:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #14202e;
  --muted: #55657a;
  --line: #dde4ed;
  --navy: #0e1b2c;
  --blue: #2f6fb5;
  --blue-dark: #245a94;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1522;
    --surface: #122033;
    --ink: #e8eef6;
    --muted: #9fb0c5;
    --line: #223650;
    --navy: #07101b;
    --blue: #5b9be0;
    --blue-dark: #7db1ec;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

header.site {
  background: var(--navy);
  color: #fff;
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}
.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: .06em;
  font-size: 1.1rem;
}
.brand span { color: #6fa8e8; font-weight: 600; }
nav a {
  color: #cfdcec;
  text-decoration: none;
  margin-left: 20px;
  font-size: .95rem;
}
nav a:hover, nav a[aria-current="page"] { color: #fff; }

.hero {
  background: var(--navy);
  color: #fff;
  padding: 56px 0 64px;
}
.hero h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); line-height: 1.2; margin: 0 0 14px; }
.hero p { color: #cfdcec; max-width: 620px; margin: 0; font-size: 1.1rem; }

main { padding: 40px 0 56px; }
h2 { font-size: 1.4rem; margin: 40px 0 10px; line-height: 1.3; }
h2:first-child { margin-top: 0; }
h3 { font-size: 1.1rem; margin: 26px 0 6px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  margin: 18px 0;
}
.product {
  display: flex;
  gap: 20px;
  align-items: center;
}
.product img { width: 96px; height: 96px; border-radius: 22px; flex: none; }
.product h3 { margin: 0 0 4px; font-size: 1.25rem; }
.product p { margin: 0 0 10px; }

.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
}
.btn:hover { background: var(--blue-dark); color: #fff; }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid .card { margin: 0; }
.grid h3 { margin-top: 0; }

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: .9rem;
}
footer.site a { color: var(--muted); }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }

@media (max-width: 560px) {
  nav a { margin: 0 16px 0 0; }
  .product { flex-direction: column; align-items: flex-start; }
}