.fade-enter-active,.fade-leave-active{transition:opacity .18s ease}.fade-enter-from,.fade-leave-to{opacity:0}:root{--brand-primary: #3a8dff;--brand-success: #07c160;--brand-danger: #ee0a24;--brand-bg: #f5f7fa;--brand-text: #1f1f1f;--brand-sub: #666}*{box-sizing:border-box}body{background:var(--brand-bg);color:var(--brand-text)}.page-wrap{min-height:100vh;display:flex;flex-direction:column}.brand-bar{background:linear-gradient(135deg,#3a8dff,#2566cc);color:#fff;padding:56px 24px 32px}.brand-bar h1{margin:0;font-size:22px;font-weight:600}.brand-bar p{margin:8px 0 0;font-size:13px;opacity:.85}.section-card{background:#fff;border-radius:14px;padding:18px;margin:14px;box-shadow:0 6px 16px #0000000a}.helper-text{color:var(--brand-sub);font-size:12px;margin-top:6px}.btn-pay{position:fixed;left:16px;right:16px;bottom:calc(env(safe-area-inset-bottom) + 16px)}