:root{--shell-color-bg: #0f1115;--shell-color-surface: #171a21;--shell-color-border: #262b36;--shell-color-text: #e6e8ec;--shell-color-text-muted: #9aa3b2;--shell-color-primary: #4f8cff;--shell-color-primary-contrast: #ffffff;--shell-sidebar-width: 240px;--shell-topbar-height: 56px;--shell-radius: 8px;--shell-font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--shell-color-bg);color:var(--shell-color-text);font-family:var(--shell-font)}a{color:var(--shell-color-primary);text-decoration:none}