:root {
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #111827;
  --muted: #5b6575;
  --line: #d9dee8;
  --brand: #2457ff;
  --brand-dark: #173bb5;
  --green: #147a4d;
  --yellow: #9a6500;
  --code: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
}

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

.nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-weight: 750;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 56px 24px 42px;
}

.hero.compact {
  padding: 34px 0 18px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--brand-dark);
  font-weight: 700;
}

h1 {
  margin: 0;
  max-width: 900px;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.06;
  letter-spacing: 0;
}

.lead {
  max-width: 780px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 19px;
}

.actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 6px;
  border: 1px solid var(--brand);
  background: var(--brand);
  color: #fff;
  font-weight: 650;
}

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

.content {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.section {
  margin-top: 34px;
}

.section h2 {
  margin: 0 0 14px;
  font-size: 28px;
}

.article {
  max-width: 900px;
  margin: 0 auto;
  padding: 38px 24px 72px;
}

.article h1 {
  font-size: clamp(30px, 5vw, 48px);
}

.article h2 {
  margin-top: 34px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.article h3 {
  margin-top: 26px;
}

.article p,
.article li {
  color: #202938;
}

.lang-switch {
  margin: 18px 0 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  display: inline-flex;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--panel);
  font-size: 14px;
}

.pill.active {
  border-color: var(--brand);
  color: var(--brand);
  font-weight: 700;
}

pre {
  overflow-x: auto;
  padding: 16px;
  border-radius: 8px;
  background: var(--code);
  color: #e5e7eb;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

p code,
li code,
td code {
  padding: 2px 5px;
  border-radius: 4px;
  background: #eef2ff;
  color: #1e2a5a;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  background: var(--panel);
}

th,
td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eef2ff;
}

.footer {
  border-top: 1px solid var(--line);
  background: var(--panel);
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

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