/* ══════════════════════════════════════════════════════════
   tabyte — shared design language
   Editorial · Grounded · Electric
   Fonts: Fraunces (display italic accents) + Inter (everything else)
   Do not add new colors. Do not change radii or shadows.
   ══════════════════════════════════════════════════════════ */
:root{
  --paper:#f7f9f2; --surface:#ffffff; --sunken:#eff1e8;
  --ink:#0a211f; --ink-800:#16352f; --raised:#23453f;
  --muted:#5b6b66; --on-dark:#edf0e7; --muted-dark:#a9b4ae;
  --lime:#d8f880; --lime-600:#c7ee5f; --lime-700:#b6e23f;
  --line:#e4e6de; --line-strong:#cdd3cb; --line-dark:rgba(237,240,231,.14);
  --sans:"Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif:"Fraunces", ui-serif, Georgia, "Times New Roman", serif;
  --wrap:1200px; --wide:1360px;
  --sh-card:0 1px 2px rgb(10 33 31 / .04), 0 4px 16px rgb(10 33 31 / .06);
  --sh-raised:0 2px 4px rgb(10 33 31 / .05), 0 18px 44px -18px rgb(10 33 31 / .22);
  --ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0; background:var(--paper); color:var(--ink); font-family:var(--sans); font-size:17px; line-height:1.6; -webkit-font-smoothing:antialiased; overflow-x:hidden;}
a{color:inherit; text-decoration:none;}
h1,h2,h3{margin:0; font-weight:500; letter-spacing:-0.02em; line-height:1.03; text-wrap:balance;}
p{margin:0;}
em{font-family:var(--serif); font-style:italic; font-weight:400; letter-spacing:-0.01em;}
:focus-visible{outline:2.5px solid var(--ink); outline-offset:3px; border-radius:8px;}
.on-dark :focus-visible{outline-color:var(--lime);}
.wrap{max-width:var(--wrap); margin-inline:auto; padding-inline:clamp(20px,4vw,44px);}
.wide{max-width:var(--wide); margin-inline:auto; padding-inline:clamp(20px,4vw,44px);}

.eyebrow{font-size:12px; font-weight:600; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); margin:0;}
.on-dark .eyebrow{color:var(--lime);}

/* buttons */
.btn{display:inline-flex; align-items:center; gap:9px; font-weight:500; font-size:16px; padding:14px 26px; border-radius:999px; border:1px solid transparent; cursor:pointer; transition:transform .18s var(--ease), background .18s, border-color .18s;}
.btn:active{transform:scale(.985);}
.btn-lime{background:var(--lime); color:var(--ink);}
.btn-lime:hover{background:var(--lime-600);}
.btn-outline{background:transparent; border-color:var(--line-strong); color:var(--ink);}
.btn-outline:hover{background:var(--sunken);}
.on-dark .btn-outline{border-color:var(--line-dark); color:var(--on-dark);}
.on-dark .btn-outline:hover{background:rgba(237,240,231,.08);}
.btn-sm{padding:10px 18px; font-size:14px;}
.icn{width:1.05em; height:1.05em; flex:none;}

/* nav */
header{position:sticky; top:0; z-index:60; background:color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter:blur(12px); border-bottom:1px solid var(--line);}
header.on-ink{background:color-mix(in srgb, var(--ink) 82%, transparent); border-bottom-color:var(--line-dark); color:var(--on-dark);}
header.on-ink .nav-links a{color:var(--muted-dark);}
header.on-ink .nav-links a:hover, header.on-ink .nav-links a.active{color:var(--on-dark);}
nav.bar{display:flex; align-items:center; justify-content:space-between; gap:18px; height:66px;}
.logo{font-weight:600; font-size:22px; letter-spacing:-0.03em;}
.nav-links{display:flex; gap:30px;}
.nav-links a{font-size:14.5px; color:var(--muted); transition:.15s;}
.nav-links a:hover, .nav-links a.active{color:var(--ink);}
.nav-dropdown{position:relative; display:flex; align-items:center;}
.nav-dropdown>button{display:inline-flex; align-items:center; gap:7px; padding:0; border:0; background:transparent; color:var(--muted); font:inherit; font-size:14.5px; cursor:pointer; transition:color .15s;}
.nav-dropdown>button::after{content:""; width:6px; height:6px; border-right:1.5px solid currentColor; border-bottom:1.5px solid currentColor; transform:rotate(45deg) translateY(-2px);}
.nav-dropdown:hover>button,.nav-dropdown:focus-within>button,.nav-dropdown>button.active{color:var(--ink);}
.nav-menu{position:absolute; top:calc(100% + 22px); left:50%; min-width:210px; padding:8px; border:1px solid var(--line); border-radius:16px; background:var(--surface); box-shadow:var(--sh-raised); opacity:0; visibility:hidden; transform:translate(-50%,-6px); transition:opacity .16s,transform .16s,visibility .16s;}
.nav-menu::before{content:""; position:absolute; left:0; right:0; bottom:100%; height:22px;}
.nav-dropdown:hover .nav-menu,.nav-dropdown:focus-within .nav-menu{opacity:1; visibility:visible; transform:translate(-50%,0);}
.nav-menu a{display:block; padding:10px 12px; border-radius:10px; white-space:nowrap; color:var(--muted);}
.nav-menu a:hover,.nav-menu a.active{background:var(--sunken); color:var(--ink);}
.nav-menu.mega-menu{left:0; width:min(720px,calc(100vw - 40px)); padding:0; display:grid; grid-template-columns:1.15fr .85fr; overflow:hidden; transform:translateY(-6px);}
.nav-dropdown:hover .mega-menu,.nav-dropdown:focus-within .mega-menu{transform:translateY(0);}
.mega-products,.mega-capabilities{padding:28px 30px;}
.mega-capabilities{border-left:1px solid var(--line); background:color-mix(in srgb,var(--surface) 72%,var(--sunken));}
.mega-label{margin:0 0 13px; color:var(--muted); font-size:10.5px; font-weight:600; letter-spacing:.16em; text-transform:uppercase;}
.nav-menu .mega-product{padding:10px; display:flex; align-items:center; gap:13px; white-space:normal;}
.mega-product+.mega-product{margin-top:4px;}
.mega-icon{width:42px; height:42px; flex:none; display:grid; place-items:center; border-radius:11px; background:var(--sunken); color:var(--ink);}
.mega-icon svg{width:20px; height:20px;}
.mega-product>span:last-child{min-width:0; display:flex; flex-direction:column;}
.mega-product strong{color:var(--ink); font-size:14.5px; font-weight:600;}
.mega-product small{margin-top:2px; color:var(--muted); font-size:12.5px; line-height:1.35;}
.nav-menu .mega-capabilities a{padding:8px 0; border-radius:0; color:var(--ink); font-size:14px; white-space:normal; transition:color .15s,transform .15s;}
.nav-menu .mega-capabilities a:hover{background:transparent; color:#58700f; transform:translateX(3px);}
.nav-menu .mega-capabilities a::after{content:"→"; margin-left:7px; color:var(--lime-700); opacity:0; transition:opacity .15s;}
.nav-menu .mega-capabilities a:hover::after{opacity:1;}
.nav-menu.resources-menu{left:0; width:min(560px,calc(100vw - 40px)); padding:0; display:grid; grid-template-columns:1fr 1fr; overflow:hidden; transform:translateY(-6px);}
.nav-dropdown:hover .resources-menu,.nav-dropdown:focus-within .resources-menu{transform:translateY(0);}
.resource-column{padding:28px 30px;}
.resource-column+.resource-column{border-left:1px solid var(--line); background:color-mix(in srgb,var(--surface) 72%,var(--sunken));}
.nav-menu .resource-column a{padding:8px 0; border-radius:0; color:var(--ink); font-size:14px; white-space:normal; transition:color .15s,transform .15s;}
.nav-menu .resource-column a:hover{background:transparent; color:#58700f; transform:translateX(3px);}
.nav-menu .resource-column a::after{content:"→"; margin-left:7px; color:var(--lime-700); opacity:0; transition:opacity .15s;}
.nav-menu .resource-column a:hover::after{opacity:1;}
.hero-index .nav-dropdown>button{font-weight:600; color:var(--foreground);}
.hero-index .nav-menu a{color:var(--muted);}
.hero-index .mega-capabilities a{color:var(--foreground);}
.hero-index .resource-column a{color:var(--foreground);}
.hero-index .nav-action-link{font-size:14px; font-weight:600; color:var(--foreground); white-space:nowrap; transition:color .15s;}
.hero-index .nav-action-link:hover{color:var(--forest-600);}
.hero-index .nav-actions{gap:20px;}
.mobile-menu-toggle{display:none; width:42px; height:42px; flex:none; padding:0; border:1px solid var(--line-strong); border-radius:50%; background:var(--surface); color:var(--ink); cursor:pointer; align-items:center; justify-content:center; flex-direction:column; gap:4px; transition:background .16s,border-color .16s,transform .16s;}
.mobile-menu-toggle:hover{background:var(--sunken); border-color:var(--muted);}
.mobile-menu-toggle:active{transform:scale(.96);}
.mobile-menu-toggle span{display:block; width:17px; height:2px; border-radius:0; background:#0a211f; opacity:1; transform-origin:center; transition:transform .2s,opacity .15s;}
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
.mobile-nav-panel{position:absolute; top:calc(100% + 10px); right:clamp(12px,2.5vw,48px); width:min(360px,calc(100vw - 24px)); padding:12px; border:1px solid var(--line); border-radius:20px; background:var(--surface); box-shadow:var(--sh-raised); opacity:0; visibility:hidden; transform:translateY(-8px); transition:opacity .18s,visibility .18s,transform .18s;}
.mobile-nav-panel.is-open{opacity:1; visibility:visible; transform:none;}
.mobile-nav-group{display:flex; flex-direction:column; padding:12px;}
.mobile-nav-group+.mobile-nav-group{border-top:1px solid var(--line);}
.mobile-nav-group>span{margin-bottom:6px; color:var(--muted); font-size:10.5px; font-weight:700; letter-spacing:.14em; text-transform:uppercase;}
.mobile-nav-group a{padding:10px 0; color:var(--ink); font-size:15px; font-weight:600;}
.mobile-nav-group a:hover{color:var(--forest-600);}
@media(max-width:980px){
  .mobile-menu-toggle{display:flex;}
  .hero-index .nav-actions{gap:8px;}
}
@media(min-width:981px){.mobile-nav-panel{display:none;}}
@media(max-width:860px){ .nav-links{display:none;} }
@media(max-width:700px){ .hero-index .nav-action-link{display:none;} }
@media(max-width:430px){
  .hero-index header .btn-sm{padding-inline:13px; font-size:13px;}
  .mobile-menu-toggle{width:40px; height:40px;}
}

section{padding-block:clamp(64px,8vw,110px);}
.sec-head{max-width:680px;}
.sec-head h2{font-size:clamp(32px,4.6vw,56px); margin-top:16px;}
.sec-head p{color:var(--muted); font-size:clamp(16px,1.6vw,19px); margin-top:18px; max-width:46ch;}
.sec-head.centered{max-width:none; margin-inline:auto; text-align:center;}
.sec-head.centered>p{margin-inline:auto;}

/* ── manifesto hero (homepage) ── */
.hero-index .hero-stage,
.hero-index .hero-bg{background:#031614;}
.hero-index .hero-content{
  gap:18px;
  padding-top:clamp(6.25rem, 11vh, 7.5rem);
}
.hero-index .hero-copy h1{
  max-width:18ch;
  font-size:clamp(2.65rem, 4vw, 3.75rem);
  line-height:1.04;
}
.hero-index .hero-copy .launch{margin-bottom:14px;}
.hero-index .hero-aside p{max-width:36rem; line-height:1.45;}
.hero-index .cta-row{margin-top:24px;}
.hero-index .hero-aside .down{display:none;}
@media(max-width:880px){
  .hero-index .hero-bg img{
    top:auto;
    bottom:0;
    left:50%;
    width:min(72rem, 140vw);
    height:auto;
    transform:translateX(-50%);
  }
  .hero-index .hero-content{gap:16px; padding-top:5.75rem;}
  .hero-index .hero-copy h1{max-width:16ch; font-size:clamp(2.4rem, 6.5vw, 3.25rem);}
  .hero-index .hero-aside p{max-width:32rem;}
}
@media(max-width:560px){
  .hero-index .hero-bg img{
    top:auto;
    bottom:0;
    width:56rem;
  }
  .hero-index .hero-content{gap:15px; padding-top:5.25rem;}
  .hero-index .hero-copy h1{max-width:14ch; font-size:clamp(2.15rem, 9.5vw, 2.7rem);}
  .hero-index .hero-copy .launch{margin-bottom:10px;}
  .hero-index .hero-aside p{max-width:29rem; line-height:1.4;}
  .hero-index .cta-row{margin-top:20px;}
}
.manifesto{background:var(--ink); color:var(--on-dark); text-align:center; padding-block:clamp(96px,14vw,190px) clamp(88px,12vw,170px);}
.manifesto h1{color:var(--on-dark); font-size:clamp(42px,7.4vw,96px); letter-spacing:-0.03em; line-height:1.02; max-width:16ch; margin-inline:auto;}
.manifesto h1 em{color:var(--lime);}
.manifesto .sub{color:var(--muted-dark); font-size:clamp(17px,2vw,23px); margin-top:26px; max-width:44ch; margin-inline:auto; line-height:1.5;}
.manifesto .cta{display:flex; gap:13px; flex-wrap:wrap; justify-content:center; margin-top:38px;}
.manifesto .down{display:inline-flex; margin-top:clamp(48px,7vw,84px); color:var(--muted-dark); animation:drift 2.6s var(--ease) infinite;}
@keyframes drift{0%,100%{transform:translateY(0);} 50%{transform:translateY(8px);}}

/* ── product showcase ── */
.product-showcase{padding-block:clamp(56px,7vw,96px) 0;}
.showcase-intro{max-width:720px; margin:0 auto clamp(28px,4vw,42px); text-align:center;}
.showcase-intro .eyebrow{color:var(--muted);}
.showcase-intro h2{margin-top:14px; font-size:clamp(32px,4.5vw,54px);}
.showcase-intro>p:last-child{max-width:58ch; margin:18px auto 0; color:var(--muted); font-size:17px; line-height:1.55;}
.showcase-tabs{width:max-content; max-width:100%; margin:0 auto 16px; padding:6px; display:flex; gap:4px; overflow-x:auto; border-radius:999px; background:var(--sunken);}
.showcase-tab{padding:9px 16px; border:0; border-radius:999px; background:transparent; color:var(--muted); font:inherit; font-size:14px; font-weight:500; white-space:nowrap; cursor:pointer; transition:color .18s,background .18s,box-shadow .18s;}
.showcase-tab.active{background:var(--surface); color:var(--ink); box-shadow:var(--sh-card);}
.showcase-tab:focus-visible{outline:2px solid var(--ink); outline-offset:2px;}
.showcase-stage{position:relative; overflow:hidden; min-height:650px; padding:clamp(32px,5vw,64px); border-radius:30px; background:var(--ink); color:var(--on-dark); isolation:isolate;}
.showcase-stage::before{content:""; position:absolute; inset:auto -8% -45% 36%; height:90%; border-radius:50%; background:radial-gradient(circle,rgba(216,248,128,.2),transparent 65%); z-index:-1;}
.showcase-copy{max-width:600px; text-align:center; margin-inline:auto;}
.showcase-copy .eyebrow{color:var(--lime);}
.showcase-copy h2{margin-top:14px; color:var(--on-dark); font-size:clamp(34px,4.8vw,58px);}
.showcase-copy h2 em{color:var(--lime);}
.showcase-copy>p:last-child{max-width:50ch; margin:18px auto 0; color:var(--muted-dark); font-size:17px; line-height:1.5;}
.showcase-ui{position:relative; max-width:1040px; margin:42px auto 0; min-height:355px;}
.showcase-stage.slide-forward .showcase-copy,.showcase-stage.slide-forward .showcase-ui{animation:showcase-in-forward .42s var(--ease) both;}
.showcase-stage.slide-back .showcase-copy,.showcase-stage.slide-back .showcase-ui{animation:showcase-in-back .42s var(--ease) both;}
.showcase-stage.slide-forward .showcase-ui,.showcase-stage.slide-back .showcase-ui{animation-delay:.05s;}
@keyframes showcase-in-forward{from{opacity:0; transform:translateX(42px);}to{opacity:1; transform:translateX(0);}}
@keyframes showcase-in-back{from{opacity:0; transform:translateX(-42px);}to{opacity:1; transform:translateX(0);}}
.showcase-app{overflow:hidden; width:88%; min-height:350px; border:1px solid var(--line-dark); border-radius:20px; background:var(--paper); color:var(--ink); box-shadow:0 28px 70px rgb(0 0 0 / .3);}
.showcase-appbar{height:58px; padding:0 18px; display:flex; align-items:center; justify-content:space-between; border-bottom:1px solid var(--line); background:var(--surface); font-size:13px;}
.showcase-appbar>div{display:flex; align-items:center; gap:9px;}
.app-mark{width:28px; height:28px; display:grid; place-items:center; border-radius:9px; background:var(--ink); color:var(--lime); font-family:var(--serif); font-style:italic; font-size:18px;}
.status-dot{display:flex; align-items:center; gap:7px; color:var(--muted);}
.status-dot::before{content:""; width:7px; height:7px; border-radius:50%; background:var(--lime-700); box-shadow:0 0 0 4px rgb(182 226 63 / .16);}
.showcase-body{display:grid; grid-template-columns:190px 1fr; min-height:292px;}
.showcase-sidebar{padding:20px 14px; display:flex; flex-direction:column; gap:5px; border-right:1px solid var(--line); background:var(--surface);}
.showcase-sidebar strong{padding:7px 10px 13px; font-size:12px; text-transform:uppercase; letter-spacing:.08em;}
.showcase-sidebar span{padding:8px 10px; border-radius:9px; color:var(--muted); font-size:13px;}
.showcase-sidebar .selected{background:var(--sunken); color:var(--ink); font-weight:600;}
.showcase-answer{padding:26px clamp(22px,4vw,46px);}
.question-label,.answer-kicker{color:var(--muted); font-size:11px; font-weight:700; letter-spacing:.08em; text-transform:uppercase;}
.showcase-answer h3{max-width:25ch; margin-top:8px; font-size:clamp(20px,2.3vw,28px); line-height:1.15;}
.answer-card{max-width:580px; margin-top:22px; padding:20px; border:1px solid var(--line); border-radius:15px; background:var(--surface); box-shadow:var(--sh-card);}
.answer-kicker{color:#5f7914;}
.answer-card p{margin-top:9px; font-size:14px; line-height:1.55;}
.source-chips{display:flex; flex-wrap:wrap; gap:7px; margin-top:15px;}
.source-chips span{padding:5px 9px; border-radius:999px; background:var(--sunken); color:var(--muted); font-size:11px;}
.showcase-phone{position:absolute; right:0; bottom:-18px; width:250px; min-height:320px; padding:11px; border:1px solid rgb(255 255 255 / .2); border-radius:28px; background:var(--raised); box-shadow:0 28px 60px rgb(0 0 0 / .42);}
.phone-top{height:42px; padding:0 7px; display:flex; align-items:center; justify-content:space-between; font-size:12px; font-weight:600;}
.phone-top i{width:8px; height:8px; border-radius:50%; background:var(--lime);}
.phone-thread{min-height:225px; padding:16px 12px; border-radius:18px; background:#dfe5d7; color:var(--ink);}
.bubble{width:88%; padding:10px 11px; border-radius:13px; font-size:11.5px; line-height:1.4; box-shadow:0 1px 2px rgb(10 33 31 / .08);}
.bubble.customer{margin-left:auto; border-bottom-right-radius:4px; background:var(--surface);}
.bubble.agent{margin-top:11px; border-bottom-left-radius:4px; background:var(--lime);}
.reply-time{display:block; margin-top:9px; color:var(--muted); font-size:9px; text-align:center;}
.phone-input{height:39px; margin-top:9px; padding:0 11px; display:flex; align-items:center; justify-content:space-between; border-radius:13px; background:var(--surface); color:var(--muted); font-size:11px;}
.phone-input span{width:23px; height:23px; display:grid; place-items:center; border-radius:50%; background:var(--lime); color:var(--ink);}
.showcase-foot{display:flex; align-items:center; justify-content:center; gap:24px; margin-top:18px;}
.showcase-foot>span{display:flex; align-items:center; gap:9px; color:var(--muted); font-size:14px;}
.showcase-foot>span i{width:7px; height:7px; border-radius:2px; background:var(--lime-700);}
@media(max-width:760px){
  .showcase-stage{min-height:720px; padding-inline:20px;}
  .showcase-ui{min-height:405px;}
  .showcase-app{width:100%;}
  .showcase-body{grid-template-columns:1fr;}
  .showcase-sidebar{display:none;}
  .showcase-answer{padding:22px 18px 100px;}
  .showcase-phone{right:12px; width:220px; transform:scale(.86); transform-origin:bottom right;}
  .showcase-foot{flex-direction:column; gap:14px;}
}
@media(max-width:480px){
  .showcase-tabs{width:100%;}
  .showcase-tab{padding-inline:12px; font-size:12px;}
  .showcase-stage{min-height:690px; border-radius:22px;}
  .showcase-phone{right:50%; transform:translateX(50%) scale(.8); transform-origin:bottom center;}
  .showcase-appbar .status-dot{display:none;}
}

/* ── product page hero ── */
.p-hero{padding-top:clamp(48px,7vw,88px);}
.p-hero .grid{display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(32px,5vw,64px); align-items:center;}
@media(max-width:920px){ .p-hero .grid{grid-template-columns:1fr;} }
.p-hero h1{font-size:clamp(40px,6vw,74px); margin-top:20px; letter-spacing:-0.03em; line-height:1.0;}
.p-hero .sub{color:var(--muted); font-size:clamp(17px,1.8vw,21px); margin-top:22px; max-width:42ch;}
.p-hero .cta{display:flex; gap:13px; flex-wrap:wrap; margin-top:30px;}

/* tabyte Agent hero */
.agent-hero{position:relative; isolation:isolate; overflow:hidden; padding-top:clamp(112px,10vw,150px); padding-bottom:clamp(84px,9vw,132px);}
.agent-hero::before{content:""; position:absolute; z-index:-2; inset:0; background:radial-gradient(circle at 82% 43%,rgba(216,248,128,.22),transparent 25%),linear-gradient(180deg,var(--paper),#f2f5eb);}
.agent-hero::after{content:""; position:absolute; z-index:-1; right:-8%; bottom:-45%; width:48vw; height:48vw; border:1px solid rgba(10,33,31,.06); border-radius:50%; box-shadow:0 0 0 72px rgba(10,33,31,.025),0 0 0 144px rgba(10,33,31,.015);}
.agent-hero .grid{grid-template-columns:minmax(0,1.08fr) minmax(430px,.92fr); gap:clamp(56px,8vw,136px);}
.agent-hero-copy{position:relative; z-index:2; max-width:760px;}
.agent-hero .eyebrow{display:inline-flex; align-items:center; gap:9px;}
.agent-hero .eyebrow::before{content:""; width:7px; height:7px; border-radius:50%; background:var(--lime-700); box-shadow:0 0 0 5px rgba(182,226,63,.17);}
.agent-hero h1{max-width:10.5ch; font-size:clamp(52px,5.5vw,84px); line-height:.96; margin-top:26px; text-wrap:balance;}
.agent-hero h1 em{position:relative; white-space:nowrap;}
.agent-hero h1 em::after{content:""; position:absolute; left:2%; right:0; bottom:-5px; height:7px; border-radius:99px; background:var(--lime); opacity:.7; transform:rotate(-1deg); z-index:-1;}
.agent-hero .sub{max-width:48ch; font-size:clamp(17px,1.45vw,21px); line-height:1.62;}
.agent-hero .cta{align-items:center; margin-top:28px;}
.agent-hero-link{display:inline-flex; align-items:center; gap:8px; padding:13px 10px; font-size:14px; font-weight:600; color:var(--ink);}
.agent-hero-link span{transition:transform .18s;}
.agent-hero-link:hover span{transform:translateY(3px);}
.agent-proof{display:flex; margin-top:36px; padding-top:24px; border-top:1px solid var(--line); max-width:610px;}
.agent-proof div{display:flex; flex-direction:column; min-width:0; padding-right:clamp(20px,3vw,42px);}
.agent-proof div+div{padding-left:clamp(20px,3vw,42px); border-left:1px solid var(--line);}
.agent-proof strong{font-family:var(--serif); font-size:24px; font-weight:600; line-height:1; color:var(--ink);}
.agent-proof span{margin-top:7px; color:var(--muted); font-size:11.5px; white-space:nowrap;}
.agent-hero-visual{position:relative; min-height:520px; display:grid; place-items:center;}
.agent-hero-visual .chat{position:relative; z-index:2; width:min(100%,460px); max-width:none; margin:0; padding:20px; border-color:rgba(10,33,31,.12); border-radius:26px; box-shadow:0 32px 70px -32px rgba(10,33,31,.38),0 12px 28px -20px rgba(10,33,31,.28); transform:rotate(1deg);}
.agent-hero-visual .chat-head{padding-bottom:17px;}
.agent-hero-visual .thread{gap:10px; padding-top:18px;}
.agent-hero-visual .msg{font-size:13.5px;}
.chat-file{display:flex; align-items:center; gap:7px; margin-top:10px; padding:8px 10px; border:1px solid rgba(237,240,231,.18); border-radius:9px; color:var(--on-dark); font-size:11.5px; font-weight:600;}
.chat-file>span{display:grid; place-items:center; width:18px; height:18px; border-radius:5px; background:var(--lime); color:var(--ink);}
.agent-live-label{position:absolute; z-index:3; top:0; left:50%; transform:translateX(-50%); display:flex; align-items:center; gap:7px; padding:8px 13px; border:1px solid var(--line); border-radius:999px; background:rgba(255,255,255,.9); box-shadow:var(--sh-card); backdrop-filter:blur(10px); color:var(--muted); font-size:11px; font-weight:600; white-space:nowrap;}
.agent-live-label span{width:7px; height:7px; border-radius:50%; background:var(--lime-700); box-shadow:0 0 0 4px rgba(182,226,63,.18);}
.agent-orbit{position:absolute; z-index:0; border:1px solid rgba(10,33,31,.1); border-radius:50%;}
.agent-orbit-one{width:490px; height:490px;}
.agent-orbit-two{width:390px; height:390px; border-style:dashed; opacity:.7;}
.agent-float-card{position:absolute; z-index:4; display:flex; align-items:center; border:1px solid rgba(10,33,31,.1); background:rgba(255,255,255,.94); box-shadow:0 16px 36px -22px rgba(10,33,31,.45); backdrop-filter:blur(12px);}
.agent-float-speed{top:88px; right:-16px; flex-direction:column; align-items:flex-start; padding:13px 17px; border-radius:15px;}
.agent-float-speed strong{font-family:var(--serif); font-size:25px; line-height:1;}
.agent-float-speed span{margin-top:4px; color:var(--muted); font-size:10.5px;}
.agent-float-source{left:-40px; bottom:44px; gap:10px; padding:12px 15px; border-radius:16px;}
.agent-float-source>span:last-child{display:flex; flex-direction:column; color:var(--muted); font-size:10px;}
.agent-float-source strong{margin-bottom:2px; color:var(--ink); font-size:11.5px;}
.agent-check{display:grid; place-items:center; width:30px; height:30px; border-radius:50%; background:var(--lime); color:var(--ink); font-weight:700;}
@media(max-width:1100px){
  .agent-hero .grid{gap:48px;}
  .agent-float-speed{right:0;}
  .agent-float-source{left:0;}
}
@media(max-width:920px){
  .agent-hero{padding-top:110px; text-align:center;}
  .agent-hero .grid{grid-template-columns:1fr;}
  .agent-hero-copy{margin-inline:auto;}
  .agent-hero h1,.agent-hero .sub,.agent-proof{margin-inline:auto;}
  .agent-hero .cta{justify-content:center;}
  .agent-hero .eyebrow{justify-content:center;}
  .agent-hero-visual{width:min(100%,620px); margin-inline:auto;}
}
@media(max-width:560px){
  .agent-hero{padding-top:96px; padding-bottom:72px;}
  .agent-hero h1{font-size:clamp(44px,13vw,64px);}
  .agent-hero .sub{font-size:16px;}
  .agent-proof{justify-content:center;}
  .agent-proof div{padding-right:14px;}
  .agent-proof div+div{padding-left:14px;}
  .agent-proof span{font-size:9.5px; white-space:normal;}
  .agent-hero-visual{min-height:500px;}
  .agent-live-label{top:5px;}
  .agent-hero-visual .chat{width:calc(100% - 8px); padding:15px; transform:none;}
  .agent-hero-visual .msg{font-size:12px; padding:10px 12px;}
  .agent-orbit-one{width:390px; height:390px;}
  .agent-orbit-two{width:310px; height:310px;}
  .agent-float-speed{top:56px; right:-4px;}
  .agent-float-source{left:-4px; bottom:12px;}
}

/* tabyte Knowledge hero */
.knowledge-hero{position:relative; isolation:isolate; overflow:hidden; padding-top:clamp(112px,10vw,150px); padding-bottom:clamp(84px,9vw,132px);}
.knowledge-hero::before{content:""; position:absolute; z-index:-2; inset:0; background:radial-gradient(circle at 80% 42%,rgba(146,233,240,.18),transparent 24%),radial-gradient(circle at 72% 62%,rgba(216,248,128,.16),transparent 30%),linear-gradient(180deg,var(--paper),#f2f5eb);}
.knowledge-hero::after{content:""; position:absolute; z-index:-1; right:-4%; top:22%; width:42vw; height:42vw; border:1px solid rgba(10,33,31,.055); border-radius:32% 68% 63% 37% / 40% 36% 64% 60%; transform:rotate(10deg);}
.knowledge-hero .grid{grid-template-columns:minmax(0,.96fr) minmax(540px,1.04fr); gap:clamp(56px,7vw,112px);}
.knowledge-hero-copy{position:relative; z-index:2; max-width:700px;}
.knowledge-hero .eyebrow{display:inline-flex; align-items:center; gap:9px;}
.knowledge-hero .eyebrow::before{content:"✦"; display:grid; place-items:center; width:19px; height:19px; border-radius:6px; background:var(--ink); color:var(--lime); font-size:10px;}
.knowledge-hero h1{max-width:10.5ch; font-size:clamp(52px,5.25vw,80px); line-height:.97; margin-top:26px; text-wrap:balance;}
.knowledge-hero h1 em{position:relative; white-space:nowrap;}
.knowledge-hero h1 em::after{content:""; position:absolute; left:1%; right:-1%; bottom:-4px; height:7px; border-radius:99px; background:linear-gradient(90deg,var(--lime),#92e9f0); opacity:.65; transform:rotate(-.7deg); z-index:-1;}
.knowledge-hero .sub{max-width:47ch; font-size:clamp(17px,1.4vw,20px); line-height:1.62;}
.knowledge-hero .cta{align-items:center; margin-top:28px;}
.knowledge-hero-link{display:inline-flex; align-items:center; gap:8px; padding:13px 10px; color:var(--ink); font-size:14px; font-weight:600;}
.knowledge-hero-link span{transition:transform .18s;}
.knowledge-hero-link:hover span{transform:translateY(3px);}
.knowledge-proof{display:flex; margin-top:36px; padding-top:24px; border-top:1px solid var(--line); max-width:620px;}
.knowledge-proof>span{display:flex; flex-direction:column; min-width:0; padding-right:clamp(18px,2.6vw,38px); color:var(--muted); font-size:10.5px; white-space:nowrap;}
.knowledge-proof>span+span{padding-left:clamp(18px,2.6vw,38px); border-left:1px solid var(--line);}
.knowledge-proof strong{margin-bottom:5px; color:var(--ink); font-size:13px;}
.knowledge-hero-visual{position:relative; min-height:540px; display:grid; place-items:center;}
.knowledge-glow{position:absolute; width:460px; height:460px; border-radius:50%; background:radial-gradient(circle,rgba(216,248,128,.35),rgba(146,233,240,.12) 42%,transparent 70%); filter:blur(8px);}
.knowledge-app{position:relative; z-index:2; width:min(100%,590px); overflow:hidden; border:1px solid rgba(10,33,31,.12); border-radius:25px; background:rgba(255,255,255,.96); box-shadow:0 34px 76px -36px rgba(10,33,31,.42),0 10px 24px -18px rgba(10,33,31,.25); transform:rotate(-.7deg);}
.knowledge-appbar{display:flex; align-items:center; justify-content:space-between; gap:16px; padding:16px 18px; border-bottom:1px solid var(--line);}
.knowledge-app-brand{display:flex; align-items:center; gap:10px;}
.knowledge-app-brand>span:last-child{display:flex; flex-direction:column;}
.knowledge-app-brand strong{font-size:13px; line-height:1.3;}
.knowledge-app-brand small{display:flex; align-items:center; gap:5px; margin-top:2px; color:var(--muted); font-size:9.5px;}
.knowledge-app-brand small i{width:6px; height:6px; border-radius:50%; background:var(--lime-700);}
.knowledge-mark{display:grid; place-items:center; width:34px; height:34px; border-radius:10px; background:var(--ink); color:var(--lime); font-family:var(--serif); font-weight:600;}
.knowledge-private{padding:5px 9px; border-radius:999px; background:var(--sunken); color:var(--muted); font-size:9.5px; font-weight:600;}
.knowledge-workspace{display:grid; grid-template-columns:130px 1fr; min-height:390px;}
.knowledge-sidebar{display:flex; flex-direction:column; gap:5px; padding:20px 13px; border-right:1px solid var(--line); background:color-mix(in srgb,var(--sunken) 58%,white);}
.knowledge-sidebar strong{margin:0 7px 8px; color:var(--muted); font-size:8.5px; letter-spacing:.12em; text-transform:uppercase;}
.knowledge-sidebar span{padding:8px 9px; border-radius:8px; color:var(--muted); font-size:10.5px;}
.knowledge-sidebar .active{background:var(--surface); color:var(--ink); font-weight:600; box-shadow:var(--sh-card);}
.knowledge-conversation{display:flex; flex-direction:column; padding:22px;}
.knowledge-question>span{color:var(--muted); font-size:9px; font-weight:600; text-transform:uppercase; letter-spacing:.1em;}
.knowledge-question p{margin-top:5px; font-size:15px; font-weight:600; line-height:1.4;}
.knowledge-answer{margin-top:18px; padding:16px; border:1px solid var(--line); border-radius:15px; background:var(--sunken);}
.knowledge-answer-head{display:flex; align-items:center; gap:7px; color:var(--muted); font-size:9.5px;}
.knowledge-spark{display:grid; place-items:center; width:20px; height:20px; border-radius:6px; background:var(--ink); color:var(--lime); font-size:9px;}
.knowledge-answer>p{margin-top:12px; color:var(--ink); font-size:12.5px; line-height:1.55;}
.knowledge-answer .src{margin-top:13px;}
.knowledge-answer .src span{background:var(--surface); font-size:9.5px; padding:6px 8px;}
.knowledge-prompt{display:flex; align-items:center; justify-content:space-between; gap:12px; margin-top:auto; padding:9px 9px 9px 13px; border:1px solid var(--line-strong); border-radius:12px; color:var(--muted); font-size:10.5px;}
.knowledge-prompt button{display:grid; place-items:center; width:27px; height:27px; padding:0; border:0; border-radius:8px; background:var(--ink); color:var(--on-dark); font:inherit;}
.knowledge-float{position:absolute; z-index:4; display:flex; align-items:center; border:1px solid rgba(10,33,31,.1); background:rgba(255,255,255,.95); box-shadow:0 16px 36px -22px rgba(10,33,31,.45); backdrop-filter:blur(12px);}
.knowledge-float-sync{left:-24px; bottom:46px; gap:10px; padding:12px 15px; border-radius:15px;}
.knowledge-float-sync>span{display:grid; place-items:center; width:29px; height:29px; border-radius:50%; background:var(--lime); font-weight:700;}
.knowledge-float-sync div{display:flex; flex-direction:column;}
.knowledge-float-sync strong{font-size:11.5px;}
.knowledge-float-sync small{margin-top:2px; color:var(--muted); font-size:9.5px;}
.knowledge-float-cite{top:70px; right:-14px; flex-direction:column; align-items:flex-start; padding:12px 15px; border-radius:14px;}
.knowledge-float-cite strong{font-size:11.5px;}
.knowledge-float-cite span{margin-top:2px; color:var(--muted); font-size:9.5px;}
@media(max-width:1100px){
  .knowledge-hero .grid{gap:48px;}
  .knowledge-float-sync{left:0;}
  .knowledge-float-cite{right:0;}
}
@media(max-width:920px){
  .knowledge-hero{padding-top:110px; text-align:center;}
  .knowledge-hero .grid{grid-template-columns:1fr;}
  .knowledge-hero-copy{margin-inline:auto;}
  .knowledge-hero h1,.knowledge-hero .sub,.knowledge-proof{margin-inline:auto;}
  .knowledge-hero .cta{justify-content:center;}
  .knowledge-hero .eyebrow{justify-content:center;}
  .knowledge-hero-visual{width:min(100%,670px); margin-inline:auto;}
  .knowledge-sidebar{text-align:left;}
  .knowledge-conversation{text-align:left;}
}
@media(max-width:560px){
  .knowledge-hero{padding-top:96px; padding-bottom:72px;}
  .knowledge-hero h1{font-size:clamp(43px,12.5vw,62px);}
  .knowledge-hero h1 em{white-space:normal;}
  .knowledge-hero .sub{font-size:16px;}
  .knowledge-proof{justify-content:center;}
  .knowledge-proof>span{padding-right:12px; font-size:9px; white-space:normal;}
  .knowledge-proof>span+span{padding-left:12px;}
  .knowledge-proof strong{font-size:11.5px;}
  .knowledge-hero-visual{min-height:500px;}
  .knowledge-app{width:calc(100% - 6px); transform:none;}
  .knowledge-workspace{grid-template-columns:1fr; min-height:390px;}
  .knowledge-sidebar{display:none;}
  .knowledge-conversation{padding:18px;}
  .knowledge-float-sync{left:-3px; bottom:8px;}
  .knowledge-float-cite{top:48px; right:-3px;}
}

/* contact */
.contact-layout{display:grid; grid-template-columns:minmax(0,.82fr) minmax(520px,1.18fr); gap:clamp(48px,8vw,110px); align-items:start;}
.contact-intro{position:sticky; top:132px; padding-top:18px;}
.contact-intro h1{font-size:clamp(44px,5.6vw,72px); margin-top:20px; letter-spacing:-.035em; line-height:1;}
.contact-intro>p:not(.eyebrow){max-width:37ch; margin-top:24px; color:var(--muted); font-size:clamp(17px,1.7vw,20px);}
.contact-direct{display:flex; flex-direction:column; gap:3px; margin-top:44px; padding-top:24px; border-top:1px solid var(--line); font-size:15px;}
.contact-direct span{color:var(--muted);}
.contact-direct a{width:max-content; font-weight:600; border-bottom:1px solid var(--line-strong);}
.contact-direct a:hover{border-color:var(--ink);}
.contact-form{display:grid; grid-template-columns:1fr 1fr; gap:22px 18px; padding:clamp(25px,4vw,42px); border:1px solid var(--line); border-radius:24px; background:var(--surface); box-shadow:var(--sh-card);}
.form-field{display:flex; min-width:0; flex-direction:column; gap:8px;}
.form-field-wide{grid-column:1/-1;}
.form-field label{font-size:14px; font-weight:600; color:var(--ink);}
.form-field label span{font-weight:400; color:var(--muted);}
.form-field input,.form-field select,.form-field textarea{width:100%; border:1px solid var(--line-strong); border-radius:12px; background:var(--paper); color:var(--ink); font:inherit; font-size:15.5px; line-height:1.45; transition:border-color .16s,box-shadow .16s,background .16s;}
.form-field input,.form-field select{height:52px; padding:0 15px;}
.form-field textarea{min-height:150px; padding:14px 15px; resize:vertical;}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--muted); opacity:.72;}
.form-field input:hover,.form-field select:hover,.form-field textarea:hover{border-color:var(--muted);}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:0; border-color:var(--ink); background:var(--surface); box-shadow:0 0 0 3px rgb(10 33 31 / .08);}
.select-wrap{position:relative;}
.select-wrap::after{content:""; position:absolute; top:20px; right:18px; width:7px; height:7px; border-right:1.5px solid var(--ink); border-bottom:1.5px solid var(--ink); transform:rotate(45deg); pointer-events:none;}
.form-field select{appearance:none; padding-right:44px; cursor:pointer;}
.form-actions{display:flex; align-items:center; gap:18px; padding-top:4px;}
.form-actions .btn{flex:none; font-family:var(--sans);}
.form-actions p{max-width:31ch; color:var(--muted); font-size:12.5px; line-height:1.5;}
.form-notice{padding:13px 15px; border:1px solid; border-radius:12px; font-size:14px; line-height:1.5;}
.form-notice-success{border-color:#9bb75a; background:#f2f8df; color:#36520d;}
.form-notice-error{border-color:#d9a29b; background:#fff1ef; color:#7d2118;}
.form-honeypot{position:absolute!important; width:1px!important; height:1px!important; overflow:hidden!important; clip:rect(0,0,0,0)!important; white-space:nowrap!important;}
@media(max-width:900px){
  .contact-layout{grid-template-columns:1fr; gap:42px;}
  .contact-intro{position:static; padding-top:0; text-align:center;}
  .contact-intro>p:not(.eyebrow){margin-inline:auto;}
  .contact-direct{align-items:center; max-width:420px; margin-inline:auto;}
}
@media(max-width:580px){
  .contact-form{grid-template-columns:1fr; padding:22px; gap:19px;}
  .form-field{grid-column:1/-1;}
  .form-actions{align-items:stretch; flex-direction:column;}
  .form-actions .btn{justify-content:center;}
}

/* ── app links ── */
.applink{display:inline-flex; align-items:center; gap:7px; margin-top:16px; font-weight:500; border-bottom:1.5px solid var(--lime); padding-bottom:2px; transition:gap .18s;}
.applink:hover{gap:11px;}

/* ── chat mockup ── */
.chat{background:var(--surface); border:1px solid var(--line); border-radius:22px; padding:18px; box-shadow:var(--sh-raised); max-width:420px; margin-inline:auto;}
.chat-head{display:flex; align-items:center; gap:12px; padding-bottom:15px; border-bottom:1px solid var(--line);}
.chat-av{width:40px; height:40px; border-radius:999px; background:var(--ink); color:var(--paper); display:grid; place-items:center; font-weight:600;}
.chat-head .nm{font-weight:600; font-size:15px;}
.chat-head .st{font-size:12.5px; color:var(--muted); display:flex; align-items:center; gap:6px;}
.chat-head .st .dot{width:7px; height:7px; border-radius:999px; background:var(--lime-700);}
.thread{display:flex; flex-direction:column; gap:9px; padding-top:15px;}
.msg{max-width:88%; padding:11px 14px; font-size:14px; line-height:1.42; border-radius:16px;}
.msg.them{align-self:flex-start; background:var(--sunken); border-bottom-left-radius:5px;}
.msg.us{align-self:flex-end; background:var(--ink); color:var(--on-dark); border-bottom-right-radius:5px;}
.msg.sys{align-self:center; background:var(--lime); font-weight:600; font-size:12.5px; border-radius:999px; padding:7px 14px;}

/* ── knowledge Q&A mockup ── */
.qa{background:var(--surface); border:1px solid var(--line); border-radius:22px; padding:24px; box-shadow:var(--sh-card);}
.qa .q{font-weight:600; font-size:16px;}
.qa .ans{margin-top:16px; background:var(--sunken); border-radius:14px; padding:16px; font-size:15px;}
.src{display:flex; flex-wrap:wrap; gap:8px; margin-top:14px;}
.src span{display:inline-flex; align-items:center; gap:7px; font-size:12.5px; background:var(--surface); border:1px solid var(--line); color:var(--muted); padding:6px 12px; border-radius:999px;}
.src svg{color:var(--ink);}

/* ── cards, lists, splits, bands ── */
.card{background:var(--surface); border:1px solid var(--line); border-radius:24px; padding:clamp(24px,3vw,34px); transition:transform .22s var(--ease), box-shadow .22s;}
.card:hover{transform:translateY(-2px); box-shadow:var(--sh-card);}
.icon-tile{width:46px; height:46px; border-radius:12px; background:var(--sunken); display:grid; place-items:center; color:var(--ink);}

.split{display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,5vw,72px); align-items:center;}
@media(max-width:920px){ .split{grid-template-columns:1fr;} }
.split.rev .visual{order:-1;}
@media(max-width:920px){ .split.rev .visual{order:0;} }

.dark{background:var(--ink); color:var(--on-dark); border-radius:32px; padding:clamp(40px,5vw,72px);}
.dark h2{color:var(--on-dark);}
.dark .lead{color:var(--muted-dark); font-size:18px; margin-top:18px; max-width:38ch;}

.stack{display:flex; flex-direction:column; gap:12px;}
.ho{display:flex; align-items:center; justify-content:space-between; gap:16px; background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:18px 20px;}
.ho .co{font-weight:600; font-size:16px;} .ho .de{font-size:13.5px; color:var(--muted); margin-top:2px;}
.pill{font-size:12px; font-weight:600; padding:6px 13px; border-radius:999px; white-space:nowrap; border:1px solid var(--line);}
.pill.lime{background:var(--lime); border-color:transparent; color:var(--ink);}
.pill.ink{background:var(--ink); border-color:transparent; color:var(--on-dark);}
.pill.soft{background:var(--sunken); color:var(--muted);}

/* ── who we are (homepage founders) ── */
.founders{display:grid; grid-template-columns:1fr 1fr; gap:24px; max-width:900px; margin:clamp(36px,5vw,56px) auto 0;}
@media(max-width:860px){ .founders{grid-template-columns:1fr;} }
.founder{display:flex; align-items:flex-start; gap:18px;}
.f-av{width:56px; height:56px; flex:none; border-radius:999px; background:var(--ink); color:var(--paper); display:grid; place-items:center; font-weight:600; font-size:18px;}
.f-name{font-weight:600; font-size:20px;}
.founder p{color:var(--muted); font-size:15px; margin-top:6px;}
.f-line{font-family:var(--serif); font-style:italic; font-size:19px; color:var(--muted); text-align:center; margin-top:clamp(28px,4vw,44px);}

/* ── app duo (homepage: the two apps) ── */
#apps{padding-top:clamp(88px,10vw,140px);}
.appduo{display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:clamp(36px,5vw,56px); align-items:stretch;}
@media(max-width:920px){ .appduo{grid-template-columns:1fr;} }
.appcard{display:flex; flex-direction:column; gap:14px;}
.appcard h3{font-size:clamp(22px,2.4vw,28px);}
.appcard .desc{color:var(--muted); font-size:15.5px; max-width:52ch;}
.appcard .chat,.appcard .qa{margin-top:6px; max-width:none;}
.appcard .applink-row{margin-top:auto; padding-top:8px;}

/* ── layers (homepage idea) ── */
.layers{max-width:820px; margin:clamp(36px,5vw,56px) auto 0; display:flex; flex-direction:column; gap:12px;}
.layer{display:grid; grid-template-columns:120px 1fr; gap:clamp(16px,3vw,28px); align-items:center; background:var(--surface); border:1px solid var(--line); border-radius:20px; padding:20px 26px;}
.layer .ltag{font-size:11.5px; font-weight:600; letter-spacing:.12em; text-transform:uppercase; color:var(--muted);}
.layer h3{font-size:19px;}
.layer p{color:var(--muted); font-size:15px; margin-top:6px;}
.layer.brainlayer{background:var(--ink); border-color:transparent; box-shadow:var(--sh-raised);}
.brainlayer .ltag{color:var(--lime);}
.brainlayer h3{color:var(--on-dark);}
.brainlayer p{color:var(--muted-dark);}
@media(max-width:640px){ .layer{grid-template-columns:1fr; gap:8px; padding:18px 20px;} }

/* ═══ The System — cascade into brain, fan out ═══ */
.sysd-fit{width:100%; overflow:hidden;}
.sysd-stage{width:960px; height:560px; margin-inline:auto; position:relative; transform-origin:top left;}
.sysd-nd{position:absolute; background:var(--ink-800); border:1px solid var(--line-dark); border-radius:16px; padding:12px 14px; transition:border-color .3s, box-shadow .3s;}
.sysd-nd .k{font-size:10px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--muted-dark);}
.sysd-nd .t{font-size:12.5px; margin-top:5px; line-height:1.4; color:var(--on-dark);}
.sysd-nd.src .k{color:var(--lime);}
.sysd-nd.blip{border-color:var(--lime); box-shadow:0 0 0 1px var(--lime), 0 0 22px rgba(216,248,128,.2);}
.sysd-phase{position:absolute; font-size:11px; font-weight:700; letter-spacing:.18em; text-transform:uppercase; color:var(--muted-dark); transform:translateX(-50%); white-space:nowrap;}
.sysd-phase b{color:var(--lime);}
.sysd-brain{position:absolute; transform:translate(-50%,-50%); width:96px; height:96px; border-radius:999px; background:var(--raised); display:grid; place-items:center; transition:box-shadow .3s;}
.sysd-brain::after{content:""; position:absolute; inset:-11px; border-radius:999px; border:1.5px dashed rgba(237,240,231,.35);}
.sysd-brain svg{width:38px; height:38px; color:var(--lime);}
.sysd-brain.flash{box-shadow:0 0 0 3px var(--lime), 0 0 40px rgba(216,248,128,.4);}
.sysd-blbl{position:absolute; transform:translateX(-50%); font-family:var(--serif); font-style:italic; font-size:15px; white-space:nowrap; color:var(--on-dark);}
.sysd-net{position:absolute; inset:0; width:960px; height:560px; pointer-events:none;}
.sysd-pth{fill:none; stroke:rgba(237,240,231,.2); stroke-width:2; stroke-dasharray:5 7;}
.sysd-pulse{fill:var(--lime); filter:drop-shadow(0 0 6px rgba(216,248,128,.9));}

/* ═══ Layer 2 — discovery loop (read → think → conclude) ═══ */
.learn{display:block; width:100%; background:#061512; border:1px solid var(--line-dark); border-radius:24px; padding:clamp(22px,3vw,34px); margin:30px auto 0;}
.learn .hd{display:flex; align-items:center; gap:12px; font-size:11px; font-weight:700; letter-spacing:.18em; text-transform:uppercase; color:var(--lime);}
.learn .radar{position:relative; width:12px; height:12px;}
.learn .radar i{position:absolute; inset:2.5px; border-radius:99px; background:var(--lime);}
.learn .radar::before{content:""; position:absolute; inset:0; border-radius:99px; border:1.5px solid var(--lime); opacity:0; animation:learn-ping 2.4s ease-out infinite;}
@keyframes learn-ping{0%{transform:scale(.5); opacity:.9;}100%{transform:scale(2.3); opacity:0;}}
.learn .rows{margin-top:24px; display:flex; flex-direction:column; gap:14px;}
.learn .row{display:grid; grid-template-columns:1fr 96px 1fr; align-items:center;}
@media(max-width:720px){ .learn .row{grid-template-columns:1fr; gap:8px;} .learn .row .link{display:none;} }
.learn .cell{position:relative; overflow:hidden; background:var(--ink-800); border:1px solid var(--line-dark); border-radius:14px; padding:12px 15px; transition:border-color .4s, box-shadow .4s, opacity .4s;}
.learn .cell .ck{font-size:9.5px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--muted-dark);}
.learn .cell .ct{font-size:13px; margin-top:4px; line-height:1.4; color:var(--muted-dark);}
.learn .row:not(.on) .cell{opacity:.5;}
.learn .cell.pat::after{content:""; position:absolute; top:0; bottom:0; left:-40%; width:34%;
  background:linear-gradient(100deg, transparent, rgba(216,248,128,.13), transparent);}
.learn .row.on .cell.pat::after{animation:learn-scan 1s ease-out 1;}
@keyframes learn-scan{from{left:-40%;}to{left:110%;}}
.learn .row.on .cell.pat{border-color:rgba(216,248,128,.4);}
.learn .row.on .cell.pat .ck{color:var(--lime);}
.learn .row.on .cell.pat .ct{color:var(--on-dark);}
.learn .link{position:relative; height:26px; display:grid; place-items:center;}
.learn .link::before{content:""; position:absolute; left:6px; right:14px; top:50%; border-top:2px dotted rgba(237,240,231,.16);}
.learn .link .mind{position:relative; background:#061512; padding:0 8px; display:grid; place-items:center; min-width:34px; height:26px;}
.learn .link .spark{font-size:17px; color:var(--lime); line-height:1; opacity:.2; transform:scale(.7);}
.learn .row.on .spark{animation:learn-spark 1.3s ease-in-out 1;}
@keyframes learn-spark{
  0%{opacity:.2; transform:scale(.7) rotate(0deg);}
  25%{opacity:1; transform:scale(1.25) rotate(12deg);}
  50%{opacity:.45; transform:scale(.8) rotate(0deg);}
  75%{opacity:1; transform:scale(1.15) rotate(-10deg);}
  100%{opacity:.2; transform:scale(.7) rotate(0deg);}
}
.learn .link .arr{position:absolute; right:2px; top:50%; transform:translateY(-50%);
  width:0; height:0; border-left:8px solid rgba(237,240,231,.22);
  border-top:5.5px solid transparent; border-bottom:5.5px solid transparent; transition:border-left-color .3s 1.35s;}
.learn .row.on .arr{border-left-color:var(--lime);}
.learn .row:not(.on) .arr{transition-delay:0s;}
.learn .cell.act .ck::before{content:"✦ "; color:var(--lime); opacity:0; transition:opacity .3s 1.45s;}
.learn .cell.act .ct{opacity:.35; transform:translateY(3px); transition:opacity .45s 1.4s, transform .45s 1.4s, color .45s 1.4s;}
.learn .row.on .cell.act{border-color:var(--lime); box-shadow:0 0 22px rgba(216,248,128,.14); transition-delay:1.35s;}
.learn .row.on .cell.act .ck::before{opacity:1;}
.learn .row.on .cell.act .ck{color:var(--lime); transition:color .3s 1.35s;}
.learn .row.on .cell.act .ct{opacity:1; transform:none; color:var(--on-dark);}
.learn .row:not(.on) .cell.act, .learn .row:not(.on) .cell.act .ck,
.learn .row:not(.on) .cell.act .ct{transition-delay:0s;}

/* dark band: sec-head lead legibility */
.darkregion .sec-head p{color:var(--muted-dark);}

/* ── steps ── */
.steps{display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:48px;}
@media(max-width:860px){ .steps{grid-template-columns:1fr;} }
.step{border-top:1px solid var(--line-strong); padding-top:20px;}
.step .no{font-family:var(--serif); font-weight:500; font-size:64px; line-height:1; letter-spacing:-0.03em;}
.step h3{font-size:21px; margin-top:12px;}
.step p{color:var(--muted); font-size:15.5px; margin-top:8px; max-width:30ch;}

/* ── testimonial (enable with a real quote) ── */
.quote{max-width:900px; margin-inline:auto; text-align:center;}
.quote blockquote{font-family:var(--serif); font-style:italic; font-weight:400; font-size:clamp(26px,3.6vw,44px); line-height:1.14; margin:0;}
.quote .by{margin-top:24px; color:var(--muted); font-size:14px;}

/* ── security grid ── */
.sec-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-top:44px;}
@media(max-width:860px){ .sec-grid{grid-template-columns:1fr;} }
.sc .icon-tile{margin-bottom:16px;}
.sc .icon-tile .icn{width:22px; height:22px;}
.sc h3{font-size:19px;} .sc p{color:var(--muted); font-size:15px; margin-top:8px;}

/* ── flow diagram (feed it once) ── */
.brain-flow-section{position:relative; padding-block:clamp(76px,9vw,120px); margin-bottom:clamp(48px,6vw,84px); overflow:hidden;}
.brain-flow-section::before{content:""; position:absolute; inset:clamp(24px,4vw,52px) max(20px,calc((100vw - var(--wide))/2)) 0; z-index:-1; border:1px solid var(--line); border-radius:32px; background:radial-gradient(circle at 50% 65%,rgba(216,248,128,.24),transparent 30%),linear-gradient(135deg,var(--surface),var(--sunken));}
.brain-flow-section .sec-head{max-width:760px;}
.flow{display:grid; grid-template-columns:1fr auto 1fr auto 1fr; gap:clamp(10px,1.6vw,18px); align-items:stretch; margin-top:48px;}
@media(max-width:920px){ .flow{grid-template-columns:1fr;} .flow .arrow{transform:rotate(90deg); justify-self:center;} }
.flow .fcard{position:relative; min-height:190px; background:rgba(255,255,255,.88); border:1px solid var(--line); border-radius:22px; padding:26px; box-shadow:var(--sh-card);}
.flow-label{display:block; margin-bottom:20px; color:var(--forest-600); font-size:10.5px; font-weight:700; letter-spacing:.14em; text-transform:uppercase;}
.flow .fcard h3{font-size:18px;}
.flow .fcard p{margin-top:10px; font-size:15px; color:var(--muted);}
.flow .fcard.brain{background:var(--ink); color:var(--on-dark); border-color:transparent; text-align:center; display:flex; flex-direction:column; align-items:center; justify-content:center; overflow:hidden; box-shadow:0 24px 50px -28px rgba(10,33,31,.7);}
.flow .fcard.brain::before{content:""; position:absolute; width:190px; height:190px; border:1px solid rgba(216,248,128,.22); border-radius:50%; box-shadow:0 0 0 28px rgba(216,248,128,.045),0 0 0 58px rgba(216,248,128,.025);}
.flow .fcard.brain .flow-label{position:relative; color:var(--lime);}
.flow .fcard.brain h3{color:var(--on-dark); font-family:var(--serif); font-style:italic; font-weight:400; font-size:22px;}
.brain-pulse{position:relative; width:9px; height:9px; margin-top:20px; border-radius:50%; background:var(--lime); box-shadow:0 0 0 7px rgba(216,248,128,.12),0 0 22px var(--lime);}
.flow-chips{display:flex; flex-wrap:wrap; gap:7px; margin-top:20px;}
.flow-chips span{padding:5px 9px; border-radius:999px; background:var(--sunken); color:var(--muted); font-size:11px; line-height:1;}
.flow .arrow{color:var(--forest-600); display:grid; place-items:center;}
.flow .arrow svg{width:26px; height:26px;}
@media(max-width:920px){.brain-flow-section::before{inset:20px 12px 0;}.flow .fcard{min-height:0;}.flow .fcard.brain{min-height:190px;}}

/* ── roadline ── */
.roadline{text-align:center; max-width:720px; margin-inline:auto;}
.roadline p.big{font-family:var(--serif); font-style:italic; font-size:clamp(24px,3.2vw,38px); line-height:1.2; margin-top:16px;}
.roadline .support{color:var(--muted); font-size:16.5px; margin-top:16px;}
.brain-flow-section .roadline{position:relative; max-width:800px; margin-top:clamp(48px,6vw,76px); padding-top:clamp(36px,4vw,52px);}
.brain-flow-section .roadline::before{content:""; position:absolute; top:0; left:50%; width:min(180px,40%); height:1px; background:var(--line-strong); transform:translateX(-50%);}
.brain-flow-section .roadline p.big{margin-top:0;}

/* ── FAQ (product pages) ── */
.faqs{display:flex; flex-direction:column; gap:10px; margin-top:44px; max-width:780px;}
.faq-item{background:var(--surface); border:1px solid var(--line); border-radius:16px; box-shadow:var(--sh-card); overflow:hidden;}
.faq-item summary{display:flex; align-items:center; justify-content:space-between; gap:24px; padding:20px 22px; cursor:pointer; list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:""; width:9px; height:9px; flex:none; border-right:1.5px solid currentColor; border-bottom:1.5px solid currentColor; transform:rotate(45deg) translate(-2px,2px); transition:transform .22s var(--ease);}
.faq-item[open] summary::after{transform:rotate(225deg) translate(-2px,2px);}
.faq-item h3{font-size:17px; font-weight:600; line-height:1.45; letter-spacing:0;}
.faq-item p{color:var(--muted); font-size:15.5px; max-width:70ch; padding:0 54px 22px 22px;}
.faq-item summary:hover{background:color-mix(in srgb,var(--surface) 70%,var(--sunken));}
.faq-item summary:focus-visible{outline-offset:-3px;}

/* ── final CTA + footer ── */
.darkregion{background:var(--ink); color:var(--on-dark);}
.final{text-align:center; padding-block:clamp(72px,9vw,132px);}
.final h2{color:var(--on-dark); font-size:clamp(36px,4.8vw,64px); letter-spacing:-0.03em;}
.final p{color:var(--muted-dark); font-size:clamp(17px,1.8vw,20px); margin-top:20px; max-width:36ch; margin-inline:auto;}
.final .cta{display:flex; gap:13px; justify-content:center; flex-wrap:wrap; margin-top:32px;}
footer{border-top:1px solid var(--line-dark); padding-block:56px 40px;}
.foot-grid{display:grid; grid-template-columns:1.65fr repeat(3,1fr); gap:32px;}
.footer-logo{display:inline-flex; align-items:center;}
.footer-logo img{display:block; width:100px; height:auto; filter:brightness(0) invert(1);}
.footer-brand p{color:var(--muted-dark); font-size:15px; margin-top:16px; max-width:26ch;}
.fcol h4{font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--muted-dark); margin:0 0 12px; font-weight:600;}
.fcol a{display:block; color:var(--muted-dark); font-size:15px; padding:5px 0;}
.fcol a:hover{color:var(--lime);}
.foot-base{display:flex; align-items:center; justify-content:space-between; gap:16px; margin-top:44px; padding-top:22px; border-top:1px solid var(--line-dark); color:var(--muted-dark); font-size:13.5px; flex-wrap:wrap;}
@media(max-width:900px){.foot-grid{grid-template-columns:1.5fr repeat(2,1fr);}.footer-brand{grid-row:span 2;}}
@media(max-width:620px){.foot-grid{grid-template-columns:1fr 1fr;}.footer-brand{grid-column:1/-1; grid-row:auto; margin-bottom:8px;}}

/* ── reveal on scroll ── */
.reveal{opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease), transform .7s var(--ease);}
.reveal.in{opacity:1; transform:none;}
@media(prefers-reduced-motion:reduce){ *{animation:none!important; transition:none!important;} .reveal{opacity:1; transform:none;} html{scroll-behavior:auto;} }