/* CHANGFU — a product-first, monochrome visual system. */
:root{--ink:#1d1d1f;--muted:#6e6e73;--cream:#f5f5f7;--line:#dedee3;--blue:#0071e3}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;-webkit-font-smoothing:antialiased;letter-spacing:-.015em;background:#fff}
.announcement{background:#f5f5f7;color:#6e6e73;font-size:11px;letter-spacing:.02em;padding:12px}.announcement span{display:none}
header{position:sticky;top:0;z-index:5;height:64px;padding:0 max(6%,calc((100vw - 1200px)/2));background:#ffffffd9;backdrop-filter:blur(22px);border-bottom:1px solid #00000009;max-width:none}.brand{font-size:19px;letter-spacing:2px}.brand span{font-size:6px;letter-spacing:1.6px}nav{font-size:12px;gap:34px}nav a:hover{color:var(--blue)}.cart-button{font-size:12px}.cart-button span{width:19px;height:19px;font-size:10px}
main{max-width:none}.hero{display:flex;flex-direction:column;align-items:center;min-height:0;background:linear-gradient(180deg,#fff 0%,#fafafa 80%,#f5f5f7 100%);text-align:center;overflow:hidden}.hero-copy{padding:66px 24px 0;z-index:1}.eyebrow{letter-spacing:.08em;font-size:11px;color:var(--muted);font-weight:600}.hero h1{font-family:inherit;font-size:clamp(52px,5.7vw,82px);font-weight:650;letter-spacing:-.065em;line-height:1.04;margin:20px 0}.hero p{font-size:19px;line-height:1.5;color:var(--muted);letter-spacing:-.025em}.button{border-radius:30px;gap:15px;padding:14px 24px;font-size:14px;font-weight:400;transition:background .2s,transform .2s}.dark{background:var(--blue);color:#fff}.button:hover{filter:none;background:#0077ed;transform:translateY(-1px)}.hero .button{margin-top:6px}.hero-foot{display:none}.hero-art{width:min(900px,100%);height:390px;background:none;overflow:visible;margin-top:-20px}.hero-art>svg{height:100%;width:100%;filter:grayscale(1) drop-shadow(0 20px 20px #0000000a)}.art-label{display:none}.image-note{font-size:9px;right:30px;bottom:20px;color:#86868b}
.benefits{max-width:1120px;margin:0 auto;padding:32px 24px;border:0}.benefits div{padding-left:35px}.benefits b{font-size:13px;font-weight:600}.benefits span{font-size:11px;color:var(--muted)}
.section{max-width:1200px;margin:110px auto;padding:0 32px}.section h2{font-family:inherit;font-size:48px;line-height:1.1;letter-spacing:-.05em;font-weight:650;margin:15px 0 32px}.section-heading p{font-size:14px;max-width:280px;line-height:1.5;text-align:right;bottom:3px}.categories{gap:22px}.categories button,.categories button:nth-child(2),.categories button:nth-child(3){background:#f5f5f7;border-radius:26px;height:350px;padding:28px;transition:transform .3s,box-shadow .3s}.categories button:hover{transform:translateY(-5px);box-shadow:0 15px 35px #00000008}.category-num{font-size:10px;letter-spacing:.1em;color:#86868b;margin-bottom:15px}.categories strong{font-size:27px;letter-spacing:-.04em;font-weight:600}.categories small{font-size:12px;max-width:100%;margin-top:6px}.category-art{height:235px;width:90%;right:0;bottom:-3px;opacity:1}.category-art svg{filter:grayscale(.6)}.arrow{left:auto;right:22px;bottom:22px;display:grid;place-items:center;border-radius:50%;background:#e5e5ea;width:30px;height:30px;font-size:18px;z-index:1}
.products-section{max-width:none;background:#f5f5f7;padding:85px max(32px,calc((100vw - 1136px)/2));margin-bottom:0}.products-heading{gap:25px}.demo-note{font-size:10px;max-width:220px;line-height:1.6;text-align:right}.toolbar{border:0;margin:0 0 28px;align-items:center}.tabs{gap:3px;background:#e8e8ed;border-radius:30px;padding:4px}.tabs button{border-radius:22px;padding:10px 16px}.tabs .active{background:white;color:var(--ink);box-shadow:0 1px 6px #0000000d}.search-sort input,.search-sort select{border:1px solid #dedee3;border-radius:10px;padding:12px;background:#fff9}.search-sort input{width:210px}.product-grid{gap:20px;grid-template-columns:repeat(4,1fr)}.product-card{background:#fff;border-radius:22px;padding:14px 20px 22px;box-shadow:0 4px 15px #00000003;transition:transform .25s}.product-card:hover{transform:translateY(-4px)}.product-image{background:#fff;aspect-ratio:1;overflow:hidden;border-radius:14px}.product-image svg{filter:grayscale(.6);width:110%;height:110%}.badge{background:none;color:#99704a;font-size:8px;top:7px;left:0;padding:0;letter-spacing:.04em}.product-meta{font-size:10px;line-height:1.5;min-height:30px;margin-top:10px}.product-card h3{font-size:17px;font-weight:600;line-height:1.25;min-height:43px;letter-spacing:-.025em}.product-bottom{margin-top:18px}.price small{font-size:10px}.add{background:var(--blue);color:white;border:0;width:30px;height:30px}.add:hover{background:#0077ed}
.project{max-width:1136px;margin:95px auto;padding:65px;border-radius:30px;background:#08080a;color:#f5f5f7;grid-template-columns:1.2fr 1fr;overflow:hidden;position:relative}.project .eyebrow{color:#a1a1a6}.project h2{font-family:inherit;font-size:49px;font-weight:600;line-height:1.06;letter-spacing:-.045em;margin:22px 0}.project p{font-size:13px;line-height:1.7;color:#a1a1a6}.light{background:white;color:#1d1d1f}.light:hover{background:#e9e9ed}.project-right{border:0;padding:0 0 0 24px;position:relative}.project-right:before{content:"";position:absolute;width:250px;height:250px;border:1px solid #ffffff15;border-radius:50%;left:30px;background:radial-gradient(circle at 40% 30%,#41414650,transparent 70%);pointer-events:none}.project-right>span{color:#86868b;font-size:9px;letter-spacing:.2em}.project-right>div{font-size:23px;white-space:nowrap;z-index:1}.project-right i{font-size:17px;color:#727277;margin:0 7px}.project-right p{font-size:10px;z-index:1}
.about{padding-top:30px;padding-bottom:25px}.about h2{font-size:56px;line-height:1.08}.about p{max-width:670px;margin:auto;font-size:16px;line-height:1.65}.about .eyebrow{color:var(--blue)}footer{max-width:none;background:#f5f5f7;border:0;padding:42px max(32px,calc((100vw - 1136px)/2));gap:24px}footer .brand{font-size:17px}footer small{font-size:10px;line-height:1.6}
dialog{border-radius:24px;padding:36px;box-shadow:0 30px 100px #0003}dialog::backdrop{background:#0006;backdrop-filter:blur(10px)}dialog h2{font-size:28px;letter-spacing:-.04em;font-weight:600}.close{border-radius:50%;background:#eeeef0;width:32px;height:32px;display:grid;place-items:center;font-size:24px;right:15px;top:15px}.detail-art{border-radius:16px;background:#f5f5f7}.detail-art svg,.cart-row svg{filter:grayscale(.6)}label input,label select,label textarea,.detail-actions input{border-radius:10px}.cart-row svg{border-radius:10px}.quantity button{border-radius:50%}.remove{color:var(--blue)}#toast{border-radius:30px;box-shadow:0 6px 30px #0002;font-size:13px;text-align:center}button:focus-visible,a:focus-visible{outline-color:var(--blue)}
@media(max-width:1100px){.product-grid{grid-template-columns:repeat(3,1fr)}.toolbar{flex-wrap:wrap}.project{margin:70px 32px;padding:45px}.project h2{font-size:40px}.project-right>div{font-size:20px}.section-heading p{max-width:220px}.section h2{font-size:42px}}
@media(max-width:650px){header{height:86px;padding:13px 20px;flex-wrap:wrap}.brand{font-size:16px}.brand span{font-size:5px}nav{margin-top:14px;font-size:10px;gap:15px}.cart-button{font-size:11px}.announcement{font-size:9px}.hero-copy{padding:48px 20px 0}.hero h1{font-size:49px;letter-spacing:-.06em;margin:18px 0}.hero p{font-size:16px;line-height:1.5;max-width:320px}.hero p br{display:none}.hero .eyebrow{font-size:9px}.hero-art{height:295px;margin-top:-8px}.button{font-size:13px;padding:13px 21px}.image-note{bottom:12px;font-size:8px}.benefits{padding:28px 24px;gap:24px}.benefits div{padding-left:20px}.benefits b{font-size:11px}.benefits span{font-size:10px;line-height:1.4}.section{margin:65px 0;padding:0 20px}.section h2{font-size:35px;margin-bottom:22px}.section-heading p{text-align:left;max-width:none;font-size:13px;margin-bottom:24px}.categories{grid-template-columns:1fr;gap:15px}.categories button,.categories button:nth-child(2),.categories button:nth-child(3){height:265px;padding:26px;border-radius:22px}.categories strong{font-size:26px}.category-art{width:64%;height:235px;right:0;bottom:-4px}.categories small{max-width:45%;line-height:1.5}.category-num{margin-bottom:15px}.arrow{left:26px;right:auto;bottom:26px}.products-section{padding:55px 16px;margin-bottom:0}.products-heading .demo-note{text-align:left;max-width:none;margin:0 0 22px;font-size:9px}.tabs{width:100%;justify-content:space-between}.tabs button{font-size:10px;padding:9px 12px}.toolbar{gap:16px}.search-sort{width:100%}.search-sort input{width:55%;font-size:10px;padding:11px}.search-sort select{font-size:10px;max-width:110px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.product-card{padding:10px 12px 16px;border-radius:18px}.badge{font-size:6px}.product-meta{font-size:9px;min-height:28px}.product-card h3{font-size:14px;min-height:36px}.product-bottom{margin-top:15px}.price small{font-size:9px}.add{width:27px;height:27px}.project{margin:55px 16px;padding:35px 25px;grid-template-columns:1fr;border-radius:24px;gap:35px}.project h2{font-size:37px}.project p br{display:none}.project-right{padding:30px 0 10px;border-top:1px solid #ffffff20}.project-right:before{width:170px;height:170px;left:auto;right:-15px;top:-20px}.project-right>div{font-size:23px}.project-right p{font-size:9px}.about{padding-top:20px;padding-bottom:20px}.about h2{font-size:37px}.about p{font-size:14px;padding:0 8px}footer{padding:35px 25px;gap:18px}footer p{margin:0}dialog{padding:25px 20px}.detail-actions{gap:8px}.detail-actions .button{font-size:12px;flex:1;justify-content:center}.detail-actions input{width:65px}.cart-price{font-size:9px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

.contact{text-align:center;padding-top:15px;padding-bottom:15px}.contact h2{font-size:54px}.contact>p{color:var(--muted);font-size:16px;line-height:1.6;max-width:580px;margin:0 auto 30px}.contact-links{display:flex;justify-content:center;gap:20px}.contact-links a{background:#f5f5f7;border-radius:20px;padding:25px 35px;text-align:left;min-width:280px}.contact-links span{display:block;font-size:12px;color:var(--blue);margin-bottom:12px}.contact-links strong{font-size:21px;font-weight:500}.email-rfq{display:block;text-align:center;color:var(--blue);margin-top:20px}#service-dialog a{color:var(--blue)}.categories button{display:block}.categories strong,.categories small,.category-num{position:relative;z-index:1}.categories button{padding-top:28px;vertical-align:top}.category-num{margin-top:0}.categories{align-items:start}.categories button{display:flex;flex-direction:column;align-items:flex-start}.category-art{pointer-events:none}@media(max-width:650px){.contact h2{font-size:35px}.contact>p{font-size:14px}.contact-links{flex-direction:column;gap:12px}.contact-links a{min-width:0;padding:24px}.contact-links strong{font-size:20px}footer>div:last-of-type{flex-wrap:wrap;gap:18px}}