:root {
  --bg: #fff;
  --surface: #f7f8fa;
  --ink: #0b0f19;
  --muted: #4b5563;
  --line: #e5e7eb;
  --accent: #0052ff;
  --max: 880px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--bg); font: 16px/1.72 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC",sans-serif; }
a { color: var(--accent); }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav { min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { color: var(--ink); font-weight: 850; text-decoration: none; }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; font-size: 14px; }
.nav-links a { color: var(--muted); text-decoration: none; }
main { padding: 76px 0 88px; }
.eyebrow { color: var(--accent); font: 700 12px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace; letter-spacing: .08em; text-transform: uppercase; }
h1 { max-width: 760px; margin: 12px 0 18px; font-size: clamp(38px,7vw,68px); line-height: 1.04; letter-spacing: -.055em; }
h2 { margin: 54px 0 14px; font-size: 27px; line-height: 1.25; letter-spacing: -.025em; }
h3 { margin: 0 0 8px; font-size: 18px; }
p, li { color: #293142; }
.lede { max-width: 720px; font-size: 20px; color: var(--muted); }
.meta { margin: 28px 0 0; color: var(--muted); font-size: 14px; }
.metric { margin: 34px 0; padding: 28px; border: 1px solid var(--ink); box-shadow: 8px 8px 0 var(--ink); }
.metric strong { display: block; color: var(--accent); font-size: clamp(38px,7vw,64px); line-height: 1; letter-spacing: -.05em; }
.metric span { display: block; margin-top: 10px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; margin: 22px 0; }
.card { padding: 22px; border: 1px solid var(--line); background: var(--surface); }
.steps { padding: 0; list-style: none; counter-reset: step; }
.steps li { position: relative; margin: 0 0 14px; padding: 0 0 14px 42px; border-bottom: 1px solid var(--line); }
.steps li::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0; color: var(--accent); font: 700 13px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace; }
.note { margin: 28px 0; padding: 20px 22px; border-left: 4px solid var(--accent); background: #eef4ff; }
.cta { margin-top: 56px; padding: 30px; color: #fff; background: var(--ink); }
.cta h2 { margin: 0 0 10px; }
.cta p { color: #d1d5db; }
.button { display: inline-block; margin-top: 8px; padding: 11px 16px; color: #fff; background: var(--accent); text-decoration: none; font-weight: 750; }
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 48px; color: var(--muted); font-size: 14px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); margin-left: 14px; }
@media (max-width: 640px) { main { padding-top: 48px; } .grid { grid-template-columns: 1fr; } .nav-links { gap: 10px; } }