/* ════════════════════════════════════════════════════════════
   LORLAN Outdoor — design system v3
   Motif: the louvre. Stripes, slats and light angles recur as
   graphic devices (hero blinds, rules, placeholders, logo).
   ════════════════════════════════════════════════════════════ */

/* ── fonts (self-hosted; Chinese serif subset in fonts-zh.css) */
@font-face{font-family:'DM Sans';font-weight:400;font-display:swap;src:url(../fonts/dm-sans-latin-400-normal.woff2) format('woff2')}
@font-face{font-family:'DM Sans';font-weight:500;font-display:swap;src:url(../fonts/dm-sans-latin-500-normal.woff2) format('woff2')}
@font-face{font-family:'DM Sans';font-weight:600;font-display:swap;src:url(../fonts/dm-sans-latin-600-normal.woff2) format('woff2')}
@font-face{font-family:'Cormorant Garamond';font-weight:500;font-display:swap;src:url(../fonts/cormorant-garamond-latin-500-normal.woff2) format('woff2')}
@font-face{font-family:'Cormorant Garamond';font-weight:500;font-style:italic;font-display:swap;src:url(../fonts/cormorant-garamond-latin-500-italic.woff2) format('woff2')}
@font-face{font-family:'Cormorant Garamond';font-weight:600;font-display:swap;src:url(../fonts/cormorant-garamond-latin-600-normal.woff2) format('woff2')}
@font-face{font-family:'Playfair Display';font-weight:500;font-display:swap;src:url(../fonts/playfair-display-latin-500-normal.woff2) format('woff2')}

:root{
  --ink:#1e2321;--char:#2b302e;--stone:#f3efe8;--paper:#faf8f4;--sand:#e9e2d6;--line:#dcd3c5;--line-d:rgba(255,255,255,.14);
  --muted:#6a6862;--muted-d:#a9aba5;--bronze:#a17e55;--bronze-l:#d2b189;--bronze-d:#86663f;
  --display:'Cormorant Garamond','Noto Serif SC','Songti SC',Georgia,serif;
  --sans:'DM Sans',system-ui,-apple-system,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --pad:clamp(20px,5.5vw,96px);--max:1520px;--mast:76px;--ease:cubic-bezier(.22,.61,.36,1);--ease-o:cubic-bezier(.16,1,.3,1);
  color:var(--ink);background:var(--stone);font:400 16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility
}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--mast) + 60px)}
body{margin:0;min-width:320px;background:var(--stone);overflow-x:hidden}
body.locked{overflow:hidden}
img,video,canvas{display:block;max-width:100%}
[hidden]{display:none!important}
img{height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--bronze);outline-offset:3px}
h1,h2,h3,h4{margin:0;font-weight:500;text-wrap:balance}
p{margin:0 0 1em;text-wrap:pretty}
ul,ol{margin:0;padding:0;list-style:none}
.muted{color:var(--muted)}
.skip{position:absolute;left:12px;top:-60px;z-index:200;background:var(--ink);color:#fff;padding:10px 16px}
.skip:focus{top:12px}

/* ── type */
.h1{font-family:var(--display);font-weight:500;font-size:clamp(2.9rem,6.4vw,6.4rem);line-height:1;letter-spacing:-.012em}
.h2{font-family:var(--display);font-weight:500;font-size:clamp(2.2rem,4.2vw,4rem);line-height:1.04;letter-spacing:-.008em}
.h3{font-family:var(--display);font-weight:500;font-size:clamp(1.6rem,2.3vw,2.1rem);line-height:1.15}
:lang(zh-CN) .h1{font-size:clamp(2.3rem,4.8vw,4.8rem);line-height:1.22;letter-spacing:.02em}
:lang(zh-CN) .h2{font-size:clamp(1.8rem,3.2vw,3rem);line-height:1.3;letter-spacing:.02em}
:lang(zh-CN) .h3{font-size:clamp(1.3rem,1.8vw,1.6rem);line-height:1.4}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font:600 .7rem/1.4 var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--bronze);margin-bottom:18px}
.eyebrow:before{content:'';width:22px;height:1px;background:currentColor;opacity:.7}
.eyebrow.light{color:var(--bronze-l)}
:lang(zh-CN) .eyebrow{letter-spacing:.12em}
.lede{font-size:1.08rem;line-height:1.75;color:var(--muted);max-width:520px}
.big,.big-text p{font-family:var(--display);font-size:clamp(1.5rem,2.5vw,2.3rem);line-height:1.38;font-weight:500;margin:0;max-width:980px}
:lang(zh-CN) .big,:lang(zh-CN) .big-text p{font-size:clamp(1.25rem,2vw,1.8rem);line-height:1.7}
.big-text p+p{margin-top:1em;color:var(--muted)}
.note{font-size:.84rem;line-height:1.65;color:var(--muted);max-width:560px}
.note.light{color:var(--muted-d)}
.mt{margin-top:42px!important}

/* ── buttons & links */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:50px;padding:0 26px;background:var(--ink);color:var(--stone);border:1px solid var(--ink);font:600 .76rem var(--sans);letter-spacing:.14em;text-transform:uppercase;transition:background .3s,color .3s,border-color .3s;white-space:nowrap}
.btn:hover{background:var(--bronze);border-color:var(--bronze);color:#fff}
.btn-sm{min-height:40px;padding:0 18px;font-size:.68rem}
.btn-gold{background:var(--bronze);border-color:var(--bronze);color:#fff}
.btn-gold:hover{background:var(--bronze-d);border-color:var(--bronze-d)}
.btn-light{background:var(--stone);border-color:var(--stone);color:var(--ink)}
.btn-light:hover{background:var(--bronze-l);border-color:var(--bronze-l);color:var(--ink)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-line{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:var(--ink);background:transparent;color:var(--ink)}
:lang(zh-CN) .btn{letter-spacing:.08em}
.link{display:inline-flex;align-items:center;gap:10px;font:600 .76rem var(--sans);letter-spacing:.14em;text-transform:uppercase;border-bottom:1px solid var(--bronze);padding:6px 0;background:none;border-top:0;border-left:0;border-right:0;cursor:pointer;transition:color .2s,gap .3s var(--ease)}
.link:hover{color:var(--bronze);gap:16px}
.arr{display:inline-block;transition:transform .3s var(--ease)}
a:hover .arr,button:hover .arr{transform:translate(3px,-3px)}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px}

/* ── motion */
.fade-up{animation:fadeUp 1s var(--ease-o) both;animation-delay:var(--d,0s)}
@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.js .reveal{opacity:0;transform:translateY(30px);transition:opacity 1s var(--ease-o),transform 1s var(--ease-o);transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none}

/* ── header */
.mast{position:fixed;inset:0 0 auto;z-index:50;height:var(--mast);color:#fff;transition:background .4s,color .4s,box-shadow .4s,transform .4s var(--ease)}
.mast-in{height:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad);display:flex;align-items:center;gap:28px}
.mast.solid,body:not([data-page=home]):not([data-page=product]):not([data-page=project]) .mast{background:rgba(243,239,232,.94);color:var(--ink);backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3);box-shadow:0 1px 0 var(--line)}
.mast.hide{transform:translateY(-100%)}
body:not([data-page=home]):not([data-page=product]):not([data-page=project]) main{padding-top:var(--mast)}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none}
.brand .mark{width:34px;height:34px}
.wordmark{display:flex;flex-direction:column;font:500 1.6rem/1 'Playfair Display',Georgia,serif;letter-spacing:.08em}
.wordmark small{font:600 .44rem var(--sans);letter-spacing:.72em;margin:6px 0 0 3px}
.primary{display:flex;align-items:center;gap:clamp(14px,2vw,32px);margin-left:auto;height:100%;font-size:.9rem}
.primary>a,.has-mega>a{position:relative;padding:8px 0;opacity:.92}
.primary>a:after,.has-mega>a:after{content:'';position:absolute;left:0;right:0;bottom:2px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.primary>a:hover:after,.has-mega:hover>a:after,.primary a.current:after{transform:scaleX(1)}
.primary a.current{color:var(--bronze)}
.mast:not(.solid) .primary a.current{color:var(--bronze-l)}
.mast-tools{display:flex;align-items:center;gap:12px}
.lang{font:600 .7rem var(--sans);letter-spacing:.1em;padding:9px 11px;border:1px solid currentColor;opacity:.75;transition:opacity .2s}
.lang:hover{opacity:1}
.mast:not(.solid) .btn-sm{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4);backdrop-filter:blur(6px)}
.mast:not(.solid) .btn-sm:hover{background:#fff;color:var(--ink)}
body:not([data-page=home]):not([data-page=product]):not([data-page=project]) .mast .btn-sm{background:var(--ink);border-color:var(--ink);color:var(--stone)}
.has-mega{height:100%;display:flex;align-items:center}
.mega{position:absolute;left:0;right:0;top:100%;background:var(--stone);color:var(--ink);border-top:1px solid var(--line);box-shadow:0 40px 60px -40px rgba(20,24,22,.45);opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .3s,transform .4s var(--ease),visibility 0s .3s}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.mega-inner{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:repeat(5,1fr) .8fr;gap:22px;padding:28px var(--pad) 34px}
.mega a{display:flex;flex-direction:column;gap:5px}
.mega-img{aspect-ratio:4/3;overflow:hidden;background:var(--sand);margin-bottom:10px}
.mega-img img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.mega a:hover img{transform:scale(1.06)}
.mega strong{font:500 1.25rem/1.1 var(--display)}
.mega small{font-size:.8rem;line-height:1.5;color:var(--muted)}
.mega a:hover strong{color:var(--bronze)}
.mega-all{justify-content:center;align-items:flex-start;border-left:1px solid var(--line);padding-left:22px;font:600 .72rem var(--sans);letter-spacing:.14em;text-transform:uppercase}
.menu-toggle{display:none;width:44px;height:44px;border:0;background:none;position:relative;color:inherit}
.menu-toggle span{position:absolute;left:11px;right:11px;height:1.5px;background:currentColor}
.menu-toggle span:first-child{top:18px}.menu-toggle span:last-child{top:25px}
.mobile-menu{position:fixed;inset:0;z-index:90;background:var(--ink);color:var(--stone);display:flex;flex-direction:column;padding:16px 22px calc(26px + env(safe-area-inset-bottom));overflow-y:auto;clip-path:inset(0 0 100% 0);visibility:hidden;transition:clip-path .6s var(--ease-o),visibility 0s .6s}
.mobile-menu.open{clip-path:inset(0);visibility:visible;transition-delay:0s}
.mm-top{display:flex;justify-content:space-between;align-items:center}
.mm-close{border:0;background:none;font-size:2.2rem;width:44px;height:44px;color:inherit}
.mobile-menu nav{display:flex;flex-direction:column;margin-top:28px}
.mobile-menu nav>a{font:500 2rem/1.2 var(--display);padding:12px 0;border-bottom:1px solid var(--line-d)}
:lang(zh-CN) .mobile-menu nav>a{font-size:1.6rem}
.m-sub{display:grid;grid-template-columns:1fr 1fr;gap:2px 16px;padding:10px 0 14px;border-bottom:1px solid var(--line-d)}
.m-sub a{font-size:.95rem;color:var(--muted-d);padding:6px 0}
.mm-foot{display:flex;gap:12px;margin-top:auto;padding-top:28px}
.mm-foot .btn{flex:1;background:var(--bronze);border-color:var(--bronze)}

/* ── hero (home) */
.hero{position:relative;height:100svh;min-height:640px;max-height:1100px;overflow:hidden;background:var(--ink);color:#fff;display:flex;align-items:flex-end}
.slide{position:absolute;inset:0;margin:0;opacity:0;transition:opacity 1.6s var(--ease)}
.slide.is-active{opacity:1;z-index:1}
.slide img,.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.slide img{transform:scale(1.08);transition:transform 9s linear}
.slide.is-active img{transform:scale(1)}
.slide figcaption{position:absolute;z-index:3;right:var(--pad);bottom:46px;font:600 .7rem var(--sans);letter-spacing:.18em;text-transform:uppercase;opacity:0;transition:opacity .8s .6s}
.slide.is-active figcaption{opacity:.85}
.hero-shade{position:absolute;inset:0;z-index:2;background:linear-gradient(180deg,rgba(15,18,17,.45) 0%,rgba(15,18,17,0) 22%,rgba(15,18,17,0) 42%,rgba(15,18,17,.72) 100%),linear-gradient(90deg,rgba(15,18,17,.45),rgba(15,18,17,0) 60%);pointer-events:none}
.blinds{position:absolute;inset:0;z-index:4;display:flex;flex-direction:column;pointer-events:none}
.blinds i{flex:1;background:var(--ink);transform-origin:center top;animation:blind 1.1s var(--ease-o) both}
.blinds i:nth-child(n){animation-delay:calc(var(--n,0) * 1ms)}
.blinds i:nth-child(1){--n:0}.blinds i:nth-child(2){--n:50}.blinds i:nth-child(3){--n:100}.blinds i:nth-child(4){--n:150}.blinds i:nth-child(5){--n:200}
.blinds i:nth-child(6){--n:250}.blinds i:nth-child(7){--n:300}.blinds i:nth-child(8){--n:350}.blinds i:nth-child(9){--n:400}.blinds i:nth-child(10){--n:450}
@keyframes blind{0%{transform:scaleY(1)}100%{transform:scaleY(0)}}
.hero-copy{position:relative;z-index:3;width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad) clamp(120px,15vh,170px)}
.hero-copy .h1{max-width:13ch;margin-bottom:24px}
:lang(zh-CN) .hero-copy .h1{max-width:12em}
.hero-copy p{max-width:540px;font-size:1.1rem;line-height:1.7;color:rgba(255,255,255,.86);margin-bottom:34px}
.hero-ctrl{position:absolute;z-index:3;left:0;right:0;bottom:44px;max-width:var(--max);margin:0 auto;padding:0 var(--pad);display:flex;align-items:center;gap:22px;font:600 .7rem var(--sans);letter-spacing:.16em;pointer-events:none}
.hero-ctrl>*{pointer-events:auto}
.bars{display:flex;gap:6px}
.bars button{width:46px;height:22px;border:0;background:none;padding:0;position:relative}
.bars i{position:absolute;left:0;right:0;top:10px;height:2px;background:rgba(255,255,255,.3);overflow:hidden}
.bars i:after{content:'';position:absolute;inset:0;background:#fff;transform:scaleX(var(--p,0));transform-origin:left}
.audiences{position:relative;z-index:5;display:grid;grid-template-columns:repeat(3,1fr);background:var(--ink);color:#fff;border-top:1px solid var(--line-d)}
.aud{position:relative;display:grid;grid-template-columns:1fr auto;gap:4px 18px;padding:26px var(--pad) 28px;border-right:1px solid var(--line-d);transition:background .3s}
.aud:hover{background:var(--char)}
.aud b{font:500 1.4rem/1.2 var(--display)}
:lang(zh-CN) .aud b{font-size:1.15rem}
.aud span{grid-column:1;font-size:.86rem;color:var(--muted-d)}
.aud .arr{grid-row:1/3;grid-column:2;align-self:center;color:var(--bronze-l)}

/* ── sections */
.sec{max-width:var(--max);margin:0 auto;padding:clamp(80px,10vw,150px) var(--pad)}
.sec.pt0{padding-top:0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:60px;margin-bottom:clamp(40px,5vw,70px)}
.sec-head .h2{max-width:16ch}
:lang(zh-CN) .sec-head .h2{max-width:14em}
.sec-head .lede{margin:0}
.louvre-rule{display:flex;flex-direction:column;gap:5px;width:56px}
.louvre-rule i{height:2px;background:var(--bronze);transform:skewY(-8deg)}

/* range rail */
.range-sec{max-width:none;padding-left:0;padding-right:0}
.range-sec .sec-head{max-width:var(--max);margin:0 auto clamp(40px,5vw,70px);padding:0 var(--pad)}
.rail-btns{display:flex;gap:8px;margin-top:22px}
.rail-btns button{width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:transparent;transition:all .25s}
.rail-btns button:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.range-rail{display:grid;grid-auto-flow:column;grid-auto-columns:clamp(290px,30vw,470px);gap:clamp(16px,2vw,28px);overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding:0 var(--pad) 10px max(var(--pad),calc((100vw - var(--max))/2 + var(--pad)));scroll-padding-left:max(var(--pad),calc((100vw - var(--max))/2 + var(--pad)))}
.range-rail::-webkit-scrollbar{display:none}
.range-card{scroll-snap-align:start;display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);transition:border-color .3s,transform .5s var(--ease)}
.range-card:hover{border-color:var(--bronze)}
.rc-img{position:relative;aspect-ratio:4/3.2;overflow:hidden;background:var(--sand)}
.rc-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.range-card:hover .rc-img img{transform:scale(1.06)}
.rc-num{position:absolute;left:18px;top:14px;font:500 italic 1.6rem var(--display);color:#fff;text-shadow:0 1px 10px rgba(0,0,0,.4)}
.rc-body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1}
.rc-body h3{font:500 1.9rem/1.1 var(--display);margin-bottom:10px}
:lang(zh-CN) .rc-body h3{font-size:1.5rem}
.rc-body p{color:var(--muted);font-size:.95rem;line-height:1.65}
.rc-body .link{margin-top:auto;align-self:flex-start}
.ticks{display:flex;flex-direction:column;gap:9px;margin:4px 0 26px}
.ticks li{position:relative;padding-left:24px;font-size:.92rem;line-height:1.5}
.ticks li:before{content:'';position:absolute;left:0;top:.62em;width:12px;height:1px;background:var(--bronze)}

/* light study */
.light-study{max-width:none;background:var(--ink);color:#fff;display:grid;grid-template-columns:minmax(320px,.8fr) 1.6fr;gap:0;padding:0;align-items:stretch}
.light-study .stage{min-height:min(88vh,820px)}
.ls-copy{padding:clamp(70px,8vw,130px) clamp(28px,4vw,72px) clamp(70px,8vw,130px) max(var(--pad),calc((100vw - var(--max))/2 + var(--pad)));display:flex;flex-direction:column;justify-content:center}
.ls-copy .h2{margin-bottom:22px}
.ls-copy>p{color:var(--muted-d);line-height:1.8;font-size:.98rem;max-width:440px}
.ls-controls{display:flex;flex-direction:column;gap:22px;margin:30px 0 20px;max-width:420px}
.range{display:flex;flex-direction:column;gap:10px}
.range>span{display:flex;justify-content:space-between;font:600 .68rem var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--muted-d)}
.range output{color:#fff;font:500 1.3rem var(--display);letter-spacing:0;text-transform:none}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:24px;background:transparent;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:linear-gradient(90deg,var(--bronze-l) var(--fill,50%),rgba(255,255,255,.22) var(--fill,50%))}
input[type=range]::-moz-range-track{height:2px;background:rgba(255,255,255,.22)}
input[type=range]::-moz-range-progress{height:2px;background:var(--bronze-l)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;margin-top:-9px;border-radius:50%;background:#fff;border:5px solid var(--bronze);cursor:grab}
input[type=range]::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:#fff;border:5px solid var(--bronze);cursor:grab}
.switch{display:flex;align-items:center;gap:14px;font-size:.92rem;cursor:pointer;user-select:none}
.switch input{position:absolute;opacity:0}
.switch span{width:44px;height:24px;border-radius:24px;background:rgba(255,255,255,.2);position:relative;transition:background .3s}
.switch span:after{content:'';position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .3s var(--ease)}
.switch input:checked+span{background:var(--bronze)}
.switch input:checked+span:after{transform:translateX(20px)}
.switch input:focus-visible+span{outline:2px solid var(--bronze-l);outline-offset:3px}
.meter{display:grid;grid-template-columns:1fr auto;gap:8px 12px;padding-top:18px;border-top:1px solid var(--line-d)}
.meter span{font:600 .68rem var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--muted-d);align-self:center}
.meter b{font:500 2.2rem/1 var(--display)}
.meter i{grid-column:1/-1;height:4px;background:rgba(255,255,255,.12);position:relative}
.meter em{position:absolute;inset:0 auto 0 0;width:0;background:var(--bronze-l);transition:width .3s}
.stage{position:relative;min-height:560px;overflow:hidden;background:linear-gradient(180deg,#9ec3d8,#dfe7e3 70%,#e8e0d0);touch-action:pan-y}
.stage canvas{position:absolute;inset:0;width:100%!important;height:100%!important}
.stage-fallback{position:absolute;inset:0}
.stage-fallback img{width:100%;height:100%;object-fit:cover}
.stage.ready .stage-fallback{opacity:0;transition:opacity .8s;pointer-events:none}

/* engineering */
.eng-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2.4vw,40px)}
.eng{border-top:1px solid var(--ink);padding-top:26px}
.eng svg{width:42px;height:42px;fill:none;stroke:var(--bronze);stroke-width:1.4;margin-bottom:22px}
.eng h3{font:500 1.5rem/1.15 var(--display);margin-bottom:10px}
:lang(zh-CN) .eng h3{font-size:1.25rem}
.eng p{color:var(--muted);font-size:.94rem;line-height:1.7}
.eng-fig{margin:clamp(50px,6vw,90px) 0 0;aspect-ratio:21/8;overflow:hidden}
.eng-fig img{width:100%;height:100%;object-fit:cover}

/* projects & applications */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,28px)}
.app-img{aspect-ratio:3/4;overflow:hidden;background:var(--sand);margin-bottom:20px}
.app-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.app:hover .app-img img{transform:scale(1.05)}
.app h3{font:500 1.5rem/1.15 var(--display);margin-bottom:8px}
:lang(zh-CN) .app h3{font-size:1.2rem}
.app p{color:var(--muted);font-size:.92rem;line-height:1.65}
.pj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2vw,30px);margin-bottom:40px}
.pj-card{display:flex;flex-direction:column;gap:8px}
.pj-img{aspect-ratio:4/3;overflow:hidden;background:var(--sand);margin-bottom:12px}
.pj-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.pj-card:hover img{transform:scale(1.05)}
.pj-card h3{font:500 1.5rem/1.2 var(--display)}
.pj-card p{color:var(--muted);font-size:.9rem;margin:0}
.pj-card .eyebrow{margin:0}
.pj-card.hide{display:none}
.empty-note{font-family:var(--display);font-size:1.5rem;line-height:1.4;max-width:720px;margin-bottom:40px}

/* partner band */
.partner-band{max-width:none;padding:0;display:grid;grid-template-columns:1fr 1fr;background:var(--char);color:#fff}
.pb-img{position:relative;min-height:520px;overflow:hidden}
.pb-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.pb-copy{padding:clamp(60px,7vw,120px) max(var(--pad),calc((100vw - var(--max))/2 + var(--pad))) clamp(60px,7vw,120px) clamp(36px,5vw,90px)}
.pb-copy .h2{margin-bottom:22px}
.pb-copy>p{color:var(--muted-d);line-height:1.8;max-width:520px}
.pb-list{display:grid;grid-template-columns:1fr 1fr;gap:0;margin:30px 0 40px;border-top:1px solid var(--line-d)}
.pb-list li{padding:20px 20px 20px 0;border-bottom:1px solid var(--line-d);display:flex;flex-direction:column;gap:4px}
.pb-list li:nth-child(even){padding-left:20px;border-left:1px solid var(--line-d)}
.pb-list b{font:500 1.25rem/1.2 var(--display)}
.pb-list span{font-size:.86rem;color:var(--muted-d);line-height:1.55}
.pb-list.big li{padding-top:28px;padding-bottom:28px}
.pb-list.big b{font-size:1.6rem}

/* process */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(14px,1.6vw,26px);counter-reset:s}
.steps.four{grid-template-columns:repeat(4,1fr)}
.steps li{position:relative;padding-top:28px;border-top:1px solid var(--line)}
.steps li:before{content:'';position:absolute;left:0;top:-1px;width:36px;height:2px;background:var(--bronze)}
.p-num{font:500 italic 2.3rem/1 var(--display);color:var(--bronze)}
.steps h3{font:500 1.35rem/1.2 var(--display);margin:16px 0 10px}
:lang(zh-CN) .steps h3{font-size:1.15rem}
.steps p{color:var(--muted);font-size:.88rem;line-height:1.65}

/* resources */
.res-teaser{display:grid;grid-template-columns:.9fr 1.1fr;gap:8%;align-items:start;border-top:1px solid var(--line)}
.res-teaser .h2{margin-bottom:20px}
.res-teaser .lede{margin-bottom:26px}
.dl-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.dl-list.cols{display:grid;grid-template-columns:1fr 1fr;column-gap:40px}
.dl{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;width:100%;padding:20px 4px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;transition:background .25s,padding .3s var(--ease)}
.dl:hover{background:var(--paper);padding-left:14px;padding-right:14px}
.dl-icon{width:46px;height:56px;border:1px solid var(--ink);display:flex;align-items:flex-end;justify-content:center;padding-bottom:8px;font:600 .6rem var(--sans);letter-spacing:.08em;position:relative;background:linear-gradient(135deg,transparent 78%,var(--ink) 78%,var(--ink) 80%,transparent 80%)}
.dl-text{display:flex;flex-direction:column;gap:3px}
.dl-text b{font:500 1.2rem/1.25 var(--display)}
:lang(zh-CN) .dl-text b{font-size:1.05rem}
.dl-text small{font-size:.8rem;color:var(--muted)}
.dl-act{font:600 .68rem var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--bronze)}
.dl-groups{display:grid;grid-template-columns:1fr 1fr;gap:60px 6%}
.dl-group .h3{margin-bottom:18px}

/* faq */
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:8%}
.faq .h2{margin-bottom:28px}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{list-style:none;display:flex;justify-content:space-between;gap:24px;align-items:center;padding:26px 0;cursor:pointer;font:500 1.35rem/1.35 var(--display)}
:lang(zh-CN) .faq-list summary{font-size:1.12rem}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--bronze)}
.faq-list summary i{flex:none;width:16px;height:16px;position:relative}
.faq-list summary i:before,.faq-list summary i:after{content:'';position:absolute;left:0;right:0;top:7.5px;height:1px;background:currentColor;transition:transform .35s var(--ease)}
.faq-list summary i:after{transform:rotate(90deg)}
.faq-list details[open] summary i:after{transform:rotate(0)}
.faq-list details p{margin:0 0 26px;color:var(--muted);line-height:1.8;max-width:640px}

/* footer */
.site-footer{background:var(--ink);color:#e9e7e2}
.f-cta{max-width:var(--max);margin:0 auto;padding:clamp(70px,8vw,120px) var(--pad);display:flex;justify-content:space-between;align-items:flex-end;gap:40px;border-bottom:1px solid var(--line-d)}
.f-cta .h2{max-width:12ch}
:lang(zh-CN) .f-cta .h2{max-width:10em}
.f-cta>div{display:flex;flex-wrap:wrap;gap:12px}
.f-top{max-width:var(--max);margin:0 auto;padding:60px var(--pad);display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr 1.3fr;gap:36px}
.f-line{font:600 .62rem var(--sans);letter-spacing:.2em;color:var(--muted-d);margin-top:18px}
.f-top h3{font:600 .66rem var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--muted-d);margin:8px 0 18px}
.f-top>div:not(.f-brand){display:flex;flex-direction:column;gap:10px;font-size:.9rem;align-items:flex-start}
.f-top>div>a:hover{color:var(--bronze-l)}
.ch-list{display:flex;flex-direction:column;gap:14px}
.ch{display:flex;flex-direction:column;gap:2px}
.ch b{font:600 .62rem var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--bronze)}
.site-footer .ch b{color:var(--muted-d)}
.ch span{font-size:1rem}
a.ch:hover span{color:var(--bronze)}
.f-social{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;font-size:.84rem}
.f-bottom{max-width:var(--max);margin:0 auto;padding:22px var(--pad) calc(22px + env(safe-area-inset-bottom));display:flex;gap:24px;align-items:center;justify-content:space-between;font-size:.74rem;color:#8a8c86;border-top:1px solid var(--line-d)}
.f-note{max-width:520px}
.to-top{flex:none;width:42px;height:42px;border-radius:50%;border:1px solid var(--line-d);background:none;color:#e9e7e2;transition:background .25s}
.to-top:hover{background:var(--bronze);border-color:var(--bronze)}
.float-wa,.float-quote{position:fixed;z-index:45;right:20px;bottom:calc(20px + env(safe-area-inset-bottom));transition:transform .4s var(--ease),opacity .4s}
.float-wa{width:56px;height:56px;border-radius:50%;background:#25d366;color:#fff;display:grid;place-items:center;box-shadow:0 10px 30px -8px rgba(0,0,0,.4)}
.float-wa svg{width:30px;height:30px}
.float-quote{display:none;background:var(--bronze);color:#fff;font:600 .72rem var(--sans);letter-spacing:.12em;text-transform:uppercase;padding:14px 20px;box-shadow:0 10px 30px -10px rgba(0,0,0,.45)}
.float-hidden{transform:translateY(120px);opacity:0}

/* ── page heroes */
.page-hero{max-width:var(--max);margin:0 auto;padding:clamp(70px,9vw,140px) var(--pad) clamp(50px,6vw,90px);position:relative}
.page-hero .h1{max-width:15ch;margin-bottom:26px}
:lang(zh-CN) .page-hero .h1{max-width:14em}
.page-hero .lede{margin-bottom:30px}
.page-hero.with-img{display:grid;grid-template-columns:1fr 1fr;gap:6%;align-items:center}
.ph-photo{aspect-ratio:5/4;overflow:hidden;background:var(--sand)}
.ph-photo img{width:100%;height:100%;object-fit:cover;animation:appear 1.6s var(--ease-o) both}
@keyframes appear{from{transform:scale(1.08);opacity:.4}to{transform:none;opacity:1}}

/* product hero */
.p-hero{position:relative;min-height:min(100svh,980px);display:flex;flex-direction:column;justify-content:flex-end;color:#fff;background:var(--ink);overflow:hidden}
.p-hero-img{position:absolute;inset:0}
.p-hero-img img{width:100%;height:100%;object-fit:cover;animation:appear 1.8s var(--ease-o) both}
.p-hero-copy{position:relative;z-index:3;width:100%;max-width:var(--max);margin:0 auto;padding:calc(var(--mast) + 40px) var(--pad) 40px}
.p-hero-copy .h1{margin-bottom:18px}
.p-hero-copy>p{max-width:560px;font-size:1.08rem;color:rgba(255,255,255,.86);margin-bottom:30px}
.crumbs{display:flex;gap:10px;font:600 .66rem var(--sans);letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.7);margin-bottom:36px}
.crumbs a:hover{color:#fff}
.facts{position:relative;z-index:3;margin:0;width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad);display:grid;grid-template-columns:repeat(4,1fr)}
.facts>div{padding:22px 20px 26px 0;border-top:1px solid rgba(255,255,255,.28)}
.facts>div+div{padding-left:20px;border-left:1px solid rgba(255,255,255,.18)}
.facts dt{font:600 .62rem var(--sans);letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.7);margin-bottom:8px}
.facts dd{margin:0;font:500 1.7rem/1 var(--display)}
.facts dd small{font:500 .8rem var(--sans);margin-left:4px;opacity:.7}
.facts .subnav{position:sticky;top:0;z-index:40;background:rgba(243,239,232,.95);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 var(--pad);height:60px;transition:top .4s var(--ease)}
body.mast-visible .subnav{top:var(--mast)}
.subnav>div{display:flex;gap:clamp(16px,2.6vw,40px);overflow-x:auto;scrollbar-width:none;font:600 .7rem var(--sans);letter-spacing:.14em;text-transform:uppercase;height:100%}
.subnav>div::-webkit-scrollbar{display:none}
.subnav>div a{display:flex;align-items:center;white-space:nowrap;border-bottom:2px solid transparent;color:var(--muted);transition:color .2s,border-color .2s}
.subnav>div a:hover,.subnav>div a.on{color:var(--ink);border-color:var(--bronze)}
.p-intro{display:grid;grid-template-columns:1.2fr 1fr;gap:8%;align-items:end}
.feat-grid{display:grid;grid-template-columns:1fr;gap:0}
.p-intro .feat-grid article{padding:24px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:56px 1fr;column-gap:10px}
.p-intro .feat-grid article p{grid-column:2}
.f-num{font:500 italic 1.5rem/1 var(--display);color:var(--bronze)}
.feat-grid h3{font:500 1.45rem/1.2 var(--display);margin-bottom:8px}
:lang(zh-CN) .feat-grid h3{font-size:1.2rem}
.feat-grid p{color:var(--muted);font-size:.94rem;line-height:1.7;margin:0}
.sec>.feat-grid,.feat-grid.four{grid-template-columns:repeat(3,1fr);gap:clamp(18px,2.4vw,40px)}
.feat-grid.four{grid-template-columns:repeat(4,1fr)}
.sec>.feat-grid article,.feat-grid.four article{border-top:1px solid var(--ink);padding-top:24px}
.sec>.feat-grid .f-num,.feat-grid.four .f-num{display:block;margin-bottom:18px}
.sec.p-intro>.feat-grid{grid-template-columns:1fr;gap:0}
.sec.p-intro>.feat-grid article{border-top:1px solid var(--line);padding:24px 0}
.sec.p-intro>.feat-grid .f-num{display:inline;margin:0}

/* structure (3D) */
.structure{max-width:none;padding:0;display:grid;grid-template-columns:minmax(320px,.75fr) 1.6fr;background:var(--ink);color:#fff}
.st-copy{padding:clamp(60px,7vw,110px) clamp(28px,4vw,64px) clamp(60px,7vw,110px) max(var(--pad),calc((100vw - var(--max))/2 + var(--pad)));display:flex;flex-direction:column;justify-content:center}
.st-copy .h2{margin-bottom:28px}
.parts{display:flex;flex-direction:column;border-top:1px solid var(--line-d);margin-bottom:28px}
.parts li{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line-d);font-size:.95rem;cursor:default;transition:color .2s,padding .3s var(--ease)}
.parts li span{width:24px;height:24px;border-radius:50%;border:1px solid var(--bronze-l);color:var(--bronze-l);display:grid;place-items:center;font:600 .66rem var(--sans);flex:none}
.parts li.hl,.parts li:hover{color:var(--bronze-l);padding-left:6px}
.st-controls{display:flex;flex-direction:column;gap:22px;margin-bottom:22px;max-width:380px}
.st-controls .btn{align-self:flex-start}
.stage-structure{background:radial-gradient(ellipse at 50% 40%,#3a413e,#1a1e1c 75%);min-height:620px;cursor:grab}
.stage-structure:active{cursor:grabbing}
.labels{position:absolute;inset:0;pointer-events:none;z-index:2}
.labels span{position:absolute;left:0;top:0;width:26px;height:26px;margin:-13px 0 0 -13px;border-radius:50%;background:var(--bronze);color:#fff;display:grid;place-items:center;font:600 .7rem var(--sans);box-shadow:0 0 0 6px rgba(161,126,85,.25);transition:opacity .3s,transform .3s var(--ease)}
.labels span.hl{transform:scale(1.25);box-shadow:0 0 0 10px rgba(161,126,85,.35)}
.labels span.off{opacity:0}

/* product gallery */
.pgallery{max-width:var(--max);margin:0 auto;padding:clamp(60px,7vw,100px) var(--pad) 0;display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(12px,1.6vw,22px)}
.pg-item,.g-item{position:relative;display:block;padding:0;border:0;background:var(--sand);overflow:hidden;cursor:zoom-in;text-align:left;width:100%}
.pg-item{height:clamp(260px,34vw,560px)}
.pg-item img,.g-item img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.pg-item:hover img,.g-item:hover img{transform:scale(1.04)}
.pg-item>span,.g-cap{position:absolute;left:0;right:0;bottom:0;padding:40px 22px 18px;color:#fff;font-size:.82rem;background:linear-gradient(transparent,rgba(0,0,0,.55));opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s var(--ease)}
.pg-item:hover>span,.g-item:hover .g-cap,.pg-item:focus-visible>span{opacity:1;transform:none}

/* specs */
.specs-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:7%;align-items:start}
.specs-grid .h2{margin-bottom:16px}
.specs-grid .note{margin-bottom:24px}
.specs-grid>div:first-child{position:sticky;top:150px}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.spec-table{width:100%;border-collapse:collapse;font-size:.94rem}
.spec-table th,.spec-table td{text-align:left;padding:15px 16px 15px 0;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table tr:first-child th,.spec-table tr:first-child td{border-top:1px solid var(--ink)}
.spec-table th{font-weight:500;width:52%}
.spec-table th small{color:var(--muted);font-weight:400}
.spec-table .code{display:inline-block;width:42px;font:600 .62rem var(--sans);letter-spacing:.08em;color:var(--muted)}
.spec-table.cmp{min-width:860px}
.spec-table.cmp th{width:auto}
.spec-table.cmp thead th{font:500 1.15rem var(--display);border-top:0;border-bottom:1px solid var(--ink);vertical-align:bottom}
.spec-table.cmp thead th a:hover{color:var(--bronze)}
.spec-table.cmp tbody th{font-size:.86rem;color:var(--muted);width:200px}
.opts{margin:0;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.opts>div{padding:18px 18px 18px 0;border-bottom:1px solid var(--line)}
.opts>div:nth-child(even){padding-left:18px;border-left:1px solid var(--line)}
.opts dt{font:600 .62rem var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--bronze);margin-bottom:6px}
.opts dd{margin:0;font-size:.95rem;line-height:1.5}
.opts dd small{display:block;color:var(--muted);font-size:.82rem;margin-top:4px}
.opts.light{border-color:var(--line-d)}
.opts.light>div{border-color:var(--line-d)}
.opts.light dd{font:500 1.5rem var(--display)}
.opts.light dd small{color:var(--muted-d);font:400 .82rem var(--sans)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips li{border:1px solid var(--line);padding:8px 15px;border-radius:40px;font-size:.86rem;background:var(--paper)}
.specs .dl{border-top:1px solid var(--line);margin-bottom:6px}

/* colours */
.swatches{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(12px,1.6vw,24px)}
.swatches li{display:flex;flex-direction:column;gap:4px}
.sw{display:block;aspect-ratio:1;background:var(--c);border:1px solid rgba(0,0,0,.08);margin-bottom:12px;position:relative;overflow:hidden}
.sw:after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.22),transparent 45%,rgba(0,0,0,.12))}
.sw-textured{background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1.4px);background-size:5px 5px}
.sw-wood{background-image:repeating-linear-gradient(92deg,rgba(0,0,0,.08) 0 3px,transparent 3px 9px,rgba(255,255,255,.06) 9px 11px,transparent 11px 19px)}
.swatches b{font-weight:600;font-size:.88rem}
.swatches small{color:var(--muted);font-size:.82rem}
.colours .note{margin-top:22px}
.minis{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,2vw,26px)}
.mini{display:flex;flex-direction:column;gap:4px}
.mini-img{aspect-ratio:4/3;overflow:hidden;background:var(--sand);margin-bottom:12px}
.mini-img img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease-o)}
.mini:hover img{transform:scale(1.05)}
.mini strong{font:500 1.4rem/1.2 var(--display)}
.mini small{color:var(--muted);font-size:.86rem}
.mini:hover strong{color:var(--bronze)}

/* products overview */
.crows{display:flex;flex-direction:column;gap:clamp(80px,10vw,150px);padding-top:clamp(30px,4vw,60px)}
.crow{display:grid;grid-template-columns:56% 1fr;gap:7%;align-items:center}
.crow.flip{grid-template-columns:1fr 56%}
.crow.flip .crow-img{order:2}
.crow-img{display:block;aspect-ratio:5/4;overflow:hidden;background:var(--sand)}
.crow-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.crow-img:hover img{transform:scale(1.04)}
.crow .h2{margin-bottom:8px}
.crow .h2 a:hover{color:var(--bronze)}
.tagline{font:500 italic 1.35rem var(--display);color:var(--bronze);margin-bottom:18px}
.crow-copy>p:not(.tagline){color:var(--muted);line-height:1.8;max-width:480px}
.compare{border-top:1px solid var(--line)}

/* dark sections & splits */
.dark-sec{max-width:none;background:var(--char);color:#fff}
.dark-sec>.split{max-width:calc(var(--max) - 2 * var(--pad));margin:0 auto}
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:8%;align-items:start}
.split .h2{margin-bottom:22px}

/* stage cards (quality) */
.stage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,28px) clamp(16px,2vw,28px)}
.stage-card .f-num{display:block;margin:18px 0 6px}
.stage-card h3{font:500 1.35rem var(--display);margin-bottom:6px}
.stage-card p{color:var(--muted);font-size:.88rem}


/* routes (contact) */
.routes{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,24px)}
.route{display:grid;grid-template-columns:1fr auto;gap:6px 20px;padding:30px;background:var(--paper);border:1px solid var(--line);transition:border-color .3s,background .3s}
.route:hover{border-color:var(--bronze);background:#fff}
.route b{font:500 1.6rem/1.15 var(--display)}
.route span{grid-column:1;color:var(--muted);font-size:.9rem}
.route .arr{grid-row:1/3;grid-column:2;align-self:center;color:var(--bronze);font-size:1.2rem}
.wide-img{aspect-ratio:21/8;overflow:hidden}
.wide-img img{width:100%;height:100%;object-fit:cover}

/* gallery */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:34px}
.filters button{border:1px solid var(--line);background:transparent;padding:10px 18px;border-radius:40px;font-size:.85rem;transition:all .25s}
.filters button:hover{border-color:var(--bronze);color:var(--bronze)}
.filters button.is-active{background:var(--ink);border-color:var(--ink);color:var(--stone)}
.g-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:clamp(200px,21vw,320px);gap:clamp(10px,1.4vw,18px);grid-auto-flow:dense}
.g-item{height:100%}
.g-item.big{grid-column:span 2;grid-row:span 2}
.g-item.hide{display:none}

/* ── forms */
.form{display:flex;flex-direction:column;gap:20px}
.card{background:var(--paper);border:1px solid var(--line);padding:clamp(26px,3.6vw,50px)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.row4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.field{display:flex;flex-direction:column;gap:8px;border:0;padding:0;margin:0;min-width:0}
.field>span,.field>legend{font:600 .64rem var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);padding:0;margin-bottom:2px}
.field abbr{color:var(--bronze);text-decoration:none}
.field input,.field select,.field textarea{width:100%;border:0;border-bottom:1px solid #c8bfb1;background:transparent;padding:10px 0;font-size:1rem;border-radius:0;transition:border-color .2s;min-height:44px}
.field select{appearance:none;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23a17e55'/%3E%3C/svg%3E") right 4px center no-repeat}
.field textarea{resize:vertical;min-height:100px;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--bronze)}
.field.invalid input,.field.invalid textarea{border-color:#b4533c}
.num-in{display:flex;align-items:center;border-bottom:1px solid #c8bfb1}
.num-in input{border:0!important;font:500 1.6rem var(--display);padding:6px 0}
.num-in em{font-style:normal;color:var(--muted);font-size:.9rem}
.pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.pill{position:relative}
.pill input{position:absolute;inset:0;opacity:0;pointer-events:none}
.pill span{display:inline-block;border:1px solid var(--line);padding:10px 16px;border-radius:40px;font-size:.88rem;cursor:pointer;transition:all .2s;background:var(--paper)}
.pill:hover span{border-color:var(--bronze)}
.pill input:checked+span{background:var(--ink);color:var(--stone);border-color:var(--ink)}
.pill input:focus-visible+span{outline:2px solid var(--bronze);outline-offset:2px}
.pill.disabled{display:none}
.check{display:flex;gap:12px;align-items:flex-start;font-size:.86rem;line-height:1.6;color:var(--muted)}
.check input{margin-top:4px;accent-color:var(--bronze);width:16px;height:16px;flex:none}
.check.invalid{color:#b4533c}
.form>.btn{align-self:flex-start}
.form-status{font-size:.92rem;line-height:1.7}
.form-status:empty{display:none}
.form-status.ok,.form-status.info{border-left:2px solid var(--bronze);padding:12px 16px;background:var(--sand)}
.form-status.err{color:#b4533c}
.form-status pre{white-space:pre-wrap;font:inherit;font-size:.84rem;margin:10px 0;color:var(--muted);max-height:240px;overflow:auto}
.form-status button{border:1px solid var(--ink);background:none;padding:8px 14px;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase}
.apply .ch-list{margin-top:24px}

/* quote configurator */
.q-wrap{padding-top:0}
.q-grid{display:grid;grid-template-columns:1.5fr .9fr;gap:5%;align-items:start}
.q-prog{display:flex;gap:6px;margin-bottom:40px;counter-reset:q}
.q-prog li{flex:1;display:flex;flex-direction:column;gap:10px;font:600 .66rem var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding-top:14px;border-top:2px solid var(--line);transition:color .3s,border-color .3s}
.q-prog li span{display:none}
.q-prog li.done{border-color:var(--ink);color:var(--ink)}
.q-prog li.on{border-color:var(--bronze);color:var(--bronze)}
.qstep{border:0;padding:0;margin:0;display:flex;flex-direction:column;gap:26px;animation:fadeUp .6s var(--ease-o)}
.qstep>legend{padding:0;margin-bottom:26px;float:left;width:100%}
.qstep>legend+*{clear:both}
.qp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.qp{position:relative;cursor:pointer}
.qp input{position:absolute;opacity:0}
.qp-card{display:flex;flex-direction:column;gap:6px;height:100%;padding:12px 12px 18px;background:var(--paper);border:1px solid var(--line);transition:border-color .25s,box-shadow .25s}
.qp:hover .qp-card{border-color:var(--bronze)}
.qp input:checked+.qp-card{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.qp input:focus-visible+.qp-card{outline:2px solid var(--bronze);outline-offset:2px}
.qp-img{aspect-ratio:16/10;overflow:hidden;margin-bottom:8px;background:var(--sand)}
.qp-img img{width:100%;height:100%;object-fit:cover}
.qp-card b{font:500 1.3rem/1.15 var(--display)}
.qp-card small{color:var(--muted);font-size:.8rem;line-height:1.45}
.cpicks{display:flex;flex-wrap:wrap;gap:14px;margin-top:6px}
.cpick{position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;cursor:pointer;width:74px}
.cpick input{position:absolute;opacity:0}
.cpick .sw{width:54px;height:54px;border-radius:50%;margin:0;transition:box-shadow .2s}
.cpick input:checked+.sw{box-shadow:0 0 0 3px var(--stone),0 0 0 5px var(--ink)}
.cpick input:focus-visible+.sw{outline:2px solid var(--bronze);outline-offset:4px}
.cpick small{font-size:.7rem;color:var(--muted);text-align:center}
.q-nav{display:flex;gap:12px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.q-nav [data-q-next],.q-nav [data-q-submit]{margin-left:auto}
.q-summary{position:sticky;top:calc(var(--mast) + 24px)}
.qs-card{background:var(--ink);color:#fff;padding:30px}
.qs-card .eyebrow{color:var(--bronze-l)}
.qs-plan{aspect-ratio:4/3;background:#272c2a;margin-bottom:22px;display:grid;place-items:center}
.qs-plan svg{width:100%;height:100%}
.qs-list{margin:0;display:flex;flex-direction:column}
.qs-list>div{display:flex;justify-content:space-between;gap:20px;padding:10px 0;border-bottom:1px solid var(--line-d);font-size:.88rem}
.qs-list dt{color:var(--muted-d)}
.qs-list dd{margin:0;text-align:right}
.qs-actions{display:flex;gap:20px;margin-top:22px}
.qs-actions .link{color:#fff}

/* modal & lightbox */
.modal{position:fixed;inset:0;z-index:95;background:rgba(18,21,19,.7);backdrop-filter:blur(4px);display:grid;place-items:center;padding:20px}
.modal[hidden]{display:none}
.modal-card{position:relative;width:min(640px,100%);max-height:calc(100svh - 40px);overflow:auto;background:var(--stone);padding:clamp(26px,4vw,46px);animation:fadeUp .4s var(--ease-o)}
.modal-x{position:absolute;right:12px;top:10px;border:0;background:none;font-size:2rem;width:44px;height:44px}
.modal-card .h3{margin-bottom:8px}
.gate-doc{font:500 1.2rem var(--display);color:var(--bronze);margin:4px 0 18px}
.lightbox{position:fixed;inset:0;z-index:96;background:rgba(14,16,15,.95);display:flex;align-items:center;justify-content:center;padding:60px 76px;opacity:0;transition:opacity .3s}
.lightbox.open{opacity:1}
.lightbox[hidden]{display:none}
.lightbox figure{margin:0;display:flex;flex-direction:column;align-items:center}
.lightbox img{max-width:100%;max-height:calc(100svh - 160px);object-fit:contain}
.lightbox figcaption{color:#ddd;font-size:.85rem;margin-top:16px;text-align:center}
.lightbox button{position:absolute;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;width:48px;height:48px;border-radius:50%;font-size:1.2rem}
.lightbox button:hover{background:rgba(255,255,255,.15)}
.lb-close{top:18px;right:18px}
.lb-prev{left:16px;top:50%;transform:translateY(-50%)}
.lb-next{right:16px;top:50%;transform:translateY(-50%)}
.cookie{position:fixed;left:20px;bottom:20px;z-index:80;max-width:420px;background:var(--ink);color:#fff;padding:20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;font-size:.86rem}
.cookie[hidden]{display:none}
.cookie p{margin:0;flex-basis:100%}
.cookie .link{color:#fff}

/* project detail */
.pj-hero{min-height:70svh}
.pj-body{display:grid;grid-template-columns:.8fr 1.2fr;gap:7%}

/* ── responsive */
@media(max-width:1240px){
  .primary{gap:16px;font-size:.84rem}
  .mega-inner{grid-template-columns:repeat(5,1fr)}
  .mega-all{display:none}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:44px}
  .f-top{grid-template-columns:1fr 1fr 1fr}
  .f-brand{grid-column:1/-1}
}
@media(max-width:1080px){
  .primary{display:none}.menu-toggle{display:block}
  .mast-tools{margin-left:auto}
  .light-study,.structure{grid-template-columns:1fr}
  .ls-copy,.st-copy{padding:70px var(--pad) 40px}
  .stage,.light-study .stage{min-height:520px}
  .eng-grid,.app-grid,.feat-grid.four,.stage-grid{grid-template-columns:repeat(2,1fr);row-gap:44px}
  .partner-band{grid-template-columns:1fr}
  .pb-img{min-height:360px}
  .pb-copy{padding:70px var(--pad)}
  .res-teaser,.faq-grid,.split,.specs-grid,.p-intro,.pj-body{grid-template-columns:1fr;gap:44px}
  .specs-grid>div:first-child{position:static}
  .q-grid{grid-template-columns:1fr}
  .q-summary{position:static;order:-1}
  .qs-card{display:grid;grid-template-columns:200px 1fr;gap:20px;padding:20px}
  .qs-card .eyebrow{grid-column:1/-1;margin:0}
  .qs-plan{margin:0}
  .qs-actions{grid-column:1/-1;margin:0}
  .page-hero.with-img{grid-template-columns:1fr}
  .minis,.swatches{grid-template-columns:repeat(3,1fr)}
  .pj-grid,.routes,.dl-groups{grid-template-columns:1fr 1fr}
  .g-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:720px){
  :root{--mast:64px}
  .wordmark{font-size:1.3rem}
  .brand .mark{width:28px;height:28px}
  .mast .btn-sm{display:none}
  .hero{min-height:600px}
  .hero-copy{padding-bottom:110px}
  .hero-copy p{font-size:1rem}
  .slide figcaption{display:none}
  .audiences{grid-template-columns:1fr}
  .aud{border-right:0;border-bottom:1px solid var(--line-d);padding:20px 22px}
  .sec{padding:72px 22px}
  .sec.pt0{padding-top:0}
  .sec-head{display:block}
  .sec-head .lede{margin-top:18px}
  .range-sec{padding-left:0;padding-right:0}
  .range-sec .sec-head{padding:0 22px}
  .range-rail{grid-auto-columns:82vw;padding-left:22px;scroll-padding-left:22px}
  .stage,.light-study .stage{min-height:400px}
  .stage-structure{min-height:420px}
  .ls-copy,.st-copy{padding:64px 22px 30px}
  .eng-grid,.app-grid{grid-template-columns:1fr 1fr;gap:30px 14px}
  .eng h3,.app h3{font-size:1.2rem}
  .eng p,.app p{font-size:.84rem}
  .eng-fig{aspect-ratio:4/3}
  .pb-list{grid-template-columns:1fr}
  .pb-list li:nth-child(even){padding-left:0;border-left:0}
  .steps,.steps.four{grid-template-columns:1fr;row-gap:30px}
  .dl-list.cols{grid-template-columns:1fr}
  .dl{gap:14px}
  .dl-act{font-size:.6rem}
  .f-cta{flex-direction:column;align-items:flex-start;padding:70px 22px}
  .f-top{grid-template-columns:1fr 1fr;padding:50px 22px}
  .f-top>div:last-child{grid-column:1/-1}
  .f-bottom{flex-wrap:wrap;padding-left:22px;padding-right:22px}
  .float-quote{display:inline-flex;left:16px;right:16px;justify-content:center}
  .page-hero{padding:56px 22px 40px}
  .p-hero-copy{padding:calc(var(--mast) + 30px) 22px 28px}
  .facts{grid-template-columns:1fr 1fr;padding:0 22px}
  .facts>div:nth-child(3){padding-left:0;border-left:0}
  .facts dd{font-size:1.3rem}
  .subnav{padding:0 0 0 22px}
  .subnav .btn{display:none}
  .pgallery{grid-template-columns:1fr;padding:56px 22px 0}
  .opts{grid-template-columns:1fr}
  .opts>div:nth-child(even){padding-left:0;border-left:0}
  .minis{grid-template-columns:1fr 1fr;gap:26px 14px}
  .mini strong{font-size:1.15rem}
  .swatches{grid-template-columns:repeat(3,1fr)}
  .crow,.crow.flip{display:flex;flex-direction:column;gap:26px;align-items:stretch}
  .crow.flip .crow-img{order:0}
  .feat-grid.four,.sec>.feat-grid,.stage-grid{grid-template-columns:1fr;row-gap:30px}
  .pj-grid,.routes,.dl-groups,.row2{grid-template-columns:1fr}
  .row4{grid-template-columns:1fr 1fr}
  .qp-grid{grid-template-columns:1fr 1fr}
  .qp-card small{display:none}
  .q-summary{order:1}
  .qs-card{grid-template-columns:120px 1fr}
  .g-grid{grid-template-columns:1fr;grid-auto-rows:260px}
  .g-item.big{grid-column:auto;grid-row:span 1}
  .lightbox{padding:60px 10px}
  .lb-prev,.lb-next{top:auto!important;bottom:18px;transform:none!important}
  .lb-prev{left:calc(50% - 58px)}.lb-next{right:calc(50% - 58px)}
  .wide-img{aspect-ratio:4/3}
}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
  .blinds{display:none}
}
@media print{
  .mast,.mobile-menu,.site-footer,.float-wa,.float-quote,.lightbox,.modal,.cookie,.q-nav,.q-prog,.page-hero{display:none!important}
  body[data-page=quote] main>*:not(.q-wrap){display:none}
  .q-grid{display:block}
  .qstep[hidden]{display:flex!important}
  .qs-card{background:#fff;color:#000;border:1px solid #000}
}
.pj-body+.pgallery{padding-bottom:clamp(80px,9vw,140px)}
.slide picture,.p-hero-img picture{display:contents}

/* brand logo (supplied artwork) */
.brand{gap:12px}
.brand img{display:block}
.logo-mark{width:auto;height:44px}
.logo-word img{height:17px;width:auto}
.brand .on-dark{display:none}
[data-page=home] .mast:not(.solid) .brand .on-light,[data-page=product] .mast:not(.solid) .brand .on-light,[data-page=project] .mast:not(.solid) .brand .on-light,.mobile-menu .brand .on-light{display:none}
[data-page=home] .mast:not(.solid) .brand .on-dark,[data-page=product] .mast:not(.solid) .brand .on-dark,[data-page=project] .mast:not(.solid) .brand .on-dark,.mobile-menu .brand .on-dark{display:block}
.brand-full img{width:200px;height:auto}
@media(max-width:720px){.logo-mark{height:36px}.logo-word img{height:14px}.brand-full img{width:170px}}

.sc-photo{position:relative;display:block;width:100%;aspect-ratio:4/3;padding:0;border:0;background:var(--sand);overflow:hidden;cursor:zoom-in}
.sc-photo img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.sc-photo:hover img{transform:scale(1.04)}
.badge{position:absolute;left:10px;top:10px;background:rgba(30,35,33,.78);color:#fff;font:600 .6rem var(--sans);letter-spacing:.14em;text-transform:uppercase;padding:5px 9px}
.pj-card .sc-photo{margin-bottom:12px}

.view-switch{display:flex;border:1px solid var(--line-d);align-self:flex-start}
.view-switch button{background:none;border:0;color:var(--muted-d);font:600 .66rem var(--sans);letter-spacing:.14em;text-transform:uppercase;padding:11px 14px;transition:background .25s,color .25s}
.view-switch button.is-active{background:var(--bronze);color:#fff}
.view-switch button:not(.is-active):hover{color:#fff}
.stage-light{background:#cfd8de}

/* ── v4: factory data components */
.facts.three{grid-template-columns:repeat(3,1fr)}
.facts.three dd{font:500 1.15rem/1.3 var(--display)}
:lang(zh-CN) .facts.three dd{font-size:1rem}
.model-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(20px,2.4vw,36px)}
.model-grid.n1{grid-template-columns:1fr}
.model-grid.n1 .model{display:grid;grid-template-columns:1.3fr 1fr;gap:5%;align-items:center}
.model-grid.n3{grid-template-columns:repeat(3,1fr)}
.model{display:flex;flex-direction:column;gap:18px}
.model-img{position:relative;display:block;width:100%;aspect-ratio:4/3;padding:0;border:0;background:var(--sand);overflow:hidden;cursor:zoom-in}
.model-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.model-img:hover img{transform:scale(1.04)}
.model-img .g-cap{display:none}
.model-body .h3{margin-bottom:8px}
.model-body p{color:var(--muted);font-size:.94rem}
.mini-dl{margin:14px 0 0;border-top:1px solid var(--line)}
.mini-dl>div{display:grid;grid-template-columns:42% 1fr;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:.86rem}
.mini-dl dt{color:var(--muted)}
.mini-dl dd{margin:0}
.structures .diag{margin-bottom:clamp(50px,6vw,90px)}
.structures .diag:last-child{margin-bottom:0}
.diag .h3{margin-bottom:22px}
.diag-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:5%;align-items:start}
.diag-img{aspect-ratio:auto!important;height:auto!important;background:#fff;border:1px solid var(--line)}
.diag-img img{height:auto!important;object-fit:contain}
.diag-img .g-cap{display:none}
.diag .spec-table th{width:58%}
.ref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,1.6vw,22px);margin-bottom:34px}
.ref-grid .g-item{aspect-ratio:4/3}
.g-item .badge,.pg-item .badge{z-index:1}
.pg-item>.g-cap{position:absolute;left:0;right:0;bottom:0;padding:40px 22px 18px;color:#fff;font-size:.82rem;background:linear-gradient(transparent,rgba(0,0,0,.55));opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s var(--ease)}
.pg-item:hover>.g-cap,.pg-item:focus-visible>.g-cap{opacity:1;transform:none}
.home-specs .table-wrap{margin-bottom:16px}
.spec-table.cmp td{font-size:.9rem}
.spec-table a:hover{color:var(--bronze)}
.qr{display:block;width:140px;height:140px;margin-top:8px;background:#fff;padding:6px}
.dl{text-decoration:none}
[data-for][hidden]{display:none!important}
@media(max-width:1080px){
  .model-grid,.model-grid.n3{grid-template-columns:1fr 1fr}
  .model-grid.n1 .model,.diag-grid{grid-template-columns:1fr;gap:26px}
  .ref-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .facts.three{grid-template-columns:1fr}
  .facts.three>div,.facts.three>div+div{padding:12px 0;border-left:0}
  .facts.three dd{font-size:1rem}
  .model-grid,.model-grid.n3{grid-template-columns:1fr}
  .ref-grid{grid-template-columns:1fr}
  .spec-table.cmp{min-width:620px}
}
.specs-grid>*,.split>*,.p-intro>*{min-width:0}
.spec-table.pspec th{width:auto}.spec-table.pspec thead th{font:500 1.05rem var(--display);border-bottom:1px solid var(--ink);vertical-align:bottom}
.spec-table.pspec tbody th{color:var(--muted);font-size:.86rem;width:30%}.spec-table.pspec tr:first-child th,.spec-table.pspec tr:first-child td{border-top:0}