/* ==========================================================================
   Nubank Investor — shared site styles
   Tokens, header/nav, page heading, and footer used by every document page.
   Page-specific layout stays in each page's own <style> block.
   Pages can override the content width with:  :root{--page-w:900px}
   Palette: deep violet on cool lilac-tinted paper. Variable names kept from
   the original system (--ocean = primary accent) so page styles port cleanly.
   ========================================================================== */

:root{
  --ink:#221a30;
  --ink-soft:#4a4160;
  --muted:#6f6885;
  --line:#e4dfec;
  --paper:#faf8fd;
  --card:#ffffff;
  --ocean:#6d28d9;
  --ocean-deep:#4a1d96;
  --sand:#a78bfa;
  --gold:#7c3aed;
  --pill-bg:#f1edf9;
  --shadow:0 1px 2px rgba(34,26,48,.04),0 12px 30px rgba(34,26,48,.06);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --page-w:1080px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.65;-webkit-font-smoothing:antialiased;}
a{color:var(--ocean);text-decoration:none;}
a:hover{text-decoration:underline;}

/* ---------- Header ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(250,248,253,.88);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);}
.nav{max-width:1080px;margin:0 auto;padding:0 28px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{font-family:var(--serif);font-size:18px;font-weight:600;letter-spacing:2.2px;color:var(--ink);text-decoration:none;display:inline-flex;align-items:center;gap:10px;margin-right:8px;white-space:nowrap;}
.brand:hover{color:var(--ocean);text-decoration:none;}
.brand-logo{height:46px;width:auto;display:block;transition:opacity .15s;}
.brand:hover .brand-logo{opacity:.82;}
.brand .mark{width:26px;height:26px;border-radius:50%;background:radial-gradient(circle at 30% 30%,var(--ocean),var(--ocean-deep));display:inline-block;flex:none;}
.brand .sub-mark{color:var(--gold);}
nav.links{display:flex;gap:26px;}
nav.links a{font-size:14.5px;color:var(--ink-soft);font-weight:500;letter-spacing:.2px;padding:6px 0;position:relative;white-space:nowrap;}
nav.links a.active{color:var(--ink);}
nav.links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--sand);border-radius:2px;}
nav.links a:hover{color:var(--ocean);text-decoration:none;}
.menu-btn{display:none;background:none;border:0;font-size:22px;cursor:pointer;color:var(--ink);}

/* ---------- Page heading ---------- */
.pagehead{max-width:var(--page-w);margin:0 auto;padding:54px 28px 20px;}
.eyebrow{font-size:12.5px;letter-spacing:2.2px;text-transform:uppercase;color:var(--gold);font-weight:700;margin-bottom:14px;}
.pagehead h1{font-family:var(--serif);font-weight:600;font-size:42px;line-height:1.1;margin:0 0 12px;letter-spacing:-.4px;}
.pagehead p.lede{font-size:17px;color:var(--ink-soft);margin:0;}
.divider{max-width:var(--page-w);margin:34px auto 0;padding:0 28px;}
.divider hr{border:0;border-top:1px solid var(--line);margin:0;}

/* ---------- Footer ---------- */
footer.site{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:12.5px;}
footer.site a{color:var(--muted);}
.footer-inner{max-width:1080px;margin:0 auto;padding:0 28px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;}
.footer-logo{height:32px;width:auto;display:block;opacity:.92;}
.footer-brand{font-family:var(--serif);font-size:14px;font-weight:600;letter-spacing:2px;color:var(--ink-soft);}

/* ---------- Responsive nav ---------- */
@media(max-width:900px){
  nav.links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:var(--paper);border-bottom:1px solid var(--line);padding:8px 0;}
  nav.links.open{display:flex;}
  nav.links a{padding:13px 28px;}
  .menu-btn{display:block;}
}
@media(max-width:720px){
  .pagehead h1{font-size:32px;}
}