*{margin:0;padding:0;box-sizing:border-box}html,body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:#f5f5f5;color:#333;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}#app{max-width:768px;margin:0 auto;min-height:100vh;background-color:#fff}.usage-limit-tag{font-size:12px}.vip-highlight{background:linear-gradient(135deg,gold,#fa0);color:#000;font-weight:700}.vip-badge{background:linear-gradient(135deg,gold,#fa0);color:#1a1a1a;padding:2px 8px;border-radius:12px;font-size:11px;font-weight:700;letter-spacing:1px}.free-badge{background:#e0e0e0;color:#666;padding:2px 8px;border-radius:12px;font-size:11px;font-weight:600}.main-content{padding-bottom:70px}.result-fade-enter-active{transition:all .5s ease}.result-fade-enter-from{opacity:0;transform:translateY(20px)}@keyframes shimmer{0%{background-position:-200% center}to{background-position:200% center}}.shimmer-bg{background:linear-gradient(90deg,gold,#fa0,gold,#fa0);background-size:200% auto;animation:shimmer 3s linear infinite}.tool-card{transition:transform .2s ease,box-shadow .2s ease}.tool-card:active{transform:scale(.98)}