:root{
  --bg:#07060d; --fg:#f4f2ff; --mute:#9a96b5; --line:rgba(255,255,255,.09);
  --violet:#7c5cff; --pink:#ff4d8d; --cyan:#3de0ff;
  --grad:linear-gradient(110deg,#a78bff 0%,#ff6aa2 55%,#ffb36a 100%);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--font);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{width:min(1120px,92vw);margin:0 auto}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-r{background:linear-gradient(110deg,#ff6aa2,#ff4d4d);-webkit-background-clip:text;background-clip:text;color:transparent}

/* background */
.aurora{position:fixed;inset:0;z-index:-2;overflow:hidden}
.aurora i{position:absolute;width:55vmax;height:55vmax;border-radius:50%;filter:blur(90px);opacity:.38;animation:drift 22s ease-in-out infinite alternate}
.aurora i:nth-child(1){background:var(--violet);top:-20vmax;left:-12vmax}
.aurora i:nth-child(2){background:var(--pink);bottom:-26vmax;right:-14vmax;animation-duration:28s;opacity:.28}
.aurora i:nth-child(3){background:var(--cyan);top:30vh;left:40vw;width:30vmax;height:30vmax;opacity:.12;animation-duration:34s}
@keyframes drift{to{transform:translate3d(8vmax,6vmax,0) scale(1.15)}}
.grain{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 10%,transparent 70%);mask-image:radial-gradient(ellipse at 50% 30%,#000 10%,transparent 70%)}

/* nav */
.nav{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:50;width:min(980px,94vw);
  display:flex;align-items:center;justify-content:space-between;padding:10px 12px 10px 18px;border-radius:999px;
  background:rgba(14,12,26,.55);border:1px solid var(--line);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:.3s}
.nav.scrolled{background:rgba(10,9,20,.82)}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:.02em}
.brand em{font-style:normal;font-weight:400;font-size:12px;color:var(--mute)}
.nav nav{display:flex;align-items:center;gap:22px;font-size:14px;color:var(--mute)}
.nav nav a:hover{color:var(--fg)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:600;color:#fff;
  background:linear-gradient(110deg,var(--violet),var(--pink));box-shadow:0 8px 30px -8px rgba(255,77,141,.6);transition:transform .25s,box-shadow .25s}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 36px -8px rgba(255,77,141,.8)}
.btn-sm{padding:8px 16px;font-size:14px;color:#fff!important}
.btn-ghost{background:rgba(255,255,255,.06);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{background:rgba(255,255,255,.1);box-shadow:none}

/* hero */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden}
#particles{position:absolute;inset:0;width:100%;height:100%}
.hero-copy{position:relative;z-index:2;width:min(1120px,92vw);margin:0 auto;padding-top:80px;pointer-events:none}
.hero-copy>*{pointer-events:auto}
.hero-copy>*{max-width:560px}
.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;font-size:13px;color:#d6d0ff;
  background:rgba(124,92,255,.14);border:1px solid rgba(124,92,255,.35)}
.dot{width:7px;height:7px;border-radius:50%;background:#4dffb0;box-shadow:0 0 0 0 rgba(77,255,176,.7);animation:ping 2s infinite}
@keyframes ping{70%{box-shadow:0 0 0 9px rgba(77,255,176,0)}100%{box-shadow:0 0 0 0 rgba(77,255,176,0)}}
h1{font-size:clamp(54px,9vw,112px);line-height:1.05;font-weight:800;letter-spacing:-.02em;margin:22px 0 18px;white-space:nowrap}
.flip{display:inline-grid;vertical-align:bottom;position:relative}
.flip b{grid-area:1/1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800;
  animation:flip 6s infinite}
.flip .flip-b{animation-delay:-3s}
@keyframes flip{
  0%{opacity:0;transform:translateY(40%) rotateX(-70deg);filter:blur(10px)}
  8%,42%{opacity:1;transform:none;filter:none}
  50%,100%{opacity:0;transform:translateY(-40%) rotateX(70deg);filter:blur(10px)}
}
.sub{font-size:clamp(17px,2vw,21px);color:var(--mute);margin-bottom:34px}
.cta{display:flex;flex-wrap:wrap;gap:14px}
.scroll-hint{position:absolute;bottom:26px;left:50%;width:22px;height:36px;border:2px solid rgba(255,255,255,.25);border-radius:12px;transform:translateX(-50%);z-index:2}
.scroll-hint span{position:absolute;left:50%;top:7px;width:3px;height:7px;border-radius:2px;background:#fff;transform:translateX(-50%);animation:wheel 1.8s infinite}
@keyframes wheel{to{transform:translate(-50%,12px);opacity:0}}

/* marquee */
.marquee{border-block:1px solid var(--line);background:rgba(255,255,255,.02);overflow:hidden;padding:18px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.track{display:flex;gap:56px;width:max-content;animation:scroll 32s linear infinite}
.track span{font-size:18px;color:var(--mute);white-space:nowrap;display:flex;align-items:center;gap:56px}
.track span::after{content:"♥";color:var(--pink);font-size:12px}
@keyframes scroll{to{transform:translateX(-50%)}}

/* sections */
.section{padding:clamp(80px,12vw,140px) 0}
.eyebrow{font-size:13px;letter-spacing:.28em;color:var(--violet);font-weight:700;margin-bottom:14px}
h2{font-size:clamp(32px,5vw,54px);line-height:1.15;font-weight:800;letter-spacing:-.01em}
.lead{color:var(--mute);font-size:18px;margin-top:16px;max-width:620px}
.lead.center{margin-inline:auto;text-align:center}
.lead strong{color:var(--fg)}
.lead em{font-style:normal;color:var(--fg);font-weight:600}

.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:56px;position:relative}
.step{padding:26px 22px;border-radius:20px;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.015));border:1px solid var(--line);position:relative}
.step .num{font-size:14px;font-weight:700;color:var(--pink);letter-spacing:.1em}
.step h3{font-size:20px;margin:10px 0 8px}
.step p{font-size:14.5px;color:var(--mute)}
.step:not(:last-child)::after{content:"";position:absolute;top:50%;right:-19px;width:20px;height:2px;background:linear-gradient(90deg,var(--violet),transparent)}

/* cards */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:52px}
.card{position:relative;padding:30px;border-radius:22px;background:rgba(255,255,255,.035);border:1px solid var(--line);overflow:hidden}
.card.wide{grid-column:span 2}
.card h3{font-size:21px;margin:18px 0 10px}
.card p{color:var(--mute);font-size:15px;max-width:520px}
.ico{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(124,92,255,.3),rgba(255,77,141,.25));border:1px solid rgba(255,255,255,.12)}
.ico svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
/* spotlight */
.spot::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(255,106,162,.16),transparent 60%)}
.spot::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(300px circle at var(--mx,50%) var(--my,50%),rgba(167,139,255,.9),transparent 60%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.spot:hover::before,.spot:hover::after{opacity:1}
.scan{position:absolute;right:30px;top:30px;width:150px;height:96px;border-radius:12px;border:1px dashed rgba(255,255,255,.2);overflow:hidden;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 2px,transparent 2px 6px)}
.scan::before{content:"";position:absolute;left:24%;top:22%;width:34%;height:56%;border:2px solid #4dffb0;border-radius:6px;box-shadow:0 0 14px rgba(77,255,176,.5)}
.scan::after{content:"person 0.92";position:absolute;left:24%;top:8%;font:10px/1 ui-monospace,Menlo,monospace;color:#4dffb0}
.scan i{position:absolute;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);animation:sweep 2.6s ease-in-out infinite}
@keyframes sweep{0%{top:-4px}100%{top:100%}}
.beat{display:flex;align-items:flex-end;gap:7px;height:44px;margin-top:22px}
.beat i{width:8px;border-radius:4px;background:linear-gradient(var(--cyan),var(--violet));animation:bar 1.3s ease-in-out infinite}
.beat i:nth-child(odd){animation-delay:-.4s}.beat i:nth-child(3n){animation-delay:-.8s}
@keyframes bar{0%,100%{height:20%}50%{height:100%}}

/* stats */
.stats-sec{padding-block:30px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;border-block:1px solid var(--line);padding-block:48px}
.stat{text-align:center}
.stat b{font-size:clamp(44px,6vw,72px);font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stat sup{font-size:20px;color:var(--mute);margin-left:4px;vertical-align:top;position:relative;top:10px}
.stat span{display:block;margin-top:10px;color:var(--mute);font-size:14px}

/* love */
.love{text-align:center}
.love .big{font-size:clamp(72px,16vw,200px);line-height:1;display:flex;justify-content:center;align-items:center;gap:.15em;margin-block:10px 30px}
.love .w{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.love .x{color:var(--mute);font-weight:300;font-size:.5em}
.love .heart{background:linear-gradient(110deg,#ff6aa2,#ff3d6e);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block;animation:beatheart 1.6s ease-in-out infinite;filter:drop-shadow(0 0 28px rgba(255,61,110,.5))}
@keyframes beatheart{0%,100%{transform:scale(1)}15%{transform:scale(1.12)}30%{transform:scale(1)}45%{transform:scale(1.07)}}

/* cta */
.cta-box{position:relative;text-align:center;padding:clamp(40px,7vw,80px) 24px;border-radius:30px;border:1px solid var(--line);overflow:hidden;
  background:radial-gradient(ellipse at 50% 0%,rgba(124,92,255,.28),transparent 65%),rgba(255,255,255,.03)}
.cta-box p{color:var(--mute);margin:16px 0 28px}

.footer{border-top:1px solid var(--line);padding:30px 0;color:var(--mute);font-size:14px}
.footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);filter:blur(6px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1),filter .8s}
.reveal.in{opacity:1;transform:none;filter:none}

@media(max-width:860px){
  .nav nav a:not(.btn){display:none}
  .steps{grid-template-columns:1fr 1fr}.step::after{display:none}
  .grid{grid-template-columns:1fr}.card.wide{grid-column:auto}
  .scan{display:none}
  .stats{grid-template-columns:1fr 1fr;row-gap:36px}
  .hero{align-items:flex-end}
  .hero-copy{padding-bottom:90px}
}
@media(max-width:520px){.steps{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none;filter:none}
  .flip .flip-b{display:none}.flip b{opacity:1}
}

/* ===== vision: versus ===== */
.versus{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:stretch;margin-top:56px}
.side{position:relative;padding:32px 30px;border-radius:24px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.side .tag{display:inline-block;font-size:12px;letter-spacing:.14em;padding:5px 12px;border-radius:999px;border:1px solid var(--line);color:var(--mute)}
.side h3{font-size:23px;margin:16px 0 14px}
.side ul{list-style:none;display:grid;gap:12px}
.side li{position:relative;padding-left:26px;font-size:15.5px;color:var(--mute)}
.side li::before{content:"";position:absolute;left:0;top:.6em;width:12px;height:2px;background:var(--mute);opacity:.6}
.side.before h3{color:#c9c5de}
.side.after{border-color:rgba(167,139,255,.45);background:radial-gradient(ellipse at 20% 0%,rgba(124,92,255,.22),transparent 60%),rgba(255,255,255,.04);box-shadow:0 20px 60px -30px rgba(124,92,255,.7)}
.side.after .tag{border-color:transparent;color:#fff;background:linear-gradient(110deg,var(--violet),var(--pink))}
.side.after li{color:#d9d5f0}
.side.after li::before{height:10px;width:10px;border-radius:50%;top:.5em;background:var(--grad);opacity:1}
.bridge{display:grid;place-items:center;color:var(--pink)}
.bridge svg{animation:nudge 1.6s ease-in-out infinite}
@keyframes nudge{50%{transform:translateX(6px)}}

/* ===== vision: talk ===== */
.talk-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(30px,5vw,70px);align-items:center}
.points{list-style:none;display:grid;gap:18px;margin-top:30px}
.points li{padding-left:18px;border-left:2px solid rgba(167,139,255,.5);color:var(--mute);font-size:15.5px}
.points b{display:block;color:var(--fg);font-size:17px;margin-bottom:2px}
.chat{border-radius:22px;border:1px solid var(--line);background:rgba(12,10,24,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden;box-shadow:0 30px 80px -30px rgba(124,92,255,.55)}
.chat-top{display:flex;align-items:center;gap:7px;padding:14px 18px;border-bottom:1px solid var(--line)}
.chat-top .light{width:10px;height:10px;border-radius:50%;background:#3a3654}
.chat-top .light:nth-child(1){background:#ff5f57}.chat-top .light:nth-child(2){background:#febc2e}.chat-top .light:nth-child(3){background:#28c840}
.chat-top em{font-style:normal;margin-left:10px;font-size:13px;color:var(--mute)}
.chat-body{padding:22px 20px;display:flex;flex-direction:column;gap:14px;height:400px;overflow:hidden}
.msg{max-width:86%;padding:12px 16px;border-radius:18px;font-size:15px;line-height:1.55;animation:pop .45s cubic-bezier(.2,.8,.2,1) both}
.msg.user{align-self:flex-end;background:linear-gradient(110deg,var(--violet),var(--pink));color:#fff;border-bottom-right-radius:6px}
.msg.bot{align-self:flex-start;background:rgba(255,255,255,.07);border:1px solid var(--line);border-bottom-left-radius:6px;color:#e6e3f7}
.msg.bot .shot{display:flex;align-items:center;gap:8px;margin-top:10px;padding:8px 10px;border-radius:10px;background:rgba(0,0,0,.35);font-size:12px;color:var(--cyan);font-family:ui-monospace,Menlo,monospace}
.msg.bot .shot::before{content:"";width:8px;height:8px;border-radius:50%;background:#4dffb0;box-shadow:0 0 8px #4dffb0}
.msg.typing{display:flex;gap:5px;padding:15px 18px}
.msg.typing i{width:7px;height:7px;border-radius:50%;background:var(--mute);animation:dotb 1s infinite}
.msg.typing i:nth-child(2){animation-delay:.15s}.msg.typing i:nth-child(3){animation-delay:.3s}
@keyframes dotb{0%,60%,100%{transform:none;opacity:.4}30%{transform:translateY(-5px);opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(12px) scale(.96)}}
.chat-input{display:flex;align-items:center;justify-content:space-between;margin:0 16px 16px;padding:12px 16px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--mute);font-size:14px}
.chat-input i{width:2px;height:16px;background:var(--pink);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.grid.three{grid-template-columns:repeat(3,1fr)}

@media(max-width:860px){
  .versus{grid-template-columns:1fr}
  .bridge svg{transform:rotate(90deg);animation:none}
  .talk-wrap{grid-template-columns:1fr}
  .grid.three{grid-template-columns:1fr}
  .chat-body{height:360px}
}