:root {
  color-scheme: dark;
  --bg: #0a0e14;
  --bg-2: #0d1219;
  --card: #12171f;
  --card-2: #161c26;
  --line: #222b38;
  --line-soft: #1b232e;
  --fg: #e8eef5;
  --muted: #8b97a6;
  --muted-2: #6b7787;
  --accent: #5fe3d0;
  --accent-2: #2f8fff;
  --radius: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 5vh 1rem;
  font: 16px/1.6 system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* Ambient background */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60rem 40rem at 15% -10%, rgba(47, 143, 255, .14), transparent 60%),
    radial-gradient(50rem 40rem at 100% 110%, rgba(95, 227, 208, .12), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
}
.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(70% 60% at 50% 40%, #000 40%, transparent 100%);
}

.card {
  width: min(720px, 96vw);
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 4vw, 2.8rem);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, .04) inset,
    0 30px 80px rgba(0, 0, 0, .55);
}

/* Masthead */
.masthead {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
}
.logo {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 14px;
  background: radial-gradient(120% 120% at 20% 10%, rgba(95, 227, 208, .16), rgba(47, 143, 255, .08));
  border: 1px solid var(--line);
}
.logo__img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  display: block;
}
.wordmark { min-width: 0; }
h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -.025em;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tag {
  margin: .15rem 0 0;
  color: var(--muted);
  font-size: .98rem;
}
.badge {
  display: inline-flex;
  align-items: center;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(95, 227, 208, .08);
  padding: .34rem .7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

/* Hero */
.hero { margin-top: 2.4rem; }
.hero__title {
  margin: 0;
  font-size: clamp(1.4rem, 3.6vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -.02em;
}
.lede {
  margin: .7rem 0 0;
  color: var(--muted);
  max-width: 46ch;
}
.cta {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  color: #06231f;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  padding: .8rem 1.4rem;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: transform .12s, box-shadow .15s, filter .15s;
  box-shadow: 0 10px 30px rgba(47, 143, 255, .25);
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn:active { transform: translateY(0); }
.btn--disabled {
  color: var(--muted);
  background: var(--card-2);
  border-color: var(--line);
  box-shadow: none;
  cursor: not-allowed;
}
.cta__note { color: var(--muted-2); font-size: .85rem; }

/* Steps */
.steps { margin-top: 2.4rem; }
.steps ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
  counter-reset: step;
}
.steps li {
  counter-increment: step;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: 1rem 1.1rem;
}
.steps li::before {
  content: counter(step);
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  font-weight: 700;
  font-size: .95rem;
  color: var(--accent);
  background: rgba(95, 227, 208, .1);
  border: 1px solid var(--line);
}
.steps strong { display: block; font-size: .98rem; }
.steps span { color: var(--muted); font-size: .9rem; }

/* Assurance strip */
.assurance { margin-top: 2.2rem; }
.assurance ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .7rem;
}
.assurance li {
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: .9rem 1rem;
  display: grid;
  gap: .25rem;
}
.assurance strong { font-size: .92rem; }
.assurance span { color: var(--muted); font-size: .82rem; }

footer {
  margin-top: 2.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted-2);
  font-size: .82rem;
  text-align: center;
}

@media (max-width: 560px) {
  .masthead { grid-template-columns: auto 1fr; }
  .badge { grid-column: 1 / -1; justify-self: start; }
  .assurance ul { grid-template-columns: 1fr; }
  .cta { gap: .6rem; }
  .btn { width: 100%; }
}