/* ============================================================
   Enterprise Design System — Energy Storage
   风格基调：克制、精密、工业级（对标一线制造业官网）
   ============================================================ */

:root{
  /* 主色：深海军蓝（专业/信任） + 精准绿（能源点缀） */
  --navy-900:#071018;
  --navy-800:#0c1a24;
  --navy-700:#132635;
  --navy-600:#1c3547;
  --primary:#00875a;
  --primary-l:#00a56e;
  --primary-d:#006644;
  --accent:#00c48c;

  /* 中性阶 */
  --ink-900:#0b1520;
  --ink-700:#2b3a47;
  --ink-500:#5a6b7a;
  --ink-400:#7d8d9b;
  --ink-300:#a8b5bf;
  --line:#e6ebef;
  --line-2:#eff3f6;
  --surface:#ffffff;
  --surface-2:#f7f9fb;
  --surface-3:#f1f5f8;

  /* 尺度 */
  --r-sm:4px; --r-md:6px; --r-lg:10px; --r-xl:14px;
  --sh-1:0 1px 2px rgba(11,21,32,.05);
  --sh-2:0 2px 8px rgba(11,21,32,.06),0 1px 2px rgba(11,21,32,.04);
  --sh-3:0 8px 24px rgba(11,21,32,.08),0 2px 6px rgba(11,21,32,.04);
  --sh-4:0 20px 48px rgba(11,21,32,.12),0 4px 12px rgba(11,21,32,.06);
  --maxw:1240px;
  --ease:cubic-bezier(.4,0,.2,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Inter","SF Pro Text","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  color:var(--ink-700);background:var(--surface);
  line-height:1.65;font-size:16px;letter-spacing:-.005em;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  padding-bottom:56px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
svg.ic{width:16px;height:16px;fill:currentColor;flex:none;vertical-align:-3px}

h1,h2,h3,h4{color:var(--ink-900);font-weight:650;letter-spacing:-.022em;line-height:1.22}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--r-md);font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:all .22s var(--ease);
  letter-spacing:-.01em;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{background:var(--primary-d);box-shadow:var(--sh-3);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--line);color:var(--ink-900);background:var(--surface)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:rgba(0,135,90,.03)}

/* ---------- Typographic accents ---------- */
.lead{font-size:17.5px;color:var(--ink-500);max-width:660px;line-height:1.72}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--accent);font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:20px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--accent);display:block}
.kicker{
  display:inline-block;color:var(--primary);font-weight:600;font-size:12px;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px;
}

/* ---------- Topbar ---------- */
.topbar{
  background:var(--navy-900);color:var(--ink-300);
  font-size:13px;padding:0;border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar .container{display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:10px;min-height:40px}
.topbar .contacts{display:flex;gap:26px;flex-wrap:wrap;align-items:center}
.topbar a{display:inline-flex;align-items:center;gap:7px;transition:color .2s var(--ease)}
.topbar a:hover{color:#fff}
.topbar svg.ic{width:14px;height:14px;opacity:.7}
.topbar a:hover svg.ic{opacity:1;color:var(--accent)}
.topbar .contacts:last-child{color:var(--ink-400);font-size:12px;letter-spacing:.04em}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;
  color:var(--ink-900);letter-spacing:-.03em}
.logo .mark{
  width:32px;height:32px;border-radius:var(--r-md);
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;letter-spacing:-.02em;box-shadow:0 2px 8px rgba(0,135,90,.28);
}
.main-nav ul{display:flex;gap:4px;list-style:none}
.main-nav a{
  display:block;font-weight:550;font-size:15px;color:var(--ink-700);
  padding:9px 15px;border-radius:var(--r-md);position:relative;
  transition:all .2s var(--ease);letter-spacing:-.01em;
}
.main-nav a:hover{color:var(--ink-900);background:var(--surface-3)}
.main-nav a.active{color:var(--primary);font-weight:650}
.main-nav a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;
  height:2px;background:var(--primary);border-radius:2px;
}
.lang-switch{margin-left:auto;display:flex;gap:2px;background:var(--surface-3);
  padding:3px;border-radius:var(--r-md);border:1px solid var(--line-2)}
.lang-btn{
  border:none;background:transparent;padding:6px 13px;border-radius:var(--r-sm);
  cursor:pointer;font-weight:600;font-size:12.5px;color:var(--ink-500);
  transition:all .18s var(--ease);font-family:inherit;letter-spacing:.01em;
}
.lang-btn:hover{color:var(--ink-900)}
.lang-btn.active{background:var(--surface);color:var(--ink-900);box-shadow:var(--sh-1)}
.header-cta{padding:9px 20px;font-size:14px}
.nav-toggle{display:none;background:none;border:none;font-size:22px;
  color:var(--ink-900);cursor:pointer;padding:4px 8px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;padding:104px 0 112px;
  background:
    radial-gradient(ellipse 80% 60% at 78% 10%,rgba(0,196,140,.16),transparent 60%),
    linear-gradient(155deg,var(--navy-900) 0%,var(--navy-800) 42%,var(--navy-700) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 80% at 50% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 40%,#000,transparent 78%);
}
.hero::after{
  content:"";position:absolute;right:-8%;bottom:-40%;
  width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,135,90,.22),transparent 66%);
  filter:blur(30px);
}
.hero-inner{position:relative;z-index:2;max-width:760px}
.hero h1{
  font-size:clamp(34px,4.8vw,58px);line-height:1.08;color:#fff;
  margin:0 0 22px;font-weight:700;letter-spacing:-.035em;
}
.hero .lead{color:rgba(255,255,255,.74);font-size:18px;max-width:620px}
.cta-row{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap}
.hero .btn-outline{color:#fff;border-color:rgba(255,255,255,.24);background:rgba(255,255,255,.05)}
.hero .btn-outline:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.42);color:#fff}

/* ---------- Sections ---------- */
section{padding:88px 0}
.bg-light{background:var(--surface-2);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.section-head h2{font-size:clamp(27px,3.2vw,40px);margin:0 0 14px;font-weight:680}
.section-head p{color:var(--ink-500);font-size:16.5px;line-height:1.7}

/* ---------- Grids ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}

/* ---------- Category cards ---------- */
.cat-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:252px;
  display:block;background:var(--navy-800);
  box-shadow:var(--sh-2);transition:all .32s var(--ease);
  border:1px solid var(--line);
}
.cat-card:hover{box-shadow:var(--sh-4);transform:translateY(-3px);border-color:transparent}
.cat-card img{width:100%;height:252px;object-fit:cover;
  transition:transform .6s var(--ease);opacity:.92}
.cat-card:hover img{transform:scale(1.05);opacity:1}
.cat-card .overlay{
  position:absolute;inset:0;color:#fff;padding:26px;
  display:flex;flex-direction:column;justify-content:flex-end;
  background:linear-gradient(to top,rgba(7,16,24,.92) 0%,rgba(7,16,24,.52) 42%,rgba(7,16,24,.06) 100%);
}
.cat-card .overlay h3{font-size:19px;color:#fff;font-weight:640;letter-spacing:-.02em}
.cat-card .link-arrow{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:50%;margin-top:12px;font-size:14px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);
  transition:all .26s var(--ease);
}
.cat-card:hover .link-arrow{background:var(--primary);border-color:var(--primary);transform:translateX(4px)}

/* ---------- Cards (product / case) ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);transition:all .28s var(--ease);
  height:100%;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#d8e0e6}
.product-media{
  height:210px;background:linear-gradient(160deg,var(--surface-2),var(--surface-3));
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  border-bottom:1px solid var(--line-2);
}
.product-media img{width:100%;height:100%;object-fit:contain;padding:20px;
  transition:transform .4s var(--ease)}
.card:hover .product-media img{transform:scale(1.04)}
.product-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.product-body .tag{
  display:inline-block;align-self:flex-start;
  background:rgba(0,135,90,.08);color:var(--primary-d);
  font-size:11px;font-weight:650;padding:4px 10px;border-radius:var(--r-sm);
  margin-bottom:12px;letter-spacing:.06em;text-transform:uppercase;
  border:1px solid rgba(0,135,90,.14);
}
.product-body h3{font-size:17px;margin-bottom:9px;font-weight:640}
.product-body p{font-size:14px;color:var(--ink-500);margin-bottom:16px;
  min-height:60px;line-height:1.68}
.product-body .link{
  color:var(--primary);font-weight:600;font-size:14px;margin-top:auto;
  display:inline-flex;align-items:center;gap:6px;transition:gap .2s var(--ease);
}
.product-body .link::after{content:"→";transition:transform .2s var(--ease)}
.product-body .link:hover{gap:9px}

.case-media{height:216px;overflow:hidden;background:var(--surface-3);position:relative}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .case-media img{transform:scale(1.05)}
.case-body{padding:20px 22px 24px}
.case-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:11.5px;
  font-weight:600;margin-bottom:12px}
.case-meta span{
  background:var(--surface-3);color:var(--ink-500);
  padding:4px 10px;border-radius:var(--r-sm);border:1px solid var(--line);
  letter-spacing:.02em;
}
.case-body h3{font-size:17px;margin-bottom:9px;font-weight:640}
.case-body p{font-size:14px;color:var(--ink-500);line-height:1.68}

/* ---------- Stats ---------- */
.stats{
  background:var(--navy-900);color:#fff;padding:0;
  border-top:1px solid rgba(255,255,255,.06);
}
.stats .container{padding-top:64px;padding-bottom:64px}
.stat{text-align:center;position:relative}
.stat::after{
  content:"";position:absolute;right:0;top:14%;height:72%;width:1px;
  background:rgba(255,255,255,.09);
}
.stat:last-child::after{display:none}
.stat h3{
  font-size:clamp(32px,3.6vw,46px);font-weight:700;color:#fff;
  letter-spacing:-.04em;margin-bottom:8px;
  font-variant-numeric:tabular-nums;
}
.stat p{color:var(--ink-400);font-size:13.5px;letter-spacing:.02em}

/* ---------- Features ---------- */
.features-list{display:grid;gap:26px;margin-top:8px}
.feature{display:flex;gap:16px;align-items:flex-start}
.feature .icon{
  width:42px;height:42px;flex:none;border-radius:var(--r-md);
  background:rgba(0,135,90,.07);border:1px solid rgba(0,135,90,.13);
  display:flex;align-items:center;justify-content:center;font-size:19px;
  transition:all .24s var(--ease);
}
.feature:hover .icon{background:var(--primary);border-color:var(--primary);
  transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,135,90,.24)}
.feature h3{font-size:15.5px;margin-bottom:5px;font-weight:640}
.feature p{font-size:14px;color:var(--ink-500);line-height:1.68}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:10px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:2px 24px;transition:all .22s var(--ease);
}
.faq-item:hover{border-color:#d3dce3;box-shadow:var(--sh-2)}
.faq-item[open]{border-color:rgba(0,135,90,.28);box-shadow:var(--sh-2)}
.faq-item summary{
  cursor:pointer;font-weight:600;color:var(--ink-900);font-size:15.5px;
  padding:19px 0;list-style:none;display:flex;justify-content:space-between;
  align-items:center;gap:16px;letter-spacing:-.012em;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:none;width:11px;height:11px;
  border-right:1.8px solid var(--ink-400);border-bottom:1.8px solid var(--ink-400);
  transform:rotate(45deg) translate(-2px,-2px);transition:all .26s var(--ease);
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(225deg) translate(-2px,-2px);border-color:var(--primary)}
.faq-item .answer{padding:0 0 20px;color:var(--ink-500);font-size:15px;line-height:1.75}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;color:#fff;padding:78px 0;
  background:
    radial-gradient(ellipse 70% 100% at 50% 0%,rgba(0,196,140,.14),transparent 62%),
    linear-gradient(120deg,var(--navy-900),var(--navy-700));
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.45;
  background-image:linear-gradient(rgba(255,255,255,.026) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);
  background-size:56px 56px;
}
.cta-band .container{position:relative;z-index:2}
.cta-band h2{font-size:clamp(25px,3vw,36px);color:#fff;margin-bottom:14px;font-weight:680}
.cta-band p{color:rgba(255,255,255,.7);margin-bottom:30px;font-size:16.5px}
.cta-band .btn{background:#fff;color:var(--navy-900);font-weight:650;padding:13px 32px}
.cta-band .btn:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-900);color:var(--ink-400);padding:72px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1.5fr;gap:44px}
.site-footer .logo{color:#fff}
.site-footer h4{
  color:#fff;margin-bottom:20px;font-size:13px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;
}
.site-footer ul{list-style:none;display:grid;gap:12px}
.site-footer li{display:flex;align-items:center;gap:9px;line-height:1.5}
.site-footer svg.ic{width:14px;height:14px;opacity:.55;flex:none}
.site-footer a{transition:color .2s var(--ease)}
.site-footer a:hover{color:#fff}
.site-footer li:hover svg.ic{opacity:1;color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);margin-top:56px;padding:22px 0;
  font-size:13px;color:var(--ink-400);
}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;text-align:center;color:#fff;padding:76px 0;
  background:
    radial-gradient(ellipse 70% 100% at 50% 0%,rgba(0,196,140,.13),transparent 60%),
    linear-gradient(140deg,var(--navy-900),var(--navy-700));
}
.page-hero::before{
  content:"";position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.026) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);
  background-size:56px 56px;
}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:clamp(29px,3.7vw,44px);color:#fff;margin-bottom:14px;
  font-weight:700;letter-spacing:-.032em}
.page-hero p{color:rgba(255,255,255,.7);font-size:16.5px;max-width:620px;margin:0 auto}

/* ---------- Filters ---------- */
.filter-bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.filter-btn{
  border:1px solid var(--line);background:var(--surface);
  padding:9px 20px;border-radius:var(--r-md);cursor:pointer;
  font-weight:600;font-size:14px;color:var(--ink-500);
  transition:all .2s var(--ease);font-family:inherit;
}
.filter-btn:hover{border-color:var(--ink-300);color:var(--ink-900)}
.filter-btn.active{background:var(--navy-900);border-color:var(--navy-900);color:#fff}

/* ---------- About ---------- */
.about-img img,.about-img video{
  border-radius:var(--r-lg);box-shadow:var(--sh-3);border:1px solid var(--line);
}

/* ---------- Certifications ---------- */
.cert-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 22px;text-align:center;transition:all .24s var(--ease);
}
.cert-card:hover{border-color:rgba(0,135,90,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.cert-card span{
  display:block;font-size:21px;font-weight:700;color:var(--ink-900);
  letter-spacing:-.03em;margin-bottom:8px;
}
.cert-card p{font-size:13px;color:var(--ink-500);line-height:1.6}

/* ---------- Contact ---------- */
.contact-wrap{align-items:start;gap:40px}
.contact-info{
  background:var(--surface-2);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;
}
.contact-info h3{margin-bottom:24px;font-size:19px;font-weight:650}
.info-list{list-style:none;display:grid;gap:22px}
.info-list li{display:flex;gap:15px;align-items:flex-start}
.info-list .ic{
  width:38px;height:38px;flex:none;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  box-shadow:var(--sh-1);
}
.info-list .ic svg.ic{width:17px;height:17px;border:none;background:none;box-shadow:none}
.info-list strong{display:block;color:var(--ink-900);font-size:13px;font-weight:600;
  letter-spacing:.03em;margin-bottom:3px}
.info-list a,.info-list span:not(.ic){color:var(--ink-700);font-size:15px}
.info-list a:hover{color:var(--primary)}

.contact-form-box{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-2);
}
.contact-form-box h3{margin-bottom:24px;font-size:19px;font-weight:650}
#inquiry-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
#inquiry-form input,#inquiry-form textarea{
  width:100%;padding:12px 15px;border:1px solid var(--line);
  border-radius:var(--r-md);font-size:15px;font-family:inherit;
  background:var(--surface);color:var(--ink-900);transition:all .2s var(--ease);
}
#inquiry-form input::placeholder,#inquiry-form textarea::placeholder{color:var(--ink-300)}
#inquiry-form input:focus,#inquiry-form textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(0,135,90,.09);
}
#inquiry-form textarea{margin-bottom:18px;resize:vertical;min-height:130px}

/* ---------- Spec table ---------- */
.spec-table{width:100%;border-collapse:collapse;font-size:14px;margin-top:8px}
.spec-table td{padding:10px 14px;border-bottom:1px solid var(--line-2)}
.spec-table tr:last-child td{border-bottom:none}
.spec-table td:first-child{color:var(--ink-500);width:44%;font-weight:500}
.spec-table td:last-child{color:var(--ink-900);font-weight:600;font-variant-numeric:tabular-nums}
.spec-table tr:hover{background:var(--surface-2)}

/* ---------- Floating contact bar ---------- */
.contact-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  background:rgba(7,16,24,.96);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap;
  padding:10px 16px;border-top:1px solid rgba(255,255,255,.09);
}
.contact-bar a{
  display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.88);
  font-weight:550;font-size:13.5px;padding:8px 17px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);
  transition:all .2s var(--ease);white-space:nowrap;cursor:pointer;
}
.contact-bar a:hover{background:var(--primary);border-color:var(--primary);color:#fff}
.contact-bar svg.ic{width:15px;height:15px}

/* ---------- Toast (WeChat copy) ---------- */
.toast{
  position:fixed;left:50%;bottom:84px;transform:translateX(-50%) translateY(12px);
  background:var(--navy-900);color:#fff;padding:12px 22px;border-radius:var(--r-md);
  font-size:14px;font-weight:550;box-shadow:var(--sh-4);z-index:200;
  opacity:0;pointer-events:none;transition:all .28s var(--ease);
  border:1px solid rgba(255,255,255,.12);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- Scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stat::after{display:none}
  .main-nav{
    position:fixed;left:0;right:0;top:112px;background:var(--surface);
    border-bottom:1px solid var(--line);box-shadow:var(--sh-3);
    flex-direction:column;padding:14px 28px 20px;display:none;
  }
  .main-nav.open{display:flex}
  .main-nav ul{flex-direction:column;gap:2px;width:100%}
  .main-nav a{padding:12px 14px}
  .main-nav a.active::after{display:none}
  .lang-switch{margin-left:auto}
  .header-cta{display:none}
  .nav-toggle{display:block}
  section{padding:64px 0}
}
@media(max-width:620px){
  .grid-3,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  #inquiry-form .form-row{grid-template-columns:1fr}
  .hero{padding:72px 0 78px}
  .topbar .contacts:last-child{display:none}
  .contact-bar a{font-size:12.5px;padding:7px 12px;gap:6px}
  .contact-bar a span{display:none}
  .contact-bar a:first-child span{display:inline}
  .container{padding:0 20px}
  section{padding:56px 0}
}