:root{
    --primary:#5b6cff; --primary-d:#4453e0; --primary-l:#eef0ff;
    --bg:#f4f6fb; --card:#ffffff; --text:#1f2533; --muted:#8a93a6;
    --border:#eaeef5; --success:#22c55e; --warn:#f59e0b; --danger:#ef4444;
    --radius:14px; --shadow:0 6px 24px rgba(31,37,51,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",Segoe UI,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}
a{color:var(--primary);text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:14px;outline:none;border:1px solid var(--border);border-radius:10px;padding:10px 12px;width:100%;background:#fff;transition:.2s}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}

/* 按钮 */
.btn{border:none;border-radius:10px;padding:10px 18px;font-size:14px;background:var(--primary-l);color:var(--primary);transition:.2s;font-weight:500}
.btn:hover{filter:brightness(.97)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d)}
.btn-ghost{background:transparent;color:var(--muted)}
.btn-danger{background:#fee2e2;color:var(--danger)}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}
.btn-block{width:100%}
.icon-btn{background:transparent;border:none;font-size:18px;color:var(--muted);padding:6px 10px;border-radius:8px}
.icon-btn:hover{background:var(--primary-l);color:var(--primary)}

/* 登录 */
.login-view{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#5b6cff 0%,#8a5bff 100%)}
.login-card{width:380px;max-width:92vw;background:#fff;border-radius:20px;padding:40px 32px;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.login-logo{text-align:center;margin-bottom:28px}
.logo-badge{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,#5b6cff,#8a5bff);color:#fff;font-size:32px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 14px;box-shadow:0 8px 20px rgba(91,108,255,.4)}
.logo-badge.sm{width:34px;height:34px;font-size:18px;border-radius:10px;margin:0}
.login-logo h1{font-size:22px}
.login-logo p{color:var(--muted);font-size:12px;letter-spacing:1px}
.field{margin-bottom:18px}
.login-tip{text-align:center;color:var(--muted);font-size:12px;margin-top:14px}

/* 布局 */
.app-view{display:flex;min-height:100vh}
.sidebar{width:230px;background:#fff;border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:30;transition:.25s}
.sidebar-logo{display:flex;align-items:center;gap:10px;padding:20px 18px;font-weight:700;font-size:16px;border-bottom:1px solid var(--border)}
.sidebar-nav{flex:1;overflow-y:auto;padding:12px 10px}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;color:var(--text);font-weight:500;margin-bottom:4px;cursor:pointer;transition:.15s}
.nav-item:hover{background:var(--primary-l);color:var(--primary)}
.nav-item.active{background:var(--primary);color:#fff}
.nav-item .ico{width:18px;text-align:center;font-size:15px}
.nav-group{font-size:11px;color:var(--muted);padding:14px 14px 6px;letter-spacing:1px;text-transform:uppercase}
.sidebar-foot{padding:14px}
.main{margin-left:230px;flex:1;display:flex;flex-direction:column;min-width:0}

.topbar{height:62px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 22px;gap:14px;position:sticky;top:0;z-index:20}
.topbar-title{font-size:17px;font-weight:600}
.menu-toggle{display:none}
.topbar-user{margin-left:auto;display:flex;align-items:center;gap:10px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}
.content{padding:22px;flex:1}

/* 卡片 */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:18px}
.card-title{font-size:15px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between}

/* 统计 */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-bottom:18px}
.stat{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.stat .num{font-size:26px;font-weight:700;color:var(--primary)}
.stat .lbl{color:var(--muted);font-size:13px;margin-top:4px}

/* 工具栏 */
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:16px}
.toolbar .spacer{flex:1}
.toolbar input,.toolbar select{width:auto;min-width:140px}

/* 表格 */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:13px;white-space:nowrap}
th{background:#fafbfe;color:var(--muted);font-weight:600}
tr:hover td{background:#fafbff}
.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;background:var(--primary-l);color:var(--primary)}
.tag.green{background:#dcfce7;color:#16a34a}
.tag.gray{background:#f1f3f7;color:var(--muted)}
.thumb{width:54px;height:54px;border-radius:8px;object-fit:cover;background:#eee}
.actions-cell a,.actions-cell button{margin-right:6px}

/* 分页 */
.pager{display:flex;justify-content:center;align-items:center;gap:12px;margin-top:16px}
.pager .btn{padding:6px 14px}

/* 弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(15,20,35,.45);display:flex;align-items:center;justify-content:center;z-index:50}
.modal{width:520px;max-width:94vw;max-height:88vh;background:#fff;border-radius:16px;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border);font-weight:600}
.modal-body{padding:20px;overflow-y:auto}
.modal-foot{padding:14px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}
.form-row{margin-bottom:16px}
.form-row .hint{color:var(--muted);font-size:12px;margin-top:4px}
.img-preview{max-width:90vw;max-height:84vh;border-radius:10px}
.img-input-row{display:flex;gap:10px;align-items:center}
.img-input-row img{width:80px;height:80px;object-fit:cover;border-radius:8px;border:1px solid var(--border)}

/* toast */
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%) translateY(-20px);background:#1f2533;color:#fff;padding:11px 22px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:99}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.ok{background:#16a34a}.toast.err{background:#ef4444}

/* 设置分组 */
.set-group{border:1px solid var(--border);border-radius:12px;margin-bottom:16px;overflow:hidden}
.set-group h3{background:#fafbfe;padding:12px 16px;font-size:14px;border-bottom:1px solid var(--border)}
.set-group .set-body{padding:16px}
.set-row{display:grid;grid-template-columns:200px 1fr;gap:14px;align-items:center;margin-bottom:14px}
.set-row:last-child{margin-bottom:0}
.set-row .lbl{font-weight:500}

/* tabs */
.tabs{display:flex;gap:6px;margin-bottom:16px;flex-wrap:wrap}
.tab{padding:8px 16px;border-radius:9px;background:#f1f3f7;color:var(--muted);cursor:pointer;font-weight:500}
.tab.active{background:var(--primary);color:#fff}

/* 响应式 */
@media (max-width:860px){
    .sidebar{transform:translateX(-100%)}
    .sidebar.open{transform:translateX(0)}
    .main{margin-left:0}
    .menu-toggle{display:block}
    .set-row{grid-template-columns:1fr;gap:6px}
    .content{padding:14px}
}

/* 顶部加载进度条 */
#loading-bar{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,#5b6cff,#8a5bff);box-shadow:0 0 8px rgba(91,108,255,.6);z-index:200;opacity:0;transition:width .25s ease,opacity .25s}
#loading-bar.show{opacity:1;width:75%;animation:lb 1s linear infinite}
@keyframes lb{0%{width:10%}50%{width:80%}100%{width:95%}}

/* 加载遮罩与旋转 */
.loading-mask{position:fixed;inset:0;background:rgba(15,20,35,.18);display:flex;align-items:center;justify-content:center;z-index:120}
.spinner{width:38px;height:38px;border:4px solid rgba(91,108,255,.25);border-top-color:#5b6cff;border-radius:50%;animation:spin .8s linear infinite}
.spinner.sm{width:22px;height:22px;border-width:3px}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-box{display:flex;align-items:center;justify-content:center;gap:10px;padding:40px;color:var(--muted)}
.empty-state{padding:40px;text-align:center;color:var(--muted);background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow)}
.list-retry{cursor:pointer;color:#ef4444;user-select:none}
.list-retry:hover{text-decoration:underline}