/* Sparx Techno Engineers - main stylesheet */
:root{
  --grey:#737373; --ink:#1f2326; --ink-2:#4a5056; --line:#e3e5e8;
  --bg:#fff; --soft:#f5f6f7; --dark:#23272b;
  --amber:#f7a936; --amber-d:#b8650a; --amber-h:#e8981f;
  --wa:#1faa59; --wa-d:#168a46;
  --radius:10px; --max:1180px;
  --font:'Barlow',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --font-h:'Barlow Condensed','Barlow',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.6;color:var(--ink);background:var(--bg)}
img{max-width:100%;height:auto;display:block}
a{color:var(--amber-d)}
a:hover{color:var(--ink)}
h1,h2,h3,h4{font-family:var(--font-h);line-height:1.15;margin:0 0 .5em;color:var(--ink);font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(2.4rem,5.5vw,3.9rem)}
h2{font-size:clamp(1.8rem,3.6vw,2.5rem)}
h3{font-size:1.45rem}
h4,.h4{font-size:1.25rem}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
address{font-style:normal}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.center{text-align:center}
.big{font-size:1.2rem;color:var(--ink-2)}
.lead{font-size:1.2rem;color:var(--ink-2)}
.icon{flex:none;vertical-align:middle}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:12px;top:-60px;background:var(--ink);color:#fff;padding:10px 16px;border-radius:6px;z-index:200;text-decoration:none}
.skip-link:focus{top:12px;color:#fff}

/* Bars */
.offer-bar{background:var(--amber);text-align:center;font-weight:600;padding:8px 12px}
.offer-bar a{color:var(--ink);text-decoration:none}
.topbar{background:var(--dark);color:#d6d9dc;font-size:.92rem}
.topbar a{color:#d6d9dc;text-decoration:none}
.topbar a:hover{color:var(--amber)}
.topbar-inner{display:flex;justify-content:flex-end;gap:22px;padding-top:7px;padding-bottom:7px;flex-wrap:wrap}
.topbar-inner a,.topbar-addr{display:inline-flex;align-items:center;gap:6px}
.topbar .icon{color:var(--amber)}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px}
.brand img{height:54px;width:auto}
.nav{display:flex;align-items:center;gap:6px}
.nav ul{list-style:none;display:flex;align-items:center;gap:2px;margin:0;padding:0}
.nav a{font-weight:600;color:var(--ink);text-decoration:none;padding:10px 12px;border-bottom:3px solid transparent;font-size:1.02rem}
.nav a:hover{color:var(--amber-d)}
.nav a[aria-current="page"]{border-bottom-color:var(--amber)}
.nav .nav-cta{margin-left:10px;border-bottom:0;padding:10px 20px;color:var(--ink)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:46px;height:46px;cursor:pointer;padding:0;position:relative}
.nav-toggle-bars,.nav-toggle-bars::before,.nav-toggle-bars::after{display:block;width:22px;height:2px;background:var(--ink);position:absolute;left:11px;transition:transform .2s,opacity .2s}
.nav-toggle-bars{top:22px}
.nav-toggle-bars::before,.nav-toggle-bars::after{content:"";left:0}
.nav-toggle-bars::before{top:-7px}
.nav-toggle-bars::after{top:7px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-7px) rotate(-45deg)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font:600 1.02rem/1.2 var(--font);padding:14px 24px;border-radius:8px;border:2px solid transparent;text-decoration:none;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.btn-primary{background:var(--amber);color:var(--ink)}
.btn-primary:hover{background:var(--amber-h);color:var(--ink)}
.btn-wa{background:var(--wa-d);color:#fff}
.btn-wa:hover{background:#0f6e37;color:#fff}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-sm{padding:9px 16px;font-size:.95rem}
.btn[disabled]{opacity:.6;cursor:wait}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin:1.4em 0 0}
.btn-row-center{justify-content:center}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--amber-d);text-decoration:none}
.link-arrow:hover{color:var(--ink);text-decoration:underline}

/* Hero */
.hero{background:var(--soft);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding-top:56px;padding-bottom:56px}
.eyebrow{font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:.88rem;color:var(--grey);margin-bottom:.8em}
.accent{color:var(--amber-d)}
.hero-media img{width:100%;border-radius:var(--radius)}
.facts{background:var(--dark);color:#fff}
.facts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.facts-grid>div{padding:22px 18px;border-left:1px solid #3b4046;display:flex;flex-direction:column}
.facts-grid>div:first-child{border-left:0;padding-left:0}
.facts-grid strong{font-family:var(--font-h);font-size:1.35rem;color:var(--amber)}
.facts-grid span{font-size:.95rem;color:#c3c7cb}

/* Sections */
.section{padding:64px 0}
.section-soft{background:var(--soft)}
.section-head{max-width:720px;margin-bottom:34px}
.section-head p{color:var(--ink-2);font-size:1.1rem}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.cat-card:hover{border-color:var(--amber);transform:translateY(-3px);color:var(--ink)}
.cat-media,.pcard-media{display:flex;align-items:center;justify-content:center;background:#fff;aspect-ratio:4/3;padding:14px;border-bottom:1px solid var(--line)}
.cat-media.is-dark,.pcard-media.is-dark,.pgallery-item.is-dark{background:var(--dark)}
.cat-media,.pcard-media{overflow:hidden}
.cat-media img,.pcard-media img{width:100%;height:100%;object-fit:contain}
.cat-text{display:flex;flex-direction:column;gap:4px;padding:18px 20px 22px}
.cat-text strong{font-family:var(--font-h);font-size:1.4rem}
.cat-text span{color:var(--ink-2);font-size:.97rem}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.why{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px}
.why .icon{color:var(--amber-d);margin-bottom:10px}
.why p{margin:0;color:var(--ink-2);font-size:.98rem}
.logo-grid{list-style:none;display:grid;gap:16px;margin:0 0 24px}
.logo-grid-8{grid-template-columns:repeat(4,1fr)}
.logo-grid-4{grid-template-columns:repeat(5,1fr)}
.logo-grid li{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px;display:flex;align-items:center;justify-content:center;aspect-ratio:3/2}
.logo-grid img{width:100%;height:100%;object-fit:contain}
.cta-band{background:var(--dark);color:#fff;padding:48px 0}
.cta-band h2{color:#fff;margin-bottom:.2em}
.cta-band p{margin:0;color:#c9cdd1}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band .btn-row{margin:0}
.cta-band .btn-ghost{color:#fff;border-color:#fff}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink)}

/* Page hero */
.page-hero{background:var(--soft);border-bottom:1px solid var(--line);padding:38px 0 40px}
.page-hero h1{font-size:clamp(2.1rem,4.5vw,3.1rem);margin-bottom:.3em}
.page-hero .lead{max-width:760px;margin:0}
.page-hero-compact{padding:20px 0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px;font-size:.93rem;color:var(--grey)}
.crumbs li+li::before{content:"/";margin-right:6px;color:#b3b6ba}
.crumbs a{color:var(--ink-2)}
.page-hero-compact .crumbs ol{margin:0}

/* Products */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.chip{font:600 .98rem var(--font);padding:9px 18px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--ink);cursor:pointer}
.chip:hover{border-color:var(--amber)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.cat-section{margin-bottom:52px;scroll-margin-top:100px}
.cat-section[hidden]{display:none}
.cat-blurb{color:var(--ink-2);margin-bottom:20px}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pcard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.pcard-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:6px;flex:1}
.pcard-body h3{margin:0;font-size:1.4rem}
.pcard-body h3 a{color:var(--ink);text-decoration:none}
.pcard-body h3 a:hover{color:var(--amber-d)}
.pcard-body p{margin:0}
.pcard-cat{font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;font-weight:600;color:var(--grey)}
.pcard-price{font-weight:600;color:var(--ink-2);font-size:.95rem}
.pcard-body .link-arrow{margin-top:auto;padding-top:8px}

.pdetail-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.pgallery{display:grid;gap:14px}
.pgallery-item{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;justify-content:center}
.pgallery-item img{max-height:460px;width:auto;max-width:100%;object-fit:contain}
.pinfo h1{font-size:clamp(2rem,4vw,2.8rem)}
.price-note{background:var(--soft);border-left:4px solid var(--amber);padding:12px 16px;border-radius:0 8px 8px 0}
.ticks{list-style:none;display:grid;gap:9px;margin:0 0 1.2em}
.ticks li{display:flex;gap:10px;align-items:flex-start}
.ticks .icon{color:var(--amber-d);margin-top:3px}
.ticks-cols{grid-template-columns:repeat(2,1fr);gap:10px 28px}
.adv-h{margin-top:1.6em}
.item-grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px;margin:0 0 20px}
.item-grid li{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px}
.item-grid img{max-height:130px;width:auto;object-fit:contain}
.note{color:var(--ink-2);font-size:.95rem;font-style:italic}
.note-box{background:var(--soft);border:1px solid var(--line);border-left:4px solid var(--amber);border-radius:8px;padding:18px 22px;margin-top:34px}
.note-box p{margin:0 0 .5em}
.note-box p:last-child{margin:0}

/* Spec tables */
.table-wrap{overflow-x:auto;margin:0 0 28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.table-wrap h3{padding:16px 20px 0;margin:0}
.spec{width:100%;border-collapse:collapse;font-size:.97rem}
.spec caption{text-align:left;font:700 1.35rem var(--font-h);padding:16px 20px 10px}
.spec th,.spec td{padding:11px 16px;text-align:left;border-top:1px solid var(--line)}
.spec thead th{background:var(--dark);color:#fff;border-top:0;font-weight:600;white-space:nowrap}
.spec tbody tr:nth-child(even){background:var(--soft)}

/* About */
.split{display:grid;grid-template-columns:1.2fr 1fr;gap:44px;align-items:center}
.split-media img,.rounded{border-radius:var(--radius)}
.prose p{color:var(--ink-2)}
.mvv{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.mvv-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.mvv-wide{grid-column:1/-1}
.mvv-card h2{font-size:1.7rem}
.values{margin:0;padding-left:1.1em;color:var(--ink-2)}

/* Certifications */
.cert-grid{display:grid;gap:26px}
.cert{display:grid;grid-template-columns:220px 1fr;gap:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.cert-thumb{display:block;border:1px solid var(--line);border-radius:6px;overflow:hidden;align-self:start}
.cert-thumb img{width:100%}
.cert-body h2{font-size:1.7rem;margin-bottom:.1em}
.cert-sub{color:var(--grey);margin-bottom:.8em}
.cert dl{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 20px;margin:0 0 .9em}
.cert dt{font-size:.8rem;text-transform:uppercase;letter-spacing:.07em;color:var(--grey);font-weight:600}
.cert dd{margin:0;font-weight:500}
.cert-scope{font-size:.93rem;color:var(--ink-2)}
.cert-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin:0}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:44px;align-items:start}
.contact-list{list-style:none;display:grid;gap:18px;margin:0 0 22px}
.contact-list li{display:flex;gap:14px}
.contact-list .icon{color:var(--amber-d);margin-top:3px}
.contact-list strong{display:block;font-family:var(--font-h);font-size:1.15rem}
.contact-list a{color:var(--ink)}
.social{list-style:none;display:flex;gap:10px;margin:16px 0 0;flex-wrap:wrap}
.social a{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;border:1px solid #4a5056;color:#e8eaec;transition:background .15s,color .15s}
.social a:hover{background:var(--amber);color:var(--ink);border-color:var(--amber)}
.social-light a{border-color:var(--line);color:var(--ink)}
.quote-box{background:#fff;border:1px solid var(--line);border-top:5px solid var(--amber);border-radius:var(--radius);padding:30px}
.form-intro{color:var(--ink-2)}
.field{margin-bottom:16px;flex:1}
.field-row{display:flex;gap:16px}
.field label{display:block;font-weight:600;margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;font:inherit;padding:12px 14px;border:1.5px solid #c4c8cc;border-radius:8px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid rgba(247,169,54,.5);border-color:var(--amber-d)}
.field textarea{resize:vertical}
.has-error input,.has-error textarea{border-color:#b3261e}
.err{color:#b3261e;font-size:.9rem;margin:4px 0 0}
.alert{padding:12px 16px;border-radius:8px;margin-bottom:18px}
.alert-error{background:#fdecea;color:#7a1914;border:1px solid #f1b5b0}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.thanks h2{color:var(--amber-d)}
.map-section{border-top:1px solid var(--line);position:relative}
.map-section iframe{display:block;width:100%;height:420px;border:0}
.map-btn{margin:18px 0}

/* Career */
.job h2{margin-bottom:.4em}
.job h3{margin-top:1.4em}
.job-meta{list-style:none;display:grid;gap:6px;background:var(--soft);border-radius:8px;padding:16px 20px;margin:0 0 1em}
.job-meta strong{display:inline-block;min-width:100px}

/* Footer */
.site-footer{background:var(--dark);color:#c9cdd1}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr 1.3fr;gap:32px;padding-top:54px;padding-bottom:40px}
.footer-logo img{width:150px;height:auto;background:#fff;border-radius:8px;padding:8px}
.footer-h{font-size:1.2rem;color:#fff;letter-spacing:.04em;text-transform:uppercase}
.footer-links{list-style:none;display:grid;gap:8px}
.site-footer a{color:#e8eaec;text-decoration:none}
.site-footer a:hover{color:var(--amber);text-decoration:underline}
.footer-contact p{display:flex;gap:10px;align-items:flex-start;margin-bottom:.8em}
.footer-contact .icon{color:var(--amber);margin-top:3px}
.footer-bottom{border-top:1px solid #3b4046;font-size:.92rem}
.footer-bottom .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:16px;padding-bottom:16px}
.footer-bottom p{margin:0}

/* Floating WhatsApp */
.wa-float{position:fixed;right:18px;bottom:18px;z-index:150;display:flex;align-items:center;gap:10px;background:var(--wa-d);color:#fff;text-decoration:none;border-radius:999px;padding:12px 18px 12px 14px;font-weight:600;box-shadow:0 4px 14px rgba(0,0,0,.28);transition:transform .15s,background .15s}
.wa-float:hover{background:#0f6e37;color:#fff;transform:translateY(-2px)}
.wa-float .icon{width:32px;height:32px}
@media (prefers-reduced-motion:no-preference){
  .wa-float::after{content:"";position:absolute;inset:0;border-radius:inherit;border:2px solid var(--wa);animation:wa-pulse 2.6s ease-out infinite;pointer-events:none}
}
@keyframes wa-pulse{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.35);opacity:0}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Responsive */
@media (max-width:1020px){
  .cat-grid,.pgrid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .facts-grid{grid-template-columns:repeat(2,1fr)}
  .facts-grid>div:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .logo-grid-4{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 20px 20px;gap:0}
  .nav.is-open{display:flex}
  .nav ul{flex-direction:column;align-items:stretch;gap:0}
  .nav a{display:block;padding:14px 4px;border-bottom:1px solid var(--line)}
  .nav a[aria-current="page"]{border-bottom-color:var(--amber)}
  .nav .nav-cta{margin:14px 0 0;text-align:center;border:2px solid transparent}
  .header-inner{position:relative}
  .hero-grid,.split,.pdetail-grid,.contact-grid{grid-template-columns:1fr}
  .hero-grid{padding-top:36px;padding-bottom:36px}
  .topbar-inner{justify-content:center;gap:14px}
  .topbar-addr{display:none}
  .cert{grid-template-columns:1fr}
  .cert-thumb{max-width:260px}
}
@media (max-width:640px){
  body{font-size:16px}
  .section{padding:44px 0}
  .cat-grid,.pgrid,.why-grid,.mvv{grid-template-columns:1fr}
  .ticks-cols,.cert dl{grid-template-columns:1fr}
  .logo-grid-8,.logo-grid-4{grid-template-columns:repeat(2,1fr)}
  .field-row{flex-direction:column;gap:0}
  .quote-box{padding:22px 18px}
  .footer-grid{grid-template-columns:1fr}
  .btn-row .btn{flex:1 1 100%}
  .wa-float-label{display:none}
  .wa-float{padding:12px}
  .facts-grid{grid-template-columns:1fr}
  .facts-grid>div{border-left:0;padding-left:0;border-top:1px solid #3b4046}
  .facts-grid>div:first-child{border-top:0}
  /* Spec tables become stacked cards on phones */
  .spec thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .spec tr{display:block;border-top:1px solid var(--line);padding:8px 0}
  .spec td{display:flex;justify-content:space-between;gap:16px;border:0;padding:5px 16px}
  .spec td::before{content:attr(data-label);font-weight:600;color:var(--grey)}
}
@media (max-width:640px){.spec tbody th{display:block;padding:6px 16px 2px;font-weight:700}}
.spec tbody th{text-align:left;font-weight:600}

/* Videos */
.vgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.vcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.vframe{position:relative;aspect-ratio:16/9;background:#000;display:block}
.vframe iframe,.vframe img{position:absolute;inset:0;width:100%;height:100%;border:0;object-fit:cover}
.vplay{position:absolute;left:50%;top:50%;width:68px;height:48px;margin:-24px 0 0 -34px;background:rgba(31,35,38,.85);border-radius:12px;display:flex;align-items:center;justify-content:center;transition:background .15s}
.vplay::after{content:"";border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.vframe:hover .vplay{background:#c4302b}
.vcard h2,.vcard h3{font-size:1.25rem;margin:0;padding:14px 16px 4px}
.vcard p{margin:0;padding:0 16px 14px;color:var(--grey);font-size:.9rem}
.empty-box{background:var(--soft);border:1px dashed #c4c8cc;border-radius:var(--radius);padding:34px;text-align:center}
@media (max-width:1020px){.vgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.vgrid{grid-template-columns:1fr}}

/* Navigation has nine items now: switch to the menu button earlier */
.nav a{padding:10px 9px;font-size:.98rem}
@media (max-width:1120px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 20px 20px;gap:0;max-height:calc(100vh - 100px);overflow:auto}
  .nav.is-open{display:flex}
  .nav ul{flex-direction:column;align-items:stretch;gap:0}
  .nav a{display:block;padding:14px 4px;border-bottom:1px solid var(--line)}
  .nav .nav-cta{margin:14px 0 0;text-align:center;border:2px solid transparent}
  .header-inner{position:relative}
}

/* About us sub menu */
.subnav{background:#fff;border-bottom:1px solid var(--line)}
.subnav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.subnav a{display:block;white-space:nowrap;padding:14px 16px;font-weight:600;color:var(--ink);text-decoration:none;border-bottom:3px solid transparent}
.subnav a:hover{color:var(--amber-d)}
.subnav a[aria-current="page"]{border-bottom-color:var(--amber)}

/* Videos: tabs and Shorts */
.tabs{display:flex;gap:8px;margin-bottom:26px;flex-wrap:wrap}
.tab{display:inline-flex;align-items:center;gap:8px;font-weight:600;text-decoration:none;color:var(--ink);padding:10px 20px;border-radius:999px;border:1.5px solid var(--line);background:#fff}
.tab span{font-size:.8rem;background:var(--soft);border-radius:99px;padding:1px 8px;color:var(--ink-2)}
.tab:hover{border-color:var(--amber)}
.tab.is-on{background:var(--ink);border-color:var(--ink);color:#fff}
.tab.is-on span{background:var(--amber);color:var(--ink)}
.vgrid-shorts{grid-template-columns:repeat(4,1fr)}
.vframe-short{aspect-ratio:9/16}
@media (max-width:1020px){.vgrid-shorts{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){.vgrid-shorts{grid-template-columns:repeat(2,1fr)}.vgrid-shorts .vcard h2{font-size:1.05rem}}

/* Slideshow: one fixed frame, every picture fitted inside it */
.pcard-wrap,.slides{position:relative}
.pcard-media{position:relative;display:block;aspect-ratio:4/3;padding:0}
.slides-frame{position:relative;aspect-ratio:1/1;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#fff;opacity:0;visibility:hidden;transition:opacity .6s ease,visibility .6s}
.slide.is-active{opacity:1;visibility:visible}
.slide.is-dark{background:var(--dark)}
.slide img{width:100%;height:100%;object-fit:contain;padding:14px}
.slide-btn{position:absolute;top:50%;margin-top:-18px;width:36px;height:36px;border-radius:50%;border:0;background:rgba(31,35,38,.78);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:3;padding:0}
.slide-btn:hover{background:var(--amber);color:var(--ink)}
.slide-prev{left:8px}.slide-prev .icon{transform:rotate(90deg)}
.slide-next{right:8px}.slide-next .icon{transform:rotate(-90deg)}
.slide-dots{position:absolute;left:0;right:0;bottom:8px;display:flex;justify-content:center;gap:6px;z-index:3;pointer-events:none}
.slide-dot{pointer-events:auto;width:10px;height:10px;border-radius:50%;border:1px solid #fff;background:rgba(31,35,38,.45);padding:0;cursor:pointer}
.slide-dot.is-on{background:var(--amber);border-color:var(--ink)}
.pdetail .slide-btn{width:42px;height:42px;margin-top:-21px}
.pdetail .slide-dot{width:12px;height:12px}
@media (hover:hover){.pcard-wrap .slide-btn{opacity:0;transition:opacity .2s}.pcard-wrap:hover .slide-btn,.pcard-wrap:focus-within .slide-btn{opacity:1}}
@media (prefers-reduced-motion:reduce){.slide{transition:none}}

/* Area pages */
.area-box{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.area-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px}
.area-list li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 14px;font-weight:500;font-size:.95rem}
.footer-areas{border-top:1px solid #3b4046;padding:16px 0;font-size:.93rem}
.footer-areas .container{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center}
.footer-areas strong{color:#fff}

/* Installation guide */
.steps{list-style:none;display:grid;gap:34px;margin:30px 0 0}
.gstep{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.gstep:nth-child(even) .gstep-fig{order:2}
.gstep-n{font:700 .95rem var(--font-h);letter-spacing:.1em;text-transform:uppercase;color:var(--amber-d);margin:0 0 .2em}
.gstep h2{font-size:1.8rem}
.mistakes{background:#fdf3e3;border-left:4px solid var(--amber);border-radius:0 8px 8px 0;padding:12px 16px;margin-top:14px}
.mistakes h3{font-size:1.1rem;margin-bottom:.3em}
.mistakes ul{margin:0;padding-left:1.1em;color:var(--ink-2);font-size:.95rem}
.gsvg{display:block;width:100%;height:auto;border-radius:8px;border:1px solid var(--line)}
.g-bg{fill:#fff}.g-soil{fill:#d9c3a5}.g-hole{fill:#f4ede2;stroke:#7a5c3a;stroke-width:2;stroke-dasharray:6 4}
.g-back{fill:#e9eaec;stroke:#9aa0a6}.g-fill{fill:#d9c3a5}.g-ground{stroke:#5a4630;stroke-width:3}
.g-elec{fill:#c0702f;stroke:#7d4415}.g-cap{fill:#7d4415}.g-chamb{fill:#2b2f33}.g-eq{fill:#3b6ea5}.g-bld{fill:#e3e6ea;stroke:#8c9399;stroke-width:2}
.g-drain{fill:#cfe3f2;stroke:#6c9ac0}.g-pit{fill:#c0702f;stroke:#7d4415;stroke-width:2}
.g-strip{stroke:#6b7075;stroke-width:6;fill:none}.g-bolt{fill:#1f2326}.g-lead{stroke:#1f2326;stroke-width:1.5}.g-lead2{stroke:#1f2326;stroke-width:2.5;fill:none}
.g-spike{fill:#6b7075}.g-dim{stroke:#b8650a;stroke-width:2;fill:none}.g-dimf{fill:#b8650a}
.g-t{font:600 14px 'Barlow',sans-serif;fill:#1f2326}.g-s{font-size:13px}.g-mid{text-anchor:middle}.g-w{fill:#fff}
@media (max-width:760px){.gstep{grid-template-columns:1fr}.gstep:nth-child(even) .gstep-fig{order:0}}

/* Blog and Q&A */
.chip.is-on{background:var(--ink);border-color:var(--ink);color:#fff}
a.chip{text-decoration:none;display:inline-block}
.pager{display:flex;gap:8px;justify-content:center;margin-top:32px;flex-wrap:wrap}
.post-thumb{display:block;aspect-ratio:16/9;background:var(--soft);border-bottom:1px solid var(--line);overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.post h1{font-size:clamp(2rem,4.5vw,3rem)}
.post-hero{width:100%;border-radius:var(--radius);margin:1em 0}
.post-body{font-size:1.1rem}
.post-body h2{margin-top:1.6em}
.post-body h3{margin-top:1.3em}
.post-body ul{padding-left:1.2em;margin:0 0 1em}
.post-body li{margin-bottom:.3em}
.callout{border-radius:8px;padding:14px 18px;margin:1.2em 0;border-left:5px solid}
.callout strong{display:block;font:700 1.05rem var(--font-h);letter-spacing:.08em;text-transform:uppercase;margin-bottom:.2em}
.callout p{margin:0}
.callout-myth{background:#fdecea;border-color:#b3261e}.callout-myth strong{color:#b3261e}
.callout-fact{background:#e6f4ea;border-color:#1b7a3a}.callout-fact strong{color:#14602d}
.qa-tools{margin-bottom:22px}
.qa-tools input[type=search]{width:100%;font:inherit;padding:12px 14px;border:1.5px solid #c4c8cc;border-radius:8px;margin-bottom:14px}
.qa-tools .chips{margin-bottom:0}
.qa{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px}
.qa[hidden]{display:none}
.qa summary{cursor:pointer;list-style:none;padding:16px 48px 16px 18px;font:600 1.12rem var(--font);position:relative}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font:600 1.6rem var(--font);color:var(--amber-d)}
.qa[open] summary::after{content:"\2212"}
.qa-a{padding:0 18px 12px;color:var(--ink-2)}
.qa-a p:last-child{margin-bottom:.4em}