/* Phone / tablet — only loads at max-width 900px (desktop sheet is separate). */

@media (max-width: 900px) {
  html {
    scroll-padding-top: calc(max(1rem, env(safe-area-inset-top)) + 4.25rem);
  }

  .feature-stack {
    display: block;
    padding-top: clamp(3.5rem, 12svh, 5.75rem);
  }

  #shield {
    scroll-margin-top: calc(max(1rem, env(safe-area-inset-top)) + 4.25rem);
  }

  main {
    padding-left: clamp(1rem, 4.5vw, 1.35rem);
    padding-right: clamp(1rem, 4.5vw, 1.35rem);
  }

  .site-header {
    padding-left: max(0.85rem, env(safe-area-inset-left));
    padding-right: max(0.85rem, env(safe-area-inset-right));
    isolation: isolate;
  }

  .site-header::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: calc(max(1rem, env(safe-area-inset-top)) + 4.35rem);
    background: linear-gradient(
      180deg,
      #000000 0%,
      #000000 58%,
      rgba(0, 0, 0, 0) 100%
    );
    z-index: 0;
    pointer-events: none;
  }

  .site-header .brand,
  .site-header .header-app-store-badge-link {
    position: relative;
    z-index: 1;
  }

  .header-app-store-badge-link .app-store-badge {
    height: 38px;
  }

  .hero {
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    min-height: 100vh;
    min-height: 100svh;
    height: 100vh;
    height: 100svh;
    max-height: 100vh;
    max-height: 100svh;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 0;
    overflow: hidden;
  }

  .hero-ambient {
    opacity: 0.04;
  }

  .hero-flanks {
    top: calc(max(1rem, env(safe-area-inset-top)) + 2.5rem);
    bottom: max(0.75rem, env(safe-area-inset-bottom));
  }

  .hero-flank-slot {
    width: min(23vw, 108px);
  }

  .hero-flank-slot--left {
    left: max(-0.2rem, calc(-0.15rem + env(safe-area-inset-left) * -0.15));
    transform: scale(0.85);
    transform-origin: left center;
  }

  .hero-flank-slot--right {
    right: max(-0.2rem, calc(-0.15rem + env(safe-area-inset-right) * -0.15));
    transform: scale(0.85);
    transform-origin: right center;
  }

  .hero-flank {
    filter: drop-shadow(0 0 16px rgba(255, 255, 255, 0.085));
  }

  .hero-flank--left,
  .hero-flank--right {
    animation-duration: 2.6s, 5s;
  }

  .hero-flank--left {
    animation-name: hands-enter-left, hands-reach-left-mobile;
  }

  .hero-flank--right {
    animation-name: hands-enter-right, hands-reach-right-mobile;
  }

  .hero-inner {
    position: relative;
    z-index: 2;
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding:
      calc(max(1rem, env(safe-area-inset-top)) + 3.65rem + clamp(3.5rem, 15svh, 7.25rem))
      clamp(1rem, 4.5vw, 1.35rem)
      max(1rem, env(safe-area-inset-bottom));
    min-height: 0;
    box-sizing: border-box;
  }

  .hero-copy {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .hero-inner .kicker {
    width: 100%;
    margin-bottom: clamp(1rem, 3svh, 1.35rem);
    text-align: center;
  }

  .hero-title {
    width: 100%;
    max-width: 100%;
    margin-inline: auto;
    margin-top: clamp(0.4rem, 1.8svh, 0.75rem);
    padding-inline: clamp(0.5rem, 3vw, 1rem);
    font-size: clamp(2.45rem, 12vw, 3.45rem);
    margin-bottom: 0;
    line-height: 1.05;
    letter-spacing: -0.03em;
    white-space: nowrap;
    text-align: center;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.1);
  }

  .hero-lead {
    font-size: clamp(1.02rem, 4.1vw, 1.13rem);
    line-height: 1.58;
    display: block;
    width: max-content;
    max-width: min(21.25rem, calc(100% - clamp(2.5rem, 36vw, 5.75rem)));
    margin-top: clamp(2.6rem, 11.5svh, 5.05rem);
    margin-bottom: 0;
    margin-inline: auto;
  }

  .hero-lead-core {
    display: block;
    width: 100%;
    max-width: 100%;
    text-align: left;
  }

  .hero-lead-row {
    display: block;
    width: auto;
    max-width: 100%;
    transform: none;
  }

  .hero-lead-row--1 {
    padding-left: 0;
  }

  .hero-lead-row--2 {
    padding-left: clamp(0.55rem, 3.2vw, 0.95rem);
  }

  .hero-lead-row--3 {
    display: block;
    width: 100%;
    padding-left: 0;
    margin-top: 0.02em;
    text-align: center;
  }

  .scroll-cue {
    margin-top: auto;
    padding-top: clamp(1.25rem, 4svh, 2rem);
    padding-bottom: max(
      clamp(1.35rem, 7svh, 3rem),
      calc(0.5rem + env(safe-area-inset-bottom))
    );
  }

  .scroll-cue-label {
    margin-bottom: 1.05rem;
    max-width: 14rem;
    line-height: 1.45;
    font-size: 0.66rem;
    letter-spacing: 0.17em;
  }

  .scroll-cue-mark {
    width: clamp(4rem, 16vw, 5.5rem);
    filter: drop-shadow(0 0 26px rgba(255, 255, 255, 0.22));
  }

  .scroll-cue-chevron {
    height: 2.85rem;
  }

  .feature {
    gap: 1.15rem;
    padding: clamp(2.75rem, 9vw, 3.75rem) 0;
    text-align: center;
  }

  .feature--reversed .feature-copy,
  .feature--reversed .feature-art {
    order: unset;
  }

  .feature-copy {
    order: 1;
    align-items: center;
  }

  .feature-art {
    order: 2;
    margin-top: 0.35rem;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-inline: 0.25rem;
  }

  .feature-copy h2 {
    font-size: clamp(1.5rem, 6.2vw, 1.95rem);
    margin-bottom: 0.55rem;
    padding-inline: 0.35rem;
    line-height: 1.12;
  }

  .feature-copy p {
    margin-inline: auto;
    max-width: 20rem;
    line-height: 1.58;
    font-size: clamp(0.94rem, 3.8vw, 1.02rem);
  }

  .feature-art,
  .feature-art--from-left,
  .feature-art--from-right {
    opacity: 0;
    transform: translateY(22px) scale(0.98);
    filter: blur(4px);
    transition:
      opacity 1.05s var(--ease),
      transform 1.05s var(--ease),
      filter 0.95s var(--ease);
    transition-delay: 0.15s;
  }

  .feature-art.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
    transition-delay: 0.2s;
  }

  .feature-copy.is-entering {
    opacity: 0;
    transform: translateY(12px);
    filter: blur(3px);
  }

  .feature-copy.is-entering.is-visible {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
    transition-delay: 0.05s;
  }

  .feature-art img {
    display: block;
    width: auto;
    height: auto;
    max-width: min(68vw, 300px);
    max-height: min(52svh, 420px);
    margin-inline: auto;
    object-fit: contain;
  }

  .feature-ambient {
    display: none;
  }

  .closing {
    padding: clamp(3rem, 9vw, 4rem) 0 1.75rem;
  }

  .closing-title {
    font-size: clamp(1.65rem, 6.5vw, 2.1rem);
    padding-inline: 0.5rem;
  }

  .app-store-badge {
    width: min(200px, 70vw);
  }
}

@media (max-width: 640px) {
  .hero-flank-slot {
    width: min(20vw, 92px);
  }

  .hero-flank-slot--left,
  .hero-flank-slot--right {
    transform: scale(0.82);
  }

  .hero-inner {
    padding-top: calc(max(1rem, env(safe-area-inset-top)) + 3.45rem + clamp(3.15rem, 14svh, 6.5rem));
  }

  .hero-title {
    font-size: clamp(2.2rem, 12.5vw, 3.15rem);
  }

  .hero-lead {
    margin-top: clamp(2.35rem, 10.5svh, 4.65rem);
    max-width: min(20.5rem, calc(100% - clamp(2.75rem, 40vw, 6.25rem)));
  }

  .hero-lead-row--2 {
    padding-left: clamp(0.5rem, 3vw, 0.85rem);
  }

  .hero-lead-row--3 {
    text-align: center;
    padding-left: 0;
  }

  .scroll-cue {
    padding-bottom: max(
      clamp(1.5rem, 8svh, 3.25rem),
      calc(0.65rem + env(safe-area-inset-bottom))
    );
  }
}

@keyframes hands-reach-left-mobile {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scaleX(1);
  }
  50% {
    transform: translate3d(0, 0, 0) scaleX(1.025);
  }
}

@keyframes hands-reach-right-mobile {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scaleX(1);
  }
  50% {
    transform: translate3d(0, 0, 0) scaleX(1.025);
  }
}