/* Co-Synthesist — studio design system, October 2026
   Idea: convergence. A person and a tool meet at one point (the copper point in the mark).
   Copper is used only for that point: where something is now. Verdigris carries the brand. */

:root{
  --stone:#F1F3EF;      /* page ground: cool mineral paper */
  --stone-2:#E4E9E4;    /* quiet panels */
  --ink:#1C2521;        /* green-black text */
  --muted:#56625C;
  --rule:#C9D2CC;
  --verdigris:#3F6E5E;  /* brand */
  --verdigris-deep:#24443A;
  --copper:#B4642A;     /* the point: current stage only */
  --on-deep:#E9EFEA;

  --display:"Bricolage Grotesque",system-ui,sans-serif;
  --text:"Literata",Georgia,serif;

  --measure:36rem;
  --wrap:74rem;
  --gutter:clamp(16px,4vw,40px);
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--stone);color:var(--ink);font-family:var(--text);font-size:1.0625rem;line-height:1.65;font-optical-sizing:auto}
img{max-width:100%;height:auto;display:block}
a{color:var(--verdigris);text-decoration-thickness:1px;text-underline-offset:.2em}
a:hover{color:var(--verdigris-deep)}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--stone);padding:.6rem 1rem;z-index:10}
.skip:focus{left:var(--gutter)}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}

/* ---------- Type ---------- */
h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.015em;line-height:1.05;margin:0;text-wrap:balance;font-variation-settings:"wdth" 88}
h1{font-size:clamp(2.6rem,7.2vw,5.6rem);letter-spacing:-.03em;font-variation-settings:"wdth" 78}
h2{font-size:clamp(1.85rem,3.6vw,2.75rem)}
h3{font-size:1.4rem;letter-spacing:-.005em;line-height:1.2;font-variation-settings:"wdth" 92}
p{margin:0 0 1em}
.lede{font-size:clamp(1.15rem,1.7vw,1.32rem);line-height:1.55;max-width:34rem}
.prose{max-width:var(--measure)}
.prose p:last-child{margin-bottom:0}
.small{font-size:.92rem;color:var(--muted)}
.kicker{font-family:var(--display);font-weight:500;font-size:1rem;color:var(--verdigris);margin:0 0 .9rem;letter-spacing:0;font-variation-settings:"wdth" 95}

/* ---------- Header ---------- */
.site-head{border-bottom:1px solid var(--rule);background:var(--stone)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4.5rem}
.brand{display:inline-flex;align-items:center;gap:.65rem;color:var(--ink);text-decoration:none;font-family:var(--display);font-weight:600;font-size:1.2rem;letter-spacing:-.01em}
.brand svg{width:34px;height:34px;flex:none}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:.25rem 1.75rem;align-items:center}
.nav a{font-family:var(--display);font-weight:500;font-size:1rem;color:var(--ink);text-decoration:none;padding:.4rem 0;display:inline-block;font-variation-settings:"wdth" 95}
.nav a:hover{color:var(--verdigris)}
.nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--copper)}
.nav-mob{display:none}
@media (max-width:820px){
  .site-head{position:relative}
  .site-head .wrap{flex-wrap:wrap;min-height:4rem}
  .nav{width:100%;order:3}
  .nav-desk{display:none !important}
  .nav-mob{display:block;width:100%}
  .nav-mob summary{list-style:none}
  .menu-btn{display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;font-family:var(--display);font-weight:500;font-size:1rem;padding:.45rem .9rem;border:1px solid var(--rule);border-radius:999px;position:absolute;right:var(--gutter);top:.8rem;background:var(--stone)}
  .menu-btn::-webkit-details-marker{display:none}
  .menu-btn .bars{width:16px;height:10px;border-block:2px solid var(--ink);position:relative}
  .menu-btn .bars::after{content:"";position:absolute;left:0;right:0;top:2px;border-top:2px solid var(--ink)}
  .nav-mob[open] ul{display:flex;flex-direction:column;align-items:flex-start;gap:0;padding:.25rem 0 1rem}
  .nav-mob[open] ul a{font-size:1.25rem;padding:.55rem 0}
}

/* ---------- Buttons ---------- */
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}
.btn{display:inline-flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:600;font-size:1rem;text-decoration:none;padding:.8rem 1.35rem;border-radius:999px;border:1.5px solid var(--ink);color:var(--ink);background:transparent;line-height:1.1;font-variation-settings:"wdth" 95}
.btn:hover{background:var(--ink);color:var(--stone)}
.btn.solid{background:var(--verdigris);border-color:var(--verdigris);color:#fff}
.btn.solid:hover{background:var(--verdigris-deep);border-color:var(--verdigris-deep)}
.deep .btn{border-color:var(--on-deep);color:var(--on-deep)}
.deep .btn:hover{background:var(--on-deep);color:var(--verdigris-deep)}
.deep .btn.solid{background:var(--on-deep);color:var(--verdigris-deep);border-color:var(--on-deep)}

/* ---------- Sections ---------- */
.band{padding-block:clamp(3.5rem,8vw,6.5rem)}
.band + .band{border-top:1px solid var(--rule)}
.band.deep{background:var(--verdigris-deep);color:var(--on-deep);border-top:0}
.band.deep + .band{border-top:0}
.band.deep h2,.band.deep h3{color:#fff}
.band.deep a:not(.btn){color:#fff}
.band.deep .small{color:#B9C9C0}
.band.panel{background:var(--stone-2);border-top:0}
.band.panel + .band{border-top:0}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr);gap:1rem;margin-bottom:2.5rem;max-width:44rem}

/* ---------- Hero ---------- */
.hero{padding-block:clamp(2.5rem,6vw,5rem) clamp(3rem,7vw,5.5rem)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(2rem,5vw,4.5rem);align-items:center}
.hero h1{margin-bottom:1.5rem}
.hero figure{margin:0}
.hero figure img{width:100%;aspect-ratio:1/1;object-fit:cover}
.hero figcaption{font-size:.88rem;color:var(--muted);margin-top:.75rem;max-width:30rem}
@media (max-width:820px){ .hero .wrap{grid-template-columns:minmax(0,1fr)} .hero figure{max-width:26rem} }

/* ---------- Stage track (the signature element) ---------- */
.stages{--cols:4;margin-top:.5rem}
.stage-head,.stage-row{display:grid;grid-template-columns:10rem minmax(0,1fr) 15rem;gap:1.5rem;align-items:center}
.stage-head{padding-bottom:.75rem;border-bottom:1px solid var(--rule)}
.stage-head ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(var(--cols),1fr)}
.stage-head li{font-family:var(--display);font-weight:500;font-size:.95rem;color:var(--muted);font-variation-settings:"wdth" 92}
.stage-row{padding-block:1.35rem;border-bottom:1px solid var(--rule);text-decoration:none;color:inherit}
a.stage-row:hover .name{color:var(--verdigris)}
.stage-row .name{font-family:var(--display);font-weight:600;font-size:1.35rem;letter-spacing:-.01em;font-variation-settings:"wdth" 90}
.track{--cols:4;position:relative;height:22px;display:grid;grid-template-columns:repeat(var(--cols),1fr)}
.track::before{content:"";position:absolute;left:0;right:0;top:50%;border-top:1px dashed var(--rule)}
.track .done{position:absolute;left:0;top:50%;height:3px;margin-top:-1px;background:var(--verdigris);width:calc(var(--at) * 100% / var(--cols) - 100% / var(--cols) / 2)}
.track .tick{position:relative;width:9px;height:9px;border-radius:50%;background:var(--stone);border:1.5px solid var(--rule);justify-self:center;align-self:center}
.track .tick.on{border-color:var(--verdigris);background:var(--verdigris)}
.track .tick.now{width:18px;height:18px;border:0;background:var(--copper);box-shadow:0 0 0 5px rgba(180,100,42,.16)}
.stage-row .status{font-size:.95rem;color:var(--muted);line-height:1.4}
.stage-row .status strong{display:block;color:var(--ink);font-family:var(--display);font-weight:600;font-size:1rem;font-variation-settings:"wdth" 92}
.stage-note{margin-top:1.25rem;max-width:40rem}
@media (max-width:820px){
  .stage-head{display:none}
  .stage-row{grid-template-columns:minmax(0,1fr);gap:.6rem}
  .track{height:20px}
  .track-labels{display:grid;grid-template-columns:repeat(var(--cols),1fr);font-family:var(--display);font-size:.8rem;color:var(--muted);text-align:center;margin-top:-.2rem;font-variation-settings:"wdth" 85}
}
@media (min-width:821px){ .track-labels{display:none} }

/* ---------- Feature (Unladen) ---------- */
.feature{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(2rem,5vw,5rem);align-items:center}
.feature .phone{justify-self:center;width:min(100%,17rem);border-radius:28px;overflow:hidden;box-shadow:0 0 0 8px #10201A,0 24px 60px rgba(0,0,0,.35)}
.facts{list-style:none;margin:2rem 0 0;padding:0;display:grid;gap:0}
.facts li{padding:.85rem 0;border-top:1px solid rgba(233,239,234,.22);display:grid;grid-template-columns:9rem minmax(0,1fr);gap:1rem}
.facts li span:first-child{font-family:var(--display);font-weight:600;color:#fff;font-variation-settings:"wdth" 92}
@media (max-width:820px){ .feature{grid-template-columns:minmax(0,1fr)} .facts li{grid-template-columns:minmax(0,1fr);gap:.15rem} }

/* ---------- Principles ---------- */
.principles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.5rem,4vw,3.5rem)}
.principles > div{border-top:3px solid var(--verdigris);padding-top:1.25rem}
.principles h3{margin-bottom:.75rem}
@media (max-width:820px){ .principles{grid-template-columns:minmax(0,1fr)} }

/* ---------- Founder ---------- */
.founder{display:grid;grid-template-columns:14rem minmax(0,1fr);gap:clamp(1.5rem,4vw,3.5rem);align-items:start}
.founder img{width:100%;aspect-ratio:3/4;object-fit:cover}
@media (max-width:620px){ .founder{grid-template-columns:minmax(0,1fr)} .founder img{max-width:11rem} }

/* ---------- Next list ---------- */
.next-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 3rem}
.next-list li{padding:1.1rem 0;border-top:1px solid var(--rule)}
.next-list strong{font-family:var(--display);font-weight:600;font-size:1.1rem;display:block;font-variation-settings:"wdth" 92}
@media (max-width:820px){ .next-list{grid-template-columns:minmax(0,1fr)} }

/* ---------- Page heads ---------- */
.page-head{padding-block:clamp(2.5rem,6vw,4.5rem) clamp(1.5rem,4vw,2.5rem)}
.page-head h1{font-size:clamp(2.4rem,6vw,4.4rem);margin-bottom:1.25rem}
.crumb{font-family:var(--display);font-weight:500;font-size:.95rem;margin:0 0 1rem}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--verdigris)}

/* ---------- Venture blocks ---------- */
.venture{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:clamp(1.5rem,5vw,4.5rem);padding-block:clamp(2.5rem,5vw,3.75rem);border-top:1px solid var(--rule)}
.venture h2{margin-bottom:.6rem}
.venture .what{font-family:var(--display);font-size:1.15rem;color:var(--verdigris);font-weight:500;margin:0 0 1.25rem;font-variation-settings:"wdth" 95}
.venture .track{margin:.5rem 0 .4rem;max-width:22rem}
.venture .track-labels{display:grid;grid-template-columns:repeat(4,1fr);font-family:var(--display);font-size:.8rem;color:var(--muted);text-align:center;max-width:22rem;font-variation-settings:"wdth" 85}
.venture .links{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;margin-top:1.25rem;font-family:var(--display);font-weight:500}
@media (max-width:820px){ .venture{grid-template-columns:minmax(0,1fr)} }

dl.spec{display:grid;grid-template-columns:9rem minmax(0,1fr);gap:.55rem 1.25rem;margin:1.5rem 0 0;max-width:40rem}
dl.spec dt{font-family:var(--display);font-weight:600;font-size:.95rem;font-variation-settings:"wdth" 92}
dl.spec dd{margin:0}
@media (max-width:560px){ dl.spec{grid-template-columns:minmax(0,1fr);gap:.1rem} dl.spec dd{margin-bottom:.6rem} }

/* ---------- Apps showcase ---------- */
.app{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(1.5rem,5vw,4rem);align-items:center;padding-block:clamp(2rem,5vw,3.25rem);border-top:1px solid var(--rule)}
.app:nth-of-type(even) .shot{order:2}
.app .shot{display:block;border:1px solid var(--rule);background:#fff;overflow:hidden}
.app .shot img{width:100%;aspect-ratio:960/608;object-fit:cover;object-position:top}
.app .shot:hover{border-color:var(--verdigris)}
.app h3{font-size:1.75rem;margin-bottom:.6rem}
.app .for{font-family:var(--display);font-weight:500;color:var(--verdigris);margin:0 0 .9rem;font-variation-settings:"wdth" 95}
@media (max-width:820px){ .app{grid-template-columns:minmax(0,1fr)} .app:nth-of-type(even) .shot{order:0} }

.workshop{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 3rem}
.workshop > div{padding:1.4rem 0;border-top:1px solid var(--rule)}
.workshop h3{font-size:1.2rem;margin-bottom:.4rem}
.workshop p{margin:0;font-size:.98rem}
@media (max-width:820px){ .workshop{grid-template-columns:minmax(0,1fr)} }

/* ---------- Contact band ---------- */
.cta{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2rem;align-items:end}
.cta h2{max-width:28rem}
@media (max-width:720px){ .cta{grid-template-columns:minmax(0,1fr)} }

/* ---------- Footer ---------- */
.site-foot{padding-block:2.5rem 3rem;border-top:1px solid var(--rule);font-size:.92rem;color:var(--muted)}
.site-foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem 2rem}
.site-foot a{color:var(--muted)}
.site-foot a:hover{color:var(--verdigris)}
.site-foot ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.5rem 1.5rem}

@media (prefers-reduced-motion:no-preference){
  .stage-row .tick.now{animation:arrive .9s cubic-bezier(.2,.7,.2,1) both;animation-delay:calc(var(--i,0) * 120ms + 200ms)}
  @keyframes arrive{from{transform:scale(.2);opacity:0}to{transform:none;opacity:1}}
}
.principles.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){ .principles.four{grid-template-columns:repeat(2,minmax(0,1fr))} }
@media (max-width:560px){ .principles.four{grid-template-columns:minmax(0,1fr)} }
.wrap.prose{max-width:var(--wrap)}
.wrap.prose > *{max-width:var(--measure)}
.wrap.prose > dl.spec{max-width:40rem}
.page-head .track-labels{display:grid;grid-template-columns:repeat(4,1fr);font-family:var(--display);font-size:.8rem;color:var(--muted);text-align:center;max-width:22rem;font-variation-settings:"wdth" 85}