:root{
  --paper:#F4F6F7; --sheet:#FFFFFF; --ink:#1C2733; --ink-2:#4A5865; --ink-3:#7C8994; --rule:#D3DAE0;
  --copper:#B4602A; --copper-soft:#F6E9DF; --cable:#245F8F; --cable-soft:#E3EDF5; --mono-bg:#EEF2F4;
  --good:#2F7A4F; --bad:#A63D3D; --band:#141C24; --band-ink:#F2F5F7;
  --grid:#E4E9ED; --quad:#F7F9FA;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#111820; --sheet:#182129; --ink:#E6ECF1; --ink-2:#B3BEC8; --ink-3:#7F8C98; --rule:#2E3A46;
    --copper:#D98A4F; --copper-soft:#3A2A1E; --cable:#6FA6D6; --cable-soft:#1E2F3F; --mono-bg:#0F161D;
    --good:#6CC08B; --bad:#E07A7A; --band:#0B1017; --band-ink:#F2F5F7;
    --grid:#26313C; --quad:#141C24;
  }
}
:root[data-theme="dark"]{
  --paper:#111820; --sheet:#182129; --ink:#E6ECF1; --ink-2:#B3BEC8; --ink-3:#7F8C98; --rule:#2E3A46;
  --copper:#D98A4F; --copper-soft:#3A2A1E; --cable:#6FA6D6; --cable-soft:#1E2F3F; --mono-bg:#0F161D;
  --good:#6CC08B; --bad:#E07A7A; --band:#0B1017; --band-ink:#F2F5F7;
  --grid:#26313C; --quad:#141C24;
}
*{box-sizing:border-box}
body{background:var(--paper);color:var(--ink);font-family:"IBM Plex Serif",Georgia,"Times New Roman",serif;font-size:15px;line-height:1.5;padding-block:24px;padding-inline:16px}
.wrap{max-width:900px;margin:0 auto}
.page{background:var(--sheet);border:1px solid var(--rule);margin-bottom:28px}
.inner{padding:32px 48px 40px}
.band{background:var(--band);color:var(--band-ink);padding:26px 48px 22px;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.band .brand{font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-size:13px;letter-spacing:0.22em;text-transform:uppercase;font-weight:700;opacity:.85;margin-bottom:10px}
.band h1{color:var(--band-ink)}
.band .lede{opacity:.88}
.band .meta{font-family:"IBM Plex Mono",Menlo,Consolas,monospace;font-size:12px;opacity:.75;text-align:right;line-height:1.6}
h1,h2,h3{font-family:"IBM Plex Sans Condensed","Arial Narrow",Arial,sans-serif;text-wrap:balance;margin:0;line-height:1.1}
h1{font-size:40px;font-weight:700;letter-spacing:-0.01em}
h2{font-size:21px;font-weight:700;color:var(--cable);margin-top:28px;margin-bottom:8px;text-transform:uppercase;letter-spacing:0.04em}
h3{font-size:17px;font-weight:600;margin-bottom:4px}
p{margin:0 0 12px;max-width:70ch}
.lede{font-size:17px;font-style:italic;max-width:62ch;margin-top:10px}
nav.tabs{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--paper);display:flex;gap:6px;flex-wrap:wrap;padding-block:10px;margin-bottom:16px;border-bottom:1px solid var(--rule)}
nav.tabs button{font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-weight:600;font-size:15px;letter-spacing:0.03em;background:var(--sheet);color:var(--ink-2);border:1px solid var(--rule);padding:8px 16px;cursor:pointer;border-radius:2px}
nav.tabs button:hover{color:var(--ink)}
nav.tabs button:focus-visible{outline:2px solid var(--cable);outline-offset:2px}
nav.tabs button[aria-selected="true"]{background:var(--ink);color:var(--sheet);border-color:var(--ink)}
.callout{border-top:2px solid var(--copper);border-bottom:2px solid var(--copper);padding:12px 0;margin:16px 0;font-size:16px;font-weight:600;font-family:"IBM Plex Sans Condensed",Arial,sans-serif;max-width:none}
.two{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.tile{background:var(--cable-soft);padding:12px 14px 10px;border-top:3px solid var(--cable)}
.tile b{display:block;font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-size:15px;margin-bottom:4px}
.tile span{font-size:13px;color:var(--ink-2);line-height:1.4;display:block}
.tile.copper{background:var(--copper-soft);border-top-color:var(--copper)}
.phrases{list-style:none;padding:0;margin:8px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:6px 18px}
.phrases li{font-family:"IBM Plex Mono",Menlo,Consolas,monospace;font-size:12.5px;padding:7px 10px;background:var(--mono-bg);border-left:3px solid var(--cable)}
.steps{counter-reset:step;list-style:none;padding:0;margin:8px 0 0}
.steps li{position:relative;padding:6px 0 12px 44px;border-bottom:1px solid var(--rule);margin-bottom:8px}
.steps li:last-child{border-bottom:0}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:6px;width:30px;height:30px;background:var(--cable);color:#fff;font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;border-radius:50%}
.steps b{font-family:"IBM Plex Sans Condensed",Arial,sans-serif}
table{width:100%;border-collapse:collapse;font-size:14px;margin-top:6px}
th{font-family:"IBM Plex Sans Condensed",Arial,sans-serif;text-align:left;font-size:12px;letter-spacing:0.1em;text-transform:uppercase;color:var(--ink-3);padding:6px 8px 6px 0;border-bottom:2px solid var(--ink)}
td{padding:8px 8px 8px 0;border-bottom:1px solid var(--rule);vertical-align:top;line-height:1.4}
td:first-child{font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-weight:600}
.tablewrap{overflow-x:auto}
.flag{border:1px solid var(--rule);border-left:4px solid var(--copper);padding:14px 18px;margin:12px 0}
.flag .tag{font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-size:12px;letter-spacing:0.12em;text-transform:uppercase;font-weight:600;color:var(--copper);margin-bottom:6px}
.verdict{background:var(--copper-soft);border:1px solid var(--copper);padding:14px 18px;margin-top:14px}
.footer{margin-top:26px;padding-top:12px;border-top:1px solid var(--rule);font-family:"IBM Plex Mono",Menlo,Consolas,monospace;font-size:11.5px;color:var(--ink-3);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.note{font-size:13px;color:var(--ink-3)}
.contact{margin-top:18px;font-size:14px;color:var(--ink-2)}
.qlist{list-style:none;padding:0;margin:8px 0 0}
.qlist li{padding:10px 0 10px 0;border-bottom:1px solid var(--rule);display:flex;gap:12px;align-items:flex-start}
.qlist li:last-child{border-bottom:0}
.qlist .q{font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-weight:700;color:var(--cable);white-space:nowrap;font-size:13px;letter-spacing:0.08em;text-transform:uppercase;padding-top:2px;min-width:120px}
.gloss{columns:2;column-gap:32px}
.gloss dt{font-family:"IBM Plex Sans Condensed",Arial,sans-serif;font-weight:700;color:var(--cable);font-size:14px;margin-top:10px;break-after:avoid}
.gloss dd{margin:0 0 4px;font-size:13.5px;line-height:1.45;break-inside:avoid}
.gloss dl{margin:0}
@media (max-width:640px){
  .gloss{columns:1}
  .inner{padding:24px 20px} .band{padding:22px 20px 18px} h1{font-size:30px}
  .two,.three,.phrases{grid-template-columns:1fr}
  .band .meta{text-align:left}
  .qlist li{flex-direction:column;gap:2px} .qlist .q{min-width:0}
}
@media print{
  @page{size:letter;margin:0.45in}
  body{background:#fff;padding:0;font-size:12px}
  nav.tabs{display:none}
  .page{border:0;margin:0;break-after:page}
  .inner{padding:16px 0 0}
  .band{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  section[hidden]{display:block!important}
  .tile,.flag,.verdict,.callout,.steps li,.qlist li,tr,.gloss dd,.gloss dt{break-inside:avoid}
  h2,h3{break-after:avoid}
  .tile{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  h1{font-size:28px}
}


.sitebar{background:#0b1218;color:#eaf3f7;font-family:"IBM Plex Sans Condensed",Arial,sans-serif;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 18px;flex-wrap:wrap}
.sitebar a.home{color:#eaf3f7;text-decoration:none;font-weight:700;letter-spacing:.04em}
.sitebar a.home b{color:#1FC2F0}
.sitebar .dl{background:#1FC2F0;color:#06202b;text-decoration:none;font-weight:700;font-size:13px;padding:8px 16px;border-radius:4px;letter-spacing:.02em}
.sitebar .dl:hover{filter:brightness(1.06)}
.sitefoot{max-width:900px;margin:0 auto;padding:8px 16px 40px;font-family:"IBM Plex Mono",Menlo,Consolas,monospace;font-size:11.5px;color:#7C8994}
.sitefoot a{color:#245F8F}
@media print{.sitebar,.sitefoot{display:none}}

/* utilities (moved from inline styles for CSP compliance) */
.u-m0{margin:0}
.u-m010{margin:0 0 10px}
.u-mb6{margin-bottom:6px}
.u-mt14{margin-top:14px}
.u-mt16{margin-top:16px}
.u-mt18{margin-top:18px}