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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  color: #e2e8f0;
  background: #0f172a;
  line-height: 1.6;
}

a {
  color: #5cc8c8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */

.hero {
  text-align: center;
  padding: 80px 0 60px;
  background: linear-gradient(180deg, #0f172a 0%, #1a2a3a 100%);
  border-bottom: 1px solid #1e3a3a;
}

.hero .logo {
  width: 128px;
  height: 128px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.hero .tagline {
  font-size: 1.2rem;
  color: #94a3b8;
  margin: 8px 0 32px;
}

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

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.1s;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: #0d9488;
  color: #fff;
}

.btn-primary:hover {
  background: #0f766e;
}

.btn-secondary {
  background: #1e293b;
  color: #e2e8f0;
  border: 1px solid #334155;
}

.btn-secondary:hover {
  background: #334155;
}

/* Sections */

.section {
  padding: 60px 0;
}

.section-dark {
  background: #131e2f;
}

.section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 24px;
}

.section p {
  margin-bottom: 16px;
  color: #cbd5e1;
  max-width: 720px;
}

/* Features */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.feature-card {
  background: #1a2a3a;
  border: 1px solid #1e3a3a;
  border-radius: 10px;
  padding: 20px;
}

.feature-card h3 {
  font-size: 1.05rem;
  color: #5cc8c8;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.9rem;
  color: #94a3b8;
  margin-bottom: 0;
}

kbd {
  display: inline-block;
  padding: 2px 6px;
  font-size: 0.8em;
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  color: #e2e8f0;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 4px;
}

code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 0.9em;
  color: #5cc8c8;
  background: #1a2a3a;
  padding: 2px 6px;
  border-radius: 4px;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Steps */

.steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 24px 0;
}

.step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #0d9488;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step h3 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 8px;
}

.step p {
  margin-bottom: 8px;
  color: #94a3b8;
}

.step ol {
  margin-left: 20px;
  color: #cbd5e1;
}

.step ol li {
  margin-bottom: 4px;
}

.step pre {
  background: #0f172a;
  border: 1px solid #1e3a3a;
  border-radius: 8px;
  padding: 12px 16px;
  overflow-x: auto;
  margin-bottom: 8px;
}

.note {
  background: #1a2a3a;
  border-left: 4px solid #5cc8c8;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 0.95rem;
  color: #94a3b8 !important;
  margin-bottom: 24px;
}

.tip {
  font-size: 0.9rem;
  color: #64748b !important;
}

.prereqs-heading {
  color: #fff;
  font-size: 1.2rem;
  margin-top: 32px;
  margin-bottom: 12px;
}

.prereqs {
  list-style: disc;
  margin-left: 20px;
  color: #cbd5e1;
}

.prereqs li {
  margin-bottom: 4px;
}

/* Usage */

.usage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.usage-item {
  background: #1a2a3a;
  border: 1px solid #1e3a3a;
  border-radius: 10px;
  padding: 16px;
}

.usage-key {
  display: inline-block;
  font-weight: 600;
  color: #5cc8c8;
  margin-bottom: 4px;
}

.usage-item p {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: #94a3b8;
}

/* Code block */

.code-block {
  background: #0f172a;
  border: 1px solid #1e3a3a;
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 16px 0;
}

/* Footer */

.footer {
  text-align: center;
  padding: 32px 0;
  border-top: 1px solid #1e3a3a;
  font-size: 0.9rem;
  color: #64748b;
}

.footer a {
  color: #94a3b8;
}