:root{--color-bg: #F5F7FA;--color-primary: #4F46E5;--color-secondary: #FF6B6B;--color-text: #1F2937;--color-text-muted: #6B7280;--font-family: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text);line-height:1.5;font-weight:400;overflow-x:hidden}a{color:var(--color-primary);text-decoration:none;transition:color .3s}a:hover{color:var(--color-secondary)}button{cursor:pointer}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--color-bg)}::-webkit-scrollbar-thumb{background:#333;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}