:root {
  color-scheme: light;
  --ink: #202124;
  --muted: #5f6368;
  --surface: #ffffff;
  --soft: #f5f7fb;
  --line: #dfe3eb;
  --brand: #3157c8;
  --brand-dark: #233f96;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  line-height: 1.65;
}

a { color: var(--brand-dark); }

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}

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

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 750;
  text-decoration: none;
}

nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--brand); }

main { padding: 44px 0 64px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(24px, 5vw, 48px);
  box-shadow: 0 12px 32px rgba(32, 33, 36, 0.06);
}

.hero { padding-block: clamp(46px, 10vw, 92px); }
.hero h1 { font-size: clamp(2.3rem, 8vw, 4.7rem); line-height: 1.05; margin: 0 0 20px; }
.hero p { max-width: 680px; color: var(--muted); font-size: 1.15rem; }

h1 { line-height: 1.2; margin-top: 0; }
h2 { margin-top: 2.1rem; line-height: 1.3; }
.meta { color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--brand);
  color: white;
  font-weight: 650;
  text-decoration: none;
}
.button.secondary { background: var(--soft); color: var(--brand-dark); border: 1px solid var(--line); }

footer { color: var(--muted); text-align: center; padding: 0 16px 40px; font-size: 0.92rem; }

@media (max-width: 600px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 16px 0; gap: 10px; }
  main { padding-top: 24px; }
}