:root {
  --bg-main: #020617;
  --bg-card: rgba(15, 23, 42, 0.6);
  --border-card: rgba(148, 163, 184, 0.1);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-indigo: #6366f1;
  --accent-emerald: #10b981;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(circle at 0% 0%, rgba(99, 102, 241, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 100% 0%, rgba(16, 185, 129, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4rem;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.logo-img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-name {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--accent-indigo);
  margin-bottom: 0.25rem;
}

h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(to right, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.back-btn {
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.625rem 1.25rem;
  border-radius: 9999px;
  background: rgba(30, 41, 59, 0.5);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(8px);
}

.back-btn:hover {
  background: rgba(30, 41, 59, 0.8);
  border-color: var(--accent-indigo);
  transform: translateY(-1px);
}

.content-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 1.25rem;
  padding: 2rem;
  backdrop-filter: blur(12px);
  transition: border-color 0.3s ease;
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.2);
}

h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

h2::before {
  content: '';
  display: block;
  width: 4px;
  height: 24px;
  background: var(--accent-indigo);
  border-radius: 2px;
}

ul {
  list-style: none;
}

li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 1rem;
  color: #cbd5e1;
}

li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-indigo);
  font-weight: bold;
  opacity: 0.7;
}

li:last-child {
  margin-bottom: 0;
}

p {
  color: #cbd5e1;
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  background: rgba(99, 102, 241, 0.1);
  color: #a5b4fc;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

a.inline-link {
  color: var(--accent-indigo);
  text-decoration: none;
  border-bottom: 1px solid rgba(99, 102, 241, 0.3);
  transition: all 0.2s ease;
}

a.inline-link:hover {
  color: #818cf8;
  border-bottom-color: #818cf8;
}

.update-date {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.update-date::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  background: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
}

@media (max-width: 640px) {
  .container {
    padding: 2rem 1.25rem;
  }
  
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 3rem;
  }
  
  h1 {
    font-size: 1.75rem;
  }
}