:root { --bg:#eef2f5; --ink:#1f2933; --muted:#52606d; --card:#ffffff; --line:#cbd2d9; --accent:#9b2c2c; }
* { box-sizing:border-box; }
body { margin:0; font:17px/1.65 "Helvetica Neue", Arial, sans-serif; background:var(--bg); color:var(--ink); }
header, footer { background:#1f2933; color:#eef2f5; }
header { padding:1rem 1.5rem; display:flex; gap:1.5rem; }
header a { color:#eef2f5; text-decoration:none; letter-spacing:.04em; text-transform:uppercase; font-size:.85rem; }
main { max-width:720px; margin:3rem auto; padding:0 1.25rem; }
.card { background:var(--card); border:1px solid var(--line); border-left:6px solid var(--accent); padding:2rem; }
h1 { margin-top:0; font-weight:600; }
footer { padding:1rem 1.5rem; font-size:.85rem; color:#9aa5b1; }