:root{--bg:#f7faf9;--card:#fff;--text:#1e2a27;--muted:#61706b;--accent:#1B9C85;--border:#dfe8e5}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
header,footer{border-color:var(--border);background:#fff}header{border-bottom:1px solid var(--border)}footer{border-top:1px solid var(--border);color:var(--muted)}
.wrap{max-width:900px;margin:0 auto;padding:24px}nav{display:flex;gap:18px;flex-wrap:wrap;align-items:center}.brand{font-weight:700;margin-right:auto}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}main .wrap{padding-top:48px;padding-bottom:64px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:0 8px 30px rgba(0,0,0,.04)}
h1,h2,h3{line-height:1.25}h1{margin-top:0}.muted,small{color:var(--muted)}ul,ol{padding-left:22px}