/* The slim left sidebar on every public page (assets/rail.js). One dark-blue glass style, legible over both the light
   consultancy pages and the dark software pages. */
#dtd-rail{--rail:54px;font-family:"Josefin Sans",sans-serif}
#dtd-rail .sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.rail-toggle,.rail-tab{position:fixed;left:0;z-index:115;width:var(--rail);color:#fff;background:rgba(10,26,63,.78);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:0;border-right:1px solid rgba(230,237,247,.18)}
.rail-toggle{top:0;height:72px;display:grid;place-items:center;cursor:pointer}
.rail-burger{display:grid;gap:6px}
.rail-burger i{display:block;width:20px;height:1.5px;background:currentColor;transition:transform .5s cubic-bezier(.2,.7,.1,1),opacity .3s}
.rail-burger i:nth-child(2){width:14px}
.rail-toggle:hover .rail-burger i:nth-child(2){width:20px}
#dtd-rail.open .rail-burger i:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
#dtd-rail.open .rail-burger i:nth-child(2){opacity:0}
#dtd-rail.open .rail-burger i:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.rail-tab{display:flex;align-items:center;justify-content:center;height:calc(50vh - 36px);text-decoration:none;transition:background .4s}
.rail-tab:nth-of-type(1){top:72px}
.rail-tab:nth-of-type(2){top:calc(50vh + 36px);border-top:1px solid rgba(230,237,247,.14)}
.rail-tab span{writing-mode:vertical-rl;transform:rotate(180deg);font-size:.7rem;font-weight:400;letter-spacing:.3em;text-transform:uppercase;opacity:.72;transition:opacity .3s,letter-spacing .5s cubic-bezier(.2,.7,.1,1)}
.rail-tab:hover span,.rail-tab.on span{opacity:1;letter-spacing:.36em}
.rail-tab.on{background:rgba(10,26,63,.92);box-shadow:inset 2px 0 0 #fff}
.rail-tab:hover{background:rgba(20,42,92,.9)}
.rail-scrim{position:fixed;inset:0;z-index:128;background:rgba(4,10,30,.45);opacity:0;transition:opacity .5s ease}
.rail-drawer{position:fixed;left:0;top:0;bottom:0;z-index:130;width:min(340px,86vw);overflow-y:auto;padding:22px 26px 40px;background:rgba(10,26,63,.95);color:#fff;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:20px 0 60px rgba(4,10,30,.35);transform:translateX(-102%);transition:transform .55s cubic-bezier(.2,.7,.1,1)}
#dtd-rail.open .rail-drawer{transform:none}
#dtd-rail.open .rail-scrim{opacity:1}
.rail-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.rail-brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-size:.72rem;letter-spacing:.22em;text-transform:uppercase}
.rail-brand .mark{width:46px;height:23px;background:currentColor;-webkit-mask:var(--logo) center/contain no-repeat;mask:var(--logo) center/contain no-repeat}
.rail-close{width:40px;height:40px;border-radius:50%;border:1px solid rgba(230,237,247,.35);background:transparent;color:#fff;font-size:1.4rem;line-height:1;cursor:pointer;transition:transform .4s,background .3s}
.rail-close:hover{transform:rotate(90deg);background:rgba(255,255,255,.1)}
.rail-sec{padding:14px 0 10px;border-top:1px solid rgba(230,237,247,.16)}
.rail-k{display:block;margin-bottom:8px;color:#fff;font-size:.68rem;font-weight:400;letter-spacing:.26em;text-transform:uppercase;text-decoration:none;opacity:.7}
.rail-sec.on .rail-k{opacity:1}
.rail-sec ul{list-style:none}
.rail-sec a:not(.rail-k){display:block;padding:6px 0;color:rgba(255,255,255,.88);text-decoration:none;font-size:1rem;font-weight:300;letter-spacing:.03em;transition:color .3s,transform .4s cubic-bezier(.2,.7,.1,1)}
.rail-sec a:not(.rail-k):hover{color:#fff;transform:translateX(5px)}
.rail-sec a[aria-current]{color:#fff;font-weight:400}
.rail-sec a[aria-current]::before{content:"";display:inline-block;width:14px;height:1px;margin:0 10px 4px 0;background:currentColor}
/* the drawer's items arrive one after another */
.rail-sec{opacity:0;transform:translateX(-16px);transition:opacity .5s ease,transform .6s cubic-bezier(.2,.7,.1,1)}
#dtd-rail.open .rail-sec{opacity:1;transform:none}
#dtd-rail.open .rail-sec:nth-of-type(2){transition-delay:.08s}#dtd-rail.open .rail-sec:nth-of-type(3){transition-delay:.16s}#dtd-rail.open .rail-sec:nth-of-type(4){transition-delay:.24s}
#dtd-rail :focus-visible{outline:2px solid #fff;outline-offset:3px}
html.has-cursor #dtd-rail,html.has-cursor #dtd-rail *{cursor:none}
/* below 1024px: no rail; a round button low on the left opens the same drawer */
@media (max-width:1023px){
  .rail-tab{display:none}
  .rail-toggle{top:auto;bottom:14px;left:12px;width:48px;height:48px;border-radius:50%;border:1px solid rgba(230,237,247,.3);box-shadow:0 10px 30px rgba(4,10,30,.35)}
}
@media (prefers-reduced-motion:reduce){.rail-drawer,.rail-scrim,.rail-sec,.rail-burger i{transition:none}}