/* ============================================================
   AI 资讯 · 响应式样式(轻量、无外部依赖)
   ============================================================ */
:root{
  --accent:#4f46e5;
  --bg:#f7f8fb;
  --card:#ffffff;
  --text:#1f2430;
  --muted:#6b7280;
  --border:#e7e9ef;
  --radius:14px;
  --shadow:0 1px 3px rgba(16,24,40,.06),0 8px 24px rgba(16,24,40,.04);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.muted{color:var(--muted)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:10px 18px;border-radius:10px;font-weight:600}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(12px);-webkit-backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--border);box-shadow:0 1px 12px rgba(16,24,40,.04)}
/* 关键:所有 flex 子项允许收缩(min-width:0),避免多语言文字变长时撑破 / 挤压变形 */
.header-inner{display:flex;align-items:center;gap:14px;height:64px;min-width:0;flex-wrap:nowrap}
.header-inner > *{min-width:0}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;white-space:nowrap;flex:0 0 auto}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#7c3aed);color:#fff;font-weight:900;flex:0 0 auto}
.brand-text{color:var(--text);overflow:hidden;text-overflow:ellipsis}
/* 导航可横向滚动而不换行/撑破,滚动条隐藏 */
.main-nav{display:flex;gap:2px;flex:1 1 auto;min-width:0;flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;-ms-overflow-style:none;-webkit-overflow-scrolling:touch;mask-image:linear-gradient(90deg,#000 0,#000 calc(100% - 18px),transparent 100%)}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{padding:8px 11px;border-radius:9px;color:var(--muted);font-weight:600;transition:.15s;white-space:nowrap;flex:0 0 auto;font-size:14.5px}
.main-nav a:hover{color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,#fff)}
.search-box{display:flex;align-items:center;background:#fff;border:1px solid var(--border);border-radius:999px;padding:4px 6px 4px 13px;flex:0 1 auto;min-width:0;transition:border-color .15s,box-shadow .15s}
.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 12%,transparent)}
.search-box input{border:0;outline:0;background:transparent;width:clamp(80px,11vw,160px);min-width:0;font-size:14px}
.search-box button{border:0;background:transparent;cursor:pointer;font-size:16px;padding:4px 8px;border-radius:999px;flex:0 0 auto}
.nav-toggle{display:none;border:0;background:transparent;font-size:22px;cursor:pointer;flex:0 0 auto;padding:4px 6px;border-radius:8px}
.nav-toggle:hover{background:color-mix(in srgb,var(--accent) 8%,#fff);color:var(--accent)}

/* 机器翻译提示 */
.mt-notice{margin:0 0 18px;padding:9px 14px;border:1px solid color-mix(in srgb,var(--accent) 20%,var(--border));border-left:3px solid var(--accent);border-radius:0 10px 10px 0;background:color-mix(in srgb,var(--accent) 5%,#fff);color:var(--muted);font-size:13px;line-height:1.6}

/* ---------- Main ---------- */
.site-main{padding:28px 20px 56px;min-height:60vh}
.section-title{font-size:20px;margin:8px 0 16px;position:relative;padding-left:12px}
.section-title::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:4px;border-radius:3px;background:var(--accent)}

/* Hero */
.hero{margin-bottom:28px}
.hero-card{display:grid;grid-template-columns:1.3fr 1fr;gap:0;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.hero-thumb{position:relative;min-height:300px;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:grid;place-items:center}
.hero-body{padding:30px}
.hero-body h1{font-size:30px;line-height:1.3;margin:0 0 12px}
.hero-body p{font-size:16px;margin:0 0 18px}

/* Cards */
.home-layout{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .18s,box-shadow .18s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(16,24,40,.1)}
.card-thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:grid;place-items:center}
.card-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-body h3{margin:0;font-size:17px;line-height:1.45}
.card-body h3 a:hover{color:var(--accent)}
.card-body p{margin:0;font-size:14px}
.ph{font-size:34px;font-weight:900;color:rgba(255,255,255,.85)}
.chip{position:absolute;left:10px;top:10px;background:rgba(0,0,0,.45);color:#fff;font-size:12px;padding:3px 10px;border-radius:999px;backdrop-filter:blur(4px)}
.meta{display:flex;gap:6px;align-items:center;color:var(--muted);font-size:13px;flex-wrap:wrap}
.meta span{white-space:nowrap}

/* Sidebar */
.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:84px}
.widget{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.widget-title{margin:0 0 14px;font-size:16px;border-left:4px solid var(--accent);padding-left:10px}
.rank-list{list-style:none;margin:0;padding:0;counter-reset:r;display:flex;flex-direction:column;gap:12px}
.rank-list li{display:flex;align-items:baseline;gap:10px;font-size:14px}
.rank-list .rank{flex:0 0 22px;height:22px;display:grid;place-items:center;background:var(--accent);color:#fff;border-radius:6px;font-size:12px;font-weight:700}
.rank-list a{flex:1;color:var(--text)}
.rank-list a:hover{color:var(--accent)}
.rank-list em{color:var(--muted);font-style:normal;font-size:12px}
.cat-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.cat-list li{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--border)}
.cat-list li:last-child{border-bottom:0}
.cat-list a:hover{color:var(--accent)}
.cat-list span{color:var(--muted);font-size:13px}

/* Pager */
.pager{display:flex;align-items:center;justify-content:center;gap:16px;margin:34px 0 10px}
.pager-btn{background:var(--card);border:1px solid var(--border);padding:9px 18px;border-radius:10px;font-weight:600}
.pager-btn:hover{border-color:var(--accent);color:var(--accent)}
.pager-info{color:var(--muted);font-size:14px}
.empty{text-align:center;color:var(--muted);padding:40px 0}

/* ---------- Article ---------- */
.article{max-width:780px;margin:0 auto}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a:hover{color:var(--accent)}
.article-head h1{font-size:32px;line-height:1.3;margin:0 0 14px}
.article-meta{margin-bottom:22px}
.article-cover{width:100%;border-radius:var(--radius);margin-bottom:8px;aspect-ratio:16/9;object-fit:cover;background:linear-gradient(135deg,#6366f1,#8b5cf6)}
.cover-credit{font-size:12px;color:var(--muted);text-align:right;margin:0 0 22px}
.article-content{font-size:17px}
.article-content p{margin:0 0 18px}
.article-content h2,.article-content h3{margin:28px 0 12px;line-height:1.4}
.article-content img{border-radius:10px;margin:18px 0}
.article-content a{color:var(--accent);text-decoration:underline}
.article-content blockquote{border-left:4px solid var(--accent);margin:18px 0;padding:8px 18px;background:color-mix(in srgb,var(--accent) 6%,#fff);border-radius:0 10px 10px 0;color:#374151}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{background:color-mix(in srgb,var(--accent) 10%,#fff);color:var(--accent);padding:5px 12px;border-radius:999px;font-size:13px;font-weight:600}
.related{margin-top:46px;max-width:980px;margin-left:auto;margin-right:auto}

/* Category / search head */
.cat-head{margin-bottom:22px}
.cat-head h1{font-size:28px;margin:0 0 6px}

/* ---------- Footer ---------- */
.site-footer{background:#0f1117;color:#cbd2e0;margin-top:40px}
.footer-inner{display:flex;justify-content:space-between;gap:30px;padding:38px 20px;flex-wrap:wrap;max-width:var(--maxw);margin:0 auto}
.footer-inner strong{color:#fff;font-size:18px}
.footer-nav{display:flex;flex-wrap:wrap;gap:8px 18px}
.footer-nav a{color:#cbd2e0}
.footer-nav a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid #1f2330;padding:16px 20px;font-size:13px;max-width:var(--maxw);margin:0 auto}

/* ---------- 404 ---------- */
.notfound{text-align:center;padding:80px 20px}

/* ---------- AI 工具库页 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 22px}
.chip-btn{border:1px solid var(--border);background:#fff;color:var(--muted);padding:7px 16px;border-radius:999px;font-weight:600;cursor:pointer;transition:.15s;font-size:14px}
.chip-btn:hover{color:var(--accent);border-color:var(--accent)}
.chip-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.tool-card .card-thumb{min-height:110px}
.tool-card .card-body h3 a{color:var(--text)}
.tool-card .meta{margin:4px 0 12px}
.btn.small{padding:7px 14px;font-size:14px;align-self:flex-start}
.faq{display:flex;flex-direction:column;gap:10px;max-width:880px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 18px;box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;font-weight:700;font-size:16px;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"Q";display:inline-grid;place-items:center;width:22px;height:22px;background:var(--accent);color:#fff;border-radius:6px;font-size:12px;font-weight:800;margin-right:10px;vertical-align:middle}
.faq-item p{margin:10px 0 0;color:#374151}
.small{font-size:13px}
.notfound h1{font-size:80px;margin:0;color:var(--accent)}

/* ---------- Responsive ---------- */
/* 中等屏:收紧间距与搜索框,给多语言导航留出空间 */
@media (max-width:1180px){
  .header-inner{gap:10px}
  .main-nav a{padding:8px 9px;font-size:14px}
  .search-box input{width:clamp(70px,9vw,120px)}
}
@media (max-width:980px){
  .home-layout{grid-template-columns:1fr}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar .widget{flex:1;min-width:240px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .hero-card{grid-template-columns:1fr}
  .hero-thumb{min-height:200px}
  .brand-text{display:none}         /* 窄屏只留 Logo 图形,避免品牌名挤压导航 */
}
@media (max-width:760px){
  .search-box{display:none}          /* 手机端搜索收进顶部简化,避免换行变形 */
}
@media (max-width:640px){
  .header-inner{height:58px;gap:8px;padding:0}
  .main-nav{display:none;position:absolute;top:58px;left:0;right:0;flex-direction:column;background:#fff;
    border-bottom:1px solid var(--border);padding:8px;box-shadow:0 12px 24px rgba(16,24,40,.1);
    mask-image:none;overflow-x:visible;max-height:70vh;overflow-y:auto}
  .main-nav.open{display:flex}
  .main-nav a{padding:10px 12px}
  .nav-toggle{display:block}
  .card-grid{grid-template-columns:1fr}
  .hero-body h1{font-size:23px}
  .article-head h1{font-size:25px}
  .article-content{font-size:16px}
}

/* 多语言切换已按需求移除：本站仅保留简体中文 */

/* ---------- 广告位 ---------- */
.ad-slot{margin:1rem 0;text-align:center;overflow:hidden;line-height:0}
.ad-slot > :first-child{margin:0 auto}
.ad-slot ins,.ad-slot iframe,.ad-slot > div{max-width:100%}
.ad-header{margin:1rem auto 0}
.ad-footer{margin:1.25rem auto 0}
.ad-sidebar{margin:1rem auto 0}

/* ============================================================
   新增：单语站扩展 + 关注列表 + 后台管理
   ============================================================ */
.main-nav a.active{color:var(--accent);background:color-mix(in srgb,var(--accent) 9%,#fff)}
.admin-link{flex:0 0 auto;font-size:13px;font-weight:700;color:var(--muted);border:1px solid var(--border);padding:6px 12px;border-radius:999px;white-space:nowrap}
.admin-link:hover{color:var(--accent);border-color:var(--accent)}
.hero-thumb .ph,.card-thumb .ph{font-size:30px;letter-spacing:2px}
.article-cover{display:grid;place-items:center;color:#fff;font-size:20px;font-weight:800}
.article-byline{margin-top:34px;border-top:1px solid var(--border);padding-top:16px}
.ok{color:#059669;font-weight:600}
.err{color:#dc2626;font-weight:600}
.btn.small{padding:7px 14px;font-size:14px}
.btn.ghost{background:#fff;color:var(--accent);border:1px solid var(--border)}
.btn.ghost:hover{border-color:var(--accent)}
.btn.btn-block{display:block;width:100%;border:0;cursor:pointer;text-align:center}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:20px}
.panel h3{margin:0 0 12px;font-size:17px}
.panel-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.data-table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;font-size:14px}
.data-table th,.data-table td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}
.data-table th{background:#fafbfe;color:var(--muted);font-weight:700;white-space:nowrap}
.data-table tr:last-child td{border-bottom:0}
.data-table a:hover{color:var(--accent)}
.data-table .small{font-size:12px}
.data-table .empty{text-align:center;color:var(--muted);padding:30px}
.row-actions{white-space:nowrap}
.row-actions button,.data-table button{border:1px solid var(--border);background:#fff;color:var(--text);border-radius:7px;padding:4px 9px;font-size:12px;cursor:pointer;margin:2px 3px 2px 0}
.row-actions button:hover{border-color:var(--accent);color:var(--accent)}
.row-actions button.danger:hover{border-color:#dc2626;color:#dc2626}
.mt-notice{margin:0 0 18px;padding:10px 14px;border:1px solid color-mix(in srgb,var(--accent) 20%,var(--border));border-left:3px solid var(--accent);border-radius:0 10px 10px 0;background:color-mix(in srgb,var(--accent) 5%,#fff);color:var(--muted);font-size:13px;line-height:1.7}
.mt-notice a{color:var(--accent);text-decoration:underline}
.article-content table{margin:16px 0}

/* ---------- 后台 ---------- */
.admin-body{background:#f5f6fa}
.admin-login-body{background:linear-gradient(135deg,#eef0ff,#f7f8fb);min-height:100vh;display:grid;place-items:center}
.login-wrap{width:min(420px,92vw)}
.login-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:30px;box-shadow:0 16px 40px rgba(16,24,40,.08);display:flex;flex-direction:column;gap:14px}
.login-card label,.form-grid label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700;color:var(--muted)}
.login-card input,.form-grid input,.form-grid select,.form-grid textarea{border:1px solid var(--border);border-radius:9px;padding:9px 11px;font-size:14px;font-family:inherit;color:var(--text);background:#fff;outline:0;width:100%}
.login-card input:focus,.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 12%,transparent)}
.login-card .err{min-height:18px;margin:0;font-size:13px}
.admin-top{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}
.admin-top-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.admin-top-actions{display:flex;gap:8px}
.admin-shell{display:grid;grid-template-columns:212px minmax(0,1fr);max-width:1400px;margin:0 auto;min-height:calc(100vh - 62px)}
.admin-side{background:#fff;border-right:1px solid var(--border);padding:18px 12px;display:flex;flex-direction:column;justify-content:space-between}
.admin-side nav{display:flex;flex-direction:column;gap:4px}
.admin-side button{text-align:left;border:0;background:transparent;padding:11px 14px;border-radius:9px;font-size:14px;font-weight:600;color:var(--muted);cursor:pointer;font-family:inherit}
.admin-side button:hover{background:#f4f5fb;color:var(--accent)}
.admin-side button.active{background:color-mix(in srgb,var(--accent) 10%,#fff);color:var(--accent)}
.admin-side-foot{padding:12px 14px}
.admin-main{padding:26px 28px 60px;min-width:0}
.admin-title{font-size:22px;margin:0 0 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:20px}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:6px}
.stat-card span{color:var(--muted);font-size:13px}
.stat-card strong{font-size:24px;color:var(--accent)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.form-grid .span2{grid-column:1 / -1}
.form-grid textarea{resize:vertical;line-height:1.6}
.form-actions{display:flex;gap:10px;align-items:center}
.form-actions .btn{border:0;cursor:pointer}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.code-block{display:block;background:#0f1117;color:#d7e0f5;border-radius:10px;padding:14px 16px;font-size:13px;line-height:1.7;overflow-x:auto;white-space:pre-wrap;word-break:break-all;font-family:ui-monospace,Consolas,monospace}
.collect-result{border-left:4px solid #10b981}
.toast{position:fixed;right:24px;bottom:24px;z-index:99;background:#111827;color:#fff;padding:12px 18px;border-radius:10px;box-shadow:0 12px 30px rgba(0,0,0,.2);opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s;font-size:14px}
.toast.show{opacity:1;transform:translateY(0)}
.toast.err{background:#b91c1c}
@media (max-width:900px){
  .admin-shell{grid-template-columns:1fr}
  .admin-side{border-right:0;border-bottom:1px solid var(--border);padding:10px}
  .admin-side nav{flex-direction:row;overflow-x:auto}
  .admin-side button{white-space:nowrap}
  .admin-side-foot{display:none}
  .admin-main{padding:20px 14px}
  .panel-row,.two-col,.form-grid{grid-template-columns:1fr}
  .data-table{display:block;overflow-x:auto}
}

/* ---------- 多平台关注列表 ---------- */
.platform-badge{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:20px;padding:0 7px;border-radius:5px;color:#fff;font-size:11px;font-weight:700;letter-spacing:.02em;vertical-align:middle;white-space:nowrap}
.platform-group{margin:26px 0}
.platform-group h2.section-title{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:19px;margin-bottom:12px}
.platform-group h2 .small{font-weight:400}
.follow-url{max-width:420px;overflow-wrap:anywhere;word-break:break-all}
.platform-chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}
.platform-chip{border:1px solid var(--border);background:#fff;border-radius:999px;padding:6px 12px;font-size:13px;display:inline-flex;align-items:center;gap:6px;transition:.15s}
button.platform-chip{cursor:pointer}
.platform-chip:hover{border-color:var(--accent);box-shadow:0 2px 8px rgba(79,70,229,.12)}
.platform-chip.active{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,#fff)}
.platform-help{background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.7}
.platform-help code{background:#eef2ff;color:#3730a3;padding:1px 5px;border-radius:4px}
.feed-test{border:1px solid var(--border);border-radius:10px;padding:12px 14px;margin-top:10px;background:#fff}
.feed-test .item{display:flex;gap:8px;align-items:flex-start;padding:6px 0;border-bottom:1px dashed var(--border);font-size:13px}
.feed-test .item:last-child{border-bottom:0}
.feed-test .item span.t{flex:1;overflow-wrap:anywhere}
.feed-test .pass{color:#059669;font-weight:700}
.feed-test .fail{color:#b45309;font-weight:700}
.min-hint{color:var(--muted);font-size:12px;margin-top:4px}
/* 外部提交关注源 */
.submit-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:linear-gradient(135deg,#f5f3ff,#eef2ff);border:1px solid #ddd6fe}
.submit-bar p{margin:4px 0 0}
.submit-bar .btn{flex:0 0 auto}
.submit-result{padding-left:20px;line-height:2}
.submit-result li{font-size:14px}
.submit-page-form label{display:flex;flex-direction:column;gap:6px}
@media(max-width:640px){.submit-bar{flex-direction:column;align-items:flex-start}}