/* ZeriZeri: black and white, colour as light. Logo artwork is never recoloured. */
:root{
  --black:#000000; --white:#FFFFFF;
  --ink:#1D1D1F; --paper:#F5F5F7; --panel:#0B0B0C; --panel-2:#1C1C1E; --hair:#2C2C2E;
  --grey-1:#424245; --grey-2:#6E6E73; --grey-3:#86868B; --grey-4:#A1A1A6; --grey-5:#D2D2D7; --rule:#E8E8ED;
  --link-dark:#2997FF; --link-light:#0066CC;
  --amber:#FF9F43; --ember:#FF453A; --magenta:#FF3D7F; --violet:#5E5CE6; --cyan:#2BD9FE; --green:#34C759;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Inter,Roboto,Arial,sans-serif;
  --wrap:1080px; --radius:28px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--black);color:var(--paper);font:400 17px/1.5 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:var(--link-dark);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible{outline:2px solid var(--link-dark);outline-offset:4px;border-radius:4px}
h1,h2,h3,p{margin:0}
h1,h2,h3{text-wrap:balance}
.wrap{max-width:var(--wrap);margin:0 auto}
.band{padding-block:clamp(80px,11vw,128px);padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(24px,env(safe-area-inset-right,0px));position:relative;overflow:hidden}
.band.light{background:var(--white);color:var(--ink)}
.band.grey{background:var(--paper);color:var(--ink)}
.band.light a,.band.grey a{color:var(--link-light)}
.eyebrow{font-size:17px;font-weight:600;color:var(--grey-3)}
.band.grey .eyebrow{color:var(--grey-2)}
.h2{font-size:clamp(40px,6vw,72px);font-weight:700;line-height:1.04;letter-spacing:-.04em}
.stack{display:flex;flex-direction:column;gap:14px}

/* Nav */
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:100;background:var(--white);color:var(--black);padding:8px 12px;border-radius:8px}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--black);z-index:60}
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(0,0,0,.78);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid #1D1D1F}
.nav .wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(24px,env(safe-area-inset-right,0px));max-width:calc(var(--wrap) + 48px)}
.nav .logo img{width:120px;height:54px;object-fit:contain}
.nav ul{display:flex;gap:28px;align-items:center;list-style:none;margin:0;padding:0}
.nav ul a{font-size:13px;color:var(--grey-5)}
.nav ul a:hover{color:var(--white);text-decoration:none}
.nav .pill{color:var(--black);background:var(--paper);padding:8px 16px;border-radius:980px}
.nav .pill:hover{color:var(--black);background:var(--white)}
@media (max-width:640px){.nav ul li.hide-sm{display:none}.nav .logo img{width:100px}}

/* Light: soft blurred orbs */
.light-field{position:absolute;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(44px);opacity:.85}
.orb.amber{background:radial-gradient(closest-side,var(--amber),rgba(255,159,67,0))}
.orb.ember{background:radial-gradient(closest-side,var(--ember),rgba(255,69,58,0))}
.orb.magenta{background:radial-gradient(closest-side,var(--magenta),rgba(255,61,127,0))}
.orb.violet{background:radial-gradient(closest-side,var(--violet),rgba(94,92,230,0))}
.orb.cyan{background:radial-gradient(closest-side,var(--cyan),rgba(43,217,254,0))}
@media (prefers-reduced-motion:no-preference){
  .hero .orb{animation:drift 18s ease-in-out infinite alternate}
  .hero .orb:nth-child(2){animation-duration:22s;animation-delay:-6s}
  .hero .orb:nth-child(3){animation-duration:26s;animation-delay:-11s}
  .hero .orb:nth-child(4){animation-duration:20s;animation-delay:-3s}
  @keyframes drift{0%{transform:translate(0,0) scale(1)}100%{transform:translate(4%,-6%) scale(1.08)}}
}

/* Hero */
.hero{text-align:center;padding-top:clamp(80px,10vw,112px);padding-bottom:96px}
.hero .light-field{left:50%;top:clamp(380px,46vw,440px);width:min(900px,100%);height:420px;transform:translateX(-50%)}
.hero .inner{position:relative;display:flex;flex-direction:column;align-items:center;gap:22px}
.hero h1{font-size:clamp(64px,11vw,136px);font-weight:700;line-height:.98;letter-spacing:-.045em}
.hero .lede{max-width:640px;font-size:clamp(21px,2.4vw,28px);font-weight:500;line-height:1.25;letter-spacing:-.015em;color:var(--grey-4)}
.ctas{display:flex;gap:28px;align-items:center;flex-wrap:wrap;justify-content:center;margin-top:10px}
.btn{display:inline-flex;align-items:center;min-height:44px;padding:12px 24px;border-radius:980px;background:var(--paper);color:var(--black);font-size:17px}
.btn:hover{background:var(--white);text-decoration:none}
.hero .symbol{width:520px;max-width:86%;height:auto;margin-top:72px}
.define{margin-top:64px;font-size:14px;color:var(--grey-3);letter-spacing:.02em}
.define b{color:var(--paper);font-weight:600}

/* Principles */
.principles{display:flex;flex-direction:column;gap:72px}
.principles .h2{max-width:820px}
.principles .h2 span{color:var(--grey-3)}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:48px}
.principle{display:flex;flex-direction:column;gap:14px;padding-top:22px;border-top:1px solid var(--grey-5)}
.principle i{display:block;width:32px;height:4px;border-radius:2px}
.principle h3{font-size:24px;font-weight:600;letter-spacing:-.02em}
.principle p{color:var(--grey-2)}

/* Work */
.work{display:flex;flex-direction:column;gap:56px}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,440px),1fr));gap:24px}
.tile{position:relative;overflow:hidden;background:var(--panel);border-radius:var(--radius);padding:48px 44px 56px;min-height:560px;display:flex;flex-direction:column;gap:16px;isolation:isolate}
.tile>*{position:relative}
.tile .orb{position:absolute;z-index:-1;filter:blur(32px);transition:transform .8s cubic-bezier(.2,.8,.2,1)}
@media (prefers-reduced-motion:no-preference){.tile:hover .orb{transform:scale(1.12)}}
.tile .domain{font-size:14px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.tile h3{font-size:48px;font-weight:700;letter-spacing:-.035em;line-height:1.05}
.tile .tag{font-size:28px;font-weight:600;letter-spacing:-.02em;line-height:1.15}
.tile .desc{color:var(--grey-4);max-width:420px}
.tile .more{margin-top:auto}
.tile.doughrise .domain{color:#FFB86B}
.tile.geogize .domain{color:#7FE6FF}
@media (max-width:520px){.tile .orb{transform:translateY(150px)}.tile{padding:36px 28px 44px;min-height:480px}.tile h3{font-size:40px}.tile .tag{font-size:24px}}

/* Engineering */
.eng{display:flex;flex-direction:column;gap:56px}
.eng .intro{max-width:760px}
.eng .intro p.sub{font-size:21px;line-height:1.4;color:var(--grey-2)}
.specs{background:var(--white);border-radius:var(--radius);padding:16px clamp(24px,4vw,40px);margin:0}
.spec{display:flex;flex-wrap:wrap;gap:8px 40px;padding:26px 0;border-bottom:1px solid var(--rule)}
.spec:last-child{border-bottom:0}
.spec dt{flex:1 1 200px;font-weight:600}
.spec dd{flex:999 1 420px;min-width:0;margin:0;color:var(--grey-1)}

/* Founder */
.founder{position:relative;display:flex;flex-wrap:wrap;gap:64px;align-items:flex-start}
.portrait{flex:1 1 340px;min-width:0;aspect-ratio:4/5;background:#111113;border:1px solid var(--hair);border-radius:var(--radius);overflow:hidden;display:grid;place-items:center;position:relative}
.portrait img.photo{width:100%;height:100%;object-fit:cover}
.portrait img.mark{width:56%;height:auto;position:relative}
.portrait .orb{position:absolute}
.bio{flex:999 1 460px;min-width:0;display:flex;flex-direction:column;gap:22px}
.bio .role{font-size:28px;font-weight:600;line-height:1.2;letter-spacing:-.02em}
.bio p.body{color:var(--grey-4);max-width:600px}
.open{margin-top:12px;background:var(--panel-2);border-radius:22px;padding:28px 30px;display:flex;flex-direction:column;gap:12px}
.open .k{font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--green)}
.open .v{font-size:21px;font-weight:600;letter-spacing:-.015em}
.open .s{font-size:15px;color:var(--grey-4)}

/* Contact */
.contact{text-align:center}
.contact .wrap{max-width:760px;display:flex;flex-direction:column;align-items:center;gap:22px}
.contact .mark{width:64px;height:38px;object-fit:contain}
.email{display:inline-flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:center}
.email span{font-size:28px;font-weight:500;letter-spacing:-.01em;user-select:all}
.copy{font:inherit;font-size:14px;border:1px solid var(--grey-5);background:var(--white);color:var(--ink);border-radius:980px;padding:8px 14px;min-height:36px;cursor:pointer}
.copy:hover{border-color:var(--ink)}
.copy:focus-visible{outline:2px solid var(--link-light);outline-offset:3px}

/* Footer */
footer{padding-block:56px 64px;padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(24px,env(safe-area-inset-right,0px))}
footer .wrap{display:flex;flex-wrap:wrap;gap:24px 40px;justify-content:space-between;align-items:flex-end}
footer .wordmark{width:180px;height:auto}
footer .legal{display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--grey-3)}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}