:root {
  color-scheme: dark;
  --bg: #060a0f;
  --surface: #0d141d;
  --panel: #121c28;
  --line: #263646;
  --text: #f7fbff;
  --muted: #a9bbcc;
  --dim: #728497;
  --accent: #48d597;
  --cyan: #58bdfb;
  --warning: #ffd447;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: radial-gradient(circle at 80% 10%, rgba(48, 174, 234, 0.22), transparent 32rem), var(--bg);
  color: var(--text);
  font-family: "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 44px;
  background: rgba(6, 10, 15, 0.82);
  border-bottom: 1px solid rgba(78, 104, 132, 0.35);
  backdrop-filter: blur(16px);
}

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

.brand {
  gap: 12px;
  font-weight: 800;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

nav {
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

main {
  overflow: hidden;
}

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  align-items: center;
  padding: 56px 44px 96px;
}

.hero-art {
  position: absolute;
  inset: 28px 28px auto 28px;
  width: calc(100% - 56px);
  max-height: 690px;
  object-fit: cover;
  border-radius: 28px;
  border: 1px solid rgba(72, 213, 151, 0.45);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.42);
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(670px, 92vw);
  padding-left: clamp(20px, 4vw, 72px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  font-size: 13px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 610px;
  margin-bottom: 18px;
  font-size: clamp(52px, 6vw, 92px);
  line-height: 0.98;
  letter-spacing: 0;
}

.lead {
  max-width: 640px;
  color: #c6d8e8;
  font-size: 22px;
  line-height: 1.45;
}

.actions {
  gap: 14px;
  margin-top: 34px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 10px;
  font-weight: 800;
}

.button.primary {
  background: var(--accent);
  color: #04110d;
}

.button.secondary {
  border: 1px solid rgba(126, 159, 190, 0.55);
  background: rgba(12, 23, 33, 0.76);
  color: var(--text);
}

.band,
.pricing {
  padding: 86px 44px;
  max-width: 1240px;
  margin: 0 auto;
}

.section-head {
  max-width: 780px;
  margin-bottom: 28px;
}

h2 {
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.04;
}

.feature-grid,
.plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

article {
  min-height: 250px;
  padding: 24px;
  background: linear-gradient(180deg, rgba(18, 28, 40, 0.92), rgba(13, 20, 29, 0.92));
  border: 1px solid var(--line);
  border-radius: 8px;
}

article span {
  color: var(--warning);
  font-weight: 900;
}

article h3 {
  margin: 18px 0 12px;
  font-size: 24px;
}

article p {
  color: var(--muted);
  line-height: 1.55;
}

.plans article {
  min-height: 310px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.plans strong {
  color: var(--accent);
  font-size: 34px;
  margin-bottom: 14px;
}

.plans .button {
  margin-top: auto;
}

.plans .featured {
  border-color: rgba(72, 213, 151, 0.8);
  box-shadow: 0 0 0 1px rgba(72, 213, 151, 0.15), 0 24px 60px rgba(72, 213, 151, 0.12);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px 44px;
  color: var(--dim);
  border-top: 1px solid rgba(78, 104, 132, 0.35);
}

@media (max-width: 900px) {
  .topbar {
    padding: 0 20px;
  }

  nav {
    display: none;
  }

  .hero {
    min-height: 720px;
    padding: 120px 20px 72px;
  }

  .hero-art {
    inset: 16px 12px auto 12px;
    width: calc(100% - 24px);
    height: 640px;
    opacity: 0.52;
  }

  .hero-copy {
    padding-left: 0;
  }

  .lead {
    font-size: 19px;
  }

  .band,
  .pricing {
    padding: 58px 20px;
  }

  .feature-grid,
  .plans {
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
    padding: 24px 20px;
  }
}