/* Vertex Digital Labs LLC — desert-dusk lab palette */
:root{
  --paper:#F2F3F7; --paper-2:#E7E9F1; --edge:#D3D7E5;
  --ink:#191B28; --ink-2:#464C66; --mist:#8D94B2;
  --iris:#4F4FCC; --dawn:#C97A62;
  --sp:clamp(1.25rem,4vw,2.5rem);
  --measure:66ch;
}
:root:not([data-theme="light"]){ }
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#101220; --paper-2:#191C2C; --edge:#2A2F45;
    --ink:#EDEFF7; --ink-2:#AFB6D0; --mist:#6A7193;
    --iris:#9A9AF5; --dawn:#E3A48E;
  }
}
:root[data-theme="dark"]{
  --paper:#101220; --paper-2:#191C2C; --edge:#2A2F45;
  --ink:#EDEFF7; --ink-2:#AFB6D0; --mist:#6A7193;
  --iris:#9A9AF5; --dawn:#E3A48E;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:clamp(1rem,.96rem + .2vw,1.075rem); line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:74rem;margin-inline:auto;padding-inline:var(--sp)}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--iris);outline-offset:3px;border-radius:2px}

/* ---- masthead ---- */
.mast{border-bottom:1px solid var(--edge);position:sticky;top:0;z-index:20;
  background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px)}
.mast .wrap{display:flex;align-items:center;gap:1.5rem;min-height:4.25rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-weight:600;letter-spacing:-.01em;margin-right:auto}
.brand .glyph{width:1.15rem;height:1.15rem;flex:none;display:grid;grid-template:repeat(2,1fr)/repeat(2,1fr);gap:2px}
.brand .glyph i{background:var(--mist);border-radius:1px}
.brand .glyph i:nth-child(1){background:var(--iris)}
.brand .glyph i:nth-child(4){background:var(--dawn)}
.nav{display:flex;gap:1.4rem;font-size:.9rem}
.nav a{text-decoration:none;color:var(--ink-2);padding-block:.2rem;border-bottom:1px solid transparent}
.nav a:hover{color:var(--ink);border-bottom-color:var(--iris)}
.nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--iris)}

/* ---- hero ---- */
.hero{padding-block:clamp(3rem,9vw,6.5rem) clamp(2.5rem,7vw,5rem);position:relative;overflow:hidden}
.eyebrow{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.72rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);margin:0 0 1.4rem}
.hero h1{font-family:Newsreader,Georgia,serif;font-weight:400;font-size:clamp(2.4rem,1.3rem + 4.6vw,4.75rem);
  line-height:1.04;letter-spacing:-.022em;margin:0 0 1.3rem;max-width:16ch}
.hero h1 em{font-style:italic;color:var(--iris)}
.lede{font-size:clamp(1.08rem,1rem + .45vw,1.32rem);color:var(--ink-2);max-width:52ch;margin:0;line-height:1.55}

/* signature: field of days */
.field{margin-top:clamp(2.5rem,6vw,4rem);display:grid;
  grid-template-columns:repeat(auto-fill,minmax(13px,1fr));gap:6px;max-width:44rem}
.field span{aspect-ratio:1;border-radius:50%;background:var(--mist);opacity:.16;
  animation:breathe 7s ease-in-out infinite}
.field span.lit{background:var(--iris);opacity:.85}
.field span.warm{background:var(--dawn);opacity:.8}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.32)}}
.field-note{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.72rem;color:var(--mist);
  margin:.9rem 0 0;letter-spacing:.04em}
@media (prefers-reduced-motion:reduce){.field span{animation:none}}

/* ---- sections ---- */
.band{padding-block:clamp(2.75rem,7vw,4.75rem);border-top:1px solid var(--edge)}
.band > .wrap{display:grid;grid-template-columns:minmax(0,15rem) minmax(0,1fr);gap:clamp(1.25rem,4vw,3.5rem)}
@media (max-width:52rem){.band > .wrap{grid-template-columns:1fr;gap:1.1rem}}
.band h2{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.74rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);font-weight:500;margin:.4rem 0 0}
.prose{max-width:var(--measure)}
.prose > :first-child{margin-top:0}
.prose > :last-child{margin-bottom:0}
.prose p{margin:0 0 1.1rem}
.prose h3{font-family:Newsreader,Georgia,serif;font-weight:500;font-size:1.45rem;line-height:1.25;
  letter-spacing:-.012em;margin:2.2rem 0 .55rem}
.prose h4{font-size:1rem;font-weight:600;margin:1.7rem 0 .4rem;letter-spacing:-.005em}
.prose ul,.prose ol{margin:0 0 1.1rem;padding-left:1.15rem}
.prose li{margin-bottom:.4rem}
.prose a{color:var(--iris);text-underline-offset:.18em}
.big{font-family:Newsreader,Georgia,serif;font-weight:400;font-size:clamp(1.3rem,1.1rem + .9vw,1.75rem);
  line-height:1.38;letter-spacing:-.014em;color:var(--ink);margin:0 0 1.2rem}
.hr{height:1px;background:var(--edge);border:0;margin:2rem 0}

/* ---- registry table: institutional data, set in mono ---- */
.registry{width:100%;border-collapse:collapse;font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.845rem;line-height:1.55}
.registry th{text-align:left;font-weight:400;color:var(--mist);padding:.7rem 1.5rem .7rem 0;
  vertical-align:top;white-space:nowrap;border-bottom:1px solid var(--edge);width:1%}
.registry td{padding:.7rem 0;vertical-align:top;border-bottom:1px solid var(--edge);color:var(--ink)}
.registry tr:last-child th,.registry tr:last-child td{border-bottom:0}
.registry td .mut{color:var(--ink-2)}

/* ---- feature list ---- */
.feats{display:grid;gap:1.6rem;margin:0}
.feats div{border-left:2px solid var(--edge);padding-left:1.1rem}
.feats div:nth-child(3n+1){border-left-color:var(--iris)}
.feats div:nth-child(3n+2){border-left-color:var(--dawn)}
.feats dt{font-weight:600;margin-bottom:.25rem}
.feats dd{margin:0;color:var(--ink-2)}

/* ---- callout ---- */
.note{background:var(--paper-2);border:1px solid var(--edge);border-radius:3px;
  padding:1.15rem 1.3rem;margin:0 0 1.2rem}
.note p{margin:0}
.note.warn{border-left:3px solid var(--dawn)}

/* ---- contact ---- */
.mail{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:clamp(.95rem,.9rem + .35vw,1.15rem);
  color:var(--iris);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--iris) 40%,transparent);
  word-break:break-all}
.mail:hover{border-bottom-color:var(--iris)}

/* ---- footer ---- */
.foot{border-top:1px solid var(--edge);padding-block:clamp(2.25rem,5vw,3.25rem);margin-top:1rem;
  background:var(--paper-2)}
.foot .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:2rem}
.foot h3{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.7rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);font-weight:500;margin:0 0 .8rem}
.foot address{font-style:normal;font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.82rem;line-height:1.7;color:var(--ink-2)}
.foot ul{list-style:none;margin:0;padding:0;font-size:.9rem;line-height:2}
.foot a{color:var(--ink-2);text-decoration:none}
.foot a:hover{color:var(--ink)}
.foot .fine{grid-column:1/-1;border-top:1px solid var(--edge);padding-top:1.25rem;
  font-size:.78rem;color:var(--mist);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--sp);top:.5rem;position:absolute;z-index:50;background:var(--paper);
  padding:.5rem .8rem;border:1px solid var(--iris);border-radius:3px}