:root {
  --bg: #f5f7f2;
  --surface: #ffffff;
  --text: #232b20;
  --muted: #5b6b56;
  --faint: #8a988a;
  --green: #2f6b3c;
  --green-soft: #eaf3e6;
  --border: #dbe3d6;
  --on-green: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131a12;
    --surface: #1b241a;
    --text: #e8efe5;
    --muted: #a9b8a4;
    --faint: #7f8f7a;
    --green: #6fbd7f;
    --green-soft: #1f2f20;
    --border: #2c392b;
    --on-green: #0f1a10;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

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

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 36px;
  height: 36px;
  display: block;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.95rem;
}

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

main {
  padding: 40px 0 56px;
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 12px;
}

h2 {
  font-size: 1.25rem;
  margin: 40px 0 12px;
}

p {
  margin: 0 0 14px;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.contact p {
  margin: 0;
}

.button {
  display: inline-block;
  background: var(--green);
  color: var(--on-green);
  text-decoration: none;
  font-weight: 700;
  padding: 11px 20px;
  border-radius: 999px;
}

.button:hover {
  opacity: 0.9;
}

details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 10px;
}

summary {
  cursor: pointer;
  font-weight: 600;
  padding: 14px 18px;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  float: right;
  color: var(--green);
  font-weight: 700;
}

details[open] summary::after {
  content: "\2212";
}

details .answer {
  padding: 0 18px 6px;
  color: var(--muted);
}

ul {
  padding-left: 22px;
  margin: 0 0 14px;
}

li {
  margin-bottom: 6px;
}

.updated {
  color: var(--faint);
  font-size: 0.9rem;
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--faint);
  font-size: 0.9rem;
}

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

:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 2px;
  border-radius: 4px;
}