:root{
  --primary:#6d28d9; --primary-light:#f3f0ff; --primary-dark:#5b21b6;
  --blue:#0ea5e9; --green:#16a34a; --warn:#d98a00; --red:#e5484d;
  --ink:#1f2329; --sub:#5b6470; --line:#e7e9ee; --bg:#f5f6f8; --card:#fff;
  --radius:12px; --shadow:0 1px 3px rgba(0,0,0,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);font-size:14px}

/* layout */
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#6d28d9,#0e7490)}
.login-card{background:#fff;border-radius:20px;padding:40px;width:380px;box-shadow:0 20px 60px rgba(0,0,0,.15)}
.login-card h1{font-size:22px;text-align:center;margin-bottom:6px}
.login-card .sub{font-size:13px;color:var(--sub);text-align:center;margin-bottom:28px}

.app-layout{display:flex;min-height:100vh}
.sidebar{width:220px;flex:none;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column}
.sidebar .logo{padding:20px 18px;font-size:16px;font-weight:700;color:var(--primary);border-bottom:1px solid var(--line)}
.sidebar .nav{flex:1;padding:12px 10px;overflow-y:auto}
.sidebar .nav-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:8px;cursor:pointer;color:var(--sub);font-size:14px;margin-bottom:2px;transition:.15s}
.sidebar .nav-item:hover{background:var(--primary-light);color:var(--ink)}
.sidebar .nav-item.active{background:var(--primary);color:#fff;font-weight:600}
.sidebar .nav-item .icon{width:20px;text-align:center}
.sidebar .user-box{padding:14px 18px;border-top:1px solid var(--line);font-size:13px}
.sidebar .user-box .name{font-weight:600;color:var(--ink)}
.sidebar .user-box .role{font-size:11px;color:var(--sub);margin-top:2px}
.sidebar .user-box .logout{color:var(--red);cursor:pointer;font-size:12px;margin-top:6px;display:inline-block}

.main{flex:1;overflow-y:auto;padding:24px 32px}
.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.page-header h2{font-size:20px}
.page-header .actions{display:flex;gap:10px}

/* form */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:var(--sub);margin-bottom:6px;font-weight:500}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;outline:none;transition:.15s
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-group textarea{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* button */
.btn{padding:8px 18px;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:.15s;font-family:inherit;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-danger{background:var(--red);color:#fff}
.btn-sm{padding:4px 12px;font-size:12px}
.btn-green{background:var(--green);color:#fff}

/* card */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:18px;box-shadow:var(--shadow)}
.card-title{font-size:15px;font-weight:600;margin-bottom:14px}

/* stat cards */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.stat-card .num{font-size:28px;font-weight:700;color:var(--primary)}
.stat-card .lab{font-size:13px;color:var(--sub);margin-top:4px}
.stat-card .platform-list{margin-top:10px;font-size:12px;color:var(--sub)}
.stat-card .platform-list span{margin-right:8px}

/* table */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{background:#f3f5f9;color:var(--sub);font-weight:600;text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}
tr:hover td{background:#fafbfc}

/* badges */
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge-purple{background:var(--primary-light);color:var(--primary)}
.badge-blue{background:#e8f6fd;color:var(--blue)}
.badge-green{background:#eafaf0;color:var(--green)}
.badge-warn{background:#fff6e9;color:var(--warn)}
.badge-red{background:#fde8e8;color:var(--red)}
.badge-gray{background:#f0f1f4;color:var(--sub)}

/* platform tags */
.ptag{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600}
.ptag-xhs{background:#ffe0e0;color:#c0392b}
.ptag-dy{background:#1f2329;color:#fff}
.ptag-sph{background:#e8f5e8;color:#1a7a3e}
.ptag-zhihu{background:#e3eaf5;color:#1a5db4}
.ptag-gzh{background:#e8f5e8;color:#1a7a3e}
.ptag-tt{background:#fff4e3;color:#c46a00}

/* modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:100;display:flex;align-items:center;justify-content:center}
.modal{background:#fff;border-radius:16px;padding:28px;width:520px;max-height:85vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.modal h3{font-size:17px;margin-bottom:18px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}

/* status flow */
.status-flow{display:flex;align-items:center;gap:6px;font-size:12px;margin:8px 0}
.status-step{padding:4px 10px;border-radius:6px;background:#f0f1f4;color:var(--sub)}
.status-step.active{background:var(--primary);color:#fff}
.status-arrow{color:var(--sub)}

/* tabs */
.tabs{display:flex;gap:4px;margin-bottom:16px;border-bottom:1px solid var(--line)}
.tab{padding:8px 16px;cursor:pointer;font-size:14px;color:var(--sub);border-bottom:2px solid transparent}
.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* content card */
.content-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:12px}
.content-card .ch{display:flex;justify-content:space-between;align-items:start;margin-bottom:8px}
.content-card .ct{font-size:15px;font-weight:600}
.content-card .cb{font-size:13px;color:var(--sub);margin-top:6px;white-space:pre-wrap;max-height:120px;overflow-y:auto;background:#f9fafb;padding:8px 10px;border-radius:6px}
.content-card .cm{display:flex;gap:12px;font-size:12px;color:var(--sub);margin-top:8px;align-items:center}
.content-card .actions{display:flex;gap:8px;margin-top:10px}

/* empty */
.empty{text-align:center;padding:40px;color:var(--sub);font-size:14px}

/* responsive */
@media(max-width:768px){
  .stat-grid{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr}
  .sidebar{width:60px}
  .sidebar .logo{font-size:0;padding:20px 0;text-align:center}
  .sidebar .logo::before{content:"⚡";font-size:18px}
  .sidebar .nav-item span:not(.icon){display:none}
  .sidebar .user-box{display:none}
  .main{padding:16px}
}