:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #5f6b7a;
  --line: #dfe5ee;
  --primary: #2f6fed;
  --primary-dark: #1f4fb8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
}

.nav {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--text);
}

.links {
  display: flex;
  gap: 18px;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
}

.main {
  width: min(840px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 64px;
  flex: 1;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(24px, 4vw, 40px);
  box-shadow: 0 16px 48px rgba(23, 32, 51, 0.08);
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 32px 0 8px;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

p {
  margin: 0 0 16px;
}

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

.lede {
  color: var(--muted);
  font-size: 18px;
}

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

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}

.button:hover {
  color: #fff;
  background: var(--primary-dark);
  text-decoration: none;
}

.button.secondary {
  color: var(--primary);
  background: #eef4ff;
}

.button.secondary:hover {
  color: var(--primary-dark);
  background: #e1ebff;
}

.footer {
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 13px;
}

.footer-inner {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

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

  .links {
    flex-wrap: wrap;
  }
}