/* Airwave Scan — shared design system for the landing page + activity pages. */
:root{
  --bg:#05070d; --bg-2:#0a0e17; --surface:rgba(255,255,255,.04); --surface-2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.09); --border-2:rgba(255,255,255,.14);
  --text:#e8eef6; --muted:#93a1b4; --faint:#5f6b7d;
  --cyan:#22d3ee; --indigo:#818cf8; --violet:#c084fc; --green:#34d399; --amber:#fbbf24;
  --grad:linear-gradient(100deg,var(--cyan),var(--indigo) 55%,var(--violet));
  --grad-soft:linear-gradient(100deg,rgba(34,211,238,.16),rgba(192,132,252,.16));
  --maxw:1160px;
  --r:18px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.1;margin:0;letter-spacing:-.02em;font-weight:800}
p{margin:0}
img{max-width:100%}
[hidden]{display:none!important}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{font-size:.82rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.8em 1.35em;border-radius:999px;font-weight:600;font-size:.98rem;border:1px solid transparent;transition:.2s transform,.2s box-shadow,.2s background,.2s border-color;cursor:pointer}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--grad);color:#06121a;box-shadow:0 10px 30px -8px rgba(34,211,238,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(129,140,248,.55)}
.btn-ghost{background:var(--surface);border-color:var(--border-2);color:var(--text)}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--cyan)}

/* backdrop field */
.field{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.field::before{content:"";position:absolute;inset:-20% -10% auto -10%;height:80vh;
  background:
    radial-gradient(60% 60% at 20% 10%,rgba(34,211,238,.20),transparent 60%),
    radial-gradient(50% 60% at 85% 0%,rgba(192,132,252,.18),transparent 60%),
    radial-gradient(50% 50% at 60% 30%,rgba(129,140,248,.14),transparent 60%);
  filter:blur(20px)}
.grid-lines{position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 78%)}
.waterfall{position:absolute;left:0;right:0;bottom:0;height:34vh;opacity:.5;
  background:repeating-linear-gradient(90deg,transparent 0 5px,rgba(34,211,238,.05) 5px 6px);
  mask-image:linear-gradient(0deg,#000,transparent)}

/* nav */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(5,7,13,.62);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:.62em;font-weight:800;letter-spacing:-.02em;font-size:1.06rem}
.brand .mark{width:30px;height:30px;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:30px;font-size:.94rem;color:var(--muted)}
.nav-links a{transition:color .18s}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text)}
.nav-cta{display:flex;align-items:center;gap:14px}
@media(max-width:860px){.nav-links{display:none}.nav-cta .btn-ghost{display:none}}

/* Activities dropdown (desktop nav) */
.nav-drop{position:relative}
.nav-drop>a{display:inline-flex;align-items:center;gap:.4em}
.nav-drop>a::after{content:"";width:.38em;height:.38em;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.55}
.nav-menu{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(6px);min-width:214px;background:var(--bg-2);border:1px solid var(--border-2);border-radius:14px;padding:7px;display:flex;flex-direction:column;gap:2px;opacity:0;visibility:hidden;transition:opacity .17s ease,transform .17s ease;box-shadow:var(--shadow);z-index:60}
.nav-menu::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.nav-drop:hover .nav-menu,.nav-drop:focus-within .nav-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav-menu a{padding:9px 13px;border-radius:9px;color:var(--muted);white-space:nowrap;font-size:.92rem}
.nav-menu a:hover{background:var(--surface-2);color:var(--text)}

section{position:relative;z-index:1}
.pad{padding:clamp(64px,9vw,128px) 0}
.pad-sm{padding:clamp(44px,6vw,84px) 0}

/* hero */
.hero{padding:clamp(40px,7vw,84px) 0 clamp(30px,6vw,72px)}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.4rem,5.3vw,4.15rem);font-weight:900}
.hero p.lead{margin-top:22px;font-size:clamp(1.05rem,1.7vw,1.28rem);color:var(--muted);max-width:33ch}
.hero-cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:.86rem;color:var(--faint)}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chip{display:inline-flex;align-items:center;gap:.5em;padding:.42em .8em;border-radius:999px;background:var(--surface);border:1px solid var(--border);font-size:.82rem;color:var(--muted)}
.chip b{color:var(--text);font-weight:700}
.dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.dot.amber{background:var(--amber);box-shadow:0 0 10px var(--amber)}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero p.lead{max-width:none}}

/* subpage hero — a bit calmer than the home hero */
.pagehero{padding:clamp(30px,6vw,72px) 0 clamp(20px,4vw,44px)}
.pagehero .lead{max-width:52ch}
.crumb{display:inline-flex;align-items:center;gap:.5em;font-size:.9rem;color:var(--muted);margin-bottom:20px;transition:color .18s}
.crumb:hover{color:var(--text)}
.crumb svg{width:15px;height:15px}

/* phone mock */
.phone-stage{display:flex;justify-content:center;position:relative}
.phone-stage::after{content:"";position:absolute;inset:8% 14%;background:var(--grad);filter:blur(70px);opacity:.34;z-index:-1;border-radius:50%}
.phone{width:290px;max-width:78vw;aspect-ratio:9/19.3;border-radius:42px;padding:11px;
  background:linear-gradient(160deg,#20262f,#0c1017);border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.14)}
.screen{position:relative;width:100%;height:100%;border-radius:32px;overflow:hidden;background:#070b12;border:1px solid rgba(255,255,255,.06)}
.screen img{display:block;width:100%;height:100%;object-fit:cover}
.notch{position:absolute;top:9px;left:50%;transform:translateX(-50%);width:38%;height:20px;background:#05070d;border-radius:0 0 14px 14px;z-index:5}
.screen svg{display:block;width:100%;height:100%}
.float{position:absolute;z-index:4;background:rgba(10,14,23,.82);backdrop-filter:blur(8px);border:1px solid var(--border-2);border-radius:14px;padding:10px 12px;box-shadow:0 12px 30px -12px #000}
.float .mono{font-size:.72rem}
.float.tune{right:-26px;top:20%}
.float.spot{left:-30px;bottom:16%}
@media(max-width:520px){.float.tune{right:-6px}.float.spot{left:-8px}}

/* section heading */
.head{max-width:60ch;margin-bottom:52px}
.head h2{font-size:clamp(1.9rem,3.6vw,2.9rem)}
.head p{margin-top:16px;font-size:1.08rem;color:var(--muted)}
.center{margin-left:auto;margin-right:auto;text-align:center}

/* feature cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.cards{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:26px;transition:.2s transform,.2s border-color,.2s background}
.card:hover{transform:translateY(-4px);border-color:var(--border-2);background:var(--surface-2)}
.ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;background:var(--grad-soft);border:1px solid var(--border-2)}
.ic svg{width:23px;height:23px;stroke:var(--cyan);fill:none;stroke-width:1.7}
.card h3{font-size:1.16rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.96rem}

/* activity cards (home → dedicated pages) */
.actcards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:760px){.actcards{grid-template-columns:1fr}}
.actcard{display:flex;flex-direction:column;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:28px;transition:.2s transform,.2s border-color,.2s background}
.actcard:hover{transform:translateY(-4px);border-color:var(--cyan);background:var(--surface-2)}
.actcard .ic{margin-bottom:2px}
.actcard h3{font-size:1.28rem}
.actcard p{color:var(--muted);font-size:.98rem}
.actcard .go{margin-top:auto;color:var(--cyan);font-weight:600;font-size:.94rem;display:inline-flex;align-items:center;gap:.4em}
.actcard .go svg{width:15px;height:15px;transition:transform .2s}
.actcard:hover .go svg{transform:translateX(4px)}

/* how it works */
.arch{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:0;align-items:stretch;margin-top:8px}
.tier{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:26px;position:relative}
.tier .n{font-size:.78rem;font-weight:800;letter-spacing:.1em;color:var(--cyan)}
.tier h3{font-size:1.24rem;margin:10px 0 6px}
.tier p{color:var(--muted);font-size:.94rem}
.tier ul{margin:14px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:7px}
.tier li{font-size:.86rem;color:var(--muted);padding-left:18px;position:relative}
.tier li::before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;border-radius:50%;background:var(--indigo)}
.link{display:grid;place-items:center;padding:0 8px;color:var(--faint)}
.link .mono{font-size:.66rem;color:var(--cyan);white-space:nowrap;transform:translateY(-18px)}
.link svg{width:44px;height:16px}
@media(max-width:900px){.arch{grid-template-columns:1fr}.link{padding:6px 0}.link svg{transform:rotate(90deg)}.link .mono{transform:none;margin-bottom:2px}}

/* decoders / domain grid */
.dec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:820px){.dec-grid{grid-template-columns:1fr}}
.dec{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:22px}
.dec h4{margin:0 0 4px;font-size:1.06rem;display:flex;align-items:center;gap:.6em}
.dec .di{width:36px;height:36px;border-radius:10px;display:inline-grid;place-items:center;background:var(--grad-soft);border:1px solid var(--border-2);flex:0 0 auto}
.dec .di svg{width:19px;height:19px;stroke:var(--cyan);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.dec .sub{color:var(--faint);font-size:.84rem;margin:2px 0 15px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:.8rem;padding:.34em .7em;border-radius:8px;background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--muted)}
.tag.mono{letter-spacing:-.01em}
.tag.hot{border-color:rgba(52,211,153,.4);color:#8ff0c8}

/* alternating feature detail rows (activity pages) */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;margin-top:56px}
.detail:first-of-type{margin-top:0}
.detail.flip .detail-media{order:-1}
@media(max-width:840px){.detail{grid-template-columns:1fr;gap:26px}.detail.flip .detail-media{order:0}}
.detail h3{font-size:clamp(1.5rem,2.8vw,2.05rem)}
.detail .kicker{font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--violet);margin-bottom:14px}
.detail p{margin-top:14px;color:var(--muted);font-size:1.04rem}
.checks{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}
.checks li{position:relative;padding-left:30px;color:var(--text);font-size:.98rem}
.checks li span{color:var(--muted)}
.checks li::before{content:"";position:absolute;left:0;top:2px;width:19px;height:19px;border-radius:6px;background:var(--grad-soft);border:1px solid var(--border-2)}
.checks li::after{content:"";position:absolute;left:6px;top:6px;width:7px;height:4px;border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(-45deg)}

/* screenshot placeholder */
.ph{position:relative;border:1.6px dashed var(--border-2);border-radius:22px;
  background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,.005));
  display:grid;place-items:center;overflow:hidden;isolation:isolate}
.ph::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.5;
  background:radial-gradient(70% 60% at 50% 0%,rgba(34,211,238,.10),transparent 70%)}
.ph.portrait{aspect-ratio:9/19;max-width:300px;margin:0 auto;width:100%;border-radius:34px}
.ph.wide{aspect-ratio:16/10}
.ph .ph-in{text-align:center;color:var(--faint);padding:24px}
.ph .ph-icon{width:52px;height:52px;border-radius:14px;margin:0 auto 14px;display:grid;place-items:center;background:var(--surface);border:1px solid var(--border-2)}
.ph .ph-icon svg{width:26px;height:26px;stroke:var(--muted);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.ph b{display:block;color:var(--muted);font-size:.98rem;font-weight:700}
.ph small{display:block;margin-top:5px;color:var(--faint);font-size:.82rem;letter-spacing:.03em}
.ph .tag{position:absolute;top:14px;left:14px;background:rgba(5,7,13,.7);font-size:.72rem}

/* mini gallery row of placeholders */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:760px){.gallery{grid-template-columns:1fr;max-width:320px;margin:0 auto}}

/* split highlight */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:36px}}
.stat-row{display:flex;gap:34px;margin-top:26px;flex-wrap:wrap}
.stat b{display:block;font-size:1.9rem;font-weight:800;letter-spacing:-.02em}
.stat span{font-size:.86rem;color:var(--muted)}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:12px;box-shadow:var(--shadow)}

/* callout strip */
.callout{background:var(--grad-soft);border:1px solid var(--border-2);border-radius:var(--r);padding:26px 28px;display:flex;gap:18px;align-items:flex-start}
.callout .ic{margin:0;flex:0 0 auto}
.callout h4{margin:0 0 4px;font-size:1.1rem}
.callout p{margin:0;color:var(--muted);font-size:.96rem}

/* cta band */
.cta{background:linear-gradient(120deg,rgba(34,211,238,.1),rgba(192,132,252,.1));border:1px solid var(--border-2);border-radius:28px;padding:clamp(36px,6vw,64px);text-align:center;position:relative;overflow:hidden}
.cta h2{font-size:clamp(1.8rem,3.6vw,2.7rem)}
.cta p{margin:16px auto 0;max-width:52ch;color:var(--muted);font-size:1.06rem}
.cta .hero-cta{justify-content:center}

footer{border-top:1px solid var(--border);margin-top:20px;padding:46px 0 60px;color:var(--muted)}
.foot{display:flex;justify-content:space-between;gap:26px;flex-wrap:wrap;align-items:flex-start}
.foot-col h5{margin:0 0 12px;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);font-weight:700}
.foot-links{display:flex;gap:24px;font-size:.92rem;flex-wrap:wrap}
.foot-links.col{flex-direction:column;gap:10px}
.foot small{color:var(--faint);font-size:.82rem}

.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}

/* ---- screenshot carousel (hero + in-page galleries) ---- */
.carousel{position:relative;display:flex;flex-direction:column;align-items:center;gap:16px}
.carousel .stage{display:grid;width:100%;justify-items:center}
.carousel .cslide{grid-area:1/1;opacity:0;transform:scale(.985);transition:opacity .55s ease,transform .55s ease;pointer-events:none;display:flex;justify-content:center}
.carousel .cslide.on{opacity:1;transform:none;pointer-events:auto}
.carousel .phone{cursor:pointer;width:290px;max-width:74vw}
.carousel .screen img{display:block;width:100%;height:100%;object-fit:cover}
.carousel .ccap{font-size:.88rem;color:var(--muted);text-align:center;min-height:1.3em;max-width:34ch}
.carousel .ccap b{color:var(--text);font-weight:700}
.cdots{display:flex;gap:8px;justify-content:center;align-items:center}
.cdot{width:8px;height:8px;border-radius:50%;background:var(--border-2);border:0;padding:0;cursor:pointer;transition:width .2s,background .2s}
.cdot.on{background:var(--cyan);width:22px;border-radius:5px}
.cdot:hover{background:var(--muted)}

/* a single framed screenshot (non-carousel placeholders that got a real shot) */
.shot-real{width:290px;max-width:76vw;margin:0 auto}
.shot-real .screen img{display:block;width:100%;height:100%;object-fit:cover}
.detail-media .shot-real{width:270px}

/* CarPlay showcase — real in-dash landscape screens */
.cp-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:34px}
.cp-shot{margin:0}
.cp-screen{border-radius:16px;overflow:hidden;border:1px solid var(--border-2);background:#000;box-shadow:var(--shadow)}
.cp-screen img{display:block;width:100%;height:auto}
.cp-shot figcaption{margin-top:14px;color:var(--muted);font-size:.9rem;line-height:1.45}
.cp-shot figcaption b{display:block;color:var(--text);font-weight:600;margin-bottom:3px}
@media(max-width:820px){.cp-grid{grid-template-columns:1fr;max-width:460px;margin-inline:auto}}

/* Spec comparison table (SDR dongles) */
.spec-wrap{overflow-x:auto;margin-top:26px;border:1px solid var(--border);border-radius:var(--r);-webkit-overflow-scrolling:touch}
.spec-table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:680px}
.spec-table th{text-align:left;color:var(--text);background:var(--surface-2);padding:13px 16px;border-bottom:1px solid var(--border-2);font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;font-weight:700;white-space:nowrap}
.spec-table td{padding:14px 16px;border-bottom:1px solid var(--border);color:var(--muted);vertical-align:top;line-height:1.45}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover td{background:var(--surface)}
.spec-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap}
.spec-table small{display:block;color:var(--faint);font-size:.82rem;margin-top:2px;font-weight:400}

/* Noise-reduction A/B demo (GIF + audio player) */
.nr-demo{margin:0;width:min(430px,100%)}
.nr-demo img{display:block;width:100%;border-radius:14px;border:1px solid var(--border-2);box-shadow:var(--shadow)}
.nr-audio{width:100%;margin-top:12px;height:40px;border-radius:9px}
.nr-demo figcaption{margin-top:11px;color:var(--muted);font-size:.86rem;line-height:1.5}
.nr-demo figcaption b{color:var(--text);font-weight:600}

/* in-page gallery: a framed shot that opens a lightbox of related screens */
.gallery-open{position:relative;cursor:pointer}
.gallery-open .more{position:absolute;right:10px;bottom:10px;z-index:6;background:rgba(5,7,13,.82);border:1px solid var(--border-2);border-radius:999px;padding:.4em .8em;font-size:.76rem;color:var(--text);display:inline-flex;gap:.4em;align-items:center;backdrop-filter:blur(6px)}
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(3,5,9,.86);backdrop-filter:blur(10px);display:none;place-items:center;padding:24px}
.lightbox.on{display:grid}
.lightbox .lbox{display:flex;flex-direction:column;align-items:center;gap:16px;max-width:min(92vw,420px)}
.lightbox .phone{width:100%;max-width:320px}
.lightbox .screen img{display:block;width:100%;object-fit:cover}
.lightbox .lcap{color:var(--text);font-size:.95rem;text-align:center}
.lightbox .lcap span{color:var(--muted);display:block;font-size:.84rem;margin-top:3px}
.lb-close{position:fixed;top:20px;right:20px;width:42px;height:42px;border-radius:50%;background:var(--surface-2);border:1px solid var(--border-2);color:var(--text);font-size:1.3rem;cursor:pointer;display:grid;place-items:center}
.lb-nav{display:flex;gap:14px;align-items:center}
.lb-nav button{width:44px;height:44px;border-radius:50%;background:var(--surface-2);border:1px solid var(--border-2);color:var(--text);cursor:pointer;font-size:1.1rem}