:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-hover: #1f242c;
  --border: #30363d;
  --text: #c9d1d9;
  --text-secondary: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --success: #238636;
  --warning: #e3b341;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  border-bottom: 1px solid var(--border);
  background: rgba(13,17,23,0.8);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}

.brand img {
  height: 32px;
  width: 32px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 0.9rem;
}

.hero {
  text-align: center;
  padding: 80px 0 60px;
}

.hero img {
  width: 96px;
  height: 96px;
  border-radius: 16px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn-primary {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}

.btn-primary:hover {
  background: #2ea043;
  border-color: #2ea043;
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--surface-hover);
  text-decoration: none;
  color: var(--text);
}

.buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  margin-top: 12px;
}

section {
  padding: 60px 0;
}

section h2 {
  font-size: 1.8rem;
  margin-bottom: 32px;
  text-align: center;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  transition: transform 0.15s, background 0.15s;
}

.feature:hover {
  background: var(--surface-hover);
  transform: translateY(-2px);
}

.feature h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--accent);
}

.feature p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.install {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

.install pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  font-size: 0.9rem;
  color: var(--text);
}

.install code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

.changelog-entry {
  margin-bottom: 24px;
  padding-left: 20px;
  border-left: 3px solid var(--border);
}

.changelog-entry h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--accent);
}

.changelog-entry ul {
  list-style: disc;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.changelog-entry li {
  margin-bottom: 6px;
}

footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

footer a {
  color: var(--text-secondary);
  text-decoration: underline;
}

.req-list {
  margin: 12px 0 20px 20px;
  color: var(--text-secondary);
}

.mt-20 {
  margin-top: 20px;
}

.center {
  text-align: center;
}

.mt-12 {
  margin-top: 12px;
}

.footer-sub {
  margin-top: 6px;
  font-size: 0.8rem;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .nav-links {
    gap: 16px;
  }
}