/* ===== Aysyt Technologies: design tokens ===== */

/* Light theme (default) */
:root{
  --bg:#ffffff;
  --surface:#ffffff;
  --surface-alt:#f6f7f9;
  --surface-grid:#eef0f4;

  --heading:#0b1220;
  --text:#161d2c;
  --text-secondary:#5b6472;

  --line:#e4e7ee;
  --border-strong:#c7cbd6;

  --blue:#2f5bff;          /* solid fills: buttons, dots */
  --blue-hover:#1c3fd1;
  --blue-text:#1c3fd1;     /* blue used as TEXT, needs contrast on the page bg */
  --blue-soft-bg:#eef2ff;  /* tinted chips and icon tiles */
  --hero-glow:rgba(47,91,255,.16);

  --hub-bg:#0b1220;        /* the high-contrast chip in diagrams and icons */
  --hub-fg:#ffffff;

  /* the deliberately dark feature bands, dark in BOTH themes */
  --band-bg:#0b1220;
  --band-text:#eef0f6;
  --band-text-secondary:#a3aabd;
  --band-line:rgba(238,240,246,.14);
  --band-accent:#7c9bff;

  --nav-bg:rgba(255,255,255,.9);
  --shadow:0 1px 2px rgba(15,23,42,.04),0 10px 30px rgba(15,23,42,.06);
  --shadow-lg:0 20px 60px rgba(15,23,42,.12);

  /* isometric illustration faces */
  --iso-top:#ffffff;
  --iso-left:#e8ebf1;
  --iso-right:#f4f6fa;
  --iso-line:#c3cad8;

  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --ease:cubic-bezier(.22,.8,.28,1);
  --font-display:'Plus Jakarta Sans',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --container:1200px;

  color-scheme:light;
}

/* Dark theme: follows the OS unless the visitor picked light explicitly */
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0a0f18;
    --surface:#111826;
    --surface-alt:#0e1420;
    --surface-grid:#1a2232;

    --heading:#f2f5fa;
    --text:#e4e8f0;
    --text-secondary:#a3adc0;

    --line:#232c3d;
    --border-strong:#3a4459;

    --blue:#2f5bff;
    --blue-hover:#4f74ff;
    --blue-text:#8aa5ff;
    --blue-soft-bg:rgba(91,130,255,.15);
    --hero-glow:rgba(91,130,255,.13);

    --hub-bg:#f2f5fa;
    --hub-fg:#0b1220;

    --band-bg:#060a11;

    --nav-bg:rgba(10,15,24,.88);
    --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px rgba(0,0,0,.35);
    --shadow-lg:0 20px 60px rgba(0,0,0,.55);

    --iso-top:#20293a;
    --iso-left:#111927;
    --iso-right:#1a2333;
    --iso-line:#39445a;

    color-scheme:dark;
  }
}

/* Explicit dark choice always wins */
:root[data-theme="dark"]{
  --bg:#0a0f18;
  --surface:#111826;
  --surface-alt:#0e1420;
  --surface-grid:#1a2232;

  --heading:#f2f5fa;
  --text:#e4e8f0;
  --text-secondary:#a3adc0;

  --line:#232c3d;
  --border-strong:#3a4459;

  --blue:#2f5bff;
  --blue-hover:#4f74ff;
  --blue-text:#8aa5ff;
  --blue-soft-bg:rgba(91,130,255,.15);
  --hero-glow:rgba(91,130,255,.13);

  --hub-bg:#f2f5fa;
  --hub-fg:#0b1220;

  --band-bg:#060a11;

  --nav-bg:rgba(10,15,24,.88);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px rgba(0,0,0,.35);
  --shadow-lg:0 20px 60px rgba(0,0,0,.55);

  --iso-top:#20293a;
  --iso-left:#111927;
  --iso-right:#1a2333;
  --iso-line:#39445a;

  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
html,body{overflow-x:clip}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-body);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  transition:background-color .3s var(--ease),color .3s var(--ease);
}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--heading);margin:0;letter-spacing:-.015em;line-height:1.15}
p{margin:0}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
img,svg{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--blue);color:#fff}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:1rem;top:-4rem;background:var(--blue);color:#fff;padding:.75rem 1.25rem;border-radius:8px;z-index:1000;transition:top .25s var(--ease)}
.skip-link:focus{top:1rem}
:focus-visible{outline:2px solid var(--blue-text);outline-offset:3px;border-radius:4px}

.container{max-width:var(--container);margin:0 auto;padding:0 clamp(1.25rem,4vw,2.5rem)}
.section{padding:clamp(4rem,8vw,6.5rem) 0}
/* the header is fixed, so anchored sections must clear it when jumped to,
   otherwise every nav link parks its own heading behind the bar */
section[id],main[id]{scroll-margin-top:100px}
.section--grey{background:var(--surface-alt)}

.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.8rem;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--blue-text)}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--blue-text);border-radius:2px}

h2.h-section{font-size:clamp(1.7rem,3.4vw,2.5rem);max-width:24ch;margin-top:.9rem}
p.lede{margin-top:1rem;color:var(--text-secondary);font-size:clamp(1rem,1.4vw,1.1rem);max-width:60ch;line-height:1.65}
.section-head{margin-bottom:clamp(2.25rem,5vw,3.25rem)}
.section-head.center{text-align:center;display:flex;flex-direction:column;align-items:center}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.55rem;padding:.85rem 1.5rem;border-radius:999px;
  font-weight:600;font-size:.95rem;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-hover)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--blue-text);color:var(--blue-text)}
.btn svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
@media (pointer:coarse){.btn{min-height:44px}}

/* ===== nav ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;background:var(--nav-bg);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .25s var(--ease),background-color .3s var(--ease)}
.nav.scrolled{border-bottom-color:var(--line)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;padding:1rem clamp(1.25rem,4vw,2.5rem)}
.nav__brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-weight:700;font-size:1.05rem;color:var(--heading)}
.nav__mark{width:28px;height:auto;flex:none}
/* the mark's charcoal element sits close to the dark canvas, so lift it slightly there */
:root[data-theme="dark"] .nav__mark,
:root[data-theme="dark"] .footer-brand__mark{filter:brightness(1.18) saturate(1.05)}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .nav__mark,
  :root:not([data-theme="light"]) .footer-brand__mark{filter:brightness(1.18) saturate(1.05)}
}
.nav__links{display:flex;align-items:center;gap:clamp(1.1rem,2vw,1.9rem)}
.nav__links a{font-size:.92rem;font-weight:500;color:var(--text-secondary);transition:color .2s var(--ease)}
.nav__links a:hover,.nav__links a.active{color:var(--heading)}
.nav__right{display:flex;align-items:center;gap:.85rem}
.nav__toggle{display:none;background:none;border:0;padding:.4rem;color:var(--heading)}

/* theme switch */
.theme-toggle{width:38px;height:38px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  color:var(--heading);display:inline-flex;align-items:center;justify-content:center;flex:none;
  transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease)}
.theme-toggle:hover{border-color:var(--blue-text);color:var(--blue-text)}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .icon-moon{display:none}
:root[data-theme="dark"] .theme-toggle .icon-moon{display:block}
:root[data-theme="dark"] .theme-toggle .icon-sun{display:none}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .theme-toggle .icon-moon{display:block}
  :root:not([data-theme="light"]) .theme-toggle .icon-sun{display:none}
}

@media (max-width:920px){
  /* the panel is fixed to the VIEWPORT, so no ancestor may carry backdrop-filter,
     filter or transform while it is open, or it becomes the containing block and
     collapses this to a few pixels. --nav-h is measured in JS. */
  .nav__links{position:fixed;top:var(--nav-h,72px);left:0;right:0;bottom:0;background:var(--bg);
    flex-direction:column;align-items:flex-start;overflow-y:auto;
    padding:1.5rem clamp(1.25rem,6vw,2.5rem);gap:.25rem;transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease);border-top:1px solid var(--line)}
  .nav__links.open{opacity:1;pointer-events:auto;transform:translateY(0)}
  .nav__links a{padding:.85rem 0;width:100%;border-bottom:1px solid var(--line);font-size:1rem}
  .nav__toggle{display:inline-flex}
  .nav__right{gap:.5rem}
  .nav__right .btn-primary{padding:.6rem 1rem;font-size:.85rem;white-space:nowrap}
  .nav__right .btn-primary svg{display:none}
  .nav__brand{font-size:.95rem;white-space:nowrap}
  .nav__inner{gap:.75rem}
}
@media (max-width:460px){
  .nav__brand{font-size:0;gap:0}
  .nav__brand .nav__mark{width:30px;height:30px}
  .theme-toggle{width:34px;height:34px}
}

/* ===== hero: full-bleed campus, video on capable screens ===== */
.hero{position:relative;isolation:isolate;min-height:min(88vh,760px);display:flex;align-items:center;
  padding:clamp(8rem,15vw,11rem) 0 clamp(4rem,8vw,6rem);overflow:hidden;background:var(--band-bg)}
.hero__media{position:absolute;inset:0;z-index:-2;
  background:url('img/hero.webp') center/cover no-repeat}
.hero__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:0;transition:opacity 1.4s var(--ease)}
.hero__media.video-on .hero__video{opacity:1}
/* the scrim is what keeps the headline readable over any frame of the footage */
.hero__scrim{position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,10,18,.93) 0%,rgba(6,10,18,.82) 34%,rgba(6,10,18,.45) 62%,rgba(6,10,18,.28) 100%),
             linear-gradient(0deg,rgba(6,10,18,.55) 0%,rgba(6,10,18,0) 45%)}
.hero__inner{position:relative;z-index:1;max-width:var(--container);width:100%}
.hero__inner > div{max-width:60ch}
.hero__kicker{display:inline-flex;align-items:center;gap:.5rem;padding:.45rem .9rem;border-radius:999px;
  background:rgba(124,155,255,.16);border:1px solid rgba(124,155,255,.3);color:#cfdcff;
  font-size:.78rem;font-weight:600;letter-spacing:.03em}
.hero h1{margin-top:1.1rem;font-size:clamp(2.1rem,4.8vw,3.5rem);max-width:15ch;color:#fff;text-wrap:balance}
.hero__sub{margin-top:.9rem;font-size:clamp(1.15rem,2vw,1.45rem);font-weight:600;color:#a8c0ff;max-width:22ch}
.hero__desc{margin-top:1.1rem;color:rgba(230,235,245,.86);font-size:1.05rem;max-width:54ch;line-height:1.7}
.hero__ctas{margin-top:2rem;display:flex;gap:.9rem;flex-wrap:wrap}
.btn-onmedia{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.4);backdrop-filter:blur(6px)}
.btn-onmedia:hover{background:rgba(255,255,255,.18);border-color:#fff;color:#fff}

/* ===== trust strip ===== */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface-alt)}
.trust__inner{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(1.25rem,3vw,2rem);padding:clamp(2rem,4vw,2.75rem) 0}
.trust__item{display:flex;flex-direction:column;gap:.35rem}
.trust__item strong{font-family:var(--font-display);font-size:1rem;color:var(--heading)}
.trust__item span{font-size:.88rem;color:var(--text-secondary)}
.trust__head{text-align:center;font-size:.85rem;font-weight:600;color:var(--text-secondary);padding-top:1.5rem}
@media (max-width:820px){.trust__inner{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.trust__inner{grid-template-columns:1fr}}

/* ===== solution pillars ===== */
.card-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem;margin-top:2.25rem}
@media (max-width:1080px){.card-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:700px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:460px){.card-grid{grid-template-columns:1fr}}
.solution-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem 1.35rem;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease)}
.solution-card:hover{border-color:var(--blue-text);box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.solution-card__icon{width:40px;height:40px;border-radius:10px;background:var(--blue-soft-bg);color:var(--blue-text);
  display:flex;align-items:center;justify-content:center;margin-bottom:1rem}
.solution-card__icon svg{width:20px;height:20px}
.solution-card h3{font-size:1.02rem}
.solution-card p{margin-top:.5rem;color:var(--text-secondary);font-size:.9rem;line-height:1.55}

/* ===== signature diagram (dark band in both themes) ===== */
.signature{background:var(--band-bg);color:var(--band-text);position:relative;overflow:hidden}
/* atmospheric campus layer: static image always, video only where it is welcome */
.sig-media{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden;
  background:url('img/onecampus.webp') center/cover no-repeat;opacity:.18}
.signature::before{content:"";position:absolute;inset:0;z-index:1;
  background:radial-gradient(900px 500px at 50% 0%,rgba(47,91,255,.18),transparent 60%);pointer-events:none}
.signature-inner{position:relative;z-index:2}
.signature .eyebrow{color:var(--band-accent)}
.signature .eyebrow::before{background:var(--band-accent)}
.signature h2{color:var(--band-text)}
.sig-copy{max-width:60ch;margin:1.1rem auto 0;text-align:center;color:var(--band-text-secondary);font-size:1.05rem;line-height:1.7}
.sig-diagram{margin-top:clamp(2.5rem,6vw,4rem);display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
@media (max-width:860px){.sig-diagram{grid-template-columns:1fr}}
.sig-pillar{border:1px solid var(--band-line);border-radius:var(--radius);padding:1.5rem;background:rgba(255,255,255,.03);
  transition:border-color .25s var(--ease),background .25s var(--ease)}
.sig-pillar:hover,.sig-pillar.active{border-color:var(--band-accent);background:rgba(124,155,255,.08)}
.sig-pillar__title{font-family:var(--font-display);font-weight:700;color:#fff;font-size:.95rem;letter-spacing:.04em;text-transform:uppercase}
.sig-pillar ul{margin-top:.9rem;display:flex;flex-direction:column;gap:.55rem}
.sig-pillar li{font-size:.9rem;color:var(--band-text-secondary);padding-left:1rem;position:relative}
.sig-pillar li::before{content:"";position:absolute;left:0;top:.55em;width:5px;height:5px;border-radius:50%;background:var(--band-accent)}
.sig-connector{display:flex;flex-direction:column;align-items:center;gap:.5rem;margin:2rem auto 0;max-width:420px}
.sig-connector__line{width:1px;height:32px;background:linear-gradient(var(--band-line),var(--band-accent))}
.sig-hub{padding:.9rem 1.8rem;border-radius:999px;background:linear-gradient(135deg,var(--blue),#7c9bff);
  color:#fff;font-family:var(--font-display);font-weight:700;font-size:.95rem;letter-spacing:.02em;box-shadow:0 10px 40px rgba(47,91,255,.4)}
.sig-institution{margin-top:.5rem;font-size:.85rem;color:var(--band-text-secondary);letter-spacing:.08em;text-transform:uppercase}

/* ===== why aysyt ===== */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin-top:2.5rem}
@media (max-width:900px){.why-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.why-grid{grid-template-columns:1fr}}
.why-card{border-top:2px solid var(--heading);padding-top:1.1rem}
.why-card__num{font-family:var(--font-display);font-weight:700;color:var(--blue-text);font-size:1.05rem}
.why-card h3{margin-top:.6rem;font-size:1.05rem}
.why-card p{margin-top:.55rem;color:var(--text-secondary);font-size:.92rem;line-height:1.6}

/* ===== how we work ===== */
.timeline{margin-top:2.75rem;display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.timeline::before{content:"";position:absolute;top:22px;left:0;right:0;height:1px;background:var(--line);z-index:0}
@media (max-width:820px){.timeline{grid-template-columns:1fr 1fr}.timeline::before{display:none}}
@media (max-width:520px){.timeline{grid-template-columns:1fr}}
.tl-step{position:relative;z-index:1;padding-right:1.5rem}
.tl-step__dot{width:44px;height:44px;border-radius:50%;background:var(--surface-alt);border:2px solid var(--blue);color:var(--blue-text);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:.9rem}
.tl-step h3{margin-top:1rem;font-size:1.05rem}
.tl-step p{margin-top:.5rem;color:var(--text-secondary);font-size:.9rem;line-height:1.6}

/* ===== industries ===== */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;margin-top:2.5rem}
@media (max-width:900px){.industry-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.industry-grid{grid-template-columns:1fr}}
.industry-card{border:1px solid var(--line);border-radius:var(--radius);padding:1.75rem 1.5rem;background:var(--surface);
  transition:box-shadow .25s var(--ease),transform .25s var(--ease)}
.industry-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
/* isometric architectural illustrations: one projection, one stroke weight across all four */
.ind-art{width:100%;height:auto;display:block;margin:-.35rem 0 1rem}
.iso{stroke:var(--iso-line);stroke-width:1.3;stroke-linejoin:round;stroke-linecap:round}
.iso-top{fill:var(--iso-top)}
.iso-left{fill:var(--iso-left)}
.iso-right{fill:var(--iso-right)}
.iso-win{fill:var(--iso-line);opacity:.5;stroke:none}
.iso-accent{fill:var(--blue);opacity:.9;stroke:none}
.iso-tree{fill:var(--iso-left)}
.iso-stroke{fill:none}
.iso-plot{fill:none;stroke:var(--iso-line);stroke-width:1.1;stroke-dasharray:3 4;opacity:.7}
.industry-card h3{font-size:1.02rem}
.industry-card p{margin-top:.5rem;color:var(--text-secondary);font-size:.9rem;line-height:1.55}

/* ===== about ===== */
.about-inner > *{max-width:64ch}
.about-inner .lede + .lede{margin-top:1.1rem}

/* ===== final cta (dark band in both themes) ===== */
.final-cta{background:var(--band-bg);color:var(--band-text);position:relative;overflow:hidden;padding:clamp(5rem,10vw,8rem) 0}
.final-cta::before{content:"";position:absolute;inset:0;pointer-events:none;
  /* the glow sits over a darkening scrim: measured to keep body copy above 4.5:1 on any frame */
  background:radial-gradient(700px 400px at 50% 120%,rgba(47,91,255,.22),transparent 60%),
             linear-gradient(180deg,rgba(6,10,17,.58) 0%,rgba(6,10,17,.52) 45%,rgba(6,10,17,.68) 100%)}
.final-cta__inner{position:relative;z-index:1;text-align:center;display:flex;flex-direction:column;align-items:center}
.final-cta h2{color:var(--band-text);font-size:clamp(1.8rem,4vw,2.7rem);max-width:20ch}
.final-cta p{margin-top:1rem;color:var(--band-text-secondary);max-width:52ch;font-size:1.05rem}
.final-cta__ctas{margin-top:2rem;display:flex;gap:1rem;flex-wrap:wrap;justify-content:center}
.final-cta__email{margin-top:1.5rem;font-size:.9rem;color:var(--band-text-secondary)}
.final-cta__email a{color:var(--band-text);text-decoration:underline;text-underline-offset:3px}

/* ===== footer ===== */
footer{background:var(--surface-alt);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:2rem;padding:clamp(3rem,6vw,4rem) 0 2.5rem}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-weight:700;color:var(--heading)}
.footer-brand__mark{width:26px;height:auto}
.footer-desc{margin-top:1rem;color:var(--text-secondary);font-size:.9rem;max-width:32ch;line-height:1.6}
.footer-col h4{font-size:.82rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-secondary)}
.footer-col ul{margin-top:1rem;display:flex;flex-direction:column;gap:.7rem}
.footer-col a{font-size:.92rem;color:var(--text);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--blue-text)}
.footer-bottom{border-top:1px solid var(--line);padding:1.5rem 0;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:.75rem;font-size:.82rem;color:var(--text-secondary)}
.footer-bottom a{color:var(--text-secondary)}
.footer-bottom a:hover{color:var(--blue-text)}

/* ===== reveal on scroll (progressive enhancement: visible unless JS arms it) ===== */
.reveal{opacity:1;transform:none}
html.js-anim .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
html.js-anim .reveal.in{opacity:1;transform:translateY(0)}
html.js-anim .stagger .reveal{transition-delay:calc(var(--i,0) * 80ms)}
@media (prefers-reduced-motion:reduce){
  html.js-anim .reveal{opacity:1;transform:none;transition:none}
}

/* ===== photography ===== */
.pillar-art{width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--line);
  margin:0 0 2rem;object-fit:cover;aspect-ratio:16/9}
.sys-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;margin-top:2.25rem}
@media (max-width:900px){.sys-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.sys-grid{grid-template-columns:1fr}}
.sys-card{margin:0}
.sys-card img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);
  border:1px solid var(--line)}
.sys-card figcaption{margin-top:.7rem;font-size:.9rem;font-weight:600;color:var(--text)}
.tl-art{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);
  border:1px solid var(--line);margin:1rem 0 .25rem}
img.ind-art{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);
  border:1px solid var(--line);margin:-.35rem 0 1rem;display:block}
.about-art{width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--line);
  object-fit:cover;aspect-ratio:16/10}
.about-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,3.5rem);align-items:center}
.about-inner > *{max-width:none}
.about-inner > div{max-width:60ch}
@media (max-width:900px){.about-inner{grid-template-columns:1fr}}

/* closing band video */
.cta-media{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden;
  background:url('img/onecampus.webp') center/cover no-repeat;opacity:.3}
.cta-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:0;transition:opacity 1.4s var(--ease)}
.cta-media.video-on .cta-video{opacity:1}
.final-cta::before{z-index:1}
.final-cta__inner{z-index:2}

/* ===== nav over the dark hero =====
   Before any scroll the bar floats on the footage; once the page moves it
   becomes the normal solid chrome. */
.nav:not(.scrolled){background:transparent;backdrop-filter:none;border-bottom-color:transparent}
.nav:not(.scrolled) .nav__brand{color:#fff}
.nav:not(.scrolled) .nav__links a{color:rgba(255,255,255,.8)}
.nav:not(.scrolled) .nav__links a:hover{color:#fff}
.nav:not(.scrolled) .nav__toggle{color:#fff}
.nav:not(.scrolled) .theme-toggle{color:#fff;border-color:rgba(255,255,255,.32);background:rgba(255,255,255,.12)}
.nav:not(.scrolled) .theme-toggle:hover{border-color:#fff;color:#fff}
.nav:not(.scrolled) .nav__mark{filter:brightness(1.18) saturate(1.05)}
@media (max-width:920px){
  /* menu open: solid bar, and crucially NO backdrop-filter (see .nav__links above) */
  .nav.menu-open{background:var(--bg);backdrop-filter:none}
  .nav.menu-open .nav__brand,
  .nav.menu-open .nav__toggle{color:var(--heading)}
  .nav.menu-open .nav__mark{filter:none}
  /* the over-hero white link colour must not leak into the open panel */
  .nav.menu-open .nav__links a{color:var(--text)}
  .nav.menu-open .nav__links a:hover{color:var(--blue-text)}
  .nav.menu-open .theme-toggle{color:var(--heading);border-color:var(--line);background:var(--surface)}
}