:root{--ink:#202523;--muted:#6e7773;--line:#dfe3df;--paper:#fff;--surface:#f2f4f1;--accent:#c93830;--accent-dark:#9e2924;--green:#1f6254;--header-height:78px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:var(--paper);letter-spacing:0;margin:0;font-family:Inter,Microsoft YaHei,PingFang SC,Arial,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit;letter-spacing:0}button,a{-webkit-tap-highlight-color:#0000}img{max-width:100%}::selection{color:#fff;background:var(--accent)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}