:root {
  --bg: #eaf6ff;
  --bg-deep: #d6ecff;
  --surface: #ffffff;
  --text: #0b2a6b;
  --muted: #5a7aa8;
  --primary: #0066f0;
  --primary-dark: #0048d8;
  --cyan: #01cffe;
  --border: #a8d4ff;
  --success: #00b030;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Plus Jakarta Sans", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary-dark);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.brand img {
  border-radius: 0.55rem;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav > a:not(.btn) {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.75rem;
  padding: 0.55rem 1rem;
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-solid {
  background: var(--primary);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--primary-dark);
  border-color: var(--border);
}

.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border-color: var(--primary);
}

.btn-lg {
  padding: 0.85rem 1.25rem;
  font-size: 1rem;
}

.hero {
  position: relative;
  min-height: calc(100vh - 4.5rem);
  display: grid;
  place-items: center;
  padding: 3rem 1.5rem 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 15% 20%, rgba(1, 207, 254, 0.45), transparent 60%),
    radial-gradient(ellipse 70% 50% at 85% 75%, rgba(0, 72, 216, 0.28), transparent 55%),
    linear-gradient(165deg, #eaf6ff 0%, #b8e8ff 42%, #5eb6ff 100%);
  animation: drift 14s ease-in-out infinite alternate;
}

@keyframes drift {
  from {
    transform: scale(1) translate(0, 0);
  }
  to {
    transform: scale(1.04) translate(-1%, 1%);
  }
}

.hero-copy {
  position: relative;
  max-width: 40rem;
  text-align: center;
  animation: rise 0.8s ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.brand-hero {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 4rem);
  font-weight: 700;
  color: var(--primary-dark);
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.8vw, 2.2rem);
  font-weight: 600;
  margin: 0 0 0.85rem;
  line-height: 1.25;
}

.lede {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0 0 1.5rem;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.features {
  padding: 4rem 1.5rem 5rem;
  max-width: 56rem;
  margin: 0 auto;
}

.features h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2rem);
  margin: 0 0 0.5rem;
}

.section-lede {
  color: var(--muted);
  margin: 0 0 2rem;
  max-width: 36rem;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.feature-list li {
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 0.35rem;
}

.feature-list strong {
  font-size: 1.05rem;
}

.feature-list span {
  color: var(--muted);
  line-height: 1.5;
}

.foot {
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

.foot a {
  color: var(--primary);
  font-weight: 600;
}

@media (max-width: 720px) {
  .nav > a:not(.btn) {
    display: none;
  }
}