/* String ProTech client hub. Pure greyscale, every hex R=G=B.
   State is carried by border weight, fill inversion and case, never by hue. */
:root{
  --ground:#0a0a0a; --surface:rgba(255,255,255,0.03); --raised:rgba(255,255,255,0.06);
  --line:rgba(255,255,255,0.08); --line-strong:rgba(255,255,255,0.2);
  --muted:rgba(255,255,255,0.5); --dim:rgba(255,255,255,0.3); --text:#f0f0f0; --bright:#FFFFFF;
  --display:"Space Grotesk",system-ui,sans-serif;
  --body:"Space Grotesk",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{background:var(--ground);-webkit-font-smoothing:antialiased}
body{background:var(--ground);color:var(--text);font-family:var(--body);font-size:16px;line-height:1.62}
.wrap{max-width:74ch;margin:0 auto;padding:56px 24px 96px;display:flex;flex-direction:column;gap:36px}
a{color:var(--bright);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-strong)}
a:hover{text-decoration-color:var(--bright)}
a:focus-visible{outline:2px solid var(--bright);outline-offset:3px}

.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}
.back{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line);padding-bottom:2px;align-self:flex-start}
.back:hover{color:var(--bright);border-color:var(--bright)}

h1{font-family:var(--display);font-weight:700;letter-spacing:-.035em;font-size:clamp(32px,6vw,46px);line-height:1.12;color:var(--bright);letter-spacing:-.01em;text-wrap:balance}
h2{font-family:var(--display);font-weight:600;letter-spacing:-.02em;font-size:25px;line-height:1.25;color:var(--bright);margin-top:14px;text-wrap:balance}
h3{font-size:16px;font-weight:600;color:var(--bright);margin-top:10px}
h4{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-top:10px}
.doc{display:flex;flex-direction:column;gap:15px}
.doc p{max-width:66ch}
strong{color:var(--bright);font-weight:600}
code{font-family:var(--mono);font-size:.88em;background:var(--raised);border:1px solid var(--line);padding:1px 5px;border-radius:3px;color:var(--text)}
pre{background:var(--surface);border:1px solid var(--line);padding:16px;overflow-x:auto}
pre code{background:none;border:none;padding:0;font-size:12.5px;line-height:1.6}
ul{padding-left:20px;display:flex;flex-direction:column;gap:6px}
li{max-width:64ch}

.scroll{overflow-x:auto;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 11px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);font-weight:400;background:var(--surface)}
tr:last-child td{border-bottom:none}
td:has(code){font-variant-numeric:tabular-nums}

/* hub cards. rank by number, status by border weight and fill, never colour */
.cards{display:flex;flex-direction:column;gap:9px}
.card{display:flex;align-items:center;gap:18px;padding:19px 21px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--text);transition:border-color .2s,background .2s,transform .2s}
.card:hover{background:var(--raised);border-color:var(--line-strong);transform:translateY(-1px)}
.card .n{font-family:var(--mono);font-size:11px;color:var(--dim);width:22px;flex-shrink:0;font-variant-numeric:tabular-nums}
.card .t{font-weight:600;font-size:15px;color:var(--bright);margin-bottom:2px}
.card .d{font-family:var(--mono);font-size:11px;color:var(--dim);line-height:1.5}
.card .body{flex:1;min-width:0}
.card .arrow{color:var(--dim);flex-shrink:0;transition:transform .2s,color .2s}
.card:hover .arrow{color:var(--bright);transform:translateX(3px)}
/* the headline document: inverted fill, no colour used */
.card.primary{background:var(--bright);border-color:var(--bright)}
.card.primary .t,.card.primary .n,.card.primary .d,.card.primary .arrow{color:#0A0A0A}
.card.primary:hover{background:#E8E8E8;border-color:#E8E8E8}

/* gap-as-rule: 1px grid gaps show the container colour, so dividers resolve
   cleanly. Single column below the wrap point, because a half-filled row would
   leave the container colour showing as an empty block. */
.stat-strip{display:grid;grid-template-columns:1fr;border:1px solid var(--line);gap:1px;background:var(--line)}
.stat{padding:18px 20px;background:var(--ground)}
@media(min-width:560px){
  .stat-strip{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
}
.stat .v{font-family:var(--mono);font-size:24px;color:var(--bright);font-variant-numeric:tabular-nums;line-height:1.2}
.stat .k{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);margin-top:6px}

.callout{border-left:2px solid var(--line-strong);padding:3px 0 3px 19px}
.note{background:var(--surface);border:1px dashed var(--line-strong);padding:20px 22px;display:flex;flex-direction:column;gap:10px}

footer{border-top:1px solid var(--line);padding-top:24px;display:flex;flex-direction:column;gap:6px;margin-top:14px}
.byline{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--bright)}
.fine{font-size:13px;color:var(--dim)}

@media print{
  body{background:#fff;color:#000}
  .card,.scroll,pre,.note{border-color:#bbb}
  .back{display:none}
  h1,h2,h3,strong,.byline{color:#000}
}