:root{--ink:#050b12;--navy:#081725;--panel:#0d2031;--panel2:#0a1927;--paper:#e9edef;--gold:#cba86a;--line:rgba(255,255,255,.14);--muted:#8fa0ac;--green:#72c6a5;--red:#e58f84;--blue:#6ca7d4}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:#f7f9fa;font-family:"DM Sans",Arial,sans-serif;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit}
a{color:inherit;text-decoration:none}
.skip-link{position:fixed;top:-5rem;left:1rem;z-index:100;background:#fff;color:#000;padding:.8rem}
.skip-link:focus{top:1rem}
.lab-nav{min-height:78px;padding:0 clamp(1.25rem,4vw,4.75rem);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:.75rem;font:500 .76rem/1 Manrope,sans-serif;letter-spacing:.18em}
.brand b{display:block;margin-top:.28rem;color:#aeb9c3;font-size:.56rem;letter-spacing:.27em}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border:1px solid rgba(203,168,106,.8);color:var(--gold);font:500 1.05rem Manrope;transform:rotate(45deg)}
.lab-nav nav{display:flex;align-items:center;gap:1.35rem;font-size:.78rem}
.lab-nav nav>a{color:#bac6cd}
.lab-nav .back{padding:.72rem .9rem;border:1px solid rgba(255,255,255,.3)}
.lang{border:0;background:none;color:var(--gold);font-weight:600;cursor:pointer}
.desk-head{min-height:160px;padding:2.3rem clamp(1.5rem,4vw,4.75rem);display:grid;grid-template-columns:.7fr 1.3fr .6fr;gap:3rem;align-items:end;background:radial-gradient(circle at 75% 0,rgba(203,168,106,.1),transparent 28%),var(--ink)}
.kicker{margin:0 0 .7rem;color:var(--gold);font:500 .67rem/1.35 "DM Mono",monospace;letter-spacing:.12em}
.desk-head h1{margin:0;font:400 clamp(2.5rem,4vw,4.5rem)/1 Manrope;letter-spacing:-.05em}
.desk-tabs{display:flex;border:1px solid var(--line)}
.desk-tabs button{flex:1;min-height:54px;border:0;border-right:1px solid var(--line);background:transparent;color:#8899a5;cursor:pointer;font:500 .75rem "DM Mono",monospace}
.desk-tabs button:last-child{border:0}
.desk-tabs button.active{background:var(--gold);color:var(--ink)}
.local-status{margin:0;text-align:right;color:#83939e;font:500 .68rem "DM Mono",monospace}
.local-status i{display:inline-block;width:7px;height:7px;margin-right:.4rem;border-radius:50%;background:var(--green)}
.lab-view{display:none;grid-template-columns:minmax(300px,.62fr) minmax(0,1.38fr);min-height:760px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lab-view.active{display:grid}
.control-rail{padding:2.2rem clamp(1.5rem,3vw,3rem);background:var(--navy);border-right:1px solid var(--line)}
.control-title{display:flex;justify-content:space-between;align-items:start;margin-bottom:1.5rem}
.control-title>span,.analysis-desk header>div>span{color:var(--gold);font:500 .66rem "DM Mono",monospace;letter-spacing:.08em}
.control-title h2{margin:0;font:400 1.6rem Manrope;letter-spacing:-.03em}
.control-rail>label,.input-grid label{display:flex;flex-direction:column;gap:.5rem;color:#97a7b2;font:500 .72rem/1.35 "DM Mono",monospace;text-transform:uppercase;letter-spacing:.03em}
.control-rail select,.control-rail input{width:100%;height:48px;padding:0 .8rem;border:1px solid rgba(255,255,255,.17);border-radius:0;background:rgba(0,0,0,.18);color:#fff;outline:0;font:400 .88rem "DM Mono",monospace}
.control-rail select:focus,.control-rail input:focus{border-color:var(--gold)}
.input-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-top:1rem}
.run{width:100%;min-height:50px;margin-top:1.25rem;border:0;background:var(--gold);color:var(--ink);font:600 .72rem "DM Mono",monospace;letter-spacing:.06em;cursor:pointer}
.form-error{min-height:1.2rem;margin:.6rem 0;color:var(--red);font-size:.78rem}
.control-rail aside{margin-top:1.5rem;padding:1rem;border-left:1px solid var(--gold);color:#82939f;font-size:.78rem;line-height:1.6}
.analysis-desk{padding:2.2rem clamp(1.5rem,3vw,3rem);background:linear-gradient(145deg,#0c1c2b,#07111d)}
.analysis-desk>header{display:flex;justify-content:space-between;align-items:end;gap:2rem}
.analysis-desk h2{margin:.55rem 0 0;font:400 clamp(1.8rem,3vw,3.2rem) Manrope;letter-spacing:-.04em}
.legend{display:flex;gap:.6rem;align-items:center;color:#8999a4;font:500 .65rem "DM Mono",monospace}
.legend i{display:inline-block;width:24px;height:2px}
.payoff-line,.strategy-line{background:var(--gold)}
.market-line{background:var(--blue);margin-left:.7rem}
.chart-shell{height:360px;margin-top:1.8rem;border:1px solid var(--line);background:rgba(2,8,13,.42);position:relative}
.chart-shell canvas{width:100%;height:100%;display:block}
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);margin-top:1rem}
.metric-strip>div{min-height:110px;padding:1rem;border-right:1px solid var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;flex-direction:column;justify-content:space-between}
.metric-strip span,.greek-grid span{color:#7f909b;font:500 .65rem/1.4 "DM Mono",monospace;text-transform:uppercase}
.metric-strip strong{font:500 clamp(1rem,1.6vw,1.45rem) "DM Mono",monospace;color:#f7f9fa;overflow-wrap:anywhere}
.greek-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:1rem}
.greek-grid>div{padding:.8rem 1rem;background:rgba(255,255,255,.035);display:flex;justify-content:space-between;gap:.5rem}
.greek-grid b{font:500 .8rem "DM Mono",monospace;color:#dbe2e6}
.strategy-brief{display:grid;grid-template-columns:repeat(4,1fr);margin-top:1rem;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.strategy-brief div{min-height:145px;padding:1rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.strategy-brief b{color:var(--gold);font:500 .66rem "DM Mono",monospace;letter-spacing:.06em}
.strategy-brief p{margin:1.5rem 0 0;color:#91a1ac;font-size:.8rem;line-height:1.6}
.scenario-block{margin-top:1.5rem}
.scenario-block h3{font:500 .8rem "DM Mono",monospace;color:#aab7bf;text-transform:uppercase}
.scenario-table{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.scenario-table div{padding:.85rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:.4rem}
.scenario-table span{color:#83939e;font:500 .65rem "DM Mono",monospace}
.scenario-table b{font:500 .8rem "DM Mono",monospace}
.positive{color:var(--green)!important}
.negative{color:var(--red)!important}
.backtest-metrics{grid-template-columns:repeat(3,1fr)}
.method-note{display:grid;grid-template-columns:.4fr 1.6fr;gap:2rem;margin-top:1.5rem;padding:1.2rem;border-left:2px solid var(--gold);background:rgba(255,255,255,.025)}
.method-note b{color:var(--gold);font:500 .72rem "DM Mono",monospace;text-transform:uppercase}
.method-note p{margin:0;color:#82939f;font-size:.8rem;line-height:1.6}
.strategy-library{padding:clamp(4rem,7vw,7rem) clamp(1.5rem,7.8vw,9rem);background:var(--paper);color:var(--ink)}
.strategy-library>header{display:grid;grid-template-columns:1.3fr .7fr;gap:7vw;align-items:end}
.strategy-library h2,.sources h2{margin:0;font:400 clamp(2.2rem,4vw,4.3rem)/1.06 Manrope;letter-spacing:-.045em}
.strategy-library header>p:last-child{margin:0;color:#56656f;line-height:1.7}
.strategy-library .kicker,.sources .kicker{color:#7e6436}
.strategy-cards{display:grid;grid-template-columns:repeat(4,1fr);margin-top:3.5rem;border-top:1px solid #b7c1c7;border-bottom:1px solid #b7c1c7}
.strategy-cards article{min-height:245px;padding:1.5rem;border-right:1px solid #b7c1c7;display:flex;flex-direction:column}
.strategy-cards article:last-child{border:0}
.strategy-cards span{color:#8a6b36;font:500 .65rem "DM Mono"}
.strategy-cards h3{margin:auto 0 .8rem;font:500 1.05rem Manrope}
.strategy-cards p{margin:0;color:#5b6972;font-size:.84rem;line-height:1.6}
.sources{padding:clamp(4rem,7vw,7rem) clamp(1.5rem,7.8vw,9rem);display:grid;grid-template-columns:.7fr 1.3fr;gap:7vw;background:#0a1927}
.sources ol{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.sources li{display:grid;grid-template-columns:180px 1fr;gap:1.5rem;padding:1.15rem 0;border-bottom:1px solid var(--line)}
.sources b{font:500 .8rem Manrope}
.sources span{color:#8d9da8;font-size:.8rem;line-height:1.55}
footer{min-height:70px;padding:0 clamp(1.5rem,4vw,4.75rem);display:flex;justify-content:space-between;align-items:center;color:#687985;background:#03080d;font-size:.7rem}
@media(max-width:1050px){.desk-head{grid-template-columns:1fr 1.5fr}
.local-status{display:none}
.lab-view{grid-template-columns:1fr}
.control-rail{border-right:0;border-bottom:1px solid var(--line)}
.input-grid{grid-template-columns:repeat(3,1fr)}
.strategy-library>header,.sources{grid-template-columns:1fr;gap:2.5rem}
.strategy-cards{grid-template-columns:repeat(2,1fr)}
.strategy-cards article:nth-child(2){border-right:0}
.strategy-cards article:nth-child(-n+2){border-bottom:1px solid #b7c1c7}
}
@media(max-width:700px){.lab-nav{align-items:flex-start;padding-top:1rem;padding-bottom:1rem}
.lab-nav nav{flex-wrap:wrap;justify-content:flex-end;gap:.7rem}
.lab-nav nav>a:first-child,.lab-nav nav>a:nth-child(2){display:none}
.desk-head{grid-template-columns:1fr;gap:1.5rem}
.input-grid{grid-template-columns:repeat(2,1fr)}
.analysis-desk>header{align-items:start;flex-direction:column}
.chart-shell{height:300px}
.metric-strip,.backtest-metrics,.greek-grid{grid-template-columns:repeat(2,1fr)}
.scenario-table{grid-template-columns:1fr}
.strategy-cards{grid-template-columns:1fr}
.strategy-cards article{border-right:0;border-bottom:1px solid #b7c1c7}
.method-note{grid-template-columns:1fr}
.strategy-brief{grid-template-columns:repeat(2,1fr)}
.sources li{grid-template-columns:1fr;gap:.4rem}
footer{padding-top:1.2rem;padding-bottom:1.2rem;gap:.8rem;align-items:flex-start;flex-direction:column}
}
@media(max-width:430px){.input-grid{grid-template-columns:1fr}
.metric-strip,.backtest-metrics,.greek-grid{grid-template-columns:1fr}
.strategy-brief{grid-template-columns:1fr}
}