/* ============================================================
   28_Left_Sidebar_Nav - 侧栏论坛
   布局: 左侧固定导航栏 + 主内容区
   前缀: ls-
   ============================================================ */

/* ---------- 变量与基础 ---------- */
:root{
  --ls-primary:#3B5BDB;
  --ls-primary-dark:#2B46B8;
  --ls-primary-light:#EAF0FF;
  --ls-accent:#0CA678;
  --ls-bg:#F4F6FB;
  --ls-surface:#FFFFFF;
  --ls-text:#1F2937;
  --ls-text-soft:#5B6478;
  --ls-text-mute:#98A2B3;
  --ls-border:#E5E8F0;
  --ls-sidebar-bg:#1E2640;
  --ls-sidebar-bg2:#262F4F;
  --ls-sidebar-text:#C7CFE4;
  --ls-sidebar-active:#3B5BDB;
  --ls-shadow:0 1px 3px rgba(20,30,60,.06),0 4px 16px rgba(20,30,60,.06);
  --ls-shadow-hover:0 6px 24px rgba(59,91,219,.16);
  --ls-radius:14px;
  --ls-radius-sm:8px;
  --ls-sidebar-w:248px;
  --ls-sidebar-w-collapsed:72px;
  --ls-transition:.26s cubic-bezier(.4,0,.2,1);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
.ls-body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--ls-bg);
  color:var(--ls-text);
  font-size:14px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
svg{flex-shrink:0;}

/* ---------- 整体布局 ---------- */
.ls-app{display:flex;min-height:100vh;}

/* ---------- 左侧固定导航栏 ---------- */
.ls-sidebar{
  width:var(--ls-sidebar-w);
  background:linear-gradient(180deg,var(--ls-sidebar-bg) 0%,var(--ls-sidebar-bg2) 100%);
  color:var(--ls-sidebar-text);
  display:flex;
  flex-direction:column;
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:100;
  transition:width var(--ls-transition);
  box-shadow:4px 0 24px rgba(10,16,40,.18);
}
.ls-sidebar-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 18px 14px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.ls-logo{display:flex;align-items:center;gap:10px;overflow:hidden;}
.ls-logo img{height:30px;width:auto;}
.ls-collapse{
  width:30px;height:30px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:var(--ls-sidebar-text);
  transition:background .2s;
}
.ls-collapse:hover{background:rgba(255,255,255,.12);}

.ls-sidenav{flex:1;overflow-y:auto;padding:12px 10px;}
.ls-sidenav::-webkit-scrollbar{width:5px;}
.ls-sidenav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:4px;}

.ls-nav-item{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;
  border-radius:10px;
  color:var(--ls-sidebar-text);
  font-size:14px;
  margin-bottom:3px;
  position:relative;
  transition:background .2s,color .2s,transform .15s;
  white-space:nowrap;overflow:hidden;
}
.ls-nav-item:hover{background:rgba(255,255,255,.10);color:#fff;transform:translateX(2px);}
.ls-nav-item.active{
  background:var(--ls-sidebar-active);
  color:#fff;
  box-shadow:0 4px 14px rgba(59,91,219,.45);
}
.ls-nav-text{flex:1;overflow:hidden;text-overflow:ellipsis;}
.ls-nav-badge{
  font-size:11px;
  background:rgba(255,255,255,.16);
  color:#fff;
  padding:2px 8px;border-radius:20px;
  min-width:24px;text-align:center;
}
.ls-nav-item.active .ls-nav-badge{background:rgba(255,255,255,.28);}

/* 侧边栏底部 */
.ls-sidebar-foot{
  padding:12px 14px 16px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;gap:6px;
}
.ls-foot-btn{
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;border-radius:10px;
  color:var(--ls-sidebar-text);font-size:13px;
  transition:background .2s;
}
.ls-foot-btn:hover{background:rgba(255,255,255,.10);color:#fff;}
.ls-user-card{
  display:flex;align-items:center;gap:10px;
  padding:10px;border-radius:12px;
  background:rgba(255,255,255,.06);
  margin-top:4px;
  overflow:hidden;
}
.ls-user-card img{width:36px;height:36px;border-radius:50%;}
.ls-user-info{display:flex;flex-direction:column;overflow:hidden;}
.ls-user-name{font-size:13px;color:#fff;font-weight:600;}
.ls-user-role{font-size:11px;color:#8FA0CC;}

/* ---------- 主内容区 ---------- */
.ls-main{
  flex:1;
  margin-left:var(--ls-sidebar-w);
  display:flex;flex-direction:column;
  min-width:0;
  transition:margin-left var(--ls-transition);
}

/* 顶部工具条 */
.ls-topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--ls-border);
  display:flex;align-items:center;gap:14px;
  padding:12px 24px;
}
.ls-mobile-toggle{
  display:none;
  width:38px;height:38px;border-radius:10px;
  align-items:center;justify-content:center;
  color:var(--ls-text);
}
.ls-mobile-toggle:hover{background:var(--ls-primary-light);}
.ls-breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ls-text-soft);}
.ls-breadcrumb a{display:flex;align-items:center;gap:4px;color:var(--ls-primary);font-weight:500;}
.ls-breadcrumb a:hover{text-decoration:underline;}
.ls-crumb-sep{color:var(--ls-text-mute);}
.ls-topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.ls-topbar-search{
  display:flex;align-items:center;gap:8px;
  background:var(--ls-bg);
  border:1px solid var(--ls-border);
  border-radius:22px;
  padding:8px 14px;
  color:var(--ls-text-mute);
  transition:border-color .2s,box-shadow .2s;
}
.ls-topbar-search:focus-within{border-color:var(--ls-primary);box-shadow:0 0 0 3px var(--ls-primary-light);}
.ls-topbar-search-input{border:none;background:none;outline:none;font-size:13px;width:200px;color:var(--ls-text);}
.ls-topbar-btn{
  position:relative;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--ls-text-soft);
  background:var(--ls-bg);
  transition:background .2s,color .2s;
}
.ls-topbar-btn:hover{background:var(--ls-primary-light);color:var(--ls-primary);}
.ls-msg-badge{
  position:absolute;top:2px;right:2px;
  background:#FA5252;color:#fff;
  font-size:10px;min-width:16px;height:16px;
  border-radius:10px;display:flex;align-items:center;justify-content:center;
  padding:0 4px;font-weight:700;
}

/* 内容区 */
.ls-content{padding:24px;flex:1;}

/* Banner */
.ls-banner{
  border-radius:var(--ls-radius);
  overflow:hidden;
  margin-bottom:24px;
  box-shadow:var(--ls-shadow);
}
.ls-banner img{width:100%;height:200px;object-fit:cover;}

/* 统计概览 */
.ls-overview{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-bottom:28px;
}
.ls-overview-card{
  background:var(--ls-surface);
  border-radius:var(--ls-radius);
  padding:18px 20px;
  display:flex;align-items:center;gap:14px;
  box-shadow:var(--ls-shadow);
  border-left:4px solid var(--ls-primary);
  transition:transform .25s,box-shadow .25s;
}
.ls-overview-card:hover{transform:translateY(-3px);box-shadow:var(--ls-shadow-hover);}
.ls-overview-card svg{color:#fff;background:var(--ls-primary);padding:8px;border-radius:10px;box-sizing:content-box;}
.ls-ov-1{border-left-color:#3B5BDB;} .ls-ov-1 svg{background:#3B5BDB;}
.ls-ov-2{border-left-color:#0CA678;} .ls-ov-2 svg{background:#0CA678;}
.ls-ov-3{border-left-color:#F59F00;} .ls-ov-3 svg{background:#F59F00;}
.ls-ov-4{border-left-color:#E64980;} .ls-ov-4 svg{background:#E64980;}
.ls-overview-card > div{display:flex;flex-direction:column;}
.ls-ov-num{font-size:22px;font-weight:700;color:var(--ls-text);}
.ls-ov-label{font-size:12px;color:var(--ls-text-mute);}

/* 板块区 */
.ls-sections{margin-bottom:28px;}
.ls-section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.ls-section-head h2{font-size:18px;font-weight:700;color:var(--ls-text);position:relative;padding-left:14px;}
.ls-section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:18px;background:var(--ls-primary);border-radius:2px;}
.ls-view-all{display:flex;align-items:center;gap:4px;font-size:13px;color:var(--ls-primary);font-weight:500;}
.ls-view-all:hover{gap:8px;}

.ls-board-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.ls-board-card{
  background:var(--ls-surface);
  border-radius:var(--ls-radius);
  padding:18px;
  box-shadow:var(--ls-shadow);
  transition:transform .25s,box-shadow .25s;
}
.ls-board-card:hover{transform:translateY(-3px);box-shadow:var(--ls-shadow-hover);}
.ls-board-card-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--ls-border);}
.ls-board-icon{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:#fff;}
.ls-ic-blue{background:#3B5BDB;} .ls-ic-teal{background:#0CA678;} .ls-ic-orange{background:#F59F00;}
.ls-ic-purple{background:#7048E8;} .ls-ic-green{background:#40C057;} .ls-ic-yellow{background:#FAB005;}
.ls-ic-cyan{background:#15AABF;} .ls-ic-red{background:#FA5252;} .ls-ic-indigo{background:#4C6EF5;} .ls-ic-pink{background:#E64980;}
.ls-board-card-head h3{flex:1;font-size:15px;font-weight:600;}
.ls-board-count{font-size:12px;color:var(--ls-text-mute);background:var(--ls-bg);padding:3px 10px;border-radius:20px;}
.ls-board-posts li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed var(--ls-border);}
.ls-board-posts li:last-child{border-bottom:none;}
.ls-board-posts li a{font-size:13px;color:var(--ls-text-soft);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;}
.ls-board-posts li a:hover{color:var(--ls-primary);}
.ls-board-posts li span{font-size:11px;color:var(--ls-text-mute);flex-shrink:0;}

/* 底部组件 */
.ls-bottom-widgets{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.ls-widget{background:var(--ls-surface);border-radius:var(--ls-radius);padding:18px;box-shadow:var(--ls-shadow);}
.ls-widget-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;margin-bottom:14px;color:var(--ls-text);}
.ls-widget-title svg{color:var(--ls-primary);}
.ls-hot-list li{display:flex;align-items:center;gap:10px;padding:8px 0;}
.ls-hot-list li a{flex:1;font-size:13px;color:var(--ls-text-soft);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.ls-hot-list li a:hover{color:var(--ls-primary);}
.ls-hot-rank{width:20px;height:20px;border-radius:5px;background:var(--ls-bg);color:var(--ls-text-mute);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.ls-rank-1{background:#FA5252;color:#fff;}
.ls-rank-2{background:#FF922B;color:#fff;}
.ls-rank-3{background:#FAB005;color:#fff;}
.ls-active-users{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.ls-active-user{display:flex;align-items:center;gap:8px;}
.ls-active-user img{width:32px;height:32px;border-radius:50%;}
.ls-active-user span{font-size:13px;font-weight:500;}
.ls-active-user em{font-size:11px;color:var(--ls-text-mute);font-style:normal;display:block;}

/* 页脚 */
.ls-footer{border-top:1px solid var(--ls-border);background:var(--ls-surface);padding:18px 24px;text-align:center;color:var(--ls-text-mute);font-size:12px;}

/* ============================================================
   list.html - 帖子列表
   ============================================================ */
.ls-board-info-bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:linear-gradient(135deg,var(--ls-primary) 0%,#5C7CFA 100%);
  color:#fff;border-radius:var(--ls-radius);
  padding:22px 26px;margin-bottom:20px;box-shadow:var(--ls-shadow);
}
.ls-board-info-text h1{font-size:22px;font-weight:700;margin-bottom:6px;}
.ls-board-info-text p{font-size:13px;opacity:.9;}
.ls-post-btn{
  display:flex;align-items:center;gap:6px;
  background:#fff;color:var(--ls-primary);
  padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;
  box-shadow:0 4px 12px rgba(0,0,0,.15);
  transition:transform .2s,box-shadow .2s;flex-shrink:0;
}
.ls-post-btn:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(0,0,0,.22);}

.ls-thread-table{
  background:var(--ls-surface);border-radius:var(--ls-radius);
  box-shadow:var(--ls-shadow);overflow:hidden;margin-bottom:20px;
}
.ls-thread-table-head{
  display:grid;
  grid-template-columns:1fr 160px 80px 90px 120px;
  gap:12px;padding:14px 20px;
  background:var(--ls-primary-light);
  font-size:12px;font-weight:600;color:var(--ls-text-soft);
  border-bottom:1px solid var(--ls-border);
}
.ls-thread-row{
  display:grid;
  grid-template-columns:1fr 160px 80px 90px 120px;
  gap:12px;padding:14px 20px;align-items:center;
  border-bottom:1px solid var(--ls-border);
  transition:background .18s;
}
.ls-thread-row:hover{background:var(--ls-primary-light);}
.ls-thread-row:last-child{border-bottom:none;}
.ls-thread-table .ls-th-title{display:flex;align-items:center;gap:8px;min-width:0;}
.ls-thread-tag{font-size:11px;padding:2px 7px;border-radius:5px;font-weight:700;color:#fff;flex-shrink:0;}
.ls-tag-hot{background:#FA5252;} .ls-tag-new{background:#40C057;} .ls-tag-top{background:#F59F00;}
.ls-thread-text{font-size:14px;color:var(--ls-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.ls-thread-row:hover .ls-thread-text{color:var(--ls-primary);}
.ls-th-author{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ls-text-soft);min-width:0;}
.ls-thread-avatar{width:28px;height:28px;border-radius:50%;}
.ls-th-author span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.ls-th-reply{font-size:13px;color:var(--ls-text);font-weight:600;text-align:center;}
.ls-th-view{font-size:13px;color:var(--ls-text-mute);text-align:center;}
.ls-th-time{font-size:12px;color:var(--ls-text-mute);}

/* 分页 */
.ls-pagination{display:flex;justify-content:center;align-items:center;gap:6px;flex-wrap:wrap;}
.ls-page-btn{
  min-width:36px;height:36px;padding:0 10px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--ls-surface);color:var(--ls-text-soft);font-size:13px;
  box-shadow:var(--ls-shadow);
  transition:all .18s;
}
.ls-page-btn:hover{background:var(--ls-primary);color:#fff;transform:translateY(-2px);}
.ls-page-btn.ls-active{background:var(--ls-primary);color:#fff;font-weight:600;}
.ls-page-btn.ls-disabled{color:var(--ls-text-mute);cursor:not-allowed;opacity:.5;}
.ls-page-btn.ls-disabled:hover{background:var(--ls-surface);color:var(--ls-text-mute);transform:none;}
.ls-page-dots{color:var(--ls-text-mute);padding:0 4px;}

/* ============================================================
   detail.html - 帖子详情
   ============================================================ */
.ls-detail-title{font-size:24px;font-weight:700;color:var(--ls-text);margin-bottom:14px;line-height:1.4;}
.ls-detail-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13px;color:var(--ls-text-soft);margin-bottom:20px;padding:14px 18px;background:var(--ls-surface);border-radius:var(--ls-radius);box-shadow:var(--ls-shadow);}
.ls-detail-meta span{display:flex;align-items:center;gap:6px;}
.ls-detail-meta svg{color:var(--ls-primary);}

.ls-post{
  display:flex;gap:18px;
  background:var(--ls-surface);border-radius:var(--ls-radius);
  box-shadow:var(--ls-shadow);padding:22px;margin-bottom:16px;
  transition:box-shadow .2s;
}
.ls-post:hover{box-shadow:var(--ls-shadow-hover);}
.ls-post-op{border-left:4px solid var(--ls-primary);}
.ls-post-aside{width:150px;flex-shrink:0;text-align:center;padding-right:18px;border-right:1px solid var(--ls-border);}
.ls-post-avatar{width:64px;height:64px;border-radius:50%;margin:0 auto 10px;border:2px solid var(--ls-primary-light);}
.ls-post-aside h3{font-size:14px;font-weight:600;color:var(--ls-text);margin-bottom:8px;}
.ls-post-role{display:inline-block;font-size:11px;padding:2px 10px;border-radius:20px;margin-bottom:10px;font-weight:500;}
.ls-role-vip{background:#FFF4E6;color:#F59F00;}
.ls-role-expert{background:#E6FCF5;color:#0CA678;}
.ls-role-active{background:var(--ls-primary-light);color:var(--ls-primary);}
.ls-role-new{background:#F3F0FF;color:#7048E8;}
.ls-post-stat{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--ls-text-mute);}
.ls-post-main{flex:1;min-width:0;}
.ls-post-floor{display:flex;align-items:center;gap:12px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--ls-border);}
.ls-floor-tag{font-size:12px;font-weight:600;padding:3px 12px;border-radius:6px;background:var(--ls-primary);color:#fff;}
.ls-post-time{font-size:12px;color:var(--ls-text-mute);margin-left:auto;}
.ls-post-content{font-size:14px;color:var(--ls-text);line-height:1.85;}
.ls-post-content p{margin-bottom:14px;}
.ls-post-content ul{margin:10px 0 14px 20px;}
.ls-post-content li{list-style:disc;margin-bottom:6px;}
.ls-post-image{width:100%;max-width:560px;border-radius:10px;margin:14px 0;box-shadow:var(--ls-shadow);}
.ls-post-actions{display:flex;gap:10px;margin-top:18px;padding-top:16px;border-top:1px solid var(--ls-border);}
.ls-action-btn{display:flex;align-items:center;gap:6px;padding:7px 14px;border-radius:20px;background:var(--ls-bg);color:var(--ls-text-soft);font-size:13px;transition:all .18s;}
.ls-action-btn:hover{background:var(--ls-primary-light);color:var(--ls-primary);}

.ls-replies-title{font-size:16px;font-weight:600;margin:24px 0 14px;color:var(--ls-text);padding-left:14px;position:relative;}
.ls-replies-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:18px;background:var(--ls-primary);border-radius:2px;}

.ls-reply-box{background:var(--ls-surface);border-radius:var(--ls-radius);box-shadow:var(--ls-shadow);padding:20px;margin-top:20px;}
.ls-reply-title{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--ls-text);}
.ls-reply-textarea{width:100%;min-height:120px;padding:14px;border:1px solid var(--ls-border);border-radius:10px;resize:vertical;font-family:inherit;font-size:14px;outline:none;transition:border-color .2s,box-shadow .2s;}
.ls-reply-textarea:focus{border-color:var(--ls-primary);box-shadow:0 0 0 3px var(--ls-primary-light);}
.ls-reply-tools{display:flex;align-items:center;gap:8px;margin-top:12px;}
.ls-reply-tool{width:38px;height:38px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:var(--ls-bg);color:var(--ls-text-soft);transition:all .18s;}
.ls-reply-tool:hover{background:var(--ls-primary-light);color:var(--ls-primary);}
.ls-reply-submit{margin-left:auto;background:var(--ls-primary);color:#fff;padding:9px 22px;border-radius:9px;font-size:14px;font-weight:600;transition:background .2s,transform .2s;}
.ls-reply-submit:hover{background:var(--ls-primary-dark);transform:translateY(-2px);}

/* ============================================================
   search.html - 搜索页
   ============================================================ */
.ls-search-hero{text-align:center;padding:36px 20px 30px;background:linear-gradient(135deg,var(--ls-primary) 0%,#5C7CFA 100%);border-radius:var(--ls-radius);color:#fff;margin-bottom:20px;box-shadow:var(--ls-shadow);}
.ls-search-hero h1{font-size:26px;font-weight:700;margin-bottom:18px;}
.ls-search-box{display:flex;align-items:center;gap:8px;max-width:640px;margin:0 auto;background:#fff;border-radius:26px;padding:8px 8px 8px 20px;box-shadow:0 8px 28px rgba(0,0,0,.18);}
.ls-search-icon{color:var(--ls-text-mute);}
.ls-search-input{flex:1;border:none;outline:none;font-size:15px;padding:8px 4px;color:var(--ls-text);}
.ls-search-btn{background:var(--ls-primary);color:#fff;padding:10px 24px;border-radius:20px;font-size:14px;font-weight:600;transition:background .2s;}
.ls-search-btn:hover{background:var(--ls-primary-dark);}

.ls-search-filters{display:flex;flex-wrap:wrap;align-items:center;gap:8px;background:var(--ls-surface);border-radius:var(--ls-radius);padding:14px 18px;box-shadow:var(--ls-shadow);margin-bottom:16px;}
.ls-filter-label{font-size:13px;color:var(--ls-text-soft);font-weight:600;margin-right:4px;}
.ls-filter-tag{padding:6px 16px;border-radius:20px;background:var(--ls-bg);color:var(--ls-text-soft);font-size:13px;transition:all .18s;}
.ls-filter-tag:hover{background:var(--ls-primary-light);color:var(--ls-primary);}
.ls-filter-tag.ls-active{background:var(--ls-primary);color:#fff;}

.ls-search-sort-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:16px;}
.ls-sort-label{font-size:13px;color:var(--ls-text-soft);}
.ls-sort-btn{padding:5px 14px;border-radius:18px;font-size:13px;color:var(--ls-text-soft);transition:all .18s;}
.ls-sort-btn:hover{background:var(--ls-bg);}
.ls-sort-btn.ls-active{background:var(--ls-primary-light);color:var(--ls-primary);font-weight:600;}
.ls-result-count{margin-left:auto;font-size:13px;color:var(--ls-text-mute);}

.ls-search-results{display:flex;flex-direction:column;gap:14px;margin-bottom:20px;}
.ls-result-item{background:var(--ls-surface);border-radius:var(--ls-radius);padding:18px 20px;box-shadow:var(--ls-shadow);transition:transform .2s,box-shadow .2s;border-left:3px solid transparent;}
.ls-result-item:hover{transform:translateY(-2px);box-shadow:var(--ls-shadow-hover);border-left-color:var(--ls-primary);}
.ls-result-title{display:flex;align-items:center;gap:10px;margin-bottom:8px;}
.ls-result-tag{font-size:11px;padding:2px 10px;border-radius:5px;color:#fff;font-weight:600;flex-shrink:0;}
.ls-tag-tech{background:#0CA678;} .ls-tag-finance{background:#F59F00;} .ls-tag-edu{background:#7048E8;} .ls-tag-auto{background:#4C6EF5;}
.ls-result-title h3{font-size:16px;font-weight:600;color:var(--ls-text);}
.ls-result-item:hover .ls-result-title h3{color:var(--ls-primary);}
.ls-result-excerpt{font-size:13px;color:var(--ls-text-soft);line-height:1.7;margin-bottom:10px;}
.ls-result-excerpt mark{background:#FFF3BF;color:var(--ls-text);padding:0 3px;border-radius:3px;}
.ls-result-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:12px;color:var(--ls-text-mute);}
.ls-result-meta span{display:flex;align-items:center;gap:5px;}

.ls-search-side-widgets{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.ls-hot-search-list{display:flex;flex-direction:column;gap:2px;}
.ls-hot-search-item{display:flex;align-items:center;gap:10px;padding:9px 8px;border-radius:8px;transition:background .18s;}
.ls-hot-search-item:hover{background:var(--ls-primary-light);}
.ls-hot-search-item span:nth-child(2){flex:1;font-size:13px;color:var(--ls-text);}
.ls-hot-search-item em{font-size:11px;color:var(--ls-text-mute);font-style:normal;}
.ls-suggest-tags{display:flex;flex-wrap:wrap;gap:8px;}
.ls-suggest-tag{padding:6px 14px;border-radius:20px;background:var(--ls-bg);color:var(--ls-text-soft);font-size:13px;transition:all .18s;}
.ls-suggest-tag:hover{background:var(--ls-primary);color:#fff;transform:translateY(-2px);}

/* ============================================================
   折叠状态
   ============================================================ */
.ls-app.ls-collapsed .ls-sidebar{width:var(--ls-sidebar-w-collapsed);}
.ls-app.ls-collapsed .ls-nav-text,
.ls-app.ls-collapsed .ls-nav-badge,
.ls-app.ls-collapsed .ls-logo img,
.ls-app.ls-collapsed .ls-user-info{display:none;}
.ls-app.ls-collapsed .ls-nav-item{justify-content:center;padding:11px 0;}
.ls-app.ls-collapsed .ls-foot-btn{justify-content:center;}
.ls-app.ls-collapsed .ls-user-card{justify-content:center;padding:10px 6px;}
.ls-app.ls-collapsed .ls-main{margin-left:var(--ls-sidebar-w-collapsed);}

/* 遮罩（移动端） */
.ls-overlay{display:none;position:fixed;inset:0;background:rgba(10,16,40,.5);z-index:99;opacity:0;transition:opacity .25s;}
.ls-overlay.ls-show{display:block;opacity:1;}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  .ls-overview{grid-template-columns:repeat(2,1fr);}
  .ls-board-grid{grid-template-columns:1fr;}
  .ls-bottom-widgets{grid-template-columns:1fr;}
  .ls-search-side-widgets{grid-template-columns:1fr;}
}
@media (max-width:900px){
  .ls-sidebar{transform:translateX(-100%);box-shadow:none;}
  .ls-sidebar.ls-open{transform:translateX(0);box-shadow:4px 0 24px rgba(10,16,40,.25);}
  .ls-main{margin-left:0;}
  .ls-app.ls-collapsed .ls-main{margin-left:0;}
  .ls-mobile-toggle{display:flex;}
  .ls-overlay.ls-show{display:block;}
  .ls-thread-table-head{display:none;}
  .ls-thread-row{grid-template-columns:1fr;gap:8px;padding:14px 16px;}
  .ls-th-author{order:2;}
  .ls-th-reply,.ls-th-view{display:inline-flex;}
  .ls-post-aside{width:100%;border-right:none;border-bottom:1px solid var(--ls-border);padding-right:0;padding-bottom:14px;display:flex;align-items:center;gap:12px;text-align:left;}
  .ls-post-avatar{margin:0;width:48px;height:48px;}
  .ls-post-aside h3{margin-bottom:0;}
  .ls-post-stat{flex-direction:row;gap:14px;margin-left:auto;}
  .ls-post{flex-direction:column;}
}
@media (max-width:600px){
  .ls-content{padding:16px;}
  .ls-topbar{padding:10px 14px;}
  .ls-topbar-search{display:none;}
  .ls-overview{grid-template-columns:1fr;}
  .ls-board-info-bar{flex-direction:column;align-items:flex-start;gap:14px;}
  .ls-detail-title{font-size:20px;}
  .ls-search-box{flex-direction:column;border-radius:14px;padding:12px;gap:10px;}
  .ls-search-btn{width:100%;}
  .ls-post-actions{flex-wrap:wrap;}
}

/* ============================================================
   CMS 扩展样式 (jv-pagination / 评论 / 下载 / 标签 / 用户 / 认证)
   使用 ls- 变量，不修改原始 CSS
   ============================================================ */

/* ---------- 分页 (CMS) ---------- */
.jv-pagination{
  display:flex;
  align-items:center;
  gap:6px;
  flex-wrap:wrap;
  padding:24px 0;
  justify-content:center;
}
.jv-page-info{
  font-size:13px;
  color:var(--ls-text-mute);
  margin-right:12px;
}
.jv-pagination a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:36px;
  height:36px;
  padding:0 10px;
  font-size:13px;
  font-weight:500;
  cursor:pointer;
  background:var(--ls-surface);
  color:var(--ls-text-soft);
  border-radius:9px;
  box-shadow:var(--ls-shadow);
  transition:all .18s;
  text-decoration:none;
}
.jv-pagination a:hover{
  background:var(--ls-primary);
  color:#fff;
  transform:translateY(-2px);
}
.jv-pagination a.active{
  background:var(--ls-primary);
  color:#fff;
  font-weight:600;
}
.jv-pagination a.disabled{
  color:var(--ls-text-mute);
  cursor:not-allowed;
  pointer-events:none;
  opacity:.5;
}
.jv-page-dots{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:36px;
  height:36px;
  color:var(--ls-text-mute);
  font-size:13px;
}

/* ---------- 评论区 ---------- */
.comment-section{margin-top:24px;}
.comment-form-area{margin-bottom:20px;}
.comment-login-notice{
  background:var(--ls-surface);
  border:1px solid var(--ls-border);
  border-radius:var(--ls-radius);
}
.comment-list{display:flex;flex-direction:column;}
.comment-item{
  display:flex;
  gap:14px;
  padding:18px 0;
  border-bottom:1px solid var(--ls-border);
}
.comment-item:last-child{border-bottom:none;}
.comment-avatar{
  flex-shrink:0;
  width:40px;
  height:40px;
  border-radius:50%;
  background:var(--ls-primary);
  color:#fff;
  font-size:16px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
}
.comment-main{flex:1;min-width:0;}
.comment-head{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:6px;
  flex-wrap:wrap;
}
.comment-author{font-size:14px;font-weight:600;color:var(--ls-text);}
.comment-reply-to{font-size:12px;color:var(--ls-text-mute);}
.comment-reply-to::before{content:'\2192';margin-right:3px;}
.comment-time{font-size:12px;color:var(--ls-text-mute);margin-left:auto;}
.comment-content{font-size:14px;color:var(--ls-text);line-height:1.7;word-break:break-word;}
.comment-actions{margin-top:8px;}
.comment-reply-btn{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border:none;
  background:transparent;
  color:var(--ls-text-mute);
  font-size:12px;
  cursor:pointer;
  transition:color .18s;
}
.comment-reply-btn:hover{color:var(--ls-primary);}
.comment-reply-form{margin-top:10px;display:flex;flex-direction:column;gap:8px;}
.comment-reply-input{
  width:100%;
  border:1px solid var(--ls-border);
  border-radius:var(--ls-radius-sm);
  padding:10px 14px;
  font-size:13px;
  line-height:1.5;
  resize:vertical;
  min-height:60px;
  font-family:inherit;
  background:var(--ls-bg);
  color:var(--ls-text);
  transition:border-color .2s;
}
.comment-reply-input:focus{border-color:var(--ls-primary);}
.comment-reply-submit{
  align-self:flex-end;
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 16px;
  border:none;
  background:var(--ls-primary);
  color:#fff;
  font-size:12px;
  font-weight:600;
  cursor:pointer;
  border-radius:var(--ls-radius-sm);
  transition:background .2s;
}
.comment-reply-submit:hover{background:var(--ls-primary-dark);}
.comment-reply-submit:disabled{opacity:.6;cursor:not-allowed;}
.comment-replies{
  margin-left:54px;
  padding-left:16px;
  border-left:2px solid var(--ls-border);
  display:flex;
  flex-direction:column;
}
.comment-reply-item{
  display:flex;
  gap:10px;
  padding:12px 0;
  border-bottom:1px solid var(--ls-border);
}
.comment-reply-item:last-child{border-bottom:none;}
.comment-reply-item .comment-avatar{width:32px;height:32px;font-size:13px;}
.comment-reply-item .comment-author{font-size:13px;}
.comment-reply-item .comment-content{font-size:13px;}
.comment-empty{text-align:center;padding:32px 16px;color:var(--ls-text-mute);font-size:14px;}
.comment-empty p{margin:0;}
.comment-load-more{display:flex;justify-content:center;padding:16px 0;}
.comment-load-more-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:36px;
  padding:0 28px;
  border:none;
  background:var(--ls-surface);
  color:var(--ls-text-soft);
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  border-radius:var(--ls-radius-sm);
  box-shadow:var(--ls-shadow);
  transition:all .18s;
}
.comment-load-more-btn:hover{background:var(--ls-primary);color:#fff;}
.comment-submit-btn:disabled{opacity:.6;cursor:not-allowed;}
.comment-char-count{font-size:13px;color:var(--ls-text-mute);}
.comment-count{font-size:14px;color:var(--ls-text-soft);font-weight:500;}

/* ---------- 下载信息 ---------- */
.ls-download-info{
  background:var(--ls-surface);
  border-radius:var(--ls-radius);
  padding:24px;
  margin-top:24px;
  box-shadow:var(--ls-shadow);
  text-align:center;
}
.ls-download-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--ls-primary);
  color:#fff;
  padding:12px 36px;
  border-radius:var(--ls-radius-sm);
  font-size:15px;
  font-weight:600;
  border:none;
  cursor:pointer;
  transition:background .2s,transform .2s;
}
.ls-download-btn:hover{background:var(--ls-primary-dark);transform:translateY(-2px);}

/* ---------- 标签云 ---------- */
.ls-tag-cloud{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding:16px 0;
}
.ls-tag-item{
  display:inline-flex;
  align-items:center;
  padding:6px 16px;
  border-radius:20px;
  background:var(--ls-primary-light);
  color:var(--ls-primary);
  font-size:13px;
  font-weight:500;
  transition:all .18s;
  text-decoration:none;
}
.ls-tag-item:hover{
  background:var(--ls-primary);
  color:#fff;
  transform:translateY(-2px);
}

/* ---------- 用户页面 ---------- */
.ls-user-page{
  background:var(--ls-surface);
  border-radius:var(--ls-radius);
  padding:24px;
  box-shadow:var(--ls-shadow);
}
.ls-user-form{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.ls-user-form label{
  font-size:13px;
  color:var(--ls-text-soft);
  font-weight:500;
  margin-bottom:6px;
  display:block;
}
.ls-user-form input{
  width:100%;
  height:44px;
  padding:0 14px;
  font-size:14px;
  color:var(--ls-text);
  background:var(--ls-bg);
  border:1px solid var(--ls-border);
  border-radius:var(--ls-radius-sm);
  transition:border-color .2s;
}
.ls-user-form input:focus{border-color:var(--ls-primary);}

/* ---------- 认证页面 (登录/注册) ---------- */
.ls-auth-wrap{
  display:flex;
  justify-content:center;
  padding:40px 0;
}
.ls-auth-box{
  width:100%;
  max-width:440px;
  background:var(--ls-surface);
  border-radius:var(--ls-radius);
  padding:36px 32px;
  box-shadow:var(--ls-shadow);
}
.ls-auth-box h1{
  font-size:24px;
  font-weight:700;
  color:var(--ls-text);
  text-align:center;
  margin-bottom:8px;
}
.ls-auth-box p{
  font-size:14px;
  color:var(--ls-text-mute);
  text-align:center;
  margin-bottom:28px;
}
.ls-auth-group{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-bottom:18px;
}
.ls-auth-group label{
  font-size:13px;
  color:var(--ls-text-soft);
  font-weight:500;
}
.ls-auth-group input{
  width:100%;
  height:46px;
  padding:0 14px;
  font-size:14px;
  color:var(--ls-text);
  background:var(--ls-bg);
  border:1px solid var(--ls-border);
  border-radius:var(--ls-radius-sm);
  transition:border-color .2s,background .2s;
}
.ls-auth-group input:focus{
  border-color:var(--ls-primary);
  background:var(--ls-surface);
}
.ls-auth-submit{
  width:100%;
  height:46px;
  font-size:15px;
  font-weight:600;
  background:var(--ls-primary);
  color:#fff;
  border:none;
  border-radius:var(--ls-radius-sm);
  cursor:pointer;
  transition:background .2s,transform .2s;
  margin-top:8px;
}
.ls-auth-submit:hover{background:var(--ls-primary-dark);transform:translateY(-2px);}

/* ---------- 友情链接行 ---------- */
.ls-link-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  padding:16px 0;
}
.ls-link-row a{
  font-size:13px;
  color:var(--ls-text-soft);
  padding:4px 12px;
  border-radius:var(--ls-radius-sm);
  background:var(--ls-bg);
  transition:all .18s;
}
.ls-link-row a:hover{
  color:var(--ls-primary);
  background:var(--ls-primary-light);
}

/* ---------- 帖子内容图片 ---------- */
.ls-post-content img{
  max-width:100%;
  height:auto;
  border-radius:var(--ls-radius-sm);
  margin:14px 0;
  box-shadow:var(--ls-shadow);
}