:root{--sidebar-width:250px;--sidebar-bg:#2c2c2c;--sidebar-header-bg:#252525;--color-primary:#0052cc;--color-primary-hover:#1a75ff;--sidebar-text:hsla(0,0%,100%,.85);--color-content-bg:#f8f9fa;--color-white:#fff;--color-text:#213547;--color-text-muted:#6b7280;--color-border:#e2e8f0;--color-error:#dc2626;--color-success:#16a34a;--color-class-block:#dbeafe;--color-class-border:#93c5fd;--color-shift-block:#0052cc;--color-manual-block:#fef3c7;--color-manual-border:#fcd34d;--border-radius:8px;--font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Roboto","Oxygen","Ubuntu","Cantarell","Fira Sans","Droid Sans","Helvetica Neue",sans-serif;--transition-speed:200ms}*,:after,:before{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);color:var(--color-text);background-color:var(--color-content-bg);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}button{cursor:pointer}button,input,select,textarea{font-family:inherit}