*{box-sizing:border-box;margin:0;padding:0}:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--primary-color: #667eea;--primary-dark: #5568d3;--secondary-color: #764ba2;--text-primary: #1a1a1a;--text-secondary: #666;--text-tertiary: #999;--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--bg-tertiary: #fafafa;--border-color: #e0e0e0;--border-radius: 12px;--border-radius-lg: 20px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--transition: all .2s ease;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--safe-area-top: env(safe-area-inset-top);--safe-area-bottom: env(safe-area-inset-bottom);--safe-area-left: env(safe-area-inset-left);--safe-area-right: env(safe-area-inset-right)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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scale(1)}}.nav-item:active{transform:scale(.95)}.nav-item.active{color:var(--primary-color)}.nav-item.active:after{content:"";position:absolute;bottom:0;left:50%;transform:translate(-50%);width:40px;height:3px;background:var(--primary-gradient);border-radius:3px 3px 0 0}.nav-icon{font-size:22px;height:32px;display:flex;align-items:center;justify-content:center}.nav-label{font-size:11px;height:16px;display:flex;align-items:center}.nav-logo{display:flex;flex-direction:column;align-items:center;gap:2px}.logo-circle{width:32px;height:32px;border-radius:50%;background:var(--primary-gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px}.logo-text{font-weight:600;font-size:11px;height:16px;display:flex;align-items:center;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn{padding:14px 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