:root {
  --ink: #111215;
  --paper: #f5f4ef;
  --white: #fff;
  --blue: #2137d8;
  --blue-dark: #1424a9;
  --gold: #a08f32;
  --line: rgba(17, 18, 21, .17);
  --header-height: 5.75rem;
  --max: 84rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Arial, Helvetica, sans-serif; font-size: 1rem; line-height: 1.65; overflow-x: hidden; }
body.dialog-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid #ffcf3e; outline-offset: 4px; }

.skip-link { position: fixed; z-index: 999; left: 1rem; top: 1rem; padding: .7rem 1rem; background: var(--white); transform: translateY(-200%); }
.skip-link:focus { transform: none; }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; height: var(--header-height); display: grid; grid-template-columns: minmax(12rem, 1fr) auto; align-items: center; gap: 2rem; padding: 0 clamp(1rem, 4vw, 4.5rem); background: rgba(245, 244, 239, .94); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.brand { display: grid; place-items: center; width: 4.75rem; height: 4.75rem; text-decoration: none; }
.brand-logo { width: 100%; height: 100%; object-fit: contain; }
.main-nav { position: relative; display: flex; align-items: center; gap: clamp(1rem, 2.6vw, 2.8rem); height: 100%; }
.nav-link { position: relative; z-index: 1; display: grid; place-items: center; height: 100%; text-decoration: none; text-transform: uppercase; letter-spacing: .11em; font-size: .75rem; font-weight: 700; }
.nav-indicator { position: absolute; left: 0; bottom: 0; width: 0; height: .28rem; background: var(--blue); transform: translateX(0); transition: transform .35s cubic-bezier(.2,.8,.2,1), width .35s cubic-bezier(.2,.8,.2,1); }
.menu-toggle { display: none; border: 0; background: transparent; padding: .7rem 0; text-transform: uppercase; letter-spacing: .12em; font-weight: 700; }

main { display: block; }
.hero { min-height: 100svh; padding: calc(var(--header-height) + clamp(4rem, 9vw, 9rem)) max(1rem, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(16rem, .75fr); align-items: center; gap: clamp(3rem, 8vw, 8rem); background: var(--paper); }
.hero-copy { max-width: 54rem; }
.eyebrow { margin: 0 0 1.5rem; font-size: .78rem; line-height: 1.2; text-transform: uppercase; letter-spacing: .2em; font-weight: 800; }
.hero h1 { margin: 0; font-size: clamp(3.7rem, 8.7vw, 8.9rem); line-height: .86; letter-spacing: -.075em; text-transform: uppercase; }
.hero h1 span { color: var(--gold); }
.hero h1 em { font-style: normal; }
.hero-lead { max-width: 42rem; margin: 2.5rem 0 2rem; font-size: clamp(1.12rem, 1.6vw, 1.4rem); line-height: 1.55; }
.text-link { display: inline-flex; gap: .8rem; align-items: center; text-underline-offset: .4rem; font-weight: 700; }
.hero-mark { justify-self: end; width: min(27vw, 22rem); aspect-ratio: 1; display: grid; place-content: center; text-align: center; color: var(--white); background: var(--ink); border-radius: 50%; transform: rotate(7deg); box-shadow: 1.2rem 1.2rem 0 var(--gold); }
.hero-mark span { font-size: clamp(4rem, 8vw, 8rem); line-height: .8; font-weight: 900; letter-spacing: -.09em; }
.hero-mark small { margin-top: 1.1rem; text-transform: uppercase; font-weight: 700; letter-spacing: .13em; line-height: 1.4; }

.carousel-section { padding: clamp(5rem, 9vw, 9rem) max(1rem, calc((100vw - var(--max)) / 2)); color: var(--white); background: var(--ink); }
.section-heading { max-width: 44rem; }
.section-heading h2, .footer-heading h2, .application h2 { margin: 0; font-size: clamp(2.6rem, 5.5vw, 5.6rem); line-height: .98; letter-spacing: -.055em; }
.section-heading--light { margin-bottom: 2.5rem; }
.carousel { position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.2); border-radius: 1.2rem; background: #26282e; }
.carousel-track { display: flex; transition: transform .65s cubic-bezier(.2,.8,.2,1); }
.slide { position: relative; flex: 0 0 100%; min-height: clamp(29rem, 56vw, 43rem); isolation: isolate; background: var(--slide-image) center / cover no-repeat; }
.slide-shade { position: absolute; z-index: -1; inset: 0; background: linear-gradient(90deg, rgba(245,244,239,.92) 0%, rgba(245,244,239,.74) 40%, rgba(17,18,21,.08) 76%); }
.slide--dark .slide-shade { background: linear-gradient(90deg, rgba(17,18,21,.86), rgba(17,18,21,.32) 68%, rgba(17,18,21,.08)); }
.slide-content { width: min(45rem, 74%); min-height: inherit; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 1.15rem; padding: clamp(2rem, 6vw, 6.2rem); color: var(--ink); }
.slide--dark .slide-content { color: var(--white); }
.slide-number { margin-bottom: .6rem; font-size: .75rem; letter-spacing: .2em; font-weight: 800; }
.question { max-width: 100%; padding: .18rem 0 .26rem; border: 0; border-bottom: 2px solid currentColor; color: inherit; background: transparent; font-size: clamp(1.6rem, 3.8vw, 4.2rem); line-height: 1.07; letter-spacing: -.045em; font-weight: 750; text-align: left; cursor: pointer; transition: color .2s, transform .2s; }
.question:hover { color: var(--blue); transform: translateX(.4rem); }
.slide--dark .question:hover { color: #a8b2ff; }
.carousel-arrow { position: absolute; z-index: 2; bottom: 1.4rem; width: 3.25rem; height: 3.25rem; border: 1px solid currentColor; border-radius: 50%; color: var(--white); background: rgba(17,18,21,.78); cursor: pointer; }
.carousel-arrow--prev { right: 5.3rem; }
.carousel-arrow--next { right: 1.4rem; }
.carousel-arrow:hover { color: var(--ink); background: var(--white); }
.carousel-footer { display: flex; justify-content: space-between; align-items: center; gap: 2rem; min-height: 5.8rem; padding: 1.2rem 10rem 1.2rem 1.5rem; background: var(--ink); }
.carousel-footer p { margin: 0; color: rgba(255,255,255,.7); font-size: .88rem; }
.carousel-dots { display: flex; gap: .65rem; }
.carousel-dot { width: 2.6rem; height: .28rem; padding: 0; border: 0; background: rgba(255,255,255,.28); cursor: pointer; transition: background .2s, width .2s; }
.carousel-dot.is-active { width: 4rem; background: var(--white); }

.content-section { position: relative; padding: clamp(5rem, 10vw, 10rem) max(1rem, calc((100vw - var(--max)) / 2)); border-bottom: 1px solid var(--line); }
.section-index { position: absolute; top: 2rem; right: max(1rem, calc((100vw - var(--max)) / 2)); color: rgba(17,18,21,.28); font-size: clamp(5rem, 13vw, 12rem); line-height: 1; font-weight: 900; letter-spacing: -.08em; }
.content-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(18rem, .85fr) minmax(20rem, 1.15fr); gap: clamp(3rem, 9vw, 9rem); align-items: start; }
.prose { max-width: 48rem; font-size: clamp(1.1rem, 1.65vw, 1.42rem); }
.prose p { margin: 0 0 1.4rem; }
.prose a { color: var(--blue); text-decoration-thickness: 2px; text-underline-offset: .25rem; }
.content-section--blue { color: var(--white); background: var(--blue); border: 0; }
.content-section--blue .section-index { color: rgba(255,255,255,.18); }
.content-section--blue .prose a { color: var(--white); }

.application { min-height: 78svh; display: grid; place-content: center; justify-items: center; padding: 7rem 1rem; text-align: center; color: var(--white); background: var(--ink); }
.application h2 { max-width: 60rem; }
.application-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-top: 3.2rem; }
.button { display: inline-flex; min-height: 3.7rem; align-items: center; justify-content: center; padding: .9rem 1.6rem; border: 2px solid var(--white); text-decoration: none; text-transform: uppercase; letter-spacing: .1em; font-size: .78rem; font-weight: 800; transition: color .2s, background .2s, transform .2s; }
.button:hover { transform: translateY(-.2rem); }
.button--primary { color: var(--ink); background: var(--white); }
.button--primary:hover { color: var(--white); background: var(--blue); border-color: var(--blue); }
.button--secondary:hover { color: var(--ink); background: var(--white); }

.site-footer { padding: clamp(5rem, 9vw, 9rem) max(1rem, calc((100vw - var(--max)) / 2)) 3rem; background: var(--white); }
.footer-heading { display: grid; grid-template-columns: .7fr 1.3fr; gap: 2rem; align-items: end; margin-bottom: 4rem; }
/* Original useful links; only tooltip colors differ from the original site. */
@font-face { font-family: 'Aileron Links'; src: url('assets/Aileron-Light.otf') format('opentype'); font-display: swap; }
.partner-grid { display: flow-root; }
.partner { position: relative; float: left; margin-left: 2%; margin-bottom: 4%; padding: 10px; border-radius: 35px; color: white; background: black; font-family: 'Aileron Links', sans-serif; line-height: normal; text-decoration: none; }
.partner img { width: auto; height: 100%; max-height: 75px; }
.partner--matematika img { width: 143px; }
.partner--brain-fitness img { width: 238px; }
.partner:nth-child(3) img { width: 99px; }
.partner:nth-child(4) img { width: 92px; }
.partner:nth-child(5) img { width: 144px; }
.partner-tooltip { box-sizing: content-box; visibility: hidden; position: absolute; z-index: 2; top: 120%; left: 50%; width: 100%; margin-left: calc(-50% - 5px); padding: 5px; border-radius: 6px; background: var(--blue); color: white; text-align: center; font-size: .7rem; line-height: normal; }
.partner-tooltip::before { content: ""; position: absolute; bottom: 100%; left: 50%; margin-left: -5px; border: 5px solid transparent; border-bottom-color: var(--blue); }
.partner-tooltip::after { content: ""; position: absolute; bottom: 100%; left: 0; width: 100%; height: 24px; }
.partner:hover .partner-tooltip, .partner:focus-visible .partner-tooltip { visibility: visible; }
.partner.tooltip-dismissed .partner-tooltip { visibility: hidden; }
/* Original button markup and dimensions, scoped to avoid redesign styles. */
.footer-links { display: flow-root; clear: both; height: 120px; text-align: center; font-size: 16px; }
.footer-links a { text-decoration: none; }
.footer-links .ellipse { box-sizing: content-box; border-radius: 35px; position: relative; float: left; background-color: black; padding: 10px; margin-bottom: 4%; color: white; font-family: 'Aileron Links', sans-serif; line-height: normal; margin-left: 2%; }
.footer-links .half_ellipse { width: 96%; box-sizing: border-box; background-color: white; position: absolute; border-radius: 50% / 0 0 27px 27px; margin: 0; }
.footer-links .stred { top: 55%; left: 2%; }
.footer-credits { display: flex; align-items: flex-end; justify-content: space-between; gap: 3rem; padding-top: 3rem; }
.funding-logo { width: min(30rem, 68vw); height: auto; }
.copyright-logo { width: 10rem; }

.answer-dialog { width: min(58rem, calc(100% - 2rem)); max-height: min(48rem, calc(100svh - 2rem)); margin: auto; padding: 0; border: 0; border-radius: 1rem; color: var(--ink); background: var(--paper); box-shadow: 0 2rem 7rem rgba(0,0,0,.35); }
.answer-dialog::backdrop { background: rgba(17,18,21,.76); backdrop-filter: blur(7px); }
.dialog-close { position: sticky; z-index: 1; top: 0; float: right; display: flex; gap: .5rem; align-items: center; margin: 1.1rem 1.1rem 0 0; padding: .55rem .8rem; border: 1px solid var(--ink); background: var(--paper); text-transform: uppercase; letter-spacing: .12em; font-size: .7rem; font-weight: 800; cursor: pointer; }
.dialog-close span { font-size: 1.2rem; line-height: .7; }
.dialog-body { padding: clamp(2rem, 6vw, 5.5rem); }
.dialog-body h2 { margin: 0 3rem 2rem 0; font-size: clamp(2rem, 5vw, 4.6rem); line-height: 1; letter-spacing: -.05em; }
.answer-content { font-size: clamp(1.05rem, 1.8vw, 1.3rem); }
.answer-content a { color: var(--blue); text-underline-offset: .25rem; }
.answer-content li { margin-bottom: .6rem; }
.answer-content blockquote { margin: 0 0 1.6rem; padding: 1.5rem 0 0 1.5rem; border-top: 1px solid var(--line); border-left: 4px solid var(--blue); }
.answer-content cite { display: block; margin-top: 1rem; font-style: normal; font-weight: 800; }

@media (max-width: 900px) {
  :root { --header-height: 4.8rem; }
  .site-header { grid-template-columns: 1fr auto; }
  .menu-toggle { display: flex; gap: .7rem; align-items: center; cursor: pointer; }
  .menu-toggle__icon { display: grid; gap: .33rem; width: 1.7rem; }
  .menu-toggle__icon i { height: 2px; background: var(--ink); transition: transform .25s; }
  .menu-toggle[aria-expanded="true"] .menu-toggle__icon i:first-child { transform: translateY(.16rem) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-toggle__icon i:last-child { transform: translateY(-.16rem) rotate(-45deg); }
  .main-nav { position: fixed; inset: var(--header-height) 0 auto; height: auto; display: grid; gap: 0; padding: 1rem; background: var(--paper); border-bottom: 1px solid var(--line); transform: translateY(-130%); visibility: hidden; transition: transform .3s, visibility .3s; }
  .main-nav.is-open { transform: none; visibility: visible; }
  .nav-link { justify-content: start; min-height: 3.25rem; padding: 0 1rem; border-bottom: 1px solid var(--line); }
  .nav-link.is-active { color: var(--blue); }
  .nav-indicator { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: calc(var(--header-height) + 5rem); }
  .hero-mark { justify-self: start; width: min(72vw, 20rem); }
  .content-grid, .footer-heading { grid-template-columns: 1fr; }


}

@media (max-width: 620px) {
  .brand { width: 3.9rem; height: 3.9rem; }
  .hero h1 em { display: block; }
  .hero { padding-bottom: 5rem; }
  .hero h1 { font-size: clamp(3.1rem, 16vw, 5rem); }
  .hero-mark { justify-self: center; }
  .carousel-section { padding-inline: 0; }
  .carousel-section > .section-heading { padding-inline: 1rem; }
  .carousel { border-inline: 0; border-radius: 0; }
  .slide { min-height: 34rem; background-position: 63% center; }
  .slide-shade, .slide--dark .slide-shade { background: linear-gradient(0deg, rgba(17,18,21,.84), rgba(17,18,21,.2) 75%); }
  .slide-content, .slide--dark .slide-content { width: 100%; min-height: inherit; justify-content: flex-end; padding: 2rem 1rem 3rem; color: var(--white); }
  .question { font-size: clamp(1.75rem, 9vw, 2.8rem); }
  .question:hover, .slide--dark .question:hover { color: #a8b2ff; }
  .carousel-arrow { top: 1rem; bottom: auto; }
  .carousel-footer { align-items: flex-start; flex-direction: column; padding: 1.2rem 1rem; }
  .carousel-footer p { display: none; }
  .carousel-dot { width: 1.8rem; }
  .carousel-dot.is-active { width: 3rem; }
  .content-grid { gap: 2.5rem; }
  .section-index { opacity: .55; }



  .footer-credits { align-items: flex-start; flex-direction: column; }
  .funding-logo { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}