:root{
  --bg:#07090f;
  --bg-2:#0d1119;
  --bg-3:#141924;
  --line:#1f2533;
  --line-2:#2a3142;
  --text:#e6e9ef;
  --muted:#8a92a6;
  --accent:#94BE1F;
  --accent-2:#b8e434;
  --green:#4ade80;
  --red:#f87171;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:'Instrument Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:'Bricolage Grotesque','Instrument Sans',sans-serif;font-weight:600;letter-spacing:-0.02em;margin:0}
code,.mono{font-family:'JetBrains Mono',ui-monospace,Menlo,monospace}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:960px;margin:0 auto;padding:32px 20px}
header.site{padding:24px 20px;border-bottom:1px solid var(--line)}
header.site .bar{max-width:960px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600}
.brand .dot{width:10px;height:10px;border-radius:2px;background:var(--accent);display:inline-block}
.brand span{font-size:15px}
nav.top a{color:var(--muted);font-size:14px;margin-left:18px}
nav.top a:hover{color:var(--text);text-decoration:none}

.hero{padding:56px 0 24px}
.hero h1{font-size:clamp(32px,5vw,48px);line-height:1.1}
.hero h1 .hl{color:var(--accent)}
.hero p.lead{color:var(--muted);font-size:17px;max-width:620px;margin-top:14px}

.card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:0;overflow:hidden}

.tabs{display:flex;border-bottom:1px solid var(--line);background:var(--bg-3)}
.tab{flex:1;padding:14px 16px;background:transparent;border:0;color:var(--muted);font:inherit;cursor:pointer;font-size:14px;font-weight:500;border-right:1px solid var(--line);transition:color .15s,background .15s;text-align:center}
.tab:last-child{border-right:0}
.tab.active{color:var(--text);background:var(--bg-2);position:relative}
.tab.active::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--accent)}
.tab:hover:not(.active){color:var(--text)}

.panel{padding:28px}
.panel .mode-desc{color:var(--muted);font-size:14px;margin:0 0 22px;max-width:640px}

.grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media (max-width:720px){.grid{grid-template-columns:1fr;gap:24px}}

.inputs,.results{display:flex;flex-direction:column;gap:14px}
label{display:block;font-size:12px;text-transform:uppercase;letter-spacing:0.08em;color:var(--muted);margin-bottom:6px;font-weight:500}
.field{background:var(--bg-3);border:1px solid var(--line);border-radius:8px;padding:10px 12px;display:flex;align-items:center;gap:8px;transition:border-color .15s}
.field:focus-within{border-color:var(--accent)}
.field .prefix,.field .suffix{color:var(--muted);font-size:14px;user-select:none}
input[type="number"]{flex:1;background:transparent;border:0;color:var(--text);font:inherit;font-size:16px;width:100%;outline:none;font-family:'JetBrains Mono',monospace}
input[type="number"]::-webkit-outer-spin-button,input[type="number"]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
input[type="number"]{-moz-appearance:textfield}

.results h3{font-size:13px;text-transform:uppercase;letter-spacing:0.1em;color:var(--muted);font-weight:500;margin-bottom:4px}
.res{display:flex;justify-content:space-between;align-items:baseline;padding:12px 14px;background:var(--bg-3);border:1px solid var(--line);border-radius:8px}
.res .k{font-size:13px;color:var(--muted)}
.res .v{font-family:'JetBrains Mono',monospace;font-size:16px;font-weight:500}
.res.hero-res{background:linear-gradient(180deg,rgba(148,190,31,0.08),rgba(148,190,31,0.02));border-color:rgba(148,190,31,0.3)}
.res.hero-res .k{color:var(--accent)}
.v.positive{color:var(--green)}
.v.negative{color:var(--red)}

.summary{margin-top:18px;padding:14px 16px;background:var(--bg-3);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:6px;font-size:14px;color:var(--muted)}
.summary strong{color:var(--text);font-weight:500}

.charts{margin-top:28px;display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:720px){.charts{grid-template-columns:1fr}}
.chart-block{background:var(--bg-3);border:1px solid var(--line);border-radius:8px;padding:18px}
.chart-title{font-size:13px;text-transform:uppercase;letter-spacing:0.1em;color:var(--muted);font-weight:500;margin:0 0 6px}
.chart-sub{font-size:12px;color:var(--muted);margin:0 0 14px;line-height:1.5;opacity:0.8}
.chart{width:100%;height:auto;display:block;font-family:'JetBrains Mono',monospace}
.chart-small{min-height:80px}
.chart .axis{stroke:var(--line-2);stroke-width:1}
.chart .bar-pos{fill:var(--green)}
.chart .bar-neg{fill:var(--red)}
.chart .bar-bg{fill:var(--bg-2);stroke:var(--line);stroke-width:1}
.chart .bar-fill-back{fill:var(--accent);opacity:0.85}
.chart .bar-fill-lay{fill:#5ea8e8;opacity:0.85}
.chart text{font-size:11px;fill:var(--muted);font-family:'JetBrains Mono',monospace}
.chart text.label{fill:var(--text);font-size:11px}
.chart text.value{fill:var(--text);font-size:12px;font-weight:500}

section.content{margin-top:56px}
section.content h2{font-size:24px;margin-bottom:14px}
section.content p{color:var(--muted);max-width:680px}
.faq{margin-top:32px;display:flex;flex-direction:column;gap:10px}
details{background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:14px 18px}
details[open]{border-color:var(--line-2)}
summary{cursor:pointer;font-weight:500;list-style:none;display:flex;justify-content:space-between;align-items:center}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--accent);font-size:20px;font-family:'JetBrains Mono',monospace}
details[open] summary::after{content:"−"}
details p{margin:12px 0 0;color:var(--muted);font-size:15px}

footer{margin-top:72px;padding:28px 20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
footer .bar{max-width:960px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.disclaimer{max-width:960px;margin:0 auto;padding:0 20px;margin-top:40px;color:var(--muted);font-size:12px;line-height:1.6;border-left:2px solid var(--line-2);padding-left:14px}