:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --primary:#1f4fd6;
  --primary-weak:#e7efff;
  --danger:#b42318;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{
  height:56px;
  background:var(--card);
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  padding:0 16px;
  gap:12px;
  /* topbar 固定在顶部，sidebar sticky 的 top 才能正确工作 */
  position: sticky;
  top: 0;
  z-index: 100;
}
.brand{font-weight:700}
.spacer{flex:1}
.pill{
  font-size:12px;
  padding:4px 10px;
  background:var(--primary-weak);
  border:1px solid #cfe0ff;
  border-radius:999px;
  color:var(--primary);
}

.layout{
  display:grid;
  grid-template-columns: 380px 1fr;
  gap:12px;
  padding:12px;
  min-height: calc(100vh - 56px);
  align-items: start;
}
/* 详情页：layout中只有.panel.main，让它跨满所有列 */
.layout.has-detail .panel.main{
  grid-column: 1 / -1;
}

.panel{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  overflow:visible;
}
.panel .hd{
  padding:12px 14px;
  border-bottom:1px solid var(--border);
  font-weight:600;
}
.panel .bd{padding:12px 14px;}
.panel .bd.list-container{max-height: calc(100vh - 200px); overflow-y: auto; overflow-x: hidden;}

.menu a{
  display:block;
  padding:10px 12px;
  border-radius:10px;
  color:var(--text);
}
.menu a.active, .menu a:hover{
  background:var(--primary-weak);
  border:1px solid #cfe0ff;
}

.filters{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap:10px;
}
.filters input, .filters select{
  width:100%;
  padding:8px 10px;
  border:1px solid var(--border);
  border-radius:10px;
  background:#fff;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:8px 12px;
  border:1px solid var(--border);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  font-weight:600;
}
.btn.primary{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
}
.btn.danger{
  background:#fff;
  border-color:#f2c6c2;
  color:var(--danger);
}

.list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.item{
  border:1px solid var(--border);
  border-radius:12px;
  padding:12px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.item .title{
  font-weight:700;
  line-height:1.35;
}
.meta{
  display:flex;
  gap:10px;
  color:var(--muted);
  font-size:12px;
  flex-wrap:wrap;
}
.badge{
  font-size:12px;
  padding:2px 8px;
  border:1px solid var(--border);
  border-radius:999px;
  color:var(--muted);
  background:#fff;
}
.badge.unread{
  border-color:#cfe0ff;
  color:var(--primary);
  background:var(--primary-weak);
}

.detail h2{margin:0 0 8px 0;font-size:18px}
.detail .content{
  border-top:1px solid var(--border);
  padding-top:10px;
}
.attachments ul{margin:8px 0 0 18px}

/* 正文内容区域隔离：防止爬取的外部CSS污染页面 */
#ann-content-inner{
  all: revert;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.8;
  color: #111827;
  word-break: break-word;
  overflow-wrap: break-word;
  /* 防止内部绝对/固定定位元素溢出 */
  position: relative;
  overflow: hidden;
}
#ann-content-inner *{
  /* 强制覆盖可能的固定/绝对定位，防止弹出广告 */
  position: static !important;
  float: none !important;
}
#ann-content-inner p, #ann-content-inner div,
#ann-content-inner span, #ann-content-inner li,
#ann-content-inner td, #ann-content-inner th {
  /* 恢复正常颜色，防止被外部CSS设置为透明或白色 */
  color: inherit;
  background: transparent;
  visibility: visible !important;
}
#ann-content-inner img{
  max-width: 100% !important;
  height: auto !important;
  display: inline-block;
}
#ann-content-inner table{
  border-collapse: collapse;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  display: block;
}
#ann-content-inner td, #ann-content-inner th{
  border: 1px solid #e5e7eb;
  padding: 6px 10px;
  text-align: left;
}
#ann-content-inner p{
  margin: 0.5em 0;
}

/* 关键词高亮样式 */
mark.kw-highlight{
  background-color: #fff3cd;
  color: #d97706;
  font-weight: 700;
  padding: 0 2px;
  border-radius: 3px;
  border-bottom: 2px solid #f59e0b;
}

.login-wrap{
  max-width:420px;
  margin:60px auto;
  padding:18px;
}

.flash{
  margin:10px 0;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--border);
  color:var(--muted);
  background:#fff;
}

/* ===== 移动端响应式 ===== */
@media (max-width: 1100px){
  .layout{
    grid-template-columns: 1fr;
    height: auto;
    gap: 8px;
    padding: 8px;
  }

  /* 手机端 topbar：允许换行、缩小间距 */
  .topbar {
    height: auto;
    min-height: 44px;
    flex-wrap: wrap;
    padding: 6px 10px;
    gap: 6px;
  }
  .brand {
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 55%;
  }
  .pill { font-size: 11px; padding: 2px 8px; }
  .topbar .meta {
    gap: 4px;
    font-size: 12px;
    flex-wrap: wrap;
  }
  .topbar .btn {
    padding: 4px 8px;
    font-size: 12px;
  }

  /* 手机端：sidebar 完全隐藏，改用顶部导航条 */
  .panel.sidebar {
    display: none;
  }
  /* 手机端：显示顶部导航条 */
  .mobile-nav-wrapper {
    display: block !important;
    margin: 8px 8px 0;
  }
}

/* 桌面端 */
@media (min-width: 1101px){
  .panel.sidebar .sidebar-toggle { display: none; }
  .panel.sidebar .sidebar-body { display: block !important; }
  .mobile-nav-wrapper { display: none !important; }

  /* 左侧筛选区：sticky 固定
     关键条件：
     1. topbar 已设为 position:sticky，所以 sidebar 的 top 用 68px（56px topbar + 12px gap）
     2. sidebar 自身不能有 overflow-y，否则 sticky 失效
     3. sidebar-body 内部滚动不影响 sticky */
  .panel.sidebar {
    position: sticky;
    top: 68px;
    align-self: start;
    max-height: calc(100vh - 80px);
    overflow: visible;
  }
  /* sidebar 内容超出时，内部滚动（不影响 sticky） */
  .panel.sidebar .sidebar-body {
    max-height: calc(100vh - 144px);
    overflow-y: auto;
  }
}

/* 手机端详情页顶部导航条（放在 layout 外，不参与 grid 布局） */
.mobile-nav-wrapper {
  display: none;
  position: relative;
}
.mobile-nav-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  flex-wrap: wrap;
}
/* 弹窗：绝对定位，紧贴导航条下方，不撑开布局 */
.mnb-popup {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 200;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 160px;
  max-width: 360px;
  width: max-content;
}
.mnb-btn {
  font-size: 12px !important;
  padding: 5px 10px !important;
  white-space: nowrap;
}
.mnb-btn.active {
  background: var(--primary) !important;
  border-color: var(--primary) !important;
  color: #fff !important;
}

.btn.small {
  padding: 4px 8px;
  font-size: 12px;
}