:root{--primary: #4a90d9;--primary-dark: #357abd;--primary-light: #e8f0fe;--success: #34c759;--warning: #ff9500;--danger: #ff3b30;--bg: #f5f7fa;--bg-card: #ffffff;--text: #1a1a2e;--text-secondary: #6c757d;--text-light: #ffffff;--border: #e2e8f0;--shadow: 0 2px 8px rgba(0, 0, 0, .08);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .12);--radius: 12px;--radius-sm: 8px;--header-height: 56px;--tab-bar-height: 60px;--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden}#app{height:100%}#support-app{height:100%;display:flex;flex-direction:column;padding-top:var(--safe-area-top);padding-bottom:var(--safe-area-bottom)}.broadcast-popup{position:fixed;top:calc(var(--safe-area-top) + 8px);left:8px;right:8px;background:var(--primary);color:#fff;padding:12px 16px;border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow-lg);z-index:1000;cursor:pointer}.broadcast-content{flex:1;font-size:14px;line-height:1.4}.broadcast-close{background:none;border:none;color:#fff;font-size:20px;padding:0 0 0 12px;cursor:pointer;opacity:.8}.slide-down-enter-active,.slide-down-leave-active{transition:all .3s ease}.slide-down-enter-from,.slide-down-leave-to{transform:translateY(-100%);opacity:0}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}button{font-family:inherit;cursor:pointer}input,textarea{font-family:inherit;font-size:16px}