*{box-sizing:border-box}
body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;background:#f4f6f8;color:#172033}
a{color:#1769e0}
.admin-shell{display:flex;min-height:100vh}
.sidebar{width:232px;background:#102033;color:#fff;padding:22px 16px;position:sticky;top:0;height:100vh}
.sidebar .brand{font-size:20px;font-weight:700;margin-bottom:28px;letter-spacing:.5px}
.sidebar nav a{display:block;color:#dbe7f3;text-decoration:none;padding:12px 14px;border-radius:8px;margin-bottom:6px}
.sidebar nav a.active,.sidebar nav a:hover{background:#1f7aec;color:#fff}
.main{flex:1;padding:24px;min-width:0}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.topbar h1{margin:0;font-size:26px}
.topbar p{margin:6px 0 0;color:#6b7788}
.account{display:flex;gap:12px;align-items:center}
.account .name{font-weight:600}
.btn{display:inline-block;background:#1f7aec;color:#fff;text-decoration:none;border:0;border-radius:8px;padding:10px 14px;cursor:pointer;font:inherit}
.btn:hover{background:#1769e0}
.btn.secondary{background:#eef3f8;color:#172033}
.btn.danger{background:#be3a34}
.btn.danger:hover{background:#a52e29}
.btn.ghost{background:#fff;border:1px solid #cfd8e3;color:#172033}
.btn-sm{padding:6px 10px;font-size:13px;border-radius:6px}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.card{background:#fff;border:1px solid #e1e7ef;border-radius:8px;padding:18px;margin-bottom:16px}
.card h2{margin:0 0 10px;font-size:18px}
.card p{color:#6b7788;line-height:1.7;margin:6px 0}
.metric strong{display:block;font-size:28px;margin-top:8px}
.metric small{display:block;color:#6b7788;margin-top:4px}
.notice{padding:12px 14px;border-radius:8px;margin-bottom:14px}
.notice.success{background:#eaf8ef;color:#116b39}
.notice.error{background:#fff0ee;color:#9d2f2a}
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;margin-bottom:6px}
.field small{display:block;margin-top:6px;color:#6b7788}
.field input,.field textarea,.field select{width:100%;border:1px solid #cfd8e3;border-radius:8px;padding:10px;background:#fff;font:inherit}
.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:12px;flex-wrap:wrap}
.toolbar h2{margin:0}
.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;background:#f8fafc;border:1px solid #e1e7ef;border-radius:8px;padding:16px;margin-bottom:16px}
.form-actions{grid-column:1/-1;display:flex;gap:10px;align-items:center}
.table-wrap{overflow:auto;background:#fff;border:1px solid #e1e7ef;border-radius:8px}
table{width:100%;border-collapse:collapse;min-width:680px}
th,td{text-align:left;border-bottom:1px solid #e8edf3;padding:12px;vertical-align:middle}
th{background:#f8fafc;font-weight:700}
.inline-form{display:inline}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;background:#eaf2ff;color:#1458ba;font-size:12px}
.badge.green{background:#eaf8ef;color:#116b39}
.badge.red{background:#fff0ee;color:#9d2f2a}
.badge.gray{background:#eef1f5;color:#5b6b80}
.check-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.check-grid label{border:1px solid #e1e7ef;background:#f8fafc;border-radius:8px;padding:8px 10px;display:flex;gap:6px;align-items:center;font-size:14px;cursor:pointer}
.quick-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:16px}
.quick-card{display:block;background:#f8fafc;border:1px solid #e1e7ef;border-radius:8px;padding:20px 12px;text-align:center;color:#172033;font-weight:600;text-decoration:none}
.quick-card:hover{border-color:#1f7aec;color:#1769e0}
.bar-chart{display:flex;align-items:flex-end;gap:14px;height:220px;padding:10px 6px 0}
.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;height:100%;justify-content:flex-end}
.bar-col .bar{width:100%;background:linear-gradient(180deg,#3d8bff,#1f5fd0);border-radius:6px 6px 0 0;min-height:4px}
.bar-col .bar-label{font-size:12px;color:#6b7788}
.bar-col .bar-value{font-size:12px;color:#172033;font-weight:600}
.login-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:#eef3f8}
.login-card{width:min(960px,100%);background:#fff;border-radius:8px;border:1px solid #e1e7ef;padding:26px}
.login-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.login-card h1{margin:0 0 6px;font-size:26px}
.login-sub{color:#6b7788;margin:0 0 18px}
.login-card h2{margin:0 0 12px;font-size:18px}
.role-list{display:grid;gap:8px}
.role-item{width:100%;background:#f8fafc;border:1px solid #e1e7ef;border-radius:8px;padding:10px;text-align:left;color:#172033;font:inherit;cursor:pointer}
.role-item:hover{border-color:#1f7aec;background:#eef6ff}
.my-menu{position:relative}
.my-trigger{background:#fff;border:1px solid #cfd8e3;border-radius:8px;padding:9px 14px;cursor:pointer;color:#172033;font:inherit}
.my-trigger:hover{border-color:#1f7aec}
.my-dropdown{position:absolute;right:0;top:100%;margin-top:6px;background:#fff;border:1px solid #e1e7ef;border-radius:8px;box-shadow:0 12px 30px rgba(16,32,51,.16);min-width:170px;display:none;z-index:30;overflow:hidden}
.my-menu.open .my-dropdown{display:block}
.my-dropdown a{display:block;padding:11px 14px;color:#172033;text-decoration:none}
.my-dropdown a:hover{background:#f4f7fb;color:#1769e0}
.my-dropdown .divider{border-top:1px solid #e8edf3;margin:4px 0}
.msg-list{display:grid;gap:12px}
.msg-item{background:#f8fafc;border:1px solid #e1e7ef;border-radius:8px;padding:14px 16px}
.msg-item.unread{border-color:#9bc2ff;background:#edf5ff}
.msg-item .msg-head{display:flex;justify-content:space-between;gap:12px;margin-bottom:6px}
.msg-item .msg-title{font-weight:700}
.msg-item .msg-time{color:#8a95a8;font-size:13px;white-space:nowrap}
.msg-item .msg-body{color:#4a5668;line-height:1.7}
.empty{color:#8a95a8;text-align:center;padding:30px 10px}
@media(max-width:900px){.admin-shell{display:block}.sidebar{position:static;width:auto;height:auto}.sidebar nav{display:flex;overflow:auto;gap:8px}.sidebar nav a{white-space:nowrap;margin-bottom:0}.main{padding:16px}.topbar{align-items:flex-start;gap:12px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-grid,.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.login-grid{grid-template-columns:1fr}table{min-width:560px}}
@media(max-width:520px){.grid{grid-template-columns:1fr}.quick-grid,.form-grid{grid-template-columns:1fr}.check-grid{grid-template-columns:1fr}.topbar{display:block}.account{margin-top:12px}}