:root {
  --navy: #0a2540;
  --sky: #4da3ff;
  --bg: #050d1a;
  --glass: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.18);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: radial-gradient(circle at top, rgba(77,163,255,0.18), transparent 60%), var(--bg);
  color: white;
}

/* NAV */
.nav {
  position: fixed;
  width: 100%;
  background: rgba(5,13,26,0.7);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-inner {
  max-width: 1200px;
  margin: auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.logo {
  width: 36px;
  border-radius: 8px;
}

.nav-links a {
  margin-left: 24px;
  color: white;
  text-decoration: none;
  opacity: 0.8;
}

.nav-links a:hover { opacity: 1; }

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 20px 80px;
  position: relative;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--sky), #7bc3ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  max-width: 600px;
  margin: auto;
  opacity: 0.8;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(77,163,255,0.3), transparent 70%);
  top: -200px;
  z-index: -1;
}

/* SECTION */
.section {
  padding: 100px 20px;
  max-width: 1200px;
  margin: auto;
  text-align: center;
}

.section.alt {
  background: rgba(255,255,255,0.03);
}

.section h2 {
  margin-bottom: 60px;
  font-size: 2rem;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
  gap: 24px;
}

.card {
  background: var(--glass);
  border: 1px solid var(--border);
  padding: 28px;
  border-radius: 20px;
  backdrop-filter: blur(16px);
  transition: 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--sky);
}

/* TIMELINE */
.timeline {
  max-width: 700px;
  margin: auto;
}

.step {
  display: flex;
  gap: 20px;
  margin-bottom: 40px;
  text-align: left;
}

.step-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--sky);
}

/* SCREENS */
.screens {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(200px,1fr));
  gap: 24px;
}

.screens img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

/* CTA SECTION */
.cta-section {
  padding: 100px 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--navy), #06142a);
}

.btn {
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  margin-top: 20px;
}

.btn.primary {
  background: linear-gradient(135deg, var(--sky), #7bc3ff);
  color: #041427;
}

footer {
  padding: 40px 20px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1200px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

footer a {
  margin-left: 20px;
  color: white;
  text-decoration: none;
  opacity: 0.7;
}