:root {
  color-scheme: light dark;
  --fg: #15171a; --muted: #5b6470; --bg: #ffffff; --soft: #f4f6f8;
  --accent: #16a34a; --accent-fg: #fff; --line: #e6e9ee;
}
@media (prefers-color-scheme: dark) {
  :root { --fg:#eef1f4; --muted:#9aa4b0; --bg:#0d0f12; --soft:#16191e; --accent:#22c55e; --line:#23272e; }
}
* { box-sizing: border-box; }
body { margin:0; color:var(--fg); background:var(--bg);
  font:17px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif; }

.nav { display:flex; align-items:center; justify-content:space-between;
  padding:20px 32px; border-bottom:1px solid var(--line); }
.logo { font-weight:800; letter-spacing:-.02em; font-size:20px; }
.nav nav a { margin-left:24px; color:var(--muted); text-decoration:none; font-size:15px; }
.nav nav a:hover { color:var(--fg); }

main { max-width:880px; margin:0 auto; padding:0 24px; }

.hero { text-align:center; padding:96px 0 72px; }
.eyebrow { text-transform:uppercase; letter-spacing:.12em; font-size:12px; color:var(--accent); margin:0 0 16px; }
.hero h1 { font-size:clamp(40px,7vw,68px); line-height:1.05; letter-spacing:-.03em; margin:0 0 20px; }
.lede { font-size:19px; color:var(--muted); max-width:560px; margin:0 auto 32px; }
.btn { display:inline-block; background:var(--accent); color:var(--accent-fg);
  padding:14px 28px; border-radius:999px; text-decoration:none; font-weight:600; }
.btn:hover { filter:brightness(1.05); }

.features { display:grid; gap:20px; grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  padding:24px 0 72px; }
.features article { background:var(--soft); border:1px solid var(--line); border-radius:16px; padding:24px; }
.features h3 { margin:0 0 8px; font-size:18px; }
.features p { margin:0; color:var(--muted); font-size:15px; }

.cta { text-align:center; padding:24px 0 96px; }
.cta h2 { font-size:32px; letter-spacing:-.02em; margin:0 0 20px; }
.cta button { font:inherit; font-weight:600; cursor:pointer; border:0;
  background:var(--accent); color:var(--accent-fg); padding:14px 28px; border-radius:999px; }

footer { text-align:center; color:var(--muted); font-size:13px;
  padding:32px; border-top:1px solid var(--line); }