:root{--bg:#0a0d09;--bg2:#0f130d;--bg3:#151b13;--deep:#060805;--ink:#ecefe6;--mut:#a9b4a2;--metal:#b5dba9;--metal2:#86c474;--line:rgba(181,219,169,.26);--line2:rgba(181,219,169,.13);--err:#f4a891;--n:12px;--spine:272px;
--serif:"Bodoni Moda","Didot","Bodoni MT","Times New Roman",serif;--sans:"Albert Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"Geist Mono",ui-monospace,"SFMono-Regular",Consolas,monospace}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.68 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
[hidden]{display:none!important}
img,svg{max-width:100%}
a{color:var(--metal);text-decoration-thickness:1px;text-underline-offset:.22em}
a:hover{color:var(--ink)}
:focus-visible{outline:2px solid var(--metal);outline-offset:3px}
::selection{background:var(--metal);color:var(--bg)}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.08;margin:0;overflow-wrap:break-word;hyphens:auto;font-optical-sizing:auto}
h1{font-size:clamp(2.35rem,4.5vw,4.3rem);letter-spacing:-.012em;line-height:1.02}
h2{font-size:clamp(1.7rem,2.6vw,2.4rem)}
h3{font-size:1.32rem;line-height:1.2}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
code{font-family:var(--mono);font-size:.86em}
.skip{position:absolute;left:12px;top:-80px;z-index:99;background:var(--metal);color:var(--bg);padding:12px 18px;font-weight:600}
.skip:focus{top:12px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:12px 28px;border:1px solid var(--metal);border-radius:0;background:linear-gradient(180deg,#d3ecc9,var(--metal) 55%,#9fcb92);color:#0a0d09;font:600 .78rem/1.2 var(--sans);letter-spacing:.16em;text-transform:uppercase;text-decoration:none;text-align:center;cursor:pointer;box-shadow:inset 0 0 0 3px var(--bg),inset 0 0 0 4px rgba(10,13,9,.0);transition:background .2s,color .2s,box-shadow .2s;position:relative}
.btn{box-shadow:0 0 0 3px var(--bg),0 0 0 4px var(--line)}
.btn:hover{background:var(--ink);color:#0a0d09;box-shadow:0 0 0 3px var(--bg),0 0 0 4px var(--metal)}
.btn.ghost{background:transparent;color:var(--metal);box-shadow:none}
.btn.ghost:hover{background:rgba(181,219,169,.1);color:var(--ink)}
.btn.sm{min-height:44px;padding:8px 18px;font-size:.7rem;letter-spacing:.13em}
.acts{display:flex;flex-wrap:wrap;gap:18px 20px;margin:0;align-items:center}

/* plate: double hairline frame with stepped deco corners */
.plate,.codebox,.form{position:relative;background:var(--bg2);border:1px solid var(--line)}
.plate::before,.codebox::before,.form::before{content:"";position:absolute;inset:5px;border:1px solid var(--line2);pointer-events:none}
.plate::after,.codebox::after,.form::after{content:"";position:absolute;inset:-1px;pointer-events:none;background-repeat:no-repeat;background-image:
linear-gradient(var(--line),var(--line)),linear-gradient(var(--line),var(--line)),linear-gradient(var(--bg),var(--bg)),
linear-gradient(var(--line),var(--line)),linear-gradient(var(--line),var(--line)),linear-gradient(var(--bg),var(--bg)),
linear-gradient(var(--line),var(--line)),linear-gradient(var(--line),var(--line)),linear-gradient(var(--bg),var(--bg)),
linear-gradient(var(--line),var(--line)),linear-gradient(var(--line),var(--line)),linear-gradient(var(--bg),var(--bg));
background-size:var(--n) 1px,1px var(--n),var(--n) var(--n),var(--n) 1px,1px var(--n),var(--n) var(--n),var(--n) 1px,1px var(--n),var(--n) var(--n),var(--n) 1px,1px var(--n),var(--n) var(--n);
background-position:0 calc(var(--n) - 1px),calc(var(--n) - 1px) 0,0 0,
100% calc(var(--n) - 1px),calc(100% - var(--n) + 1px) 0,100% 0,
0 calc(100% - var(--n) + 1px),calc(var(--n) - 1px) 100%,0 100%,
100% calc(100% - var(--n) + 1px),calc(100% - var(--n) + 1px) 100%,100% 100%}

/* spine (sidebar) */
.spine{position:fixed;left:0;top:0;bottom:0;width:var(--spine);z-index:20;background:var(--bg);border-right:1px solid var(--line);padding:38px 30px 28px;overflow-y:auto;display:flex;flex-direction:column}
.spine::after{content:"";position:fixed;left:calc(var(--spine) - 6px);top:0;bottom:0;width:1px;background:var(--line2);pointer-events:none}
.spine-top{display:block;text-align:center}
.logo{display:inline-flex;flex-direction:column;align-items:center;gap:14px;color:var(--metal);text-decoration:none}
.seal{width:78px;height:78px;display:block;flex:none}
.seal.sm{width:44px;height:44px;color:var(--metal)}
.logo-t{font:400 1.2rem/1.1 var(--serif);color:var(--ink);letter-spacing:.01em;overflow-wrap:anywhere}
.tld{color:var(--metal);font-style:italic}
.spine-tag{font:italic 400 .98rem/1.35 var(--serif);color:var(--mut);text-align:center;margin:10px 0 0}
.top-key,.burger{display:none}
.nav{margin-top:26px;display:flex;flex-direction:column;flex:1}
.nav ol{counter-reset:nv;border-top:1px solid var(--line)}
.nav li{counter-increment:nv;border-bottom:1px solid var(--line2)}
.nav li a{display:flex;align-items:center;gap:14px;min-height:50px;color:var(--ink);text-decoration:none;font:500 .8rem/1.2 var(--sans);letter-spacing:.15em;text-transform:uppercase}
.nav li a::before{content:counter(nv,upper-roman);font:italic 400 1rem/1 var(--serif);color:var(--metal2);width:26px;letter-spacing:0;text-transform:none}
.nav li a:hover{color:var(--metal)}
.nav li a[aria-current]{color:var(--metal)}
.nav li a[aria-current]::after{content:"";margin-left:auto;width:7px;height:7px;background:var(--metal);transform:rotate(45deg)}
.nav-key{margin:26px 4px 0;align-self:stretch}
.spine-ledger{margin:auto 0 0;padding-top:28px}
.spine-ledger div{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:7px 0;border-top:1px solid var(--line2)}
.spine-ledger dt{font-size:.69rem;letter-spacing:.09em;text-transform:uppercase;color:var(--mut);line-height:1.3}
.spine-ledger dd{margin:0;font:400 1.02rem/1 var(--serif);color:var(--metal);white-space:nowrap}

/* pane */
.pane{margin-left:var(--spine);padding:0 clamp(28px,4.2vw,72px);min-width:0}
main,.foot{max-width:1060px;margin:0 auto}
main{counter-reset:sec;padding-top:clamp(44px,6vw,84px);display:block}
.lead{font-size:1.16rem;line-height:1.6;color:var(--mut);max-width:60ch}
.eyebrow{font:500 .74rem/1.3 var(--sans);letter-spacing:.24em;text-transform:uppercase;color:var(--metal);margin:0 0 26px;display:flex;align-items:center;gap:14px}
.eyebrow::before{content:"";width:44px;height:1px;background:var(--metal)}
.crumbs{display:flex;align-items:center;gap:12px;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--mut);margin:0 0 26px;min-width:0}
.crumbs a{color:var(--metal);text-decoration:none;flex:none}
.crumbs i{width:6px;height:6px;border:1px solid var(--metal2);transform:rotate(45deg);flex:none}
.crumbs span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.phead{padding-bottom:44px;border-bottom:1px solid var(--line);margin-bottom:52px;position:relative}
.phead::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:var(--line2)}
.phead h1{max-width:18ch}
.phead .lead{margin:26px 0 0}
.phead .acts{margin-top:32px}

/* sections */
.sec{counter-increment:sec;margin-top:clamp(64px,8vw,112px)}
.sec-h{display:flex;align-items:baseline;gap:22px;margin-bottom:38px;border-top:1px solid var(--line);padding-top:20px;position:relative}
.sec-h::after{content:"";position:absolute;left:0;top:4px;width:120px;height:1px;background:var(--line)}
.sec-h::before{content:counter(sec,upper-roman);font:italic 400 1.5rem/1 var(--serif);color:var(--metal2);min-width:46px;flex:none}
.sec-h h2{min-width:0}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(28px,4vw,60px);align-items:center}
.hero-txt{min-width:0}
.hero .lead{margin:28px 0 36px}
.hero-side{min-width:0;position:relative;display:flex;flex-direction:column;align-items:center;gap:26px}
.rosette{display:block;color:var(--metal);width:100%;max-width:340px;height:auto;opacity:.85}
.hero-side .rosette{animation:turn 240s linear infinite}
@keyframes turn{to{transform:rotate(360deg)}}
.ticks li{position:relative;padding:10px 0 10px 26px;border-top:1px solid var(--line2);font-size:.98rem;line-height:1.5}
.ticks li:last-child{border-bottom:1px solid var(--line2)}
.ticks li::before{content:"";position:absolute;left:3px;top:1.2em;width:7px;height:7px;border:1px solid var(--metal);transform:rotate(45deg)}
.hero-side .ticks{width:100%}
.hero-code{margin-top:clamp(40px,5vw,64px)}
.code-h{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px 20px;margin:0 0 14px;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--metal)}
.code-h code{letter-spacing:0;text-transform:none;color:var(--mut);font-size:.8rem;overflow-wrap:anywhere;min-width:0}

/* code */
.codebox{padding:8px 8px 8px}
.codetabs{display:flex;gap:4px;padding:6px 14px 0;border-bottom:1px solid var(--line);position:relative;z-index:1;overflow-x:auto}
.codetabs button{appearance:none;background:none;border:0;border-bottom:2px solid transparent;color:var(--mut);font:500 .74rem/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;padding:0 16px;min-height:46px;cursor:pointer;margin-bottom:-1px}
.codetabs button:hover{color:var(--ink)}
.codetabs button[aria-selected="true"]{color:var(--metal);border-bottom-color:var(--metal)}
pre.code{position:relative;margin:0;background:var(--deep);color:#dfe6d8;font:400 .84rem/1.7 var(--mono);padding:54px 22px 22px;overflow-x:auto;max-width:100%;border:1px solid var(--line2);tab-size:2;-webkit-overflow-scrolling:touch}
.codebox pre.code{border:0;background:transparent;z-index:1}
pre.code code{font-size:inherit;white-space:pre}
pre.code .k{color:var(--metal)}
pre.code .s{color:#d9dc9c}
pre.code .c{color:#8d9987;font-style:italic}
.copy{position:absolute;top:6px;right:8px;min-height:44px;min-width:44px;padding:0 14px;background:transparent;border:1px solid var(--line);color:var(--metal);font:500 .66rem/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;cursor:pointer}
.copy:hover{background:var(--metal);color:var(--bg)}

/* facts strip */
.facts{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));margin:clamp(36px,4vw,56px) 0 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.facts div{padding:22px 18px 20px;border-left:1px solid var(--line2);display:flex;flex-direction:column-reverse;justify-content:flex-end;gap:8px;min-width:0}
.facts div:first-child{border-left:0;padding-left:0}
.facts dd{margin:0;font:400 clamp(1.7rem,2.4vw,2.3rem)/1 var(--serif);color:var(--metal)}
.facts dt{font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--mut);line-height:1.4;overflow-wrap:break-word;hyphens:auto}
.facts.mini{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:34px;border-bottom:0}
.facts.mini div{padding:16px 12px;border-bottom:1px solid var(--line2)}
.facts.mini div:nth-child(3n+1){border-left:0;padding-left:0}
.facts.mini dd{font-size:1.5rem}

/* features */
.feats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));counter-reset:ft;border-top:1px solid var(--line2)}
.feats li{counter-increment:ft;padding:30px 28px 26px 0;border-bottom:1px solid var(--line2);min-width:0}
.feats li:not(:nth-child(3n+1)){padding-left:28px;border-left:1px solid var(--line2)}
.feats li::before{content:counter(ft,decimal-leading-zero);display:block;font:500 .72rem/1 var(--mono);color:var(--metal2);margin-bottom:18px;letter-spacing:.08em}
.feats h3,.steps h3,.uses h3,.ledger h3{margin-bottom:12px}
.feats p,.steps p,.uses p,.bens p,.ledger p{color:var(--mut);font-size:.98rem;margin:0}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 clamp(24px,3.4vw,48px);counter-reset:st}
.steps li{counter-increment:st;position:relative;padding-top:92px;min-width:0}
.steps li::before{content:counter(st);position:absolute;left:0;top:0;font:italic 400 4.6rem/1 var(--serif);color:var(--metal)}
.steps li::after{content:"";position:absolute;left:64px;right:0;top:44px;height:1px;background:linear-gradient(90deg,var(--line),transparent)}

/* use cases */
.uses{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.uses li{padding:36px 34px 32px;min-width:0}
.uses h3{color:var(--metal)}

/* prose */
.split{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(32px,4.4vw,64px);align-items:start}
.sidecard{position:sticky;top:40px;padding:34px 28px 30px;text-align:center}
.sidecard .seal{margin:0 auto 18px}
.sidecard h2{font-size:1.5rem;margin-bottom:12px}
.sidecard p{color:var(--mut);font-size:.95rem}
.sidecard .btn{width:100%;padding-left:12px;padding-right:12px}
.prose{min-width:0;max-width:74ch}
.prose.narrow{max-width:72ch}
.prose>*:first-child{margin-top:0}
.prose h2{margin:2.1em 0 .7em;padding-top:.9em;border-top:1px solid var(--line2);scroll-margin-top:90px}
.prose h3{margin:1.9em 0 .6em;color:var(--metal)}
.prose p,.prose li{color:#d6dccf}
.prose strong{color:var(--ink);font-weight:600}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:0}
.prose ul li{position:relative;padding-left:26px;margin-bottom:.5em}
.prose ul li::before{content:"";position:absolute;left:4px;top:.68em;width:6px;height:6px;border:1px solid var(--metal);transform:rotate(45deg)}
.prose ol{counter-reset:pl}
.prose ol li{counter-increment:pl;position:relative;padding-left:38px;margin-bottom:.6em}
.prose ol li::before{content:counter(pl,lower-roman) ".";position:absolute;left:0;top:0;font:italic 400 1.02rem/1.75 var(--serif);color:var(--metal)}
.prose pre.code{margin:1.5em 0}
.prose :not(pre)>code{background:var(--bg3);border:1px solid var(--line2);padding:.1em .4em;color:var(--metal);overflow-wrap:anywhere}
.prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:1.6em 0;font-size:.95rem;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.prose th,.prose td{padding:13px 18px 13px 0;text-align:left;border-bottom:1px solid var(--line2);vertical-align:top;min-width:120px}
.prose th{font:500 .7rem/1.3 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--metal)}
.prose blockquote{margin:1.6em 0;padding-left:24px;border-left:1px solid var(--metal);font:italic 400 1.25rem/1.5 var(--serif)}

/* faq */
.faq{border-top:1px solid var(--line2);max-width:860px}
.faq details{border-bottom:1px solid var(--line2)}
.faq summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 0;min-height:56px;cursor:pointer;font:400 1.3rem/1.3 var(--serif)}
.faq summary::-webkit-details-marker{display:none}
.faq summary span{min-width:0}
.faq summary::after{content:"";flex:none;width:17px;height:17px;background:linear-gradient(var(--metal),var(--metal)) center/100% 1px no-repeat,linear-gradient(var(--metal),var(--metal)) center/1px 100% no-repeat;transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details[open] summary{color:var(--metal)}
.faq .ans{padding:0 44px 24px 0;color:var(--mut);max-width:70ch}
.faq .ans p{margin:0}

/* cta band */
.cta{margin-top:clamp(72px,9vw,120px);padding:clamp(40px,5vw,68px) clamp(26px,5vw,68px);overflow:hidden}
.cta-in{position:relative;z-index:1;max-width:560px}
.cta h2{margin-bottom:16px}
.cta p{color:var(--mut)}
.cta .acts{margin-top:28px}
.cta-ros{position:absolute;right:-70px;top:50%;width:380px;max-width:none;margin-top:-190px;opacity:.5}

/* key page */
.keytop{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,450px);grid-template-areas:"head form" "lead form";grid-template-rows:auto 1fr;gap:26px clamp(32px,5vw,72px);align-items:start}
.k-head{grid-area:head;min-width:0}
.k-head h1{font-size:clamp(2.1rem,3.5vw,3.3rem)}
.k-lead{grid-area:lead;min-width:0}
.k-form{grid-area:form;min-width:0}
.form{padding:14px 34px 34px;border-color:var(--metal2)}
.form>*{position:relative;z-index:1}
.tabs2{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line);margin:0 -14px 26px}
.tabs2 button{appearance:none;background:none;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;min-height:54px;padding:6px 8px;color:var(--mut);font:500 .76rem/1.2 var(--sans);letter-spacing:.15em;text-transform:uppercase;cursor:pointer}
.tabs2 button[aria-selected="true"]{color:var(--metal);border-bottom-color:var(--metal)}
.msg{font-size:.92rem;line-height:1.45;color:var(--metal)}
.msg:not(:empty){border:1px solid var(--line);padding:12px 14px;margin-bottom:20px;background:var(--bg3)}
.msg.err{color:var(--err);border-color:rgba(244,168,145,.5);background:rgba(244,168,145,.07)}
.row{margin-bottom:20px}
.row label,.calc label{display:block;font:500 .7rem/1.3 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--metal);margin-bottom:9px}
.row input,.calc input{width:100%;min-height:52px;padding:10px 16px;background:var(--deep);border:1px solid var(--line);border-radius:0;color:var(--ink);font:400 1.02rem/1.2 var(--sans);appearance:none;-moz-appearance:textfield}
.row input:hover,.calc input:hover{border-color:var(--metal2)}
.row input:focus,.calc input:focus{outline:0;border-color:var(--metal);box-shadow:0 0 0 1px var(--metal)}
.note{font-size:.82rem;line-height:1.5;color:var(--mut);margin:9px 0 0}
.form form .btn{width:100%;margin-top:8px;min-height:56px;font-size:.82rem}
.form form>.note{text-align:center;margin-top:20px}
.keyout{display:none}
.keyout.on{display:block}
.keyout h3{font-size:1.6rem;margin:10px 0 18px}
.keybox{display:flex;align-items:center;gap:12px;background:var(--deep);border:1px dashed var(--metal2);padding:10px 10px 10px 16px}
.keybox span{flex:1;min-width:0;font:400 .86rem/1.5 var(--mono);color:var(--metal);overflow-wrap:anywhere}
.keyout p{font-size:.93rem;line-height:1.9;margin:16px 0 0}
.keyout p.note{font-size:.82rem;line-height:1.5;margin-top:10px}
.keyout strong{font-weight:500;color:var(--mut);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase}
.keyout code{color:var(--metal);overflow-wrap:anywhere}
.mut{color:var(--mut)}
.keyout .acts{margin-top:22px;gap:12px}
.bens{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.bens li{padding:30px 24px 28px;border-left:1px solid var(--line2);min-width:0}
.bens li:first-child{border-left:0;padding-left:0}
.bens h2{font-size:1.3rem;line-height:1.2;margin-bottom:12px;color:var(--metal)}
.sec-ben{margin-top:clamp(48px,6vw,80px);counter-increment:none}

/* docs */
.endpoint{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 0}
.endpoint code{border:1px solid var(--line);padding:8px 14px;color:var(--metal);font-size:.84rem;overflow-wrap:anywhere;min-width:0}
.doc-grid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:clamp(32px,4.4vw,60px);align-items:start}
.doc-grid .toc{order:2;position:sticky;top:36px}
.toc{padding:26px 24px 22px}
.toc-h{font:500 .7rem/1.3 var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--metal);margin:0 0 12px}
.toc ol{counter-reset:tc;position:relative;z-index:1}
.toc li{counter-increment:tc;border-top:1px solid var(--line2)}
.toc a{display:flex;gap:12px;align-items:baseline;padding:11px 0;min-height:44px;color:var(--ink);text-decoration:none;font-size:.9rem;line-height:1.35}
.toc a::before{content:counter(tc,upper-roman);font:italic 400 .9rem/1 var(--serif);color:var(--metal2);min-width:24px;flex:none}
.toc a:hover{color:var(--metal)}

/* pricing */
.board{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));margin:0;padding:8px}
.board div{grid-column:span 2;padding:28px 26px 26px;border-top:1px solid var(--line2);border-left:1px solid var(--line2);min-width:0;position:relative;z-index:1}
.board div:nth-child(-n+2){grid-column:span 3;border-top:0;padding:40px 30px 36px}
.board div:nth-child(1),.board div:nth-child(3){border-left:0}
.board dd{margin:0 0 12px;font:400 2.3rem/1 var(--serif);color:var(--metal)}
.board div:nth-child(-n+2) dd{font-size:clamp(3.4rem,6vw,5.2rem);letter-spacing:-.02em}
.board dt{font-size:.74rem;letter-spacing:.15em;text-transform:uppercase;color:var(--mut);line-height:1.4}
.calc-wrap{padding:38px 36px 36px}
.calc{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;align-items:end;position:relative;z-index:1}
.calc>div{min-width:0}
.calc input{font-family:var(--mono);font-size:1rem}
.calc output{display:block;min-height:52px;font:400 clamp(2.4rem,3.6vw,3.2rem)/52px var(--serif);color:var(--metal);border-bottom:1px solid var(--metal);overflow-wrap:anywhere}
.ledger{counter-reset:lg;border-top:1px solid var(--line2)}
.ledger li{counter-increment:lg;display:grid;grid-template-columns:54px minmax(0,1fr) minmax(0,1.5fr);gap:8px 28px;padding:28px 0;border-bottom:1px solid var(--line2);align-items:baseline}
.ledger li::before{content:counter(lg,lower-alpha) ".";font:italic 400 1.5rem/1 var(--serif);color:var(--metal2)}
.ledger h3{margin:0}

/* article */
.dateline{margin:26px 0 0;font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--mut)}
.dateline time{color:var(--metal);margin-left:6px}
.art-top{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:26px;align-items:start;margin-bottom:clamp(48px,6vw,76px)}
.takeaways{padding:34px 34px 28px}
.takeaways h2{font-size:1.7rem;font-style:italic;margin-bottom:18px;color:var(--metal)}
.takeaways ul{position:relative;z-index:1}
.longread{max-width:70ch;margin:0 auto;font-size:1.125rem;line-height:1.78}
.longread h2{font-size:clamp(1.8rem,2.6vw,2.3rem);border-top:0;padding-top:0;margin-top:2.3em}
.longread h2::before{content:"";display:block;width:54px;height:1px;background:var(--metal);margin-bottom:24px;box-shadow:0 5px 0 var(--line)}
.longread>p:first-of-type::first-letter{font:400 4.6rem/.82 var(--serif);float:left;padding:8px 14px 0 0;color:var(--metal)}

/* 404 */
.nf{text-align:center;padding:20px 0 40px;display:flex;flex-direction:column;align-items:center}
.nf-ros{max-width:240px;margin-bottom:36px}
.nf .lead{margin:22px auto 34px}
.nf .acts{justify-content:center}

/* footer */
.foot{margin-top:clamp(80px,10vw,130px);padding:44px 0 46px;border-top:1px solid var(--line);position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:28px 48px}
.foot::before{content:"";position:absolute;left:0;right:0;top:5px;height:1px;background:var(--line2)}
.foot-b{min-width:0}
.foot-n{font:400 1.3rem/1.1 var(--serif);margin:14px 0 6px;overflow-wrap:anywhere}
.foot-t{font:italic 400 1rem/1.4 var(--serif);color:var(--mut);margin:0}
.foot-l{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;align-content:start}
.foot-l a{display:flex;align-items:center;min-height:44px;color:var(--ink);text-decoration:none;font-size:.9rem;border-bottom:1px solid var(--line2);overflow-wrap:anywhere}
.foot-l a:hover{color:var(--metal)}
.legal{grid-column:1/-1;margin:8px 0 0;font-size:.82rem;color:var(--mut)}

/* responsive */
@media (max-width:1240px){
.doc-grid{grid-template-columns:minmax(0,1fr)}
.doc-grid .toc{order:0;position:relative;top:0}
.split{grid-template-columns:minmax(0,1fr)}
.sidecard{position:relative;top:0;max-width:460px}
.bens{grid-template-columns:repeat(2,minmax(0,1fr))}
.bens li:nth-child(odd){border-left:0;padding-left:0}
.bens li:nth-child(n+3){border-top:1px solid var(--line2)}
.keytop{grid-template-columns:minmax(0,1fr) minmax(0,420px)}
}
@media (max-width:1023px){
html{scroll-padding-top:76px}
.spine{position:sticky;top:0;bottom:auto;width:auto;padding:0;display:block;overflow:visible;border-right:0;border-bottom:1px solid var(--line)}
.spine::after{position:absolute;left:0;right:0;top:auto;bottom:-5px;width:auto;height:1px}
.spine-top{display:flex;align-items:center;gap:10px;padding:8px 16px;min-height:62px;text-align:left}
.logo{flex-direction:row;gap:10px;margin-right:auto;min-width:0;min-height:44px}
.seal{width:40px;height:40px}
.logo-t{font-size:1.05rem}
.spine-tag{display:none}
.top-key{display:inline-flex;box-shadow:none;flex:none}
.nav-key{display:none}
.burger{display:inline-flex;align-items:center;justify-content:center;flex:none;width:46px;height:46px;background:transparent;border:1px solid var(--line);padding:0;cursor:pointer}
.burger span,.burger span::before,.burger span::after{display:block;width:20px;height:1px;background:var(--metal);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.nav{display:none;margin:0;padding:0 20px 22px;max-height:calc(100vh - 64px);overflow-y:auto;border-top:1px solid var(--line2)}
.nav.open{display:block}
.nav ol{border-top:0}
.spine-ledger{padding-top:10px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}
.pane{margin-left:0;padding:0 clamp(18px,4vw,40px)}
.keytop{grid-template-columns:minmax(0,1fr);grid-template-areas:"head" "form" "lead"}
.k-form{max-width:520px}
}
@media (max-width:860px){
.hero{grid-template-columns:minmax(0,1fr)}
.hero-side .rosette{display:none}
.facts{grid-template-columns:repeat(2,minmax(0,1fr));border-bottom:0}
.facts div{border-bottom:1px solid var(--line2);padding-left:14px}
.facts div:nth-child(odd){border-left:0;padding-left:0}
.facts div:last-child:nth-child(odd){grid-column:1/-1}
.facts.mini{grid-template-columns:repeat(2,minmax(0,1fr))}
.facts.mini div:nth-child(3n+1){border-left:1px solid var(--line2);padding-left:14px}
.facts.mini div:nth-child(odd){border-left:0;padding-left:0}
.feats{grid-template-columns:minmax(0,1fr)}
.feats li,.feats li:not(:nth-child(3n+1)){padding:24px 0 22px;border-left:0}
.steps{grid-template-columns:minmax(0,1fr);gap:34px}
.steps li{padding:0 0 0 76px;min-height:70px}
.steps li::before{font-size:3.6rem}
.steps li::after{display:none}
.uses{grid-template-columns:minmax(0,1fr);gap:20px}
.uses li{padding:30px 26px 26px}
.art-top{grid-template-columns:minmax(0,1fr)}
.board div,.board div:nth-child(-n+2){grid-column:span 6;border-left:0;padding:24px 20px}
.board div:nth-child(2){border-top:1px solid var(--line2)}
.board div:nth-child(-n+2) dd{font-size:3.3rem}
.calc{grid-template-columns:minmax(0,1fr)}
.calc-wrap{padding:30px 24px}
.ledger li{grid-template-columns:40px minmax(0,1fr)}
.ledger li p{grid-column:2}
.foot{grid-template-columns:minmax(0,1fr)}
.cta-ros{opacity:.22;right:-150px}
.faq summary{font-size:1.16rem}
.faq .ans{padding-right:0}
.longread{font-size:1.06rem}
.phead{margin-bottom:40px;padding-bottom:34px}
}
@media (max-width:520px){
body{font-size:1rem}
.logo-t{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.top-key{padding:8px 13px;letter-spacing:.09em;font-size:.68rem}
.form{padding:10px 22px 26px}
.tabs2{margin:0 -8px 22px}
.hero .acts .btn,.phead .acts .btn,.cta .acts .btn{width:100%}
.bens{grid-template-columns:minmax(0,1fr)}
.bens li,.bens li:first-child{border-left:0;padding:24px 0;border-top:1px solid var(--line2)}
.bens li:first-child{border-top:0}
.foot-l{grid-template-columns:minmax(0,1fr)}
.takeaways{padding:28px 24px 22px}
.keybox{flex-direction:column;align-items:stretch}
pre.code{font-size:.78rem;padding-left:16px;padding-right:16px}
.sec-h{gap:14px}
.sec-h::before{min-width:34px}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
*,*::before,*::after{animation:none!important;transition:none!important}
}