/* ============================================================
   PENGRONG — Entrance Control Systems | main.css
   Modern industrial B2B theme. Self-hosted, no CDN dependencies.
   ============================================================ */
:root{
  --ink:#141c26;          /* deep charcoal-navy */
  --ink-2:#1d2733;
  --steel:#5c6f82;        /* muted steel text */
  --line:#e3e8ee;
  --bg:#ffffff;
  --bg-soft:#f4f6f9;
  --accent:#e8640c;       /* safety orange */
  --accent-dark:#c95206;
  --accent-soft:#fdf0e4;
  --gold:#f5a623;
  --ok:#1e9e6a;
  --radius:10px;
  --shadow:0 10px 30px rgba(20,28,38,.10);
  --shadow-sm:0 4px 14px rgba(20,28,38,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --max:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-dark)}
h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:-.01em}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section.soft{background:var(--bg-soft)}
.section.dark{background:var(--ink);color:#e8edf3}
.section.dark .lead{color:#aeb9c6}

/* ---------- kicker / headings ---------- */
.kicker{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.kicker::before{content:"";display:inline-block;width:26px;height:3px;background:var(--accent);vertical-align:middle;margin-right:10px;border-radius:2px}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(28px,3.6vw,40px);margin-bottom:14px}
.lead{font-size:17.5px;color:var(--steel)}
.section.dark h2{color:#fff}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15.5px;padding:14px 30px;border-radius:8px;border:2px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;white-space:nowrap}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(232,100,12,.32)}
.btn.primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px)}
.btn.ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn.ghost:hover{border-color:#fff;background:rgba(255,255,255,.12);color:#fff}
.btn.outline{border-color:var(--accent);color:var(--accent)}
.btn.outline:hover{background:var(--accent);color:#fff}
.btn.small{padding:10px 20px;font-size:14px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}

/* ---------- topbar ---------- */
.topbar{background:var(--ink);color:#c3ccd7;font-size:13.5px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;padding-top:8px;padding-bottom:8px;gap:16px;flex-wrap:wrap}
.topbar a{color:#e8edf3}
.topbar a:hover{color:var(--gold)}
.topbar .tb-group{display:flex;gap:22px;flex-wrap:wrap}
.topbar .tb-item{display:inline-flex;align-items:center;gap:7px}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 4px 18px rgba(20,28,38,.12)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{height:46px;width:auto}
.brand-name{font-weight:800;font-size:19px;letter-spacing:.04em;color:var(--ink);line-height:1.15}
.brand-name small{display:block;font-size:10.5px;font-weight:600;letter-spacing:.28em;color:var(--steel)}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none}
.nav-links>li{position:relative;flex-shrink:0}
.nav-links>li>a{display:block;padding:12px 12px;font-weight:600;font-size:15px;color:var(--ink);border-radius:6px;white-space:nowrap}
.nav-links>li>a:hover,.nav-links>li>a.active{color:var(--accent)}
.nav-links>li>a.active{background:var(--accent-soft)}
.has-drop>a::after{content:"▾";font-size:11px;margin-left:6px;color:var(--steel)}
.has-drop{position:relative}
.dropdown.mega-menu{position:absolute;top:100%;left:50%;transform:translate(-50%,10px);display:grid;grid-template-columns:repeat(4,max-content);gap:8px 42px;background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:26px 32px;opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s;z-index:60}
.has-drop:hover .dropdown.mega-menu,.has-drop:focus-within .dropdown.mega-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-head{display:block;background:none;border:0;padding:0;margin:0 0 10px;font-family:inherit;font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--steel);cursor:default;text-align:left}
.mega-col ul{list-style:none;margin:0;padding:0}
.mega-col li a{display:block;padding:7px 0;font-size:14.5px;font-weight:600;color:var(--ink);white-space:nowrap}
.mega-col li a:hover{color:var(--accent)}
@media(max-width:1200px){.dropdown.mega-menu{grid-template-columns:repeat(2,max-content);gap:4px 48px}}
/* featured stars + visually quieter secondary cards */
.feat-stars{color:#e8a020;letter-spacing:.08em;font-size:12px}
.p-card.sec{background:#fafbfc}
.p-card.sec h3{font-size:16px}
.p-card.sec p{font-size:13.5px}
@media(max-width:1150px){
  .nav-links>li>a{padding:12px 9px;font-size:14px}
  .brand-name{font-size:17px}
  .nav-cta{gap:8px}
}
.nav-cta{display:flex;align-items:center;gap:12px}
.hamburger{display:none;background:none;border:0;cursor:pointer;padding:10px}
.hamburger span{display:block;width:26px;height:3px;background:var(--ink);border-radius:2px;margin:5px 0;transition:.25s}

/* ---------- hero carousel ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;min-height:640px;display:flex;align-items:stretch}
.hero-slides{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .9s ease,visibility .9s;pointer-events:none}
.hero-slide.active{opacity:1;visibility:visible;z-index:1;pointer-events:auto}
.hero-slide .hero-bg{position:absolute;inset:0}
.hero-slide .hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-slide .hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,22,31,.94) 20%,rgba(16,22,31,.55) 55%,rgba(16,22,31,.25) 100%)}
.hero-slide .hero-inner{position:relative;z-index:2;width:100%;max-width:var(--max);margin:0 auto;padding:110px 24px 120px;display:flex;align-items:center}
.hero-slide .hero-copy{max-width:780px}
.hero-slide .hero-copy>*{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.hero-slide.active .hero-copy>*{opacity:1;transform:none}
.hero-slide.active .hero-copy>*:nth-child(2){transition-delay:.12s}
.hero-slide.active .hero-copy>*:nth-child(3){transition-delay:.24s}
.hero-slide.active .hero-copy>*:nth-child(4){transition-delay:.36s}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:48px;height:48px;border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(20,28,38,.45);color:#fff;font-size:26px;line-height:1;cursor:pointer;transition:.25s;backdrop-filter:blur(4px)}
.hero-arrow:hover{background:var(--gold);border-color:var(--gold);color:var(--ink)}
.hero-arrow.prev{left:22px}
.hero-arrow.next{right:22px}
.hero-dots{position:absolute;left:0;right:0;bottom:26px;z-index:5;display:flex;justify-content:center;gap:10px}
.hero-dots button{width:11px;height:11px;border-radius:50%;border:0;background:rgba(255,255,255,.4);cursor:pointer;transition:.25s;padding:0}
.hero-dots button.active{background:var(--gold);transform:scale(1.25)}
@media(max-width:860px){.hero{min-height:800px}.hero-arrow{display:none}.hero-slide .hero-inner{padding:64px 20px 84px}.hero-dots{bottom:20px}.hero-badges{gap:8px;margin-top:18px}.hero-badge{padding:7px 12px;font-size:12px}}
.hero h1{font-size:clamp(34px,5vw,58px);max-width:760px;margin-bottom:20px}
.hero h1 .hl{color:var(--gold)}
.hero p.sub{font-size:clamp(16px,2vw,20px);color:#d4dbe4;max-width:640px;margin-bottom:8px}
.hero-badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(4px);padding:9px 16px;border-radius:100px;font-size:13.5px;font-weight:600}
.hero-badge i{font-style:normal;color:var(--gold)}

/* ---------- page hero (inner pages) ---------- */
.page-hero{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.page-hero .ph-bg{position:absolute;inset:0}
.page-hero .ph-bg img{width:100%;height:100%;object-fit:cover;opacity:.28}
.page-hero .ph-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,22,31,.95),rgba(16,22,31,.6))}
.page-hero .container{position:relative;z-index:2;padding-top:64px;padding-bottom:64px}
.page-hero h1{font-size:clamp(30px,4vw,44px);margin:10px 0 12px}
.page-hero p{color:#c9d2dd;max-width:720px;font-size:17px}
.crumb{font-size:13.5px;color:#9aa6b5}
.crumb a{color:#d4dbe4}
.crumb a:hover{color:var(--gold)}
.crumb .sep{margin:0 8px;color:#5c6f82}

/* ---------- cards / grids ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--ink);min-height:340px;display:flex;align-items:flex-end;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
.cat-card::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,14,20,.62) 0%,rgba(10,14,20,.18) 42%,rgba(10,14,20,.9) 78%)}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;transition:opacity .25s ease,transform .5s ease}
.cat-card:hover img{opacity:.75;transform:scale(1.04)}
.cat-card .cc-body{position:relative;z-index:2;padding:24px;color:#fff;background:linear-gradient(transparent,rgba(10,14,20,.88) 45%)}
.cat-card h3{font-size:20px;margin-bottom:8px}
.cat-card p{font-size:14px;color:#d4dbe4;margin-bottom:12px}
.cat-card .more{font-size:14px;font-weight:700;color:var(--gold)}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.product-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.p-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease}
.p-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.p-card .p-img{aspect-ratio:4/3;overflow:hidden;background:#eef1f5}
.p-card .p-img img{width:100%;height:100%;object-fit:contain;transition:transform .5s ease}
.p-card .p-img picture{display:block;width:100%;height:100%}
.p-card:hover .p-img img{transform:scale(1.05)}
.p-card .p-body{padding:22px;display:flex;flex-direction:column;flex:1}
.p-card .p-tag{font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.p-card h3{font-size:18px;margin-bottom:10px}
.p-card h3 a{color:var(--ink)}
.p-card h3 a:hover{color:var(--accent)}
.p-card p{font-size:14.5px;color:var(--steel);flex:1;margin-bottom:16px}
.p-card .p-foot{display:flex;justify-content:space-between;align-items:center}
.link-more{font-weight:700;font-size:14.5px}

/* ---------- stats band ---------- */
.stats-band{background:linear-gradient(120deg,#10161f,#1b2532);color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat{padding:18px 10px;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:20%;height:60%;width:1px;background:rgba(255,255,255,.14)}
.stat .num{font-size:clamp(32px,4vw,48px);font-weight:800;color:var(--gold);line-height:1.1}
.stat .num small{font-size:.55em;font-weight:700}
.stat .lbl{font-size:14.5px;color:#c3ccd7;margin-top:8px}

/* ---------- solutions ---------- */
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.sol-card{display:grid;grid-template-columns:1fr 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
.sol-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.sol-card .s-img{min-height:240px}
.sol-card .s-img img{width:100%;height:100%;object-fit:cover}
.sol-card .s-body{padding:30px}
.sol-card h3{font-size:21px;margin-bottom:10px}
.sol-card p{font-size:15px;color:var(--steel);margin-bottom:14px}
.sol-card ul{list-style:none;margin-bottom:16px}
.sol-card ul li{font-size:14.5px;padding:6px 0 6px 26px;position:relative;color:var(--ink)}
.sol-card ul li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
.sol-block{margin-bottom:26px}
.sol-block:last-child{margin-bottom:0}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.n-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease}
.n-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.n-card .n-img{aspect-ratio:16/9;overflow:hidden}
.n-card .n-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.n-card:hover .n-img img{transform:scale(1.05)}
.n-card .n-body{padding:22px;flex:1;display:flex;flex-direction:column}
.n-date{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--steel);margin-bottom:8px}
.n-card h3{font-size:17.5px;margin-bottom:10px}
.n-card h3 a{color:var(--ink)}
.n-card h3 a:hover{color:var(--accent)}
.n-card p{font-size:14.5px;color:var(--steel);flex:1}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(115deg,var(--accent) 0%,#f07f1a 60%,var(--gold) 130%);color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,rgba(255,255,255,.22),transparent 55%)}
.cta-band .container{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-top:56px;padding-bottom:56px}
.cta-band h2{font-size:clamp(24px,3.4vw,36px);margin-bottom:10px}
.cta-band p{color:#fff;opacity:.92;max-width:560px}
.btn.light{background:#fff;color:var(--accent-dark)}
.btn.light:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn.darkline{border-color:rgba(255,255,255,.7);color:#fff}
.btn.darkline:hover{background:rgba(255,255,255,.15);border-color:#fff;color:#fff}

/* ---------- footer ---------- */
.footer{background:#0d1219;color:#aeb9c6;font-size:14.5px}
.footer .f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:64px 0 44px}
.footer h4{color:#fff;font-size:15.5px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:18px}
.footer ul{list-style:none}
.footer ul li{margin-bottom:10px}
.footer a{color:#aeb9c6}
.footer a:hover{color:var(--gold)}
.f-brand p{margin:14px 0;max-width:320px}
.f-contact li{display:flex;gap:10px;align-items:flex-start}
.f-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#7d8896}

/* ---------- social buttons ---------- */
.socials{display:flex;gap:10px;align-items:center}
.socials a{width:38px;height:38px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);transition:background .25s,transform .25s,border-color .25s}
.socials a svg{width:18px;height:18px;fill:#dfe6ee;transition:fill .25s}
.socials a:hover{background:var(--gold);border-color:var(--gold);transform:translateY(-2px)}
.socials a:hover svg{fill:var(--ink)}
.socials-title{font-size:14px;font-weight:700;margin-bottom:12px;color:#e8edf3}
/* light-background variant (e.g. contact page) */
.socials-light .socials-title{color:var(--ink)}
.socials-light .socials a{background:#eef1f6;border-color:#d5dce5}
.socials-light .socials a svg{fill:#455062}
.socials-light .socials a:hover{background:var(--gold);border-color:var(--gold);transform:translateY(-2px)}
.socials-light .socials a:hover svg{fill:var(--ink)}
@media(max-width:640px){.f-bottom .container .socials{width:100%;justify-content:flex-start}}

/* ---------- product detail ---------- */
.pd-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:start}
.gallery .g-main{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);aspect-ratio:16/9;background:#eef1f4;display:flex;align-items:center;justify-content:center}
.gallery .g-main img{width:100%;height:100%;object-fit:contain}
.g-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.g-thumbs button{border:2px solid transparent;border-radius:8px;overflow:hidden;cursor:pointer;aspect-ratio:16/9;background:#0f141b;padding:0}
.g-thumbs button.active{border-color:var(--accent)}
.g-thumbs img{width:100%;height:100%;object-fit:cover}
.pd-info .p-tag{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.pd-info h1{font-size:clamp(28px,3.4vw,38px);margin-bottom:16px}
.pd-info .pd-desc{color:var(--steel);font-size:16.5px;margin-bottom:22px}
.feat-list{list-style:none;margin:0 0 26px}
.feat-list li{padding:9px 0 9px 32px;position:relative;font-size:15.5px;border-bottom:1px dashed var(--line)}
.feat-list li::before{content:"✓";position:absolute;left:2px;color:var(--ok);font-weight:800;font-size:17px}
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px;margin-top:8px}
.spec-table th,.spec-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table th{background:var(--bg-soft);width:34%;font-weight:700}
.spec-table tr:hover td{background:#fafbfc}
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:6px}
.app-item{background:var(--bg-soft);border-radius:8px;padding:16px 14px;font-size:14px;font-weight:600;text-align:center}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}

/* ---------- forms ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:40px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:700}
.field label .req{color:var(--accent)}
.field input,.field select,.field textarea{font:inherit;font-size:15px;padding:12px 14px;border:1.5px solid var(--line);border-radius:8px;background:#fbfcfd;transition:border .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#fff}
.field textarea{min-height:130px;resize:vertical}
.form-note{font-size:13px;color:var(--steel);margin-top:14px}
.form-ok{display:none;background:#e9f9f1;border:1px solid #bfe8d2;color:#14714a;padding:16px 18px;border-radius:8px;font-weight:600;margin-bottom:18px}
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:44px}
.c-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.c-card .c-ico{font-size:26px;margin-bottom:10px}
.c-card h3{font-size:16.5px;margin-bottom:8px}
.c-card p,.c-card a{font-size:15px;color:var(--steel)}
.c-card a.tel{font-size:18px;font-weight:800;color:var(--ink)}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-grid img{border-radius:var(--radius);box-shadow:var(--shadow)}
.cap-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:8px}
.cap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.cap .cap-n{font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--accent);margin-bottom:8px}
.cap h3{font-size:18px;margin-bottom:10px}
.cap p{font-size:14.5px;color:var(--steel)}
.cert-row{display:flex;gap:16px;flex-wrap:wrap;margin-top:20px}
.cert{border:1.5px dashed #b9c4d1;border-radius:8px;padding:14px 22px;font-weight:700;font-size:14.5px;color:var(--steel);background:#fff}

/* ---------- article ---------- */
.article{max-width:820px;margin:0 auto}
.article .a-meta{display:flex;gap:16px;align-items:center;color:var(--steel);font-size:14px;margin:14px 0 26px}
.article h1{font-size:clamp(28px,3.6vw,40px);margin-bottom:6px}
.article h2{font-size:23px;margin:34px 0 14px}
.article p{margin-bottom:18px;color:#33404f}
.article ul,.article ol{margin:0 0 20px 22px;color:#33404f}
.article li{margin-bottom:8px}
.article .a-hero{border-radius:var(--radius);overflow:hidden;margin:26px 0;box-shadow:var(--shadow-sm)}
.article .toc{background:var(--bg-soft);border-radius:var(--radius);padding:24px 28px;margin:26px 0}
.article .toc h3{font-size:16px;margin-bottom:10px}
.article .toc ol{margin:0 0 0 20px}
.article .callout{background:var(--accent-soft);border-left:4px solid var(--accent);padding:18px 22px;border-radius:0 8px 8px 0;margin:24px 0}

/* ---------- misc ---------- */
.breadcrumb{font-size:13.5px;color:var(--steel);margin-bottom:14px}
.breadcrumb a{color:var(--steel)}
.breadcrumb a:hover{color:var(--accent)}
.divider{height:1px;background:var(--line);margin:56px 0}
.note-box{background:#fff8ef;border:1px solid #f3ddba;border-radius:8px;padding:16px 20px;font-size:14px;color:#8a5a12;margin-top:24px}
.mt-0{margin-top:0}.mb-2{margin-bottom:8px}.center{text-align:center}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- responsive ---------- */
@media(max-width:1024px){
  .cat-grid,.product-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3)::before{display:none}
  .footer .f-grid{grid-template-columns:1fr 1fr}
  .app-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:860px){
  .nav-links{position:fixed;top:0;right:-100%;width:min(320px,84vw);height:100dvh;background:#fff;flex-direction:column;align-items:stretch;padding:90px 26px 26px;gap:2px;box-shadow:-12px 0 30px rgba(0,0,0,.15);transition:right .3s ease;z-index:99}
  .nav-links.open{right:0}
  .nav-links>li>a{padding:13px 10px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .dropdown.mega-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border-radius:0;padding:0;display:none;grid-template-columns:1fr;gap:0;z-index:auto}
  .has-drop:hover .dropdown.mega-menu,.has-drop:focus-within .dropdown.mega-menu{transform:none}
  .has-drop.expanded .dropdown.mega-menu{display:block}
  .mega-col{border-bottom:1px solid var(--line)}
  .mega-col:last-child{border-bottom:0}
  .mega-head{width:100%;display:flex;justify-content:space-between;align-items:center;margin:0;padding:13px 4px;font-size:13px;letter-spacing:.06em;color:var(--ink);cursor:pointer}
  .mega-head::after{content:"+";font-size:18px;font-weight:400;color:var(--steel);line-height:1}
  .mega-col.open .mega-head::after{content:"\2212"}
  .mega-col ul{display:none;padding:0 0 10px}
  .mega-col.open ul{display:block}
  .mega-col li a{padding:8px 4px 8px 14px;font-size:14px;white-space:normal}
  .hamburger{display:block;z-index:100;position:relative}
  .nav-cta .btn{display:none}
  .hamburger.active span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .hamburger.active span:nth-child(2){opacity:0}
  .hamburger.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .hero-inner{padding:80px 24px 90px}
  .section{padding:60px 0}
  .pd-layout,.two-col,.about-grid{grid-template-columns:1fr;gap:32px}
  .sol-card{grid-template-columns:1fr}
  .sol-grid{grid-template-columns:1fr}
  .sol-card .s-img{min-height:200px}
  .form-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .cap-list{grid-template-columns:1fr}
  .cta-band .container{flex-direction:column;align-items:flex-start}
  .topbar .tb-group{gap:12px}
}
@media(max-width:560px){
  .cat-grid,.product-grid,.product-grid.cols-3,.news-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .stat+.stat::before{display:none}
  .footer .f-grid{grid-template-columns:1fr}
  .form-card{padding:26px 20px}
  .btn-row .btn{width:100%;justify-content:center}
}

/* ---- optimization phase A: product template components ---- */
.overview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:22px}
.ov-item{background:var(--bg-soft,#f5f7fa);border:1px solid var(--line,#e4e9f0);border-radius:12px;padding:20px}
.ov-item h3{font-size:15px;margin-bottom:8px;color:var(--ink)}
.ov-item p{font-size:14px;color:var(--steel);margin:0}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table-wrap .spec-table{min-width:420px}
.faq-item{border:1px solid var(--line,#e4e9f0);border-radius:10px;margin-bottom:10px;background:#fff}
.faq-item summary{padding:16px 20px;font-weight:700;font-size:15.5px;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--gold,#e8862e);font-size:20px;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item p{padding:0 20px 18px;color:var(--steel);font-size:15px;margin:0}
.cat-section{margin-bottom:56px}
.cat-section:last-of-type{margin-bottom:0}
@media(max-width:1024px){.overview-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.overview-grid{grid-template-columns:1fr}}

/* ---- optimization phase B: homepage components ---- */
.why-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:8px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 20px}
.why-card h3{font-size:16px;margin-bottom:8px}
.why-card p{font-size:14px;color:var(--steel);margin:0}
.process-steps{display:grid;grid-template-columns:repeat(8,1fr);gap:10px;margin-top:8px}
.step{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 10px;text-align:center}
.step-n{font-size:20px;font-weight:800;color:var(--accent)}
.step-t{font-size:12.5px;font-weight:600;margin-top:6px;line-height:1.35}
.cta-final{background:var(--ink);color:#fff;padding:84px 0;text-align:center}
.cta-final h2{color:#fff;font-size:clamp(28px,4vw,44px);margin:10px 0 12px}
.cta-final p{color:#c9d2dd;font-size:17px;max-width:640px;margin:0 auto}
.cta-final .btn-row{justify-content:center}
.cert-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}
.cert{background:var(--bg-soft);border:1px solid var(--line);border-radius:20px;padding:8px 18px;font-size:13.5px;font-weight:600;color:var(--steel)}
.btn.darkline{border:1.5px solid rgba(255,255,255,.5);color:#fff;background:transparent}
.btn.darkline:hover{background:rgba(255,255,255,.12)}
.btn.light{background:#fff;color:var(--ink)}
@media(max-width:1024px){.why-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(4,1fr)}}
@media(max-width:640px){.why-grid{grid-template-columns:1fr}.process-steps{grid-template-columns:repeat(2,1fr)}}

/* ---- optimization phase D: QC list ---- */
.qc-list{display:grid;gap:14px;max-width:860px}
.qc-row{display:flex;gap:20px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}
.qc-row h3{font-size:16.5px;margin-bottom:6px}
.qc-row p{color:var(--steel);font-size:14.5px;margin:0}

/* ---- fix: grid blowout on mobile (spec tables) ---- */
.two-col>*,.pd-layout>*,.about-grid>*{min-width:0}
.table-wrap{max-width:100%}