body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top left, rgba(45, 150, 255, 0.16), transparent 32%),
              radial-gradient(circle at bottom right, rgba(255, 111, 97, 0.18), transparent 28%),
              #08101f;
  color: #f8fafc;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px;
}

.hero {
  width: min(1180px, 100%);
  max-width: 1180px;
  margin-bottom: 24px;
  padding: 28px 32px;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 18px;
}

.brand img {
  width: 78px;
  height: auto;
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
  padding: 10px;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #7dd3fc;
  font-size: 0.76rem;
}

.hero h1 {
  font-size: clamp(2rem, 2.5vw, 3rem);
  margin: 8px 0 10px;
  line-height: 1.05;
}

.hero p {
  max-width: 860px;
  font-size: 1rem;
  color: #cbd5e1;
  line-height: 1.75;
}

.card {
  width: min(760px, 100%);
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.2);
  border-radius: 28px;
  padding: 32px;
  display: grid;
  gap: 24px;
}

.controls {
  display: grid;
  gap: 16px;
}

label {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 8px;
  color: #94a3b8;
}

select,
button {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 16px;
  padding: 14px 16px;
  background: rgba(15, 23, 42, 0.86);
  color: #f8fafc;
  font-size: 1rem;
}

select {
  appearance: none;
}

button {
  background: linear-gradient(135deg, #38bdf8 0%, #60a5fa 100%);
  border: none;
  color: #08101f;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

button:hover,
button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(56, 189, 248, 0.28);
}

.result,
.details {
  padding: 24px;
  border-radius: 22px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.result h2,
.details h3 {
  margin-top: 0;
}

.result p,
.details p,
.details li {
  color: #cbd5e1;
}

.result p strong,
.details li strong {
  color: #e2e8f0;
}

.details ul {
  padding-left: 20px;
  margin-top: 12px;
}

.details li {
  margin-bottom: 10px;
}

.footer {
  width: min(760px, 100%);
  margin-top: 14px;
  text-align: center;
  color: #94a3b8;
  font-size: 0.95rem;
}

@media (max-width: 760px) {
  body {
    padding: 16px;
  }

  .hero,
  .card {
    padding: 22px;
  }

  .brand {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero h1 {
    font-size: 2rem;
  }
}