/* ============================================================
   Stratos Aether . Product landing  (aether.stratosagency.ai)
   Stratos design system: deep ink + mint + gold, Geist.
   Dark, textured, alive. Grid + grain + glow, like stratosagency.ai.
   ============================================================ */

@font-face { font-family:'Geist';      font-weight:100 900; font-style:normal; font-display:swap; src:url('assets/fonts/Geist.woff2') format('woff2'); }
@font-face { font-family:'Geist';      font-weight:100 900; font-style:normal; font-display:swap; src:url('assets/fonts/Geist-ext.woff2') format('woff2'); unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family:'Geist Mono'; font-weight:100 900; font-style:normal; font-display:swap; src:url('assets/fonts/GeistMono.woff2') format('woff2'); }

:root {
  --bg-page:#050709; --bg-stage:#0B0F12; --bg-card:#11171B; --bg-card-2:#161E23; --bg-elevated:#1B252B;
  --line:rgba(255,255,255,0.06); --line-2:rgba(255,255,255,0.10); --line-strong:rgba(255,255,255,0.16);
  --tint-1:rgba(255,255,255,0.02); --tint-2:rgba(255,255,255,0.04); --tint-3:rgba(255,255,255,0.06);
  --fg:#F2F5F4; --fg-soft:rgba(242,245,244,0.74); --fg-mute:rgba(242,245,244,0.50); --fg-dim:rgba(242,245,244,0.32);
  --mint:#7FFFB0; --mint-strong:#5BFF9A; --mint-soft:rgba(127,255,176,0.14); --mint-glow:rgba(127,255,176,0.32); --mint-ink:#062B14;
  --teal:#45777D; --gold:#CDB06A; --gold-soft:rgba(205,176,106,0.20); --gold-glow:rgba(205,176,106,0.40);
  --grid:rgba(127,255,176,0.045);
  --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:24px; --r-2xl:28px; --r-pill:999px;
  --shadow-card:0 1px 0 rgba(255,255,255,0.04) inset, 0 24px 60px -32px rgba(0,0,0,0.65);
  --shadow-pop:0 40px 90px -32px rgba(0,0,0,0.78);
  --font:'Geist','Inter',system-ui,-apple-system,sans-serif;
  --mono:'Geist Mono',ui-monospace,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  --maxw:1140px;
}

* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  margin:0; background:var(--bg-page); color:var(--fg); font-family:var(--font);
  letter-spacing:-0.005em; font-feature-settings:"ss01","cv11"; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden; position:relative;
}
a { color:inherit; text-decoration:none; }
h1,h2,h3,h4 { margin:0; font-weight:600; letter-spacing:-0.025em; line-height:1.06; }
p { margin:0; }
img { max-width:100%; display:block; }
::selection { background:var(--mint); color:var(--mint-ink); }
::-webkit-scrollbar { width:10px; height:10px; }
::-webkit-scrollbar-thumb { background:var(--line-2); border-radius:999px; border:2px solid transparent; background-clip:padding-box; }
::-webkit-scrollbar-thumb:hover { background:var(--mint); }

/* ---- page texture: mint grid + grain, faded toward the bottom ---- */
body::before {
  content:""; position:fixed; inset:0; z-index:-3; pointer-events:none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 60px 60px; background-position:center top;
  -webkit-mask-image: radial-gradient(130% 90% at 50% -6%, #000 0%, rgba(0,0,0,0.55) 45%, transparent 78%);
  mask-image: radial-gradient(130% 90% at 50% -6%, #000 0%, rgba(0,0,0,0.55) 45%, transparent 78%);
}
body::after { /* film grain */
  content:""; position:fixed; inset:0; z-index:-2; pointer-events:none; opacity:0.045; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='7'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size:220px 220px;
}

.wrap { max-width:var(--maxw); margin:0 auto; padding:0 24px; }
.eyebrow { display:inline-flex; align-items:center; gap:8px; font-family:var(--mono); font-size:11px; letter-spacing:0.16em; text-transform:uppercase; color:var(--mint); }
.eyebrow::before { content:""; width:18px; height:1px; background:linear-gradient(90deg, var(--mint), transparent); }
.eyebrow.gold { color:var(--gold); } .eyebrow.gold::before { background:linear-gradient(90deg, var(--gold), transparent); }
.eyebrow.plain::before { display:none; }
.mono { font-family:var(--mono); }

/* ---- buttons ---- */
.btn { position:relative; display:inline-flex; align-items:center; justify-content:center; gap:8px; height:46px; padding:0 22px; border-radius:var(--r-pill);
  font-family:var(--font); font-weight:500; font-size:14px; letter-spacing:-0.005em; border:1px solid transparent; cursor:pointer; overflow:hidden;
  transition:transform .15s var(--ease), background .18s ease, color .18s ease, border-color .18s ease, box-shadow .25s ease; white-space:nowrap; }
.btn:active { transform:translateY(1px) scale(.99); }
.btn.sm { height:38px; padding:0 16px; font-size:13px; }
.btn.primary { background:var(--mint); color:var(--mint-ink); box-shadow:0 0 0 1px rgba(127,255,176,0.22), 0 16px 36px -12px var(--mint-glow); }
.btn.primary:hover { background:var(--mint-strong); box-shadow:0 0 0 1px rgba(127,255,176,0.36), 0 20px 46px -10px var(--mint-glow); }
/* shimmer sweep, like stratosagency.ai shiny-cta */
.btn.primary::after { content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none;
  background:linear-gradient(115deg, transparent 30%, rgba(255,255,255,0.55) 50%, transparent 70%);
  transform:translateX(-120%); }
.btn.primary:hover::after { animation:shine 0.9s var(--ease); }
@keyframes shine { to { transform:translateX(120%); } }
.btn.ghost { background:var(--tint-2); color:var(--fg); border-color:var(--line-2); }
.btn.ghost:hover { background:var(--tint-3); border-color:var(--line-strong); }
.btn svg { width:16px; height:16px; }

.chip { display:inline-flex; align-items:center; gap:7px; height:30px; padding:0 13px; border-radius:var(--r-pill);
  background:var(--tint-2); border:1px solid var(--line); font-size:12.5px; color:var(--fg-soft); }
.chip .dot { width:7px; height:7px; border-radius:50%; background:var(--mint); box-shadow:0 0 8px var(--mint-glow); }

/* ---- nav ---- */
.nav { position:fixed; top:0; left:0; right:0; z-index:50; height:64px; display:flex; align-items:center;
  transition:background .25s ease, border-color .25s ease, backdrop-filter .25s ease; border-bottom:1px solid transparent; }
.nav.scrolled { background:color-mix(in srgb, var(--bg-page) 76%, transparent); backdrop-filter:blur(14px); border-bottom-color:var(--line); }
.nav .wrap { display:flex; align-items:center; gap:24px; width:100%; }
.brand { display:flex; align-items:center; gap:10px; font-weight:600; font-size:15px; letter-spacing:-0.02em; }
.brand img { width:26px; height:26px; filter:drop-shadow(0 2px 10px var(--mint-glow)); }
.brand b { color:var(--mint); font-weight:600; }
.nav-links { display:flex; gap:4px; margin-left:18px; }
.nav-links a { font-size:13.5px; color:var(--fg-soft); padding:8px 12px; border-radius:10px; transition:color .15s ease, background .15s ease; }
.nav-links a:hover { color:var(--fg); background:var(--tint-2); }
.nav .spacer { flex:1; }
.nav-burger { display:none; width:40px; height:40px; border:0; background:none; color:var(--fg); cursor:pointer; border-radius:10px; }

/* ---- hero ---- */
.hero { position:relative; padding:160px 0 96px; overflow:hidden; isolation:isolate; }
#embers { position:absolute; inset:0; z-index:-1; pointer-events:none; }
.hero-floor { /* perspective grid receding into the page, behind the hero */
  position:absolute; left:-30%; right:-30%; top:30%; bottom:-40%; z-index:-2; pointer-events:none;
  background-image:
    linear-gradient(rgba(127,255,176,0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127,255,176,0.10) 1px, transparent 1px);
  background-size:54px 54px;
  transform:perspective(680px) rotateX(62deg) scale(1.7); transform-origin:50% 0;
  -webkit-mask-image:radial-gradient(60% 80% at 50% 35%, #000, transparent 75%);
  mask-image:radial-gradient(60% 80% at 50% 35%, #000, transparent 75%);
  opacity:.55;
}
.hero-glow { position:absolute; inset:0; z-index:-2; pointer-events:none;
  background:
    radial-gradient(50% 42% at 76% 6%, rgba(69,119,125,0.26), transparent 62%),
    radial-gradient(44% 36% at 16% 0%, rgba(127,255,176,0.10), transparent 62%); }
.hero::after { /* vignette + bottom fade (stratos hero-overlay technique) */
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background:radial-gradient(88% 78% at 50% 42%, transparent 46%, rgba(5,7,9,0.45) 100%), linear-gradient(rgba(5,7,9,0), rgba(5,7,9,0.55) 62%, var(--bg-page) 94%); }
.hero-grid { display:grid; grid-template-columns:1.04fr 0.96fr; gap:48px; align-items:center; }
.hero h1 { font-size:clamp(40px, 5.8vw, 70px); margin:18px 0 0; letter-spacing:-0.03em; }
.hero h1 .accent { background:linear-gradient(135deg, var(--mint) 0%, color-mix(in srgb, var(--mint) 45%, var(--gold)) 100%); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.hero .lede { color:var(--fg-soft); font-size:clamp(15px,1.55vw,18px); line-height:1.62; max-width:548px; margin-top:22px; }
.hero .cta-row { display:flex; gap:12px; margin-top:32px; flex-wrap:wrap; }
.trust-row { display:flex; gap:9px; flex-wrap:wrap; margin-top:36px; }

/* hero product mock */
.stage-frame { position:relative; background:var(--bg-stage); border:1px solid var(--line-2); border-radius:var(--r-2xl); box-shadow:var(--shadow-pop); overflow:hidden; }
.stage-frame::before { content:""; position:absolute; inset:0; pointer-events:none; z-index:3;
  background:radial-gradient(60% 50% at 6% 4%, rgba(69,119,125,0.20), transparent 60%), radial-gradient(46% 40% at 96% 0%, rgba(127,255,176,0.09), transparent 64%); }
.stage-frame .bar { display:flex; align-items:center; gap:7px; padding:11px 14px; border-bottom:1px solid var(--line); }
.stage-frame .bar i { width:9px; height:9px; border-radius:50%; background:var(--line-strong); display:block; }
.mock { display:flex; height:330px; font-size:12px; }
.mock-rail { width:150px; flex-shrink:0; border-right:1px solid var(--line); padding:14px 10px; background:var(--bg-stage); }
.mock-brand { display:flex; align-items:center; gap:8px; font-weight:600; font-size:12.5px; margin-bottom:12px; }
.mock-brand img { width:18px; height:18px; }
.mock-brand b { color:var(--mint); }
.mock-li { display:flex; align-items:center; gap:8px; height:28px; padding:0 9px; border-radius:8px; color:var(--fg-soft); }
.mock-li.on { background:var(--mint-soft); color:var(--mint); }
.mock-main { flex:1; display:flex; flex-direction:column; min-width:0; }
.mock-msgs { flex:1; padding:16px; display:flex; flex-direction:column; gap:11px; overflow:hidden; }
.mock-u { align-self:flex-end; background:var(--bg-card-2); border:1px solid var(--line-2); border-radius:13px 13px 3px 13px; padding:8px 11px; max-width:78%; }
.mock-a { align-self:flex-start; background:var(--bg-card); border:1px solid var(--line-2); border-radius:13px 13px 13px 3px; padding:10px 12px; max-width:88%; box-shadow:var(--shadow-card); }
.mock-a b { color:var(--mint); }
.mock-tool { margin-top:8px; border:1px solid var(--line-2); border-radius:9px; background:var(--tint-1); padding:7px 9px; display:flex; align-items:center; gap:7px; color:var(--fg-mute); font-family:var(--mono); font-size:10px; }
.mock-tool .d { width:6px; height:6px; border-radius:50%; background:var(--mint); box-shadow:0 0 6px var(--mint-glow); }
.mock-comp { margin:0 16px 16px; border:1px solid var(--line-2); border-radius:14px; background:var(--bg-card); padding:9px 10px; display:flex; align-items:center; gap:8px; box-shadow:var(--shadow-card); }
.mock-comp .ph { flex:1; color:var(--fg-dim); }
.mock-send { width:30px; height:30px; border-radius:9px; background:var(--mint); color:var(--mint-ink); display:grid; place-items:center; box-shadow:0 6px 16px -8px var(--mint-glow); }
.mock-send svg { width:14px; height:14px; }

/* ---- stat band ---- */
.statband { border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:linear-gradient(180deg, var(--tint-1), transparent); }
.statband .wrap { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; padding:34px 24px; }
.stat { display:flex; flex-direction:column; gap:5px; }
.stat .n { font-size:30px; font-weight:600; letter-spacing:-0.03em; }
.stat .n b { color:var(--mint); font-weight:600; }
.stat .l { color:var(--fg-mute); font-size:13px; }

/* ---- sections ---- */
section { position:relative; padding:96px 0; }
.sec-head { max-width:680px; margin-bottom:44px; }
.sec-head h2 { font-size:clamp(28px,3.5vw,42px); margin-top:14px; }
.sec-head p { color:var(--fg-mute); font-size:16px; line-height:1.62; margin-top:16px; }
.center { text-align:center; margin-left:auto; margin-right:auto; }
.glow-top::before { content:""; position:absolute; left:0; right:0; top:0; height:340px; pointer-events:none; z-index:-1;
  background:radial-gradient(46% 100% at 50% 0%, rgba(127,255,176,0.05), transparent 70%); }

/* feature grid */
.cards { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.card { position:relative; background:var(--bg-card); border:1px solid var(--line); border-radius:var(--r-lg); padding:22px; overflow:hidden;
  transition:transform .35s var(--ease), border-color .25s ease, box-shadow .35s ease; }
.card::before { content:""; position:absolute; inset:0; pointer-events:none; background:radial-gradient(120% 100% at 0% 0%, rgba(127,255,176,0.05), transparent 55%); }
.card.warm::before { background:radial-gradient(120% 100% at 100% 0%, rgba(205,176,106,0.07), transparent 55%); }
.card:hover { transform:translateY(-3px); border-color:var(--line-2); box-shadow:var(--shadow-pop); }
.card > * { position:relative; }
.card .ic { width:42px; height:42px; border-radius:12px; display:grid; place-items:center; background:var(--mint-soft); color:var(--mint); margin-bottom:14px; }
.card.warm .ic { background:var(--gold-soft); color:var(--gold); }
.card h3 { font-size:16px; }
.card p { color:var(--fg-mute); font-size:13.5px; line-height:1.55; margin-top:7px; }
.card .ic svg { width:20px; height:20px; }

/* problem / solution split */
.split { display:grid; grid-template-columns:1fr 1fr; gap:22px; }
.panel { position:relative; background:var(--bg-card); border:1px solid var(--line); border-radius:var(--r-lg); padding:28px; overflow:hidden; }
.panel::before { content:""; position:absolute; inset:0; pointer-events:none; background:radial-gradient(120% 90% at 100% 0%, rgba(127,255,176,0.05), transparent 55%); }
.panel.dim::before { background:none; }
.panel > * { position:relative; }
.panel .eyebrow { margin-bottom:12px; }
.panel h3 { font-size:21px; }
.panel ul { list-style:none; padding:0; margin:16px 0 0; }
.panel li { display:flex; gap:11px; padding:10px 0; border-top:1px solid var(--line); color:var(--fg-soft); font-size:14px; line-height:1.5; }
.panel li:first-child { border-top:0; }
.panel li .b { color:var(--mint); flex-shrink:0; margin-top:1px; font-family:var(--mono); }
.panel.dim li { color:var(--fg-mute); } .panel.dim li .b { color:var(--fg-dim); }

/* how it works steps */
.steps { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-bottom:26px; }
.step { position:relative; background:var(--bg-card); border:1px solid var(--line); border-radius:var(--r-lg); padding:24px; overflow:hidden; }
.step::before { content:""; position:absolute; inset:0; pointer-events:none; background:radial-gradient(120% 100% at 0% 0%, rgba(127,255,176,0.05), transparent 55%); }
.step > * { position:relative; }
.step .n { font-family:var(--mono); font-size:12px; color:var(--mint); letter-spacing:0.1em; }
.step .ic { width:40px; height:40px; border-radius:11px; display:grid; place-items:center; background:var(--mint-soft); color:var(--mint); margin:12px 0 14px; }
.step .ic svg { width:19px; height:19px; }
.step h3 { font-size:17px; }
.step p { color:var(--fg-mute); font-size:13.5px; line-height:1.55; margin-top:8px; }
.shots { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.shot { position:relative; border:1px solid var(--line-2); border-radius:var(--r-lg); overflow:hidden; background:var(--bg-stage); box-shadow:var(--shadow-card); }
.shot img { width:100%; display:block; }
.shot .cap { padding:12px 16px; border-top:1px solid var(--line); color:var(--fg-mute); font-size:12.5px; }

/* security */
.secgrid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.secitem { position:relative; padding:22px; border:1px solid var(--line); border-radius:var(--r-md); background:var(--tint-1); overflow:hidden; }
.secitem .ic { color:var(--mint); margin-bottom:11px; }
.secitem .ic svg { width:22px; height:22px; }
.secitem h4 { font-size:15px; }
.secitem p { color:var(--fg-mute); font-size:12.5px; line-height:1.5; margin-top:7px; }

/* verticals */
.verticals { display:flex; gap:12px; flex-wrap:wrap; justify-content:center; }
.vert { padding:11px 20px; border:1px solid var(--line-2); border-radius:var(--r-pill); color:var(--fg-soft); font-size:14.5px; background:var(--tint-1); }
.vert b { color:var(--mint); font-family:var(--mono); margin-right:3px; }

/* final CTA */
.cta { text-align:center; }
.cta-box { position:relative; border:1px solid var(--line-2); border-radius:var(--r-2xl); padding:70px 32px; overflow:hidden; background:var(--bg-card); }
.cta-box::before { content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(60% 90% at 50% 0%, rgba(127,255,176,0.12), transparent 62%),
    linear-gradient(var(--mint-soft) 1px, transparent 1px), linear-gradient(90deg, var(--mint-soft) 1px, transparent 1px);
  background-size:auto, 46px 46px, 46px 46px;
  -webkit-mask-image:radial-gradient(80% 100% at 50% 0%, #000, transparent 75%); mask-image:radial-gradient(80% 100% at 50% 0%, #000, transparent 75%); }
.cta-box > * { position:relative; }
.cta-box h2 { font-size:clamp(30px,4vw,46px); }
.cta-box p { color:var(--fg-soft); font-size:17px; margin:16px auto 0; max-width:540px; line-height:1.6; }
.cta-box .cta-row { display:flex; gap:12px; justify-content:center; margin-top:30px; flex-wrap:wrap; }

/* footer */
footer { position:relative; border-top:1px solid var(--line); padding:54px 0 44px; overflow:hidden; }
footer::before { content:""; position:absolute; left:0; right:0; top:0; height:200px; pointer-events:none;
  background:radial-gradient(40% 200px at 50% 0%, rgba(127,255,176,0.05), transparent 70%); }
.foot { position:relative; display:flex; justify-content:space-between; gap:24px; flex-wrap:wrap; align-items:flex-start; }
.foot .brand { font-size:15px; }
.foot .legal { color:var(--fg-dim); font-size:12.5px; line-height:1.7; margin-top:12px; max-width:360px; }
.foot a.mail { color:var(--mint); }
.foot-links { display:flex; gap:40px; }
.foot-col h5 { font-family:var(--mono); font-size:10px; letter-spacing:0.12em; text-transform:uppercase; color:var(--fg-dim); margin:0 0 10px; }
.foot-col a { display:block; color:var(--fg-soft); font-size:13.5px; padding:4px 0; }
.foot-col a:hover { color:var(--mint); }

/* reveal */
.reveal { opacity:0; transform:translateY(14px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity:1; transform:none; }
.no-js .reveal { opacity:1; transform:none; }
[data-d="1"]{transition-delay:.06s}[data-d="2"]{transition-delay:.12s}[data-d="3"]{transition-delay:.18s}[data-d="4"]{transition-delay:.24s}[data-d="5"]{transition-delay:.3s}

@media (prefers-reduced-motion: reduce) { *,*::before,*::after { animation-duration:.001ms!important; transition-duration:.001ms!important; } .reveal{opacity:1;transform:none;} .hero-floor{display:none;} }

/* responsive */
@media (max-width:920px) {
  .hero-grid { grid-template-columns:1fr; gap:36px; }
  .cards, .steps { grid-template-columns:repeat(2,1fr); }
  .secgrid { grid-template-columns:repeat(2,1fr); }
  .split, .shots { grid-template-columns:1fr; }
  .statband .wrap { grid-template-columns:repeat(2,1fr); row-gap:26px; }
  .nav-links { display:none; }
  .nav-burger { display:grid; place-items:center; }
  .nav-links.open { display:flex; position:absolute; top:64px; left:0; right:0; flex-direction:column; background:var(--bg-stage); border-bottom:1px solid var(--line); padding:10px 16px; }
}
@media (max-width:560px) {
  .cards, .secgrid, .steps { grid-template-columns:1fr; }
  .statband .wrap { grid-template-columns:1fr 1fr; }
  .hero { padding:124px 0 68px; } section { padding:66px 0; }
}