:root{color-scheme:light dark;--bg:#f7f8fa;--panel:#fff;--text:#202124;--line:#dce0e5;--accent:#243c62;--muted:#667085;font-family:system-ui,"Noto Sans CJK SC",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}main{max-width:780px;margin:8vh auto;padding:24px}header{display:flex;align-items:center;gap:12px}h1{font-size:24px;margin:0}h2{font-size:20px}h3{font-size:16px}section{background:var(--panel);padding:24px;border:1px solid var(--line);border-radius:12px;margin-top:20px}form{display:grid;gap:16px}label{display:grid;gap:7px;font-size:14px}input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:7px;background:var(--panel);color:inherit;font:inherit;min-height:42px}button,.button{border:1px solid var(--accent);border-radius:7px;background:var(--accent);color:#fff;font:inherit;padding:10px 14px;cursor:pointer;text-decoration:none;display:inline-block;text-align:center}button:disabled{opacity:.6;cursor:wait}.secondary{background:transparent;color:var(--text);border-color:var(--line)}#logout{margin-top:20px}.help{color:var(--muted);font-size:14px}#notice{white-space:pre-wrap}#notice[data-error]{color:#b42318}.user{display:flex;flex-wrap:wrap;align-items:center;gap:10px;border-top:1px solid var(--line);padding:16px 0}.user span{flex:1;min-width:160px;overflow-wrap:anywhere}.actions{display:flex;gap:10px;justify-content:end}dialog{color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:12px;max-width:calc(100% - 32px);width:420px;padding:24px}dialog::backdrop{background:#0006}[hidden]{display:none!important}:focus-visible{outline:3px solid #6599db;outline-offset:3px}@media(prefers-color-scheme:dark){:root{--bg:#17181b;--panel:#202226;--text:#e9eaee;--line:#43464e;--accent:#b6c9e5;--muted:#abb0ba}header img{filter:invert(1)}button,.button{color:#18202e}.secondary{color:var(--text)}#notice[data-error]{color:#fda29b}}@media(max-width:500px){main{margin:3vh auto;padding:16px}section{padding:18px}}