/* ===== OKPainting bottom section (kept original look) ===== */
.okp-bottom-wrap{max-width:1200px;margin:40px auto 20px;padding:0 16px;font-family:Arial,Helvetica,sans-serif;color:#2e2e2e}
.okp-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:40px}
@media(max-width:900px){.okp-grid{grid-template-columns:1fr}}
/* FAQ accordion */
.okp-acc{border-top:1px solid #bbb}
.okp-acc-item{border-bottom:1px solid #bbb}
.okp-acc-btn{width:100%;display:flex;justify-content:space-between;align-items:center;background:#fff;color:#1f1f1f;font-size:16px;padding:16px 0;border:0;cursor:pointer;text-align:left}
.okp-acc-btn:focus{outline:none}
.okp-acc-icon{width:18px;height:18px;flex:0 0 18px;position:relative}
.okp-acc-icon:before,.okp-acc-icon:after{content:"";position:absolute;background:#6b6b6b;left:0;right:0;margin:auto}
.okp-acc-icon:before{top:8px;height:2px;width:18px}
.okp-acc-icon:after{top:-1px;bottom:-1px;width:2px;height:18px}
.okp-acc-item.active .okp-acc-icon:after{display:none} /* 变减号 */
.okp-acc-panel{max-height:0;overflow:hidden;transition:max-height .28s ease}
.okp-acc-panel p{margin:0 0 14px;color:#555;line-height:1.6}
/* Right column */
.okp-right h3{margin:0 0 12px;font-size:20px}
.okp-feature{border-left:3px solid #ddd;padding-left:16px;margin:16px 0}
.okp-feature h4{margin:0 0 6px;font-size:18px}
.okp-feature p{margin:0;color:#555;line-height:1.6}