:root{--primary:#0B3D6B;--accent:#F26B1F;--bg:#F7F9FC;--text:#222;--muted:#888;--border:#e0e4ea;--err:#dc3545;--ok:#28a745}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC',sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,var(--primary) 0%,#1a5a8e 100%)}
.login-box{background:#fff;padding:40px;border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,.15);width:360px;max-width:90vw}
.login-box h1{color:var(--primary);font-size:24px;margin-bottom:4px}
.login-box .sub{color:var(--muted);font-size:13px;margin-bottom:24px}
.login-box label{display:block;margin:12px 0 4px;font-size:13px;color:#555}
.login-box input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px}
.login-box input:focus{outline:none;border-color:var(--primary)}
.login-box button{width:100%;padding:12px;margin-top:20px;background:var(--accent);color:#fff;border:none;border-radius:6px;font-size:15px;font-weight:500;cursor:pointer}
.login-box button:hover{background:#e15d0f}
.login-box .err{color:var(--err);font-size:13px;margin-top:10px;min-height:18px}
.login-box .hint{color:var(--muted);font-size:11px;margin-top:16px;text-align:center}
.layout{display:flex;min-height:100vh}
.sidebar{width:220px;background:var(--primary);color:#fff;padding:20px 0}
.sidebar .brand{padding:0 20px 20px;border-bottom:1px solid rgba(255,255,255,.15);font-size:16px;font-weight:600}
.sidebar ul{list-style:none;margin-top:16px}
.sidebar li a{display:block;padding:12px 20px;color:rgba(255,255,255,.85);text-decoration:none;font-size:14px;transition:all .15s}
.sidebar li a:hover,.sidebar li a.active{background:rgba(255,255,255,.1);color:#fff}
.main{flex:1;padding:24px 32px;overflow-x:auto}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.topbar h2{font-size:20px;color:var(--primary)}
.topbar .user{color:var(--muted);font-size:14px}
.topbar .user a{color:var(--accent);text-decoration:none;margin-left:12px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}
.card{background:#fff;padding:20px;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.card .num{font-size:28px;font-weight:600;color:var(--primary)}
.card .label{color:var(--muted);font-size:13px;margin-top:4px}
.panel{background:#fff;border-radius:8px;padding:20px;box-shadow:0 1px 3px rgba(0,0,0,.06);margin-bottom:16px}
.panel h3{font-size:15px;color:var(--primary);margin-bottom:12px}
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}
th{background:#f5f7fa;color:#555;font-weight:500}
tr:hover td{background:#fafbfc}
.btn{display:inline-block;padding:6px 14px;background:var(--primary);color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:13px;text-decoration:none}
.btn:hover{opacity:.9}
.btn-sm{padding:4px 10px;font-size:12px}
.btn-danger{background:var(--err)}
.btn-accent{background:var(--accent)}
.btn-ok{background:var(--ok)}
.form-row{margin-bottom:12px}
.form-row label{display:block;font-size:13px;color:#555;margin-bottom:4px}
.form-row input,.form-row textarea,.form-row select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:4px;font-size:14px;font-family:inherit}
.form-row textarea{min-height:80px;resize:vertical}
.tag{display:inline-block;padding:2px 8px;background:#e8f4fd;color:var(--primary);border-radius:3px;font-size:12px;margin-right:4px}
.empty{color:var(--muted);text-align:center;padding:30px;font-size:14px}
@media (max-width:768px){.sidebar{width:60px}.sidebar .brand span,.sidebar li a span{display:none}.main{padding:16px}}