/* ============================================================
   SinoPipe Industrial — Global Stylesheet
   Modern industrial theme: ink navy + amber accent
   ============================================================ */
:root{
  --ink:#0d1b2e;
  --ink-2:#13253d;
  --ink-3:#1b3352;
  --amber:#f5a623;
  --amber-d:#e08900;
  --amber-l:#ffd98a;
  --paper:#f6f7f9;
  --white:#ffffff;
  --line:#e3e8ef;
  --text:#22303f;
  --muted:#5c6b7c;
  --radius:10px;
  --shadow:0 10px 30px rgba(13,27,46,.10);
  --shadow-lg:0 24px 60px rgba(13,27,46,.18);
  --font:'Segoe UI','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--white);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 30px;border-radius:6px;font-weight:700;font-size:15px;letter-spacing:.4px;cursor:pointer;border:none;transition:.25s;text-transform:uppercase}
.btn-amber{background:var(--amber);color:var(--ink)}
.btn-amber:hover{background:var(--amber-d);transform:translateY(-2px);box-shadow:0 10px 24px rgba(245,166,35,.45)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.55)}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--ink-3);transform:translateY(-2px)}
.btn-line{background:transparent;color:var(--ink);border:2px solid var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.btn-wa{background:#25d366;color:#fff}
.btn-wa:hover{background:#1ebe5b;transform:translateY(-2px);box-shadow:0 10px 24px rgba(37,211,102,.4)}

/* ---------- Section scaffolding ---------- */
.sec{padding:88px 0}
.sec-dark{background:var(--ink);color:#e8edf4}
.sec-tint{background:var(--paper)}
.sec-head{max-width:760px;margin:0 auto 54px;text-align:center}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:800;letter-spacing:3px;text-transform:uppercase;color:var(--amber-d);margin-bottom:14px}
.kicker::before,.kicker::after{content:"";width:26px;height:2px;background:var(--amber)}
.sec-dark .kicker{color:var(--amber)}
.sec-title{font-size:36px;line-height:1.25;font-weight:800;color:var(--ink)}
.sec-dark .sec-title{color:#fff}
.sec-sub{margin-top:16px;color:var(--muted);font-size:16.5px}
.sec-dark .sec-sub{color:#a9b8cc}

/* ---------- Language switch ---------- */
.lang-switch{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:100px;padding:3px 12px;font-family:var(--font);font-size:12.5px;font-weight:700;color:#8fa0b5;cursor:pointer;line-height:1.4}
.lang-switch:hover{border-color:var(--amber)}
.lang-switch .ls-opt{padding:2px 4px;border-radius:8px;transition:.2s;letter-spacing:.5px}
.lang-switch .ls-opt.on{background:var(--amber);color:var(--ink)}
.lang-switch .ls-sep{opacity:.5}
/* language switch inside the white sticky header */
.site-header .lang-switch.lang-nav{background:#f2f4f7;border:1px solid var(--line);color:var(--muted);margin-left:6px;flex-shrink:0}
.site-header .lang-switch.lang-nav .ls-opt.on{background:var(--amber);color:var(--ink)}
.site-header .lang-switch.lang-nav:hover{border-color:var(--amber);color:var(--amber-d)}
/* language row inside mobile menu */
.mobile-nav .m-lang{display:flex;justify-content:space-between;align-items:center;padding:12px 24px}
.mobile-nav .m-lang .m-lang-label{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:1px;text-transform:uppercase}

/* ---------- Top bar ---------- */
.topbar{background:var(--ink);color:#c3cfdd;font-size:13.5px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;padding-top:8px;padding-bottom:8px}
.topbar a{transition:.2s}
.topbar a:hover{color:var(--amber)}
.topbar .tb-group{display:flex;gap:22px;align-items:center}
.topbar .tb-item{display:inline-flex;gap:7px;align-items:center}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:48px;width:auto}
.brand .brand-name{font-size:22px;font-weight:900;color:var(--ink);letter-spacing:.5px;line-height:1.1}
.brand .brand-name small{display:block;font-size:10.5px;font-weight:700;letter-spacing:3.2px;color:var(--amber-d);text-transform:uppercase}
.nav{display:flex;align-items:center;gap:6px}
.nav>li{position:relative}
.nav>li>a{display:flex;align-items:center;gap:6px;padding:12px 16px;font-weight:700;font-size:15px;color:var(--ink);border-radius:6px;transition:.2s}
.nav>li>a:hover,.nav>li.active>a{color:var(--amber-d)}
.nav>li>a .caret{font-size:10px;transition:.2s}
.nav>li:hover .caret{transform:rotate(180deg)}
.nav .cta{margin-left:10px;background:var(--amber);color:var(--ink);padding:12px 22px !important;border-radius:6px}
.nav .cta:hover{background:var(--amber-d);color:var(--ink)}

/* Mega dropdown */
.dropdown{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(8px);background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:26px 30px;display:flex;gap:34px;flex-wrap:wrap;opacity:0;visibility:hidden;transition:.25s;min-width:640px;max-width:92vw}
.nav>li:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dd-col h4{font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--amber-d);border-bottom:2px solid var(--line);padding-bottom:10px;margin-bottom:12px;font-weight:800}
.dd-col li a{display:block;padding:7px 10px;font-size:14.5px;color:var(--text);border-radius:6px;transition:.18s;white-space:nowrap}
.dd-col li a:hover{background:var(--paper);color:var(--amber-d);padding-left:14px}

/* Mobile nav */
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.burger span{width:26px;height:3px;background:var(--ink);border-radius:2px;transition:.25s}
.burger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.mobile-nav{display:none;background:#fff;border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:max-height .35s ease}
.mobile-nav.open{max-height:75vh;overflow-y:auto}
.mobile-nav .m-group{border-top:1px solid var(--line)}
.mobile-nav .m-group>a{display:flex;justify-content:space-between;align-items:center;padding:15px 24px;font-weight:700;color:var(--ink)}
.mobile-nav .m-sub{display:none;background:var(--paper);padding:10px 0}
.mobile-nav .m-sub.show{display:block}
.mobile-nav .m-sub a{display:block;padding:8px 40px;font-size:14.5px;color:var(--muted)}
.mobile-nav .m-sub a:hover{color:var(--amber-d)}
.mobile-nav .m-cta{margin:16px 24px}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(115deg,var(--ink) 0%,var(--ink-2) 55%,var(--ink-3) 100%);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px}
.hero::after{content:"";position:absolute;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(245,166,35,.16),transparent 65%);right:-140px;top:-160px}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;padding-top:96px;padding-bottom:96px}
.hero-badge{display:inline-flex;align-items:center;gap:9px;background:rgba(245,166,35,.14);border:1px solid rgba(245,166,35,.5);color:var(--amber-l);font-size:13px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;padding:8px 18px;border-radius:100px;margin-bottom:24px}
.hero h1{font-size:46px;line-height:1.16;font-weight:900;letter-spacing:-.5px}
.hero h1 em{color:var(--amber);font-style:normal}
.hero p{margin-top:20px;color:#b9c6d8;font-size:17.5px;max-width:520px}
.hero-actions{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:0;margin-top:44px;border-top:1px solid rgba(255,255,255,.14);padding-top:26px}
.hero-stats .hs{padding-right:34px;margin-right:34px;border-right:1px solid rgba(255,255,255,.14)}
.hero-stats .hs:last-child{border:none;margin:0;padding:0}
.hero-stats b{font-size:30px;color:var(--amber);font-weight:900;display:block;line-height:1.1}
.hero-stats span{font-size:12.5px;letter-spacing:1.4px;text-transform:uppercase;color:#93a5bb}

/* Hero form card */
.quote-card{background:#fff;border-radius:14px;padding:34px 32px;box-shadow:var(--shadow-lg);color:var(--text)}
.quote-card h3{font-size:21px;font-weight:800;color:var(--ink)}
.quote-card .qc-sub{font-size:13.5px;color:var(--muted);margin:6px 0 20px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:7px;font-size:15px;font-family:var(--font);transition:.2s;background:#fbfcfe}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(245,166,35,.18)}
.field textarea{min-height:88px;resize:vertical}
.field .req{color:#d64545}
/* field-level inline validation (blur check, red border + hint) */
.field-err{display:none;color:#d64545;font-size:12.5px;font-weight:600;margin-top:5px;line-height:1.45}
.field input.err,.field textarea.err,.field select.err,.phone-field.err{border-color:#d64545;background:#fff8f8}
.field input.err:focus,.field textarea.err:focus,.field select.err:focus{border-color:#d64545;box-shadow:0 0 0 3px rgba(214,69,69,.12)}
.form-msg{display:none;margin-top:12px;padding:11px 14px;border-radius:7px;font-size:14px;font-weight:600}
.form-msg.err{display:block;background:#fdecec;color:#b23131;border:1px solid #f5c6c6}
.form-msg.ok{display:block;background:#e9f8ef;color:#1e7a3c;border:1px solid #bce5c9}
.w-full{width:100%;justify-content:center}

/* ---------- Phone / country selector ---------- */
.phone-field{position:relative;display:flex;align-items:stretch;border:1.5px solid var(--line);border-radius:7px;background:#fbfcfe;overflow:visible;transition:.2s}
.phone-field:focus-within{border-color:var(--amber);box-shadow:0 0 0 3px rgba(245,166,35,.18)}
.country-select{flex-shrink:0;display:flex;align-items:center;gap:6px;padding:0 10px 0 12px;background:transparent;border:none;border-right:1px solid var(--line);cursor:pointer;font-size:14px;color:var(--text);font-family:var(--font);line-height:1}
.country-select .cfi{width:20px;height:14px;object-fit:cover;border-radius:2px;display:inline-block}
.country-select .cfe{font-size:16px;line-height:1}
.country-select .cd{font-weight:700;min-width:32px;text-align:left}
.country-select .ca{font-size:11px;color:var(--muted);margin-left:2px}
.country-select:hover{background:rgba(245,166,35,.08)}
.country-dropdown{display:none;position:absolute;top:calc(100% + 6px);left:0;z-index:20;min-width:280px;max-height:260px;overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-lg)}
.country-dropdown.open{display:block}
.country-option{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;transition:.15s;font-size:14px}
.country-option:hover{background:var(--paper)}
.country-option .cfi{width:20px;height:14px;object-fit:cover;border-radius:2px;display:inline-block}
.country-option .cfe{font-size:16px;line-height:1}
.country-option .cn{flex:1;color:var(--text)}
.country-option .cd{color:var(--muted);font-weight:600}
.phone-field input[type=tel]{flex:1;border:none;background:transparent;padding:12px 14px;font-size:15px;font-family:var(--font);outline:none;min-width:0}

/* ---------- Application cards ---------- */
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.app-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.28s;display:flex;flex-direction:column}
.app-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--amber)}
.app-card .app-img{height:210px;overflow:hidden;background:var(--paper);position:relative}
.app-card .app-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.app-card:hover .app-img img{transform:scale(1.06)}
.app-card .app-num{position:absolute;top:14px;left:14px;background:var(--ink);color:var(--amber);font-weight:900;font-size:13px;padding:5px 12px;border-radius:5px;letter-spacing:1px}
.app-card .app-body{padding:24px 24px 26px;flex:1;display:flex;flex-direction:column}
.app-card h3{font-size:19px;font-weight:800;color:var(--ink);margin-bottom:10px}
.app-card p{font-size:14.5px;color:var(--muted);flex:1}
.learn{margin-top:18px;font-weight:800;font-size:14px;color:var(--amber-d);display:inline-flex;align-items:center;gap:7px;text-transform:uppercase;letter-spacing:.6px}
.learn:hover{gap:12px}
.app-card.feature{grid-column:span 1}

/* ---------- About band ---------- */
.about-band .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-media{position:relative}
.about-media .main-img{border-radius:14px;box-shadow:var(--shadow-lg);width:100%;object-fit:cover;height:420px}
.about-media .float-img{position:absolute;right:-26px;bottom:-34px;width:230px;border-radius:12px;border:6px solid #fff;box-shadow:var(--shadow-lg)}
.about-media .exp-badge{position:absolute;left:-20px;top:-20px;background:var(--amber);color:var(--ink);border-radius:12px;padding:16px 20px;text-align:center;box-shadow:var(--shadow)}
.about-media .exp-badge b{display:block;font-size:30px;font-weight:900;line-height:1}
.about-media .exp-badge span{font-size:11.5px;font-weight:800;letter-spacing:1px;text-transform:uppercase}
.about-body p{color:var(--muted);margin-bottom:16px;font-size:15.5px}
.about-nums{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:28px 0 30px}
.about-nums .an{background:var(--paper);border-left:3px solid var(--amber);border-radius:8px;padding:16px 12px;text-align:center}
.about-nums .an b{display:block;font-size:24px;font-weight:900;color:var(--ink)}
.about-nums .an span{font-size:12px;color:var(--muted);letter-spacing:.4px}

/* ---------- Cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.case-card{background:var(--ink-2);border:1px solid rgba(255,255,255,.09);border-radius:12px;padding:28px;position:relative;overflow:hidden;transition:.28s}
.case-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--amber),transparent)}
.case-card:hover{transform:translateY(-6px);border-color:rgba(245,166,35,.5)}
.case-num{font-size:15px;font-weight:900;color:var(--amber);letter-spacing:2px}
.case-card h3{font-size:18.5px;font-weight:800;color:#fff;margin:10px 0 18px;line-height:1.35}
.case-row{display:flex;gap:12px;padding:9px 0;border-top:1px dashed rgba(255,255,255,.13);font-size:13.5px}
.case-row b{color:var(--amber-l);min-width:118px;font-weight:700}
.case-row span{color:#aebbc9}

/* ---------- Catalog strip ---------- */
.catalog-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:22px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center;transition:.25s}
.cat-card:hover{border-color:var(--amber);transform:translateY(-5px);box-shadow:var(--shadow)}
.cat-card .cat-img{height:120px;display:flex;align-items:center;justify-content:center;background:var(--paper);border-radius:9px;margin-bottom:14px;overflow:hidden}
.cat-card .cat-img img{max-height:100%;max-width:100%;object-fit:contain}
.cat-card h4{font-size:14.5px;font-weight:700;color:var(--ink);line-height:1.4}

/* ---------- Explore split ---------- */
.explore-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.explore-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:.28s}
.explore-card:hover{box-shadow:var(--shadow-lg);border-color:var(--amber)}
.explore-card .ex-img{height:240px;overflow:hidden;background:var(--paper)}
.explore-card .ex-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.explore-card:hover .ex-img img{transform:scale(1.05)}
.explore-card .ex-body{padding:28px;flex:1;display:flex;flex-direction:column}
.explore-card h3{font-size:22px;font-weight:800;color:var(--ink)}
.explore-card .ex-tag{display:inline-block;background:rgba(245,166,35,.15);color:var(--amber-d);font-size:12px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;padding:5px 12px;border-radius:100px;margin:10px 0 14px;align-self:flex-start}
.explore-card p{color:var(--muted);font-size:14.8px;flex:1}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.pager{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:40px;flex-wrap:wrap}
.pg-btn{min-width:40px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;transition:.2s}
.pg-btn:hover:not(:disabled){border-color:var(--amber);color:var(--amber)}
.pg-btn.on{background:var(--amber);border-color:var(--amber);color:#fff;cursor:default}
.pg-btn:disabled{opacity:.35;cursor:not-allowed}
.pg-ellipsis{min-width:28px;height:40px;display:inline-flex;align-items:center;justify-content:center;color:var(--muted);font-size:15px;font-weight:600}
.news-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:.28s}
.news-card:hover{box-shadow:var(--shadow-lg);border-color:var(--amber);transform:translateY(-5px)}
.news-card .n-img{height:230px;overflow:hidden;background:var(--paper)}
.news-card .n-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.news-card:hover .n-img img{transform:scale(1.05)}
.news-card .n-body{padding:26px;flex:1;display:flex;flex-direction:column}
.news-card .n-date{font-size:12.5px;font-weight:700;color:var(--amber-d);letter-spacing:1.4px;text-transform:uppercase}
.news-card h3{font-size:20px;font-weight:800;color:var(--ink);margin:10px 0 12px;line-height:1.35}
.news-card p{color:var(--muted);font-size:14.5px;flex:1}

/* ---------- Contact band ---------- */
.contact-band .container{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.contact-info h3{font-size:30px;font-weight:800;color:#fff;line-height:1.3}
.contact-info p{color:#a9b8cc;margin:18px 0 30px;font-size:15.5px}
.c-line{display:flex;align-items:center;gap:16px;padding:16px 0;border-top:1px solid rgba(255,255,255,.12)}
.c-ico{width:46px;height:46px;border-radius:10px;background:rgba(245,166,35,.15);border:1px solid rgba(245,166,35,.4);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.c-line b{display:block;color:var(--amber-l);font-size:12px;letter-spacing:1.6px;text-transform:uppercase;font-weight:700}
.c-line a,.c-line span{color:#fff;font-size:17px;font-weight:600}
.c-line a:hover{color:var(--amber)}

/* ---------- Footer ---------- */
.site-footer{background:#091425;color:#8fa0b5;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;padding:64px 0 50px}
.site-footer h4{color:#fff;font-size:15px;letter-spacing:1.6px;text-transform:uppercase;margin-bottom:20px;font-weight:800}
.site-footer h4::after{content:"";display:block;width:30px;height:2px;background:var(--amber);margin-top:9px}
.site-footer li{margin-bottom:10px}
.site-footer a:hover{color:var(--amber)}
.f-brand img{height:52px;margin-bottom:16px}
.f-brand p{line-height:1.75;max-width:300px}
.f-contact li{display:flex;gap:10px;align-items:flex-start}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;display:flex;justify-content:space-between;align-items:center;font-size:13.5px;flex-wrap:wrap;gap:10px}
.footer-bottom a:hover{color:var(--amber)}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{background:linear-gradient(115deg,var(--ink) 0%,var(--ink-3) 100%);color:#fff;padding:70px 0;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{font-size:13.5px;color:#93a5bb;letter-spacing:.6px;margin-bottom:14px}
.breadcrumb a:hover{color:var(--amber)}
.page-hero h1{font-size:40px;font-weight:900;line-height:1.2}
.page-hero p{color:#a9b8cc;margin-top:14px;max-width:640px;font-size:16px}

/* ---------- Product page ---------- */
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:44px}
.filter-btn{padding:11px 24px;border-radius:100px;border:1.5px solid var(--line);background:#fff;font-weight:700;font-size:14.5px;color:var(--muted);cursor:pointer;transition:.22s;font-family:var(--font)}
.filter-btn:hover{border-color:var(--amber);color:var(--amber-d)}
.filter-btn.active{background:var(--ink);border-color:var(--ink);color:#fff}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.26s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--amber)}
.prod-card .p-img{height:180px;background:var(--paper);display:flex;align-items:center;justify-content:center;overflow:hidden;padding:14px}
.prod-card .p-img img{max-width:100%;max-height:100%;object-fit:contain;transition:.4s}
.prod-card:hover .p-img img{transform:scale(1.07)}
.prod-card .p-body{padding:18px;text-align:center;flex:1;display:flex;flex-direction:column;justify-content:flex-end}
.prod-card .p-cat{font-size:11px;font-weight:800;letter-spacing:1.4px;color:var(--amber-d);text-transform:uppercase}
.prod-card h4{font-size:15px;font-weight:700;color:var(--ink);margin-top:6px;line-height:1.4}

/* product detail */
.pd-wrap{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
.pd-gallery{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column;gap:16px;min-height:380px}
.pg-main{flex:1;display:flex;align-items:center;justify-content:center;min-height:300px}
.pg-main img{max-height:340px;max-width:100%;object-fit:contain}
.pg-thumbs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.pg-thumb{width:72px;height:72px;padding:0;border:2px solid transparent;border-radius:8px;background:#fff;cursor:pointer;overflow:hidden;transition:.2s}
.pg-thumb img{width:100%;height:100%;object-fit:cover}
.pg-thumb:hover{transform:translateY(-2px)}
.pg-thumb.on{border-color:var(--amber);box-shadow:0 6px 16px rgba(245,166,35,.25)}
.art-gallery{margin:0 0 32px}
.ag-main{border-radius:14px;overflow:hidden;margin-bottom:14px;box-shadow:var(--shadow);background:var(--paper)}
.ag-main img{width:100%;max-height:420px;object-fit:cover;display:block}
.ag-thumbs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.ag-thumb{width:80px;height:60px;padding:0;border:2px solid transparent;border-radius:8px;background:#fff;cursor:pointer;overflow:hidden;transition:.2s}
.ag-thumb img{width:100%;height:100%;object-fit:cover}
.ag-thumb:hover{transform:translateY(-2px)}
.ag-thumb.on{border-color:var(--amber);box-shadow:0 6px 16px rgba(245,166,35,.25)}
.pd-info .pd-cat{font-size:13px;font-weight:800;letter-spacing:2px;color:var(--amber-d);text-transform:uppercase}
.pd-info h1{font-size:32px;font-weight:900;color:var(--ink);margin:10px 0 16px;line-height:1.25}
.pd-info>p{color:var(--muted);font-size:15.5px}
.spec-table{width:100%;border-collapse:collapse;margin:26px 0;border:1px solid var(--line);border-radius:10px;overflow:hidden;font-size:14.5px}
.spec-table th{background:var(--ink);color:#fff;text-align:left;padding:12px 16px;font-weight:700;width:200px}
.spec-table td{padding:12px 16px;border-top:1px solid var(--line);background:#fff;color:var(--text)}
.pd-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}

/* ---------- About page ---------- */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.value-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:32px 26px;text-align:center;transition:.25s}
.value-card:hover{border-color:var(--amber);box-shadow:var(--shadow);transform:translateY(-5px)}
.value-card .v-ico{width:64px;height:64px;margin:0 auto 18px;border-radius:14px;background:linear-gradient(135deg,var(--amber),var(--amber-l));display:flex;align-items:center;justify-content:center;font-size:28px}
.value-card h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:10px}
.value-card p{font-size:14.5px;color:var(--muted)}

/* ---------- Chat widget ---------- */
.chat-fab{position:fixed;right:26px;bottom:26px;z-index:950;height:58px;border-radius:30px;background:var(--amber);border:none;box-shadow:0 12px 30px rgba(245,166,35,.5);cursor:pointer;display:flex;align-items:center;gap:8px;padding:0 18px 0 14px;transition:.25s;color:var(--ink)}
.wa-fab{position:fixed;left:26px;bottom:26px;z-index:949;height:58px;border-radius:30px;background:#25d366;border:none;box-shadow:0 10px 26px rgba(37,211,102,.45);cursor:pointer;display:flex;align-items:center;gap:8px;padding:0 18px 0 14px;transition:.25s;text-decoration:none;color:#fff;font-weight:800}
.wa-fab:hover{transform:scale(1.05)}
.wa-fab svg{width:28px;height:28px;fill:#fff;flex-shrink:0}
.wa-fab .wa-fab-label{font-size:13px;white-space:nowrap}
@media (max-width:760px){
  .wa-fab{left:18px;bottom:18px;height:46px;padding:0 12px 0 10px}
  .wa-fab svg{width:24px;height:24px}
  .wa-fab .wa-fab-label{font-size:12px}
}
.chat-fab .chat-icon{font-size:24px;line-height:1}
.chat-fab .chat-fab-label{font-size:13px;font-weight:800;white-space:nowrap}
.chat-fab:hover{transform:scale(1.05)}
.chat-fab.has-unread::after{content:"";position:absolute;top:4px;right:4px;width:14px;height:14px;border-radius:50%;background:#e53e3e;border:2px solid #fff;animation:pulse-dot 1.6s infinite}
@keyframes pulse-dot{0%,100%{transform:scale(1)}50%{transform:scale(1.25)}}
.chat-panel{position:fixed;right:26px;bottom:98px;z-index:950;width:330px;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);border:1px solid var(--line);overflow:hidden;display:none;flex-direction:column}
.chat-panel.open{display:flex;animation:chat-pop .32s cubic-bezier(.2,.9,.3,1.15)}
@keyframes chat-pop{from{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.chat-head{background:var(--ink);color:#fff;padding:16px 18px;display:flex;gap:12px;align-items:center}
.chat-head .avatar{width:38px;height:38px;border-radius:50%;background:var(--amber);display:flex;align-items:center;justify-content:center;font-size:18px}
.chat-head b{font-size:15px}
.chat-head small{display:block;font-size:12px;color:#8fe3a1;font-weight:600}
.chat-head .chat-mute{margin-left:auto;background:none;border:none;color:#fff;font-size:18px;cursor:pointer;padding:6px;opacity:.85;line-height:1}
.chat-head .chat-mute:hover{opacity:1}
.chat-head .chat-close{background:none;border:none;color:#fff;font-size:15px;cursor:pointer;padding:6px 4px 6px 8px;opacity:.85;line-height:1;margin-left:2px}
.chat-head .chat-close:hover{opacity:1}
.chat-body{padding:18px;flex:1;background:var(--paper);min-height:220px;max-height:300px;overflow-y:auto}
.chat-msg{max-width:82%;padding:10px 14px;border-radius:12px;font-size:14px;margin-bottom:10px;line-height:1.55}
.chat-msg.bot{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.chat-msg.user{background:var(--ink);color:#fff;margin-left:auto;border-bottom-right-radius:4px}
.chat-input{display:flex;border-top:1px solid var(--line)}
.chat-input input{flex:1;border:none;padding:14px 16px;font-size:14px;font-family:var(--font);outline:none}
.chat-input button{background:var(--amber);border:none;padding:0 18px;font-size:18px;cursor:pointer;color:var(--ink)}

/* Back to top */
.to-top{position:fixed;right:32px;bottom:100px;z-index:940;width:44px;height:44px;border-radius:10px;background:var(--ink);color:#fff;border:none;font-size:18px;cursor:pointer;opacity:0;visibility:hidden;transition:.25s;box-shadow:var(--shadow)}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--amber);color:var(--ink)}

/* ---------- Mobile: collapsed floating FAB menu ---------- */
.mfab{position:fixed;right:16px;bottom:16px;z-index:960;display:none;flex-direction:column;align-items:flex-end;gap:12px}
.mfab-main{width:56px;height:56px;border-radius:50%;background:var(--amber);border:none;color:var(--ink);font-size:24px;cursor:pointer;box-shadow:0 12px 30px rgba(245,166,35,.5);display:flex;align-items:center;justify-content:center;transition:.25s;position:relative;flex-shrink:0}
.mfab-main:hover{transform:scale(1.06)}
.mfab-main .mfab-ico{transition:.28s;font-style:normal}
.mfab.open .mfab-main .mfab-ico{transform:rotate(45deg)}
.mfab-main .mfab-dot{position:absolute;top:3px;right:3px;width:13px;height:13px;border-radius:50%;background:#e53e3e;border:2px solid #fff;display:none;animation:pulse-dot 1.6s infinite}
.mfab-main.has-unread .mfab-dot{display:block}
.mfab-menu{display:flex;flex-direction:column;align-items:flex-end;gap:10px;visibility:hidden;opacity:0;transform:translateY(10px);transition:.22s}
.mfab.open .mfab-menu{visibility:visible;opacity:1;transform:translateY(0)}
.mfab-item{display:flex;align-items:center;gap:9px;background:none;border:none;padding:0;cursor:pointer;text-decoration:none;font-family:inherit}
.mfab-item .mf-label{background:var(--ink);color:#fff;font-size:12px;font-weight:700;padding:5px 11px;border-radius:7px;white-space:nowrap;box-shadow:var(--shadow)}
.mfab-item .mf-btn{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;box-shadow:var(--shadow);font-size:19px;flex-shrink:0;transition:.2s}
.mfab-item:hover .mf-btn{transform:scale(1.08)}
.mfab-item.mf-wa .mf-btn{background:#25d366;color:#fff}
.mfab-item.mf-wa .mf-btn svg{width:24px;height:24px;fill:#fff}
.mfab-item.mf-chat .mf-btn{background:#fff;color:var(--ink);border:1px solid var(--line)}
.mfab-item.mf-top .mf-btn{background:var(--ink);color:#fff}
@media (max-width:760px){
  .mfab{display:flex}
  .chat-fab,.wa-fab,.to-top{display:none}
}

/* Success page */
.success-wrap{max-width:640px;margin:0 auto;text-align:center;padding:40px 0}
.success-ico{width:96px;height:96px;margin:0 auto 28px;border-radius:50%;background:#e9f8ef;display:flex;align-items:center;justify-content:center;font-size:44px;color:#1e7a3c}
.success-wrap h1{font-size:34px;font-weight:900;color:var(--ink)}
.success-wrap p{color:var(--muted);margin:16px 0 32px;font-size:16px}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .hero h1{font-size:38px}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .catalog-grid{grid-template-columns:repeat(3,1fr)}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav{display:none}
  .burger{display:flex}
  .site-header .lang-switch.lang-nav{display:none}
  .mobile-nav{display:block}
  .hero .container{grid-template-columns:1fr;padding-top:64px;padding-bottom:64px}
  .hero h1{font-size:34px}
  .about-band .container,.contact-band .container,.pd-wrap,.explore-grid{grid-template-columns:1fr}
  .about-media .float-img{display:none}
  .about-nums{grid-template-columns:repeat(2,1fr)}
  .topbar .tb-group:first-child{display:none}
  .pg-main{min-height:240px}
  .pg-main img{max-height:260px}
  .ag-main img{max-height:280px}
}
@media (max-width:640px){
  .app-grid,.case-grid,.news-grid,.catalog-grid,.prod-grid,.value-grid{grid-template-columns:1fr}
  .sec{padding:60px 0}
  .sec-title{font-size:27px}
  .hero h1{font-size:28px}
  .hero-stats{flex-wrap:wrap;gap:18px}
  .hero-stats .hs{border:none;padding-right:0;margin-right:18px}
  .page-hero h1{font-size:28px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .chat-panel{width:calc(100vw - 40px);right:20px}
  .chat-fab{height:52px;padding:0 12px 0 10px;right:18px;bottom:18px}
  .chat-fab .chat-fab-label{display:none}
  .country-dropdown{left:-10px;min-width:calc(100vw - 40px);max-width:320px}
}

/* ============ B2B RESOURCES ============ */
.btn-outline{background:transparent;color:var(--amber-d);border:2px solid var(--amber-d)}
.btn-outline:hover{background:var(--amber-d);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,166,35,.35)}
.b2b-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px;margin-bottom:36px}
.b2b-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px 26px;text-align:center;transition:.25s}
.b2b-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--amber)}
.b2b-ico{font-size:34px;margin-bottom:14px}
.b2b-card h4{font-size:17px;font-weight:800;margin-bottom:10px}
.b2b-card p{color:var(--muted);font-size:14px;line-height:1.7;margin-bottom:18px}
.cert-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.cert-badge{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;border:1.5px solid var(--line);background:#fff;font-size:13px;font-weight:800;letter-spacing:.6px;color:var(--ink);box-shadow:0 2px 8px rgba(15,44,76,.06)}
.cert-badge::before{content:"✔";color:var(--amber-d);font-weight:900}

/* ============ TESTIMONIALS ============ */
.testi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.testi-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 26px;position:relative;transition:.25s}
.testi-card:hover{box-shadow:var(--shadow);border-color:var(--amber)}
.testi-card .stars{color:#f5a623;font-size:16px;letter-spacing:3px;margin-bottom:14px}
.testi-card blockquote{color:var(--ink-2);font-size:14.5px;line-height:1.8;font-style:italic;margin-bottom:18px}
.testi-card blockquote::before{content:"“";font-size:30px;color:var(--amber);font-weight:900;line-height:0;vertical-align:-8px;margin-right:4px}
.testi-card figcaption{display:flex;flex-direction:column;border-top:1px solid var(--line);padding-top:14px}
.testi-card figcaption b{font-size:14px;color:var(--ink)}
.testi-card figcaption span{font-size:12.5px;color:var(--muted);margin-top:2px}

/* ============ PRODUCT SEARCH ============ */
.search-bar{position:relative;max-width:560px;margin:0 auto 26px}
.search-ico{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--muted);pointer-events:none}
.search-bar input[type="search"]{width:100%;padding:14px 44px 14px 46px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;background:#fff;outline:none;transition:.2s}
.search-bar input[type="search"]:focus{border-color:var(--amber)}
.search-clear{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:24px;height:24px;border:none;background:var(--line);border-radius:50%;color:var(--muted);font-size:13px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.search-clear:hover{background:var(--amber);color:#fff}
.result-count{text-align:center;font-size:14px;color:var(--muted);margin-bottom:14px}

/* ============ UNIT TOGGLE (PRODUCT PAGE) ============ */
.unit-bar{display:flex;gap:8px;justify-content:flex-end;align-items:center;margin-bottom:14px;font-size:14px;color:var(--muted)}
.unit-bar button{padding:6px 14px;border-radius:6px;border:1.5px solid var(--line);background:#fff;cursor:pointer;font-weight:700;color:var(--ink);font-size:13px;transition:.2s}
.unit-bar button.active{background:var(--amber);border-color:var(--amber);color:#fff}
.unit-bar span[data-i18n]{font-weight:800;color:var(--ink)}

/* ============ EMPTY STATE ============ */
.empty-state{max-width:420px;margin:34px auto;padding:44px 28px;text-align:center;background:#fff;border:1.5px dashed var(--line);border-radius:16px}
.empty-state svg{width:52px;height:52px;color:#b6c2cf;margin:0 auto 16px}
.empty-state h3{font-size:17px;font-weight:800;color:var(--ink)}
.empty-state p{font-size:14px;color:var(--muted);margin:8px 0 20px}
.empty-state .btn{padding:9px 22px;font-size:13.5px}

/* ============ HONEYPOT (anti-spam, hidden from humans) ============ */
.hp-field{position:absolute;left:-9999px;top:-9999px;height:0;overflow:hidden}

/* ============ INQUIRY STAGE MANAGEMENT (admin) ============ */
.inq-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.inq-tab{padding:7px 16px;border-radius:999px;border:1.5px solid var(--line);background:#fff;cursor:pointer;font-size:13px;font-weight:700;color:#6b7c8c;transition:.2s}
.inq-tab:hover{border-color:var(--amber)}
.inq-tab.on{background:var(--amber);border-color:var(--amber);color:#fff}
.stage-chip{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:800;letter-spacing:.5px;margin-left:8px}
.stage-chip.st-new{background:#fff4e0;color:#c07800}
.stage-chip.st-following{background:#e3edff;color:#2563c9}
.stage-chip.st-won{background:#e0f5e8;color:#128a4a}
.stage-chip.st-closed{background:#eef1f4;color:#6b7c8c}
.stage-select{padding:5px 10px;border-radius:6px;border:1.5px solid var(--line);background:#fff;font-size:12.5px;font-weight:700;color:#33475b;cursor:pointer;outline:none}
.stage-select:focus{border-color:var(--amber)}