:root{
  --bg:#f5f6fa; --panel:#fff; --line:#e6e8ee; --text:#222;
  --muted:#8a90a2; --primary:#3b6cff; --primary-d:#2f57d6;
  --ok:#2bbf6a; --warn:#e6a23c; --bad:#e25555; --soft:#eef2ff;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);font-size:14px}
.hidden{display:none!important}
a{text-decoration:none;color:inherit}

/* 登录 */
.login-wrap{height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#3b6cff,#6a4bff)}
.login-box{background:#fff;padding:36px 32px;border-radius:14px;width:320px;box-shadow:0 12px 40px rgba(0,0,0,.18)}
.login-box h1{margin:0;font-size:20px}
.login-box .sub{margin:6px 0 22px;color:var(--muted)}
.login-box input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;margin-bottom:14px;font-size:14px;outline:none}
.login-box input:focus{border-color:var(--primary)}
.login-box button{width:100%;padding:11px;border:0;border-radius:8px;background:var(--primary);color:#fff;font-size:15px;cursor:pointer}
.login-box button:hover{background:var(--primary-d)}
.err{color:var(--bad);font-size:12px;margin-top:8px;min-height:16px}

/* 布局 */
.app{display:flex;min-height:100vh}
.sidebar{width:200px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:18px 0}
.brand{padding:0 20px 18px;font-weight:700;color:var(--primary)}
.sidebar nav{display:flex;flex-direction:column;flex:1}
.sidebar nav a{padding:11px 20px;color:var(--muted);cursor:pointer;border-left:3px solid transparent}
.sidebar nav a:hover{background:var(--soft);color:var(--text)}
.sidebar nav a.active{background:var(--soft);color:var(--primary);border-left-color:var(--primary);font-weight:600}
.side-foot{padding:0 20px}
.link{background:none;border:none;color:var(--primary);cursor:pointer;font-size:13px;padding:0}
.main{flex:1;padding:26px 32px;overflow:auto}
h2{margin:0 0 18px;font-size:20px}
h3{margin:26px 0 12px;font-size:15px;color:var(--muted)}
.row-between{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}

/* 统计卡 */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}
.stat .num{font-size:26px;font-weight:700}
.stat .lbl{color:var(--muted);margin-top:4px}
.stat .sub{font-size:12px;color:var(--muted);margin-top:6px}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:13px}
.tbl th{background:#fafbff;color:var(--muted);font-weight:600}
.tbl tr:last-child td{border-bottom:none}
.tbl tr:hover td{background:#fafbff}
.mono{font-family:ui-monospace,Consolas,monospace;letter-spacing:.5px}

/* 按钮 */
button.primary{background:var(--primary);color:#fff;border:none;padding:9px 16px;border-radius:8px;cursor:pointer;font-size:13px}
button.primary:hover{background:var(--primary-d)}
button.link{background:none;border:none;color:var(--primary);cursor:pointer;font-size:13px;padding:9px 6px}

/* 标签 */
.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:600}
.tag.unused{background:#eef2ff;color:#3b6cff}
.tag.active{background:#e6f7ee;color:var(--ok)}
.tag.expired{background:#f3f4f6;color:var(--muted)}
.tag.revoked{background:#fdeaea;color:var(--bad)}

/* 卡密面板 */
.card-panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;margin-top:14px}
.gen-rows{display:flex;flex-direction:column;gap:10px}
.gen-row{display:flex;gap:10px;align-items:center}
.gen-row select,.gen-row input{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:13px}
.gen-row select{flex:1}
.gen-row input[type=number]{width:110px}
.gen-row .rm{cursor:pointer;color:var(--bad);border:none;background:none;font-size:16px}
.gen-actions{display:flex;align-items:center;gap:12px;margin-top:14px}
.msg{font-size:13px;color:var(--ok)}

/* 弹窗 */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center}
.modal-box{background:#fff;border-radius:12px;padding:24px;width:380px}
.modal-box label{display:block;margin:12px 0 6px;font-size:13px;color:var(--muted)}
.modal-box input[type=text]{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:14px}
.modal-box .check{display:flex;align-items:center;gap:8px;color:var(--text);margin-top:14px}
.modal-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:20px}
select#filterStatus{padding:8px 10px;border:1px solid var(--line);border-radius:8px}
@media(max-width:720px){.stat-grid{grid-template-columns:repeat(2,1fr)}.sidebar{width:150px}}