/* 内页与功能组件：产品中心、3D 展厅 */
header nav{gap:26px}
.page-hero{padding:64px 8% 40px;border-bottom:1px solid #ded2c0;display:flex;align-items:flex-end;justify-content:space-between;gap:30px}
.page-hero h1{font-size:clamp(30px,3.6vw,52px);line-height:1.35;letter-spacing:3px;margin:14px 0 0}
.page-hero p.lead{margin:0;max-width:430px;font-size:13px}
.page-body{padding:56px 8% 90px}
.note{font-size:12px;line-height:2;color:var(--muted)}

/* 产品中心 */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 34px}
.filters button{background:none;border:1px solid #cdbfa9;color:var(--muted);padding:10px 24px;font-size:13px}
.filters button[aria-pressed=true]{background:var(--red);border-color:var(--red);color:var(--paper)}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.product-grid.single{grid-template-columns:minmax(0,460px);justify-content:center}
.product-feature{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.product-feature-media{background:radial-gradient(circle at 50% 40%,#fbf6ea,#efe3cf);border:1px solid #d9cbb6;padding:8%}
.product-feature-media img{width:100%;height:auto;display:block;object-fit:contain}
.product-feature-copy h1{font-size:clamp(28px,3.2vw,44px);margin:10px 0;letter-spacing:2px}
.feature-tagline{color:var(--red);font-size:14px;margin:0 0 12px}
.feature-desc{font-size:13px;line-height:2;color:var(--muted)}
.feature-specs{padding-left:17px;margin:12px 0 20px;font-size:12px;line-height:2;color:var(--muted)}
.viewer-section{margin-top:72px;border-top:1px solid #ded2c0;padding-top:48px}
.viewer-embed{position:relative;height:720px;border:1px solid #d9cbb6;background:#0f1730;overflow:hidden;margin-top:24px}
.viewer-embed iframe{width:100%;height:100%;border:0;display:block}
.viewer-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:start;margin-top:24px}
.viewer-section .stage-wrap{min-height:520px}
.photo-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:54px}
.photo-pair figure{margin:0;border:1px solid #d9cbb6;background:#fbf7ee}
.photo-pair img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.photo-pair figcaption{font-size:11px;color:var(--muted);padding:10px 12px;letter-spacing:1px}
.gallery-head{margin-top:58px}
.gallery-head h2{font-size:26px;margin:6px 0 18px}
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.gallery-item{padding:0;border:1px solid #d9cbb6;background:#fbf7ee;overflow:hidden;cursor:pointer}
.gallery-item img{width:100%;aspect-ratio:1;object-fit:cover;display:block;transition:transform .45s}
.gallery-item:hover img{transform:scale(1.04)}
.product-card{border:1px solid #d9cbb6;background:#fbf7ee;display:flex;flex-direction:column;text-align:left;padding:0;overflow:hidden;transition:transform .25s,box-shadow .25s}
.product-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px #422b261f}
.product-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#e9dfcd}
.product-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.product-media img.cut{object-fit:contain;padding:9%;background:radial-gradient(circle at 50% 45%,#fbf6ea,#efe3cf)}
.product-card:hover .product-media img{transform:scale(1.04)}
.product-media .state-badge{position:absolute;left:14px;top:14px;background:#822b2be6;color:#f7e5c6;font-size:10px;letter-spacing:2px;padding:6px 10px}
.product-info{padding:20px 22px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.product-info h3{font-size:22px;margin:0}
.product-info p{font-size:12px;line-height:1.9;color:var(--muted);margin:0}
.product-info .more{margin-top:auto;font-size:12px;color:var(--red);border-bottom:1px solid #c9a873;align-self:flex-start;padding-bottom:4px}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:60px 0;font-size:13px}

/* 产品详情 */
#product-dialog{max-width:760px;padding:0;overflow:auto;max-height:92vh}
#product-dialog .detail-grid{display:grid;grid-template-columns:1.15fr 1fr}
#product-dialog .detail-media{background:#e9dfcd;min-height:360px;position:relative}
#product-dialog .detail-media img{width:100%;height:100%;object-fit:cover;display:block;min-height:360px}
#product-dialog .detail-media img.cut{object-fit:contain;padding:8%;background:radial-gradient(circle at 50% 45%,#fbf6ea,#efe3cf)}
.detail-gallery{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.detail-gallery .thumb{width:56px;height:56px;padding:0;border:1px solid #cdbfa9;background:#f6f0e4;overflow:hidden}
.detail-gallery .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.detail-gallery .thumb.active{border-color:var(--red);box-shadow:0 0 0 1px var(--red)}
#product-dialog .detail-copy{padding:34px 32px 30px;display:flex;flex-direction:column;gap:12px}
#product-dialog .detail-copy h2{font-size:27px;margin:0}
#product-dialog .detail-copy p{font-size:13px;line-height:2;color:var(--muted);margin:0}
#product-dialog ul{padding-left:17px;margin:2px 0 0}
#product-dialog li{font-size:12px;line-height:2;color:var(--muted)}
#product-dialog .detail-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:14px}
.state-toggle{display:flex;gap:8px;margin-top:2px}
.state-toggle button{background:none;border:1px solid #cdbfa9;color:var(--muted);font-size:11px;padding:8px 14px}
.state-toggle button[aria-pressed=true]{background:#eadfcd;border-color:#b99a6b;color:var(--dark)}
.detail-actions .ghost{background:none;border:1px solid var(--red);color:var(--red);padding:13px 18px;font-size:12px}
.detail-actions .button{padding:13px 20px;font-size:12px;gap:14px}

/* 3D 展厅 */
.exp-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:46px;align-items:start}
.stage-wrap{position:relative;border:1px solid #d9cbb6;background:radial-gradient(circle at 50% 38%,#f6ecdb,#e6d5ba);min-height:520px;overflow:hidden}
#stage{position:absolute;inset:0;cursor:grab;touch-action:none}
#stage.dragging{cursor:grabbing}
.stage-hint{position:absolute;left:18px;bottom:16px;font-size:10px;letter-spacing:2px;color:#786d5f;background:#f6f0e4cc;padding:7px 10px}
.stage-state{position:absolute;right:18px;top:16px;font-size:10px;letter-spacing:2px;color:var(--red);background:#f6f0e4cc;padding:7px 10px}
.exp-slider{display:flex;align-items:center;gap:14px;margin-top:14px;font-size:12px;color:var(--muted)}
.exp-slider label{white-space:nowrap;letter-spacing:2px}
.exp-slider input[type=range]{flex:1;accent-color:var(--red);height:24px}
.exp-slider span{min-width:38px;text-align:right;color:var(--red);letter-spacing:2px}
.exp-controls{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.exp-controls button{border:1px solid var(--red);background:var(--red);color:var(--paper);padding:12px 20px;font-size:12px}
.exp-controls button.ghost{background:none;color:var(--red)}
.exp-copy h2{margin-top:0}
.exp-copy p{font-size:13px;line-height:2;color:var(--muted)}
.exp-points{padding-left:17px;margin:18px 0}
.exp-points li{font-size:12px;line-height:2.1;color:var(--muted)}
.photo-strip{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:42px}
.photo-strip figure{margin:0;border:1px solid #d9cbb6;background:#fbf7ee}
.photo-strip img{width:100%;aspect-ratio:1;object-fit:cover;display:block}
.photo-strip figcaption{font-size:10px;color:var(--muted);padding:7px 8px;letter-spacing:1px}

/* 长文排版（保留给说明页） */
.doc{display:grid;grid-template-columns:210px 1fr;gap:56px;align-items:start}
.doc-toc{position:sticky;top:24px;font-size:12px;line-height:2.4;border-left:1px solid #d9cbb6;padding-left:18px}
.doc-toc a{display:block;color:var(--muted)}
.doc-toc a:hover{color:var(--red)}
.doc article h2{font-size:26px;margin:46px 0 14px;padding-top:8px}
.doc article h2:first-child{margin-top:0}
.doc article p,.doc article li{font-size:13px;line-height:2.1;color:#5d5145}
.doc article ul,.doc article ol{padding-left:20px}
.doc article code{background:#eadfcd;padding:2px 6px;font-size:12px;border-radius:2px}
.doc article pre{background:#422b26;color:#f2e7d5;padding:18px 20px;overflow:auto;font-size:12px;line-height:1.9}
.doc article pre code{background:none;padding:0;color:inherit}
.doc article table{width:100%;border-collapse:collapse;font-size:12px;margin:14px 0}
.doc article th,.doc article td{border-bottom:1px solid #d9cbb6;padding:10px 8px;text-align:left;color:#5d5145}
.doc article th{color:var(--dark)}
.callout{border-left:3px solid var(--gold);background:#f1e7d6;padding:14px 18px;font-size:12px;line-height:2;margin:16px 0}
.doc-single{grid-template-columns:1fr;max-width:900px;margin:0 auto}
.doc article img{max-width:100%;height:auto}
.doc article blockquote{border-left:3px solid var(--gold);margin:18px 0;padding:4px 18px;color:#5d5145;font-size:13px;line-height:2;background:#f6efe1}
.doc-nav{max-width:900px;margin:40px auto 0;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:12px;border-top:1px solid #d9cbb6;padding-top:18px}
.doc-nav a{color:var(--red)}

/* 联系与微信 */
.wechat-row{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:14px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.wechat-row strong{color:var(--red);letter-spacing:1px;font-weight:500}
.wechat-row button{background:none;border:1px solid #b99a6b;color:var(--dark);padding:8px 14px;font-size:11px}
.contact-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:22px}
.contact-card{border:1px solid #d9cbb6;background:#fbf7ee;padding:28px 26px;display:flex;flex-direction:column;gap:12px}
.contact-card.primary{background:var(--red);color:#f2e2c6;border-color:var(--red)}
.contact-card.primary .eyebrow{color:#e2c49a}
.contact-card p{font-size:12px;line-height:2;color:var(--muted);margin:0}
.contact-card.primary p{color:#eeddbf}
.contact-number{font-family:"STSong","SimSun",serif;font-size:clamp(26px,2.8vw,38px);letter-spacing:2px;color:var(--red);line-height:1.3}
.contact-card.primary .contact-number{color:#f7e5c6}
.contact-number.small{font-size:30px}
.contact-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:8px}
.contact-card .button{background:#f7e5c6;color:var(--red);border-color:#f7e5c6}
.contact-card .ghost{background:none;border:1px solid #b99a6b;color:var(--dark);padding:13px 18px;font-size:12px}
.contact-card.primary .ghost{border-color:#e2c49a;color:#f7e5c6}
.contact-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.contact-list li{font-size:12px;line-height:1.9;color:var(--muted)}
.contact-list strong{display:block;color:var(--dark);font-weight:500;font-size:13px}
.contact-prep{display:grid;grid-template-columns:.9fr 1.1fr;gap:8%;margin-top:64px;border-top:1px solid #ded2c0;padding-top:48px}
.prep-list{list-style:none;padding:0;margin:0;display:grid;gap:18px}
.prep-list li{display:flex;gap:16px;align-items:flex-start}
.prep-list span{font-family:serif;color:var(--gold);font-size:20px;line-height:1.4}
.prep-list strong{font-size:14px;font-weight:500}
.prep-list p{margin:2px 0 0;font-size:12px;line-height:1.9;color:var(--muted)}
.copy-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,12px);background:#422b26;color:#f6f0e4;font-size:12px;padding:12px 20px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;z-index:30}
.copy-toast.show{opacity:1;transform:translate(-50%,0)}

@media(max-width:950px){
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-grid{grid-template-columns:repeat(3,1fr)}
  .contact-grid{grid-template-columns:1fr 1fr}
  .contact-prep{grid-template-columns:1fr;gap:24px}
  .product-feature{grid-template-columns:1fr}
  .viewer-layout{grid-template-columns:1fr}
  .viewer-embed{height:620px}
  .exp-layout{grid-template-columns:1fr}
  .doc{grid-template-columns:1fr;gap:24px}
  .doc-toc{position:static;border-left:0;border-bottom:1px solid #d9cbb6;padding:0 0 14px}
  .photo-strip{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:620px){
  .product-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .photo-pair{grid-template-columns:1fr}
  .viewer-embed{height:540px}
  #product-dialog .detail-grid{grid-template-columns:1fr}
  #product-dialog .detail-media,#product-dialog .detail-media img{min-height:260px}
  .page-hero{display:block;padding:44px 7% 30px}
  .page-body{padding:36px 7% 70px}
  .stage-wrap{min-height:420px}
}