:root{
  --bg:#f5f7fb; --bg-soft:#ffffff; --card:#ffffff; --card-hover:#f9fafb;
  --border:#d8dee9; --border-soft:#e7ebf2;
  --text:#172033; --text-soft:#4d5b73; --text-mute:#7b8798;
  --primary:#2563eb; --primary-hover:#1d4ed8; --primary-soft:rgba(37,99,235,.10);
  --ok:#059669; --warn:#d97706; --danger:#dc2626;
  --radius:8px; --shadow:0 14px 36px rgba(23,32,51,.08);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.icon{display:inline-block;width:1em;height:1em;stroke:currentColor;flex-shrink:0;vertical-align:-.14em}
.inline-icon{width:14px;height:14px;margin-right:4px}
.btn .icon{width:15px;height:15px}
.muted{color:var(--text-mute)}
.small{font-size:12.5px}
.center{text-align:center}

/* shell */
.admin-shell{display:flex;min-height:100vh}
.admin-side{width:224px;background:var(--bg-soft);border-right:1px solid var(--border-soft);padding:18px 12px;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;overflow-y:auto}
.side-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:15px;padding:8px 10px 18px;border-bottom:1px solid var(--border-soft);margin-bottom:12px}
.side-brand .brand-logo{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:#172033;color:#fff}
.side-brand .brand-logo .icon{width:18px;height:18px}
.side-nav{display:flex;flex-direction:column;gap:3px;flex:1}
.side-nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;color:var(--text-soft);font-size:14.5px;transition:.16s;position:relative}
.side-nav a span{display:grid;place-items:center;width:20px;text-align:center}
.side-nav a span .icon{width:17px;height:17px}
.side-nav a:hover{background:var(--primary-soft);color:var(--text)}
.side-nav a.active{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.18)}
.nav-badge{margin-left:auto;background:var(--danger);color:#fff;font-size:11px;padding:1px 7px;border-radius:999px;font-style:normal;font-weight:700}
.side-foot{border-top:1px solid var(--border-soft);padding-top:12px;display:flex;flex-direction:column;gap:6px}
.side-foot a,.side-logout button{width:100%;padding:8px 12px;border-radius:8px;color:var(--text-mute);font-size:13.5px;background:transparent;border:0;text-align:left;font-family:inherit;cursor:pointer}
.side-foot a:hover,.side-logout button:hover{color:var(--text);background:var(--primary-soft)}
.side-logout{margin:0}
.admin-main{margin-left:224px;flex:1;display:flex;flex-direction:column;min-width:0}
.admin-top{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;border-bottom:1px solid var(--border-soft);background:rgba(255,255,255,.86);backdrop-filter:blur(12px);position:sticky;top:0;z-index:20}
.admin-top h1{font-size:19px;margin:0;font-weight:700}
.top-user{display:inline-flex;align-items:center;gap:4px;font-size:14px;color:var(--text-soft);background:var(--card);padding:6px 14px;border-radius:999px;border:1px solid var(--border-soft)}
.admin-content{padding:24px 28px 60px;flex:1}

/* stat cards */
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:16px}
.stat-card-lg{background:var(--card);border:1px solid var(--border-soft);border-radius:var(--radius);padding:22px;position:relative;overflow:hidden}
.stat-card-lg::after{content:"";position:absolute;left:0;top:0;bottom:0;width:4px}
.accent-blue::after{background:var(--primary)}
.accent-green::after{background:var(--ok)}
.accent-amber::after{background:var(--warn)}
.accent-purple::after{background:#8a6bff}
.accent-red::after{background:var(--danger)}
.accent-gray::after{background:var(--text-mute)}
.sc-val{font-size:30px;font-weight:800;line-height:1.2}
.sc-label{color:var(--text-mute);font-size:13.5px;margin-top:4px}
.mini-stats{display:flex;flex-wrap:wrap;gap:10px 22px;background:var(--card);border:1px solid var(--border-soft);border-radius:12px;padding:14px 20px;margin-bottom:18px;font-size:13.5px;color:var(--text-soft)}
.mini-stats b{color:var(--text)}
.notice-bar{background:#fffbeb;border:1px solid #fde68a;color:#92400e;border-radius:8px;padding:13px 18px;margin-bottom:18px;font-size:14px}
.notice-bar a{color:#1d4ed8;font-weight:700;text-decoration:underline}

/* grid */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.span-2{grid-column:span 2}
@media(max-width:980px){.grid-2{grid-template-columns:1fr}.span-2{grid-column:auto}.stat-cards{grid-template-columns:repeat(2,1fr)}}
.panel{background:var(--card);border:1px solid var(--border-soft);border-radius:var(--radius);padding:20px;margin-bottom:18px;min-width:0}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.panel-head h2{font-size:16px;margin:0;font-weight:700}
.panel-head a{color:var(--primary);font-size:13.5px}

/* settings */
.settings-page{max-width:920px}
.settings-hero{display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--border-soft);border-radius:var(--radius);padding:22px 24px;margin-bottom:18px}
.settings-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:12px;background:var(--primary-soft);color:var(--primary);flex-shrink:0}
.settings-icon .icon{width:24px;height:24px}
.settings-hero h2{font-size:18px;margin:0 0 4px}
.settings-hero p{margin:0;color:var(--text-soft);font-size:13.5px;max-width:620px}
.settings-grid{display:grid;grid-template-columns:260px minmax(0,520px);gap:18px;align-items:start}
.security-note{background:#f8fafc;border:1px solid var(--border-soft);border-radius:var(--radius);padding:18px}
.security-note h3{font-size:15px;margin:0 0 12px}
.security-note ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;color:var(--text-soft);font-size:13.5px}
.security-note li{display:flex;align-items:center;gap:6px}
.security-note .icon{color:var(--ok);width:15px;height:15px}
.password-panel{margin:0}
.clean-form{background:transparent;border:0;padding:0;gap:16px}
.clean-form .field input{height:44px}
.form-actions{display:flex;justify-content:flex-start;padding-top:2px}

/* chart */
.chart{display:flex;align-items:flex-end;gap:6px;height:190px;padding-top:10px}
.chart-col{flex:1;display:flex;flex-direction:column;align-items:center;height:100%;justify-content:flex-end;gap:6px}
.chart-bar{width:100%;max-width:38px;background:var(--primary);border-radius:6px 6px 0 0;position:relative;transition:.2s;min-height:3px}
.chart-bar:hover{filter:brightness(1.2)}
.chart-bar span{position:absolute;top:-20px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--text-soft)}
.chart-x{font-size:10.5px;color:var(--text-mute);white-space:nowrap;transform:rotate(-45deg);transform-origin:center}
@media(max-width:600px){.chart-x{display:none}}

/* bar list */
.bar-list{display:flex;flex-direction:column;gap:12px}
.bar-row{display:flex;align-items:center;gap:12px;font-size:13.5px}
.bar-label{width:78px;color:var(--text-soft);flex-shrink:0}
.bar-track{flex:1;height:9px;background:#eef2f7;border-radius:99px;overflow:hidden}
.bar-fill{height:100%;background:var(--primary);border-radius:99px;min-width:3px}
.bar-val{width:38px;text-align:right;color:var(--text-soft)}

/* table */
.dtable{width:100%;border-collapse:collapse;font-size:14px}
.dtable th{text-align:left;padding:10px 12px;color:var(--text-mute);font-size:12.5px;font-weight:600;border-bottom:1px solid var(--border-soft);white-space:nowrap}
.dtable td{padding:13px 12px;border-bottom:1px solid var(--border-soft);vertical-align:top}
.dtable tr:last-child td{border-bottom:none}
.dtable tbody tr:hover{background:#f8fafc}
.cell-site{max-width:340px}
.cell-site-head{display:flex;gap:11px;align-items:flex-start}
.cell-site-head img{width:38px;height:38px;border-radius:8px;object-fit:cover;border:1px solid var(--border-soft);background:#f1f5f9;flex-shrink:0}
.cell-desc{margin:9px 0 6px;color:var(--text-soft);font-size:13px;line-height:1.5}
.ext-link{color:var(--primary);font-size:12.5px;word-break:break-all}
.rank{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:7px;background:#eef2f7;font-size:12px;font-weight:700;color:var(--text-soft)}
.rank-1{background:#fff7ed;color:#9a3412}
.rank-2{background:#f1f5f9;color:#334155}
.rank-3{background:#fef3c7;color:#92400e}
.user-cell{display:inline-flex;align-items:center;gap:8px}
.pill{display:inline-block;padding:1px 9px;border-radius:7px;font-size:12px;background:#f8fafc;border:1px solid var(--border-soft);color:var(--text-soft);margin-right:3px}
.pill-ok{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
.pill-warn{background:#fffbeb;color:#92400e;border-color:#fde68a}

/* row actions */
.row-actions{display:flex;flex-wrap:wrap;gap:6px}
.inline-form{display:inline-flex;flex-wrap:wrap;gap:6px;margin:0}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:9px;padding:8px 15px;font-size:13.5px;font-weight:600;cursor:pointer;transition:.16s;background:none;color:var(--text);font-family:inherit;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.18)}
.btn-primary:hover{background:var(--primary-hover)}
.btn-ghost{border-color:var(--border);color:var(--text-soft)}
.btn-ghost:hover{border-color:var(--primary);color:var(--text);background:var(--primary-soft)}
.btn-danger{background:rgba(255,92,114,.16);color:var(--danger);border-color:rgba(255,92,114,.3)}
.btn-danger:hover{background:rgba(255,92,114,.26)}
.btn-sm{padding:5px 10px;font-size:12.5px;border-radius:7px}
.btn-lg{padding:12px 24px;font-size:15px}
.btn-block{width:100%}
.bulk-actions{display:flex;gap:8px}

/* filter bar */
.filter-bar{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.filter-bar input,.filter-bar select{padding:9px 13px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:14px;outline:none;font-family:inherit}
.filter-bar input:focus,.filter-bar select:focus{border-color:var(--primary)}
.filter-input{flex:1;min-width:180px}

/* forms */
.stack-form{display:flex;flex-direction:column;gap:14px}
.field{margin-bottom:0}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--text-soft)}
.field input[type=text],.field input[type=email],.field input[type=password],.field input[type=number],.field input[type=url],.field select,.field textarea{width:100%;padding:11px 14px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:14.5px;outline:none;font-family:inherit}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}
.field textarea{resize:vertical;min-height:84px}
.err-list{margin:0;padding-left:20px}

/* badges / dots */
.badge{display:inline-block;padding:2px 10px;border-radius:7px;font-size:12.5px;font-weight:600;background:#f8fafc;border:1px solid var(--border-soft);color:var(--text-soft)}
.badge-ok{background:#ecfdf5;border-color:#a7f3d0;color:#047857}
.badge-warn{background:#fffbeb;border-color:#fde68a;color:#92400e}
.badge-danger{background:#fef2f2;border-color:#fecaca;color:#b91c1c}
.badge-muted{background:#f8fafc;color:var(--text-mute)}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block}
.dot-ok{background:var(--ok);box-shadow:0 0 8px rgba(62,207,142,.7)}
.dot-bad{background:var(--danger);box-shadow:0 0 8px rgba(255,92,114,.7)}
.dot-unknown{background:var(--text-mute)}
.tag-reco{font-size:11px;padding:1px 7px;border-radius:6px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-weight:700}
.tag-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.tag{font-size:12px;padding:2px 9px;border-radius:7px;background:var(--primary-soft);color:#1d4ed8}

/* alerts */
.alert{padding:13px 18px;border-radius:12px;margin-bottom:16px;font-size:14px;border:1px solid}
.alert-success{background:#ecfdf5;border-color:#a7f3d0;color:#047857}
.alert-danger{background:#fef2f2;border-color:#fecaca;color:#b91c1c}
.alert-warn{background:#fffbeb;border-color:#fde68a;color:#92400e}
.alert-info{background:var(--primary-soft);border-color:#bfdbfe;color:#1d4ed8}

/* empty */
.empty-state{text-align:center;padding:56px 20px;color:var(--text-soft)}
.empty-icon{display:grid;place-items:center;width:52px;height:52px;margin:0 auto 12px;border-radius:12px;background:#eef2f7;color:var(--primary)}
.empty-icon .icon{width:26px;height:26px}
.empty-state p{margin:0}

/* pagination */
.pagination{display:flex;justify-content:center;gap:6px;margin-top:22px;flex-wrap:wrap}
.page-item{padding:7px 13px;border-radius:8px;border:1px solid var(--border);color:var(--text-soft);font-size:13.5px}
.page-item:hover{border-color:var(--primary);color:var(--text)}
.page-item.active{background:var(--primary);border-color:var(--primary);color:#fff}
.page-item.disabled{opacity:.4;pointer-events:none}
.page-dots{color:var(--text-mute);padding:7px 4px}

/* modal */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.42);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:26px;width:100%;max-width:420px;box-shadow:var(--shadow)}
.modal-lg{max-width:560px}
.modal h3{margin:0 0 8px;font-size:18px}
.modal textarea,.modal input,.modal select{width:100%;padding:11px 14px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:14.5px;outline:none;font-family:inherit;margin-top:6px}
.modal textarea:focus,.modal input:focus,.modal select:focus{border-color:var(--primary)}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}
.modal .field{margin-bottom:14px}
.modal .field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--text-soft)}

/* login */
.admin-login-body{display:grid;place-items:center;min-height:100vh;background:linear-gradient(180deg,#f8fafc 0%,#eef2f7 100%)}
.login-box{width:100%;max-width:380px;background:var(--card);border:1px solid var(--border-soft);border-radius:10px;padding:38px 32px;box-shadow:var(--shadow);text-align:center}
.login-logo{display:grid;place-items:center;width:48px;height:48px;margin:0 auto 14px;border-radius:10px;background:#172033;color:#fff}
.login-logo .icon{width:25px;height:25px}
.login-box h1{font-size:20px;margin:0 0 4px}
.login-sub{color:var(--text-mute);font-size:13.5px;margin:0 0 24px}
.login-box form{text-align:left}
.login-box .field{margin-bottom:16px}
.login-box .field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--text-soft)}
.login-box .field input{width:100%;padding:11px 14px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:14.5px;outline:none;font-family:inherit}
.login-box .field input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}
.login-foot{margin:18px 0 0;font-size:13.5px}
.login-foot a{color:var(--text-soft)}

.code-block{display:inline-block;background:#f8fafc;border:1px solid var(--border-soft);border-radius:8px;padding:7px 12px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;color:#1d4ed8;word-break:break-all}

@media(max-width:780px){
  .admin-side{width:60px;padding:14px 6px}
  .side-brand span:not(.brand-logo){display:none}
  .side-nav a{justify-content:center;padding:11px 0}
  .side-nav a:not(.active){font-size:0}
  .side-nav a span{font-size:18px}
  .nav-badge{position:absolute;top:2px;right:2px;margin:0}
  .side-foot a,.side-logout button{font-size:0;text-align:center}
  .admin-main{margin-left:60px}
  .admin-content{padding:18px 14px 50px}
}

@media(prefers-color-scheme:dark){
  :root{
    color-scheme:dark;
    --bg:#090d18; --bg-soft:#101827; --card:#121b2f; --card-hover:#172238;
    --border:#2b3650; --border-soft:#202a42;
    --text:#edf3ff; --text-soft:#bac6dc; --text-mute:#8592aa;
    --primary:#6d8cff; --primary-hover:#89a3ff; --primary-soft:rgba(109,140,255,.16);
    --ok:#34d399; --warn:#fbbf24; --danger:#fb7185;
    --shadow:0 18px 46px rgba(0,0,0,.34);
  }
  body,.admin-login-body{color-scheme:dark;background:#090d18;color:var(--text)}
  .admin-side,.admin-top{background:rgba(16,24,39,.92);border-color:var(--border-soft)}
  .side-brand .brand-logo,.login-logo{background:#1d2942;color:#eaf0ff}
  .panel,.stat-card-lg,.mini-stats,.login-box,.modal,.top-user,.security-note{background:var(--card);border-color:var(--border-soft)}
  .dtable tbody tr:hover,.pill,.badge,.rank,.empty-icon,.bar-track,.code-block{background:#0f1728;border-color:var(--border-soft);color:var(--text-soft)}
  .cell-site-head img{background:#0b1220;border-color:var(--border)}
  .filter-bar input,.filter-bar select,.field input[type=text],.field input[type=email],.field input[type=password],.field input[type=number],.field input[type=url],.field select,.field textarea,.modal textarea,.modal input,.modal select,.login-box .field input{background:#0f1728;color:var(--text);border-color:var(--border)}
  .filter-bar input::placeholder,.field input::placeholder,.field textarea::placeholder,.modal input::placeholder,.modal textarea::placeholder{color:#6f7d96}
  .rank-1,.tag-reco{background:rgba(251,191,36,.14);border-color:rgba(251,191,36,.34);color:#fde68a}
  .rank-2{background:#131d30;color:var(--text-soft)}
  .rank-3{background:rgba(251,191,36,.18);color:#fde68a}
  .pill-ok,.badge-ok,.alert-success{background:rgba(52,211,153,.12);border-color:rgba(52,211,153,.32);color:#86efac}
  .pill-warn,.badge-warn,.alert-warn{background:rgba(251,191,36,.13);border-color:rgba(251,191,36,.32);color:#fde68a}
  .badge-danger,.alert-danger{background:rgba(251,113,133,.12);border-color:rgba(251,113,133,.32);color:#fda4af}
  .alert-info{background:var(--primary-soft);border-color:rgba(109,140,255,.34);color:#c9d6ff}
  .tag{color:#c9d6ff;background:var(--primary-soft)}
  .modal-mask{background:rgba(0,0,0,.55)}
}