/* Optionpad — shared tokens and chrome */
:root{
  --bg:#000;
  --ink:#f2f0ef;
  --ink-2:#a7a3a2;
  --ink-3:#6d6867;
  --line:rgba(255,255,255,.13);
  --line-soft:rgba(255,255,255,.07);
  --surface:#070908;
  --accent:#4ec98a;
  --accent-dim:rgba(78,201,138,.30);
  --accent-soft:rgba(78,201,138,.09);
  --put:#cf4a55;
  --put-dim:rgba(207,74,85,.30);
  --put-soft:rgba(207,74,85,.09);
  --serif:"Instrument Serif",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --pad:clamp(20px,4.5vw,56px);
  --maxw:1320px;
  --bar:64px;
  --rail:184px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--accent);color:#000}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-.015em;margin:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.mono{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.mark{width:15px;height:15px;flex:none}

/* ---- top bar: a segmented instrument strip, not a row of links ---------- */
#nav{
  position:fixed;top:0;left:0;right:0;z-index:60;height:var(--bar);
  display:flex;align-items:stretch;
  border-bottom:1px solid var(--line-soft);
  background:rgba(0,0,0,.5);
  backdrop-filter:blur(20px) saturate(1.25);-webkit-backdrop-filter:blur(20px) saturate(1.25);
  transition:background .3s ease,border-color .3s ease;
}
#nav.stuck{background:rgba(0,0,0,.9);border-bottom-color:var(--line)}
.nav-in{display:flex;align-items:stretch;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.cell{display:flex;align-items:center;gap:10px;flex:none;padding:0 clamp(14px,1.9vw,24px);border-left:1px solid var(--line-soft)}
.cell:first-child{padding-left:0;border-left:0}
.cell:last-child{padding-right:0}
.cell.grow{flex:1;min-width:0}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;letter-spacing:-.01em}
.nav-tag{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-secs{display:flex;align-items:stretch;gap:0}
.nav-secs a{
  display:flex;align-items:center;gap:7px;padding:0 clamp(10px,1.2vw,16px);
  font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink-3);transition:color .25s ease;
}
.nav-secs a:hover{color:var(--ink-2)}
.nav-secs a.on{color:var(--ink)}
.nav-secs a .n{color:var(--ink-3);transition:color .25s ease}
.nav-secs a.on .n{color:var(--accent)}
.nav-num{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap}
.nav-num b{color:var(--ink-2);font-weight:400}

/* ---- buttons ------------------------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:44px;padding:0 20px;border:1px solid var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink);transition:border-color .25s ease,background .25s ease,color .25s ease;white-space:nowrap;
}
.btn:hover{border-color:var(--ink-3);background:rgba(255,255,255,.04)}
.btn-fill{background:var(--ink);color:#000;border-color:var(--ink)}
.btn-fill:hover{background:#fff;border-color:#fff;color:#000}
.btn-sm{height:34px;padding:0 14px;font-size:10px}
.btn .ar{transition:transform .25s ease}
.btn:hover .ar{transform:translateX(3px)}
.nav-cta{height:100%;padding:0 clamp(14px,1.9vw,24px);display:flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;
  border-left:1px solid var(--line-soft);transition:background .25s ease}
.nav-cta:hover{background:rgba(255,255,255,.05)}
.nav-cta .ar{transition:transform .25s ease}
.nav-cta:hover .ar{transform:translateX(3px)}

/* ---- footer ------------------------------------------------------------- */
footer{border-top:1px solid var(--line-soft);padding:clamp(40px,6vh,64px) 0 clamp(36px,5vh,52px);margin-top:clamp(48px,8vh,90px)}
.f-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:26px}
.f-links{display:flex;gap:18px;flex-wrap:wrap}
.f-links a{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3);transition:color .25s ease}
.f-links a:hover{color:var(--ink)}
.ca{margin-left:auto;display:flex;align-items:center;gap:10px;border:1px solid var(--line-soft);padding:7px 8px 7px 13px}
.ca .k{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3)}
.ca .v{font-family:var(--mono);font-size:11px;color:var(--ink-2)}
.ca button{font-family:var(--mono);font-size:10px;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3);
  border:1px solid var(--line-soft);padding:4px 8px;transition:.25s ease}
.ca button:hover{color:var(--ink);border-color:var(--ink-3)}
.f-note{font-size:12.5px;line-height:1.75;color:var(--ink-3);max-width:96ch;border-top:1px solid var(--line-soft);padding-top:24px}

/* ---- shared bits -------------------------------------------------------- */
.rule{width:36px;height:1px;background:var(--accent);flex:none}
.kv{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line-soft)}
.kv:last-child{border-bottom:0}
.kv dt{margin:0;font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3)}
.kv dd{margin:0;font-size:14px;text-align:right;color:var(--ink)}
dl{margin:0}
.acc{color:var(--accent)}
.put{color:var(--put)}

@media (max-width:1500px){ .nav-tag{display:none} .cell.grow{border-left:0;padding:0} }
@media (max-width:1180px){ .nav-secs{display:none} }
@media (max-width:900px){
  :root{--rail:0px}
  .cell-num{display:none}
  .nav-in{padding:0 var(--pad)}
  .f-row{gap:16px}
  .ca{margin-left:0}
}
@media (max-width:560px){ .brand{font-size:17px} .nav-cta{padding:0 14px} }
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* X — its own cell in the strip, same hairline rhythm as the rest */
.cell-x{color:var(--ink-3);transition:color .25s ease,background .25s ease}
.cell-x:hover{color:var(--ink);background:rgba(255,255,255,.04)}
@media (max-width:560px){ .cell-x{padding:0 12px} }

/* the logo is a raster mark; keep it crisp and let it carry its own alpha */
img.mark{width:20px;height:20px;object-fit:contain;flex:none}