/* Shared layout extracted from products/deep-learning-platform-manual.html. */
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:root{--ink:#19120e;--ink-soft:#2a1d16;--muted:#74665f;--accent:#f97316;--accent-dark:#c84d08;--line:#eadfd8;--paper:#fff;--bg:#faf7f4;--sidebar:276px;--top:76px}
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.top-actions{gap:3px}.top-actions .site-home-link{padding:9px 10px;color:#5d514b;font-size:13px;font-weight:700}.top-actions .site-home-link:hover{color:var(--accent-dark);text-decoration:none}
.topbar-cta{display:inline-flex;min-height:40px;margin-left:8px;padding:0 15px;align-items:center;color:#fff;background:var(--ink);border-radius:4px;font-size:13px;font-weight:800}.topbar-cta:hover{color:#fff;background:var(--accent-dark);text-decoration:none}
.top-actions #print-button{min-height:40px;margin-left:7px;padding:0 13px;font-size:12px;font-weight:700}
.reading-progress i{background:var(--accent)}.manual-mobile-brand{display:none}
main{max-width:1040px;padding:58px 46px 56px}.hero{max-width:820px;padding:8px 0 42px}.eyebrow{color:var(--accent-dark);letter-spacing:0}.eyebrow>span{background:var(--accent)}
h1{margin-top:20px;color:var(--ink);font-size:52px;font-weight:800;letter-spacing:0}.hero-lead{color:var(--ink-soft)}.hero-description{color:var(--muted)}
.primary-link{min-height:44px;padding:0 19px;align-items:center;color:#fff;background:var(--accent-dark);border-radius:4px}.primary-link:hover{color:#fff;background:var(--ink)}.text-link{color:var(--ink-soft);font-weight:700}
.hero-stats{max-width:720px}.hero-stats>div{border-left-color:var(--line)}.hero-stats b{color:var(--ink);font-family:inherit;font-weight:800;letter-spacing:0}.hero-stats span{color:var(--muted)}
.source-card{max-width:720px;padding:16px 18px;background:#fff;border-color:var(--line);border-radius:4px}.source-icon{color:var(--accent-dark);border-color:#efd6c6;border-radius:4px}.source-card small,.source-card p{color:var(--muted)}.source-card strong{color:var(--ink);font-family:inherit;font-weight:700}
.workflow{gap:12px;margin:8px 0 46px}.workflow a{padding:18px 17px;color:var(--ink);background:#fff;border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:4px}.workflow a:hover{border-color:#dfa77e;box-shadow:0 10px 26px rgba(55,29,13,.07);transform:translateY(-2px)}.workflow small{color:var(--accent-dark);letter-spacing:0}.workflow span{color:var(--muted)}
.chapter{padding:52px 0 26px;margin:0;background:transparent;border:0;border-top:1px solid var(--line);border-radius:0}.chapter-header,.chapter>p,.chapter>h3,.chapter>.route,.chapter>.step,.chapter>.note,.chapter>.checklist,.chapter>.next-chapter{max-width:780px}.chapter-header{border-bottom-color:var(--line)}.chapter-meta{color:#9b8d85;letter-spacing:0}
.chapter-meta span:first-child,.chapter h2>span{color:var(--accent-dark)}.chapter h2{color:var(--ink);font-size:30px;letter-spacing:0}.chapter-summary,.chapter>p,.step p{color:var(--muted)}.chapter h3,.step h3{color:var(--ink)}
.route{color:#5f5149;background:#f3eee9;border-radius:4px}.route>span{color:#735f53;background:#e8ddd5;border-radius:2px}.step-number{color:var(--accent-dark);background:#fff1e6;border-color:#f1d2bd;border-radius:4px}
.table-wrap{border-color:var(--line);border-radius:4px}th{color:#49372d;background:#f1e9e4}td{border-top-color:#eee4de}td:first-child{color:#49372d}tbody tr:nth-child(even){background:#fcfaf8}tbody tr:hover{background:#fff5ed}
.note{background:#edf4f1;border-left-color:#5e8b78;border-radius:0 4px 4px 0}.note strong{color:#315a49}.note p{color:#536b61}.note.important{background:#fff3e7;border-left-color:var(--accent)}.note.important strong{color:#8d4209}.note.important p{color:#745845}
.checklist{background:#f1f5ee;border-color:#dce6d7;border-radius:4px}.checklist h3{color:#395c3c}.checklist li{color:#536b55}.checklist li span{color:#5d8a61}
.screenshot{border-color:#dfd4cd;border-radius:4px}.figure-bar{color:#5f5149;background:#f3eee9;border-bottom-color:#e7dcd5}.figure-bar b{color:var(--accent-dark)}.figure-bar time{color:#6b5b52;border-color:#ddd0c8;border-radius:3px}.image-button{background:#ece8e5}.image-button:hover{background:#e6e0dc}.image-button img{box-shadow:0 3px 12px rgba(38,19,8,.1)}.zoom-hint{background:rgba(25,18,14,.9);border-color:#796a62;border-radius:3px}.screenshot figcaption{color:#75675f}
.next-chapter{border-top-color:var(--line)}.document-footer{border-top-color:var(--line);color:#95877f}.document-footer strong{color:var(--ink)}
.search-banner{top:var(--top);color:#644527;background:#fff1df;border-color:#edcfaa;border-radius:4px}.no-results{color:#765a48}
dialog{background:var(--ink);border-color:#5d4a40;border-radius:4px}dialog::backdrop{background:rgba(25,18,14,.88)}.dialog-toolbar{border-bottom-color:#59483f}.dialog-toolbar button{color:#fff;background:#38281f;border-color:#715b4f}
.consult-dock{border-color:var(--line);box-shadow:0 8px 24px rgba(55,29,13,.1)}
@media(max-width:1180px){.top-actions .optional-nav{display:none}.topbar{padding:0 24px}main{padding-right:34px;padding-left:34px}}
@media(max-width:900px){:root{--sidebar:244px}.sidebar{padding:20px 13px 14px}.top-actions .site-home-link{display:none}main{padding:40px 24px}.chapter{padding:44px 0 22px}}
@media(max-width:720px){:root{--top:68px}.manual-frame{display:block;width:100%;border:0}.page-shell{margin-left:0}.topbar{padding:0 16px;gap:10px}.topbar-leading{gap:11px}.manual-mobile-brand{display:flex;min-width:0;align-items:center;gap:8px;color:var(--ink);font-size:13px}.manual-mobile-brand:hover{text-decoration:none}.manual-mobile-brand img{width:32px;height:32px;object-fit:contain}.manual-mobile-brand strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topbar-cta{display:none}.top-actions #print-button{min-width:42px;margin-left:0;padding:0 9px;font-size:0}.top-actions #print-button::before{content:'打印';font-size:11px}.menu-button{width:40px;height:40px;padding:0;font-size:0}.menu-button::before{content:'☰';font-size:18px}.sidebar{position:fixed;inset:0 auto 0 0;width:276px;height:100vh}.sidebar .brand{font-size:16px}main{padding:34px 16px 42px}.hero{padding:2px 0 28px}h1{font-size:34px;line-height:1.25}.hero-actions{gap:15px}.hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 8px}.hero-stats>div:nth-child(3){border-left:0;padding-left:0}.workflow{grid-template-columns:1fr 1fr}.chapter{padding:38px 0 18px}.chapter h2{font-size:23px}.chapter h2>span{font-size:22px}.consult-dock{margin-bottom:80px}}
@media print{.manual-frame{display:block;width:100%;border:0}.consult-dock,.chat-widget,.manual-mobile-brand{display:none!important}.chapter{border-top:0}}
.manual-frame{display:grid;grid-template-columns:1fr;grid-template-rows:auto auto minmax(0,1fr);width:min(1240px,calc(100% - 48px));min-height:100vh;margin:0 auto;background:var(--bg);border-right:1px solid var(--line);border-left:1px solid var(--line)}
.page-shell{display:contents}.topbar{grid-column:1;grid-row:1}.sidebar{grid-column:1;grid-row:2;position:sticky;inset:auto;top:var(--top);z-index:25;width:100%;height:auto;display:grid;grid-template-columns:auto auto minmax(240px,1fr);grid-template-rows:auto auto;padding:14px 24px 0;background:var(--ink)}
.sidebar .brand{grid-column:1;grid-row:1}.sidebar-edition{grid-column:2;grid-row:1;margin:0 0 0 20px;align-self:center}.search-box{grid-column:3;grid-row:1;justify-self:end;width:min(300px,100%);padding:0 0 0 20px}.search-box label{display:none}.search-box p{display:none}#toc{grid-column:1/-1;grid-row:2;display:flex;gap:3px;width:100%;padding:10px 0 12px;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;border-top:1px solid #49362d}#toc a{flex:0 0 auto;min-height:38px;padding:8px 12px;border:0;border-radius:3px;white-space:nowrap}#toc a.active{border-bottom:2px solid var(--accent);background:#39271e}#toc a>span{display:inline;margin-right:5px}.sidebar-bottom{display:none}.sidebar-backdrop{display:none!important}main{grid-column:1;grid-row:3;width:100%;max-width:1040px;margin:0 auto}
@media(max-width:720px){.manual-frame{width:100%;border:0}.sidebar{position:sticky;top:var(--top);grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;padding:10px 16px 0}.sidebar .brand{grid-column:1;grid-row:1}.sidebar-edition{grid-column:2;grid-row:1;margin-left:10px}.search-box{grid-column:1/-1;grid-row:2;width:100%;padding:8px 0 0}.search-field{width:100%}#toc{grid-row:3;grid-column:1/-1;margin-top:8px;padding:8px 0 10px}.sidebar{grid-template-rows:auto auto auto}main{grid-row:3;padding:34px 16px 42px}.topbar{position:sticky;top:0}}
@media print{.manual-frame{display:block;width:100%;border:0}.sidebar{position:static;display:none}.page-shell{display:block}.topbar,main{display:block}}
@media screen and (max-width:720px){.sidebar{visibility:visible;pointer-events:auto;transform:none;grid-template-rows:auto auto}.sidebar .brand,.sidebar-edition{display:none}.search-box{grid-row:1;padding-top:0}#toc{grid-row:2;margin-top:0}.menu-button{display:none}main,.hero,.hero-lead,.hero-description{min-width:0;max-width:100%;overflow-wrap:anywhere;word-break:break-all}}
/* Light horizontal directory: keep the navigation visible without competing with the document. */
.sidebar{background:#fff;color:var(--ink);border-bottom:1px solid var(--line);box-shadow:0 4px 16px rgba(55,29,13,.06)}
.sidebar .brand{color:var(--ink)}.sidebar .brand small{color:var(--muted)}.sidebar-edition{color:var(--ink)}.sidebar-edition span{color:var(--accent-dark);background:#fff3e8;border-color:#f0d2bd}
.search-field{border-color:var(--line);background:#fff}.search-field input{color:var(--ink)}.search-field input::placeholder{color:#9b8b82}.search-field button{color:var(--muted)}
#toc{margin-left:-24px;width:calc(100% + 48px);padding-left:24px;padding-right:24px;border-top-color:var(--line);scrollbar-color:#d7b092 transparent}#toc a{color:#74665f}#toc a>span{color:var(--accent-dark)}#toc a:hover{color:var(--ink);background:#fff4eb}#toc a.active{color:var(--accent-dark);background:#fff4eb;border-bottom-color:var(--accent)}#toc a.active>span{color:var(--accent-dark)}
@media(max-width:720px){#toc{margin-left:-16px;width:calc(100% + 32px);padding-left:16px;padding-right:16px}}
/* Desktop documentation layout: a fixed vertical directory owns the left edge. */
@media(min-width:721px){
  .manual-frame{display:block;width:100%;max-width:none;margin:0;border:0;background:var(--bg)}
  .page-shell{display:block;min-width:1040px;margin-left:var(--sidebar)}
  .sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);height:100vh;display:flex;flex-direction:column;z-index:40;padding:22px 18px 16px;background:#fff;color:var(--ink);border-right:1px solid var(--line);border-bottom:0;box-shadow:4px 0 16px rgba(55,29,13,.06);overflow:hidden}
  .sidebar .brand{display:none}.sidebar-edition{margin:8px 8px 16px;color:var(--ink)}
  .search-box{padding:0 7px 12px}.search-box label{display:block;color:var(--muted)}.search-box p{display:block;color:var(--muted)}
  #toc{display:block;flex:1;width:auto;margin:0;padding:0 3px 0 0;overflow-x:hidden;overflow-y:auto;border-top:0;scrollbar-color:#d7b092 transparent}
  #toc a{display:flex;align-items:center;gap:10px;min-height:0;padding:9px 10px;margin:2px 0;border:0;border-left:2px solid transparent;border-radius:4px;color:#74665f;white-space:normal}
  #toc a>span{display:inline;margin:0;color:var(--accent-dark)}#toc a:hover{color:var(--ink);background:#fff4eb}#toc a.active{color:var(--accent-dark);background:#fff4eb;border-left-color:var(--accent);border-bottom:0}
  .sidebar-bottom{display:block;margin-top:14px;color:var(--muted);border-top-color:var(--line)}.sidebar-bottom>span:last-child{color:#9b8b82}
  main{width:1040px;max-width:none;margin:0 auto}
}
@media(max-width:720px){
  .manual-frame{display:block;width:100%;border:0}.page-shell{display:block;margin-left:0}
  .sidebar{position:fixed;inset:0 auto 0 0;width:276px;height:100vh;display:flex;flex-direction:column;z-index:50;padding:22px 18px 16px;transform:translateX(-100%);visibility:hidden;pointer-events:none;overflow:hidden}
  .nav-open .sidebar{transform:translateX(0);visibility:visible;pointer-events:auto}.sidebar .brand{display:flex;color:var(--ink)}.sidebar-edition{display:flex;margin:26px 8px 16px;color:var(--ink)}
  .search-box{display:block;padding:0 7px 12px}.search-box label{display:block;color:var(--muted)}.search-box p{display:block;color:var(--muted)}
  #toc{display:block;flex:1;width:auto;margin:0;padding:0 3px 0 0;overflow-x:hidden;overflow-y:auto;border-top:0}
  #toc a{display:flex;align-items:center;gap:10px;padding:9px 10px;margin:2px 0;border:0;border-left:2px solid transparent;border-radius:4px;white-space:normal;color:#74665f}
  #toc a>span{display:inline;margin:0;color:var(--accent-dark)}#toc a:hover{color:var(--ink);background:#fff4eb}#toc a.active{color:var(--accent-dark);background:#fff4eb;border-left-color:var(--accent);border-bottom:0}
  .sidebar-bottom{display:block;margin-top:14px;color:var(--muted);border-top-color:var(--line)}.sidebar-bottom>span:last-child{color:#9b8b82}
  .menu-button{display:inline-block}.workflow{grid-template-columns:repeat(2,minmax(0,1fr));min-width:0}.workflow a,.source-card{min-width:0}.hero-lead,.hero-description{word-break:break-all}html,body{overflow-x:hidden}
}
@media(min-width:721px){
  .page-shell{padding-top:var(--top)}
  .topbar{position:fixed;inset:0 0 auto;width:100%;height:var(--top);padding:0 max(20px,calc((100vw - 1240px)/2));z-index:1000;background:rgba(255,255,255,.97);border-bottom-color:var(--line);box-shadow:none}
  .topbar-leading{display:flex;align-items:center;min-width:0}.manual-mobile-brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);line-height:1.2}.manual-mobile-brand img{width:42px;height:42px;object-fit:contain}.manual-mobile-brand strong{font-size:17px;font-weight:800;white-space:nowrap}.manual-mobile-brand:hover{text-decoration:none}.breadcrumb{display:none!important}
  .top-actions{margin-left:auto;gap:2px}.top-actions .site-home-link{position:relative;padding:10px 11px;color:#5d514b;font-size:14px;font-weight:700;white-space:nowrap}.top-actions .site-home-link:hover{color:var(--accent-dark);text-decoration:none}.top-actions .site-home-link[aria-current="page"]{color:var(--accent-dark)}.top-actions .site-home-link[aria-current="page"]::after{position:absolute;right:11px;bottom:3px;left:11px;height:2px;background:var(--accent);content:""}.topbar-cta{display:inline-flex;min-height:42px;margin-left:8px;padding:0 17px;align-items:center;justify-content:center;gap:9px;color:#fff;background:var(--ink);border-radius:4px;font-size:14px;font-weight:800;white-space:nowrap}.topbar-cta::after{content:"→";font-size:16px;line-height:1}.topbar-cta:hover{color:#fff;background:var(--accent-dark);text-decoration:none}.top-actions #print-button{min-height:42px;margin-left:7px;padding:0 13px;font-size:12px;font-weight:700;white-space:nowrap}
  .sidebar{top:var(--top);height:calc(100vh - var(--top))}
}
@media(min-width:1400px){
  .page-shell{margin-left:0;min-width:0}
  main{width:1040px;max-width:none;margin-left:calc(max(20px,calc((100vw - 1240px)/2)) - 46px);margin-right:0}
  .sidebar{left:max(0px,calc((100vw - 1240px)/2 - 84px));width:84px;padding:18px 8px 14px;transition:width .2s ease}
  .sidebar:hover,.sidebar:focus-within{width:276px;padding-left:18px;padding-right:18px}
  .sidebar .brand,.sidebar-edition,.search-box,.sidebar-bottom{display:none}
  .sidebar:hover .brand,.sidebar:hover .sidebar-edition,.sidebar:hover .search-box,.sidebar:hover .sidebar-bottom,.sidebar:focus-within .brand,.sidebar:focus-within .sidebar-edition,.sidebar:focus-within .search-box,.sidebar:focus-within .sidebar-bottom{display:flex}
  .sidebar:hover .sidebar-edition,.sidebar:focus-within .sidebar-edition{display:flex}.sidebar:hover .search-box,.sidebar:focus-within .search-box{display:block}.sidebar:hover .sidebar-bottom,.sidebar:focus-within .sidebar-bottom{display:block}
  #toc{width:100%}#toc a{justify-content:center;padding-left:6px;padding-right:6px;font-size:0}#toc a>span{margin:0;font-size:11px}#toc a.active{border-left:0;border-right:2px solid var(--accent)}
  .sidebar:hover #toc a,.sidebar:focus-within #toc a{justify-content:flex-start;padding-left:10px;padding-right:10px;font-size:12px}.sidebar:hover #toc a.active,.sidebar:focus-within #toc a.active{border-left:2px solid var(--accent);border-right:0}
}
/* Keep the full directory open when the centered page leaves enough room for it. */
@media(min-width:1792px){
  .sidebar{left:max(0px,calc((100vw - 1240px)/2 - 276px));width:276px;padding:22px 18px 16px;transition:none}
  .sidebar .brand,.sidebar-edition{display:flex}
  .search-box{display:block}
  .sidebar-bottom{display:block}
  #toc a{justify-content:flex-start;padding-left:10px;padding-right:10px;font-size:12px}
  #toc a.active{border-left:2px solid var(--accent);border-right:0}
}
/* The sidebar is a chapter directory only; remove decorative header/footer blocks. */
.sidebar .brand,.sidebar-edition,.search-box,.sidebar-bottom{display:none!important}
.sidebar{padding-top:16px;padding-bottom:16px}
#toc{margin-top:0;padding-top:0;padding-bottom:0}
@media(min-width:721px){
  .sidebar{height:auto;max-height:calc(100vh - var(--top) - 24px);align-self:flex-start}
  #toc{flex:0 1 auto;max-height:calc(100vh - var(--top) - 32px);overflow-y:auto}
}
@media(min-width:1400px){
  /* Place the compact rail just beyond the document's right content edge. */
  .sidebar{left:calc(max(20px,calc((100vw - 1240px)/2)) + 948px);right:auto}
  #toc a.active{border-left:2px solid var(--accent);border-right:0}
}
@media(min-width:1792px){
  .sidebar{width:84px;padding:18px 8px 14px}
  #toc a{justify-content:center;padding-left:6px;padding-right:6px;font-size:0}
  #toc a>span{margin:0;font-size:11px}
  .sidebar:hover,.sidebar:focus-within{width:276px;padding-left:18px;padding-right:18px}
  .sidebar:hover #toc a,.sidebar:focus-within #toc a{justify-content:flex-start;padding-left:10px;padding-right:10px;font-size:12px}
}
@media(min-width:1400px){
  /* Keep the right-side directory expanded by default. */
  .sidebar{width:196px;padding:18px 18px 14px;transition:none}
  .sidebar:hover,.sidebar:focus-within{width:196px;padding-left:18px;padding-right:18px}
  #toc a{justify-content:flex-start;gap:6px;padding-left:10px;padding-right:10px;font-size:11px;white-space:nowrap}
  #toc a>span{margin:0;font-size:11px}
  #toc a.active{border-left:2px solid var(--accent);border-right:0}
}