:root{
  --bg:#0b1220;
  --card:#0f1a2e;
  --muted:#9db0d0;
  --text:#eaf1ff;
  --line:#223252;
  --btn:#1d2f55;
  --btn2:#2a427a;
  --ok:#2dd4bf;
  --warn:#fbbf24;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, #13274b 0%, var(--bg) 55%);
  color:var(--text);
}

.wrap{max-width:820px;margin:0 auto;padding:28px 16px 40px}
.head h1{margin:0 0 8px;font-size:30px;letter-spacing:.5px}
.sub{margin:0;color:var(--muted)}

.card{
  margin-top:18px;
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;
  padding:18px;
  backdrop-filter: blur(6px);
}

.output{
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  border:1px solid rgba(255,255,255,.10);
  border-radius:14px;
  padding:14px;
  background: rgba(0,0,0,.18);
}

.pwd{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size:18px;
  word-break: break-all;
  min-height:24px;
}

.grid{margin-top:14px;display:grid;gap:14px}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.row label{color:var(--muted)}
.lenBox{display:flex;align-items:center;gap:12px;flex:1;min-width:260px}
#len{flex:1}
.lenVal{
  min-width:44px;
  text-align:center;
  border:1px solid rgba(255,255,255,.12);
  border-radius:10px;
  padding:6px 10px;
  background: rgba(0,0,0,.12);
}

.checks{gap:10px}
.ck{
  display:flex;
  align-items:center;
  gap:8px;
  border:1px solid rgba(255,255,255,.10);
  padding:10px 12px;
  border-radius:12px;
  background: rgba(0,0,0,.10);
}

.btn{
  cursor:pointer;
  border:1px solid rgba(255,255,255,.14);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
  color:var(--text);
  padding:10px 14px;
  border-radius:12px;
  font-weight:600;
}
.btn:hover{border-color:rgba(255,255,255,.22)}
.btn:active{transform: translateY(1px)}
.primary{background: linear-gradient(180deg, rgba(42,66,122,.9), rgba(29,47,85,.9)); border-color: rgba(125,159,255,.25)}
.ghost{opacity:.9}

.toast{
  margin-top:10px;
  min-height:18px;
  color: var(--ok);
  font-size:13px;
}

.details summary{
  cursor:pointer;
  color:var(--muted);
}
.small{margin-top:10px;display:flex;flex-direction:column;gap:10px}
.hint{margin:0;color:var(--muted);font-size:13px}
.foot{margin-top:14px;color:var(--muted);font-size:12px}