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

body {
  background-color: #0d0f14;
  color: #e2e8f0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 24px 72px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 32px;
  border-bottom: 1px solid #1e2430;
  margin-bottom: 48px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #38bdf8;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: #f8fafc;
  letter-spacing: -0.01em;
}

.header-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.repo-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: #38bdf8;
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid #1e293b;
  background: #131720;
  border-radius: 6px;
}

.repo-link:hover {
  border-color: #38bdf8;
}

.hero {
  margin-bottom: 48px;
}

h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.lead {
  font-size: 1.1rem;
  color: #94a3b8;
  margin-bottom: 16px;
}

.lead em {
  color: #e2e8f0;
  font-style: italic;
}

.repo-banner {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: #94a3b8;
}

.repo-banner a {
  color: #38bdf8;
  text-decoration: none;
}

.repo-banner a:hover {
  text-decoration: underline;
}

.section {
  margin-bottom: 48px;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f8fafc;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.section > p {
  color: #94a3b8;
  margin-bottom: 20px;
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.video-card {
  background: #131720;
  border: 1px solid #1e2430;
  border-radius: 10px;
  overflow: hidden;
}

.video-card video {
  width: 100%;
  display: block;
  background: #000000;
  max-height: 440px;
}

.video-caption {
  padding: 12px 16px;
  font-size: 0.88rem;
  color: #94a3b8;
  border-top: 1px solid #1e2430;
}

.video-caption strong {
  color: #f1f5f9;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.card {
  background: #131720;
  border: 1px solid #1e2430;
  border-radius: 10px;
  padding: 20px;
}

.card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #f1f5f9;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.9rem;
  color: #94a3b8;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  background: #131720;
  border: 1px solid #1e2430;
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.92rem;
  color: #94a3b8;
}

.feature-list strong {
  color: #f1f5f9;
}

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.84em;
  background: #1e2430;
  color: #38bdf8;
  padding: 2px 6px;
  border-radius: 4px;
}

.code-block {
  background: #131720;
  border: 1px solid #1e2430;
  border-radius: 10px;
  padding: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: #cbd5e1;
  overflow-x: auto;
  line-height: 1.6;
}

.footer {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid #1e2430;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.85rem;
  color: #64748b;
}

.footer a {
  color: #38bdf8;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}