:root{color-scheme:light;--bg:#f4f7fb;--surface:#ffffff;--text:#0b1220;--body:#243044;--muted:#5b6b82;--border:#d7e0ec;--accent:#1d4ed8;--focus:#0f766e}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;font-family:Segoe UI,Helvetica Neue,Helvetica,Arial,sans-serif;background:radial-gradient(circle at top left,rgba(29,78,216,.08),transparent 34%),linear-gradient(180deg,#eef3f9 0,var(--bg) 42%,#e8eef6 100%);color:var(--text);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}a:focus-visible,button:focus-visible{outline:3px solid var(--focus);outline-offset:2px}::selection{background:color-mix(in srgb,var(--accent) 28%,white)}