:root { --bg:#fff; --fg:#17181c; --muted:#5b606b; --accent:#0f766e; --line:#e4e6ea; }
@media (prefers-color-scheme: dark) {
  :root { --bg:#111214; --fg:#ececef; --muted:#9aa0ab; --accent:#2dd4bf; --line:#2a2c31; }
}
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg); font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif; }
header, main, footer { max-width:720px; margin:0 auto; padding:0 16px; }
header { display:flex; justify-content:space-between; align-items:center; padding-top:20px; padding-bottom:20px; border-bottom:1px solid var(--line); }
header a.brand { font-weight:700; font-size:1.2rem; color:var(--fg); text-decoration:none; }
nav a { margin-left:16px; color:var(--muted); text-decoration:none; }
nav a:hover { color:var(--accent); }
main { padding-top:32px; padding-bottom:48px; }
h1 { font-size:2rem; line-height:1.2; margin:0 0 12px; }
h2 { font-size:1.25rem; margin:32px 0 8px; }
.lead { font-size:1.15rem; color:var(--muted); }
.features { display:grid; gap:16px; margin-top:24px; }
@media (min-width:600px) { .features { grid-template-columns:1fr 1fr; } }
.card { border:1px solid var(--line); border-radius:10px; padding:16px; }
.card h2 { margin-top:0; }
a { color:var(--accent); }
footer { padding-top:20px; padding-bottom:32px; border-top:1px solid var(--line); color:var(--muted); font-size:.9rem; }
code { background:var(--line); padding:2px 6px; border-radius:4px; word-break:break-all; }

/* landing */
header a.brand span { color: var(--accent); }
.hero { padding: 40px 0 24px; text-align: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; color: var(--accent); font-weight: 600; margin: 0 0 12px; }
.hero h1 { font-size: clamp(2.2rem, 7vw, 3.4rem); letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { max-width: 540px; margin: 0 auto 24px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { background: var(--accent); color: var(--bg); padding: 10px 20px; border-radius: 8px; font-weight: 600; text-decoration: none; border: 1px solid var(--accent); }
.btn.ghost { background: transparent; color: var(--accent); }
.timeline { display: flex; align-items: center; height: 14px; margin: 36px auto 8px; max-width: 480px; }
.timeline span { height: 100%; background: var(--accent); border-radius: 4px; }
.timeline i { width: 18px; height: 2px; background: var(--line); margin: 0 4px; flex: none; }
.caption { color: var(--muted); font-size: .9rem; margin: 0; }
.steps { list-style: none; counter-reset: s; padding: 0; display: grid; gap: 12px; }
.steps li { counter-increment: s; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px 14px 56px; position: relative; }
.steps li::before { content: counter(s); position: absolute; left: 16px; top: 14px; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--bg); display: grid; place-items: center; font-weight: 700; }
.steps b { display: block; }
.steps span { color: var(--muted); }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); }
@media (min-width: 600px) { .features { grid-template-columns: repeat(3, 1fr); } }
html { scroll-behavior: smooth; }