/* Tergy — visual system
   References (layout patterns, not a clone):
   - Littelfuse: typographic hierarchy, generous whitespace, crisp product taxonomy
   - Bourns: clear family pages, breadcrumb + spec tables
   - Eaton: confident industrial photography, modular sections, strong CTA bars
   Palette is original: warm ink + copper on paper, not a generic purple/blue theme.
*/
:root{
  --ink:#16120E;
  --ink-2:#241E18;
  --ink-3:#3A332C;
  --paper:#F3EEE6;
  --paper-2:#E8E1D4;
  --cream:#FAF7F2;
  --copper:#C4622D;
  --copper-hot:#E07A3D;
  --copper-deep:#8B3E16;
  --muted:#6F675D;
  --muted-2:#8A8278;
  --line:rgba(22,18,14,.12);
  --line-strong:rgba(22,18,14,.22);
  --white:#FFFCF8;
  --danger:#9B2C1A;
  --ok:#2F6B4F;
  --shadow:0 18px 50px rgba(22,18,14,.14);
  --radius:18px;
  --font-display:"Unbounded","Golos Text",system-ui,sans-serif;
  --font-body:"Golos Text",system-ui,sans-serif;
  --max:1180px;
  --wide:1320px;
  --header:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:var(--copper-deep);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--copper)}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--cream);padding:.6rem 1rem;z-index:100}
.skip:focus{left:1rem;top:1rem}
.wrap{width:min(100% - 2.4rem,var(--max));margin-inline:auto}
.wrap-wide{width:min(100% - 2.4rem,var(--wide));margin-inline:auto}

/* Header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(243,238,230,.88);backdrop-filter:saturate(1.2) blur(16px);border-bottom:1px solid var(--line)}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(22,18,14,.06)}
.hdr{display:flex;align-items:center;justify-content:space-between;gap:1.2rem;min-height:var(--header)}
.logo{display:flex;align-items:center;gap:.7rem;color:var(--ink);text-decoration:none}
.logo svg,.logo img{height:28px;width:auto;display:block}
.logo .word{display:none}
.logo-mark{display:none}
.nav{display:flex;align-items:center;gap:1.35rem}
.nav a{color:var(--ink);text-decoration:none;font-size:.92rem;font-weight:500;letter-spacing:.01em}
.nav a:hover,.nav a[aria-current="page"]{color:var(--copper-deep)}
.nav-cta{display:inline-flex;align-items:center;background:var(--ink);color:var(--cream)!important;text-decoration:none;padding:.55rem 1rem;border-radius:999px;font-weight:600;font-size:.88rem;letter-spacing:.02em}
.nav-cta:hover{background:var(--copper-deep)}
.menu-btn{display:none;background:none;border:0;padding:.4rem;cursor:pointer}
.menu-btn span,.menu-btn span:before,.menu-btn span:after{display:block;width:22px;height:2px;background:var(--ink);position:relative;content:""}
.menu-btn span:before{position:absolute;top:-7px}
.menu-btn span:after{position:absolute;top:7px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.85rem 1.25rem;border-radius:999px;font-weight:600;font-size:.95rem;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;line-height:1}
.btn-primary{background:var(--copper);color:var(--white);border-color:var(--copper)}
.btn-primary:hover{background:var(--copper-deep);color:var(--white)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
.btn-light{background:var(--cream);color:var(--ink)}
.btn-light:hover{background:var(--white)}
.btn-row{display:flex;flex-wrap:wrap;gap:.7rem}

/* Hero */
.hero{position:relative;min-height:calc(100vh - var(--header));display:grid;align-items:stretch;background:var(--ink);color:var(--cream);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;min-height:inherit}
.hero-copy{padding:clamp(2.4rem,6vw,5.5rem) 0;display:flex;flex-direction:column;justify-content:center}
.eyebrow{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--copper-hot);font-weight:600;margin:0 0 1.1rem}
.hero h1{font-family:var(--font-display);font-weight:700;letter-spacing:-.03em;line-height:1.05;font-size:clamp(2.15rem,5.4vw,4.6rem);margin:0 0 1.3rem;color:var(--cream)}
.hero .lead{font-size:clamp(1.05rem,1.5vw,1.22rem);max-width:38rem;color:rgba(250,247,242,.82);margin:0 0 1.8rem}
.hero-claims{display:grid;grid-template-columns:1fr 1fr;gap:1rem 1.5rem;margin:1.6rem 0 2rem;max-width:36rem}
.hero-claims dt{font-family:var(--font-display);font-size:1.15rem;color:var(--copper-hot);letter-spacing:-.02em}
.hero-claims dd{margin:0;color:rgba(250,247,242,.78);font-size:.95rem}
.hero-visual{position:relative;min-height:420px}
.hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--ink) 0%,rgba(22,18,14,.15) 28%,transparent 55%)}

/* Sections */
section{padding:clamp(3.2rem,7vw,6.2rem) 0}
.sec-kicker{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--copper-deep);font-weight:600;margin:0 0 .6rem}
h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-.03em;line-height:1.12;font-weight:600;margin:0 0 .8rem}
h1{font-size:clamp(2rem,4.2vw,3.4rem)}
h2{font-size:clamp(1.6rem,3vw,2.45rem)}
h3{font-size:1.25rem}
.lede{font-size:1.15rem;color:var(--ink-3);max-width:44rem;margin:0 0 2rem}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:1.4rem;margin-bottom:2rem}
.sec-head p{margin:0;color:var(--muted);max-width:28rem}

/* Cards / grids */
.cat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem}
.cat-card{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:inherit;display:flex;flex-direction:column;min-height:100%;transition:transform .25s ease, box-shadow .25s ease}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);color:inherit}
.cat-card figure{margin:0;aspect-ratio:4/3;background:var(--paper-2);overflow:hidden}
.cat-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover img{transform:scale(1.04)}
.cat-card .body{padding:1rem 1.05rem 1.15rem;display:flex;flex-direction:column;gap:.25rem;flex:1}
.cat-card h3{font-size:1.02rem;margin:0}
.cat-card p{margin:0;color:var(--muted);font-size:.86rem}
.cat-card .count{margin-top:auto;padding-top:.7rem;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--copper-deep)}

.claim-band{background:var(--ink);color:var(--cream);padding:clamp(2.4rem,5vw,4rem) 0}
.claim-band h2{color:var(--cream);max-width:18ch}
.claim-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:2rem;align-items:start}
.claim-item{border-top:1px solid rgba(250,247,242,.16);padding-top:1.1rem}
.claim-item strong{display:block;font-family:var(--font-display);font-size:1.7rem;color:var(--copper-hot);letter-spacing:-.03em;margin-bottom:.4rem}
.claim-item p{margin:0;color:rgba(250,247,242,.8)}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(1.5rem,4vw,3.2rem);align-items:center}
.split img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius);min-height:320px;max-height:520px}
.split.reverse{grid-template-columns:.95fr 1.05fr}
.split.reverse .copy{order:2}

.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.app-card{background:var(--ink-2);color:var(--cream);border-radius:var(--radius);padding:1.3rem 1.25rem 1.4rem;text-decoration:none;min-height:11.5rem;display:flex;flex-direction:column;justify-content:space-between}
.app-card:hover{background:var(--ink);color:var(--cream)}
.app-card h3{color:var(--cream);font-size:1.15rem}
.app-card p{margin:0;color:rgba(250,247,242,.7);font-size:.9rem}
.app-card span{font-size:.78rem;color:var(--copper-hot);letter-spacing:.06em;text-transform:uppercase}

.res-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.res-card{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem 1.25rem;text-decoration:none;color:inherit}
.res-card:hover{border-color:var(--copper);color:inherit}
.res-card .meta{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--copper-deep);margin-bottom:.5rem}
.res-card p{margin:.4rem 0 0;color:var(--muted);font-size:.92rem}

/* Page hero */
.page-hero{padding:clamp(2.4rem,5vw,4.2rem) 0 2rem;border-bottom:1px solid var(--line)}
.crumbs{display:flex;flex-wrap:wrap;gap:.4rem;font-size:.86rem;color:var(--muted);margin:0 0 1rem}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--copper-deep)}
.crumbs span{opacity:.5}

/* Product tables / lists */
.spec{width:100%;border-collapse:collapse;font-size:.95rem}
.spec th,.spec td{text-align:left;padding:.7rem .4rem;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{color:var(--muted);font-weight:500;width:42%;font-size:.88rem}
.chip-list{display:flex;flex-wrap:wrap;gap:.4rem;margin:1rem 0 0;padding:0;list-style:none}
.chip-list li{background:var(--paper-2);padding:.28rem .65rem;border-radius:999px;font-size:.82rem}

.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.series-card{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);padding:1.15rem 1.15rem 1.2rem;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:.4rem}
.series-card:hover{border-color:var(--copper);color:inherit}
.series-card h3{font-size:1.15rem;margin:0}
.series-card .pkg{color:var(--muted);font-size:.86rem}
.series-card ul{margin:.4rem 0 0;padding:0;list-style:none;font-size:.88rem;color:var(--ink-3)}
.series-card li+li{margin-top:.15rem}
.thin-note{font-size:.84rem;color:var(--muted);font-style:italic}

.detail{display:grid;grid-template-columns:.82fr 1.18fr;gap:2rem;align-items:start;padding-top:2.4rem}
.detail-media{position:sticky;top:calc(var(--header) + 1.2rem)}
.detail-media img{border-radius:var(--radius);width:100%;background:var(--paper-2)}
.detail-media .cap{font-size:.82rem;color:var(--muted);margin-top:.6rem}

.cta-bar{background:var(--ink);color:var(--cream);padding:clamp(2.2rem,4vw,3.2rem) 0;margin-top:3rem}
.cta-bar h2{color:var(--cream)}
.cta-bar p{color:rgba(250,247,242,.78);max-width:36rem}

/* Forms */
form.inquiry{display:grid;gap:.9rem;max-width:40rem}
label{display:block;font-size:.86rem;font-weight:600;margin-bottom:.3rem}
input,select,textarea{width:100%;font:inherit;color:var(--ink);background:var(--cream);border:1px solid var(--line-strong);border-radius:12px;padding:.7rem .8rem}
textarea{min-height:8rem;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:.9rem}
.form-note{font-size:.86rem;color:var(--muted)}
.form-ok{display:none;background:#e8f3ec;border:1px solid #b7d6c4;color:var(--ok);padding:.8rem 1rem;border-radius:12px}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:2.4rem;align-items:start}
.contact-dl{margin:0}
.contact-dl div{display:grid;grid-template-columns:8.5rem 1fr;gap:.6rem;padding:.7rem 0;border-bottom:1px solid var(--line)}
.contact-dl dt{color:var(--muted);font-weight:500}
.contact-dl dd{margin:0}
.contact-dl a{color:inherit;text-decoration:none}
.contact-dl a:hover{color:var(--copper-deep)}

/* Article */
.prose{max-width:44rem}
.prose p{margin:0 0 1rem}
.prose h2{margin:2rem 0 .8rem}
.prose h3{margin:1.4rem 0 .5rem}
.prose ul,.prose ol{margin:0 0 1rem;padding-left:1.2rem}
.prose li+li{margin-top:.25rem}
.prose blockquote{margin:1.4rem 0;padding:0 0 0 1.1rem;border-left:3px solid var(--copper);color:var(--ink-3)}

/* Footer */
.site-footer{background:var(--ink);color:rgba(250,247,242,.78);padding:3.2rem 0 2rem;margin-top:0}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2rem}
.site-footer a{color:rgba(250,247,242,.86);text-decoration:none}
.site-footer a:hover{color:var(--copper-hot)}
.site-footer h2,.site-footer h3{color:var(--cream);font-size:.95rem;letter-spacing:.08em;text-transform:uppercase;margin:0 0 1rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li+li{margin-top:.4rem}
.ft-brand p{max-width:22rem}
.ft-legal{margin-top:2.4rem;padding-top:1.2rem;border-top:1px solid rgba(250,247,242,.12);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.82rem;color:rgba(250,247,242,.55)}
.footer-logo{color:var(--cream);margin-bottom:1rem;display:inline-block}
.footer-logo svg,.footer-logo img{height:26px;width:auto}

/* 404 */
.err{min-height:60vh;display:grid;place-items:center;text-align:center;padding:4rem 1rem}
.err p.big{font-family:var(--font-display);font-size:clamp(4rem,12vw,8rem);letter-spacing:-.05em;color:var(--copper);margin:0}

/* Filter */
.filter{display:flex;flex-wrap:wrap;gap:.5rem;margin:0 0 1.6rem}
.filter button{border:1px solid var(--line-strong);background:transparent;border-radius:999px;padding:.35rem .8rem;font:inherit;font-size:.86rem;cursor:pointer;color:var(--ink)}
.filter button[aria-pressed="true"],.filter button:hover{background:var(--ink);color:var(--cream);border-color:var(--ink)}
.search{width:min(100%,22rem);margin:0 0 1.4rem}
#series-q{width:100%}

@media (max-width:1100px){
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .claim-grid,.hero-grid,.split,.split.reverse,.detail,.contact-grid,.ft-grid{grid-template-columns:1fr}
  .split.reverse .copy{order:0}
  .hero-visual{min-height:320px}
  .hero-visual:after{background:linear-gradient(180deg,var(--ink) 0%,rgba(22,18,14,.2) 30%,transparent 55%)}
  .hero-grid{grid-template-columns:1fr}
  .detail-media{position:static}
  .app-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:780px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:var(--header);background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;padding:1rem 1.2rem 1.3rem;gap:.85rem}
  .nav.open{display:flex}
  .cat-grid,.series-grid,.res-grid{grid-template-columns:1fr 1fr}
  .hero-claims,.form-row{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .cat-grid,.series-grid,.res-grid,.app-grid{grid-template-columns:1fr}
  html,body{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto;transition:none!important}
}