/* qtc.dev — design system. Palette shared with the qtc.events explorer. */
:root{
  --bg:#f6f7f9;--bg2:#ffffff;--fg:#1a1d21;--mute:#6b7280;--line:#e3e6ea;--soft:#eceff3;--soft2:#f1f3f6;
  --accent:#1f5fbf;--accent2:#174a99;--ink:#1a1d21;--ok:#14532d;--okbg:#dcfce7;--warn:#8a4b00;--warnbg:#fff4e0;
  --blue:#4b8fd6;--blue2:#8fbce6;--gold:#c2842f;--gold2:#e0a24a;--green:#2f8f5b;--green2:#86c9a5;--pq:#e6f0ff;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px -12px rgba(16,24,40,.18);
  --radius:12px;--radius-sm:8px;--maxw:1120px;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0f1216;--bg2:#171b21;--fg:#e6e8eb;--mute:#9aa3ad;--line:#2a3039;--soft:#141820;--soft2:#1b2028;
  --accent:#7fb0ff;--accent2:#a3c6ff;--ink:#e6e8eb;--ok:#86efac;--okbg:#14301f;--warn:#ffd28a;--warnbg:#3a2a10;
  --blue:#6fa5e6;--blue2:#4a78b8;--gold:#e0a24a;--gold2:#c2842f;--green:#5bbf8a;--green2:#2f8f5b;--pq:#1c2a44;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -12px rgba(0,0,0,.6);
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent2);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{line-height:1.15;letter-spacing:-.015em;margin:0;font-weight:700;text-wrap:balance}
h1{font-size:clamp(2.1rem,4.4vw,3.4rem);font-weight:800;letter-spacing:-.025em}
h2{font-size:clamp(1.5rem,2.4vw,2rem)}
h3{font-size:1.1rem;font-weight:650;margin:1.6rem 0 .5rem}
p{margin:.65rem 0;max-width:68ch}
ul{padding-left:1.2rem}li{margin:.3rem 0}
.mute{color:var(--mute)}.small{font-size:.9rem}.num{font-variant-numeric:tabular-nums}
code,pre,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
code{background:var(--soft);padding:.1em .4em;border-radius:5px;font-size:.88em;border:1px solid var(--line)}
pre{background:var(--ink);color:var(--bg);border-radius:var(--radius-sm);padding:16px 18px;overflow-x:auto;font-size:13.5px;line-height:1.55;margin:14px 0;box-shadow:var(--shadow)}
pre code{background:none;border:0;padding:0;font-size:inherit;color:inherit}
@media (prefers-color-scheme:dark){pre{background:#0b0e12;color:#dfe3e8;border:1px solid var(--line)}}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
/* nav */
nav.top{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg2) 92%,transparent);backdrop-filter:saturate(1.3) blur(12px);border-bottom:1px solid var(--line)}
nav.top .wrap{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand .q{width:32px;height:32px;border-radius:9px;background:var(--ink);color:var(--accent);display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:0}
.brand b{font-weight:750;font-size:1.05rem;letter-spacing:-.01em}.brand small{color:var(--mute);font-weight:500;margin-left:2px}
nav.top ul{display:flex;gap:2px;list-style:none;margin:0 0 0 auto;padding:0;align-items:center}
nav.top li a{display:block;padding:8px 12px;border-radius:8px;color:var(--fg);text-decoration:none;font-size:.92rem;font-weight:500;white-space:nowrap;opacity:.82}
nav.top li a:hover{background:var(--soft);opacity:1;text-decoration:none}
nav.top li a[aria-current=page]{background:var(--pq);color:var(--accent);opacity:1;font-weight:650}
nav.top .navcta{margin-left:8px}
.menubtn{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--bg2);color:var(--fg);cursor:pointer;align-items:center;justify-content:center;padding:0}
.menubtn span{display:block;width:18px;height:2px;background:currentColor;position:relative;transition:transform .2s}
.menubtn span::before,.menubtn span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform .2s,top .2s}
.menubtn span::before{top:-6px}.menubtn span::after{top:6px}
nav.top.open .menubtn span{background:transparent}
nav.top.open .menubtn span::before{top:0;transform:rotate(45deg)}nav.top.open .menubtn span::after{top:0;transform:rotate(-45deg)}
/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:10px;font-weight:600;text-decoration:none;border:1px solid var(--line);color:var(--fg);background:var(--bg2);font-size:.95rem;transition:transform .12s,box-shadow .12s,border-color .12s}
.btn:hover{text-decoration:none;border-color:color-mix(in srgb,var(--accent) 45%,var(--line));transform:translateY(-1px);box-shadow:var(--shadow);color:var(--fg)}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn.primary:hover{background:var(--accent2);border-color:var(--accent2);color:#fff}
.btn.small{padding:7px 12px;font-size:.85rem;border-radius:8px}
.btn .arr{opacity:.7}
/* eyebrow + status */
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.kicker .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px color-mix(in srgb,var(--green) 22%,transparent)}
.secno{font-size:.76rem;font-weight:700;letter-spacing:.14em;color:var(--accent);text-transform:uppercase;margin-bottom:12px;display:flex;align-items:center;gap:12px}
.secno::after{content:"";flex:1;height:1px;background:var(--line);max-width:80px}
.lede{font-size:1.18rem;line-height:1.6;color:var(--mute);max-width:60ch;margin-top:16px}
/* hero */
header.hero{position:relative;padding:76px 0 56px;border-bottom:1px solid var(--line);overflow:hidden;
  background:
    radial-gradient(900px 420px at 85% -10%,color-mix(in srgb,var(--accent) 16%,transparent),transparent 60%),
    linear-gradient(180deg,var(--soft2),var(--bg) 70%)}
header.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:48px 48px;opacity:.35;mask-image:radial-gradient(800px 500px at 70% 0%,#000 30%,transparent 80%);pointer-events:none}
header.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:48px;align-items:center}
@media(max-width:960px){header.hero .wrap{grid-template-columns:1fr;gap:32px}header.hero{padding:52px 0 40px}}
.hero h1{margin-top:16px;max-width:17ch}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.panel{background:var(--bg2);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.panel .ph{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--soft2);font-size:.8rem;color:var(--mute);letter-spacing:.06em;text-transform:uppercase;font-weight:650}
.panel .ph .live{display:inline-flex;align-items:center;gap:7px;text-transform:none;letter-spacing:0;font-weight:500}
.panel .ph .live i{width:7px;height:7px;border-radius:50%;background:var(--green)}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:0}
.stat{padding:18px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat:nth-child(2n){border-right:0}.stat:nth-last-child(-n+2){border-bottom:0}
.stat b{display:block;font-size:1.6rem;font-weight:750;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}
.stat span{display:block;font-size:.78rem;color:var(--mute);margin-top:6px;letter-spacing:.02em}
.panel .pf{padding:10px 16px;font-size:.78rem;color:var(--mute);border-top:1px solid var(--line)}
/* sections */
section{padding:72px 0;border-bottom:1px solid var(--line)}
section.alt{background:var(--soft2)}
section .intro{max-width:62ch;color:var(--mute);margin-top:10px}
.pillars{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:28px}
.pillar{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px}
.pillar .ico{width:40px;height:40px;border-radius:10px;background:var(--pq);color:var(--accent);display:grid;place-items:center;margin-bottom:4px}
.pillar .ico svg{width:22px;height:22px}
.pillar .n{font-size:.74rem;font-weight:700;letter-spacing:.12em;color:var(--accent);text-transform:uppercase}
.pillar h3{margin:0;font-size:1.12rem}
.pillar p{font-size:.95rem;color:var(--mute);margin:0}
.card{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);padding:22px 24px;box-shadow:var(--shadow)}
.kv{display:grid;grid-template-columns:max-content 1fr;gap:0 24px;margin:0}
.kv dt{color:var(--mute);padding:11px 0;border-bottom:1px solid var(--line);font-size:.92rem}
.kv dd{margin:0;padding:11px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere;font-size:.95rem}
.kv dt:last-of-type,.kv dd:last-of-type{border-bottom:0}
.kv code{font-size:.84em}
.toc{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:28px}
.toc a{position:relative;display:block;padding:22px 24px 22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);color:var(--fg);text-decoration:none;box-shadow:var(--shadow);transition:transform .14s,border-color .14s}
.toc a:hover{border-color:color-mix(in srgb,var(--accent) 50%,var(--line));transform:translateY(-2px);text-decoration:none;color:var(--fg)}
.toc a::after{content:"→";position:absolute;right:20px;top:20px;color:var(--accent);opacity:.8;font-weight:600}
.toc .n{font-size:.74rem;font-weight:700;letter-spacing:.12em;color:var(--accent);text-transform:uppercase}
.toc b{display:block;font-size:1.08rem;margin:6px 0 6px;font-weight:650}
.toc span{font-size:.92rem;color:var(--mute);display:block;line-height:1.5}
.release{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;padding:28px 30px;border:1px solid var(--line);border-radius:16px;background:var(--bg2);box-shadow:var(--shadow);margin-top:24px}
@media(max-width:760px){.release{grid-template-columns:1fr}}
.ver{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;background:var(--okbg);color:var(--ok);font-weight:700;font-size:.85rem;letter-spacing:.02em}
.release h3{margin:10px 0 6px;font-size:1.3rem}
.release p{margin:0;color:var(--mute)}
.release .actions{display:flex;gap:10px;flex-wrap:wrap}
/* tables */
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--mute);font-weight:600;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;background:var(--soft2)}
td.r,th.r{text-align:right;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:color-mix(in srgb,var(--soft2) 60%,transparent)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);box-shadow:var(--shadow);margin-top:16px}
.tablewrap table{min-width:560px}
.dl td:first-child{white-space:nowrap;font-weight:600}
/* content blocks */
.callout{border:1px solid color-mix(in srgb,var(--warn) 40%,var(--line));background:var(--warnbg);border-radius:var(--radius);padding:16px 20px;margin:22px 0;display:flex;gap:14px}
.callout::before{content:"!";flex:none;width:26px;height:26px;border-radius:50%;background:var(--warn);color:var(--warnbg);display:grid;place-items:center;font-weight:800;font-size:.9rem;margin-top:2px}
.callout b{color:var(--warn)}
ol.steps{counter-reset:s;list-style:none;padding:0;margin:16px 0 0;display:grid;gap:12px}
ol.steps li{counter-increment:s;position:relative;padding:16px 18px 16px 60px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);box-shadow:var(--shadow);margin:0}
ol.steps li::before{content:counter(s);position:absolute;left:18px;top:16px;width:28px;height:28px;border-radius:50%;background:var(--ink);color:var(--bg);display:grid;place-items:center;font-weight:700;font-size:.85rem}
ol.steps li b{display:block;margin-bottom:2px}
.note{font-size:.9rem;color:var(--mute)}
.pagehead{padding:56px 0 36px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--soft2),var(--bg))}
.pagehead h1{font-size:clamp(1.9rem,3.6vw,2.7rem);max-width:22ch}
.pagehead .lede{font-size:1.1rem;margin-top:12px}
.crumbs{font-size:.84rem;color:var(--mute);margin-bottom:14px}
.crumbs a{color:var(--mute)}
.two{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:32px;align-items:start}
@media(max-width:860px){.two{grid-template-columns:1fr}}
/* footer */
footer{padding:48px 0 56px;color:var(--mute);font-size:.9rem;background:var(--soft2);border-top:1px solid var(--line)}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
@media(max-width:860px){footer .cols{grid-template-columns:1fr 1fr}}
@media(max-width:560px){footer .cols{grid-template-columns:1fr}}
footer h4{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--fg);margin-bottom:10px}
footer ul{list-style:none;padding:0;margin:0}footer li{margin:6px 0}
footer a{color:var(--fg);opacity:.85}footer a:hover{opacity:1}
footer .fine{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);font-size:.82rem;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
/* mobile */
@media(max-width:900px){
  nav.top .wrap{height:60px}
  .menubtn{display:flex}
  nav.top ul{display:none;position:absolute;left:0;right:0;top:60px;flex-direction:column;gap:2px;margin:0;padding:10px 12px 14px;background:var(--bg2);border-bottom:1px solid var(--line);box-shadow:0 16px 32px rgba(0,0,0,.18);align-items:stretch}
  nav.top.open ul{display:flex}
  nav.top li a{padding:12px 12px;font-size:1rem;opacity:1}
  nav.top .navcta{margin:8px 0 0}
  section{padding:48px 0}
  .pagehead{padding:36px 0 24px}
  .cta .btn{width:100%;justify-content:center}
  .kv{grid-template-columns:1fr;gap:0}.kv dt{padding:10px 0 0;border-bottom:0}.kv dd{padding:2px 0 10px}
  .stats{grid-template-columns:1fr 1fr}
  .tablewrap th,.tablewrap td{padding:9px 10px;font-size:.88rem}
  .toc{grid-template-columns:1fr}
  pre{font-size:12.5px}
}

/* ===== qtc.markets components ===== */
.hero h1{max-width:16ch}
.pricehero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:16px;margin:28px 0 8px;align-items:stretch}
@media(max-width:860px){.pricehero{grid-template-columns:1fr}}
.pricebig{display:flex;flex-direction:column;justify-content:center;padding:30px 32px;border-radius:16px;background:var(--ink);color:var(--bg);border:1px solid var(--ink);box-shadow:var(--shadow);position:relative;overflow:hidden}
.pricebig::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--gold2) 35%,transparent),transparent 70%);pointer-events:none}
.plabel{font-size:.76rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gold2)}
.pnum{font-size:clamp(3.6rem,8vw,5.6rem);font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--gold2);margin:12px 0 6px;font-variant-numeric:tabular-nums}
.pnum .cur{font-size:.42em;font-weight:700;vertical-align:top;margin-right:4px;color:color-mix(in srgb,var(--gold2) 78%,transparent);position:relative;top:.28em}
.pnum .dec{font-size:.42em;font-weight:700;color:color-mix(in srgb,var(--gold2) 70%,transparent)}
.punit{font-size:1.25rem;font-weight:650;color:var(--gold2)}
.pnote{margin-top:14px;font-size:.88rem;color:var(--mute);max-width:40ch}
.facts{display:grid;grid-template-columns:1fr;gap:12px}
.fact{padding:14px 18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center;box-shadow:var(--shadow)}
.fact b{display:block;font-size:1.5rem;font-weight:750;letter-spacing:-.01em;min-width:96px;white-space:nowrap}
.fact span{font-size:.88rem;color:var(--mute);line-height:1.45}
.status{display:inline-flex;gap:10px;align-items:center;margin-top:22px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:var(--bg2);font-size:.92rem;box-shadow:var(--shadow)}
.dot{width:10px;height:10px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px color-mix(in srgb,var(--gold) 20%,transparent);flex:none}
.formula{display:block;background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:16px 0;font-size:1.15rem;line-height:1.9;overflow-x:auto;box-shadow:var(--shadow)}
.formula i{font-style:italic;font-family:"Times New Roman",Georgia,serif;font-size:1.25rem}
.formula sub,.formula sup{font-size:.68em}
.formula .sep{margin:0 12px;color:var(--mute)}
.plain{border-left:3px solid var(--accent);padding:6px 0 6px 16px;margin:20px 0;color:var(--fg)}
.plain b{color:var(--accent)}
.chart{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);box-shadow:var(--shadow);margin-top:14px}
.legend{display:flex;flex-wrap:wrap;gap:14px;font-size:.85rem;color:var(--mute);margin-top:12px}
.legend i{display:inline-block;width:18px;height:0;border-top:3px solid;margin-right:6px;vertical-align:middle}
.factors td:first-child{font-weight:650;white-space:nowrap}
blockquote.wording{margin:18px 0;padding:26px 30px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);font-size:1.05rem;box-shadow:var(--shadow);border-left:4px solid var(--accent)}
blockquote.wording p{max-width:none}blockquote.wording p:first-child{margin-top:0}blockquote.wording p:last-child{margin-bottom:0}
.ref{padding:14px 0;border-bottom:1px solid var(--line)}.ref:last-child{border-bottom:0}.ref b{font-weight:650}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:44px;padding-top:22px;border-top:1px solid var(--line)}
.pager a{flex:1;padding:14px 18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);color:var(--fg);text-decoration:none;box-shadow:var(--shadow)}
.pager a.next{text-align:right}.pager a small{display:block;color:var(--mute);font-size:.74rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:2px}
.pager a:hover{border-color:color-mix(in srgb,var(--accent) 50%,var(--line));text-decoration:none;color:var(--fg)}
.toggle{display:flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.toggle button{padding:7px 12px;border-radius:8px;border:1px solid var(--line);background:var(--bg2);color:var(--fg);cursor:pointer;font:inherit;font-size:.85rem}
.toggle button:hover{border-color:color-mix(in srgb,var(--accent) 50%,var(--line))}
.card.soft{background:var(--soft2)}
.pvwap-grid{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;align-items:center;margin-top:10px}
.pvwap-grid input{padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit;width:100%}
.pvwap-grid .h{font-size:.74rem;color:var(--mute);text-transform:uppercase;letter-spacing:.06em;font-weight:650}
.pvwap-out{margin-top:12px;padding:14px 16px;border-radius:10px;background:var(--soft2);border:1px solid var(--line)}
.pvwap-out b{font-size:1.3rem}
@media(max-width:900px){.pricebig{padding:22px 20px}.pnum{font-size:clamp(3.2rem,16vw,4.6rem)}.fact{grid-template-columns:auto 1fr;gap:14px}.fact b{font-size:1.3rem;min-width:64px}.formula{font-size:1rem;padding:12px 14px}.formula .sep{display:block;height:8px;overflow:hidden;color:transparent;margin:0}.pager{flex-direction:column}.pager a.next{text-align:left}.toggle button{font-size:.9rem}}
/* markets hero is single-column: the price block carries its own grid */
header.hero .wrap{display:block}
header.hero .lede{margin-top:22px}
nav.top li a{padding:8px 9px;font-size:.86rem}
@media(min-width:901px) and (max-width:1360px){nav.top .navcta{display:none}}
nav.top ul{min-width:0;overflow-x:auto;flex-wrap:nowrap}
.pager{margin-bottom:64px}
.pager a{padding:18px 20px}