:root{--primary-bg-color: #000000;--text-color: #ffffff;--loader-ring-color: #444;--progress-bar-bg-color: #444;--button-active-bg-color: #ffffff;--button-active-text-color: #000000;--font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif}html{scroll-behavior:smooth}body{background-color:var(--primary-bg-color);color:var(--text-color);font-family:var(--font-family);display:flex;flex-direction:column;align-items:center;min-height:100vh;margin:0;padding:0 20px;box-sizing:border-box;overflow-x:hidden}