/* ============================================================
   NEXUS — landing · design system "Aurora" (charte app mobile)
   Space Grotesk + Plus Jakarta Sans · dark-first
   Violet #9D6BFF · Corail #FF7A4D · Magenta #D072FF · glass + glows
   ============================================================ */
:root{
  --bg:#110B1F; --surface:#1A1330; --surface-2:#241B40;
  --text:#F3EEFF; --dim:#B0A6CE; --mute:#7E749E;
  --primary:#9D6BFF; --primary-press:#8A55F0; --primary-soft:#2A1F4A;
  --accent:#FF7A4D; --accent-soft:#3A2418; --accent2:#D072FF;
  --success:#25C98E; --gold:#F0B92E; --danger:#FF5D6E;
  --border:rgba(255,255,255,.08); --border-str:rgba(255,255,255,.16);
  --glass:rgba(30,22,52,.66);
  --hero-a:#3A2A6E; --hero-b:#241A48; --blob:#6A3FB5;
  --ring:conic-gradient(from 140deg,#9D6BFF,#FF7A4D,#D072FF,#9D6BFF);
  --glow-p:0 12px 40px -6px rgba(157,107,255,.5);
  --glow-a:0 12px 40px -6px rgba(255,122,77,.42);
  --f-display:'Space Grotesk',system-ui,sans-serif;
  --f-body:'Plus Jakarta Sans',system-ui,sans-serif;
  --r:14px; --r-lg:20px; --pill:999px;
  --maxw:1180px; --gut:clamp(20px,5vw,60px);
  --ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--f-body);background:var(--bg);color:var(--text);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--primary);color:#fff}
a{color:inherit;text-decoration:none}svg,img{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;letter-spacing:-.02em;line-height:1.06;color:var(--text)}
.eyebrow{font-family:var(--f-body);font-weight:700;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--primary);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:'';width:20px;height:2px;background:var(--accent);border-radius:2px}

/* ambient blobs */
.amb{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.amb i{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.amb .a1{width:600px;height:600px;background:var(--blob);top:-200px;right:-160px}
.amb .a2{width:440px;height:440px;background:#5A2E9E;bottom:-160px;left:-120px}
.amb .a3{width:300px;height:300px;background:var(--accent);opacity:.14;top:40%;left:50%}

/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:100;background:rgba(17,11,31,.7);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav__in{max-width:var(--maxw);margin-inline:auto;padding:13px var(--gut);display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:11px}
.logo img{width:34px;height:34px}
.logo b{font-family:var(--f-display);font-weight:700;font-size:21px;letter-spacing:-.01em}
.nav__l{display:flex;gap:28px;align-items:center}
.nav__l a{font-size:14px;font-weight:600;color:var(--dim)}
.nav__l a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--f-body);font-weight:700;font-size:15px;padding:12px 22px;border-radius:var(--r);cursor:pointer;border:none;transition:transform .2s var(--ease),box-shadow .25s,background .2s}
.btn--primary{background:var(--primary);color:#fff;box-shadow:var(--glow-p)}
.btn--primary:hover{background:var(--primary-press);transform:translateY(-2px)}
.btn--glass{background:var(--glass);color:var(--text);border:1px solid var(--border-str);backdrop-filter:blur(12px)}
.btn--glass:hover{border-color:var(--primary);transform:translateY(-2px)}
.btn svg{width:16px;height:16px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:6px}
.burger span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;border-radius:2px}

/* hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:130px 0 70px}
.hero__in{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center;width:100%}
.hero h1{font-size:clamp(44px,7vw,86px);font-weight:700}
.hero h1 .g{background:var(--ring);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero__sub{margin-top:24px;max-width:46ch;font-size:clamp(16px,1.6vw,19px);color:var(--dim)}
.hero__cta{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero__chips{margin-top:40px;display:flex;gap:10px;flex-wrap:wrap}
.chip{font-size:12.5px;font-weight:600;padding:8px 14px;border-radius:var(--pill);background:var(--surface-2);border:1px solid var(--border);color:var(--dim)}
.chip b{color:var(--text)}

/* radar signature */
.radar{position:relative;aspect-ratio:1;max-width:440px;margin:0 auto;width:100%}
.radar__ring{position:absolute;inset:0;border-radius:50%;padding:3px;background:var(--ring);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.9;animation:spin 14s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.radar__face{position:absolute;inset:14px;border-radius:50%;background:radial-gradient(circle at 50% 45%,rgba(157,107,255,.16),transparent 70%),var(--surface);border:1px solid var(--border)}
.radar svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.radar .rr{fill:none;stroke:var(--border-str);stroke-width:1}
.radar .cr{stroke:var(--border);stroke-width:1}
.radar .sweep{transform-origin:50% 50%;animation:spin 4s linear infinite}
.radar .node{fill:var(--primary)}
.radar .node.c{fill:var(--accent)}
.radar .node.p{animation:pl 2.4s ease-in-out infinite}
.radar .node.p2{animation:pl 2.4s ease-in-out .9s infinite}
@keyframes pl{0%,100%{opacity:.35}50%{opacity:1}}
.radar .halo{fill:none;stroke:var(--primary);stroke-width:1.5;animation:halo 3s ease-out infinite}
@keyframes halo{0%{r:8;opacity:.9}100%{r:70;opacity:0}}
.radar .me{fill:#fff;filter:drop-shadow(0 0 10px var(--primary))}

/* section */
.sec{padding:clamp(70px,9vw,120px) 0;position:relative}
.sh{max-width:640px;margin-bottom:52px}
.sh h2{font-size:clamp(30px,4.6vw,52px)}
.sh p{margin-top:14px;color:var(--dim);font-size:16px}

/* glass cards */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.gc{background:var(--glass);backdrop-filter:blur(14px);border:1px solid var(--border-str);border-radius:var(--r-lg);padding:34px;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;position:relative;overflow:hidden}
.gc:hover{transform:translateY(-5px);border-color:var(--primary);box-shadow:var(--glow-p)}
.gc .i{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;margin-bottom:20px;background:var(--primary-soft)}
.gc .i svg{width:26px;height:26px;stroke:var(--primary);fill:none;stroke-width:1.8}
.gc.accent .i{background:var(--accent-soft)}.gc.accent .i svg{stroke:var(--accent)}
.gc h3{font-size:23px}
.gc p{margin-top:10px;color:var(--dim);font-size:14.5px}

/* proof band */
.band{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bd{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:30px}
.bd .n{font-family:var(--f-display);font-weight:700;font-size:clamp(30px,4vw,46px);background:var(--ring);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.bd .l{font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--mute);margin-top:10px}

/* moments */
.moments{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.chat{display:flex;flex-direction:column;gap:12px}
.bub{max-width:80%;padding:14px 18px;font-size:14.5px;line-height:1.4}
.bub.in{align-self:flex-start;background:var(--surface-2);border:1px solid var(--border);border-radius:18px 18px 18px 5px}
.bub.out{align-self:flex-end;background:var(--primary);color:#fff;border-radius:18px 18px 5px 18px;box-shadow:var(--glow-p)}
.bub small{display:block;font-size:10.5px;margin-top:5px;opacity:.7}
.moments ul{list-style:none}
.moments li{padding:16px 0;border-top:1px solid var(--border);display:flex;gap:13px}
.moments li .d{width:10px;height:10px;border-radius:50%;background:var(--ring);flex:none;margin-top:6px}
.moments li b{font-family:var(--f-display);font-size:16px}
.moments li span{display:block;color:var(--dim);font-size:14px;margin-top:2px}

/* CTA */
.cta{border-radius:28px;padding:clamp(46px,7vw,88px);text-align:center;position:relative;overflow:hidden;background:linear-gradient(150deg,var(--hero-a),var(--hero-b));border:1px solid var(--border-str)}
.cta::after{content:'';position:absolute;width:360px;height:360px;background:var(--ring);filter:blur(90px);opacity:.3;top:-120px;left:50%;transform:translateX(-50%)}
.cta>*{position:relative;z-index:1}
.cta h2{font-size:clamp(32px,5.4vw,62px)}
.cta h2 .g{background:var(--ring);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.cta p{margin:18px auto 0;max-width:42ch;color:var(--dim);font-size:17px}
.cta .row{margin-top:32px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* download section */
.dl{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;background:var(--glass);backdrop-filter:blur(14px);border:1px solid var(--border-str);border-radius:var(--r-lg);padding:clamp(30px,5vw,54px)}
.dl__txt h2{font-size:clamp(26px,3.6vw,40px);margin-top:12px}
.dl__hint{margin-top:12px;color:var(--dim);font-size:15px}
.dl__hint b{color:var(--primary)}
.dl__badges{display:flex;flex-direction:column;gap:14px}
.store{display:flex;align-items:center;gap:13px;background:#0C0717;color:#fff;padding:12px 22px;border-radius:14px;min-width:220px;border:2px solid var(--border-str);transition:transform .2s var(--ease),box-shadow .25s,border-color .2s}
.store svg{width:26px;height:26px;flex:none}
.store span{display:flex;flex-direction:column;line-height:1.1}
.store small{font-size:10.5px;opacity:.85}
.store b{font-family:var(--f-display);font-size:18px;font-weight:700}
.store:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:var(--glow-p)}
.store.detected{border-color:var(--primary);box-shadow:var(--glow-p)}
.store.dimmed{opacity:.45}

/* footer */
.foot{background:#0C0717;border-top:1px solid var(--border);padding:60px 0 40px;margin-top:90px}
.foot__logo{display:inline-block;margin-bottom:26px}
.foot__logo img{height:70px}
.foot__grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;align-items:flex-end}
.foot p{color:var(--mute);font-size:14px;max-width:34ch}
.foot a.back{color:var(--dim);font-size:14px;font-weight:600}.foot a.back:hover{color:var(--text)}
.foot__bar{margin-top:36px;padding-top:22px;border-top:1px solid var(--border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.foot .meta{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .nav__l{display:none}.burger{display:block}
  .hero__in{grid-template-columns:1fr;gap:40px}.radar{max-width:320px;order:-1}
  .grid{grid-template-columns:1fr}
  .band{grid-template-columns:1fr}
  .moments{grid-template-columns:1fr;gap:40px}
  .dl{grid-template-columns:1fr;gap:26px}
}
@media(max-width:520px){.store{min-width:0;width:100%}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}