*{box-sizing:border-box;margin:0;padding:0}
html,body{background:#FFF1F2;color:#4C0519;font-family:"Avenir Next","Segoe UI","PingFang SC",sans-serif;line-height:1.65}
a{color:#9F1239}
.ch-bar{background:#9F1239;color:#fff;padding:16px 24px;border-radius:0}
.ch-brand{font-size:17px;margin-bottom:10px}
.ch-nav{display:flex;flex-wrap:wrap;gap:10px 18px}
.ch-nav a{color:#fff;font-size:14px;text-decoration:none;border-bottom:1px solid transparent}
.ch-nav a:hover{border-bottom-color:#fff}
.ch-hero{padding:36px 24px;display:grid;grid-template-columns:1fr 1.15fr;gap:24px;align-items:center}
.ch-hero h1{font-size:28px;line-height:1.35;margin-bottom:12px}
.ch-hero p{margin-bottom:10px;font-size:16px}
.ch-mock{width:100%;height:auto;border-radius:16px;box-shadow:0 8px 24px rgba(159,18,57,.12)}
.ch-sec{padding:40px 24px}
.ch-sec h2{font-size:23px;margin-bottom:14px;color:#9F1239}
.ch-sec p{margin-bottom:12px;max-width:920px}
.ch-media{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
.ch-card{background:#fff;border:1px solid #FECDD3;border-radius:16px;padding:18px}
.ch-card h3{font-size:16px;margin:8px 0}
.ch-warn{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.ch-warn article{background:#fff;border:1px solid #9F1239;border-radius:16px;padding:18px}
.ch-warn h3{color:#9F1239;margin:8px 0}
.ch-steps{display:grid;gap:14px;margin-top:16px}
.ch-step{display:grid;grid-template-columns:48px 1fr;gap:14px;align-items:start;background:#fff;border:1px solid #FECDD3;border-radius:16px;padding:14px 16px}
.ch-num{width:40px;height:40px;border-radius:50%;background:#9F1239;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.ch-split{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.ch-split article{background:#fff;border:1px solid #FECDD3;border-radius:16px;padding:18px}
.ch-faq details{background:#fff;border:1px solid #9F1239;border-radius:16px;padding:12px 16px;margin-bottom:10px}
.ch-faq summary{cursor:pointer;color:#9F1239;font-weight:600}
.ch-faq p{margin-top:10px}
.ch-foot{background:#9F1239;color:#fff;padding:28px 24px;font-size:14px}
.ch-foot p{margin-bottom:10px;max-width:960px}
@media (max-width:900px){
.ch-hero,.ch-media,.ch-warn,.ch-split{grid-template-columns:1fr}
}