/* ATF website — styles follow the ATF Brand Assets (Sept 2026). Tokens below are the brand palette; do not add colours. */
@font-face{font-family:'Bebas Neue';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/bebas-neue.woff2) format('woff2')}
@font-face{font-family:'Montserrat';font-style:normal;font-weight:100 900;font-display:swap;src:url(fonts/montserrat.woff2) format('woff2')}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(fonts/space-grotesk.woff2) format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400 800;font-display:swap;src:url(fonts/jetbrains-mono.woff2) format('woff2')}
:root{
  --future-blue:#889CE7;      /* mark, accents, rules; text on black only */
  --tech-black:#000000;       /* dark backgrounds */
  --logo-ink:#121317;         /* body text on light */
  --soft-gray:#F3F3F3;        /* page and card backgrounds */
  --industrial-gray:#9EA0AD;  /* dividers, UI; text on black only */
  --deep-blue:#4F63B8;        /* links and blue text on light */
  --text-gray:#666874;        /* secondary text on light */
  --white:#FFFFFF;

  --f-display:'Bebas Neue',Impact,'Arial Narrow',sans-serif;
  --f-sub:'Montserrat',Arial,sans-serif;
  --f-body:'Space Grotesk',Arial,sans-serif;
  --f-mono:'JetBrains Mono',Consolas,ui-monospace,monospace;

  --s1:4px;--s2:8px;--s3:16px;--s4:24px;--s5:32px;--s6:48px;--s7:64px;--s8:96px;--s9:128px;
  --wrap:1200px;--gutter:clamp(16px,4vw,40px);
  --radius:4px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--soft-gray);color:var(--logo-ink);font:400 16px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--deep-blue);text-underline-offset:3px}
:focus-visible{outline:3px solid var(--future-blue);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-9999px;top:8px;background:var(--white);color:var(--logo-ink);padding:8px 16px;z-index:100;font-family:var(--f-sub);font-weight:600}
.skip:focus{left:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}

/* type */
h1,h2{font-family:var(--f-display);font-weight:400;letter-spacing:.01em;line-height:.98;margin:0}
h1{font-size:clamp(2.4rem,3.6vw,3.5rem)}
h2{font-size:clamp(2rem,3vw,2.75rem);max-width:22ch}
h3{font-family:var(--f-sub);font-weight:700;font-size:1.08rem;line-height:1.3;margin:0 0 var(--s2)}
p{margin:0 0 var(--s3)}
.eyebrow{font-family:var(--f-mono);font-size:.75rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--deep-blue);display:flex;align-items:center;gap:12px;margin:0 0 var(--s3)}
.eyebrow::before{content:"";width:28px;height:2px;background:currentColor}
.lede{font-size:clamp(1rem,1.15vw,1.1rem);max-width:62ch;color:var(--text-gray)}

/* dark sections */
.dark{background:var(--tech-black);color:var(--white)}
.dark .eyebrow{color:var(--future-blue)}
.dark .lede,.dark p.muted{color:var(--industrial-gray)}
.dark a{color:var(--future-blue)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:11px 18px;border-radius:var(--radius);font:600 .9rem/1.2 var(--f-sub);text-decoration:none;border:2px solid transparent;transition:background .15s,color .15s,border-color .15s}
.btn-primary{background:var(--logo-ink);color:var(--white)}
.btn-primary:hover{background:var(--deep-blue)}
.btn-secondary{border-color:var(--logo-ink);color:var(--logo-ink)}
.btn-secondary:hover{background:var(--logo-ink);color:var(--white)}
.dark .btn-primary{background:var(--future-blue);color:var(--tech-black)}
.dark .btn-primary:hover{background:var(--white)}
.dark .btn-secondary{border-color:var(--industrial-gray);color:var(--white)}
.dark .btn-secondary:hover{border-color:var(--white);background:transparent}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btns.mt,.more{margin-top:var(--s5)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--tech-black);border-bottom:1px solid #1d1f25}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:var(--s4);min-height:64px}
.brand{display:block;padding:8px 0}
.brand img{width:200px;height:auto}
.nav{display:flex;align-items:center;gap:var(--s4)}
.nav ul{display:flex;gap:var(--s4);list-style:none;margin:0;padding:0}
.nav a{color:var(--industrial-gray);text-decoration:none;font:500 .9rem var(--f-sub)}
.nav a:hover{color:var(--white)}
.nav .btn{min-height:40px;padding:8px 16px;font-size:.85rem}
.site-header .btn-primary{background:var(--future-blue);color:var(--tech-black)}
.site-header .btn-primary:hover{background:var(--white);color:var(--tech-black)}
.menu-btn{display:none;background:none;border:1px solid #33353d;color:var(--white);border-radius:var(--radius);min-height:44px;padding:8px 14px;font:600 .85rem var(--f-sub)}
@media (max-width:960px){
  .menu-btn{display:inline-flex}
  .nav{position:absolute;left:0;right:0;top:100%;background:var(--tech-black);flex-direction:column;align-items:stretch;padding:var(--s3) var(--gutter) var(--s4);border-bottom:1px solid #1d1f25;display:none}
  .nav.open{display:flex}
  .nav ul{flex-direction:column;gap:0}
  .nav ul a{display:block;padding:12px 0;border-bottom:1px solid #1d1f25}
}

/* sections */
section{padding:clamp(56px,6.5vw,96px) 0}
.sec-head{margin-bottom:clamp(28px,4vw,48px)}
.sec-head h2+p{margin-top:var(--s4)}
.flush{padding-top:0;scroll-margin-top:88px} /* follows a section with the same background; the margin clears the sticky header on anchor links */
.on-white{background:var(--white)}

/* hero */
.hero{padding:clamp(32px,4vw,56px) 0 clamp(40px,4.5vw,64px);position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
.hero h1{max-width:19ch}
.hero .lede{margin:var(--s3) 0 var(--s4)}
.hero .lede strong{color:var(--white);font-weight:600}
.rotator{display:block;color:var(--future-blue);transition:transform .35s ease,opacity .35s ease}
.rotator.out{transform:translateY(-.35em);opacity:0}
.rotator.in{transform:translateY(.35em);opacity:0;transition:none}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.hero-art{margin:0;width:100%}
.hero-art img{width:100%;height:auto;aspect-ratio:1536/1024;border-radius:var(--radius)}
.hero-art figcaption{color:var(--industrial-gray);margin-top:var(--s2)}
.hero-art picture,.photo picture{display:block}
.hero-foot{margin-top:clamp(32px,4vw,48px);display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #23252c}
.hero-foot div{padding:var(--s4) var(--s4) 0 0}
.hero-foot dt{font:700 .95rem var(--f-sub);color:var(--white);margin-bottom:4px}
.hero-foot dd{margin:0;color:var(--industrial-gray);font-size:.95rem}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-art{max-width:560px}.hero-art img{aspect-ratio:1/1}.hero-foot{grid-template-columns:1fr}.hero-foot div{padding:var(--s3) 0;border-bottom:1px solid #23252c}}

/* cards */
.grid{display:grid;gap:var(--s4)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media (max-width:960px){.g3{grid-template-columns:1fr}}
@media (max-width:720px){.g2{grid-template-columns:1fr}}
.card{background:var(--white);border-radius:var(--radius);padding:var(--s5);border-top:3px solid var(--logo-ink)}
.card p{color:var(--text-gray);margin:0}
.ic{width:32px;height:32px;fill:currentColor;color:var(--deep-blue);margin-bottom:var(--s4)}
.dark .card{background:#0c0d10;border:1px solid #23252c;border-top:3px solid var(--future-blue)}
.dark .card p{color:var(--industrial-gray)}
.dark .ic{color:var(--future-blue)}

.split{display:grid;grid-template-columns:5fr 7fr;gap:clamp(32px,6vw,96px);align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr}}

/* maturity board */
.status{margin-top:var(--s5);display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--industrial-gray);border-radius:var(--radius);background:var(--white)}
.status>div{padding:var(--s4) var(--s5)}
.status>div+div{border-left:1px solid var(--industrial-gray)}
.status .tag{display:inline-flex;align-items:center;gap:8px;font:500 .8rem var(--f-mono);letter-spacing:.02em;margin-bottom:var(--s2)}
.status .tag::before{content:"";width:10px;height:10px;background:var(--deep-blue)}
.status .dev .tag::before{background:transparent;border:2px solid var(--deep-blue)}
.status p{margin:0}
@media (max-width:720px){.status{grid-template-columns:1fr}.status>div+div{border-left:0;border-top:1px solid var(--industrial-gray)}}

/* benefits list */
.benefits{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid #23252c}
.benefits div{padding:var(--s5) var(--s5) var(--s5) 0;border-bottom:1px solid #23252c}
.benefits div:nth-child(odd){padding-right:var(--s5);border-right:1px solid #23252c}
.benefits div:nth-child(even){padding-left:var(--s5)}
.benefits p{color:var(--industrial-gray);margin:0}
@media (max-width:720px){.benefits{grid-template-columns:1fr}.benefits div,.benefits div:nth-child(even),.benefits div:nth-child(odd){padding:var(--s4) 0;border-right:0}}
.trust{margin-top:var(--s6);padding-left:var(--s4);border-left:3px solid var(--future-blue);font-size:1.15rem;max-width:60ch;color:var(--white)}

/* architecture */
.arch{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0}
.arch li{position:relative;padding:var(--s4) var(--s4) var(--s4) 0;border-top:3px solid var(--logo-ink)}
.arch li+li{padding-left:var(--s4);border-left:1px solid var(--industrial-gray)}
.arch li.opt{border-top-style:dashed;border-top-color:var(--industrial-gray)}
.arch .k{font:500 .8rem var(--f-mono);letter-spacing:.02em;color:var(--deep-blue);display:block;margin-bottom:var(--s3)}
.arch p{color:var(--text-gray);font-size:.95rem;margin:0}
@media (max-width:960px){.arch{grid-template-columns:1fr}.arch li,.arch li+li{padding:var(--s4) 0 var(--s4) var(--s5);border-left:3px solid var(--logo-ink);border-top:0}.arch li.opt{border-left-style:dashed;border-left-color:var(--industrial-gray)}}
figcaption{font:500 .78rem var(--f-mono);letter-spacing:.02em;color:var(--text-gray);margin-top:var(--s3)}

.principles{margin-top:clamp(40px,5vw,64px)}
.principles .head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:var(--s3);margin-bottom:var(--s5)}
.principles h3.big{font-family:var(--f-display);font-weight:400;font-size:clamp(1.7rem,2.4vw,2.1rem);margin:0}
.pill{display:inline-flex;align-items:center;gap:8px;border:1.5px solid var(--deep-blue);color:var(--deep-blue);border-radius:999px;padding:6px 14px;font:500 .8rem var(--f-mono);letter-spacing:.02em}
.pill::before{content:"";width:8px;height:8px;border-radius:50%;border:2px solid currentColor}

/* evidence */
.panel{background:var(--white);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.panel .art{border-bottom:1px solid var(--soft-gray)}
.panel .art img{width:100%;height:auto;aspect-ratio:720/460}
.panel .body{padding:var(--s5);display:flex;flex-direction:column;gap:var(--s3);flex:1}
.panel .body p{margin:0}
.panel .meta{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.panel .meta li{font:500 .8rem var(--f-mono);letter-spacing:.02em;background:var(--soft-gray);padding:4px 10px;border-radius:2px;color:var(--logo-ink)}
.qual{font-size:.9rem;color:var(--text-gray);border-top:1px solid var(--soft-gray);padding-top:var(--s3);margin-top:auto}

/* journey */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s4)}
.steps li{border-top:1px solid var(--industrial-gray);padding-top:var(--s4)}
.steps .n{font-family:var(--f-display);font-size:2.8rem;line-height:1;color:var(--deep-blue);display:block;margin-bottom:var(--s3)}
.steps p{color:var(--text-gray);margin:0}
@media (max-width:820px){.steps{grid-template-columns:1fr}}

/* team */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s4)}
@media (max-width:960px){.team{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.team{grid-template-columns:1fr}}
.person{background:var(--white);border-radius:var(--radius);padding:var(--s4);display:grid;grid-template-columns:72px 1fr;gap:var(--s3);align-items:start}
.person img{width:72px;height:72px;border-radius:50%;object-fit:cover;filter:grayscale(1)}
.person h3{margin:0}
.person .role{font:500 .85rem var(--f-sub);color:var(--deep-blue);margin:2px 0 var(--s2)}
.person p{font-size:.92rem;color:var(--text-gray);margin:0;grid-column:1/-1}

/* cta */
.cta{text-align:left}
.cta h2{max-width:24ch}
.cta .lede{margin:var(--s4) 0 var(--s5)}
.cta .direct{margin:var(--s4) 0 0;color:var(--industrial-gray)}

/* footer */
.site-footer{background:var(--tech-black);color:var(--industrial-gray);border-top:1px solid #1d1f25;padding:var(--s6) 0 var(--s5);font-size:.9rem}
.site-footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--s5);align-items:flex-start}
.site-footer img{width:120px;height:auto}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:0 var(--s4)}
.site-footer a{color:var(--industrial-gray);text-decoration:none}
.site-footer ul a{display:inline-block;padding:11px 0}
.site-footer a:hover{color:var(--white)}
.site-footer .legal{width:100%;border-top:1px solid #1d1f25;padding-top:var(--s4);display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--s3);font-size:.82rem}

/* analytics design list */
.design{list-style:none;margin:0;padding:0;border-top:1px solid var(--industrial-gray)}
.design li{padding:var(--s4) 0;border-bottom:1px solid var(--industrial-gray)}
.design h3{margin-bottom:4px}
.design p{color:var(--text-gray);margin:0}
/* vision page */
.v-hero{padding:clamp(48px,6vw,88px) 0 clamp(40px,5vw,72px)}
.v-hero h1{max-width:22ch}
.v-hero .lede{margin-top:var(--s4)}
.prose{max-width:68ch}
.prose p{font-size:1.08rem}
.analogy{margin:var(--s5) 0 0;padding:var(--s5);background:var(--white);border-left:3px solid var(--deep-blue);border-radius:var(--radius)}
.analogy strong{font-family:var(--f-sub);display:block;margin-bottom:var(--s2)}
.analogy p{margin:0;color:var(--text-gray)}
.note{font:500 .78rem/1.5 var(--f-mono);letter-spacing:.04em;color:var(--text-gray);margin-top:var(--s4)}
.dark .note{color:var(--industrial-gray)}
.doc h2{font-size:clamp(1.5rem,2vw,1.8rem);max-width:none;margin:var(--s6) 0 var(--s3)}
.doc h2:first-child{margin-top:0}
.commit{list-style:none;margin:0;padding:0;display:grid;gap:0}
.commit li{padding:var(--s4) 0 var(--s4) var(--s5);border-bottom:1px solid #23252c;position:relative;color:var(--white);font-size:1.08rem}
.commit li::before{content:"";position:absolute;left:0;top:calc(var(--s4) + 9px);width:12px;height:2px;background:var(--future-blue)}
.commit li:first-child{border-top:1px solid #23252c}

/* signal chain */
.signal{display:grid;grid-template-columns:7fr 5fr;gap:clamp(32px,5vw,64px);align-items:center;margin-bottom:var(--s6)}
.signal-art{margin:0;background:var(--tech-black);border-radius:var(--radius);padding:clamp(8px,1.5vw,16px)}
.signal-art img{width:100%;height:auto;aspect-ratio:720/560}
.signal-art figcaption{color:var(--industrial-gray);padding:4px 4px 0}
.signal-text p{color:var(--text-gray)}
.signal-text .more{margin-bottom:0;font-family:var(--f-sub);font-weight:600}
.chain{list-style:none;margin:var(--s4) 0 0;padding:0;border-top:1px solid var(--industrial-gray)}
.chain li{padding:12px 0;border-bottom:1px solid var(--industrial-gray);font-family:var(--f-sub);font-weight:600;font-size:.95rem}
.chain span{font:500 .78rem var(--f-mono);color:var(--deep-blue);margin-right:16px}
@media (max-width:900px){.signal{grid-template-columns:1fr}}

/* photography */
.photo{margin:0 0 var(--s5)}
.photo img{width:100%;height:auto;aspect-ratio:1536/1024;border-radius:var(--radius);display:block}
.photo figcaption{margin-top:var(--s2)}
.photo-dark{margin:var(--s5) 0 0;max-width:520px}
.photo-dark img{aspect-ratio:1/1} /* square crop at every width: it sits in a narrow column */
.photo-dark figcaption{color:var(--industrial-gray)}
@media (max-width:600px){.photo img{aspect-ratio:1/1}} /* square crops with larger callouts on phones */
.iso{margin:0 0 var(--s5);background:var(--tech-black);border-radius:var(--radius);padding:clamp(8px,2vw,24px)}
.iso picture{display:block}
.iso img{width:100%;max-width:900px;margin:0 auto;height:auto;aspect-ratio:665/460}