@font-face{font-family:"Instrument Serif";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/instrument-serif-400.woff2) format("woff2")}
@font-face{font-family:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url(../fonts/instrument-serif-400-italic.woff2) format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:400 700;font-display:swap;src:url(../fonts/inter-var.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:400 500;font-display:swap;src:url(../fonts/jetbrains-mono-var.woff2) format("woff2")}

:root{
  --bg:#0B1626; --grid:rgba(120,160,215,.07); --line:#2A4062; --draw:#7F9CC6; --bright:#D6E4F8;
  --text:#E9EFF8; --muted:#95A8C4; --faint:#6F84A6; --brass:#D9B36C;
  --serif:"Instrument Serif","Iowan Old Style",Georgia,serif;
  --sans:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --max:1200px;
  --header-bg:rgba(11,22,38,.97); --lede:#C6D3E6; --body:#C2CFE2; --ok:#93e5b5; --cyan:#9be7e9;
  --todo-bg:#3a2e10; --todo:#f1d99b; --tint:rgba(214,228,248,.05); --brass-tint:rgba(217,179,108,.07);
  --btn-bg:rgba(11,22,38,.6); --stage-bg:rgba(14,27,46,.78);
}
/* light theme: navy ink on drafting paper (the HFC product window stays dark) */
[data-theme="light"]{
  --bg:#F4F2EC; --grid:rgba(28,58,104,.075); --line:#CBD3DF; --draw:#5A77A3; --bright:#0F2D55;
  --text:#0D1A2C; --muted:#45556C; --faint:#5A697F; --brass:#85580C;
  --header-bg:rgba(244,242,236,.97); --lede:#22324A; --body:#2A394F; --ok:#1B7346; --cyan:#0B6A70;
  --todo-bg:#F3DFA9; --todo:#4F3504; --tint:rgba(15,45,85,.05); --brass-tint:rgba(133,88,12,.08);
  --btn-bg:rgba(255,255,255,.65); --stage-bg:rgba(255,255,255,.55);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;color:var(--text);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
  background-color:var(--bg);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:32px 32px}
a{color:inherit}
img,svg{max-width:100%}
.skip{position:absolute;left:-999px;top:8px;background:var(--text);color:var(--bg);padding:8px 12px;z-index:20}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
@media (max-width:600px){.wrap{padding:0 18px}}

header.site{border-bottom:1px solid var(--line);background:var(--header-bg);position:sticky;top:0;z-index:10;}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.brand{font-family:var(--serif);font-size:26px;text-decoration:none;letter-spacing:.005em;white-space:nowrap}
.links{display:flex;gap:28px;font:500 12px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.links a{text-decoration:none}.links a:hover{color:var(--text)}
.navcta{font:500 12px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;text-decoration:none;color:var(--bg);background:var(--bright);padding:11px 14px;white-space:nowrap}
@media (max-width:860px){.links{display:none}}
@media (max-width:420px){.navcta{padding:10px 10px;font-size:11px}}

/* hero: headline + experience in the first viewport */
.hero{padding-top:26px;padding-bottom:24px}
.eyebrow{font:500 12px/1.4 var(--mono);color:var(--faint);letter-spacing:.1em;text-transform:uppercase;display:flex;justify-content:space-between;gap:12px;margin-bottom:12px}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(40px,4.7vw,70px);line-height:1;letter-spacing:-.012em;margin:0 0 16px}
h1 em{color:var(--bright);font-style:italic}
.hero-sub{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;margin-bottom:16px}
.lede{font-size:18px;line-height:1.5;color:var(--lede);margin:0;max-width:50em}
.ctas{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;justify-content:space-between;align-items:center;gap:14px;text-decoration:none;font:500 12.5px/1 var(--mono);letter-spacing:.05em;text-transform:uppercase;padding:15px 16px;border:1px solid var(--draw);white-space:nowrap}
.btn.primary{background:var(--bright);color:var(--bg);border-color:var(--bright)}
.btn:hover{border-color:var(--bright)}
@media (max-width:960px){.hero-sub{grid-template-columns:1fr;gap:16px}}
@media (max-width:600px){.hero{padding-top:20px}.eyebrow{margin-bottom:14px}.eyebrow span+span{display:none}h1{font-size:39px;margin-bottom:12px}.lede{font-size:16px}.m-hide{display:none}.hero .ctas.top{display:none}}
.ctas.after{display:none}
@media (max-width:600px){.ctas.after{display:flex;margin-top:16px}.ctas.after .btn{flex:1 1 100%}}

section.s{padding:96px 0;border-top:1px solid var(--line)}
.two{display:grid;grid-template-columns:240px 1fr;gap:56px}
@media (max-width:860px){.two{grid-template-columns:1fr;gap:18px}section.s{padding:72px 0}}
.margin{font:500 12px/1.6 var(--mono);color:var(--faint);letter-spacing:.08em;text-transform:uppercase}
.margin b{display:block;color:var(--brass);font-weight:500;font-size:13px;margin-bottom:6px}
h2{font-family:var(--serif);font-weight:400;font-size:clamp(34px,4.6vw,56px);line-height:1.03;letter-spacing:-.01em;margin:0 0 22px}
h2 em{font-style:italic;color:var(--bright)}
.body{color:var(--body);max-width:38em}
.problems{display:grid;grid-template-columns:repeat(3,1fr);margin-top:36px;border-top:1px solid var(--line)}
.problems div{padding:22px 24px 0 0}
.problems h3{font-family:var(--serif);font-weight:400;font-size:25px;margin:0 0 8px}
.problems p{margin:0;color:var(--muted);font-size:15.5px}
@media (max-width:860px){.problems{grid-template-columns:1fr}}
.spec{width:100%;border-collapse:collapse;margin-top:32px;font-size:15.5px}
.spec th,.spec td{border-top:1px solid var(--line);padding:15px 12px 15px 0;text-align:left;vertical-align:top}
.spec th{font:500 12px/1.5 var(--mono);letter-spacing:.06em;color:var(--faint);text-transform:uppercase;width:64px}
.spec td:nth-child(2){font-family:var(--serif);font-size:22px;width:34%;color:var(--text)}
.spec td:last-child{color:var(--muted)}
@media (max-width:700px){.spec tr{display:grid;grid-template-columns:52px 1fr}.spec td:nth-child(2){width:auto}.spec td:last-child{grid-column:2}}
.tblock{margin-top:36px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;border:1px solid var(--draw);font-family:var(--mono);font-size:12.5px}
.tblock>div{padding:12px 14px;border-right:1px solid var(--line)}
.tblock>div:last-child{border-right:0}
.tblock span{display:block;color:var(--faint);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px}
.tblock .stamp{color:var(--brass)}
@media (max-width:760px){.tblock{grid-template-columns:1fr 1fr}.tblock>div{border-bottom:1px solid var(--line)}}
.status{display:inline-block;font:500 11px/1 var(--mono);letter-spacing:.1em;color:var(--brass);border:1px solid var(--brass);padding:6px 9px;margin-bottom:20px}
.limit{margin-top:22px;color:var(--muted);font-size:15px;border-left:1px solid var(--brass);padding-left:16px;max-width:40em}
.maturity{width:100%;border-collapse:collapse;margin-top:28px;font-size:15px}
.maturity th,.maturity td{border-top:1px solid var(--line);padding:12px 12px 12px 0;text-align:left;vertical-align:top}
.maturity th{font:500 11.5px/1.5 var(--mono);letter-spacing:.08em;color:var(--faint);text-transform:uppercase}
.maturity td:first-child{color:var(--text)}
.maturity td:last-child{font:500 11.5px/1.5 var(--mono);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}
.m-impl{color:var(--ok)}.m-demo{color:var(--brass)}.m-plan{color:var(--faint)}
.closing{font-family:var(--serif);font-size:clamp(30px,4.2vw,52px);line-height:1.1;margin:0;max-width:20em}
.closing em{color:var(--brass)}
footer.site{border-top:1px solid var(--line);padding:32px 0 56px;font:12px/1.7 var(--mono);color:var(--faint);letter-spacing:.04em}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot a{color:var(--muted)}
.legal{padding:64px 0 96px;max-width:46em}
.legal h1{font-size:clamp(40px,5vw,60px);margin-bottom:28px}
.legal h2{font-size:28px;margin:36px 0 10px}
.legal p,.legal li{color:var(--body)}
.todo{background:var(--todo-bg);color:var(--todo);padding:1px 6px;font-family:var(--mono);font-size:.85em}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* hero grid: stacked by default; copy left and product right on wide screens */
.hero{display:grid;grid-template-columns:minmax(0,1fr);grid-template-areas:"copy" "top" "stage" "cap" "after" "text"}
.hero-copy{grid-area:copy}.hero .xp-top{grid-area:top}.hero .xp-stage{grid-area:stage}.hero .xp-cap{grid-area:cap}.hero .ctas.after{grid-area:after}.hero .xp-text{grid-area:text}
.br-split{display:none}
@media (min-width:1100px){
  :root{--max:1600px}
  .wrap{padding:0 40px}
  .hero{padding-top:28px;padding-bottom:28px;grid-template-columns:minmax(360px,.9fr) minmax(0,2.1fr);column-gap:52px;
    grid-template-areas:"copy stage" "top stage" "cap stage" "text text";grid-template-rows:auto auto 1fr auto;
    min-height:calc(100svh - 61px);align-content:center}
  .hero-copy .eyebrow{flex-direction:column;gap:4px;margin-bottom:20px}
  .hero-copy .eyebrow span+span{color:var(--faint);opacity:.85}
  .hero-copy h1{font-size:clamp(42px,3.3vw,66px);line-height:1.02;margin-bottom:18px}
  .hero-copy h1 em{display:block}
  .br-split{display:inline}
  .hero-copy .hero-sub{grid-template-columns:1fr;gap:22px;margin-bottom:20px}
  .hero-copy .lede{font-size:17.5px}
  .hero .xp-stage{align-self:center}
}
@media (min-width:1100px) and (max-height:780px){
  .hero{padding-top:20px;padding-bottom:20px}
  .hero-copy .eyebrow{margin-bottom:12px}
  .hero-copy .eyebrow span+span{display:none}
  .hero-copy h1{font-size:clamp(38px,7.2vh,60px);margin-bottom:12px}
  .hero-copy .lede{font-size:16px;line-height:1.45}
  .hero-copy .hero-sub{gap:16px;margin-bottom:14px}
  .hero-copy .btn{padding:12px 14px}
}

/* use cases */
.arch{list-style:none;margin:36px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}
.arch li{padding:16px 18px;border-right:1px solid var(--line);position:relative}
.arch li:last-child{border-right:0}
.arch li:not(:last-child)::after{content:"→";position:absolute;right:-9px;top:50%;transform:translateY(-50%);background:var(--bg);color:var(--draw);font:12px var(--mono);padding:2px 0;z-index:1}
.arch span{display:block;font:500 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:6px}
.arch b{display:block;font-family:var(--serif);font-weight:400;font-size:22px;line-height:1.15;margin-bottom:6px}
.arch small{display:block;color:var(--muted);font-size:13.5px;line-height:1.45}
.arch li.core{background:var(--tint)}
.arch li.core b{color:var(--bright)}
@media (max-width:860px){.arch{grid-template-columns:1fr}.arch li{border-right:0;border-bottom:1px solid var(--line)}.arch li:last-child{border-bottom:0}.arch li:not(:last-child)::after{content:"↓";right:auto;left:18px;top:auto;bottom:-10px;transform:none;padding:0 4px}}
.uc{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:1fr;border-top:1px solid var(--line);border-left:1px solid var(--line)}
@media (min-width:700px){.uc{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1500px){.uc{grid-template-columns:repeat(4,1fr)}}
.uc li{border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg);padding:22px 22px 24px;display:flex;flex-direction:column;gap:8px}
.uc h3{font-family:var(--serif);font-weight:400;font-size:25px;line-height:1.1;margin:4px 0 2px}
.uc p{margin:0;color:var(--body);font-size:15px;line-height:1.55}
.uc p.fl{font:12px/1.6 var(--mono);color:var(--muted);border-top:1px solid var(--line);padding-top:10px;margin-top:auto}
.uc a{font:500 12px/1.4 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--brass);text-decoration:none}
.uc a:hover{text-decoration:underline}
.uc .note{color:var(--faint);font-size:13px;line-height:1.5}
.st{align-self:flex-start;font:500 10.5px/1 var(--mono);font-style:normal;letter-spacing:.1em;text-transform:uppercase;padding:5px 8px;border:1px solid currentColor}
.st.impl{color:var(--ok)}.st.demo{color:var(--brass)}.st.exp{color:var(--cyan)}.st.idea{color:var(--faint)}
.split2{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:44px}
.split2 h3{margin:0 0 10px}
.plain{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.plain li{padding:10px 0;border-bottom:1px solid var(--line);color:var(--body);font-size:15.5px}
@media (max-width:760px){.split2{grid-template-columns:1fr;gap:28px}}
.uc li.yours{background:linear-gradient(var(--brass-tint),var(--brass-tint)),var(--bg)}
.uc li.yours h3 em{color:var(--brass)}
.uc li.yours a{margin-top:auto}
.navend{display:flex;align-items:center;gap:14px}
.lang{font:500 12px/1 var(--mono);letter-spacing:.08em;color:var(--muted);text-decoration:none;padding:10px 4px}
.lang:hover{color:var(--text)}
.theme{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;padding:0;background:none;border:1px solid var(--line);color:var(--muted);cursor:pointer}
.theme:hover{color:var(--text);border-color:var(--draw)}
.theme svg{width:16px;height:16px}
@media (max-width:420px){.navend{gap:8px}.theme{width:34px;height:34px}}
.uc li.yours{grid-column:1/-1;display:grid;grid-template-columns:auto auto minmax(0,1fr) auto;align-items:center;gap:10px 28px}
.uc li.yours h3{margin:0;white-space:nowrap}
.uc li.yours a{margin-top:0;white-space:nowrap}
@media (max-width:1180px){.uc li.yours{grid-template-columns:1fr;align-items:start}.uc li.yours h3{white-space:normal}}
.links{align-items:center}
.nav-flag{display:inline-flex;width:22px;height:16px;margin-left:-10px}
.nav-flag svg{width:22px;height:16px;filter:drop-shadow(0 1px 1px rgba(0,0,0,.25))}
.duo{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);margin-top:6px}
.duo>div{padding:20px 22px}
.duo>div+div{border-left:1px solid var(--line)}
.duo .k{display:block;font:500 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--brass);margin-bottom:8px}
.duo h4{font-family:var(--serif);font-weight:400;font-size:26px;line-height:1.1;margin:0 0 8px}
.duo p{margin:0;color:var(--body);font-size:15.5px}
@media (max-width:760px){.duo{grid-template-columns:1fr}.duo>div+div{border-left:0;border-top:1px solid var(--line)}}
.uc li.feature{grid-column:1/-1;background:linear-gradient(var(--tint),var(--tint)),var(--bg)}
.uc li.feature p{max-width:62em}
.uc li.feature h3{font-size:30px}
.duo p.swap{margin-top:12px;padding-top:12px;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted)}
.duo p.swap b{color:var(--text);font-weight:600}
.duo.quad>div{border-top:1px solid var(--line)}
@media (min-width:761px){.duo.quad{grid-template-columns:1fr 1fr}.duo.quad>div:nth-child(-n+2){border-top:0}.duo.quad>div:nth-child(3){border-left:0}}
@media (max-width:760px){.duo.quad>div:first-child{border-top:0}}
.duo .k{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.duo .k .st{font-size:9.5px;padding:4px 6px}
.st.soon{color:var(--cyan)}