:root{--navy:#0f2a47;--accent:#c8102e;--muted:#5d6b7a;--border:#e1e6ed}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:#1d2733;background:#f4f6f9;line-height:1.7}
a{color:var(--accent)}
header{background:#fff;border-bottom:1px solid var(--border)}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.mark{width:42px;height:42px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-family:Georgia,serif;font-weight:700;font-size:1.2rem}
.logo strong{display:block;color:var(--navy);letter-spacing:.04em}
.logo span{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.14em}
.back{color:var(--navy);font-weight:600;text-decoration:none;font-size:.95rem}
main{display:block;background:#fff;margin:40px auto;border-radius:12px;padding:44px;border:1px solid var(--border)}
h1{font-family:Georgia,serif;color:var(--navy);font-size:2rem;margin-bottom:8px}
.maj{color:var(--muted);font-size:.9rem;margin-bottom:28px}
h2{color:var(--navy);font-size:1.15rem;margin:30px 0 10px;padding-top:20px;border-top:1px solid var(--border)}
p,li{margin-bottom:8px}
ul{padding-left:20px}
.todo{background:#fff4d6;padding:1px 6px;border-radius:4px}
footer{text-align:center;color:var(--muted);font-size:.85rem;padding:0 20px 40px}
@media(max-width:600px){main{padding:26px;margin:20px 12px}}