*{margin:0;padding:0;box-sizing:border-box;font-family:'Inter',sans-serif}
html{scroll-behavior:smooth}

:root{
  --bg:linear-gradient(120deg,#3189FF,#6FB1FF,#9FC1EE);
  --text:#222;
  --nav:rgba(255,255,255,.6);
  --card:rgba(255,255,255,.9);
  --white:#fff;
  --primary:#3189FF;
}

body{
  background:var(--bg);
  color:var(--text);
  overflow-x:hidden;
  transition:.35s;
}

body.dark{
  --bg:linear-gradient(120deg,#0f172a,#0b2447,#0a1f3d);
  --text:#e5e7eb;
  --nav:rgba(15,23,42,.75);
  --card:rgba(30,41,59,.85);
  --white:#0f172a;
}

.reveal{opacity:0;transform:translateY(60px);transition:.8s}
.reveal.show{opacity:1;transform:none}

@keyframes float{50%{transform:translateY(-25px)}}
@keyframes shine{to{transform:translateX(200%)}}

.navbar{
  position:fixed;top:0;width:100%;
  display:flex;justify-content:space-between;align-items:center;
  padding:18px 70px;
  background:var(--nav);
  backdrop-filter:blur(18px);
  z-index:1000;
  transition:.3s;
}
.navbar.scrolled{box-shadow:0 15px 35px rgba(0,0,0,.15)}

.logo{display:flex;align-items:center;gap:12px;font-size:26px;font-weight:900;color:var(--primary)}
.logo img{width:42px}

.nav-links{display:flex;gap:35px}
.nav-links a{
  text-decoration:none;color:inherit;font-weight:600;position:relative
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:-6px;height:3px;width:0;
  background:var(--primary);border-radius:3px;transition:.3s
}
.nav-links a:hover::after{width:100%}

.nav-actions{display:flex;align-items:center;gap:16px}
.menu-toggle{display:none;font-size:28px;cursor:pointer}

.btn{
  background:#4FC307;color:#fff;
  padding:14px 36px;border-radius:60px;
  text-decoration:none;font-weight:600;
  position:relative;overflow:hidden;
  transition:.3s;
}
.btn::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.35),transparent);
  transform:translateX(-100%);
}
.btn:hover::before{animation:shine 1s}
.btn:hover{transform:translateY(-4px)}

.theme-toggle{
  width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(255,255,255,.5);
  background:rgba(255,255,255,.35);
  cursor:pointer;font-size:20px;
}

.hero{
  min-height:100vh;
  display:flex;align-items:center;justify-content:space-between;
  padding:170px 90px 120px;gap:60px;
}
.hero-text{max-width:620px}
.hero-text h1{font-size:60px;margin-bottom:25px}
.hero-text span{color:#0d47a1}
.hero-text p{font-size:21px;margin-bottom:40px}

.hero-img img{
  width:560px;max-width:100%;
  filter:drop-shadow(0 30px 40px rgba(0,0,0,.25));
  animation:float 6s infinite
}

.section{padding:120px 90px}
.white{background:var(--white)}
.section h2{
  text-align:center;font-size:44px;
  margin-bottom:70px;color:var(--primary)
}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:35px
}
.card{
  background:var(--card);
  padding:35px;border-radius:22px;
  box-shadow:0 20px 40px rgba(0,0,0,.08);
  transition:.3s
}
.card:hover{transform:translateY(-10px)}

.steps{display:flex;flex-wrap:wrap;gap:25px;justify-content:center}
.step{
  background:linear-gradient(120deg,#eaf3ff,#f5f9ff);
  padding:28px 38px;border-radius:18px;font-weight:600
}
body.dark .step{background:linear-gradient(120deg,#1e293b,#0f172a)}

.cta{
  background:linear-gradient(120deg,#3189FF,#0d47a1);
  color:#fff;text-align:center;
  padding:120px 20px;
  display:flex;flex-direction:column;gap:20px;align-items:center;
}
footer{
  background:#0d1b2a;color:#fff;
  text-align:center;padding:50px;font-size:15px
}
body.dark footer{background:#020617}

@media(max-width:992px){
  .hero{flex-direction:column;text-align:center;padding:150px 40px 80px}
  .navbar{padding:15px 30px}
}

@media(max-width:768px){
  .menu-toggle{display:block}
  .nav-links{
    position:absolute;top:75px;left:0;width:100%;
    background:#fff;flex-direction:column;
    align-items:center;gap:25px;padding:25px 0;display:none
  }
  .nav-links.active{display:flex}
  .hero-text h1{font-size:40px}
  .section{padding:90px 30px}
}