/* LH Engineering Hub — shell + content styles */
:root{
  --navy:#0E1B2A; --navy-2:#152840; --navy-3:#1D3550; --navy-line:#2A415E;
  --amber:#F0A500; --amber-dark:#8A6100; --amber-bg:#FDF3DA; --amber-line:#EBD9A0;
  --bg:#F3F4F1; --surface:#FFFFFF; --line:#E3E5E1; --line-2:#EEF0EC;
  --text:#171D26; --muted:#5B6572; --faint:#8A94A0; --link:#0A5C8C; --link-hover:#074364;
  --blue:#4C9BE8; --green:#63C68A; --purple:#C77DDB; --red-bg:#FDECEC; --red-line:#EFC1C1; --red-text:#7A2323;
  --sans:'Space Grotesk',system-ui,-apple-system,Segoe UI,sans-serif; --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sidebar-w:268px; --toc-w:210px; --radius:8px; --shadow:0 2px 10px rgba(14,27,42,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14.5px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none}a:hover{color:var(--link-hover);text-decoration:underline}
code{font-family:var(--mono);font-size:.9em;background:var(--line-2);padding:1px 5px;border-radius:3px}
pre code{background:none;padding:0;font-size:inherit}
kbd{font-family:var(--mono);font-size:10.5px;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:1px 5px;color:var(--muted);background:var(--surface)}
.skip{position:absolute;left:-999px;top:0;background:var(--amber);color:var(--navy);padding:8px 12px;z-index:100}.skip:focus{left:8px;top:8px}
.ico{width:16px;height:16px;flex-shrink:0}
mark{background:#FFE9A8;color:inherit;padding:0 1px;border-radius:2px}
img{max-width:100%}

/* ---------- App frame ---------- */
.app{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);min-height:100vh}
.main{min-width:0}

/* ---------- Sidebar ---------- */
.sidebar{position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--navy);color:#C7D0DB;display:flex;flex-direction:column;border-right:1px solid #0A1420;scrollbar-width:thin;scrollbar-color:#2A415E transparent}
.brand{display:flex;align-items:center;gap:11px;padding:16px 18px 14px;color:#fff;text-decoration:none;border-bottom:1px solid #1B2D42}
.brand:hover{text-decoration:none;color:#fff}
.brand-mark{width:30px;height:30px;background:var(--amber);color:var(--navy);display:grid;place-items:center;font-size:12px;font-weight:700;border-radius:5px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-weight:700;font-size:14px;letter-spacing:.01em}
.brand-sub{font-family:var(--mono);font-size:10.5px;color:#7E92A8;letter-spacing:.08em;text-transform:uppercase;margin-top:2px}
.nav-filter{display:flex;align-items:center;gap:8px;margin:12px 12px 6px;background:#0A1420;border:1px solid #1B2D42;border-radius:6px;padding:0 10px;color:#7E92A8}
.nav-filter:focus-within{border-color:var(--amber)}
.nav-filter input{flex:1;background:none;border:0;color:#fff;font:inherit;font-size:13px;padding:8px 0;outline:none;min-width:0}
.nav-filter input::placeholder{color:#5F7389}
.nav{padding:6px 8px 10px;flex:1}
.nav-section{margin-top:4px}
.nav-section-btn{display:flex;align-items:center;gap:8px;width:100%;background:none;border:0;color:#9FB0C2;font:inherit;font-size:11.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:9px 8px 6px;cursor:pointer;border-radius:5px;text-align:left}
.nav-section-btn:hover{color:#fff}
.nav-section-btn .count{margin-left:auto;font-family:var(--mono);font-size:10.5px;color:#5F7389;font-weight:500}
.chev{width:0;height:0;border-left:5px solid currentColor;border-top:4px solid transparent;border-bottom:4px solid transparent;transition:transform .15s;flex-shrink:0;opacity:.7}
.nav-section.open .chev{transform:rotate(90deg)}
.nav-items{display:none;flex-direction:column;gap:1px;padding-left:8px;border-left:1px solid #1B2D42;margin-left:10px}
.nav-section.open .nav-items{display:flex}
.nav-item{display:flex;align-items:center;gap:6px;color:#C7D0DB;font-size:13.5px;padding:6px 10px;border-radius:5px;text-decoration:none;line-height:1.3}
.nav-item:hover{background:#152840;color:#fff;text-decoration:none}
.nav-item.active{background:#1D3550;color:#fff;font-weight:600;box-shadow:inset 3px 0 0 var(--amber)}
.nav-item.nav-index{color:#9FB0C2;font-style:italic}
.nav-item.hidden{display:none}
.nav-section.filtered .nav-items{display:flex}
.nav-section.empty{display:none}
.nav-empty{color:#5F7389;font-size:13px;padding:10px 12px}
.nav-tools{padding:6px 8px 8px;border-top:1px solid #1B2D42}
.nav-section-title{font-size:11.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:#9FB0C2;padding:9px 8px 6px}
.nav-ext{color:var(--amber);font-size:13px;padding:5px 10px}.nav-ext .ext{margin-left:auto;font-size:11px;opacity:.7}
.nav-foot{padding:10px 18px 14px;font-family:var(--mono);font-size:10.5px;color:#5F7389;border-top:1px solid #1B2D42}

/* ---------- Top bar ---------- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;background:rgba(243,244,241,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);padding:10px 28px;min-height:58px}
.icon-btn{background:none;border:1px solid var(--line);border-radius:6px;width:34px;height:34px;display:grid;place-items:center;color:var(--muted);cursor:pointer}
.menu-btn{display:none}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumbs a{color:var(--muted)}.crumbs .current{color:var(--text);font-weight:600}.crumbs .sep{color:var(--faint)}
.search-btn{margin-left:auto;display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:7px;padding:7px 10px 7px 12px;color:var(--faint);font:inherit;font-size:13.5px;cursor:pointer;width:min(380px,40vw);text-align:left}
.search-btn:hover{border-color:#C9CDC7;color:var(--muted)}
.search-btn-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ai-btn{display:inline-flex;align-items:center;gap:6px;background:var(--navy);color:#fff;border-radius:7px;padding:8px 12px;font-size:13px;font-weight:600;white-space:nowrap}
.ai-btn:hover{background:var(--navy-2);color:#fff;text-decoration:none}
.spark{color:var(--amber)}
.topbar-links{display:flex;gap:14px;font-family:var(--mono);font-size:12.5px}
.topbar-links a{color:var(--amber-dark);font-weight:600}

/* ---------- Page grid ---------- */
.page{display:grid;grid-template-columns:minmax(0,1fr) var(--toc-w);gap:40px;max-width:1240px;padding:36px 40px 60px;margin:0 auto}
.page.no-toc{grid-template-columns:minmax(0,1fr)}
.page.no-toc .toc{display:none}
.content{min-width:0;max-width:940px}
.page.search-layout .content{max-width:900px}
.toc{position:sticky;top:76px;align-self:start;font-size:13px;max-height:calc(100vh - 100px);overflow:auto}
.toc-title{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);font-weight:600;margin-bottom:8px}
.toc ul{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.toc li a{display:block;padding:4px 12px;color:var(--muted);margin-left:-2px;border-left:2px solid transparent;line-height:1.35}
.toc li a:hover{color:var(--text);text-decoration:none}
.toc li a.active{color:var(--text);border-left-color:var(--amber);font-weight:600}
.page-foot{margin-top:56px;border-top:1px solid var(--line);padding-top:14px;font-size:12.5px;color:var(--faint);font-family:var(--mono);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* ---------- Content typography ---------- */
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;color:var(--amber-dark);font-weight:600;text-transform:uppercase}
.content h1{font-size:34px;line-height:1.12;margin:8px 0 12px;font-weight:700;letter-spacing:-.01em}
.content h2{font-size:13px;letter-spacing:.12em;font-family:var(--mono);color:var(--muted);margin:44px 0 14px;font-weight:600;text-transform:uppercase;display:flex;align-items:center;gap:12px}
.content h2::after{content:"";flex:1;height:1px;background:var(--line)}
.content h3{font-size:17px;margin:0 0 8px;font-weight:700}
.content p{margin:0 0 12px}
.lede{font-size:16px;line-height:1.55;color:var(--muted);max-width:780px;text-wrap:pretty;margin-bottom:0}
.page-head{margin-bottom:8px}
.page-head .title-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.page-head .title-row h1{margin:0}
.meta-row{display:flex;gap:18px;flex-wrap:wrap;margin-top:16px;font-size:12.5px;color:var(--faint);font-family:var(--mono)}
.meta-row b{color:var(--muted);font-weight:600}
.tag{display:inline-block;font-family:var(--mono);font-size:10.5px;background:var(--amber-bg);color:var(--amber-dark);padding:3px 8px;border-radius:3px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;vertical-align:middle}
.tag.danger{background:var(--red-bg);color:var(--red-text)}
.tag.neutral{background:var(--line-2);color:var(--muted)}
.tag.ok{background:#E4F5EA;color:#1E6B3B}
.chips{display:flex;gap:8px;flex-wrap:wrap;font-size:12.5px;font-family:var(--mono);color:var(--muted)}
.chips span,.chips a{border:1px solid var(--line);border-radius:3px;padding:3px 8px;background:var(--surface)}
.chips a:hover{border-color:var(--amber);text-decoration:none}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;min-width:0}
.card.pad-lg{padding:22px 24px}
a.card{display:block;color:var(--text)}
a.card:hover{text-decoration:none;border-color:var(--amber);box-shadow:var(--shadow)}
.card .eyebrow{font-size:10.5px}
.card h3{margin-top:0}
.card .value{font-family:var(--mono);font-size:16px;font-weight:600;margin-top:8px}
.card .desc{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.5}
.card.dark{background:var(--navy);color:#fff;border-color:var(--navy)}
.card.dark .eyebrow{color:var(--amber)}.card.dark .desc{color:#94A3B5}
a.card.dark:hover{background:var(--navy-2)}
.card.accent{border-left:4px solid var(--amber)}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.kv div{border:1px solid var(--line-2);border-radius:6px;padding:10px 12px;background:var(--surface)}
.kv .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--amber-dark);font-weight:600;text-transform:uppercase}
.kv .v{font-size:13px;margin-top:4px;line-height:1.5}
.callout{border:1px solid var(--amber-line);background:var(--amber-bg);color:#5D4A0E;border-radius:var(--radius);padding:14px 18px;font-size:13.5px;line-height:1.5;margin:24px 0 0}
.callout.danger{background:var(--red-bg);border-color:var(--red-line);color:var(--red-text)}
.callout.info{background:#E8F1FA;border-color:#BFD7EE;color:#174B72}
.callout a{color:inherit;text-decoration:underline}
pre.code{background:var(--navy);color:#C7D0DB;border-radius:6px;padding:14px 16px;font-family:var(--mono);font-size:12.5px;line-height:1.7;margin:10px 0 0;overflow-x:auto;position:relative;white-space:pre-wrap}
pre.code .c{color:#7E92A8}
pre.code .copy{position:absolute;top:8px;right:8px;background:#1D3550;color:#C7D0DB;border:1px solid var(--navy-line);border-radius:4px;font:inherit;font-size:11px;padding:3px 8px;cursor:pointer;opacity:0;transition:opacity .15s}
pre.code:hover .copy{opacity:1}
ol.steps{margin:12px 0 0;padding-left:22px;line-height:1.7;font-size:14px}
ol.steps li{margin-bottom:6px;padding-left:4px}
ol.steps li::marker{font-family:var(--mono);font-weight:600;color:var(--amber-dark)}
table.data{width:100%;border-collapse:collapse;font-size:13.5px;min-width:640px}
.table-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow-x:auto}
table.data th{text-align:left;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--muted);padding:12px 16px;border-bottom:1px solid var(--line);text-transform:uppercase}
table.data td{padding:12px 16px;border-bottom:1px solid var(--line-2);vertical-align:top}
table.data tr:last-child td{border-bottom:0}
table.data .mono{font-family:var(--mono)}
.vlan{font-family:var(--mono);font-weight:600;border-left:3px solid var(--amber);padding-left:8px}
.link-list{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.link-row{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--line);border-radius:6px;padding:12px 14px;color:var(--text);background:var(--surface)}
.link-row:hover{text-decoration:none;border-color:var(--amber);box-shadow:var(--shadow)}
.link-row .t{font-weight:600}.link-row .d{font-size:12.5px;color:var(--muted);display:block}
.link-row .act{color:var(--link);font-weight:600;white-space:nowrap;font-size:13.5px}
.photo-slot{height:180px;border:1.5px dashed #C9CDC7;border-radius:6px;background:repeating-linear-gradient(135deg,#F7F8F5 0 10px,#F1F2EE 10px 20px);display:grid;place-items:center;color:var(--faint);font-family:var(--mono);font-size:11.5px;text-align:center;padding:12px}
.diagram{background:var(--navy);border-radius:10px;padding:26px;overflow-x:auto;color:#fff}
.diagram .inner{min-width:820px}
.node{background:var(--navy-2);border:1px solid var(--navy-line);border-radius:8px;padding:12px 16px}
.node.hl{border-color:var(--amber)}
.node .lbl{font-family:var(--mono);font-size:10.5px;color:#7E92A8;letter-spacing:.1em}
.node.hl .lbl{color:var(--amber)}
.node .n{color:#fff;font-weight:700;font-size:15px;margin-top:4px}
.node .s{color:#94A3B5;font-size:12px;margin-top:3px;line-height:1.45}
.chip{font-family:var(--mono);font-size:11.5px;color:#C7D0DB;background:var(--navy);border-radius:3px;padding:3px 8px;display:block}
.arrow{color:var(--amber);font-size:20px;display:grid;place-items:center;padding:0 14px}
.flow{display:flex;align-items:center;gap:0}
.center{display:flex;justify-content:center}
.vlan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0 14px;margin-top:6px}
.vlan-grid .node{border-top-width:3px}
.pipe{display:flex;justify-content:center;color:#7E92A8;font-size:16px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}
.section-head .more{font-size:13px;font-weight:600}
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:6px;padding:8px 14px;font:inherit;font-size:13.5px;font-weight:600;cursor:pointer;text-decoration:none}
.btn:hover{border-color:#C9CDC7;text-decoration:none}
.btn.primary{background:var(--navy);color:#fff;border-color:var(--navy)}.btn.primary:hover{background:var(--navy-2)}
.btn.amber{background:var(--amber);color:var(--navy);border-color:var(--amber)}

/* ---------- Home ---------- */
.hero{background:var(--navy);color:#fff;border-radius:12px;padding:34px 36px 30px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-60px;top:-80px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(240,165,0,.22),transparent 65%)}
.hero .eyebrow{color:var(--amber)}
.hero h1{color:#fff;font-size:34px;margin:8px 0 8px}
.hero p{color:#C7D0DB;max-width:640px;font-size:15px;margin:0}
.hero-search{margin-top:22px;max-width:680px;position:relative;z-index:1}
.hero-search button.search-open{display:flex;align-items:center;gap:12px;width:100%;background:#fff;color:var(--faint);border:0;border-radius:9px;padding:13px 16px;font:inherit;font-size:15px;cursor:pointer;text-align:left;box-shadow:0 6px 24px rgba(0,0,0,.25)}
.hero-search button.search-open span{flex:1}
.hero-search button.search-open .ai-hint{flex:0;display:inline-flex;align-items:center;gap:6px;background:var(--amber-bg);color:var(--amber-dark);font-size:12px;font-weight:600;padding:4px 9px;border-radius:5px;white-space:nowrap}
.hero-examples{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;font-size:12.5px;color:#7E92A8;align-items:center}
.hero-examples button{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#C7D0DB;border-radius:20px;padding:4px 11px;font:inherit;font-size:12px;cursor:pointer}
.hero-examples button:hover{background:rgba(255,255,255,.16);color:#fff}
.quick{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:16px}
.recent{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.recent li{display:flex;gap:14px;align-items:baseline;padding:10px 0;border-bottom:1px solid var(--line-2);font-size:13.5px}
.recent li:last-child{border-bottom:0}
.recent .when{font-family:var(--mono);font-size:11.5px;color:var(--faint);width:80px;flex-shrink:0}
.recent .sec{font-family:var(--mono);font-size:10.5px;color:var(--amber-dark);margin-left:auto;text-transform:uppercase;letter-spacing:.06em}

/* ---------- Product catalog & product pages ---------- */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.product-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:10px;overflow:hidden;color:var(--text);transition:box-shadow .15s,border-color .15s}
.product-card:hover{text-decoration:none;border-color:var(--amber);box-shadow:0 6px 20px rgba(14,27,42,.12)}
.product-card .art{aspect-ratio:16/9;background:var(--navy);display:block;overflow:hidden}
.product-card .art img{width:100%;height:100%;object-fit:cover;display:block}
.product-card .body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.product-card .name{font-weight:700;font-size:16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.product-card .desc{font-size:13px;color:var(--muted);line-height:1.5;flex:1}
.product-card .foot{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:11px;color:var(--faint);margin-top:6px;padding-top:10px;border-top:1px solid var(--line-2)}
.product-card .foot .status{display:inline-flex;align-items:center;gap:5px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--green);display:inline-block}
.dot.warn{background:var(--amber)}.dot.off{background:#B7C0CA}
.product-card.featured{grid-column:1/-1;flex-direction:row}
.product-card.featured .art{width:42%;aspect-ratio:auto;min-height:220px}
.product-card.featured .body{padding:22px 26px}
.product-card.featured .name{font-size:22px}
.product-card.featured .desc{font-size:14px}
.catalog-filter{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 16px}
.catalog-filter button{border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:5px 12px;font:inherit;font-size:12.5px;cursor:pointer;color:var(--muted)}
.catalog-filter button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.product-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:24px;align-items:stretch;margin-top:18px}
.product-hero .art{background:var(--navy);border-radius:12px;overflow:hidden;min-height:240px;display:block}
.product-hero .art img{width:100%;height:100%;object-fit:cover;display:block}
.glance{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:6px 18px}
.glance .row{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--line-2);font-size:13px;align-items:baseline}
.glance .row:last-child{border-bottom:0}
.glance .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--faint);text-transform:uppercase;font-weight:600}
.glance .v{min-width:0;overflow-wrap:anywhere}
.glance .v .mono{font-family:var(--mono);font-size:12.5px}
.status-pill{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11px;font-weight:600;padding:3px 9px;border-radius:12px;background:#E4F5EA;color:#1E6B3B}
.status-pill.warn{background:var(--amber-bg);color:var(--amber-dark)}
.related{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.related a{display:block;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:12px 14px;color:var(--text)}
.related a:hover{border-color:var(--amber);text-decoration:none}
.related .k{font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--amber-dark);text-transform:uppercase;font-weight:600}
.related .t{font-weight:600;margin-top:3px;font-size:14px}
.runbook-list{display:flex;flex-direction:column;gap:10px}
.runbook-row{display:grid;grid-template-columns:110px 1fr auto;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:14px 18px;color:var(--text)}
.runbook-row:hover{border-color:var(--amber);text-decoration:none;box-shadow:var(--shadow)}
.runbook-row .t{font-weight:700;font-size:15px}.runbook-row .s{font-size:13px;color:var(--muted);margin-top:2px}
.runbook-row .go{color:var(--link);font-weight:600;font-size:13px;white-space:nowrap}
.symptom-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;margin-top:6px}
.symptom-grid .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--muted);font-weight:600;text-transform:uppercase;margin:14px 0 5px}
.symptom-grid .lbl:first-child{margin-top:0}

/* ---------- Search palette ---------- */
.palette{position:fixed;inset:0;z-index:50}
.palette-backdrop{position:absolute;inset:0;background:rgba(14,27,42,.45);backdrop-filter:blur(2px)}
.palette-box{position:relative;margin:8vh auto 0;width:min(720px,94vw);background:var(--surface);border-radius:12px;box-shadow:0 24px 70px rgba(0,0,0,.35);overflow:hidden;display:flex;flex-direction:column;max-height:78vh}
.palette-input{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);color:var(--faint)}
.palette-input input{flex:1;border:0;outline:0;font:inherit;font-size:16px;color:var(--text);background:none;min-width:0}
.palette-results{overflow-y:auto;padding:8px;flex:1}
.p-group{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);padding:10px 12px 4px}
.p-item{display:flex;gap:12px;align-items:flex-start;padding:10px 12px;border-radius:8px;color:var(--text);cursor:pointer}
.p-item:hover,.p-item.sel{background:var(--line-2);text-decoration:none}
.p-item .icon{width:30px;height:30px;border-radius:7px;background:var(--navy);color:var(--amber);display:grid;place-items:center;font-family:var(--mono);font-size:11px;font-weight:700;flex-shrink:0}
.p-item.ai .icon{background:var(--amber);color:var(--navy);font-size:15px}
.p-item .pt{font-weight:600;font-size:14px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.p-item .pt .sec{font-family:var(--mono);font-size:10.5px;color:var(--faint);font-weight:500;text-transform:uppercase;letter-spacing:.06em}
.p-item .ps{font-size:12.5px;color:var(--muted);margin-top:2px;line-height:1.45;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.p-item .pm{font-size:12px;color:var(--link);margin-top:4px;display:flex;gap:10px;flex-wrap:wrap}
.p-item .go{margin-left:auto;color:var(--faint);font-size:12px;align-self:center;white-space:nowrap}
.p-empty{padding:28px 16px;text-align:center;color:var(--muted);font-size:13.5px}
.p-hint{padding:18px 14px 8px;color:var(--faint);font-size:13px}
.p-hint b{color:var(--muted)}
.palette-foot{display:flex;gap:16px;padding:8px 16px;border-top:1px solid var(--line);font-size:11.5px;color:var(--faint);background:#FAFBF8}
.palette-foot kbd{margin-right:3px}.palette-foot .right{margin-left:auto}

/* ---------- Search page ---------- */
.search-hero{margin-bottom:22px}
.search-hero-box{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:6px 6px 6px 16px;margin-top:10px;color:var(--faint);box-shadow:var(--shadow)}
.search-hero-box:focus-within{border-color:var(--amber)}
.search-hero-box input{flex:1;border:0;outline:0;font:inherit;font-size:16px;padding:9px 0;background:none;min-width:0;color:var(--text)}
.search-examples{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:10px;font-size:12.5px;color:var(--faint)}
.search-examples button{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:20px;padding:4px 11px;font:inherit;font-size:12px;cursor:pointer}
.search-examples button:hover{border-color:var(--amber);color:var(--text)}
.ai-panel{background:linear-gradient(160deg,#0E1B2A,#16283F);color:#E6ECF2;border-radius:12px;padding:22px 24px;margin-bottom:26px;border:1px solid #23395A;position:relative}
.ai-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.ai-head .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--amber);font-weight:600;text-transform:uppercase;display:flex;align-items:center;gap:8px}
.ai-head .badge{font-family:var(--mono);font-size:10px;background:rgba(240,165,0,.14);color:var(--amber);border:1px solid rgba(240,165,0,.35);border-radius:4px;padding:2px 7px;letter-spacing:.06em}
.ai-head .meta{margin-left:auto;font-family:var(--mono);font-size:10.5px;color:#7E92A8}
.ai-body{font-size:14.5px;line-height:1.6;min-height:24px}
.ai-body p{margin:0 0 10px}
.ai-body ol{margin:8px 0 0;padding-left:22px}
.ai-body li{margin-bottom:6px}
.ai-body li::marker{color:var(--amber);font-family:var(--mono);font-weight:600}
.ai-body code{background:rgba(255,255,255,.1);color:#FFE9A8;border-radius:3px;padding:1px 5px}
.ai-body .cite{display:inline-block;font-family:var(--mono);font-size:10.5px;background:rgba(240,165,0,.18);color:var(--amber);border-radius:3px;padding:0 5px;margin-left:2px;vertical-align:1px}
.ai-body .cite:hover{background:var(--amber);color:var(--navy);text-decoration:none}
.ai-caution{margin-top:12px;border-left:3px solid var(--amber);padding:6px 12px;font-size:13px;color:#F3E0B0;background:rgba(240,165,0,.08);border-radius:0 6px 6px 0}
.ai-sources{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px;margin-top:16px}
.ai-sources a{display:block;background:rgba(255,255,255,.05);border:1px solid #2A415E;border-radius:8px;padding:9px 12px;color:#E6ECF2;font-size:13px}
.ai-sources a:hover{border-color:var(--amber);text-decoration:none;background:rgba(255,255,255,.09)}
.ai-sources .n{font-family:var(--mono);font-size:10.5px;color:var(--amber);margin-right:6px}
.ai-sources .s{display:block;font-family:var(--mono);font-size:10.5px;color:#7E92A8;margin-top:2px;text-transform:uppercase;letter-spacing:.06em}
.ai-follow{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;align-items:center;font-size:12px;color:#7E92A8}
.ai-follow button{background:rgba(255,255,255,.07);border:1px solid #2A415E;color:#C7D0DB;border-radius:20px;padding:5px 12px;font:inherit;font-size:12.5px;cursor:pointer}
.ai-follow button:hover{border-color:var(--amber);color:#fff}
.ai-foot{margin-top:14px;font-size:11.5px;color:#7E92A8;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.ai-foot .fb{display:inline-flex;gap:6px}
.ai-foot .fb button{background:none;border:1px solid #2A415E;color:#9FB0C2;border-radius:5px;padding:2px 8px;cursor:pointer;font:inherit;font-size:12px}
.ai-foot .fb button:hover{border-color:var(--amber);color:#fff}
.ai-thinking{display:flex;align-items:center;gap:10px;color:#9FB0C2;font-size:13.5px}
.ai-thinking .dots span{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--amber);margin-right:4px;animation:blink 1.2s infinite}
.ai-thinking .dots span:nth-child(2){animation-delay:.2s}.ai-thinking .dots span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.2}40%{opacity:1}}
.cursor{display:inline-block;width:7px;height:15px;background:var(--amber);vertical-align:-2px;margin-left:2px;animation:blink .8s infinite}
.results-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px;font-size:13px;color:var(--muted)}
.results-head .n{font-weight:600;color:var(--text)}
.filters{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto}
.filters button{border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:4px 11px;font:inherit;font-size:12px;cursor:pointer;color:var(--muted)}
.filters button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.result{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin-bottom:10px}
.result:hover{border-color:#C9CDC7}
.result .crumb{font-family:var(--mono);font-size:10.5px;color:var(--faint);letter-spacing:.06em;text-transform:uppercase;display:flex;gap:8px;align-items:center}
.result .crumb .sc{font-family:var(--mono);margin-left:auto;color:#B7C0CA;text-transform:none;letter-spacing:0}
.result h3{margin:4px 0 4px;font-size:17px}
.result h3 a{color:var(--text)}
.result h3 .in{font-weight:500;color:var(--muted);font-size:14px}
.result .snip{font-size:13.5px;color:var(--muted);line-height:1.55}
.result .also{margin-top:8px;font-size:12.5px;display:flex;gap:12px;flex-wrap:wrap}
.result .also span{color:var(--faint)}
.result-empty{padding:40px 20px;text-align:center;color:var(--muted);background:var(--surface);border:1px dashed var(--line);border-radius:10px}

/* ---------- Responsive ---------- */
@media (max-width:1180px){.page{grid-template-columns:minmax(0,1fr)}.toc{display:none}.topbar-links{display:none}}
@media (max-width:900px){
  .app{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:fixed;left:0;top:0;width:var(--sidebar-w);transform:translateX(-100%);transition:transform .2s;z-index:40;box-shadow:0 0 40px rgba(0,0,0,.4)}
  body.nav-open .sidebar{transform:none}
  .menu-btn{display:grid}
  .page{padding:22px 18px 40px}
  .topbar{padding:10px 16px}
  .search-btn{width:auto;flex:1}.search-btn kbd{display:none}
  .ai-btn span+span{display:none}
  .content h1{font-size:28px}
  .product-hero{grid-template-columns:1fr}
  .product-card.featured{flex-direction:column}.product-card.featured .art{width:100%;aspect-ratio:16/9}
  .runbook-row{grid-template-columns:1fr;gap:6px}
  .vlan-grid{min-width:820px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ---------- Ranked common issues ---------- */
.rank{font-family:var(--mono);font-weight:700;font-size:15px;color:var(--amber-dark);background:var(--amber-bg);border-radius:6px;padding:6px 10px;text-align:center;white-space:nowrap}
.rank-list .runbook-row{grid-template-columns:56px 1fr auto}
.rank-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
a.rank-card{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;align-items:center;padding:14px 16px}
.rank-card .rank{grid-row:span 2;font-size:14px}
.rank-card .t{font-weight:700;font-size:14.5px}
.rank-card .desc{margin:0;font-size:12.5px}
a.rank-card.more{grid-template-columns:1fr;border-style:dashed}
.rank-card.more .t{color:var(--link)}
.runbook-row .t,.runbook-row .s,.rank-card .t,.rank-card .desc{display:block}