:root {
  --bg: #0D1117;
  --surface: #161B22;

  --primary: #58A6FF;
  --secondary: #A371F7;

  --text: #E6EDF3;
  --muted: #8B949E;

  --success: #3FB950;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, sans-serif;
}

.container {
  width: min(900px, 92vw);
  margin: 28px auto;
}

.top-install {
  display: flex;
  justify-content: center;
  margin-top: 10px;
}

.hero {
  margin-bottom: 16px;
}

.logo {
  display: block;
  width: min(220px, 60vw);
  height: auto;
  margin: 0 auto 8px;
}

h1, h2, h3 {
  color: var(--text);
}

p {
  color: var(--muted);
  line-height: 1.6;
}
.card {
  background: var(--surface);
  border: 1px solid #222938;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 14px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-bottom: 20px;
}

.tab {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  padding: 0 12px;
  line-height: 1.1;
  border-right: 1px solid #2c3342;
  transition: color 120ms ease;
}

.tab:hover {
  color: var(--primary);
}

.tab.active {
  color: var(--primary);
  font-weight: 600;
}

.tab:first-child {
  padding-left: 0;
}

.tab:last-child {
  border-right: none;
  padding-right: 0;
}

.button {
  background: var(--primary);
  color: black;
  border: none;
  padding: 10px 14px;
  border-radius: 6px;
  cursor: pointer;
}

.button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.button:hover {
  opacity: 0.9;
}

.subtitle {
  color: var(--muted);
  margin-top: -10px;
}

.site-footer {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid #222938;
}

.site-footer a {
  color: var(--primary);
}

@media (max-width: 640px) {
  .container {
    margin: 16px auto;
  }

  .tab {
    padding: 0 10px;
  }
}