:root{--paper:#f3f1e9;--paper-deep:#e9e7dd;--white:#faf9f5;--ink:#1c292d;--muted:#506168;--line:#b9bfb9;--blue:#24556b;--blue-dark:#163c4d;--focus:#b35725;--sans:'IBM Plex Sans','Helvetica Neue',sans-serif;--mono:'IBM Plex Mono','Courier New',monospace;--site:1280px;--gutter:clamp(20px,4.4vw,72px)}
*{box-sizing:border-box}
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a{color:inherit;text-decoration:none}
a:hover{color:var(--blue)}
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.skip-link{position:absolute;left:12px;top:-60px;background:var(--ink);color:var(--paper);padding:8px 12px;z-index:100}
.skip-link:focus{top:12px;color:var(--paper)}
img,svg{max-width:100%}
.architecture img{display:block;width:100%;height:auto}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
::selection{background:#cad9dc;color:var(--ink)}
.shell{width:min(calc(100% - var(--gutter)*2),var(--site));margin-inline:auto}
.eyebrow,.meta,.tag,.overline,.index-num,.section-kicker,.footer-label,.field-label{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.045em;line-height:1.5;text-transform:uppercase}
.muted{color:var(--muted)}
.site-header{border-bottom:1px solid var(--ink);background:var(--paper);position:relative;z-index:10}
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.brand small{font-family:var(--mono);font-size:10px;font-weight:500;letter-spacing:0;margin-left:8px;align-self:flex-end;padding-bottom:2px;color:var(--muted)}
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.nav-contact{border:1px solid var(--ink);padding:10px 13px}
.nav-contact:hover{background:var(--ink);color:var(--paper)}
.mobile-menu{display:none}
.hero{padding:clamp(62px,8.2vw,118px) 0 76px;border-bottom:1px solid var(--ink)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.42fr) minmax(250px,.58fr);gap:5vw;align-items:end}
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h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(52px,6.35vw,98px);line-height:.99;letter-spacing:-.067em;font-weight:600;max-width:1000px;margin-bottom:0}
.hero-side{padding-bottom:4px;border-top:1px solid var(--ink);padding-top:22px}
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.text-link:after{content:'↗';font-size:16px;line-height:1}
.text-link:hover{gap:19px}
.diagram-section{padding:34px 0 72px}
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.section-line p{margin:0;color:var(--muted);font-family:var(--mono);font-size:11px;text-transform:uppercase}
.architecture{background:var(--white);border:1px solid var(--line);padding:clamp(14px,2.7vw,36px);margin:0}
.architecture svg{display:block;width:100%;height:auto}
.architecture figcaption{display:flex;justify-content:space-between;gap:30px;border-top:1px solid var(--line);padding-top:13px;margin-top:18px;color:var(--muted);font-family:var(--mono);font-size:11px;line-height:1.6}
.architecture figcaption strong{color:var(--ink);font-weight:500}
.diagram-mobile{display:none!important}
.section{padding:95px 0;border-top:1px solid var(--line)}
.section-tight{padding:67px 0;border-top:1px solid var(--line)}
.section-intro{display:grid;grid-template-columns:1fr 2fr;gap:5vw;margin-bottom:52px}
.section-intro .section-kicker{margin:7px 0 0;color:var(--blue)}
h2{font-size:clamp(34px,3.9vw,60px);line-height:1.08;letter-spacing:-.052em;font-weight:600;max-width:800px;margin-bottom:0}
h3{font-size:clamp(22px,2vw,30px);line-height:1.15;letter-spacing:-.035em;font-weight:600;margin-bottom:12px}
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.cap-row h3{margin:0}.cap-row p{margin:0;max-width:580px;color:var(--muted)}
.arrow{font-family:var(--mono);font-size:19px;color:var(--blue)}
.proof-band{background:var(--ink);color:var(--paper);padding:75px 0}
.proof-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:8vw}
.proof-grid .section-kicker{color:#a5c3cc;margin:0 0 19px}
.proof-grid h2{font-size:clamp(33px,3.5vw,52px)}
.proof-grid p{max-width:650px;color:#d1d8d6;font-size:19px;margin-bottom:24px}
.proof-grid .text-link{color:#e3f0ee}
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.case-item{display:grid;grid-template-columns:minmax(180px,.65fr) minmax(0,1.35fr);gap:5vw;padding:30px 0;border-bottom:1px solid var(--line)}
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.case-item .case-detail{color:var(--muted)}
.notes-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 50px;border-top:1px solid var(--ink)}
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.note-link h3{font-size:24px;margin:10px 0}.note-link p{color:var(--muted);font-size:16px;max-width:520px;margin:0}
.note-link:hover h3{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}
.note-meta{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.03em;color:var(--blue)}
.cta-band{padding:70px 0;border-top:1px solid var(--ink);background:var(--paper-deep)}
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.cta-grid h2{max-width:690px}.cta-grid p{font-size:18px;color:var(--muted);margin:0 0 23px}
.page-head{padding:65px 0 72px;border-bottom:1px solid var(--ink)}
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.page-head h1{font-size:clamp(48px,5.65vw,82px);max-width:1050px}
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.page-head .lede{font-size:19px;line-height:1.48;border-top:1px solid var(--ink);padding-top:20px;margin:0;max-width:390px}
.prose{max-width:735px}.prose p{font-size:18px;line-height:1.65;margin:0 0 23px}.prose h2{font-size:36px;margin:55px 0 21px}
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.detail-grid{display:grid;grid-template-columns:1fr 2fr;gap:5vw}
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.detail-grid>div{max-width:830px}
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.step{counter-increment:step;display:grid;grid-template-columns:80px 1fr 1.15fr;gap:36px;padding:30px 0;border-bottom:1px solid var(--line)}
.step:before{content:counter(step,decimal-leading-zero);font-family:var(--mono);font-size:12px;color:var(--blue);padding-top:5px}.step h3{margin:0}.step p{margin:0;color:var(--muted)}
.principle{display:grid;grid-template-columns:1fr 2fr;gap:5vw;padding:28px 0;border-bottom:1px solid var(--line)}
.principle:first-child{border-top:1px solid var(--ink)}.principle h3{margin:0}.principle p{margin:0;max-width:700px;color:var(--muted)}
.aside-callout{border-left:3px solid var(--blue);padding:0 0 0 25px;margin:40px 0}.aside-callout p{font-size:20px;line-height:1.45;max-width:650px;margin:0}
.draft-list{border-top:1px solid var(--ink)}
.draft-item{display:grid;grid-template-columns:180px 1fr;gap:5vw;padding:32px 0;border-bottom:1px solid var(--line)}
.draft-item .note-meta{padding-top:6px}.draft-item h2{font-size:clamp(27px,2.7vw,40px);margin:0 0 13px}.draft-item p{max-width:680px;color:var(--muted);margin:0;font-size:17px}
.form-wrap{display:grid;grid-template-columns:.7fr 1.3fr;gap:7vw}
.form-intro p{font-size:18px;max-width:350px}.form-intro a{text-decoration:underline;text-underline-offset:4px}
.contact-form{border-top:1px solid var(--ink)}
.form-row{padding:17px 0 20px;border-bottom:1px solid var(--line)}
.form-row label{display:block;font-family:var(--mono);font-size:11px;text-transform:uppercase;color:var(--blue);margin-bottom:10px;font-weight:500}
.form-row input,.form-row textarea{width:100%;border:0;background:transparent;color:var(--ink);padding:7px 0;outline:none;border-radius:0;font-size:18px}
.form-row input:focus,.form-row textarea:focus{box-shadow:inset 0 -2px var(--blue)}
.form-row textarea{min-height:110px;resize:vertical}
.form-row input::placeholder,.form-row textarea::placeholder{color:#667278;opacity:1}
.form-help{font-family:var(--mono);font-size:11px;color:var(--muted);margin:16px 0 24px}
.button{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);padding:16px 20px;font-family:var(--mono);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.02em;min-width:230px}
.button:hover{background:var(--blue-dark);border-color:var(--blue-dark);color:white}.button:active{transform:translateY(1px)}.button:disabled{opacity:.5;cursor:not-allowed}
.button span:last-child{font-size:17px;line-height:1}
.site-footer{background:var(--ink);color:var(--paper);padding:50px 0 24px}
.footer-top{display:grid;grid-template-columns:1.3fr .7fr 1fr;gap:5vw;padding-bottom:75px}
.footer-top .brand{font-size:34px}.footer-top .brand-mark{width:35px;height:35px}.footer-top p{max-width:320px;color:#c6d1cf;margin:18px 0 0}
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.footer-label{color:#9db1b5;margin:0 0 15px}
.footer-bottom{border-top:1px solid #617075;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#b4c1bf;font-family:var(--mono);font-size:10px;text-transform:uppercase}
@media(max-width:1050px){.desktop-nav{gap:12px}.desktop-nav a{font-size:10px}.brand small{display:none}.hero-grid{grid-template-columns:1.2fr .8fr}.cap-row{grid-template-columns:.8fr 1.2fr auto}}
@media(max-width:760px){body{font-size:16px}.header-inner{min-height:66px}.desktop-nav{display:none}.mobile-menu{display:block;position:relative}.mobile-menu summary{list-style:none;font-family:var(--mono);font-size:12px;text-transform:uppercase;cursor:pointer;border:1px solid var(--ink);padding:8px 12px}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu[open] summary{background:var(--ink);color:var(--paper)}.mobile-nav{position:absolute;right:0;top:43px;display:grid;min-width:230px;background:var(--paper);border:1px solid var(--ink);box-shadow:0 10px 20px #1c292d1c;padding:11px 17px}.mobile-nav a{padding:12px 3px;border-bottom:1px solid var(--line)}.mobile-nav a:last-child{border:0}.hero{padding:56px 0}.hero-grid,.page-head-grid,.proof-grid,.cta-grid,.form-wrap{grid-template-columns:1fr;gap:33px}.hero h1{max-width:660px}.hero-side{max-width:580px}.page-head{padding:54px 0 59px}.page-head h1{max-width:700px}.page-head .lede{max-width:600px}.section{padding:68px 0}.section-tight{padding:55px 0}.section-intro,.detail-grid{grid-template-columns:1fr;gap:16px}.section-intro{margin-bottom:32px}.section-intro .section-kicker{margin:0}.detail-grid>aside{padding:0}.cap-row{grid-template-columns:1fr auto;gap:14px}.cap-row p{grid-column:1 / -1}.cap-row .arrow{grid-column:2;grid-row:1}.case-item,.principle,.draft-item{grid-template-columns:1fr;gap:11px}.step{grid-template-columns:48px 1fr;gap:15px}.step p{grid-column:2}.notes-grid{gap:0 25px}.footer-top{grid-template-columns:1fr 1fr;gap:35px}.footer-top>div:first-child{grid-column:1/-1}.footer-bottom{flex-wrap:wrap}.diagram-desktop{display:none!important}.diagram-mobile{display:block!important}.architecture figcaption{display:block}.architecture figcaption span{display:block;margin-top:6px}}
@media(max-width:520px){:root{--gutter:20px}.brand{font-size:22px}.hero h1{font-size:clamp(46px,12vw,64px)}.page-head h1{font-size:clamp(43px,11vw,59px)}.hero-side p,.page-head .lede{font-size:18px}.section-intro h2,.cta-grid h2{font-size:36px}.notes-grid,.two-col{grid-template-columns:1fr}.spec-row{grid-template-columns:1fr;gap:5px}.proof-band{padding:60px 0}.architecture{padding:12px}.footer-top{grid-template-columns:1fr}.footer-top>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.text-link:hover{gap:13px}.button:active{transform:none}}