:root{--paper:#fbfbf9;--surface:#fff;--surface-soft:#f5f6f3;--ink:#171916;--ink-soft:#62675f;--ink-faint:#92978f;--line:#e4e7e1;--line-strong:#d5d9d1;--accent:#237a4b;--accent-soft:#e8f3ec;--unread:#b36a32;--danger:#a9463b;--shadow:0 22px 70px #161b151f}[data-theme=dark]{--paper:#151714;--surface:#1b1e1a;--surface-soft:#222620;--ink:#edf0e9;--ink-soft:#adb3a9;--ink-faint:#7d8479;--line:#30352e;--line-strong:#41473e;--accent:#72bc8e;--accent-soft:#243c2d;--unread:#d19059;--danger:#db8278;--shadow:0 24px 80px #0000005c}*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Microsoft YaHei,sans-serif}button,input{color:inherit;font:inherit}button{cursor:pointer;border:0}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.splash,.auth-page{background:var(--paper);place-items:center;min-height:100dvh;display:grid}.splash{color:var(--ink-soft);align-content:center;gap:12px;font-size:14px}.brand-mark{border:1px solid var(--ink);width:48px;height:48px;color:var(--ink);border-radius:14px 14px 14px 4px;place-items:center;font-family:Songti SC,STSong,serif;font-size:24px;display:grid}.login-panel,.password-panel{text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:22px;flex-direction:column;align-items:center;width:min(420px,100vw - 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