:root {
  --ca-ink: #0f172a;
  --ca-accent: #0d9488;
  --ca-accent-hover: #0f766e;
  --ca-bg: #f5f7fa;
  --ca-card: #ffffff;
  --ca-muted: #64748b;
  --ca-border: #e2e8f0;
  --ca-soft: #f1f5f9;
}
.ca-body {
  background: var(--ca-bg);
  color: var(--ca-ink);
  min-height: 100vh;
}
.ca-header {
  background: var(--ca-card);
  border-color: var(--ca-border) !important;
}
.ca-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 3.5rem; /* ~56px */
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}
.ca-brand {
  min-width: 0;
  flex: 1 1 auto;
}
.ca-brand-name {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ca-ink);
  letter-spacing: -0.02em;
}
.ca-brand-tag {
  margin-left: 0.65rem;
  color: var(--ca-muted);
  font-size: 0.8rem;
  font-weight: 500;
}
.ca-nav {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 1rem;
}
.ca-nav a {
  color: var(--ca-accent);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}
.ca-nav a:hover { text-decoration: underline; color: var(--ca-accent-hover); }
.ca-nav-desktop {
  display: none;
}
.ca-nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 auto;
  border: 1px solid var(--ca-border);
  border-radius: 0.5rem;
  background: var(--ca-card);
  color: var(--ca-ink);
  padding: 0;
}
.ca-nav-toggle-bars,
.ca-nav-toggle-bars::before,
.ca-nav-toggle-bars::after {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  position: relative;
}
.ca-nav-toggle-bars::before,
.ca-nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.ca-nav-toggle-bars::before { top: -6px; }
.ca-nav-toggle-bars::after { top: 6px; }
.ca-nav-sheet .ca-nav-sheet-links {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.15rem;
  margin-bottom: 1.25rem;
}
.ca-nav-sheet .ca-nav-sheet-links a {
  display: block;
  padding: 0.7rem 0.25rem;
  border-bottom: 1px solid var(--ca-border);
  font-size: 1.05rem;
}
.ca-nav-sheet .ca-nav-sheet-child {
  padding-left: 0.85rem !important;
  font-size: 0.95rem !important;
  font-weight: 500 !important;
}
.ca-nav-sheet-legal a { color: var(--ca-accent); }
@media (min-width: 768px) {
  .ca-header-inner {
    min-height: 3.75rem; /* ~60px */
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
  }
  .ca-nav-desktop {
    display: flex;
    flex: 0 1 auto;
    justify-content: flex-end;
    max-width: min(42rem, 70%);
    overflow-x: auto;
  }
  .ca-nav-toggle {
    display: none;
  }
}
.ca-footer {
  background: var(--ca-card);
  border-color: var(--ca-border) !important;
}
.ca-footer a { color: var(--ca-accent); }

.ca-plan {
  background: var(--ca-card);
  border: 1px solid var(--ca-border);
  border-radius: 0.5rem;
}
.ca-plan-featured {
  border-color: var(--ca-accent);
  box-shadow: 0 0 0 1px var(--ca-accent);
}
.ca-plan-price {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.ca-usage {
  background: var(--ca-card);
  border: 1px solid var(--ca-border);
  border-radius: 0.5rem;
}
.btn-primary {
  background: var(--ca-accent);
  border-color: var(--ca-accent);
}
.btn-primary:hover {
  background: var(--ca-accent-hover);
  border-color: var(--ca-accent-hover);
}

/* How it works */
.ca-hiw-hero {
  background:
    linear-gradient(180deg, rgba(13, 148, 136, 0.08), transparent 60%),
    var(--ca-bg);
  border-bottom: 1px solid var(--ca-border);
}
.ca-hiw-kicker {
  color: var(--ca-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.ca-hiw-step {
  background: var(--ca-card);
  border: 1px solid var(--ca-border);
  border-radius: 0.5rem;
  padding: 1.25rem 1.25rem 1.35rem;
}
.ca-hiw-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  margin-bottom: 0.75rem;
  border-radius: 999px;
  background: rgba(13, 148, 136, 0.12);
  color: var(--ca-accent-hover);
  font-size: 0.85rem;
  font-weight: 700;
}
.ca-hiw-band {
  background: var(--ca-soft);
  border-block: 1px solid var(--ca-border);
}
.ca-hiw-lanes li {
  display: grid;
  gap: 0.25rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--ca-border);
}
.ca-hiw-lanes li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.ca-hiw-lanes li:first-child {
  padding-top: 0;
}
.ca-hiw-cta {
  background: var(--ca-card);
  border: 1px solid var(--ca-border);
  border-radius: 0.5rem;
}