@font-face{font-family:Tektur;font-weight:400;font-display:swap;src:url(fonts/tektur-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Tektur;font-weight:400;font-display:swap;src:url(fonts/tektur-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212,U+00D7}
@font-face{font-family:Tektur;font-weight:700;font-display:swap;src:url(fonts/tektur-cyrillic-700-normal.woff2) format("woff2");unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Tektur;font-weight:700;font-display:swap;src:url(fonts/tektur-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212,U+00D7}
@font-face{font-family:Manrope;font-weight:400;font-display:swap;src:url(fonts/manrope-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Manrope;font-weight:400;font-display:swap;src:url(fonts/manrope-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212,U+00D7}
@font-face{font-family:Manrope;font-weight:600;font-display:swap;src:url(fonts/manrope-cyrillic-600-normal.woff2) format("woff2");unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Manrope;font-weight:600;font-display:swap;src:url(fonts/manrope-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212,U+00D7}
@font-face{font-family:Manrope;font-weight:800;font-display:swap;src:url(fonts/manrope-cyrillic-800-normal.woff2) format("woff2");unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Manrope;font-weight:800;font-display:swap;src:url(fonts/manrope-latin-800-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212,U+00D7}
@font-face{font-family:JBM;font-weight:400;font-display:swap;src:url(fonts/jetbrains-mono-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:JBM;font-weight:400;font-display:swap;src:url(fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212,U+00D7}
@font-face{font-family:JBM;font-weight:500;font-display:swap;src:url(fonts/jetbrains-mono-cyrillic-500-normal.woff2) format("woff2");unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:JBM;font-weight:500;font-display:swap;src:url(fonts/jetbrains-mono-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212,U+00D7}

:root{
  --bg:#E7E6E1; --bg2:#DCDBD5; --paper:#F3F2EE; --ink:#121417; --ink2:#4A4E55; --line:#B9B8B1;
  --blue:#1F3BFF; --blue-d:#162BC4; --blue-soft:rgba(31,59,255,.08);
  --dark:#0F1116; --dark2:#1A1D25;
  --disp:Tektur,"Arial Narrow",sans-serif; --body:Manrope,system-ui,sans-serif; --mono:JBM,ui-monospace,monospace;
  --pad:clamp(16px,4vw,56px); --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.55 var(--body);overflow-x:hidden}
h1,h2,h3{font-family:var(--disp);font-weight:700;letter-spacing:-.01em;margin:0;text-wrap:balance}
p{margin:0}
a{color:inherit}
.nb{white-space:nowrap}
.tag{font:500 12.5px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--blue)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;min-height:52px;padding:0 26px;background:var(--blue);color:#fff;border:0;border-radius:2px;font:600 16px/1 var(--body);text-decoration:none;cursor:pointer;transition:background .2s,transform .15s;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px))}
.btn:hover{background:var(--blue-d)}
.btn:active{transform:translateY(1px)}
.btn-sm{min-height:42px;padding:0 18px;font-size:14.5px;clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,9px 100%,0 calc(100% - 9px))}
.btn-ghost{clip-path:none;background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--blue);color:#fff}
.btn-wide{width:100%}

/* header */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:24px;padding:12px var(--pad);background:rgba(231,230,225,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{width:36px;height:36px;fill:var(--blue)}
.logo-txt{display:flex;flex-direction:column;line-height:1}
.logo-txt b{font:700 21px/1 var(--disp);letter-spacing:.02em}
.logo-txt small{font:400 10.5px/1.3 var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--ink2)}
.nav{display:flex;gap:28px;margin-left:auto}
.nav a{text-decoration:none;font-weight:600;font-size:15px;color:var(--ink2)}
.nav a:hover{color:var(--blue)}

/* hero */
.hero{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);align-items:center;gap:24px;max-width:var(--max);margin:0 auto;padding:clamp(40px,7vw,96px) var(--pad) clamp(32px,5vw,64px);min-height:min(88vh,820px)}
.hero-grid{position:absolute;inset:0;z-index:-1;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:48px 48px;opacity:.35;mask-image:radial-gradient(ellipse 80% 70% at 65% 50%,#000 30%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse 80% 70% at 65% 50%,#000 30%,transparent 80%)}
.hero-text{position:relative;z-index:2}
.hero h1{font-size:clamp(40px,5.6vw,76px);line-height:1;margin:18px 0 22px}
.lead{font-size:clamp(17px,1.4vw,19px);color:var(--ink2);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stage{position:relative;margin:0;aspect-ratio:1.15/1;width:100%}
#frame{width:100%;height:100%;display:block;cursor:grab;touch-action:pan-y}
#frame:active{cursor:grabbing}
.stage-hud{position:absolute;left:0;right:0;bottom:0;display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;justify-content:space-between;padding:10px 0 0;border-top:1px solid var(--ink);font:400 12px/1.2 var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--ink2)}
.stage-hud b{color:var(--blue);font-weight:500}
.hud-btn{background:none;border:1px solid var(--ink2);color:var(--ink);font:inherit;padding:6px 10px;cursor:pointer;border-radius:2px;min-height:32px}
.hud-btn:hover{background:var(--ink);color:var(--bg)}

/* strip */
.strip{background:var(--blue);color:#fff;overflow:hidden;border-block:1px solid var(--blue-d)}
.strip-run{display:flex;align-items:center;gap:22px;width:max-content;padding:16px 0;animation:run 38s linear infinite;font:700 19px/1 var(--disp);text-transform:uppercase;letter-spacing:.03em}
.strip-run i{width:10px;height:10px;border:2px solid #fff;transform:rotate(45deg);flex:none}
@keyframes run{to{transform:translateX(-50%)}}

/* sections */
.sec{position:relative;padding:clamp(64px,9vw,120px) var(--pad)}
.sec>*{max-width:var(--max);margin-left:auto;margin-right:auto}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px 48px;align-items:end;margin-bottom:clamp(32px,4vw,52px)}
.sec-head .tag{grid-column:1/-1}
.sec h2{font-size:clamp(32px,3.8vw,52px);line-height:1.05}
.sec-lead{color:var(--ink2);max-width:32em}

/* spec table — drawing title block */
.spec{background:var(--paper);background-image:linear-gradient(var(--bg2) 1px,transparent 1px),linear-gradient(90deg,var(--bg2) 1px,transparent 1px);background-size:24px 24px}
.spec-table{border:2px solid var(--ink);background:var(--paper)}
.spec-row{display:grid;grid-template-columns:72px minmax(0,1.1fr) minmax(0,1.6fr) minmax(0,.9fr);border-top:1px solid var(--ink);transition:background .2s}
.spec-row>span{padding:20px 22px;border-left:1px solid var(--ink)}
.spec-row>span:first-child{border-left:0}
.spec-hd{border-top:0;background:var(--ink);color:var(--paper);font:500 12px/1 var(--mono);text-transform:uppercase;letter-spacing:.08em}
.spec-hd>span{padding:13px 22px;border-color:#3a3d44}
.spec-row:not(.spec-hd):hover{background:var(--blue-soft)}
.pos{font:700 28px/1 var(--disp);color:var(--blue)}
.nm{font:700 19px/1.25 var(--disp)}
.ds{color:var(--ink2);font-size:16px}
.ob{font:400 13px/1.45 var(--mono);color:var(--ink2);text-transform:lowercase}

/* materials — profile sections */
.profiles{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-left:1px solid var(--line);border-top:1px solid var(--line)}
.profiles li{display:grid;grid-template-columns:76px minmax(0,1fr);grid-template-rows:auto auto;align-content:center;column-gap:20px;row-gap:2px;padding:22px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .25s}
.profiles svg{grid-row:span 2;width:76px;height:76px;fill:var(--ink);stroke:none;transition:transform .45s cubic-bezier(.2,.8,.2,1),fill .25s}
.profiles svg .ln{fill:none;stroke:var(--ink);stroke-width:3;stroke-dasharray:4 4}
.profiles svg .ln.thick{stroke-width:7;stroke-dasharray:none;stroke-linejoin:round}
.profiles svg .fill2{fill:var(--blue);opacity:.35}
.profiles b{font:700 18px/1.2 var(--disp);align-self:end}
.profiles small{align-self:start}
.profiles small{font:400 12.5px/1.4 var(--mono);color:var(--ink2)}
.profiles li:hover{background:var(--paper)}
.profiles li:hover svg{transform:rotate(-12deg) scale(1.06);fill:var(--blue)}
.profiles li:hover svg .ln{stroke:var(--blue)}
.mat-more{margin-top:28px;color:var(--ink2);border-left:3px solid var(--blue);padding-left:16px}

/* why — dark blueprint */
.why{background:var(--dark);color:#E9EAEE;overflow:hidden}
.why::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}
.why::after{content:"";position:absolute;right:-6%;top:-10%;width:520px;height:520px;border:1px dashed rgba(91,113,255,.5);border-radius:50%;pointer-events:none}
.why-grid{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:48px}
.why .tag{color:#8D9CFF}
.why h2{margin-top:16px;font-size:clamp(34px,4.2vw,58px)}
.why-list{list-style:none;padding:0;margin:0;counter-reset:w}
.why-list li{counter-increment:w;position:relative;padding:20px 0 20px 64px;border-top:1px solid rgba(255,255,255,.14);color:#B7BAC4}
.why-list li::before{content:"0" counter(w);position:absolute;left:0;top:20px;font:500 14px/1.6 var(--mono);color:#8D9CFF}
.why-list b{color:#fff;font-weight:600}

/* process line */
.line{list-style:none;padding:0;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:0;position:relative;--p:0}
.line::before,.line::after{content:"";position:absolute;top:13px;left:0;height:3px;background:var(--line);width:100%}
.line::after{background:var(--blue);width:calc(var(--p)*100%);transition:width .15s linear}
.line li{position:relative;padding:44px 18px 0 0;display:flex;flex-direction:column;gap:8px}
.line i{position:absolute;top:0;left:0;width:29px;height:29px;border-radius:50%;background:var(--bg);border:3px solid var(--line);z-index:1;transition:border-color .3s,background .3s}
.line i::after{content:"";position:absolute;inset:6px;border-radius:50%;background:var(--line);transition:background .3s}
.line li.on i{border-color:var(--blue)}
.line li.on i::after{background:var(--blue)}
.line b{font:700 19px/1.2 var(--disp)}
.line span{color:var(--ink2);font-size:15.5px}

/* form */
.form-sec{background:var(--blue);color:#fff;overflow:hidden}
.form-sec::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);background-size:40px 40px;pointer-events:none}
.form-wrap{position:relative;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(32px,5vw,72px);align-items:start}
.form-sec .tag{color:#C9D0FF}
.form-side h2{margin:16px 0 18px}
.form-side>p{color:#DCE0FF;max-width:28em}
.stamp{display:grid;grid-template-columns:auto 1fr;gap:10px 18px;margin:32px 0 0;padding:18px 20px;border:1.5px solid rgba(255,255,255,.5);font:400 13px/1.45 var(--mono)}
.stamp dt{text-transform:uppercase;letter-spacing:.06em;color:#C9D0FF}
.stamp dd{margin:0}
.form{background:var(--paper);color:var(--ink);padding:clamp(22px,3vw,36px);display:flex;flex-direction:column;gap:16px;clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%)}
.chips{border:0;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.chips legend{font:500 12px/1 var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--ink2);margin-bottom:10px;padding:0}
.chips label{position:relative}
.chips input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.chips span{display:inline-flex;align-items:center;min-height:40px;padding:0 15px;border:1.5px solid var(--ink);font-weight:600;font-size:14.5px;border-radius:2px;transition:background .15s,color .15s}
.chips input:checked+span{background:var(--ink);color:var(--paper)}
.chips input:focus-visible+span{outline:2px solid var(--blue);outline-offset:2px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fld{display:flex;flex-direction:column;gap:6px}
.fld>span{font:500 12px/1 var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--ink2)}
.fld input,.fld textarea{font:400 16px/1.4 var(--body);color:var(--ink);background:#fff;border:1.5px solid var(--line);border-radius:2px;padding:12px 14px;min-height:48px;transition:border-color .15s}
.fld textarea{resize:vertical}
.fld input:focus,.fld textarea:focus{outline:0;border-color:var(--blue)}
.fld input[aria-invalid=true]{border-color:#D3261B}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink2);cursor:pointer}
.agree input{width:20px;height:20px;margin:1px 0 0;accent-color:var(--blue);flex:none}
.form-msg{min-height:1.4em;font-size:15px;font-weight:600}
.form-msg.ok{color:#127A3A}
.form-msg.err{color:#D3261B}
.form.sent .btn{background:#127A3A}

/* footer */
.foot{background:var(--dark);color:#B7BAC4;padding:36px var(--pad);font-size:14px}
.foot-in{max-width:var(--max);margin:0 auto;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.foot b{color:#fff;font:700 16px/1.3 var(--disp)}
.foot p{margin-top:4px;font-family:var(--mono);font-size:12.5px}

/* reveal */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.8,.2,1),transform .7s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none}

@media (max-width:980px){
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-stage{max-width:620px;justify-self:center}
  .nav{display:none}
  .top .btn-sm{margin-left:auto}
  .sec-head,.why-grid,.form-wrap{grid-template-columns:1fr}
  .spec-row{grid-template-columns:52px minmax(0,1fr)}
  .spec-row>span{padding:16px}
  .spec-row .ds,.spec-row .ob{grid-column:2;border-left:1px solid var(--ink);padding-top:0}
  .spec-row .nm{padding-bottom:8px}
  .spec-row .pos{grid-row:span 3}
  .spec-hd{display:none}
  .spec-row:nth-child(2){border-top:0}
  .line{grid-template-columns:1fr;padding-left:0}
  .line::before,.line::after{top:0;left:13px;width:3px;height:100%}
  .line::after{height:calc(var(--p)*100%);width:3px}
  .line li{padding:0 0 30px 52px}
  .profiles{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:560px){
  body{font-size:16px}
  .top{gap:12px;padding-block:10px}
  .logo-txt small{display:none}
  .row2{grid-template-columns:1fr}
  .stage-hud span:first-child{display:none}
  .why-list li{padding-left:48px}
  .profiles{grid-template-columns:1fr}
  .profiles li{grid-template-columns:52px minmax(0,1fr);padding:14px 16px;column-gap:16px}
  .profiles svg{width:52px;height:52px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .strip-run{animation:none}
  .rv{opacity:1;transform:none;transition:none}
}