/* V3 shares Yungang's blue identity across a complete browsing journey. */
.header{height:90px}.brand small{font-size:12px}.header nav a[aria-current=page]:after{transform:scaleX(1)}
.hero-media{height:clamp(300px,46svh,540px);grid-template-columns:2.7fr 1fr}.hero-copy{padding-top:40px;padding-bottom:16px}.hero h1{font-weight:500}.hero-side>img{object-position:60% center}.hero-intro p{max-width:29ch}
.scene-chapters{display:flex;gap:8px}.scene-chapters button{color:#b9c9ff;background:none;padding:8px 15px;font-size:15px;border-radius:30px;transition:background .2s,color .2s}.scene-chapters button[aria-pressed=true]{background:white;color:var(--blue)}.scene-chapters button:hover{color:white;background:#244ccb}.scene-bottom{padding-top:12px;padding-bottom:12px}.frame-caption{background:rgba(15,24,37,.92)}
.service-bridge{display:grid;grid-template-columns:1fr 1fr;background:var(--blue);color:white;overflow:hidden}.service-bridge>div{padding:85px var(--gutter)}.service-bridge h2{font-size:clamp(36px,4.6vw,70px);white-space:pre-line;max-width:15ch}.service-bridge p{font-size:21px;max-width:35ch;margin:30px 0 35px}.service-bridge>img{width:100%;height:100%;object-fit:cover;min-height:520px}.footer-nav{display:flex;flex-wrap:wrap;gap:28px;margin-top:60px}.footer-nav .text-link{font-size:15px}.footer-bottom{margin-top:35px}footer{background:#101c36}.footer-nav a:hover,.footer-bottom a:hover{color:#a8c0ff}
.page-intro{padding:80px var(--gutter) 70px;display:grid;grid-template-columns:1.3fr 1fr;gap:9%;align-items:end;background:#edf1f7}.page-intro h1{font-size:clamp(48px,5.9vw,88px);white-space:pre-line;max-width:17ch}.page-intro p{font-size:clamp(19px,1.6vw,24px);line-height:1.5;max-width:34ch;padding-bottom:5px}.blue-intro{background:var(--blue);color:white}
.section-block{padding:90px var(--gutter)}.section-top{display:flex;align-items:end;justify-content:space-between;gap:8%;margin-bottom:50px}.section-top h2{font-size:clamp(38px,4.4vw,66px);max-width:18ch}.section-top p{max-width:30ch;font-size:20px}.about-mosaic{display:grid;grid-template-columns:1.05fr 1fr;background:#fff}.about-mosaic>img{width:100%;height:100%;min-height:580px;object-fit:cover}.about-mosaic>div{padding:70px 8%}.about-mosaic h2{font-size:clamp(38px,4.1vw,64px)}.about-mosaic p{font-size:21px;margin-top:30px;line-height:1.65}.about-facts{display:flex;gap:50px;margin-top:45px;flex-wrap:wrap}.about-facts strong{display:block;font-size:42px;letter-spacing:-.05em;font-weight:500}.about-facts span{font-size:16px}.equipment-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:50px 25px}.equipment-grid img{width:100%;aspect-ratio:1.35;object-fit:cover;background:#e9edf3}.equipment-grid h3{font-size:27px;letter-spacing:-.025em;margin:23px 0 13px;line-height:1.12}.equipment-grid p{font-size:18px;line-height:1.6;color:#505a68}.history{background:#e7edf7;display:grid;grid-template-columns:1fr 1.25fr;gap:8%}.history>div:first-child h2{font-size:clamp(38px,4.6vw,70px);max-width:11ch}.history>div:first-child p{margin-top:24px}.history-list article{display:grid;grid-template-columns:100px 1fr;gap:30px;margin-bottom:35px;align-items:start}.history-list strong{font-size:40px;font-weight:500;line-height:1}.history-list p{font-size:19px}.history-list .small-note{font-size:14px;color:#576476;margin-top:50px}
.service-material{display:grid;grid-template-columns:1fr 1fr;gap:10%;align-items:center}.service-material h2{font-size:clamp(38px,4.4vw,65px)}.service-material p{font-size:22px;margin:30px 0;line-height:1.6}.service-material img{width:100%;aspect-ratio:1;object-fit:cover}.process{background:#e7edf5}.process-layout{display:grid;grid-template-columns:1fr 1fr;gap:8%}.process-visual{position:sticky;top:35px;align-self:start}.process-visual img{width:100%;aspect-ratio:1.25;object-fit:cover}.process-visual h3{white-space:pre-line;font-size:36px;margin-top:30px}.process-steps details{padding:22px 0}.process-steps summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:30px;letter-spacing:-.03em;cursor:pointer}.process-steps summary::-webkit-details-marker{display:none}.process-steps summary>span:last-child{font-size:30px;color:var(--blue);transition:transform .25s}.process-steps details[open] summary>span:last-child{transform:rotate(45deg)}.process-steps details p{font-size:19px;line-height:1.7;margin-top:20px;max-width:42ch;color:#4a5665}.prepare{display:grid;grid-template-columns:1fr 1fr;gap:8%;background:#fff}.prepare h2{font-size:clamp(38px,4.4vw,65px);max-width:15ch}.prepare p{font-size:21px;line-height:1.6;margin-bottom:30px}
/* The library is a working browsing interface, with explicit filters and pagination. */
.product-library{padding:45px var(--gutter) 80px;background:#f5f6f8}.search-row{max-width:900px;margin-bottom:45px}.search-row>label{display:block;font-size:16px;margin-bottom:12px}.search-row>div{display:flex;gap:12px}.search-row input{flex:1;min-width:0;background:white;border:1px solid #aab3c0;padding:15px 20px;border-radius:6px;font:inherit}.library-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:45px}.filters{align-self:start;position:sticky;top:30px}.filters h2{font-size:23px;letter-spacing:-.025em;margin-bottom:18px}.filters button{width:100%;background:transparent;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:13px 12px;border-radius:4px;gap:8px;color:#25354d;font-size:16px;line-height:1.3}.filters button:hover{background:#e3e9f2}.filters button[aria-pressed=true]{background:var(--blue);color:white}.filters small{font-size:12px;opacity:.7}.filters label{display:block;font-size:14px;margin:26px 0 10px}.filters select{width:100%;font:inherit;font-size:15px;padding:12px 9px;border:1px solid #aab3c0;border-radius:4px;background:white;color:var(--ink)}.filters .text-link{margin-top:18px;justify-content:start}.results-top{display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:15px;margin-bottom:20px;scroll-margin-top:30px}.results-top>span{color:#657080}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.product-card{padding:0;text-align:left;background:#fff;color:var(--ink);display:flex;flex-direction:column;min-width:0;transition:transform .25s}.product-card:hover{transform:translateY(-5px)}.catalog-image{height:235px;padding:25px;overflow:hidden;background:white}.catalog-image img{width:100%;height:100%;object-fit:contain;transition:transform .5s}.product-card:hover img{transform:scale(1.06)}.catalog-copy{padding:18px 20px 25px;position:relative;flex:1}.catalog-copy>span:first-child{font-size:13px;color:#667180}.catalog-copy h3{font-size:21px;line-height:1.2;letter-spacing:-.025em;margin:8px 0 12px;overflow-wrap:anywhere;max-width:90%}.catalog-copy p{font-size:13px;color:#667180;max-width:90%}.card-arrow{position:absolute;right:15px;bottom:20px;font-size:22px;color:var(--blue)}.pagination{display:flex;justify-content:space-between;align-items:center;margin-top:40px;gap:15px;font-size:15px}.plain{background:#e4eaf3;color:var(--ink)}button:disabled{opacity:.4;cursor:default}.empty-results{grid-column:1/-1;min-height:360px;padding:65px 30px;background:#e9eef6;display:flex;flex-direction:column;align-items:start;gap:25px}.empty-results h2{font-size:35px}.empty-results p{max-width:45ch}.dialog-open{overflow:hidden}dialog{border:0;padding:0;width:min(1080px,94vw);max-height:92svh;color:var(--ink);background:#fff}dialog::backdrop{background:rgba(9,18,37,.65);backdrop-filter:blur(5px)}.close-dialog{position:absolute;right:18px;top:14px;width:44px;height:44px;background:#e6ecf4;border-radius:50%;font-size:30px;z-index:2;color:var(--ink)}#detail-content{display:grid;grid-template-columns:1fr 1fr}.detail-image{padding:50px;background:#f1f3f7;min-height:560px;display:flex;align-items:center;justify-content:center}.detail-image img{width:100%;height:440px;object-fit:contain;mix-blend-mode:multiply}.detail-info{padding:65px 40px 45px}.detail-info>p:first-child{font-size:15px;color:#667180}.detail-info h2{font-size:36px;line-height:1.1;letter-spacing:-.035em;margin:14px 0 28px}.detail-info dl>div{display:grid;grid-template-columns:105px 1fr;gap:14px;margin:18px 0;font-size:15px}.detail-info dt{color:#667180}.detail-info dd{margin:0}.detail-note{font-size:14px;color:#667180;margin:28px 0}.detail-info>.text-link{display:block;font-size:14px;margin-top:24px;width:fit-content}
.news-list{padding-top:10px}.news-row{display:flex;justify-content:space-between;align-items:center;gap:8%;padding:50px 25px;margin-top:15px;transition:background .25s}.news-row:hover{background:#e6edf7}.news-row h2{font-size:clamp(28px,3.1vw,46px);max-width:25ch;line-height:1.15}.news-row p{font-size:14px;color:#667180;margin-bottom:18px}.news-row>span{flex-shrink:0;font-size:16px;color:var(--blue)}
.contact-workspace{display:grid;grid-template-columns:1fr 1.2fr;gap:8%;background:#fff}.contact-address h2{font-size:42px;margin-bottom:28px}.contact-address>a{display:block;font-size:24px;line-height:1.7;color:var(--blue)}.contact-address p{margin-top:25px;font-size:18px;line-height:1.65;max-width:32ch}.contact-address img{width:100%;aspect-ratio:1.6;object-fit:cover;margin-top:35px}.inquiry-form label{display:flex;flex-direction:column;gap:12px;font-size:15px;margin-bottom:25px}.form-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}.inquiry-form input,.inquiry-form textarea{width:100%;min-width:0;padding:15px;font:inherit;border:1px solid #aab3c0;border-radius:4px;color:var(--ink);background:#f9fafc}.inquiry-form textarea{resize:vertical;min-height:160px}.form-note{font-size:14px;color:#657080;line-height:1.6;margin-bottom:25px}.form-actions{display:flex;gap:15px;flex-wrap:wrap}#form-status{font-size:14px;margin-top:20px;color:var(--blue)}
.enter{opacity:0;transform:translateY(25px);transition:opacity .7s,transform .7s}.enter.entered{opacity:1;transform:none}.button:hover{transform:translateY(-2px)}
html[lang=zh] .page-intro h1{font-size:clamp(42px,5.2vw,76px)}html[lang=zh] .page-intro p{max-width:26ch}html[lang=zh] .equipment-grid h3{font-size:25px}html[lang=zh] .service-bridge h2{font-size:clamp(36px,4.2vw,62px)}
@media(min-width:1700px){.header,.section-block,.page-intro,.product-library{padding-left:max(var(--gutter),calc((100vw - 1600px)/2));padding-right:max(var(--gutter),calc((100vw - 1600px)/2))}}
@media(max-width:1100px){.library-layout{grid-template-columns:205px minmax(0,1fr);gap:25px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-image{height:230px}.header nav{font-size:13px}.header{gap:15px}.brand small{font-size:10px}.equipment-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.about-mosaic>div{padding:45px 8%}.about-mosaic>img{min-height:500px}.about-facts{gap:20px}.about-facts strong{font-size:32px}.page-intro{gap:6%}.contact-workspace{gap:6%}.contact-address>a{font-size:20px}.detail-info{padding:65px 28px 35px}.service-bridge>div{padding:60px var(--gutter)}}
@media(max-width:900px){.header{height:80px}.header nav{top:80px;font-size:22px}.page-intro{padding-top:60px;padding-bottom:55px}.page-intro h1{font-size:52px}.page-intro p{font-size:19px}.section-block{padding-top:65px;padding-bottom:65px}.section-top{gap:30px}.about-mosaic{grid-template-columns:1fr}.about-mosaic>img{min-height:0;height:400px}.about-mosaic>div{padding:45px var(--gutter)}.history{grid-template-columns:1fr;gap:45px}.history>div:first-child h2{max-width:none}.history-list article{grid-template-columns:100px 1fr}.service-material{gap:5%}.service-material p{font-size:19px}.service-bridge{grid-template-columns:1fr}.service-bridge>img{min-height:0;height:300px}.service-bridge h2{max-width:none}.service-bridge p{max-width:40ch}.process-layout{gap:5%}.process-steps summary{font-size:25px}.process-visual h3{font-size:30px}.contact-workspace{grid-template-columns:1fr;gap:55px}.contact-address img{max-width:600px;height:280px}.contact-address h2{font-size:38px}.contact-address>a{font-size:24px}.news-row{padding:35px 0}.news-row>span{font-size:14px}.detail-image{padding:25px;min-height:500px}.detail-image img{height:350px}.detail-info h2{font-size:30px}}
@media(max-width:600px){.header{height:76px}.header nav{top:76px}.brand small{font-size:9px}.hero-media{height:34svh;min-height:250px;grid-template-columns:1fr}.hero-copy{padding-top:30px}.hero-intro p{max-width:34ch}.page-intro{grid-template-columns:1fr;gap:28px;padding:45px var(--gutter)}.page-intro h1{font-size:48px;max-width:17ch;line-height:1.04}.page-intro p{font-size:18px;max-width:34ch}.section-block{padding:50px var(--gutter)}.section-top{display:block;margin-bottom:30px}.section-top h2{font-size:38px;max-width:17ch}.section-top p{margin-top:24px;font-size:18px}.about-mosaic>img{height:280px}.about-mosaic p{font-size:18px}.about-mosaic h2{font-size:38px}.about-facts{gap:35px}.about-facts strong{font-size:32px}.equipment-grid{gap:35px 15px}.equipment-grid img{aspect-ratio:1}.equipment-grid h3{font-size:21px}.equipment-grid p{font-size:15px}.history-list article{grid-template-columns:70px 1fr;gap:20px}.history-list strong{font-size:30px}.history-list p{font-size:17px}.service-material{grid-template-columns:1fr;gap:35px}.service-material img{aspect-ratio:1.35}.process-layout{grid-template-columns:1fr;gap:30px}.process-visual{position:static}.process-visual img{aspect-ratio:1.6}.process-visual h3{display:none}.process-steps summary{font-size:25px}.process-steps details p{font-size:17px}.prepare{grid-template-columns:1fr;gap:30px}.prepare p{font-size:18px}.service-bridge>div{padding:50px var(--gutter)}.service-bridge h2{font-size:36px;max-width:15ch}.service-bridge p{font-size:18px}.service-bridge>img{height:230px}.scene-chapters{gap:0}.scene-chapters button{padding:8px 9px;font-size:12px}.scene-bottom>a{display:none}.scene-bottom{justify-content:center}.scene.is-live .frame-caption{bottom:12svh}.footer-nav{gap:20px;margin-top:40px}.footer-nav .text-link{font-size:14px}.product-library{padding:30px var(--gutter) 50px}.search-row{margin-bottom:30px}.search-row>div{gap:8px}.search-row input{padding:12px;font-size:15px}.search-row .button{padding:12px 17px}.library-layout{display:block}.filters{position:static;margin-bottom:30px}.filters h2{font-size:21px}.filters #category-filters{display:grid;grid-template-columns:1fr 1fr;gap:5px}.filters button{font-size:14px;padding:12px 10px;min-height:48px}.filters small{font-size:11px}.filters label{margin-top:18px}.filters select{font-size:15px}.filters .text-link{margin-top:10px;min-height:40px}.results-top>span{display:none}.product-grid{gap:12px}.catalog-image{height:160px;padding:18px}.catalog-copy{padding:14px 12px 25px}.catalog-copy h3{font-size:17px;max-width:100%}.catalog-copy p{font-size:11px}.catalog-copy>span:first-child{font-size:11px}.card-arrow{right:10px;bottom:10px;font-size:18px}.pagination .button{padding:12px;font-size:13px}.pagination{font-size:13px;gap:8px}.empty-results{padding:35px 22px}.empty-results h2{font-size:30px}#detail-content{display:block}.detail-image{min-height:0;padding:30px;height:290px}.detail-image img{height:230px}.detail-info{padding:30px 25px}.detail-info h2{font-size:29px}.detail-info dl>div{grid-template-columns:90px 1fr;gap:10px}.close-dialog{right:12px;top:12px}.news-row{display:block}.news-row h2{font-size:29px}.news-row>span{display:block;margin-top:20px}.form-pair{grid-template-columns:1fr;gap:0}.contact-address>a{font-size:22px}.contact-address img{height:220px}.form-actions{gap:10px}.form-actions .button{font-size:14px}html[lang=zh] .page-intro h1{font-size:42px}html[lang=zh] .equipment-grid h3{font-size:20px}html[lang=zh] .service-bridge h2{font-size:34px}}
@media(prefers-reduced-motion:reduce){.enter{opacity:1;transform:none}.product-card:hover,.button:hover{transform:none}.catalog-image img{transition:none}}
.header nav .mobile-contact,#filter-toggle{display:none}.catalog-copy h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@media(max-width:900px){.header nav .mobile-contact{display:block}}
@media(max-width:600px){#filter-toggle{display:flex;background:#e3eaf5;color:var(--blue);font-size:16px;padding:14px;min-height:50px}.filters{margin-bottom:22px}#filter-controls{display:none;padding-top:24px}.filters.expanded #filter-controls{display:block}}