:root{--white:#fff;--surface:#f5f5f7;--ink:#1d1d1f;--muted:#626266;--line:#d2d2d7;--blue:#0071e3;--blue-hover:#0066cc;--radius:20px;--z-header:10;--z-toast:30;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--white);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{margin:0;line-height:1.5;-webkit-font-smoothing:antialiased}body:has(dialog[open]){overflow:hidden}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}img{display:block;max-width:100%;color:var(--muted)}figure,p,h1,h2,h3{margin:0}h1,h2,h3{text-wrap:balance;letter-spacing:-.035em}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--blue);outline-offset:4px}button[hidden],[hidden]{display:none!important}.container{max-width:1120px;margin:0 auto;width:calc(100% - 104px)}.skip-link{position:fixed;top:-80px;left:20px;z-index:50;padding:12px 20px;background:var(--blue);color:white;border-radius:6px}.skip-link:focus{top:8px}
.site-header{position:sticky;top:0;z-index:var(--z-header);background:rgba(255,255,255,.97);border-bottom:1px solid #f0f0f2}.nav-shell{height:58px;max-width:1240px;width:calc(100% - 104px);margin:auto;display:flex;align-items:center;justify-content:space-between;gap:32px}.wordmark{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;letter-spacing:.08em;font-size:21px;font-weight:650}.wordmark-cn{font-size:19px;letter-spacing:.06em}.nav-links{display:flex;gap:48px;font-size:13px}.nav-links a{padding:17px 0}.nav-links a:hover,.contact-link:hover,.text-link:hover{color:var(--blue)}.nav-tools{display:flex;align-items:center;gap:20px}.icon-button{background:transparent;border:0;padding:8px;display:inline-flex;align-items:center;justify-content:center;min-height:40px;min-width:40px}.menu-toggle{display:none}.mobile-menu{padding:12px 24px 20px;background:white;border-top:1px solid var(--line)}.mobile-menu a{display:block;padding:12px;font-size:17px}
.hero-copy{padding:36px 20px 30px;text-align:center}.hero h1{font-size:clamp(42px,4.6vw,64px);font-weight:650;line-height:1.15}.hero-copy>p{font-size:20px;font-weight:400;color:var(--muted);margin:18px 0 20px;letter-spacing:-.02em}.hero-actions{display:flex;justify-content:center;gap:24px}.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:999px;padding:11px 26px;min-height:44px;font-size:14px;font-weight:500;line-height:1.45;transition:background .2s,color .2s,transform .2s;white-space:nowrap}.button.primary{background:var(--blue);color:white}.button.primary:hover{background:var(--blue-hover)}.button.secondary{background:transparent;border-color:var(--blue);color:var(--blue)}.button.secondary:hover{background:var(--blue);color:white}.button:active{transform:scale(.98)}.hero-image{width:100%;height:auto;aspect-ratio:3.1;object-fit:cover;object-position:center 57%}.hero-figure figcaption{text-align:center;padding:12px 20px 14px;font-size:11px;color:var(--muted)}
.section{padding:94px 0}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:32px}.section-heading h2{font-size:clamp(36px,4vw,52px);font-weight:650;line-height:1.18}.section-heading>p{font-size:18px;color:var(--muted);padding-bottom:5px}.catalog{background:var(--surface)}.catalog-controls{margin-top:34px;display:flex;gap:20px;justify-content:space-between;align-items:center}.filter-group{display:flex;gap:8px;flex-wrap:wrap}.filter{border:1px solid var(--line);background:transparent;border-radius:999px;padding:9px 18px;font-size:14px;min-height:42px;white-space:nowrap}.filter:hover{border-color:var(--blue);color:var(--blue)}.filter.active{background:var(--blue);color:white;border-color:var(--blue)}.search-field{position:relative;display:flex;align-items:center;min-width:250px;width:280px;border:1px solid var(--line);border-radius:999px;padding:0 14px;gap:8px;min-height:44px;color:var(--muted)}.search-field input{min-width:0;width:100%;border:0;background:transparent;outline:none!important;font-size:14px;color:var(--ink);padding:10px 0}.search-field input::-webkit-search-cancel-button{display:none}.search-field:focus-within{outline:3px solid #0071e34d;outline-offset:2px;border-color:var(--blue)}.search-field input::placeholder{color:var(--muted)}.search-field .icon-button{margin-right:-8px;min-width:28px;min-height:28px;padding:4px}.result-summary{font-size:12px;color:var(--muted);margin:16px 0 18px;min-height:18px}.material-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.material-card{border-radius:var(--radius);overflow:hidden;background:white;transition:transform .3s cubic-bezier(.2,.8,.2,1),box-shadow .3s}.material-card:hover{transform:translateY(-4px);box-shadow:0 10px 25px #00000008}.material-open{display:block;border:0;width:100%;padding:0;text-align:left;background:transparent;border-radius:inherit}.material-open:focus-visible{outline-offset:-4px}.material-image{width:100%;aspect-ratio:4/5;object-fit:cover;background:#ececee}.material-meta{position:relative;padding:18px 18px 20px}.material-series{font-size:12px;color:var(--muted);margin-bottom:5px}.material-name{font-size:20px;font-weight:600;letter-spacing:-.025em;padding-right:26px;line-height:1.35}.material-code{font-size:12px;color:var(--muted);margin-top:5px}.card-plus{position:absolute;right:17px;top:40px;width:29px;height:29px;border:1px solid #b3b3ba;border-radius:50%;display:flex;align-items:center;justify-content:center}.card-plus svg{width:18px;height:18px;stroke-width:1.4}.load-more-row{display:flex;align-items:center;gap:26px;justify-content:center;margin-top:32px}.load-more-row>span{height:1px;background:var(--line);flex:1}.load-more-row .button{padding:11px 30px}.catalog-note{text-align:center;font-size:11px;color:var(--muted);margin-top:24px}.empty-results{text-align:center;padding:55px 10px}.empty-results h3{font-size:23px}.empty-results p{font-size:14px;color:var(--muted);margin:12px 0 22px}
.space-heading{margin-bottom:34px}.scene-tabs{display:flex;background:var(--surface);border-radius:999px;padding:4px;flex-shrink:0}.scene-tabs button{border:0;background:transparent;border-radius:999px;min-width:92px;min-height:40px;padding:8px 22px;font-size:14px}.scene-tabs [aria-selected=true]{background:var(--ink);color:white}.scene-panel{max-width:1400px;margin:auto;width:calc(100% - 48px)}#scene-image{width:100%;height:auto;aspect-ratio:2.8;object-fit:cover;object-position:center 57%;animation:scene-in .5s ease-out}.scene-caption{border-top:1px solid var(--line);margin-top:14px;padding:20px 32px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}.scene-caption h3{font-size:29px;line-height:1.3;font-weight:600}.scene-materials{display:flex;gap:22px;align-items:center;flex-wrap:wrap}.scene-material{display:flex;gap:10px;align-items:center;border:0;padding:0;background:none;font-size:12px}.scene-material img{width:42px;height:42px;object-fit:cover;border-radius:50%;border:1px solid #ddd}.scene-material:hover{color:var(--blue)}.scene-note{font-size:11px;color:var(--muted);text-align:right;margin:12px 32px 0}.about{background:var(--surface);padding:65px 0}.about-inner{display:grid;grid-template-columns:1fr 1fr;gap:70px}.about-copy h2{font-size:24px;font-weight:600;margin-bottom:12px}.about-copy p{font-size:14px;line-height:1.9}.contact-copy h2{font-size:36px;line-height:1.2;font-weight:600;margin-bottom:24px}.contact-link{display:inline-flex;align-items:center;gap:3px;font-size:13px;color:var(--blue);margin-left:20px}.contact-link svg,.text-link svg{width:14px;height:14px}.site-footer{background:var(--surface);font-size:11px;color:var(--muted);padding:0 0 28px}.site-footer .container{border-top:1px solid var(--line);padding-top:22px}.footer-brand{display:flex;align-items:center;gap:20px}.footer-brand .wordmark{font-size:17px;color:var(--ink)}.footer-brand .wordmark-cn{font-size:16px}.footer-brand>span{border-left:1px solid var(--line);padding-left:20px}.site-footer p{margin-top:12px}
dialog{border:0;padding:0;border-radius:24px;color:var(--ink);background:white;box-shadow:0 30px 100px #0003;max-height:90dvh;max-width:calc(100% - 36px)}dialog::backdrop{background:rgba(0,0,0,.45);animation:scene-in .2s ease-out}dialog[open]{animation:dialog-in .25s cubic-bezier(.2,.8,.2,1)}.close-button{border:0;background:#efeff2;color:#545458;border-radius:50%;width:34px;height:34px;display:flex;justify-content:center;align-items:center}.close-button svg{width:20px;height:20px}.close-button:hover{background:#e0e0e5}.text-link{border:0;background:none;color:var(--blue);padding:16px 0 0;display:flex;align-items:center;justify-content:center;gap:3px;font-size:13px;margin:auto}#image-dialog{width:min(1000px,94vw);background:var(--ink);overflow:auto}#image-dialog>.close-button{position:sticky;top:16px;float:right;margin:16px 16px -50px 0;z-index:1}#zoom-image{width:100%;height:auto}.noscript-message{padding:30px;text-align:center;background:var(--surface)}
.nav-shell{max-width:1422px}.container{max-width:1360px}.material-image{height:auto}
@keyframes scene-in{from{opacity:.65}to{opacity:1}}@keyframes dialog-in{from{opacity:.4;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1600px){.hero-copy{padding-top:48px;padding-bottom:36px}.hero h1{font-size:72px}.hero-copy>p{font-size:22px}.hero-image{max-height:600px}}
@media(min-width:1200px){.nav-shell{height:72px}.wordmark{font-size:24px}.wordmark-cn{font-size:22px}.nav-links{font-size:15px;gap:56px}.hero-copy{padding:34px 20px 40px}.hero h1{font-size:72px}.hero-copy>p{font-size:22px}.hero-actions{gap:32px}.hero-actions .button{font-size:16px;min-width:156px}.hero-actions .button.secondary{min-width:172px}.hero-figure figcaption{font-size:12px}.section-heading h2{font-size:64px}.catalog{padding:50px 0}.material-name{font-size:23px}.material-meta{padding:20px 22px}.material-series,.material-code{font-size:13px}.card-plus{right:20px;top:44px}}
@media(max-width:1100px){.container{width:calc(100% - 64px)}.nav-shell{width:calc(100% - 64px)}.nav-links{gap:28px}.catalog-controls{align-items:flex-start}.filter-group{gap:6px}.filter{padding:9px 14px}.search-field{min-width:220px;width:240px}.material-grid{gap:16px}.material-meta{padding:16px}.material-name{font-size:18px}.card-plus{right:12px}.section-heading>p{font-size:16px}.scene-tabs button{min-width:76px;padding:8px 18px}.scene-materials{gap:12px}.scene-caption h3{font-size:25px}}
@media(max-width:800px){.container{width:calc(100% - 48px)}.nav-shell{width:calc(100% - 48px);height:54px;gap:16px}.wordmark{font-size:18px}.wordmark-cn{font-size:16px}.nav-links{gap:20px;font-size:12px}.nav-tools{gap:8px}.hero h1{font-size:50px}.hero-copy{padding-top:42px;padding-bottom:32px}.hero-copy>p{font-size:18px}.hero-image{aspect-ratio:2.3}.section{padding:70px 0}.section-heading h2{font-size:38px}.catalog-controls{flex-direction:column;gap:16px}.search-field{width:100%;min-width:0}.material-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.material-image{aspect-ratio:1}.material-name{font-size:21px}.space-heading{align-items:flex-start;flex-direction:column;gap:24px}#scene-image{aspect-ratio:1.8}.scene-caption{padding:18px 0 0;flex-direction:column;align-items:flex-start;gap:18px}.scene-caption h3{font-size:27px}.scene-note{text-align:left;margin:16px 0 0}.about-inner{gap:35px}.contact-copy h2{font-size:30px}.contact-link{display:flex;margin:16px 0 0}.section-heading>p{display:none}}
@media(max-width:600px){html{scroll-padding-top:72px}.container,.nav-shell{width:calc(100% - 40px)}.nav-links{display:none}.nav-tools{gap:3px}.menu-toggle{display:inline-flex}.wordmark{font-size:16px;gap:7px}.wordmark-cn{font-size:15px}.nav-tools>.icon-button{min-width:34px;padding:6px}.nav-tools svg{width:19px;height:19px}.hero-copy{padding:36px 14px 30px}.hero h1{font-size:42px;letter-spacing:-.045em;line-height:1.2}.hero-copy>p{font-size:16px;margin:16px 0 21px}.hero-actions{gap:12px}.hero-actions .button{padding:10px 20px;font-size:13px}.hero-image{aspect-ratio:1.25;object-position:57% center}.hero-figure figcaption{font-size:10px;padding:12px 10px}.section{padding:58px 0}.section-heading h2{font-size:34px;line-height:1.22;letter-spacing:-.04em}.catalog-controls{margin-top:26px}.filter-group{gap:7px;flex-wrap:nowrap;overflow-x:auto;width:calc(100% + 20px);padding:2px 20px 6px 0}.filter{font-size:12px;padding:8px 15px;min-height:38px}.search-field{min-height:42px}.search-field input{font-size:13px}.result-summary{margin:13px 0 16px;font-size:11px}.material-grid{gap:12px}.material-card{border-radius:15px}.material-image{aspect-ratio:4/5}.material-meta{padding:13px 12px 15px}.material-series{font-size:10px}.material-name{font-size:16px;padding-right:18px;line-height:1.4}.material-code{font-size:10px;margin-top:3px}.card-plus{width:23px;height:23px;right:10px;top:33px}.card-plus svg{width:15px;height:15px}.load-more-row{margin-top:25px;gap:15px}.load-more-row .button{font-size:13px;padding:10px 22px}.catalog-note{font-size:10px;line-height:1.8;margin-top:22px}.scene-panel{width:calc(100% - 28px)}.scene-tabs{width:100%;max-width:330px}.scene-tabs button{min-width:0;flex:1;padding:8px 20px}.space-heading{margin-bottom:24px}#scene-image{aspect-ratio:1.25;object-position:57% center}.scene-caption{padding:18px 6px 0}.scene-caption h3{font-size:24px}.scene-material{font-size:11px}.scene-material img{width:34px;height:34px}.scene-note{margin:16px 6px 0;font-size:10px}.about{padding:42px 0}.about-inner{grid-template-columns:1fr;gap:42px}.about-copy h2{font-size:22px}.about-copy p{font-size:13px}.contact-copy h2{font-size:32px;margin-bottom:21px}.contact-link{display:inline-flex;margin:0 0 0 14px}.footer-brand{align-items:flex-start;gap:14px;flex-direction:column}.footer-brand>span{border:0;padding:0;font-size:10px}.site-footer p{font-size:10px}.site-footer .container{padding-top:22px}dialog{max-width:calc(100% - 24px);max-height:92dvh;border-radius:20px}}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.material-card:hover{transform:none}}