:root {
  color-scheme: light dark;
  --bg: #f5f7fb;
  --card: rgba(255, 255, 255, 0.9);
  --text: #172033;
  --muted: #5a6475;
  --line: rgba(23, 32, 51, 0.12);
  --accent: #2f6fed;
  --shadow: 0 16px 48px rgba(15, 23, 42, 0.08);
  --max-width: 860px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420;
    --card: rgba(20, 28, 41, 0.92);
    --text: #f4f7fb;
    --muted: #a9b4c7;
    --line: rgba(255, 255, 255, 0.1);
    --accent: #7cabff;
    --shadow: 0 20px 48px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, rgba(47, 111, 237, 0.08), transparent 28%), var(--bg);
  color: var(--text);
}

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

.page {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero {
  padding: 28px;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 44px);
  line-height: 1.08;
}

.subtitle {
  margin: 14px 0 0;
  font-size: 17px;
  line-height: 1.65;
  color: var(--muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.nav a,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  text-decoration: none;
}

.button.primary,
.nav a.primary {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
}

.section {
  padding: 28px;
  margin-top: 20px;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.lang-block + .lang-block {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 14px;
  font-size: 24px;
}

h3 {
  margin: 24px 0 10px;
  font-size: 18px;
}

p,
li {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.footer {
  margin-top: 24px;
  padding: 0 4px;
  color: var(--muted);
  font-size: 14px;
}

.grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 720px) {
  .grid.two {
    grid-template-columns: 1fr 1fr;
  }
}