:root {
  color-scheme: light;
  --ink: #18212f;
  --muted: #5e6a7c;
  --line: #d9e1ea;
  --panel: #ffffff;
  --soft: #f4f8fb;
  --brand: #147e88;
  --accent: #f3a51b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header,
.site-footer {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.site-footer {
  border-top: 1px solid var(--line);
  border-bottom: 0;
}

.inner {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), #2b6f9f);
  color: #fff;
  font-weight: 900;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
  font-weight: 700;
}

.hero {
  padding: 56px 0 42px;
  background:
    linear-gradient(135deg, rgba(20, 126, 136, 0.92), rgba(24, 33, 47, 0.94)),
    radial-gradient(circle at 80% 20%, rgba(243, 165, 27, 0.42), transparent 34%);
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 36px;
  align-items: center;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(36px, 7vw, 68px);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero p {
  margin: 0;
  max-width: 680px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 18px;
}

.device-preview {
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 28px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.screen {
  min-height: 360px;
  border-radius: 22px;
  padding: 18px;
  background: #f8fbff;
  color: var(--ink);
}

.screen-bar,
.screen-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.screen-bar {
  height: 46px;
  margin-bottom: 16px;
}

.screen-card {
  padding: 16px;
}

.screen-calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  margin-top: 14px;
}

.screen-calendar span {
  aspect-ratio: 1;
  border-radius: 8px;
  background: #edf4f7;
}

.screen-calendar span:nth-child(11),
.screen-calendar span:nth-child(20) {
  background: rgba(20, 126, 136, 0.32);
}

.section {
  padding: 42px 0;
}

.section h2 {
  margin: 0 0 16px;
  font-size: 30px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card,
.content-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.card {
  padding: 20px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.card p,
.content-panel p {
  margin: 0;
  color: var(--muted);
}

.content-panel {
  padding: 24px;
}

.content-panel h1 {
  margin-top: 0;
  font-size: 34px;
  line-height: 1.2;
}

.content-panel h2 {
  margin-top: 28px;
  font-size: 22px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .hero-grid,
  .cards {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 38px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .device-preview {
    max-width: 360px;
  }
}