:root{
  --bg:#000;--panel:#0b0b12;--panel2:#11111c;--line:#23233a;
  --pink:#ff2d95;--green:#39ff14;--yellow:#ffe600;--cyan:#00e5ff;--purple:#b026ff;
  --text:#f4f4fb;--muted:#a6a6c0;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
   radial-gradient(600px 400px at 85% -5%,rgba(255,45,149,.18),transparent 70%),
   radial-gradient(600px 500px at -5% 35%,rgba(0,229,255,.12),transparent 70%),
   radial-gradient(700px 500px at 100% 75%,rgba(176,38,255,.14),transparent 70%),
   linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px) 0 0/48px 48px,
   linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px) 0 0/48px 48px}
a{color:var(--cyan)}
img,svg{max-width:100%}
.wrap{width:min(1160px,92vw);margin-inline:auto}
section{padding:96px 0;position:relative}
.eyebrow{font-family:var(--mono);font-size:.8rem;letter-spacing:.18em;text-transform:uppercase;color:var(--green);margin:0 0 14px}
h1,h2,h3{line-height:1.1;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.6rem,6.4vw,5rem);font-weight:800}
h2{font-size:clamp(2rem,4.2vw,3.1rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1em}
.lead{font-size:clamp(1.05rem,1.8vw,1.3rem);color:var(--muted);max-width:60ch}
.grad{background:linear-gradient(90deg,var(--pink),var(--yellow) 50%,var(--green));-webkit-background-clip:text;background-clip:text;color:transparent}
.grad2{background:linear-gradient(90deg,var(--cyan),var(--purple),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.section-head{max-width:760px;margin-bottom:48px}

/* nav */
header.nav{position:sticky;top:0;z-index:50;background:rgba(0,0,0,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:68px}
.brand{white-space:nowrap;display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;font-weight:800;letter-spacing:-.01em}
.brand .logo{width:38px;height:38px;flex:none}
.brand small{display:block;font-weight:500;font-size:.68rem;letter-spacing:.2em;color:var(--muted);text-transform:uppercase;margin-top:-2px}
.nav ul{display:flex;gap:4px;list-style:none;margin:0 0 0 auto;padding:0}
.nav ul a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:999px;font-size:.93rem;transition:.2s}
.nav ul a:hover{color:var(--text);background:rgba(255,255,255,.07)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:999px;font-weight:700;text-decoration:none;font-size:1rem;border:2px solid transparent;transition:transform .2s,box-shadow .2s;cursor:pointer}
.btn:hover{transform:translateY(-2px)}
.btn-pink{background:var(--pink);color:#000;box-shadow:0 0 24px rgba(255,45,149,.55)}
.btn-pink:hover{box-shadow:0 0 38px rgba(255,45,149,.85)}
.btn-green{background:var(--green);color:#000;box-shadow:0 0 24px rgba(57,255,20,.45)}
.btn-green:hover{box-shadow:0 0 38px rgba(57,255,20,.8)}
.btn-ghost{border-color:var(--cyan);color:var(--cyan);background:transparent}
.btn-ghost:hover{background:rgba(0,229,255,.1);box-shadow:0 0 22px rgba(0,229,255,.4)}
.btn-login{padding:9px 20px;font-size:.92rem;border-color:var(--yellow);color:var(--yellow);background:transparent;white-space:nowrap}
.btn-login:hover{background:var(--yellow);color:#000;box-shadow:0 0 24px rgba(255,230,0,.6)}
#menu-toggle{display:none}
.burger{display:none;cursor:pointer;margin-left:auto;padding:8px;border:1px solid var(--line);border-radius:10px}
.burger span{display:block;width:22px;height:2px;background:var(--text);margin:5px 0}

/* hero */
.hero{padding:88px 0 72px}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero .lead{margin:20px 0 32px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
.chip{font-family:var(--mono);font-size:.78rem;padding:6px 12px;border-radius:999px;border:1px solid currentColor}
.c-pink{color:var(--pink)}.c-green{color:var(--green)}.c-yellow{color:var(--yellow)}.c-cyan{color:var(--cyan)}.c-purple{color:var(--purple)}
.chat{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 0 0 1px rgba(255,45,149,.25),0 0 60px rgba(176,38,255,.25);position:relative}
.chat .dots{display:flex;gap:6px;margin-bottom:16px}
.chat .dots i{width:11px;height:11px;border-radius:50%;display:block}
.chat .dots i:nth-child(1){background:var(--pink)}.chat .dots i:nth-child(2){background:var(--yellow)}.chat .dots i:nth-child(3){background:var(--green)}
.bubble{padding:12px 16px;border-radius:16px;margin:0 0 12px;max-width:92%;font-size:.97rem}
.bubble.you{background:rgba(0,229,255,.12);border:1px solid rgba(0,229,255,.5);margin-left:auto;border-bottom-right-radius:4px}
.bubble.app{background:rgba(57,255,20,.08);border:1px solid rgba(57,255,20,.45);border-bottom-left-radius:4px}
.bubble.app b{color:var(--green)}
.chat .note{font-family:var(--mono);font-size:.7rem;color:var(--muted);margin:14px 0 0;text-align:center;letter-spacing:.08em}
.typing{display:inline-flex;gap:4px;padding:4px 0}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--green);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.2}40%{opacity:1}}

/* panels */
.panel{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:22px;padding:28px}
.graphic{padding:20px;overflow:hidden}
.graphic svg{display:block;width:100%;height:auto}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plain{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:0 0 40px}
.plain .panel h3{display:flex;align-items:center;gap:10px}
.plain .panel h3 span{width:12px;height:12px;border-radius:50%;display:inline-block}

/* ontology flow */
.flow{display:grid;grid-template-columns:1fr auto repeat(4,1fr);gap:14px;align-items:stretch;margin-top:28px}
.flow .node{border-radius:16px;padding:18px;border:1px solid currentColor;background:rgba(255,255,255,.02)}
.flow .node h4{margin:0 0 4px;font-size:1.02rem;color:var(--text)}
.flow .node p{margin:0;font-size:.88rem;color:var(--muted)}
.flow .arrow{align-self:center;font-size:2rem;color:var(--yellow);text-shadow:0 0 12px var(--yellow)}
.flow .src{box-shadow:0 0 28px rgba(255,230,0,.25)}

/* hosting */
.card{border-radius:24px;padding:34px;background:var(--panel);border:2px solid var(--pink);box-shadow:0 0 34px rgba(255,45,149,.3),inset 0 0 40px rgba(255,45,149,.06);position:relative}
.card.alt{border-color:var(--cyan);box-shadow:0 0 34px rgba(0,229,255,.28),inset 0 0 40px rgba(0,229,255,.06)}
.card .tag{position:absolute;top:-14px;left:28px;background:var(--pink);color:#000;font-weight:800;font-size:.78rem;padding:4px 14px;border-radius:999px;letter-spacing:.06em}
.card.alt .tag{background:var(--cyan)}
.card ul{list-style:none;padding:0;margin:20px 0 0}
.card li{padding:9px 0 9px 32px;position:relative;border-top:1px solid var(--line)}
.card li::before{content:"";position:absolute;left:0;top:15px;width:16px;height:16px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.card li::after{content:"";position:absolute;left:5px;top:19px;width:5px;height:8px;border:solid #000;border-width:0 2px 2px 0;transform:rotate(45deg) scale(.9);transform-origin:center}
.card .icon{width:64px;height:64px;margin-bottom:14px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;position:relative;counter-reset:s;margin:0;padding:0;list-style:none}
.steps::before{content:"";position:absolute;left:5%;right:5%;top:30px;height:3px;background:linear-gradient(90deg,var(--pink),var(--yellow),var(--green),var(--cyan),var(--purple));opacity:.8;box-shadow:0 0 14px rgba(255,230,0,.6)}
.steps li{position:relative;text-align:center;padding:0 6px}
.steps .dot{width:60px;height:60px;border-radius:50%;margin:0 auto 14px;background:#000;border:3px solid var(--c);color:var(--c);display:grid;place-items:center;font-weight:800;font-size:1.3rem;position:relative;box-shadow:0 0 20px var(--c)}
.steps h4{margin:0 0 6px;font-size:1rem}
.steps p{margin:0;font-size:.86rem;color:var(--muted)}
.mini{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:54px}
.mini .panel h3{display:flex;align-items:center;gap:12px}

/* why us */
.tile{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:26px;transition:.25s;position:relative;overflow:hidden}
.tile::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--c)}
.tile:hover{transform:translateY(-4px);border-color:var(--c);box-shadow:0 0 28px color-mix(in srgb,var(--c) 40%,transparent)}
.tile h3{color:var(--c)}
.tile p{color:var(--muted);margin:0}

/* pricing */
.pricing{text-align:center}
.price-box{max-width:780px;margin:0 auto;padding:56px 32px;border-radius:30px;border:2px solid var(--yellow);background:radial-gradient(500px 260px at 50% 0,rgba(255,230,0,.12),transparent 70%),var(--panel);box-shadow:0 0 60px rgba(255,230,0,.22)}
.price{font-size:clamp(2.6rem,7vw,4.6rem);font-weight:900;letter-spacing:-.03em;margin:8px 0 18px;line-height:1.05}
.price-box p{color:var(--muted);max-width:52ch;margin-inline:auto}

/* footer */
footer{border-top:1px solid var(--line);padding:56px 0 28px;background:linear-gradient(180deg,transparent,rgba(255,45,149,.06))}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
footer h4{margin:0 0 14px;font-family:var(--mono);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--yellow)}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin-bottom:8px}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--green)}
footer address{font-style:normal;color:var(--muted)}
.copy{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* svg text */
svg text{font-family:var(--font)}
.svg-mono{font-family:var(--mono)}
.flowline{stroke-dasharray:7 7;animation:dash 1.4s linear infinite}
.flowline.rev{animation-direction:reverse}
@keyframes dash{to{stroke-dashoffset:-28}}
.pulse{animation:pulse 2.6s ease-in-out infinite;transform-box:fill-box;transform-origin:center}
@keyframes pulse{0%,100%{opacity:.55}50%{opacity:1}}

/* login */
.login-page{min-height:100vh;display:grid;place-items:center;padding:30px}
.login-card{max-width:560px;text-align:center;padding:48px 36px;border-radius:28px;border:2px solid var(--cyan);background:var(--panel);box-shadow:0 0 60px rgba(0,229,255,.25),inset 0 0 50px rgba(176,38,255,.08)}
.login-card .logo{width:84px;height:84px;margin:0 auto 20px;display:block}
.login-card h1{font-size:clamp(2rem,6vw,2.8rem)}
.login-card p{color:var(--muted)}
.login-card .cta-row{justify-content:center;margin-top:26px}

/* responsive */
@media (max-width:1020px){
  .hero .wrap{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .flow .arrow{display:none}
  .flow .src{grid-column:1/-1}
  .steps{grid-template-columns:1fr;gap:26px}
  .steps::before{left:29px;right:auto;top:0;bottom:0;width:3px;height:auto}
  .steps li{text-align:left;display:grid;grid-template-columns:60px 1fr;gap:0 18px;padding:0}
  .steps .dot{margin:0;grid-row:span 2}
  .steps h4{align-self:end}
  .foot{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .burger{display:block}
  .nav ul{display:none;position:absolute;left:0;right:0;top:68px;background:rgba(0,0,0,.96);flex-direction:column;padding:12px 4vw 20px;border-bottom:1px solid var(--line);margin:0}
  #menu-toggle:checked~ul{display:flex}
  .nav .btn-login{margin-left:0}
  .nav .wrap{gap:10px}
  .burger{margin-left:auto}
  .two-col,.three-col,.plain,.mini{grid-template-columns:1fr}
}
@media (max-width:560px){
  section{padding:68px 0}
  .brand small{display:none}
  .btn-login{padding:8px 14px;font-size:.85rem}
  .foot{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .card{padding:28px 22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}