/* ============================================================
   AluminaPCB — Ceramic PCB Manufacturer
   Design system. Petrol/slate + copper on ceramic off-white.
   ============================================================ */

:root{
  /* Ceramic off-white surfaces */
  --paper:#f6f8f9;
  --paper-2:#eef2f4;
  --white:#ffffff;

  /* Ink — deep petrol slate */
  --ink:#0d1b24;
  --ink-2:#25404d;
  --ink-3:#4a6572;
  --line:#d8e0e4;
  --line-2:#c3ced4;

  /* Brand — petrol / teal */
  --brand:#0e4c5c;
  --brand-2:#0a6d7f;
  --brand-ghost:#e3eef1;

  /* Copper accent — the metallization / thermal cue */
  --copper:#b5622c;
  --copper-2:#d07a3c;
  --copper-ghost:#f6e9df;

  --ok:#1f8a5b;

  --r-sm:6px;
  --r:10px;
  --r-lg:16px;

  --shadow-sm:0 1px 2px rgba(13,27,36,.06);
  --shadow:0 8px 30px rgba(13,27,36,.10);
  --shadow-lg:0 24px 60px rgba(13,27,36,.16);

  --wrap:1200px;
  --font-display:"Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body:"Inter", "Segoe UI", system-ui, sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum" 0;
}
img{max-width:100%;display:block}
a{color:var(--brand-2);text-decoration:none}
a:hover{color:var(--copper)}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.12;color:var(--ink);margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,4.4vw,3.5rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:56px 0}
.bg-white{background:var(--white)}
.bg-ink{background:var(--ink);color:#cddae1}
.bg-ink h1,.bg-ink h2,.bg-ink h3{color:#fff}
.bg-paper2{background:var(--paper-2)}

.lede{font-size:1.18rem;color:var(--ink-2);max-width:62ch}
.muted{color:var(--ink-3)}
.center{text-align:center}
.mx-auto{margin-left:auto;margin-right:auto}

.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);font-size:.82rem;font-weight:600;
  color:var(--copper);letter-spacing:.02em;margin-bottom:14px;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--copper);border-radius:2px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  font-family:var(--font-display);font-weight:600;font-size:.98rem;
  padding:13px 24px;border-radius:var(--r);border:1.5px solid transparent;
  cursor:pointer;transition:transform .15s ease, background .2s, box-shadow .2s;
  line-height:1;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--copper);color:#fff;border-color:var(--copper)}
.btn--primary:hover{background:var(--copper-2);color:#fff;box-shadow:0 10px 24px rgba(181,98,44,.28)}
.btn--brand{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn--brand:hover{background:var(--brand-2);color:#fff}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn--light{background:#fff;color:var(--ink);border-color:#fff}
.btn--light:hover{color:var(--copper)}
.btn--lg{padding:16px 30px;font-size:1.05rem}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,248,249,.86);
  backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:1.16rem;color:var(--ink);letter-spacing:-.02em}
.brand:hover{color:var(--ink)}
.brand__mark{width:34px;height:34px;flex:0 0 34px}
.brand small{display:block;font-family:var(--font-body);font-weight:500;font-size:.62rem;letter-spacing:.14em;color:var(--copper);text-transform:uppercase;margin-top:1px}
.nav__links{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav__links a{
  color:var(--ink-2);font-weight:500;font-size:.96rem;padding:9px 14px;border-radius:8px;position:relative;
}
.nav__links a:hover{color:var(--brand);background:var(--brand-ghost)}
.nav__cta{margin-left:8px}
.nav__toggle{display:none;margin-left:auto;background:none;border:1.5px solid var(--line-2);border-radius:8px;width:44px;height:44px;cursor:pointer}
.nav__toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(1200px 500px at 82% -10%, rgba(10,109,127,.10), transparent 60%),
  linear-gradient(180deg,var(--white),var(--paper))}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:76px 0 84px}
.hero h1{margin-bottom:.35em}
.hero__sub{font-size:1.22rem;color:var(--ink-2);max-width:52ch;margin-bottom:28px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero__stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;border-top:1px solid var(--line);padding-top:24px;max-width:520px}
.stat__num{font-family:var(--font-display);font-weight:700;font-size:1.9rem;color:var(--brand);line-height:1}
.stat__num b{color:var(--copper);font-weight:700}
.stat__lbl{font-size:.82rem;color:var(--ink-3);margin-top:6px}
.hero__panel{position:relative}
.hero__panel svg{width:100%;height:auto;filter:drop-shadow(0 30px 50px rgba(13,27,36,.18))}
.hero__chip{position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 15px;box-shadow:var(--shadow);font-family:var(--font-display);font-weight:600;font-size:.9rem}
.hero__chip small{display:block;font-family:var(--font-body);font-weight:500;color:var(--ink-3);font-size:.72rem}
.hero__chip .hot{color:var(--copper)}

/* ---------- Trust bar ---------- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white)}
.trust__row{display:flex;align-items:center;gap:28px;flex-wrap:wrap;padding:20px 0;justify-content:space-between}
.trust__label{font-size:.82rem;color:var(--ink-3);font-weight:600}
.trust__badges{display:flex;gap:22px;flex-wrap:wrap;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:600;color:var(--ink-2);font-size:.92rem}
.badge svg{width:20px;height:20px;color:var(--brand)}

/* ---------- Cards ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;transition:border-color .2s, box-shadow .2s, transform .2s}
.card:hover{border-color:var(--line-2);box-shadow:var(--shadow)}
.card h3{margin-bottom:.4em}
.card__ico{width:46px;height:46px;border-radius:11px;display:grid;place-items:center;background:var(--brand-ghost);color:var(--brand);margin-bottom:16px}
.card__ico svg{width:24px;height:24px}
.card__ico--copper{background:var(--copper-ghost);color:var(--copper)}
.card p{color:var(--ink-2);font-size:.96rem;margin-bottom:0}
.card__link{display:inline-flex;gap:6px;align-items:center;margin-top:16px;font-family:var(--font-display);font-weight:600;font-size:.92rem;color:var(--brand)}
.card__link:hover{gap:10px}

/* Section heads */
.shead{max-width:660px;margin-bottom:44px}
.shead--center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- Material comparison (signature) ---------- */
.matcompare{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.mattabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.mattab{font-family:var(--font-display);font-weight:600;font-size:.9rem;padding:9px 15px;border-radius:99px;border:1.5px solid var(--line-2);background:#fff;color:var(--ink-2);cursor:pointer;transition:.15s}
.mattab[aria-selected="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.matpanel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-sm)}
.matpanel h3{display:flex;align-items:baseline;gap:10px}
.matpanel h3 span{font-family:var(--font-body);font-weight:500;font-size:.9rem;color:var(--ink-3)}
.matspecs{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:0}
.matspecs li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-top:1px dashed var(--line);font-size:.95rem}
.matspecs li b{font-family:var(--font-display);color:var(--ink)}
.mattag{display:inline-block;background:var(--copper-ghost);color:var(--copper);font-weight:600;font-size:.78rem;padding:4px 10px;border-radius:99px;font-family:var(--font-display)}

.tcbars{display:grid;gap:16px}
.tcbar__top{display:flex;justify-content:space-between;font-size:.9rem;margin-bottom:6px}
.tcbar__top b{font-family:var(--font-display)}
.tcbar__track{height:14px;background:var(--paper-2);border-radius:99px;overflow:hidden}
.tcbar__fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--brand-2));width:0;transition:width 1s cubic-bezier(.2,.7,.2,1)}
.tcbar__fill.is-hot{background:linear-gradient(90deg,var(--copper),var(--copper-2))}
.tccap{font-size:.82rem;color:var(--ink-3);margin-top:14px}

/* ---------- Spec table ---------- */
.spectable{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;font-size:.95rem}
.spectable th,.spectable td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line)}
.spectable thead th{background:var(--ink);color:#fff;font-family:var(--font-display);font-weight:600;font-size:.9rem}
.spectable tbody tr:last-child td{border-bottom:none}
.spectable tbody tr:hover{background:var(--paper)}
.spectable td:first-child{font-weight:600;color:var(--ink);font-family:var(--font-display)}
.spectable td b{color:var(--copper)}

/* ---------- Process ---------- */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{position:relative;padding-top:20px}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-family:var(--font-display);font-weight:700;font-size:2.4rem;color:var(--copper);opacity:.35;line-height:1}
.step h3{font-size:1.08rem;margin:.5em 0 .3em}
.step p{color:var(--ink-2);font-size:.92rem;margin:0}
.step__line{position:absolute;top:34px;left:52px;right:-10px;height:2px;background:repeating-linear-gradient(90deg,var(--line-2) 0 6px,transparent 6px 12px)}

/* ---------- Applications ---------- */
.appcard{position:relative;border-radius:var(--r-lg);overflow:hidden;color:#fff;min-height:230px;display:flex;flex-direction:column;justify-content:flex-end;padding:24px;border:1px solid var(--line)}
.appcard__bg{position:absolute;inset:0;z-index:0}
.appcard__bg svg{width:100%;height:100%}
.appcard::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,27,36,.05),rgba(13,27,36,.82));z-index:1}
.appcard>*{position:relative;z-index:2}
.appcard h3{color:#fff;margin-bottom:.2em}
.appcard p{color:#cbd8de;font-size:.9rem;margin:0}

/* ---------- Products ---------- */
.prodcard{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:.2s}
.prodcard:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.prodcard__img{aspect-ratio:4/3;background:var(--paper-2);position:relative;overflow:hidden}
.prodcard__img svg{width:100%;height:100%}
.prodcard__body{padding:18px 20px}
.prodcard__body h3{font-size:1.05rem;margin-bottom:.25em}
.prodcard__body p{font-size:.88rem;color:var(--ink-3);margin:0}
.prodcard__meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.pill{font-size:.74rem;font-weight:600;font-family:var(--font-display);padding:4px 9px;border-radius:99px;background:var(--brand-ghost);color:var(--brand)}
.pill--c{background:var(--copper-ghost);color:var(--copper)}

/* ---------- CTA band ---------- */
.ctaband{background:
  radial-gradient(700px 300px at 12% 0%, rgba(181,98,44,.22), transparent 60%),
  var(--ink);color:#cddae1;border-radius:24px;padding:56px;position:relative;overflow:hidden}
.ctaband h2{color:#fff;max-width:18ch}
.ctaband p{max-width:52ch}
.ctaband__actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}

/* ---------- Inquiry form ---------- */
.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:2px}
.field--full{grid-column:1/-1}
.field label{font-size:.85rem;font-weight:600;color:var(--ink-2);font-family:var(--font-display)}
.field input,.field select,.field textarea{
  font-family:var(--font-body);font-size:.98rem;padding:12px 14px;border:1.5px solid var(--line-2);
  border-radius:var(--r);background:#fff;color:var(--ink);transition:border-color .15s, box-shadow .15s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-ghost)}
.field textarea{resize:vertical;min-height:110px}
.field .req{color:var(--copper)}
.form-note{font-size:.82rem;color:var(--ink-3);margin-top:4px}
.form-ok{background:var(--copper-ghost);border:1px solid var(--copper);color:#7a3f18;padding:14px 16px;border-radius:var(--r);font-size:.95rem;display:none}
.form-ok.show{display:block}

/* ---------- Floating contact ---------- */
.floaters{position:fixed;right:20px;bottom:22px;z-index:70;display:flex;flex-direction:column;gap:12px}
.floater{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;box-shadow:var(--shadow);color:#fff;transition:transform .15s}
.floater:hover{transform:scale(1.08)}
.floater svg{width:28px;height:28px}
.floater--wa{background:#25d366}
.floater--mail{background:var(--brand)}
.floater--top{background:#fff;color:var(--ink);border:1px solid var(--line);width:48px;height:48px}
.floater--top svg{width:22px;height:22px}

/* ---------- Modal ---------- */
.modal{position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;padding:20px}
.modal.open{display:flex}
.modal__scrim{position:absolute;inset:0;background:rgba(13,27,36,.55);backdrop-filter:blur(3px)}
.modal__box{position:relative;background:var(--white);border-radius:20px;max-width:640px;width:100%;padding:34px;box-shadow:var(--shadow-lg);max-height:92vh;overflow:auto}
.modal__close{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:1.2rem;color:var(--ink-2)}
.modal__close:hover{background:var(--paper)}
.modal h3{margin-bottom:.2em}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#93a8b3;padding:64px 0 28px}
.footcols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:16px;font-family:var(--font-display)}
.site-footer a{color:#93a8b3;display:block;padding:5px 0;font-size:.92rem}
.site-footer a:hover{color:var(--copper-2)}
.footbrand p{font-size:.92rem;max-width:34ch;color:#93a8b3}
.footcontact{margin-top:14px;font-size:.92rem}
.footcontact a{color:#cddae1;font-weight:600}
.footbottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:.84rem;color:#6d838f}

/* ---------- Page hero (interior) ---------- */
.pagehero{background:
  radial-gradient(900px 380px at 85% -20%, rgba(10,109,127,.14), transparent 60%),
  var(--ink);color:#cddae1;padding:64px 0 68px}
.pagehero h1{color:#fff}
.pagehero .lede{color:#aabecb}
.crumbs{font-size:.86rem;color:#7f95a1;margin-bottom:16px;font-family:var(--font-display)}
.crumbs a{color:#aabecb}

/* ---------- Reveal anim ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .tcbar__fill{transition:none}
  html{scroll-behavior:auto}
}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .hero__grid{grid-template-columns:1fr;gap:32px;padding:52px 0 60px}
  .hero__panel{order:-1;max-width:420px}
  .matcompare{grid-template-columns:1fr;gap:30px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step__line{display:none}
  .footcols{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .section{padding:60px 0}
  .nav__links{
    display:none;position:absolute;top:72px;left:0;right:0;background:var(--white);
    flex-direction:column;padding:14px;gap:2px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)
  }
  .nav__links.open{display:flex}
  .nav__links a{padding:12px 14px}
  .nav__cta{width:100%;margin:6px 0 0}
  .nav__toggle{display:block}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .formgrid{grid-template-columns:1fr}
  .ctaband{padding:34px}
  .footcols{grid-template-columns:1fr}
  .trust__row{justify-content:flex-start}
}