@font-face{font-family:Inter;src:url('/assets/inter-400-cyrillic.woff2') format('woff2');font-weight:400;font-display:swap;unicode-range:U+0400-052F}
@font-face{font-family:Inter;src:url('/assets/inter-400-latin.woff2') format('woff2');font-weight:400;font-display:swap;unicode-range:U+0000-024F}
@font-face{font-family:Inter;src:url('/assets/inter-500-cyrillic.woff2') format('woff2');font-weight:500;font-display:swap;unicode-range:U+0400-052F}
@font-face{font-family:Inter;src:url('/assets/inter-500-latin.woff2') format('woff2');font-weight:500;font-display:swap;unicode-range:U+0000-024F}
@font-face{font-family:Inter;src:url('/assets/inter-600-cyrillic.woff2') format('woff2');font-weight:600;font-display:swap;unicode-range:U+0400-052F}
@font-face{font-family:Inter;src:url('/assets/inter-600-latin.woff2') format('woff2');font-weight:600;font-display:swap;unicode-range:U+0000-024F}

/* Editorial composition; existing Ellirium palette and locally hosted type. */
:root{--content-width:1280px;--gutter:clamp(22px,5vw,80px);--paper:var(--color-text-primary);--ink:var(--color-canvas);--paper-muted:#4c5667;--paper-line:#bac3cf;--paper-field:#f7f9fc;--paper-error:#a22230;--paper-success:#176746;--paper-warning:#745013}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--color-canvas);color:var(--color-text-primary);font:400 15px/1.65 var(--font-sans);-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit}
button,summary{cursor:pointer}
a{color:inherit;text-decoration:none}
button{color:inherit}
svg{display:block}
button svg,a svg,summary svg{width:20px;height:20px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.5}
h1,h2,h3,p{margin:0}
h1,h2,h3{font-weight:500;line-height:1.12;letter-spacing:-.04em}
h1{font-size:clamp(40px,4.8vw,64px)}
h2{font-size:clamp(28px,3vw,40px)}
h3{font-size:18px;letter-spacing:-.02em}
.container{max-width:calc(var(--content-width) + var(--gutter)*2);padding-inline:var(--gutter);margin-inline:auto;width:100%}
.skip-link{position:fixed;top:-80px;left:20px;background:var(--color-accent);color:var(--ink);padding:12px 20px;z-index:100}
.skip-link:focus{top:12px}
:focus-visible{outline:2px solid var(--color-accent-hover);outline-offset:5px}
main:focus,h1[tabindex='-1']:focus{outline:none}
.site-header{position:sticky;top:0;z-index:40;background:var(--color-canvas);border-bottom:1px solid var(--color-border-strong)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:88px;gap:32px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:27px;line-height:1;font-weight:600;letter-spacing:-.055em;flex-shrink:0}
.brand img{width:36px;height:36px;object-fit:contain}
.brand-dot{color:var(--color-accent)}
.primary-nav{display:flex;align-items:center;gap:32px}
.nav-link,.service-links summary{font-size:14px;color:var(--color-text-secondary);padding:14px 0;position:relative;white-space:nowrap}
.nav-link:hover,.nav-link[aria-current],.service-links[open] summary{color:var(--color-text-primary)}
.nav-link[aria-current]::after{content:'';height:2px;width:18px;background:var(--color-accent);position:absolute;bottom:4px;left:0}
.nav-link.header-contact{display:flex;align-items:center;gap:24px;border:1px solid var(--color-border-strong);padding:10px 16px;color:var(--color-text-primary);margin-left:12px}
.header-contact:hover{border-color:var(--color-accent)}
.header-contact[aria-current]::after{display:none}
.service-links{position:relative}
.service-links summary{display:flex;align-items:center;gap:7px;list-style:none}
.service-links summary::-webkit-details-marker{display:none}
.service-links summary svg{width:14px}
.service-menu{position:absolute;top:100%;right:-24px;width:250px;background:var(--color-surface-elevated);border:1px solid var(--color-border-strong);padding:8px;box-shadow:0 20px 50px #0005}
.service-menu a{display:flex;flex-direction:column;padding:12px 16px}
.service-menu a:hover{background:var(--color-surface-interactive)}
.service-menu strong{font-size:14px;font-weight:500}
.service-menu span{font-size:12px;color:var(--color-text-secondary);margin-top:3px}
.menu-toggle{display:none}
.eyebrow{display:flex;align-items:center;gap:12px;font-size:13px;font-weight:500;color:var(--color-accent-hover);margin-bottom:24px}
.small-mark{width:7px;height:7px;background:var(--color-accent);display:inline-block}
.hero{display:grid;grid-template-columns:1.3fr 1fr;align-items:center;gap:clamp(32px,5vw,80px);padding-top:72px;padding-bottom:72px}
.hero h1{font-size:clamp(40px,4.45vw,64px);line-height:1.1;letter-spacing:-.045em}
.hero-description{font-size:17px;line-height:1.7;color:var(--color-text-secondary);max-width:525px;margin-top:28px}
.hero-actions{display:flex;align-items:center;gap:28px;margin-top:32px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;gap:28px;min-height:50px;padding:13px 24px;background:var(--color-accent);border:1px solid var(--color-accent);border-radius:3px;color:var(--color-text-on-accent);font-size:14px;font-weight:600;line-height:1.5;transition:background .15s,border-color .15s}
.button:hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover)}
.button:disabled{cursor:wait;opacity:.65}
.text-link{display:inline-block;font-size:14px;font-weight:500;border-bottom:1px solid var(--color-border-strong);padding-bottom:4px}
.text-link:hover{border-color:var(--color-accent);color:var(--color-accent-hover)}
.infrastructure-figure{margin:0;position:relative;align-self:stretch;display:flex;flex-direction:column;justify-content:center;min-width:0}
.figure-heading{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--color-border-strong);font-size:11px;color:var(--color-text-secondary)}
.figure-cross{font-size:20px;color:var(--color-accent)}
.system-drawing{width:100%;height:auto;max-height:420px;color:var(--color-text-secondary)}
.drawing-connections{stroke:var(--color-text-muted);stroke-width:1}
.drawing-layer{stroke:var(--color-accent);stroke-width:1.15;fill:var(--color-surface-elevated)}
.drawing-layer path+path{fill:none}
.drawing-bottom{fill:var(--color-surface);stroke:var(--color-text-muted)}
.drawing-middle{stroke:var(--color-text-secondary)}
.drawing-detail{stroke:var(--color-accent-hover)}
.drawing-node{fill:var(--color-accent-hover)}
.infrastructure-figure figcaption{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:10px;border-top:1px solid var(--color-border-strong);padding-top:14px;color:var(--color-text-secondary)}
.discipline-strip{border-block:1px solid var(--color-border-strong)}
.discipline-strip>div{display:grid;grid-template-columns:repeat(4,1fr)}
.discipline-strip span{padding:22px 0;font-size:13px;color:var(--color-text-secondary);display:flex;align-items:center;justify-content:center;border-right:1px solid var(--color-border-strong)}
.discipline-strip span:first-child{justify-content:flex-start}
.discipline-strip span:last-child{border:0}
.expertise{display:grid;grid-template-columns:.85fr 1.15fr;gap:100px;padding-block:100px}
.section-intro h2{margin-bottom:24px}
.section-intro>p:not(.eyebrow){color:var(--color-text-secondary);max-width:350px;margin-bottom:24px}
.expertise-list{border-top:1px solid var(--color-border-strong)}
.expertise-list a{display:grid;grid-template-columns:1fr 24px;gap:12px;padding:24px 0;border-bottom:1px solid var(--color-border-strong)}
.expertise-list h3{font-size:22px;line-height:1.3;margin-bottom:8px}
.expertise-list p{color:var(--color-text-secondary);font-size:13px;max-width:460px}
.expertise-list svg{width:20px;height:20px;stroke:var(--color-text-muted);fill:none;stroke-width:1.5;margin-top:6px}
.expertise-list a:hover h3,.expertise-list a:hover svg{color:var(--color-accent-hover);stroke:var(--color-accent-hover)}
.approach-band{background:var(--color-surface);border-block:1px solid var(--color-border-strong)}
.approach-band-inner{display:grid;grid-template-columns:1fr 1fr;column-gap:100px;padding-block:64px}
.approach-band .eyebrow{grid-column:1/-1}
.approach-band p:not(.eyebrow){color:var(--color-text-secondary);margin-bottom:24px}
.page-section{padding-top:64px;padding-bottom:88px;min-height:calc(100vh - 290px)}
.page-heading{display:flex;gap:48px;justify-content:space-between;align-items:flex-end;margin-bottom:56px}
.page-deck{max-width:350px;color:var(--color-text-secondary);padding-bottom:6px;font-size:16px;line-height:1.75}
.services-workspace{display:grid;grid-template-columns:260px minmax(0,1fr);border-top:1px solid var(--color-border-strong);gap:48px;padding-top:32px}
.service-tabs{align-self:start;display:flex;flex-direction:column;gap:4px;position:sticky;top:120px}
.service-tabs button{display:flex;align-items:center;justify-content:space-between;gap:8px;text-align:left;min-height:58px;border:0;border-left:2px solid transparent;border-radius:0;padding:16px;background:transparent;font-size:13px;color:var(--color-text-secondary)}
.service-tabs button svg{width:16px;opacity:0}
.service-tabs button:hover{color:var(--color-text-primary);background:var(--color-surface)}
.service-tabs button[aria-selected='true']{color:var(--color-text-primary);background:var(--color-accent-subtle);border-left-color:var(--color-accent)}
.service-tabs button[aria-selected='true'] svg{opacity:1;color:var(--color-accent)}
.service-detail{padding:6px 0 0;min-width:0}
.service-detail h2{font-size:clamp(27px,3vw,38px);margin-bottom:20px}
.service-lead{font-size:16px;line-height:1.85;color:var(--color-text-secondary);max-width:800px}
.service-scope{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding-block:32px;margin-top:8px}
.service-scope h3,.service-prepare h3{font-size:13px;letter-spacing:0;margin-bottom:16px;color:var(--color-text-primary)}
.service-scope ul{padding:0;margin:0;list-style:none;color:var(--color-text-secondary);font-size:13px;line-height:1.8}
.service-scope li{padding-left:16px;position:relative;margin-top:12px}
.service-scope li::before{content:'';position:absolute;width:4px;height:4px;background:var(--color-accent);left:0;top:10px}
.service-case{border-left:2px solid var(--color-accent);padding:20px 24px;background:var(--color-surface);margin:8px 0 28px}
.case-label{font-size:11px;color:var(--color-accent-hover);margin-bottom:10px}
.service-case h3{font-size:19px;line-height:1.35;margin-bottom:10px}
.service-case p:last-child{font-size:13px;color:var(--color-text-secondary);line-height:1.8}
.service-prepare{border-top:1px solid var(--color-border-strong);padding-top:24px}
.service-prepare p{font-size:13px;color:var(--color-text-secondary)}
.detail-cta{margin-top:24px}
.about-intro{display:grid;grid-template-columns:1.3fr 1fr;gap:72px;margin-bottom:64px}
.large-copy{font-size:22px;line-height:1.6;letter-spacing:-.02em}
.about-intro>p:last-child{color:var(--color-text-secondary);line-height:1.85}
.method{border-top:1px solid var(--color-border-strong);display:grid;grid-template-columns:1fr 1fr;column-gap:64px}
.method article{padding:36px 0;border-bottom:1px solid var(--color-border-strong);display:flex;gap:24px}
.method-step{color:var(--color-accent);font-size:12px;padding-top:6px}
.method h2{font-size:24px;margin-bottom:14px}
.method p{color:var(--color-text-secondary);font-size:14px;line-height:1.8}
.inline-invitation{margin-top:56px;padding-top:32px;border-top:1px solid var(--color-border-strong);display:flex;align-items:center;justify-content:space-between;gap:32px}
.inline-invitation h2{font-size:24px;max-width:520px}
.inline-invitation p{color:var(--color-text-secondary)}
.guides{border-top:1px solid var(--color-border-strong)}
.guides details{border-bottom:1px solid var(--color-border-strong)}
.guides summary{display:grid;grid-template-columns:210px 1fr 24px;gap:24px;align-items:center;list-style:none;padding:28px 0;font-size:22px;line-height:1.35;letter-spacing:-.025em}
.guides summary::-webkit-details-marker{display:none}
.guide-kind{font-size:12px;color:var(--color-text-secondary);letter-spacing:0}
.disclosure-icon{height:22px;width:22px;position:relative}
.disclosure-icon::before,.disclosure-icon::after{content:'';position:absolute;background:var(--color-accent);width:14px;height:1px;left:4px;top:10px}
.disclosure-icon::after{transform:rotate(90deg)}
details[open] .disclosure-icon::after{transform:none}
.guide-body{padding:0 60px 32px 234px;max-width:1050px;color:var(--color-text-secondary);font-size:14px;line-height:1.85}
.guide-body ul{padding-left:18px;margin:16px 0 0}
.guide-body li+li{margin-top:10px}
.contact-layout{display:grid;grid-template-columns:1fr 1.12fr;align-items:start;gap:clamp(40px,7vw,100px);padding-block:56px 80px}
.contact-intro{padding-top:20px}
.contact-intro h1{font-size:clamp(42px,4.8vw,64px)}
.contact-deck{font-size:17px;line-height:1.8;color:var(--color-text-secondary);max-width:430px;margin-top:24px}
.contact-aside{border-top:1px solid var(--color-border-strong);padding-top:28px;margin-top:48px;display:flex;gap:20px;max-width:410px}
.contact-symbol{font-size:26px;line-height:1;color:var(--color-accent)}
.contact-aside h2{font-size:15px;letter-spacing:-.02em;line-height:1.4;margin-bottom:10px}
.contact-aside p{font-size:13px;line-height:1.8;color:var(--color-text-secondary)}
.contact-topics{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px}
.contact-topics span{font-size:11px;color:var(--color-text-secondary);padding:5px 10px;border:1px solid var(--color-border-strong);border-radius:2px}
#contact-form{background:var(--paper);color:var(--ink);padding:clamp(24px,2.8vw,40px);border-radius:4px;color-scheme:light}
.form-heading{border-bottom:1px solid var(--paper-line);padding-bottom:18px;margin-bottom:20px}
.form-heading h2{font-size:26px;letter-spacing:-.035em}
.form-heading p{color:var(--paper-muted);font-size:13px;margin-top:8px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{min-width:0;margin-bottom:20px}
label{display:block;font-size:12px;font-weight:500;margin-bottom:7px}
input,select,textarea{display:block;width:100%;border:1px solid var(--paper-line);border-radius:3px;background:var(--paper-field);color:var(--ink);padding:11px 12px;font-size:13px;line-height:1.6;min-height:44px}
textarea{resize:vertical;min-height:116px}
input::placeholder,textarea::placeholder{color:var(--paper-muted);opacity:.85}
input:focus,select:focus,textarea:focus{outline:2px solid var(--ink);outline-offset:2px}
#contact-form :focus-visible{outline-color:var(--ink)}
.field-hint{font-size:11px;color:var(--paper-muted);margin-top:7px}
.error{font-size:11px;color:var(--paper-error);margin-top:6px}
.error:empty{display:none}
.field.is-invalid input,.field.is-invalid textarea{border-color:var(--paper-error)}
.form-actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:24px}
.form-actions .button{width:100%;justify-content:space-between;background:var(--ink);color:var(--paper);border-color:var(--ink)}
.form-actions .button:hover{background:var(--color-surface-active)}
.retry-link{padding:7px 0;border:0;border-bottom:1px solid var(--paper-muted);font-size:13px;background:none;color:var(--ink)}
.form-status{font-size:12px;line-height:1.7;margin-top:16px;color:var(--paper-muted)}
.form-status:empty{display:none}
.form-status[data-kind='success']{color:var(--paper-success)}
.form-status[data-kind='error']{color:var(--paper-error)}
.form-status[data-kind='warning']{color:var(--paper-warning)}
.site-footer{border-top:1px solid var(--color-border-strong);padding-block:36px 24px;background:var(--color-canvas)}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:24px}
.footer-top .brand{font-size:25px}
.footer-top p{color:var(--color-text-secondary);font-size:12px}
.footer-top>a:last-child{font-size:12px;color:var(--color-text-secondary)}
.footer-top>a:last-child:hover{color:var(--color-accent-hover)}
.footer-bottom{display:flex;justify-content:space-between;color:var(--color-text-secondary);font-size:10px;margin-top:32px}

@media(min-width:1600px){.hero{padding-block:96px}.contact-layout{padding-block:96px}}
@media(max-width:1050px){.primary-nav{gap:22px}.header-contact{margin-left:0!important}.hero{gap:28px}.hero h1{font-size:clamp(38px,4.4vw,52px)}.expertise{gap:56px}.services-workspace{grid-template-columns:220px minmax(0,1fr);gap:28px}.contact-layout{gap:32px}.contact-intro h1{font-size:48px}.form-row{grid-template-columns:1fr;gap:0}.contact-deck{font-size:16px}.page-deck{max-width:290px}.guides summary{grid-template-columns:160px 1fr 24px}.guide-body{padding-left:184px}}
@media(max-width:800px){.header-inner{min-height:74px}.brand{font-size:25px}.brand img{width:30px;height:30px}.menu-toggle{display:flex;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:6px;border:1px solid var(--color-border-strong);background:none}.menu-toggle span{width:18px;height:1px;background:var(--color-text-primary)}.primary-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--color-surface);padding:16px var(--gutter) 24px;border-bottom:1px solid var(--color-border-strong);align-items:stretch;gap:4px;flex-direction:column}.primary-nav.is-open{display:flex}.nav-link{font-size:16px;padding:12px 0}.nav-link[aria-current]::after{left:auto;right:0;bottom:21px}.header-contact{margin-top:12px;justify-content:space-between}.service-links summary{font-size:16px;padding-block:12px}.service-menu{position:static;width:100%;box-shadow:none;margin-bottom:12px}.hero{grid-template-columns:1.1fr .9fr;gap:24px;padding-block:48px}.hero h1{font-size:36px}.hero-description{font-size:15px;margin-top:20px}.hero-actions{gap:20px;margin-top:24px}.hero-actions .button{padding:12px 16px}.eyebrow{font-size:11px;margin-bottom:20px}.figure-heading{font-size:9px}.infrastructure-figure figcaption{font-size:9px;gap:4px}.expertise{gap:36px;padding-block:64px}.expertise-list h3{font-size:19px}.page-section{padding-top:44px}.page-heading{gap:32px;margin-bottom:40px}.page-heading h1{font-size:42px}.page-deck{font-size:14px;max-width:240px}.service-tabs{position:static}.service-tabs button{padding:12px;font-size:12px}.services-workspace{grid-template-columns:190px minmax(0,1fr);gap:24px}.service-scope{grid-template-columns:1fr;gap:24px}.service-lead{font-size:14px}.contact-intro h1{font-size:40px}.contact-layout{gap:26px;padding-block:44px 64px}.contact-aside{margin-top:32px;gap:12px}.contact-topics{gap:6px}.contact-topics span{font-size:10px}.contact-deck{font-size:15px}.form-heading h2{font-size:22px}.about-intro{gap:36px}.large-copy{font-size:20px}.method{column-gap:36px}.method article{gap:16px}.method h2{font-size:22px}.approach-band-inner{column-gap:48px}.guides summary{grid-template-columns:140px 1fr 20px;font-size:20px}.guide-body{padding-left:164px}}
@media(max-width:600px){.hero{grid-template-columns:1fr;padding-block:40px 32px;gap:40px}.hero h1{font-size:clamp(33px,8.8vw,48px)}.hero-description{max-width:440px}.hero-actions{gap:24px}.infrastructure-figure{max-width:440px;width:100%;margin-inline:auto}.system-drawing{max-height:250px}.figure-heading{font-size:11px}.infrastructure-figure figcaption{font-size:10px}.discipline-strip>div{grid-template-columns:1fr 1fr}.discipline-strip span{padding:15px 0;font-size:11px;justify-content:flex-start!important}.discipline-strip span:nth-child(even){border-right:0;padding-left:20px}.discipline-strip span:nth-child(-n+2){border-bottom:1px solid var(--color-border-strong)}.expertise{grid-template-columns:1fr;gap:32px;padding-block:52px}.section-intro>p:not(.eyebrow){max-width:none}.expertise-list a{padding:20px 0}.expertise-list h3{font-size:21px}.approach-band-inner{grid-template-columns:1fr;gap:24px;padding-block:40px}.approach-band .eyebrow{margin:0}.page-heading{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:32px}.page-heading h1{font-size:38px}.page-deck{max-width:none;padding:0}.services-workspace{grid-template-columns:1fr;gap:28px;padding-top:20px}.service-tabs{display:grid;grid-template-columns:1fr 1fr;gap:5px}.service-tabs button{border:1px solid var(--color-border-strong);min-height:52px;padding:10px;font-size:11px;line-height:1.5}.service-tabs button:last-child{grid-column:1/-1}.service-tabs button[aria-selected='true']{border-color:var(--color-accent)}.service-tabs button svg{display:none}.service-detail h2{font-size:29px}.service-scope{padding-block:24px;gap:24px}.service-scope h3,.service-prepare h3{margin-bottom:12px}.service-case{padding:18px}.service-case h3{font-size:18px}.about-intro{grid-template-columns:1fr;gap:24px;margin-bottom:36px}.method{grid-template-columns:1fr}.method article{padding-block:26px}.method h2{font-size:24px}.inline-invitation{margin-top:36px;flex-direction:column;align-items:flex-start;gap:24px}.inline-invitation .button{width:100%}.guides summary{grid-template-columns:1fr 20px;gap:12px;font-size:21px;padding-block:24px}.guide-kind{grid-column:1/-1;font-size:11px}.guide-body{padding:0 0 24px;font-size:13px}.contact-layout{grid-template-columns:1fr;gap:30px;padding-block:36px 52px}.contact-intro{padding:0}.contact-intro h1{font-size:42px}.contact-deck{font-size:15px;max-width:400px;margin-top:20px}.contact-aside,.contact-topics{display:none}#contact-form{padding:24px 20px}.form-heading{padding-bottom:18px;margin-bottom:22px}.form-heading h2{font-size:25px}.form-row{grid-template-columns:1fr}.field{margin-bottom:18px}input,select,textarea{font-size:16px}.field-hint,.error{font-size:11px}.form-actions{margin-top:20px}.form-actions .button{font-size:14px}.footer-top{align-items:flex-start;flex-wrap:wrap;gap:20px}.footer-top p{order:3;flex-basis:100%;font-size:11px}.footer-top .brand{font-size:25px}.footer-top>a:last-child{font-size:11px}.footer-bottom{font-size:9px;gap:16px;margin-top:24px}.site-footer{padding-block:28px 22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}