/* ---------- motion: page change, header, hover/press/focus, slide entrance, scroll reveal ----------
   Entrance and reveal run only with html.motion (set in <head> unless the visitor asks for less motion). */
@view-transition{navigation:auto}
/* a plain crossfade; the header (and quick bar) stay put */
::view-transition-old(root){animation:vt-out .22s ease both}
::view-transition-new(root){animation:vt-in .32s ease both}
@keyframes vt-out{to{opacity:0}}
@keyframes vt-in{from{opacity:0}}
.site-header{view-transition-name:site-header}
.scroll-progress{view-transition-name:progress}
::view-transition-group(site-header),::view-transition-group(progress){animation:none}
::view-transition-old(site-header),::view-transition-new(site-header),::view-transition-old(progress),::view-transition-new(progress){animation:none}
::view-transition-old(site-header),::view-transition-old(progress){display:none}
@media (prefers-reduced-motion:reduce){::view-transition-old(root),::view-transition-new(root){animation:none}}

.scroll-progress{position:fixed;left:0;top:0;right:0;height:2px;z-index:60;background:linear-gradient(90deg,var(--asem),var(--navy));transform-origin:0 50%;transform:scaleX(0);pointer-events:none}

/* header: shrinks and gets a soft shadow once the page scrolls */
.site-header{transition:box-shadow .35s,background .35s}
.site-header .bar{transition:height .35s}
.site-header .logo img{transition:height .35s}
html.scrolled .site-header{background:rgba(255,255,255,.9);backdrop-filter:blur(12px) saturate(150%);-webkit-backdrop-filter:blur(12px) saturate(150%);box-shadow:0 8px 28px rgba(20,30,60,.08)}
html.scrolled .site-header .bar{height:68px}
html.scrolled .site-header .logo img{height:44px}

/* menu: underline grows from the centre, sub menu fades in */
@media (min-width:1001px){
  .nav>ul>li>a{position:relative}
  .nav>ul>li>a:after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--navy);transform:scaleX(0);transition:transform .35s cubic-bezier(.2,.7,.2,1)}
  .nav>ul>li>a:hover:after,.nav>ul>li>a.on:after,.nav .has-sub:hover>a:after{transform:scaleX(1)}
  .nav li.tp a:after{display:none}
  .nav .sub{display:block;visibility:hidden;opacity:0;transform:translateY(8px);transition:opacity .22s,transform .3s cubic-bezier(.2,.7,.2,1),visibility .3s}
  .nav .has-sub:hover .sub,.nav .has-sub:focus-within .sub{visibility:visible;opacity:1;transform:none}
  .nav .sub a{transition:background .2s,color .2s,padding .25s}
  .nav .sub a:hover{padding-left:26px}
}

/* buttons and links */
.btn{position:relative;overflow:hidden;isolation:isolate;transition:background .25s,color .25s,box-shadow .25s,transform .25s cubic-bezier(.2,.7,.2,1)}
.btn:before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.28) 50%,transparent 70%);transform:translateX(-120%);transition:transform .75s cubic-bezier(.2,.7,.2,1)}
.btn:hover{transform:translateY(-2px)}
.btn:hover:before{transform:translateX(120%)}
.btn.primary:hover{box-shadow:0 10px 24px rgba(26,46,140,.28)}
.more,.past a,.pager a,.paper a.t{background:linear-gradient(currentColor,currentColor) 0 100%/0 1px no-repeat;transition:background-size .35s cubic-bezier(.2,.7,.2,1),color .2s}
.more:hover,.past a:hover,.pager a:hover,.paper a.t:hover{background-size:100% 1px;text-decoration:none}
.jump a{transition:border-color .2s,color .2s,background .2s}
.jump a:hover{border-color:var(--navy);color:var(--navy)}
a,button{-webkit-tap-highlight-color:transparent}
.btn:active,.qc:active,.vcard:active,.vol:active,.jump a:active,.paper .pdf:active,.slider .arrow:active,.menu-btn:active{scale:.97;transition:scale .08s}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--asem);outline-offset:4px;transition:outline-offset .2s}

/* cards */
.qc .qi{transition:background .3s,color .3s,transform .45s cubic-bezier(.2,.7,.2,1.4)}
.qc:hover .qi{transform:scale(1.08) rotate(-4deg)}
.disc{transition:transform .45s cubic-bezier(.2,.7,.2,1),box-shadow .45s}
.vol:hover .disc,.c:hover .disc,.vcard:hover .disc{transform:translateY(-5px) rotate(-6deg);box-shadow:0 2px 4px rgba(20,30,60,.08),0 16px 34px rgba(20,30,60,.16)}
.vcard{transition:border-color .25s,box-shadow .25s,transform .3s cubic-bezier(.2,.7,.2,1)}
.vcard:hover{transform:translateY(-2px)}
.paper{transition:background .2s}
.paper:hover{background:linear-gradient(90deg,var(--soft),transparent)}
.photos img{transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.photos a:hover img,.photos img:hover{transform:scale(1.03)}
.search{transition:border-color .25s,box-shadow .25s}
.search:focus-within{box-shadow:0 0 0 4px rgba(10,90,168,.12)}

/* banner: the photo of the visible slide zooms slowly, its text rises in */
.slide{overflow:hidden}
.slide .bg{transition:transform 7s cubic-bezier(.2,.6,.3,1)}
html.motion .slide .bg{transform:scale(1.08)}
html.motion .slide.active .bg{transform:scale(1)}
html.motion .slide .hs>*{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
html.motion .slide.active .hs>*{opacity:1;transform:none}
html.motion .slide.active .hs>*:nth-child(2){transition-delay:.1s}
html.motion .slide.active .hs>*:nth-child(3){transition-delay:.2s}
html.motion .slide.active .hs>*:nth-child(4){transition-delay:.3s}
html.motion .slide.active .hs>*:nth-child(n+5){transition-delay:.4s}

/* page title entrance */
html.motion .page-head .crumb,html.motion .page-head h1,html.motion .page-head .sub-title,html.motion .page-head .tag,html.motion .page-head .meta-line,html.motion .page-head .disc{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
html.motion .page-head h1{animation-delay:.08s}
html.motion .page-head .sub-title,html.motion .page-head .meta-line{animation-delay:.16s}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}

/* scroll reveal (motion.js marks the elements) */
html.motion [data-reveal]{opacity:0;translate:0 24px;transition:opacity .9s cubic-bezier(.2,.7,.2,1) var(--d,0s),translate .9s cubic-bezier(.2,.7,.2,1) var(--d,0s),border-color .3s,box-shadow .3s,transform .3s cubic-bezier(.2,.7,.2,1),color .3s}
html.motion [data-reveal].in{opacity:1;translate:0 0}