:root {
  color-scheme: light dark;
  --background: #f7f8f6;
  --surface: #ffffff;
  --text: #18221d;
  --muted: #5a685f;
  --border: #dce3de;
  --accent: #176b4d;
  --accent-strong: #0f553c;
  --focus: #f0a11a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #111713;
    --surface: #18201b;
    --text: #edf4ef;
    --muted: #adbbb2;
    --border: #344239;
    --accent: #69d5a4;
    --accent-strong: #8be7ba;
    --focus: #ffc55d;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-strong);
}

a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.site-header,
.site-footer {
  border-color: var(--border);
  border-style: solid;
}

.site-header {
  border-width: 0 0 1px;
  background: var(--surface);
}

.site-footer {
  border-width: 1px 0 0;
  color: var(--muted);
}

.header-inner,
.page,
.footer-inner {
  width: min(100% - 2rem, 760px);
  margin-inline: auto;
}

.header-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
}

.page {
  padding-block: 4rem;
}

.page.narrow {
  padding-block: 3rem 4rem;
}

h1,
h2 {
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 8vw, 3.4rem);
}

.narrow h1 {
  font-size: clamp(1.8rem, 6vw, 2.6rem);
}

h2 {
  margin: 2.5rem 0 0.7rem;
  font-size: 1.2rem;
}

p,
li {
  color: var(--muted);
}

strong {
  color: var(--text);
}

.lead {
  max-width: 640px;
  font-size: 1.15rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0.65rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 650;
  text-decoration: none;
}

.button:hover {
  background: var(--accent-strong);
  color: #ffffff;
}

.button.secondary {
  background: transparent;
  color: var(--accent);
}

.card {
  margin-top: 2.5rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.card h2 {
  margin-top: 0;
}

.meta {
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

code {
  padding: 0.1rem 0.3rem;
  border-radius: 5px;
  background: var(--surface);
  color: var(--text);
}

.footer-inner {
  padding-block: 1.5rem;
  font-size: 0.85rem;
}

@media (max-width: 540px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 0.85rem;
  }

  .page {
    padding-block: 2.5rem;
  }
}