:root{--navy:#172b3b;--ink:#213746;--muted:#62717c;--orange:#d84a21;--line:#dfe5e8;--paper:#f5f7f8}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;color:var(--ink);font:14px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:white}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #d84a21;outline-offset:3px}a{color:inherit;text-decoration:none}button{color:inherit;border:1px solid var(--line);background:white;padding:10px 16px;border-radius:4px}button:hover{background:#f0f3f5}::selection{background:#ffd6bf;color:#172b3b}input{caret-color:var(--orange)}.utility{padding:7px max(5%,calc((100vw - 1440px)/2));background:var(--paper);display:flex;justify-content:space-between;font-size:11px;color:#596974}.utility-divider{margin:0 15px;color:#adb6bc}header{max-width:1440px;margin:auto;padding:28px 0;display:flex;align-items:center;gap:45px;width:90%}.brand{display:flex;align-items:center;gap:12px;min-width:210px}.brand svg{width:39px;height:39px;color:var(--orange)}.brand b{font-size:29px;line-height:1.05;letter-spacing:2px}.brand small{font-size:9px;display:block;letter-spacing:1.5px;margin-top:8px}#search{display:flex;flex:1;border:1px solid #cbd3d9;border-radius:5px;overflow:hidden}#query{min-width:0;width:100%;border:0;background:#fafbfc;padding:13px 18px;outline-offset:-3px}input::placeholder{color:#687782}.primary{background:var(--orange);color:white;border:0;padding:13px 25px;white-space:nowrap}.primary:hover{background:#b83a18}.primary span{margin-left:17px}.list-button{border:0;white-space:nowrap}.list-button b{display:inline-block;background:#fbe9e0;color:#b13b1b;padding:1px 8px;margin-left:8px;border-radius:3px}nav{background:var(--navy);display:flex;padding:0 5%;gap:10px;align-items:center;color:#fff}nav button{border:0;background:transparent;color:white;padding:15px 23px;border-radius:0}nav button:hover{background:#294357}nav button:first-child{background:#294357;min-width:225px;text-align:left}nav button:first-child span{float:right}nav>span{font-size:12px;margin-left:auto;color:#b9c8d2}main{max-width:1440px;width:90%;margin:auto}.hero{display:grid;grid-template-columns:1.15fr 1fr;background:#ecf0f1;min-height:370px;margin-top:26px;overflow:hidden;position:relative;border-radius:6px}.hero-copy{padding:43px 48px;z-index:1}h1{font-size:40px;line-height:1.4;letter-spacing:-1.2px;margin:0 0 16px;font-weight:650}h1>span{color:var(--orange)}.hero p{color:#5a6c76;line-height:1.9;margin-bottom:24px}.hero a{font-size:12px;margin-left:20px}.chip-art{position:relative;display:grid;place-items:center;background:#dce4e7;overflow:hidden;perspective:800px}.chip{width:218px;height:218px;border:15px solid #44525b;background:#172a36;transform:rotate(-23deg) rotateX(18deg) rotateY(-12deg);box-shadow:19px 24px 30px #172b3b42;position:relative}.chip:before,.chip:after{content:"";position:absolute;inset:-29px 6px;background:repeating-linear-gradient(90deg,#94a3aa 0 7px,transparent 7px 17px);z-index:-1}.chip:after{inset:6px -29px;background:repeating-linear-gradient(0deg,#94a3aa 0 7px,transparent 7px 17px)}.chip-inner{position:absolute;inset:0;background:#1f3441;padding:16px 20px;color:#d9e5ea}.chip svg{width:43px;height:43px;color:#db7555}.chip-inner span{display:block;font-size:20px;line-height:1.35;font-weight:700;margin-top:5px;letter-spacing:.5px}.chip-inner small{font-size:7px;letter-spacing:2px;color:#a7bac5}.art-label{position:absolute;bottom:24px;right:25px;font-size:9px;letter-spacing:2px;color:#5a6c76}.trace{position:absolute;width:80%;height:120px;border:1px solid #a4b6bf;transform:rotate(-23deg);border-radius:20px}.trace-a{top:15%;left:25%}.trace-b{top:38%;left:-20%;height:180px}.trace-c{top:65%;left:15%}.service-strip{display:grid;grid-template-columns:repeat(4,1fr);padding:26px 0;border-bottom:1px solid var(--line);gap:20px}.service-strip>div{border-right:1px solid var(--line);padding-left:22px}.service-strip>div:first-child{padding-left:0}.service-strip>div:last-child{border:0}.service-strip b{display:block;font-size:14px;font-weight:600}.service-strip span{font-size:11px;color:var(--muted)}.section-heading{display:flex;justify-content:space-between;align-items:end;padding:36px 0 24px}h2{font-size:25px;letter-spacing:-.5px;line-height:1.4;margin:0 0 8px}.section-heading p{margin:0;color:var(--muted);font-size:12px}#record-stat{font-size:12px;color:var(--muted)}.catalog-layout{display:grid;grid-template-columns:225px 1fr;gap:30px}aside{border:1px solid var(--line);border-radius:4px;align-self:start}.aside-title{background:var(--paper);padding:12px 15px;font-weight:600;display:flex;align-items:center;justify-content:space-between}.aside-title button{border:0;font-size:11px;padding:0;background:none;color:var(--muted)}#categories{max-height:670px;overflow:auto;scrollbar-width:thin;scrollbar-color:#b4bfc6 #f5f7f8}#categories button{display:flex;width:100%;text-align:left;border:0;border-radius:0;padding:11px 14px;gap:10px;align-items:center;font-size:12px}#categories button span{margin-left:auto;font-size:10px;color:#6c7a85;font-variant-numeric:tabular-nums}#categories button.active{color:#bd3c17;background:#fff1e9;font-weight:600}.results{min-width:0}.result-top{display:flex;align-items:center;justify-content:space-between;gap:10px;border-bottom:1px solid var(--line);padding-bottom:15px}.breadcrumb{font-size:10px;color:var(--muted)}h3{margin:4px 0 0;font-size:19px}h3 small{font-size:11px;font-weight:400;color:var(--muted);margin-left:10px}.view-options{display:flex;gap:15px;font-size:11px;align-items:center}select{border:1px solid var(--line);padding:7px;border-radius:3px;max-width:100%;background:white;color:var(--ink)}input[type=checkbox]{accent-color:var(--orange)}#subcategory-wrap{padding-top:12px}#active-search{font-size:12px;color:#9b3719;padding-top:10px}#products{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 20px}.product{border-bottom:1px solid var(--line);padding:20px 0;min-width:0}.product-top{display:flex;align-items:center;gap:12px;margin-bottom:15px}.part-icon{background:#f0f3f4;display:grid;place-items:center;width:56px;height:56px;flex-shrink:0;border-radius:4px;color:#657b88}.part-icon svg{width:35px;height:35px}.maker{font-size:10px;color:var(--muted);overflow-wrap:anywhere}.product-title{display:block;padding:0;border:0;text-align:left;font-size:13px;font-weight:650;overflow-wrap:anywhere;line-height:1.5;background:none;margin-top:4px}.product-title:hover{color:var(--orange);background:none}.description{font-size:11px;color:#63737f;height:36px;overflow:hidden;line-height:1.6;margin:0 0 14px}.product-bottom{display:flex;justify-content:space-between;align-items:center;gap:5px}.stock{font-size:11px;color:#30725b;font-variant-numeric:tabular-nums}.stock.empty{color:#65747f}.add{padding:5px 9px;font-size:11px;color:#b43c1d;border-color:#e9bba9}.add:hover{background:#fff1e9}.pagination{display:flex;justify-content:space-between;align-items:center;padding:24px 0;color:var(--muted);font-size:11px}.pagination button{font-size:11px;padding:7px 12px;margin-left:7px}.bottom-banner{margin:35px 0 40px;background:#edf2f3;padding:30px 36px;display:flex;align-items:center;justify-content:space-between;border-radius:5px}.bottom-banner h2{font-size:22px}.bottom-banner p{color:var(--muted);font-size:12px;margin:0}.bottom-banner button{border-color:#bdcbd2;background:transparent}footer{border-top:1px solid var(--line);padding:30px 5%;display:flex;align-items:center;gap:50px;font-size:11px;color:var(--muted)}.footer-brand{font-size:25px;color:var(--ink);font-weight:650}.footer-brand small{display:block;font-size:8px;letter-spacing:1px}footer>span{margin-left:auto}dialog{border:0;border-radius:8px;padding:35px;width:min(640px,92vw);max-height:85vh;overflow:auto;box-shadow:0 20px 80px #172b3b44;color:var(--ink)}dialog::backdrop{background:#12273588}.close{float:right;border:0;font-size:25px;padding:0 8px;background:none}dialog p{color:var(--muted)}dl{display:grid;grid-template-columns:95px 1fr;gap:12px;font-size:13px}dd{margin:0;overflow-wrap:anywhere}dt{color:var(--muted)}.list-row{padding:15px 0;border-top:1px solid var(--line);display:flex;align-items:center;gap:12px}.list-row div{flex:1;overflow-wrap:anywhere}.list-row small{display:block;color:var(--muted)}.list-row input{width:85px;padding:6px;border:1px solid var(--line)}.list-row button{padding:4px 8px}#export{margin-top:20px}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:var(--navy);color:white;border-radius:5px;padding:12px 22px;display:none;z-index:5}.message{grid-column:1/-1;padding:60px 20px;text-align:center;color:var(--muted)}@media(min-width:1600px){nav{padding-inline:calc((100vw - 1440px)/2)}}@media(max-width:1050px){header{gap:20px}.brand{min-width:175px}nav{gap:0}nav button{padding:13px}nav>span{display:none}h1{font-size:32px}.hero-copy{padding:35px 28px}.hero a{display:block;margin:14px 0 0}.catalog-layout{grid-template-columns:200px 1fr;gap:20px}#products{grid-template-columns:repeat(2,minmax(0,1fr))}.view-options{gap:7px;flex-wrap:wrap;justify-content:end}.service-strip span{font-size:10px}}@media(max-width:650px){.utility>span:first-child{display:none}.utility{justify-content:center}header{padding:18px 0;flex-wrap:wrap;justify-content:space-between}.brand{min-width:0}.brand b{font-size:25px}.brand svg{width:32px}#search{order:3;flex-basis:100%;margin-top:3px}nav{overflow:auto;white-space:nowrap;padding:0 5%;font-size:12px}nav button:first-child{min-width:145px}nav button{font-size:12px;flex-shrink:0}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:30px 24px}h1{font-size:30px}.hero p{font-size:12px}.chip-art{min-height:220px}.chip{width:145px;height:145px;border-width:10px}.chip-inner{padding:9px}.chip svg{width:28px;height:28px}.chip-inner span{font-size:13px}.chip-inner small{font-size:5px}.art-label{font-size:7px}.service-strip{grid-template-columns:1fr 1fr;gap:20px}.service-strip>div{padding:0;border:0}.service-strip b{font-size:12px}.section-heading{display:block;padding-top:28px}#record-stat{display:block;margin-top:10px}.catalog-layout{display:block}aside{margin-bottom:20px}#categories{display:flex;max-height:145px;flex-wrap:wrap;padding:5px}#categories button{width:auto;padding:7px 9px;font-size:11px}#categories button span{display:none}.result-top{align-items:start}h3{font-size:16px}.view-options{font-size:10px;max-width:145px}#products{gap:0 14px}.product-top{display:block}.part-icon{margin-bottom:12px}.product-bottom{display:block}.add{margin-top:8px}.product-title{font-size:12px}.description{font-size:10px}.bottom-banner{display:block;padding:25px}.bottom-banner button{margin-top:18px}footer{gap:20px;align-items:start;flex-wrap:wrap}footer>span{margin-left:0}dialog{padding:24px}.list-row{flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Keep catalog labels readable on smaller displays. */
:root{--orange:#c8421c}.brand small,.footer-brand small{font-size:11px;letter-spacing:.5px}.maker,.breadcrumb,#categories button span,.service-strip span,.description,.view-options{font-size:11px}.art-label{color:#455964}button{min-height:34px}.chip-inner small{font-size:7px}
/* Catalog landing and site information use the established navy/orange system. */
.nav-guide{color:white;padding:15px 18px;white-space:nowrap}.nav-guide:hover{background:#294357}.category-shortcuts{padding:34px 0 10px}.shortcut-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.shortcut-heading h2{font-size:23px;margin:0}.shortcut-heading a{font-size:12px;color:#586e7a}.shortcut-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-block:1px solid var(--line)}.shortcut-grid button{border:0;border-radius:0;border-right:1px solid var(--line);background:transparent;text-align:left;padding:24px 20px}.shortcut-grid button:first-child{padding-left:0}.shortcut-grid button:last-child{border-right:0}.shortcut-grid button:hover{background:#f6f8f9}.shortcut-grid b{display:block;font-size:18px;margin-bottom:6px}.shortcut-grid span{display:block;font-size:12px;color:#60727f}.shortcut-grid .shortcut-link{margin-top:18px;color:#aa3b1b;font-weight:600}.selection-guide{display:grid;grid-template-columns:1fr 2fr;gap:50px;padding:50px 0 20px;border-top:1px solid var(--line);margin-top:20px}.guide-intro p{font-size:13px;color:#637681}.selection-guide ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;padding:0;list-style:none;counter-reset:steps}.selection-guide li{counter-increment:steps}.selection-guide li:before{content:counter(steps);display:block;font-size:13px;color:#ad401e;margin-bottom:12px;font-weight:700}.selection-guide b{font-size:15px}.selection-guide li p{font-size:12px;color:#637681;line-height:1.9}.site-footer{display:block;background:#f6f8f9;padding:42px max(5%,calc((100vw - 1440px)/2)) 20px}.footer-main{display:grid;grid-template-columns:1.3fr .8fr .8fr 1.2fr;gap:40px}.footer-intro p{font-size:12px;line-height:1.9}.footer-column h3{font-size:13px;font-weight:650;margin:0 0 15px;color:var(--ink)}.footer-column>a,.footer-column>button{display:block;font-size:12px;color:#586e7a;padding:0;margin:0 0 10px;min-height:0;border:0;background:none;text-align:left}.footer-column button:hover,.footer-column a:hover{color:var(--orange)}.footer-location p{font-size:15px;color:#2c4556;margin:0 0 8px}.footer-location span{font-size:11px}.footer-bottom{margin-top:34px;padding-top:18px;border-top:1px solid #dce3e7;display:flex;justify-content:space-between;font-size:11px}.dialog-guide{display:inline-block;color:#a33718;margin-top:12px}.product-title{font-size:14px}.maker,.description,.stock{font-size:12px}.description{height:39px}.chip-inner span{font-size:23px;line-height:1.5}.chip-inner small{font-size:10px;letter-spacing:1px}.art-label{font-size:11px;letter-spacing:1px}@media(max-width:900px){.footer-main{grid-template-columns:1fr 1fr;gap:30px}.selection-guide{grid-template-columns:1fr;gap:10px}.shortcut-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.shortcut-grid button:nth-child(2){border-right:0}.shortcut-grid button:nth-child(3){padding-left:0;border-top:1px solid var(--line)}.shortcut-grid button:nth-child(4){border-top:1px solid var(--line)}}@media(max-width:650px){.shortcut-grid b{font-size:16px}.shortcut-grid button{padding:18px 12px}.shortcut-grid span{font-size:11px}.shortcut-heading h2{font-size:20px}.selection-guide{padding-top:30px}.selection-guide ol{grid-template-columns:1fr;gap:15px}.selection-guide li:before{float:left;margin:0 12px 0 0}.selection-guide li p{margin:4px 0 0 23px}.footer-main{gap:24px}.footer-intro{grid-column:1/-1}.footer-location{grid-column:1/-1}.footer-bottom{gap:20px}.chip-inner span{font-size:15px}.chip-inner small{font-size:8px}.product-title{font-size:13px}}
/* Release 4: clearer catalog controls and comfortable touch targets. */
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang HK","PingFang TC","Microsoft JhengHei",sans-serif}
header{gap:24px}.brand{min-width:170px}.login-button{white-space:nowrap;border-color:#a9b7c0;min-height:44px}.list-button{padding-inline:8px}
.hero{min-height:310px}.hero-copy{padding:32px 40px}h1{font-size:36px}.hero p{margin-bottom:18px}
#active-search{display:flex;flex-wrap:wrap;gap:8px;padding-block:12px}#active-search:empty{padding:0}#active-search button{font-size:12px;min-height:36px;background:#fff5ef;color:#923317;border-color:#edcaba}#active-search button span{margin-left:8px}
.product-category{font-size:11px;color:#566b78;margin:0 0 8px;overflow-wrap:anywhere}.description{height:auto;min-height:40px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.product-title{line-height:1.6}.product-bottom{flex-wrap:wrap;gap:10px}.add{min-height:40px}.stock{color:#425d6b}.stock.empty{color:#62717c}
#page-jump{display:flex;align-items:center;gap:6px}#page-number{width:85px;padding:7px;border:1px solid var(--line);border-radius:3px}#page-jump button{margin:0}.pagination{gap:14px;flex-wrap:wrap}.pagination button{min-height:40px}
#detail-title{overflow-wrap:anywhere}.detail-maker{margin-top:0}.detail-actions{display:flex;flex-wrap:wrap;gap:12px;margin-block:24px}.share-label{display:block;font-size:12px;color:#62717c}#product-link{width:100%;padding:10px;border:1px solid var(--line);margin-top:6px;color:#425d6b;background:#f5f7f8}
#login{max-width:440px}#login .primary{margin-top:14px}.close{min-width:44px;min-height:44px}#toast{max-width:90vw;text-align:center}.footer-column>a,.footer-column>button{min-height:36px;display:flex;align-items:center;margin-bottom:3px}
@media(max-width:1050px){header{flex-wrap:wrap;gap:12px}.brand{margin-right:auto}#search{order:3;flex-basis:100%}nav{overflow:auto;white-space:nowrap}nav button{flex-shrink:0}.hero-copy{padding:30px 25px}.hero a{display:block;margin:12px 0 0}}
@media(max-width:650px){h1{font-size:29px}.hero{min-height:0}.hero-copy{padding:25px}.chip-art{display:none}.service-strip{gap:18px}.service-strip b{font-size:13px}.service-strip span{font-size:12px}.shortcut-grid button{min-height:126px}.catalog-layout aside{margin-bottom:16px}#categories{max-height:145px}#categories button{min-height:44px}.result-top{display:block}.view-options{max-width:none;justify-content:space-between;margin-top:14px;font-size:12px;gap:10px}.view-options select{min-height:44px}#products{grid-template-columns:1fr}.product{padding:20px 0}.product-top{display:flex;gap:14px;margin-bottom:10px}.product-top .part-icon{margin:0}.product-title{font-size:16px}.maker,.description,.stock,.product-category{font-size:13px}.description{min-height:0;margin-bottom:16px}.product-bottom{display:flex;align-items:center}.add{min-height:44px;margin:0;font-size:13px}.pagination{font-size:12px}#page-jump{order:3;flex-basis:100%}#page-jump button,.pagination button{min-height:44px}#active-search button{min-height:44px}.footer-column>a,.footer-column>button{min-height:44px}.list-row input{min-height:44px}.list-row button{min-width:44px;min-height:44px}}
:root{--muted:#586772}
@media(max-width:650px){header{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:12px 8px}.brand{min-width:0;margin:0;gap:7px}.brand b{font-size:23px}.brand svg{width:28px}.brand small{font-size:10px}.login-button{padding:8px 12px}.list-button{padding:8px 0;font-size:12px}.list-button b{margin-left:4px}#search{grid-column:1/-1;width:100%;margin-top:0}.service-strip span{font-size:11px}}
.browse-all{border:0;background:transparent;font-size:12px;padding:10px;color:#425d6b}.hero .browse-all{margin-left:10px}.shortcut-heading .browse-all{padding-right:0}@media(max-width:1050px){.hero .browse-all{display:block;margin:6px 0 0;padding-left:0}}@media(max-width:650px){.browse-all{min-height:44px}}