/* Shared by every page: colour tokens, type, the site header, buttons and the footer. */
html{-webkit-text-size-adjust:100%}
:root{
  --paper:#efefea; --surface:#f8f8f5; --ink:#15171a; --muted:#5f636a; --line:#d4d5ce;
  --blue:#2337c6; --blue-ink:#f3f3ee; --blue-soft:#dfe3fb; --panel:#15171a; --panel-ink:#efefea;
  --accent:#2337c6;
  --f-display:"Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --shadow:0 1px 2px rgba(21,23,26,.06),0 12px 32px -12px rgba(21,23,26,.22);
  --grid:linear-gradient(rgba(255,255,255,.075) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.075) 1px,transparent 1px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#101215; --surface:#171a1e; --ink:#e9eae6; --muted:#9a9ea6; --line:#2a2e34;
  --blue:#2337c6; --blue-ink:#f3f3ee; --blue-soft:#1d2448; --panel:#07080a; --panel-ink:#e9eae6;
  --accent:#9aabff; --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px -14px rgba(0,0,0,.7); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#101215; --surface:#171a1e; --ink:#e9eae6; --muted:#9a9ea6; --line:#2a2e34;
  --blue:#2337c6; --blue-ink:#f3f3ee; --blue-soft:#1d2448; --panel:#07080a; --panel-ink:#e9eae6;
  --accent:#9aabff; --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px -14px rgba(0,0,0,.7); color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--paper);color:var(--ink);font:16px/1.6 var(--f-body);margin:0}
a{color:var(--accent);text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
h1,h2,h3,h4{font-family:var(--f-display);text-wrap:balance;margin:0}
p{margin:0}
.mono{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.wrap{max-width:1120px;margin:0 auto;padding-inline:20px}

/* blue blueprint surface */
.blueprint{background:var(--blue);color:var(--blue-ink);background-image:var(--grid);background-size:56px 56px;background-position:-1px -1px}
.blueprint a:focus-visible,.blueprint button:focus-visible,.blueprint input:focus-visible{outline-color:#fff}

/* ---------- site header (sits on the blue cover) ---------- */
.site-head{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-block:18px;border-bottom:1px solid rgba(243,243,238,.22)}
.site-head .brand{display:flex;align-items:center;gap:10px;color:var(--blue-ink);text-decoration:none;font-family:var(--f-display);font-weight:800;font-stretch:75%;font-size:20px;text-transform:uppercase;letter-spacing:.01em}
.site-head .brand img{width:30px;height:30px;border-radius:50%;object-fit:cover;border:1.5px solid rgba(243,243,238,.6)}
.site-head nav{display:flex;gap:4px;flex-wrap:wrap}
.site-head nav a{color:rgba(243,243,238,.85);text-decoration:none;padding:6px 10px;border-radius:999px}
.site-head nav a:hover{background:rgba(255,255,255,.12);color:#fff}
.site-head nav a[aria-current="page"]{color:#fff;box-shadow:inset 0 0 0 1px rgba(243,243,238,.5)}
@media (max-width:420px){.site-head .brand span{display:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 15px/1 var(--f-body);padding:14px 20px;border-radius:999px;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:transform .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-light{background:var(--blue-ink);color:var(--blue)}
.btn-ghost{background:transparent;color:var(--blue-ink);border-color:rgba(243,243,238,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-blue{background:var(--blue);color:#fff}

/* ---------- footer ---------- */
footer{margin-top:72px;background:var(--panel);color:var(--panel-ink)}
footer .wrap{padding-block:48px;display:grid;gap:14px}
footer .big{font-family:var(--f-display);font-weight:900;font-stretch:62%;font-size:clamp(44px,7vw,84px);line-height:.9;text-transform:uppercase}
footer .row{display:flex;flex-wrap:wrap;gap:8px 28px;color:rgba(239,239,234,.8)}
footer .row a{color:inherit}

@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
@media (prefers-reduced-motion:reduce){.btn{transition:none}.btn:hover{transform:none}}
[hidden]{display:none!important}