/* MarketGames.us — fintech-meets-game design system */
:root{
  --bg:#0a0e1a;--bg2:#0e1424;--panel:#121a2e;--panel2:#16203a;
  --ink:#e8edf7;--mut:#94a3c4;--dim:#5d6b8f;
  --line:#1e2a45;--line2:#2a3a5e;
  --up:#1ed783;--up2:#0fae6a;--down:#ff5c72;--down2:#e0394f;
  --gold:#ffce4d;--gold2:#f5b417;
  --acc:#5b8cff;--acc2:#3a6dff;--vio:#9d7bff;
  --glow:0 0 0 1px rgba(91,140,255,.25),0 8px 40px rgba(8,12,28,.6);
  --r:16px;--rs:10px;
  --mx:1180px;
  --grad:linear-gradient(135deg,#5b8cff,#9d7bff 55%,#1ed783);
  --grad-up:linear-gradient(135deg,#1ed783,#0fae6a);
  --grad-gold:linear-gradient(135deg,#ffce4d,#f5b417);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:
    radial-gradient(1200px 600px at 80% -10%,rgba(91,140,255,.10),transparent 60%),
    radial-gradient(900px 500px at -10% 10%,rgba(157,123,255,.08),transparent 55%),
    var(--bg);
  color:var(--ink);
  font:16px/1.65 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;letter-spacing:.1px;
}
h1,h2,h3,h4{line-height:1.18;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.5rem,3.2vw,2.2rem);font-weight:800}
h3{font-size:1.22rem;font-weight:700}
p{margin:0 0 1rem;color:var(--mut)}
a{color:var(--acc);text-decoration:none}
a:hover{color:#9bb6ff}
.wrap{max-width:var(--mx);margin:0 auto;padding:0 20px}
.mono{font-family:'JetBrains Mono','SF Mono',ui-monospace,'Cascadia Code',Menlo,monospace}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ===== Header ===== */
header.site{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(10,14,26,.78);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.18rem;color:var(--ink);letter-spacing:-.02em}
.brand .logo{width:34px;height:34px;border-radius:9px;background:var(--grad);
  display:grid;place-items:center;box-shadow:0 4px 18px rgba(91,140,255,.4);position:relative;overflow:hidden}
.brand .logo svg{width:20px;height:20px}
.nav nav{margin-left:auto;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.nav nav a{color:var(--mut);font-size:.93rem;font-weight:600;padding:8px 12px;border-radius:9px;transition:.18s}
.nav nav a:hover{color:var(--ink);background:var(--panel)}
.nav .cta{background:var(--grad);color:#fff!important;box-shadow:0 4px 16px rgba(91,140,255,.35)}
.nav .cta:hover{filter:brightness(1.08)}
.burger{display:none;margin-left:auto;background:var(--panel);border:1px solid var(--line2);color:var(--ink);
  width:42px;height:42px;border-radius:10px;font-size:1.2rem;cursor:pointer}
@media(max-width:860px){
  .nav nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;
    background:var(--bg2);border-bottom:1px solid var(--line);padding:10px 16px;gap:2px}
  .nav nav.open{display:flex}
  .nav nav a{padding:11px 12px}
  .burger{display:block}
}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:.98rem;
  padding:13px 22px;border-radius:12px;cursor:pointer;border:0;transition:.18s;text-decoration:none}
.btn-p{background:var(--grad);color:#fff;box-shadow:0 6px 24px rgba(91,140,255,.4)}
.btn-p:hover{transform:translateY(-2px);filter:brightness(1.07);color:#fff}
.btn-g{background:var(--grad-up);color:#04210f;box-shadow:0 6px 24px rgba(30,215,131,.32)}
.btn-g:hover{transform:translateY(-2px);color:#04210f}
.btn-o{background:var(--panel);color:var(--ink);border:1px solid var(--line2)}
.btn-o:hover{border-color:var(--acc);color:#fff}
.btn-gold{background:var(--grad-gold);color:#2a1d00}
.btn-gold:hover{transform:translateY(-2px);color:#2a1d00}

/* ===== Hero ===== */
.hero{position:relative;padding:74px 0 56px;overflow:hidden}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--acc);background:rgba(91,140,255,.1);
  border:1px solid rgba(91,140,255,.25);padding:7px 14px;border-radius:99px;margin-bottom:22px}
.hero .dot{width:7px;height:7px;border-radius:50%;background:var(--up);box-shadow:0 0 10px var(--up);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero p.lead{font-size:1.16rem;max-width:620px;color:var(--mut)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap;margin-top:40px;padding-top:30px;border-top:1px solid var(--line)}
.hero-stats .s b{display:block;font-size:1.7rem;font-weight:800;color:var(--ink)}
.hero-stats .s span{font-size:.85rem;color:var(--dim)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:34px}}

/* ===== Cards / sections ===== */
section{padding:56px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 44px}
.sec-head .kick{font-size:.82rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--vio)}
.sec-head p{font-size:1.05rem}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:linear-gradient(180deg,var(--panel),var(--bg2));border:1px solid var(--line);
  border-radius:var(--r);padding:26px;transition:.2s;position:relative;overflow:hidden}
.card:hover{border-color:var(--line2);transform:translateY(-3px);box-shadow:var(--glow)}
.card .ico{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(91,140,255,.12);border:1px solid rgba(91,140,255,.2)}
.card .ico svg{width:24px;height:24px;stroke:var(--acc)}
.card h3{margin-bottom:.4em}
.card p{font-size:.95rem;margin:0}

/* game feature cards */
.gamecard{display:flex;flex-direction:column;background:linear-gradient(180deg,var(--panel2),var(--bg2));
  border:1px solid var(--line2);border-radius:20px;overflow:hidden;transition:.2s}
.gamecard:hover{transform:translateY(-4px);box-shadow:var(--glow);border-color:var(--acc)}
.gamecard .top{padding:28px;background:radial-gradient(400px 200px at 80% 0,rgba(91,140,255,.14),transparent)}
.gamecard .badge{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  padding:5px 11px;border-radius:99px;margin-bottom:14px}
.badge-up{background:rgba(30,215,131,.14);color:var(--up);border:1px solid rgba(30,215,131,.3)}
.badge-vio{background:rgba(157,123,255,.14);color:var(--vio);border:1px solid rgba(157,123,255,.3)}
.gamecard .ft{display:flex;gap:16px;flex-wrap:wrap;margin:16px 0;font-size:.85rem;color:var(--dim)}
.gamecard .ft span{display:inline-flex;gap:6px;align-items:center}
.gamecard .bot{margin-top:auto;padding:0 28px 28px}

/* ===== Prose ===== */
.prose{max-width:780px;margin:0 auto}
.prose h2{margin-top:2.2em}
.prose h3{margin-top:1.6em;color:var(--ink)}
.prose p,.prose li{color:var(--mut);font-size:1.04rem}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin:.4em 0}
.prose strong{color:var(--ink)}
.prose blockquote{border-left:3px solid var(--acc);margin:1.5em 0;padding:.6em 1.2em;
  background:var(--panel);border-radius:0 10px 10px 0;color:var(--mut)}
.prose a{border-bottom:1px solid rgba(91,140,255,.3)}
.callout{background:linear-gradient(135deg,rgba(91,140,255,.08),rgba(157,123,255,.06));
  border:1px solid rgba(91,140,255,.22);border-radius:14px;padding:20px 22px;margin:1.8em 0}
.callout.warn{background:rgba(255,206,77,.07);border-color:rgba(255,206,77,.28)}
.callout p{margin:0;color:var(--mut)}
.callout strong{color:var(--gold)}

/* ===== Breadcrumb ===== */
.crumb{font-size:.85rem;color:var(--dim);padding:18px 0 0}
.crumb a{color:var(--mut)}
.crumb a:hover{color:var(--ink)}

/* ===== FAQ ===== */
.faq{max-width:780px;margin:0 auto}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq summary{padding:18px 22px;cursor:pointer;font-weight:700;color:var(--ink);list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--acc);font-size:1.4rem;transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 22px 20px;margin:0;color:var(--mut)}

/* ===== Table ===== */
.tbl{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.95rem}
.tbl th,.tbl td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
.tbl th{color:var(--ink);font-weight:700;background:var(--panel);font-size:.85rem;text-transform:uppercase;letter-spacing:.04em}
.tbl td{color:var(--mut)}
.tbl tr:hover td{background:rgba(91,140,255,.04)}

/* ===== Footer ===== */
footer.site{border-top:1px solid var(--line);background:var(--bg2);padding:50px 0 30px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
footer.site h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--dim);margin-bottom:14px}
footer.site a{display:block;color:var(--mut);font-size:.92rem;padding:5px 0}
footer.site a:hover{color:var(--ink)}
.foot-bot{margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--dim);font-size:.85rem}
.disclaimer{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:14px 18px;
  font-size:.82rem;color:var(--dim);margin-top:20px}

/* ===== Game UI shared ===== */
.panel{background:linear-gradient(180deg,var(--panel),var(--bg2));border:1px solid var(--line2);border-radius:var(--r);padding:22px}
.gameboard{display:grid;gap:22px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:680px){.stat-row{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:15px 16px}
.stat .lab{font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--dim);margin-bottom:5px}
.stat .val{font-size:1.5rem;font-weight:800;font-family:'JetBrains Mono',monospace}
.pos{color:var(--up)}.neg{color:var(--down)}
.tick-up{color:var(--up)}.tick-down{color:var(--down)}
input,select{background:var(--bg2);border:1px solid var(--line2);color:var(--ink);border-radius:10px;
  padding:11px 13px;font:inherit;font-size:.95rem;width:100%}
input:focus,select:focus{outline:none;border-color:var(--acc)}
label{display:block;font-size:.8rem;color:var(--mut);margin-bottom:6px;font-weight:600}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--panel2);border:1px solid var(--line2);border-radius:12px;padding:13px 20px;
  font-weight:600;font-size:.92rem;opacity:0;pointer-events:none;transition:.3s;z-index:90;box-shadow:var(--glow)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.ok{border-color:var(--up2);color:var(--up)}
.toast.err{border-color:var(--down2);color:var(--down)}
canvas{display:block;width:100%;border-radius:12px}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}
@media(max-width:680px){.related{grid-template-columns:1fr}}
.related a{display:block;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;color:var(--ink);font-weight:600;transition:.18s}
.related a:hover{border-color:var(--acc);transform:translateY(-2px)}
.related a span{display:block;font-size:.84rem;color:var(--dim);font-weight:400;margin-top:3px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 0}
.chip{background:var(--panel);border:1px solid var(--line2);border-radius:99px;padding:6px 14px;font-size:.84rem;color:var(--mut);font-weight:600;cursor:pointer;transition:.15s}
.chip:hover,.chip.active{border-color:var(--acc);color:var(--ink);background:rgba(91,140,255,.1)}