:root {
  color-scheme: light;
  --bg: #f4f8fb;
  --surface: #ffffff;
  --text: #111827;
  --muted: #5e6b77;
  --line: #d7e1ea;
  --accent: #1d62b7;
  --accent-strong: #0f3f7a;
  --soft: #dfeeff;
}

* {
  box-sizing: border-box;
}

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

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

main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

main.narrow {
  width: min(860px, calc(100% - 32px));
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0 34px;
}

.brand {
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

nav,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

nav a,
.actions a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--accent-strong);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  padding: 9px 12px;
  text-decoration: none;
}

nav a.store-link,
.actions a.primary-action,
.install-panel .primary-action {
  border-color: transparent;
  background: var(--accent-strong);
  color: #fff;
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(320px, 1.18fr);
  gap: clamp(24px, 5vw, 58px);
  align-items: center;
  padding: 22px 0 46px;
}

.hero-copy {
  display: grid;
  gap: 16px;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  margin: 0;
  max-width: 560px;
  font-size: clamp(38px, 7vw, 70px);
  line-height: 1.06;
}

h2 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.35;
}

h3 {
  margin: 24px 0 8px;
  font-size: 17px;
}

p {
  margin: 0 0 14px;
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  max-width: 620px;
  color: var(--muted);
  font-size: 18px;
}

.phone-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 16px;
  min-height: 440px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, #e5f1ff 0%, #ffffff 58%, #eaf4ee 100%);
}

.phone {
  width: 100%;
  max-height: 620px;
  object-fit: contain;
  border: 1px solid rgba(16, 63, 122, 0.16);
  border-radius: 8px;
  box-shadow: 0 18px 42px rgba(21, 46, 76, 0.16);
}

.phone.secondary {
  transform: translateY(32px);
}

.feature-grid,
.two-column,
.install-panel {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.feature-grid {
  grid-template-columns: repeat(3, 1fr);
}

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

.install-panel {
  grid-template-columns: 1fr auto;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--accent-strong);
  color: #fff;
  padding: 26px;
}

.feature-grid article,
.two-column > div,
.content-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 24px;
}

.install-panel h2,
.install-panel p {
  color: #fff;
}

.install-panel .eyebrow {
  color: #b9d7ff;
}

.install-panel .primary-action {
  background: #fff;
  color: var(--accent-strong);
  border-radius: 8px;
  font-weight: 800;
  padding: 11px 14px;
  text-decoration: none;
  white-space: nowrap;
}

.feature-grid p,
.two-column p,
.content-block p {
  color: var(--muted);
}

.page-title {
  padding: 16px 0 24px;
}

.page-title h1 {
  margin-top: 8px;
  font-size: clamp(34px, 6vw, 58px);
}

.content-block {
  margin-top: 14px;
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 28px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 820px) {
  main,
  main.narrow {
    width: min(100% - 24px, 640px);
    padding-top: 16px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 20px;
  }

  .hero,
  .feature-grid,
  .two-column,
  .install-panel {
    grid-template-columns: 1fr;
  }

  .phone-stage {
    min-height: 0;
    padding: 16px;
  }

  .phone.secondary {
    transform: none;
  }
}