/* ==========================================================================
   Hanchuan Clean Technology — Hoja de estilos principal
   Sitio: cleanroom.wa-ya.cn
   ========================================================================== */

:root{
  --navy-900:#06121f;
  --navy-800:#0a1e33;
  --navy-700:#0f2c48;
  --navy-600:#154066;
  --blue-500:#1a6fd4;
  --blue-400:#3a8fe8;
  --cyan-400:#25c6d8;
  --cyan-300:#6fe3ee;
  --slate-600:#4a5b6e;
  --slate-500:#66788c;
  --slate-300:#b9c5d2;
  --slate-100:#eef2f6;
  --white:#ffffff;
  --ink:#0d1b2a;
  --radius-s:8px;
  --radius-m:14px;
  --radius-l:22px;
  --shadow-s:0 2px 10px rgba(6,18,31,.06);
  --shadow-m:0 12px 32px rgba(6,18,31,.10);
  --shadow-l:0 26px 60px rgba(6,18,31,.16);
  --wrap:1240px;
  --font:"Inter","Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.72,.24,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);
  background:var(--white);line-height:1.75;font-size:16.5px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--blue-500);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--blue-400)}
h1,h2,h3,h4,h5{margin:0 0 .6em;line-height:1.22;letter-spacing:-.015em;font-weight:700;color:var(--navy-900)}
h1{font-size:clamp(2rem,4.4vw,3.5rem);font-weight:800}
h2{font-size:clamp(1.65rem,3vw,2.5rem)}
h3{font-size:clamp(1.15rem,1.7vw,1.45rem)}
h4{font-size:1.05rem}
p{margin:0 0 1.1em;color:var(--slate-600)}
ul,ol{margin:0 0 1.2em;padding-left:1.25em}
li{color:var(--slate-600);margin-bottom:.45em}
strong{color:var(--navy-800);font-weight:700}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- Botones / CTA ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:15px 30px;border-radius:999px;font-weight:600;font-size:.98rem;
  letter-spacing:.01em;border:1.5px solid transparent;cursor:pointer;
  transition:all .3s var(--ease);text-align:center;line-height:1.2;
}
.btn svg{width:17px;height:17px;flex:0 0 auto;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{
  background:linear-gradient(120deg,var(--blue-500) 0%,var(--cyan-400) 100%);
  color:#fff;box-shadow:0 10px 26px rgba(26,111,212,.30);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(26,111,212,.40)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.8)}
.btn-outline{background:transparent;color:var(--navy-800);border-color:var(--slate-300)}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-500);background:#f4f9ff}
.btn-sm{padding:11px 22px;font-size:.9rem}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.88);backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(13,27,42,.07);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(6,18,31,.09);background:rgba(255,255,255,.96)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:82px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand img{height:44px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text span:first-child{font-weight:800;font-size:1.02rem;color:var(--navy-900);letter-spacing:-.01em}
.brand-text span:last-child{font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--slate-500);font-weight:600}

.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{
  position:relative;padding:10px 15px;border-radius:8px;font-size:.94rem;font-weight:600;
  color:var(--navy-800);
}
.nav a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--blue-500),var(--cyan-400));
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);border-radius:2px;
}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.nav a[aria-current="page"]{color:var(--blue-500)}
.header-cta{flex:0 0 auto;margin-left:10px}

.burger{
  display:none;width:44px;height:44px;border:1px solid var(--slate-300);background:#fff;
  border-radius:10px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{display:block;width:20px;height:2px;background:var(--navy-900);border-radius:2px;transition:.3s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--navy-900);
}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center;opacity:.62}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(6,18,31,.94) 0%,rgba(6,18,31,.78) 42%,rgba(10,30,51,.35) 100%);
}
.hero-inner{position:relative;z-index:1;padding:clamp(72px,11vw,132px) 0 clamp(64px,9vw,110px)}
.hero-copy{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;padding:7px 16px;border-radius:999px;
  background:rgba(37,198,216,.14);border:1px solid rgba(111,227,238,.42);
  color:var(--cyan-300);font-size:.78rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  margin-bottom:22px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan-400);box-shadow:0 0 0 4px rgba(37,198,216,.22)}
.hero h1{color:#fff;margin-bottom:.42em;font-weight:800;letter-spacing:-.025em}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--cyan-300),#ffffff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-lead{font-size:clamp(1rem,1.5vw,1.2rem);color:rgba(255,255,255,.84);max-width:640px;margin-bottom:32px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  padding-top:30px;border-top:1px solid rgba(255,255,255,.16);max-width:820px;
}
.hero-stats div{min-width:0}
.hero-stats b{display:block;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;color:#fff;line-height:1.1;letter-spacing:-.02em}
.hero-stats span{display:block;font-size:.8rem;color:rgba(255,255,255,.66);margin-top:6px;letter-spacing:.04em}

/* ---------- Secciones ---------- */
.section{padding:clamp(60px,8vw,104px) 0}
.section--tight{padding:clamp(44px,6vw,72px) 0}
.section--alt{background:var(--slate-100)}
.section--dark{background:var(--navy-900);color:#fff}
.section--dark p,.section--dark li{color:rgba(255,255,255,.76)}
.section--dark h2,.section--dark h3{color:#fff}
.section-head{max-width:760px;margin-bottom:clamp(34px,5vw,52px)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head .kicker{
  display:block;font-size:.78rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase;
  color:var(--blue-500);margin-bottom:14px;
}
.section--dark .kicker{color:var(--cyan-300)}
.section-head p{font-size:1.03rem;margin-bottom:0}

/* ---------- Grids ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- Cards ---------- */
.card{
  background:#fff;border:1px solid rgba(13,27,42,.08);border-radius:var(--radius-m);
  padding:30px;box-shadow:var(--shadow-s);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
  height:100%;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:rgba(26,111,212,.28)}
.card h3{margin-bottom:.5em;font-size:1.12rem}
.card p:last-child{margin-bottom:0}
.card-num{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,rgba(26,111,212,.10),rgba(37,198,216,.16));
  color:var(--blue-500);font-weight:800;font-size:.95rem;margin-bottom:16px;letter-spacing:.02em;
}
.section--dark .card{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.10);box-shadow:none}
.section--dark .card:hover{background:rgba(255,255,255,.075);border-color:rgba(111,227,238,.32);box-shadow:0 18px 44px rgba(0,0,0,.28)}
.section--dark .card-num{background:rgba(37,198,216,.14);color:var(--cyan-300)}

/* Feature list */
.checks{list-style:none;padding:0;margin:0}
.checks li{position:relative;padding-left:30px;margin-bottom:12px}
.checks li::before{
  content:"";position:absolute;left:0;top:.55em;width:16px;height:16px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue-500),var(--cyan-400));
}
.checks li::after{
  content:"";position:absolute;left:5px;top:.85em;width:6px;height:3px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg);
}
.section--dark .checks li::before{background:linear-gradient(135deg,var(--cyan-400),var(--cyan-300))}

/* ---------- Intro split ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:center}
.split.reverse{grid-template-columns:.95fr 1.05fr}
.split-media{position:relative;border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-l)}
.split-media img{width:100%;aspect-ratio:538/328;object-fit:cover}
.split-media .badge{
  position:absolute;left:0;bottom:0;background:rgba(6,18,31,.86);backdrop-filter:blur(8px);
  color:#fff;padding:16px 22px;border-radius:0 var(--radius-m) 0 0;font-size:.86rem;line-height:1.45;
}
.split-media .badge b{display:block;font-size:1.5rem;color:var(--cyan-300);line-height:1.1;margin-bottom:3px}

/* ---------- Stats band ---------- */
.stats-band{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:rgba(13,27,42,.09);border-radius:var(--radius-m);overflow:hidden}
.stats-band div{background:#fff;padding:28px 22px;text-align:center}
.stats-band b{display:block;font-size:clamp(1.6rem,3vw,2.35rem);font-weight:800;color:var(--blue-500);line-height:1.1;letter-spacing:-.02em}
.stats-band span{display:block;font-size:.86rem;color:var(--slate-500);margin-top:8px}

/* ---------- Timeline ---------- */
.timeline{position:relative;padding-left:34px;max-width:820px}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--blue-500),var(--cyan-400),rgba(37,198,216,0))}
.timeline-item{position:relative;padding-bottom:34px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-33px;top:6px;width:18px;height:18px;border-radius:50%;
  background:#fff;border:3px solid var(--blue-500);box-shadow:0 0 0 4px rgba(26,111,212,.13);
}
.timeline-item .year{font-size:.82rem;font-weight:800;letter-spacing:.14em;color:var(--blue-500);text-transform:uppercase}
.timeline-item h3{margin:6px 0 .4em;font-size:1.15rem}
.timeline-item p{margin:0}

/* ---------- Product cards ---------- */
.product-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid rgba(13,27,42,.08);
  border-radius:var(--radius-m);overflow:hidden;box-shadow:var(--shadow-s);
  transition:transform .38s var(--ease),box-shadow .38s var(--ease),border-color .38s var(--ease);
  height:100%;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:rgba(26,111,212,.3)}
.product-card__img{position:relative;overflow:hidden;background:var(--slate-100);aspect-ratio:4/3}
.product-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.product-card:hover .product-card__img img{transform:scale(1.05)}
.product-card__tag{
  position:absolute;left:14px;top:14px;background:rgba(6,18,31,.82);backdrop-filter:blur(6px);
  color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:5px 12px;border-radius:999px;
}
.product-card__body{padding:24px;display:flex;flex-direction:column;flex:1}
.product-card__body h3{font-size:1.1rem;margin-bottom:.45em}
.product-card__body p{font-size:.94rem;margin-bottom:18px;flex:1}
.product-card__link{
  display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:.9rem;color:var(--blue-500);
  margin-top:auto;
}
.product-card__link svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.product-card:hover .product-card__link svg{transform:translateX(4px)}

/* ---------- Feature (advantage) grid ---------- */
.adv-item{display:flex;gap:20px;align-items:flex-start}
.adv-item img{
  width:130px;flex:0 0 130px;border-radius:var(--radius-s);aspect-ratio:4/3;object-fit:cover;
  box-shadow:var(--shadow-s);
}
.adv-item h4{margin:0 0 .35em;font-size:1rem}
.adv-item p{margin:0;font-size:.92rem}

/* ---------- Industry cards ---------- */
.industry{
  position:relative;border-radius:var(--radius-m);overflow:hidden;min-height:320px;display:flex;
  align-items:flex-end;color:#fff;box-shadow:var(--shadow-m);isolation:isolate;
}
.industry img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform .7s var(--ease)}
.industry::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(6,18,31,.05) 25%,rgba(6,18,31,.88) 100%)}
.industry:hover img{transform:scale(1.06)}
.industry div{padding:26px}
.industry h3{color:#fff;font-size:1.1rem;margin-bottom:.35em}
.industry p{color:rgba(255,255,255,.82);margin:0;font-size:.9rem}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-l);color:#fff;
  background:linear-gradient(115deg,var(--navy-800) 0%,var(--navy-600) 52%,#0d6a86 100%);
  padding:clamp(38px,6vw,64px);text-align:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 12% 18%,rgba(37,198,216,.30),transparent 46%),
             radial-gradient(circle at 88% 82%,rgba(58,143,232,.28),transparent 48%);
}
.cta-band > *{position:relative}
.cta-band h2{color:#fff;margin-bottom:.4em;font-size:clamp(1.5rem,3vw,2.2rem)}
.cta-band p{color:rgba(255,255,255,.82);max-width:660px;margin:0 auto 28px}
.cta-band .hero-actions{justify-content:center;margin-bottom:0}

/* ---------- FAQ ---------- */
.faq{max-width:920px;margin:0 auto}
.faq details{
  background:#fff;border:1px solid rgba(13,27,42,.09);border-radius:var(--radius-m);
  margin-bottom:14px;overflow:hidden;transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq details[open]{border-color:rgba(26,111,212,.35);box-shadow:var(--shadow-s)}
.faq summary{
  cursor:pointer;padding:22px 56px 22px 24px;font-weight:700;font-size:1rem;color:var(--navy-900);
  position:relative;list-style:none;line-height:1.5;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:24px;top:50%;width:10px;height:10px;
  border-right:2px solid var(--blue-500);border-bottom:2px solid var(--blue-500);
  transform:translateY(-70%) rotate(45deg);transition:transform .3s var(--ease);
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq .faq-body{padding:0 24px 24px;color:var(--slate-600)}
.faq .faq-body p:last-child{margin-bottom:0}

/* ---------- Forms ---------- */
.form-card{
  background:#fff;border:1px solid rgba(13,27,42,.08);border-radius:var(--radius-l);
  padding:clamp(26px,4vw,44px);box-shadow:var(--shadow-m);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:.86rem;font-weight:700;color:var(--navy-800);letter-spacing:.01em}
.field label .req{color:#d93a4a}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:.95rem;color:var(--ink);background:#fbfcfd;
  border:1px solid #d5dde6;border-radius:10px;padding:13px 15px;width:100%;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue-400);background:#fff;box-shadow:0 0 0 4px rgba(58,143,232,.13);
}
.field .hint{font-size:.78rem;color:var(--slate-500)}
.checkline{display:flex;gap:10px;align-items:flex-start;font-size:.84rem;color:var(--slate-500)}
.checkline input{margin-top:4px;accent-color:var(--blue-500);width:16px;height:16px}
.form-note{font-size:.8rem;color:var(--slate-500);margin-top:14px;margin-bottom:0}

.alert{
  display:none;padding:16px 18px;border-radius:12px;font-size:.92rem;margin-bottom:22px;
  border:1px solid transparent;line-height:1.6;
}
.alert.is-visible{display:block}
.alert-success{background:#e8f8f2;border-color:#9fe0c9;color:#0a6449}
.alert-error{background:#fdecee;border-color:#f3b6be;color:#8f1f2c}
.alert strong{display:block;margin-bottom:4px;color:inherit}

.form-success-box{
  display:none;text-align:center;padding:34px 20px;
}
.form-success-box.is-visible{display:block}
.form-success-box .tick{
  width:74px;height:74px;margin:0 auto 22px;border-radius:50%;
  background:linear-gradient(135deg,#12b981,#25c6d8);display:flex;align-items:center;justify-content:center;
  box-shadow:0 14px 34px rgba(18,185,129,.34);
}
.form-success-box .tick svg{width:34px;height:34px;stroke:#fff;stroke-width:3;fill:none}
.form-success-box h3{margin-bottom:.5em}
.form-success-box p{max-width:440px;margin-left:auto;margin-right:auto}

/* ---------- Contact info items ---------- */
.info-list{display:grid;gap:16px}
.info-item{display:flex;gap:16px;align-items:flex-start}
.info-item .ico{
  width:46px;height:46px;flex:0 0 46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(26,111,212,.10),rgba(37,198,216,.16));color:var(--blue-500);
}
.info-item .ico svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.9}
.info-item h4{margin:0 0 .2em;font-size:.95rem}
.info-item p{margin:0;font-size:.92rem;word-break:break-word}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.gallery figure{margin:0;border-radius:var(--radius-m);overflow:hidden;box-shadow:var(--shadow-s);background:#fff}
.gallery img{width:100%;aspect-ratio:396/182;object-fit:cover;transition:transform .6s var(--ease)}
.gallery figure:hover img{transform:scale(1.06)}
.gallery figcaption{font-size:.84rem;padding:12px 16px;color:var(--slate-500);font-weight:600}

/* ---------- Breadcrumb ---------- */
.crumb{font-size:.83rem;color:var(--slate-500);padding:18px 0 0}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0}
.crumb li{margin:0;display:flex;align-items:center;gap:8px;color:var(--slate-500)}
.crumb li:not(:last-child)::after{content:"/";color:var(--slate-300)}
.crumb a{color:var(--slate-500);font-weight:600}
.crumb a:hover{color:var(--blue-500)}
.crumb [aria-current]{color:var(--navy-800);font-weight:700}

/* ---------- Page hero (interior) ---------- */
.page-hero{
  position:relative;background:var(--navy-900);color:#fff;overflow:hidden;
  padding:clamp(52px,7vw,86px) 0 clamp(46px,6vw,72px);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 82% 12%,rgba(37,198,216,.24),transparent 52%),
             radial-gradient(circle at 8% 88%,rgba(26,111,212,.26),transparent 50%);
}
.page-hero .wrap{position:relative}
.page-hero h1{color:#fff;font-size:clamp(1.85rem,3.6vw,2.9rem);margin-bottom:.35em}
.page-hero p{color:rgba(255,255,255,.78);max-width:660px;margin-bottom:0}
.page-hero .eyebrow{margin-bottom:18px}

/* ---------- Spec table ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius-m);border:1px solid rgba(13,27,42,.09);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:.93rem;min-width:520px}
table.spec th,table.spec td{padding:15px 20px;text-align:left;border-bottom:1px solid rgba(13,27,42,.07);vertical-align:top}
table.spec th{background:#f6f9fc;font-weight:700;color:var(--navy-800);white-space:nowrap;width:32%}
table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:none}
table.spec td{color:var(--slate-600)}

/* ---------- Product detail layout ---------- */
.pd-hero{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(30px,4vw,54px);align-items:start}
.pd-gallery{border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-m);background:var(--slate-100)}
.pd-gallery img{width:100%;aspect-ratio:4/3;object-fit:cover}
.pd-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.chip{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;font-size:.79rem;font-weight:700;
  background:rgba(26,111,212,.09);color:var(--blue-500);letter-spacing:.02em;
}
.chip--cyan{background:rgba(37,198,216,.13);color:#0d7d8c}
.pd-quickfacts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:26px 0 30px}
.pd-quickfacts div{background:#f6f9fc;border-radius:12px;padding:14px 16px}
.pd-quickfacts b{display:block;font-size:1.05rem;color:var(--navy-900);line-height:1.3}
.pd-quickfacts span{font-size:.79rem;color:var(--slate-500)}

.pd-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:clamp(30px,4vw,52px);align-items:start}
.pd-body h2{font-size:clamp(1.35rem,2.2vw,1.7rem);margin-top:0}
.pd-body h3{font-size:1.12rem;margin-top:2em}
.pd-body > ul,.pd-body > ol{margin-bottom:1.5em}
.pd-body li{margin-bottom:.55em}
.pd-aside{position:sticky;top:104px;display:grid;gap:18px}
.aside-card{background:#fff;border:1px solid rgba(13,27,42,.09);border-radius:var(--radius-m);padding:26px;box-shadow:var(--shadow-s)}
.aside-card h4{font-size:1rem;margin-bottom:.6em}
.aside-card p{font-size:.9rem;margin-bottom:18px}
.aside-card--dark{background:linear-gradient(150deg,var(--navy-800),var(--navy-600));border:none;color:#fff}
.aside-card--dark h4,.aside-card--dark p{color:#fff}
.aside-card--dark p{color:rgba(255,255,255,.78)}

/* numbered steps */
.steps{counter-reset:st;list-style:none;padding:0}
.steps li{position:relative;padding-left:46px;margin-bottom:20px;counter-increment:st}
.steps li::before{
  content:counter(st,decimal-leading-zero);position:absolute;left:0;top:0;
  width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--blue-500),var(--cyan-400));color:#fff;font-size:.8rem;font-weight:800;
}
.steps li b{display:block;color:var(--navy-900);margin-bottom:.15em}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.72);padding:clamp(50px,6vw,76px) 0 0;font-size:.92rem}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:clamp(28px,4vw,48px)}
.site-footer h4{color:#fff;font-size:.86rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:20px}
.site-footer a{color:rgba(255,255,255,.72)}
.site-footer a:hover{color:var(--cyan-300)}
.footer-brand img{height:42px;margin-bottom:18px;filter:brightness(0) invert(1);opacity:.95}
.footer-brand p{color:rgba(255,255,255,.66);font-size:.9rem;line-height:1.8;margin-bottom:0}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:.9rem}
.footer-bottom{
  margin-top:clamp(36px,5vw,54px);padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:.82rem;color:rgba(255,255,255,.5);
}
.footer-bottom p{margin:0;color:inherit}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--blue-500),var(--cyan-400));color:#fff;display:flex;
  align-items:center;justify-content:center;box-shadow:0 12px 28px rgba(26,111,212,.36);
  opacity:0;pointer-events:none;transform:translateY(12px);transition:.35s var(--ease);z-index:80;
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:none}
.to-top svg{width:20px;height:20px;stroke:#fff;stroke-width:2.4;fill:none}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:1080px){
  .footer-top{grid-template-columns:1fr 1fr}
  .pd-layout{grid-template-columns:1fr}
  .pd-aside{position:static;grid-template-columns:1fr 1fr;display:grid}
}
@media (max-width:960px){
  .nav{
    position:fixed;inset:82px 0 auto;background:#fff;flex-direction:column;align-items:stretch;
    padding:14px 20px 26px;gap:2px;box-shadow:0 18px 40px rgba(6,18,31,.16);
    transform:translateY(-8px);opacity:0;visibility:hidden;transition:.3s var(--ease);
    border-bottom:1px solid rgba(13,27,42,.08);max-height:calc(100vh - 82px);overflow-y:auto;
  }
  .nav.is-open{transform:none;opacity:1;visibility:visible}
  .nav a{padding:14px 8px;font-size:1rem;border-bottom:1px solid rgba(13,27,42,.06)}
  .nav a::after{display:none}
  .burger{display:flex}
  .header-cta{display:none}
  .split,.split.reverse{grid-template-columns:1fr}
  .split.reverse .split-media{order:-1}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pd-hero{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 14px}
  .gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-band{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:680px){
  body{font-size:16px}
  .header-inner{height:70px}
  .nav{inset:70px 0 auto;max-height:calc(100vh - 70px)}
  .brand img{height:36px}
  .brand-text span:last-child{display:none}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .pd-quickfacts{grid-template-columns:1fr}
  .pd-aside{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .adv-item{flex-direction:column;gap:14px}
  .adv-item img{width:100%;flex:none;aspect-ratio:4/3}
  .footer-top{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .cta-band{padding:32px 22px}
  .card{padding:24px}
  .wrap{padding:0 18px}
  .industry{min-height:260px}
  .to-top{right:14px;bottom:14px;width:44px;height:44px}
}