/*══════════════════════════════════════════════
  微软直开 · 现代化专业 UI  v6
  ══════════════════════════════════════════════*/

:root{
  --c-bg:#f6f7f9;
  --c-surface:#fff;
  --c-text:#13141a;
  --c-secondary:#5b5e6b;
  --c-muted:#9498a5;
  --c-accent:#4f46e5;
  --c-accent-h:#4338ca;
  --c-accent-soft:#eef0ff;
  --c-border:#e4e5ec;
  --c-border-light:#f1f2f5;
  --c-danger:#e53e3e;
  --c-danger-h:#c53030;
  --c-success:#059669;
  --c-warning:#d97706;
  --r:10px;
  --r-sm:7px;
  --r-lg:14px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.03);
  --shadow:0 1px 3px rgba(0,0,0,.04),0 1px 2px rgba(0,0,0,.03);
  --shadow-md:0 4px 12px rgba(0,0,0,.05);
  --shadow-lg:0 12px 32px rgba(0,0,0,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:15px;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--c-bg);color:var(--c-text);
  line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale
}
a{color:var(--c-accent);text-decoration:none;transition:color .15s}
a:hover{color:var(--c-accent-h)}
img{max-width:100%;display:block}

/* ━━━ 按钮 ━━━ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:38px;padding:0 18px;border-radius:var(--r-sm);
  font-size:13px;font-weight:600;letter-spacing:-.01em;
  cursor:pointer;border:1px solid var(--c-border);transition:all .15s;
  white-space:nowrap;line-height:36px;text-decoration:none;
  background:var(--c-surface);color:var(--c-text)
}
.btn-primary{background:var(--c-accent);border-color:var(--c-accent);color:#fff}
.btn-primary:hover{background:var(--c-accent-h);border-color:var(--c-accent-h);color:#fff}
.btn-outline{background:var(--c-surface);border-color:var(--c-border);color:var(--c-secondary)}
.btn-outline:hover{background:#fafafc;border-color:#cdd0d9;color:var(--c-text)}
.btn-danger{background:var(--c-danger);border-color:var(--c-danger);color:#fff}
.btn-danger:hover{background:var(--c-danger-h);border-color:var(--c-danger-h);color:#fff}
.btn-sm{height:32px;padding:0 12px;font-size:12px;line-height:30px;border-radius:6px}
.btn:disabled{opacity:.45;pointer-events:none}
.btn-link{background:none;border:none;padding:0;height:auto;line-height:inherit;font-size:inherit;cursor:pointer;color:var(--c-danger)}

/* ━━━ 卡片 ━━━ */
.card{background:var(--c-surface);border-radius:var(--r-lg);box-shadow:var(--shadow);border:1px solid var(--c-border-light)}
.card-body{padding:22px}
.card-body-sm{padding:15px}
.no-pad{padding:0}
.card-title{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:4px}
.card-desc{font-size:13px;color:var(--c-secondary);margin-bottom:12px;line-height:1.55}

/* ━━━ 表单 ━━━ */
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:5px;color:var(--c-secondary);letter-spacing:-.01em}
.form-control{
  width:100%;height:40px;padding:0 13px;border:1px solid var(--c-border);border-radius:var(--r-sm);
  font-size:14px;background:var(--c-surface);color:var(--c-text);
  transition:border-color .15s,box-shadow .15s
}
.form-control:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(79,70,229,.1)}
textarea.form-control{min-height:100px;padding:11px 13px;line-height:1.6;resize:vertical}
select.form-control{height:40px;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' fill='none' stroke='%235b5e6b' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}

/* ━━━ 消息 ━━━ */
.msg{padding:11px 16px;border-radius:var(--r-sm);margin-bottom:18px;font-size:13px;border:1px solid;line-height:1.5}
.msg-success,.msg-ok{background:#ecfdf5;color:var(--c-success);border-color:#a7f3d0}
.msg-error,.msg-err{background:#fef2f2;color:var(--c-danger);border-color:#fecaca}

/* ━━━ Toast ━━━ */
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%);z-index:9999;max-width:90vw;border-radius:var(--r);box-shadow:var(--shadow-lg);font-weight:500;animation:toastIn .25s ease}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(-8px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* ━━━ Modal ━━━ */
.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:999;justify-content:center;align-items:center;padding:20px;backdrop-filter:blur(2px)}
.modal.active,.modal-on{display:flex}
.modal-box{background:var(--c-surface);border-radius:var(--r-lg);width:100%;max-width:480px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:modalIn .2s ease}
@keyframes modalIn{from{opacity:0;transform:scale(.96) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal-header,.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--c-border-light);font-weight:700;font-size:15px;letter-spacing:-.01em}
.modal-close{background:none;border:none;font-size:22px;color:var(--c-muted);cursor:pointer;line-height:1;border-radius:6px;width:30px;height:30px;display:flex;align-items:center;justify-content:center;transition:all .12s}
.modal-close:hover{background:#f1f2f5;color:var(--c-text)}
.modal-body{padding:22px}
.modal-footer,.modal-foot{padding:14px 22px;border-top:1px solid var(--c-border-light);display:flex;justify-content:flex-end;gap:8px}

/* ━━━ Tabs ━━━ */
.tabs{display:flex;border-bottom:1px solid var(--c-border);margin-bottom:20px;gap:0}
.tab{padding:10px 20px;font-size:13px;font-weight:500;color:var(--c-muted);cursor:pointer;border-bottom:2px solid transparent;white-space:nowrap;transition:all .12s;letter-spacing:-.01em}
.tab:hover{color:var(--c-text)}
.tab.active,.tab-on{border-bottom-color:var(--c-accent);color:var(--c-accent);font-weight:600}
.tab-content,.tab-pane{display:none}
.tab-content.active,.tab-pane-on{display:block}

/* ━━━ 统计 ━━━ */
.stats{display:grid;gap:12px;margin-bottom:22px}
.stat-card,.stat-item{background:var(--c-surface);border-radius:var(--r);padding:18px;text-align:center;box-shadow:var(--shadow-sm);border:1px solid var(--c-border-light);transition:transform .15s,box-shadow .15s}
.stat-card:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.stat-num{font-size:30px;font-weight:800;color:var(--c-accent);line-height:1.15;letter-spacing:-.02em}
.stat-lbl{font-size:12px;color:var(--c-muted);margin-top:4px;font-weight:500}

/* ━━━ 表格 ━━━ */
.table-wrap{overflow-x:auto;border-radius:var(--r)}
table{width:100%;border-collapse:collapse}
table th,table td{padding:11px 16px;text-align:left;font-size:13px;border-bottom:1px solid var(--c-border-light)}
table th{font-weight:700;color:var(--c-secondary);background:#fafafc;white-space:nowrap;font-size:12px;letter-spacing:.02em;text-transform:uppercase}
table tr:last-child td{border-bottom:none}
table tr:hover td{background:#fafafc}

/* ━━━ 搜索 ━━━ */
.search-row,.search-bar{display:flex;gap:10px;margin-bottom:18px;align-items:center}
.search-row .form-control,.search-bar .form-control{flex:1}

/* ━━━ 列表 ━━━ */
.list-item,.list-row{display:flex;align-items:flex-start;justify-content:space-between;padding:15px 0;border-bottom:1px solid var(--c-border-light);gap:12px}
.list-item:last-child,.list-row:last-child{border-bottom:none}
.list-meta{font-size:12px;color:var(--c-muted)}

/* ━━━ 空状态 ━━━ */
.empty{padding:52px 20px;text-align:center;color:var(--c-muted);font-size:14px}

/* ━━━ 分页 ━━━ */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;padding:18px 0}
.page-info{font-size:13px;color:var(--c-secondary);padding:0 8px}

/* ━━━ 页头 ━━━ */
.page-header,.page-head{margin-bottom:26px}
.page-header h1,.page-head h1{font-size:23px;font-weight:800;letter-spacing:-.02em;color:var(--c-text)}
.page-header p,.page-head p{font-size:13px;color:var(--c-muted);margin-top:3px}

/* ━━━ 开关 ━━━ */
.toggle-wrap{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.toggle{position:relative;width:44px;height:24px;cursor:pointer;flex-shrink:0}
.toggle input{opacity:0;position:absolute;width:0;height:0}
.toggle .track,.toggle .slider{position:absolute;inset:0;background:#d1d3db;border-radius:24px;transition:.2s}
.toggle .track::after,.toggle .slider::after{content:'';position:absolute;left:2px;top:2px;width:20px;height:20px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 2px rgba(0,0,0,.1)}
.toggle input:checked+.track,.toggle input:checked+.slider{background:var(--c-accent)}
.toggle input:checked+.track::after,.toggle input:checked+.slider::after{transform:translateX(20px)}
.toggle-lbl{font-size:13px;color:var(--c-secondary);font-weight:500}

/* ━━━ 反馈类型卡片 ━━━ */
.type-group,.type-row{display:flex;gap:10px;margin-bottom:10px}
.type-group>label,.type-row>label{flex:1;cursor:pointer}
.type-group input,.type-row input{position:absolute;opacity:0}
.type-card{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--c-surface);border:2px solid var(--c-border);border-radius:var(--r);transition:all .15s}
.type-group input:checked+.type-card,.type-row input:checked+.type-card{border-color:var(--c-accent);background:var(--c-accent-soft);box-shadow:0 0 0 3px rgba(79,70,229,.06)}
.type-card .icon,.type-card .type-icon{font-size:24px;flex-shrink:0}
.type-card .info,.type-card .type-info{min-width:0}
.type-card .name,.type-card .type-name{font-size:14px;font-weight:700;letter-spacing:-.01em}
.type-card .desc,.type-card .type-desc{font-size:12px;color:var(--c-muted);margin-top:1px}

/* ━━━ 对话气泡 ━━━ */
.msg-item,.chat-item{padding:9px 12px;border-radius:var(--r-sm);font-size:13px;margin-bottom:4px}
.msg-item.admin,.chat-admin{background:var(--c-accent-soft);border-left:3px solid var(--c-accent)}
.msg-item.user,.chat-user{background:#f8f9fc;border:1px solid #e4e5ec;border-left:3px solid #9498a5}
.msg-item .role,.chat-role{font-weight:700;font-size:11px;letter-spacing:.01em}
.msg-item .role.admin{color:var(--c-accent)}
.msg-item .role.user{color:var(--c-secondary)}
.msg-item .time,.chat-time{color:var(--c-muted);font-size:10px;margin-left:10px}

/* ━━━ 密码提示 ━━━ */
.pwd-hints,.pwd-list{margin-top:8px;padding-top:8px;border-top:1px solid var(--c-border-light)}
.pwd-hint,.pwd-tag{display:inline-block;font-size:11px;color:var(--c-secondary);background:#fafafc;border:1px solid var(--c-border);padding:3px 10px;margin:2px 4px 2px 0;border-radius:20px;font-weight:500}

/* ━━━ 下载选项 ━━━ */
.dl-options{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.dl-opt{
  padding:6px 16px;background:var(--c-accent-soft);border:1px solid rgba(79,70,229,.2);
  border-radius:20px;font-size:12px;color:var(--c-accent);cursor:pointer;
  font-weight:600;line-height:22px;transition:all .12s
}
.dl-opt:hover{background:#dfe2fd}
.dl-opt.disabled,.dl-opt.off{background:#f1f2f5;color:var(--c-muted);border-color:var(--c-border);cursor:default}
.dl-opt.off:hover{background:#f1f2f5}

/* ━━━ 播放器 ━━━ */
.player-wrap,.player-box{display:none}
.player-wrap.active,.player-box.on{display:block}
.play-overlay{opacity:0;transition:opacity .3s}
.video-card:hover .play-overlay{opacity:1}

/* ═══════════════════════════════════════════
   桌面端后台
   ══════════════════════════════════════════ */
.desktop .admin-shell{display:flex;min-height:100vh}
.desktop .admin-bar{
  width:232px;flex-shrink:0;background:var(--c-surface);
  border-right:1px solid var(--c-border-light);
  position:sticky;top:0;height:100vh;overflow-y:auto;
  display:flex;flex-direction:column;padding:22px 0
}
.desktop .bar-logo{display:flex;flex-direction:column;align-items:center;padding:0 18px 20px;margin-bottom:8px;border-bottom:1px solid var(--c-border-light)}
.desktop .bar-logo img{width:38px;height:38px;border-radius:10px;box-shadow:var(--shadow-sm)}
.desktop .bar-name{font-size:14px;font-weight:700;color:var(--c-text);margin-top:8px;letter-spacing:-.01em}
.desktop .bar-link{
  display:flex;align-items:center;gap:11px;padding:11px 20px;
  font-size:13px;font-weight:500;color:var(--c-secondary);margin:1px 10px;
  border-radius:var(--r-sm);transition:all .12s;letter-spacing:-.01em
}
.desktop .bar-link:hover{background:#f5f5f9;color:var(--c-text)}
.desktop .bar-link.on{background:var(--c-accent-soft);color:var(--c-accent);font-weight:700}
.desktop .bar-link .bar-ic{font-size:17px;width:22px;text-align:center;flex-shrink:0}
.desktop .bar-logout{margin-top:auto;border-top:1px solid var(--c-border-light);padding-top:14px;margin:auto 10px 0;color:var(--c-muted);border-radius:var(--r-sm)}
.desktop .bar-logout:hover{color:var(--c-danger);background:#fef2f2}
.desktop .admin-ham{display:none}
.desktop .admin-body{flex:1;padding:30px 36px;min-width:0;max-width:1200px}
.desktop .stats{grid-template-columns:repeat(auto-fill,minmax(155px,1fr))}

/* ═══════════════════════════════════════════
   移动端后台
   ══════════════════════════════════════════ */
.mobile .admin-shell{min-height:100vh;padding-top:52px}
.mobile .admin-bar{display:none}

/* 顶栏 */
.mobile .admin-top{
  position:fixed;top:0;left:0;right:0;z-index:200;
  height:52px;background:var(--c-surface);border-bottom:1px solid var(--c-border-light);
  display:flex;align-items:center;padding:0 14px;backdrop-filter:blur(12px);
  background:rgba(255,255,255,.88)
}
.mobile .admin-ham{
  width:38px;height:38px;font-size:22px;color:var(--c-secondary);
  border:none;background:none;cursor:pointer;display:flex;
  align-items:center;justify-content:center;flex-shrink:0;border-radius:var(--r-sm);
  transition:background .12s
}
.mobile .admin-ham:active{background:#f1f2f5}
.mobile .top-title{
  flex:1;text-align:center;font-size:16px;font-weight:700;color:var(--c-text);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 8px;letter-spacing:-.01em
}
.mobile .top-ctrl{flex-shrink:0}

/* 遮罩 */
.mobile .nav-overlay{display:none;position:fixed;inset:0;z-index:250;background:rgba(0,0,0,.45);backdrop-filter:blur(2px)}
.mobile .nav-overlay.on{display:block}

/* 滑出菜单 */
.mobile .nav-drawer{
  position:fixed;top:0;left:-280px;bottom:0;z-index:260;
  width:280px;background:var(--c-surface);overflow-y:auto;
  transition:left .28s cubic-bezier(.4,0,.2,1);
  box-shadow:4px 0 24px rgba(0,0,0,.08);padding:24px 0
}
.mobile .nav-drawer.on{left:0}
.mobile .drawer-logo{display:flex;flex-direction:column;align-items:center;padding:0 20px 20px;margin-bottom:8px;border-bottom:1px solid var(--c-border-light)}
.mobile .drawer-logo img{width:42px;height:42px;border-radius:10px;box-shadow:var(--shadow-sm)}
.mobile .drawer-logo p{font-size:14px;font-weight:700;color:var(--c-text);margin-top:6px;letter-spacing:-.01em}
.mobile .drawer-link{
  display:flex;align-items:center;gap:12px;padding:13px 22px;
  font-size:15px;font-weight:500;color:var(--c-secondary);margin:2px 8px;
  border-radius:var(--r);transition:all .12s
}
.mobile .drawer-link:hover{background:#f5f5f9}
.mobile .drawer-link.on{background:var(--c-accent-soft);color:var(--c-accent);font-weight:700}
.mobile .drawer-link .dr-ic{font-size:19px;width:26px;text-align:center;flex-shrink:0}
.mobile .drawer-logout{margin-top:auto;border-top:1px solid var(--c-border-light);padding-top:14px;margin:auto 8px 0;color:var(--c-muted);border-radius:var(--r)}
.mobile .drawer-logout:hover{color:var(--c-danger);background:#fef2f2}

/* 移动端主体 */
.mobile .admin-body{padding:16px}
.mobile .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r)}
.mobile table{width:100%;min-width:auto}
.mobile table th,.mobile table td{padding:9px 12px;font-size:12px;white-space:nowrap}
.mobile .page-header h1,.mobile .page-head h1{font-size:20px}
.mobile .page-header,.mobile .page-head{margin-bottom:18px}
.mobile .stats{grid-template-columns:repeat(2,1fr);gap:8px}
.mobile .stat-card,.mobile .stat-item{padding:14px}
.mobile .stat-num{font-size:24px}
.mobile .grid-2{grid-template-columns:1fr}
.mobile .card-body{padding:16px}

/* 移动端表单 */
.mobile .form-control{font-size:16px}
.mobile .tabs{overflow-x:auto;-webkit-overflow-scrolling:touch}
.mobile .tab{padding:10px 16px;font-size:12px;flex-shrink:0}
.mobile .btn{height:42px;font-size:14px;padding:0 20px}
.mobile .btn-sm{height:36px;font-size:13px;padding:0 14px}

/* 移动端Modal底部出 */
.mobile .modal{align-items:flex-end;padding:0}
.mobile .modal-box{border-radius:var(--r-lg) var(--r-lg) 0 0;max-width:100%}
.mobile .modal-header,.mobile .modal-head{padding:16px 20px}
.mobile .modal-body{padding:20px}
.mobile .modal-footer,.mobile .modal-foot{padding:12px 20px}

/* 移动端类型选择 */
.mobile .type-group,.mobile .type-row{flex-direction:column}

/* ═══════════════════════════════════════════
   前台
   ══════════════════════════════════════════ */
.wrap,.site-wrap{max-width:1160px;margin:0 auto;padding:0 24px}

.site-header,.site-head{text-align:center;padding:36px 0 20px;border-bottom:1px solid var(--c-border);margin-bottom:32px}
.site-header h1,.site-head h1{font-size:24px;color:var(--c-accent);font-weight:800;letter-spacing:-.03em}
.site-header .tagline{font-size:13px;color:var(--c-muted);margin-top:4px;font-weight:500}

.site-nav,.nav-links{margin-top:16px}
.site-nav a,.nav-links a{
  display:inline-block;padding:8px 24px;background:var(--c-surface);
  border:1px solid var(--c-border);border-radius:20px;font-size:13px;
  color:var(--c-secondary);margin:0 3px;line-height:24px;font-weight:500;
  transition:all .12s
}
.site-nav a:hover,.nav-links a:hover{border-color:var(--c-accent);color:var(--c-accent);box-shadow:var(--shadow-sm)}

/* 前台 Tab */
.categories,.cat-row{display:flex;gap:8px;margin-bottom:22px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
.cat,.cat-tab{
  padding:8px 22px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:20px;
  font-size:13px;cursor:pointer;white-space:nowrap;flex-shrink:0;line-height:24px;
  font-weight:500;transition:all .12s
}
.cat:hover,.cat-tab:hover{border-color:var(--c-accent);color:var(--c-accent)}
.cat.active,.cat.on,.cat-tab.on{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}

/* 前台卡片网格 */
.grid,.card-grid{display:grid;gap:18px;margin-bottom:26px}
.desktop .grid,.desktop .card-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.mobile .grid,.mobile .card-grid{grid-template-columns:1fr;gap:12px}

/* 下载链接 */
.dl-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.dl-btn{
  padding:6px 16px;background:var(--c-accent-soft);border:1px solid rgba(79,70,229,.18);
  border-radius:20px;font-size:12px;color:var(--c-accent);cursor:pointer;
  font-weight:600;line-height:22px;transition:all .12s
}
.dl-btn:hover{background:#dfe2fd}
.dl-btn.off{background:#f1f2f5;color:var(--c-muted);border-color:var(--c-border);cursor:default}

/* Footer */
.site-footer,.site-foot{text-align:center;margin-top:44px;padding-top:22px;border-top:1px solid var(--c-border);color:var(--c-muted);font-size:13px}

/* 移动端前台 */
.mobile .wrap,.mobile .site-wrap{padding:0 14px}
.mobile .site-header,.mobile .site-head{padding:24px 0 14px;margin-bottom:20px}
.mobile .site-header h1,.mobile .site-head h1{font-size:21px}
.mobile .cat,.mobile .cat-tab{padding:7px 18px;font-size:12px}
.mobile .site-footer,.mobile .site-foot{font-size:12px;margin-top:32px;padding-top:16px}
.mobile .search-row,.mobile .search-bar{flex-wrap:wrap}

/* ═══════════════════════════════════════════
   工具类
   ══════════════════════════════════════════ */
.flex{display:flex}.flex-1{flex:1;min-width:0}
.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}
.justify-between{justify-content:space-between}
.flex-wrap{flex-wrap:wrap}.flex-col{flex-direction:column}.flex-shrink-0{flex-shrink:0}
.flex-gap-4,.gap-4{gap:4px}.flex-gap-8,.gap-8{gap:8px}.flex-gap-12,.gap-12{gap:12px}.gap-16{gap:16px}
.mb-0{margin-bottom:0}.mb-4{margin-bottom:4px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}
.mb-16{margin-bottom:16px}.mb-20{margin-bottom:20px}.mb-24{margin-bottom:24px}
.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}
.w-full{width:100%}.w-auto{width:auto}.min-w-160{min-width:160px}
.text-sm{font-size:13px}.text-xs{font-size:12px;color:var(--c-muted)}
.text-bold,.font-bold{font-weight:700}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}

/* ━━━ 选择框 ━━━ */
::selection{background:rgba(79,70,229,.15);color:var(--c-text)}

/* ━━━ 滚动条 ━━━ */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#d1d3db;border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:#b0b3bd}

/* ━━━ 登录页 ━━━ */
.login-body{background:var(--c-bg);display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.login-box{background:var(--c-surface);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);width:100%;max-width:400px;padding:40px 36px;border:1px solid var(--c-border-light)}
.login-box .logo-area{text-align:center;margin-bottom:20px}
.login-box .logo-area img{width:48px;height:48px;border-radius:12px;box-shadow:var(--shadow-sm)}
.login-box h1{font-size:20px;font-weight:800;text-align:center;margin-bottom:4px;letter-spacing:-.02em;color:var(--c-text)}
.login-box .sub{font-size:13px;color:var(--c-muted);text-align:center;margin-bottom:24px}