:root{--list-surface:rgb(255 255 255 / 58%)}
html.explorer-ready .page{display:none}
.hero{padding:42px 0 14px}
.hero h1{font-size:clamp(34px,5vw,54px)}
.hero .lede{margin-bottom:18px}
.hero .lede{max-width:47em}
.explorer-intro{margin-bottom:14px}
.explorer-intro-top{max-width:670px}
.explorer-intro-top h2{margin-bottom:8px}
.explorer-intro-top p,.reference>p{color:var(--muted);font-size:15px}
.chain-example{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0}
.chain-example span{padding:6px 12px;border:1px solid var(--glass-edge);border-radius:999px;background:var(--list-surface);font:600 13px/1.4 var(--mono)}
.chain-example b{font:600 14px/1 var(--mono);color:var(--muted)}
.explorer{width:min(100% - 40px,1400px);min-height:calc(100vh - 240px);margin:0 auto;display:grid;grid-template-columns:minmax(390px,.95fr) minmax(0,1.05fr);gap:20px;align-items:start}
.directory,.detail{min-width:0;border:1px solid var(--glass-edge);border-radius:var(--r-lg);background:var(--glass-fill);box-shadow:var(--glass-shadow);backdrop-filter:blur(20px)}
.directory{padding:24px}
.directory-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.directory-head h2{font-size:24px;margin:0 0 14px}
#directory-count{white-space:nowrap;color:var(--muted);font:12px/1.4 var(--mono)}
.section-jump{display:none}
.section-jump a{padding:5px 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:12px;line-height:1.3;text-decoration:none;background:rgb(255 255 255 / 34%)}
.section-jump a:hover,.section-jump a:focus-visible{color:var(--ink-strong);background:#fff}
.metric-group{margin:0;padding:0;border-top:1px solid var(--line);scroll-margin-top:18px}
.explorer [hidden]{display:none!important}
.metric-group:last-child{border-bottom:1px solid var(--line)}
.group-summary{display:flex;align-items:center;gap:9px;min-height:45px;padding:7px 5px;cursor:pointer;color:var(--ink-strong);font:800 clamp(16px,1.45vw,19px)/1.25 var(--grotesk);letter-spacing:.015em;text-transform:uppercase;list-style:none}
.group-summary::-webkit-details-marker{display:none}
.group-summary::before{content:'›';font:400 20px/1 var(--sans);color:var(--muted);transition:transform .15s ease}
.metric-group[open] .group-summary::before{transform:rotate(90deg)}
.group-summary:hover,.group-summary:focus-visible{background:rgb(255 255 255 / 38%)}
.group-summary .group-number{color:var(--muted);font:12px/1 var(--mono)}
.group-summary .group-count{margin-left:auto;color:var(--muted);font:12px/1 var(--mono)}
.metric-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;width:100%;min-height:72px;margin:0 0 6px;padding:10px 13px;border:1px solid var(--line);border-radius:12px;background:var(--list-surface);color:var(--ink);text-align:left;cursor:pointer;font:inherit;transition:background .15s ease,box-shadow .15s ease}
.metric-row:hover,.metric-row:focus-visible{background:#fff;box-shadow:0 4px 16px rgb(26 26 26 / 8%)}
.metric-row[aria-current="true"]{border:2px solid var(--ink-strong);padding:9px 12px;background:#fff;box-shadow:inset 3px 0 0 var(--ink-strong)}
.metric-row-text{min-width:0}
.metric-row strong{display:block;font:750 15px/1.35 var(--grotesk);color:var(--ink-strong)}
.metric-row small{display:block;margin-top:3px;color:var(--muted);font:12px/1.35 var(--sans);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.metric-row .arrow{color:var(--muted);font-size:18px}
.detail{position:sticky;top:18px;max-height:calc(100vh - 36px);overflow-y:auto;overscroll-behavior:contain;padding:22px 26px 26px;scrollbar-width:thin}
.detail-head{display:none}
.detail-head button{display:none;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font:600 13px/1.2 var(--sans);cursor:pointer}
.detail .m{border:0;border-radius:0;background:none;box-shadow:none;backdrop-filter:none;padding:0;display:block}
.detail .m h3{font-size:clamp(34px,3.6vw,48px);font-weight:800;line-height:1.02;letter-spacing:-.02em;color:var(--ink-strong);margin:0 0 6px}
.detail .m .full{font-size:15px;margin-bottom:20px}
.detail .m .art{width:100%;max-width:none;margin:0 0 18px;padding:0;border:0;background:none}
.detail .m .f{margin:0 0 14px;padding:12px 14px;font-size:13px}
.detail .m p{font-size:15px;line-height:1.65}
.detail .m .terms{margin:14px 0 18px;padding:12px 16px 12px 30px;border:1px solid var(--line);border-radius:12px;background:rgb(255 255 255 / 58%);color:var(--muted);font-size:13px;line-height:1.55}
.detail .m .terms li{margin:4px 0}
.detail .m .terms b{color:var(--ink-strong)}
.detail .m>.up{display:none}
.detail-heading{margin:22px 0 9px!important;color:var(--ink-strong);font-size:12px!important}
.detail .m .ex .detail-heading{margin-top:0!important}
.ex .calc{margin-top:0}
.relations{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:24px 0 0;padding:18px 0 4px;border-top:1px solid var(--line)}
.relation-row{min-width:0;padding:0 16px}
.relation-row:first-child{padding-left:0}
.relation-row:last-child{padding-right:0}
.relation-row+.relation-row{border-left:1px solid var(--line)}
.relation-label{margin:0 0 10px!important;color:var(--ink-strong)!important;font-size:11px!important}
.relation-links{display:flex;flex-wrap:wrap;gap:6px}
.relation-links a{display:inline-flex;align-items:center;gap:6px;max-width:100%;min-height:32px;padding:4px 10px;border:1px solid var(--line);border-radius:8px;background:rgb(255 255 255 / 72%);color:var(--ink-strong);font-size:13px;line-height:1.3;text-decoration:none}
.relation-links a::after{content:'›' / '';color:var(--muted);font-size:14px;line-height:1}
.relation-links a:hover,.relation-links a:focus-visible{background:#fff;text-decoration:underline}
.relation-links a.model-link{border-style:dashed}
.relation-none{color:var(--muted);font-size:13px;line-height:32px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.detail .m .art+p{margin:14px 0 0}
.detail .m>.detail-heading{margin-top:22px!important;padding-top:18px;border-top:1px solid var(--line)}
.detail .m .ex{padding-top:18px;border-top:1px solid var(--line)}
.note-label{margin:14px 0 2px!important;color:var(--ink-strong);font-size:13px!important;font-weight:700}
.ex .note-label+.note{margin-top:0}
.reference{margin-top:70px}
.reference h2{margin-bottom:8px;font-size:clamp(30px,4.2vw,44px);font-weight:800;line-height:1.05;text-transform:uppercase}
#reference-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin-top:20px}
.reference-card{padding:22px;border:1px solid var(--glass-edge);border-radius:var(--r-lg);background:var(--glass-fill);box-shadow:var(--glass-shadow)}
.reference-card>summary{min-height:24px;cursor:pointer;font:750 18px/1.3 var(--grotesk);color:var(--ink-strong)}
.reference-card .flow{margin-top:16px}
.reference-card .flow li{padding:11px 13px}
.reference-card .flow li .name{font-size:15px}
.reference-card .flow li .say{font-size:12px}
.reference-card .flow .op{padding:6px 13px 6px 25px;font-size:11px}
.reference-card .plain{font-size:13px}
.reference-card .plain li{margin-bottom:7px}
.traps-panel{width:min(100% - 40px,1080px);margin:52px auto 0;padding:26px;border:1px solid var(--glass-edge);border-radius:var(--r-lg);background:var(--glass-fill);box-shadow:var(--glass-shadow)}
.traps-panel h2{margin-bottom:18px;font-size:clamp(30px,4.2vw,44px);font-weight:800;line-height:1.05;text-transform:uppercase}
.traps-panel .plain{columns:2;column-gap:40px}
.traps-panel .plain li{break-inside:avoid}
.source-note{width:min(100% - 40px,1080px);margin:18px auto 0;color:var(--muted);font-size:12px}
.search input:focus-visible,.metric-row:focus-visible,.group-summary:focus-visible,.reference-card>summary:focus-visible,.detail button:focus-visible,.detail a:focus-visible{outline:2px solid var(--ink-strong);outline-offset:2px}
.empty{margin-top:20px}
@media(max-width:900px){
  .hero{padding-top:26px}
  .explorer{display:block}
  .directory{padding:18px}
  .detail{position:fixed;inset:0;z-index:20;max-height:none;overflow-y:auto;border-radius:0;padding:18px max(20px,calc((100vw - 680px)/2));visibility:hidden;transform:translateX(100%);transition:transform .18s ease;background:#e9e9e9}
  body.detail-open{overflow:hidden}
  body.detail-open .detail{visibility:visible;transform:translateX(0)}
  .detail-head{position:sticky;top:-18px;z-index:1;padding:12px 0;background:#e9e9e9}
  .detail-head{display:flex;align-items:center;justify-content:flex-end;margin-bottom:12px}
  .detail .m{scroll-margin-top:84px}
  .detail-head button{display:inline-block}
  .reference{margin-top:48px}
  .traps-panel .plain{columns:1}
}
/* Columns need about 190px each; below that the three groups stack. Measured
   on the card, not the window: at 1024 the card is 450px wide on a wide screen. */
.detail{container-type:inline-size}
@container (max-width:620px){.relations{grid-template-columns:1fr;padding-top:10px}.relation-row{padding:10px 0!important}.relation-row+.relation-row{border-left:0;border-top:1px solid var(--line)}}
@media(max-width:550px){.explorer{width:calc(100% - 24px)}.explorer-intro{width:calc(100% - 24px)}.chain-example{gap:5px}.chain-example span{font-size:11px;padding:5px 8px}.directory{padding:14px}.metric-row{min-height:66px}.section-jump a{font-size:11px}}
@media(prefers-reduced-motion:reduce){.detail,.metric-row{transition:none}}
@media print{.detail{position:static;max-height:none}.directory{display:none}.reference{break-before:page}}

/* Search lives in the top bar; the page title is for screen readers and search engines. */
.top-search{position:relative;flex:0 1 380px;min-width:0}
.top-search .search{max-width:none;margin:0}
.top-search .hits{position:absolute;right:4px;top:100%;margin:6px 0 0;min-height:0;font-size:12px}
main{padding-top:26px}
.explorer-bar{grid-column:1/-1;display:flex;justify-content:flex-start;margin-bottom:-6px}
.list-toggle{display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:6px 14px;border:1px solid var(--glass-edge);border-radius:999px;background:var(--glass-fill);box-shadow:var(--glass-shadow);color:var(--ink-strong);font:600 13px/1.2 var(--sans);cursor:pointer}
.list-toggle::before{content:'‹' / '';font-size:17px;line-height:1;color:var(--muted)}
.list-toggle[aria-expanded="false"]::before{content:'≡' / ''}
.list-toggle:hover,.list-toggle:focus-visible{background:#fff}
.list-toggle:focus-visible{outline:2px solid var(--ink-strong);outline-offset:2px}
@media(min-width:901px){
  .list-collapsed .explorer{grid-template-columns:minmax(0,1fr)}
  .list-collapsed .directory{display:none}
  .list-collapsed .explorer-bar{width:min(100%,900px);margin:0 auto -6px}
  .list-collapsed .detail{position:static;max-height:none;overflow:visible;width:min(100%,900px);margin:0 auto;padding:34px 44px 40px;scroll-margin-top:16px}
}
@media(max-width:900px){.explorer-bar{display:none}}
@media(max-width:640px){
  .topbar .wrap{flex-wrap:wrap}
  .top-search{flex:1 1 100%}
}

/* Card pager: fixed arrows beside the centred card, only while the list is folded away. */
.card-pager{display:none}
.card-pager button{position:fixed;top:50%;z-index:5;display:grid;place-items:center;width:48px;height:48px;margin-top:-24px;padding:0;border:1px solid var(--glass-edge);border-radius:999px;background:var(--glass-fill);box-shadow:var(--glass-shadow);backdrop-filter:blur(20px);color:var(--ink-strong);font:400 28px/1 var(--sans);cursor:pointer;transition:background .15s ease}
.card-pager span{margin-top:-3px}
.card-pager .pager-prev{left:calc(50% - min(450px,(100vw - 168px) / 2) - 72px)}
.card-pager .pager-next{right:calc(50% - min(450px,(100vw - 168px) / 2) - 72px)}
.card-pager button:hover:not(:disabled),.card-pager button:focus-visible{background:#fff}
.card-pager button:focus-visible{outline:2px solid var(--ink-strong);outline-offset:2px}
.card-pager button:disabled{opacity:.35;cursor:default}
@media(min-width:901px){
  .list-collapsed .card-pager{display:block}
  .list-collapsed .detail,.list-collapsed .explorer-bar{width:min(100% - 128px,900px)}
}
@media print{.card-pager{display:none!important}}
.fold-all{flex:none;min-height:30px;padding:5px 12px;border:1px solid var(--line);border-radius:999px;background:rgb(255 255 255 / 58%);color:var(--ink-strong);font:600 12px/1.2 var(--sans);cursor:pointer}
.fold-all:hover,.fold-all:focus-visible{background:#fff}
.fold-all:focus-visible{outline:2px solid var(--ink-strong);outline-offset:2px}

/* Language switch hidden on request 2026-09-26; hreflang in <head> still links EN and RU. Delete this rule to bring it back. */
.topbar .lang{display:none}