* { box-sizing: border-box; }
body { margin: 0; background: #f3f2ee; color: #222; font-family: system-ui, sans-serif; }
header { background: #26313c; color: #fff; padding: 12px 0; }
header .wrap { display: flex; justify-content: space-between; font-size: 13px; }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
main { padding: 28px 20px 48px; }
h1 { font-size: 22px; }
.panel { background: #fff; border: 1px solid #ddd; border-radius: 8px; padding: 16px; margin: 16px 0; }
.panel h2 { margin-top: 0; font-size: 16px; }
label { display: block; margin: 8px 0; font-size: 13px; }
input { width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 6px; margin-top: 4px; }
.btn { background: #26313c; color: #fff; border: 0; border-radius: 6px; padding: 9px 18px; margin-top: 8px; }
.err { color: #b3261e; font-size: 13px; margin-top: 12px; }
.muted { color: #666; font-size: 13px; }