/* 页脚 */
.pp-footer {
    background: #2c2c2c;
    color: #ccc;
    margin-top: 40px;
}
.pp-footer .pp-container { padding: 30px 20px; }
.pp-footer-cols {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 30px;
    padding-bottom: 24px;
    border-bottom: 1px solid #3a3a3a;
}
.pp-footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 12px; font-weight: bold; }
.pp-footer-col p { font-size: 13px; line-height: 1.7; color: #999; }
.pp-footer-col ul li {
    font-size: 13px;
    margin-bottom: 6px;
    color: #999;
}
.pp-footer-col ul li a { color: #999; }
.pp-footer-col ul li a:hover { color: #fff; }
.pp-footer-bottom {
    text-align: center;
    padding-top: 20px;
    font-size: 12px;
    color: #888;
}
.pp-footer-bottom p { margin: 4px 0; }
.pp-footer-bottom a { color: #999; margin: 0 6px; }
.pp-footer-bottom a:hover { color: #fff; }

@media (max-width: 768px) {
    .pp-footer-cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .pp-footer-cols { grid-template-columns: 1fr; }
}