/* roulang page: index */
:root{
            --ink:#202522;
            --muted:#69716b;
            --paper:#f4f3ee;
            --surface:#fffefa;
            --line:#d9ddd5;
            --deep:#18201c;
            --green:#b8d947;
            --green-dark:#7f9d16;
            --orange:#ee7747;
            --radius:16px;
            --radius-sm:9px;
            --shadow:0 16px 42px rgba(24,32,28,.09);
            --container:1220px;
            --space:104px;
        }
        *,*:before,*:after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;font-size:16px}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{max-width:100%;display:block}
        button,input,select,textarea{font:inherit}
        .grid-container{max-width:var(--container);padding-left:24px;padding-right:24px}
        .top-line{background:var(--deep);color:#e9eee7;font-size:13px}
        .top-line .grid-x{min-height:42px;align-items:center}
        .brand{font-size:21px;font-weight:800;letter-spacing:-.04em;color:#fff}
        .brand em{font-style:normal;color:var(--green)}
        .top-tools{display:flex;gap:24px;align-items:center;justify-content:flex-end}
        .top-tools a:hover{color:var(--green)}
        .main-nav{background:rgba(255,254,250,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .main-nav .grid-x{min-height:68px;align-items:center}
        .nav-links{display:flex;gap:5px;align-items:center;justify-content:flex-end}
        .nav-links a{padding:10px 14px;border-radius:8px;font-size:14px;font-weight:650}
        .nav-links a:hover,.nav-links a.active{background:var(--ink);color:#fff}
        .nav-contact{background:var(--green)!important;color:var(--ink)!important;margin-left:8px}
        .nav-contact:hover{background:#d1ec63!important}
        .menu-toggle{display:none;background:var(--ink);color:#fff;border:0;border-radius:8px;padding:10px 13px}
        .hero{min-height:650px;position:relative;overflow:hidden;color:#fff;background:var(--deep)}
        .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,32,28,.93) 20%,rgba(24,32,28,.7) 56%,rgba(24,32,28,.28)),url('/assets/images/backpic/back-1.webp') center/cover}
        .hero .grid-container{position:relative;z-index:1}
        .hero-content{padding:112px 0 116px;max-width:780px}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--green-dark);font-size:12px;letter-spacing:.12em;font-weight:800;text-transform:uppercase}
        .eyebrow{color:var(--green);border-left:3px solid var(--green);padding-left:12px}
        h1,h2,h3{margin:0;line-height:1.18;letter-spacing:-.045em}
        h1{font-size:clamp(40px,5.2vw,72px);max-width:760px;margin:22px 0 25px}
        .hero-intro{font-size:18px;line-height:1.9;color:#dce4db;max-width:700px}
        .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
        .button{border-radius:8px;padding:13px 22px;margin:0;font-weight:750;transition:.25s ease}
        .button.primary{background:var(--green);color:var(--ink)}
        .button.primary:hover{background:#d2ee64;transform:translateY(-2px)}
        .button.hollow{border:1px solid rgba(255,255,255,.5);color:#fff}
        .button.hollow:hover{border-color:var(--green);color:var(--green)}
        .button:focus,input:focus,textarea:focus,select:focus,button:focus,a:focus{outline:3px solid rgba(184,217,71,.55);outline-offset:3px}
        .orbit{min-height:650px}
        .orbit-previous,.orbit-next{background:rgba(255,255,255,.15);border-radius:50%;width:42px;height:42px}
        .orbit-previous:hover,.orbit-next:hover{background:var(--green);color:var(--ink)}
        .orbit-bullets{position:absolute;bottom:28px;left:calc((100% - var(--container))/2 + 24px);z-index:3}
        .orbit-bullets button{width:30px;height:4px;border-radius:2px;background:#7b877d}
        .orbit-bullets button.is-active{background:var(--green)}
        section{padding:var(--space) 0}
        .section-head{max-width:730px;margin-bottom:42px}
        .section-head h2{font-size:clamp(29px,3.4vw,46px);margin:12px 0 16px}
        .section-head p{color:var(--muted);margin:0;font-size:17px}
        .pain{background:#e9ebe3}
        .pain-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
        .pain h2{font-size:clamp(32px,4vw,54px)}
        .pain-copy p{color:var(--muted);font-size:17px}
        .issue-wall{display:grid;grid-template-columns:1fr 1fr;gap:12px}
        .issue{padding:22px;background:var(--surface);border-left:4px solid var(--orange);border-radius:var(--radius-sm);font-weight:700;box-shadow:0 5px 18px rgba(30,40,32,.05)}
        .story-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:58px;align-items:center}
        .story-image{position:relative}
        .story-image img{width:100%;height:390px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
        .story-note{position:absolute;right:-18px;bottom:22px;background:var(--green);padding:18px 20px;border-radius:8px;font-weight:800;max-width:210px}
        .story-text p{color:var(--muted)}
        .architecture{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
        .arch-item{background:var(--surface);padding:28px 22px;min-height:190px}
        .arch-item strong{display:block;color:var(--orange);font:700 28px/1 Georgia,serif;margin-bottom:22px}
        .arch-item h3{font-size:21px;margin-bottom:12px}
        .arch-item p{font-size:14px;color:var(--muted);margin:0}
        .solutions{background:#fffefa}
        .solution-layout{display:grid;grid-template-columns:1fr 1fr;gap:15px}
        .solution-card{min-height:230px;padding:30px;background:#edf0e8;border-radius:var(--radius);position:relative;overflow:hidden}
        .solution-card:nth-child(2){transform:translateY(30px);background:var(--deep);color:#fff}
        .solution-card:nth-child(3){background:#f3dfd2}
        .solution-card:nth-child(4){transform:translateY(30px);background:#dce7a5}
        .number{font-size:13px;font-weight:800;color:var(--orange);letter-spacing:.1em}
        .solution-card h3{font-size:25px;margin:18px 0 12px}
        .solution-card p{font-size:14px;margin:0;color:var(--muted)}
        .solution-card:nth-child(2) p{color:#bec9bf}
        .timeline{border-left:2px solid var(--green-dark);margin-left:18px}
        .step{position:relative;padding:0 0 34px 42px}
        .step:last-child{padding-bottom:0}
        .step:before{content:"";position:absolute;left:-9px;top:4px;width:16px;height:16px;border-radius:50%;background:var(--green);border:4px solid var(--paper)}
        .step h3{font-size:23px;margin-bottom:7px}
        .step p{color:var(--muted);margin:0;max-width:690px}
        .adv-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
        .adv-card{background:var(--surface);border:1px solid var(--line);padding:25px 19px;min-height:220px;border-radius:var(--radius-sm)}
        .adv-card:nth-child(2),.adv-card:nth-child(5){transform:translateY(24px)}
        .adv-card:nth-child(3),.adv-card:nth-child(6){background:var(--deep);color:#fff}
        .adv-card b{font:700 26px/1 Georgia,serif;color:var(--orange)}
        .adv-card h3{font-size:18px;margin:19px 0 10px}
        .adv-card p{font-size:13px;color:var(--muted);margin:0}
        .adv-card:nth-child(3) p,.adv-card:nth-child(6) p{color:#c3ccc5}
        .products{background:#e8ebe1}
        .product-list{display:grid;grid-template-columns:1.15fr .85fr .85fr;gap:18px}
        .product-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
        .product-card:first-child{grid-row:span 2}
        .product-card img{height:205px;width:100%;object-fit:cover}
        .product-card:first-child img{height:330px}
        .product-body{padding:23px}
        .tag{display:inline-block;padding:5px 9px;background:#e1e9bd;color:#5e7311;border-radius:5px;font-size:12px;font-weight:800}
        .product-body h3{font-size:23px;margin:13px 0 10px}
        .product-body p{font-size:14px;color:var(--muted);margin:0 0 17px}
        .text-link{font-weight:800;color:var(--green-dark);font-size:14px}
        .text-link:hover{color:var(--orange)}
        .proof{background:var(--surface)}
        .proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
        .proof-list{border-top:1px solid var(--line)}
        .proof-row{display:flex;justify-content:space-between;gap:30px;padding:19px 0;border-bottom:1px solid var(--line)}
        .proof-row span{color:var(--muted);text-align:right}
        .dark-case{background:var(--deep);color:#fff}
        .dark-case .section-kicker{color:var(--green)}
        .case-layout{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
        .case-layout p{color:#bfc9c1}
        .case-flow{display:flex;gap:0;align-items:stretch}
        .case-node{flex:1;padding:20px 14px;border:1px solid #465249;font-size:14px}
        .case-node:not(:last-child){border-right:0}
        .case-node b{display:block;color:var(--green);margin-bottom:16px}
        .stories{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .story-card{padding:26px;background:#fffefa;border-top:4px solid var(--orange);box-shadow:0 6px 22px rgba(28,36,30,.06)}
        .story-card h3{font-size:20px;margin:11px 0}
        .story-card p{font-size:14px;color:var(--muted);margin:0}
        .stats{background:var(--green)}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
        .stat{border-left:1px solid rgba(32,37,34,.3);padding-left:25px}
        .stat strong{display:block;font:800 43px/1 "Arial Narrow",Arial,sans-serif;letter-spacing:-.05em}
        .stat span{font-size:14px;display:block;margin-top:10px}
        .quotes{background:#f0eee8}
        .quote-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:15px}
        .quote{padding:28px;background:var(--surface);min-height:205px;border-radius:var(--radius-sm)}
        .quote:first-child{background:var(--deep);color:#fff}
        .quote p{font-size:18px;line-height:1.65;margin:0 0 24px}
        .quote small{color:var(--muted)}
        .quote:first-child small{color:#bdc9bf}
        .scenes{background:var(--surface)}
        .scene-map{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:2px solid var(--ink)}
        .scene{padding:24px 18px;border-right:1px solid var(--line);min-height:155px}
        .scene:last-child{border-right:0}
        .scene h3{font-size:18px;margin-bottom:10px}
        .scene p{font-size:13px;color:var(--muted);margin:0}
        .news{background:#e8ebe1}
        .news-layout{display:grid;grid-template-columns:1.4fr .8fr;gap:22px}
        .news-list{background:var(--surface)}
        .news-item{display:flex;justify-content:space-between;gap:20px;padding:20px 24px;border-bottom:1px solid var(--line)}
        .news-item:last-child{border:0}
        .news-item a{font-weight:750}
        .news-item a:hover{color:var(--green-dark)}
        .news-item time{white-space:nowrap;color:var(--muted);font-size:13px}
        .news-feature{background:var(--deep);color:#fff;padding:30px}
        .news-feature h3{font-size:27px;margin:15px 0}
        .news-feature p{color:#bdc8bf;font-size:14px}
        .faq-list{max-width:860px}
        .accordion{background:transparent}
        .accordion-title{border:0;border-bottom:1px solid var(--line);font-size:18px;font-weight:750;padding:22px 42px 22px 0;color:var(--ink)}
        .accordion-title:hover{color:var(--green-dark);background:transparent}
        .accordion-content{border:0;background:transparent;color:var(--muted);padding:0 42px 22px 0}
        .accordion-item.is-active .accordion-title{color:var(--green-dark)}
        .final-cta{background:var(--orange);color:#fff;padding:72px 0}
        .final-cta .grid-x{align-items:center}
        .final-cta h2{font-size:clamp(30px,4vw,52px);max-width:650px}
        .final-cta p{max-width:650px;margin:16px 0 0;color:#fff0ea}
        .cta-form{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
        .cta-form input{height:50px;border:0;border-radius:7px;padding:0 15px;min-width:190px}
        .cta-form .button{height:50px;background:var(--deep);color:#fff}
        footer{background:var(--deep);color:#d5ded6;padding:58px 0 24px}
        .footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:40px}
        footer .brand{display:block;margin-bottom:16px}
        footer p,footer li{color:#98a59b;font-size:13px}
        footer p{max-width:300px}
        footer h3{font-size:15px;color:#fff;margin-bottom:18px}
        footer ul{list-style:none;margin:0;padding:0}
        footer li{margin-bottom:9px}
        footer a:hover{color:var(--green)}
        .copyright{border-top:1px solid #3b463e;margin-top:42px;padding-top:20px;color:#829087;font-size:12px;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:1024px){
            :root{--space:78px}
            .adv-grid{grid-template-columns:repeat(3,1fr)}
            .product-list{grid-template-columns:1fr 1fr}
            .product-card:first-child{grid-row:auto}
            .product-card:first-child img{height:205px}
            .scene-map{grid-template-columns:repeat(3,1fr)}
            .scene:nth-child(3){border-right:0}
            .scene:nth-child(n+4){border-top:1px solid var(--line)}
        }
        @media(max-width:768px){
            .top-line{display:none}
            .main-nav .grid-x{min-height:62px}
            .menu-toggle{display:block;margin-left:auto}
            .nav-links{display:none;position:absolute;top:62px;left:0;right:0;background:var(--surface);padding:12px 24px 20px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
            .nav-links.is-open{display:flex}
            .nav-links a{padding:13px 12px}
            .nav-contact{margin-left:0}
            .hero,.orbit{min-height:650px}
            .hero-content{padding:82px 0 100px}
            .pain-layout,.story-grid,.proof-grid,.case-layout,.news-layout{grid-template-columns:1fr;gap:35px}
            .solution-card:nth-child(2),.solution-card:nth-child(4),.adv-card:nth-child(2),.adv-card:nth-child(5){transform:none}
            .architecture{grid-template-columns:1fr 1fr}
            .quote-grid{grid-template-columns:1fr}
            .stats-grid{grid-template-columns:1fr 1fr;gap:20px}
            .scene-map{grid-template-columns:1fr 1fr}
            .scene:nth-child(2n){border-right:0}
            .scene:nth-child(n+3){border-top:1px solid var(--line)}
            .footer-grid{grid-template-columns:1fr 1fr}
            .cta-form{justify-content:flex-start;margin-top:28px}
        }
        @media(max-width:520px){
            body{font-size:15px}
            .grid-container{padding-left:18px;padding-right:18px}
            :root{--space:62px}
            h1{font-size:40px}
            .hero-intro{font-size:16px}
            .issue-wall,.solution-layout,.architecture,.adv-grid,.product-list,.stats-grid,.scene-map,.footer-grid{grid-template-columns:1fr}
            .architecture .arch-item{min-height:auto}
            .adv-card:nth-child(2),.adv-card:nth-child(5){transform:none}
            .case-flow{display:grid;grid-template-columns:1fr}
            .case-node{border-right:1px solid #465249!important;border-bottom:0}
            .case-node:last-child{border-bottom:1px solid #465249}
            .stories{grid-template-columns:1fr}
            .scene:nth-child(n){border-right:0}
            .scene:nth-child(n+2){border-top:1px solid var(--line)}
            .news-item{display:block}
            .news-item time{display:block;margin-top:7px}
            .cta-form input,.cta-form .button{width:100%}
            .copyright{display:block}
            .copyright span{display:block;margin-top:8px}
        }

/* roulang page: category1 */
:root{
 --ink:#202522;--muted:#69716b;--paper:#f4f3ee;--surface:#fffefa;--line:#d9ddd5;
 --deep:#18201c;--green:#b8d947;--green-dark:#7f9d16;--orange:#ee7747;
 --radius:16px;--radius-sm:9px;--shadow:0 16px 42px rgba(24,32,28,.09);
 --container:1220px;--space:88px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px}
.top-line{background:var(--deep);color:#d9e1d9;font-size:13px}
.top-line .grid-x{align-items:center;min-height:42px}
.brand{display:inline-flex;align-items:center;font-size:21px;font-weight:850;letter-spacing:-.04em}
.top-line .brand{color:#fff}
.brand em{font-style:normal;color:var(--green);margin-left:7px}
.top-tools{display:flex;justify-content:flex-end;align-items:center;gap:20px}
.top-tools a:hover{color:var(--green)}
.main-nav{position:sticky;top:0;z-index:30;background:rgba(255,254,250,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.main-nav .grid-x{min-height:68px;align-items:center}
.nav-links{display:flex;align-items:center;justify-content:flex-end;gap:4px}
.nav-links a{padding:10px 12px;border-radius:8px;font-size:13px;font-weight:750;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{background:var(--ink);color:#fff}
.nav-links .nav-contact{background:var(--green);color:var(--ink);margin-left:7px}
.nav-links .nav-contact:hover{background:#d2ee64;color:var(--ink)}
.menu-toggle{display:none;border:0;background:var(--ink);color:#fff;padding:10px 13px;border-radius:8px;font-weight:800}
.mobile-menu{display:none;background:var(--surface);border-bottom:1px solid var(--line);padding:12px 24px 18px}
.mobile-menu a{display:block;padding:11px 7px;border-bottom:1px solid var(--line);font-weight:750}
.mobile-menu a:last-child{border:0}
.mobile-menu a.active{color:var(--green-dark)}
section{padding:var(--space) 0}
.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--green-dark);font-size:12px;line-height:1;letter-spacing:.12em;font-weight:850}
.section-kicker:before{content:"";width:22px;height:2px;background:var(--orange)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:clamp(27px,3.2vw,43px);line-height:1.25;letter-spacing:-.045em;margin:14px 0 14px}
.section-head p{margin:0;color:var(--muted);font-size:16px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:47px;padding:11px 21px;border:1px solid transparent;border-radius:8px;font-size:15px;font-weight:800;transition:transform .25s ease,background .25s ease,border-color .25s ease}
.button.primary{background:var(--green);color:var(--ink)}
.button.primary:hover{background:#d2ee64;transform:translateY(-2px)}
.button.secondary{background:transparent;border-color:var(--ink);color:var(--ink)}
.button.secondary:hover{background:var(--ink);color:#fff}
.button:active{transform:translateY(0)}
.button[disabled]{opacity:.48;cursor:not-allowed}
a:focus,button:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(184,217,71,.65);outline-offset:3px}
.category-band{position:relative;overflow:hidden;padding:78px 0 72px;background:var(--deep);color:#fff}
.category-band:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,32,28,.96),rgba(24,32,28,.76)),url('/assets/images/backpic/back-2.webp') center/cover}
.category-band .grid-container{position:relative}
.page-no{font:700 15px/1 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--green);letter-spacing:.13em}
.category-band h1{max-width:830px;margin:17px 0 17px;font-size:clamp(36px,5vw,66px);line-height:1.12;letter-spacing:-.065em}
.category-band p{max-width:720px;margin:0;color:#d4ddd5;font-size:17px;line-height:1.9}
.category-meta{margin-top:30px;display:flex;flex-wrap:wrap;gap:9px}
.category-meta span,.tag{display:inline-flex;align-items:center;border-radius:5px;padding:5px 9px;font-size:12px;font-weight:800}
.category-meta span{border:1px solid rgba(255,255,255,.3);color:#e4ebe4}
.scene-layout{display:grid;grid-template-columns:.88fr 1.12fr;gap:58px;align-items:center}
.scene-image{position:relative}
.scene-image img{width:100%;height:440px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.image-note{position:absolute;left:20px;right:20px;bottom:20px;padding:18px 20px;background:rgba(24,32,28,.91);color:#fff;border-left:4px solid var(--green)}
.image-note strong{display:block;font-size:17px}
.image-note span{font-size:13px;color:#c5d0c7}
.scene-track{border-left:1px solid var(--line);padding-left:28px}
.track-row{position:relative;padding:0 0 24px}
.track-row:before{content:"";position:absolute;left:-35px;top:7px;width:13px;height:13px;border-radius:50%;background:var(--green);border:3px solid var(--paper)}
.track-row:last-child{padding-bottom:0}
.track-row b{display:block;font-size:18px;margin-bottom:5px}
.track-row p{margin:0;color:var(--muted);font-size:14px}
.product-section{background:#ecece5}
.filter-bar{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:24px}
.filter-bar span{padding:7px 12px;border:1px solid var(--line);border-radius:99px;background:var(--surface);font-size:13px;font-weight:750}
.filter-bar span:first-child{border-color:var(--green-dark);background:#e5efbc;color:#576c0f}
.solution-list{border-top:1px solid var(--line)}
.solution-item{display:grid;grid-template-columns:70px 1.25fr 1.3fr .74fr;gap:26px;align-items:center;padding:26px 7px;border-bottom:1px solid var(--line)}
.solution-num{font:700 26px/1 Georgia,serif;color:var(--orange)}
.solution-item h3{margin:0 0 7px;font-size:21px;line-height:1.32}
.solution-item p{margin:0;color:var(--muted);font-size:14px}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{background:#e1e9bd;color:#5c7110}
.text-link{font-size:14px;font-weight:850;color:var(--green-dark);white-space:nowrap}
.text-link:hover{color:var(--orange)}
.architecture{display:grid;grid-template-columns:1fr 1.2fr;gap:22px}
.arch-side{padding:31px;background:var(--deep);color:#fff;border-radius:var(--radius)}
.arch-side h2{font-size:31px;line-height:1.28;margin:12px 0}
.arch-side p{color:#c7d0c8;margin:0}
.arch-stack{display:grid;gap:10px}
.arch-row{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:20px 23px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm)}
.arch-row strong{color:var(--orange);font-size:16px}
.arch-row span{color:var(--muted);font-size:14px}
.process-wrap{position:relative;padding-top:5px}
.process-wrap:before{content:"";position:absolute;top:37px;left:7%;right:7%;height:1px;background:var(--line)}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.process-card{position:relative;padding:0 15px}
.process-index{display:flex;align-items:center;justify-content:center;width:64px;height:64px;border:1px solid var(--line);border-radius:50%;background:var(--surface);font:700 21px/1 Georgia,serif;color:var(--orange);margin-bottom:20px}
.process-card h3{font-size:18px;margin:0 0 8px}
.process-card p{margin:0;color:var(--muted);font-size:14px}
.proof-section{background:var(--surface)}
.proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:58px;align-items:start}
.proof-grid h2{font-size:33px;line-height:1.28;margin:13px 0}
.proof-grid>div>p{color:var(--muted);margin:0}
.proof-list{border-top:1px solid var(--line)}
.proof-row{display:grid;grid-template-columns:170px 1fr;gap:25px;padding:18px 0;border-bottom:1px solid var(--line)}
.proof-row strong{font-size:15px}
.proof-row span{font-size:14px;color:var(--muted)}
.faq-section{background:#e9ebe2}
.accordion{margin:0;background:transparent}
.accordion-item{margin-bottom:10px;border:1px solid var(--line);background:var(--surface)}
.accordion-title{border:0;color:var(--ink);padding:19px 51px 19px 20px;font-size:16px;font-weight:800;line-height:1.45}
.accordion-title:hover,.accordion-title:focus{background:#f5f7ee;color:var(--ink)}
.accordion-title:before{color:var(--green-dark);font-size:24px;font-weight:400;right:19px;margin-top:-15px}
.accordion-content{border:0;padding:0 20px 20px;color:var(--muted);font-size:14px;line-height:1.85}
.cta-section{padding:74px 0;background:var(--deep);color:#fff}
.cta-box{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}
.cta-box h2{font-size:clamp(28px,3.5vw,45px);line-height:1.25;margin:13px 0}
.cta-box p{margin:0;color:#c7d0c8;max-width:670px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-section .button.secondary{border-color:#aab7ac;color:#fff}
.cta-section .button.secondary:hover{background:#fff;color:var(--ink)}
footer{background:#111713;color:#c6d0c7;padding:63px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.35fr .9fr .9fr 1.25fr;gap:34px}
footer .brand{color:#fff;margin-bottom:13px}
footer p{font-size:14px;margin:0;color:#aeb9af}
footer h3{font-size:14px;color:#fff;margin:3px 0 15px}
footer ul{list-style:none;margin:0;padding:0}
footer li{font-size:13px;margin-bottom:9px;color:#aeb9af}
footer li a:hover{color:var(--green)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;color:#819087;font-size:12px}
@media(max-width:1024px){
 .nav-links a{padding:10px 8px;font-size:12px}.solution-item{grid-template-columns:55px 1fr 1.1fr}.solution-item .text-link{grid-column:2/4}
 .footer-grid{grid-template-columns:1.3fr 1fr 1fr}.footer-grid>div:last-child{grid-column:1/-1}
}
@media(max-width:768px){
 :root{--space:62px}.top-tools{gap:12px;font-size:12px}.nav-links{display:none}.menu-toggle{display:inline-flex}
 .mobile-menu.open{display:block}.category-band{padding:60px 0}.scene-layout,.architecture,.proof-grid{grid-template-columns:1fr;gap:32px}
 .scene-image img{height:320px}.solution-item{grid-template-columns:46px 1fr;gap:12px 18px}.solution-item>p,.solution-item .tags{grid-column:2}.solution-item .text-link{grid-column:2}
 .process-wrap:before{display:none}.process-grid{grid-template-columns:1fr 1fr;gap:28px}.arch-row{grid-template-columns:1fr;gap:7px}
 .cta-box{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:29px}
}
@media(max-width:520px){
 .grid-container{padding-left:18px;padding-right:18px}.top-line .cell.small-6:first-child{width:100%}.top-line .cell.small-6:last-child{display:none}
 .main-nav .grid-x{min-height:61px}.brand{font-size:18px}.category-band h1{font-size:36px}.category-band p{font-size:15px}
 .section-head h2{font-size:29px}.solution-item h3{font-size:18px}.filter-bar{gap:7px}.filter-bar span{font-size:12px;padding:6px 9px}
 .process-grid{grid-template-columns:1fr}.process-card{display:grid;grid-template-columns:64px 1fr;column-gap:16px}.process-index{grid-row:span 2}.process-card p{grid-column:2}
 .proof-row{grid-template-columns:1fr;gap:5px}.cta-actions{display:grid;grid-template-columns:1fr}.cta-actions .button{width:100%}
 .footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:6px}
}

/* roulang page: category2 */
:root{
 --ink:#202522;--muted:#69716b;--paper:#f4f3ee;--surface:#fffefa;--line:#d9ddd5;
 --deep:#18201c;--green:#b8d947;--green-dark:#7f9d16;--orange:#ee7747;
 --radius:16px;--radius-sm:9px;--shadow:0 16px 42px rgba(24,32,28,.09);
 --container:1220px;--space:82px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none;transition:color .25s ease,background .25s ease,transform .25s ease,border-color .25s ease}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px}
.top-line{background:var(--deep);color:#d6ddd7}
.top-line .grid-x{min-height:42px;align-items:center}
.brand{font-size:21px;font-weight:800;letter-spacing:-.04em;color:#fff}
.brand em{font-style:normal;color:var(--green)}
.top-tools{display:flex;justify-content:flex-end;align-items:center;gap:18px;font-size:13px}
.top-tools a:hover{color:var(--green)}
.main-nav{background:rgba(255,254,250,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(12px)}
.main-nav .grid-x{min-height:68px;align-items:center}
.nav-links{display:flex;gap:4px;align-items:center;justify-content:flex-end}
.nav-links a{padding:10px 13px;border-radius:8px;font-size:14px;font-weight:700;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{background:var(--ink);color:#fff}
.nav-contact{background:var(--green)!important;color:var(--ink)!important;margin-left:7px}
.nav-contact:hover{background:#d1ec63!important;color:var(--ink)!important}
.menu-toggle{display:none;background:var(--ink);color:#fff;border:0;border-radius:8px;padding:10px 13px;font-weight:700}
.mobile-panel{display:none;background:var(--surface);border-bottom:1px solid var(--line);padding:10px 24px 18px}
.mobile-panel a{display:block;padding:11px 4px;border-bottom:1px solid var(--line);font-weight:700}
.mobile-panel.open{display:block}
section{padding:var(--space) 0}
.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--green-dark);font-size:12px;letter-spacing:.12em;font-weight:800}
.section-kicker:before{content:"";display:block;width:22px;height:3px;background:var(--orange)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:clamp(28px,3.3vw,44px);letter-spacing:-.045em;line-height:1.25;margin:12px 0 15px}
.section-head p{margin:0;color:var(--muted);font-size:16px}
.page-intro{padding:72px 0 66px;background:var(--deep);color:#fff;position:relative;overflow:hidden}
.page-intro:after{content:"02";position:absolute;right:8%;bottom:-60px;color:rgba(184,217,71,.11);font:bold 210px/1 Georgia,serif}
.breadcrumb{font-size:13px;color:#b6c1b8;margin-bottom:25px}
.breadcrumb a:hover{color:var(--green)}
.page-intro h1{position:relative;z-index:1;max-width:850px;margin:0 0 18px;font-size:clamp(38px,5.2vw,67px);letter-spacing:-.06em;line-height:1.13}
.page-intro p{position:relative;z-index:1;max-width:750px;margin:0;color:#d4ddd5;font-size:18px;line-height:1.9}
.page-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px;position:relative;z-index:1}
.meta-pill,.tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:5px;font-size:12px;font-weight:800}
.meta-pill{border:1px solid rgba(255,255,255,.26);color:#e1e8df}
.tag{background:#e2eabd;color:#5d7112}
.scene-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:center}
.scene-image{position:relative}
.scene-image img{width:100%;height:390px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.image-note{position:absolute;right:-16px;bottom:22px;background:var(--green);padding:15px 18px;max-width:205px;color:var(--ink);font-size:13px;font-weight:800;line-height:1.55}
.flow-stack{border-top:1px solid var(--line)}
.flow-item{display:grid;grid-template-columns:58px 1fr;gap:18px;padding:19px 0;border-bottom:1px solid var(--line)}
.flow-no{font:700 25px/1 Georgia,serif;color:var(--orange)}
.flow-item h3{font-size:19px;margin:0 0 5px}
.flow-item p{margin:0;color:var(--muted);font-size:14px}
.filter-row{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:25px}
.filter-row span{padding:7px 13px;border:1px solid var(--line);background:var(--surface);border-radius:99px;color:var(--muted);font-size:13px;font-weight:700}
.filter-row span:first-child{border-color:var(--green-dark);background:#e6efc1;color:#53680c}
.solution-list{border-top:1px solid var(--line)}
.solution-row{display:grid;grid-template-columns:74px 1.2fr 1.2fr .72fr;gap:24px;align-items:center;background:var(--surface);padding:25px 22px;border:1px solid var(--line);border-top:0}
.solution-row:hover{position:relative;z-index:1;transform:translateX(5px);border-color:#b0c474;box-shadow:var(--shadow)}
.solution-index{font:700 30px/1 Georgia,serif;color:var(--orange)}
.solution-row h3{margin:0 0 8px;font-size:21px;line-height:1.35}
.solution-row p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.solution-row .text-link{text-align:right}
.text-link{font-weight:800;color:var(--green-dark);font-size:14px}
.text-link:hover{color:var(--orange)}
.architecture{background:#e9ebe4}
.arch-grid{display:grid;grid-template-columns:.8fr 1.1fr .9fr;gap:16px;align-items:stretch}
.arch-card{padding:28px 24px;background:var(--surface);border:1px solid var(--line)}
.arch-card.dark{background:var(--deep);color:#fff;border-color:var(--deep)}
.arch-card h3{font-size:22px;margin:15px 0 13px}
.arch-card p{margin:0;color:var(--muted);font-size:14px}
.arch-card.dark p{color:#c9d2ca}
.arch-card ul{list-style:none;padding:0;margin:19px 0 0}
.arch-card li{padding:9px 0;border-top:1px solid var(--line);font-size:14px}
.arch-card.dark li{border-color:#39433d}
.process-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:var(--surface);border:1px solid var(--line)}
.process-step{position:relative;padding:28px 23px;min-height:235px;border-right:1px solid var(--line)}
.process-step:last-child{border-right:0}
.process-step b{display:block;margin-bottom:30px;color:var(--orange);font:700 30px/1 Georgia,serif}
.process-step h3{font-size:19px;line-height:1.35;margin:0 0 10px}
.process-step p{margin:0;color:var(--muted);font-size:14px}
.proof-wrap{background:var(--deep);color:#fff}
.proof-wrap .section-kicker{color:var(--green)}
.proof-wrap .section-head p{color:#c4cec6}
.proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.proof-table{border-top:1px solid rgba(255,255,255,.25)}
.proof-row{display:flex;justify-content:space-between;gap:26px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.18)}
.proof-row strong{font-size:15px}
.proof-row span{color:#c4cec6;font-size:14px;text-align:right}
.proof-note{padding:30px;background:#26312b;border-left:4px solid var(--green)}
.proof-note h3{margin:0 0 13px;font-size:24px}
.proof-note p{color:#d0d8d2;margin:0;font-size:15px}
.accordion{background:transparent}
.accordion-item{border:1px solid var(--line);margin-bottom:10px;background:var(--surface)}
.accordion-title{color:var(--ink);font-size:17px;font-weight:800;padding:18px 50px 18px 20px;border:0}
.accordion-title:hover,.accordion-title:focus{background:#edf1df;color:var(--ink)}
.accordion-title:before{color:var(--green-dark);font-size:22px;right:20px}
.accordion-content{border:0;background:var(--surface);color:var(--muted);padding:0 20px 19px;font-size:15px;line-height:1.8}
.cta-section{padding:78px 0;background:var(--orange);color:#fff}
.cta-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center}
.cta-section h2{font-size:clamp(30px,3.7vw,48px);line-height:1.25;letter-spacing:-.05em;margin:0 0 12px}
.cta-section p{max-width:680px;margin:0;color:#fff6f1;font-size:17px}
.cta-actions{display:flex;justify-content:flex-end;gap:12px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 20px;border-radius:8px;font-weight:800;line-height:1.3;border:1px solid transparent}
.button.primary{background:var(--green);color:var(--ink)}
.button.primary:hover{background:#d7f06a;transform:translateY(-2px)}
.button.primary:active{transform:translateY(0);background:#a5c531}
.button.hollow{border-color:rgba(255,255,255,.7);color:#fff;background:transparent}
.button.hollow:hover{background:#fff;color:var(--orange);border-color:#fff}
.button:disabled{opacity:.45;cursor:not-allowed;transform:none}
a:focus,button:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(184,217,71,.65);outline-offset:3px}
footer{background:#111713;color:#c3cdc4;padding:57px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.4fr .82fr .82fr 1.2fr;gap:35px}
footer .brand{display:inline-block;margin-bottom:13px}
footer p{margin:0;font-size:14px;line-height:1.8}
footer h3{font-size:15px;color:#fff;margin:3px 0 12px}
footer ul{list-style:none;padding:0;margin:0}
footer li{font-size:13px;line-height:1.75;margin:5px 0}
footer li a:hover{color:var(--green)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #354038;margin-top:38px;padding-top:18px;font-size:12px;color:#89958c}
@media(max-width:1024px){
 .nav-links a{padding:9px 8px;font-size:13px}.solution-row{grid-template-columns:55px 1fr 1fr}.solution-row .text-link{grid-column:2/-1;text-align:left}.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
 :root{--space:61px}.top-tools{font-size:12px;gap:10px}.top-tools .assist{display:none}
 .nav-links{display:none}.menu-toggle{display:block}.main-nav .grid-x{min-height:62px}
 .page-intro{padding:55px 0}.page-intro:after{font-size:150px;right:2%}
 .scene-layout,.proof-grid,.cta-grid{grid-template-columns:1fr;gap:30px}.scene-image img{height:300px}.image-note{right:12px;bottom:12px}
 .solution-row{grid-template-columns:48px 1fr;gap:13px;padding:21px 17px}.solution-row p{grid-column:2}.solution-row .text-link{grid-column:2}
 .arch-grid{grid-template-columns:1fr}.process-track{grid-template-columns:1fr 1fr}.process-step:nth-child(2){border-right:0}.process-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .cta-actions{justify-content:flex-start}.footer-grid{gap:26px}
}
@media(max-width:520px){
 body{font-size:15px}.grid-container{padding-left:18px;padding-right:18px}.top-line .grid-container{padding-left:18px;padding-right:18px}
 .brand{font-size:18px}.top-tools a:first-child{font-size:11px}.page-intro h1{font-size:37px}.page-intro p{font-size:16px}
 .section-head h2{font-size:29px}.section-head p{font-size:15px}.scene-image img{height:250px}
 .process-track{grid-template-columns:1fr}.process-step,.process-step:nth-child(2){border-right:0;border-bottom:1px solid var(--line);min-height:auto}.process-step:last-child{border-bottom:0}
 .proof-row{display:block}.proof-row span{display:block;text-align:left;margin-top:6px}.cta-section{padding:58px 0}.cta-actions{display:grid;grid-template-columns:1fr}.button{width:100%}
 .footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin:5px 0}
}

/* roulang page: category3 */
:root{
      --ink:#202522;
      --muted:#69716b;
      --paper:#f4f3ee;
      --surface:#fffefa;
      --line:#d9ddd5;
      --deep:#18201c;
      --green:#b8d947;
      --green-dark:#7f9d16;
      --orange:#ee7747;
      --radius:16px;
      --radius-sm:9px;
      --shadow:0 16px 42px rgba(24,32,28,.09);
      --container:1220px;
      --space:78px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    .grid-container{max-width:var(--container);padding-left:24px;padding-right:24px}
    .top-line{background:var(--deep);color:#dce4db}
    .top-line .grid-x{min-height:43px;align-items:center}
    .brand{font-size:21px;font-weight:800;letter-spacing:-.04em;color:#fff}
    .brand em{font-style:normal;color:var(--green)}
    .top-tools{display:flex;gap:22px;justify-content:flex-end;font-size:13px}
    .top-tools a:hover{color:var(--green)}
    .main-nav{background:rgba(255,254,250,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .main-nav .grid-x{min-height:68px;align-items:center}
    .nav-links{display:flex;gap:5px;align-items:center;justify-content:flex-end}
    .nav-links a{padding:10px 14px;border-radius:8px;font-size:14px;font-weight:650}
    .nav-links a:hover,.nav-links a.active{background:var(--ink);color:#fff}
    .nav-contact{background:var(--green)!important;color:var(--ink)!important;margin-left:8px}
    .nav-contact:hover{background:#d1ec63!important}
    .menu-toggle{display:none;background:var(--ink);color:#fff;border:0;border-radius:8px;padding:10px 13px}
    .page-hero{position:relative;overflow:hidden;background:var(--deep);color:#fff;padding:92px 0 86px}
    .page-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,32,28,.95),rgba(24,32,28,.68)),url('/assets/images/backpic/back-6.webp') center/cover}
    .page-hero .grid-container{position:relative;z-index:1}
    .hero-copy{max-width:760px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--green-dark);font-size:12px;letter-spacing:.12em;font-weight:800}
    .eyebrow{color:var(--green);border-left:3px solid var(--green);padding-left:12px}
    h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
    h1{font-size:clamp(38px,5vw,68px);margin:20px 0 18px}
    h2{font-size:clamp(29px,3.4vw,46px);margin:12px 0 16px}
    h3{font-size:21px}
    .hero-copy p{font-size:18px;line-height:1.9;color:#dce4db;max-width:700px;margin:0}
    .hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}
    .hero-meta span,.tag{display:inline-block;padding:6px 10px;border-radius:5px;font-size:12px;font-weight:800}
    .hero-meta span{border:1px solid rgba(184,217,71,.55);color:var(--green)}
    section{padding:var(--space) 0}
    .section-head{max-width:730px;margin-bottom:40px}
    .section-head p{color:var(--muted);margin:0;font-size:17px}
    .scene-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:54px;align-items:center}
    .scene-image{position:relative}
    .scene-image img{width:100%;height:410px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
    .image-note{position:absolute;bottom:18px;left:18px;background:var(--green);padding:12px 15px;border-radius:8px;font-weight:800;font-size:13px}
    .issue-list{border-top:1px solid var(--line)}
    .issue-row{display:grid;grid-template-columns:50px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
    .issue-row b{font:700 25px/1 Georgia,serif;color:var(--orange)}
    .issue-row h3{margin:0 0 6px;font-size:20px}
    .issue-row p{margin:0;color:var(--muted);font-size:14px}
    .catalog{background:#e8ebe3}
    .catalog-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .diagnosis-card{background:var(--surface);border:1px solid var(--line);padding:25px;display:grid;grid-template-columns:78px 1fr;gap:20px;min-height:190px;border-radius:var(--radius-sm);transition:.25s ease}
    .diagnosis-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--green-dark)}
    .card-index{font:700 29px/1 Georgia,serif;color:var(--orange)}
    .diagnosis-card h3{margin:0 0 9px;font-size:21px}
    .diagnosis-card p{color:var(--muted);font-size:14px;margin:0 0 14px}
    .tag{background:#e1e9bd;color:#5e7311;margin-right:5px}
    .text-link{font-size:14px;font-weight:800;color:var(--green-dark)}
    .text-link:hover{color:var(--orange)}
    .capability{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
    .capability img{height:370px;width:100%;object-fit:cover;border-radius:var(--radius)}
    .cap-list{border-top:1px solid var(--line)}
    .cap-item{display:flex;justify-content:space-between;gap:24px;padding:19px 0;border-bottom:1px solid var(--line)}
    .cap-item strong{font-size:16px}
    .cap-item span{color:var(--muted);font-size:14px;text-align:right}
    .process{background:var(--deep);color:#fff}
    .process .section-kicker{color:var(--green)}
    .process .section-head p{color:#bec9bf}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #536057}
    .step{padding:27px 22px 10px 0;border-right:1px solid #536057;margin-right:22px}
    .step:last-child{border:0}
    .step-num{color:var(--green);font:700 30px/1 Georgia,serif}
    .step h3{font-size:19px;margin:20px 0 9px}
    .step p{font-size:14px;color:#bec9bf;margin:0}
    .proof-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
    .proof-layout img{height:360px;width:100%;object-fit:cover;border-radius:var(--radius)}
    .proof-table{border-top:1px solid var(--line)}
    .proof-row{display:flex;justify-content:space-between;gap:25px;padding:18px 0;border-bottom:1px solid var(--line)}
    .proof-row span{color:var(--muted);text-align:right}
    .proof-note{font-size:13px;color:var(--muted);margin-top:18px}
    .faq-section{background:#edf0e8}
    .accordion{background:transparent;margin:0;border-top:1px solid var(--line)}
    .accordion-item{border-bottom:1px solid var(--line)}
    .accordion-title{background:transparent;color:var(--ink);font-weight:750;font-size:17px;padding:21px 38px 21px 0}
    .accordion-title:hover{background:rgba(184,217,71,.13)}
    .accordion-content{background:transparent;color:var(--muted);font-size:15px;padding:0 38px 20px 0}
    .cta{background:var(--orange);padding:62px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0 0 10px;color:#fff;font-size:36px}
    .cta p{margin:0;color:#fff0e9}
    .button{border-radius:8px;padding:13px 22px;margin:0;font-weight:750;transition:.25s ease}
    .button.primary{background:var(--green);color:var(--ink)}
    .button.primary:hover{background:#d2ee64;transform:translateY(-2px)}
    .button.dark{background:var(--ink);color:#fff}
    .button.dark:hover{background:#344039;transform:translateY(-2px)}
    .button:focus,input:focus,textarea:focus,select:focus,button:focus,a:focus{outline:3px solid rgba(184,217,71,.55);outline-offset:3px}
    footer{background:var(--deep);color:#bec9bf;padding:62px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.25fr .8fr .8fr 1.15fr;gap:35px}
    footer .brand{display:inline-block;margin-bottom:14px}
    footer p,footer li{font-size:13px;line-height:1.9}
    footer p{max-width:270px}
    footer h3{font-size:16px;color:#fff;margin:0 0 15px}
    footer ul{list-style:none;margin:0;padding:0}
    footer li{margin-bottom:6px}
    footer a:hover{color:var(--green)}
    .copyright{border-top:1px solid #3c4940;margin-top:42px;padding-top:20px;display:flex;justify-content:space-between;gap:15px;font-size:12px;color:#89958c}
    @media(max-width:1024px){.catalog-grid{grid-template-columns:1fr 1fr}.diagnosis-card{grid-template-columns:52px 1fr}.footer-grid{grid-template-columns:1fr 1fr}.adv-grid{grid-template-columns:repeat(3,1fr)}}
    @media(max-width:768px){:root{--space:58px}.top-tools{gap:10px;font-size:12px}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 24px 20px;background:var(--surface);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}.nav-links.is-open{display:flex}.nav-links a{display:block}.menu-toggle{display:block;margin-left:auto}.page-hero{padding:70px 0}.scene-layout,.capability,.proof-layout{grid-template-columns:1fr;gap:32px}.steps{grid-template-columns:1fr 1fr;gap:20px}.step{border-right:0;border-bottom:1px solid #536057;padding-bottom:20px}.cta-inner{align-items:flex-start;flex-direction:column}.copyright{flex-direction:column}.hero-copy p{font-size:16px}}
    @media(max-width:520px){.grid-container{padding-left:18px;padding-right:18px}.top-line .grid-x{min-height:48px}.top-tools span:first-child{display:none}.brand{font-size:18px}h1{font-size:37px}.catalog-grid,.footer-grid,.steps{grid-template-columns:1fr}.diagnosis-card{grid-template-columns:42px 1fr;padding:20px}.scene-image img,.capability img,.proof-layout img{height:290px}.cap-item{display:block}.cap-item span{display:block;text-align:left;margin-top:5px}.cta h2{font-size:29px}.copyright{font-size:11px}}

/* roulang page: category4 */
:root{
 --ink:#202522;--muted:#69716b;--paper:#f4f3ee;--surface:#fffefa;--line:#d9ddd5;
 --deep:#18201c;--green:#b8d947;--green-dark:#7f9d16;--orange:#ee7747;
 --radius:16px;--radius-sm:9px;--shadow:0 16px 42px rgba(24,32,28,.09);
 --container:1220px;--space:78px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color .22s ease,background .22s ease,transform .22s ease,border-color .22s ease}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.27;letter-spacing:-.035em}
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px}
.top-line{background:var(--deep);color:#d5ddd6}
.top-line .grid-x{min-height:42px;align-items:center}
.brand{display:inline-block;color:#fff;font-size:21px;font-weight:850;letter-spacing:-.05em}
.brand em{font-style:normal;color:var(--green)}
.top-tools{display:flex;align-items:center;justify-content:flex-end;gap:18px;font-size:13px}
.top-tools a:hover{color:var(--green)}
.main-nav{position:sticky;top:0;z-index:30;background:rgba(255,254,250,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.main-nav .grid-x{min-height:68px;align-items:center}
.nav-links{display:flex;align-items:center;justify-content:flex-end;gap:4px}
.nav-links a{padding:10px 13px;border-radius:8px;font-size:14px;font-weight:720;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{background:var(--ink);color:#fff}
.nav-links .nav-contact{margin-left:7px;background:var(--green);color:var(--ink)}
.nav-links .nav-contact:hover{background:#d5ee70;color:var(--ink)}
.menu-toggle{display:none;border:0;border-radius:8px;background:var(--ink);color:#fff;padding:10px 13px;font-weight:700}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface)}
.mobile-panel a{display:block;padding:13px 24px;border-bottom:1px solid var(--line);font-size:15px;font-weight:700}
.mobile-panel a.active{color:var(--green-dark)}
.page-intro{padding:67px 0 42px;background:var(--surface);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-intro:after{content:"04";position:absolute;right:7%;top:-39px;color:#edf0e8;font:800 180px/1 Georgia,serif;z-index:0}
.page-intro .grid-container{position:relative;z-index:1}
.crumb{color:var(--green-dark);font-size:13px;font-weight:800;letter-spacing:.08em}
.crumb span{color:var(--muted);padding:0 8px}
.page-intro h1{max-width:840px;margin:17px 0 14px;font-size:clamp(34px,5vw,61px)}
.page-intro p{max-width:730px;margin:0;color:var(--muted);font-size:17px}
.status-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:29px}
.status-strip span{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#f6f7f1;padding:7px 11px;border-radius:999px;font-size:13px;font-weight:700}
.status-strip i{width:7px;height:7px;border-radius:50%;background:var(--green-dark);display:inline-block}
section{padding:var(--space) 0}
.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--green-dark);font-size:12px;font-weight:850;letter-spacing:.12em;text-transform:uppercase}
.section-kicker:before{content:"";display:block;width:24px;height:2px;background:var(--orange)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{margin:12px 0 14px;font-size:clamp(28px,3.4vw,45px)}
.section-head p{margin:0;color:var(--muted);font-size:16px}
.context-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:48px;align-items:stretch}
.context-image{min-height:415px;border-radius:var(--radius);overflow:hidden;position:relative;background:var(--deep)}
.context-image img{height:100%;width:100%;object-fit:cover;opacity:.76}
.context-image div{position:absolute;left:28px;right:28px;bottom:26px;color:#fff}
.context-image strong{display:block;color:var(--green);font-size:13px;letter-spacing:.11em}
.context-image h3{margin:9px 0 0;font-size:27px}
.scene-list{border-top:1px solid var(--line)}
.scene-row{display:grid;grid-template-columns:48px 1fr auto;gap:18px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line)}
.scene-no{color:var(--orange);font:700 26px/1 Georgia,serif}
.scene-row h3{font-size:19px;margin:0 0 4px}
.scene-row p{margin:0;color:var(--muted);font-size:14px}
.scene-tag{font-size:12px;background:#e5ecc7;color:#526411;padding:5px 9px;border-radius:5px;font-weight:800;white-space:nowrap}
.catalog{background:#eaede6}
.filter-bar{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:24px}
.filter-bar button{border:1px solid var(--line);padding:8px 13px;border-radius:999px;background:var(--surface);color:var(--muted);font-size:13px;font-weight:750}
.filter-bar button:hover,.filter-bar button.is-active{background:var(--deep);color:#fff;border-color:var(--deep)}
.solution-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.solution-item{position:relative;background:var(--surface);border:1px solid var(--line);padding:25px 25px 23px;min-height:250px;border-radius:var(--radius-sm)}
.solution-item:hover{border-color:var(--green-dark);transform:translateY(-4px);box-shadow:var(--shadow)}
.solution-item:nth-child(3n){background:#f3dfd2}
.solution-item .num{color:var(--orange);font:800 23px/1 Georgia,serif}
.solution-item h3{font-size:22px;margin:15px 0 10px}
.solution-item p{color:var(--muted);font-size:14px;margin:0 0 16px}
.tech-tags{display:flex;flex-wrap:wrap;gap:6px}
.tech-tags span{border:1px solid var(--line);padding:3px 7px;border-radius:4px;font-size:11px;font-weight:800;color:#5d665f;background:#fffefa}
.text-link{display:inline-block;margin-top:17px;font-size:14px;font-weight:850;color:var(--green-dark)}
.text-link:hover{color:var(--orange)}
.architecture{display:grid;grid-template-columns:1fr 1.05fr;gap:58px;align-items:center}
.arch-image img{width:100%;height:390px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.layer-stack{display:grid;gap:10px}
.layer{display:grid;grid-template-columns:132px 1fr;gap:20px;align-items:center;padding:18px 20px;border-left:4px solid var(--green-dark);background:var(--surface);border-bottom:1px solid var(--line)}
.layer:nth-child(2){border-left-color:var(--orange)}
.layer:nth-child(3){border-left-color:var(--ink)}
.layer b{font-size:15px}
.layer p{margin:0;color:var(--muted);font-size:14px}
.process-section{background:var(--deep);color:#fff}
.process-section .section-kicker{color:var(--green)}
.process-section .section-head p{color:#bbc5bd}
.process-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.process-step{position:relative;padding:0 23px 0 0;min-height:190px;border-top:1px solid rgba(255,255,255,.25)}
.process-step:not(:last-child):after{content:"";position:absolute;top:-3px;right:0;width:7px;height:7px;border-radius:50%;background:var(--green)}
.process-step b{display:block;margin-top:20px;color:var(--green);font:700 32px/1 Georgia,serif}
.process-step h3{font-size:19px;margin:18px 0 9px}
.process-step p{margin:0;color:#c2cbc3;font-size:14px}
.proof-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:48px;align-items:start}
.proof-note{background:#dfe9ae;padding:30px;border-radius:var(--radius)}
.proof-note h3{font-size:25px;margin:12px 0}
.proof-note p{font-size:15px;margin:0}
.proof-table{border-top:1px solid var(--line)}
.proof-row{display:grid;grid-template-columns:180px 1fr;gap:30px;padding:18px 0;border-bottom:1px solid var(--line)}
.proof-row strong{font-size:15px}
.proof-row span{color:var(--muted);font-size:14px}
.faq-wrap{max-width:920px}
.accordion{background:transparent}
.accordion-item{border:0;margin-bottom:10px}
.accordion-title{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);font-size:17px;font-weight:780;padding:18px 50px 18px 20px}
.accordion-title:hover,.accordion-title:focus{background:#edf0e8;color:var(--ink);border-color:var(--green-dark)}
.accordion-title:before{color:var(--green-dark);font-size:22px;right:20px}
.accordion-content{border:1px solid var(--line);border-top:0;background:#fafaf5;padding:17px 20px 20px;color:var(--muted);font-size:15px}
.cta{background:var(--deep);color:#fff;padding:72px 0}
.cta-box{display:grid;grid-template-columns:1.2fr .8fr;gap:34px;align-items:center}
.cta .section-kicker{color:var(--green)}
.cta h2{font-size:clamp(30px,4vw,48px);margin:13px 0}
.cta p{max-width:670px;color:#c7d0c8;margin:0}
.cta-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:12px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;margin:0;border:1px solid transparent;border-radius:8px;padding:12px 20px;font-size:15px;font-weight:800}
.button.primary{background:var(--green);color:var(--ink)}
.button.primary:hover{background:#d5ee70;transform:translateY(-2px)}
.button.hollow{border-color:rgba(255,255,255,.5);color:#fff}
.button.hollow:hover{border-color:var(--green);color:var(--green)}
.button:active{transform:translateY(1px)}
.button[disabled]{opacity:.45;cursor:not-allowed}
a:focus,button:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(184,217,71,.56);outline-offset:3px}
footer{background:#121813;color:#c5cec6;padding:58px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.28fr .72fr .78fr 1.2fr;gap:35px}
footer .brand{margin-bottom:15px}
footer p{color:#aeb9b0;font-size:14px;margin:0;max-width:300px}
footer h3{font-size:14px;color:#fff;margin:3px 0 14px}
footer ul{margin:0;padding:0;list-style:none}
footer li{font-size:13px;margin:7px 0;color:#adb8af}
footer li a:hover{color:var(--green)}
.copyright{display:flex;justify-content:space-between;gap:20px;margin-top:38px;padding-top:19px;border-top:1px solid rgba(255,255,255,.13);font-size:12px;color:#849087}
@media (max-width:1080px){
 .nav-links a{padding:10px 9px;font-size:13px}
 .context-grid,.architecture,.proof-layout{gap:32px}
 .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
 .footer-grid>div:last-child{grid-column:span 2}
}
@media (max-width:820px){
 :root{--space:60px}
 .nav-links{display:none}.menu-toggle{display:inline-flex}.mobile-panel.is-open{display:block}
 .page-intro{padding:54px 0 35px}.page-intro:after{font-size:120px;right:2%}
 .context-grid,.architecture,.proof-layout,.cta-box{grid-template-columns:1fr}
 .context-image{min-height:320px}
 .process-rail{grid-template-columns:repeat(2,1fr);gap:26px}
 .process-step{min-height:155px}
 .solution-list{grid-template-columns:1fr}
 .cta-actions{justify-content:flex-start}
 .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:last-child{grid-column:auto}
}
@media (max-width:520px){
 body{font-size:15px}.grid-container{padding-left:18px;padding-right:18px}
 .top-line .grid-x{min-height:39px}.top-tools{gap:10px;font-size:12px}
 .top-tools span{display:none}.brand{font-size:18px}
 .main-nav .grid-x{min-height:61px}
 .page-intro h1{font-size:34px}.page-intro p{font-size:15px}
 .status-strip{gap:7px}.status-strip span{font-size:11px;padding:6px 8px}
 .section-head{margin-bottom:27px}.section-head h2{font-size:29px}
 .scene-row{grid-template-columns:35px 1fr}.scene-tag{grid-column:2;justify-self:start}
 .solution-item{padding:22px;min-height:auto}
 .layer{grid-template-columns:1fr;gap:5px;padding:16px}
 .process-rail{grid-template-columns:1fr;gap:19px}.process-step{padding-bottom:14px;min-height:auto}
 .process-step:not(:last-child):after{display:none}
 .proof-row{grid-template-columns:1fr;gap:4px}
 .cta{padding:57px 0}.cta-actions{display:grid;grid-template-columns:1fr}.button{width:100%}
 .footer-grid{grid-template-columns:1fr;gap:25px}.copyright{display:block}.copyright span{display:block;margin:5px 0}
}