:root{
  --bg:#0a0d12; --panel:#121821; --panel2:#18202c; --line:#243042;
  --text:#e9eef5; --muted:#9aa8bb; --accent:#33d9ff; --accent-ink:#04141a;
  --radius:16px; --max:1080px;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg:#f6f8fb; --panel:#ffffff; --panel2:#eef2f7; --line:#d9e1ec;
    --text:#0d1520; --muted:#566478; --accent:#0891b2; --accent-ink:#ffffff;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:17px/1.65 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  -webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:Anton,Impact,"Arial Narrow",sans-serif;font-weight:400;
  letter-spacing:.02em;line-height:1.1;margin:0 0 .5em;text-transform:uppercase}
h1{font-size:clamp(2.6rem,7vw,4.6rem)}
h2{font-size:clamp(1.8rem,4vw,2.6rem)}
h3{font-size:1.4rem}
p{margin:0 0 1em}
.muted{color:var(--muted)}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.logo{font-family:Anton,Impact,sans-serif;font-size:1.5rem;letter-spacing:.04em;
  text-transform:uppercase;color:var(--text);text-decoration:none}
.logo span{color:var(--accent)}
.nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.nav ul a{display:block;padding:8px 12px;border-radius:999px;color:var(--muted);
  text-decoration:none;font-size:.95rem;font-weight:500}
.nav ul a:hover,.nav ul a[aria-current="page"]{color:var(--text);background:var(--panel2)}
@media (max-width:760px){
  .nav{flex-direction:column;align-items:flex-start;padding:10px 0;gap:6px}
  .nav ul{gap:2px}
  .nav ul a{padding:6px 10px;font-size:.9rem}
}

/* buttons */
.btn{display:inline-block;padding:13px 22px;border-radius:999px;font-weight:700;
  text-decoration:none;border:2px solid var(--accent);background:var(--accent);color:var(--accent-ink)}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.disabled{opacity:.55;pointer-events:none;border-style:dashed}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}

/* hero */
.hero{padding:56px 0 40px;display:grid;gap:36px;grid-template-columns:1.05fr .95fr;align-items:center}
.hero .lede{font-size:1.2rem;color:var(--muted);max-width:34ch}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-img{border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;
  box-shadow:0 20px 60px rgba(51,217,255,.12)}
@media (max-width:820px){.hero{grid-template-columns:1fr;padding-top:36px}}

/* sections */
section{padding:44px 0}
.kicker{color:var(--accent);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.8rem;margin-bottom:8px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin-bottom:.3em}
.card p:last-child{margin-bottom:0}
.band{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.split{display:grid;gap:32px;grid-template-columns:1fr 1fr;align-items:center}
@media (max-width:820px){.split{grid-template-columns:1fr}}
.list{padding-left:1.1em;margin:0 0 1em}
.list li{margin-bottom:.4em}
.pill{display:inline-block;background:var(--panel2);border:1px solid var(--line);
  border-radius:999px;padding:3px 12px;font-size:.82rem;color:var(--muted);margin:0 6px 6px 0}
.notice{border-left:4px solid var(--accent);background:var(--panel);padding:14px 18px;
  border-radius:0 var(--radius) var(--radius) 0;margin:0 0 1.4em;color:var(--muted)}

/* article pages */
.page{padding:48px 0 64px;max-width:760px}
.page h2{margin-top:1.6em}
.page h3{margin-top:1.4em}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:32px 0;color:var(--muted);font-size:.92rem}
.footer-grid{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--text)}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;gap:16px;flex-wrap:wrap}

.hero-img.phone{width:min(100%,330px);justify-self:center;margin:0 auto}
.hero-img.phone img{width:100%}

/* app icon */
.app-icon{border-radius:22.37%;box-shadow:0 10px 30px rgba(91,43,214,.35)}
.app-icon.sm{width:56px;height:56px;margin-bottom:12px;box-shadow:0 6px 16px rgba(91,43,214,.3)}
.app-title{display:flex;align-items:center;gap:20px;margin-bottom:8px}
.app-title h1{margin-bottom:0}
@media (max-width:520px){.app-title{gap:14px}.app-title .app-icon{width:84px;height:84px}}