:root{
  --background:hsl(193 20% 98%);
  --foreground:hsl(193 60% 10%);
  --card:hsl(193 30% 99%);
  --card-border:hsl(193 20% 90%);
  --primary:hsl(193 52% 39%);
  --primary-dark:hsl(193 52% 32%);
  --primary-foreground:hsl(193 20% 98%);
  --secondary:hsl(193 20% 90%);
  --muted-foreground:hsl(193 20% 40%);
  --accent:hsl(193 30% 85%);
  --border:hsl(193 20% 90%);
  --radius:1rem;
  --font-sans:"Outfit","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--foreground);background:var(--background);
  line-height:1.55;-webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}

header{
  position:fixed;top:0;width:100%;z-index:50;
  background:hsl(193 20% 98% / .8);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid hsl(193 20% 90% / .5);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand img{height:32px;width:auto}
.nav-mid{display:flex;gap:32px;align-items:center}
.nav-mid a{color:var(--muted-foreground);font-size:14px;font-weight:500;transition:color .15s}
.nav-mid a:hover{color:var(--foreground)}
.nav-right{display:flex;align-items:center;gap:8px}
.lang-switch{display:flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.lang-switch button{
  border:0;background:transparent;padding:6px 10px;font-size:12px;font-weight:600;
  color:var(--muted-foreground);cursor:pointer;font-family:inherit;
}
.lang-switch button.on{background:var(--primary);color:var(--primary-foreground)}
.btn-header{
  display:inline-flex;align-items:center;white-space:nowrap;
  background:var(--primary);color:var(--primary-foreground);
  font-size:14px;font-weight:500;padding:8px 16px;border-radius:8px;
}
.btn-header:hover{background:var(--primary-dark)}
@media(max-width:760px){.nav-mid{display:none}.btn-header{display:none}}

/* ---------- hero ---------- */
.hero{
  padding:128px 0 72px;text-align:center;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at top right, hsl(193 52% 39% / .10), var(--background) 55%);
}
.hero>.wrap{position:relative}
.hero .logo{height:56px;width:auto;margin:0 auto 28px}
.hero h1{
  font-size:clamp(38px,6vw,64px);font-weight:700;letter-spacing:-.02em;line-height:1.12;
}
.hero h1 .tl{color:var(--primary)}
.hero p.sub{
  margin:20px auto 0;font-size:clamp(16px,2.3vw,21px);color:var(--muted-foreground);max-width:640px;
}
.hero .cta-row{margin-top:36px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:56px;padding:0 32px;border-radius:999px;font-size:17px;font-weight:500;
  transition:transform .15s ease,background .15s ease;font-family:inherit;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--primary);color:var(--primary-foreground);border:1px solid var(--primary-dark);box-shadow:0 8px 24px hsl(193 52% 39% / .3)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{border:1px solid var(--border);color:var(--foreground);box-shadow:0 1px 2px hsl(193 60% 10% / .05)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- platform grid ---------- */
.apps{padding:48px 0 40px}
.apps h2,.features-sec h2,.cta-sec h2{
  text-align:center;font-size:clamp(26px,3.8vw,38px);font-weight:700;letter-spacing:-.01em;
}
.apps .sub{color:var(--muted-foreground);text-align:center;margin-top:10px;font-size:17px}
.grid{
  margin-top:44px;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:20px;
}
.card{
  background:var(--card);border:1px solid hsl(193 20% 90% / .5);border-radius:var(--radius);
  padding:32px 26px;text-align:center;
  box-shadow:0 1px 2px hsl(193 60% 10% / .05);
  transition:transform .18s ease,box-shadow .18s ease;
  display:flex;flex-direction:column;align-items:center;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 32px hsl(193 60% 10% / .10)}
.card .icon{
  width:64px;height:64px;border-radius:16px;margin-bottom:18px;
  background:hsl(193 52% 39% / .10);display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.card .icon svg{width:34px;height:34px}
.card h3{font-size:19px;font-weight:600}
.card p{color:var(--muted-foreground);font-size:14.5px;margin-top:6px;flex:1}
.card .dl{
  margin-top:20px;display:inline-flex;align-items:center;gap:8px;
  background:var(--primary);color:var(--primary-foreground);font-weight:500;font-size:15px;
  height:44px;padding:0 26px;border-radius:999px;border:1px solid var(--primary-dark);
}
.card .dl:hover{background:var(--primary-dark)}
.card .dl svg{width:16px;height:16px}

/* ---------- features (real gapp.chat items) ---------- */
.features-sec{background:var(--card);border-top:1px solid var(--border);margin-top:48px;padding:88px 0}
.features-sec .sub{color:var(--muted-foreground);text-align:center;margin-top:10px;font-size:17px;max-width:720px;margin-left:auto;margin-right:auto}
.feat-grid{margin-top:56px;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px}
.feat{
  background:var(--background);padding:32px;border-radius:var(--radius);
  border:1px solid hsl(193 20% 90% / .5);box-shadow:0 1px 2px hsl(193 60% 10% / .04);
}
.feat .fi{
  width:48px;height:48px;border-radius:12px;margin-bottom:22px;
  background:hsl(193 52% 39% / .10);display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.feat .fi svg{width:24px;height:24px}
.feat h4{font-size:19px;font-weight:600;margin-bottom:10px}
.feat p{color:var(--muted-foreground);font-size:15px}

/* ---------- bottom CTA (teal band, like #security) ---------- */
.cta-sec{background:var(--primary);color:var(--primary-foreground);padding:88px 0;text-align:center}
.cta-sec h2{color:var(--primary-foreground)}
.cta-sec p{font-size:19px;color:hsl(193 20% 98% / .8);max-width:640px;margin:16px auto 36px}
.cta-sec .btn-white{background:var(--background);color:var(--foreground);border:0}
.cta-sec .btn-white:hover{background:#fff}

/* ---------- footer (dark, like gapp.chat) ---------- */
footer{background:var(--foreground);color:var(--background);padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:48px;padding-bottom:48px}
.foot-grid img{height:32px;width:auto;margin-bottom:16px}
.foot-grid p{color:hsl(193 20% 98% / .7);font-size:14px;max-width:280px}
.foot-grid h4{font-weight:600;margin-bottom:16px;font-size:15px}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:8px}
.foot-grid a{color:hsl(193 20% 98% / .7);font-size:14px;transition:color .15s}
.foot-grid a:hover{color:var(--background)}
.foot-bottom{
  border-top:1px solid hsl(193 20% 98% / .2);
  padding:32px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:14px;color:hsl(193 20% 98% / .7);
}
.foot-bottom a{color:hsl(193 20% 98% / .7)}
.foot-bottom a:hover{color:var(--background)}