/* LUXGEN guide pages — shared stylesheet. Tokens and shell match index.html exactly. */
:root{
  --void:#F6F8F7;
  --obsidian:#FFFFFF;
  --slate:#ECF0EF;
  --platinum:#0C1418;
  --silver:#4A5A61;
  --dim:#5F6E75;
  --aqua:#0E7C8C;
  --aqua-dim:#2E7E8E;
  --gold:#8A6A22;
  --hair:rgba(12,20,24,.14);
  --hair-2:rgba(12,20,24,.26);
  --display:"Inter Tight",system-ui,sans-serif;
  --body:"Inter Tight",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--void);color:var(--platinum);font-family:var(--body);
  font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased;
  font-feature-settings:"ss01","cv05"}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.12;
  letter-spacing:-.02em;margin:0}
p{margin:0}a{color:inherit}
.wrap{max-width:1240px;margin:0 auto;padding:0 28px}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--aqua);margin:0 0 18px}
.kicker.silver{color:var(--dim)}
.kicker.gold{color:var(--gold)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:12px;z-index:99;background:var(--aqua);color:#fff;padding:10px 16px}

/* nav — identical to index.html */
.topline{background:#0C1418;border-bottom:1px solid rgba(246,248,247,.14);
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:#AEB6B9;
  text-align:center;padding:9px 16px}
.topline b{color:#F6F8F7;font-weight:400}
.nav{position:sticky;top:0;z-index:60;background:rgba(246,248,247,.88);
  backdrop-filter:blur(16px);border-bottom:1px solid var(--hair)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:18px}
.logo{font-family:var(--display);font-weight:800;font-size:20px;letter-spacing:.22em;
  text-decoration:none;color:var(--platinum)}
.logo i{font-style:normal;color:var(--aqua)}
.logo img{display:block;height:40px;width:auto}
footer.foot .logo img{height:36px}
.navlinks{display:flex;gap:26px;font-size:13px;color:var(--silver);letter-spacing:.01em}
.navlinks a{text-decoration:none;position:relative;padding:4px 0}
.navlinks a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--aqua);transition:width .22s}
.navlinks a:hover{color:var(--platinum)}
.navlinks a:hover::after{width:100%}
.navlinks a[aria-current="page"]{color:var(--platinum)}
.navlinks a[aria-current="page"]::after{width:100%}
@media(max-width:1040px){.navlinks{display:none}}
.btn{display:inline-block;padding:13px 26px;text-decoration:none;font-size:13px;
  font-weight:600;letter-spacing:.03em;border:1px solid transparent;cursor:pointer;
  transition:.18s;font-family:var(--body)}
.btn-solid{background:var(--aqua);color:#fff}
.btn-solid:hover{background:#0A6371}
.btn-line{border-color:var(--hair-2);color:var(--platinum);background:none}
.btn-line:hover{border-color:var(--aqua);color:var(--aqua)}
.btn-sm{padding:10px 18px;font-size:12px}

/* breadcrumb */
.crumbs{padding:26px 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:0 10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.crumbs li+li::before{content:"›";color:var(--dim);margin-right:10px}
.crumbs a{text-decoration:none;color:var(--silver)}
.crumbs a:hover{color:var(--aqua)}
.crumbs [aria-current="page"]{color:var(--platinum)}

/* article head */
.article-head{padding:36px 0 32px;border-bottom:1px solid var(--hair);position:relative;overflow:hidden}
.article-head::before{content:"";position:absolute;top:-220px;left:50%;transform:translateX(-50%);
  width:1000px;height:640px;background:radial-gradient(closest-side,rgba(14,124,140,.07),transparent 72%);
  pointer-events:none}
.article-head .wrap{position:relative}
.article-head h1{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.02em;max-width:30ch}
.article-head h1 i{font-style:normal;color:var(--aqua)}
.standfirst{margin-top:18px;font-size:17.5px;color:var(--silver);max-width:58ch}
.meta{display:flex;gap:30px;flex-wrap:wrap;margin-top:22px;padding-top:18px;
  border-top:1px solid var(--hair-2);font-family:var(--mono);font-size:12px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}
.meta b{color:var(--platinum);font-weight:400}

/* article body */
.article{padding:42px 0 54px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:72px;align-items:start}
@media(max-width:960px){.article-grid{grid-template-columns:minmax(0,1fr);gap:48px}}
.prose h2{font-size:clamp(19px,2.4vw,26px);letter-spacing:-.02em;margin-top:44px;max-width:30ch;scroll-margin-top:96px}
.prose section:first-child h2{margin-top:0}
.prose h3{font-size:17px;margin-top:26px;letter-spacing:-.02em}
.prose p{margin-top:18px;color:var(--silver);font-size:16px;max-width:68ch}
.prose p b,.prose p strong,.prose li b{color:var(--platinum);font-weight:600}
.prose ul,.prose ol{margin:18px 0 0;padding-left:22px;color:var(--silver);max-width:64ch}
.prose li{margin-top:9px;padding-left:4px}
.prose li::marker{font-family:var(--mono);font-size:12px;color:var(--aqua)}
.prose a{color:var(--aqua);text-decoration:none;border-bottom:1px solid rgba(14,124,140,.35);transition:border-color .16s}
.prose a:hover{border-bottom-color:var(--aqua)}
.prose code{font-family:var(--mono);font-size:13px;color:var(--platinum)}

/* tables — same rules as index.html */
.tablewrap{margin-top:30px;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
caption{text-align:left;font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--dim);padding-bottom:14px}
th,td{text-align:left;padding:15px 18px 15px 0;border-bottom:1px solid var(--hair);vertical-align:top}
thead th{font-family:var(--display);font-weight:700;font-size:15px;letter-spacing:-.02em}
thead th em{display:block;font-style:normal;font-family:var(--mono);font-size:12px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin-top:6px;font-weight:400}
tbody th{font-weight:400;color:var(--dim);font-family:var(--mono);font-size:12.5px;
  letter-spacing:.1em;text-transform:uppercase}
td{font-family:var(--mono);color:var(--platinum);font-size:13px;line-height:1.6}
td.txt{font-family:var(--body);color:var(--silver);font-size:14px}
.hl{color:var(--aqua)}
.gd{color:var(--gold)}
.prose table a{border-bottom:none}

/* callout */
.callout{margin-top:34px;border:1px solid var(--hair-2);border-left:2px solid var(--aqua);
  background:var(--slate);padding:22px 26px 24px;max-width:68ch}
.callout .kicker{color:#0B6E7C}
.callout.gold .kicker{color:#7A5D1D}
.callout.gold{border-left-color:var(--gold)}
.callout .kicker{margin-bottom:10px}
.callout p{margin-top:8px;font-size:15px}
.callout p+p{margin-top:12px}

/* key figures */
.figures{display:flex;gap:38px;flex-wrap:wrap;border-top:1px solid var(--hair-2);padding-top:20px;margin-top:34px}
.figures div b{display:block;font-family:var(--display);font-weight:700;font-size:28px;line-height:1}
.figures div span{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--dim);margin-top:9px}

/* faq — same pattern as index.html */
.faqs{margin-top:44px}
.faqs .list{margin-top:26px;border-top:1px solid var(--hair);max-width:76ch}
.faqs details{border-bottom:1px solid var(--hair);padding:20px 0}
.faqs summary{cursor:pointer;font-family:var(--display);font-weight:700;font-size:17px;
  letter-spacing:-.02em;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faqs summary::-webkit-details-marker{display:none}
.faqs summary::after{content:"+";color:var(--aqua);font-family:var(--mono);font-weight:400;font-size:16px;flex:none}
.faqs details[open] summary::after{content:"–"}
.faqs details p{margin-top:13px;color:var(--silver);font-size:14.5px;max-width:76ch}

/* cta row */
.cta{margin-top:40px;padding-top:28px;border-top:1px solid var(--hair-2);display:flex;gap:12px;flex-wrap:wrap}
/* CTA buttons sit inside .prose: undo the .prose a link colour/border (fix 2026-08-29; solid label was aqua-on-aqua) */
.prose .cta .btn{border-bottom:none}
.prose .cta .btn-solid{color:#fff}
.prose .cta .btn-line{color:var(--platinum)}
.prose .cta .btn-line:hover{color:var(--aqua)}

/* side rail */
.rail{position:sticky;top:96px}
.rail h4{font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--dim);margin:0 0 12px;font-weight:400}
.rail nav{border-top:1px solid var(--hair);margin-bottom:38px}
.rail nav a{display:block;text-decoration:none;color:var(--silver);font-size:13px;
  padding:9px 0;border-bottom:1px solid var(--hair);transition:color .16s}
.rail nav a:hover{color:var(--aqua)}
.skus{border-top:1px solid var(--hair)}
.skus a{display:block;text-decoration:none;padding:12px 0;border-bottom:1px solid var(--hair);transition:background .16s}
.skus a:hover b{color:var(--aqua)}
.skus b{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--platinum);font-weight:500}
.skus span{display:block;font-size:12.5px;color:var(--silver);margin-top:3px;line-height:1.45}
.skus em{display:block;font-style:normal;font-family:var(--mono);font-size:12.5px;color:var(--dim);margin-top:4px}
@media(max-width:960px){.rail{position:static}.rail nav{display:none}}

/* related guides — same grid pattern as .steps on index.html */
.related{padding:50px 0 60px;border-top:1px solid var(--hair);background:var(--obsidian)}
.related h2{font-size:clamp(22px,2.6vw,32px)}
.related .grid{margin-top:32px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--hair);border:1px solid var(--hair)}
.related .grid.four{grid-template-columns:repeat(4,1fr)}
@media(max-width:920px){.related .grid,.related .grid.four{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.related .grid,.related .grid.four{grid-template-columns:1fr}}
.card{background:var(--void);padding:26px 22px 28px;text-decoration:none;display:flex;
  flex-direction:column;min-height:200px;transition:background .2s}
.card:hover{background:#ECF0EF}
.card .n{font-family:var(--mono);font-size:12.5px;letter-spacing:.2em;color:var(--aqua)}
.card h3{font-size:17px;margin-top:14px}
.card p{margin-top:10px;font-size:13.5px;color:var(--silver);line-height:1.62}
.card .more{margin-top:auto;padding-top:18px;font-family:var(--mono);font-size:12px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--aqua)}

/* hub page */
.hub{padding:44px 0 63px}
.hub h1{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.02em;max-width:20ch}
.hub .lead{margin-top:22px;color:var(--silver);max-width:60ch;font-size:16.5px}
.hub .grid{margin-top:32px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--hair);border:1px solid var(--hair)}
@media(max-width:920px){.hub .grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.hub .grid{grid-template-columns:1fr}}

/* footer — identical to index.html */
footer.foot{background:#0C1418;color:#F6F8F7;padding:66px 0 36px;border-top:1px solid #0C1418}
footer.foot .logo{color:#F6F8F7}
footer.foot .logo i{color:#5FD4E8}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
@media(max-width:900px){.foot-top{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.foot-top{grid-template-columns:1fr}}
footer.foot h4{font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;
  color:#AEB6B9;margin:0 0 16px;font-weight:400}
footer.foot a{display:block;text-decoration:none;color:#C9D0D2;font-size:13px;padding:5px 0}
footer.foot a:hover{color:#5FD4E8}
.nap{color:#C9D0D2;font-size:13px;line-height:1.85;margin-top:16px}
.legal{margin-top:50px;padding-top:22px;border-top:1px solid rgba(246,248,247,.14);
  font-family:var(--mono);font-size:12px;color:#AEB6B9;letter-spacing:.06em;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

.stickybuy{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:rgba(246,248,247,.97);backdrop-filter:blur(14px);
  border-top:1px solid var(--hair-2);padding:11px 18px;
  align-items:center;justify-content:space-between;gap:12px}
.stickybuy span{font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:.08em}
@media(max-width:760px){.stickybuy{display:flex}body{padding-bottom:70px}}

:focus-visible{outline:1px solid var(--aqua);outline-offset:3px}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}}

/* product pages */
.ptop{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:start}
@media(max-width:820px){.ptop{grid-template-columns:1fr}}
.pshot{margin:0;background:#FFFFFF;border:1px solid var(--hair);aspect-ratio:1/1;display:flex;align-items:center;justify-content:center}
.pshot img{width:100%;height:100%;object-fit:contain;padding:22px}
.pbuy .tablewrap{margin-top:18px}
.pbuy table{min-width:0;font-size:13px}
.pbuy th,.pbuy td{padding:10px 14px 10px 0}
.pbuy tbody th{white-space:nowrap}
.pprice{font-family:var(--display);font-weight:700;font-size:28px;letter-spacing:-.02em;line-height:1}
.pprice s{font-family:var(--mono);font-weight:400;font-size:12px;color:var(--dim);margin-left:10px;letter-spacing:0}
.pprice.poa{color:var(--dim);font-size:20px}
.pprice.small{font-size:17px;margin-top:10px}
.pprice.small.poa{font-size:13px}
.pnote{margin-top:14px;font-size:12.5px;color:var(--dim);max-width:44ch}
.pcard .pimg{aspect-ratio:1/1;background:#FFFFFF;border:1px solid var(--hair);margin-bottom:16px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.pcard .pimg img{width:100%;height:100%;object-fit:contain;padding:12px;transition:transform .3s}
.pcard:hover .pimg img{transform:scale(1.04)}
.pcard h3{margin-top:12px}
.hub .grid .pcard{min-height:0}

/* mobile tap targets (>=44px) */
@media(max-width:760px){
  .btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
  .logo{display:inline-flex;align-items:center;min-height:44px}
  .crumbs a{display:inline-block;padding:14px 0;margin:-14px 0}
  .faqs summary{min-height:44px;align-items:center}
  .rail nav a,.skus a{min-height:44px;display:flex;flex-direction:column;justify-content:center}
  footer.foot a{min-height:44px;display:flex;align-items:center}
  .nap a{display:inline-block!important;padding:13px 0!important;margin:-13px 0}
}
.hub .intro{margin-top:26px;max-width:70ch}
.hub .intro p{color:var(--silver);font-size:16px;margin-top:14px}

/* hub groups (TDS cluster, 2026-08-28) */
.hub .group{margin-top:46px}
.hub .group h2{font-size:clamp(19px,2.2vw,24px);letter-spacing:-.02em;scroll-margin-top:96px}
.hub .group>p{margin-top:8px;color:var(--silver);font-size:15px;max-width:62ch;line-height:1.6}
.hub .group .grid{margin-top:22px;gap:0;background:transparent;border-width:1px 0 0 1px}
.hub .group .card{box-shadow:inset -1px -1px 0 0 var(--hair)}  /* partial rows leave no grey cell (same fix as home .catalog) */