/* Слой — shared foundation: tokens, reset, header, buttons, motion */

:root{
  --acc:#F97316;
  --ink:#16385C;        /* dark ground */
  --ink-2:#132F4E;      /* text on light */
  --ink-3:#1C4169;
  --ink-4:#1E4470;      /* grid lines on dark */
  --line-d:#2A5580;     /* hairline on dark */
  --line-d2:#3A6590;
  --mute-d:#A9BDD2;     /* muted text on dark */
  --mute-d2:#C8D6E5;
  --paper:#EEF4FA;      /* light ground */
  --paper-2:#FAFCFE;
  --paper-3:#F5F9FD;
  --line-l:#CCD9E7;     /* hairline on light */
  --line-l2:#B8C8DA;
  --mute-l:#4A6482;     /* muted text on light */
  --ease:cubic-bezier(.16,1,.3,1);
  --f-display:Unbounded,'Noto Sans Armenian',sans-serif;
  --f-body:Onest,'Noto Sans Armenian',system-ui,sans-serif;
  --f-mono:'JetBrains Mono','Noto Sans Armenian',monospace;
  --gutter:48px;
  --maxw:1440px;
}
@media (max-width:1024px){:root{--gutter:32px}}
@media (max-width:640px){:root{--gutter:16px}}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--paper);font-family:var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body.light{background:var(--paper);color:var(--ink-2)}
h1,h2,h3,h4,p{margin:0}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
a:hover{color:var(--acc)}
a.card:hover,a.logo-link:hover{color:inherit}
.bare{appearance:none;-webkit-appearance:none;background:none;border:0;padding:0;margin:0;color:inherit;font:inherit;text-align:left;cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.sr-only{position:absolute!important;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:16px;top:-60px;z-index:100;padding:12px 18px;border-radius:999px;background:var(--acc);color:var(--ink);font-weight:600}
.skip:focus{top:16px}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.mono{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.display{font-family:var(--f-display);font-weight:600;letter-spacing:-.04em;line-height:1.02}
.grid-bg{background-color:var(--ink);background-image:linear-gradient(var(--ink-4) 1px,transparent 1px),linear-gradient(90deg,var(--ink-4) 1px,transparent 1px);background-size:48px 48px}

/* icons + logo */
.ico{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.logo-link{display:inline-flex;align-items:center;gap:12px}
.logo-word{font-family:Unbounded,sans-serif;font-size:22px;font-weight:700;letter-spacing:-.03em}
.logo-tag{align-self:flex-start;margin-top:4px;font-family:var(--f-mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute-d)}
/* MARK IT logo: navy parts follow currentColor (light on dark grounds), accent parts are orange */
.logo{display:block;flex-shrink:0;overflow:visible}
.logo-full{width:120px;height:30px}
.logo .mk-b{fill:currentColor}
.logo .mk-a{fill:var(--acc)}
.logo .mk-check{transition:transform .5s var(--ease)}
.logo-link:hover .mk-check{transform:translate(10px,-14px)}
@media (max-width:640px){.logo-full{width:96px;height:24px}}

/* program tiles: each taught program gets its own signature color */
.ptile{--pt-bg:#3A6590;--pt-fg:#FFFFFF;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:28px;height:28px;border-radius:7px;font-family:var(--f-display);font-size:12px;font-weight:700;letter-spacing:-.02em;line-height:1;box-shadow:inset 0 0 0 1.5px var(--pt-ln,transparent);background:var(--pt-bg);color:var(--pt-fg);vertical-align:middle}
.ptile-xs{width:18px;height:18px;border-radius:5px;font-size:8px;box-shadow:inset 0 0 0 1px var(--pt-ln,transparent)}
.ptile-sm{width:22px;height:22px;border-radius:6px;font-size:10px}
.ptile-lg{width:.95em;height:.95em;border-radius:.22em;font-size:1em}
.ptile-lg>span{font-size:.4em}
/* uploaded logo instead of the letter mark */
.ptile--img{background:none;box-shadow:none;overflow:hidden}
.ptile--img img{display:block;width:100%;height:100%;object-fit:cover}
.ptile[data-p="rhino"]{--pt-bg:#8A9BB0;--pt-fg:#0E2640}
.ptile[data-p="gh"]{--pt-bg:#6DA544;--pt-fg:#10280A}
.ptile[data-p="cad"]{--pt-bg:#E51050;--pt-fg:#FFFFFF}
.ptile[data-p="ps"]{--pt-bg:#001E36;--pt-fg:#31A8FF;--pt-ln:#31A8FF}
.ptile[data-p="ai"]{--pt-bg:#330000;--pt-fg:#FF9A00;--pt-ln:#FF9A00}
.ptile[data-p="ui"]{--pt-bg:#A259FF;--pt-fg:#FFFFFF}
.ptile[data-p="smm"]{--pt-bg:#E1306C;--pt-fg:#FFFFFF}

/* nav link underline */
.nl{position:relative}
.nl::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right center;transition:transform .45s var(--ease)}
.nl:hover::after,.nl.on::after{transform:scaleX(1);transform-origin:left center}
.nl.on::after{background:var(--acc);height:2px}

/* buttons */
.btn{position:relative;overflow:hidden;isolation:isolate;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:10px;height:56px;padding:0 28px;border-radius:999px;border:0;font:inherit;font-size:16px;font-weight:600;white-space:nowrap;background:transparent;color:inherit;transition:color .4s var(--ease)}
.btn::before{content:"";position:absolute;inset:0;background:var(--paper);border-radius:inherit;transform:translateY(102%);transition:transform .5s var(--ease);z-index:-1}
.btn:hover::before{transform:none}
.btn:hover{color:var(--ink)}
.btn.dk::before{background:var(--ink)}
.btn.dk:hover{color:var(--paper)}
.btn.acc{background:var(--acc);color:var(--ink)}
.btn.ghost{border:1px solid #4A6482;font-weight:500}
.btn.sm{height:48px;padding:0 22px;font-size:15px}
.btn .arr{transition:transform .45s var(--ease)}
.btn:hover .arr{transform:translateX(3px) rotate(-45deg)}
.chip{transition:background .3s,color .3s,border-color .3s}
.chip:hover{background:var(--acc);border-color:var(--acc);color:var(--ink)}

/* header */
.site-header{position:sticky;top:0;z-index:40;background:var(--ink);color:var(--paper);border-bottom:1px solid var(--line-d)}
.site-header .wrap{height:88px;display:flex;align-items:center;gap:32px}
.site-nav{flex-grow:1;display:flex;gap:28px;font-size:15px;white-space:nowrap}
.hdr-actions{display:flex;align-items:center;gap:24px;font-size:15px}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-d2);align-items:center;justify-content:center;margin-left:auto}
.mnav{display:none}
@media (max-width:1100px){
  .site-header .wrap{height:72px}
  .site-nav,.hdr-actions .hide-m{display:none}
  .burger{display:flex}
  .hdr-actions{margin-left:auto;gap:12px}
  .mnav{display:block;position:fixed;left:0;right:0;top:72px;bottom:0;z-index:39;background:var(--ink);color:var(--paper);padding:24px var(--gutter) 40px;overflow:auto;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .35s,transform .45s var(--ease),visibility .35s}
  .mnav[data-open="true"]{opacity:1;visibility:visible;transform:none}
  .mnav a{display:block;padding:16px 0;border-bottom:1px solid var(--line-d);font-family:var(--f-display);font-size:24px;font-weight:600;letter-spacing:-.03em}
  .mnav .btn{margin-top:24px;width:100%;font-family:var(--f-body);font-size:16px;border-bottom:0}
}
@media (max-width:640px){.hdr-actions .btn{display:none}}

/* line illustrations */
.ill{fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;overflow:visible}
.ill .dw{stroke-dasharray:1 1;animation-duration:1.6s;animation-timing-function:cubic-bezier(.65,0,.35,1);animation-fill-mode:backwards}
.ill .bd{stroke-width:2.6}
.ill .th{stroke-width:.9;opacity:.55}
.ill .dash{stroke-dasharray:3 4}
.ill .pt{fill:currentColor;stroke:none}
.ill .po{fill:var(--ink)}
.ill .fl{fill:currentColor;fill-opacity:.14}
.ill .ants{stroke-dasharray:4 4;animation:ants .9s linear infinite}
.ill>.dw:nth-child(2){animation-delay:.06s}
.ill>.dw:nth-child(3){animation-delay:.12s}
.ill>.dw:nth-child(4){animation-delay:.18s}
.ill>.dw:nth-child(5){animation-delay:.24s}
.ill>.dw:nth-child(6){animation-delay:.3s}
.ill>.dw:nth-child(7){animation-delay:.36s}
.ill>.dw:nth-child(8){animation-delay:.42s}
.ill>.dw:nth-child(9){animation-delay:.48s}
.ill>.dw:nth-child(10){animation-delay:.54s}
.ill>.dw:nth-child(11){animation-delay:.6s}
[data-in] .ill .dw,.ill[data-in] .dw{animation-name:draw}
.card:hover .ill .dw{animation-name:draw2}

/* scroll reveal: common.js adds [data-in] when visible */
[data-rv]{animation-duration:1s;animation-timing-function:var(--ease);animation-fill-mode:backwards}
.js [data-rv]:not([data-in]){opacity:0}
[data-rv][data-in]{animation-name:rvUp}
[data-rv="fade"][data-in]{animation-name:rvFade}
[data-rv="clip"][data-in]{animation-name:rvClip;animation-duration:1.3s}
[data-rv="line"]{transform-origin:left center}
[data-rv="line"][data-in]{animation-name:rvLine;animation-duration:1.4s}
[data-d="1"]{animation-delay:.08s}
[data-d="2"]{animation-delay:.16s}
[data-d="3"]{animation-delay:.24s}
[data-d="4"]{animation-delay:.32s}
[data-d="5"]{animation-delay:.4s}
[data-d="6"]{animation-delay:.48s}
.mask{display:block;overflow:hidden;padding:0 .04em .1em 0}
.mask>span{display:inline-block;animation:rise 1.2s var(--ease) backwards}

/* cards */
.card{transition:transform .6s var(--ease),box-shadow .6s}
.card:hover{transform:translateY(-8px)}
.zoom{transition:transform 1s var(--ease)}
.card:hover .zoom{transform:scale(1.07)}
/* uploaded pictures (course card, direction panel): the whole picture is always visible, never cropped;
   a blurred copy of it (--cover) fills whatever is left around a picture that isn't 3:2 */
.cc-art--img,.row-art--img{background-image:none}
.cc-art--img::before,.row-art--img::before{content:"";position:absolute;inset:-32px;background:var(--cover) center/cover no-repeat;filter:blur(28px)}
.cc-cover,.row-cover{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:contain}
/* on a card with a picture the chips get a solid ground to stay readable */
.cc-art--img .cc-level{border-color:transparent;background:rgba(19,47,78,.78);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.cc-art--img .cc-file{padding:4px 8px;border-radius:6px;background:rgba(19,47,78,.78);color:var(--paper)}
.go{border:1px solid currentColor;transition:transform .5s var(--ease),background .3s,color .3s,border-color .3s}
.card:hover .go{transform:rotate(-45deg);background:var(--acc);border-color:var(--acc);color:var(--ink)}

/* footer */
.site-footer{background:var(--ink);color:var(--paper);border-top:1px solid var(--line-d)}

.progress{position:fixed;left:0;top:0;width:100%;height:3px;background:var(--acc);transform:scaleX(0);transform-origin:left center;z-index:60;pointer-events:none}
@supports (animation-timeline: scroll()){.progress{animation:rvLine linear both;animation-timeline:scroll(root)}}

@keyframes rise{from{transform:translateY(110%)}to{transform:none}}
@keyframes rvUp{from{opacity:0;transform:translateY(48px)}to{opacity:1;transform:none}}
@keyframes rvFade{from{opacity:0}to{opacity:1}}
@keyframes rvClip{from{clip-path:inset(0 0 100% 0)}to{clip-path:inset(0 0 0 0)}}
@keyframes rvLine{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes draw{from{stroke-dashoffset:1}to{stroke-dashoffset:0}}
@keyframes draw2{from{stroke-dashoffset:1}to{stroke-dashoffset:0}}
@keyframes ants{to{stroke-dashoffset:-8}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulse{0%{box-shadow:0 0 0 0 var(--acc)}100%{box-shadow:0 0 0 14px transparent}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js [data-rv]:not([data-in]){opacity:1}
}