:root {
  --brand-primary: #4c5e6b;
  --brand-accent: #fce9a5;
  --bg-page: #f7f9fb;
  --bg-surface: #ffffff;
  --bg-soft: #eef2f5;
  --bg-accent-soft: #fff7da;
  --text-primary: #1f2a33;
  --text-secondary: #5f6f7a;
  --text-muted: #8a98a3;
  --border-light: #e4e9ee;
  --border-default: #d3dce3;
  --border-strong: #b7c4ce;
  --success: #1f9d72;
  --warning: #e6a23c;
  --error: #d64545;
  --info: #3a7ca5;
}

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at top left, rgba(252, 233, 165, 0.65), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(58, 124, 165, 0.12), transparent 22%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(247, 249, 251, 1));
}

.hero-grid::before {
  content: "";
  position: absolute;
  inset: 2rem auto auto 50%;
  width: 28rem;
  height: 28rem;
  border-radius: 9999px;
  background: rgba(252, 233, 165, 0.25);
  filter: blur(90px);
  transform: translateX(-10%);
  z-index: -1;
}

.stack-card {
  border: 1px solid var(--border-default);
  border-radius: 1.75rem;
  background: linear-gradient(180deg, #ffffff 0%, #fbfcfd 100%);
  padding: 1.5rem;
}

.stack-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.stack-title {
  margin-top: 0.85rem;
  color: var(--text-primary);
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.2;
}

.stack-copy {
  margin-top: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.flow-card {
  border: 1px solid var(--border-default);
  border-radius: 1.5rem;
  background: linear-gradient(180deg, #ffffff 0%, #f7f9fb 100%);
  padding: 1.25rem;
}

.flow-index {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.flow-title {
  margin-top: 0.8rem;
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 800;
}

.flow-copy {
  margin-top: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.projection-card {
  border-radius: 1.5rem;
  padding: 1.25rem;
}

.projection-label {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.projection-value {
  margin-top: 0.75rem;
  font-size: 1.9rem;
  font-weight: 800;
  line-height: 1.1;
}