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{transition:all .3s ease;position:relative;overflow:hidden}
.ft-card::after{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,#4f46e5,#8b5cf6);transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.ft-card:hover{transform:translateY(-6px);box-shadow:0 24px 48px -12px rgba(99,102,241,.22)}
.ft-card:hover::after{transform:scaleX(1)}
.ft-card:hover .ft-icon{background:#4f46e5;color:#fff}
.ft-icon{transition:all .3s ease}
.t-card{transition:all .3s ease}
.t-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -14px rgba(99,102,241,.16)}
.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:#4f46e5}
.faq-arrow{transition:all .3s ease}
/* 走势图 */
.sum-chart{display:flex;align-items:flex-end;gap:6px;height:180px}
.sum-chart .bar{flex:1;border-radius:6px 6px 0 0;background:linear-gradient(180deg,#a5b4fc,#4f46e5);transition:height .5s ease;position:relative}
.sum-chart .bar span{position:absolute;top:-22px;left:50%;transform:translateX(-50%);font-size:11px;color:#475569;font-weight:600}
.dist-track{height:10px;border-radius:9999px;background:#f1f5f9;overflow:hidden}
.dist-fill{height:100%;border-radius:9999px;transition:width .6s ease}
.page-hero{background:linear-gradient(135deg,#eef2ff 0%,#ffffff 45%,#ede9fe 100%)}