/* ============================================================
   Master Industrial Panel Wiring & Motor Control — Landing page
   Stylesheet: assets/css/style.css
   Palette: Industrial Blue #0057A8 / Electrical Yellow #FFC400
   ============================================================ */

:root{
  --blue:#0057A8;
  --blue-dark:#003D76;
  --blue-deep:#10233C;
  --blue-tint:#EAF1F9;
  --yellow:#FFC400;
  --yellow-dark:#E0A400;
  --ink:#10233C;
  --ink-soft:#4B5C71;
  --grey:#F4F6F8;
  --grey-2:#EDF0F4;
  --line:#DCE3EB;
  --white:#fff;
  --green:#1C8C4A;
  --red:#C1362B;
  --shadow-sm:0 1px 2px rgba(16,35,60,.06), 0 2px 8px rgba(16,35,60,.05);
  --shadow-md:0 10px 30px rgba(16,35,60,.10);
  --shadow-lg:0 24px 60px rgba(16,35,60,.22);
  --radius:6px;
  --container:1140px;
  --pad:clamp(20px,4vw,32px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:76px}
body{
  margin:0;
  background:var(--white);
  color:var(--ink);
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
:focus-visible{outline:3px solid var(--yellow);outline-offset:3px;border-radius:3px}

/* ---------- Type ---------- */
h1,h2,h3,h4,.spec__num,.price__now,.chapter__no{
  font-family:"Barlow Condensed","Barlow",Impact,system-ui,sans-serif;
  font-weight:700;
  letter-spacing:.005em;
  line-height:1.06;
  margin:0;
  text-wrap:balance;
}
h1{font-size:clamp(2.3rem,6.4vw,4.05rem)}
h2{font-size:clamp(1.95rem,4.6vw,3rem)}
h3{font-size:clamp(1.3rem,2.6vw,1.6rem);line-height:1.18}
h4{font-size:1.16rem;line-height:1.25}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
strong{font-weight:600;color:var(--ink)}
.lead{font-size:clamp(1.02rem,2vw,1.2rem);color:var(--ink-soft);line-height:1.6}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--pad)}
.section{padding-block:clamp(56px,7.5vw,96px)}
.section--grey{background:var(--grey);border-block:1px solid var(--line)}
.section--blue{background:var(--blue-deep);color:#E8EEF5}
.section--blue h2,.section--blue h3{color:#fff}
.section--tint{background:var(--blue-tint)}
.section__head{max-width:730px;margin-bottom:clamp(30px,4vw,48px)}
.section__head--center{margin-inline:auto;text-align:center}
.section__head p{margin-top:14px;color:var(--ink-soft)}
.section--blue .section__head p{color:#B9C8DA}
.rule{width:56px;height:5px;background:var(--yellow);margin-bottom:20px;border-radius:2px}
.section__head--center .rule{margin-inline:auto}

.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* Hazard rail — the one decorative motif, used sparingly */
.rail{
  height:8px;
  background:repeating-linear-gradient(115deg,var(--yellow) 0 22px,#12233C 22px 44px);
}

/* ---------- Buttons ---------- */
.btn{
  --btn-bg:var(--yellow);
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  background:var(--btn-bg);color:#10233C;
  font-family:"Barlow Condensed","Barlow",sans-serif;
  font-size:1.34rem;font-weight:700;letter-spacing:.02em;
  padding:16px 30px 15px;border:0;border-radius:var(--radius);
  box-shadow:0 4px 0 var(--yellow-dark), var(--shadow-md);
  cursor:pointer;transition:transform .12s ease, box-shadow .12s ease, background .2s ease;
  text-align:center;
}
.btn:hover{background:#FFCE26;transform:translateY(-2px);box-shadow:0 6px 0 var(--yellow-dark), var(--shadow-md)}
.btn:active{transform:translateY(2px);box-shadow:0 2px 0 var(--yellow-dark)}
.btn--block{display:flex;width:100%}
.btn--lg{font-size:1.5rem;padding:19px 38px 18px}
.btn--ghost{
  background:transparent;color:#fff;border:2px solid rgba(255,255,255,.55);
  box-shadow:none;font-size:1.1rem;padding:12px 22px
}
.btn--ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;box-shadow:none}
.btn__sub{display:block;font-family:"Inter",sans-serif;font-size:.72rem;font-weight:500;letter-spacing:0;opacity:.75}
.btn-note{margin-top:12px;font-size:.88rem;color:var(--ink-soft)}
.section--blue .btn-note{color:#A9BACE}

/* ---------- Header ---------- */
.header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
}
.header__in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink)}
.brand__mark{
  width:36px;height:36px;border-radius:5px;background:var(--blue);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand__mark svg{width:21px;height:21px}
.brand__name{font-family:"Barlow Condensed",sans-serif;font-weight:700;font-size:1.18rem;line-height:1.05}
.brand__sub{display:block;font-family:"Inter",sans-serif;font-size:.68rem;font-weight:500;color:var(--ink-soft);letter-spacing:.06em}
.header__cta{
  opacity:0;transform:translateY(-6px);pointer-events:none;
  transition:opacity .25s ease,transform .25s ease;
  font-size:1.05rem;padding:10px 20px;box-shadow:0 3px 0 var(--yellow-dark)
}
.header.is-scrolled .header__cta{opacity:1;transform:none;pointer-events:auto}
@media(max-width:560px){.header__cta{display:none}.brand__sub{display:none}}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;
  background:var(--blue-deep);
  overflow:hidden;
}
picture{display:block}
.hero__bg{position:absolute;inset:0}
.hero__bg picture{position:absolute;inset:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;object-position:60% 40%}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,26,48,.96) 0 38%,rgba(10,26,48,.86) 56%,rgba(10,26,48,.62) 100%);
}
.hero__in{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(24px,4vw,56px);align-items:center;
  padding-block:clamp(40px,6vw,74px)}
.hero h1{color:#fff}
.hero h1 em{font-style:normal;color:var(--yellow);display:block}
.hero__sub{margin-top:18px;font-size:clamp(1.02rem,1.9vw,1.2rem);color:#C9D7E6;max-width:34em;line-height:1.55}
.hero__tag{
  display:inline-flex;align-items:center;gap:9px;margin-bottom:18px;
  background:rgba(255,196,0,.14);border:1px solid rgba(255,196,0,.4);
  color:var(--yellow);border-radius:100px;padding:6px 15px;
  font-size:.82rem;font-weight:600;letter-spacing:.02em
}
.hero__tag b{color:#fff;font-weight:600}
.hero__cta{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero__price{display:flex;align-items:baseline;gap:10px;margin-top:22px}
.hero__price .was{color:#93A6BC;text-decoration:line-through;font-size:1.05rem}
.hero__price .now{font-family:"Barlow Condensed",sans-serif;font-size:2.5rem;font-weight:700;color:#fff;line-height:1}
.hero__price .off{background:var(--yellow);color:#10233C;font-weight:700;font-size:.8rem;padding:4px 9px;border-radius:4px}
.hero__trust{margin-top:20px;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:.87rem;color:#B6C6D8}
.hero__trust span{display:inline-flex;align-items:center;gap:7px}
.hero__trust svg{width:16px;height:16px;color:var(--yellow);flex:0 0 auto}

/* Specs strip */
.specs{position:relative;background:#fff;border-top:4px solid var(--yellow)}
.specs__in{display:grid;grid-template-columns:repeat(4,1fr)}
.spec{padding:22px 24px;border-left:1px solid var(--line)}
.spec:first-child{border-left:0}
.spec__num{display:block;font-size:2.05rem;color:var(--blue);line-height:1}
.spec__label{font-size:.9rem;color:var(--ink-soft);margin-top:4px;display:block}
@media(max-width:780px){.specs__in{grid-template-columns:repeat(2,1fr)}
  .spec{border-top:1px solid var(--line);padding:16px 18px}
  .spec:nth-child(-n+2){border-top:0}.spec:nth-child(odd){border-left:0}}

/* Book mockup */
.book{position:relative;justify-self:center;max-width:390px;width:100%}
.book img{border-radius:3px;box-shadow:var(--shadow-lg);position:relative;z-index:2}
.book::before{
  content:"";position:absolute;inset:auto -18px -18px auto;width:78%;height:72%;
  background:var(--yellow);border-radius:4px;z-index:1;
}
.book__seal{
  position:absolute;z-index:3;left:-16px;top:-16px;
  background:var(--white);color:var(--blue-deep);border-radius:50%;
  width:98px;height:98px;display:grid;place-content:center;text-align:center;
  box-shadow:var(--shadow-md);border:3px solid var(--yellow);line-height:1.1
}
.book__seal b{font-family:"Barlow Condensed",sans-serif;font-size:1.65rem;display:block}
.book__seal span{font-size:.64rem;font-weight:600;color:var(--ink-soft)}
@media(max-width:860px){
  .hero__in{grid-template-columns:1fr;text-align:left}
  .book{max-width:290px;margin-top:6px}
  .book__seal{width:84px;height:84px}
}

/* ---------- Cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);height:100%
}
.card h3,.card h4{margin-bottom:9px}
.card p{font-size:.97rem;color:var(--ink-soft);margin:0}
.card__icon{
  width:46px;height:46px;border-radius:5px;background:var(--blue-tint);color:var(--blue);
  display:grid;place-items:center;margin-bottom:16px
}
.card__icon svg{width:24px;height:24px}
.card--pain{border-left:4px solid var(--red);background:#fff}
.card--pain h4{color:var(--ink)}
.card--fix{border-left:4px solid var(--green)}
.card--num{display:flex;gap:16px;align-items:flex-start}

/* Problem / solution split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(22px,4vw,54px);align-items:center}
@media(max-width:860px){.split{grid-template-columns:1fr}}
.split__media img{border-radius:var(--radius);box-shadow:var(--shadow-md)}
.figure{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.figure figcaption{
  position:absolute;left:0;bottom:0;right:0;padding:14px 16px;font-size:.84rem;color:#fff;
  background:linear-gradient(transparent,rgba(10,26,48,.88))
}

/* Checklist */
.checks{list-style:none;margin:0;padding:0;display:grid;gap:13px}
.checks li{display:flex;gap:12px;align-items:flex-start;font-size:1rem}
.checks svg{width:21px;height:21px;color:var(--blue);flex:0 0 auto;margin-top:2px}
.section--blue .checks svg{color:var(--yellow)}
.checks--2{grid-template-columns:1fr 1fr;gap:13px 28px}
@media(max-width:700px){.checks--2{grid-template-columns:1fr}}

/* ---------- Preview / flipbook ---------- */
.preview{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,4vw,50px);align-items:center}
@media(max-width:860px){.preview{grid-template-columns:1fr}}
.preview__frame{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow-md)
}
.preview__frame video{width:100%;border-radius:4px;display:block;background:var(--grey-2)}
.preview__caption{font-size:.85rem;color:var(--ink-soft);margin-top:10px;text-align:center}
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.thumbs img{border-radius:4px;border:1px solid var(--line);width:100%;aspect-ratio:4/3;object-fit:cover}

/* ---------- Chapter table ---------- */
.chapters{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.chapter{display:grid;grid-template-columns:70px 1fr;gap:0;border-top:1px solid var(--line)}
.chapter:first-child{border-top:0}
.chapter__no{
  background:var(--blue-tint);color:var(--blue);display:grid;place-items:center;
  font-size:1.5rem;border-right:1px solid var(--line)
}
.chapter__body{padding:18px 22px}
.chapter__body h4{margin-bottom:5px}
.chapter__body p{font-size:.94rem;color:var(--ink-soft);margin:0}
@media(max-width:520px){.chapter{grid-template-columns:52px 1fr}.chapter__body{padding:14px 16px}}

/* ---------- Components grid ---------- */
.comp{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 18px;text-align:left;box-shadow:var(--shadow-sm);
  border-top:3px solid var(--blue)
}
.comp h4{font-size:1.05rem;margin-bottom:6px}
.comp p{font-size:.89rem;color:var(--ink-soft);margin:0}
.comp svg{width:26px;height:26px;color:var(--blue);margin-bottom:12px}

/* ---------- Starter table ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{border-collapse:collapse;width:100%;min-width:620px;font-size:.95rem}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
thead th{
  background:var(--blue);color:#fff;font-family:"Barlow Condensed",sans-serif;
  font-size:1.1rem;font-weight:600;letter-spacing:.02em;border-bottom:0
}
tbody tr:nth-child(even){background:var(--grey)}
tbody tr:last-child td{border-bottom:0}
td:first-child{font-weight:600}

/* ---------- Troubleshooting ---------- */
.fault{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--yellow);
  border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow-sm)
}
.fault h4{margin-bottom:10px}
.fault dl{margin:0;display:grid;gap:8px}
.fault dt{font-size:.78rem;font-weight:700;color:var(--blue);letter-spacing:.04em}
.fault dd{margin:0 0 6px;font-size:.95rem;color:var(--ink-soft)}

/* ---------- Audience ---------- */
.aud{
  display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)
}
.aud svg{width:26px;height:26px;color:var(--blue);flex:0 0 auto;margin-top:2px}
.aud h4{font-size:1.04rem;margin-bottom:4px}
.aud p{font-size:.9rem;color:var(--ink-soft);margin:0}

/* ---------- Bonus ---------- */
.bonus{
  display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(24px,4vw,48px);align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:8px;padding:clamp(22px,3.4vw,40px);
  box-shadow:var(--shadow-md);position:relative;overflow:hidden
}
.bonus::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--yellow)}
@media(max-width:800px){.bonus{grid-template-columns:1fr}}
.bonus__img{max-width:290px;justify-self:center}
.bonus__img img{border-radius:3px;box-shadow:var(--shadow-lg)}
.badge{
  display:inline-block;background:var(--yellow);color:#10233C;font-weight:700;
  font-size:.78rem;letter-spacing:.05em;padding:5px 12px;border-radius:4px;margin-bottom:14px
}
.bonus__price{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:20px 0;
  padding:16px 18px;background:var(--grey);border-radius:var(--radius);border:1px dashed var(--line)
}
.bonus__price .free{font-family:"Barlow Condensed",sans-serif;font-size:1.9rem;color:var(--green);line-height:1}
.bonus__price s{color:var(--ink-soft)}

/* ---------- Testimonials ---------- */
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:14px;height:100%
}
.quote p{font-size:.99rem;margin:0;color:var(--ink)}
.stars{display:flex;gap:2px;color:var(--yellow)}
.stars svg{width:17px;height:17px}
.quote__by{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.avatar{
  width:42px;height:42px;border-radius:50%;background:var(--blue);color:#fff;
  display:grid;place-items:center;font-weight:600;font-size:.95rem;flex:0 0 auto
}
.quote__by b{display:block;font-size:.95rem;font-weight:600}
.quote__by span{font-size:.83rem;color:var(--ink-soft)}

/* ---------- Pricing card ---------- */
.pricebox{
  background:#fff;border:2px solid var(--blue);border-radius:8px;overflow:hidden;
  box-shadow:var(--shadow-lg);max-width:560px;margin-inline:auto;color:var(--ink)
}
.pricebox__top{background:var(--blue);color:#fff;padding:16px 24px;text-align:center}
.pricebox__top h3{color:#fff;font-size:1.5rem}
.pricebox__top p{margin:4px 0 0;font-size:.88rem;color:#CBDDF0}
.pricebox__body{padding:clamp(22px,3vw,32px)}
.pricelines{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:10px;font-size:.97rem}
.pricelines li{display:flex;justify-content:space-between;gap:16px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.pricelines li span:last-child{white-space:nowrap;color:var(--ink-soft)}
.pricelines li.total{border-bottom:0;font-weight:700;font-size:1.1rem;padding-top:4px}
.pricelines li.total span:last-child{color:var(--blue);font-family:"Barlow Condensed",sans-serif;font-size:1.9rem;line-height:1}
.pricebox__foot{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:center;margin-top:16px;font-size:.84rem;color:var(--ink-soft)}
.pricebox__foot span{display:inline-flex;gap:6px;align-items:center}
.pricebox__foot svg{width:15px;height:15px;color:var(--green)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin-inline:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.faq details{border-top:1px solid var(--line)}
.faq details:first-of-type{border-top:0}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 54px 18px 22px;position:relative;
  font-weight:600;font-size:1.02rem
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:22px;top:24px;width:11px;height:11px;
  border-right:2.5px solid var(--blue);border-bottom:2.5px solid var(--blue);
  transform:rotate(45deg);transition:transform .2s ease
}
.faq details[open] summary::after{transform:rotate(-135deg);top:27px}
.faq details[open] summary{color:var(--blue)}
.faq .answer{padding:0 22px 20px;color:var(--ink-soft);font-size:.97rem}

/* ---------- Final CTA ---------- */
.final{background:var(--blue-deep);color:#fff;text-align:center;position:relative;overflow:hidden}
.final h2{color:#fff}
.final .lead{color:#BCCBDC}

/* ---------- Footer ---------- */
.footer{background:#0B1A2E;color:#93A6BC;font-size:.88rem;padding:38px 0 30px}
.footer a{color:#C9D7E6}
.footer__in{display:flex;flex-wrap:wrap;gap:18px 40px;justify-content:space-between}
.footer__links{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer p{margin:0 0 8px;max-width:60ch}

/* ---------- Sticky mobile CTA ---------- */
.stickybar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(16,35,60,.14);
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  display:flex;align-items:center;gap:14px;
  transform:translateY(120%);transition:transform .28s ease
}
.stickybar.is-visible{transform:none}
.stickybar__price{line-height:1.15;flex:0 0 auto}
.stickybar__price b{font-family:"Barlow Condensed",sans-serif;font-size:1.55rem;display:block}
.stickybar__price s{font-size:.78rem;color:var(--ink-soft)}
.stickybar .btn{flex:1;font-size:1.15rem;padding:13px 16px}
@media(min-width:861px){.stickybar{display:none}}
body.has-stickybar{padding-bottom:78px}
@media(min-width:861px){body.has-stickybar{padding-bottom:0}}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn{transition:none}
  .btn:hover{transform:none}
}

/* ---------- Utilities ---------- */
.center{text-align:center}
.mt-24{margin-top:24px}
.mt-32{margin-top:32px}
.muted{color:var(--ink-soft)}
.small{font-size:.86rem}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}