@font-face{font-family:'Unbounded';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/unbounded-latin-600-normal.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:'Golos Text';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/golos-text-latin-400-normal.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:'Golos Text';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/golos-text-latin-500-normal.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:'Golos Text';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/golos-text-latin-600-normal.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:'Unbounded';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/unbounded-cyrillic-600-normal.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/golos-text-cyrillic-400-normal.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/golos-text-cyrillic-500-normal.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/golos-text-cyrillic-600-normal.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Unbounded';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/unbounded-cyrillic-ext-600-normal.woff2) format('woff2');unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/golos-text-cyrillic-ext-400-normal.woff2) format('woff2');unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/golos-text-cyrillic-ext-500-normal.woff2) format('woff2');unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/golos-text-cyrillic-ext-600-normal.woff2) format('woff2');unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
/* Integrity Engineering — company site 0.4.0
   Concept: a road seen in plan and profile. Survey blue for trust, road-marking yellow
   used only for the design line and the main app action. */
:root{
 --ink:#18242b; --muted:#55636a; --paper:#f4f5f1; --white:#fff; --line:#d7dbd2;
 --steppe:#8c976b; --steppe-soft:#e4e7da; --blue:#12406e; --blue-deep:#0d2f52; --mark:#f2b705;
 --display:'Unbounded',system-ui,sans-serif; --text:'Golos Text',system-ui,'Segoe UI',Arial,sans-serif;
 --shell:1200px; --radius:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.62 var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:600;text-wrap:balance}
h1,h2{font-family:var(--display);letter-spacing:-.02em}
p{margin:0}
:focus-visible{outline:3px solid var(--mark);outline-offset:3px;border-radius:4px}
.shell{width:min(var(--shell),calc(100% - 64px));margin-inline:auto}
.section{padding-block:clamp(72px,9vw,128px)}
.skip{position:fixed;left:16px;top:-80px;z-index:50;background:var(--ink);color:#fff;padding:10px 14px;border-radius:6px;text-decoration:none}
.skip:focus{top:12px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 22px;border-radius:8px;font:600 15px/1 var(--text);text-decoration:none;border:1.5px solid transparent;transition:background-color .15s,color .15s,border-color .15s}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--ink)}
.btn-outline{border-color:var(--blue);color:var(--blue);min-height:42px;padding:0 16px}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-mark{background:var(--mark);color:var(--ink)}
.btn-mark:hover{background:#ffc928}
.btn-ghost-light{border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost-light:hover{border-color:#fff}

/* Header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(244,245,241,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.wordmark{display:flex;align-items:center;gap:12px;text-decoration:none}
.mark{width:40px;height:40px;flex:none}
.mark rect{fill:var(--blue)}
.mark path{fill:none;stroke:#fff;stroke-width:2.6;stroke-linejoin:round}
.mark .mark-line{stroke:var(--mark);stroke-width:2.4}
.wordmark-text{font:600 18px/1 var(--display);letter-spacing:.01em}
.wordmark-text small{display:block;margin-top:5px;font:500 12px/1 var(--text);letter-spacing:.02em;color:var(--muted)}
#site-nav{display:flex;align-items:center;gap:28px;font-size:15px;font-weight:500}
#site-nav a:not(.btn){text-decoration:none;color:var(--muted)}
#site-nav a:not(.btn):hover{color:var(--ink)}
.menu-toggle{display:none;align-items:center;gap:10px;background:none;border:1.5px solid var(--line);border-radius:8px;padding:9px 12px;font:500 15px var(--text);color:var(--ink);cursor:pointer}
.burger{width:16px;height:10px;border-block:2px solid currentColor;position:relative}
.burger::after{content:"";position:absolute;left:0;right:0;top:2px;border-top:2px solid currentColor}

/* Hero */
.hero{padding-top:clamp(48px,7vw,96px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:clamp(32px,6vw,96px);align-items:end}
.hero h1{font-size:clamp(38px,5.6vw,72px);line-height:1.04;max-width:11.5ch}
.hero-aside{display:grid;gap:28px;padding-bottom:8px}
.hero-aside p{color:var(--muted);font-size:18px;max-width:44ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{margin-top:clamp(40px,6vw,72px);margin-bottom:0}
.hero-photo{border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;aspect-ratio:16/6.4;background:var(--steppe-soft)}
.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:center 62%}
.profile{width:100%;height:clamp(96px,13vw,170px);background:var(--white);border:1px solid var(--line);border-top:0}
.profile .grid path{stroke:var(--line);stroke-width:1;fill:none;vector-effect:non-scaling-stroke}
.profile .ground{fill:var(--steppe-soft)}
.profile .ground-line{fill:none;stroke:var(--steppe);stroke-width:1.5;vector-effect:non-scaling-stroke}
.profile .grade{fill:none;stroke:var(--mark);stroke-width:4;stroke-linecap:round;vector-effect:non-scaling-stroke;stroke-dasharray:1600;stroke-dashoffset:1600;animation:draw 2.2s .3s cubic-bezier(.4,0,.2,1) forwards}
.profile .structure path,.profile .structure circle{fill:none;stroke:var(--blue);stroke-width:2;vector-effect:non-scaling-stroke}
.profile .ticks path{stroke:var(--muted);stroke-width:1;vector-effect:non-scaling-stroke}
@keyframes draw{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){.profile .grade{stroke-dashoffset:0}}
.hero-visual figcaption{display:flex;justify-content:space-between;gap:16px;padding:10px 2px 0;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.hero-visual figcaption span:nth-child(2){text-align:center}
.photo-note{margin-top:4px;font-size:12px;color:#7a868b;text-align:center}

/* Facts */
.facts{display:grid;grid-template-columns:repeat(3,1fr);margin-top:clamp(56px,7vw,96px);border-top:1px solid var(--ink)}
.facts>div{padding:28px 28px 0 0}
.facts>div+div{padding-left:28px;border-left:1px solid var(--line)}
.facts strong{display:block;font:600 clamp(30px,3.6vw,46px)/1 var(--display);letter-spacing:-.02em;color:var(--blue)}
.facts>div p{margin-top:12px;color:var(--muted);max-width:24ch}
.facts-note{grid-column:1/-1;margin-top:20px;font-size:13px;color:#7a868b}

/* About */
.about{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(32px,6vw,96px)}
.about h2,.section-head h2,.faq h2{font-size:clamp(28px,3.4vw,44px);line-height:1.12;max-width:16ch}
.about-body{display:grid;gap:18px;max-width:62ch}
.about-body .lead{font-size:21px;line-height:1.5;color:var(--ink);font-weight:500}
.about-body p:not(.lead){color:var(--muted)}

/* Services */
.services{background:var(--white);border-block:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:end;margin-bottom:clamp(40px,5vw,64px)}
.section-head p{color:var(--muted);max-width:46ch;justify-self:end}
.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 clamp(32px,5vw,72px)}
.service-grid article{display:grid;gap:12px;align-content:start;padding:32px 0 36px;border-top:1px solid var(--line)}
.service-grid h3{font-size:22px;line-height:1.3}
.service-grid p{color:var(--muted);max-width:52ch}
.tag{justify-self:start;margin-top:4px;padding:4px 10px;border-radius:999px;background:var(--steppe-soft);color:#4d5636;font-size:13px;font-weight:500}

/* Experience */
.project-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(20px,3vw,32px)}
.project{display:grid;gap:10px;align-content:start;padding:24px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
.project-art{width:100%;height:auto;aspect-ratio:320/150;margin-bottom:10px;background:var(--paper);border-radius:6px}
.project-art .a-grid{stroke:var(--line);stroke-width:1.2;fill:none}
.project-art .a-bar{stroke:#b9c1a0;stroke-width:14;fill:none}
.project-art .a-line{stroke:var(--blue);stroke-width:12;fill:none;stroke-linecap:round;opacity:.9}
.project-art .a-accent{stroke:var(--mark);stroke-width:3;fill:none;stroke-linecap:round}
.project-art .a-dot{fill:var(--blue)}
.project-art .a-ring{fill:none;stroke:var(--blue);stroke-width:8}
.project-art .a-sheet{fill:#fff;stroke:var(--blue);stroke-width:2}
.project-art text{font:500 12px var(--text);fill:var(--muted)}
.project-kind{font-size:14px;font-weight:500;color:var(--steppe)}
.project h3{font-size:20px;line-height:1.35}
.project p:last-child{color:var(--muted);font-size:16px}

/* Product */
.product{background:var(--blue);color:#fff}
.product-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(40px,6vw,96px);align-items:center}
.product-copy{display:grid;gap:20px;justify-items:start}
.product-status{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#c9d6e6}
.product-status::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mark)}
.product-name{font-size:clamp(48px,7vw,88px);line-height:.95;letter-spacing:-.03em}
.product-tagline{font-size:20px;line-height:1.45;max-width:30ch;color:#fff}
.product-copy>p:not(.product-status):not(.product-tagline){color:#c9d6e6;max-width:48ch}
.product-panel{background:var(--blue-deep);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:clamp(24px,3vw,36px)}
.workflow{list-style:none;margin:0;padding:0;counter-reset:step}
.workflow li{counter-increment:step;display:grid;grid-template-columns:44px 1fr;gap:4px 16px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.workflow li:first-child{padding-top:0}
.workflow li::before{content:counter(step);grid-row:span 2;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1.5px solid var(--mark);color:var(--mark);font:600 15px var(--display)}
.workflow h3{font-size:18px}
.workflow p{color:#b7c6d8;font-size:15px}
.access-rule{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-top:22px;padding:14px 16px;border-radius:8px;background:rgba(255,255,255,.07);font-size:15px}
.access-rule span{color:#b7c6d8}
.product-footnote{margin-top:14px;font-size:13px;color:#9fb2c9}

/* FAQ */
.faq{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:clamp(32px,6vw,96px)}
.faq-items{border-top:1px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;gap:24px;padding:22px 0;font-size:18px;font-weight:500;cursor:pointer}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:14px;height:14px;margin-top:6px;background:linear-gradient(var(--blue),var(--blue)) center/14px 2px no-repeat,linear-gradient(var(--blue),var(--blue)) center/2px 14px no-repeat;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 40px 24px 0;color:var(--muted);max-width:64ch}

/* Contact */
.contact{background:var(--ink);color:#fff;padding-block:clamp(72px,9vw,120px)}
.contact-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(32px,6vw,96px);align-items:end}
.contact h2{font-size:clamp(30px,4vw,52px);line-height:1.1;max-width:14ch}
.contact-grid>div>p{margin-top:20px;color:#b8c2c6;max-width:44ch}
.contact-links{display:grid;gap:14px;justify-items:start}
.contact-links .phone{font:600 clamp(26px,3vw,38px)/1.1 var(--display);text-decoration:none;color:var(--mark);letter-spacing:-.01em}
.contact-links .phone:hover,.contact-links .email:hover{text-decoration:underline;text-underline-offset:5px}
.contact-links .email{font-size:19px;text-decoration:none}
.location{color:#b8c2c6}

/* Footer */
.site-footer{background:var(--ink);color:#b8c2c6;border-top:1px solid rgba(255,255,255,.12);font-size:14px}
.footer-row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;min-height:84px;padding-block:18px}
.footer-brand{font:600 14px/1.2 var(--display);color:#fff;text-decoration:none}
.footer-brand small{display:block;margin-top:4px;font:400 12px var(--text);color:#8e9a9f}
.site-footer a:not(.footer-brand){color:#fff}

/* Responsive */
@media (max-width:980px){
 .hero-grid,.about,.section-head,.product-grid,.faq,.contact-grid{grid-template-columns:1fr}
 .section-head p{justify-self:start}
 .hero h1{max-width:13ch}
 .hero-photo{aspect-ratio:16/8}
}
@media (max-width:860px){
 .menu-toggle{display:inline-flex}
 #site-nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;padding:8px 32px 20px;background:var(--paper);border-bottom:1px solid var(--line)}
 #site-nav.is-open{display:flex}
 #site-nav a:not(.btn){padding:14px 0;border-bottom:1px solid var(--line);font-size:17px}
 #site-nav .nav-login{margin-top:16px;min-height:48px}
 .service-grid,.project-grid{grid-template-columns:1fr}
}
@media (max-width:600px){
 body{font-size:16px}
 .shell{width:calc(100% - 32px)}
 #site-nav{padding-inline:16px}
 .wordmark-text{font-size:16px}
 .hero h1{font-size:clamp(32px,9.4vw,44px)}
 .hero-aside p{font-size:17px}
 .hero-photo{aspect-ratio:4/3}
 .hero-visual figcaption span:nth-child(2){display:none}
 .facts{grid-template-columns:1fr}
 .facts>div,.facts>div+div{padding:22px 0;border-left:0;border-bottom:1px solid var(--line)}
 .project{padding:18px}
 .faq details p{padding-right:0}
 .btn{width:100%}
 .hero-actions{width:100%}
}
@media print{.site-header,.hero-actions,.menu-toggle{display:none}.product,.contact,.site-footer{background:#fff;color:#000}}