*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:#f7f5ef;color:#262c26;font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #ad7750;outline-offset:4px}button{color:inherit}img{display:block;max-width:100%}[hidden]{display:none!important}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:500}main,.site-header,.site-footer{max-width:1440px;margin:auto;padding-left:64px;padding-right:64px}.site-header{height:116px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #deded3}.brand{display:flex;align-items:center;gap:13px;font-size:20px;font-weight:600;letter-spacing:2px}.brand small{display:block;font:9px/1.8 Arial,sans-serif;letter-spacing:2.2px;color:#727b6e}.brand-mark{height:44px;width:44px;border:1px solid #354c3e;display:grid;place-items:center;font:27px/1 Georgia,"Songti SC",SimSun,serif;border-radius:50%}.header-note{font-size:12px;color:#707769;letter-spacing:2px}.header-link{font-size:13px;display:flex;gap:16px}.header-link span{font-size:20px}.intro{display:flex;justify-content:space-between;gap:30px;padding:66px 0 58px}.eyebrow{font:10px/1.5 Arial,sans-serif;letter-spacing:2.1px;color:#7a806f;margin-bottom:21px}h1{font-family:"Songti SC","Noto Serif CJK SC",SimSun,serif;font-size:clamp(38px,4vw,58px);line-height:1.35;letter-spacing:2px}.intro-copy{color:#797d72;margin-top:23px;font-size:13px;line-height:1.95}.intro-side{display:flex;flex-direction:column;justify-content:space-between;align-items:flex-end;min-width:275px;padding-top:16px}.collection-number{font:italic 92px/1 Georgia,serif;color:#354b3b;display:flex;align-items:center;gap:23px}.collection-number span{font:12px/1.5 sans-serif;writing-mode:vertical-rl;letter-spacing:3px;color:#78816f}.steps{display:flex;align-items:center;gap:14px;font-size:11px;color:#797e72}.steps b{font:11px Georgia,serif;color:#405141;margin-right:5px}.steps i{width:19px;height:1px;background:#c8cbbc}.collection-bar{display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid #d6d9cb;padding-bottom:19px;margin-bottom:29px}.collection-bar h2{font-size:16px;white-space:nowrap}.collection-bar h2 span{display:inline-block;margin-left:10px;font:10px Arial,sans-serif;color:#7b816f;vertical-align:top}.filters{display:flex;gap:7px;flex-wrap:wrap}.filter{border:0;background:transparent;padding:8px 17px;font-size:12px;border-radius:30px;color:#79806f;min-height:38px}.filter.active{background:#2f4637;color:#fff}.filter:not(.active):hover{background:#eaece2}.material-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:38px 27px}.material-card{display:block;min-width:0}.card-image{position:relative;overflow:hidden;border-radius:3px;background:#e3dfd3;aspect-ratio:1}.card-image img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}.material-card:hover .card-image img{transform:scale(1.035)}.card-index{position:absolute;top:18px;left:18px;border:1px solid #ffffff80;color:white;border-radius:50%;width:29px;height:29px;display:grid;place-items:center;font:10px Georgia,serif;background:#00000012}.card-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:17px;gap:10px}.card-bottom h3{font-size:19px;letter-spacing:.5px}.card-bottom p{font-size:11px;color:#7c8273;margin-top:5px;letter-spacing:.4px}.card-arrow{width:36px;height:36px;border:1px solid #d2d7c8;display:grid;place-items:center;border-radius:50%;transition:background .2s;font-size:19px;flex-shrink:0}.material-card:hover .card-arrow{background:#2f4637;border-color:#2f4637;color:white}.card-caption{display:flex;align-items:center;gap:7px;font-size:10px;color:#878c7e;margin-top:10px}.card-caption:before{content:"";width:4px;height:4px;border-radius:50%;background:#9aab87}.guide{border-top:1px solid #d5d9cb;margin-top:74px;padding:48px 0 58px;display:grid;grid-template-columns:1fr 1.2fr;gap:70px}.guide h2{font:27px/1.5 "Songti SC",SimSun,serif}.guide .eyebrow{margin-bottom:16px}.guide-notes p{display:flex;gap:18px;color:#747c6a;font-size:12px;margin-bottom:17px}.guide-notes span{font:italic 16px Georgia,serif;color:#42563b;flex-shrink:0}.site-footer{border-top:1px solid #d6d9cc;display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:25px;padding-bottom:31px;font-size:11px;color:#727c69}.site-footer>span:first-child{font-size:13px;color:#414d3a}.site-footer small{font-size:10px;color:#7f8776}.skip-link{position:fixed;top:-100px;left:20px;background:#fff;padding:12px;z-index:20}.skip-link:focus{top:10px}.breadcrumb{display:flex;align-items:center;gap:13px;padding:28px 0;color:#7e8576;font-size:12px}.breadcrumb a{color:#374c37}.detail-intro{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center;padding-bottom:55px}.detail-photo{width:100%;aspect-ratio:1;object-fit:cover;border-radius:3px}.detail-info .eyebrow{margin-bottom:18px}.detail-info h1{font-size:40px;letter-spacing:0}.detail-tag{font-size:13px;color:#69745f;margin-top:12px}.detail-description{font-size:14px;line-height:1.95;color:#6f7964;margin-top:25px;max-width:440px}.spec-list{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #d5dacb;border-bottom:1px solid #d5dacb;margin:28px 0 26px;padding:17px 0;gap:15px}.spec-list dt{color:#7e8773;font-size:10px;margin-bottom:5px}.spec-list dd{margin:0;font-size:14px}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:20px;background:#2f4838;color:#fff;border:1px solid #2f4838;border-radius:3px;padding:12px 25px;font-size:13px;min-height:47px}.primary-button:hover{background:#203c2c}.text-button{background:transparent;border:0;text-decoration:underline;text-underline-offset:5px;color:#627257;padding:12px 2px;font-size:12px}.detail-actions{display:flex;align-items:center;gap:21px;flex-wrap:wrap}.detail-note{font-size:10px;color:#89917f;margin-top:17px;max-width:400px}.color-section{border-top:1px solid #d4d9c9;padding-top:35px;padding-bottom:60px}.color-heading{display:flex;justify-content:space-between;gap:25px;align-items:flex-start;margin-bottom:26px}.color-heading h2{font:30px/1.4 "Songti SC",SimSun,serif;margin-bottom:8px}.color-heading p{font-size:12px;color:#7a8370}.color-heading .eyebrow{margin-bottom:10px}.color-count{border:1px solid #d6dccb;border-radius:30px;padding:7px 15px;font-size:11px;white-space:nowrap}.color-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:start}.sheets{display:flex;flex-direction:column;gap:20px}.sheet-card{background:#fff;border:1px solid #e1e4d9;border-radius:4px;overflow:hidden}.sheet-label{display:flex;justify-content:space-between;align-items:center;padding:13px 18px;border-bottom:1px solid #eaede4;font-size:11px;color:#6f7c63}.sheet-label button{background:transparent;border:0;color:#405a36;font-size:11px;padding:7px 0;min-height:32px}.sheet-open{display:block;width:100%;padding:0;background:white;border:0;cursor:zoom-in}.sheet-open img{width:100%;height:auto}.selection-panel{position:sticky;top:24px;padding:26px;background:#ecefe4;border:1px solid #e0e5d6;border-radius:4px}.selection-panel .eyebrow{margin-bottom:12px}.selection-panel h3{font-size:18px}.chosen-material{margin-top:17px;padding-bottom:20px;border-bottom:1px solid #d1d9c4}.chosen-material small{display:block;font-size:10px;color:#7c8870;margin-bottom:4px}.chosen-material strong{font-size:16px;font-weight:500}.selection-panel label{display:block;font-size:12px;margin:20px 0 8px}.selection-panel input{width:100%;background:#fff;border:1px solid #cbd4bf;border-radius:3px;padding:12px;font-size:13px;min-height:47px}.selection-help{font-size:10px;color:#808a75;margin-top:8px}.selection-panel .primary-button{width:100%;margin-top:20px;padding-left:12px;padding-right:12px}.selection-result{font-size:12px;white-space:pre-wrap;line-height:1.8;overflow-wrap:anywhere;margin-top:18px;padding:13px;background:#f9faf6;border-radius:3px}.selection-status{font-size:11px;margin-top:11px;color:#6c795e}.selection-notice{font-size:11px;line-height:1.85;color:#7a8670;margin-top:18px;border-top:1px solid #d2dbc6;padding-top:16px}.sheet-navigation{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}.sheet-navigation a{font-size:11px;padding:7px 12px;background:#edf0e6;border-radius:3px;color:#69765c}.back-bottom{margin-top:22px;display:inline-flex;font-size:12px;color:#5d714e}.toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%,20px);background:#263d2d;color:#fff;padding:12px 23px;border-radius:4px;z-index:100;opacity:0;pointer-events:none;transition:.2s;max-width:90vw;font-size:13px;box-shadow:0 5px 25px #0002}.toast.visible{opacity:1;transform:translate(-50%,0)}dialog{color:inherit;border:0;border-radius:8px;padding:0;background:#f7f5ef;box-shadow:0 20px 80px #0003}dialog::backdrop{background:#182017ba}#image-viewer{width:min(1080px,95vw);max-width:none;height:92dvh;max-height:92dvh}#image-viewer[open]{display:flex;flex-direction:column}.viewer-header{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;gap:15px}.viewer-header strong{font-size:15px;font-weight:500}.viewer-header small{display:block;font-size:10px;color:#7a8271;margin-top:3px}.icon-button{width:40px;height:40px;background:#e9ecdf;border:0;border-radius:50%;font-size:24px;flex-shrink:0}.viewer-tools{display:flex;align-items:center;gap:8px;padding:10px 22px;border-top:1px solid #dde2d2;border-bottom:1px solid #dde2d2;flex-wrap:wrap}.viewer-tools button,.viewer-tools a{border:1px solid #d7dfcc;background:#fff;border-radius:3px;padding:6px 12px;font-size:11px;min-height:34px}.viewer-tools a{margin-left:auto}.viewer-scroll{overflow:auto;flex:1;min-height:0;background:#e7e9df;overscroll-behavior:contain}.viewer-scroll img{width:100%;max-width:none;height:auto;margin:0 auto;background:#fff}#copy-fallback{width:min(440px,92vw);padding:28px}#copy-fallback h2{font-size:19px}#copy-fallback p{font-size:12px;color:#7b8471;margin:10px 0}#copy-fallback textarea{width:100%;min-height:160px;border:1px solid #cbd5bf;border-radius:3px;padding:12px;resize:vertical;background:#fff}#copy-fallback .primary-button{width:100%;margin-top:16px}.noscript{padding:40px 0;color:#784a2c}
.detail-photo-button{padding:0;border:0;background:transparent;cursor:zoom-in;width:100%}.sheet-navigation button{font-size:11px;padding:7px 12px;background:#edf0e6;border:0;border-radius:3px;color:#69765c;min-height:36px}
@media(min-width:1500px){.material-grid{gap:45px 33px}}
@media(max-width:1050px){main,.site-header,.site-footer{padding-left:35px;padding-right:35px}.detail-intro{gap:35px}.detail-info h1{font-size:34px}.color-layout{grid-template-columns:minmax(0,1fr) 265px;gap:25px}.selection-panel{padding:20px}.guide{gap:35px}.header-note{display:none}.material-grid{gap:30px 20px}}
@media(max-width:740px){main,.site-header,.site-footer{padding-left:21px;padding-right:21px}.site-header{height:86px}.brand{font-size:18px;gap:10px}.brand-mark{width:37px;height:37px;font-size:23px}.brand small{font-size:8px}.header-link{font-size:11px;gap:8px}.intro{padding:40px 0 32px;display:block}.eyebrow{font-size:9px;margin-bottom:16px}h1{font-size:38px;line-height:1.4}.intro-copy{font-size:12px;margin-top:17px}.intro-side{min-width:0;flex-direction:row;align-items:center;padding-top:24px}.collection-number{font-size:44px;gap:10px}.collection-number span{font-size:9px;writing-mode:horizontal-tb;letter-spacing:1px}.steps{gap:7px;font-size:9px}.steps i{width:8px}.steps b{font-size:9px;margin-right:3px}.collection-bar{align-items:flex-start;flex-direction:column;gap:14px;margin-bottom:21px;padding-bottom:16px}.collection-bar h2{font-size:14px}.filters{gap:4px;width:100%;justify-content:space-between}.filter{font-size:11px;padding:7px 12px;min-height:36px}.material-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:27px 14px}.card-index{top:10px;left:10px;width:24px;height:24px;font-size:9px}.card-bottom{padding-top:12px;align-items:flex-start;gap:5px}.card-bottom h3{font-size:15px;line-height:1.5;letter-spacing:0}.card-bottom p{font-size:10px;line-height:1.6;margin-top:4px}.card-arrow{width:25px;height:25px;font-size:15px}.card-caption{font-size:9px;margin-top:7px;gap:5px}.guide{grid-template-columns:1fr;gap:27px;margin-top:45px;padding-top:30px;padding-bottom:35px}.guide h2{font-size:24px}.guide-notes p{font-size:11px;gap:12px;margin-bottom:13px}.site-footer{align-items:flex-start;flex-wrap:wrap;gap:12px;font-size:10px;padding-top:20px;padding-bottom:24px}.site-footer>span:nth-child(2){order:3;width:100%}.site-footer>a{margin-left:auto}.breadcrumb{font-size:11px;padding:20px 0}.detail-intro{grid-template-columns:1fr;gap:26px;padding-bottom:32px}.detail-info h1{font-size:33px}.detail-info .eyebrow{margin-bottom:10px}.detail-tag{margin-top:9px}.detail-description{font-size:13px;margin-top:16px}.spec-list{margin:20px 0}.detail-note{font-size:10px}.color-section{padding-top:28px;padding-bottom:35px}.color-heading h2{font-size:26px}.color-heading{gap:12px;margin-bottom:20px}.color-heading p{font-size:11px}.color-count{font-size:10px;padding:5px 10px}.color-layout{display:flex;flex-direction:column;gap:22px}.sheets{width:100%;gap:17px}.selection-panel{position:static;width:100%;order:-1;padding:20px}.selection-panel .eyebrow{display:none}.selection-panel h3{font-size:16px}.chosen-material{margin-top:10px;padding-bottom:12px}.chosen-material small{display:none}.chosen-material strong{font-size:13px}.selection-panel label{margin-top:12px;font-size:11px}.selection-panel input{font-size:14px}.selection-panel .primary-button{margin-top:12px}.selection-notice{margin-top:12px;padding-top:12px}.selection-result{margin-top:13px}.sheet-label{padding:9px 12px;font-size:10px}.sheet-label button{font-size:10px}.viewer-header{padding:12px 14px}.viewer-tools{padding:8px 14px;gap:5px}.viewer-tools button,.viewer-tools a{font-size:10px;padding:6px 10px}.viewer-tools a{margin-left:0}#image-viewer{width:96vw;height:94dvh;max-height:94dvh}.toast{bottom:20px;width:max-content;max-width:90vw;font-size:12px}.detail-actions{gap:15px}.primary-button{min-height:46px}.sheet-navigation a{min-height:36px}}
.mobile-choice-shortcut{display:none}
@media(max-width:740px){.selection-panel{order:1}.mobile-choice-shortcut{display:block;position:fixed;right:21px;bottom:18px;z-index:5;padding:12px 20px;border:1px solid #4c624e;border-radius:30px;color:#fff;background:#2f4838;box-shadow:0 4px 18px #20302425;font-size:12px;min-height:44px}.color-section{padding-bottom:78px}.intro-copy,.guide-notes p{font-size:12px}.color-heading p{font-size:12px}.selection-help,.selection-notice{font-size:12px}.toast{bottom:76px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}