:root.light{--bg:#FAFAFA;--text:#333333;--text-soft:#999999;--card:#FFFFFF;--accent:#246BEB;--accent-soft:#EEF4FF;--border:#DDD;--error:#FF3B30;--button-light:#EEF4FF;--button-text:#FFFFFF}:root.dark{--bg:#121212;--text:#FFFFFF;--text-soft:#999999;--card:#333333;--accent:#246BEB;--accent-soft:#EEF4FF;--border:#444;--error:#FF453A;--button-light:#246BEB;--button-text:#FFFFFF}body,html{background:var(--bg);color:var(--foreground);font-family:Arial,Helvetica,sans-serif;transition:background .3s ease,color .3s ease;max-width:100vw;overflow-x:hidden}a{color:var(--accent);text-decoration:none}*{box-sizing:border-box;padding:0;margin:0}