*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #fafbfc;
  --color-text: #1a1a2e;
  --color-muted: #555;
  --color-accent: #0055a4;
  --color-accent-light: #e6f0fa;
  --color-border: #e0e0e0;
  --color-card-bg: #fff;
  --max-width: 720px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  text-decoration: underline;
}

/* Nav */
header {
  border-bottom: 1px solid var(--color-border);
  background: #fff;
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--color-accent);
}

/* Main */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
  width: 100%;
}

/* Hero */
.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.tagline {
  font-size: 1.2rem;
  color: var(--color-muted);
  margin-bottom: 1rem;
}

.description {
  color: var(--color-muted);
  max-width: 520px;
  margin: 0 auto 2rem;
}

.badges {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.badge img {
  height: 50px;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  padding: 2rem 0 3rem;
}

.feature {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
}

.feature h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.feature p {
  color: var(--color-muted);
  font-size: 0.92rem;
}

/* Content pages (privacy, copyright) */
.content-page h1 {
  font-size: 2rem;
  margin: 2rem 0 0.25rem;
}

.last-updated {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.content-page h2 {
  font-size: 1.3rem;
  margin: 2rem 0 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-border);
}

.content-page h2:first-of-type {
  border-top: none;
}

.content-page h3 {
  font-size: 1.05rem;
  margin: 1.25rem 0 0.4rem;
}

.content-page p {
  margin-bottom: 0.75rem;
}

.content-page ul {
  margin: 0.5rem 0 1rem 1.5rem;
}

.content-page li {
  margin-bottom: 0.35rem;
}

.content-page code {
  background: var(--color-accent-light);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

/* Footer */
footer {
  border-top: 1px solid var(--color-border);
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-muted);
}

/* Responsive */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }

  .features {
    grid-template-columns: 1fr;
  }

  nav {
    padding: 0.75rem 1rem;
  }
}