:root {
  --bg: #0b0c0f;
  --fg: #e9ecf1;
  --muted: #a7b0be;
  --card: #12141a;
  --accent: #4c8df6;
  --ok: #3ddc97;
}
* {
  box-sizing: border-box;
}
html {
  color-scheme: light dark;
}
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px;
}
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--fg);
}
.logo {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, #4c8df6, #7a5cff, #a37dfc);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
}
.logo:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}
h1 {
  font-size: 28px;
  margin: 0px 0 6px;
}
h2 {
  font-size: 20px;
  margin: 0px;
}
p {
  color: var(--muted);
  margin: 8px 0;
}
.card {
  background: var(--card);
  border: 1px solid #1d2230;
  padding: 12px 20px;
  border-radius: 16px;
  margin: 12px 0;
}
.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 10px 14px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
}
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.footer {
  opacity: 0.7;
  font-size: 13px;
  padding: 24px 0;
}
.lang {
  display: flex;
  gap: 8px;
}
.lang a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid #212635;
}
.lang a.active {
  color: var(--fg);
  border-color: var(--accent);
}
ul {
  margin: 6px 0 6px 0px;
  padding-left: 25px;
}
.small {
  font-size: 13px;
  color: var(--muted);
}
kbd {
  background: #1a1f2b;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid #2a3245;
}
a {
  color: #9bb7ff;
}
@media (max-width: 720px) {
  .grid {
    grid-template-columns: 1fr;
  }
}
.btn {
  background: linear-gradient(135deg, #4c8df6, #7a5cff, #a37dfc);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
  padding: 10px 16px;
  border-radius: 8;
  color: white;
  font-weight: 600;
}
.btn:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}