.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 253, 249, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(234, 223, 217, 0.78);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  font-weight: 800;
  color: var(--color-wine-800);
}

.primary-nav a:not(.btn) {
  position: relative;
}

.primary-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  background: var(--color-wine-700);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.primary-nav a:not(.btn):hover::after {
  transform: scaleX(1);
}

.nav-login {
  min-height: 42px;
  padding-inline: 1rem;
}

.mobile-menu-button {
  display: none;
  width: 46px;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #fff;
}

.mobile-menu-button span:not(.sr-only) {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--color-wine-800);
}

.hero-section {
  position: relative;
  overflow: hidden;
  padding: 6rem 0 5rem;
  background:
    radial-gradient(circle at 78% 18%, rgba(107, 16, 32, 0.10), transparent 30rem),
    radial-gradient(circle at 10% 80%, rgba(243, 233, 222, 0.9), transparent 34rem),
    linear-gradient(180deg, #fffdf9 0%, #fbf6ef 100%);
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 1.6rem auto auto 50%;
  width: 58rem;
  height: 58rem;
  border: 1px solid rgba(107, 16, 32, 0.08);
  border-radius: 50%;
  transform: translateX(-5%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(440px, 1.12fr);
  gap: 3.25rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--color-wine-700);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.78rem;
}

.hero-content h1 {
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  color: var(--color-wine-900);
  font-size: clamp(3rem, 5.2vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero-text {
  max-width: 620px;
  margin: 1.45rem 0 0;
  color: var(--color-muted);
  font-size: 1.14rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-visual {
  margin: 0;
  border-radius: 42px;
}

.hero-visual img,
.asset-card img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 44px rgba(74, 7, 19, 0.10));
}

.section {
  padding: 5.5rem 0;
}

.section-heading {
  text-align: center;
  max-width: 840px;
  margin: 0 auto 2.6rem;
}

.card-grid,
.steps-grid {
  display: grid;
  gap: 1.15rem;
}

.four-cols {
  grid-template-columns: repeat(4, 1fr);
}

.info-card,
.step-card,
.frequency-cards article {
  position: relative;
  overflow: hidden;
  padding: 1.55rem;
  border: 1px solid rgba(234, 223, 217, 0.9);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.82);
  box-shadow: var(--shadow-card);
}

.info-card::after,
.step-card::after {
  content: '';
  position: absolute;
  inset: auto -40px -56px auto;
  width: 112px;
  height: 112px;
  border-radius: 50%;
  background: rgba(247, 239, 231, 0.85);
}

.icon-box {
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(107, 16, 32, 0.28);
  border-radius: 16px;
  color: var(--color-wine-700);
  background: #fffdf9;
  font-size: 0.9rem;
  font-weight: 900;
  margin-bottom: 1rem;
}

.info-card h3,
.step-card h3,
.frequency-cards strong {
  margin: 0;
  color: var(--color-wine-900);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.22rem;
  line-height: 1.2;
}

.info-card p,
.step-card p,
.frequency-cards span {
  margin: 0.7rem 0 0;
  color: var(--color-muted);
}

.steps-section {
  background: linear-gradient(180deg, #fffdf9, #ffffff);
}

.steps-grid {
  grid-template-columns: repeat(4, 1fr);
}

.step-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 1rem;
  border-radius: 50%;
  background: var(--color-wine-700);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 22px rgba(107, 16, 32, 0.20);
}

.frequency-section,
.whatsapp-section,
.final-cta {
  background: var(--color-cream-100);
}

.frequency-layout,
.split-section {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 3rem;
  align-items: center;
}

.frequency-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.frequency-cards article {
  min-height: 190px;
  background: #fff;
}

.frequency-cards strong {
  display: block;
  font-size: 1.45rem;
}

.asset-card {
  margin: 0;
}

.whatsapp-section .section-title,
.security-section .section-title {
  max-width: 640px;
}

.security-section {
  background: linear-gradient(180deg, #fffdf9, #ffffff);
}

.security-split {
  grid-template-columns: 0.92fr 1.08fr;
}

.final-cta-card {
  text-align: center;
  padding: clamp(3rem, 6vw, 5rem) 2rem;
  border-radius: 36px;
  background:
    radial-gradient(circle at 50% 0%, rgba(107, 16, 32, 0.06), transparent 26rem),
    linear-gradient(135deg, #fff, #fbf6ef);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.final-cta-card h2 {
  max-width: 760px;
  margin: 0 auto;
  color: var(--color-wine-900);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(2.2rem, 4.6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.final-cta-card p {
  color: var(--color-muted);
}

.demo-note {
  min-height: 1.5rem;
  font-weight: 800;
  color: var(--color-wine-700);
}

.site-footer {
  padding: 2.8rem 0;
  border-top: 1px solid var(--color-border);
  background: #fff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-inner img {
  width: 140px;
}

.footer-inner p {
  max-width: 410px;
  color: var(--color-muted);
}

.footer-inner nav {
  display: flex;
  gap: 1rem;
  color: var(--color-wine-800);
  font-weight: 800;
}

@media (max-width: 1080px) {
  .hero-grid,
  .frequency-layout,
  .split-section,
  .security-split {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    max-width: 820px;
    margin-inline: auto;
  }

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

@media (max-width: 760px) {
  .mobile-menu-button {
    display: block;
  }

  .primary-nav {
    position: absolute;
    left: 12px;
    right: 12px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 18px;
    box-shadow: var(--shadow-card);
  }

  .primary-nav.is-open {
    display: flex;
  }

  .hero-section {
    padding: 3.2rem 0 3rem;
  }

  .hero-content h1 {
    font-size: clamp(2.6rem, 13vw, 4rem);
  }

  .hero-grid {
    gap: 2rem;
  }

  .hero-actions,
  .footer-inner,
  .footer-inner nav {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .four-cols,
  .steps-grid,
  .frequency-cards {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3.4rem 0;
  }

  .frequency-cards article {
    min-height: auto;
  }

  .footer-inner {
    align-items: flex-start;
  }
}