html{scroll-behavior:smooth}
body{font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
.nav-scrolled{background:#ffffff;box-shadow:0 1px 0 0 #e5e7eb}
.ft-card{position:relative;transition:all .3s ease;overflow:hidden}
.ft-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:linear-gradient(90deg,#2563eb,#06b6d4);transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.ft-card:hover{transform:translateY(-6px);box-shadow:0 24px 48px -12px rgba(37,99,235,.2)}
.ft-card:hover::after{transform:scaleX(1)}
.t-card{transition:all .3s ease}
.t-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -14px rgba(37,99,235,.15)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:#2563eb}
.faq-arrow{transition:all .3s ease}
@keyframes ping-slow{0%{box-shadow:0 0 0 0 rgba(37,99,235,.35)}100%{box-shadow:0 0 0 14px rgba(37,99,235,0)}}
.ping-dot{animation:ping-slow 2.2s ease-out infinite}