:root {
  color-scheme: dark;
  color: #f5f7fb;
  background: #090b12;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  background: radial-gradient(circle at top left, rgba(55, 118, 255, 0.18), transparent 32%),
    radial-gradient(circle at bottom right, rgba(0, 210, 255, 0.12), transparent 24%),
    #090b12;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(9, 11, 18, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.navbar-logo {
  height: 40px;
  width: auto;
  transition: opacity 180ms ease;
}

.navbar-logo:hover {
  opacity: 0.8;
}

.navbar-menu {
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.navbar-link {
  color: #d7dbe8;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 180ms ease;
  position: relative;
}

.navbar-link:hover {
  color: #ffffff;
}

.navbar-link.active {
  color: #7db8ff;
}

.navbar-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background: #7db8ff;
  border-radius: 1px;
}

.page-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
  padding: 48px 0 32px;
}

.eyebrow,
.section-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #7db8ff;
  font-size: 0.8rem;
  margin: 0 0 16px;
}

.hero-content h1,
.section-intro h2 {
  margin: 0;
  font-size: clamp(2.5rem, 2.8vw, 3.8rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.hero-copy,
.section-intro p,
.footer p,
.feature-card p,
.privacy-item p,
.step-card p,
.visual-note {
  color: #d7dbe8;
}

.hero-copy {
  max-width: 34rem;
  margin: 24px 0 0;
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  color: #ffffff;
  background: linear-gradient(135deg, #4f8bff 0%, #4257ff 100%);
  box-shadow: 0 16px 40px rgba(15, 45, 101, 0.22);
}

.button-secondary {
  color: #cfe0ff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.visual-card {
  width: min(100%, 100%);
  max-width: 420px;
  padding: 28px;
  border-radius: 32px;
  background: rgba(12, 17, 33, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

.visual-title {
  margin: 0 0 20px;
  font-size: 1rem;
  color: #8abfff;
  letter-spacing: 0.06em;
}

.visual-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 20px;
}

.visual-grid span {
  display: inline-flex;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
}

.visual-note {
  margin-top: 18px;
  font-size: 0.95rem;
}

.hero-footer {
  text-align: center;
  padding: 32px 0;
  color: #d7dbe8;
}

.section {
  padding: 44px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 32px;
  padding: 44px 32px;
  margin-top: 32px;
}

.section-intro {
  max-width: 720px;
}

.feature-grid,
.steps-grid,
.privacy-list {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}

.feature-grid,
.privacy-list {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

#app-gallery {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step-card,
.feature-card,
.privacy-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 24px;
  padding: 24px;
}

.app-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 16px;
  border-radius: 18px;
}

.app-icon-frame {
  width: 92px;
  height: 92px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 14px 28px rgba(0, 0, 0, 0.22);
}

.app-card-logo {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.app-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.45;
}

.app-card-action {
  margin-top: auto;
  padding-top: 16px;
}

.app-card .button {
  min-height: 38px;
  padding: 0 16px;
  font-size: 0.88rem;
}

.step-card {
  text-align: center;
}

.step-card strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  margin-bottom: 18px;
  border-radius: 18px;
  font-size: 1.25rem;
  background: linear-gradient(135deg, rgba(79, 139, 255, 0.16), rgba(66, 87, 255, 0.16));
  color: #cfe0ff;
}

.step-card h4,
.feature-card h3,
.privacy-item h3 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.footer {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #9fb6dc;
  font-size: 0.95rem;
}

.faq-section {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 24px;
  padding: 28px;
  transition: background 180ms ease, border-color 180ms ease;
}

.faq-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

.faq-item h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
  color: #cfe0ff;
}

.faq-item p {
  margin: 0;
  color: #d7dbe8;
  font-size: 0.95rem;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 32px;
  }

  .hero-visual {
    justify-content: stretch;
  }

  #app-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .page-shell {
    padding: 24px 16px 32px;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .button {
    width: 100%;
  }

  .navbar-menu {
    gap: 16px;
  }

  .navbar-link {
    font-size: 0.85rem;
  }

  #app-gallery {
    grid-template-columns: 1fr;
  }
}