:root{
  --bg:#f6f8fc; --card:#fff; --text:#202124; --muted:#5f6368; --line:#dfe1e5;
  --soft:#f1f3f4; --blue:#1877ff; --blued:#0f5fe0; --danger:#b91c1c; --ring:rgba(24,119,255,.28);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0f1420;--card:#171d2b;--text:#e8eaed;--muted:#9aa0a6;--line:#2a3345;--soft:#1a2130;--blue:#8ab4f8;--blued:#a9c7ff;--ring:rgba(138,180,248,.3)}
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:36px 32px;box-shadow:0 10px 40px rgba(0,0,0,.08);text-align:center}
.word{font-weight:800;letter-spacing:-.02em;font-size:34px}
.word .w1{color:var(--text)}
.word .w2{color:var(--blue);margin-left:.24em}
.brand{margin-bottom:8px}
.sub{color:var(--muted);margin:0 0 24px}
.err{background:#fdecec;color:#b91c1c;border-radius:10px;padding:10px 14px;font-size:14px;margin-bottom:16px;text-align:left}
@media (prefers-color-scheme:dark){.err{background:#3a1a1a;color:#f6b0b0}}
.gbtn{display:flex;justify-content:center;min-height:0}
.gbtn[hidden]{display:none}
.or{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px;margin:18px 0}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
form{display:flex;flex-direction:column;gap:12px}
input{height:50px;border:1px solid var(--line);border-radius:12px;padding:0 16px;font-size:16px;background:var(--card);color:var(--text);outline:none}
input:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--ring)}
.primary{height:50px;border:none;border-radius:12px;background:var(--blue);color:#fff;font-size:16px;font-weight:700;cursor:pointer}
.primary:hover{background:var(--blued)}
.link{background:none;border:none;color:var(--muted);font-size:14px;cursor:pointer}
.link:hover{color:var(--text)}
.hint{color:var(--muted);font-size:14px;margin:0 0 4px;text-align:left}
.legal{color:var(--muted);font-size:12px;line-height:1.6;margin:22px 0 0}
.legal b{color:var(--text)}
/* account */
.account{text-align:left}
.account .brand{text-align:center}
.who{display:flex;align-items:center;gap:14px;margin:18px 0 8px;padding:16px;background:var(--soft);border-radius:14px}
.avatar{width:52px;height:52px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:22px;overflow:hidden;flex:none}
.avatar img{width:100%;height:100%;object-fit:cover}
.who .nm{font-weight:700}
.who .em{color:var(--muted);font-size:14px}
.sec{font-size:13px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:22px 0 10px}
.applist{display:grid;gap:8px}
.applist a{display:flex;justify-content:space-between;align-items:center;padding:13px 16px;border:1px solid var(--line);border-radius:12px;color:var(--text)}
.applist a:hover{background:var(--soft);text-decoration:none}
.applist a span{color:var(--muted)}
.danger{margin-top:22px;width:100%;height:48px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--danger);font-weight:700;cursor:pointer}
.danger:hover{background:#fdecec}
@media (prefers-color-scheme:dark){.danger:hover{background:#3a1a1a}}