:root{--blue-700:#174b9a;--blue-600:#245fca;--blue-100:#e6efff;--blue-50:#f2f6ff;--ink:#172033;--muted:#68748a;--line:#e5eaf2;--page:#f4f7fb;--surface:#fff;--green:#166534;--green-bg:#ecfdf3;--green-border:#b7e4c7;--orange:#92400e;--orange-bg:#fff7e6;--orange-border:#f6d58a;--red:#991b1b;--red-bg:#fef2f2;--red-border:#fecaca;--gray-bg:#f1f3f6;--gray-border:#d8dfeb;--gray-text:#5b6472}*{box-sizing:border-box}html{background:var(--page)}body{color:var(--ink);background:var(--page);margin:0;font-family:Inter,Microsoft YaHei,PingFang SC,system-ui,sans-serif}button,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}