:root {
  --ink: #050505;
  --paper: #fff8ff;
  --magenta: #ff00ff;
  --magenta-soft: #ffb8ff;
  --magenta-pale: #ffe5ff;
  --white: #ffffff;
  --line: 2px solid var(--ink);
  --shadow: 8px 8px 0 var(--ink);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 4px solid var(--white);
  outline-offset: 4px;
}

.site-header {
  min-height: 84px;
  color: var(--white);
  background: var(--ink);
  border-bottom: 2px solid var(--ink);
}

.header-inner,
.hero-inner,
.footer-inner,
.page-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  text-decoration: none;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: block;
  border: 2px solid var(--magenta);
  border-radius: 12px;
}

.brand-name {
  font-size: clamp(1.4rem, 2vw, 2rem);
  font-weight: 950;
  letter-spacing: -0.05em;
}

.site-nav {
  display: flex;
  gap: 24px;
  font-weight: 800;
}

.site-nav a {
  text-underline-offset: 4px;
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 16%, rgba(255,255,255,.42), transparent 21rem),
    var(--magenta);
  border-bottom: 2px solid var(--ink);
}

.hero-inner {
  min-height: calc(100vh - 150px);
  padding: clamp(56px, 8vw, 104px) 0 72px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(330px, .75fr);
  align-items: center;
  gap: clamp(48px, 8vw, 96px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 8px 12px;
  background: var(--white);
  border: var(--line);
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 10px;
  height: 10px;
  content: "";
  background: var(--ink);
  border-radius: 50%;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 28px;
  font-size: clamp(3.65rem, 7.5vw, 7.1rem);
  line-height: .88;
  letter-spacing: -.06em;
  word-spacing: .12em;
  font-weight: 950;
}

.hero-copy {
  max-width: 720px;
  margin-bottom: 30px;
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
  line-height: 1.55;
  font-weight: 560;
}

.hero-title .title-line {
  display: flex;
  gap: .13em;
}

.hero-title .title-line > span {
  display: inline-block;
}

.store-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 44px;
}

.store-button {
  min-height: 58px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  color: var(--white);
  background: var(--ink);
  border: var(--line);
  border-radius: 10px;
  box-shadow: 4px 4px 0 rgba(255,255,255,.72);
  text-decoration: none;
  transition: transform .16s ease, box-shadow .16s ease;
}

.store-button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(255,255,255,.78);
}

.store-button.secondary {
  color: var(--ink);
  background: var(--white);
}

.store-button.unavailable {
  cursor: not-allowed;
  opacity: .68;
  box-shadow: none;
}

.store-button.unavailable:hover {
  transform: none;
}

.store-icon {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
}

.store-copy {
  display: grid;
  line-height: 1.05;
}

.store-copy small {
  margin-bottom: 4px;
  font-size: .64rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.store-copy strong {
  font-size: 1rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature-card {
  min-height: 154px;
  padding: 20px;
  background: rgba(255, 255, 255, .66);
  border: var(--line);
  border-radius: 10px;
  backdrop-filter: blur(8px);
}

.feature-number {
  display: block;
  margin-bottom: 14px;
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .1em;
}

.feature-card h2 {
  margin-bottom: 8px;
  font-size: 1.05rem;
  line-height: 1.15;
}

.feature-card p {
  margin-bottom: 0;
  font-size: .92rem;
  line-height: 1.4;
}

.phone-stage {
  position: relative;
  display: grid;
  place-items: center;
}

.phone-stage::before,
.phone-stage::after {
  position: absolute;
  content: "";
  background: var(--white);
  border: var(--line);
}

.phone-stage::before {
  width: 96px;
  height: 96px;
  top: -28px;
  right: -20px;
  border-radius: 50%;
}

.phone-stage::after {
  width: 74px;
  height: 22px;
  bottom: 36px;
  left: -20px;
  transform: rotate(-8deg);
}

.phone {
  width: min(100%, 390px);
  position: relative;
  z-index: 1;
  padding: 16px;
  color: var(--white);
  background: var(--ink);
  border: 3px solid var(--ink);
  border-radius: 34px;
  box-shadow: 22px 22px 0 rgba(255,255,255,.55);
  transform: rotate(1.5deg);
}

.phone-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 8px 18px;
}

.phone-title {
  font-size: 1.05rem;
  font-weight: 900;
}

.bpm {
  padding: 6px 10px;
  color: var(--ink);
  background: var(--magenta);
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 900;
}

.waveform {
  height: 64px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: #161616;
  border: 1px solid #434343;
  border-radius: 12px;
}

.waveform i {
  width: 4px;
  height: var(--h);
  display: block;
  background: var(--magenta);
  border-radius: 99px;
}

.beat-grid {
  position: relative;
  display: grid;
  grid-template-columns: 52px repeat(8, 1fr);
  grid-template-rows: repeat(4, 42px);
  overflow: hidden;
  background: #151515;
  border: 1px solid #444;
  border-radius: 12px;
}

.row-label {
  display: flex;
  align-items: center;
  padding-left: 8px;
  color: #c9c9c9;
  border-right: 1px solid #555;
  border-bottom: 1px solid #333;
  font-size: .58rem;
  font-weight: 800;
  text-transform: uppercase;
}

.step {
  border-right: 1px solid #343434;
  border-bottom: 1px solid #343434;
}

.step.bar {
  border-right-color: #777;
}

.hit {
  z-index: 2;
  margin: 5px;
  background: var(--magenta);
  border: 1px solid var(--white);
  border-radius: 6px;
  box-shadow: inset 0 -4px 0 rgba(0,0,0,.23);
}

.playhead {
  position: absolute;
  z-index: 3;
  width: 2px;
  top: 0;
  bottom: 0;
  left: 52px;
  background: var(--white);
  box-shadow: 0 0 9px var(--white);
  animation: play 3.2s steps(8, end) infinite;
}

@keyframes play {
  to { transform: translateX(288px); }
}

.transport {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.play-button {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--magenta);
  border: 2px solid var(--white);
  border-radius: 50%;
  font-size: 1.1rem;
}

.transport-copy {
  color: #bdbdbd;
  font-size: .7rem;
  font-weight: 700;
}

.site-footer {
  color: var(--white);
  background: var(--ink);
}

.footer-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: .82rem;
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.page-main {
  min-height: calc(100vh - 160px);
  padding: 72px 0 96px;
  background: var(--magenta-pale);
}

.page-shell {
  max-width: 820px;
  padding: clamp(28px, 5vw, 64px);
  background: var(--white);
  border: var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.page-shell h1 {
  margin-bottom: 24px;
  font-size: clamp(2.8rem, 7vw, 5rem);
}

.page-shell h2 {
  margin-top: 36px;
  margin-bottom: 10px;
  font-size: 1.3rem;
}

.page-shell p,
.page-shell li {
  max-width: 68ch;
}

.page-shell .lede {
  font-size: 1.2rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 28px;
  font-weight: 900;
  text-underline-offset: 4px;
}

@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .phone-stage {
    width: min(460px, 90%);
    margin: 0 auto;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 0;
  }
}

@media (max-width: 620px) {
  .header-inner,
  .hero-inner,
  .footer-inner,
  .page-shell {
    width: min(100% - 28px, 1180px);
  }

  .site-header,
  .header-inner {
    min-height: 72px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .brand-name {
    font-size: 1.4rem;
  }

  .site-nav {
    gap: 14px;
    font-size: .82rem;
  }

  .hero-inner {
    padding-top: 48px;
    gap: 58px;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.2rem);
    line-height: .94;
    letter-spacing: -.05em;
    word-spacing: .18em;
  }

  .hero-title .title-line {
    gap: .16em;
  }

  .store-actions,
  .store-button {
    width: 100%;
  }

  .store-button {
    justify-content: center;
  }

  .phone {
    padding: 12px;
    border-radius: 28px;
    box-shadow: 12px 12px 0 rgba(255,255,255,.58);
  }

  .phone-stage::before,
  .phone-stage::after {
    display: none;
  }

  .beat-grid {
    grid-template-columns: 46px repeat(8, 1fr);
  }

  .playhead {
    left: 46px;
    display: none;
  }

  .footer-inner {
    padding: 22px 0;
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .store-button { transition: none; }
  .playhead { animation: none; }
}