*{box-sizing:border-box;margin:0;padding:0}:root{--color-up:#f5222d;--color-down:#52c41a;--color-primary:#1677ff;--color-bg:#f5f6f8;--color-card:#fff;--color-text:#1a1a1a;--color-text-secondary:#666;--color-text-tertiary:#999;--color-border:#e8e8e8;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px)}html{height:100%}body{background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;min-height:100%;padding-top:var(--safe-top);padding-bottom:var(--safe-bottom);overscroll-behavior-y:contain;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.app{max-width:500px;min-height:100vh;margin:0 auto;padding-bottom:60px;position:relative}.app-header{color:#fff;background:linear-gradient(135deg,#1677ff 0%,#4096ff 100%);border-radius:0 0 20px 20px;padding:20px 16px 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