/* T20 Exchange — shared shell: tokens, header, footer, common blocks.
   Page-specific rules stay in each page's own <style>. */

:root{
  --bg:#070d1a;
  --bg-2:#0c1526;
  --panel:#111c31;
  --panel-2:#16223a;
  --line:#22314f;
  --gold:#f5c518;
  --gold-dim:#c99f0d;
  --green:#22b14c;
  --blue:#1f6fe0;
  --txt:#e8eefb;
  --txt-dim:#9db0cf;
  --radius:14px;
  --wrap:1140px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font-family:"Segoe UI",Roboto,system-ui,-apple-system,sans-serif;
  font-size:17px;line-height:1.75;overflow-x:hidden;
  -webkit-text-size-adjust:100%;
}
img{max-width:100%;height:auto}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;margin:0 0 14px;font-weight:800;letter-spacing:-.2px}
h1{font-size:2.15rem}
h2{font-size:1.62rem}
h3{font-size:1.2rem}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:22px}
li{margin-bottom:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 18px}

.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--gold);color:#10182b;
  padding:10px 16px;font-weight:700;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:100;background:rgba(7,13,26,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.head-row{max-width:var(--wrap);margin:0 auto;padding:10px 18px;
  display:flex;align-items:center;gap:14px;position:relative}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{width:132px;height:74px;object-fit:contain}
.nav-links{display:flex;gap:20px;margin-left:auto;align-items:center}
.nav-links a{color:var(--txt-dim);font-size:.92rem;font-weight:600;white-space:nowrap}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--gold);text-decoration:none}
.head-cta{background:linear-gradient(135deg,var(--gold),#ffdc5e);color:#10182b;font-weight:800;
  padding:10px 18px;border-radius:30px;font-size:.9rem;white-space:nowrap}
.head-cta:hover{text-decoration:none;filter:brightness(1.07)}
.burger{display:none;margin-left:auto;background:transparent;border:1px solid var(--line);
  color:var(--txt);border-radius:9px;padding:8px 11px;font-size:1.15rem;cursor:pointer;line-height:1}

@media(max-width:900px){
  .burger{display:block}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--bg-2);border-bottom:1px solid var(--line);
    padding:6px 18px 16px;display:none
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 2px;border-bottom:1px solid rgba(34,49,79,.6);font-size:.98rem}
  .nav-links .head-cta{text-align:center;margin-top:12px;border-bottom:none}
}

/* ---------- shared blocks ---------- */
main{display:block}
.crumb{font-size:.83rem;color:var(--txt-dim);padding:16px 0 4px}
.crumb a{color:var(--txt-dim)}
.crumb a:hover{color:var(--gold)}

.btn{display:inline-block;background:linear-gradient(135deg,var(--gold),#ffe06a);color:#10182b;
  font-weight:800;padding:14px 30px;border-radius:34px;box-shadow:0 10px 26px rgba(245,197,24,.22)}
.btn:hover{text-decoration:none;filter:brightness(1.07)}
.btn-ghost{display:inline-block;border:1px solid var(--gold);color:var(--gold);font-weight:700;
  padding:12px 26px;border-radius:34px}
.btn-ghost:hover{text-decoration:none;background:rgba(245,197,24,.1)}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}

table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:.94rem}
.table-scroll{overflow-x:auto;margin-bottom:20px}
th,td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
th{background:var(--panel-2);color:var(--gold);font-weight:700}
td{background:rgba(17,28,49,.55)}

/* content image */
.shot{margin:26px auto;max-width:820px;width:100%}
.shot img{display:block;width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--line)}
.shot figcaption{margin-top:9px;font-size:.85rem;color:var(--txt-dim);text-align:center}

/* answer / quotable block */
.answer{border-left:4px solid var(--gold);background:rgba(245,197,24,.06);
  padding:14px 18px;border-radius:0 var(--radius) var(--radius) 0;margin:0 0 22px}
.answer p:last-child{margin-bottom:0}

/* FAQ */
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:11px;
  margin-bottom:11px;padding:0 16px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;font-size:1.02rem;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--gold);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 14px;color:var(--txt-dim)}

/* SEO box */
.seo-box{max-height:330px;overflow-y:auto;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 22px;margin:34px 0;font-size:.93rem;color:var(--txt-dim)}
.seo-box h2{font-size:1.24rem;color:var(--txt)}
.seo-box h3{font-size:1.02rem;color:var(--gold);margin-top:16px}

/* People also search for */
.also-search{margin:26px 0 40px}
.also-search h2{font-size:1.18rem}
.tags{display:flex;flex-wrap:wrap;gap:9px;padding:0;list-style:none}
.tags li{background:var(--panel);border:1px solid var(--line);border-radius:30px;
  padding:7px 15px;font-size:.85rem;color:var(--txt-dim);margin:0}

/* ---------- footer ---------- */
.site-foot{background:var(--bg-2);border-top:1px solid var(--line);padding:38px 0 26px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px;max-width:var(--wrap);
  margin:0 auto;padding:0 18px}
@media(max-width:1000px) and (min-width:761px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid img{width:150px;height:84px;object-fit:contain;margin-bottom:8px}
.foot-grid h3{font-size:1rem;color:var(--gold)}
.foot-grid ul{list-style:none;padding:0}
.foot-grid a{color:var(--txt-dim);font-size:.9rem}
.foot-grid a:hover{color:var(--gold)}
.foot-grid p{font-size:.88rem;color:var(--txt-dim)}
.foot-bottom{max-width:var(--wrap);margin:26px auto 0;padding:18px 18px 0;border-top:1px solid var(--line);
  font-size:.82rem;color:#6f829f;text-align:center}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr;gap:22px}}

/* WhatsApp float */
.wa-float{position:fixed;right:18px;bottom:18px;width:60px;height:60px;border-radius:50%;
  background:#25D366;display:flex;align-items:center;justify-content:center;z-index:120;
  box-shadow:0 8px 22px rgba(37,211,102,.4);animation:wapulse 2.2s infinite}
.wa-float svg{width:34px;height:34px;fill:#fff}
@keyframes wapulse{
  0%{box-shadow:0 0 0 0 rgba(37,211,102,.55)}
  70%{box-shadow:0 0 0 18px rgba(37,211,102,0)}
  100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}
}

@media(max-width:640px){
  body{font-size:16px}
  h1{font-size:1.72rem}
  h2{font-size:1.36rem}
  .brand img{width:112px;height:63px}
}