/* 极致性能优化：首屏样式内联，关键CSS精简，移除动画库，仅保留必要动效 */
        *{font-family:'Inter',system-ui,-apple-system,sans-serif;margin:0;padding:0;box-sizing:border-box;}
        body{background:#f9fafb;color:#1f2937;-webkit-font-smoothing:antialiased;}
        .container-pad{padding-left:1.25rem;padding-right:1.25rem;padding-top:3rem;padding-bottom:3rem;}
        @media (min-width:768px){.container-pad{padding-left:2rem;padding-right:2rem;padding-top:4rem;padding-bottom:4rem;}}
        .max-w-content{max-width:80rem;margin-left:auto;margin-right:auto;}
        .card-shadow{box-shadow:0 4px 12px rgba(0,0,0,0.04),0 0 2px rgba(0,0,0,0.02);transition:box-shadow 0.2s;}
        .card-shadow:hover{box-shadow:0 12px 24px -8px rgba(37,99,235,0.15);}
        .hover-lift{transition:transform 0.2s;} .hover-lift:hover{transform:translateY(-2px);}
        .bg-soft-blue{background-color:#f0f5ff;}
        .border-subtle{border:1px solid #f0f0f0;}
        /* 速度优化：图片使用内联svg或极简base64，无额外请求 */
        .stat-badge{background:#ffffff;border-radius:2rem;padding:0.25rem 1rem;font-size:0.85rem;font-weight:500;border:1px solid #e2e8f0;display:inline-flex;align-items:center;}
        /* 移除所有动画库，只保留关键帧，减少计算 */