/* 松松云帮助中心：多页面文档布局 */
:root{--doc-blue:#087ea4;--doc-blue-soft:#eef8fc;--doc-ink:#182230;--doc-muted:#667085;--doc-line:#e4e7ec;--doc-bg:#f7f8fa;--doc-yellow:#fffaeb;--doc-red:#fff1f0}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:94px}body{margin:0;background:var(--doc-bg);color:var(--doc-ink)}body.doc-menu-open{overflow:hidden}.doc-shell{display:flex;align-items:flex-start;max-width:1210px;min-height:720px;margin:0 auto;padding:98px 24px 72px}.doc-sidebar{position:sticky;top:88px;flex:0 0 250px;max-height:calc(100vh - 110px);overflow:auto;padding:0 24px 24px 0;border-right:1px solid var(--doc-line)}.doc-sidebar-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.doc-sidebar-home{color:var(--doc-ink);font-size:18px;font-weight:700;text-decoration:none}.doc-sidebar-close{display:none;width:34px;height:34px;border:0;border-radius:6px;background:#f2f4f7;color:#475467;font-size:22px;cursor:pointer}.doc-nav{display:grid;gap:2px}.doc-nav a{display:block;padding:8px 10px;border-radius:6px;color:#667085;font-size:14px;line-height:1.45;text-decoration:none}.doc-nav a:hover{background:#f2f4f7;color:#344054}.doc-nav a.active{background:var(--doc-blue-soft);color:var(--doc-blue);font-weight:600}.doc-main{min-width:0;width:100%;max-width:860px;margin:0 auto;padding-left:48px}.doc-mobile-bar{display:none;margin-bottom:18px}.doc-menu-button{padding:8px 12px;border:1px solid var(--doc-line);border-radius:7px;background:#fff;color:#344054;font:inherit;cursor:pointer}.doc-breadcrumb{margin:0 0 24px;color:#98a2b3;font-size:13px}.doc-breadcrumb a{color:#667085;text-decoration:none}.doc-breadcrumb span{margin:0 7px}.doc-page-header{margin-bottom:30px;padding-bottom:24px;border-bottom:1px solid var(--doc-line)}.doc-page-header h1{margin:0 0 9px;font-size:32px;line-height:1.3;letter-spacing:-.02em}.doc-page-header p{max-width:720px;margin:0;color:var(--doc-muted);font-size:16px;line-height:1.8}.doc-toc{margin:0 0 34px;padding:17px 20px;border-left:3px solid #a7d8ea;background:#fff}.doc-toc strong{display:block;margin-bottom:7px;font-size:14px}.doc-toc ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 24px;margin:0;padding-left:18px}.doc-toc a{color:#475467;font-size:14px;text-decoration:none}.doc-toc a:hover{color:var(--doc-blue);text-decoration:underline}.doc-article{padding:0 0 34px;margin:0 0 34px;border-bottom:1px solid var(--doc-line)}.doc-article:last-child{border-bottom:0}.doc-article h2{margin:0 0 15px;font-size:23px;line-height:1.4}.doc-article h3{margin:22px 0 9px;font-size:17px}.doc-article p,.doc-article li{color:#475467;font-size:15px;line-height:1.85}.doc-article p{margin:0 0 14px}.doc-article ul,.doc-article ol{margin:0 0 18px;padding-left:24px}.doc-article li{padding:3px 0}.doc-article strong{color:#1d2939}.doc-callout{margin:19px 0;padding:14px 16px;border:1px solid;border-radius:7px}.doc-callout strong{display:block;margin-bottom:3px;font-size:14px}.doc-callout p{margin:0;font-size:14px;line-height:1.7}.doc-callout.info{border-color:#b9dfed;background:#f0f9fc}.doc-callout.warning{border-color:#fedf89;background:var(--doc-yellow)}.doc-callout.danger{border-color:#fecdca;background:var(--doc-red)}.doc-callout.danger strong{color:#b42318}.doc-home-header{margin-bottom:26px}.doc-home-header h1{margin:0 0 9px;font-size:32px}.doc-home-header p{margin:0;color:var(--doc-muted);font-size:16px}.doc-search{margin:24px 0 30px}.doc-search-label{display:block;margin-bottom:7px;color:#344054;font-size:14px;font-weight:600}.doc-search-wrap{position:relative}.doc-search-wrap input{width:100%;height:46px;padding:0 82px 0 14px;border:1px solid #d0d5dd;border-radius:8px;background:#fff;color:#1d2939;font:15px inherit;outline:none}.doc-search-wrap input:focus{border-color:#66b9d6;box-shadow:0 0 0 3px rgba(8,126,164,.1)}.doc-search-wrap kbd{position:absolute;right:12px;top:12px;padding:3px 6px;border:1px solid #d0d5dd;border-radius:4px;background:#f9fafb;color:#667085;font:11px sans-serif}.doc-no-results{margin:10px 0 0;color:#b42318;font-size:13px}.doc-home-section{margin-top:34px}.doc-home-section h2{margin:0 0 14px;font-size:21px}.doc-frequent{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--doc-line);border-radius:8px;background:#fff;overflow:hidden}.doc-frequent a{padding:13px 15px;border-right:1px solid var(--doc-line);border-bottom:1px solid var(--doc-line);color:#344054;font-size:14px;text-decoration:none}.doc-frequent a:nth-child(3n){border-right:0}.doc-frequent a:nth-last-child(-n+3){border-bottom:0}.doc-frequent a:hover,.doc-category-list a:hover{color:var(--doc-blue);background:#f8fcfd}.doc-category-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;border-top:1px solid var(--doc-line)}.doc-category-list a{display:block;padding:16px 4px;border-bottom:1px solid var(--doc-line);color:#1d2939;text-decoration:none}.doc-category-list strong{display:block;margin-bottom:3px;font-size:15px}.doc-category-list span{color:#667085;font-size:13px;line-height:1.5}.doc-overlay{display:none}.updates-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.updates-panel{min-height:170px;padding:18px;border:1px solid var(--doc-line);border-radius:8px;background:#fff}.updates-panel h2{margin:0 0 12px;font-size:19px}.empty-state{margin:0;padding:28px 10px;color:#98a2b3;font-size:14px;text-align:center}.update-item{padding:12px 0;border-bottom:1px solid var(--doc-line)}.update-item:last-child{border-bottom:0}.update-item time{display:block;margin-bottom:3px;color:#98a2b3;font-size:12px}.update-item a,.update-item strong{color:#344054;font-size:14px;text-decoration:none}.update-item a:hover{color:var(--doc-blue)}.agreement-meta{display:flex;flex-wrap:wrap;gap:10px 26px;margin:12px 0 0;color:#667085;font-size:13px}
@media(max-width:800px){html{scroll-padding-top:82px}.doc-shell{display:block;padding:82px 16px 48px}.doc-sidebar{position:fixed;z-index:1002;top:0;bottom:0;left:-282px;width:276px;max-height:none;padding:20px;background:#fff;border-right:1px solid var(--doc-line);transition:left .2s ease}.doc-sidebar.open{left:0}.doc-sidebar-close{display:block}.doc-overlay{position:fixed;z-index:1001;inset:0;background:rgba(16,24,40,.42)}.doc-overlay.open{display:block}.doc-main{max-width:100%;padding:0}.doc-mobile-bar{display:block}.doc-page-header h1,.doc-home-header h1{font-size:27px}.doc-toc ul{grid-template-columns:1fr}.doc-frequent{grid-template-columns:1fr}.doc-frequent a,.doc-frequent a:nth-child(3n),.doc-frequent a:nth-last-child(-n+3){border-right:0;border-bottom:1px solid var(--doc-line)}.doc-frequent a:last-child{border-bottom:0}.doc-category-list,.updates-columns{grid-template-columns:1fr}.doc-article h2{font-size:21px}}
.doc-faq{padding-bottom:8px}.doc-faq h2{margin:0 0 18px;font-size:22px;color:#101828}.doc-faq-item{padding:18px 0;border-top:1px solid var(--doc-line)}.doc-faq-item h3{margin:0 0 8px;font-size:17px;color:#1d2939}.doc-faq-item p{margin:0;color:#475467;font-size:15px;line-height:1.8}
@media(max-width:420px){.doc-shell{padding-left:12px;padding-right:12px}.doc-search-wrap kbd{display:none}.doc-search-wrap input{padding-right:14px}}

/* 经典文档布局：左侧贴边导航，右侧固定阅读区 */
body{background:#fff}.doc-shell{background:#fff}
@media(min-width:801px){
  .doc-shell{display:flex;align-items:stretch;width:100%;max-width:none;min-height:calc(100vh - 70px);margin:0;padding:70px 0 0}
  .doc-sidebar{position:sticky;top:70px;flex:0 0 250px;width:250px;max-height:calc(100vh - 70px);min-height:calc(100vh - 70px);padding:30px 0;background:#fff;border-right:1px solid #e5e7eb}
  .doc-sidebar-head{height:58px;margin:-30px 0 12px;padding:0 15px;border-bottom:1px solid #e5e7eb}
  .doc-sidebar-home{font-size:18px;color:#111827}
  .doc-nav{gap:0}
  .doc-nav a{padding:11px 22px;border-radius:0;font-size:14px;color:#4b5563}
  .doc-nav a:hover{background:#f8fbfd;color:#00a9ed}
  .doc-nav a.active{background:#effaff;color:#00a9ed;font-weight:600}
  .doc-main{width:auto;max-width:900px;margin:0;padding:38px 48px 72px}
}
.doc-page-header,.doc-home-header{margin-bottom:30px}.doc-page-header h1,.doc-home-header h1{font-size:28px;font-weight:800;color:#101828;letter-spacing:-.01em}.doc-page-header p,.doc-home-header p{font-size:16px;line-height:1.8;color:#475467}.doc-breadcrumb{color:#98a2b3}.doc-article h2{font-size:22px;color:#101828}.doc-article h3{font-size:18px;color:#101828}.doc-article p,.doc-article li{color:#475467;line-height:1.85}
@media(max-width:800px){body,.doc-shell{background:#fff}}

/* 帮助中心导航、正文链接与文章反馈 */
.doc-nav a{font-weight:600}.doc-nav a.active{font-weight:700}.doc-home-section>h2{display:flex;align-items:center;gap:10px;color:#101828;font-weight:700}.doc-home-section>h2::before{content:"";display:block;width:4px;height:22px;border-radius:2px;background:#00a9ed}.doc-frequent a,.doc-category-list a,.doc-category-list strong,.doc-category-list span{color:#00a9ed}.doc-frequent a:hover,.doc-category-list a:hover,.doc-category-list a:hover strong,.doc-category-list a:hover span{color:#087ea4}.doc-main .doc-breadcrumb a,.doc-main .doc-toc a,.doc-main .doc-article a,.doc-main .doc-faq a,.doc-main .doc-support a,.doc-main .doc-feedback-contact{color:#00a9ed;text-decoration:none}.doc-main .doc-breadcrumb a:hover,.doc-main .doc-toc a:hover,.doc-main .doc-article a:hover,.doc-main .doc-faq a:hover,.doc-main .doc-support a:hover,.doc-main .doc-feedback-contact:hover{color:#087ea4;text-decoration:underline}.doc-support{margin-top:8px;padding:24px 0;border-top:1px solid var(--doc-line);border-bottom:1px solid var(--doc-line)}.doc-support p{margin:0;color:#475467;font-size:15px;line-height:1.8}.doc-feedback{padding:30px 0;text-align:center}.doc-feedback-title{margin:0 0 16px;color:#101828;font-size:17px;font-weight:600}.doc-feedback-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.doc-feedback-button{min-width:108px;padding:9px 18px;border:1px solid #d0d5dd;border-radius:999px;background:#fff;color:#475467;font:600 14px/1.4 inherit;cursor:pointer}.doc-feedback-button:hover{border-color:#00a9ed;color:#087ea4}.doc-feedback-button.selected,.doc-feedback-button[aria-pressed="true"]{border-color:#00a9ed;background:#00a9ed;color:#fff}.doc-feedback-message{min-height:22px;margin:12px 0 4px;color:#667085;font-size:14px}.doc-feedback-contact{display:inline-block;font-size:14px}
@media(max-width:420px){.doc-feedback-actions{gap:8px}.doc-feedback-button{min-width:0;max-width:100%;padding:9px 14px}}
.doc-nav a{display:flex;align-items:center;gap:10px}.doc-nav-icon{width:17px;height:17px;flex:0 0 17px;color:#7b8798}.doc-nav a:hover .doc-nav-icon,.doc-nav a.active .doc-nav-icon{color:#00a9ed}