/* ============================================================
   LUMEN OFFICE — responsive stylesheet
   Palette: ink navy / warm paper / vermilion accent
   ============================================================ */
:root{
  --ink:#16283c;
  --ink-2:#24405c;
  --ink-3:#3b5875;
  --paper:#faf8f3;
  --cream:#f2ece2;
  --cream-2:#e9e0d2;
  --white:#ffffff;
  --accent:#c4431f;
  --accent-dark:#a83a1a;
  --muted:#5f6974;
  --line:#e4ddd1;
  --shadow:0 18px 45px rgba(22,40,60,.10);
  --shadow-sm:0 8px 24px rgba(22,40,60,.08);
  --radius:16px;
  --font-sans:"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Songti SC","SimSun",serif;
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);overflow-x:hidden;
  font-family:var(--font-sans);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
[hidden]{display:none!important}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;line-height:1.2;letter-spacing:-.01em}
p{margin:0 0 1em}
button{font-family:inherit;cursor:pointer}

.container{width:min(var(--container),92vw);margin:0 auto}
.skip-link{position:absolute;left:16px;top:-64px;z-index:200;background:var(--ink);color:#fff;padding:12px 18px;border-radius:10px;font:600 14px/1 var(--font-sans);transition:top .2s ease}
.skip-link:focus{top:14px}
main:focus{outline:none}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
#main,#inquiry{scroll-margin-top:96px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-head h2{font-size:clamp(28px,3.4vw,44px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:600 12px/1 var(--font-sans);letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);display:inline-block}
.section-head p{max-width:520px;color:var(--muted);margin:0}
.lead{font-size:clamp(17px,1.5vw,19px);color:var(--ink-3)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 26px;border-radius:999px;font:600 15px/1 var(--font-sans);border:1px solid transparent;transition:.25s ease;white-space:nowrap}
.btn svg{width:16px;height:16px;transition:transform .25s ease}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(226,84,44,.28)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--ink-2);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(22,40,60,.22);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(22,40,60,.05)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(250,248,243,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(22,40,60,.06);transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 10px 30px rgba(22,40,60,.08)}
.header-inner{display:flex;align-items:center;gap:32px;height:84px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand img{height:48px;width:auto;display:block}
.brand-tag{font:500 9px/1.65 var(--font-sans);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);border-left:1px solid var(--line);padding-left:14px;max-width:230px}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.main-nav>a{position:relative;padding:10px 14px;font:600 14px/1 var(--font-sans);letter-spacing:.02em;color:var(--ink-2);border-radius:999px;transition:.2s}
.main-nav>a:hover{color:var(--accent);background:rgba(226,84,44,.07)}
.main-nav>a.active{color:var(--accent)}
.main-nav>a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--accent);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.lang-switch{position:relative}
.lang-btn{display:flex;align-items:center;gap:7px;background:none;border:1px solid rgba(22,40,60,.16);border-radius:999px;padding:9px 14px;font:600 12px/1 var(--font-sans);letter-spacing:.08em;color:var(--ink-2);text-transform:uppercase}
.lang-btn:hover{border-color:var(--ink)}
.lang-menu{position:absolute;right:0;top:calc(100% + 10px);min-width:150px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s;z-index:120}
.lang-switch.open .lang-menu{opacity:1;visibility:visible;transform:none}
.lang-menu a{display:block;padding:9px 14px;border-radius:9px;font-size:14px;color:var(--ink-2)}
.lang-menu a:hover{background:var(--cream)}
.lang-menu a.active{color:var(--accent);font-weight:700}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid rgba(22,40,60,.16);border-radius:12px;background:none;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 480px at 82% 0%,rgba(226,84,44,.10),transparent 62%),
  linear-gradient(180deg,#f7f2e9 0%,var(--paper) 100%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(22,40,60,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(22,40,60,.045) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 72%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:48px;padding:88px 0 96px}
.hero-copy .eyebrow{margin-bottom:20px}
.hero-copy h1{font-size:clamp(40px,5.4vw,68px);letter-spacing:-.02em}
.hero-copy h1 em{font-style:italic;color:var(--accent)}
.hero-copy p{margin:26px 0 34px;max-width:520px;font-size:clamp(16px,1.6vw,19px);color:var(--ink-3)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{position:relative}
.hero-art img{width:100%;height:auto;aspect-ratio:7/6;object-fit:cover;object-position:center 62%;border-radius:26px;box-shadow:0 30px 60px rgba(22,40,60,.18)}
.hero-note{position:absolute;left:-8px;bottom:26px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);padding:12px 18px;font:600 13px/1.4 var(--font-sans);color:var(--ink-2);display:flex;align-items:center;gap:10px}
.hero-note i{width:9px;height:9px;border-radius:50%;background:#2f9e63;box-shadow:0 0 0 4px rgba(47,158,99,.15)}

/* ---------- stats ---------- */
.stats{border-top:1px solid rgba(22,40,60,.08);border-bottom:1px solid rgba(22,40,60,.08);background:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:34px 26px;border-left:1px solid rgba(22,40,60,.08)}
.stat:first-child{border-left:none}
.stat b{display:block;font-family:var(--font-serif);font-size:40px;line-height:1;color:var(--ink)}
.stat b span{color:var(--accent)}
.stat em{display:block;margin-top:10px;font:500 13px/1.4 var(--font-sans);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-style:normal}

/* ---------- category grid ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s ease}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(226,84,44,.35)}
.cat-media{aspect-ratio:4/3;background:var(--cream);overflow:hidden}
.cat-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .cat-media img{transform:scale(1.05)}
.cat-body{padding:20px 22px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.cat-body h3{font-size:20px}
.cat-body span{width:34px;height:34px;border-radius:50%;border:1px solid rgba(22,40,60,.18);display:flex;align-items:center;justify-content:center;transition:.25s;flex:0 0 auto}
.cat-card:hover .cat-body span{background:var(--accent);border-color:var(--accent);color:#fff}
.cat-body svg{width:14px;height:14px}

/* ---------- products ---------- */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.product-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s ease}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.product-media{position:relative;aspect-ratio:1/1;background:var(--cream);overflow:hidden}
.product-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.product-card:hover .product-media img{transform:scale(1.06)}
.product-badge{position:absolute;left:14px;top:14px;background:var(--ink);color:#fff;font:600 10px/1 var(--font-sans);letter-spacing:.14em;text-transform:uppercase;padding:7px 10px;border-radius:999px}
.product-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.product-body h3,.product-body h2{font-size:18px;line-height:1.35;font-family:var(--font-sans);font-weight:700}
.product-body p{font-size:13.5px;color:var(--muted);margin:0;flex:1}
.product-link{display:inline-flex;align-items:center;gap:8px;font:600 13px/1 var(--font-sans);color:var(--accent);margin-top:6px;position:relative}
.product-link::after{content:"";position:absolute;left:0;right:0;top:-9px;bottom:-9px}
.product-link svg{width:13px;height:13px;transition:transform .25s}
.product-card:hover .product-link svg{transform:translateX(3px)}

/* ---------- split / features ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-media img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:24px;box-shadow:var(--shadow)}
.split-copy h2{font-size:clamp(28px,3.2vw,42px);margin-bottom:20px}
.split-copy p{color:var(--ink-3)}
.feature-list{margin-top:28px;display:grid;gap:16px}
.feature-list li{display:flex;gap:14px;align-items:flex-start}
.feature-list .dot{width:30px;height:30px;border-radius:9px;background:rgba(226,84,44,.1);color:var(--accent);display:flex;align-items:center;justify-content:center;flex:0 0 auto;font-weight:700}
.feature-list b{display:block;font-size:15px}
.feature-list span{font-size:14px;color:var(--muted)}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .thumb{aspect-ratio:16/10;background:var(--cream);overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .thumb img{transform:scale(1.05)}
.news-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card time{font:600 11px/1 var(--font-sans);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.news-card h3,.news-card h2{font-size:19px;font-family:var(--font-sans);font-weight:700;line-height:1.4}
.news-card p{font-size:14px;color:var(--muted);margin:0;flex:1}

/* ---------- CTA band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:28px;padding:64px;display:grid;grid-template-columns:1.4fr .6fr;align-items:center;gap:32px}
.cta-band::after{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(226,84,44,.45),transparent 68%)}
.cta-band h2{font-size:clamp(28px,3.4vw,44px);margin-bottom:14px;position:relative;z-index:1}
.cta-band p{color:rgba(255,255,255,.72);margin:0;position:relative;z-index:1}
.cta-band .btn{position:relative;z-index:1;justify-self:end}

/* ---------- page hero / inner ---------- */
.page-hero{background:linear-gradient(180deg,var(--cream) 0%,var(--paper) 100%);border-bottom:1px solid rgba(22,40,60,.07);padding:64px 0 56px}
.page-hero h1{font-size:clamp(34px,4vw,52px)}
.page-hero p{margin:16px 0 0;max-width:640px;color:var(--ink-3)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{color:var(--ink-2)}

.layout-side{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:start}
.sidebar{position:sticky;top:110px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px}
.side-title{padding:12px 16px;font:700 12px/1 var(--font-sans);letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.sidebar a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 16px;border-radius:10px;font-size:14.5px;font-weight:600;color:var(--ink-2);transition:.2s}
.sidebar a:hover{background:var(--cream)}
.sidebar a.active{background:var(--ink);color:#fff}
.sidebar a.side-sub{justify-content:flex-start;gap:8px;padding:9px 16px 9px 26px;font-weight:500;font-size:13.5px;color:var(--muted)}
.sidebar a.side-sub::before{content:"·";color:var(--accent);flex:0 0 auto}
.sidebar a.side-sub:hover{color:var(--ink);background:var(--cream)}
.sidebar a.side-sub.active{background:var(--cream);color:var(--ink);font-weight:700}
.cat-grid-3{grid-template-columns:repeat(3,1fr)}
.sidebar a i{opacity:.5;font-style:normal}

/* ---------- product detail ---------- */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
.gallery-main{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;aspect-ratio:1/1}
.gallery-main img{width:100%;height:100%;object-fit:cover}
.gallery-thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:14px}
.gallery-thumbs:not(:has(button + button)){display:none}
.gallery-thumbs button{border:1px solid var(--line);background:var(--cream);border-radius:10px;overflow:hidden;padding:0;aspect-ratio:1/1}
.gallery-thumbs button.active{border-color:var(--accent);box-shadow:0 0 0 2px rgba(226,84,44,.2)}
.gallery-thumbs button img{width:100%;height:100%;object-fit:cover;display:block}
.detail-info h1{font-size:clamp(28px,3vw,40px);margin-bottom:12px}
.detail-sub{color:var(--accent);font-weight:600;margin-bottom:20px}
.detail-desc{color:var(--ink-3);font-size:15px}
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:24px 0}
.spec{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.spec dt{font:600 11px/1 var(--font-sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.spec dd{margin:0;font-size:14px;font-weight:600}
.detail-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}

/* ---------- content typography ---------- */
.rich{font-size:15.5px;color:var(--ink-3)}
.rich h2,.rich h3{color:var(--ink);margin:28px 0 12px}
.rich h2{font-size:20px;font-family:var(--font-sans);font-weight:700}.rich h3{font-size:20px;font-family:var(--font-sans);font-weight:700}
.rich ul{list-style:disc;padding-left:22px;margin:0 0 18px}
.rich li{margin-bottom:8px}
.rich img{border-radius:14px;margin:18px 0}

/* ---------- contact / form ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.info-card+.info-card{margin-top:16px}
.info-card h3,.info-card h2{font-size:18px;font-family:var(--font-sans);font-weight:700;margin-bottom:14px}
.info-row{display:flex;gap:14px;padding:12px 0;border-top:1px dashed var(--line);font-size:14.5px}
.info-row:first-of-type{border-top:none}
.info-row b{flex:0 0 110px;font:600 12px/1.6 var(--font-sans);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.info-row span{color:var(--ink-2);word-break:break-word}
.info-row a{color:var(--ink-2)}
.info-row a:hover{color:var(--accent)}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.form h3,.form h2{margin-bottom:8px;font-size:24px}
.form .hint{color:var(--muted);font-size:14px;margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font:600 12px/1 var(--font-sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.field input,.field textarea{width:100%;border:1px solid var(--line);background:var(--paper);border-radius:12px;padding:13px 15px;font:16px/1.5 var(--font-sans);color:var(--ink);outline:none;transition:.2s}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(226,84,44,.12)}
.form .btn{width:100%}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px}
.map-box{margin-top:20px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--cream);min-height:260px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;text-align:center;padding:30px}

/* ---------- article ---------- */
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:44px}
.article h1{font-size:clamp(28px,3.2vw,40px);margin-bottom:14px}
.article-meta{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding-bottom:22px;margin-bottom:26px;border-bottom:1px solid var(--line)}
.article-nav{display:flex;justify-content:space-between;gap:20px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);font-size:14px}
.article-nav a:hover{color:var(--accent)}

/* ---------- pagination ---------- */
.empty-state{padding:64px 24px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted)}
.empty-state h2{font-size:22px;color:var(--ink);margin-bottom:8px}
.empty-state p{margin:0 0 20px;font-size:14.5px}
.empty-state .btn{margin:0 auto}
.to-top{position:fixed;right:18px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--ink);color:#fff;border:none;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(22,40,60,.18);opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s ease;z-index:90;cursor:pointer}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--accent)}
.to-top svg{width:18px;height:18px}
.pagination{display:flex;justify-content:center;gap:8px;margin-top:44px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:40px;height:40px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;font-size:14px;font-weight:600;background:#fff}
.pagination a:hover{border-color:var(--accent);color:var(--accent)}
.pagination .active,.pagination span.active{background:var(--ink);border-color:var(--ink);color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78)}
.footer-top{display:grid;grid-template-columns:1.3fr .7fr .7fr 1fr;gap:44px;padding:64px 0 48px}
.footer-brand img{height:42px;width:auto;margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px}
.site-footer h4,.site-footer h2{color:#fff;font:700 12px/1 var(--font-sans);letter-spacing:.18em;text-transform:uppercase;margin-bottom:18px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:.2s}
.footer-links a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;font-size:14px;margin-bottom:12px;color:rgba(255,255,255,.72)}
.footer-contact b{color:#fff;font-weight:600}
.footer-contact a{color:rgba(255,255,255,.78)}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;padding:64px 0 72px;gap:40px}
  .hero-art{max-width:560px}
  .cat-grid,.product-grid,.cat-grid-3{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:none}
  .stat:nth-child(n+3){border-top:1px solid rgba(22,40,60,.08)}
  .split{grid-template-columns:1fr;gap:40px}
  .detail-grid{grid-template-columns:1fr;gap:34px}
  .layout-side{grid-template-columns:1fr}
  .sidebar{position:static;display:flex;gap:6px;overflow-x:auto;padding:8px;scrollbar-width:none;-ms-overflow-style:none}
  .sidebar::-webkit-scrollbar{display:none}
  .side-title{display:none}
  .sidebar a{white-space:nowrap;padding:10px 14px}
  .footer-top{grid-template-columns:1fr 1fr}
  .brand-tag{display:none}
}
@media (min-width:1081px) and (max-width:1099px){.brand-tag{display:none}}
@media (max-width:860px){
  .header-inner{gap:10px}
  .brand{flex:0 1 auto;min-width:0}
  .brand img{height:38px}
  .header-actions{gap:8px}
  .main-nav{position:fixed;left:0;right:0;top:76px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:16px 5vw 24px;gap:4px;display:none;box-shadow:0 24px 40px rgba(22,40,60,.12)}
  body.nav-open .main-nav{display:flex}
  .main-nav>a{padding:14px 10px;border-radius:10px;font-size:16px}
  .main-nav>a.active::after{display:none}
  .nav-toggle{display:flex}
  .header-inner{gap:16px;height:76px}
  .header-actions .btn-dark{display:none}
  .hero-note{left:auto;right:0}
  .section{padding:72px 0}
  .cta-band{grid-template-columns:1fr;padding:44px 34px}
  .cta-band .btn{justify-self:start}
  .contact-grid{grid-template-columns:1fr}
  .article{padding:28px 22px}
  .form{padding:24px}
}
@media (max-width:480px){
  .header-inner{height:66px;gap:8px}
  .brand img{height:34px}
  .main-nav{top:66px}
  .lang-btn{padding:8px 10px;font-size:11px}
  .header-actions .btn-dark{display:none}
}
@media (max-width:640px){
  .cat-grid,.product-grid,.news-grid,.cat-grid-3{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{padding:22px 18px}
  .stat b{font-size:32px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .form-row{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:34px;padding:48px 0 32px}
  .detail-actions .btn{flex:1}
  .gallery-thumbs{grid-template-columns:repeat(4,1fr)}
  .spec-grid{grid-template-columns:1fr 1fr}
  .breadcrumb{font-size:12px}
  .hero-copy h1{font-size:40px}
  .page-hero{padding:44px 0 40px}
}