:root{--bg:#0B1220;--surface:#111B2E;--card:#16213A;--text:#E8EDF7;--muted:#93A3BC;
--accent:#00C853;--accent2:#FFC107;--border:rgba(255,255,255,.09);--radius:14px;
--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header.site{position:sticky;top:0;z-index:50;background:rgba(11,18,32,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
header.site .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:66px}
.logo{font-weight:800;font-size:20px;letter-spacing:-.4px;color:var(--text);display:flex;align-items:center;gap:9px}
.logo:hover{text-decoration:none}
.logo .dot{width:11px;height:11px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.logo span.o{color:var(--accent)}
nav.top{display:flex;gap:22px;align-items:center;font-size:15px}
nav.top a{color:var(--muted);font-weight:500}
nav.top a:hover{color:var(--text);text-decoration:none}
@media(max-width:720px){nav.top{display:none}}
.hero{padding:54px 0 30px;border-bottom:1px solid var(--border)}
.hero h1{font-size:38px;line-height:1.15;margin:0 0 14px;letter-spacing:-1px}
.hero p.lead{font-size:19px;color:var(--muted);max-width:720px;margin:0 0 26px}
@media(max-width:640px){.hero h1{font-size:29px}.hero p.lead{font-size:17px}}
.pill{display:inline-block;font-size:13px;font-weight:600;color:var(--accent);border:1px solid rgba(0,200,83,.35);background:rgba(0,200,83,.08);padding:4px 12px;border-radius:99px;margin-bottom:16px}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.g3{grid-template-columns:1fr}.g2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.card h3{margin:0 0 8px;font-size:19px}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.card.link:hover{border-color:rgba(0,200,83,.5);transform:translateY(-2px);transition:.15s}
.card.link{display:block;color:inherit}
.card.link:hover{text-decoration:none}
section{padding:44px 0}
h2{font-size:26px;margin:0 0 18px;letter-spacing:-.6px}
h3{letter-spacing:-.2px}
.calc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
label{display:block;font-size:14px;font-weight:600;color:var(--muted);margin:0 0 6px}
input,select{width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--border);background:#0C1526;color:var(--text);font-size:16px;font-family:inherit}
input:focus,select:focus{outline:none;border-color:var(--accent)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.row{grid-template-columns:1fr}}
button{background:var(--accent);color:#04140A;border:0;border-radius:10px;padding:12px 22px;font-size:16px;font-weight:700;cursor:pointer;font-family:inherit}
button:hover{filter:brightness(1.08)}
button.ghost{background:transparent;color:var(--muted);border:1px solid var(--border);font-weight:600}
.out{margin-top:20px;padding:18px;border-radius:12px;background:#0C1526;border:1px dashed var(--border)}
.out .big{font-size:30px;font-weight:800;color:var(--accent);letter-spacing:-.8px;font-family:var(--mono)}
.out .sub{color:var(--muted);font-size:14.5px;margin-top:4px}
.legs{margin:14px 0 6px}
.leg{display:grid;grid-template-columns:1fr 120px 40px;gap:10px;margin-bottom:9px;align-items:end}
@media(max-width:640px){.leg{grid-template-columns:1fr 90px 36px}}
.leg button{background:#25324D;color:var(--muted);padding:11px 0;font-size:16px}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15.5px}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-weight:600;font-size:14px;text-transform:uppercase;letter-spacing:.4px}
tbody tr:hover{background:rgba(255,255,255,.02)}
code{font-family:var(--mono);background:#0C1526;padding:2px 7px;border-radius:6px;font-size:14.5px;border:1px solid var(--border)}
details{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:15px 18px;margin-bottom:11px}
details summary{cursor:pointer;font-weight:650}
details p{color:var(--muted);margin:10px 0 0}
.note{background:rgba(255,193,7,.07);border:1px solid rgba(255,193,7,.28);border-radius:12px;padding:15px 18px;color:#F3D06B;font-size:15.5px}
footer.site{border-top:1px solid var(--border);padding:34px 0 46px;color:var(--muted);font-size:14.5px;margin-top:30px}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}
@media(max-width:720px){footer.site .cols{grid-template-columns:1fr}}
footer.site a{color:var(--muted)}
footer.site h4{color:var(--text);font-size:15px;margin:0 0 10px}
.rg{margin-top:24px;padding-top:18px;border-top:1px solid var(--border);font-size:13.5px;line-height:1.6}
.breadcrumb{font-size:14px;color:var(--muted);padding-top:20px}
.breadcrumb a{color:var(--muted)}