.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.25s ease, box-shadow 0.25s ease, backdrop-filter 0.25s ease;
}

.site-header.scrolled {
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(18px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
}

.brand img {
  height: 44px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  font-weight: 500;
  color: #ffffff;
}

.site-header.scrolled .site-nav a:not(.btn) {
  color: var(--ratio-text);
}

.nav-cta {
  margin-left: 8px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: #fff;
  margin: 5px 0;
  transition: all 0.2s ease;
}

.site-header.scrolled .nav-toggle span {
  background: var(--ratio-text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 14px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #2583ff 0%, #1f4ed8 100%);
  box-shadow: 0 12px 28px rgba(37, 131, 255, 0.25);
}

.btn-secondary {
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.05);
}

.site-header.scrolled .btn-secondary {
  color: var(--ratio-text);
  border-color: rgba(30,42,58,0.18);
  background: rgba(15,23,42,0.02);
}

.feature-grid,
.value-grid,
.pricing-grid {
  display: grid;
  gap: 24px;
}

.feature-grid {
  grid-template-columns: repeat(3, 1fr);
}

.feature-card,
.value-card,
.pricing-card {
  background: var(--ratio-card);
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: 22px;
  box-shadow: var(--shadow-card);
}

.feature-card {
  padding: 28px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #63bdf7, #1f4ed8);
}

.feature-card h3,
.value-card h3,
.pricing-card h3 {
  margin: 0 0 10px;
  font-size: 1.4rem;
  line-height: 1.2;
}

.feature-card p,
.value-card p,
.pricing-card p {
  margin: 0;
  color: var(--ratio-muted);
}

.value-grid {
  grid-template-columns: repeat(2, 1fr);
}

.value-card {
  padding: 28px;
}

.pricing-grid {
  grid-template-columns: repeat(3, 1fr);
  align-items: stretch;
}

.pricing-card {
  text-align: center;
  padding: 34px 24px;
  position: relative;
}

.pricing-card.featured {
  border-color: rgba(31,78,216,0.25);
  box-shadow: 0 18px 40px rgba(31,78,216,0.12);
}

.badge {
  display: inline-block;
  margin: 0 0 14px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #1f4ed8;
  font-weight: 700;
}

.price {
  margin: 0;
  font-size: 2.8rem;
  line-height: 1;
  font-weight: 800;
  color: var(--ratio-navy);
}

.price span {
  font-size: 1rem;
  color: var(--ratio-muted);
  font-weight: 600;
}

.price-detail {
  margin-top: 10px !important;
}

.pricing-cta {
  margin-top: 32px;
  text-align: center;
}