:root {
  --bg: #f6f8fb; --panel: #ffffff; --ink: #0f172a; --muted: #475569; --line: #e2e8f0;
  --brand: #2563eb; --brand2: #059669; --code: #0b1220; --codeink: #e2e8f0;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b1220; --panel: #111a2e; --ink: #e2e8f0; --muted: #94a3b8; --line: #1e2a44; --brand: #60a5fa; --brand2: #34d399; --code: #050a14; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif; }
a { color: var(--brand); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .92em; }
.hero { background: linear-gradient(135deg, #1e3a5f, #0f172a); color: #fff; padding: 48px 16px 40px; }
.hero > * { max-width: 960px; margin-left: auto; margin-right: auto; }
.hero .back { color: #cbd5e1; text-decoration: none; display: block; margin-bottom: 24px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; color: #93c5fd; margin: 0 auto 8px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 auto 12px; letter-spacing: -.02em; }
.lede { font-size: 1.15rem; color: #e2e8f0; margin-top: 0; }
main { max-width: 960px; margin: 0 auto; padding: 8px 16px 48px; }
section { margin-top: 40px; }
h2 { font-size: 1.5rem; letter-spacing: -.01em; border-bottom: 2px solid var(--line); padding-bottom: 8px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 6px 0; color: var(--muted); }
.note { color: var(--muted); font-size: .95rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
pre { background: var(--code); color: var(--codeink); padding: 14px 16px; border-radius: 10px; overflow-x: auto; }
.steps li { margin-bottom: 8px; }
footer { text-align: center; color: var(--muted); padding: 24px 16px 40px; font-size: .9rem; }