:root {
  color-scheme: light;
  --ink: #182033;
  --muted: #5d667a;
  --line: #dce2ee;
  --panel: #ffffff;
  --soft: #f5f7fb;
  --brand: #3559d6;
  --brand-dark: #2440a6;
  --accent: #0f8b6f;
  --max: 1040px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--soft);
  line-height: 1.55;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 2;
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
  color: var(--ink);
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

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

.hero {
  background: #eaf0ff;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 58px 20px 52px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-weight: 760;
  font-size: 14px;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(40px, 7vw, 72px);
  line-height: 0.98;
  margin: 0 0 20px;
  letter-spacing: 0;
}

h2 {
  font-size: 30px;
  line-height: 1.15;
  margin: 0 0 14px;
}

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

p {
  margin: 0 0 16px;
}

.lead {
  font-size: 19px;
  color: var(--muted);
  max-width: 700px;
}

.hero-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
  box-shadow: 0 20px 50px rgba(31, 46, 84, 0.12);
}

.app-icon {
  width: 92px;
  height: 92px;
  border-radius: 20px;
  display: block;
  margin-bottom: 22px;
}

.hero-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-list li {
  border-top: 1px solid var(--line);
  padding: 13px 0;
  color: var(--muted);
}

.hero-list li:first-child {
  border-top: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--brand);
  color: #ffffff;
  font-weight: 700;
}

.button:hover {
  background: var(--brand-dark);
  text-decoration: none;
}

.button.secondary {
  background: #ffffff;
  color: var(--brand);
  border: 1px solid var(--line);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 54px 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.tile {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.tile p,
.article p,
.article li {
  color: var(--muted);
}

.article {
  max-width: 820px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 34px;
}

.article h1 {
  font-size: 42px;
  line-height: 1.08;
}

.article h2 {
  margin-top: 30px;
}

.article ul {
  margin: 0 0 16px;
  padding-left: 22px;
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 28px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px 20px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-inner,
  .grid {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding-top: 38px;
  }

  .article {
    padding: 24px;
  }
}