:root{--paper:#f5f8fb;--surface:#fff;--ink:#12213a;--muted:#6e7d92;--line:#dbe4ed;--blue:#2056d8;--sky:#a9ddff;--cyan:#65d5e8;--orange:#ff9364;--lilac:#a997e8;--green:#36a77e;--display:"Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--mono:"Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--radius:18px}*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);font-family:var(--display);font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;margin:0}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit}a{color:inherit;text-decoration:none}:focus-visible{outline-offset:3px;outline:3px solid #2056d84d}.auth-gate{z-index:500;background:radial-gradient(circle at 20% 10%,#a9ddff80,#0000 32%),#eef3f8;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.auth-gate[hidden]{display:none}.auth-card 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