:root {
  --bg-color: #0e0e10;
  --surface-color: #18181b;
  --surface-border: #27272a;
  --primary-blue: #2563eb;
  --primary-blue-hover: #1d4ed8;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --accent-teal: #0d9488;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--surface-border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  font-size: 24px;
}

.logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: contain;
}

.logo-text {
  font-weight: 700;
  font-size: 20px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.tag {
  font-size: 11px;
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  padding: 3px 8px;
  border-radius: 999px;
  color: var(--text-secondary);
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s ease;
}

nav a:hover {
  color: var(--text-primary);
}

.hero {
  padding: 80px 0 60px;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.12);
  color: #60a5fa;
  border: 1px solid rgba(37, 99, 235, 0.3);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero .subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.6;
}

.cta-group {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
}

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

.btn-primary:hover {
  background: var(--primary-blue-hover);
}

.btn-secondary {
  background: var(--surface-color);
  color: var(--text-primary);
  border: 1px solid var(--surface-border);
}

.btn-secondary:hover {
  border-color: #3f3f46;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 40px 0 80px;
}

.card {
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  padding: 28px;
  border-radius: 12px;
}

.card-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

footer {
  margin-top: auto;
  padding: 32px 0;
  border-top: 1px solid var(--surface-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}

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

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text-primary);
}

.content-page {
  padding: 50px 0 80px;
  max-width: 800px;
  margin: 0 auto;
}

.content-page h1 {
  font-size: 32px;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.content-page .updated {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.content-page h2 {
  font-size: 20px;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

.content-page p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 15px;
}

.content-page ul {
  color: var(--text-secondary);
  margin: 0 0 20px 24px;
}

.content-page li {
  margin-bottom: 8px;
  font-size: 15px;
}