/* ============================================================
   39_Pure_White_Typo - 纯白排版导向
   前缀: pt-
   配色: #333333(主) / #FFFFFF(背景) / #FAFAFA(表面)
         #1A1A1A(文字) / #EEEEEE(边框)
   特色: 纯白背景、排版为主、大量留白、细线分隔、
         优雅衬线/无衬线混排、大字号标题
   ============================================================ */

/* ---------- 变量 ---------- */
:root{
  --pt-main:#333333;
  --pt-bg:#FFFFFF;
  --pt-surface:#FAFAFA;
  --pt-surface-2:#F5F5F5;
  --pt-text:#1A1A1A;
  --pt-text-dim:#666666;
  --pt-text-faint:#999999;
  --pt-border:#EEEEEE;
  --pt-border-dark:#DDDDDD;
  --pt-radius:0px;
  --pt-max:1200px;
  --pt-serif:Georgia,'Times New Roman','Songti SC','SimSun',serif;
  --pt-sans:-apple-system,BlinkMacSystemFont,'Segoe UI','Helvetica Neue','PingFang SC',Arial,sans-serif;
}

/* ---------- 重置 ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--pt-sans);
  background:var(--pt-bg);
  color:var(--pt-text);
  line-height:1.8;
  font-size:15px;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--pt-main);text-decoration:none;transition:color .2s}
a:hover{color:var(--pt-text)}
img{max-width:100%;display:block}
ul{list-style:none}
input,textarea,button{font-family:inherit;outline:none}

/* ---------- 容器 ---------- */
.pt-container{
  max-width:var(--pt-max);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 头部 ---------- */
.pt-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--pt-border);
}
.pt-header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.pt-logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.pt-logo img{height:32px;width:32px}
.pt-logo-text{
  font-family:var(--pt-serif);
  font-size:24px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--pt-text);
}
.pt-nav{
  display:flex;
  align-items:center;
  gap:0;
  flex:1;
  overflow-x:auto;
  scrollbar-width:none;
}
.pt-nav::-webkit-scrollbar{display:none}
.pt-nav-item{
  color:var(--pt-text-dim);
  font-size:13px;
  font-weight:400;
  letter-spacing:.5px;
  padding:10px 14px;
  white-space:nowrap;
  transition:color .2s;
}
.pt-nav-item:hover{color:var(--pt-text)}
.pt-nav-item.active{color:var(--pt-text);font-weight:600}
.pt-header-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.pt-search-mini{
  display:flex;
  align-items:center;
  gap:8px;
  background:var(--pt-surface);
  border:1px solid var(--pt-border);
  padding:8px 12px;
  color:var(--pt-text-faint);
  transition:border-color .2s;
}
.pt-search-mini:focus-within{border-color:var(--pt-border-dark)}
.pt-search-mini input{
  background:none;border:none;color:var(--pt-text);font-size:13px;width:120px;
}
.pt-search-mini input::placeholder{color:var(--pt-text-faint)}
.pt-icon-btn{
  position:relative;
  background:none;
  border:none;
  color:var(--pt-text-dim);
  cursor:pointer;
  padding:8px;
  display:flex;align-items:center;justify-content:center;
  transition:color .2s;
}
.pt-icon-btn:hover{color:var(--pt-text)}
.pt-badge{
  position:absolute;
  top:2px;right:2px;
  background:var(--pt-text);
  color:#fff;
  font-size:10px;
  font-weight:600;
  min-width:16px;height:16px;
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  padding:0 4px;
}
.pt-avatar-sm img{width:32px;height:32px;border-radius:50%;border:1px solid var(--pt-border)}
.pt-mobile-toggle{display:none}

/* ---------- 语言菜单 ---------- */
.pt-lang-menu{position:relative}
.pt-lang-menu summary{
  list-style:none;cursor:pointer;
  background:var(--pt-surface);
  border:1px solid var(--pt-border);
  padding:8px;
  color:var(--pt-text-dim);
  display:flex;align-items:center;justify-content:center;
  transition:border-color .2s;
}
.pt-lang-menu summary::-webkit-details-marker{display:none}
.pt-lang-menu summary:hover{border-color:var(--pt-border-dark)}
.pt-langs{
  position:absolute;
  right:0;top:100%;
  display:grid;
  grid-template-columns:repeat(2,minmax(120px,1fr));
  gap:4px;
  min-width:260px;
  background:var(--pt-bg);
  border:1px solid var(--pt-border);
  padding:8px;
  box-shadow:0 4px 12px rgba(0,0,0,.08);
  z-index:200;
  margin-top:4px;
}
.pt-langs a{
  padding:8px 10px;
  font-size:13px;
  color:var(--pt-text-dim);
  line-height:1.3;
  word-break:break-word;
  transition:all .15s;
}
.pt-langs a:hover{background:var(--pt-surface);color:var(--pt-text)}

/* ---------- 横幅 ---------- */
.pt-banner{
  margin:32px 0;
  overflow:hidden;
  border:1px solid var(--pt-border);
}
.pt-banner img{width:100%}

/* ---------- 主布局 ---------- */
.pt-main{
  display:grid;
  grid-template-columns:1fr 300px;
  gap:48px;
  margin-bottom:56px;
}
.pt-content{min-width:0}

/* ---------- 板块标题 ---------- */
.pt-section-title{
  font-family:var(--pt-serif);
  font-size:32px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--pt-text);
  margin-bottom:28px;
  padding-bottom:16px;
  border-bottom:2px solid var(--pt-text);
  line-height:1.3;
}

/* ---------- 论坛板块卡片 ---------- */
.pt-forum-block{
  background:var(--pt-bg);
  border-bottom:1px solid var(--pt-border);
  margin-bottom:0;
  transition:background .2s;
}
.pt-forum-block:hover{background:var(--pt-surface)}
.pt-forum-head{
  display:flex;
  align-items:center;
  gap:18px;
  padding:22px 4px;
}
.pt-forum-icon{
  width:48px;height:48px;
  flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  color:var(--pt-main);
  border:1px solid var(--pt-border);
}
.pt-forum-info{flex:1;min-width:0}
.pt-forum-name{
  font-family:var(--pt-serif);
  font-size:20px;font-weight:700;letter-spacing:.3px;
  color:var(--pt-text);
}
.pt-forum-desc{font-size:13px;color:var(--pt-text-dim);margin-top:2px;font-style:italic}
.pt-forum-stats{text-align:right;flex-shrink:0}
.pt-stat-num{
  font-family:var(--pt-serif);
  font-size:24px;font-weight:700;
  color:var(--pt-text);
  line-height:1;
}
.pt-stat-label{font-size:10px;color:var(--pt-text-faint);letter-spacing:2px;text-transform:uppercase;margin-top:2px}

/* 板块帖子列表 */
.pt-forum-posts{padding:0 0 8px}
.pt-forum-post-link{
  display:flex;align-items:center;gap:12px;
  padding:10px 4px;
  color:var(--pt-text-dim);
  font-size:14px;
  border-bottom:1px solid var(--pt-border);
  transition:all .2s;
}
.pt-forum-post-link:hover{
  color:var(--pt-text);
  padding-left:12px;
}
.pt-forum-post-link:hover .pt-forum-post-title{text-decoration:underline;text-underline-offset:3px}
.pt-forum-post-tag{
  flex-shrink:0;
  font-size:10px;font-weight:700;letter-spacing:1px;
  padding:3px 8px;
  min-width:40px;text-align:center;
  background:var(--pt-surface-2);
  color:var(--pt-text-dim);
  border:1px solid var(--pt-border);
}
.pt-forum-post-tag.hot{
  background:var(--pt-text);
  color:#fff;
  border-color:var(--pt-text);
}
.pt-forum-post-tag:empty{visibility:hidden}
.pt-forum-post-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500;color:var(--pt-text-dim)}
.pt-forum-post-title:hover{color:var(--pt-text)}
.pt-forum-post-time{flex-shrink:0;font-size:12px;color:var(--pt-text-faint);font-variant-numeric:tabular-nums}

/* ---------- 侧边栏 ---------- */
.pt-sidebar{display:flex;flex-direction:column;gap:36px}
.pt-widget{
  background:var(--pt-bg);
}
.pt-widget-head{
  display:flex;align-items:center;gap:8px;
  padding:0 0 12px;
  font-family:var(--pt-serif);
  font-size:16px;font-weight:700;letter-spacing:.3px;
  color:var(--pt-text);
  border-bottom:1px solid var(--pt-text);
  text-transform:none;
}
.pt-widget-body{padding:16px 0 0}
.pt-online-stat{
  display:flex;justify-content:space-between;align-items:baseline;
  padding:10px 0;
  border-bottom:1px solid var(--pt-border);
}
.pt-online-stat:last-child{border-bottom:none}
.pt-stat-name{font-size:14px;color:var(--pt-text-dim)}
.pt-stat-val{font-family:var(--pt-serif);font-size:18px;font-weight:700;color:var(--pt-text)}

.pt-hot-item{
  display:flex;align-items:center;gap:14px;
  padding:10px 0;
  border-bottom:1px solid var(--pt-border);
}
.pt-hot-item:last-child{border-bottom:none}
.pt-hot-rank{
  flex-shrink:0;
  width:24px;
  font-family:var(--pt-serif);
  font-size:18px;font-weight:700;
  color:var(--pt-text-faint);
  text-align:center;
}
.pt-hot-rank.top{color:var(--pt-text)}
.pt-hot-title{flex:1;font-size:14px;color:var(--pt-text-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:400}
.pt-hot-title:hover{color:var(--pt-text)}
.pt-hot-views{flex-shrink:0;font-size:12px;color:var(--pt-text-faint);font-variant-numeric:tabular-nums}

/* CSS计数器实现热门排行序号 */
.pt-hot-list{counter-reset:hotrank}
.pt-hot-list .pt-hot-item{counter-increment:hotrank}
.pt-hot-list .pt-hot-rank::before{content:counter(hotrank)}
.pt-hot-list .pt-hot-item:nth-child(-n+3) .pt-hot-rank{color:var(--pt-text)}

/* ---------- 按钮 ---------- */
.pt-btn{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;letter-spacing:.5px;
  padding:12px 28px;
  cursor:pointer;
  border:1px solid var(--pt-text);
  background:var(--pt-text);
  color:#fff;
  transition:all .2s;
}
.pt-btn:hover{
  background:var(--pt-bg);
  color:var(--pt-text);
}

/* ---------- 面包屑 ---------- */
.pt-breadcrumb{
  display:flex;align-items:center;gap:8px;
  padding:24px 0;
  font-size:13px;color:var(--pt-text-dim);
}
.pt-breadcrumb a:hover{color:var(--pt-text)}
.pt-sep{color:var(--pt-text-faint)}

/* ---------- 板块信息(list) ---------- */
.pt-board-info{
  display:flex;align-items:center;gap:20px;
  padding:32px;
  background:var(--pt-surface);
  border:1px solid var(--pt-border);
  margin-bottom:32px;
}
.pt-board-icon{
  width:60px;height:60px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--pt-border-dark);
  color:var(--pt-main);
}
.pt-board-text{flex:1}
.pt-board-name{font-family:var(--pt-serif);font-size:28px;font-weight:700;color:var(--pt-text);letter-spacing:.3px}
.pt-board-desc{font-size:14px;color:var(--pt-text-dim);margin:4px 0 12px;font-style:italic}
.pt-board-meta{display:flex;gap:28px;font-size:13px;color:var(--pt-text-dim);flex-wrap:wrap}
.pt-board-meta strong{color:var(--pt-text);font-weight:700;font-variant-numeric:tabular-nums}

/* ---------- 帖子列表(list) ---------- */
.pt-post-list{
  background:var(--pt-bg);
  border-top:1px solid var(--pt-text);
  margin-bottom:28px;
}
.pt-post-list-head{
  display:grid;
  grid-template-columns:1fr 140px 70px 80px 90px;
  gap:12px;
  padding:14px 0;
  font-size:11px;font-weight:600;letter-spacing:1px;
  color:var(--pt-text-faint);
  text-transform:uppercase;
  border-bottom:1px solid var(--pt-border);
}
.pt-post-row{
  display:grid;
  grid-template-columns:1fr 140px 70px 80px 90px;
  gap:12px;
  align-items:center;
  padding:18px 0;
  border-bottom:1px solid var(--pt-border);
  color:var(--pt-text);
  transition:background .15s;
}
.pt-post-row:last-child{border-bottom:none}
.pt-post-row:hover{background:var(--pt-surface)}
.pt-post-title-cell{min-width:0}
.pt-post-title-link{display:flex;align-items:center;gap:8px}
.pt-post-title-text{font-size:15px;font-weight:500;color:var(--pt-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pt-post-title-text:hover{color:var(--pt-main);text-decoration:underline;text-underline-offset:3px}
.pt-post-author{font-size:13px;color:var(--pt-text-dim)}
.pt-post-num{font-size:14px;color:var(--pt-text-dim);text-align:center;font-variant-numeric:tabular-nums}
.pt-post-time{font-size:13px;color:var(--pt-text-faint);font-variant-numeric:tabular-nums}

/* ---------- 分页(CMS) ---------- */
.jv-pagination{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
  padding:24px 0;
  justify-content:center;
}
.jv-page-info{
  font-size:13px;
  color:var(--pt-text-faint);
  font-style:italic;
  margin-right:12px;
  letter-spacing:.3px;
}
.jv-pagination a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:38px;
  height:38px;
  padding:0 12px;
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  background:none;
  border:1px solid transparent;
  color:var(--pt-text-dim);
  transition:all .15s;
  text-decoration:none;
  font-variant-numeric:tabular-nums;
}
.jv-pagination a:hover{
  color:var(--pt-text);
  border-color:var(--pt-border);
}
.jv-pagination a.active{
  color:var(--pt-text);
  border-color:var(--pt-text);
  font-weight:700;
}
.jv-pagination a.disabled{
  color:var(--pt-text-faint);
  border-color:transparent;
  cursor:not-allowed;
  pointer-events:none;
  opacity:.5;
}
.jv-page-dots{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:38px;
  height:38px;
  color:var(--pt-text-faint);
  font-size:14px;
}

/* ---------- 详情页 ---------- */
.pt-detail-title{
  font-family:var(--pt-serif);
  font-size:36px;font-weight:700;line-height:1.3;
  color:var(--pt-text);
  margin-bottom:16px;letter-spacing:.3px;
}
.pt-detail-meta{
  display:flex;gap:24px;flex-wrap:wrap;
  font-size:13px;color:var(--pt-text-dim);
  padding-bottom:20px;margin-bottom:32px;
  border-bottom:1px solid var(--pt-border);
  font-style:italic;
}
.pt-detail-meta span{display:inline-flex;align-items:center;gap:5px}

.pt-post-floor{
  background:var(--pt-bg);
  margin-bottom:0;
  border-bottom:1px solid var(--pt-border);
}
.pt-post-floor-head{
  display:flex;align-items:center;gap:14px;
  padding:20px 0;
}
.pt-post-floor-avatar img{width:44px;height:44px;border-radius:50%;border:1px solid var(--pt-border)}
.pt-post-floor-user{flex:1}
.pt-post-floor-name{font-family:var(--pt-serif);font-size:17px;font-weight:700;color:var(--pt-text)}
.pt-post-floor-role{font-size:12px;color:var(--pt-text-faint)}
.pt-post-floor-num{font-family:var(--pt-serif);font-size:18px;font-weight:700;color:var(--pt-text-faint)}
.pt-post-floor-body{padding:0 0 24px 58px}
.pt-post-floor-content p{margin-bottom:16px;line-height:1.9;font-size:15px;color:var(--pt-text)}
.pt-post-floor-content img{max-width:100%;height:auto;margin:16px 0;border:1px solid var(--pt-border)}
.pt-floor-tag{
  display:inline-block;
  font-size:11px;font-weight:600;letter-spacing:.5px;
  padding:3px 10px;margin-right:8px;
  background:var(--pt-surface-2);color:var(--pt-text);
  border:1px solid var(--pt-border-dark);
}
.pt-post-floor-img{margin:18px 0;border:1px solid var(--pt-border)}
.pt-post-floor-actions{
  display:flex;gap:28px;flex-wrap:wrap;
  margin-top:20px;padding-top:20px;
  border-top:1px solid var(--pt-border);
}
.pt-post-floor-actions a{
  display:inline-flex;align-items:center;gap:5px;
  font-size:13px;color:var(--pt-text-dim);
}
.pt-post-floor-actions a:hover{color:var(--pt-text)}

.pt-best-answer{
  background:var(--pt-surface);
  border-left:3px solid #52c41a;
}

.pt-reply-box{
  background:var(--pt-surface);
  border:1px solid var(--pt-border);
  padding:28px;
  margin-top:32px;
}
.pt-reply-box h3{font-family:var(--pt-serif);font-size:20px;font-weight:700;color:var(--pt-text);margin-bottom:18px;letter-spacing:.3px}
.pt-reply-box textarea{
  width:100%;min-height:130px;resize:vertical;
  background:var(--pt-bg);
  border:1px solid var(--pt-border-dark);
  padding:14px;color:var(--pt-text);font-size:15px;line-height:1.7;
  transition:border-color .2s;
}
.pt-reply-box textarea:focus{border-color:var(--pt-text)}
.pt-reply-box textarea::placeholder{color:var(--pt-text-faint);font-style:italic}
.pt-reply-box-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:16px;flex-wrap:wrap;gap:10px}
.pt-reply-tools{display:flex;gap:2px}
.pt-reply-tool{
  width:34px;height:34px;
  display:flex;align-items:center;justify-content:center;
  background:var(--pt-bg);
  border:1px solid var(--pt-border);
  color:var(--pt-text-dim);cursor:pointer;
  transition:all .15s;
}
.pt-reply-tool:hover{color:var(--pt-text);border-color:var(--pt-border-dark)}

/* ---------- 评论区 ---------- */
.comment-section{margin-top:0}
.comment-form-area{margin-bottom:20px}
.comment-login-notice{
  background:var(--pt-surface);
  border:1px solid var(--pt-border);
}
.comment-list{display:flex;flex-direction:column}
.comment-item{
  display:flex;gap:14px;
  padding:18px 0;
  border-bottom:1px solid var(--pt-border);
}
.comment-item:last-child{border-bottom:none}
.comment-avatar{
  flex-shrink:0;
  width:40px;height:40px;
  border-radius:50%;
  background:var(--pt-text);
  color:#fff;
  font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.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:700;color:var(--pt-text);font-family:var(--pt-serif)}
.comment-reply-to{font-size:12px;color:var(--pt-text-faint)}
.comment-reply-to::before{content:'\2192';margin-right:3px}
.comment-time{font-size:12px;color:var(--pt-text-faint);margin-left:auto;font-style:italic}
.comment-content{font-size:14px;color:var(--pt-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(--pt-text-faint);font-size:12px;
  cursor:pointer;
  transition:all .15s;
}
.comment-reply-btn:hover{color:var(--pt-text)}
.comment-reply-form{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.comment-reply-input{
  width:100%;
  border:1px solid var(--pt-border-dark);
  padding:10px 14px;
  font-size:13px;line-height:1.5;
  resize:vertical;min-height:60px;
  font-family:inherit;
  background:var(--pt-bg);
  color:var(--pt-text);
  transition:border-color .2s;
}
.comment-reply-input:focus{border-color:var(--pt-text)}
.comment-reply-submit{
  align-self:flex-end;
  display:inline-flex;align-items:center;
  height:30px;padding:0 16px;
  border:1px solid var(--pt-text);
  background:var(--pt-text);color:#fff;
  font-size:12px;font-weight:600;
  cursor:pointer;
  transition:all .15s;
}
.comment-reply-submit:hover{background:var(--pt-bg);color:var(--pt-text)}
.comment-reply-submit:disabled{opacity:.6;cursor:not-allowed}
.comment-replies{
  margin-left:54px;
  padding-left:16px;
  border-left:2px solid var(--pt-border);
  display:flex;flex-direction:column;
}
.comment-reply-item{
  display:flex;gap:10px;
  padding:12px 0;
  border-bottom:1px solid var(--pt-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(--pt-text-faint);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:1px solid var(--pt-text);
  background:var(--pt-bg);color:var(--pt-text);
  font-size:13px;font-weight:600;
  cursor:pointer;
  transition:all .15s;
}
.comment-load-more-btn:hover{background:var(--pt-text);color:#fff}
.comment-submit-btn:disabled{opacity:.6;cursor:not-allowed}

/* ---------- 搜索页 ---------- */
.pt-search-hero{
  text-align:center;
  padding:64px 32px;
  margin-bottom:36px;
  background:var(--pt-surface);
  border-bottom:1px solid var(--pt-border);
}
.pt-search-hero h2{font-family:var(--pt-serif);font-size:48px;font-weight:700;color:var(--pt-text);letter-spacing:2px;margin-bottom:28px;line-height:1.2}
.pt-search-big{
  display:flex;gap:0;max-width:640px;margin:0 auto;
  border:1px solid var(--pt-border-dark);
}
.pt-search-big input{
  flex:1;
  background:var(--pt-bg);
  border:none;
  padding:16px 20px;color:var(--pt-text);font-size:16px;
}
.pt-search-big input::placeholder{color:var(--pt-text-faint)}
.pt-search-big button{
  display:inline-flex;align-items:center;gap:6px;
  padding:16px 30px;
  cursor:pointer;
  background:var(--pt-text);
  border:none;color:#fff;
  font-weight:600;letter-spacing:.5px;
  transition:background .2s;
}
.pt-search-big button:hover{background:var(--pt-main)}
.pt-hot-search{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px}
.pt-hot-search-item{
  font-size:13px;padding:6px 16px;
  background:var(--pt-bg);color:var(--pt-text-dim);
  border:1px solid var(--pt-border);cursor:pointer;
  transition:all .15s;
}
.pt-hot-search-item:hover{color:var(--pt-text);border-color:var(--pt-text)}

.pt-search-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--pt-border)}
.pt-filter-label{font-size:13px;color:var(--pt-text-dim);font-weight:600}
.pt-filter-chip{
  font-size:13px;padding:6px 18px;cursor:pointer;
  background:none;
  border:1px solid var(--pt-border);
  color:var(--pt-text-dim);
  transition:all .15s;
}
.pt-filter-chip:hover{color:var(--pt-text);border-color:var(--pt-text)}
.pt-filter-chip.active{
  background:var(--pt-text);
  color:#fff;
  border-color:var(--pt-text);
}

.pt-search-result{
  display:flex;gap:18px;padding:24px 0;
  border-bottom:1px solid var(--pt-border);
  transition:background .15s;
}
.pt-search-result:first-child{border-top:1px solid var(--pt-border)}
.pt-search-result:hover{background:var(--pt-surface)}
.pt-search-result-icon{
  flex-shrink:0;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--pt-border);
  color:var(--pt-main);
}
.pt-search-result-body{flex:1;min-width:0}
.pt-search-result-title{font-family:var(--pt-serif);font-size:18px;font-weight:700;color:var(--pt-text);margin-bottom:6px}
.pt-search-result-title:hover{color:var(--pt-main)}
.pt-search-result-summary{font-size:14px;color:var(--pt-text-dim);line-height:1.7;margin-bottom:8px}
.pt-search-result-meta{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--pt-text-faint)}
.pt-board-tag{color:var(--pt-main);font-weight:600}

/* ---------- 页脚 ---------- */
.pt-footer{
  border-top:2px solid var(--pt-text);
  background:var(--pt-bg);
  margin-top:48px;
}
.pt-footer-inner{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:48px;
  padding:48px 0 32px;
}
.pt-footer-col h4{
  font-family:var(--pt-serif);
  font-size:16px;font-weight:700;letter-spacing:.3px;
  color:var(--pt-text);
  margin-bottom:18px;
}
.pt-footer-col li{margin-bottom:10px}
.pt-footer-col a{font-size:14px;color:var(--pt-text-dim)}
.pt-footer-col a:hover{color:var(--pt-text)}
.pt-footer-bottom{
  text-align:center;
  padding:22px 0;
  font-size:13px;color:var(--pt-text-faint);
  border-top:1px solid var(--pt-border);
  letter-spacing:.5px;
}

/* ---------- Q&A 适配 ---------- */
.qa-wide-hero{
  border-radius:0;
  margin:24px 0;
}
.qa-wide-content{
  border:none;
  border-radius:0;
  box-shadow:none;
  padding:0;
  background:var(--pt-bg);
}
.qa-wide-card{
  background:var(--pt-bg);
  border:1px solid var(--pt-border);
  border-radius:0;
  transition:background .15s;
}
.qa-wide-card:hover{
  background:var(--pt-surface);
  box-shadow:none;
  transform:none;
}
.qa-wide-cat-nav{
  border:none;
  border-radius:0;
  box-shadow:none;
  border-bottom:1px solid var(--pt-border);
}
.qa-wide-pagination{
  border-top:1px solid var(--pt-border);
}
.qa-wide-pagination .jv-pagination a:hover{
  border-color:var(--pt-text);
  color:var(--pt-text);
}
.qa-wide-pagination .jv-pagination a.active{
  background:var(--pt-text);
  border-color:var(--pt-text);
  color:#fff;
}

/* ============================================================
   用户认证页面 (登录/注册/用户中心)
   ============================================================ */
.pt-auth-wrap{
  display:flex;
  justify-content:center;
  padding:60px 0;
}
.pt-auth-box{
  width:100%;
  max-width:440px;
  background:var(--pt-bg);
}
.pt-auth-header{
  text-align:center;
  margin-bottom:36px;
}
.pt-auth-header h1{
  font-family:var(--pt-serif);
  font-size:32px;
  font-weight:700;
  color:var(--pt-text);
  letter-spacing:1px;
  margin-bottom:8px;
}
.pt-auth-header p{
  font-size:14px;
  color:var(--pt-text-faint);
}
.pt-auth-form{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.pt-auth-group{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.pt-auth-group label{
  font-size:13px;
  color:var(--pt-text-dim);
  font-weight:500;
  letter-spacing:.3px;
}
.pt-auth-group input{
  width:100%;
  height:48px;
  padding:0 16px;
  font-size:15px;
  color:var(--pt-text);
  background:var(--pt-surface);
  border:1px solid var(--pt-border-dark);
  border-radius:6px;
  transition:border-color .2s,background .2s;
}
.pt-auth-group input:focus{
  border-color:var(--pt-text);
  background:var(--pt-bg);
}
.pt-auth-submit{
  width:100%;
  height:48px;
  font-size:15px;
  font-weight:600;
  letter-spacing:1px;
  justify-content:center;
  margin-top:8px;
}
.pt-auth-footer{
  text-align:center;
  margin-top:28px;
  font-size:14px;
  color:var(--pt-text-dim);
}
.pt-auth-footer a{
  color:var(--pt-text);
  font-weight:600;
  margin-left:6px;
}
.pt-auth-footer a:hover{
  text-decoration:underline;
}

/* ============================================================
   响应式 - 平板 (max-width:1024px)
   ============================================================ */
@media(max-width:1024px){
  .pt-main{grid-template-columns:1fr;gap:36px}
  .pt-sidebar{order:2}
  .pt-post-list-head,.pt-post-row{grid-template-columns:1fr 120px 60px 70px}
  .pt-post-list-head>div:nth-child(5),.pt-post-row>div:nth-child(5){display:none}
  .pt-footer-inner{grid-template-columns:repeat(2,1fr);gap:36px}
  .pt-section-title{font-size:28px}
  .pt-detail-title{font-size:30px}
}

/* ============================================================
   响应式 - 手机 (max-width:768px)
   ============================================================ */
@media(max-width:768px){
  .pt-container{padding:0 20px}
  .pt-header-inner{height:auto;padding:14px 0;flex-wrap:wrap;gap:12px}
  .pt-search-mini{display:none}
  .pt-mobile-toggle{display:flex}
  .pt-nav{
    order:3;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease;
  }
  .pt-nav.open{max-height:600px}
  .pt-nav-item{padding:14px 0;border-bottom:1px solid var(--pt-border)}
  .pt-logo-text{font-size:20px}
  .pt-section-title{font-size:24px;margin-bottom:20px}
  .pt-detail-title{font-size:24px}
  .pt-search-hero{padding:40px 20px}
  .pt-search-hero h2{font-size:32px;letter-spacing:1px}
  .pt-board-info{flex-wrap:wrap;padding:24px}
  .pt-board-info .pt-btn{width:100%;justify-content:center}
  .pt-post-list-head{display:none}
  .pt-post-row{
    grid-template-columns:1fr;
    gap:6px;padding:16px 0;
  }
  .pt-post-author,.pt-post-num{text-align:left}
  .pt-post-floor-body{padding-left:0}
  .pt-search-big{flex-direction:column}
  .pt-search-big button{justify-content:center}
  .pt-reply-box-bottom{flex-direction:column;align-items:stretch}
  .pt-reply-box-bottom .pt-btn{justify-content:center}
  .pt-footer-inner{grid-template-columns:1fr;gap:28px}
  .pt-langs{position:static;width:100%;grid-template-columns:1fr 1fr}
  .comment-replies{margin-left:0;padding-left:12px}
  .qa-wide-hero{padding:28px 20px}
  .qa-wide-content{padding:0}
  .qa-wide-card{padding:18px 16px}
  .qa-wide-card-side{flex-direction:row;min-width:auto;padding-left:0;border-left:none;border-top:1px solid #f0f0f0;margin-left:0;margin-top:14px;padding-top:14px}
}