.landing {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}
.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}
.nav-brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--brand) 0%, #6fa0ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: .95rem;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
}
.nav-link:hover, .nav-link:focus-visible { color: var(--text); }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle:hover, .theme-toggle:focus-visible { color: var(--text); }

.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.mobile-menu-toggle .icon-close { display: none; }
.mobile-menu-toggle[aria-expanded="true"] .icon-menu { display: none; }
.mobile-menu-toggle[aria-expanded="true"] .icon-close { display: block; }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 0 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.mobile-menu[hidden] { display: none; }
.mobile-menu-link {
  color: var(--text);
  text-decoration: none;
  font-size: .95rem;
  font-weight: 600;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line-soft);
  min-height: 44px;
  display: flex;
  align-items: center;
}
.mobile-menu-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}
.mobile-menu-actions .primary-button,
.mobile-menu-actions .secondary-button {
  width: 100%;
}

.hero {
  padding: 80px 0 60px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--brand-wash);
  color: var(--brand);
  font-size: .72rem;
  font-weight: 650;
  letter-spacing: .01em;
  margin-bottom: 24px;
}
.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}
.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  color: var(--text);
}
.hero h1 strong {
  background: linear-gradient(135deg, var(--brand) 0%, #8ab6ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}
.hero-sub {
  font-size: 1.1rem;
  line-height: 1.55;
  color: var(--muted);
  margin: 0 0 16px;
  max-width: 560px;
}
.hero-complement {
  font-size: .95rem;
  line-height: 1.55;
  color: var(--muted-2);
  margin: 0 0 32px;
  max-width: 540px;
}
.hero-ctas {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-badges {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.hero-badge {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  font-size: .92rem;
  font-weight: 600;
}
.hero-badge svg { flex-shrink: 0; color: var(--brand); }

.section {
  padding: 80px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-eyebrow {
  color: var(--brand);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 16px;
}
.section-sub {
  color: var(--muted);
  font-size: 1rem;
  max-width: 620px;
  margin: 0 auto 12px;
  line-height: 1.5;
}
.section-sub:last-child { margin-bottom: 0; }
.section-footnote {
  text-align: center;
  color: var(--muted-2);
  font-size: .88rem;
  max-width: 640px;
  margin: 32px auto 0;
  line-height: 1.5;
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.problem-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}
.problem-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--info-wash);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--info);
  margin-bottom: 20px;
}
.problem-card h3 {
  color: var(--text);
  font-size: 1.05rem;
  margin: 0 0 10px;
}
.problem-card p {
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.55;
  margin: 0;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.benefit-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}
.benefit-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--brand-wash);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  margin-bottom: 20px;
}
.benefit-card h3 {
  color: var(--text);
  font-size: 1.05rem;
  margin: 0 0 10px;
}
.benefit-card p {
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.55;
  margin: 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.step-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
  position: relative;
}
.step-number {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--brand);
  color: var(--on-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 18px;
}
.step-card h3 {
  color: var(--text);
  font-size: 1rem;
  margin: 0 0 8px;
}
.step-card p {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.55;
  margin: 0;
}

.personas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.persona-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}
.persona-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 650;
  margin-bottom: 18px;
}
.persona-tag.digital { background: var(--brand-wash); color: var(--brand); }
.persona-tag.hybrid { background: var(--warn-wash); color: var(--warn); }
.persona-tag.external { background: var(--good-wash); color: var(--good); }
.persona-card h3 {
  color: var(--text);
  font-size: 1.1rem;
  margin: 0 0 10px;
}
.persona-card p {
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.55;
  margin: 0;
}

.features-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-group {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px;
}
.feature-group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.feature-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 10px;
  background: var(--brand-wash);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
}
.feature-group h3 {
  color: var(--text);
  font-size: .98rem;
  margin: 0;
}
.feature-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.feature-group li {
  color: var(--muted);
  font-size: .86rem;
  line-height: 1.5;
  padding-left: 16px;
  position: relative;
}
.feature-group li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.privacy-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.privacy-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--brand-wash);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  margin-bottom: 18px;
}
.privacy-card h3 {
  color: var(--text);
  font-size: 1.02rem;
  margin: 0 0 10px;
}
.privacy-card p {
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.55;
  margin: 0;
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.quality-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px;
}
.quality-card h3 {
  color: var(--text);
  font-size: 1rem;
  margin: 0 0 10px;
}
.quality-card p {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.55;
  margin: 0;
}

.security-simple-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.security-simple-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  font-size: .84rem;
  font-weight: 600;
}
.security-simple-item svg { flex-shrink: 0; color: var(--brand); }

.cta-section {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 48px;
  text-align: center;
}
.cta-section h2 {
  font-size: clamp(1.6rem, 2.5vw, 2rem);
  line-height: 1.2;
  color: var(--text);
  margin: 0 0 14px;
}
.cta-section p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto 24px;
  line-height: 1.5;
}
.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 32px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.6;
  margin: 14px 0 0;
  max-width: 320px;
}
.footer-nav-brand { margin: 0; padding: 0; }
.footer-col h4 {
  color: var(--text);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin: 0 0 16px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  color: var(--muted);
  text-decoration: none;
  font-size: .88rem;
}
.footer-col a:hover, .footer-col a:focus-visible { color: var(--text); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.footer-copy {
  color: var(--muted-2);
  font-size: .82rem;
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 32px -16px rgba(0, 0, 0, 0.4);
  transition: color .15s ease, transform .15s ease;
  z-index: 20;
}
.back-to-top:hover, .back-to-top:focus-visible { color: var(--text); transform: translateY(-2px); }
.back-to-top[hidden] { display: none; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top { transition: none; }
  html { scroll-behavior: auto; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .mobile-menu-toggle { display: inline-flex; }
  .nav-cta .primary-button, .nav-cta .secondary-button { display: none; }
  .mobile-menu { display: flex; }

  .hero, .features-groups { grid-template-columns: 1fr; }
  .problems-grid, .benefits-grid, .personas-grid, .steps-grid,
  .quality-grid, .footer-grid, .privacy-grid { grid-template-columns: 1fr; }
  .security-simple-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 32px 0; gap: 32px; }
  .section { padding: 48px 0; }
  .cta-section { padding: 32px 24px; }
}

@media (max-width: 560px) {
  .security-simple-grid { grid-template-columns: 1fr; }
}