/* 云商金桥 · 帮助中心 */
:root{
  --primary:#1E40AF; --primary-light:#3B82F6; --accent:#F97316;
  --dark:#0F172A; --text:#334155; --text-light:#64748B;
  --bg:#FFFFFF; --bg-light:#F8FAFC; --border:#E2E8F0;
  --radius:14px; --shadow:0 10px 30px rgba(15,23,42,.07);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--bg-light);color:var(--text);line-height:1.78;-webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.topbar-inner{max-width:1200px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--dark);font-weight:800}
.brand:hover{text-decoration:none}
.brand-logo{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--primary-light))}
.brand small{display:block;font-size:11px;color:var(--text-light);font-weight:500;line-height:1.4}
.topnav{display:flex;gap:18px;font-size:14px;flex-wrap:wrap}
.topnav a{color:var(--text)}
.topnav a:hover{color:var(--primary)}

/* 首页 */
.home{max-width:1200px;margin:0 auto;padding:34px 24px 60px}
.hero{background:linear-gradient(135deg,#EFF6FF,#FFFFFF 60%,#FFF7ED);border:1px solid var(--border);border-radius:22px;padding:48px 44px;box-shadow:var(--shadow)}
.hero h1{font-size:40px;line-height:1.2;color:var(--dark);letter-spacing:-.8px}
.hero p{margin:14px 0 22px;font-size:16px;color:var(--text-light);max-width:760px}
.hero p strong{color:var(--primary)}
.search-box{position:relative;max-width:620px}
.search-box input{width:100%;padding:14px 18px;border:1px solid var(--border);border-radius:12px;font-size:15px;outline:none;background:#fff;color:var(--text);box-shadow:0 4px 14px rgba(15,23,42,.05)}
.search-box input:focus{border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.results{position:absolute;left:0;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 18px 40px rgba(15,23,42,.14);max-height:420px;overflow:auto;z-index:40}
.results a{display:block;padding:11px 16px;border-bottom:1px solid var(--border);color:var(--text)}
.results a:last-child{border-bottom:0}
.results a:hover{background:var(--bg-light);text-decoration:none}
.results b{display:block;color:var(--dark);font-size:14.5px}
.results span{display:block;font-size:12.5px;color:var(--text-light);margin-top:2px}
.results .none{padding:14px 16px;font-size:14px;color:var(--text-light)}
.hero-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 19px;border-radius:9px;font-weight:600;font-size:14.5px}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#EA580C}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--border)}
.btn-ghost:hover{background:#EFF6FF}
.block{margin-top:44px}
.block h2{font-size:23px;color:var(--dark);margin-bottom:16px}
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);transition:.2s;color:var(--text)}
.cat-card:hover{border-color:var(--primary-light);transform:translateY(-2px);text-decoration:none}
.cat-card b{display:block;font-size:16.5px;color:var(--dark)}
.cat-card span{display:block;font-size:13px;color:var(--text-light);margin-top:4px}
.cat-card i{display:block;font-style:normal;font-size:13px;color:var(--primary);margin-top:10px}
.recent{list-style:none}
.recent li{display:flex;align-items:baseline;gap:12px;padding:11px 2px;border-bottom:1px dashed var(--border)}
.recent a{color:var(--text);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.recent a:hover{color:var(--primary)}
.recent time{font-size:12.5px;color:var(--text-light);flex:none}
.recent em{font-style:normal;font-size:12px;color:var(--primary);background:#EFF6FF;border-radius:100px;padding:2px 9px;flex:none}

/* 内页布局 */
.layout{max-width:1200px;margin:0 auto;padding:28px 24px 56px;display:grid;grid-template-columns:250px minmax(0,1fr);gap:28px;align-items:start}
.sidebar{position:sticky;top:88px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);max-height:calc(100vh - 108px);overflow-y:auto}
.sidebar h4{font-size:12px;letter-spacing:.08em;color:var(--text-light);margin:0 4px 10px}
.sidebar a,.sidebar span{display:flex;justify-content:space-between;gap:8px;padding:8px 10px;border-radius:8px;color:var(--text);font-size:14px}
.sidebar a:hover{background:var(--bg-light);text-decoration:none}
.sidebar a.active{background:#EFF6FF;color:var(--primary);font-weight:700}
.sidebar .disabled{color:#94A3B8}
.sidebar em{font-style:normal;font-size:12px;color:var(--text-light);background:var(--bg-light);border-radius:100px;padding:0 8px}
.sidebar a.active em{background:#DBEAFE;color:var(--primary)}
.doc{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px 38px;box-shadow:var(--shadow);min-width:0}
.crumb{font-size:13px;color:var(--text-light);margin-bottom:12px}
.crumb a{color:var(--text-light)}
.doc h1{font-size:30px;line-height:1.35;color:var(--dark);letter-spacing:-.3px;margin-bottom:10px;word-break:break-word}
.meta{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 4px;padding-bottom:18px;border-bottom:1px solid var(--border)}
.meta span{background:var(--bg-light);border:1px solid var(--border);border-radius:100px;padding:4px 12px;font-size:12.5px;color:var(--text)}
.lead{font-size:15.5px;color:var(--text-light);margin:8px 0 22px}
.art-list{list-style:none;margin-top:6px}
.art-row{padding:16px 2px;border-bottom:1px solid var(--border)}
.art-row a{font-size:16.5px;font-weight:600;color:var(--dark)}
.art-row a:hover{color:var(--primary)}
.art-row p{font-size:13.5px;color:var(--text-light);margin:4px 0 2px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-row time{font-size:12.5px;color:#94A3B8}
.pager{display:flex;align-items:center;gap:14px;margin-top:26px;font-size:14px}
.pager a{padding:7px 16px;border:1px solid var(--border);border-radius:8px;background:#fff}
.pager a:hover{background:#EFF6FF;text-decoration:none}
.pager span{color:var(--text-light)}
.doc-nav{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.doc-nav a{flex:1 1 260px;border:1px solid var(--border);border-radius:10px;padding:12px 15px;color:var(--text);font-size:14px;background:var(--bg-light);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc-nav a:hover{border-color:var(--primary-light);text-decoration:none;background:#EFF6FF}
.doc-nav span{display:block;font-size:12px;color:var(--text-light);margin-bottom:3px}
.doc-nav .next{text-align:right}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.source-note{margin-top:22px;font-size:12.5px;color:#94A3B8}
.empty-doc{padding:40px 0;color:var(--text-light);font-size:14.5px}

/* 正文（厂商富文本） */
.doc-body{margin-top:22px;font-size:15px;color:#1F2937;word-break:break-word;overflow-wrap:anywhere}
.doc-body *{max-width:100%}
.doc-body p{margin:9px 0}
/* 厂商富文本里常见空段落（<p><br></p>），统一隐藏，避免段落间出现大片留白 */
.doc-body p:empty,.doc-body p:has(>br:only-child){display:none;margin:0}
.doc-body h1,.doc-body h2,.doc-body h3,.doc-body h4{color:var(--dark);line-height:1.45;margin:22px 0 10px}
.doc-body h1{font-size:23px}
.doc-body h2{font-size:21px}
.doc-body h3{font-size:17.5px}
.doc-body h4{font-size:16px}
.doc-body ul,.doc-body ol{margin:9px 0 9px 24px}
.doc-body li{margin:5px 0}
.doc-body img{height:auto!important;max-width:100%!important;border-radius:8px;border:1px solid var(--border);background:#fff;margin:8px 0}
/* 厂商导出的图片容器带固定宽高，正文列宽被 max-width:100% 压缩后高度不再匹配，会出现图片下方大片留白或底部被裁切；统一改为随图片撑开 */
.doc-body .image-wrapper{height:auto!important;line-height:0}
.doc-body video{max-width:100%!important;height:auto!important;border-radius:10px;margin:10px 0}
.doc-body a{color:var(--primary)}
.doc-body table{width:100%!important;max-width:100%;border-collapse:collapse;margin:14px 0;display:block;overflow-x:auto;font-size:13.5px}
.doc-body th,.doc-body td{border:1px solid var(--border);padding:8px 11px;text-align:left;vertical-align:top;min-width:70px}
.doc-body th{background:#EFF6FF;color:var(--primary);font-weight:700}
.doc-body pre{background:#0F172A;color:#E2E8F0;border-radius:10px;padding:14px 16px;overflow-x:auto;margin:14px 0;font-size:13px;line-height:1.65}
.doc-body code{background:var(--bg-light);border:1px solid var(--border);border-radius:5px;padding:1px 5px;font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.doc-body pre code{background:none;border:0;padding:0;color:inherit}
.doc-body blockquote{border-left:4px solid var(--primary-light);background:#F8FAFC;padding:10px 16px;margin:14px 0;color:var(--text-light);border-radius:0 8px 8px 0}
.doc-body hr{border:0;border-top:1px solid var(--border);margin:20px 0}

/* 页脚 */
.foot{background:#0F172A;color:#CBD5E1;margin-top:20px}
.foot-inner{max-width:1200px;margin:0 auto;padding:26px 24px;font-size:13.5px}
.foot a{color:#93C5FD}
.foot .muted{color:#64748B;font-size:12.5px;margin-top:6px}

/* 目录页（一级 / 二级分类） */
.note{background:#EFF6FF;border:1px solid #DBEAFE;border-radius:10px;padding:12px 16px;font-size:13.5px;color:#1E3A8A;margin:16px 0}
.note a{color:var(--primary)}
.cat-title{font-size:20px;color:var(--dark);margin:30px 0 12px}
.doc-index-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:16px 0 4px}
.doc-index-card{border:1px solid var(--border);border-radius:12px;padding:16px 18px;background:var(--bg-light);transition:.22s;display:block;color:inherit}
.doc-index-card:hover{background:#fff;border-color:var(--primary-light);box-shadow:0 10px 26px rgba(30,64,175,.10);text-decoration:none;transform:translateY(-2px)}
.doc-index-card b{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--dark);font-size:16px;margin-bottom:6px}
.doc-index-card b em{font-style:normal;font-size:11.5px;font-weight:600;color:var(--primary);background:#EFF6FF;border-radius:100px;padding:2px 9px;white-space:nowrap}
.doc-index-card p{font-size:13.5px;color:var(--text-light);margin:0 0 8px;line-height:1.65}
.doc-index-card small{font-size:12px;color:var(--text-light)}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 4px}
.cat-tags a{font-size:13px;border:1px solid var(--border);background:#fff;border-radius:100px;padding:5px 12px;color:var(--text)}
.cat-tags a:hover{border-color:var(--primary-light);background:#EFF6FF;color:var(--primary);text-decoration:none}
.cat-tags a.active{background:var(--primary);border-color:var(--primary);color:#fff}
.cat-empty{border:1px dashed var(--border);border-radius:12px;padding:26px 22px;text-align:center;color:var(--text-light);font-size:14px;background:var(--bg-light);margin-top:18px}
@media (max-width:640px){.doc-index-grid{grid-template-columns:1fr}}

/* 响应式 */
@media (max-width:1080px){
  .cat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:900px){
  .layout{grid-template-columns:minmax(0,1fr);gap:18px}
  .sidebar{position:static;max-height:none;display:flex;flex-wrap:wrap;gap:4px;padding:12px}
  .sidebar h4{width:100%;margin:0 0 6px}
  .sidebar a,.sidebar span{padding:6px 10px;font-size:13px;gap:5px}
  .sidebar em{display:none}
  .doc{padding:26px 22px}
  .hero{padding:34px 26px}
  .hero h1{font-size:31px}
}
/* 图片放大预览：正文图片可点击查看原图（厂商富文本自带 cursor:pointer，这里统一改为放大镜） */
.doc-body img{cursor:zoom-in!important}
.doc-body a img{cursor:pointer!important}
html.lb-open,html.lb-open body{overflow:hidden}
.img-lightbox{position:fixed;top:0;left:0;right:0;bottom:0;z-index:9999;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(15,23,42,.88);cursor:zoom-out;animation:lb-in .16s ease-out}
.img-lightbox img{max-width:96vw;max-height:92vh;width:auto;height:auto;border-radius:8px;background:#fff;box-shadow:0 18px 60px rgba(0,0,0,.55);cursor:zoom-out}
.img-lightbox .lb-tip{position:fixed;left:0;right:0;bottom:16px;margin:0;text-align:center;color:#CBD5E1;font-size:12.5px;pointer-events:none}
@keyframes lb-in{from{opacity:0}to{opacity:1}}
@media (prefers-reduced-motion:reduce){.img-lightbox{animation:none}}
@media (max-width:640px){.img-lightbox{padding:10px}}

@media (max-width:640px){
  .topbar-inner{padding:12px 16px}
  .topnav{gap:12px;font-size:12.5px}
  .topnav a[href="/"]{display:none}
  .home,.layout{padding:18px 14px 44px}
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .cat-card{padding:14px}
  .hero{padding:26px 18px;border-radius:16px}
  .hero h1{font-size:26px}
  .doc{padding:20px 16px;border-radius:12px}
  .doc h1{font-size:23px}
  .doc-body{font-size:14.5px}
  .recent em{display:none}
  .doc-nav a{flex:1 1 100%}
}