/* Welcome page. One family, one weight for text, grey continuations instead of extra headings. */
:root{
  --ink:rgba(17,17,17,.93);--muted:rgba(17,17,17,.5);--faint:rgba(17,17,17,.28);
  --surface:#f4f4f2;--surface-hover:#ececea;--line:rgba(17,17,17,.08);--dark:#111;
  --width:960px;--gutter:32px;--radius:28px;
  font-family:"SF Pro Display",-apple-system,BlinkMacSystemFont,Inter,system-ui,sans-serif;
  font-weight:500;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased;font-synthesis:none;color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:#fff}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
img{display:block;max-width:100%;height:auto}
h1,h2,p,figure{margin:0}
::selection{background:#111;color:#fff}
:focus-visible{outline:2px solid var(--dark);outline-offset:3px;border-radius:8px}
.skip{position:fixed;left:16px;top:-60px;padding:12px 16px;background:var(--dark);color:#fff;border-radius:12px;z-index:20}
.skip:focus{top:16px}

.page{max-width:calc(var(--width) + var(--gutter)*2);margin:0 auto;padding:0 var(--gutter)}

/* Header: a floating pill, like a toolbar that stays out of the way. */
.header{position:sticky;top:0;z-index:10;padding:16px var(--gutter) 0;max-width:1184px;margin:0 auto}
.header-bar{display:flex;align-items:center;gap:24px;padding:8px 8px 8px 18px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:saturate(1.6) blur(16px);backdrop-filter:saturate(1.6) blur(16px)}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:600;letter-spacing:-.3px}
.brand img{border-radius:6px}
.header nav{flex:1;display:flex;justify-content:center;gap:28px;font-size:15px}
.header nav a:hover{color:var(--muted)}

.pill{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;font-size:17px;letter-spacing:-.2px;transition:background-color .2s,transform .2s}
.pill-dark{background:var(--dark);color:#fff}
.pill-dark:hover{background:#333}
.pill-soft{background:var(--surface)}
.pill-soft:hover{background:var(--surface-hover)}
.pill-small{min-height:38px;padding:0 16px;font-size:15px}
.pill:active{transform:scale(.98)}
.text-link{font-size:16px;color:var(--muted)}
.text-link:hover{color:var(--ink)}

/* Headlines: the first sentence carries the point, the rest is grey. */
h1,h2{font-weight:500;color:var(--ink)}
h1 span,h2 span{color:var(--faint)}
h1{font-size:clamp(36px,5.8vw,56px);line-height:1.07;letter-spacing:-.03em;max-width:980px}
h2{font-size:clamp(28px,3.9vw,37px);line-height:1.12;letter-spacing:-.025em;max-width:860px;margin-bottom:40px}
strong{font-weight:500;color:var(--ink)}

.hero{padding:72px 0 24px}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 14px;margin:36px 0 56px}
.actions .text-link{margin-left:10px}

.panel{background:var(--surface);border-radius:var(--radius);overflow:hidden}
.showcase{padding:40px}
.showcase video{display:block;width:100%;height:auto;aspect-ratio:16/10;border-radius:14px;background:#18181a;box-shadow:0 30px 60px -30px rgba(0,0,0,.45)}
.showcase-spaced{margin-top:40px}
.caption{margin-top:18px;font-size:16px;line-height:1.45;color:var(--muted);max-width:720px}
.caption a{color:var(--ink);border-bottom:1px solid var(--line)}
.caption a:hover{border-color:var(--ink)}

/* Before/after: the range input sits on top of the whole image so the photo itself is the handle. */
.compare{position:relative;border-radius:var(--radius);overflow:hidden;background:#000;--split:50%}
.compare img{display:block;width:100%}
.compare-before{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--split)) 0 0)}
.compare-before img{height:100%;object-fit:cover}
.compare::after{content:"";position:absolute;top:0;bottom:0;left:var(--split);width:2px;margin-left:-1px;background:#fff;box-shadow:0 0 12px rgba(0,0,0,.4);pointer-events:none}
.compare-label{position:absolute;top:16px;padding:6px 12px;border-radius:999px;background:rgba(17,17,17,.55);color:#fff;font-size:13px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:none}
.compare-label-before{left:16px}
.compare-label-after{right:16px}
.compare-range{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize}
.compare:has(.compare-range:focus-visible){outline:2px solid var(--dark);outline-offset:3px}

.motion-pair .study video{aspect-ratio:1;background:var(--surface)}
.motion-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}

.section{padding:88px 0 40px}
.cards{display:grid;gap:16px}
.cards-3{grid-template-columns:repeat(3,1fr)}
.cards-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface);border-radius:var(--radius);padding:28px 28px 32px}
.card p{font-size:18px;line-height:1.42;letter-spacing:-.2px;color:var(--muted)}
.note{margin-top:28px;font-size:17px;line-height:1.5;color:var(--muted);max-width:760px}

/* Studies: shown at full width with plain catalogue captions. */
.study img{width:100%;border-radius:var(--radius)}
.study figcaption{display:flex;justify-content:space-between;align-items:baseline;gap:24px;padding:16px 4px 0;font-size:16px;line-height:1.45;color:var(--muted)}
.study figcaption a{flex-shrink:0;font-size:14px;color:var(--ink);border-bottom:1px solid var(--line)}
.study figcaption a:hover{border-color:var(--ink)}
.study-wide{margin-bottom:40px}
.study-gouache{margin-top:72px}
/* Columns follow the images' aspect ratios (1:1 and 3:2) so both share one height uncropped. */
.study-pair{display:grid;grid-template-columns:1fr 1.5fr;gap:16px;align-items:start;margin-bottom:8px}

.lab{display:grid;grid-template-columns:1.1fr 1fr}
.lab-image{background:#0e0e0e}
.lab-image{display:flex}
.lab-image video{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:cover}
.study video{display:block;width:100%;height:auto;border-radius:var(--radius)}
.lab-info{display:flex;flex-direction:column;justify-content:space-between;gap:32px;padding:36px}
.lab-info p{font-size:20px;line-height:1.4;letter-spacing:-.2px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips button{border:0;background:#fff;border-radius:999px;padding:10px 16px;font-size:15px;color:var(--muted);transition:background-color .2s,color .2s}
.chips button:hover{color:var(--ink)}
.chips button[aria-pressed=true]{background:var(--dark);color:#fff}

.faq h2{margin-bottom:24px}
.faq-list{max-width:none}
details p{max-width:760px}
details{border-bottom:1px solid var(--line)}
summary{list-style:none;display:flex;justify-content:space-between;gap:24px;padding:22px 0;font-size:19px;letter-spacing:-.2px;cursor:pointer}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--faint);font-size:22px;line-height:1;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{font-size:17px;line-height:1.55;color:var(--muted);padding:0 40px 24px 0}
details a{text-decoration:underline;text-underline-offset:3px}

.closing{padding:120px 0 104px;display:flex;flex-direction:column;align-items:center;gap:28px;text-align:center}
.closing h2{margin:0;font-size:clamp(36px,5.8vw,56px);letter-spacing:-.03em}

.footer{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:28px;padding-bottom:40px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.footer > *{margin:0}
.footer p a{color:var(--ink)}
.footer nav{display:flex;gap:24px}
.footer a:hover{color:var(--ink)}

@media (max-width:820px){
  .header nav{display:none}
  .header-bar{justify-content:space-between}
  .cards-3{grid-template-columns:1fr}
  .lab{grid-template-columns:1fr}
  .showcase{padding:20px}
}
@media (max-width:600px){
  :root{--gutter:16px;--radius:22px}
  .header{padding-top:10px}
  .hero{padding-top:48px}
  .actions{margin:28px 0 36px}
  .actions .text-link{margin-left:4px;width:100%}
  .pill{font-size:16px;min-height:46px;padding:0 20px}
  .pill-small{min-height:36px;padding:0 14px;font-size:14px}
  .showcase{padding:12px;border-radius:18px}
  .showcase img{border-radius:8px}
  .caption{font-size:15px}
  .section{padding:64px 0 24px}
  h2{margin-bottom:28px}
  .cards-2,.study-pair,.motion-pair{grid-template-columns:1fr}
  .card{padding:22px 22px 26px}
  .card p{font-size:17px}
  .study figcaption{font-size:15px}
  .lab-info{padding:24px}
  .lab-info p{font-size:18px}
  summary{font-size:17px}
  details p{font-size:16px;padding-right:8px}
  .closing{padding:88px 0 80px}
  .footer{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}