:root{color-scheme:dark;--bg:#15100C;--txt:#F5EEE6;--accent:#D49A6A;--grad:linear-gradient(135deg,#E3B98A,#C9824F)}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--txt);font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif}@keyframes mdspin{to{transform:rotate(1turn)}}