:root{--red: #b01e28;--red-deep: #8e1022;--red-dark: #6d0a1a;--red-tint: #fbf1f1;--gold: #c9a15e;--gold-soft: #e8d5b0;--ink: #2b2226;--ink-soft: #7a6a6e;--paper: #ffffff;--paper-warm: #faf6f1;--line: #efe4e4;--shadow: 0 10px 40px rgba(142, 16, 34, .08);--serif: "Noto Serif SC", "Songti SC", "SimSun", serif;--sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;--sidebar: #7a0e1e}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--sans);color:var(--ink);font-size:14px;background:var(--paper-warm)}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:14px}.login-mask{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,var(--red-dark) 0%,var(--red-deep) 50%,var(--red) 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