:root{--bg: #f5f6f8;--panel: #ffffff;--line: #e3e6ea;--text: #1c2733;--muted: #6b7684;--accent: #2563eb;--danger: #dc2626;--ok: #16a34a}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:#101827;color:#cbd3de;display:flex;flex-direction:column;padding:16px 12px;gap:16px}.brand{font-weight:600;font-size:16px;color:#fff;padding:4px 8px}.sidebar nav{display:flex;flex-direction:column;gap:4px;flex:1}.sidebar nav a{color:#cbd3de;text-decoration:none;padding:8px 10px;border-radius:6px;font-size:14px}.sidebar nav a.active{background:#1f2a3d;color:#fff}.sidebar-footer{border-top:1px solid #223049;padding-top:12px;font-size:13px}.sidebar-footer .who{display:flex;flex-direction:column;gap:2px;margin-bottom:8px}.sidebar-footer .role{color:#8fa0b5;font-size:12px}.sidebar-footer button{width:100%;background:transparent;color:#cbd3de;border:1px solid #33425c;border-radius:6px;padding:6px;cursor:pointer}.content{flex:1;padding:24px 28px;max-width:1100px}h1{font-size:20px;margin:0 0 16px}.cards{display:flex;gap:16px;margin-bottom:24px;flex-wrap:wrap}.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px 20px;min-width:160px}.card .num{font-size:28px;font-weight:600}.card .label{color:var(--muted);font-size:13px;margin-top:4px}table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}th{background:#fafbfc;color:var(--muted);font-weight:500}tr:last-child td{border-bottom:none}.toolbar{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap;align-items:center}.toolbar input,.toolbar select{padding:7px 10px;border:1px solid var(--line);border-radius:6px;font-size:14px}.toolbar input{min-width:220px}button.primary{background:var(--accent);color:#fff;border:none;border-radius:6px;padding:8px 14px;font-size:14px;cursor:pointer}button.primary:disabled{opacity:.6;cursor:default}button.small{background:transparent;border:1px solid var(--line);border-radius:6px;padding:4px 10px;font-size:13px;cursor:pointer}button.small.danger{color:var(--danger);border-color:#f3c1c1}.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px}.tag.online{background:#e7f6ec;color:var(--ok)}.tag.offline{background:#f2f3f5;color:var(--muted)}.tag.active{background:#e8effc;color:var(--accent)}.tag.ended{background:#f2f3f5;color:var(--muted)}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:32px;width:360px;display:flex;flex-direction:column;gap:12px}.login-card h1{text-align:center}.login-card label{font-size:13px;color:var(--muted);display:block;margin-bottom:4px}.login-card input{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:6px;font-size:14px}.error{color:var(--danger);font-size:13px;min-height:18px}.muted{color:var(--muted);font-size:12px}.modal-bg{position:fixed;top:0;right:0;bottom:0;left:0;background:#10182773;display:flex;align-items:center;justify-content:center}.modal{background:var(--panel);border-radius:12px;padding:24px;width:420px;display:flex;flex-direction:column;gap:10px}.modal label{font-size:13px;color:var(--muted);display:block;margin-bottom:4px}.modal input,.modal select{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:6px;font-size:14px}.modal .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:8px}.modal .hint{color:var(--muted);font-size:13px;line-height:1.5}