/*
Theme Name: GlobalTrade
Theme URI: https://example.com/globaltrade
Author: Your Name
Author URI: https://example.com
Description: 全球贸易资讯平台 · 三栏新闻流主题，含阅读进度、工具条与广告位。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: globaltrade
Tags: news, three-columns, custom-menu, featured-images
*/

/* ================= 基础 ================= */
:root{
  --ink:#141a22;
  --ink-2:#2b3441;
  --body:#4a5563;
  --muted:#7a8492;
  --faint:#a8b0bb;
  --line:#dde2e8;
  --line-soft:#eaedf1;
  --bg:#f5f6f8;
  --bg-deep:#eaedf1;
  --navy:#12293f;
  --navy-dark:#0a1a2a;
  --navy-mid:#1c3a56;
  --navy-soft:#e9eef3;
  --accent:#7a2e2e;
  --accent-soft:#f2e9e7;
  --gold:#7d6420;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--sans);
  color:var(--ink);background:#fff;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow:hidden;font-size:14px;
}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;border:none;background:none;outline:none;cursor:pointer}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
.screen-reader-text{
  position:absolute!important;width:1px;height:1px;
  overflow:hidden;clip:rect(1px,1px,1px,1px);
}

/* ================= 顶部第一行 ================= */
.header-top{
  height:58px;display:flex;align-items:center;
  padding:0 28px;
  border-bottom:2px solid var(--navy);
  background:#fff;position:relative;z-index:10;
}
.logo{
  display:flex;align-items:center;gap:11px;
  font-size:15px;font-weight:800;letter-spacing:1.2px;
  flex-shrink:0;color:var(--navy-dark);
  text-transform:uppercase;
}
.logo-dot{
  width:22px;height:22px;background:var(--navy);
  position:relative;border:1px solid var(--navy-dark);
  flex-shrink:0;
}
.logo-dot::after{
  content:"";position:absolute;inset:5px;
  border:1.5px solid rgba(255,255,255,.9);
}
.header-nav{display:flex;gap:0;margin-left:40px;height:58px}
.header-nav a,.header-nav .menu-item{
  display:flex;align-items:center;
}
.header-nav a{
  padding:0 18px;font-size:13.5px;
  color:var(--body);transition:color .15s;
  white-space:nowrap;font-weight:500;letter-spacing:.5px;
  border-bottom:2px solid transparent;
  margin-bottom:-2px;height:58px;
}
.header-nav a:hover{color:var(--navy-dark)}
.header-nav .current-menu-item > a,
.header-nav .current_page_item > a{
  color:var(--navy-dark);font-weight:700;
  border-bottom-color:var(--navy);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.search{
  display:flex;align-items:center;gap:8px;
  height:36px;padding:0 14px;
  background:#fff;border:1px solid var(--line);
  transition:border-color .15s, box-shadow .15s;
}
.search:focus-within{border-color:var(--navy);box-shadow:0 0 0 3px rgba(18,41,63,.06)}
.search svg{width:14px;height:14px;stroke:var(--muted);stroke-width:2;fill:none;flex-shrink:0}
.search input{width:170px;font-size:13px;color:var(--ink)}
.search input::placeholder{color:var(--faint)}

/* ================= 顶部第二行：栏目条 ================= */
.cat-strip{
  height:44px;display:flex;align-items:center;
  padding:0 28px;
  border-bottom:1px solid var(--line);
  background:var(--bg);overflow-x:auto;
  scrollbar-width:none;flex-shrink:0;
}
.cat-strip::-webkit-scrollbar{display:none}
.cat-strip-inner{display:flex;align-items:center;gap:0;white-space:nowrap}
.cat-strip a{
  padding:6px 13px;font-size:12.5px;
  color:var(--body);transition:background .15s,color .15s;
  white-space:nowrap;letter-spacing:.3px;font-weight:500;
}
.cat-strip a:hover{color:var(--navy);background:rgba(18,41,63,.05)}
.cat-strip .current-cat > a,
.cat-strip .active{
  color:#fff;background:var(--navy);font-weight:600;
}
.cat-strip .sep{width:1px;height:14px;background:var(--line);margin:0 10px;flex-shrink:0}

/* ================= 三栏主体 ================= */
.app{
  display:grid;
  grid-template-columns:minmax(260px,0.62fr) 1.45fr 190px;
  height:calc(100vh - 102px);
  overflow:hidden;background:#fff;
}

/* --- 左栏 --- */
.feed{
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  overflow:hidden;background:#fff;
}
.filter-bar{
  display:flex;align-items:center;gap:6px;
  padding:12px 16px;border-bottom:1px solid var(--line-soft);
  background:var(--bg);flex-wrap:wrap;flex-shrink:0;
}
.filter-bar .filter-label{
  font-size:11.5px;color:var(--muted);letter-spacing:.3px;
}
.feed-list{
  flex:1;overflow-y:auto;
  scrollbar-width:thin;scrollbar-color:#c8ced6 transparent;
}
.feed-list::-webkit-scrollbar{width:5px}
.feed-list::-webkit-scrollbar-thumb{background:#c8ced6}
.feed-list::-webkit-scrollbar-thumb:hover{background:#aab2bd}

.feed-item{
  padding:15px 18px;
  border-bottom:1px solid var(--line-soft);
  cursor:pointer;transition:background .15s;
  border-left:3px solid transparent;
  position:relative;
}
.feed-item:hover{background:var(--bg)}
.feed-item.active{background:var(--navy-soft);border-left-color:var(--navy)}
.feed-item.flash{animation:flash 1.2s ease 2}
@keyframes flash{0%,100%{background:transparent}50%{background:#f7f0e0}}
.feed-item .row1{display:flex;align-items:center;gap:8px;margin-bottom:7px}
.feed-item .src{
  font-size:10.5px;font-weight:700;color:var(--navy);
  letter-spacing:.6px;position:relative;padding-left:9px;
}
.feed-item .src::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:10px;background:var(--navy);
  transform:translateY(-50%);
}
.feed-item .time{
  font-size:10.5px;color:var(--muted);margin-left:auto;
  font-variant-numeric:tabular-nums;white-space:nowrap;letter-spacing:.2px;
}
.feed-item h4{
  font-size:13.5px;font-weight:500;line-height:1.55;
  color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;letter-spacing:.1px;
}
.feed-item.active h4{font-weight:600;color:var(--navy-dark)}
.feed-item .tags{margin-top:8px;display:flex;gap:6px;flex-wrap:wrap}
.feed-item .tag{
  font-size:10px;padding:2px 8px;
  background:var(--bg-deep);color:var(--body);
  letter-spacing:.2px;font-weight:500;
}
.feed-item .tag.hot{background:var(--accent-soft);color:var(--accent);font-weight:600}

/* --- 中栏：阅读区 --- */
.reader{
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;overflow:hidden;background:#fff;
  position:relative;
}
.reader-empty{
  flex:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  color:var(--muted);gap:16px;padding:40px;text-align:center;
}
.reader-empty svg{width:40px;height:40px;stroke:#c8ced6;stroke-width:1.3;fill:none}
.reader-empty p{font-size:13px;letter-spacing:.5px}

.reader-content{display:none;flex-direction:column;height:100%}
.reader-content.show{display:flex}

.reader-progress{
  height:2px;background:var(--line-soft);
  position:relative;flex-shrink:0;
}
.reader-progress-bar{
  position:absolute;left:0;top:0;bottom:0;
  width:0%;background:var(--navy);transition:width .1s linear;
}
.reader-head{
  padding:30px 38px 24px;
  border-bottom:1px solid var(--line);flex-shrink:0;
}
.reader-meta{
  display:flex;align-items:center;gap:10px;
  font-size:12px;color:var(--muted);
  margin-bottom:16px;letter-spacing:.2px;flex-wrap:wrap;
}
.reader-meta .src{color:var(--navy);font-weight:700;letter-spacing:.6px}
.reader-meta .dot{width:3px;height:3px;background:var(--faint);border-radius:50%}
.reader-meta .read-time{display:inline-flex;align-items:center;gap:5px}
.reader-meta .read-time svg{width:12px;height:12px;stroke:currentColor;stroke-width:1.8;fill:none}
.reader-head h2{
  font-size:25px;font-weight:700;line-height:1.45;
  letter-spacing:-.4px;color:var(--ink);margin-bottom:20px;
}
.reader-tools{
  display:flex;align-items:center;gap:6px;
  padding-top:16px;border-top:1px solid var(--line-soft);flex-wrap:wrap;
}
.reader-tools .tool-btn{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 12px;
  font-size:12px;color:var(--body);
  background:var(--bg);border:1px solid transparent;
  transition:.15s;letter-spacing:.2px;
  font-family:inherit;font-weight:500;
}
.reader-tools .tool-btn:hover{color:var(--navy);border-color:var(--line);background:#fff}
.reader-tools .tool-btn svg{width:13px;height:13px;stroke:currentColor;stroke-width:1.9;fill:none}
.reader-tools .tool-btn.active{color:var(--accent);background:var(--accent-soft);border-color:var(--accent-soft)}
.reader-tools .tool-divider{width:1px;height:16px;background:var(--line);margin:0 4px}

.reader-body{
  flex:1;overflow-y:auto;
  padding:34px 38px 80px;
  scrollbar-width:thin;scrollbar-color:#c8ced6 transparent;
  font-size:16.5px;line-height:1.85;color:var(--ink-2);
  max-width:780px;letter-spacing:.15px;
}
.reader-body::-webkit-scrollbar{width:6px}
.reader-body::-webkit-scrollbar-thumb{background:#c8ced6}
.reader-body::-webkit-scrollbar-thumb:hover{background:#aab2bd}
.reader-body p{margin-bottom:24px}
.reader-body p:last-child{margin-bottom:0}
.reader-body .lead{
  font-size:17.5px;line-height:1.75;color:var(--ink);
  font-weight:500;padding-left:18px;
  border-left:3px solid var(--navy);margin-bottom:32px;
}
.reader-body blockquote{
  margin:28px 0;padding:20px 24px;
  background:var(--bg);border-left:3px solid var(--accent);
  font-size:15.5px;line-height:1.8;color:var(--body);
}
.reader-body blockquote cite{
  display:block;margin-top:12px;font-size:12.5px;
  color:var(--muted);font-style:normal;letter-spacing:.3px;
}
.reader-body h2,
.reader-body h3{
  font-size:17px;font-weight:700;color:var(--ink);
  margin:32px 0 16px;letter-spacing:-.1px;
}
.reader-body img{max-width:100%;height:auto;margin:20px 0}
.reader-foot{
  flex-shrink:0;padding:14px 38px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;gap:16px;
  font-size:12px;color:var(--muted);
  background:var(--bg);letter-spacing:.2px;
}
.reader-foot .key{
  display:inline-flex;align-items:center;gap:3px;
  padding:2px 8px;background:#fff;border:1px solid var(--line);
  font-size:11px;font-family:var(--mono);color:var(--body);
}
.reader-foot .foot-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.reader-foot .foot-right a:hover{color:var(--navy)}

/* --- 右栏：广告 --- */
.ads{
  overflow-y:auto;padding:16px 14px;
  background:var(--bg);
  scrollbar-width:thin;scrollbar-color:#c8ced6 transparent;
}
.ads::-webkit-scrollbar{width:4px}
.ads::-webkit-scrollbar-thumb{background:#c8ced6}

.ad{
  display:block;overflow:hidden;
  background:#fff;border:1px solid var(--line);
  margin-bottom:16px;position:relative;
  transition:border-color .2s, box-shadow .2s;
}
.ad:hover{border-color:var(--navy-mid);box-shadow:0 2px 8px rgba(18,41,63,.06)}
.ad-label{
  position:absolute;top:0;right:0;
  font-size:9px;font-weight:500;color:var(--muted);
  padding:3px 8px;background:#fff;
  border-left:1px solid var(--line);
  border-bottom:1px solid var(--line);
  letter-spacing:1.5px;z-index:2;
}
.ad-1 .ad-img{
  height:96px;background:var(--navy);
  display:grid;place-items:center;position:relative;
  border-bottom:2px solid var(--navy-dark);
}
.ad-1 .ad-img::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
}
.ad-1 .ad-img svg{
  width:30px;height:30px;stroke:#fff;stroke-width:1.3;fill:none;
  opacity:.6;position:relative;z-index:2;
}
.ad-1 .ad-body{padding:14px 15px}
.ad-1 .ad-body h5{font-size:13px;font-weight:600;color:var(--ink);line-height:1.45;letter-spacing:.2px}
.ad-1 .ad-body p{margin-top:7px;font-size:11.5px;color:var(--muted);line-height:1.55}

.ad-2{padding:16px 15px}
.ad-2 .ad-tag{
  font-size:10px;font-weight:700;color:var(--gold);
  letter-spacing:2px;margin-bottom:9px;padding-bottom:8px;
  border-bottom:1px solid var(--line-soft);
}
.ad-2 h5{font-size:13px;font-weight:600;line-height:1.5;color:var(--ink);letter-spacing:.2px}
.ad-2 p{margin-top:8px;font-size:11.5px;color:var(--muted);line-height:1.6}

.ad-3{
  height:90px;display:flex;align-items:center;justify-content:center;
  background:var(--accent);color:#fff;position:relative;
  border-bottom:2px solid #5a1e1e;
}
.ad-3::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;
}
.ad-3 .ad-3-inner{text-align:center;position:relative;z-index:2}
.ad-3 .ad-3-inner b{display:block;font-size:15px;letter-spacing:1.2px;font-weight:600}
.ad-3 .ad-3-inner span{font-size:10.5px;opacity:.75;display:block;margin-top:6px;letter-spacing:.6px}
.ad-3.ad-navy{background:var(--navy-mid);border-bottom-color:var(--navy-dark)}
.ad img{width:100%;height:auto;display:block}

/* ================= 单篇文章页（single.php） ================= */
.single-wrap{
  min-height:calc(100vh - 102px);
  background:#fff;overflow-y:auto;
}
.single-inner{
  max-width:820px;margin:0 auto;
  padding:44px 32px 90px;
}
.single-back{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--muted);margin-bottom:24px;
  transition:color .15s;
}
.single-back:hover{color:var(--navy)}
.single-meta{
  display:flex;align-items:center;gap:10px;
  font-size:12.5px;color:var(--muted);margin-bottom:16px;flex-wrap:wrap;
}
.single-meta .src{color:var(--navy);font-weight:700}
.single-title{
  font-size:30px;font-weight:700;line-height:1.4;
  letter-spacing:-.5px;margin-bottom:26px;
}
.single-thumb{
  margin:0 0 30px;border:1px solid var(--line);
}
.single-body{
  font-size:17px;line-height:1.9;color:var(--ink-2);
}
.single-body p{margin-bottom:24px}
.single-body h2,.single-body h3{
  font-size:20px;font-weight:700;color:var(--ink);
  margin:36px 0 18px;
}
.single-body img{margin:24px 0}
.single-body blockquote{
  margin:28px 0;padding:20px 24px;
  background:var(--bg);border-left:3px solid var(--accent);
  font-size:16px;line-height:1.8;color:var(--body);
}
.single-body a{color:var(--navy);text-decoration:underline;text-underline-offset:3px}

/* ================= 响应式 ================= */
@media (max-width:1200px){
  .app{grid-template-columns:minmax(240px,0.6fr) 1.4fr 180px}
}
@media (max-width:1100px){
  .app{grid-template-columns:minmax(220px,0.6fr) 1.4fr 170px}
  .reader-head{padding:26px 30px 20px}
  .reader-head h2{font-size:23px}
  .reader-body{padding:28px 30px 72px;font-size:16px}
  .reader-foot{padding:12px 30px}
}
@media (max-width:900px){
  .header-nav{display:none}
  .search input{width:100px}
  .app{grid-template-columns:1fr;height:auto;min-height:calc(100vh - 102px)}
  .ads{display:none}
  .feed{border-right:none}
  .reader{display:none}
  .reader.mobile-show{
    display:flex;position:fixed;
    top:102px;left:0;right:0;bottom:0;
    background:#fff;z-index:15;
  }
  body{overflow:auto}
}
@media (max-width:480px){
  .logo{font-size:13.5px;letter-spacing:.8px}
  .logo-dot{width:20px;height:20px}
  .search{display:none}
  .header-top{padding:0 18px;height:54px}
  .cat-strip{padding:0 18px;height:40px}
  .filter-bar{padding:10px 12px}
  .feed-item{padding:13px 14px}
  .reader-head{padding:22px 22px 18px}
  .reader-head h2{font-size:20px}
  .reader-body{padding:24px 22px 64px;font-size:16px}
  .reader-body .lead{font-size:16.5px}
  .reader-foot{padding:12px 22px;gap:10px;flex-wrap:wrap}
  .reader-foot .foot-right{margin-left:0;width:100%}
  .single-title{font-size:22px}
  .single-inner{padding:28px 20px 64px}
}