*{box-sizing:border-box}body{margin:0;background:#f4f6fa;color:#172033;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit}.sidebar{position:fixed;left:0;top:0;bottom:0;width:220px;background:#111827;color:#d1d5db;padding:22px 16px;display:flex;flex-direction:column}.side-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#fff;font-size:18px;margin-bottom:24px}.logo{width:38px;height:38px;border-radius:11px;background:#fff;color:#111827;display:grid;place-items:center;font-weight:800}.logo.big{width:54px;height:54px;margin:auto;font-size:20px;background:#111827;color:#fff}.sidebar nav{display:grid;gap:6px}.sidebar nav a{padding:11px 13px;text-decoration:none;border-radius:9px}.sidebar nav a:hover,.sidebar nav a.active{background:#263244;color:#fff}.side-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;border-top:1px solid #2d3748;padding-top:15px}.side-foot a{font-size:13px}.main{margin-left:220px;padding:30px;max-width:1500px}.main header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.main h1{margin:0;font-size:26px}.main header p{margin:5px 0 0;color:#7a8494}.status{font-size:13px;padding:8px 12px;border-radius:999px}.status.online{background:#dcfce7;color:#166534}.status.offline{background:#fee2e2;color:#991b1b}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:18px}.stats>div,.card{background:#fff;border:1px solid #e8ebf0;border-radius:16px;box-shadow:0 3px 14px rgba(17,24,39,.04)}.stats>div{padding:22px}.stats b{display:block;font-size:30px;margin-bottom:4px}.stats span{color:#768195}.card{padding:20px;margin-bottom:18px}.card-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.card-title h2{margin:0;font-size:18px}.card-title a{font-size:13px;color:#2563eb}.add-form{display:grid;grid-template-columns:1.5fr .8fr 1.5fr 1.1fr auto;gap:12px;align-items:end}.add-form label,.settings label,.form-grid label,.login-card label{display:grid;gap:7px;font-size:13px;color:#5e6878}.add-form input,.add-form select,input,select,textarea{width:100%;border:1px solid #d8dde6;border-radius:9px;background:#fff;padding:10px 11px;font:inherit;color:#172033;outline:none}.add-form input:focus,input:focus,select:focus,textarea:focus{border-color:#8aa4d6;box-shadow:0 0 0 3px rgba(37,99,235,.08)}.btn{border:0;border-radius:9px;padding:10px 14px;background:#e9edf3;color:#172033;font-weight:600;cursor:pointer}.btn.primary{background:#111827;color:#fff}.btn.danger{background:#b91c1c;color:#fff}.btn.full{width:100%;margin-top:8px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;white-space:nowrap}th,td{text-align:left;border-bottom:1px solid #edf0f4;padding:11px 10px;font-size:13px}th{color:#667085;font-weight:600;background:#fafbfc}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.pill{display:inline-block;border-radius:999px;background:#eef2f7;padding:4px 8px}.pill.green{background:#dcfce7;color:#166534}.pill.red{background:#fee2e2;color:#991b1b}.pill.gray{background:#eef2f7;color:#667085}.inline{display:inline-flex;gap:10px}.linkbtn{border:0;background:none;padding:0;color:#2563eb;cursor:pointer}.linkbtn.red{color:#b91c1c}.search{display:flex;gap:8px}.search input{width:240px}.right{text-align:right;margin-top:15px}.settings form{max-width:720px;display:grid;gap:16px}.switch-row{display:flex!important;align-items:center;justify-content:space-between;border-bottom:1px solid #edf0f4;padding:10px 0}.switch-row span{display:grid;gap:3px}.switch-row small{color:#8892a2}.switch-row input{width:20px;height:20px}.api-box{margin-top:24px;padding:16px;background:#f7f8fa;border-radius:12px}.api-box pre{background:#111827;color:#e5e7eb;padding:12px;border-radius:9px;overflow:auto}.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px}.alert.success{background:#ecfdf5;color:#065f46}.alert.danger{background:#fef2f2;color:#991b1b}.install-bg,.login-bg{min-height:100vh;display:grid;place-items:center;padding:25px;background:linear-gradient(135deg,#eef2ff,#f8fafc)}.install-card,.login-card{width:min(720px,100%);background:#fff;border-radius:20px;padding:28px;box-shadow:0 20px 60px rgba(17,24,39,.1)}.login-card{width:min(430px,100%);text-align:center}.login-card form{text-align:left;display:grid;gap:14px;margin-top:20px}.brand{display:flex;gap:14px;align-items:center}.brand h1,.login-card h1{margin:0;font-size:24px}.brand p,.login-card p{color:#7b8493}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}.form-grid h3{grid-column:1/-1;margin:10px 0 0}.span2{grid-column:1/-1}.hint{font-size:13px;color:#7a8494;margin-bottom:0}@media(max-width:900px){.sidebar{position:static;width:auto}.main{margin-left:0;padding:18px}.stats{grid-template-columns:1fr 1fr}.add-form{grid-template-columns:1fr 1fr}.add-form .btn{grid-column:1/-1}.side-foot{display:none}}@media(max-width:560px){.stats{grid-template-columns:1fr}.add-form,.form-grid{grid-template-columns:1fr}.span2,.form-grid h3{grid-column:auto}.main header{align-items:flex-start;gap:12px;flex-direction:column}.card{padding:14px}.search input{width:150px}}

/* Mobile drawer enhancement: presentation only, existing functions/links unchanged */
.drawer-mask,.drawer-close,.drawer-open,.drawer-user{display:none}.nav-icon{display:none}.header-title{display:flex;align-items:center;gap:12px}
@media(max-width:900px){
  body{overflow-x:hidden}
  .main{margin-left:0;padding:18px}
  .main header{position:relative}
  .header-title{display:flex;align-items:flex-start;gap:12px;min-width:0}
  .drawer-open{display:inline-flex;flex:0 0 auto;width:40px;height:40px;border:1px solid #e3e8ef;background:#fff;border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;box-shadow:0 2px 8px rgba(15,23,42,.04);cursor:pointer}
  .drawer-open span{display:block;width:17px;height:2px;border-radius:2px;background:#667085}
  .drawer-mask{display:block;position:fixed;inset:0;background:rgba(31,41,55,.46);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:998}
  .sidebar{position:fixed;left:0;top:0;bottom:0;width:46vw;min-width:178px;max-width:218px;background:#fff;color:#263244;padding:0;display:flex;flex-direction:column;z-index:999;transform:translateX(-102%);transition:transform .24s ease;box-shadow:12px 0 30px rgba(15,23,42,.08);overflow-y:auto;-webkit-overflow-scrolling:touch}
  body.drawer-open{overflow:hidden}
  body.drawer-open .drawer-mask{opacity:1;visibility:visible}
  body.drawer-open .sidebar{transform:translateX(0)}
  .drawer-head{padding:18px 14px 15px;border-bottom:1px solid #edf0f4}
  .drawer-brand-row{display:flex;align-items:center;justify-content:space-between;gap:8px}
  .side-brand{min-width:0;flex:1;margin:0;gap:9px;color:#202938;font-size:15px;font-weight:700}
  .side-brand .logo{width:35px;height:35px;border-radius:10px;background:#f1f5f9;color:#172033;border:1px solid #e2e8f0;flex:0 0 auto}
  .side-brand span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .drawer-close{display:grid;place-items:center;flex:0 0 auto;width:28px;height:28px;border:1px solid #e4e8ee;border-radius:50%;background:#fff;color:#7a8494;font-size:18px;line-height:1;padding:0;cursor:pointer}
  .drawer-user{display:flex;align-items:center;gap:10px;margin-top:15px}
  .drawer-avatar{width:38px;height:38px;border-radius:50%;background:#eef4ff;color:#5b7cfa;display:grid;place-items:center;font-size:16px;font-weight:700}
  .drawer-user-meta{display:grid;min-width:0;gap:2px}
  .drawer-user-meta strong{font-size:14px;color:#202938;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .drawer-user-meta span{font-size:11px;color:#98a1b2}
  .sidebar nav{display:grid;gap:4px;padding:12px 8px}
  .sidebar nav a{display:flex;align-items:center;gap:10px;min-height:44px;padding:10px 10px;border-radius:10px;text-decoration:none;color:#334155;font-size:14px;font-weight:500}
  .sidebar nav a:hover{background:#f7f9fc;color:#334155}
  .sidebar nav a.active{background:#edf3ff;color:#4f7cff;box-shadow:inset 3px 0 0 #5b8cff}
  .nav-icon{display:grid;place-items:center;width:19px;height:19px;flex:0 0 19px;color:#7d8796}
  .nav-icon svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .sidebar nav a:first-child .nav-icon svg path{fill:none}
  .sidebar nav a.active .nav-icon{color:#5b8cff}
  .side-foot{margin-top:auto;display:flex;border-top:1px solid #edf0f4;padding:14px 14px 18px;justify-content:space-between;gap:8px;color:#8b95a5}
  .side-foot small{max-width:92px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .side-foot a{font-size:12px;color:#667085;text-decoration:none}
  .stats{grid-template-columns:1fr 1fr}
  .add-form{grid-template-columns:1fr 1fr}
  .add-form .btn{grid-column:1/-1}
}
@media(max-width:560px){
  .sidebar{width:46vw;min-width:176px;max-width:205px}
  .main{padding:16px}
  .main header{align-items:flex-start;gap:12px;flex-direction:column}
  .header-title{width:100%}
  .header-title h1{font-size:22px}
  .drawer-open{width:38px;height:38px;border-radius:11px}
  .card{padding:14px}
  .search input{width:150px}
}


/* Admin mobile v6 fallback */
@media(max-width:900px){
  html,body{max-width:100%;overflow-x:hidden}
  input,select,textarea,button{max-width:100%}
  .main,.card{min-width:0;max-width:100%}
  .table-wrap.desktop-only-table,.blacklist-table-desktop,.agent-account-table{display:none!important}
}