:root{
  --primary:#6d28d9;--primary-dark:#5b21b6;--primary-light:#f3f0ff;
  --bg:#f1f5f9;--card:#ffffff;--border:#e2e8f0;
  --text:#1e293b;--muted:#64748b;--muted-2:#94a3b8;
  --green:#059669;--green-bg:#ecfdf5;--yellow:#b45309;--yellow-bg:#fffbeb;
  --blue:#1d4ed8;--blue-bg:#eff6ff;--gray:#475569;--gray-bg:#f1f5f9;--red:#b91c1c;--red-bg:#fef2f2;
  --radius:12px;--shadow:0 1px 3px rgba(15,23,42,.08),0 1px 2px rgba(15,23,42,.04);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Microsoft YaHei","PingFang SC",sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}
button{font-family:inherit;font-size:14px;cursor:pointer;border:none;border-radius:8px;transition:.15s}
input,select,textarea{font-family:inherit;font-size:14px;width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--text);outline:none;transition:.15s}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
textarea{resize:vertical;min-height:80px;line-height:1.7}
a{color:var(--primary);text-decoration:none}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;font-weight:500}

/* ---------- 登录页 ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#6d28d9,#4338ca)}
.login-card{background:#fff;border-radius:16px;padding:40px 36px;width:380px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.login-card h1{font-size:20px;font-weight:600;text-align:center;margin-bottom:6px}
.login-card .sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:26px}
.login-card .field{margin-bottom:16px}
.btn-primary{background:var(--primary);color:#fff;padding:11px 18px;width:100%;font-weight:500}
.btn-primary:hover{background:var(--primary-dark)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.alert{padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:14px}
.alert-error{background:var(--red-bg);color:var(--red)}
.alert-ok{background:var(--green-bg);color:var(--green)}

/* ---------- 布局 ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:230px;background:#4c1d95;color:#fff;display:flex;flex-direction:column;flex-shrink:0}
.sidebar .brand{padding:22px 20px;border-bottom:1px solid rgba(255,255,255,.12)}
.sidebar .brand h1{font-size:16px;font-weight:600}
.sidebar .brand p{font-size:12px;color:#c4b5fd;margin-top:2px}
.nav{padding:12px 10px;flex:1}
.nav-item{display:block;padding:11px 14px;border-radius:8px;color:#ddd6fe;font-size:14px;margin-bottom:3px;cursor:pointer}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item.active{background:rgba(255,255,255,.16);color:#fff;font-weight:500}
.sidebar .foot{padding:14px 18px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#c4b5fd}
.sidebar .foot button{background:rgba(255,255,255,.12);color:#fff;padding:7px 12px;width:100%;margin-top:8px}
.sidebar .foot button:hover{background:rgba(255,255,255,.22)}
.main{flex:1;padding:26px 30px;overflow:auto;max-height:100vh}
.page-title{font-size:20px;font-weight:600;margin-bottom:4px}
.page-desc{color:var(--muted);font-size:13px;margin-bottom:20px}

/* ---------- 卡片 ---------- */
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.stat .label{color:var(--muted);font-size:13px}
.stat .value{font-size:28px;font-weight:600;margin-top:6px;line-height:1.2}
.stat .hint{font-size:12px;color:var(--muted-2);margin-top:4px}
.section{margin-bottom:22px}
.section h3{font-size:15px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between}

/* ---------- 表格 ---------- */
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;padding:11px 12px;background:#f8fafc;color:var(--muted);font-weight:500;border-bottom:1px solid var(--border);white-space:nowrap}
td{padding:11px 12px;border-bottom:1px solid #f1f5f9;vertical-align:top}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fafbfc}
.table-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.table-scroll{overflow-x:auto}

/* ---------- 标签 ---------- */
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;white-space:nowrap}
.badge-待处理{background:var(--yellow-bg);color:var(--yellow)}
.badge-处理中{background:var(--blue-bg);color:var(--blue)}
.badge-已回复{background:var(--green-bg);color:var(--green)}
.badge-已关闭{background:var(--gray-bg);color:var(--gray)}
.badge-published{background:var(--green-bg);color:var(--green)}
.badge-draft{background:var(--gray-bg);color:var(--gray)}
.badge-active{background:var(--green-bg);color:var(--green)}

/* ---------- 按钮 ---------- */
.btn{border:1px solid var(--border);background:#fff;color:var(--text);padding:7px 14px}
.btn:hover{background:#f8fafc;border-color:var(--muted-2)}
.btn-sm{padding:5px 10px;font-size:12px;border-radius:6px}
.btn-link{background:none;border:none;color:var(--primary);padding:4px 6px;font-size:13px}
.btn-link:hover{text-decoration:underline}
.btn-link.danger{color:var(--red)}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.btn-purple{background:var(--primary);color:#fff;border:none;padding:8px 16px}
.btn-purple:hover{background:var(--primary-dark)}

/* ---------- 表单 ---------- */
.form-row{margin-bottom:15px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.55);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto;z-index:50}
.modal{background:#fff;border-radius:14px;width:100%;max-width:720px;padding:24px;box-shadow:0 24px 60px rgba(0,0,0,.3)}
.modal h2{font-size:17px;font-weight:600;margin-bottom:18px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}

/* ---------- 图表 ---------- */
.bars{display:flex;align-items:flex-end;gap:6px;height:130px;padding-top:10px}
.bars .bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;justify-content:flex-end}
.bars .bar{width:100%;background:var(--primary);border-radius:4px 4px 0 0;min-height:2px}
.bars .bar.sec{background:#a78bfa}
.bars .bar-label{font-size:10px;color:var(--muted-2);white-space:nowrap}
.hbar{margin-bottom:12px}
.hbar .top{display:flex;justify-content:space-between;font-size:13px;margin-bottom:5px}
.hbar .track{height:9px;background:#f1f5f9;border-radius:999px;overflow:hidden}
.hbar .fill{height:100%;background:var(--primary);border-radius:999px}
.legend{display:flex;gap:16px;font-size:12px;color:var(--muted);margin-bottom:10px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px}

/* ---------- 其他 ---------- */
.empty{text-align:center;padding:40px 20px;color:var(--muted-2)}
.thumb{width:56px;height:56px;object-fit:cover;border-radius:8px;border:1px solid var(--border);background:#f8fafc}
.img-picker{border:2px dashed var(--border);border-radius:10px;padding:18px;text-align:center;color:var(--muted);cursor:pointer;background:#fafbfc}
.img-picker:hover{border-color:var(--primary);background:var(--primary-light)}
.code{background:#0f172a;color:#e2e8f0;padding:12px 14px;border-radius:8px;font-family:ui-monospace,Consolas,monospace;font-size:12px;overflow-x:auto;white-space:pre;line-height:1.7}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.tab{padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:13px}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.muted{color:var(--muted);font-size:13px}
.mono{font-family:ui-monospace,Consolas,monospace;font-size:12px}
.pager{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin-top:14px;font-size:13px;color:var(--muted)}
.notice{background:var(--yellow-bg);color:var(--yellow);border-radius:8px;padding:12px 14px;font-size:13px;margin-bottom:16px}