:root {
  --ink: #07131f;
  --ink-soft: #0d2133;
  --fog: #d7e6f2;
  --mist: #9bb4c7;
  --glow: #2ec4b6;
  --glow-deep: #1a9e93;
  --paper: #f3f7fb;
  --warn-soft: #c9a227;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
    Georgia, serif;
  --font-body: "Segoe UI Variable Text", "Segoe UI", "Avenir Next",
    "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 90% 55% at 12% -10%, rgba(46, 196, 182, 0.28), transparent 55%),
    radial-gradient(ellipse 70% 50% at 100% 10%, rgba(56, 120, 180, 0.22), transparent 50%),
    linear-gradient(165deg, #061018 0%, #0a1c2c 42%, #07131f 100%);
  animation: drift 18s ease-in-out infinite alternate;
}

@keyframes drift {
  from {
    filter: hue-rotate(0deg);
    transform: scale(1);
  }
  to {
    filter: hue-rotate(12deg);
    transform: scale(1.03);
  }
}

.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 6vw, 4.5rem) clamp(1.25rem, 5vw, 3.5rem) 3rem;
  max-width: 52rem;
}

.pilot {
  margin: 0 0 1rem;
  color: var(--glow);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  animation: rise 0.8s ease-out both;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 12vw, 6.2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 0.95;
  animation: rise 0.9s ease-out 0.08s both;
}

.tagline {
  margin: 1.1rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.6vw, 1.85rem);
  font-weight: 500;
  color: var(--fog);
  animation: rise 1s ease-out 0.14s both;
}

.lead {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  color: var(--mist);
  animation: rise 1.05s ease-out 0.2s both;
}

.cta-row {
  margin: 2rem 0 0;
  animation: rise 1.1s ease-out 0.28s both;
}

.cta {
  display: inline-block;
  padding: 0.9rem 1.45rem;
  border-radius: 0.35rem;
  background: var(--glow);
  color: #04221f;
  font-weight: 650;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.cta:hover,
.cta:focus-visible {
  background: #4ad6c9;
  transform: translateY(-1px);
}

.cta:focus-visible {
  outline: 2px solid var(--fog);
  outline-offset: 3px;
}

main {
  padding: 0 clamp(1.25rem, 5vw, 3.5rem) 4rem;
  max-width: 52rem;
}

.block {
  padding: 2.75rem 0;
  border-top: 1px solid rgba(155, 180, 199, 0.18);
}

.block h2 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2rem);
  font-weight: 600;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}

.steps .n {
  display: inline-grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid rgba(46, 196, 182, 0.55);
  border-radius: 999px;
  color: var(--glow);
  font-size: 0.95rem;
  font-weight: 650;
}

.steps h3 {
  margin: 0.15rem 0 0.35rem;
  font-size: 1.08rem;
}

.steps p,
.uses span,
.note,
.faq dd,
.final p {
  margin: 0;
  color: var(--mist);
}

.uses {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.uses li {
  display: grid;
  gap: 0.25rem;
}

.uses strong {
  font-size: 1.05rem;
}

.facts {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--fog);
}

.facts li + li {
  margin-top: 0.45rem;
}

.note {
  margin-top: 1rem;
  font-size: 0.95rem;
}

.faq {
  margin: 0;
}

.faq dt {
  margin: 1.15rem 0 0.35rem;
  font-weight: 650;
}

.faq dt:first-child {
  margin-top: 0;
}

.faq dd {
  margin: 0;
}

.final .cta-row {
  margin-top: 1.35rem;
}

footer {
  padding: 1.5rem clamp(1.25rem, 5vw, 3.5rem) 2.5rem;
  color: var(--mist);
  font-size: 0.9rem;
  border-top: 1px solid rgba(155, 180, 199, 0.12);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .atmosphere,
  .pilot,
  .brand,
  .tagline,
  .lead,
  .cta-row {
    animation: none;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 1rem;
  }

  .hero {
    min-height: auto;
    padding-top: 4.5rem;
    padding-bottom: 2.5rem;
  }

  .cta {
    width: 100%;
    text-align: center;
  }
}