/* =========================================================
   广东万度新材料有限公司 — Guangdong Wandu New Materials
   Clean, professional B2B theme. Self-contained (no external CDNs).
   ========================================================= */

:root{
  /* Brand */
  --brand:#1257b0;          /* primary blue (logo) */
  --brand-dark:#0a3d7e;
  --brand-bright:#2b7de9;
  --brand-50:#eef5ff;
  --brand-100:#dcebff;
  --sky:#e9f2fc;
  /* Rainbow accent (logo spectrum) */
  --rainbow:linear-gradient(90deg,#ff4d4d 0%,#ff9f1c 20%,#ffd23f 38%,#2ecc71 58%,#1e90ff 78%,#7b5cff 100%);
  /* Neutrals */
  --ink:#10243d;            /* headings */
  --body:#3c4b5c;           /* body text */
  --muted:#6c7c8e;          /* secondary text */
  --line:#e3eaf2;
  --line-2:#eef3f8;
  --bg:#ffffff;
  --bg-soft:#f5f8fc;
  --bg-soft-2:#eef4fb;
  /* Effects */
  --r:16px; --r-sm:12px; --r-lg:24px; --r-pill:999px;
  --shadow-sm:0 4px 14px rgba(14,42,73,.06);
  --shadow:0 10px 30px rgba(14,42,73,.09);
  --shadow-lg:0 22px 50px rgba(14,42,73,.14);
  --ring:0 0 0 4px rgba(43,125,233,.16);
  --max:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,
    "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--body);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;margin:0;font-weight:800;letter-spacing:-.01em}
p{margin:0}
.container{width:min(var(--max),92%);margin-inline:auto}
.muted{color:var(--muted)}
.center{text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);background:var(--brand-50);
  border:1px solid var(--brand-100);
  padding:6px 13px;border-radius:var(--r-pill);
}
.eyebrow::before{content:"";width:14px;height:3px;border-radius:3px;background:var(--rainbow)}

/* ---------- Top rainbow bar ---------- */
.topbar{height:4px;background:var(--rainbow)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 28px rgba(14,42,73,.08);background:rgba(255,255,255,.95)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 0}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-logo{height:42px;width:auto;object-fit:contain}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0;overflow:hidden}
.brand-name{font-size:24px;font-weight:900;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-.01em}
html[lang="en"] .brand-name{font-size:19px;letter-spacing:-.02em}
.brand-tag{font-size:11px;font-weight:700;color:var(--muted);letter-spacing:.04em;white-space:nowrap}
.nav{display:flex;align-items:center;gap:4px;flex:none}
.nav a{
  color:var(--body);font-weight:700;font-size:14px;
  padding:8px 11px;border-radius:10px;transition:color .15s,background .15s;
}
.nav a:hover{color:var(--brand);background:var(--brand-50)}
.nav a.active{color:var(--brand)}
.nav a.active{position:relative}
.nav a.active::after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;background:var(--brand)}
.nav .lang-btn{
  margin-left:6px;border:1px solid var(--line);color:var(--muted);
  font-size:12.5px;font-weight:800;padding:7px 12px;border-radius:var(--r-pill);
}
.nav .lang-btn:hover{border-color:var(--brand-100);color:var(--brand);background:var(--brand-50)}
.nav .quote-link{
  margin-left:4px;color:#fff;background:linear-gradient(135deg,var(--brand-bright),var(--brand));
  padding:9px 17px;border-radius:var(--r-pill);box-shadow:0 8px 20px rgba(43,125,233,.28);
}
.nav .quote-link:hover{color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-dark));transform:translateY(-1px)}
.nav-toggle{
  display:none;background:#fff;color:var(--ink);border:1px solid var(--line);
  border-radius:10px;padding:7px 11px;font-size:18px;cursor:pointer;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:13px 22px;font-weight:800;font-size:15px;color:var(--ink);
  background:#fff;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s,border-color .2s;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);border-color:var(--brand-100)}
.btn.primary{
  border-color:transparent;color:#fff;
  background:linear-gradient(135deg,var(--brand-bright),var(--brand));
  box-shadow:0 12px 26px rgba(43,125,233,.30);
}
.btn.primary:hover{box-shadow:0 16px 34px rgba(43,125,233,.40);background:linear-gradient(135deg,var(--brand),var(--brand-dark))}
.btn.ghost{background:transparent}
.btn.lg{padding:15px 26px;font-size:16px}
.btn-arrow{transition:transform .2s}
.btn:hover .btn-arrow{transform:translateX(3px)}
.link-arrow{color:var(--brand);font-weight:800;display:inline-flex;align-items:center;gap:6px}
.link-arrow .a{transition:transform .2s}
.link-arrow:hover .a{transform:translateX(3px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:78px 0 64px;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(43,125,233,.12),transparent 60%),
    radial-gradient(700px 380px at 6% 110%,rgba(124,92,255,.08),transparent 60%),
    linear-gradient(180deg,#f7faff 0%,#ffffff 70%);
  border-bottom:1px solid var(--line-2);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{
  font-size:clamp(31px,4.4vw,52px);font-weight:900;letter-spacing:-.02em;
  margin:20px 0 18px;color:var(--ink);
  overflow-wrap:break-word;word-break:break-word;
}
.hero h1 .hl{color:var(--brand);position:relative}
.hero p.lead{font-size:clamp(16px,1.6vw,18.5px);color:var(--body);max-width:600px;margin-bottom:8px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 6px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.stat{padding:16px 16px;border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--shadow-sm)}
.stat strong{display:block;font-size:20px;color:var(--ink);font-weight:900}
.stat span{display:block;color:var(--muted);font-weight:700;font-size:12.5px;margin-top:2px}

/* hero visual */
.hero-visual{position:relative}
.hero-img{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-lg);
  border:1px solid var(--line);aspect-ratio:4/3;background:#dfe8f3;
}
.hero-img img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;left:-14px;bottom:26px;z-index:2;
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:12px 16px;box-shadow:var(--shadow);
}
.hero-badge .dot{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-bright),var(--brand));color:#fff;font-weight:900}
.hero-badge b{display:block;color:var(--ink);font-size:14px}
.hero-badge small{color:var(--muted);font-weight:700}
.hero-mini{
  position:absolute;right:-10px;top:24px;z-index:2;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:12px 15px;box-shadow:var(--shadow);max-width:180px;
}
.hero-mini .rb{height:4px;width:46px;border-radius:4px;background:var(--rainbow);margin-bottom:8px}
.hero-mini b{color:var(--ink);font-size:14px;display:block}
.hero-mini small{color:var(--muted);font-weight:700}

/* ---------- Logo strip / trust ---------- */
.trust{padding:26px 0;border-bottom:1px solid var(--line-2);background:var(--bg-soft)}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 30px;align-items:center;justify-content:center}
.trust-row .t{display:flex;align-items:center;gap:9px;color:var(--muted);font-weight:800;font-size:14px}
.trust-row .t svg{flex:none}

/* ---------- Sections ---------- */
.section{padding:74px 0}
.section.soft{background:var(--bg-soft)}
.section.tint{background:linear-gradient(180deg,#fff, var(--bg-soft))}
.section-head{max-width:760px;margin-bottom:38px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head h2{font-size:clamp(25px,3vw,37px);font-weight:900;letter-spacing:-.02em}
.section-head p{margin-top:12px;color:var(--muted);font-size:16.5px}
.section-head.row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none}
.section-head.row > div{max-width:680px}

/* ---------- Grids ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}

/* ---------- Cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:24px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .25s,border-color .2s;
}
.card.hover:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-100)}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.feature .num{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  font-weight:900;color:#fff;font-size:15px;margin-bottom:16px;
  background:linear-gradient(135deg,var(--brand-bright),var(--brand));
  box-shadow:0 10px 22px rgba(43,125,233,.26);
}
.feature.alt .num{background:linear-gradient(135deg,#7b5cff,#2b7de9)}
.feature b{display:block;color:var(--ink);font-size:17px;font-weight:800;margin-bottom:6px}
.feature span{color:var(--muted);font-size:14.5px}
.feature .link-arrow{margin-top:14px}
.feature{display:flex;flex-direction:column}
.feature .grow{flex:1}

/* chip icons used for services */
.chip{
  display:inline-grid;place-items:center;min-width:54px;height:38px;padding:0 12px;
  border-radius:10px;font-weight:900;font-size:13px;letter-spacing:.04em;color:#fff;
  background:linear-gradient(135deg,var(--brand-bright),var(--brand));margin-bottom:14px;
}
.chip.c2{background:linear-gradient(135deg,#2ecc71,#1aa3a3)}
.chip.c3{background:linear-gradient(135deg,#ff9f1c,#ff6b3d)}
.chip.c4{background:linear-gradient(135deg,#7b5cff,#b14dff)}
.bullets{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.bullets li{position:relative;padding-left:24px;color:var(--body);font-size:14.5px;font-weight:600}
.bullets li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;
  background:var(--brand-50);box-shadow:inset 0 0 0 2px var(--brand-bright)}

/* ---------- Split section ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.split .media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);aspect-ratio:4/3;background:#dfe8f3}
.split .media img{width:100%;height:100%;object-fit:cover}
.list{display:grid;gap:12px;margin-top:22px}
.list-item{
  display:flex;gap:13px;padding:15px 17px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;box-shadow:var(--shadow-sm);
}
.list-item .ic{flex:none;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand);font-weight:900}
.list-item b{color:var(--ink)}
.list-item span{color:var(--muted)}
.list-item p{color:var(--muted);font-size:14.5px}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:42px 44px;display:flex;justify-content:space-between;align-items:center;gap:28px;
  background:linear-gradient(120deg,var(--brand-dark),var(--brand) 55%,var(--brand-bright));
  box-shadow:0 24px 50px rgba(10,61,126,.30);
}
.cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(500px 200px at 100% 0,rgba(255,255,255,.18),transparent 60%)}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(22px,2.5vw,30px)}
.cta-band p{color:rgba(255,255,255,.86);margin-top:8px;font-size:16px;max-width:620px}
.cta-band .btn{background:#fff;color:var(--brand-dark);border-color:#fff;flex:none}
.cta-band .btn:hover{background:#f1f6ff}
.cta-band .rb{position:absolute;left:0;right:0;top:0;height:4px;background:var(--rainbow);z-index:1}

/* ---------- Products page ---------- */
.product-layout{display:grid;grid-template-columns:264px 1fr;gap:26px;align-items:start}
.sidebar{position:sticky;top:92px}
.sidebar h3{font-size:15px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:13px}
.pill-row{display:flex;flex-wrap:wrap;gap:9px}
.pill{
  border:1px solid var(--line);background:#fff;color:var(--body);
  border-radius:var(--r-pill);padding:8px 15px;font-weight:800;font-size:13.5px;cursor:pointer;
  transition:.15s;
}
.pill:hover{border-color:var(--brand-100);color:var(--brand)}
.pill.active{background:linear-gradient(135deg,var(--brand-bright),var(--brand));color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(43,125,233,.26)}
.field{position:relative}
.field svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted)}
input,select,textarea{
  width:100%;border:1px solid var(--line);background:#fff;color:var(--ink);
  border-radius:var(--r-sm);padding:12px 14px;font:inherit;font-size:15px;transition:border-color .15s,box-shadow .15s;
}
#q{padding-left:40px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand-bright);box-shadow:var(--ring)}
textarea{min-height:120px;resize:vertical}
.hr{border:none;border-top:1px solid var(--line);margin:20px 0}
.note-box{background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-sm);padding:14px;color:var(--brand-dark);font-size:13.5px;font-weight:600}

.product-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px}
.product-count{color:var(--muted);font-weight:700;font-size:14px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.product{
  display:flex;flex-direction:column;overflow:hidden;padding:0;
}
.product-media{
  position:relative;background:#fff;border-bottom:1px solid var(--line-2);
  aspect-ratio:1/1;display:grid;place-items:center;padding:14px;
  background-image:
    linear-gradient(135deg,#fbfcfe,#f1f6fc);
}
.product-media img{width:100%;height:100%;object-fit:contain;mix-blend-mode:normal;transition:transform .3s}
.product:hover .product-media img{transform:scale(1.04)}
.product-tag{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:11.5px;font-weight:900;letter-spacing:.03em;color:var(--brand-dark);
  background:rgba(255,255,255,.92);border:1px solid var(--brand-100);
  padding:4px 10px;border-radius:var(--r-pill);
}
.product-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.product-name{font-weight:900;font-size:16.5px;color:var(--ink);margin-bottom:6px}
.product-note{font-size:13.5px;color:var(--muted);margin-bottom:4px}
.product-meta{font-size:12.5px;color:var(--brand);font-weight:800;margin-bottom:14px}
.product-actions{display:flex;gap:9px;margin-top:auto}
.product-actions a{
  flex:1;text-align:center;border-radius:var(--r-pill);padding:9px 10px;font-size:13px;font-weight:800;
  border:1px solid var(--line);color:var(--body);transition:.15s;
}
.product-actions a:hover{border-color:var(--brand-100);color:var(--brand);background:var(--brand-50)}
.product-actions a.primary{background:linear-gradient(135deg,var(--brand-bright),var(--brand));color:#fff;border-color:transparent}
.product-actions a.primary:hover{box-shadow:0 8px 18px rgba(43,125,233,.28)}
.empty-state{grid-column:1/-1;text-align:center;color:var(--muted);padding:60px 0;font-weight:700}

/* ---------- OEM anchor nav ---------- */
.anchor-nav{
  position:sticky;top:67px;z-index:35;background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.anchor-nav .container{display:flex;gap:6px;overflow:auto;padding:9px 0;scrollbar-width:none}
.anchor-nav .container::-webkit-scrollbar{display:none}
.anchor-nav a{white-space:nowrap;color:var(--muted);font-weight:800;font-size:13.5px;padding:7px 12px;border-radius:9px}
.anchor-nav a:hover{color:var(--brand);background:var(--brand-50)}

/* OEM hero with photo */
.oem-hero{
  position:relative;overflow:hidden;padding:80px 0 64px;color:#fff;border-bottom:1px solid var(--line);
  background:linear-gradient(120deg,rgba(8,38,78,.92),rgba(10,61,126,.86) 55%,rgba(18,87,176,.78)),
    url('./assets/about.jpg') center/cover no-repeat;
}
.oem-hero .eyebrow{color:#fff;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.28)}
.oem-hero h1{color:#fff;font-size:clamp(28px,4vw,46px);margin:18px 0 16px}
.oem-hero p.lead{color:rgba(255,255,255,.9)}
.oem-hero .stat{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);backdrop-filter:blur(6px)}
.oem-hero .stat strong{color:#fff}
.oem-hero .stat span{color:rgba(255,255,255,.78)}
.oem-hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.08)}
.oem-hero .btn.ghost:hover{background:rgba(255,255,255,.16)}

/* process steps */
.process{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;counter-reset:step}
.step{position:relative;padding:22px 16px 18px;border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--shadow-sm)}
.step-num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:900;
  background:linear-gradient(135deg,var(--brand-bright),var(--brand));margin-bottom:12px;box-shadow:0 8px 16px rgba(43,125,233,.26)}
.step b{display:block;color:var(--ink);font-size:15px;margin-bottom:4px}
.step p{color:var(--muted);font-size:13px}

/* cases */
.case .case-meta{display:grid;gap:8px;margin-top:16px}
.case-meta div{padding:10px 12px;border-radius:10px;background:var(--bg-soft);color:var(--body);font-weight:700;font-size:13.5px;border:1px solid var(--line-2)}
.case-meta div b{color:var(--brand)}

/* cert wall */
.cert-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cert{aspect-ratio:1.35;border:1px solid var(--line);border-radius:var(--r);background:#fff;display:grid;place-items:center;text-align:center;padding:16px;box-shadow:var(--shadow-sm)}
.cert .cert-ic{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;margin:0 auto 10px;background:var(--brand-50);color:var(--brand)}
.cert b{color:var(--ink);font-size:15px}
.cert small{color:var(--muted);font-weight:700;display:block;margin-top:3px}

/* faq */
.faq{display:grid;gap:12px;max-width:860px}
.faq details{border:1px solid var(--line);border-radius:var(--r);background:#fff;padding:6px 6px;box-shadow:var(--shadow-sm);transition:border-color .2s}
.faq details[open]{border-color:var(--brand-100)}
.faq summary{cursor:pointer;font-weight:800;color:var(--ink);padding:14px 16px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:15.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--brand);font-weight:700;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{color:var(--muted);padding:0 16px 16px;font-size:14.5px}

/* quote form */
.quote-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:start}
.quote-aside .card{margin-top:16px}
.quote-form{border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;background:#fff;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid label{display:block}
.form-grid label span{display:block;font-size:13.5px;color:var(--ink);font-weight:800;margin-bottom:7px}
.form-full{grid-column:1/-1}
.req{color:#e5484d}
.form-msg{margin:14px 0 0;font-weight:800}
.form-errors{color:#e5484d}
.form-success{color:#1a9d52}

/* contact */
.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.contact-card{display:flex;gap:16px;align-items:flex-start}
.contact-card .ic{flex:none;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand)}
.contact-card h3{margin-bottom:6px}
.contact-card a{color:var(--brand);font-weight:800}

/* ---------- Float CTA + modal ---------- */
.float-cta{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
.float-cta a,.float-cta button{
  display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:11px 16px;background:#fff;color:var(--ink);font-weight:800;font-size:14px;
  box-shadow:var(--shadow);cursor:pointer;transition:transform .15s;
}
.float-cta a:hover,.float-cta button:hover{transform:translateY(-2px)}
.float-cta .primary{background:linear-gradient(135deg,var(--brand-bright),var(--brand));color:#fff;border-color:transparent}
.float-cta .fb{background:#1877f2;color:#fff;border-color:transparent}
.float-cta .fb:hover{background:#0f63d6}
.modal[hidden]{display:none}
.modal-bg{position:fixed;inset:0;background:rgba(13,30,53,.55);z-index:80;backdrop-filter:blur(2px)}
.modal-panel{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);z-index:81;width:min(92vw,360px);
  background:#fff;color:var(--ink);border-radius:var(--r-lg);padding:26px;text-align:center;box-shadow:var(--shadow-lg)}
.modal-panel h3{margin-bottom:6px}
.modal-panel .close{position:absolute;right:14px;top:10px;border:none;background:transparent;font-size:26px;cursor:pointer;color:var(--muted)}
.qr-placeholder{height:200px;border-radius:var(--r);margin:16px 0 10px;display:grid;place-items:center;
  font-weight:800;color:var(--muted);background:repeating-linear-gradient(45deg,#eef3f9,#eef3f9 10px,#e2eaf3 10px,#e2eaf3 20px)}
.qr-img{display:block;width:230px;max-width:78%;height:auto;margin:16px auto 6px;border-radius:12px;border:1px solid var(--line)}

/* ---------- Footer ---------- */
.site-footer{background:#0c1f36;color:#aebdcf;padding:56px 0 26px;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .brand-name{color:#fff}
.footer-brand p{color:#8da0b6;margin-top:12px;font-size:14px;max-width:300px}
.footer-logo{display:none}
.footer-col h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px}
.footer-col a{display:block;color:#9fb0c4;font-size:14.5px;padding:5px 0;transition:color .15s}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:14px;padding-top:20px;flex-wrap:wrap}
.footer-bottom small{color:#7e91a8}
.footer-bottom .rb{height:4px;width:60px;border-radius:4px;background:var(--rainbow)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- Select dropdown readability ---------- */
select option,select optgroup{color:#10243d;background:#fff}

/* ---------- Responsive ---------- */
@media(max-width:1180px){ .brand-tag{display:none} }
@media(max-width:1280px){
  .brand-tag{display:none}
  .nav{display:none}
  .nav.open{
    display:flex;position:absolute;right:4%;top:62px;flex-direction:column;align-items:stretch;
    background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px;gap:4px;min-width:240px;
    box-shadow:var(--shadow-lg);z-index:60;
  }
  .nav.open a{padding:11px 13px}
  .nav.open a.active::after{display:none}
  .nav.open .lang-btn,.nav.open .quote-link{text-align:center;margin:6px 0 0}
  .nav-toggle{display:inline-flex}
}
@media(max-width:980px){
  .hero-grid,.split,.quote-layout,.contact-box{grid-template-columns:1fr;gap:34px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .product-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr)}
  .cert-wall{grid-template-columns:repeat(2,1fr)}
  .section-head.row{display:block}
  .section-head.row .btn{margin-top:16px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-top{grid-template-columns:1fr 1fr;gap:26px}
  .hero-mini{display:none}
}
@media(max-width:640px){
  .section{padding:54px 0}
  .hero{padding:54px 0 44px}
  .brand-name{font-size:18px}
  html[lang="en"] .brand-name{font-size:15px}
  .eyebrow{font-size:11px;letter-spacing:.04em;flex-wrap:wrap;max-width:100%}
  .stats,.grid-4,.grid-3,.grid-2,.form-grid{grid-template-columns:1fr}
  .product-grid{grid-template-columns:1fr 1fr;gap:14px}
  .process{grid-template-columns:1fr 1fr}
  .cert-wall{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr;gap:24px}
  .float-cta{left:12px;right:12px;bottom:12px;flex-direction:row}
  .float-cta a,.float-cta button{flex:1;justify-content:center;padding:12px 4px;font-size:12px;gap:4px}
  .hero-badge{left:0}
  .product-actions{flex-direction:column}
}
@media(max-width:380px){
  .product-grid{grid-template-columns:1fr}
}

/* ===================== Gallery ===================== */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.gallery-item{position:relative;display:block;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm);cursor:zoom-in;aspect-ratio:4/3;background:#eef3f9}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-item .cap{position:absolute;left:0;right:0;bottom:0;padding:22px 14px 11px;color:#fff;font-weight:800;font-size:13.5px;background:linear-gradient(transparent,rgba(7,20,36,.74));opacity:0;transition:.2s}
.gallery-item:hover .cap{opacity:1}
.gallery-item .zoom{position:absolute;top:10px;right:10px;width:30px;height:30px;border-radius:9px;background:rgba(255,255,255,.9);display:grid;place-items:center;color:var(--brand);font-weight:900;opacity:0;transition:.2s}
.gallery-item:hover .zoom{opacity:1}
.gallery-sub{font-size:13px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin:6px 0 14px}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:90;background:rgba(7,18,33,.92);display:none;align-items:center;justify-content:center;padding:24px}
.lightbox.open{display:flex}
.lightbox img{max-width:94vw;max-height:86vh;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lightbox .lb-close{position:absolute;top:14px;right:20px;font-size:34px;color:#fff;background:none;border:none;cursor:pointer;line-height:1}
.lightbox .lb-nav{position:absolute;top:50%;transform:translateY(-50%);font-size:26px;color:#fff;background:rgba(255,255,255,.14);border:none;width:50px;height:50px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.lightbox .lb-nav:hover{background:rgba(255,255,255,.26)}
.lightbox .lb-prev{left:16px}.lightbox .lb-next{right:16px}
.lightbox .lb-cap{position:absolute;bottom:16px;left:0;right:0;text-align:center;color:#dce8f5;font-weight:700;font-size:14px}

/* brochure / PDF */
.brochure{display:grid;grid-template-columns:1fr 1.25fr;gap:26px;align-items:center}
.brochure-cover{aspect-ratio:1/1.414;border-radius:var(--r);border:1px solid var(--line);box-shadow:var(--shadow);background:linear-gradient(150deg,var(--brand),var(--brand-dark));color:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:28px;position:relative;overflow:hidden}
.brochure-cover .rb{position:absolute;top:0;left:0;right:0;height:5px;background:var(--rainbow)}
.brochure-cover .big{font-size:42px;font-weight:900;letter-spacing:.04em}
.brochure-cover .sub{margin-top:10px;color:rgba(255,255,255,.85);font-weight:700}
.brochure-cover .pages{margin-top:18px;font-size:13px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);padding:5px 12px;border-radius:999px;font-weight:800}
.pdf-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.pdf-wrap{margin-top:24px}
.pdf-frame{width:100%;height:80vh;min-height:520px;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);background:#fff}
.pdf-loadbtn{width:100%;border:1px dashed var(--brand-100);background:var(--brand-50);color:var(--brand-dark);border-radius:var(--r);padding:30px;font-weight:800;cursor:pointer;font-size:16px}
.pdf-loadbtn:hover{background:var(--brand-100)}

/* ===================== Projects / article list ===================== */
.proj-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.notice{background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r);padding:14px 16px;color:var(--brand-dark);font-weight:600;font-size:14px;margin-bottom:24px}
.article-list{display:grid;gap:18px}
.article-card{display:grid;grid-template-columns:230px 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-sm);overflow:hidden;transition:.2s}
.article-card:hover{box-shadow:var(--shadow);border-color:var(--brand-100);transform:translateY(-2px)}
.article-card .thumb{aspect-ratio:4/3;background:linear-gradient(140deg,var(--brand),var(--brand-bright));display:grid;place-items:center;color:#fff;overflow:hidden;position:relative}
.article-card .thumb img{width:100%;height:100%;object-fit:cover}
.article-card .thumb .ph{font-size:30px;font-weight:900;opacity:.85}
.article-body{padding:20px 22px;display:flex;flex-direction:column;justify-content:center}
.article-body .date{font-size:12.5px;color:var(--brand);font-weight:800;letter-spacing:.04em}
.article-body h3{margin:7px 0 9px;font-size:18.5px}
.article-body p{color:var(--muted);font-size:14.5px;margin-bottom:10px}
@media(max-width:980px){ .brochure{grid-template-columns:1fr;gap:20px} .brochure-cover{max-width:300px;margin-inline:auto} }
@media(max-width:640px){
  .article-card{grid-template-columns:1fr}
  .article-card .thumb{aspect-ratio:16/9}
  .lightbox .lb-nav{width:42px;height:42px}
}

/* project grid (real cases) */
.proj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:18px}
.proj-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .25s,border-color .2s}
.proj-card:hover{box-shadow:var(--shadow);border-color:var(--brand-100);transform:translateY(-3px)}
.proj-card .thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:#eef3f9}
.proj-card .thumb img{width:100%;height:100%;object-fit:cover;object-position:center 42%;transition:transform .35s}
.proj-card:hover .thumb img{transform:scale(1.05)}
.proj-card .body{padding:15px 17px 17px;display:flex;flex-direction:column;flex:1}
.proj-card .meta{font-size:12px;color:var(--brand);font-weight:800;letter-spacing:.02em;margin-bottom:6px}
.proj-card h3{font-size:16px;margin-bottom:8px;line-height:1.32}
.proj-card p{color:var(--muted);font-size:13.5px;flex:1;margin-bottom:12px}
.proj-card .more{font-weight:800;color:var(--brand);font-size:13px;display:inline-flex;align-items:center;gap:5px}
.proj-card .more .a{transition:transform .2s}
.proj-card:hover .more .a{transform:translateX(3px)}

/* homepage brand-image hero (manual cover background) */
.hero-brand{
  color:#fff;border-bottom:1px solid rgba(255,255,255,.12);
  background:linear-gradient(100deg,rgba(7,20,40,.90) 0%,rgba(7,20,40,.60) 45%,rgba(10,32,60,.28) 100%),url('./assets/hero-bg.jpg') center 38%/cover no-repeat;
}
.hero-brand .eyebrow{color:#fff;background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.30)}
.hero-brand h1{color:#fff}
.hero-brand h1 .hl{color:#74c9ff}
.hero-brand p.lead{color:rgba(255,255,255,.92)}
.hero-brand .stat{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.22);box-shadow:none;backdrop-filter:blur(3px)}
.hero-brand .stat strong{color:#fff}
.hero-brand .stat span{color:rgba(255,255,255,.82)}
.hero-brand .btn:not(.primary){color:#fff;border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.10)}
.hero-brand .btn:not(.primary):hover{background:rgba(255,255,255,.2);border-color:#fff;box-shadow:none}

/* ===================== Product detail ===================== */
.pd-back{display:inline-block;margin-bottom:18px}
.pd-top{display:grid;grid-template-columns:.95fr 1.05fr;gap:34px;align-items:start}
.pd-media{background:linear-gradient(135deg,#fbfcfe,#eef4fb);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;display:grid;place-items:center;aspect-ratio:1/1;box-shadow:var(--shadow-sm)}
.pd-media img{width:100%;height:100%;object-fit:contain}
.pd-cat{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.04em;color:var(--brand-dark);background:var(--brand-50);border:1px solid var(--brand-100);padding:5px 13px;border-radius:var(--r-pill)}
.pd-summary h1{font-size:clamp(26px,3.2vw,38px);margin:14px 0 10px}
.pd-tagline{font-size:17px;color:var(--muted);font-weight:600;margin-bottom:18px}
.pd-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.pd-chip{font-size:13px;font-weight:700;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 13px}
.pd-chip::before{content:"✓ ";color:var(--brand);font-weight:900}
.pd-actions{display:flex;gap:12px;flex-wrap:wrap}
.pd-body{max-width:840px;margin-top:46px}
.pd-body h2{font-size:20px;margin:30px 0 12px;padding-left:13px;border-left:4px solid var(--brand);line-height:1.2}
.pd-body h2:first-child{margin-top:0}
.pd-body p{color:var(--body);font-size:15.5px;line-height:1.8}
.pd-list{margin:0;padding:0;list-style:none;display:grid;gap:9px}
.pd-list li{position:relative;padding-left:24px;color:var(--body);font-size:15px}
.pd-list li::before{content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:50%;background:var(--brand-bright)}
.pd-steps{margin:0;padding:0;list-style:none;counter-reset:s;display:grid;gap:12px}
.pd-steps li{position:relative;counter-increment:s;padding:13px 16px 13px 50px;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:var(--shadow-sm);color:var(--body);font-size:15px}
.pd-steps li::before{content:counter(s);position:absolute;left:12px;top:11px;width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,var(--brand-bright),var(--brand));color:#fff;font-weight:900;font-size:13px;display:grid;place-items:center}
.pd-disclaimer{margin-top:26px;background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-sm);padding:14px 16px;color:var(--brand-dark);font-size:13.5px;font-weight:600}
@media(max-width:760px){ .pd-top{grid-template-columns:1fr;gap:22px} .pd-media{max-width:360px} }