/* ==========================================================================
   Cognivex Limited — site styles
   Palette validated to WCAG 2.1 AA (see README for contrast table)
   ========================================================================== */

:root{
  /* brand */
  --cobalt:#1A4FE8;
  --cobalt-lift:#5079ED;
  --cobalt-deep:#0A2199;
  --navy:#07123F;
  --navy-2:#0B1A4A;
  --cyan:#3FC9FF;

  /* light-first surfaces */
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;        /* alternating sections, for rhythm */
  --bg-foot:#22262E;       /* graphite footer — 15.17:1 against white */
  --surface:#FFFFFF;
  --surface-2:#F7F9FC;
  --line:rgba(10,18,48,.13);
  --line-soft:rgba(10,18,48,.09);
  --rule:rgba(10,18,48,.07);

  /* text */
  --ink:#0A1230;           /* headings  18.39:1 on white */
  --body:#4A5468;          /* body       7.61:1 on white */
  --on-dark:#F6F1E8;
  --on-dark-muted:#B9C3DD;

  /* Red is now the action colour, not just punctuation — and deep rather
     than bright, which also buys contrast: 7.21:1 instead of 5.52:1. */
  --mark:#A32A22;          /* deep brick — 7.21:1 on white */
  --accent:#A32A22;        /* CTA fill   — white label 7.21:1 */
  --accent-hi:#8F2419;     /* hover      — white label 8.63:1 */
  --accent-ink:#FFFFFF;

  /* type */
  --font-display:'Lexend',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-body:'DM Sans',system-ui,-apple-system,'Segoe UI',sans-serif;

  /* space */
  --wrap:1280px;
  --gut:clamp(1.25rem,4vw,2.5rem);
  --sec-y:clamp(5.5rem,12vw,10rem);
  --measure:42rem;

  /* radius + shadow */
  --r-sm:10px; --r:16px; --r-lg:24px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(10,18,48,.05), 0 2px 8px rgba(10,18,48,.05);
  --sh-2:0 2px 4px rgba(10,18,48,.06), 0 8px 24px rgba(10,18,48,.08);
  --sh-3:0 10px 20px rgba(10,18,48,.07), 0 24px 56px rgba(10,18,48,.10);
  --sh-accent:0 10px 26px rgba(163,42,34,.24);

  /* motion */
  --t-fast:150ms; --t:240ms; --t-slow:380ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  color:var(--body);
  background:var(--bg);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* Display type is set large but LIGHT — weight 400 with near-solid leading
   and negative tracking. The authority comes from scale and restraint, not
   from boldness. */
h1,h2,h3{font-family:var(--font-display);color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(2.6rem,6.4vw,4.6rem);font-weight:400;line-height:1.02;letter-spacing:-.032em}
h2{font-size:clamp(2rem,4.2vw,3.1rem);font-weight:400;line-height:1.06;letter-spacing:-.028em}
h3{font-size:1.18rem;font-weight:500;line-height:1.3;letter-spacing:-.012em}
p{margin:0 0 1rem}
a{color:var(--cobalt);text-decoration-thickness:1px;text-underline-offset:3px}
img,svg{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0;list-style:none}

/* a11y ------------------------------------------------------------------ */
.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--accent);color:var(--accent-ink);padding:.9rem 1.3rem;border-radius:0 0 var(--r-sm) 0;
  font-weight:500;
}
.skip:focus{left:0}
:focus-visible{outline:3px solid var--cyan);outline-offset:3px;border-radius:4px}
.band-dark :focus-visible{outline-color:var(--cyan)}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.eyebrow{
  font-size:.78rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mark);margin:0 0 .9rem;
}


/* header ---------------------------------------------------------------- */
.hdr{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb,var(--bg) 72%,transparent);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.hdr.stuck{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none}
.brand-mark{width:36px;height:36px;transition:transform var(--t-slow) var(--ease)}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.06)}
.brand-name{font-family:var(--font-display);font-weight:600;font-size:1.18rem;color:var(--ink);letter-spacing:-.02em}

.nav{display:flex;align-items:center;gap:.35rem}
.nav>a:not(.btn){
  color:var(--body);text-decoration:none;font-size:.95rem;font-weight:500;
  padding:.6rem .8rem;border-radius:var(--r-sm);position:relative;
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.nav>a:not(.btn)::after{
  content:"";position:absolute;left:.8rem;right:.8rem;bottom:.42rem;height:2px;
  background:var(--cobalt);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.nav>a:not(.btn):hover{color:var(--ink)}
.nav>a:not(.btn):hover::after{transform:scaleX(1)}
.nav .btn{margin-left:.5rem}

.burger{
  display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;
  padding:10px;border-radius:var(--r-sm);
}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t) var(--ease),opacity var(--t) var(--ease)}
.burger span+span{margin-top:5px}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* buttons --------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:44px;padding:.75rem 1.4rem;border-radius:var(--r-pill);
  font-family:var(--font-body);font-weight:500;font-size:.98rem;
  text-decoration:none;cursor:pointer;border:1.5px solid transparent;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),
             background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn-lg{min-height:52px;padding:.95rem 1.8rem;font-size:1.03rem}
.btn-sm{min-height:40px;padding:.55rem 1.1rem;font-size:.92rem}
.btn .arr{transition:transform var(--t) var(--ease)}
.btn:hover .arr{transform:translateX(4px)}

.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--sh-accent)}
.btn-primary:hover{background:var(--accent-hi);transform:translateY(-2px);box-shadow:0 14px 34px rgba(2,6,23,.42)}

.btn-primary:active{transform:translateY(0)}

.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(63,201,255,.08);transform:translateY(-2px)}

.btn-outline{background:transparent;color:var(--on-dark);border-color:rgba(246,241,232,.35)}
.btn-outline:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(63,201,255,.08);transform:translateY(-2px)}

/* hero ------------------------------------------------------------------ */
/* Full-viewport hero. 100svh (small viewport height) so mobile browser
   chrome collapsing doesn't make it jump; the header is sticky and takes
   72px of flow, so subtract it to land on exactly one screen. */
.hero{
  position:relative;overflow:hidden;
  min-height:calc(100svh - 72px);
  display:flex;align-items:center;
  padding:clamp(3rem,7vw,5rem) 0;
}
.hero-glow{
  position:absolute;inset:-30% -10% auto -10%;height:140%;pointer-events:none;z-index:0;
  background:
    radial-gradient(44% 48% at 76% 18%,rgba(63,201,255,.16),transparent 70%),
    radial-gradient(40% 44% at 10% 8%,rgba(26,79,232,.26),transparent 70%);
  animation:drift 22s ease-in-out infinite alternate;
}
@keyframes drift{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(-2.5%,2%,0) scale(1.06)}}
.hero-in{position:relative;z-index:1;max-width:62rem}
.hero h1{margin-bottom:1.1rem}
.grad{
  /* Holds solid cobalt across most of the line, then turns warm late so the
     single-accent system: the line deepens within the cobalt family instead
     of shifting hue. --cobalt-deep is 11.04:1 on sand. */
  background:linear-gradient(100deg,#FFFFFF 0%,#DDE8FF 54%,var(--cyan) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{font-size:clamp(1.02rem,1.5vw,1.14rem);line-height:1.6;max-width:var(--measure);color:var(--body)}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:.9rem 1.6rem;margin-top:2rem}
.cta-row-center{justify-content:center}

.stats{display:flex;flex-wrap:wrap;gap:clamp(1.5rem,5vw,3.5rem);margin:3.5rem 0 0;padding-top:2rem;border-top:1px solid var(--line)}
.stats div{min-width:9rem}
.stats dt{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--body);opacity:.75;margin-bottom:.35rem}
.stats dd{margin:0;font-family:var(--font-display);font-weight:600;font-size:1.1rem;color:var(--ink);letter-spacing:-.01em}

/* sections -------------------------------------------------------------- */
.band{padding:var(--sec-y) 0}

.sec-head{max-width:var(--measure);margin-bottom:clamp(3rem,6vw,4.5rem)}
.sec-sub{font-size:1rem;color:var(--body);max-width:var(--measure)}
.sec-head-dark h2{color:var(--on-dark)}
.sec-head-dark .sec-sub{color:var(--on-dark-muted)}

.grid-4{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr))}
.grid-3{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,18rem),1fr))}

.card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r);
  padding:1.6rem 1.4rem;box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(63,201,255,.42);background:var(--surface-2)}
.card p{margin:0;font-size:.98rem}
.ico{
  display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;
  border-radius:13px;background:linear-gradient(140deg,rgba(63,201,255,.16),rgba(26,79,232,.22));
  color:var(--cyan);margin-bottom:1.1rem;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease);
}
.ico svg{width:23px;height:23px}
.card:hover .ico{transform:scale(1.08) rotate(-4deg);background:linear-gradient(140deg,rgba(26,79,232,.2),rgba(63,201,255,.22))}

/* dark band ------------------------------------------------------------- */
.band-dark{
  background:
    radial-gradient(62% 72% at 85% 6%,rgba(26,79,232,.42),transparent 62%),
    radial-gradient(46% 56% at 6% 94%,rgba(63,201,255,.20),transparent 65%),
    var(--navy);
  position:relative;
  /* The one dark surface on an otherwise white page. It swaps the surface
     tokens rather than restating component rules. `color` is set explicitly
     because descendants inherit the computed colour from <body>, not the
     var() reference — redefining --body alone would leave every paragraph
     painted in the light-theme value. */
  color:#B9C3DD;
  --ink:#F6F1E8;
  --body:#B9C3DD;
  --surface:rgba(255,255,255,.055);
  --surface-2:rgba(255,255,255,.09);
  --line:rgba(246,241,232,.15);
  --line-soft:rgba(246,241,232,.11);
  --rule:rgba(246,241,232,.09);
  --mark:#FF7A5C;             /* 4.88:1 on this gradient */
  --accent:#F6F1E8;           /* sand pill — red and cobalt both fail here */
  --accent-hi:#FFFFFF;
  --accent-ink:#07123F;
}
.band-dark .ico{background:linear-gradient(140deg,rgba(63,201,255,.16),rgba(26,79,232,.26));color:var(--cyan)}
.band-dark .card:hover,.band-dark .mod:hover{border-color:rgba(63,201,255,.42)}
.band-dark .ticks li::before{border-color:var(--cyan)}
.band-dark a:not(.btn):not(.link-quiet){color:var(--cyan)}
.prod{
  background:rgba(255,255,255,.055);border:1px solid rgba(246,241,232,.14);
  border-radius:var(--r-lg);padding:1.9rem 1.6rem;backdrop-filter:blur(6px);
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.prod:hover{transform:translateY(-5px);background:rgba(255,255,255,.085);border-color:rgba(63,201,255,.45)}
.prod h3{color:var(--on-dark);font-size:1.45rem;margin-bottom:.7rem}
.prod p{color:var(--on-dark-muted);font-size:.98rem}
.prod-tag{
  display:inline-block;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);background:rgba(63,201,255,.12);border:1px solid rgba(63,201,255,.3);
  padding:.3rem .7rem;border-radius:var(--r-pill);margin:0 0 1rem;
}
.note{margin:2.5rem 0 0;color:var(--on-dark-muted)}
.note a{color:var(--cyan);font-weight:500}

.ticks{display:grid;gap:.55rem;margin-top:1.2rem}
.ticks li{position:relative;padding-left:1.6rem;font-size:.94rem}
.ticks li::before{
  content:"";position:absolute;left:0;top:.52em;width:.62rem;height:.34rem;
  border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:rotate(-45deg);
}
.ticks-lg li{font-size:1rem;padding-left:1.8rem;margin-bottom:.2rem}
.ticks-lg li::before{border-color:var(--mark);  width:.7rem;height:.38rem}

/* steps ----------------------------------------------------------------- */
.steps{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));counter-reset:s}
.steps li{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r);
  padding:1.7rem 1.4rem;position:relative;overflow:hidden;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.steps li::after{
  content:"";position:absolute;left:0;top:0;width:3px;height:100%;
  background:linear-gradient(180deg,var(--cobalt),var(--cyan));
  transform:scaleY(0);transform-origin:top;transition:transform var(--t-slow) var(--ease);
}
.steps li:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.steps li:hover::after{transform:scaleY(1)}
.num{
  display:block;font-family:var(--font-display);font-weight:400;font-size:2.3rem;
  line-height:1;color:var(--mark);margin-bottom:.9rem;
}
.steps p{margin:0;font-size:.96rem}

/* trust ----------------------------------------------------------------- */

.trust-in{display:grid;gap:clamp(2rem,5vw,4rem);grid-template-columns:repeat(auto-fit,minmax(min(100%,21rem),1fr));align-items:center}
.trust-in .btn{margin-top:1.8rem}
.trust-card{
  margin:0;background:linear-gradient(145deg,var(--navy),var(--navy-2));
  border-radius:var(--r-lg);padding:clamp(2rem,5vw,3rem);box-shadow:var(--sh-3);
  position:relative;overflow:hidden;
}
.trust-card::before{
  content:"";position:absolute;right:-18%;top:-28%;width:68%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(63,201,255,.26),transparent 68%);
}
.trust-card blockquote{
  margin:0 0 1rem;font-family:var(--font-display);font-weight:600;
  font-size:clamp(1.5rem,3.2vw,2.1rem);line-height:1.22;color:var(--on-dark);
  letter-spacing:-.02em;position:relative;
}
.trust-card figcaption{color:var(--on-dark-muted);font-size:.95rem;position:relative}

/* cta band -------------------------------------------------------------- */
.cta-band{background:var(--bg-alt);padding:var(--sec-y) 0;text-align:center}
.cta-in{max-width:46rem}
.cta-band h2{color:var(--ink);margin-bottom:.8rem}
.cta-band>.wrap>p{color:var(--body);font-size:1.08rem}
.cta-foot{margin-top:2rem;font-size:.92rem;color:var(--body);opacity:.85}

/* alternating tint, so a white page still has rhythm */
.band-alt{background:var(--bg-alt)}

/* footer ---------------------------------------------------------------- */
/* Graphite, so the page ends on something solid rather than fading out.
   15.17:1 against the white above it. */
.ftr{
  background:var(--bg-foot);color:#B6BCC8;   /* 7.96:1 */
  padding:clamp(3rem,6vw,4.5rem) 0 2.4rem;border-top:0;
  --rule:rgba(255,255,255,.07);
}
.ftr-in{display:grid;gap:1.8rem}
.ftr-brand{display:flex;align-items:center;gap:.8rem}
.ftr-name{font-family:var(--font-display);font-weight:600;color:#FFFFFF;margin:0;font-size:1.05rem}
.ftr-tag{margin:0;font-size:.9rem;opacity:.8}
.ftr-nav{display:flex;flex-wrap:wrap;gap:.4rem 1.4rem}
.ftr-nav a{color:#B6BCC8;text-decoration:none;font-size:.94rem;transition:color var(--t) var(--ease)}
.ftr-nav a:hover{color:#FFFFFF}
.ftr-social a{border-color:rgba(255,255,255,.22);color:#B6BCC8}
.ftr-social a:hover{border-color:#FFFFFF;color:#FFFFFF;background:rgba(255,255,255,.07)}
.ftr-credits{color:#B6BCC8;border-top-color:rgba(255,255,255,.12)}
.ftr-credits a:hover{color:#FFFFFF}
.ftr :focus-visible{outline-color:#FFFFFF}
.ftr-legal{
  display:flex;flex-wrap:wrap;gap:.4rem 1.5rem;justify-content:space-between;
  margin:0;padding-top:1.5rem;border-top:1px solid rgba(255,255,255,.12);
  font-size:.86rem;opacity:.85;
}

/* reveal animation ------------------------------------------------------ */
/* Progressive enhancement: content is visible by default. JS adds .js-reveal
   to <html>, which hides it ahead of the IntersectionObserver reveal.
   No-JS and crawlers always see the content. */
.js-reveal .reveal{opacity:0;transform:translateY(14px)}
.js-reveal .reveal.in{
  opacity:1;transform:none;
  transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease);
  transition-delay:calc(var(--d,0) * 70ms);
}

/* responsive ------------------------------------------------------------ */
@media (max-width:860px){
  .burger{display:block}
  .nav{
    position:fixed;inset:72px 0 auto;flex-direction:column;align-items:stretch;gap:.2rem;
    background:var(--bg);border-bottom:1px solid var(--line);
    padding:1rem var(--gut) 1.6rem;box-shadow:var(--sh-2);
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:transform var(--t) var(--ease),opacity var(--t) var(--ease),visibility var(--t);
  }
  .nav.open{transform:none;opacity:1;visibility:visible}
  .nav>a:not(.btn){padding:.85rem .4rem;font-size:1.02rem;border-bottom:1px solid var(--line-soft)}
  .nav>a:not(.btn)::after{display:none}
  .nav .btn{margin:.9rem 0 0;width:100%}
  .cta-row .btn{width:100%}
  .stats{gap:1.4rem}
  .ftr-legal{flex-direction:column}
}
@media (max-width:420px){
  body{font-size:1rem}
  .hero{padding-top:2.5rem}
}

/* reduced motion -------------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;animation-iteration-count:1 !important;
    transition-duration:.01ms !important;scroll-behavior:auto !important;
  }
  .js-reveal .reveal{opacity:1;transform:none}
  .hero-glow{animation:none}
}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* FAQ -------------------------------------------------------------------
   <details>/<summary> so it works with no JavaScript and is keyboard
   operable and screen-reader announced for free. */

.faq-list{display:grid;gap:.7rem;max-width:52rem}
.faq{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r);
  overflow:hidden;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.faq:hover{border-color:rgba(26,79,232,.28);box-shadow:var(--sh-1)}
.faq[open]{border-color:rgba(26,79,232,.34);box-shadow:var(--sh-2)}
.faq summary{
  display:flex;align-items:center;gap:1rem;justify-content:space-between;
  padding:1.15rem 1.35rem;cursor:pointer;list-style:none;min-height:44px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary h3{margin:0;font-size:1.05rem;font-weight:600;color:var(--ink)}
.faq summary::after{
  content:"";flex:0 0 auto;width:.6rem;height:.6rem;margin-right:.25rem;
  border-right:2px solid var(--cobalt);border-bottom:2px solid var(--cobalt);
  transform:rotate(45deg) translate(-2px,-2px);
  transition:transform var(--t) var(--ease);
}
.faq[open] summary::after{transform:rotate(-135deg) translate(-2px,-2px)}
.faq summary:hover h3{color:var(--cobalt)}
.faq-a{padding:0 1.35rem 1.3rem;max-width:46rem}
.faq-a p{margin:0;font-size:.99rem}

/* photos + credits ------------------------------------------------------ */
figure{margin:0}
.credit{
  margin:.6rem 0 0;font-size:.76rem;color:var(--body);opacity:.72;line-height:1.45;
}
.credit a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.credit a:hover{color:var(--cobalt);opacity:1}

.band-dark .credit a:hover{color:var(--cyan)}
.shot{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);
  background:var(--line-soft);
}
.shot img{width:100%;height:auto;display:block;object-fit:cover}

/* hero (single column) */
.hero-in{max-width:62rem;width:100%}
.hero-copy{min-width:0}

/* context section */

.ctx-in{display:grid;gap:clamp(2rem,5vw,3.5rem);grid-template-columns:repeat(auto-fit,minmax(min(100%,21rem),1fr));align-items:center}
.ctx-in h2{margin-bottom:.7rem}
.ctx-fig img{width:100%;height:auto;border-radius:var(--r-lg);box-shadow:var(--sh-3);aspect-ratio:16/9;object-fit:cover}

/* SmartCare */
.sc-lead{display:grid;gap:clamp(2rem,5vw,3.5rem);grid-template-columns:repeat(auto-fit,minmax(min(100%,21rem),1fr));align-items:center;margin-bottom:clamp(3rem,6vw,4.5rem)}
.sc-lead p{color:var(--on-dark-muted)}
.sc-big{
  font-family:var(--font-display);font-weight:600;letter-spacing:-.02em;
  font-size:clamp(1.3rem,2.6vw,1.75rem);line-height:1.25;color:var(--on-dark);margin-bottom:1rem;
}
.sc-fig img{width:100%;height:auto;border-radius:var(--r-lg);box-shadow:var(--sh-3);aspect-ratio:4/3;object-fit:cover}
.mod-head{color:var(--on-dark);font-size:1.1rem;margin:0 0 1.2rem;letter-spacing:.01em}
.mods{display:grid;gap:.9rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr))}
.mod{
  background:rgba(255,255,255,.05);border:1px solid rgba(246,241,232,.13);
  border-radius:var(--r);padding:1.25rem 1.2rem;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.mod:hover{transform:translateY(-3px);background:rgba(255,255,255,.085);border-color:rgba(63,201,255,.4)}
.mod h4{
  margin:0 0 .4rem;font-family:var(--font-display);font-weight:600;font-size:1rem;
  color:var(--on-dark);letter-spacing:-.01em;
}
.mod p{margin:0;font-size:.92rem;color:var(--on-dark-muted)}

/* trust figure */
.trust-fig img{width:100%;height:auto;border-radius:var(--r-lg);box-shadow:var(--sh-3);aspect-ratio:4/3;object-fit:cover}

/* footer additions */
.ftr-social{display:flex;gap:.6rem;margin-top:.9rem}
.ftr-social a{
  display:inline-flex;align-items:center;gap:.45rem;min-height:44px;padding:.5rem .9rem;
  border:1px solid rgba(246,241,232,.22);border-radius:var(--r-pill);
  color:var(--on-dark-muted);text-decoration:none;font-size:.9rem;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),background var(--t) var(--ease);
}
.ftr-social a:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(63,201,255,.08)}
.ftr-social svg{width:17px;height:17px}
.ftr-credits{
  margin:0;padding-top:1.3rem;border-top:1px solid rgba(246,241,232,.1);
  font-size:.8rem;color:var(--on-dark-muted);opacity:.65;line-height:1.6;
}
.ftr-credits a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.ftr-credits a:hover{color:var(--cyan);opacity:1}

/* diagrams -------------------------------------------------------------- */
.dgm{border-radius:var(--r-lg);padding:clamp(1rem,3vw,1.75rem);box-shadow:var(--sh-2)}
.dgm img{width:100%;height:auto;display:block}
.dgm-light{background:var(--surface);border:1px solid var(--line-soft)}
.dgm-dark{background:var(--surface);border:1px solid var(--line);box-shadow:none}

/* wide figures ---------------------------------------------------------- */
.wide-fig{margin-top:clamp(2rem,4vw,3rem)}
.wide-fig img{
  width:100%;height:auto;border-radius:var(--r-lg);box-shadow:var(--sh-3);
  aspect-ratio:21/9;object-fit:cover;
}
@media (max-width:640px){ .wide-fig img{aspect-ratio:16/10} }

/* full-bleed photo band ------------------------------------------------- */
.photo-band{position:relative;isolation:isolate}
.photo-band img{width:100%;height:clamp(16rem,36vw,24rem);object-fit:cover;display:block}
.photo-band::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,18,63,.12) 0%,rgba(7,18,63,.78) 100%);
}
.photo-band-cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:0 var(--gut) clamp(1.25rem,3vw,2rem);
}
.photo-band-text{
  margin:0 0 .25rem;font-family:var(--font-display);font-weight:600;
  font-size:clamp(1.05rem,2.4vw,1.5rem);color:#fff;letter-spacing:-.01em;
  text-shadow:0 1px 12px rgba(7,18,63,.5);
}
.photo-band .credit{color:#DCE4F7;opacity:.85;margin:0}
.photo-band .credit a:hover{color:var(--cyan)}

/* full-width product diagram */
.sc-lead{grid-template-columns:1fr}
.sc-diagram{max-width:56rem;margin:0 auto clamp(2.5rem,5vw,3.5rem)}
.sc-diagram .credit{text-align:center}

/* architectural grid rules ----------------------------------------------
   Five hairlines on the container's 4-column grid, drawn behind content.
   Painted per-section rather than as one fixed overlay, because the dark
   bands are opaque and would cover a layer sitting behind them. */
.ruled{position:relative}
.ruled::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  width:100%;max-width:var(--wrap);margin-inline:auto;left:0;right:0;
  background-image:
    linear-gradient(var(--rule),var(--rule)),
    linear-gradient(var(--rule),var(--rule)),
    linear-gradient(var(--rule),var(--rule)),
    linear-gradient(var(--rule),var(--rule)),
    linear-gradient(var(--rule),var(--rule));
  background-size:1px 100%;
  background-position:0 0, 25% 0, 50% 0, 75% 0, 100% 0;
  background-repeat:no-repeat;
}
.ruled > .wrap{position:relative;z-index:1}
/* the rules read as light-on-dark inside the navy bands */

@media (max-width:760px){
  /* two columns only — five hairlines on a phone is noise */
  .ruled::before{background-position:0 0, 50% 0, 100% 0, -100px 0, -100px 0}
}

/* quiet secondary action ------------------------------------------------
   One strong button plus a plain underlined link, rather than two competing
   pills. Still a 44px target. */
.link-quiet{
  display:inline-flex;align-items:center;gap:.4rem;min-height:44px;
  color:var(--ink);font-size:1rem;font-weight:400;
  text-decoration:underline;text-decoration-color:rgba(246,241,232,.32);
  text-underline-offset:5px;text-decoration-thickness:1px;
  transition:color var(--t) var(--ease),text-decoration-color var(--t) var(--ease);
}
.link-quiet .arr{transition:transform var(--t) var(--ease)}
.link-quiet:hover{color:var(--cyan);text-decoration-color:var(--cyan)}
.link-quiet:hover .arr{transform:translateX(4px)}
.band-dark .link-quiet{color:var(--on-dark);text-decoration-color:rgba(246,241,232,.3)}
.band-dark .link-quiet:hover{color:var(--cyan);text-decoration-color:var(--cyan)}

/* flatter, more architectural cards — hairline over heavy shadow */
.card{box-shadow:none;border-color:var(--line-soft)}
.card:hover{box-shadow:var(--sh-2)}
.steps li{box-shadow:none;border-color:var(--line-soft)}

/* hero dot grid ---------------------------------------------------------
   A fine dot lattice that drifts by exactly one cell over ~34s and reverses,
   so it reads as a slow breath rather than a loop. Masked to fade out before
   it reaches the text. Killed entirely under prefers-reduced-motion by the
   global rule at the end of this file. */
.hero-dots{
  position:absolute;inset:-12% -12% -12% -12%;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(246,241,232,.20) 1px,transparent 1.4px);
  background-size:34px 34px;
  /* weighted to the open right-hand side so the texture lives in the negative
     space rather than behind the headline */
  -webkit-mask-image:radial-gradient(78% 82% at 72% 42%,#000 20%,transparent 80%);
  mask-image:radial-gradient(78% 82% at 72% 42%,#000 20%,transparent 80%);
  animation:dotDrift 34s ease-in-out infinite alternate;
  will-change:transform;
}
@keyframes dotDrift{
  from{transform:translate3d(0,0,0)}
  to{transform:translate3d(-34px,20px,0)}
}
@media (prefers-reduced-motion:reduce){ .hero-dots{animation:none} }

/* light is the default surface now — see :root. Only .band-dark overrides it. */

/* light-surface component colours ---------------------------------------- */
.ico{background:linear-gradient(140deg,rgba(26,79,232,.10),rgba(63,201,255,.14));color:var(--cobalt)}
.card:hover{border-color:rgba(26,79,232,.32)}
.steps li::after{background:linear-gradient(180deg,var(--cobalt),var(--cobalt-lift))}
.ticks li::before{border-color:var(--cobalt)}
/* No blanket `a` rule here. :not() carries its argument's specificity, so
   `a:not(.btn):not(.link-quiet)` (0,2,1) outranks .ftr-nav a, .nav>a and
   .skip — which repainted the skip link cobalt-on-red (1.14:1) and the
   footer nav cobalt-on-graphite (2.4:1). The base `a` colour is set on the
   element selector instead, so every component rule wins naturally. */
.link-quiet{color:var(--ink);text-decoration-color:rgba(10,18,48,.3)}
.link-quiet:hover{color:var(--cobalt);text-decoration-color:var(--cobalt)}
.credit{color:var(--body)}
:focus-visible{outline-color:var(--cobalt)}
.skip{background:var(--accent);color:var(--accent-ink)}
.hdr{background:color-mix(in srgb,var(--bg) 82%,transparent)}
.burger span{background:var(--ink)}
.btn-ghost{color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--cobalt);color:var(--cobalt);background:rgba(26,79,232,.06)}

/* the hero sits on white: dots and glow invert */
.hero-dots{background-image:radial-gradient(rgba(10,18,48,.17) 1px,transparent 1.4px)}
.hero-glow{
  background:
    radial-gradient(44% 48% at 78% 16%,rgba(26,79,232,.10),transparent 70%),
    radial-gradient(38% 42% at 8% 6%,rgba(163,42,34,.06),transparent 70%);
}
/* background-image, NOT the `background` shorthand — the shorthand resets
   background-clip to border-box and the text clipping silently dies, which
   paints the headline as a solid bar. */
.grad{background-image:linear-gradient(100deg,var(--cobalt) 0%,var(--cobalt) 78%,var(--mark) 100%)}