/* 网站后台 · 视觉系统 */
:root{--blue:#1e56a0;--blue-dark:#174178;--blue-soft:#eaf1fb;--line:#e3e9f2;--ink:#1c2a3e;--body:#3d4b60;--muted:#6b7a90;--bg:#f5f7fb;--side:#122b4a;--green:#1a8a4c;--red:#c0392b;--radius:10px}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--body);font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:14.5px;line-height:1.65}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-dark)}
h1,h2,h3{color:var(--ink);margin:0 0 .5em;line-height:1.35}
h1{font-size:20px}h2{font-size:21px}h3{font-size:16px}
p{margin:0 0 1em}
code{background:#eef2f8;border-radius:4px;padding:2px 6px;font-size:12.5px;color:#2f5c96;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:7px;padding:9px 18px;font-size:14px;font-weight:600;line-height:1.4;cursor:pointer;background:#fff;color:var(--body);transition:.18s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-primary:hover{background:var(--blue-dark);color:#fff}
.btn-outline{border-color:var(--blue);color:var(--blue);background:#fff}
.btn-outline:hover{background:var(--blue-soft);color:var(--blue)}
.btn-ghost{background:#eef2f8;color:var(--body);border-color:transparent}
.btn-ghost:hover{background:#e2e8f2;color:var(--ink)}
.btn-danger{background:#fff;border-color:#f0c9c4;color:var(--red)}
.btn-danger:hover{background:#fdeeed;color:var(--red)}
.btn-lg{padding:12px 26px;font-size:15px}
.btn-sm{padding:7px 14px;font-size:13px}
.btn-xs{padding:5px 11px;font-size:12.5px}
.btn-block{width:100%}
.btn-right{margin-left:auto}

/* ---------- 框架 ---------- */
.admin-shell{display:flex;min-height:100vh}
.sidebar{width:238px;flex:none;background:var(--side);color:rgba(255,255,255,.78);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto}
.side-brand{display:flex;align-items:center;gap:11px;padding:22px 20px;border-bottom:1px solid rgba(255,255,255,.1);color:#fff}
.side-brand:hover{color:#fff}
.side-brand-icon{display:grid;place-items:center}
.side-brand span{display:flex;flex-direction:column;line-height:1.3}
.side-brand strong{font-size:16px}
.side-brand small{font-size:11px;color:rgba(255,255,255,.6)}
.side-nav{padding:16px 12px;display:flex;flex-direction:column;gap:2px;flex:1}
.side-group{font-size:11px;letter-spacing:1.5px;color:rgba(255,255,255,.42);padding:16px 12px 6px;text-transform:uppercase}
.side-nav a{color:rgba(255,255,255,.8);padding:10px 13px;border-radius:7px;font-size:14px;display:flex;justify-content:space-between;align-items:center}
.side-nav a:hover{background:rgba(255,255,255,.09);color:#fff}
.side-nav a.active{background:var(--blue);color:#fff;font-weight:600}
.side-nav em{background:var(--red);color:#fff;font-style:normal;font-size:11px;min-width:19px;height:19px;border-radius:10px;display:grid;place-items:center;padding:0 5px}
.side-foot{padding:16px 20px 22px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;gap:10px;font-size:13px}
.side-foot a{color:rgba(255,255,255,.72)}
.side-foot a:hover{color:var(--accent,#f7d305)}
.admin-main{flex:1;min-width:0;display:flex;flex-direction:column}
.admin-topbar{background:#fff;border-bottom:1px solid var(--line);min-height:64px;display:flex;align-items:center;gap:14px;padding:0 30px;position:sticky;top:0;z-index:20}
.admin-topbar h1{margin:0;font-size:18px}
.topbar-user{margin-left:auto;display:flex;align-items:center;gap:18px;font-size:13px;color:var(--muted)}
.topbar-user span{background:var(--blue-soft);color:var(--blue);padding:5px 12px;border-radius:100px;font-weight:600}
.side-toggle{display:none;background:transparent;border:0;font-size:20px;color:var(--ink)}
.admin-warning{background:#fff5d9;border-bottom:1px solid #f0dfa6;color:#7a5a10;padding:10px 30px;font-size:13.5px}
.admin-warning a{font-weight:700;text-decoration:underline}
.admin-content{padding:28px 30px 60px;max-width:1320px;width:100%}

/* ---------- 通用组件 ---------- */
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 2px 10px rgba(23,65,120,.04);margin-bottom:22px;overflow:hidden}
.panel-head{padding:16px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.panel-head h3{margin:0}
.panel-head a{font-size:13px}
.panel-empty{padding:44px 22px;text-align:center;color:var(--muted)}
.form-alert{border-radius:8px;padding:12px 16px;margin-bottom:18px;font-size:14px}
.form-alert.success{background:#eaf7ef;border:1px solid #bce5cb;color:#1d6b3b}
.form-alert.error{background:#fdeeee;border:1px solid #f3c4c4;color:#a53232}
.form-alert a{font-weight:700;text-decoration:underline}
.form-alert p{margin:4px 0 0}
.tip-card{background:var(--blue-soft);border:1px solid #d3e0f3;border-radius:8px;padding:14px 18px;font-size:13.5px;color:var(--body)}
.tip-card strong{color:var(--blue);margin-right:8px}
.badge{display:inline-block;padding:3px 9px;border-radius:100px;font-size:11.5px;font-weight:600}
.badge.green{background:#e4f6eb;color:var(--green)}
.badge.gray{background:#eef1f5;color:var(--muted)}
.muted{color:var(--muted)}
.nowrap{white-space:nowrap;font-size:13px;color:var(--muted)}

/* ---------- 仪表盘 ---------- */
.welcome{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}
.welcome h2{font-size:23px;margin-bottom:4px}
.welcome p{color:var(--muted);margin:0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;align-items:center;gap:16px;color:var(--body);transition:.2s}
.stat-card:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(23,65,120,.1);color:var(--body)}
.stat-icon{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;font-size:21px;flex:none}
.stat-icon.blue{background:#e8f0fc;color:var(--blue)}
.stat-icon.cyan{background:#e5f5f7;color:#138a99}
.stat-icon.violet{background:#f0ebfb;color:#7154b8}
.stat-icon.amber{background:#fdf3dd;color:#b48412}
.stat-card div{display:flex;flex-direction:column}
.stat-card strong{font-size:26px;color:var(--ink);line-height:1.2}
.stat-card span{font-size:12.5px;color:var(--muted)}
.stat-card em{color:var(--red);font-style:normal}
.todo-card{background:#fff8e8;border:1px solid #f0dca8;border-radius:10px;padding:18px 22px;margin-bottom:22px}
.todo-card h3{margin-bottom:6px;color:#8a6410}
.todo-card p{font-size:13.5px;color:#7a6337;margin-bottom:12px}
.dash-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:20px}
.quick-links{display:flex;flex-direction:column;padding:8px 0}
.quick-links a{display:flex;align-items:center;gap:14px;padding:11px 22px;color:var(--body);border-bottom:1px solid #f1f4f9}
.quick-links a:last-child{border-bottom:0}
.quick-links a:hover{background:var(--bg);color:var(--blue)}
.quick-links a>span{width:32px;height:32px;border-radius:8px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-size:17px;flex:none}
.quick-links div{display:flex;flex-direction:column}
.quick-links strong{color:var(--ink);font-size:14px}
.quick-links small{color:var(--muted);font-size:12px}

/* ---------- 表格 ---------- */
.list-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:20px}
.list-head h2{margin-bottom:4px}
.list-head p{color:var(--muted);font-size:13.5px;margin:0}
.head-btns{display:flex;gap:8px;flex-wrap:wrap}
.admin-table{width:100%;border-collapse:collapse;font-size:14px}
.admin-table th{background:#fafbfd;text-align:left;padding:12px 16px;font-size:12.5px;font-weight:600;color:var(--muted);border-bottom:1px solid var(--line);white-space:nowrap}
.admin-table td{padding:12px 16px;border-bottom:1px solid #f0f3f8;vertical-align:middle}
.admin-table tbody tr:last-child td{border-bottom:0}
.admin-table tbody tr:hover{background:#fbfcfe}
.admin-table .col-actions{white-space:nowrap;text-align:right}
.table-panel{overflow-x:auto}
.cell-text{display:inline-block;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:middle}
.table-thumb{width:54px;height:44px;object-fit:contain;background:#f6f8fc;border:1px solid var(--line);border-radius:6px;padding:3px}
.inline-form{display:inline-block;margin-left:6px}
.switch{width:40px;height:22px;border-radius:22px;background:#cfd7e3;border:0;position:relative;padding:0;transition:.2s;vertical-align:middle}
.switch span{position:absolute;left:3px;top:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch.on{background:var(--blue)}
.switch.on span{left:21px}
.switch.busy{opacity:.5;pointer-events:none}

/* ---------- 表单 ---------- */
.edit-form{max-width:980px}
.form-panel{padding-bottom:6px}
.form-fields{display:grid;grid-template-columns:1fr 1fr;gap:18px 22px;padding:22px}
.field{min-width:0}
.field-wide{grid-column:1 / -1}
.field>label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:7px}
.field em{color:#d13b3b;font-style:normal}
.field input[type=text],.field input[type=number],.field input[type=date],.field input[type=password],.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:7px;padding:10px 12px;font-size:14px;color:var(--ink);background:#fff;outline:0;font-family:inherit;transition:.18s}
.field textarea{resize:vertical;line-height:1.7;min-height:76px}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,86,160,.1)}
.field .input-narrow{max-width:220px}
.field-hint{font-size:12px;color:var(--muted);margin:6px 0 0}
.field-key{display:inline-block;margin-top:6px;background:transparent;color:#9aa8bb;padding:0;font-size:11.5px}
.html-editor{font-family:ui-monospace,SFMono-Regular,Menlo,monospace!important;font-size:13px!important;line-height:1.75!important}
.editor-toolbar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.editor-toolbar button{border:1px solid var(--line);background:#f8fafd;color:var(--body);border-radius:6px;padding:5px 11px;font-size:12.5px}
.editor-toolbar button:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft)}
.check-line{display:flex;align-items:center;gap:9px;font-weight:400!important;cursor:pointer}
.check-line input{width:17px;height:17px;accent-color:var(--blue)}
.check-line span{font-size:14px;color:var(--body)}
.image-field{display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap}
.image-preview{width:130px;height:100px;border:1px dashed var(--line);border-radius:8px;background:#fafbfd;display:grid;place-items:center;overflow:hidden;flex:none;color:var(--muted);font-size:12px;text-align:center;padding:6px}
.image-preview img{width:100%;height:100%;object-fit:contain}
.image-controls{flex:1;min-width:230px;display:flex;flex-direction:column;gap:8px}
.image-controls .btn{align-self:flex-start}
.image-controls .btn-ghost{margin-top:0}
.form-actions{display:flex;align-items:center;gap:12px;padding:8px 0 30px;flex-wrap:wrap}
.narrow-panel{max-width:560px}
.form-panel .form-actions{padding:0 22px 22px}

/* ---------- 详情 / 媒体 ---------- */
.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:22px}
.detail-grid div{display:flex;flex-direction:column;background:#fafbfd;border:1px solid var(--line);border-radius:8px;padding:12px 14px}
.detail-grid span{font-size:12px;color:var(--muted)}
.detail-grid strong{font-size:15px;color:var(--ink);margin-top:3px;word-break:break-all}
.detail-message{padding:0 22px 18px}
.detail-message h3{font-size:15px}
.detail-message div{background:#fafbfd;border:1px solid var(--line);border-radius:8px;padding:16px;line-height:1.9;white-space:normal;word-break:break-word}
.upload-panel{padding:22px}
.upload-drop{border:2px dashed #cdd9ea;border-radius:12px;background:#fafcfd;text-align:center;padding:34px 20px;cursor:pointer;transition:.2s}
.upload-drop:hover,.upload-drop.dragover{border-color:var(--blue);background:var(--blue-soft)}
.upload-icon{font-size:30px;color:var(--blue);margin-bottom:8px}
.upload-drop h3{margin-bottom:6px}
.upload-drop p{color:var(--muted);font-size:13px;margin-bottom:16px}
.upload-status{font-size:13.5px;color:var(--green);padding-top:12px}
.upload-status.error{color:var(--red)}
.media-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:20px}
.media-card{border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff}
.media-card img{width:100%;height:140px;object-fit:contain;background:#f6f8fc;padding:10px}
.media-meta{display:flex;justify-content:space-between;gap:8px;padding:9px 11px;border-top:1px solid var(--line);font-size:12px;color:var(--ink)}
.media-meta small{color:var(--muted);white-space:nowrap}
.media-actions{display:flex;justify-content:space-between;align-items:center;padding:8px 11px;background:#fafbfd}

/* ---------- 登录 ---------- */
.login-body{background:#eef3fa;min-height:100vh;display:grid;place-items:center;padding:24px}
.login-wrap{display:grid;grid-template-columns:1fr 1fr;width:min(900px,100%);background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 24px 70px rgba(23,65,120,.16)}
.login-side{background:linear-gradient(150deg,var(--blue-dark),#0e2340);color:#fff;padding:44px 40px;display:flex;flex-direction:column}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:56px}
.login-brand div{display:flex;flex-direction:column}
.login-brand strong{font-size:18px}
.login-brand small{font-size:12px;color:rgba(255,255,255,.65)}
.login-side h2{color:#fff;font-size:27px;margin-bottom:14px}
.login-side p{color:rgba(255,255,255,.8);font-size:14px;line-height:1.8}
.login-side ul{padding-left:20px;color:rgba(255,255,255,.82);font-size:13.5px;line-height:2.1}
.login-side-foot{margin-top:auto;padding-top:30px;font-size:12px;color:rgba(255,255,255,.5);border-top:1px solid rgba(255,255,255,.14)}
.login-form-side{display:grid;place-items:center;padding:44px 40px}
.login-form{width:100%;max-width:330px}
.login-form h1{font-size:25px;margin-bottom:6px}
.login-form>p{color:var(--muted);font-size:13.5px;margin-bottom:26px}
.login-form label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:16px}
.login-form input[type=text],.login-form input[type=password]{width:100%;border:1px solid var(--line);border-radius:8px;padding:11px 13px;font-size:14.5px;margin-top:7px;outline:0;font-family:inherit}
.login-form input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,86,160,.1)}
.login-hint{margin-top:20px;background:var(--bg);border-radius:8px;padding:11px 13px;font-size:12.5px;color:var(--muted);line-height:1.7}
.login-hint code{font-size:12px}
.login-back{display:inline-block;margin-top:22px;font-size:13px;color:var(--muted)}

@media (max-width:1100px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .dash-grid{grid-template-columns:1fr}
  .media-grid{grid-template-columns:repeat(3,1fr)}
  .detail-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:820px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;transform:translateX(-100%);transition:.22s;z-index:60}
  .sidebar.open{transform:translateX(0)}
  .side-toggle{display:block}
  .admin-content{padding:20px 16px 48px}
  .admin-topbar{padding:0 16px}
  .admin-warning{padding:10px 16px}
  .form-fields{grid-template-columns:1fr;padding:18px}
  .list-head{flex-direction:column;align-items:flex-start}
  .login-wrap{grid-template-columns:1fr}
  .login-side{display:none}
}
@media (max-width:560px){
  .stat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .stat-card{padding:14px;gap:10px}
  .stat-card strong{font-size:21px}
  .media-grid{grid-template-columns:repeat(2,1fr)}
  .detail-grid{grid-template-columns:1fr}
  .welcome{flex-direction:column;align-items:flex-start}
  .form-actions .btn{flex:1}
}

/* ---------- 增骏 Logo ---------- */
.side-brand-icon img{width:36px;height:36px;object-fit:contain;background:#fff;border-radius:9px;padding:3px;display:block}
.login-brand img{width:46px;height:46px;object-fit:contain;background:#fff;border-radius:10px;padding:4px;display:block}