/* ===== Hantech Filter — premium industrial design system ===== */
:root{
  --brand-bg:#03193b;--navy-900:#03193b;--navy-850:#04204d;--navy-800:#06275b;--navy-750:#0a336f;--navy-700:#0d407f;
  --ink:#10233d;--muted:#647589;--muted-2:#8493a5;
  --paper:#f7f9fc;--mist:#edf3f8;--mist-2:#e2ebf3;--line:#d3dee8;
  --cyan:#19b7d8;--cyan-1:#60d8ef;--green:#79c843;--green-1:#9be66a;--amber:#f1b44c;
  --text-d:#f4f8fb;--muted-d:#c0cfdb;--line-d:rgba(255,255,255,.13);--line-d2:rgba(255,255,255,.22);
  --grad:linear-gradient(100deg,#19b7d8 0%,#2dbfb2 48%,#79c843 100%);
  --grad-soft:linear-gradient(100deg,rgba(25,183,216,.18),rgba(121,200,67,.18));
  --max:1200px;--r:14px;--r-lg:22px;
  --sh:0 24px 60px -30px rgba(6,20,33,.55);--sh-card:0 16px 44px -24px rgba(9,26,40,.4);
  --font-d:'Archivo',system-ui,'Segoe UI',Arial,sans-serif;
  --font-b:'Inter',system-ui,'Segoe UI',Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--brand-bg);color:var(--ink);font-family:var(--font-b);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--font-d);font-weight:800;line-height:1.08;letter-spacing:-.022em;margin:0;color:var(--ink);overflow-wrap:break-word}
main{overflow-x:clip}
.split>*,.layout-2>*,.grid>*{min-width:0}
p{margin:0}
::selection{background:rgba(10,159,206,.22)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.ic{width:20px;height:20px;flex:none}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;border-radius:12px;font-family:var(--font-d);font-weight:700;font-size:15px;letter-spacing:.01em;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .22s ease,background .2s,border-color .2s,color .2s;white-space:nowrap}
.btn .ic,.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--grad);color:#04141c;box-shadow:0 12px 28px -14px rgba(10,159,206,.75)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px -14px rgba(10,159,206,.85)}
.btn-wa{background:#25d366;color:#fff}
.btn-wa:hover{transform:translateY(-2px);box-shadow:0 16px 32px -14px rgba(37,211,102,.7)}
.btn-ghost{background:rgba(255,255,255,.05);border-color:var(--line-d2);color:var(--text-d)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.34);transform:translateY(-2px)}
.btn-line{border-color:var(--line);color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn-lg{padding:16px 28px;font-size:16px;border-radius:14px}
.btn-block{display:flex;width:100%}

/* ---- topbar ---- */
.topbar{background:var(--navy-900);color:#d8e7ee;font-size:15px;border-bottom:1px solid var(--line-d)}
.topbar .wrap{display:flex;align-items:center;justify-content:flex-end;gap:16px;min-height:52px;padding-left:24px;padding-right:24px;max-width:none;width:100%}
.topbar a{color:#d8e7ee;transition:color .2s,background .2s;border-radius:10px;padding:6px 8px}
.topbar a:hover{color:#fff;background:rgba(255,255,255,.06)}
.tb-left{display:flex;gap:18px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.tb-item{display:inline-flex;align-items:center;gap:12px;font-family:var(--font-d);font-weight:700;letter-spacing:.01em}
.tb-item .ic{width:30px;height:30px;color:var(--cyan-1)}
.tb-right{display:none}
.tb-right .ic{width:15px;height:15px}

/* ---- nav ---- */
.nav{position:sticky;top:0;z-index:60;background:rgba(3,25,59,.94);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border-bottom:1px solid var(--line-d);color:var(--text-d);box-shadow:0 18px 44px -34px rgba(0,0,0,.75)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:22px;min-height:224px}
.brand{display:inline-flex;align-items:center;flex:0 0 auto}
.brand img{height:202px;width:auto;max-width:535px;object-fit:contain;filter:drop-shadow(0 16px 36px rgba(0,0,0,.60))}
.menu{display:flex;align-items:center;gap:4px}
.menu a{font-family:var(--font-d);font-weight:700;font-size:13.5px;letter-spacing:.045em;color:#d5e6ee;padding:11px 14px;border-radius:10px;position:relative;transition:color .2s,background .2s}
.menu a:hover{color:#fff;background:rgba(255,255,255,.06)}
.menu a.active{color:#fff}
.menu a.active::after{content:"";position:absolute;left:15px;right:15px;bottom:5px;height:2px;background:var(--grad);border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:12px}
.lang-switch{display:inline-flex;align-items:center;gap:2px;padding:4px;border:1px solid var(--line-d2);border-radius:999px;background:rgba(255,255,255,.06);box-shadow:inset 0 1px 0 rgba(255,255,255,.06)}
.lang-switch button{appearance:none;border:0;background:transparent;color:#d5e6ee;font-family:var(--font-d);font-weight:800;font-size:12px;letter-spacing:.06em;line-height:1;padding:10px 11px;border-radius:999px;cursor:pointer;transition:background .18s,color .18s,transform .18s}
.lang-switch button:hover{background:rgba(255,255,255,.10);color:#fff;transform:translateY(-1px)}
.lang-switch button.is-active{background:var(--grad);color:#04141c;box-shadow:0 8px 18px -12px rgba(25,183,216,.9)}
.gt-hidden{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;overflow:hidden}
body>.skiptranslate,body>iframe.skiptranslate{display:none!important}body{top:0!important}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:46px;height:46px;border:1px solid var(--line-d2);border-radius:12px;background:rgba(255,255,255,.05);cursor:pointer;padding:0}
.nav-toggle span{display:block;width:20px;height:2px;background:#dbe8ee;margin:0 auto;border-radius:2px;transition:.25s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobed{display:none;border-top:1px solid var(--line-d);background:rgba(6,18,30,.98);backdrop-filter:blur(14px)}
.mobed.open{display:block}
.mobed .wrap{padding:14px 24px 26px;display:grid;gap:2px}
.mobed a.ml{font-family:var(--font-d);font-weight:600;font-size:15px;color:#d3e2e9;padding:15px 6px;border-bottom:1px solid var(--line-d);letter-spacing:.04em}
.mob-contact{display:flex;gap:20px;flex-wrap:wrap;margin-top:16px;color:#9fb4c0;font-size:14px}
.mob-contact a{display:inline-flex;align-items:center;gap:8px}
.mob-contact .ic{width:15px;height:15px;color:var(--cyan-1)}

/* ---- generic section ---- */
.section{padding:96px 0;position:relative}
.section-sm{padding:66px 0;position:relative}
.bg-mist{background:linear-gradient(180deg,#03193b 0%,#052151 100%);color:var(--text-d)}
.bg-paper{background:linear-gradient(180deg,#f7f9fc 0%,#edf3f8 100%)}
.dark{background:var(--brand-bg);color:var(--text-d)}
.dark h1,.dark h2,.dark h3,.dark h4{color:#fff}
.darker{background:var(--navy-900);color:var(--text-d)}
.darker h2,.darker h3{color:#fff}
.bp{position:relative;overflow:hidden}
.bp::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:46px 46px;-webkit-mask-image:radial-gradient(120% 100% at 80% 0%,#000,transparent 72%);mask-image:radial-gradient(120% 100% at 80% 0%,#000,transparent 72%);pointer-events:none}
.sec-head{max-width:780px;margin:0 0 48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:11px;font-family:var(--font-d);font-weight:700;text-transform:uppercase;letter-spacing:.16em;font-size:12.5px;color:var(--cyan);margin-bottom:16px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--grad);border-radius:2px}
.dark .eyebrow,.darker .eyebrow{color:var(--cyan-1)}
h2.big{font-size:clamp(26px,4vw,46px)}
.lead{font-size:19px;color:var(--muted);line-height:1.62}
.dark .lead,.darker .lead{color:var(--muted-d)}

/* ---- hero ---- */
.hero{position:relative;color:var(--text-d);overflow:hidden;background:radial-gradient(1100px 520px at 80% -12%,rgba(25,183,216,.20),transparent 58%),radial-gradient(760px 480px at 2% 118%,rgba(121,200,67,.12),transparent 55%),linear-gradient(180deg,#03193b 0%,#04204d 58%,#03193b 100%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;-webkit-mask-image:radial-gradient(120% 90% at 75% 5%,#000,transparent 70%);mask-image:radial-gradient(120% 90% at 75% 5%,#000,transparent 70%);pointer-events:none}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:.86fr 1.14fr;gap:54px;align-items:center;padding:86px 24px 96px}
.hero .wrap>*{min-width:0}
.hero h1{font-size:clamp(36px,6vw,76px);line-height:1.01;letter-spacing:-.034em;color:#fff;margin:22px 0 0;overflow-wrap:break-word;text-wrap:balance}
.hero h1 .grad{color:var(--green-1)}
.hero .sub{font-size:20px;color:#c7d8e4;max-width:620px;margin:22px 0 0;text-wrap:pretty}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px 24px;margin-top:46px;max-width:640px}
.hstat b{font-family:var(--font-d);font-weight:800;font-size:clamp(17px,1.55vw,22px);color:#fff;display:block;letter-spacing:-.015em;line-height:1.12;text-wrap:balance}
.hstat b .u{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hstat span{font-size:13px;color:#a9bfcc;letter-spacing:.01em;display:block;margin-top:8px;line-height:1.35}
.hero-visual{position:relative;min-height:540px}
.hero-frame{position:relative;border-radius:18px;overflow:hidden;border:1px solid rgba(96,216,239,.28);box-shadow:0 28px 58px -30px rgba(0,0,0,.86);background:#03193b;min-height:580px}
.hero-frame::after{content:"";position:absolute;inset:0;z-index:3;pointer-events:none;background:linear-gradient(180deg,rgba(6,18,30,0) 52%,rgba(5,14,24,.28))}
.hero-frame>img{width:100%;height:580px;object-fit:cover;object-position:center;background:#03193b;filter:saturate(1.12) contrast(1.06)}
.hero-badge{display:none}
.hero-badge .ic-wrap{width:40px;height:40px;border-radius:11px;background:var(--grad-soft);color:var(--cyan-1);display:grid;place-items:center}
.hero-badge b{font-family:var(--font-d);color:#fff;font-size:14px;display:block}
.hero-badge span{display:block;color:#9fb4c0;font-size:12px;margin-top:2px}
.hero-tag{position:absolute;right:18px;top:18px;z-index:3;background:rgba(3,25,59,.84);backdrop-filter:blur(10px);border:1px solid rgba(96,216,239,.34);border-radius:10px;padding:10px 14px;font-family:var(--font-d);font-weight:800;font-size:12.5px;color:#e9fbff;letter-spacing:.04em;box-shadow:0 10px 22px -18px #000;display:flex;align-items:center;gap:8px}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--green-1);box-shadow:0 0 10px var(--green-1)}
.hero-slider{position:absolute;inset:0;z-index:1;background:#03193b}
.hero-slider img,.hero-slide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:0;transform:scale(1.02);animation:heroSlide 18s infinite;will-change:opacity,transform}
.hero-slider img:first-child{opacity:1}
.hero-slide:nth-child(2){animation-delay:6s}.hero-slide:nth-child(3){animation-delay:12s}
@keyframes heroSlide{0%{opacity:0;transform:scale(1.035)}4%{opacity:1}30%{opacity:1;transform:scale(1)}36%{opacity:0;transform:scale(1.01)}100%{opacity:0}}
.trust{position:relative;z-index:2;border-top:1px solid var(--line-d);background:rgba(4,14,24,.4)}
.trust .wrap{display:flex;align-items:center;gap:12px 24px;flex-wrap:wrap;justify-content:center;padding-top:22px;padding-bottom:22px}
.trust .tl{font-family:var(--font-d);font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:11.5px;color:#7d94a1}
.trust .ti{font-family:var(--font-d);font-weight:600;color:#c1d3dd;letter-spacing:.02em;font-size:14.5px}
.trust .sep{width:5px;height:5px;border-radius:50%;background:var(--cyan);opacity:.55}

/* ---- grids / cards ---- */
.grid{display:grid;gap:24px}
.g-prod{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-sect{grid-template-columns:repeat(5,minmax(0,1fr))}
.g-blog{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 10px 24px -20px rgba(9,26,40,.42);transition:transform .22s ease,box-shadow .22s ease,border-color .22s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 32px -24px rgba(9,26,40,.58);border-color:#b7d6e2}
.card .media{position:relative;aspect-ratio:16/9;overflow:hidden;background:radial-gradient(900px 360px at 50% 20%,#0a336f 0%,#03193b 62%);display:flex;align-items:center;justify-content:center;padding:0}
.card .media img{width:100%;height:100%;object-fit:contain;object-position:center;transition:transform .45s ease;filter:none;image-rendering:auto;backface-visibility:hidden;transform:translateZ(0)}
.card:hover .media img{transform:translateZ(0) scale(1.018)}
.card .media::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(6,20,34,0) 72%,rgba(6,20,34,.16))}
.kicker{position:absolute;top:13px;left:13px;z-index:2;display:inline-flex;align-items:center;gap:7px;background:rgba(6,20,34,.72);backdrop-filter:blur(6px);color:#dff5ff;border:1px solid var(--line-d2);font-family:var(--font-d);font-weight:700;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;padding:6px 11px;border-radius:999px}
.kicker .d{width:6px;height:6px;border-radius:50%;background:var(--grad)}
.card .body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.card .en{font-size:12px;color:var(--cyan);font-weight:600;letter-spacing:.03em;margin-bottom:9px;font-family:var(--font-d);text-transform:uppercase}
.card h3{font-size:20px;margin:0 0 9px}
.card p{color:var(--muted);font-size:15px;margin:0 0 18px;flex:1}
.card-link{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-d);font-weight:700;font-size:14.5px;color:var(--ink);margin-top:auto}
.card-link .ic{width:18px;height:18px;color:var(--cyan);transition:transform .2s}
.card:hover .card-link .ic{transform:translateX(4px)}
.bg-mist .sec-head h2,.bg-mist .card h3{color:#fff}
.bg-mist .lead{color:var(--muted-d)}
.bg-mist .card{background:rgba(6,39,91,.72);border-color:var(--line-d2)}
.bg-mist .card h3{color:#fff}.bg-mist .card p{color:#c6d5e1}.bg-mist .card .en{color:var(--cyan-1)}.bg-mist .card-link{color:#fff}


.hero-visual::before{content:"";position:absolute;inset:-22px 24px 34px -18px;border:1px solid rgba(96,216,239,.18);background:linear-gradient(135deg,rgba(25,183,216,.12),rgba(121,200,67,.06));transform:translate(18px,18px);z-index:-1}
.hero-frame::before{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(90deg,rgba(3,25,59,.18),rgba(3,25,59,0) 30%),linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,0) 18%)}
.product-note{margin-top:18px;padding:18px 20px;border:1px solid rgba(25,183,216,.28);background:linear-gradient(135deg,rgba(25,183,216,.08),rgba(121,200,67,.06));border-radius:14px;color:#294456;font-size:15.5px}
.deep-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:24px}.deep-item{padding:22px;border:1px solid var(--line);border-radius:14px;background:#fff}.deep-item h3{font-size:18px;margin:0 0 8px}.deep-item p{color:var(--muted);font-size:15.5px;margin:0}
.dark .deep-item,.bg-mist .deep-item{background:rgba(255,255,255,.04);border-color:var(--line-d)}.dark .deep-item p,.bg-mist .deep-item p{color:var(--muted-d)}
@media(prefers-reduced-motion:reduce){.hero-slide{animation:none;opacity:1}.hero-slide:not(:first-child){display:none}.card,.btn,.media img{transition:none!important}}


/* image quality: preserve full asset in product windows */
.card .media picture,.card .media picture img{width:100%;height:100%}
.card .media img[src*="hantech-filter-bag-fabric"],
.card .media img[src*="hantech-baghouse-filter-installation"],
.card .media img[src*="hantech-industrial-fan-maintenance"],
.card .media img[src*="hantech-air-slide"]{object-fit:contain}

/* ---- split ---- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.split.rev .col-a{order:2}
.media-frame{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);border:1px solid rgba(9,26,40,.08)}
.media-frame img{width:100%;aspect-ratio:16/9;object-fit:contain;object-position:center;background:radial-gradient(900px 360px at 50% 20%,#0a336f 0%,#03193b 62%);filter:none;image-rendering:auto}
.dark .media-frame{border-color:var(--line-d2)}
.float-badge{position:absolute;right:-14px;bottom:22px;background:rgba(8,22,37,.9);backdrop-filter:blur(12px);border:1px solid var(--line-d2);border-radius:15px;padding:14px 18px;display:flex;gap:13px;align-items:center;box-shadow:var(--sh);color:#fff}
.float-badge .ic-wrap{width:40px;height:40px;border-radius:11px;background:var(--grad-soft);color:var(--cyan-1);display:grid;place-items:center}
.float-badge b{font-family:var(--font-d);font-size:14px;display:block}
.float-badge span{display:block;color:#9fb4c0;font-size:12px;margin-top:2px}
.checklist{display:grid;gap:13px;margin-top:26px}
.check{display:flex;gap:13px;align-items:center;font-weight:500;font-size:15.5px;color:var(--ink)}
.dark .check{color:#dbe8ee}
.check .cbox{flex:none;width:27px;height:27px;border-radius:8px;display:grid;place-items:center;background:var(--grad-soft);color:var(--cyan)}
.dark .check .cbox{color:var(--cyan-1)}
.check .cbox .ic{width:15px;height:15px}


.guarantee-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:28px}
.guarantee{position:relative;padding:18px 18px 18px 20px;border:1px solid rgba(25,183,216,.24);border-radius:14px;background:linear-gradient(135deg,rgba(25,183,216,.08),rgba(121,200,67,.05));box-shadow:0 10px 24px -22px rgba(9,26,40,.45)}
.guarantee::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--grad)}
.guarantee b{display:block;font-family:var(--font-d);font-size:17px;line-height:1.16;color:var(--ink);letter-spacing:-.01em;margin-bottom:7px}
.guarantee span{display:block;color:#4a6270;font-size:14.5px;line-height:1.45}
.dark .guarantee,.bg-mist .guarantee{background:rgba(255,255,255,.045);border-color:var(--line-d2)}
.dark .guarantee b,.bg-mist .guarantee b{color:#fff}.dark .guarantee span,.bg-mist .guarantee span{color:var(--muted-d)}

/* ---- icon badge / spec ---- */
.ic-badge{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;background:var(--grad-soft);color:var(--cyan);margin-bottom:18px}
.ic-badge .ic{width:24px;height:24px}
.dark .ic-badge{background:rgba(255,255,255,.06);color:var(--cyan-1)}
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:8px}
.spec{padding:28px 26px;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;transition:transform .2s,box-shadow .2s}
.spec:hover{transform:translateY(-4px);box-shadow:var(--sh-card)}
.dark .spec{background:rgba(255,255,255,.03);border-color:var(--line-d)}
.spec h3{font-size:18px;margin:0 0 9px}
.spec p{color:var(--muted);font-size:15px;margin:0}
.dark .spec p{color:var(--muted-d)}

/* ---- process steps ---- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:8px}
.step{position:relative;padding:28px 24px;border:1px solid var(--line-d);border-radius:var(--r-lg);background:rgba(255,255,255,.025)}
.step .n{font-family:var(--font-d);font-weight:800;font-size:16px;color:#04141c;background:var(--grad);width:42px;height:42px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px}
.step h3{color:#fff;font-size:18px;margin:0 0 9px}
.step p{color:var(--muted-d);font-size:14.5px;margin:0}
.process-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:34px;align-items:stretch;margin-top:10px}
.process-visual{position:relative;border:1px solid var(--line-d2);border-radius:24px;overflow:hidden;min-height:420px;background:#03193b;box-shadow:0 28px 58px -34px rgba(0,0,0,.9)}
.process-visual img{width:100%;height:100%;min-height:420px;object-fit:cover;object-position:center;filter:saturate(1.08) contrast(1.04)}
.process-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(3,25,59,.06) 30%,rgba(3,25,59,.86));pointer-events:none}
.process-caption{position:absolute;left:22px;right:22px;bottom:22px;z-index:2;color:#fff;font-family:var(--font-d);font-weight:800;font-size:20px;line-height:1.2;text-shadow:0 6px 22px rgba(0,0,0,.45)}
.process-track{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;counter-reset:process}
.process-card{position:relative;padding:20px 18px 18px 54px;border:1px solid var(--line-d);border-radius:18px;background:linear-gradient(135deg,rgba(255,255,255,.055),rgba(255,255,255,.022));min-height:132px}
.process-card::before{counter-increment:process;content:counter(process, decimal-leading-zero);position:absolute;left:16px;top:18px;width:28px;height:28px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#03131c;font-family:var(--font-d);font-size:12px;font-weight:900}
.process-card h3{color:#fff;font-size:17px;margin:0 0 7px;line-height:1.2}
.process-card p{color:var(--muted-d);font-size:14.2px;margin:0;line-height:1.52}
.process-card.highlight{border-color:rgba(96,216,239,.5);background:linear-gradient(135deg,rgba(25,183,216,.13),rgba(121,200,67,.05))}
.bg-paper .process-layout,.bg-mist .process-layout{align-items:start}.bg-paper .process-card,.bg-mist .process-card{background:#fff;border-color:var(--line)}.bg-paper .process-card h3,.bg-mist .process-card h3{color:var(--ink)}.bg-paper .process-card p,.bg-mist .process-card p{color:var(--muted)}

/* ---- references band ---- */
.refs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:8px}
.ref{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;border:1px solid var(--line-d2)}
.ref img{width:100%;height:100%;object-fit:cover;object-position:center;background:#03193b;transition:transform .45s;filter:none;image-rendering:auto}
.ref:hover img{transform:scale(1.06)}
.ref::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,14,24,0) 40%,rgba(5,14,24,.78))}
.ref b{position:absolute;left:18px;bottom:16px;z-index:2;color:#fff;font-family:var(--font-d);font-size:15px;letter-spacing:.01em}

/* ---- cta band ---- */
.cta-band{position:relative;border-radius:26px;overflow:hidden;background:linear-gradient(120deg,#0a1d30,#0e2842);border:1px solid var(--line-d2);padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(620px 300px at 88% 8%,rgba(10,159,206,.24),transparent 60%),radial-gradient(520px 260px at 0% 100%,rgba(93,180,58,.16),transparent 55%);pointer-events:none}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(26px,3vw,36px);max-width:660px}
.cta-band p{color:#b7cbd7;margin:12px 0 0;max-width:560px;font-size:17px}
.cta-actions{display:flex;flex-direction:column;gap:12px;min-width:230px}

/* ---- page hero ---- */
.page-hero{position:relative;color:var(--text-d);overflow:hidden;padding:120px 0 132px;min-height:560px;background:#03193b;display:flex;align-items:center}
.page-hero::before{content:"";position:absolute;inset:0;z-index:2;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:46px 46px;-webkit-mask-image:radial-gradient(120% 100% at 82% 0%,#000,transparent 72%);mask-image:radial-gradient(120% 100% at 82% 0%,#000,transparent 72%);pointer-events:none}
.page-hero::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(3,25,59,.94) 0%,rgba(3,25,59,.72) 44%,rgba(3,25,59,.34) 100%),linear-gradient(180deg,rgba(3,25,59,.20),rgba(3,25,59,.84));pointer-events:none}
.page-hero-slider{position:absolute;inset:0;z-index:0;background:#03193b;overflow:hidden}
.page-hero-slider img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:0;transform:scale(1.04);animation:pageHeroSlide 18s ease-in-out infinite;filter:saturate(1.14) contrast(1.06)}
.page-hero-slider img:first-child{opacity:1}
.page-hero-slider img:nth-child(2){animation-delay:6s}.page-hero-slider img:nth-child(3){animation-delay:12s}
@keyframes pageHeroSlide{0%{opacity:0;transform:scale(1.055)}5%{opacity:1}31%{opacity:1;transform:scale(1.01)}38%{opacity:0;transform:scale(1.025)}100%{opacity:0}}
.page-hero .wrap{position:relative;z-index:3;width:100%}
.crumb{display:flex;gap:9px;align-items:center;font-size:14.5px;color:#b9cbd7;font-family:var(--font-d);font-weight:700;margin-bottom:22px;flex-wrap:wrap;text-shadow:0 2px 12px rgba(0,0,0,.38)}
.crumb a{color:#b9cbd7}
.crumb a:hover{color:var(--cyan-1)}
.crumb .s{opacity:.65}
.crumb .cur{color:#eef8ff}
.page-hero h1{font-size:clamp(38px,6vw,76px);line-height:1.01;letter-spacing:-.034em;color:#fff;max-width:980px;overflow-wrap:break-word;text-wrap:balance;text-shadow:0 8px 34px rgba(0,0,0,.42)}
.page-hero .lead{margin-top:22px;max-width:820px;color:#d7e7f0;font-size:21px;line-height:1.58;text-shadow:0 3px 18px rgba(0,0,0,.34)}
.page-hero .rule{height:4px;width:112px;background:var(--grad);border-radius:3px;margin-top:30px}
.page-hero .kbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.pill{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border:1px solid var(--line-d2);border-radius:999px;font-family:var(--font-d);font-weight:600;font-size:12.5px;color:#cfe0e8;background:rgba(255,255,255,.03);letter-spacing:.02em}
.pill .d{width:6px;height:6px;border-radius:50%;background:var(--grad)}

/* ---- detail layout ---- */
.layout-2{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:52px;align-items:start}
.prose h2{font-size:clamp(24px,2.6vw,32px);margin:0 0 14px}
.prose p{color:var(--muted);font-size:17px;margin:0 0 16px}
.aside{position:sticky;top:108px;display:grid;gap:20px}
.aside-card{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff;box-shadow:var(--sh-card)}
.aside-card .media{aspect-ratio:16/9;overflow:hidden;background:#03193b}
.aside-card .media img{width:100%;height:100%;object-fit:contain;object-position:center;background:radial-gradient(900px 360px at 50% 20%,#0a336f 0%,#03193b 62%);filter:none;image-rendering:auto}
.aside-card .body{padding:24px}
.aside-card h3{font-size:19px;margin:0 0 6px}
.aside-card .sm{color:var(--muted);font-size:14.5px;margin:0 0 16px}
.contact-rows{display:grid;gap:2px;margin:0 0 18px}
.contact-rows a{display:flex;gap:11px;align-items:center;padding:9px 0;color:var(--ink);font-size:15px;font-weight:500;border-bottom:1px solid var(--line)}
.contact-rows a:last-child{border-bottom:0}
.contact-rows .ic{color:var(--cyan);width:18px;height:18px}
.location-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.location-card{border:1px solid var(--line);border-radius:14px;padding:16px;background:linear-gradient(135deg,#fff,rgba(239,247,250,.65))}
.location-card b{display:block;font-family:var(--font-d);font-size:15px;color:var(--ink);margin-bottom:6px}
.location-card span{display:block;color:var(--muted);font-size:14.5px;line-height:1.45}
.location-card a{display:inline-flex;align-items:center;gap:7px;margin-top:10px;font-family:var(--font-d);font-weight:700;font-size:13.5px;color:var(--cyan)}
.map-card{margin-top:16px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;box-shadow:var(--sh-card)}
.map-card iframe{display:block;width:100%;height:330px;border:0;background:#eef5f8}
.map-card .map-note{padding:14px 16px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}

/* ---- forms ---- */
.form{display:grid;gap:15px}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field{display:grid;gap:7px}
.field label{font-family:var(--font-d);font-weight:600;font-size:13px;color:var(--ink);letter-spacing:.01em}
.form input,.form select,.form textarea{width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:12px;font:inherit;font-size:15px;color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s}
.form input::placeholder,.form textarea::placeholder{color:#93a4ad}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(10,159,206,.16)}
.form textarea{min-height:130px;resize:vertical}
.form-note{font-size:13.5px;color:var(--muted-2);margin-top:4px}

/* ---- article ---- */
.article{max-width:764px}
.article .hero-img{margin:0 0 30px;border-radius:22px;overflow:hidden;border:1px solid var(--line);background:#03193b;box-shadow:var(--sh-card)}
.article .hero-img img{width:100%;aspect-ratio:16/9;object-fit:contain;object-position:center;background:radial-gradient(900px 360px at 50% 20%,#0a336f 0%,#03193b 62%);filter:none;image-rendering:auto}
.article .lede{font-size:20px;color:var(--ink);font-weight:500;line-height:1.55;margin:0 0 26px}
.article h2{font-size:clamp(23px,2.6vw,30px);margin:38px 0 14px}
.article p{font-size:17.5px;color:#42585f;margin:0 0 18px;line-height:1.7}
.article .inline-cta{margin-top:30px}
.related-list{display:grid;gap:2px;margin-top:16px}
.related-list a{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--line);font-family:var(--font-d);font-weight:600;color:var(--ink);transition:color .2s}
.related-list a:hover{color:var(--cyan)}
.related-list a .ic{color:var(--cyan);width:18px;height:18px}

/* ---- HVAC product showcase ---- */
.hvac-showcase{background:linear-gradient(180deg,#f5f8fb 0%,#fff 100%)}
.hvac-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch;margin-bottom:34px}
.hvac-feature{position:relative;min-height:430px;border-radius:30px;overflow:hidden;background:#0b2135;box-shadow:0 28px 70px -35px rgba(7,22,38,.55)}
.hvac-feature img,.hvac-tile img,.hvac-wide img{width:100%;height:100%;object-fit:cover;display:block}
.hvac-feature::after,.hvac-wide::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,16,28,0) 35%,rgba(4,16,28,.82) 100%)}
.hvac-caption{position:absolute;left:26px;right:26px;bottom:24px;z-index:2;color:#fff}
.hvac-caption .tag{display:inline-flex;background:rgba(0,206,209,.16);border:1px solid rgba(112,238,242,.35);color:#9ffaff;border-radius:999px;padding:7px 12px;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
.hvac-caption h3{font-family:var(--font-d);font-size:clamp(28px,3vw,44px);line-height:1.03;margin:0 0 8px}.hvac-caption p{margin:0;color:#d7e7ee;max-width:640px}
.hvac-side{display:grid;gap:18px}.hvac-tile{position:relative;border-radius:24px;overflow:hidden;background:#fff;min-height:206px;box-shadow:0 18px 45px -32px rgba(7,22,38,.45);border:1px solid rgba(12,38,58,.08)}
.hvac-tile .mini{position:absolute;left:18px;right:18px;bottom:16px;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-radius:16px;padding:12px 14px;color:#0b2236;font-weight:800;box-shadow:0 12px 30px -22px rgba(7,22,38,.5)}
.hvac-product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:24px}.hvac-product{background:#fff;border:1px solid rgba(12,38,58,.09);border-radius:22px;overflow:hidden;box-shadow:0 18px 46px -34px rgba(7,22,38,.45)}
.hvac-product .pic{height:190px;background:#eef4f7}.hvac-product .pic img{width:100%;height:100%;object-fit:cover}.hvac-product .txt{padding:18px}.hvac-product h3{font-family:var(--font-d);font-size:19px;margin:0 0 8px;color:#102b42}.hvac-product p{font-size:14px;line-height:1.55;margin:0;color:#5c7180}
.hvac-wide{position:relative;min-height:360px;border-radius:28px;overflow:hidden;margin-top:22px;background:#0b2135}.hvac-wide .hvac-caption h3{max-width:760px}
@media(max-width:980px){.hvac-hero-grid{grid-template-columns:1fr}.hvac-product-grid{grid-template-columns:repeat(2,1fr)}.hvac-feature{min-height:360px}}
@media(max-width:620px){.hvac-product-grid{grid-template-columns:1fr}.hvac-feature,.hvac-wide{min-height:300px}.hvac-tile{min-height:190px}.hvac-caption{left:18px;right:18px;bottom:18px}}



/* ---- global product technical intelligence sections ---- */
.pt-showcase{background:linear-gradient(180deg,#f8fbfd 0%,#eef5f8 100%)}
.pt-intro{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:stretch;margin:22px 0 28px}.pt-image{position:relative;border-radius:30px;overflow:hidden;background:#0b2135;min-height:360px;box-shadow:0 26px 70px -38px rgba(7,22,38,.58)}.pt-image img{width:100%;height:100%;object-fit:cover;display:block}.pt-image::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,16,28,0) 25%,rgba(4,16,28,.82) 100%)}.pt-image .cap{position:absolute;left:24px;right:24px;bottom:22px;color:#fff;z-index:2}.pt-image h3{font-family:var(--font-d);font-size:clamp(25px,2.9vw,40px);line-height:1.05;margin:0 0 10px;color:#fff}.pt-image p{margin:0;color:#d7e7ee}.pt-panel{background:#fff;border:1px solid rgba(12,38,58,.1);border-radius:28px;padding:24px;box-shadow:0 22px 54px -38px rgba(7,22,38,.48)}.pt-panel h3{font-family:var(--font-d);font-size:23px;margin:0 0 14px;color:#102b42}.pt-panel ul{margin:0;padding-left:19px;color:#4f6573;line-height:1.68}.pt-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:20px 0 30px}.pt-card{background:#fff;border:1px solid rgba(12,38,58,.09);border-radius:20px;padding:18px;box-shadow:0 18px 44px -34px rgba(7,22,38,.42)}.pt-card h3{font-family:var(--font-d);font-size:18px;margin:0 0 8px;color:#102b42}.pt-card p{margin:0;color:#5c7180;font-size:14px;line-height:1.55}.pt-table-wrap{overflow:auto;background:#fff;border:1px solid rgba(12,38,58,.1);border-radius:24px;box-shadow:0 22px 52px -38px rgba(7,22,38,.5);margin:18px 0 30px}.pt-table{width:100%;border-collapse:collapse;min-width:850px}.pt-table th,.pt-table td{padding:14px 16px;border-bottom:1px solid rgba(12,38,58,.08);text-align:left;font-size:14px}.pt-table th{background:#0b2135;color:#fff;font-family:var(--font-d);font-size:13px;letter-spacing:.04em;text-transform:uppercase}.pt-table td strong{color:#102b42}.pt-bars{display:grid;grid-template-columns:1fr 1fr;gap:18px}.pt-barbox{background:#fff;border-radius:24px;padding:22px;border:1px solid rgba(12,38,58,.09)}.pt-barbox h3{font-family:var(--font-d);font-size:22px;margin:0 0 12px;color:#102b42}.pt-bar{margin:12px 0}.pt-bar span{display:flex;justify-content:space-between;font-size:13px;font-weight:800;color:#244256;margin-bottom:7px}.pt-bar i{display:block;height:10px;border-radius:999px;background:linear-gradient(90deg,var(--cyan),#16a34a)}
@media(max-width:980px){.pt-intro,.pt-bars{grid-template-columns:1fr}.pt-cards{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.pt-cards{grid-template-columns:1fr}.pt-image{min-height:300px}}
.perf-section{background:#f6fafc}.perf-section .big{color:#102b42}.perf-section .lead{color:#516979}.perf-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;margin-top:22px}.perf-main,.perf-side figure{position:relative;overflow:hidden;border-radius:28px;background:#0b2135;box-shadow:0 24px 58px -38px rgba(7,22,38,.55)}.perf-main{min-height:430px}.perf-main img,.perf-side img{width:100%;height:100%;object-fit:cover;display:block}.perf-main:after,.perf-side figure:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,16,28,0) 35%,rgba(4,16,28,.82) 100%)}.perf-caption{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;color:#fff}.perf-caption h3{font-family:var(--font-d);font-size:24px;line-height:1.1;margin:0 0 8px;color:#fff}.perf-caption p{margin:0;color:#d7e7ee;font-size:14px}.perf-side{display:grid;gap:18px}.perf-side figure{min-height:205px;margin:0}@media(max-width:900px){.perf-grid{grid-template-columns:1fr}.perf-main{min-height:340px}}


/* ---- filter bags technical page ---- */
.fb-showcase{background:linear-gradient(180deg,#fff 0%,#f3f7fa 100%)}
.fb-hero{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch;margin-bottom:30px}.fb-panel{border-radius:30px;overflow:hidden;background:#0b2135;box-shadow:0 26px 70px -38px rgba(7,22,38,.55);position:relative}.fb-panel img{width:100%;height:100%;min-height:390px;object-fit:cover;display:block}.fb-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,16,28,0) 35%,rgba(4,16,28,.78) 100%)}.fb-panel .cap{position:absolute;left:24px;right:24px;bottom:22px;color:#fff;z-index:2}.fb-panel h3{font-family:var(--font-d);font-size:clamp(26px,3vw,42px);line-height:1.05;margin:0 0 10px}.fb-panel p{color:#d7e7ee;margin:0}.fb-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:22px 0 34px}.fb-card{background:#fff;border:1px solid rgba(12,38,58,.09);border-radius:20px;padding:18px;box-shadow:0 18px 44px -34px rgba(7,22,38,.42)}.fb-card h3{font-family:var(--font-d);font-size:18px;margin:0 0 8px;color:#102b42}.fb-card p{margin:0;color:#5c7180;font-size:14px;line-height:1.55}.fb-table-wrap{overflow:auto;background:#fff;border:1px solid rgba(12,38,58,.1);border-radius:24px;box-shadow:0 22px 52px -38px rgba(7,22,38,.5);margin:18px 0 30px}.fb-table{width:100%;border-collapse:collapse;min-width:880px}.fb-table th,.fb-table td{padding:14px 16px;border-bottom:1px solid rgba(12,38,58,.08);text-align:left;font-size:14px}.fb-table th{background:#0b2135;color:#fff;font-family:var(--font-d);font-size:13px;letter-spacing:.04em;text-transform:uppercase}.fb-table td strong{color:#102b42}.fb-rating{display:inline-flex;gap:3px}.fb-dot{width:9px;height:9px;border-radius:50%;background:#cfd9df}.fb-dot.on{background:var(--cyan)}.fb-selection{display:grid;grid-template-columns:1fr 1fr;gap:18px}.fb-decision{background:linear-gradient(135deg,#0b2135,#123b59);color:#fff;border-radius:24px;padding:22px}.fb-decision h3{font-family:var(--font-d);font-size:22px;margin:0 0 10px;color:#fff}.fb-decision ul{margin:0;padding-left:18px;color:#d8e9ef}.fb-bars{background:#fff;border-radius:24px;padding:22px;border:1px solid rgba(12,38,58,.09)}.fb-bars h3{font-family:var(--font-d);font-size:22px;margin:0 0 12px;color:#102b42}.fb-bar{margin:12px 0}.fb-bar span{display:flex;justify-content:space-between;font-size:13px;font-weight:800;color:#244256;margin-bottom:7px}.fb-bar i{display:block;height:10px;border-radius:999px;background:linear-gradient(90deg,var(--cyan),#16a34a);box-shadow:0 8px 20px -12px rgba(0,206,209,.9)}
@media(max-width:980px){.fb-hero,.fb-selection{grid-template-columns:1fr}.fb-cards{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.fb-cards{grid-template-columns:1fr}.fb-panel img{min-height:300px}}

/* ---- footer ---- */
.footer{background:var(--navy-900);color:#a4b8c2;padding:72px 0 26px;position:relative}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:.75}
.f-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1.15fr;gap:36px}
.footer .flogo{height:52px;width:auto;margin-bottom:18px}
.footer .fabout{color:#8ea4af;font-size:15px;line-height:1.6;margin:0 0 18px;max-width:330px}
.footer h4{color:#fff;font-family:var(--font-d);font-size:13px;text-transform:uppercase;letter-spacing:.14em;margin:0 0 18px}
.f-links a{display:block;color:#a4b8c2;padding:6px 0;font-size:15px;transition:color .2s,padding-left .2s}
.f-links a:hover{color:var(--cyan-1);padding-left:5px}
.f-contact a{display:flex;gap:11px;align-items:center;color:#a4b8c2;padding:8px 0;font-size:15px}
.f-contact .ic{color:var(--cyan-1);width:18px;height:18px}
.f-bot{border-top:1px solid var(--line-d);margin-top:46px;padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:#6d8391;font-size:13.5px}
.f-bot .en{color:#5a707e}

/* ---- whatsapp float ---- */
.wa-float{position:fixed;right:22px;bottom:22px;z-index:80;width:64px;height:64px;border-radius:20px;background:linear-gradient(145deg,#31e978,#18b957);color:#fff;display:grid;place-items:center;box-shadow:0 20px 42px -14px rgba(37,211,102,.85), inset 0 1px 0 rgba(255,255,255,.35);border:1px solid rgba(255,255,255,.32)}
.wa-float svg{width:32px;height:32px}
.wa-float::before{content:"";position:absolute;inset:-4px;border-radius:24px;border:2px solid rgba(37,211,102,.72);animation:waPulse 2.4s ease-out infinite}
@keyframes waPulse{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.9);opacity:0}}
@media(prefers-reduced-motion:reduce){.wa-float::before{animation:none}}


/* hero slider visibility hardening */
.hero-frame{isolation:isolate}
.hero-frame .hero-slider{display:block;position:absolute;inset:0;z-index:1;overflow:hidden}
.hero-frame .hero-slider img{display:block;position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:0;animation:heroSlide 18s ease-in-out infinite;filter:saturate(1.12) contrast(1.06)}
.hero-frame .hero-slider img:first-child{opacity:1}
.hero-frame .hero-slider img:nth-child(2){animation-delay:6s}.hero-frame .hero-slider img:nth-child(3){animation-delay:12s}

/* ---- responsive ---- */
@media(max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;gap:44px;padding-top:64px;padding-bottom:72px}
  .hero-visual{max-width:720px;min-height:420px}
  .hero-frame{min-height:420px}.hero-frame img{height:420px}
  .g-prod{grid-template-columns:repeat(2,1fr)}
  .g-sect{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .process-layout{grid-template-columns:1fr}
  .process-visual,.process-visual img{min-height:340px}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .layout-2{grid-template-columns:minmax(0,1fr);gap:40px}
  .aside{position:static}
}
@media(max-width:900px){
  .menu{display:none}
  .nav-toggle{display:flex}
  .nav-cta .btn-primary{display:none}
  .lang-switch{margin-left:auto}
  .lang-switch button{padding:10px 10px;font-size:11.5px}
  .split{grid-template-columns:minmax(0,1fr);gap:38px}
  .split.rev .col-a{order:0}
  .g-blog{grid-template-columns:repeat(2,1fr)}
  .refs{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 30px}
  .cta-actions{width:100%}
}
@media(max-width:640px){
  .guarantee-grid{grid-template-columns:1fr}
  .page-hero{min-height:430px;padding:78px 0 88px}
  .page-hero h1{font-size:clamp(34px,10vw,48px)}
  .page-hero .lead{font-size:18px}
  .section{padding:64px 0}.section-sm{padding:48px 0}
  .g-prod,.g-sect,.g-blog{grid-template-columns:1fr}
  .refs{grid-template-columns:1fr}
  .spec-grid,.steps{grid-template-columns:1fr}
  .location-grid{grid-template-columns:1fr}
  .map-card iframe{height:280px}
  .process-track{grid-template-columns:1fr}
  .process-card{min-height:auto}
  .process-caption{font-size:16px}
  .process-visual,.process-visual img{min-height:300px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px 16px}
  .form .row2{grid-template-columns:1fr}
  .tb-item.mail{display:none}
  .topbar .wrap{justify-content:flex-end;padding-left:16px;padding-right:16px;min-height:50px;max-width:none;width:100%}
  .tb-item .ic{width:26px;height:26px}
  .tb-item{font-size:14px}
  .topbar .wrap{justify-content:flex-end;padding-left:16px;padding-right:16px;min-height:50px;max-width:none;width:100%}
  .tb-item .ic{width:26px;height:26px}
  .tb-item{font-size:14px}
  .brand img{height:105px;max-width:275px}
  .nav .wrap{min-height:126px;gap:10px}
  .lang-switch{padding:3px}.lang-switch button{padding:9px 8px;font-size:11px}
  .nav-toggle{width:42px;height:42px}
  .cta-band h2{font-size:26px}
}
@media(max-width:420px){
  .tb-left{gap:14px}.topbar{font-size:12.5px}
  .btn{padding:12px 18px;font-size:14px}
}

/* dynamic full image slider timing */
@keyframes hantechFullSlider{0%{opacity:0;transform:scale(1.045)}1.2%{opacity:1}2.500%{opacity:1;transform:scale(1.005)}4.000%{opacity:0;transform:scale(1.018)}100%{opacity:0;transform:scale(1.045)}}
.hero-slider img,.hero-slide,.hero-frame .hero-slider img,.page-hero-slider img{animation-name:hantechFullSlider!important;animation-duration:112s!important;animation-timing-function:ease-in-out!important;animation-iteration-count:infinite!important}
.hero-slider img:nth-child(1),.hero-slide:nth-child(1),.hero-frame .hero-slider img:nth-child(1),.page-hero-slider img:nth-child(1){animation-delay:0s!important}
.hero-slider img:nth-child(2),.hero-slide:nth-child(2),.hero-frame .hero-slider img:nth-child(2),.page-hero-slider img:nth-child(2){animation-delay:4s!important}
.hero-slider img:nth-child(3),.hero-slide:nth-child(3),.hero-frame .hero-slider img:nth-child(3),.page-hero-slider img:nth-child(3){animation-delay:8s!important}
.hero-slider img:nth-child(4),.hero-slide:nth-child(4),.hero-frame .hero-slider img:nth-child(4),.page-hero-slider img:nth-child(4){animation-delay:12s!important}
.hero-slider img:nth-child(5),.hero-slide:nth-child(5),.hero-frame .hero-slider img:nth-child(5),.page-hero-slider img:nth-child(5){animation-delay:16s!important}
.hero-slider img:nth-child(6),.hero-slide:nth-child(6),.hero-frame .hero-slider img:nth-child(6),.page-hero-slider img:nth-child(6){animation-delay:20s!important}
.hero-slider img:nth-child(7),.hero-slide:nth-child(7),.hero-frame .hero-slider img:nth-child(7),.page-hero-slider img:nth-child(7){animation-delay:24s!important}
.hero-slider img:nth-child(8),.hero-slide:nth-child(8),.hero-frame .hero-slider img:nth-child(8),.page-hero-slider img:nth-child(8){animation-delay:28s!important}
.hero-slider img:nth-child(9),.hero-slide:nth-child(9),.hero-frame .hero-slider img:nth-child(9),.page-hero-slider img:nth-child(9){animation-delay:32s!important}
.hero-slider img:nth-child(10),.hero-slide:nth-child(10),.hero-frame .hero-slider img:nth-child(10),.page-hero-slider img:nth-child(10){animation-delay:36s!important}
.hero-slider img:nth-child(11),.hero-slide:nth-child(11),.hero-frame .hero-slider img:nth-child(11),.page-hero-slider img:nth-child(11){animation-delay:40s!important}
.hero-slider img:nth-child(12),.hero-slide:nth-child(12),.hero-frame .hero-slider img:nth-child(12),.page-hero-slider img:nth-child(12){animation-delay:44s!important}
.hero-slider img:nth-child(13),.hero-slide:nth-child(13),.hero-frame .hero-slider img:nth-child(13),.page-hero-slider img:nth-child(13){animation-delay:48s!important}
.hero-slider img:nth-child(14),.hero-slide:nth-child(14),.hero-frame .hero-slider img:nth-child(14),.page-hero-slider img:nth-child(14){animation-delay:52s!important}
.hero-slider img:nth-child(15),.hero-slide:nth-child(15),.hero-frame .hero-slider img:nth-child(15),.page-hero-slider img:nth-child(15){animation-delay:56s!important}
.hero-slider img:nth-child(16),.hero-slide:nth-child(16),.hero-frame .hero-slider img:nth-child(16),.page-hero-slider img:nth-child(16){animation-delay:60s!important}
.hero-slider img:nth-child(17),.hero-slide:nth-child(17),.hero-frame .hero-slider img:nth-child(17),.page-hero-slider img:nth-child(17){animation-delay:64s!important}
.hero-slider img:nth-child(18),.hero-slide:nth-child(18),.hero-frame .hero-slider img:nth-child(18),.page-hero-slider img:nth-child(18){animation-delay:68s!important}
.hero-slider img:nth-child(19),.hero-slide:nth-child(19),.hero-frame .hero-slider img:nth-child(19),.page-hero-slider img:nth-child(19){animation-delay:72s!important}
.hero-slider img:nth-child(20),.hero-slide:nth-child(20),.hero-frame .hero-slider img:nth-child(20),.page-hero-slider img:nth-child(20){animation-delay:76s!important}
.hero-slider img:nth-child(21),.hero-slide:nth-child(21),.hero-frame .hero-slider img:nth-child(21),.page-hero-slider img:nth-child(21){animation-delay:80s!important}
.hero-slider img:nth-child(22),.hero-slide:nth-child(22),.hero-frame .hero-slider img:nth-child(22),.page-hero-slider img:nth-child(22){animation-delay:84s!important}
.hero-slider img:nth-child(23),.hero-slide:nth-child(23),.hero-frame .hero-slider img:nth-child(23),.page-hero-slider img:nth-child(23){animation-delay:88s!important}
.hero-slider img:nth-child(24),.hero-slide:nth-child(24),.hero-frame .hero-slider img:nth-child(24),.page-hero-slider img:nth-child(24){animation-delay:92s!important}
.hero-slider img:nth-child(25),.hero-slide:nth-child(25),.hero-frame .hero-slider img:nth-child(25),.page-hero-slider img:nth-child(25){animation-delay:96s!important}
.hero-slider img:nth-child(26),.hero-slide:nth-child(26),.hero-frame .hero-slider img:nth-child(26),.page-hero-slider img:nth-child(26){animation-delay:100s!important}
.hero-slider img:nth-child(27),.hero-slide:nth-child(27),.hero-frame .hero-slider img:nth-child(27),.page-hero-slider img:nth-child(27){animation-delay:104s!important}
.hero-slider img:nth-child(28),.hero-slide:nth-child(28),.hero-frame .hero-slider img:nth-child(28),.page-hero-slider img:nth-child(28){animation-delay:108s!important}

/* robust JS-controlled slider fallback: first image is always visible until JS starts */
.hero-slider img,.hero-slide,.hero-frame .hero-slider img,.page-hero-slider img{animation:none!important;opacity:0!important;transition:opacity .9s ease,transform 5.5s ease!important}
.hero-slider img:first-child,.hero-slide:first-child,.page-hero-slider img:first-child{opacity:1!important}
.hero-slider img.is-active,.hero-slide.is-active,.page-hero-slider img.is-active{opacity:1!important;transform:scale(1.015)!important}