:root {
  --ink: #1f1d1a;
  --line: #dfddd6;
  --accent: #2f46c8;
  --paper: #f7f7f5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
}

.logo {
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.nav-toggle {
  padding: 0.45rem 0.85rem;
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}

.site-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.site-nav.is-open {
  display: block;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0.5rem 1.25rem 1rem;
}

.site-nav a {
  display: block;
  padding: 0.65rem 0;
  color: var(--ink);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

@media (min-width: 700px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: block;
    position: static;
    border: 0;
    background: none;
  }

  .site-nav ul {
    display: flex;
    gap: 1.5rem;
    padding: 0;
  }

  .site-nav a {
    padding: 0.25rem 0;
  }
}