/* 深海蓝主题 */
:root {
    --sidebar-bg: #0d2137;
    --sidebar-active: #007bff;
    --sidebar-text: rgba(255,255,255,0.75);
    --sidebar-text-hover: #fff;
    --topbar-border: #e8e8e8;
    --accent-gradient: linear-gradient(135deg, #007bff, #00d2ff);
    --sidebar-width: 220px;
    --topbar-height: 56px;

    /* 前台主题变量 */
    --fe-navbar-gradient: linear-gradient(135deg, #0d3b6e 0%, #007bff 100%);
    --fe-navbar-solid: #007bff;
    --fe-header-bg: #007bff;
    --fe-header-text: #fff;
    --fe-accent: #007bff;
}