:root{--paper:#f1eee9;--surface:#faf9f6;--graphite:#303232;--soft:#4b4d4c;--copper:#9b653f;--muted:#706f6b;--line:#d3ccc3;--max:1240px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--graphite);background:var(--paper);font-family:"Segoe UI",Arial,"Noto Sans TC",sans-serif}body:before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,rgba(48,50,50,.025) 1px,transparent 1px);background-size:88px 100%}a{color:inherit;text-decoration:none}img,video{display:block;max-width:100%}h1,h2,h3,p{margin-top:0}h1,h2,h3,.display,.section-title{font-family:"Arial Narrow","Segoe UI",Arial,"Noto Sans TC",sans-serif;font-weight:700}.shell{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;height:84px;background:rgba(250,249,246,.97);border-bottom:1px solid #c8c0b6;box-shadow:0 10px 28px rgba(48,50,50,.08)}.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;min-width:62px}.brand-mark{width:58px;height:58px;color:transparent;background:url("../images/youli-logo.jpg") center/contain no-repeat}.brand>span:last-child{display:none}.nav{display:flex;align-items:center;gap:30px}.nav a{position:relative;color:#4a4b49;font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.nav a:hover,.nav a.active{color:var(--copper)}.nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:-14px;height:2px;background:var(--copper)}.nav-toggle{display:none;width:42px;height:42px;color:var(--graphite);background:transparent;border:1px solid #aaa49c;border-radius:50%;font-size:18px}
.kicker,.breadcrumb{color:#8b5837;font-size:10px;font-weight:700;line-height:1.4;letter-spacing:.19em;text-transform:uppercase}.kicker:before{content:"// "}.actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:38px}.btn{min-width:170px;padding:15px 24px;display:inline-flex;align-items:center;justify-content:space-between;color:var(--graphite);border:1px solid #77736e;border-radius:2px;font-size:11px;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.btn-primary{color:#fff;background:var(--graphite);border-color:var(--graphite)}.btn:hover,.btn-primary:hover{color:#fff;background:var(--copper);border-color:var(--copper)}.section{padding:112px 0}.scanline{height:4px;background:linear-gradient(90deg,var(--soft) 0 82%,var(--copper) 82%)}
.hero{min-height:calc(100vh - 84px);padding:80px 0;display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:7vw}.display{margin:28px 0 36px;font-size:clamp(56px,8.5vw,132px);line-height:.84;letter-spacing:-.045em;text-transform:uppercase}.display .outline{color:var(--graphite)}.display .glow{color:var(--copper)}.lead{max-width:650px;color:#5d6d7b;font-size:17px;line-height:1.8}.hero-art{height:590px;overflow:hidden;background:url("../images/anti-flip.jpg") center/cover no-repeat;border:1px solid #c8c0b6;border-radius:2px;box-shadow:24px 24px 0 #706c66}.hero-art .cyber-umbrella,.hero-art .corner{display:none}.stats{color:#fff;background:var(--soft)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}.stat{padding:34px;border-right:1px solid rgba(255,255,255,.16)}.stat:last-child{border-right:0}.stat strong{display:block;color:#d6ad8f;font:400 36px/1 Georgia,serif}.stat span{color:#dedbd6;font-size:9px;font-weight:700;letter-spacing:.13em;text-transform:uppercase}.section-head{margin-bottom:58px;display:grid;grid-template-columns:1fr 1fr;gap:8vw;align-items:end}.section-title{margin:18px 0 0;font-size:clamp(44px,6vw,82px);line-height:.92;letter-spacing:-.025em;text-transform:uppercase}.section-title em{color:var(--copper);font-family:Georgia,serif;font-weight:400;text-transform:none}.section-head>p{color:#60717f;line-height:1.8}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{overflow:hidden;position:relative;background:var(--surface);border:1px solid var(--line);box-shadow:0 14px 35px rgba(48,50,50,.07)}.card-media{height:360px;background-position:center;background-size:cover;border-bottom:1px solid var(--line)}.cards .card:nth-child(1) .card-media{background-image:url("../images/entry-folding-scene-ai.png")}.cards .card:nth-child(2) .card-media{background-image:url("../images/entry-golf-scene-ai.png")}.cards .card:nth-child(3) .card-media{background-image:url("../images/entry-patio-scene-ai.png")}.cards .card-media img{width:100%;height:100%;object-fit:cover;opacity:0}.card-body{padding:30px;border-top:3px solid var(--soft)}.card h3{margin:0 0 8px;font-size:26px}.card p{color:var(--muted);font-size:13px;line-height:1.65}.arrow{color:#8b5837;font-size:23px}.split{display:grid;grid-template-columns:1fr 1fr;gap:24px}.image-panel{padding:10px;background:var(--surface);border:1px solid var(--line)}.image-panel img,.image-panel video{width:100%;height:100%;min-height:420px;object-fit:cover}.copy-panel,.tech-card,.contact-card{padding:42px;background:var(--surface);border:1px solid var(--line);box-shadow:0 14px 35px rgba(48,50,50,.07)}.copy-panel h2{font-size:clamp(40px,5vw,70px);line-height:.95;letter-spacing:-.05em}.copy-panel p,.tech-card p,.contact-card p{color:var(--muted);line-height:1.8}.feature-list{margin:30px 0;padding:0;list-style:none;border-top:1px solid var(--line)}.feature-list li{padding:16px 0;border-bottom:1px solid var(--line);font-size:11px;font-weight:700;letter-spacing:.08em}.feature-list li:before{content:"◇";margin-right:12px;color:var(--copper)}
.page-hero{padding:100px 0 70px;color:var(--graphite);background:linear-gradient(110deg,#ded8d0,#f4f1ec 72%,#d4ccc2);border-bottom:4px solid var(--copper)}.page-hero h1{margin:28px 0 20px;font-size:clamp(56px,9vw,132px);line-height:.82;letter-spacing:-.025em;text-transform:uppercase}.page-hero h1 span{color:var(--copper)}.page-hero p{max-width:700px;color:#66645f;line-height:1.8}.tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.tech-card{min-height:300px;border-top:4px solid var(--soft)}.tech-card h3{margin:45px 0 14px;font-size:28px}.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.contact-card strong{display:block;margin:28px 0 12px;font-size:24px}.contact-card a{color:#8b5837}
.product-layout{display:grid;grid-template-columns:280px 1fr;gap:50px}.side-index{position:sticky;top:110px;height:max-content;padding:24px;color:#fff;background:var(--soft)}.side-index b{display:block;margin-bottom:18px;color:#e0b493;font-size:10px;letter-spacing:.15em}.side-index a{display:block;padding:13px 0;color:#d0ceca;border-top:1px solid rgba(255,255,255,.15);font-size:12px}.side-index a:hover,.side-index a.active{color:#e0b493}.product-main h2{font-size:clamp(46px,6vw,82px);line-height:.9}.collection-intro{margin-bottom:28px;display:flex;justify-content:space-between;align-items:end;gap:28px}.collection-intro h2{margin:0}.collection-intro p{max-width:520px;margin:0;color:var(--muted);line-height:1.7}.gallery{display:grid;grid-template-columns:minmax(0,1fr) 126px;gap:18px}.gallery-stage{min-height:610px;position:relative;display:grid;place-items:center;overflow:hidden;background:var(--surface);border:1px solid var(--line);box-shadow:0 18px 45px rgba(48,50,50,.09)}.gallery-stage img{width:100%;height:610px;object-fit:contain;cursor:zoom-in}.gallery-info{position:absolute;left:28px;right:28px;bottom:24px;padding:15px 18px;display:flex;justify-content:space-between;align-items:center;color:#fff;background:rgba(48,50,50,.91)}.gallery-info strong{font-size:12px;letter-spacing:.08em;text-transform:uppercase}.gallery-info span{color:#e0b493;font-size:10px;font-weight:700}.gallery-rail{height:610px;overflow:auto;padding-right:5px;scrollbar-color:var(--copper) transparent}.gallery-thumb{width:100%;height:92px;margin:0 0 10px;padding:4px;cursor:pointer;background:var(--surface);border:1px solid var(--line)}.gallery-thumb img{width:100%;height:100%;object-fit:cover}.gallery-thumb:hover,.gallery-thumb.active{border-color:var(--copper);box-shadow:0 0 0 2px rgba(155,101,63,.18)}.gallery-controls{display:flex;gap:10px;margin-top:16px}.gallery-controls button{padding:14px 18px;cursor:pointer;color:var(--graphite);background:var(--surface);border:1px solid var(--line);font-size:10px;font-weight:800;letter-spacing:.1em}.gallery-controls button:hover{color:#fff;background:var(--graphite)}.spec-grid{margin:40px 0;display:grid;grid-template-columns:repeat(3,1fr);overflow:hidden;background:var(--surface);border:1px solid var(--line)}.spec{padding:24px;border-right:1px solid var(--line)}.spec:last-child{border-right:0}.spec strong{display:block;color:#8b5837;font-size:10px;letter-spacing:.12em}.spec span{display:block;margin-top:10px;color:var(--muted);font-size:13px}.lightbox{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:40px;cursor:zoom-out;background:rgba(30,30,30,.94)}.lightbox img{max-width:94vw;max-height:90vh;object-fit:contain}.lightbox button{position:absolute;top:22px;right:28px;cursor:pointer;color:#fff;background:none;border:0;font-size:44px}
.configurator-section{padding-top:70px}.configurator-section .shell{max-width:1100px}.engine-toolbar{padding:18px 22px;display:flex;justify-content:space-between;align-items:center;color:#fff;background:var(--soft);border-bottom:3px solid var(--copper)}.engine-toolbar strong{display:block;font-size:13px;letter-spacing:.1em}.engine-toolbar span{display:block;margin-top:5px;color:#d5d2cd;font-size:9px;font-weight:700}.engine-toolbar a{padding:11px 14px;border:1px solid rgba(255,255,255,.4);font-size:10px;font-weight:800}.exact-engine-wrap{width:100%;overflow:auto;background:#ccd1d4;border:1px solid #aeb8c0}.exact-engine-wrap iframe{width:1000px;min-width:1000px;height:750px;margin:0 auto;display:block;background:#ccc;border:0}.engine-guide{display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;background:var(--surface);border:1px solid var(--line);border-top:0}.engine-guide div{padding:20px;display:flex;gap:12px;border-right:1px solid var(--line)}.engine-guide div:last-child{border-right:0}.engine-guide b{color:#8b5837;font-size:12px}.engine-guide span,.engine-note{color:var(--muted);font-size:11px;line-height:1.65}.engine-note{margin-top:18px}
footer{padding:46px 0;color:#d3d0cb;background:var(--soft);border-top:1px solid var(--copper)}.footer-contact{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:42px;align-items:start}.footer-contact h2{margin:0 0 12px;color:#fff;font-size:22px;letter-spacing:.02em}.footer-contact p{margin:0;color:#d6d3ce;font-size:13px;line-height:1.8}.footer-contact strong{display:block;margin-bottom:8px;color:#e0b493;font-size:11px;letter-spacing:.12em;text-transform:uppercase}.footer-contact a{color:#fff}.footer-contact a:hover{color:#e0b493}.footer-legal{margin-top:30px;padding-top:22px;color:#aaa7a2;border-top:1px solid rgba(255,255,255,.18);font-size:11px}
@media(max-width:980px){.site-header{height:74px}.nav{position:fixed;top:74px;left:0;right:0;display:none;flex-direction:column;align-items:flex-start;padding:28px;background:var(--surface);border-bottom:1px solid #c8c0b6}.nav.open{display:flex}.nav-toggle{display:block}.hero{grid-template-columns:1fr;padding-top:60px}.hero-art{height:500px;box-shadow:14px 14px 0 #706c66}.section-head,.split,.tech-grid,.contact-grid{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.16)}.product-layout{grid-template-columns:1fr}.side-index{position:static;display:flex;gap:16px;overflow:auto}.side-index b{display:none}.side-index a{white-space:nowrap;border-top:0}}
@media(max-width:760px){.gallery{grid-template-columns:1fr}.gallery-stage,.gallery-stage img{height:440px;min-height:440px}.gallery-rail{height:auto;display:flex;overflow:auto;padding:2px}.gallery-thumb{min-width:92px;height:74px;margin:0 8px 0 0}.collection-intro{align-items:flex-start;flex-direction:column}.engine-toolbar{align-items:flex-start;gap:16px;flex-direction:column}.engine-guide{grid-template-columns:1fr 1fr}.engine-guide div:nth-child(2){border-right:0}.engine-guide div:nth-child(-n+2){border-bottom:1px solid var(--line)}.footer-contact{grid-template-columns:1fr;gap:24px}}
@media(max-width:620px){.shell{width:min(100% - 30px,var(--max))}.brand{min-width:48px}.brand-mark{width:46px;height:46px}.display{font-size:55px}.hero-art{height:390px}.section{padding:80px 0}.stats-grid,.cards{grid-template-columns:1fr}.stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.16)}.section-head{margin-bottom:38px}.copy-panel{padding:30px}.image-panel img,.image-panel video{min-height:280px}.page-hero{padding:75px 0 55px}.page-hero h1{font-size:clamp(48px,14vw,72px)}.spec-grid{grid-template-columns:1fr}.spec{border-right:0;border-bottom:1px solid var(--line)}.spec:last-child{border-bottom:0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}