:root{
  --ink:#171223;
  --ink-soft:#4A4458;
  --bg:#FAF9FC;
  --bg-alt:#F1EEFA;
  --purple:#6D28F2;
  --purple-dark:#4A1AB8;
  --pink:#F72C8C;
  --pink-dark:#C21F6C;
  --line:#E4E0EF;
  --white:#FFFFFF;
  --radius:14px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
}
h1,h2,h3{
  font-family:'Space Grotesk',sans-serif;
  font-weight:600;
  line-height:1.15;
  margin:0 0 0.6em;
  color:var(--ink);
}
h1{font-size:clamp(2.1rem,4.5vw,3.4rem);font-weight:700;letter-spacing:-0.01em;}
h2{font-size:clamp(1.5rem,2.8vw,2.1rem);}
h3{font-size:1.15rem;}
p{margin:0 0 1em;color:var(--ink-soft);}
a{color:inherit;text-decoration:none;}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px;}
.center{text-align:center;margin-left:auto;margin-right:auto;}

.eyebrow{
  font-family:'Space Grotesk',sans-serif;
  font-size:0.8rem;
  font-weight:600;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--purple);
  margin:0 0 0.9em;
}

/* header */
.site-header{
  position:sticky;top:0;z-index:20;
  background:rgba(250,249,252,0.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;padding-bottom:14px;
}
.logo{height:38px;width:auto;display:block;}
nav{display:flex;align-items:center;gap:28px;font-size:0.92rem;font-weight:500;}
nav a{color:var(--ink-soft);}
nav a:hover{color:var(--ink);}
.nav-cta{
  background:var(--ink);
  color:var(--white);
  padding:9px 18px;
  border-radius:999px;
  font-size:0.85rem;
}
.nav-cta:hover{opacity:0.88;}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:36px;height:36px;
  background:none;border:none;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  display:block;width:22px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

@media (max-width:720px){
  .nav-toggle{display:flex;}
  nav{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    background:var(--bg);
    border-bottom:1px solid var(--line);
    max-height:0;
    overflow:hidden;
    transition:max-height 0.3s ease;
  }
  nav.is-open{max-height:340px;}
  nav a{
    width:100%;
    padding:14px 24px;
    border-top:1px solid var(--line);
  }
  .nav-cta{
    border-radius:0;
    text-align:center;
  }
}

/* hero */
.hero{
  position:relative;
  overflow:hidden;
  padding:96px 0 88px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr 1.1fr;
  align-items:center;
  gap:40px;
  position:relative;
  z-index:2;
}
.hero-inner{
  max-width:600px;
}
@media (max-width:820px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-inner{max-width:100%;}
}
.hero-sub{font-size:1.1rem;max-width:600px;}
.hero-actions{display:flex;gap:14px;margin-top:32px;}
@media (max-width:540px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
}

.hero-rotator{
  display:flex;align-items:center;gap:10px;
  margin-top:28px;
  font-family:'Space Grotesk',sans-serif;
  font-size:0.88rem;font-weight:500;
  color:var(--ink-soft);
  min-height:1.4em;
}
.rotator-dot{
  width:7px;height:7px;border-radius:50%;
  flex:none;
  background:linear-gradient(90deg,var(--purple),var(--pink));
  animation:dot-pulse 1.8s ease-in-out infinite;
}
@keyframes dot-pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:0.4;transform:scale(0.7);}
}
.rotator-text{transition:opacity 0.35s ease;}
.rotator-text.is-fading{opacity:0;}
@media (prefers-reduced-motion: reduce){
  .rotator-dot{animation:none;}
}

/* hero atmosphere */
.hero-orbs{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:0.35;}
.orb-a{
  width:340px;height:340px;top:-120px;left:-60px;
  background:radial-gradient(circle,var(--pink),transparent 70%);
  animation:drift-a 14s ease-in-out infinite;
}
.orb-b{
  width:260px;height:260px;bottom:-100px;left:220px;
  background:radial-gradient(circle,var(--purple),transparent 70%);
  animation:drift-b 18s ease-in-out infinite;
}
@keyframes drift-a{
  0%,100%{transform:translate(0,0);}
  50%{transform:translate(-30px,25px);}
}
@keyframes drift-b{
  0%,100%{transform:translate(0,0);}
  50%{transform:translate(20px,-20px);}
}

.hero-network{
  width:100%;
  height:auto;
  max-width:420px;
  justify-self:center;
  opacity:1;
  pointer-events:none;
}
.net-drift{animation:net-float 10s ease-in-out infinite;}
@keyframes net-float{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-10px);}
}
.hero-network .node{animation:node-glow 3.5s ease-in-out infinite;}
.hero-network .node-2,.hero-network .node-4{animation-delay:0.8s;}
.hero-network .node-5,.hero-network .node-6{animation-delay:1.6s;}
@keyframes node-glow{
  0%,100%{opacity:1;}
  50%{opacity:0.4;}
}

@media (prefers-reduced-motion: reduce){
  .orb-a,.orb-b,.net-drift,.hero-network .node{animation:none;}
}
@media (max-width:820px){
  .hero-network{display:none;}
}

.section-network{
  position:absolute;
  top:0;height:100%;
  width:260px;
  opacity:0.55;
  z-index:0;
  pointer-events:none;
}
.net-left{left:-40px;}
.net-right{right:-40px;}
@media (max-width:900px){
  .section-network{display:none;}
}
.fronts .wrap,.solutions-inner{position:relative;z-index:1;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:0.95rem;
  transition:transform 0.15s ease, opacity 0.15s ease;
}
.btn-primary{
  background:linear-gradient(90deg,var(--purple),var(--pink));
  color:var(--white);
}
.btn-primary:hover{transform:translateY(-1px);opacity:0.94;}
.btn-ghost{
  border:1px solid var(--line);
  color:var(--ink);
  background:var(--white);
}
.btn-ghost:hover{border-color:var(--ink-soft);}

.hero-band{margin-top:56px;}
.hero-band svg{width:100%;height:auto;display:block;}

/* badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:'Space Grotesk',sans-serif;
  font-size:0.75rem;font-weight:600;
  letter-spacing:0.03em;
  padding:5px 12px;
  border-radius:999px;
  margin-bottom:14px;
}
.badge::before{content:'';width:6px;height:6px;border-radius:50%;}
.badge-quiet{background:var(--bg-alt);color:var(--ink-soft);}
.badge-quiet::before{background:var(--ink-soft);}
.badge-live{background:#EAF6EF;color:#1D7A44;}
.badge-live::before{background:#2FA85E;}

/* two fronts */
.fronts{padding:80px 0 40px;position:relative;overflow:hidden;}
.fronts-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:40px;}
.front-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px 30px;
  transition:background 0.25s ease;
  cursor:pointer;
}
.front-card:focus-visible{outline:2px solid var(--purple);outline-offset:3px;}
.front-card h3{margin-bottom:0.5em;}
.front-card p{margin-bottom:0;}
.front-card-accent{}
.front-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:16px;font-weight:600;font-size:0.92rem;color:var(--purple);
}
.front-link-quiet{color:var(--ink-soft);}

/* zones */
.zone{position:relative;}
.zone-cnvrgnc{
  background:var(--bg-alt);
  padding-bottom:20px;
}
.zone-studio{
  background:var(--white);
  border-top:3px solid var(--ink);
  overflow:hidden;
  padding-bottom:70px;
}
.zone-header{
  text-align:center;
  padding:64px 0 36px;
  position:relative;
  z-index:1;
}
.zone-title{
  font-size:clamp(2rem,4vw,2.7rem);
  margin-bottom:0.25em;
}
.zone-tag{
  color:var(--ink-soft);
  font-size:0.92rem;
  margin:0;
}

.iso-scene-wrap{max-width:520px;margin:0 auto;padding:0 0 12px;}
.iso-scene{width:100%;height:auto;display:block;overflow:visible;}
.iso-float-a{animation:iso-float-a 4.2s ease-in-out infinite;transform-origin:182px 100px;}
.iso-float-b{animation:iso-float-b 5s ease-in-out infinite;animation-delay:0.6s;transform-origin:305px 78px;}
.iso-ring-float{animation:iso-float-a 3.6s ease-in-out infinite;animation-delay:1.1s;transform-origin:240px 60px;}
@keyframes iso-float-a{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-8px);}
}
@keyframes iso-float-b{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-10px);}
}
.iso-scene .node{animation:node-glow 3.2s ease-in-out infinite;}
.iso-scene .node-2{animation-delay:1s;}
@media (prefers-reduced-motion: reduce){
  .iso-float-a,.iso-float-b,.iso-ring-float,.iso-scene .node{animation:none;}
}
@media (max-width:640px){
  .iso-scene-wrap{max-width:380px;}
}

.zone-rail-wrap{
  position:sticky;
  top:110px;
  height:0;
  z-index:3;
  display:none;
}
.zone-rail{
  position:absolute;
  left:20px;
  top:0;
  writing-mode:vertical-rl;
  transform:rotate(180deg);
  font-family:'Space Grotesk',sans-serif;
  font-size:0.7rem;
  font-weight:600;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--ink-soft);
  opacity:0.55;
  white-space:nowrap;
}
.zone-rail-wrap-right .zone-rail{left:auto;right:20px;}
@media (min-width:1300px){
  .zone-rail-wrap{display:block;}
}

/* problem */
.problem-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;padding:20px 0 56px;}
.problem-grid h3{font-size:clamp(1.25rem,2.2vw,1.55rem);}

/* product */
.product-teaser{max-width:640px;text-align:center;margin:0 auto;padding:36px 0 60px;}
.product-teaser h3{font-size:clamp(1.4rem,2.6vw,1.9rem);}
.product-teaser-body{margin-top:8px;font-size:1.05rem;}
.product-teaser-icon{display:flex;justify-content:center;margin-top:36px;}
.product-teaser-icon svg{width:56px;height:56px;overflow:visible;}
.pulse-ring{
  transform-origin:32px 32px;
  animation:pulse 2.6s ease-out infinite;
}
.hero-pulse-ring{
  transform-origin:322px 210px;
  animation:pulse 2.6s ease-out infinite;
}
.orbit-wide{
  transform-origin:322px 210px;
  animation:orbit 6s linear infinite;
}
@media (prefers-reduced-motion: reduce){
  .pulse-ring,.orbit-particle,.hero-pulse-ring,.orbit-wide{animation:none;}
}
.orbit-particle{
  transform-origin:32px 32px;
  animation:orbit 4s linear infinite;
}
@keyframes orbit{
  from{transform:rotate(0deg);}
  to{transform:rotate(360deg);}
}
@keyframes pulse{
  0%{transform:scale(0.6);opacity:0.9;}
  100%{transform:scale(1.5);opacity:0;}
}
@media (prefers-reduced-motion: reduce){
  .pulse-ring,.orbit-particle,.hero-pulse-ring{animation:none;}
}

/* reveal on scroll */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none;}
}

/* how — dark inset panel within the CNVRGNC zone */
.how-inner-wrap{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--white);
  border-radius:24px;
  padding:64px 8px;
  max-width:1120px;
  margin:0 auto 20px;
}
.how-signal{
  position:absolute;
  right:-60px;top:50%;
  transform:translateY(-50%);
  width:420px;height:420px;
  opacity:0.5;
  pointer-events:none;
}
.signal-ring{transform-origin:200px 200px;animation:signal-out 4.5s ease-out infinite;}
.signal-ring.r2{animation-delay:1.1s;}
.signal-ring.r3{animation-delay:2.2s;}
@keyframes signal-out{
  0%{transform:scale(0.75);opacity:0.9;}
  100%{transform:scale(1.15);opacity:0;}
}
@media (prefers-reduced-motion: reduce){
  .signal-ring{animation:none;}
}
@media (max-width:820px){
  .how-signal{display:none;}
  .how-inner-wrap{border-radius:0;}
}
.how-inner{max-width:680px;position:relative;z-index:1;}
.how-inner-wrap .eyebrow{color:#C9A8FF;}
.how-inner-wrap h3{color:var(--white);font-size:clamp(1.3rem,2.4vw,1.8rem);}
.how-body{color:#CFC9DE;font-size:1.05rem;}

/* solutions */
.solutions-inner{max-width:900px;padding:36px 0 0;position:relative;z-index:1;}
.solutions-inner h3{font-size:clamp(1.4rem,2.6vw,1.9rem);}
.solutions-lead{max-width:640px;font-size:1.05rem;margin:10px auto 40px;}
.solutions-lead.center{margin-left:auto;margin-right:auto;}
.solutions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.solutions-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  transition:transform 0.18s ease, border-color 0.18s ease;
}
.solutions-item:hover{transform:translateY(-3px);border-color:var(--purple);}
.solutions-illustration{width:100%;height:auto;margin-bottom:18px;display:block;}
.float-badge{animation:float-badge 3.2s ease-in-out infinite;}
@keyframes float-badge{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-5px);}
}
.solutions-illustration .node{animation:node-glow 3.2s ease-in-out infinite;}
.solutions-illustration .node-2{animation-delay:1s;}
@media (prefers-reduced-motion: reduce){
  .float-badge,.solutions-illustration .node{animation:none;}
}
.solutions-item h3{font-size:1.02rem;margin-bottom:0.4em;}
.solutions-item p{font-size:0.94rem;margin:0;}

/* founder */
.founder{padding:88px 0;background:var(--bg-alt);}
.founder-inner{max-width:700px;}
.founder-photo-wrap{
  width:88px;height:88px;
  border-radius:50%;
  padding:3px;
  background:linear-gradient(135deg,var(--purple),var(--pink));
  margin-bottom:22px;
}
.founder-photo{
  width:100%;height:100%;
  border-radius:50%;
  object-fit:cover;
  display:block;
  border:3px solid var(--bg-alt);
}

/* contact */
.contact{padding:100px 0;text-align:center;}
.contact-inner{max-width:560px;margin:0 auto;}
.contact p{max-width:460px;margin-left:auto;margin-right:auto;}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:24px 0;}
.footer-inner{
  display:flex;justify-content:space-between;
  font-size:0.85rem;color:var(--ink-soft);
}

/* glow-card: progressive pen-trace border on hover, IBM-style */
.glow-card{
  position:relative;
}
.glow-card:hover{background:var(--bg-alt);}
.glow-card.front-card-accent:hover{background:var(--bg-alt);}
.glow-border{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  pointer-events:none;
  z-index:2;
  overflow:visible;
}
.glow-border rect{
  fill:none;
  stroke:url(#giqGrad);
  stroke-width:2;
  stroke-dasharray:100;
  stroke-dashoffset:100;
  transition:stroke-dashoffset 0.7s ease;
}
.glow-card:hover .glow-border rect{
  stroke-dashoffset:0;
}
.glow-card.is-selected .glow-border rect{
  stroke-dashoffset:0;
}
.glow-card.is-selected{background:var(--bg-alt);}
@media (prefers-reduced-motion: reduce){
  .glow-border rect{transition:opacity 0.2s ease;stroke-dasharray:none;stroke-dashoffset:0;opacity:0;}
  .glow-card:hover .glow-border rect{opacity:1;}
}

@media (max-width:820px){
  nav{gap:14px;font-size:0.85rem;}
  .problem-grid{grid-template-columns:1fr;gap:32px;}
  .fronts-grid{grid-template-columns:1fr;}
  .solutions-grid{grid-template-columns:1fr;}
  .footer-inner{flex-direction:column;gap:6px;}
}