:root {
  --bg: #fff;
  --fg: #14161a;
  --muted: #5b6270;
  --line: #e5e7eb;
  --soft: #f6f7f9;
  --accent: #4f46e5;
  --accent-fg: #fff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e1013; --fg: #f1f2f4; --muted: #9aa1ad; --line: #252a31; --soft: #161a1f; --accent: #38E6C5; --accent-fg: #0e1013; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
header.top { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; }
.logo { display: block; text-decoration: none; }
.logo img { display: block; height: 44px; width: auto; }
.btn { display: inline-block; padding: 11px 20px; border-radius: 8px; background: var(--accent); color: var(--accent-fg); font-weight: 600; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--fg); border: 1px solid var(--line); }
.hero { padding: 72px 0 64px; text-align: center; }
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.1; letter-spacing: -.03em; margin: 0 auto 20px; max-width: 760px; }
.hero p { color: var(--muted); font-size: 20px; max-width: 620px; margin: 0 auto 32px; }
.hero .cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
section { padding: 56px 0; }
section.alt { background: var(--soft); }
h2 { font-size: clamp(26px, 4vw, 34px); letter-spacing: -.02em; margin: 0 0 12px; text-align: center; }
.sub { text-align: center; color: var(--muted); max-width: 600px; margin: 0 auto 40px; }
.grid { display: grid; gap: 24px; max-width: 640px; margin: 0 auto; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 24px; background: var(--bg); }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
pre { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 20px; overflow-x: auto; font-size: 14px; max-width: 720px; margin: 0 auto; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 24px; max-width: 640px; margin: 0 auto; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 34px 1fr; column-gap: 16px; align-items: start; }
.steps li::before { content: counter(s); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); font-weight: 700; grid-row: 1 / span 2; }
.steps b { display: block; margin-bottom: 4px; grid-column: 2; }
.steps span { display: block; grid-column: 2; color: var(--muted); font-size: 16px; }
.final { text-align: center; }
footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; text-align: center; }