/* ==========================================================================
   Rongyue Crafts – rebuilt theme (static templates)
   Brand cues kept from the old site: charcoal menu tab (#2f2f2f), grey
   gradient side panel, Georgia serif, orange hover accent (#ff6600),
   dark red FAQ accent (#990000).
   ========================================================================== */
:root{
  --c-ink:#2f2f2f;
  --c-text:#555;
  --c-muted:#8a969e;
  --c-line:#e1e5e8;
  --c-panel:#eef1f3;
  --c-panel-2:#dfe4e8;
  --c-accent:#ff6600;
  --c-red:#990000;
  --c-white:#fff;
  --radius:4px;
  --shadow:0 1px 3px rgba(0,0,0,.08);
  --shadow-hover:0 8px 22px rgba(0,0,0,.12);
  --container:1100px;
  --font:Georgia,"Times New Roman",Times,serif;
  --font-ui:"Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:15px;line-height:1.7;color:var(--c-text);
  background:#fff linear-gradient(#e9edf0,#fff 420px) no-repeat}
img{max-width:100%;height:auto;display:block}
a{color:#666;text-decoration:underline;text-underline-offset:2px}
a:hover,a:focus-visible{color:var(--c-accent)}
h1,h2,h3,h4{color:#111;line-height:1.3;margin:0 0 .6em}
h1{font-size:1.6rem}h2{font-size:1.25rem}h3{font-size:1.05rem}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-999px;top:0;background:var(--c-ink);color:#fff;padding:8px 12px;z-index:100}
.skip-link:focus{left:10px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.4em;font-family:var(--font-ui);font-size:13px;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;text-decoration:none;padding:.75em 1.4em;border-radius:var(--radius);
  border:1px solid var(--c-ink);background:var(--c-ink);color:#fff;cursor:pointer;transition:.2s}
.btn:hover,.btn:focus-visible{background:var(--c-accent);border-color:var(--c-accent);color:#fff}
.btn-outline{background:transparent;color:var(--c-ink)}
.btn-sm{padding:.5em 1em;font-size:12px}

/* ---------- header ---------- */
.site-header{position:relative;z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:22px;padding-bottom:14px;border-bottom:1px solid #a3aeb5}
.logo img{width:249px;height:auto}
.main-nav ul{display:flex;gap:2px}
.main-nav a{display:block;padding:.55em 1em;font-family:var(--font-ui);font-size:13px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;text-decoration:none;color:#333;border-radius:var(--radius) var(--radius) 0 0;position:relative}
.main-nav a:hover,.main-nav a:focus-visible,.main-nav a.active{background:var(--c-ink);color:#fff}
.main-nav a.active::after{content:"";position:absolute;left:50%;bottom:-6px;margin-left:-6px;border:6px solid transparent;border-top-color:var(--c-ink);border-bottom:0}
.nav-toggle{display:none;background:none;border:1px solid #bbb;border-radius:var(--radius);width:44px;height:40px;cursor:pointer;padding:0}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{display:block;width:20px;height:2px;background:var(--c-ink);margin:0 auto;position:relative;transition:.2s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
.nav-open .nav-toggle span{background:transparent}
.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

/* ---------- hero (home) ---------- */
.hero{display:grid;grid-template-columns:304px 1fr;gap:24px;padding:24px 0 10px}
.hero-aside{background:linear-gradient(var(--c-panel-2),#f7f8f9);padding:26px 28px;border-radius:var(--radius)}
.hero-aside h2,.panel-title{font-family:var(--font-ui);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#000;margin:0 0 .5em}
.hero-aside p{font-size:14px}
.slider{position:relative;overflow:hidden;border-radius:var(--radius);box-shadow:var(--shadow);aspect-ratio:534/205;background:#222}
.slider-track{display:flex;height:100%;transition:transform .6s ease}
.slide{flex:0 0 100%;height:100%;position:relative}
.slide a,.slide img{display:block;width:100%;height:100%;object-fit:cover}
.slide-caption{position:absolute;left:0;bottom:0;padding:6px 14px;background:rgba(0,0,0,.55);color:#fff;font-size:13px;font-family:var(--font-ui);letter-spacing:.05em;text-transform:uppercase}
.slider-dots{position:absolute;right:12px;bottom:10px;display:flex;gap:6px}
.slider-dots button{width:22px;height:22px;border-radius:50%;border:1px solid #fff;background:rgba(0,0,0,.4);color:#fff;font-size:11px;cursor:pointer;padding:0}
.slider-dots button[aria-current="true"]{background:var(--c-accent);border-color:var(--c-accent)}

/* ---------- search box ---------- */
.search-form{display:flex;margin-top:.4em}
.search-form input{flex:1;min-width:0;border:1px solid #ccc;background:#f7f7f7;padding:.55em .7em;font:inherit;font-size:14px;border-radius:var(--radius) 0 0 var(--radius)}
.search-form button{border:1px solid var(--c-ink);background:var(--c-ink);color:#fff;padding:0 .9em;border-radius:0 var(--radius) var(--radius) 0;cursor:pointer}
.search-form button:hover{background:var(--c-accent);border-color:var(--c-accent)}
.search-form svg{width:16px;height:16px;fill:currentColor;display:block}

/* ---------- page layout ---------- */
.page-wrap{padding:28px 0 40px}
.layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:30px;align-items:start}
.layout>.sidebar{grid-column:1;grid-row:1}
.layout>.content{grid-column:2;grid-row:1}
.sidebar{display:flex;flex-direction:column;gap:22px}
.side-box{background:linear-gradient(var(--c-panel-2),#f7f8f9 220px);border-radius:var(--radius);padding:20px 22px}
.cat-tree>li{border-bottom:1px solid #d3d9de}
.cat-tree>li:last-child{border-bottom:0}
.cat-tree>li>a{display:block;padding:.5em 0;font-family:var(--font-ui);font-weight:700;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:#222;text-decoration:none}
.cat-tree ul{padding:0 0 .6em .9em}
.cat-tree ul a{display:block;padding:.15em 0 .15em 14px;font-size:14px;text-decoration:none;color:#666;position:relative}
.cat-tree ul a::before{content:"";position:absolute;left:0;top:.75em;border:4px solid transparent;border-left-color:#999}
.cat-tree a:hover,.cat-tree a.active{color:var(--c-accent)}
.cat-tree a.active::before{border-left-color:var(--c-accent)}
.category_list>li{border-bottom:1px solid #d3d9de}
.category_list>li:last-child{border-bottom:0}
.category_list>li>a{display:block;padding:.5em 0;font-family:var(--font-ui);font-weight:700;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:#222;text-decoration:none}
.category_list .category_sublist{padding:0 0 .6em .9em}
.category_list .category_sublist a{display:block;padding:.15em 0 .15em 14px;font-size:14px;text-decoration:none;color:#666;position:relative}
.category_list .category_sublist a::before{content:"";position:absolute;left:0;top:.75em;border:4px solid transparent;border-left-color:#999}
.category_list a:hover,.category_list a.active{color:var(--c-accent)}
.category_list a.active::before{border-left-color:var(--c-accent)}
.contact-mini{font-size:14px}
.contact-mini p{margin:0 0 .5em}
.content{min-width:0}
.content-head{border-bottom:1px solid var(--c-line);margin-bottom:22px;padding-bottom:10px}
.content-head h1{font-size:1.5rem;margin:0}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:.4em;padding:0;margin:0 0 .4em;list-style:none;font-size:13px;color:var(--c-muted);font-family:var(--font-ui)}
.breadcrumb li+li::before{content:"\203A";margin-right:.4em}
.breadcrumb a{color:var(--c-muted)}
.prose{font-size:15px}
.prose h3{margin-top:1.4em}
.lead{font-size:1.05rem;color:#444}

/* ---------- home sections ---------- */
.section{padding:34px 0}
.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-bottom:1px solid var(--c-line);margin-bottom:22px;padding-bottom:8px}
.section-title h2{margin:0;font-family:var(--font-ui);font-size:15px;letter-spacing:.1em;text-transform:uppercase}
.section-title a{font-family:var(--font-ui);font-size:13px}
.home-grid{display:grid;grid-template-columns:304px 1fr;gap:24px}
.cat-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-card{display:block;text-align:center;text-decoration:none;color:#555;background:#fff;border:1px solid #ccc;border-radius:var(--radius);overflow:hidden;transition:.2s}
.cat-card:hover{border-color:var(--c-accent);box-shadow:var(--shadow-hover);color:var(--c-accent)}
.cat-card .thumb{aspect-ratio:172/158;max-height:260px;margin:0 auto;padding:8px;background:#fff;display:flex;align-items:center;justify-content:center}
.cat-card img{width:100%;height:100%;object-fit:contain}
.cat-card h3{font-family:var(--font-ui);font-size:13px;letter-spacing:.06em;text-transform:uppercase;margin:0;padding:.8em .5em;color:inherit;border-top:1px solid var(--c-line)}
.cat-card small{display:block;font-weight:400;color:var(--c-muted);text-transform:none;letter-spacing:0;margin-top:2px}
.about-strip{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:6px}
.fact{background:var(--c-panel);border-radius:var(--radius);padding:16px;text-align:center}
.fact strong{display:block;font-size:1.6rem;color:var(--c-ink)}
.fact span{font-size:13px;color:var(--c-muted);font-family:var(--font-ui)}
.cta-bar{background:var(--c-ink);color:#ddd;border-radius:var(--radius);padding:22px 26px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.cta-bar p{margin:0;font-size:1.05rem}
.cta-bar .btn{background:var(--c-accent);border-color:var(--c-accent)}
.cta-bar .btn:hover{background:#fff;color:var(--c-ink);border-color:#fff}
.about-video{width:100%;margin-top:20px;}
.about-video video{display:block;width:100%;height:auto;max-width:100%;background:#111;}
.video-embed video{display:block;width:100%;height:auto;max-width:100%;background:#111;}
.about-video-more{margin: 26px auto 0;text-align:left;display: block;width: 120px;}

/* ---------- product grid ---------- */
.pro-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.pro-grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.pro-card{background:#fff;border:1px solid #ccc;border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.pro-card:hover{border-color:var(--c-accent);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.pro-card{position:relative}
.pro-card .zoom{position:absolute;top:6px;right:6px;width:30px;height:30px;border-radius:50%;background:rgba(47,47,47,.75);color:#fff;text-decoration:none;display:flex;align-items:center;justify-content:center;font-size:15px;opacity:0;transition:.2s}
.pro-card:hover .zoom,.pro-card .zoom:focus-visible{opacity:1}
.pro-card .zoom:hover{background:var(--c-accent);color:#fff}
@media (hover:none){.pro-card .zoom{opacity:1}}
.pro-card .thumb{display:block;aspect-ratio:172/142.2;background:#fff}
.pro-card .thumb img{width:100%;height:100%;object-fit:contain;max-height: 12.4rem;}
.pro-card .info{padding:.6em .8em .8em;border-top:1px solid var(--c-line);text-align:center}
.pro-card h3{font-family:var(--font-ui);font-size:14px;margin:0;letter-spacing:.04em}
.pro-card h3 a{text-decoration:none;color:#333}
.pro-card h3 a:hover{color:var(--c-accent)}
.pro-card .cat{font-size:12px;color:var(--c-muted);font-family:var(--font-ui)}
.list-meta{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--c-muted);font-family:var(--font-ui);margin-bottom:16px}
.pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:6px;margin-top:30px;padding-top:18px;border-top:1px dashed #ccc;font-family:var(--font-ui)}
.pagination a,.pagination span{min-width:38px;height:38px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;border:1px solid #ccc;border-radius:var(--radius);font-size:13px;text-decoration:none;color:#555;background:#fff}
.pagination a:hover{border-color:var(--c-accent);color:var(--c-accent)}
.pagination .current{background:var(--c-ink);border-color:var(--c-ink);color:#fff}
.pagination .disabled{opacity:.45}
.empty{text-align:center;padding:60px 0;color:var(--c-muted)}

/* ---------- product detail ---------- */
.pro-detail{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:30px;align-items:start}
.pro-gallery{border:1px solid #ccc;border-radius:var(--radius);background:#fff;overflow:hidden}
.pro-gallery a{display:block;cursor:zoom-in}
.pro-gallery img{width:100%;height:auto}
.pro-gallery figcaption{font-size:12px;color:var(--c-muted);padding:.5em .8em;border-top:1px solid var(--c-line);font-family:var(--font-ui)}
.spec{width:100%;border-collapse:collapse;font-size:14px;margin:0 0 20px}
.spec th,.spec td{text-align:left;padding:.55em .7em;border-bottom:1px solid var(--c-line);vertical-align:top}
.spec th{width:38%;color:#333;font-family:var(--font-ui);font-size:13px;background:var(--c-panel)}
.pro-actions{display:flex;gap:10px;flex-wrap:wrap}
.pro-nav{display:flex;justify-content:space-between;gap:10px;margin-top:26px;padding-top:14px;border-top:1px dashed #ccc;font-size:14px}
.related{margin-top:36px}

/* ---------- lightbox ---------- */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.85);display:none;align-items:center;justify-content:center;z-index:200;padding:20px}
.lightbox.open{display:flex}
.lightbox img{max-height:90vh;max-width:95vw;width:auto;background:#fff}
.lightbox button{position:absolute;top:14px;right:18px;background:none;border:0;color:#fff;font-size:34px;line-height:1;cursor:pointer}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:8px}
.faq-list details{background:#f2f2f2;border:1px solid transparent;border-radius:var(--radius);transition:.2s}
.faq-list details[open]{background:#fff;border:1px dashed var(--c-red)}
.faq-list summary{cursor:pointer;list-style:none;padding:.7em 2.4em .7em 1em;color:#333;position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:1em;top:.55em;font-size:1.2em;color:var(--c-red)}
.faq-list details[open] summary{color:var(--c-red);font-weight:700}
.faq-list details[open] summary::after{content:"\2212"}
.faq-list .answer{padding:0 1em 1em;color:#333}
.faq-list .answer a{color:var(--c-red)}

/* ---------- contact & forms ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 30px}
.contact-card{background:var(--c-panel);border-radius:var(--radius);padding:18px 20px}
.contact-card h3{font-family:var(--font-ui);font-size:14px;letter-spacing:.04em;margin-bottom:.4em}
.contact-card p{margin:0 0 .3em;font-size:14px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px}
.form-grid .full{grid-column:1/-1}
.field label{display:block;font-family:var(--font-ui);font-size:13px;font-weight:700;color:#333;margin-bottom:.35em}
.field label .req{color:var(--c-red)}
.field input,.field textarea,.field select{width:100%;font:inherit;font-size:15px;padding:.6em .75em;border:1px solid #ccc;border-radius:var(--radius);background:#fafafa;color:#333}
.field input:focus,.field textarea:focus{outline:2px solid rgba(255,102,0,.35);border-color:var(--c-accent);background:#fff}
.field textarea{min-height:150px;resize:vertical}
.field .error{color:var(--c-red);font-size:12px;font-family:var(--font-ui);display:none;margin-top:.3em}
.field.invalid input,.field.invalid textarea{border-color:var(--c-red)}
.field.invalid .error{display:block}
.form-note{font-size:13px;color:var(--c-muted);font-family:var(--font-ui)}
.form-status{display:none;padding:.8em 1em;border-radius:var(--radius);margin-top:14px;font-family:var(--font-ui);font-size:14px}
.form-status.show{display:block;background:#eef7ee;border:1px solid #9c9;color:#363}
.map-note{font-size:14px}

/* ---------- search & news ---------- */
.search-head{background:var(--c-panel);border-radius:var(--radius);padding:16px 18px;margin-bottom:20px}
.search-head .search-form{max-width:460px}
mark{background:#ffe2cc;color:inherit;padding:0 2px}
.news-list>li{display:grid;grid-template-columns:200px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--c-line)}
.news-list>li:first-child{padding-top:0}
.news-list .thumb{display:block;aspect-ratio:4/3;overflow:hidden;border:1px solid #ccc;border-radius:var(--radius);background:#fff}
.news-list .thumb img{width:100%;height:100%;object-fit:cover}
.news-list h2{font-size:1.1rem;margin:0 0 .3em}
.news-list h2 a{text-decoration:none;color:#222}
.news-list h2 a:hover{color:var(--c-accent)}
.meta{font-size:13px;color:var(--c-muted);font-family:var(--font-ui);margin-bottom:.5em}
.article-body img{margin:1em 0;border:1px solid #ccc;border-radius:var(--radius)}

/* ---------- footer ---------- */
.site-footer{border-top:3px solid #e6e9eb;margin-top:20px;background:#fafbfb;font-size:13px;color:#92a6b2;font-family:var(--font-ui)}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding:30px 20px 20px}
.footer-top h2{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#444;margin-bottom:.8em}
.footer-top li{margin:.25em 0}
.footer-top a{color:#7d8f9a}
.footer-top a:hover{color:var(--c-accent)}
.footer-bottom{border-top:1px solid #e6e9eb;padding:14px 20px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.footer-bottom a{color:#92a6b2}
.back-top{position:fixed;right:18px;bottom:18px;width:42px;height:42px;border-radius:50%;background:var(--c-ink);color:#fff;border:0;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;font-size:18px;z-index:50}
.back-top.show{opacity:.85;pointer-events:auto}
.back-top:hover{background:var(--c-accent)}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero,.home-grid{grid-template-columns:1fr}
  .hero-aside{order:2}
  .layout{grid-template-columns:minmax(0,1fr)}
  .layout>.sidebar,.layout>.content{grid-column:1;grid-row:auto}
  .pro-grid.cols-4{grid-template-columns:repeat(3,minmax(0,1fr))}
  .about-strip{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav-toggle{display:block}
  .header-inner{flex-wrap:wrap}
  .main-nav{flex-basis:100%;display:none}
  .nav-open .main-nav{display:block}
  .main-nav ul{flex-direction:column;gap:0;border-top:1px solid var(--c-line);margin-top:10px}
  .main-nav a{border-radius:0;padding:.85em .6em;border-bottom:1px solid var(--c-line)}
  .main-nav a.active::after{display:none}
  .logo img{width:190px}
  .pro-grid,.pro-grid.cols-4,.cat-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .pro-detail,.contact-cards,.form-grid{grid-template-columns:1fr}
  .news-list>li{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr 1fr 1fr}
  .footer-top{grid-template-columns:1fr}
  body{font-size:14.5px}
}
@media (max-width:420px){
  .cat-cards{grid-template-columns:1fr 1fr}
  .fact{padding:12px 6px}.fact strong{font-size:1.2rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header nav,.sidebar,.site-footer,.back-top,.nav-toggle{display:none}.layout{grid-template-columns:1fr}}