:root{
  --ink:#1b1712;
  --ink-2:#2b241c;
  --paper:#f6f2ea;
  --card:#fffdf8;
  --accent:#b4552b;
  --accent-deep:#8f3f1d;
  --accent-soft:#f0e1d3;
  --muted:#6f665a;
  --line:#e5dccd;
  --white:#fff;
  --font-serif:"Fraunces","Noto Serif SC",Georgia,"Songti SC",serif;
  --font-sans:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --shadow:0 18px 40px -18px rgba(27,23,18,.28);
  --radius:14px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul{list-style:none}

.container{max-width:1180px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-head{max-width:680px;margin-bottom:46px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-block;
  letter-spacing:.22em;
  text-transform:uppercase;
  font-size:12.5px;
  font-weight:700;
  color:var(--accent);
}
.section-title{
  font-family:var(--font-serif);
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.12;
  margin-top:14px;
  font-weight:600;
}
.section-sub{color:var(--muted);margin-top:14px;font-size:16px}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:999px;
  font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:background .25s,color .25s,border-color .25s,transform .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-dark:hover{background:var(--accent)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%;justify-content:center}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(246,242,234,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo{
  font-family:var(--font-serif);
  font-size:22px;font-weight:700;
  letter-spacing:.14em;
}
.logo-dot{color:var(--accent)}
.logo-light{color:var(--paper)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:14px;font-weight:500;color:var(--ink-2);transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.nav-cta{display:flex;align-items:center;gap:14px}
.lang-btn{
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);
  font-size:13.5px;font-weight:600;cursor:pointer;
  transition:border-color .2s,color .2s;
}
.lang-btn:hover{border-color:var(--accent);color:var(--accent)}
.burger{
  display:none;flex-direction:column;gap:5px;
  background:none;border:0;cursor:pointer;padding:6px;
}
.burger span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.nav.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.nav-open .burger span:nth-child(2){opacity:0}
.nav.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 84px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.hero-title{
  font-family:var(--font-serif);
  font-size:clamp(40px,5.2vw,70px);
  line-height:1.05;font-weight:600;
  margin:20px 0 22px;
}
.hero-title em{font-style:italic;color:var(--accent)}
.hero-sub{font-size:17px;color:var(--muted);max-width:520px}
.hero-ctas{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-stats{display:flex;gap:44px;margin-top:56px;flex-wrap:wrap}
.stat b{font-family:var(--font-serif);font-size:30px;display:block;line-height:1.2}
.stat span{font-size:13px;color:var(--muted)}
.hero-media{position:relative}
.hero-media img{
  border-radius:var(--radius);
  aspect-ratio:4/5;object-fit:cover;
  box-shadow:var(--shadow);
  width:100%;
}
.hero-media::before{
  content:"";position:absolute;inset:-26px -26px auto auto;
  width:190px;height:190px;background:var(--accent-soft);
  border-radius:50%;z-index:-1;
}
.hero-media::after{
  content:"";position:absolute;inset:auto auto -22px -22px;
  width:120px;height:120px;
  border:2px dashed var(--accent);opacity:.45;
  border-radius:50%;z-index:-1;
}

/* ---------- Page hero (sub pages) ---------- */
.page-hero{padding:72px 0 56px;border-bottom:1px solid var(--line)}
.page-hero .section-title{font-size:clamp(32px,4vw,50px)}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a:hover{color:var(--accent)}

/* ---------- Category cards ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  aspect-ratio:3/4;display:block;background:var(--card);
  border:1px solid var(--line);
}
.cat-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.cat-card:hover img{transform:scale(1.05)}
.cat-label{
  position:absolute;left:14px;bottom:14px;
  background:rgba(27,23,18,.84);color:var(--paper);
  padding:9px 16px;border-radius:999px;
  font-size:13.5px;font-weight:600;
  backdrop-filter:blur(4px);
}
.cat-card .cat-sub{position:absolute;right:14px;top:14px;font-size:12px;color:rgba(255,255,255,.85)}

/* ---------- Grids & product cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:26px}
.product-card{
  background:var(--card);border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);
  transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.product-media{position:relative;aspect-ratio:4/5;overflow:hidden;background:var(--accent-soft)}
.product-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.product-card:hover .product-media img{transform:scale(1.06)}
.product-media .tag{
  position:absolute;left:12px;top:12px;
  background:var(--accent);color:#fff;
  font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;
}
.product-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.product-name{font-family:var(--font-serif);font-size:19px;font-weight:600;line-height:1.3}
.product-summary{font-size:13.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-meta{display:flex;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px;margin-top:auto}
.product-meta b{color:var(--ink);font-weight:600}
.product-link{margin-top:2px;font-size:13.5px;font-weight:600;color:var(--accent)}
.product-link:hover{text-decoration:underline}

/* ---------- Features ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feature{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:28px 26px;
  transition:transform .25s,box-shadow .25s;
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-icon{width:46px;height:46px;border-radius:12px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feature-icon svg{width:24px;height:24px;stroke:var(--accent-deep)}
.feature h3{font-family:var(--font-serif);font-size:19px;margin-bottom:8px;font-weight:600}
.feature p{font-size:14px;color:var(--muted)}

/* ---------- Process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 22px;position:relative;
}
.step-num{font-family:var(--font-serif);font-size:36px;color:var(--accent);line-height:1}
.step h3{font-size:16px;margin:16px 0 8px;font-weight:700}
.step p{font-size:13.5px;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);
  border-radius:24px;padding:64px 48px;
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-family:var(--font-serif);font-size:clamp(26px,3vw,38px);line-height:1.15;font-weight:600}
.cta-band p{color:#bdb4a6;margin-top:10px;max-width:480px}
.cta-band .btn{background:var(--accent);color:#fff}
.cta-band .btn:hover{background:var(--accent-deep)}

/* ---------- Filters ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.filter-btn{
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);
  font-size:14px;font-weight:500;cursor:pointer;
  transition:background .2s,color .2s,border-color .2s;
}
.filter-btn:hover{border-color:var(--ink)}
.filter-btn.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.empty-state{color:var(--muted);padding:40px 0;text-align:center}

/* ---------- Product detail ---------- */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.gallery img{width:100%;border-radius:var(--radius);aspect-ratio:4/5;object-fit:cover;box-shadow:var(--shadow)}
.thumbs{display:flex;gap:12px;margin-top:14px}
.thumbs img{
  width:88px;height:110px;object-fit:cover;border-radius:10px;
  cursor:pointer;border:2px solid transparent;transition:border-color .2s;
}
.thumbs img.active{border-color:var(--accent)}
.detail-title{font-family:var(--font-serif);font-size:clamp(30px,3.4vw,44px);line-height:1.12;font-weight:600}
.detail-summary{color:var(--muted);margin-top:16px;font-size:16px}
.spec-table{width:100%;border-collapse:collapse;margin-top:22px}
.spec-table td{padding:13px 6px;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:top}
.spec-table td:first-child{color:var(--muted);width:36%;font-weight:500}
.quote-box{
  background:var(--accent-soft);border-radius:14px;
  padding:26px;margin-top:34px;
}
.quote-box h3{font-family:var(--font-serif);font-size:21px;margin-bottom:8px}
.quote-box p{font-size:14.5px;color:var(--ink-2);margin-bottom:18px}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-grid img{border-radius:var(--radius);width:100%;box-shadow:var(--shadow)}
.about-grid h2{font-family:var(--font-serif);font-size:clamp(28px,3vw,38px);line-height:1.15;margin:14px 0 18px}
.about-grid p{color:var(--muted);margin-bottom:14px}
.cert-list{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.cert-chip{
  border:1px solid var(--line);background:var(--card);
  padding:10px 18px;border-radius:999px;font-size:14px;font-weight:600;
}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.value-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:30px 26px;
}
.value-card h3{font-family:var(--font-serif);font-size:20px;margin-bottom:10px}
.value-card p{font-size:14.5px;color:var(--muted)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.form-card h2{font-family:var(--font-serif);font-size:26px;margin-bottom:6px}
.form-card .note{font-size:13.5px;color:var(--muted);margin-bottom:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600}
.field input,.field select,.field textarea{
  padding:13px 15px;border:1px solid var(--line);border-radius:10px;
  background:#fff;font:inherit;color:var(--ink);transition:border-color .2s;
}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.info-card{background:var(--ink);color:#d9d2c6;border-radius:var(--radius);padding:34px}
.info-card h2{font-family:var(--font-serif);color:var(--paper);font-size:24px;margin-bottom:8px}
.info-card>p{font-size:14.5px;margin-bottom:26px;color:#bdb4a6}
.info-row{padding:16px 0;border-top:1px solid rgba(255,255,255,.12)}
.info-row .label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#948b7d;margin-bottom:5px}
.info-row a,.info-row p{font-size:15px;color:var(--paper)}
.info-row a:hover{color:var(--accent-soft)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--card);margin-bottom:12px;overflow:hidden}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:20px 22px;text-align:left;background:none;border:0;cursor:pointer;
  font-family:var(--font-serif);font-size:18px;font-weight:600;line-height:1.35;
}
.faq-q .plus{flex-shrink:0;font-size:22px;color:var(--accent);transition:transform .25s;font-family:var(--font-sans)}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:15px}

/* ---------- Legal pages ---------- */
.prose{max-width:780px}
.prose h2{font-family:var(--font-serif);font-size:22px;margin:34px 0 10px}
.prose p,.prose li{color:var(--muted);font-size:15px;margin-bottom:10px}
.prose ul{padding-left:0;margin-bottom:12px}
.prose ul li{padding-left:22px;position:relative}
.prose ul li::before{content:"—";position:absolute;left:2px;color:var(--accent)}
.updated{font-size:13px;color:var(--muted);margin-top:8px}

/* ---------- 404 ---------- */
.nf{text-align:center;padding:120px 24px}
.nf .code{font-family:var(--font-serif);font-size:110px;line-height:1;color:var(--accent)}
.nf h1{font-family:var(--font-serif);font-size:34px;margin:12px 0}
.nf p{color:var(--muted);margin-bottom:28px}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:#d9d2c6;padding:72px 0 30px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer .logo{display:inline-block;margin-bottom:18px}
.footer-desc{font-size:14px;color:#bdb4a6;max-width:300px}
.footer h4{color:var(--paper);font-family:var(--font-serif);font-size:17px;margin-bottom:16px;letter-spacing:.05em}
.footer a{display:block;padding:5px 0;font-size:14px;color:#bdb4a6;transition:color .2s}
.footer a:hover{color:var(--paper)}
.footer-addr{margin-top:6px;font-size:14px;color:#bdb4a6}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:52px;padding-top:22px;
  display:flex;justify-content:space-between;align-items:center;
  gap:12px;flex-wrap:wrap;font-size:13px;color:#948b7d;
}
.footer-links{display:flex;gap:18px}
.footer-links a{display:inline;padding:0}

/* ---------- Reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
[data-reveal].visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1020px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(3,1fr)}
  .value-grid{grid-template-columns:1fr}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-media{max-width:520px}
  .detail-grid{grid-template-columns:1fr;gap:40px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav-links{
    position:fixed;top:72px;left:0;right:0;
    background:var(--paper);flex-direction:column;align-items:flex-start;
    padding:26px 28px;gap:20px;
    border-bottom:1px solid var(--line);
    transform:translateY(-120%);opacity:0;pointer-events:none;
    transition:transform .3s ease,opacity .3s ease;
    box-shadow:0 24px 40px -28px rgba(27,23,18,.3);
  }
  .nav.nav-open .nav-links{transform:none;opacity:1;pointer-events:auto}
  .burger{display:flex}
  .nav-cta .btn{display:none}
  .hero{padding:72px 0 64px}
  .hero-stats{gap:28px}
  .section{padding:68px 0}
  .cta-band{padding:44px 30px}
  .form-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .cat-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .container{padding:0 18px}
  .hero-stats{gap:22px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  [data-reveal]{opacity:1;transform:none}
}