/* Shared styles for InvestApps.in /learn articles. Served as a static file. */
:root{
  --bg:#080D1A; --bg2:#0C1526; --surface:#0F1B2E; --border:rgba(255,255,255,0.09);
  --ink:#EAF1F8; --ink2:#AEBED0; --ink3:#8496AB;
  --teal:#2DD4BF; --tealD:#0D9488; --gold:#E7BD5A;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);color:var(--ink2);
  font-family:'DM Sans',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased;
}
a{color:var(--teal);text-decoration:none;}
a:hover{text-decoration:underline;}

/* nav */
.nav{border-bottom:1px solid var(--border);background:rgba(8,13,26,0.9);position:sticky;top:0;z-index:10;backdrop-filter:blur(8px);}
.nav-in{max-width:1120px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;}
.brand img{width:28px;height:28px;border-radius:50%;}
.nav-cta{background:linear-gradient(135deg,var(--tealD),var(--teal));color:#04201d;font-weight:700;padding:8px 16px;border-radius:999px;font-size:14px;}
.nav-cta:hover{text-decoration:none;filter:brightness(1.05);}

/* layout */
.wrap{max-width:760px;margin:0 auto;padding:0 20px;}
.crumb{font-size:13.5px;color:var(--ink3);margin:26px 0 10px;}
.crumb a{color:var(--ink3);}
.crumb a:hover{color:var(--teal);}
article{padding:8px 0 40px;}
.eyebrow{color:var(--teal);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;}
h1{color:var(--ink);font-size:38px;line-height:1.15;font-weight:800;letter-spacing:-0.5px;margin:10px 0 14px;}
.meta{color:var(--ink3);font-size:14px;margin-bottom:26px;}
.lede{font-size:20px;color:var(--ink);line-height:1.6;margin:0 0 28px;}
article h2{color:var(--ink);font-size:26px;font-weight:800;letter-spacing:-0.3px;margin:38px 0 12px;}
article h3{color:var(--ink);font-size:20px;font-weight:700;margin:26px 0 8px;}
article p{margin:0 0 16px;}
article ul,article ol{margin:0 0 16px;padding-left:22px;}
article li{margin:0 0 8px;}
article strong{color:var(--ink);}

/* callout */
.callout{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--teal);
  border-radius:10px;padding:16px 18px;margin:22px 0;font-size:16px;}
.callout.gold{border-left-color:var(--gold);}
.callout b{color:var(--ink);}

/* key-terms / stat row */
.kv{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0;}
.kv .card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px;}
.kv .card .t{color:var(--teal);font-weight:700;font-size:14px;margin-bottom:4px;}
.kv .card .d{font-size:15px;}

/* CTA */
.cta-box{background:linear-gradient(160deg,rgba(13,148,136,0.14),rgba(15,27,46,0.6));
  border:1px solid rgba(45,212,191,0.3);border-radius:16px;padding:26px 24px;margin:34px 0;text-align:center;}
.cta-box h3{color:var(--ink);font-size:22px;margin:0 0 8px;}
.cta-box p{margin:0 0 16px;color:var(--ink2);}
.btn{display:inline-block;background:linear-gradient(135deg,var(--tealD),var(--teal));color:#04201d;
  font-weight:800;padding:12px 24px;border-radius:999px;font-size:16px;}
.btn:hover{text-decoration:none;filter:brightness(1.05);}

/* FAQ */
.faq{margin:34px 0;}
.faq h2{margin-bottom:14px;}
details{border:1px solid var(--border);border-radius:12px;background:rgba(255,255,255,0.02);margin:0 0 12px;padding:0 18px;}
details[open]{border-color:rgba(45,212,191,0.35);}
summary{list-style:none;cursor:pointer;color:var(--ink);font-weight:700;font-size:17px;padding:16px 28px 16px 0;position:relative;}
summary::-webkit-details-marker{display:none;}
summary::after{content:"+";position:absolute;right:2px;top:13px;font-size:24px;font-weight:400;color:var(--teal);}
details[open] summary::after{content:"\2212";}
details p{padding:0 0 16px;margin:0;font-size:16px;}

/* related */
.related{border-top:1px solid var(--border);margin-top:34px;padding-top:22px;}
.related h2{font-size:20px;margin-bottom:12px;}
.related a{display:block;padding:6px 0;}

/* footer */
footer{border-top:1px solid var(--border);margin-top:40px;background:var(--bg2);}
.foot-in{max-width:760px;margin:0 auto;padding:26px 20px 40px;font-size:13px;color:var(--ink3);}
.foot-in .disc{margin:0 0 14px;line-height:1.6;}
.foot-in .disc b{color:var(--ink2);}
.foot-links{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:12px;}
.foot-links a{color:var(--ink3);}

@media (max-width:640px){
  h1{font-size:30px;} .lede{font-size:18px;} article h2{font-size:22px;}
  body{font-size:16px;} .kv{grid-template-columns:1fr;}
}