/* ============================================================
   Jinan Jingyi Lifting Machinery Co., Ltd.
   Global Stylesheet — Wire Rope Electric Hoist Export Website
   Style: Industrial · Minimal · B2B Export · Business-Card clean
   Palette: Navy #0F3460 · Slate #535C68 · White · Accent #E94560
   ============================================================ */

/* ---------- 1. Design Tokens ---------- */
:root{
  --navy-900:#081B33;              /* deepest navy — footer / hero overlay */
  --navy-800:#0B2442;
  --navy-700:#0F3460;              /* primary brand navy */
  --navy-600:#17457F;              /* hover tint */
  --slate-500:#535C68;             /* secondary text */
  --slate-400:#7A8494;             /* muted text */
  --accent-600:#E94560;            /* CTA accent */
  --accent-700:#D63A55;            /* CTA hover */
  --accent-050:#FDECEF;            /* accent tint background */
  --bg:#FFFFFF;
  --bg-soft:#F4F6F9;               /* soft section background */
  --line:#E2E7EE;                  /* hairline borders */
  --ink:#16202D;                   /* headings */
  --radius:6px;
  --shadow-sm:0 1px 2px rgba(14,28,46,.06);
  --shadow-md:0 12px 32px rgba(14,28,46,.09);
  --container:1200px;
  --header-h:76px;
  --font:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}

/* ---------- 2. Reset & Base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 16px)}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--slate-500);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:1rem}
h1,h2,h3,h4{color:var(--ink);line-height:1.22;font-weight:700;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}
::selection{background:var(--navy-700);color:#fff}

/* ---------- 3. Layout Helpers ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--soft{background:var(--bg-soft)}
.section--navy{background:var(--navy-700);color:#D7E0EC}
.section--navy h2,.section--navy h3{color:#fff}
.section--navy .lede{color:#C6D2E2}
.section--tight{padding:72px 0}

/* Section header — overline encodes real info (section index) */
.section-head{max-width:720px;margin-bottom:56px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.overline{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.78rem;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent-600);margin-bottom:14px;
}
.overline::before{content:"";width:26px;height:2px;background:var(--accent-600)}
.section-head--center .overline::after{content:"";width:26px;height:2px;background:var(--accent-600)}
.section-head h2{font-size:clamp(1.7rem,3vw,2.4rem);margin-bottom:16px}
.lede{font-size:1.06rem;color:var(--slate-500)}
.section--navy .overline{color:#FF8CA0}

/* ---------- 4. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;font-size:.95rem;font-weight:600;border-radius:var(--radius);
  transition:background .2s ease,color .2s ease,transform .15s ease,box-shadow .2s ease;
  letter-spacing:.01em;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-accent{background:var(--accent-600);color:#fff;box-shadow:0 6px 18px rgba(233,69,96,.32)}
.btn-accent:hover{background:var(--accent-700);box-shadow:0 8px 22px rgba(233,69,96,.4)}
.btn-navy{background:var(--navy-700);color:#fff}
.btn-navy:hover{background:var(--navy-600)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.65);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-outline{border:1.5px solid var(--navy-700);color:var(--navy-700);background:transparent}
.btn-outline:hover{background:var(--navy-700);color:#fff}
.btn-sm{padding:9px 18px;font-size:.85rem}

/* ---------- 5. Header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  background:rgba(8,27,51,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{background:rgba(8,27,51,.98);box-shadow:0 6px 24px rgba(0,0,0,.22)}
.header-inner{display:flex;align-items:center;gap:32px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:var(--radius);
  background:linear-gradient(135deg,var(--accent-600),#C22843);
  color:#fff;font-weight:800;font-size:1.02rem;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-text strong{color:#fff;font-size:.98rem;font-weight:700;white-space:nowrap}
.brand-text small{color:#9FB2CC;font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.main-nav{margin-left:auto}
.main-nav ul{display:flex;gap:4px}
.main-nav a{
  display:block;padding:9px 14px;color:#CFDAE9;font-size:.9rem;font-weight:500;
  border-radius:var(--radius);transition:color .18s ease,background .18s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav a.active{color:#fff;font-weight:600}
.main-nav a.active::after{content:"";display:block;height:2px;margin:6px auto 0;width:18px;background:var(--accent-600);border-radius:2px}

.header-actions{display:flex;align-items:center;gap:14px}
.lang-toggle{
  color:#9FB2CC;font-size:.8rem;font-weight:600;letter-spacing:.08em;
  padding:6px 10px;border:1px solid rgba(255,255,255,.22);border-radius:var(--radius);
  transition:color .18s,border-color .18s;
}
.lang-toggle:hover{color:#fff;border-color:#fff}
.header-actions .btn-accent{box-shadow:none}

/* Hamburger */
.nav-toggle{display:none;width:40px;height:40px;position:relative;z-index:110}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:9px;width:22px;height:2px;background:#fff;border-radius:2px;transition:transform .25s ease,opacity .2s;
}
.nav-toggle span{top:19px}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-7px) rotate(-45deg)}

/* ---------- 6. Hero ---------- */
.hero{position:relative;min-height:78vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,27,51,.92) 0%,rgba(15,52,96,.78) 55%,rgba(8,27,51,.45) 100%)}
.hero-content{position:relative;z-index:2;padding:calc(var(--header-h) + 48px) 0 88px;max-width:760px}
.hero-kicker{
  display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:#FFB3C0;margin-bottom:20px;padding:7px 14px;border:1px solid rgba(255,179,192,.4);border-radius:999px;
}
.hero h1{color:#fff;font-size:clamp(2.15rem,4.6vw,3.55rem);line-height:1.12;margin-bottom:22px}
.hero-sub{font-size:clamp(1rem,1.6vw,1.18rem);color:#C9D6E6;max-width:620px;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}

/* Hero metrics strip */
.hero-strip{position:relative;z-index:2;background:rgba(255,255,255,.04);border-top:1px solid rgba(255,255,255,.1)}
.hero-strip .container{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:26px 20px;border-left:1px solid rgba(255,255,255,.1)}
.metric:first-child{border-left:none}
.metric strong{display:block;color:#fff;font-size:1.55rem;font-weight:700;letter-spacing:-.02em}
.metric span{font-size:.82rem;color:#9FB2CC;letter-spacing:.04em;text-transform:uppercase}

/* ---------- 7. Advantage cards ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 26px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.adv-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.adv-icon{
  width:52px;height:52px;border-radius:var(--radius);margin-bottom:20px;
  background:var(--navy-700);color:#fff;display:flex;align-items:center;justify-content:center;
}
.adv-card h3{font-size:1.05rem;margin-bottom:10px}
.adv-card p{font-size:.92rem;color:var(--slate-400)}

/* ---------- 8. Product cards ---------- */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.product-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.product-media{aspect-ratio:4/3;overflow:hidden;background:var(--bg-soft)}
.product-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.product-card:hover .product-media img{transform:scale(1.04)}
.product-body{padding:26px;display:flex;flex-direction:column;gap:8px;flex:1}
.product-tag{align-self:flex-start;font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-600);background:var(--accent-050);padding:4px 10px;border-radius:999px}
.product-body h3{font-size:1.1rem}
.product-body .spec-line{font-size:.88rem;color:var(--slate-400)}
.product-body .btn{margin-top:14px;align-self:flex-start}

/* ---------- 9. Two-column feature split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-media{position:relative}
.split-media img{border-radius:var(--radius);box-shadow:var(--shadow-md)}
.check-list{margin-top:6px;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:.97rem}
.check-list .tick{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;margin-top:2px;
  background:var(--navy-700);color:#fff;display:flex;align-items:center;justify-content:center;
}

/* ---------- 10. Application scene cards ---------- */
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.app-card{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;display:block}
.app-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.app-card:hover img{transform:scale(1.05)}
.app-card .app-label{
  position:absolute;inset:auto 0 0 0;padding:40px 22px 18px;
  background:linear-gradient(transparent,rgba(8,27,51,.88));color:#fff;font-weight:600;font-size:.98rem;
}

/* ---------- 11. Certificate cards ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.cert-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  display:flex;flex-direction:column;gap:14px;transition:transform .2s ease,box-shadow .2s ease;
}
.cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.cert-badge{width:54px;height:54px;border-radius:50%;background:var(--accent-050);color:var(--accent-600);display:flex;align-items:center;justify-content:center}
.cert-card h3{font-size:1.05rem}
.cert-card p{font-size:.9rem;color:var(--slate-400)}

/* Notice / callout box */
.notice{
  display:flex;gap:14px;align-items:flex-start;margin-top:40px;
  background:var(--bg-soft);border:1px solid var(--line);border-left:3px solid var(--navy-700);
  border-radius:var(--radius);padding:20px 24px;font-size:.92rem;color:var(--slate-500);
}
.notice svg{flex:0 0 20px;margin-top:2px;color:var(--navy-700)}

/* ---------- 12. Cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.case-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.case-media{aspect-ratio:16/9;background:var(--bg-soft)}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-body{padding:26px;display:flex;flex-direction:column;gap:10px;flex:1}
.case-region{font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-600)}
.case-body h3{font-size:1.08rem}
.case-body p{font-size:.92rem;color:var(--slate-400)}
.case-body ul{display:grid;gap:6px;margin-top:4px;font-size:.88rem;color:var(--slate-500)}
.case-body ul li{display:flex;gap:8px;align-items:flex-start}
.case-body ul li::before{content:"";flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--accent-600);margin-top:8px}

/* ---------- 13. FAQ accordion ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);margin-bottom:14px;overflow:hidden}
.faq-item.is-open{border-color:var(--navy-700)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:20px 24px;text-align:left;color:var(--ink);font-weight:600;font-size:1rem;
}
.faq-q .faq-chev{flex:0 0 22px;width:22px;height:22px;border-radius:50%;border:1.5px solid var(--navy-700);color:var(--navy-700);display:flex;align-items:center;justify-content:center;font-size:.8rem;transition:transform .25s ease,background .25s ease}
.faq-item.is-open .faq-chev{transform:rotate(180deg);background:var(--navy-700);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 24px 22px;font-size:.95rem;color:var(--slate-500)}

/* ---------- 14. Tables ---------- */
.spec-table{width:100%;border-collapse:collapse;table-layout:fixed;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.spec-table th{background:var(--navy-700);color:#fff;text-align:left;padding:14px 18px;font-weight:600;font-size:.9rem;letter-spacing:.02em}
.spec-table td{padding:13px 18px;border-top:1px solid var(--line);font-size:.93rem;vertical-align:top}
.spec-table tbody tr:nth-child(even){background:var(--bg-soft)}
.spec-table td:first-child{color:var(--ink);font-weight:600}

/* ---------- 15. Inquiry / Forms ---------- */
.inquiry{
  background:linear-gradient(135deg,var(--navy-800),var(--navy-700));
  color:#D7E0EC;position:relative;overflow:hidden;
}
.inquiry::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(255,255,255,.08);
}
.inquiry::after{
  content:"";position:absolute;right:20px;top:10px;width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(255,255,255,.06);
}
.inquiry .container{position:relative;z-index:2;display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:center}
.inquiry h2{color:#fff;font-size:clamp(1.6rem,2.8vw,2.2rem);margin-bottom:16px}
.inquiry .lede{color:#C6D2E2;margin-bottom:26px}
.inquiry-points{display:grid;gap:14px;margin-top:6px}
.inquiry-points li{display:flex;gap:12px;align-items:center;font-size:.95rem;color:#D7E0EC}
.inquiry-points .tick{flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--accent-600);color:#fff;display:flex;align-items:center;justify-content:center}

.form-card{background:#fff;border-radius:10px;padding:36px;box-shadow:0 24px 60px rgba(0,0,0,.28)}
.form-card h3{font-size:1.2rem;margin-bottom:6px}
.form-card .form-note{font-size:.86rem;color:var(--slate-400);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:7px}
.form-group label .req{color:var(--accent-600)}
.form-control{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);
  color:var(--ink);background:#fff;transition:border-color .18s ease,box-shadow .18s ease;
}
.form-control:focus{outline:none;border-color:var(--navy-700);box-shadow:0 0 0 3px rgba(15,52,96,.12)}
textarea.form-control{resize:vertical;min-height:110px}
.form-group.has-error .form-control{border-color:var(--accent-600)}
.form-error{display:none;font-size:.78rem;color:var(--accent-600);margin-top:5px}
.form-group.has-error .form-error{display:block}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:6px}
.form-foot small{font-size:.78rem;color:var(--slate-400)}

/* ---------- 16. Modal ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.modal.is-open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(8,27,51,.6);backdrop-filter:blur(3px)}
.modal-card{
  position:relative;background:#fff;border-radius:12px;max-width:440px;width:100%;
  padding:44px 40px;text-align:center;box-shadow:0 30px 80px rgba(0,0,0,.35);
}
.modal-icon{width:64px;height:64px;border-radius:50%;background:var(--navy-700);color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}
.modal-card h3{font-size:1.3rem;margin-bottom:10px}
.modal-card p{font-size:.94rem;color:var(--slate-400);margin-bottom:26px}
.modal-close{position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;color:var(--slate-400);font-size:1.1rem;display:flex;align-items:center;justify-content:center;transition:background .18s,color .18s}
.modal-close:hover{background:var(--bg-soft);color:var(--ink)}

/* ---------- 17. Page hero (inner pages) ---------- */
.page-hero{position:relative;padding:calc(var(--header-h) + 64px) 0 64px;background:var(--navy-900);color:#fff;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,52,96,.55),transparent 70%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{font-size:.8rem;color:#8FA3BF;letter-spacing:.04em;margin-bottom:14px}
.crumbs a{color:#C6D2E2}
.crumbs a:hover{color:#fff}
.crumbs .sep{margin:0 8px;color:#56687F}
.page-hero h1{color:#fff;font-size:clamp(1.9rem,3.6vw,2.9rem);margin-bottom:12px}
.page-hero .page-lead{color:#B9C8DC;max-width:680px;font-size:1.04rem}

/* ---------- 18. Contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:64px}
.contact-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:transform .2s ease,box-shadow .2s ease}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.contact-icon{width:46px;height:46px;border-radius:var(--radius);background:var(--navy-700);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.contact-card h3{font-size:.95rem;margin-bottom:8px}
.contact-card p{font-size:.9rem;color:var(--slate-400);word-break:break-word}
.map-frame{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:360px;background:var(--bg-soft)}
.map-frame iframe{width:100%;height:100%;min-height:360px;border:0;display:block}

/* ---------- 19. Steps (cooperation model) ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:step}
.step{position:relative;padding:26px 20px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;background:var(--navy-700);color:#fff;
  font-weight:700;font-size:.9rem;margin-bottom:16px;
}
.step h3{font-size:.98rem;margin-bottom:8px}
.step p{font-size:.86rem;color:var(--slate-400)}

/* ---------- 20. Footer ---------- */
.site-footer{background:var(--navy-900);color:#A9B8CC;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px}
.footer-brand p{font-size:.9rem;margin-top:16px;max-width:300px;color:#8FA3BF}
.footer-col h4{color:#fff;font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:20px}
.footer-col ul{display:grid;gap:10px;font-size:.9rem}
.footer-col a{transition:color .18s}
.footer-col a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:.88rem}
.footer-contact svg{flex:0 0 16px;margin-top:3px;color:#7D8FA8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:.82rem;color:#6E8099}
.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.footer-legal{display:flex;gap:22px}
.footer-legal a:hover{color:#fff}

/* ---------- 21. WhatsApp float ---------- */
.wa-float{
  position:fixed;right:22px;bottom:22px;z-index:150;
  width:56px;height:56px;border-radius:50%;background:#25D366;color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(37,211,102,.4);transition:transform .2s ease;
}
.wa-float:hover{transform:scale(1.08)}

/* ---------- 22. Responsive ---------- */
@media (max-width:1024px){
  .section{padding:72px 0}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid,.app-grid,.cert-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:20px}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .inquiry .container{grid-template-columns:1fr;gap:44px}
  .split{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head{margin-bottom:40px}
  .hero-strip .container{grid-template-columns:repeat(2,1fr)}
  .metric{padding:18px 14px}
  .metric:nth-child(3){border-left:none}
  /* mobile nav */
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;inset:var(--header-h) 0 auto 0;z-index:100;
    background:rgba(8,27,51,.99);backdrop-filter:blur(10px);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .main-nav.is-open{max-height:460px}
  .main-nav ul{flex-direction:column;padding:14px 20px 22px;gap:2px}
  .main-nav a{padding:13px 12px;font-size:.98rem}
  .main-nav a.active::after{display:none}
  .header-actions .btn-accent{display:none}
  .adv-grid{grid-template-columns:1fr}
  .product-grid,.app-grid,.cert-grid,.case-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .form-foot{flex-direction:column;align-items:stretch}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .page-hero{padding-top:calc(var(--header-h) + 40px)}
}
@media (max-width:480px){
  .steps{grid-template-columns:1fr}
  .hero-strip .container{grid-template-columns:1fr 1fr}
  .metric strong{font-size:1.2rem}
  .form-card{padding:26px 20px}
  .footer-bottom .container{justify-content:center;text-align:center}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}

/* ============================================================
   Unified product & case imagery
   All uploaded product photos use the same 4:3 frame, centered
   with object-fit:contain on a soft-grey background, so vertical
   shots are shown complete and all cards look coordinated.
   ============================================================ */
.product-media,
.case-media{
  aspect-ratio:4/3;
  background:var(--bg-soft);
}
.product-media img,
.case-media img{
  width:100%;
  height:100%;
  object-fit:contain;
  padding:14px;
  display:block;
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:contain;
  background:var(--bg-soft);
  border-radius:var(--radius);
  display:block;
}

/* ============================================================
   Application scene cards & cooperation split-media
   Real product photos: 4:3 frame, object-fit:contain on soft-grey
   background so vertical shots show complete and undistorted.
   ============================================================ */
.app-card{
  background:var(--bg-soft);
}
.app-card img{
  object-fit:contain;
  padding:12px;
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:contain;
  background:var(--bg-soft);
  border-radius:var(--radius);
  display:block;
}