.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

header#top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.2s ease;
}

header#top .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  position: relative;
}

header#top.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

section {
  padding: var(--space-7) 0;
  scroll-margin-top: var(--header-height);
}

.section-header {
  max-width: 640px;
  margin: 0 auto var(--space-6);
  text-align: center;
}

#hero .hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  text-align: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

#hero .hero-actions .btn-group {
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
  max-width: 320px;
}

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

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

.hero-media img {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(20, 23, 26, 0.06);
  box-shadow: var(--shadow-md);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.screenshots-grid {
  display: flex;
  flex-direction: row;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  gap: var(--space-4);
  padding-bottom: var(--space-3);
  /* hide scrollbar but keep functionality */
  scrollbar-width: none;
}

.screenshots-grid::-webkit-scrollbar {
  display: none;
}

.screenshots-grid .screenshot-card {
  flex: 0 0 72vw;
  max-width: 210px;
  scroll-snap-align: start;
}

@media (min-width: 768px) {
  .screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 210px));
    justify-content: center;
    overflow-x: visible;
    scroll-snap-type: none;
    padding-bottom: 0;
  }

  .screenshots-grid .screenshot-card {
    flex: unset;
    max-width: unset;
    scroll-snap-align: unset;
  }
}

.install-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.detail-card {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.ios-card {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-6);
  text-align: center;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

footer {
  padding-bottom: var(--space-6);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  /* gap: var(--space-2); */
}

.footer-brand p {
  display: flex;
  align-items: center;
  flex-flow: column;
  justify-content: center;
  font-size: var(--fs-sm);
  color: var(--text-light);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
}

.footer-copy {
  display: flex;
  justify-content: center;
  font-size: var(--fs-sm);
  color: var(--text-light);
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  #hero .hero-inner {
    flex-direction: row;
    text-align: left;
    align-items: center;
  }

  .hero-copy {
    max-width: 640px;
  }

  .hero-actions {
    align-items: flex-start;
  }

  #hero .hero-actions .btn-group {
    display: flex;
    width: auto;
    max-width: none;
  }

  #hero .hero-actions .btn-group .btn {
    width: auto;
  }

  .hero-media {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    position: static;
    padding: 0;
    border: none;
    box-shadow: none;
    background: transparent;
  }

  .hamburger {
    display: none;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .footer-copy {
    white-space: nowrap;
  }
}