:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #5b677c;
  --line: #dce3ee;
  --primary: #1f6fff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.58;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.wrap {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
}

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

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

nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

nav a:hover,
nav a:focus {
  color: var(--primary);
}

main {
  padding: 42px 0 56px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(24px, 4vw, 44px);
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(32px, 6vw, 48px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin: 32px 0 10px;
  font-size: 22px;
  letter-spacing: 0;
}

h3 {
  margin: 24px 0 8px;
  font-size: 18px;
  letter-spacing: 0;
}

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

.lead {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 18px;
}

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

ul {
  padding-left: 22px;
}

.contact {
  margin-top: 18px;
  padding: 16px;
  background: #f1f5ff;
  border: 1px solid #d8e4ff;
  border-radius: 8px;
}

footer {
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 560px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    justify-content: flex-start;
  }
}