/* =========================================
   Zhuocheng New Energy — responsive site
   Breakpoints: 1200 / 960 / 720 / 480
========================================= */

:root{
  --green:#0f9d58; --green-l:#13b56a; --green-d:#0b7a44;
  --blue:#0b6fb8; --navy:#0c2a3e; --navy-2:#102f45;
  --ink:#16202b; --muted:#5b6b7b;
  --bg:#f5f8fa; --card:#ffffff; --line:#e6ecf1;
  --radius:16px; --radius-sm:10px;
  --shadow:0 8px 30px rgba(16,42,62,.08);
  --shadow-lg:0 18px 48px rgba(16,42,62,.16);
  --grad:linear-gradient(135deg,var(--green-l),var(--green-d));
  --grad-hero:linear-gradient(135deg,#0e3247 0%,#0f9d58 100%);
  --touch:44px;
  --container-pad:clamp(16px,4vw,28px);
  --battery:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 130'%3E%3Crect x='22' y='12' width='56' height='104' rx='12' fill='none' stroke='%23ffffff' stroke-width='4' opacity='.55'/%3E%3Crect x='40' y='4' width='20' height='10' rx='3' fill='%23ffffff' opacity='.55'/%3E%3Cpath d='M58 42 L40 72 h12 l-6 22 24 -34 H56 z' fill='%23ffffff' opacity='.55'/%3E%3C/svg%3E");
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
::selection{background:rgba(15,157,88,.18)}

/* container: fluid padding, never overflows */
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 var(--container-pad)}
.narrow{max-width:840px}
.center{text-align:center}

/* ===== buttons (≥44px touch) ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  min-height:42px;
  padding:11px 22px;
  border-radius:var(--radius-sm);
  font-weight:700;font-size:15px;
  border:1.5px solid transparent;cursor:pointer;
  transition:.18s;font-family:inherit;
  white-space:nowrap;
  -webkit-tap-highlight-color:transparent;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(15,157,88,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,157,88,.36)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--green);color:var(--green);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--muted)}
.btn-ghost:hover{color:var(--ink)}
.btn-danger{background:#e23b3b;color:#fff}.btn-danger:hover{background:#c32f2f;transform:translateY(-1px)}
.btn-sm{min-height:36px;padding:7px 13px;font-size:13px}
.btn-lg{min-height:50px;padding:14px 28px;font-size:16px}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:14px;
  height:64px;
}
.brand{
  display:flex;align-items:center;gap:11px;
  font-weight:800;font-size:17px;color:var(--ink);
  letter-spacing:.2px;
  flex:0 0 auto;
}
.brand-logo{height:36px;width:36px;border-radius:9px;box-shadow:0 4px 12px rgba(15,157,88,.25)}
.brand-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:36vw}

.main-nav{
  display:flex;gap:4px;margin-left:8px;
}
.main-nav a{
  min-height:40px;
  padding:9px 14px;
  border-radius:9px;
  color:var(--muted);font-weight:700;
  transition:.15s;
  display:inline-flex;align-items:center;
}
.main-nav a:hover,.main-nav a.active{color:var(--green);background:#eafaf1}

.header-right{
  margin-left:auto;
  display:flex;align-items:center;gap:10px;
  flex:0 0 auto;
}
.lang-switcher{
  display:flex;gap:2px;
  background:#eef2f5;border-radius:9px;padding:3px;
}
.lang-switcher a{
  min-width:36px;min-height:36px;
  padding:5px 9px;
  border-radius:8px;font-size:18px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--muted);transition:.15s;
  -webkit-tap-highlight-color:transparent;
}
.lang-switcher a:hover{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.1)}
.lang-switcher a.active{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.1);outline:2px solid var(--green)}

.nav-toggle{
  display:none;
  background:none;border:0;
  min-width:44px;min-height:44px;
  font-size:24px;cursor:pointer;
  margin-left:4px;
  color:var(--ink);
  border-radius:9px;
  -webkit-tap-highlight-color:transparent;
  transition:.15s;
}
.nav-toggle:hover{background:#eef2f5}
.nav-toggle.active{background:#eafaf1;color:var(--green)}

/* ===== hero ===== */
.hero{
  position:relative;
  background:var(--grad-hero);color:#fff;
  overflow:hidden;
  padding:64px 0 72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 400px at 80% -10%,rgba(19,181,106,.55),transparent 60%),
             radial-gradient(700px 500px at 10% 120%,rgba(11,111,184,.35),transparent 60%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:38px 38px;
  mask-image:linear-gradient(to bottom,black,transparent);
  opacity:.6;pointer-events:none;
}
.hero-inner{
  position:relative;
  display:flex;align-items:center;gap:44px;
  z-index:1;
}
.hero-text{flex:1;min-width:0;animation:rise .6s ease both}
.hero h1{
  font-size:clamp(28px,4.6vw,46px);
  line-height:1.12;margin:0 0 16px;
  font-weight:850;letter-spacing:-.5px;
}
.hero h1 .accent{background:linear-gradient(90deg,#7df0b4,#bdf3d5);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{
  font-size:clamp(15px,1.9vw,18.5px);
  opacity:.94;max-width:560px;margin:0 0 26px;line-height:1.7;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn-outline{color:#fff;border-color:rgba(255,255,255,.65)}
.hero .btn-outline:hover{background:rgba(255,255,255,.18);color:#fff;border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.2)}
.hero-graphic{flex:0 0 250px;display:flex;justify-content:center;animation:rise .8s ease both}
.cell-stack{display:flex;flex-direction:column;gap:14px;filter:drop-shadow(0 18px 30px rgba(0,0,0,.3))}
.cell{height:60px;border-radius:12px;background:linear-gradient(100deg,#1c4a64,#1f7a4e);box-shadow:inset 0 0 0 2px rgba(255,255,255,.18);position:relative;animation:float 5s ease-in-out infinite}
.cell::after{content:"";position:absolute;left:14px;top:14px;width:22px;height:32px;border-radius:5px;background:linear-gradient(#aef3cf,#5fd99a);opacity:.9}
.cell:nth-child(1){width:200px;animation-delay:0s}
.cell:nth-child(2){width:170px;animation-delay:.6s}
.cell:nth-child(3){width:230px;animation-delay:1.2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* ===== brand strip ===== */
.brand-strip{background:var(--navy);color:#cfe0ea;padding:14px 0}
.brand-inner{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.brand-strip-label{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#7fa6bd;white-space:nowrap}
.brand-chips{display:flex;gap:8px;flex-wrap:wrap}
.brand-chips span{font-weight:700;font-size:14px;color:#e8f1f6;background:rgba(255,255,255,.07);padding:6px 14px;border-radius:20px;border:1px solid rgba(255,255,255,.08)}

/* ===== stats ===== */
.stats{background:linear-gradient(135deg,var(--navy-2),var(--navy));color:#fff;padding:32px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
.stat-num{font-size:clamp(24px,3vw,32px);font-weight:850;color:#3ddc97;line-height:1.1}
.stat-label{font-size:13px;opacity:.85;margin-top:4px}

/* ===== sections ===== */
.section{padding:56px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-title{font-size:clamp(24px,3.2vw,32px);margin:0 0 8px;font-weight:850;position:relative;padding-left:14px}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--grad)}
.section-sub{color:var(--muted);margin:0 0 28px;font-size:15px}

.page-head{padding:42px 0 8px;background:linear-gradient(180deg,#fff,#f5f8fa);border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(26px,3.6vw,36px);margin:0 0 6px}
.page-head p{color:var(--muted);margin:0}

/* ===== product grid ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:20px}
.product-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:.22s;
  display:flex;flex-direction:column;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#cdeede}
.product-thumb{
  height:180px;
  background:linear-gradient(135deg,#eaf6ef,#e4eef5);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.product-thumb::before{content:"";position:absolute;width:120px;height:150px;background:var(--battery) center/contain no-repeat;opacity:.5}
.product-thumb img{position:relative;height:140px;object-fit:contain;transition:.3s;filter:drop-shadow(0 8px 16px rgba(0,0,0,.12))}
.product-card:hover .product-thumb img{transform:scale(1.06)}
.thumb-placeholder{position:relative;width:120px;height:150px;background:var(--battery) center/contain no-repeat;opacity:.5}
.product-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:7px;flex:1}
.product-cat{font-size:12px;color:var(--green);font-weight:800;text-transform:uppercase;letter-spacing:.05em}
.product-name{font-size:16px;margin:0;font-weight:750;line-height:1.3}
.product-summary{font-size:13px;color:var(--muted);margin:0;flex:1}
.product-meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.chip{background:#eafaf1;color:#0b7a44;font-size:12px;font-weight:700;padding:4px 10px;border-radius:20px}
.filter-chips{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 6px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.filter-chips::-webkit-scrollbar{display:none}
.filter-chips .chip{background:#fff;border:1.5px solid var(--line);color:var(--muted);cursor:pointer;transition:.15s;flex:0 0 auto}
.filter-chips .chip:hover{border-color:var(--green)}
.filter-chips .chip.active{background:var(--grad);color:#fff;border-color:transparent}
.results-count{color:var(--muted);font-size:14px;margin:8px 0 0}
.search-bar{display:flex;gap:8px;max-width:540px;margin:12px 0}
.search-bar input{flex:1;min-height:42px;padding:11px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;transition:.15s}
.search-bar input:focus{outline:none;border-color:var(--green)}

/* ===== categories / why / certs ===== */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:16px}
.cat-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 20px;text-align:center;
  box-shadow:var(--shadow);transition:.2s;position:relative;overflow:hidden;
}
.cat-card::after{content:"";position:absolute;inset:auto -30px -30px auto;width:90px;height:90px;border-radius:50%;background:radial-gradient(var(--green),transparent 70%);opacity:.08;transition:.3s}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cdeede}
.cat-card:hover::after{opacity:.16}
.cat-icon{font-size:38px;margin-bottom:8px}
.cat-card h3{margin:0 0 6px;font-size:16px}
.cat-count{color:var(--muted);font-size:14px;font-weight:600}

.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:14px}
.why-item{display:flex;align-items:center;gap:13px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-weight:650;box-shadow:var(--shadow);transition:.18s}
.why-item:hover{transform:translateY(-2px);border-color:#cdeede}
.why-check{flex:0 0 28px;height:28px;width:28px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800}
.cert-row{display:flex;gap:10px;flex-wrap:wrap}
.cert-badge{background:var(--navy);color:#fff;font-weight:800;padding:9px 17px;border-radius:9px;font-size:14px;letter-spacing:.02em;box-shadow:0 6px 16px rgba(12,42,62,.18)}

/* ===== CTA ===== */
.cta{background:linear-gradient(135deg,var(--green-l),var(--blue));color:#fff;padding:54px 0;text-align:center;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% 0,rgba(255,255,255,.18),transparent 60%)}
.cta h2{font-size:clamp(24px,3vw,32px);margin:0 0 10px;position:relative}
.cta p{opacity:.95;margin:0 0 22px;position:relative;font-size:16px}
.cta .btn{position:relative}

/* ===== footer ===== */
.site-footer{background:var(--navy);color:#cfe0ea;padding:46px 0 22px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:30px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:18px;color:#fff;margin-bottom:10px}
.footer-logo{height:34px;width:34px;border-radius:9px}
.footer-tag{opacity:.85;margin:0 0 8px}
.footer-addr{opacity:.7;font-size:14px}
.footer-links{list-style:none;padding:0;margin:10px 0 0}
.footer-links li{margin:7px 0}
.footer-links a{color:#cfe0ea;min-height:32px;display:inline-flex;align-items:center}.footer-links a:hover{color:#3ddc97}
.site-footer h4{color:#fff;margin:0 0 4px;font-size:15px}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:16px;font-size:13px;opacity:.7}

/* ===== product detail ===== */
.back-link{color:var(--green);font-weight:700;display:inline-flex;align-items:center;gap:4px;min-height:36px}
.detail-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:36px;margin-top:18px}
.detail-media{
  background:linear-gradient(135deg,#eaf6ef,#e4eef5);
  border-radius:var(--radius);min-height:340px;
  display:flex;align-items:center;justify-content:center;
  padding:22px;position:relative;overflow:hidden;
  box-shadow:var(--shadow);
}
.detail-media::before{content:"";position:absolute;width:200px;height:250px;background:var(--battery) center/contain no-repeat;opacity:.4}
.detail-media img{position:relative;max-height:380px;max-width:100%;object-fit:contain;filter:drop-shadow(0 12px 24px rgba(0,0,0,.14))}
.detail-placeholder{position:relative;width:200px;height:250px;background:var(--battery) center/contain no-repeat;opacity:.45}
.detail-info h1{font-size:clamp(24px,3vw,30px);margin:6px 0}
.detail-model{color:var(--muted);font-weight:600;font-size:14px}
.detail-desc{font-size:15.5px;line-height:1.75}
.inquiry-buttons{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.specs-block{margin-top:38px}
.specs-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.specs-table th,.specs-table td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:top;word-break:break-word}
.specs-table th{width:34%;background:#f3f8fa;color:var(--muted);font-weight:750}
.specs-table tr:nth-child(even) td{background:#fafcfd}
.specs-table tr:last-child th,.specs-table tr:last-child td{border-bottom:0}
.related-block{margin-top:38px}
.prose{font-size:16px;line-height:1.85}

/* ===== contact ===== */
.contact-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:36px}
.contact-form{display:flex;flex-direction:column;gap:14px}
.contact-form label{font-weight:650;font-size:14px;display:flex;flex-direction:column;gap:6px}
.contact-form input,.contact-form textarea{
  padding:12px 14px;border:1.5px solid var(--line);
  border-radius:10px;font-size:16px;  /* 16 prevents iOS zoom */
  font-family:inherit;width:100%;transition:.15s;
}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(15,157,88,.12)}
.contact-form textarea{min-height:120px;resize:vertical}
.contact-info{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);height:fit-content}
.info-list{list-style:none;padding:0;margin:12px 0 0}
.info-list li{padding:11px 0;border-bottom:1px solid var(--line);word-break:break-word}
.info-list li:last-child{border-bottom:0}

.alert{padding:13px 16px;border-radius:10px;margin-bottom:14px;font-weight:600}
.alert-success{background:#e7f7ee;color:#0b7a44;border:1px solid #bfe9cf}
.alert-error{background:#fdeaea;color:#c32f2f;border:1px solid #f3c4c4}

/* ===== 404 ===== */
.notfound-title{font-size:clamp(28px,4vw,36px);margin-bottom:6px}
.notfound-hero{padding:72px 0}
.notfound-icon{margin-bottom:6px;animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* === About page === */
.about-hero{
  background:var(--grad-hero);color:#fff;padding:60px 0;
  position:relative;overflow:hidden;
}
.about-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 400px at 90% 0%,rgba(19,181,106,.4),transparent 60%),
              radial-gradient(500px 400px at 5% 110%,rgba(11,111,184,.3),transparent 60%);
  pointer-events:none;
}
.about-hero::after{
  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:40px 40px;
  mask-image:linear-gradient(to bottom,black,transparent);
  opacity:.5;pointer-events:none;
}
.about-hero-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:44px;
}
.about-hero-text{flex:1;min-width:0}
.about-hero-text h1{font-size:clamp(26px,4vw,42px);margin:0 0 14px;font-weight:850;letter-spacing:-.4px}
.about-hero-sub{font-size:clamp(15px,1.8vw,17.5px);opacity:.92;max-width:520px;line-height:1.75;margin:0}
.about-hero-graphic{display:none}
.about-visual{display:none}
.about-cell-stack{display:none}
.about-cell{display:none}
.about-globe{display:none}
.about-profile{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:start}
.about-profile-text{flex:1}
.about-profile-facts{display:flex;flex-direction:column;gap:12px}
.fact-card{
  display:flex;align-items:flex-start;gap:13px;
  background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:15px 17px;
  box-shadow:var(--shadow);transition:.18s;
}
.fact-card:hover{transform:translateX(3px);border-color:#cdeede}
.fact-num{font-size:26px;flex:0 0 auto}
.fact-card strong{font-size:14.5px}
.fact-card p{margin:4px 0 0;font-size:13.5px;color:var(--muted)}
.cert-badge-lg{padding:12px 20px;font-size:15px}

@media(max-width:960px){
  .about-hero-inner{flex-direction:column;text-align:center;gap:24px}
  .about-hero-sub{margin:0 auto}
  .about-profile{grid-template-columns:1fr;gap:24px}
  .about-profile-facts{flex-direction:row;flex-wrap:wrap}
  .fact-card{flex:1 1 220px}
}
@media(max-width:480px){
  .about-hero{padding:40px 0 46px}
  .about-hero h1{font-size:26px}

/* === Product Detail === */
.breadcrumb{display:flex;align-items:center;gap:6px;margin-bottom:14px;font-size:13.5px;color:var(--muted);flex-wrap:wrap}
.breadcrumb a{color:var(--green);font-weight:700}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span[aria-current]{color:var(--muted)}
.breadcrumb span{color:var(--line)}

.detail-media{position:relative}
.detail-media-badges{position:absolute;bottom:12px;left:12px}

.detail-model{display:flex;align-items:center;gap:4px;font-size:13.5px;color:var(--muted);margin-bottom:14px}
.detail-model-label{font-weight:750}
.detail-model strong{color:var(--ink)}

.detail-quick-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}
.quick-spec-item{background:#eafaf1;border:1px solid #cdeede;border-radius:10px;padding:10px 12px;text-align:center}
.quick-spec-label{font-size:11px;color:var(--muted);font-weight:750;text-transform:uppercase;letter-spacing:.04em;display:block}
.quick-spec-val{font-size:15px;font-weight:850;color:var(--green-d);margin-top:3px;display:block}

.inquiry-buttons .inquiry-btn{font-size:15px}

.cert-block,.app-block{margin-top:36px}
.app-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(175px,1fr));gap:12px}
.app-item{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:11px;padding:12px 15px;font-weight:650;font-size:14px;transition:.18s}
.app-item:hover{border-color:#cdeede;transform:translateY(-2px);box-shadow:var(--shadow)}
.app-icon{font-size:22px;flex:0 0 auto}

@media(max-width:720px){
  .detail-quick-specs{grid-template-columns:repeat(3,1fr);gap:8px}
}
@media(max-width:480px){
  .detail-quick-specs{grid-template-columns:repeat(3,1fr)}
  .quick-spec-val{font-size:13px}
  .inquiry-buttons .inquiry-btn{font-size:14px}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .cert-block,.app-block{margin-top:28px}
}
  .about-profile-facts{flex-direction:column}
}

/* ============ ADMIN ============ */
.admin-body{background:#eef1f4}
.admin-shell{display:flex;min-height:100vh}
.admin-side{
  width:232px;background:var(--navy);color:#cfe0ea;
  display:flex;flex-direction:column;padding:18px;
  flex:0 0 232px;transition:transform .25s ease;
}
.admin-brand{font-weight:850;color:#fff;font-size:16px;margin-bottom:18px;line-height:1.3}
.admin-nav{display:flex;flex-direction:column;gap:4px}
.admin-nav a{
  color:#cfe0ea;padding:11px 13px;border-radius:9px;
  font-weight:650;min-height:42px;
  display:inline-flex;align-items:center;
}
.admin-nav a:hover,.admin-nav a.active{background:#16415c;color:#fff}
.admin-side-foot{margin-top:auto;display:flex;flex-direction:column;gap:4px;padding-top:14px;border-top:1px solid rgba(255,255,255,.12)}
.admin-side-foot a{color:#9fb6c4;padding:9px 13px;border-radius:9px;font-size:14px;min-height:36px;display:inline-flex;align-items:center}
.admin-side-foot a:hover{color:#fff;background:#16415c}

.admin-main{flex:1;display:flex;flex-direction:column;min-width:0}
.admin-topbar{
  background:#fff;border-bottom:1px solid var(--line);
  padding:14px 22px;font-weight:700;
  display:flex;align-items:center;gap:12px;
}
.admin-topbar-toggle{
  display:none;
  background:none;border:0;
  min-width:42px;min-height:42px;
  font-size:22px;cursor:pointer;color:var(--ink);
  border-radius:9px;
}
.admin-topbar-toggle:hover{background:#eef2f5}
.admin-content{padding:22px;overflow:auto;flex:1}
.admin-h1{font-size:clamp(22px,2.6vw,25px);margin:0 0 18px}
.admin-h2{font-size:clamp(18px,2.2vw,20px);margin:24px 0 10px}
.admin-h3{font-size:16px;margin:20px 0 10px;color:var(--green-d)}
.admin-hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.admin-head-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:12px;flex-wrap:wrap}

.admin-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.span2{grid-column:span 2}.field.span3{grid-column:span 3}
.field label{font-size:13px;font-weight:700;color:var(--muted)}
.field input,.field select,.field textarea{
  padding:10px 12px;border:1.5px solid var(--line);
  border-radius:9px;font-size:14px;
  font-family:inherit;width:100%;transition:.15s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(15,157,88,.12)}
.field textarea{resize:vertical}
.field-inline{flex-direction:row;align-items:center}
.field-inline label{display:flex;align-items:center;gap:8px;color:var(--ink);font-weight:600}
.form-actions{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap}
.img-preview{margin-top:10px;width:170px;height:130px;background:#eef2f5;border:1px dashed var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.img-preview img{width:100%;height:100%;object-fit:contain}

/* table scroll wrapper for mobile */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -2px}
.data-table{min-width:560px}
.data-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14px;box-shadow:var(--shadow)}
.data-table th,.data-table td{padding:11px 13px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;word-break:break-word}
.data-table thead th{background:#f3f8fa;color:var(--muted);font-weight:750;white-space:nowrap}
.data-table tbody tr:hover{background:#fafcfd}
.data-table .unread{background:#eafaf1}
.data-table .msg-cell{max-width:340px}
.row-actions{display:flex;gap:6px;white-space:nowrap;flex-wrap:wrap}

.stat-cards{display:flex;gap:14px;margin-bottom:22px;flex-wrap:wrap}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow);min-width:160px;flex:1}
.stat-card-num{font-size:30px;font-weight:850;color:var(--green);line-height:1.1}
.stat-card-label{color:var(--muted);font-size:13px;margin-top:4px}
.empty{color:var(--muted);padding:20px;text-align:center}

.admin-scrim{
  display:none;position:fixed;inset:0;
  background:rgba(8,18,28,.5);z-index:40;
}
.admin-scrim.open{display:block}

/* ===== login ===== */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0c2a3e,#0f9d58);padding:20px}
.login-box{background:#fff;border-radius:18px;padding:36px 32px;width:100%;max-width:360px;box-shadow:0 24px 70px rgba(0,0,0,.3)}
.login-brand{font-weight:850;text-align:center;margin-bottom:4px;display:flex;align-items:center;justify-content:center;gap:10px}
.login-brand img{height:32px;width:32px}
.login-box h2{text-align:center;margin:0 0 18px;font-size:19px}
.login-box label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:14px}
.login-box input{padding:12px 13px;border:1.5px solid var(--line);border-radius:9px;font-size:16px;transition:.15s}
.login-box input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(15,157,88,.12)}
.login-box .btn{width:100%}
.login-back{display:block;text-align:center;margin-top:14px;color:var(--muted);font-size:14px}

/* ============ RESPONSIVE ============ */

/* ≤1200: bigger screens down a bit */
@media (max-width:1200px){
  .hero-inner{gap:28px}
  .hero-graphic{flex:0 0 200px}
}

/* ≤960: tablet — multi-column collapse, hero graphic shrinks */
@media (max-width:960px){
  .hero{padding:54px 0 60px}
  .hero-inner{flex-direction:column;text-align:center;gap:28px}
  .hero-graphic{flex:0 0 auto;order:-1;transform:scale(.85);transform-origin:center top}
  .hero-text{flex:1 1 auto;width:100%}
  .hero h1{font-size:34px}
  .hero-sub{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}

  .detail-grid{grid-template-columns:1fr;gap:24px}
  .detail-media{min-height:280px}

  .contact-grid{grid-template-columns:1fr;gap:24px}

  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}

  .form-grid{grid-template-columns:1fr 1fr}
  .field.span3{grid-column:span 2}

  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:46px 0}
  .section-title{font-size:26px}
}

/* ≤720: small tablet / large phone — burger menu, single-col grids, admin drawer */
@media (max-width:720px){
  .header-inner{height:60px;gap:10px}
  .brand-logo{height:32px;width:32px}
  .brand-name{font-size:15px;max-width:42vw}

  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{
    display:none;
    position:absolute;
    top:60px;left:0;right:0;
    background:#fff;
    flex-direction:column;
    padding:8px 16px 14px;
    border-bottom:1px solid var(--line);
    box-shadow:0 14px 28px rgba(0,0,0,.08);
    margin:0;
    gap:0;
  }
  .main-nav.open{display:flex}
  .main-nav a{
    width:100%;padding:13px 14px;
    border-radius:8px;font-size:15px;
    border-bottom:1px solid var(--line);
  }
  .main-nav a:last-child{border-bottom:0}

  .header-right{gap:6px}
  .header-right .btn{display:none} /* hide dashboard/logout text in header on mobile (use side nav) */

  .hero{padding:46px 0 52px}
  .hero h1{font-size:30px}
  .hero-graphic{transform:scale(.7)}
  .hero-actions .btn-lg{padding:13px 22px;font-size:15px;min-height:46px}

  .card-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
  .product-thumb{height:160px}
  .product-thumb img{height:120px}

  .footer-grid{grid-template-columns:1fr;gap:22px}
  .footer-bottom{font-size:12px}

  .page-head{padding:32px 0 6px}

  .specs-table th,.specs-table td{padding:11px 12px;font-size:14px}

  /* admin drawer */
  .admin-side{
    position:fixed;left:0;top:0;bottom:0;
    z-index:60;
    transform:translateX(-100%);
    box-shadow:8px 0 30px rgba(0,0,0,.3);
  }
  .admin-side.open{transform:translateX(0)}
  .admin-topbar-toggle{display:inline-flex;align-items:center;justify-content:center}
  .admin-content{padding:18px 16px}
  .admin-form{padding:18px}
  .admin-h1{font-size:20px;margin-bottom:14px}

  .form-grid{grid-template-columns:1fr}
  .field.span2,.field.span3{grid-column:span 1}

  .stat-cards{gap:10px}
  .stat-card{padding:16px 18px;min-width:0}

  .login-box{padding:28px 22px}
}

/* ≤480: phone — tighten everything */
@media (max-width:480px){
  :root{--container-pad:14px}
  body{font-size:15px}
  .container{padding:0 14px}

  .header-inner{height:56px;gap:8px}
  .brand{gap:8px}
  .brand-logo{height:30px;width:30px}
  .brand-name{font-size:14px;max-width:46vw}
  .lang-switcher a{min-width:32px;min-height:32px;font-size:16px;padding:4px 7px}
  .nav-toggle{min-width:42px;min-height:42px;font-size:22px}
  .main-nav{top:56px}

  .hero{padding:36px 0 44px}
  .hero h1{font-size:26px;letter-spacing:-.3px}
  .hero-sub{font-size:14.5px;line-height:1.65}
  .hero-actions{gap:10px}
  .hero-actions .btn-lg{padding:12px 18px;font-size:14.5px;min-height:44px;flex:1;max-width:100%}
  .hero-graphic{display:none}

  .section{padding:36px 0}
  .section-title{font-size:22px}
  .section-sub{font-size:14px;margin-bottom:20px}

  .brand-strip{padding:12px 0}
  .brand-strip-label{font-size:11px;width:100%}
  .brand-chips span{font-size:12.5px;padding:5px 11px}

  .stats{padding:24px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-num{font-size:22px}
  .stat-label{font-size:11.5px}

  .card-grid{grid-template-columns:1fr;gap:14px}
  .product-thumb{height:170px}
  .product-thumb img{height:140px}

  .cat-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .cat-card{padding:20px 14px}
  .cat-icon{font-size:32px}
  .cat-card h3{font-size:14.5px}
  .cat-count{font-size:12px}

  .why-grid{grid-template-columns:1fr;gap:10px}
  .why-item{padding:14px;font-size:14px}
  .cert-badge{padding:8px 14px;font-size:13px}

  .cta{padding:38px 0}
  .cta p{font-size:14px}
  .cta .btn-lg{padding:12px 20px;font-size:14.5px;min-height:46px}

  .footer-grid{grid-template-columns:1fr;gap:20px;text-align:center}
  .footer-brand{justify-content:center}
  .footer-bottom{flex-direction:column;text-align:center;gap:6px}

  .filter-chips{gap:6px;margin:12px -14px 4px;padding:0 14px}
  .filter-chips .chip{padding:5px 11px;font-size:12.5px}

  .page-head{padding:26px 0 4px}
  .page-head h1{font-size:22px}
  .search-bar input{font-size:16px;min-height:44px}

  .detail-media{min-height:240px;padding:18px}
  .detail-info h1{font-size:22px}
  .detail-model{font-size:13px}
  .inquiry-buttons{flex-direction:column;gap:10px}
  .inquiry-buttons .btn{width:100%}

  /* specs table → card layout on phone */
  .specs-table,.specs-table thead,.specs-table tbody,.specs-table tr,.specs-table th,.specs-table td{display:block;width:100%}
  .specs-table{border:0;background:transparent;box-shadow:none;overflow:visible}
  .specs-table thead{display:none}
  .specs-table tr{
    background:#fff;
    border:1px solid var(--line);
    border-radius:12px;
    padding:0;
    margin-bottom:10px;
    box-shadow:var(--shadow);
  }
  .specs-table td,.specs-table th{
    border-bottom:1px solid var(--line);
    padding:10px 14px;
    width:auto;
  }
  .specs-table tr td:last-child,.specs-table tr th:last-child{border-bottom:0}
  .specs-table th{
    background:#f3f8fa;
    color:var(--green-d);
    font-weight:800;
    text-transform:uppercase;
    font-size:11.5px;
    letter-spacing:.05em;
  }
  .specs-table tr td{font-size:14px;background:#fff}

  .contact-form input,.contact-form textarea{font-size:16px}
  .contact-info{padding:20px}
  .info-list li{padding:10px 0;font-size:14px}

  .alert{padding:12px 14px;font-size:14px}

  .notfound-title{font-size:28px}

  .admin-topbar{padding:12px 16px}
  .admin-content{padding:14px 12px}
  .admin-form{padding:16px;border-radius:12px}
  .admin-h1{font-size:19px}
  .admin-h2{font-size:17px;margin:20px 0 8px}
  .admin-head-row{gap:8px}
  .form-actions{flex-direction:column}
  .form-actions .btn{width:100%}

  .stat-cards{flex-direction:column;gap:10px}
  .stat-card{padding:14px 16px;text-align:left;display:flex;align-items:center;gap:14px}
  .stat-card-num{font-size:24px}
  .stat-card-label{margin:0;font-size:13px}

  .row-actions{width:100%}
  .row-actions .btn{flex:1;font-size:12px;padding:6px 10px}
}

/* very small screens (≤360) */
@media (max-width:360px){
  .brand-name{display:none}
  .brand-name-shown{display:none}
  .card-grid{grid-template-columns:1fr}
}