:root {
  color-scheme: light dark;
  --background: #f7f7f4;
  --surface: #ffffff;
  --text: #1f2428;
  --muted: #5f6b73;
  --line: #d8ddd8;
  --accent: #1c6b55;
  --accent-strong: #124d3e;
  --accent-soft: #e9f3ef;
  --secondary: #315f87;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.75;
}

main {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 36px;
}

nav a,
.button-link {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 12px;
  background: var(--surface);
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

h1,
h2,
h3 {
  line-height: 1.35;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h2 {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

p,
li {
  font-size: 1rem;
}

.lead {
  color: var(--muted);
  font-size: 1.08rem;
}

.notice {
  border-left: 4px solid var(--accent);
  background: var(--surface);
  padding: 14px 16px;
  margin: 28px 0;
}

.meta {
  color: var(--muted);
  margin: 0 0 20px;
}

footer {
  margin-top: 48px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  color: var(--muted);
  font-size: 0.92rem;
}

a {
  color: var(--accent);
}

.product-page {
  width: min(1180px, calc(100% - 32px));
}

.product-page h2 {
  margin: 0;
  border-top: 0;
  padding-top: 0;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
}

.product-hero {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 18px 0 36px;
}

.app-icon {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  box-shadow: 0 14px 32px rgb(28 107 85 / 18%);
}

.product-heading {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--secondary);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.subtitle {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: clamp(1.1rem, 2.3vw, 1.35rem);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.primary-link {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.app-store-section {
  border-top: 1px solid var(--line);
  padding: 34px 0 8px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 18px;
}

.section-heading p {
  margin: 8px 0 0;
  color: var(--muted);
}

.screenshot-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 280px);
  gap: 18px;
  overflow-x: auto;
  padding: 4px 2px 18px;
  scroll-snap-type: x proximity;
}

.screenshot-strip figure {
  margin: 0;
  scroll-snap-align: start;
}

.screenshot-strip img,
.preview-video {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 24px rgb(31 36 40 / 10%);
}

.screenshot-strip figcaption {
  min-height: 3.2em;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.media-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
  gap: 28px;
  align-items: start;
}

.preview-video {
  max-width: 320px;
  justify-self: end;
}

.description-copy {
  max-width: 800px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  margin: 20px 0 26px;
  padding: 0;
  list-style: none;
}

.feature-list li {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 10px 12px;
  overflow-wrap: anywhere;
}

.app-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0 0;
}

.app-details div {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.app-details dt {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.app-details dd {
  margin: 4px 0 0;
}

.footer-nav {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

@media (max-width: 720px) {
  .product-hero {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 14px;
    padding-top: 8px;
  }

  .app-icon {
    width: 82px;
    height: 82px;
    border-radius: 18px;
  }

  .screenshot-strip {
    grid-auto-columns: minmax(198px, 72vw);
  }

  .media-section,
  .feature-list,
  .app-details {
    grid-template-columns: 1fr;
  }

  .preview-video {
    max-width: min(320px, 100%);
    justify-self: start;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #151817;
    --surface: #202624;
    --text: #eef2ef;
    --muted: #a9b5ad;
    --line: #39423e;
    --accent: #7fd0b1;
    --accent-strong: #9ce0ca;
    --accent-soft: #1e312b;
    --secondary: #9dc5ef;
  }

  .primary-link {
    color: #10201b;
  }
}