:root {
  color-scheme: dark;
  --background: #020617;
  --surface: #0f172a;
  --surface-high: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --primary: #a8a4ff;
  --secondary: #00d9ff;
  --success: #22c55e;
  --border: rgba(148, 163, 184, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

a:hover {
  color: var(--primary);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.92);
}

.nav,
.page {
  width: min(100% - 32px, 920px);
  margin: 0 auto;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  min-height: 68px;
}

.brand {
  margin-right: auto;
  color: var(--text);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.nav-link {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.page {
  padding: 52px 0 68px;
}

.hero {
  padding: 34px;
  border: 1px solid rgba(168, 164, 255, 0.36);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(168, 164, 255, 0.14), rgba(0, 217, 255, 0.05));
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h1 {
  margin: 0 0 14px;
  color: var(--primary);
  font-size: clamp(30px, 5vw, 44px);
}

h2 {
  margin-top: 38px;
  color: var(--primary);
  font-size: 24px;
}

h3 {
  margin-top: 26px;
  color: var(--secondary);
  font-size: 18px;
}

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

.muted {
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.card,
.notice {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.card h2 {
  margin-top: 0;
  font-size: 20px;
}

.notice {
  margin: 26px 0;
  border-color: rgba(0, 217, 255, 0.4);
}

.button {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 18px;
  border-radius: 10px;
  background: var(--primary);
  color: #020617;
  font-weight: 800;
  text-decoration: none;
}

.button:hover {
  background: var(--secondary);
  color: #020617;
}

.lang-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0;
}

.lang-nav a {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
}

.status {
  min-height: 92px;
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-high);
}

.status[data-state="success"] {
  border-color: rgba(34, 197, 94, 0.7);
}

.status[data-state="error"] {
  border-color: rgba(248, 113, 113, 0.75);
}

code {
  color: var(--secondary);
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 620px) {
  .nav {
    gap: 12px;
    padding: 10px 0;
  }

  .brand {
    width: 100%;
  }

  .page {
    padding-top: 34px;
  }

  .hero {
    padding: 24px;
  }
}