:root{--kh-bg-surface: #FFFFFF;--kh-bg-page: #F7F7FA;--kh-bg-nav-active: #F0EEFF;--kh-bg-nav-hover: #F4F4F7;--kh-bg-badge: #F0EEFF;--kh-border-default: #E8E8ED;--kh-border-divider: #E2E2E8;--kh-border-nav-active: #DBD8FC;--kh-border-badge: #DBD8FC;--kh-accent-primary: #6C5EF6;--kh-accent-dark: #5248D4;--kh-accent-avatar-start: #7C6EF7;--kh-accent-avatar-end: #5A4FCF;--kh-text-primary: #111111;--kh-text-secondary: #777777;--kh-text-muted: #AAAAAA;--kh-text-white: #FFFFFF;--kh-header-h: 54px;--kh-outer-padding: 28px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;font-family:DM Sans,system-ui,sans-serif;background:var(--kh-bg-page);color:var(--kh-text-primary);-webkit-font-smoothing:antialiased}#app{display:flex;flex-direction:column;min-height:100vh}.kh-header{position:sticky;top:0;left:0;right:0;height:var(--kh-header-h);background:var(--kh-bg-surface);border-bottom:1px solid 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