/* Engineering Design Nexus — site styles. Mobile-first overrides at 1024 / 900 / 768 / 600 / 480 px. */
@font-face{font-family:'Archivo';font-style:normal;font-weight:500 700;font-stretch:100%;font-display:swap;src:url(fonts/archivo-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Archivo';font-style:normal;font-weight:500 700;font-stretch:100%;font-display:swap;src:url(fonts/archivo-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400 600;font-stretch:100%;font-display:swap;src:url(fonts/plex-sans-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400 600;font-stretch:100%;font-display:swap;src:url(fonts/plex-sans-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/plex-mono-400-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/plex-mono-400-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500 600;font-display:swap;src:url(fonts/plex-mono-500-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500 600;font-display:swap;src:url(fonts/plex-mono-500-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{
  --navy:#0B2A4A;--steel:#5A6B7A;--electric:#2F80ED;--electric-hover:#1A6FD4;--white:#FFFFFF;
  --surface:#F5F7FA;--surface-alt:#F4F6F8;--grid:#E8EDF2;--ig-body:#D2DAE4;--error:#D64545;
  --font-display:'Archivo',-apple-system,'Segoe UI',sans-serif;
  --font-sans:'IBM Plex Sans',-apple-system,'Segoe UI',sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,monospace;
  /* fluid spacing: equals the original desktop values at >= ~900px */
  --pad:clamp(20px,5vw,40px);
  --sec-lg:clamp(48px,8vw,72px);
  --sec-md:clamp(44px,7vw,64px);
  --sec-sm:clamp(36px,6vw,48px);
  --cell-pad:clamp(20px,4vw,32px);
}
@view-transition{navigation:auto}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:80px}
body{margin:0;background:var(--white);color:var(--navy);font-family:var(--font-sans);font-size:1rem;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:clip}
html.menu-open{overflow:hidden}
img,svg{max-width:100%;height:auto}
a{color:var(--electric)}
a:hover{color:var(--navy)}
h1,h2,h3{text-wrap:balance;overflow-wrap:break-word;hyphens:auto}
p{text-wrap:pretty}
:focus-visible{outline:2px solid var(--electric);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:300;background:var(--navy);color:#fff;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;padding:12px 16px;text-decoration:none}
.skip:focus{top:12px;color:#fff}

.wrap{max-width:1160px;margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.h1{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;line-height:1.1;margin:0}
.h1-hero{font-size:clamp(2.1rem,4.4vw,3.5rem);max-width:15ch}
.h1-page{font-size:clamp(1.9rem,3.4vw,2.7rem)}
.accent{color:var(--electric)}
.muted{color:var(--steel)}

/* Section label (EDN—00 ——— LABEL) */
.label{display:flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;line-height:1.4}
.label .code{color:var(--electric);white-space:nowrap}
.label .rule{width:44px;height:1px;background:var(--grid);flex:none}
.label .name{color:var(--steel);text-transform:uppercase}

/* Badges */
.badge{display:inline-flex;align-items:center;font-family:var(--font-mono);font-size:11px}
.badge-mono{color:var(--electric);letter-spacing:.12em}
.badge-solid{background:var(--navy);color:var(--white);padding:6px 11px}
.badge-outline{color:var(--steel);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase}

/* Buttons */
.btn{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;border:none;cursor:pointer;padding:15px 26px;min-height:44px;border-radius:0;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;line-height:1.2;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .15s ease}
.btn-primary{background:var(--navy);color:var(--white)}
.btn-secondary{background:var(--white);color:var(--navy);border:1px solid var(--navy)}
.btn-on-navy{background:var(--electric);color:var(--white)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
@media (hover:hover){
  .btn-primary:not([disabled]):hover{background:var(--electric-hover);color:var(--white);transform:scale(1.02)}
  .btn-secondary:hover{background:var(--surface-alt);color:var(--navy);transform:scale(1.02)}
  .btn-on-navy:hover{background:var(--white);color:var(--navy);transform:scale(1.02)}
}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
@media (max-width:480px){.btn-row .btn{flex:1 1 100%}}

/* Header */
.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--grid);transition:background .25s ease,box-shadow .25s ease,backdrop-filter .25s ease}
.site-header.scrolled{border-bottom-color:transparent;background:rgba(255,255,255,.86);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--grid),0 10px 24px -18px rgba(11,42,74,.25)}
.site-header .bar{max-width:1160px;margin:0 auto;padding:16px var(--pad);padding-top:max(16px,env(safe-area-inset-top));display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--navy);min-width:0}
.brand:hover{color:var(--navy)}
.brand img{width:28px;height:31px;display:block;flex:none}
.brand span{font-family:var(--font-display);font-weight:700;font-size:15px;letter-spacing:.03em;white-space:nowrap}
.desktop-nav{display:flex;gap:26px;align-items:center}
.nav-link{position:relative;text-decoration:none;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--steel)}
.nav-link:hover,.nav-link.active,.nav-link[aria-current="page"]{color:var(--navy)}
.nav-link::after{content:'';position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--electric);transition:width .25s ease}
@media (hover:hover){.nav-link:hover::after{width:100%}}
.nav-link[aria-current="page"]::after{width:100%}
.nav-cta{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;color:#fff;background:var(--navy);padding:9px 16px}
.nav-cta:hover{color:#fff}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;width:44px;height:44px;align-items:center;justify-content:center;flex:none;margin-right:-8px}
.hamburger span{display:block;width:20px;height:2px;background:var(--navy)}
@media (max-width:900px){
  .desktop-nav{display:none}
  .hamburger{display:flex}
}
@media (max-width:400px){
  .brand{gap:9px}
  .brand span{font-size:13px}
  .brand img{width:24px;height:27px}
}

/* Mobile menu panel */
.mobile-panel{position:fixed;inset:0;background:var(--white);z-index:200;display:flex;flex-direction:column;padding:24px 28px;padding-top:max(24px,env(safe-area-inset-top));padding-bottom:max(24px,env(safe-area-inset-bottom));transform:translateX(100%);visibility:hidden;transition:transform .3s ease,visibility 0s linear .3s;overflow-y:auto;overscroll-behavior:contain}
.mobile-panel.open{transform:translateX(0);visibility:visible;transition:transform .3s ease}
.mobile-panel .top{display:flex;justify-content:flex-end}
.panel-close{background:none;border:none;font-size:28px;line-height:1;color:var(--navy);min-width:44px;min-height:44px;cursor:pointer;margin-right:-8px}
.mobile-panel nav{display:flex;flex-direction:column;margin-top:20px}
.mobile-panel nav a{font-family:var(--font-mono);font-size:20px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;color:var(--navy);min-height:56px;display:flex;align-items:center;border-bottom:1px solid var(--grid)}
.mobile-panel nav a[aria-current="page"]{color:var(--electric)}
@media (prefers-reduced-motion:reduce){.mobile-panel,.mobile-panel.open{transition:none}}

/* Reveal on scroll (only when JS is running) */
@media (prefers-reduced-motion:no-preference){
  .js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
  .js .reveal.in{opacity:1;transform:none}
  .load-header{animation:slideDown .3s ease both}
  .load-1{animation:fadeUp .4s ease both;animation-delay:.15s}
  .load-2{animation:fadeUp .4s ease both;animation-delay:.3s}
  .load-3{animation:fadeUp .4s ease both;animation-delay:.45s}
}
@keyframes slideDown{from{transform:translateY(-12px);opacity:0}to{transform:none;opacity:1}}
@keyframes fadeUp{from{transform:translateY(14px);opacity:0}to{transform:none;opacity:1}}

/* Hover card */
.hover-card{position:relative}
.hover-card-bar{position:absolute;top:0;left:0;right:0;height:0;background:var(--electric);transition:height .2s ease}
@media (hover:hover){
  .hover-card{transition:transform .2s ease}
  .hover-card:hover{transform:translateY(-2px)}
  .hover-card:hover .hover-card-bar{height:2px}
}

/* Hero */
.hero{border-bottom:1px solid var(--grid);position:relative;overflow:hidden}
.hero .wrap{padding-top:var(--sec-lg);padding-bottom:var(--sec-lg);display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;position:relative}
.hero-lede{margin:24px 0 0;font-size:1.08rem;line-height:1.6;color:var(--steel);max-width:48ch}
.hero-visual{background:var(--surface-alt);border:1px solid var(--grid);padding:var(--cell-pad)}
.dot-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.12}
@media (max-width:900px){
  .hero .wrap{grid-template-columns:minmax(0,1fr);gap:40px}
  .hero-visual{max-width:560px}
}
@media (max-width:768px){.dot-canvas{display:none}}

/* Nexus hero diagram */
.nexus{width:100%;height:auto;display:block}
.nexus line{stroke:var(--navy);stroke-width:2.4}
.nexus circle{fill:var(--navy)}
.nexus .node-label{font-family:var(--font-mono);font-size:15px;font-weight:600;fill:#fff}
.nexus .caption{font-family:var(--font-mono);font-size:11px;fill:var(--steel)}
@media (prefers-reduced-motion:no-preference){
  .js .nexus .net{opacity:0;transition:opacity .3s ease .2s}
  .js .nexus line{stroke-dasharray:var(--len);stroke-dashoffset:var(--len)}
  .js .nexus circle{transform:scale(0);transform-box:fill-box;transform-origin:center}
  .js .nexus .node-label{opacity:0}
  .js .nexus .caption{opacity:0}
  .js .nexus.ready .net{opacity:1}
  .js .nexus.ready line{stroke-dashoffset:0;transition:stroke-dashoffset .6s ease var(--d)}
  .js .nexus.ready circle{transform:scale(1);transition:transform .45s cubic-bezier(.34,1.56,.64,1) var(--d)}
  .js .nexus.ready .node-label{opacity:1;transition:opacity .4s ease 1.1s}
  .js .nexus.ready .caption{opacity:1;transition:opacity .5s ease 1.3s}
}
@media (max-width:480px){.nexus .caption{font-size:13px}}

/* Hairline cell grid (1px gaps draw the lines) */
.cells{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--grid);border:1px solid var(--grid)}
.cells > *{min-width:0}
@media (max-width:768px){.cells{grid-template-columns:minmax(0,1fr)}}
.vcard{background:var(--white);padding:34px 30px;height:100%}
.vcard h3{font-family:var(--font-display);font-weight:600;font-size:1.12rem;margin:10px 0 8px;letter-spacing:-.01em;line-height:1.3}
.vcard p{margin:0;font-size:.94rem;line-height:1.55;color:var(--steel)}
@media (max-width:768px){.vcard{padding:28px 24px}}
.fill{height:100%}

/* Navy CTA band */
.cta-band{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.cta-band .wrap{padding-top:var(--sec-md);padding-bottom:var(--sec-md);display:flex;justify-content:space-between;gap:24px 40px;align-items:center;flex-wrap:wrap}
.cta-band h2{font-family:var(--font-display);font-weight:600;font-size:clamp(1.5rem,2.4vw,2rem);margin:0;line-height:1.2}

/* Page head */
.page-head{background:var(--surface-alt);border-bottom:1px solid var(--grid)}
.page-head .wrap{padding-top:var(--sec-md);padding-bottom:var(--sec-md)}
.page-head .label{margin-bottom:22px}

/* Services */
.svc-row{display:grid;grid-template-columns:minmax(0,240px) minmax(0,1fr);border-bottom:1px solid var(--grid)}
.svc-row .t{padding:44px 32px 44px 0}
.svc-row .t h2{font-family:var(--font-display);font-weight:600;font-size:1.35rem;margin:12px 0 0;line-height:1.25}
.svc-row .b{padding:44px 0 44px 40px;border-left:1px solid var(--grid)}
.svc-row .b p{margin:0;color:var(--steel);max-width:62ch}
@media (max-width:768px){
  .svc-row{grid-template-columns:minmax(0,1fr)}
  .svc-row .t{padding:32px 0 10px}
  .svc-row .b{padding:0 0 32px;border-left:0}
}

/* Philosophy */
.note .wrap{padding-top:var(--sec-sm);padding-bottom:var(--sec-sm)}
.note p{margin:0;padding-left:20px;border-left:2px solid var(--electric);font-size:1rem;line-height:1.6;color:var(--steel);max-width:70ch}
.process .wrap{padding-top:var(--sec-lg);padding-bottom:var(--sec-lg)}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:1px;background:var(--grid);border:1px solid var(--grid)}
.steps li{background:var(--white);color:var(--navy);padding:24px 20px 28px;min-width:0}
.steps .n{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--electric);margin-bottom:12px}
.steps .s{font-size:.95rem;font-weight:500;overflow-wrap:break-word;hyphens:auto}
.steps li.last{background:var(--navy);color:#fff}
.steps li.last .n{color:#7FB2F5}
@media (max-width:1024px){
  .steps{grid-template-columns:repeat(4,minmax(0,1fr))}
  .steps li.last{grid-column:span 2}
}
@media (max-width:600px){
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps li{padding:20px 16px 22px}
}

/* Company */
.two-col .wrap{padding-top:var(--sec-lg);padding-bottom:var(--sec-lg);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:48px}
.two-col h2{font-family:var(--font-display);font-weight:600;font-size:1.25rem;margin:14px 0;line-height:1.3}
.two-col p{margin:0;color:var(--steel);max-width:46ch;line-height:1.6}
@media (max-width:768px){.two-col .wrap{grid-template-columns:minmax(0,1fr);gap:40px}}
.ways .wrap{padding-top:var(--sec-lg);padding-bottom:var(--sec-lg)}
.tools{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);border:1px solid var(--grid);max-width:900px}
.tools .l{padding:32px 30px}
.tools .l p{margin:12px 0 18px;color:var(--steel);max-width:42ch}
.tools .chips{display:flex;gap:8px;flex-wrap:wrap}
.tools .r{padding:32px 30px;background:var(--surface-alt);border-left:1px solid var(--grid);display:flex;flex-direction:column;justify-content:space-between;gap:20px}
.tools .r p{margin:0;color:var(--steel)}
.tools .r .nav-link{color:var(--navy);align-self:flex-start;text-transform:none;letter-spacing:0}
@media (max-width:768px){
  .tools{grid-template-columns:minmax(0,1fr)}
  .tools .l,.tools .r{padding:28px 24px}
  .tools .r{border-left:0;border-top:1px solid var(--grid)}
}
@media (pointer:coarse){.tools .r .nav-link{padding:12px 0}.tools .r .nav-link::after{bottom:8px}}

/* Contact */
.contact .wrap{padding-top:var(--sec-md);padding-bottom:var(--sec-md);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px}
.contact .h1{font-size:clamp(1.9rem,3.2vw,2.5rem);max-width:18ch}
.contact .lede{margin:20px 0 0;color:var(--steel);max-width:44ch;line-height:1.6}
@media (max-width:900px){.contact .wrap{grid-template-columns:minmax(0,1fr);gap:40px}}
.form,.form-done{background:var(--surface-alt);border:1px solid var(--grid);padding:var(--cell-pad)}
.form{display:flex;flex-direction:column;gap:20px}
.form[hidden],.form-done[hidden]{display:none}
.form-done:focus{outline:none}
.field label{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--steel);margin-bottom:6px}
.field input,.field textarea{width:100%;background:transparent;border:none;border-bottom:1px solid var(--navy);border-radius:0;padding:10px 2px;font-family:var(--font-sans);font-size:.98rem;color:var(--navy);outline:none;transition:border-color .2s ease;-webkit-appearance:none;appearance:none}
.field textarea{resize:vertical;min-height:120px}
.field input:focus,.field textarea:focus{border-bottom-color:var(--electric);box-shadow:0 1px 0 var(--electric)}
@media (pointer:coarse){.field input,.field textarea{font-size:16px}}
.field.error input,.field.error textarea{border-bottom-color:var(--error)}
.field-error{color:var(--error);font-size:12px;font-family:var(--font-mono);margin-top:6px;display:none}
.field.error .field-error{display:block}
.form-msg{margin:0;color:var(--error);font-size:13px;line-height:1.5}
.form-msg[hidden]{display:none}
.form .btn{align-self:flex-start}
@media (max-width:480px){.form .btn{align-self:stretch}}
.form-done p{margin:14px 0 0;font-size:1.05rem;color:var(--navy);line-height:1.6}
.spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;display:inline-block}
@media (prefers-reduced-motion:no-preference){.spinner{animation:spin .7s linear infinite}}
@keyframes spin{to{transform:rotate(360deg)}}

/* Footer */
.site-footer{background:var(--surface-alt);border-top:1px solid var(--grid)}
.site-footer .wrap{padding-top:40px;padding-bottom:max(26px,env(safe-area-inset-bottom))}
.foot-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px;padding-bottom:24px;border-bottom:1px solid var(--grid)}
.foot-grid .v{font-size:.92rem;margin-top:6px;color:var(--navy);overflow-wrap:anywhere}
.foot-grid .v a{color:var(--navy);text-decoration:none}
.foot-grid .v a:hover{color:var(--electric)}
.foot-meta{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:20px;font-family:var(--font-mono);font-size:11px;color:var(--steel)}
@media (max-width:900px){.foot-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:600px){
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px}
  .foot-grid .email{grid-column:1/-1}
}