*,*:before,*:after{box-sizing:border-box}:root{--brand: #ff6a00;--brand-soft: #fff3e8;--bg: #f5f7fa;--text: #1a1d26;--muted: #6b7280;--card: #ffffff;--radius: 12px;--shadow: 0 8px 24px rgba(0, 0, 0, .06)}html,body{margin:0;min-height:100%;font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--brand)}button{font:inherit;cursor:pointer}input{font:inherit}