:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f7f6;
  color: #17211f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid #dbe3df;
  display: flex;
  justify-content: space-between;
  padding: 16px clamp(20px, 5vw, 72px);
}

.brand {
  align-items: center;
  display: flex;
  font-weight: 800;
  gap: 10px;
}

.brand img {
  border-radius: 8px;
}

nav {
  display: flex;
  gap: 18px;
  color: #52615d;
  font-size: 14px;
}

.hero {
  align-items: center;
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(0, 1fr) 360px;
  max-width: 1120px;
  min-height: calc(100vh - 77px);
  margin: 0 auto;
  padding: 54px 20px;
}

.hero-copy {
  max-width: 680px;
}

.eyebrow {
  color: #397164;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 10px;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(48px, 9vw, 92px);
  line-height: 0.92;
  margin-bottom: 18px;
}

.hero p {
  color: #52615d;
  font-size: 20px;
  line-height: 1.55;
}

.download-button {
  background: #17211f;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  display: grid;
  font: inherit;
  gap: 2px;
  margin-top: 12px;
  min-width: 230px;
  padding: 12px 18px;
  text-align: left;
}

.download-button:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}

.download-button span {
  font-weight: 800;
}

.download-button small {
  color: #c8d8d2;
}

.phone-preview {
  background: #ffffff;
  border: 1px solid #d9e4df;
  border-radius: 30px;
  box-shadow: 0 28px 70px rgba(23, 33, 31, 0.14);
  display: grid;
  gap: 20px;
  min-height: 520px;
  padding: 36px 26px;
}

.phone-preview img {
  border-radius: 24px;
  width: 104px;
}

.phone-preview div {
  align-self: end;
  background: #edf7f3;
  border-radius: 8px;
  padding: 18px;
}

.phone-preview p,
.care-band p,
.feature-grid p {
  color: #52615d;
  line-height: 1.55;
}

.feature-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 auto;
  max-width: 1120px;
  padding: 20px 20px 64px;
}

.feature-grid article {
  background: #ffffff;
  border: 1px solid #d9e4df;
  border-radius: 8px;
  padding: 18px;
}

.care-band {
  background: #17211f;
  color: #ffffff;
  padding: 44px clamp(20px, 5vw, 72px);
}

.care-band p {
  color: #d4dfdb;
  max-width: 860px;
}

@media (max-width: 840px) {
  .site-header,
  .hero,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    align-items: flex-start;
    display: grid;
    gap: 12px;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero {
    min-height: auto;
  }

  .phone-preview {
    min-height: 360px;
  }
}