26px)}.bt-who h3{letter-spacing:-.035em;color:var(--bright);margin:0;font:600 clamp(24px,2.2vw,36px)/1.05 DM Sans,Arial,sans-serif}.bt-who .bt-cap{color:var(--steel);margin-top:8px}.bt-who p:last-child{color:#cfd0cc;text-wrap:pretty;margin:16px 0 0;font-size:15px;line-height:1.5}.bt-route{list-style:none;position:relative}.bt-route:before{content:"";background:#ffffff38;width:1px;position:absolute;top:22px;bottom:22px;left:3px}.bt-route li{grid-template-columns:minmax(0,13.5em) minmax(0,1fr);align-items:baseline;gap:4px 28px;padding:13px 0 13px 30px;display:grid;position:relative}.bt-route li+li{border-top:1px solid var(--line)}.bt-route li:before{content:"";border:1px solid var(--steel);background:#030304;border-radius:50%;width:5px;height:5px;position:absolute;top:calc(13px + .55em);left:0}.bt-route li:last-child:before{background:var(--bright);border-color:var(--bright)}.bt-route code{font-size:13px}.bt-route p{color:#cfd0cc;text-wrap:pretty;max-width:56ch;margin:0;font-size:15px;line-height:1.5}.bt-rules{border-top:1px solid var(--line);margin:0;padding:0;list-style:none}.bt-rules li{border-bottom:1px solid var(--line);grid-template-columns:4.6em minmax(0,11em) minmax(0,1fr);align-items:baseline;gap:4px 20px;padding:11px 0;font-size:15px;line-height:1.45;display:grid}.bt-rules .bt-cap{color:var(--faint)}.bt-rules code{color:var(--steel);font-size:12.5px}.bt-out{margin:clamp(36px,5svh,52px) 0 0}.bt-out figcaption{color:var(--steel)}.bt-out pre{border:1px solid var(--line);color:#d8d8d4;tab-size:2;white-space:pre-wrap;overflow-wrap:anywhere;background:#08090a;border-radius:3px;margin:12px 0 0;padding:clamp(16px,2vw,24px);font:400 12.5px/1.6 IBM Plex Mono,monospace;overflow-x:auto}.bt-table{border-top:1px solid var(--line);overflow-x:auto}.bt-table table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;min-width:560px;font-size:15px;line-height:1.4}.bt-table th,.bt-table td{border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;padding:11px 18px 11px 0;font-weight:400}.bt-table thead th{letter-spacing:.08em;text-transform:uppercase;color:var(--steel);font:400 10px/1.6 IBM Plex Mono,monospace}.bt-table tbody th a{color:var(--bright)}.bt-table td{color:#cfd0cc}.bt-table td:last-child{color:var(--faint);font:400 12px/1.4 IBM Plex Mono,monospace}.bt-lessons{counter-reset:lesson;border-top:1px solid var(--line);margin:0;padding:0;list-style:none}.bt-lessons li{counter-increment:lesson;border-bottom:1px solid var(--line);color:#cfd0cc;grid-template-columns:2.6em minmax(0,1fr);max-width:72ch;padding:12px 0;font-size:15px;line-height:1.5;display:grid}.bt-lessons li>span{min-width:0}.bt-lessons li:before{content:counter(lesson, decimal-leading-zero);letter-spacing:.08em;color:var(--steel);font:400 10px/2.3 IBM Plex Mono,monospace}.bt-lessons strong{color:var(--bright);font-weight:500}.bt-where>div{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,7em) minmax(0,1fr);gap:4px 28px;padding:12px 0;display:grid}.bt-where>div:first-child{border-top:1px solid var(--line)}.bt-where dt{color:var(--bright);font:600 15px/1.5 DM Sans,Arial,sans-serif}.bt-where dd{color:#cfd0cc;max-width:60ch;margin:0;font-size:15px;line-height:1.5}.bt-end{border-top:1px solid var(--line);flex-wrap:wrap;gap:12px clamp(32px,5vw,80px);margin-top:clamp(80px,14svh,160px);padding-top:clamp(18px,2.6svh,28px);display:flex}.bt-end a{letter-spacing:-.05em;color:var(--bright);gap:.35em;font:600 clamp(32px,4.4vw,76px)/1 DM Sans,Arial,sans-serif;display:inline-flex}.bt-end a span{color:var(--steel);transition:transform .35s cubic-bezier(.2,.7,.2,1),color .3s}.bt-end a:hover span{color:var(--bright);transform:translate(.12em)}.bt-end a[href^=mailto]:hover span{transform:translate(.08em,-.08em)}@media (prefers-reduced-motion:reduce){.bt-up i,.bt-down i{animation:none}.bt-col:before,.bt-end a span{transition:none}.bt-end a:hover span{transform:none}}@media (max-width:900px){.bt-head,.bt-sec{grid-template-columns:minmax(0,1fr)}.bt-lead,.bt-body{grid-column:1}.bt-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.bt-stats>div{padding-bottom:20px}.bt-stats>div:nth-child(3){border-left:0;padding-left:0}.bt-stats>div:nth-child(n+3){border-top:1px solid var(--line)}.bt-who{grid-template-columns:minmax(0,1fr)}.bt-who article+article{border-left:0;border-top:1px solid var(--line);padding-left:0}.bt-who article{padding-bottom:20px}}@media (max-width:640px){.bt-hist{--tick:2px}.bt-route li{grid-template-columns:minmax(0,1fr)}.bt-rules li{grid-template-columns:4.6em minmax(0,1fr)}.bt-rules li span:last-child{grid-column:2}.bt-where>div{grid-template-columns:minmax(0,1fr)}.bt-axis-date{padding-left:3px;font-size:9px}.bt-axis-mark{font-size:9px}.bt-num{font-size:34px}.bt-note{font-size:13px}}