*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:       #257BCF;
  --blue-light: #68ABEC;
  --blue-dim:   #ADCFE9;
  --cream:      #FFFCED;
  --dark:       #1A1A1A;
  --mid:        #5C6B7A;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: radial-gradient(ellipse at 50% 30%, var(--cream) 0%, var(--blue-dim) 100%);
  min-height: 100vh;
  color: var(--dark);
  overflow-x: hidden;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px;
  height: 64px;
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  background: rgba(255,255,255,0.55);
  border-bottom: 1px solid rgba(255,255,255,0.6);
}
.nav-logo {
  font-size: 20px; font-weight: 700; letter-spacing: -0.5px;
  color: var(--blue); text-decoration: none;
}
.nav-back {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500; color: var(--mid);
  text-decoration: none; transition: color .2s;
}
.nav-back:hover { color: var(--blue); }
.nav-back svg { width: 16px; height: 16px; }

/* ── BLOB ── */
.blob {
  position: fixed; border-radius: 50%;
  filter: blur(90px); pointer-events: none; z-index: -1;
}
.blob-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(104,171,236,0.25), transparent 70%);
  top: -200px; right: -150px;
  animation: float1 12s ease-in-out infinite;
}
.blob-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,252,237,0.4), transparent 70%);
  bottom: 100px; left: -150px;
  animation: float2 15s ease-in-out infinite;
}
@keyframes float1 {
  0%, 100% { transform: translate(0,0); }
  50% { transform: translate(-30px, 40px); }
}
@keyframes float2 {
  0%, 100% { transform: translate(0,0); }
  50% { transform: translate(40px,-30px); }
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid rgba(37,123,207,0.12);
  padding: 36px 40px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.footer-logo { font-size: 16px; font-weight: 700; color: var(--blue); }
.footer-copy { font-size: 13px; color: rgba(90,100,115,0.7); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 13px; color: var(--mid); text-decoration: none; transition: color .2s; }
.footer-links a:hover { color: var(--blue); }

@media (max-width: 640px) {
  nav { padding: 0 20px; }
  footer { flex-direction: column; align-items: flex-start; }
}