:root{
  --bg: #0b1220;
  --text: #e5e7eb;
  --muted: rgba(229,231,235,0.75);
  --border: rgba(255,255,255,0.10);
  --shadow: 0 18px 50px rgba(0,0,0,0.35);
  --radius: 18px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(1200px 700px at 20% 10%, rgba(96,165,250,0.18), transparent 60%),
    radial-gradient(900px 600px at 85% 25%, rgba(52,211,153,0.14), transparent 55%),
    linear-gradient(180deg, #070b14 0%, var(--bg) 55%, #0a1020 100%);
  color: var(--text);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }
a:hover{ color: #fff; }

.top{
  padding: 22px 18px 44px;
  max-width: 1100px;
  margin: 0 auto;
}

/* NAV */
.nav{
  position: sticky;
  top: 14px;
  z-index: 50;

  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 14px;

  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(8, 12, 24, 0.55);
  backdrop-filter: blur(12px);

  box-shadow: 0 10px 26px rgba(0,0,0,0.25);
  transition: padding 140ms ease, border-color 140ms ease, background 140ms ease;
}

.nav--scrolled{
  padding: 9px 12px;
  border-color: rgba(255,255,255,0.14);
  background: rgba(8, 12, 24, 0.72);
}

.brand{
  display:flex;
  align-items:center;
}

.brand-logo{
  height: 30px;
  width: auto;
  display:block;
  object-fit: contain;
  transition: height 140ms ease;
}

.nav--scrolled .brand-logo{
  height: 26px;
}

.nav-links{
  display:flex;
  align-items:center;
  gap: 8px;
}

.nav-links a{
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 0.95rem;
}

.nav-links a:hover{
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

/* BUTTONS */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 750;
  border: 1px solid transparent;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
  white-space: nowrap;
}

.btn:active{ transform: translateY(1px); }
.btn.small{ padding: 10px 12px; border-radius: 12px; font-weight: 700; }

.btn.primary{
  background: linear-gradient(135deg, rgba(96,165,250,0.95), rgba(52,211,153,0.85));
  color: #07101f;
}
.btn.secondary{
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.12);
  color: var(--text);
}

/* HERO */
.hero{
  margin-top: 22px;
  text-align:center;
  padding: 54px 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.hero h1{
  margin: 0 0 10px;
  font-size: clamp(2.1rem, 3.4vw, 3.1rem);
  letter-spacing: -0.6px;
}

.hero p{
  margin: 0 auto 18px;
  max-width: 740px;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions{
  display:flex;
  justify-content:center;
  gap: 10px;
  flex-wrap:wrap;
  margin-top: 16px;
}

.hero-chips{
  display:flex;
  justify-content:center;
  gap: 10px;
  flex-wrap:wrap;
  margin-top: 16px;
}

.chip{
  font-size: 0.9rem;
  padding: 8px 12px;
  border-radius: 999px;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
}

/* MAIN/SECTIONS */
main{
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 18px 44px;
}

section{
  margin-top: 22px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.02);
}

.section-head{
  margin-bottom: 18px;
}

.section-head h2{
  margin: 0 0 8px;
  font-size: 1.7rem;
}

.section-head p{
  margin: 0;
  color: var(--muted);
  max-width: 760px;
}

.cards{
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.card{
  padding: 18px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.03);
  box-shadow: 0 14px 35px rgba(0,0,0,0.20);
  transition: transform 140ms ease, border-color 140ms ease;
}

.card:hover{
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.16);
}

.card h3{
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.card p{
  margin: 0;
  color: var(--muted);
}

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

.steps{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.step{
  display:flex;
  gap: 12px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.03);
}

.step-num{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display:grid;
  place-items:center;
  font-weight: 900;
  color: #07101f;
  background: linear-gradient(135deg, rgba(96,165,250,0.95), rgba(52,211,153,0.85));
  flex: 0 0 auto;
}

.step-title{ font-weight: 800; margin-bottom: 4px; }
.step-text{ color: var(--muted); }

/* FOOTER */
.footer{
  max-width: 1100px;
  margin: 0 auto 26px;
  padding: 14px 18px;
  text-align:center;
  color: rgba(229,231,235,0.70);
}

/* RESPONSIVE */
@media (max-width: 980px){
  .cards{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px){
  .nav-links{ display:none; }
  .cards{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .brand-logo{ height: 28px; }
  .nav--scrolled .brand-logo{ height: 24px; }
}