:root{
  --bg:#050505; --panel:#09090b; --panel-2:#111113;
  --line:#1f1f23; --line-2:#27272a;
  --text:#f4f4f5; --muted:#a1a1aa; --dim:#71717a;
  --accent:#38bdf8; --accent-2:#7dd3fc; --ink:#04121a;
  --ok:#4ade80; --warn:#fbbf24; --err:#f87171;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 -apple-system,BlinkMacSystemFont,'Segoe UI',Inter,Roboto,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.wrap.narrow{max-width:760px}
.ico{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ib{flex:none;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:#0c1a22;border:1px solid #12313f;color:var(--accent)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 16px;border-radius:10px;border:1px solid transparent;background:none;font-size:14px;font-weight:600;white-space:nowrap;transition:background .15s,border-color .15s,transform .1s,color .15s}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:var(--accent-2)}
.btn-ghost{border-color:var(--line-2);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:#3f3f46;background:rgba(255,255,255,.05)}
.btn-text{color:var(--muted)}
.btn-text:hover{color:var(--text)}
.btn-sm{padding:7px 13px;font-size:13px}
.btn-lg{padding:13px 22px;font-size:15px;border-radius:12px}
.linkbtn{background:none;border:0;padding:0;color:var(--muted);font-size:14px}
.linkbtn:hover{color:var(--text)}

/* Nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(5,5,5,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .2s,background .2s}
.nav.scrolled{border-color:var(--line);background:rgba(5,5,5,.88)}
.nav .wrap{display:flex;align-items:center;height:64px;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.04em}
.brand img{width:28px;height:28px;border-radius:7px}
.nav-links{display:flex;align-items:center;gap:24px;margin-right:auto}
.nav-links a{color:var(--muted);font-size:14px;transition:color .15s}
.nav-links a:hover{color:var(--text)}
.nav-actions{display:flex;gap:8px;align-items:center}
.menu-btn{display:none;width:38px;height:38px;border:1px solid var(--line-2);border-radius:10px;background:none;place-items:center}
.menu-only{display:none}

/* Hero */
.hero{position:relative;padding:88px 0 80px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(50% 50% at 75% 0%,rgba(56,189,248,.13),transparent 70%),
    linear-gradient(var(--line) 1px,transparent 1px) 0 0/56px 56px,
    linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/56px 56px;
  -webkit-mask-image:radial-gradient(75% 80% at 50% 10%,#000,transparent);
  mask-image:radial-gradient(75% 80% at 50% 10%,#000,transparent);opacity:.55}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.badge{display:inline-flex;gap:8px;align-items:center;padding:5px 12px;border:1px solid var(--line-2);border-radius:99px;color:var(--muted);font-size:12.5px;background:rgba(255,255,255,.02)}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(56,189,248,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 7px rgba(56,189,248,0)}100%{box-shadow:0 0 0 0 rgba(56,189,248,0)}}
h1{font-size:clamp(34px,5vw,56px);line-height:1.07;letter-spacing:-.035em;margin:20px 0 18px;font-weight:700}
h1 em{font-style:normal;background:linear-gradient(90deg,#7dd3fc,#38bdf8 60%,#818cf8);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--muted);font-size:17px;max-width:560px}
.hero .lead{margin-bottom:28px}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.cta.center{justify-content:center}
.hero-note{margin-top:18px;color:var(--dim);font-size:13px}

/* Chat mock */
.mock{background:var(--panel);border:1px solid var(--line-2);border-radius:16px;overflow:hidden;box-shadow:0 40px 90px -30px rgba(0,0,0,.9),0 0 0 1px rgba(255,255,255,.02) inset}
.mock-bar{display:flex;align-items:center;gap:6px;padding:12px 14px;border-bottom:1px solid var(--line);color:var(--dim);font-size:12px}
.mock-bar i{width:9px;height:9px;border-radius:50%;background:var(--line-2)}
.mock-bar span{margin-left:8px}
.mock-bar .live{margin-left:auto;display:flex;align-items:center;gap:6px}
.mock-bar .live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok)}
.mock-body{padding:18px;display:flex;flex-direction:column;gap:12px;height:340px;overflow:hidden}
.msg{max-width:92%;padding:10px 14px;border-radius:12px;font-size:13.5px;animation:rise .35s ease both}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.user{align-self:flex-end;background:var(--accent);color:var(--ink);font-weight:500;border-bottom-right-radius:4px}
.msg.bot{background:var(--panel-2);border:1px solid var(--line-2);border-bottom-left-radius:4px;min-width:200px}
.msg.bot h4{font-size:13px;margin-bottom:8px}
.msg.bot .meta{color:var(--dim);font-size:11.5px;margin-top:10px}
.dots{display:inline-flex;gap:4px;padding:4px 0}
.dots i{width:6px;height:6px;border-radius:50%;background:var(--dim);animation:blink 1s infinite}
.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}
@keyframes blink{0%,80%,100%{opacity:.3;transform:none}40%{opacity:1;transform:translateY(-3px)}}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:6px;color:var(--muted)}
.checks li{display:flex;gap:8px;animation:rise .35s ease both}
.checks li::before{content:"✓";color:var(--accent);font-weight:700}
.caret{display:inline-block;width:1px;height:1em;background:currentColor;margin-left:1px;vertical-align:-2px;animation:blinkc .8s steps(1) infinite}
@keyframes blinkc{50%{opacity:0}}
.mock-input{display:flex;justify-content:space-between;align-items:center;margin:0 18px 18px;padding:10px 14px;border:1px solid var(--line-2);border-radius:10px;background:var(--bg);color:var(--dim);font-size:13px}
.mock-input b{color:var(--muted)}

/* Trust strip */
.strip{border-block:1px solid var(--line);background:var(--panel)}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:26px 20px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat b{display:block;font-size:26px;letter-spacing:-.02em}
.stat span{color:var(--muted);font-size:13px}

/* Sections */
.section{padding:96px 0}
.section.alt{background:var(--panel);border-block:1px solid var(--line)}
.eyebrow{display:block;color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.09em;text-transform:uppercase;margin-bottom:10px}
h2{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.025em;line-height:1.15;margin-bottom:12px}
.section .lead{margin-bottom:44px;font-size:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:14px;transition:border-color .2s,transform .2s,background .2s}
.card:hover{border-color:#3a3a42;transform:translateY(-3px);background:var(--panel-2)}
.card .ib{margin-bottom:16px}
.card h3{font-size:16px;margin-bottom:6px}
.card p{color:var(--muted);font-size:14px}

/* Tool showcase */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:20px}
.tab{padding:9px 15px;border:1px solid var(--line-2);border-radius:99px;background:none;color:var(--muted);font-size:13.5px;font-weight:600;transition:all .15s}
.tab:hover{color:var(--text);border-color:#3f3f46}
.tab.active{background:var(--text);border-color:var(--text);color:#000}
.showcase{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:stretch}
.sc-copy,.sc-visual{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:28px}
.sc-copy h3{font-size:22px;letter-spacing:-.015em;margin-bottom:10px}
.sc-copy p{color:var(--muted);margin-bottom:18px}
.sc-copy ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;color:var(--muted);font-size:14px}
.sc-copy li{display:flex;gap:10px}
.sc-copy li::before{content:"✓";color:var(--accent);font-weight:700}
.panel{display:none;animation:rise .4s ease both}
.panel.active{display:block}
.sc-visual{display:grid;place-items:center;min-height:320px;background:var(--panel)}
.vis{width:100%;max-width:440px}
.vis-label{display:flex;justify-content:space-between;color:var(--dim);font-size:11.5px;margin-bottom:10px;text-transform:uppercase;letter-spacing:.06em}
.row{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;border:1px solid var(--line-2);border-radius:10px;background:var(--bg);font-size:13px;margin-bottom:8px}
.row span{color:var(--dim)}
.row b{font-weight:600;text-align:right}
.row.in{animation:rise .4s ease both}
.row.in:nth-child(2){animation-delay:.1s}.row.in:nth-child(3){animation-delay:.2s}.row.in:nth-child(4){animation-delay:.3s}.row.in:nth-child(5){animation-delay:.4s}
.pill-ok{color:var(--ok)}
.bar{height:8px;border-radius:99px;background:var(--line-2);overflow:hidden;margin:6px 0 14px}
.bar i{display:block;height:100%;border-radius:99px;background:var(--accent);width:0;animation:grow 1.4s .2s ease forwards}
.bar.big i{background:#52525b;animation:none;width:100%}
@keyframes grow{to{width:5%}}
.sheet{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.sheet i{aspect-ratio:3.5/4.5;border-radius:6px;border:1px solid var(--line-2);background:linear-gradient(#0c1a22,#112a38);display:grid;place-items:center;animation:rise .4s ease both}
.sheet i::after{content:"";width:46%;aspect-ratio:1;border-radius:50%;background:#2a4a5c;box-shadow:0 22px 0 4px #2a4a5c}
.sheet i:nth-child(n+2){animation-delay:.08s}.sheet i:nth-child(n+4){animation-delay:.16s}.sheet i:nth-child(n+6){animation-delay:.24s}
.note{margin-top:14px;color:var(--dim);font-size:12px}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:8px}
.step{position:relative;padding:24px;background:var(--bg);border:1px solid var(--line);border-radius:14px}
.step b{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#0c1a22;border:1px solid #12313f;color:var(--accent);font-size:14px;margin-bottom:14px}
.step h3{font-size:16px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}

/* Platform */
.grid2{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}

/* Chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.chip{padding:8px 14px;border:1px solid var(--line);border-radius:99px;background:var(--panel);color:var(--muted);font-size:13.5px;transition:border-color .15s,color .15s}
.chip:hover{border-color:#3f3f46;color:var(--text)}
.chip.dim{border-style:dashed;color:var(--dim)}

/* FAQ */
details{border-bottom:1px solid var(--line);padding:18px 0}
.narrow h2{margin-bottom:24px}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-weight:400;font-size:20px;line-height:1}
details[open] summary::after{content:"−"}
details p{margin-top:10px;color:var(--muted);font-size:14.5px}

/* CTA + footer */
.cta-band{text-align:center;padding:60px 24px;border:1px solid var(--line-2);border-radius:20px;background:radial-gradient(70% 120% at 50% 0%,rgba(56,189,248,.12),transparent 70%),var(--panel)}
.cta-band .lead{margin:0 auto 26px}
.footer{border-top:1px solid var(--line);padding:30px 0}
.footer .wrap{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.foot-links{display:flex;gap:20px;margin-right:auto;flex-wrap:wrap}
.foot-note{color:var(--dim);font-size:13px}

/* Reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* About modal */
#modalOverlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px;overflow-y:auto;background:rgba(0,0,0,.65);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
#modalOverlay.active{opacity:1;visibility:visible}
.about-modal{width:100%;max-width:680px;max-height:calc(100dvh - 32px);display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line-2);border-radius:16px;box-shadow:0 30px 80px -20px rgba(0,0,0,.9);transform:translateY(8px) scale(.98);transition:transform .2s}
#modalOverlay.active .about-modal{transform:none}
.about-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.about-title{display:flex;align-items:center;gap:10px}
.about-title img{width:24px;height:24px;border-radius:6px}
.about-title h2{margin:0;font-size:16px;letter-spacing:0}
.about-close{width:32px;height:32px;border:0;border-radius:8px;background:none;color:var(--muted);font-size:20px}
.about-close:hover{background:rgba(255,255,255,.06);color:var(--text)}
.about-body{padding:18px 20px;overflow-y:auto;min-height:0}
.about-lead{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.about-item{display:flex;gap:12px;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--bg)}
.about-item h3{font-size:14px;margin-bottom:2px}
.about-item p{font-size:12.5px;line-height:1.45;color:var(--muted)}
.about-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 20px;border-top:1px solid var(--line)}
.about-foot span{color:var(--dim);font-size:12.5px}
.about-foot div{display:flex;gap:8px}

/* Responsive */
@media(max-width:960px){
  .hero{padding:56px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .grid3,.grid2{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .showcase{grid-template-columns:1fr}
  .strip .wrap{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .menu-btn{display:grid}
  .nav .wrap{gap:12px}
  .nav-links{position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:8px 24px 16px;background:rgba(5,5,5,.97);border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a,.nav-links .linkbtn{padding:12px 0;border-bottom:1px solid var(--line);text-align:left}
  .nav-actions{margin-left:auto}
  .menu-only{display:block}
  .hide-md{display:none}
}
@media(max-width:600px){
  .grid3,.grid2,.about-grid{grid-template-columns:1fr}
  .section{padding:64px 0}
  .wrap{padding:0 18px}
  .mock-body{height:360px}
  .hide-sm{display:none}
  .cta .btn-lg{flex:1}
  .about-foot span{display:none}
  .sc-copy,.sc-visual{padding:20px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}