:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5f6368;
  --code-bg: #f3f4f6;
  --border: #e5e7eb;
  --accent: #2563eb;
  --surface: #f9fafb;
  --setup-bg: #eff6ff;
  --setup-border: #bfdbfe;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214;
    --fg: #e8e8e8;
    --muted: #9aa0a6;
    --code-bg: #1d1f23;
    --border: #2c2f34;
    --accent: #60a5fa;
    --surface: #17191c;
    --setup-bg: #14213a;
    --setup-border: #1e3a8a;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 40px 16px 24px;
}

h1 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 8px;
  font-size: 2.25rem;
  letter-spacing: -0.02em;
}

h2 {
  margin: 32px 0 12px;
  font-size: 1.2rem;
}

h3 {
  margin: 16px 0 4px;
  font-size: 1rem;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

code {
  font: 0.9em ui-monospace, SFMono-Regular, Menlo, monospace;
}


dt {
  margin-top: 10px;
  font-weight: 600;
}

dd {
  margin: 2px 0 0;
  color: var(--muted);
}

a {
  color: var(--accent);
}

.use-cases {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 900px) {
  .use-cases {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .use-cases {
    grid-template-columns: 1fr;
  }
}

.card {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.card h3 {
  margin-top: 0;
}

.card p {
  margin: 0 0 4px;
}

.card .detail {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.setup {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--setup-bg);
  border: 1px solid var(--setup-border);
  border-radius: 12px;
}

.setup h2 {
  margin-top: 0;
}

.setup p {
  margin: 0 0 12px;
}

.url-box {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  max-width: 100%;
  padding: 6px 6px 6px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.url-box code {
  overflow-x: auto;
  white-space: nowrap;
}

.copy {
  flex-shrink: 0;
  padding: 4px 12px;
  border: 0;
  border-radius: 6px;
  background: #64aebb;
  color: #0e2a40;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.copy:hover {
  background: #7bbdc8;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

@media (max-width: 700px) {
  .steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

.steps li {
  position: relative;
  padding-left: 38px;
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #64aebb;
  color: #0e2a40;
  font-weight: 700;
  line-height: 26px;
  text-align: center;
}

.steps strong {
  display: block;
}


footer {
  margin-top: 32px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}