/* PerpBrain docs — layers on /styles.css. Draft for v0.1. */
.dx{flex:1;display:grid;grid-template-columns:220px minmax(0,1fr);column-gap:56px;padding-top:56px;padding-bottom:40px}
.dx-side{position:sticky;top:24px;align-self:start}
.dx-side .sf-h{margin-bottom:12px}
.dx-side ul{list-style:none;padding:0;margin:0;border-left:1px solid var(--line)}
.dx-side li a{display:flex;align-items:center;min-height:36px;padding-left:16px;margin-left:-1px;border-left:1px solid transparent;color:var(--muted);text-decoration:none;font-size:14px}
.dx-side li a:hover{color:var(--text)}
.dx-side li a[aria-current=page]{color:var(--text);border-left-color:var(--lime)}
.dx-main{max-width:780px;min-width:0}
.dx-main h1{font-size:clamp(22px,3vw,34px);margin-bottom:16px}
.dx-main .lede{font-size:18px;line-height:1.55;color:var(--muted);margin-bottom:8px;max-width:40em}
.dx-main h2{font:400 13.5px/1.4 "Michroma",sans-serif;text-transform:uppercase;letter-spacing:.08em;margin:48px 0 14px;color:var(--text);scroll-margin-top:24px}
.dx-main h3{font:500 16px/1.4 "Archivo",sans-serif;margin:28px 0 10px;color:var(--text)}
.dx-main p,.dx-main li{color:var(--muted);margin-bottom:12px}
.dx-main ul,.dx-main ol{padding-left:20px}
.dx-main strong{color:var(--text);font-weight:500}
.dx-main code{font-family:"Martian",ui-monospace,monospace;font-size:.82em;color:var(--text);background:var(--surface);border:1px solid var(--line);padding:1px 5px;overflow-wrap:anywhere}
.dx-main pre{position:relative;margin:16px 0 20px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-left:2px solid var(--lime);overflow-x:auto;-webkit-overflow-scrolling:touch}
.dx-main pre code{display:block;background:none;border:0;padding:0;font-size:12.5px;line-height:1.7;color:var(--text);white-space:pre;overflow-wrap:normal}
.dx-main pre .c{color:var(--subtle)}
.dx-main .tbl{overflow-x:auto;margin:16px 0 20px;border:1px solid var(--line)}
.dx-main table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
.dx-main th,.dx-main td{padding:10px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);color:var(--muted)}
.dx-main th{font:400 10.5px "Michroma",sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--text);background:var(--surface)}
.dx-main tr:last-child td{border-bottom:0}
.callout{margin:20px 0;padding:14px 16px;border:1px dashed var(--line2);color:var(--muted);font-size:14.5px}
.callout b{color:var(--lime);font:400 10.5px "Michroma",sans-serif;letter-spacing:.14em;text-transform:uppercase;display:block;margin-bottom:6px}
.callout.warn b{color:#F2C94C}
.draft-flag{display:inline-flex;gap:8px;align-items:center;color:var(--subtle)}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps>li{counter-increment:s;position:relative;padding-left:44px;margin-bottom:20px}
.steps>li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:1px;font:400 11px "Martian",monospace;color:var(--bg);background:var(--lime);padding:3px 6px}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:24px 0}
.cards a{display:block;padding:18px;border:1px solid var(--line);background:rgba(18,21,26,.6);text-decoration:none;transition:border-color .2s var(--ease)}
.cards a:hover{border-color:var(--lime)}
.cards .t{font:400 12px "Michroma",sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--text);display:block;margin-bottom:8px}
.cards .d{font-size:14px;color:var(--muted)}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:56px;padding-top:20px;border-top:1px solid var(--line)}
.pager a{display:flex;flex-direction:column;gap:4px;min-height:44px;text-decoration:none;color:var(--text);font-size:15px}
.pager a span{color:var(--subtle)}
.pager a.next{text-align:right;margin-left:auto}
.dx-mnav{display:none}
@media (max-width:900px){
 .dx{grid-template-columns:minmax(0,1fr);padding-top:24px}
 .dx-side{display:none}
 .dx-mnav{display:block;margin-bottom:28px;border:1px solid var(--line2)}
 .dx-mnav summary{list-style:none;display:flex;justify-content:space-between;align-items:center;min-height:48px;padding:0 16px;cursor:pointer;font:400 11px "Michroma",sans-serif;letter-spacing:.14em;text-transform:uppercase}
 .dx-mnav summary::-webkit-details-marker{display:none}
 .dx-mnav summary::after{content:"+";color:var(--lime);font-size:16px}
 .dx-mnav[open] summary::after{content:"–"}
 .dx-mnav ul{list-style:none;margin:0;padding:0 0 8px;border-top:1px solid var(--line)}
 .dx-mnav li a{display:flex;align-items:center;min-height:44px;padding:0 16px;color:var(--muted);text-decoration:none}
 .dx-mnav li a[aria-current=page]{color:var(--text);box-shadow:inset 2px 0 var(--lime)}
}
@media (max-width:560px){
 .dx{padding-left:20px;padding-right:20px}
 .cards{grid-template-columns:minmax(0,1fr)}
 .dx-main .lede{font-size:16.5px}
 .dx-main pre code{font-size:11.5px}
 .dx-main pre{margin-left:-20px;margin-right:-20px;border-left-width:2px;border-right:0}
 .pager{flex-direction:column}
 .pager a.next{text-align:left;margin-left:0}
}
.dx-main .copyblock{position:relative}
.dx-main .copyblock pre{padding-right:84px}
.dx-main .copy{position:absolute;top:10px;right:10px;min-height:32px;padding:0 12px;background:var(--bg,#0B0D10);color:var(--lime);border:1px solid var(--line2,var(--line));font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;cursor:pointer}
.dx-main .copy:hover{border-color:var(--lime)}
.dx-side ul.dx-side2{margin-top:16px}