:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --brand: #0a6bd6;
  --brand-soft: #e8f2ff;
  --border: #d8dee8;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  margin: 0;
}

.wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

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

nav a[aria-current="page"] {
  font-weight: 600;
  text-decoration: underline;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.25rem 1.1rem;
  margin-bottom: 1rem;
}

h1 {
  font-size: 1.85rem;
  line-height: 1.15;
  margin: 0 0 0.35rem;
}

h2 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.45rem;
}

.meta { color: var(--muted); margin: 0 0 1rem; }

pre, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88rem;
}

pre {
  background: #f3f6fa;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.btn {
  display: block;
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 0.95rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.65rem;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-secondary {
  background: var(--brand-soft);
  color: var(--brand);
}

.status {
  min-height: 1.25rem;
  margin-top: 0.65rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.status.ok { color: #128a3e; }

ul { padding-left: 1.2rem; }

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