/* roulang page: index */
:root{
            --ink:#171b1f;
            --ink-soft:#30383d;
            --muted:#687277;
            --paper:#f4f1e8;
            --paper-deep:#e9e6dc;
            --white:#fffefa;
            --line:#d8d8cd;
            --green:#b8e36b;
            --green-deep:#86b745;
            --cyan:#55c7c0;
            --orange:#f47c48;
            --radius:8px;
            --shadow:0 14px 36px rgba(23,27,31,.08);
            --container:1220px;
        }
        *,*::before,*::after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.7;overflow-x:hidden}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
        .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
        .topbar{height:40px;background:var(--ink);color:#cbd2d0;font-size:12px}
        .topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
        .topbar p{margin:0}
        .topbar strong{color:var(--green);font-weight:700}
        .top-links{display:flex;gap:22px;align-items:center}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(244,241,232,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
        .nav-row{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:0}
        .brand-mark{width:31px;height:31px;position:relative;border:2px solid var(--ink);display:grid;place-items:center}
        .brand-mark::before,.brand-mark::after{content:"";position:absolute;background:var(--cyan)}
        .brand-mark::before{width:9px;height:9px;top:5px;left:5px}
        .brand-mark::after{width:9px;height:9px;right:5px;bottom:5px;background:var(--green)}
        .main-nav{display:flex;align-items:center;gap:4px}
        .main-nav a{padding:10px 14px;border:1px solid transparent;color:var(--ink-soft);font-size:14px;transition:.2s ease}
        .main-nav a:hover{color:var(--ink);background:var(--white);border-color:var(--line)}
        .main-nav a.active{background:var(--ink);color:var(--green);border-color:var(--ink)}
        .nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:var(--ink);border:1px solid var(--green);padding:11px 18px;border-radius:4px;font-weight:700;transition:.2s ease}
        .nav-cta:hover,.btn-primary:hover{background:#d0f38b;border-color:#d0f38b;transform:translateY(-2px)}
        .nav-cta:active,.btn-primary:active{transform:translateY(0)}
        .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:4px;color:var(--ink)}
        .menu-toggle span{display:block;width:19px;height:2px;background:currentColor;margin:4px auto}
        .hero{min-height:680px;position:relative;color:var(--white);display:flex;align-items:flex-end;background:#20272b;overflow:hidden}
        .hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .6s ease}
        .hero-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,19,21,.9) 0%,rgba(15,19,21,.65) 45%,rgba(15,19,21,.15) 100%)}
        .hero-slide.current{opacity:1}
        .hero-content{position:relative;z-index:1;padding:92px 0 74px;width:100%}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:1px;text-transform:uppercase}
        .eyebrow::before,.section-kicker::before{content:"";width:24px;height:2px;background:currentColor}
        .hero h1{max-width:760px;font-size:clamp(42px,5.5vw,78px);line-height:1.12;margin:20px 0 24px;font-weight:800;letter-spacing:0}
        .hero-copy{max-width:690px;color:#e2e8e3;font-size:18px;line-height:1.85;margin:0 0 32px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;color:var(--white);border:1px solid rgba(255,255,255,.55);border-radius:4px;transition:.2s ease}
        .btn-secondary:hover{border-color:var(--green);color:var(--green);background:rgba(184,227,107,.08)}
        .hero-meta{display:flex;gap:28px;margin-top:58px;flex-wrap:wrap}
        .hero-meta div{border-left:2px solid var(--green);padding-left:12px}
        .hero-meta b{display:block;font-size:23px;line-height:1.2;color:var(--green)}
        .hero-meta span{font-size:12px;color:#bac3bf}
        .slider-controls{position:absolute;z-index:2;right:24px;bottom:36px;display:flex;gap:8px;align-items:center}
        .slider-controls button{width:42px;height:42px;border:1px solid rgba(255,255,255,.45);color:#fff;background:rgba(23,27,31,.45);border-radius:4px}
        .slider-controls button:hover{background:var(--green);color:var(--ink);border-color:var(--green)}
        .slide-index{color:#d9e1dc;font-size:13px;margin:0 8px}
        section{padding:92px 0;border-bottom:1px solid var(--line)}
        .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:38px}
        .section-head h2{font-size:clamp(28px,3.2vw,45px);line-height:1.2;margin:12px 0 0;max-width:720px}
        .section-head p{max-width:470px;margin:0;color:var(--muted)}
        .signal-section{padding:22px 0;background:var(--white);border-bottom:1px solid var(--line)}
        .signal-list{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}
        .signal-item{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-soft)}
        .signal-dot{width:8px;height:8px;background:var(--green);display:inline-block}
        .signal-item:nth-child(2) .signal-dot{background:var(--cyan)}
        .signal-item:nth-child(3) .signal-dot{background:var(--orange)}
        .intro-grid{display:grid;grid-template-columns:5fr 7fr;gap:68px;align-items:center}
        .intro-copy h2{font-size:42px;line-height:1.25;margin:13px 0 20px}
        .intro-copy p{color:var(--muted);margin:0 0 24px}
        .check-list{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px}
        .check-list li{display:flex;gap:12px;align-items:flex-start;border-top:1px solid var(--line);padding-top:12px}
        .check-list i{font-style:normal;color:var(--green-deep);font-weight:800}
        .image-stage{position:relative}
        .image-stage img{width:100%;height:440px;object-fit:cover}
        .data-chip{position:absolute;right:-20px;bottom:28px;background:var(--ink);color:var(--white);padding:18px 20px;border-left:4px solid var(--green);box-shadow:var(--shadow)}
        .data-chip b{display:block;color:var(--green);font-size:28px;line-height:1.2}
        .data-chip span{font-size:12px;color:#c3cdca}
        .pain-section{background:var(--paper-deep)}
        .pain-layout{display:grid;grid-template-columns:4fr 8fr;gap:60px}
        .pain-layout h2{font-size:40px;line-height:1.25;margin:13px 0 18px}
        .pain-layout>div>p{color:var(--muted)}
        .diagnosis{border-top:2px solid var(--ink)}
        .diagnosis-row{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:20px;padding:20px 0;border-bottom:1px solid #c7c9bf;align-items:center}
        .diagnosis-row strong{font-size:16px}
        .diagnosis-row p{margin:0;color:var(--muted);font-size:14px}
        .status{justify-self:end;font-size:12px;padding:4px 9px;border:1px solid var(--orange);color:#a94d2c}
        .solution-section{background:var(--white)}
        .architecture{border:1px solid var(--line);display:grid;grid-template-columns:1fr 1.1fr 1fr;min-height:300px;background:#fbfaf5}
        .arch-layer{padding:30px;border-right:1px solid var(--line);position:relative}
        .arch-layer:last-child{border:0}
        .arch-layer:nth-child(2){background:var(--ink);color:var(--white)}
        .arch-number{font-size:12px;color:var(--orange);font-weight:800}
        .arch-layer:nth-child(2) .arch-number{color:var(--green)}
        .arch-layer h3{font-size:25px;margin:28px 0 12px}
        .arch-layer p{font-size:14px;color:var(--muted);margin:0}
        .arch-layer:nth-child(2) p{color:#c4ceca}
        .arch-ports{display:flex;gap:7px;flex-wrap:wrap;margin-top:24px}
        .arch-ports span{font-size:11px;padding:4px 8px;border:1px solid currentColor}
        .method-section{background:var(--paper)}
        .timeline{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border-top:2px solid var(--ink)}
        .step{padding:22px 18px 10px 0;position:relative}
        .step:not(:last-child){border-right:1px solid var(--line);padding-right:20px;margin-right:20px}
        .step::before{content:"";display:block;width:12px;height:12px;background:var(--green);border:3px solid var(--ink);position:absolute;top:-8px;left:0}
        .step-number{font-size:12px;color:var(--muted);font-weight:700}
        .step h3{font-size:17px;margin:15px 0 9px}
        .step p{font-size:13px;color:var(--muted);margin:0}
        .capability-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
        .capability-card{background:var(--white);border:1px solid var(--line);padding:24px;min-height:210px;transition:.2s ease}
        .capability-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--cyan)}
        .icon-box{width:38px;height:38px;background:var(--ink);color:var(--green);display:grid;place-items:center;font-weight:800;margin-bottom:20px}
        .capability-card h3{font-size:20px;margin:0 0 8px}
        .capability-card p{font-size:14px;color:var(--muted);margin:0 0 22px}
        .card-foot{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:11px;color:var(--muted);font-size:12px}
        .card-foot b{color:var(--ink)}
        .module-section{background:var(--paper-deep)}
        .module-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:14px}
        .module{min-height:290px;padding:28px;background:var(--white);border:1px solid var(--line);position:relative;overflow:hidden}
        .module:first-child{background:var(--ink);color:var(--white)}
        .module:first-child p{color:#c8d0cc}
        .module-num{font-size:46px;color:var(--cyan);line-height:1;font-weight:800}
        .module h3{font-size:24px;margin:32px 0 12px}
        .module p{font-size:14px;color:var(--muted);margin:0}
        .module-label{position:absolute;right:20px;top:25px;color:var(--orange);font-size:12px}
        .case-section{background:var(--ink);color:var(--white);border:0}
        .case-section .section-head p{color:#b8c2be}
        .case-grid{display:grid;grid-template-columns:7fr 5fr;gap:16px}
        .case-main{min-height:350px;background:url('/assets/images/191c2308eff80f3a') center/cover;position:relative;padding:32px;display:flex;flex-direction:column;justify-content:flex-end}
        .case-main::before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(23,27,31,.95),rgba(23,27,31,.1))}
        .case-main>*{position:relative}
        .case-main h3{font-size:29px;max-width:580px;margin:12px 0}
        .case-main p{color:#d1d9d5;max-width:560px;margin:0}
        .case-side{border:1px solid #495257;padding:28px;display:grid;gap:20px}
        .case-point{border-bottom:1px solid #414a4d;padding-bottom:18px}
        .case-point:last-child{border:0;padding-bottom:0}
        .case-point b{color:var(--green);font-size:25px;display:block}
        .case-point span{font-size:13px;color:#b8c2be}
        .story-section{background:var(--white)}
        .story-layout{display:grid;grid-template-columns:4fr 8fr;gap:60px}
        .story-intro h2{font-size:39px;line-height:1.25;margin:13px 0}
        .story-intro p{color:var(--muted);margin:0}
        .story-list{border-left:2px solid var(--ink)}
        .story-item{display:grid;grid-template-columns:150px 1fr;gap:24px;padding:0 0 28px 25px;position:relative}
        .story-item::before{content:"";position:absolute;left:-7px;top:4px;width:12px;height:12px;background:var(--cyan);border:2px solid var(--ink)}
        .story-item time{font-size:12px;color:var(--orange);font-weight:800}
        .story-item h3{font-size:19px;margin:0 0 6px}
        .story-item p{font-size:14px;color:var(--muted);margin:0}
        .stats-section{padding:58px 0;background:var(--green);border:0}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .stat{border-left:2px solid var(--ink);padding-left:20px}
        .stat strong{font-size:39px;line-height:1.1;display:block}
        .stat span{font-size:13px;color:#3e4a38}
        .quote-section{background:var(--paper)}
        .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
        .quote{background:var(--white);border:1px solid var(--line);padding:27px;min-height:220px}
        .quote blockquote{margin:0;font-size:17px;line-height:1.75}
        .quote footer{margin-top:26px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
        .quote footer b{display:block;color:var(--ink);font-size:14px}
        .scenario-section{background:var(--white)}
        .scenario-grid{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line)}
        .scenario{padding:22px 18px;min-height:180px;border-right:1px solid var(--line)}
        .scenario:last-child{border:0}
        .scenario em{font-style:normal;color:var(--orange);font-size:12px;font-weight:800}
        .scenario h3{font-size:18px;margin:18px 0 8px}
        .scenario p{font-size:13px;color:var(--muted);margin:0}
        .news-section{background:var(--paper-deep)}
        .news-layout{display:grid;grid-template-columns:7fr 5fr;gap:48px}
        .news-flow{border-top:2px solid var(--ink)}
        .news-item{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:19px 0;border-bottom:1px solid #c6c8bf}
        .news-item img{width:140px;height:90px;object-fit:cover;grid-row:span 2}
        .news-item time{font-size:12px;color:var(--orange)}
        .news-item h3{margin:0;font-size:18px}
        .news-item p{margin:4px 0 0;font-size:13px;color:var(--muted)}
        .hot-list{background:var(--ink);color:var(--white);padding:25px}
        .hot-list h3{margin:0 0 17px;color:var(--green);font-size:20px}
        .hot-list ol{margin:0;padding-left:23px}
        .hot-list li{padding:13px 0;border-bottom:1px solid #414a4d;color:#d9e1dd;font-size:14px}
        .hot-list li::marker{color:var(--cyan);font-weight:800}
        .metrics-section{background:var(--white)}
        .metric-panel{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line)}
        .metric{padding:25px 20px;border-right:1px solid var(--line)}
        .metric:last-child{border:0}
        .metric-title{font-size:13px;color:var(--muted);display:block}
        .metric strong{display:block;font-size:27px;margin:12px 0 9px}
        .metric-bar{height:5px;background:var(--paper-deep)}
        .metric-bar span{height:100%;display:block;background:var(--cyan)}
        .faq-section{background:var(--paper)}
        .faq-list{max-width:900px;border-top:2px solid var(--ink)}
        .faq-item{border-bottom:1px solid var(--line)}
        .faq-question{width:100%;border:0;background:transparent;display:flex;justify-content:space-between;gap:20px;text-align:left;padding:19px 0;font-weight:700;color:var(--ink)}
        .faq-question span:last-child{font-size:23px;font-weight:400;color:var(--orange);transition:.2s}
        .faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--muted);font-size:14px}
        .faq-answer p{margin:0 0 20px;max-width:780px}
        .faq-item.open .faq-answer{max-height:160px}
        .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
        .cta-section{background:var(--ink);color:var(--white);border:0;padding:82px 0}
        .cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:70px;align-items:start}
        .cta-copy h2{font-size:43px;line-height:1.2;margin:14px 0 18px}
        .cta-copy p{color:#bdc8c3;max-width:480px}
        .contact-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
        .field{display:flex;flex-direction:column;gap:6px}
        .field.full{grid-column:1/-1}
        .field label{font-size:12px;color:#b8c4bf}
        .field input,.field select,.field textarea{width:100%;background:#242c30;border:1px solid #4b5658;border-radius:4px;color:var(--white);padding:11px 12px;transition:.2s}
        .field textarea{min-height:102px;resize:vertical}
        .field input:hover,.field select:hover,.field textarea:hover{border-color:#82908a}
        .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);outline:2px solid rgba(184,227,107,.18)}
        .form-submit{grid-column:1/-1;display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:4px}
        .form-note{font-size:12px;color:#93a19c;margin:0}
        footer.site-footer{background:#101416;color:#b7c1bd;padding:52px 0 24px}
        .footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:42px;border-bottom:1px solid #343d40}
        .footer-brand{color:var(--white);font-size:19px;font-weight:800;margin-bottom:14px}
        .footer-col h3{font-size:13px;color:var(--green);margin:0 0 15px}
        .footer-col a{display:block;font-size:13px;margin:8px 0;color:#b7c1bd;transition:.2s}
        .footer-col a:hover{color:var(--green)}
        .footer-col p{font-size:13px;margin:8px 0}
        .footer-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:20px;font-size:12px;color:#81908b}
        .footer-bottom p{margin:0}
        @media(max-width:1024px){
            .main-nav a{padding:10px 8px;font-size:13px}
            .intro-grid,.story-layout{gap:35px}
            .scenario-grid{grid-template-columns:repeat(3,1fr)}
            .scenario:nth-child(3){border-right:0}
            .scenario:nth-child(-n+3){border-bottom:1px solid var(--line)}
            .metric-panel{grid-template-columns:repeat(3,1fr)}
            .metric:nth-child(3){border-right:0}
            .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
        }
        @media(max-width:768px){
            .container{width:min(calc(100% - 32px),var(--container))}
            .topbar{display:none}
            .site-header{position:relative}
            .nav-row{min-height:66px}
            .brand{font-size:17px}
            .brand-mark{width:28px;height:28px}
            .main-nav{position:absolute;display:none;left:0;right:0;top:66px;padding:10px 16px 18px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(23,27,31,.1);flex-direction:column;align-items:stretch}
            .main-nav.open{display:flex}
            .main-nav a,.nav-cta{min-height:44px;display:flex;align-items:center}
            .nav-cta{justify-content:center;margin-top:6px}
            .menu-toggle{display:block}
            .hero{min-height:650px}
            .hero-content{padding:72px 0 55px}
            .hero h1{font-size:43px}
            .hero-copy{font-size:16px}
            .hero-meta{margin-top:40px;gap:18px}
            section{padding:66px 0}
            .section-head{display:block;margin-bottom:28px}
            .section-head h2,.intro-copy h2,.pain-layout h2,.story-intro h2,.cta-copy h2{font-size:32px}
            .section-head p{margin-top:15px}
            .intro-grid,.pain-layout,.story-layout,.case-grid,.news-layout,.cta-grid{grid-template-columns:1fr;gap:30px}
            .image-stage img{height:300px}
            .data-chip{right:12px;bottom:18px}
            .architecture{grid-template-columns:1fr}
            .arch-layer{border-right:0;border-bottom:1px solid var(--line)}
            .arch-layer:last-child{border-bottom:0}
            .timeline{grid-template-columns:repeat(2,1fr);gap:20px;border-top:0}
            .step{border-top:2px solid var(--ink);padding-top:19px}
            .step:not(:last-child){border-right:0;padding-right:0;margin-right:0}
            .step::before{top:-8px}
            .capability-grid,.quote-grid{grid-template-columns:repeat(2,1fr)}
            .module-grid{grid-template-columns:1fr}
            .module{min-height:220px}
            .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
            .scenario-grid{grid-template-columns:repeat(2,1fr)}
            .scenario:nth-child(3){border-right:1px solid var(--line)}
            .scenario:nth-child(even){border-right:0}
            .scenario:nth-child(4),.scenario:nth-child(5){border-bottom:0}
            .scenario:nth-child(3){border-bottom:1px solid var(--line)}
            .metric-panel{grid-template-columns:repeat(2,1fr)}
            .metric:nth-child(2){border-right:0}
            .metric:nth-child(3){border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
            .metric:nth-child(4){border-bottom:1px solid var(--line)}
            .footer-top{grid-template-columns:1fr 1fr;gap:30px}
        }
        @media(max-width:520px){
            .hero h1{font-size:38px}
            .hero-actions a{width:100%}
            .slider-controls{right:16px;bottom:18px}
            .diagnosis-row{grid-template-columns:1fr;gap:7px}
            .status{justify-self:start}
            .capability-grid,.quote-grid,.scenario-grid,.metric-panel,.contact-form{grid-template-columns:1fr}
            .scenario,.scenario:nth-child(3),.scenario:nth-child(even){border-right:0;border-bottom:1px solid var(--line)}
            .scenario:last-child,.metric:last-child{border-bottom:0}
            .metric,.metric:nth-child(3){border-right:0;border-bottom:1px solid var(--line)}
            .metric:last-child{border-bottom:0}
            .news-item{grid-template-columns:92px 1fr;gap:12px}
            .news-item img{width:92px;height:75px}
            .story-item{grid-template-columns:1fr;gap:3px}
            .footer-top{grid-template-columns:1fr}
            .footer-bottom{display:block}
            .footer-bottom p{margin:7px 0}
        }

/* roulang page: category2 */
:root{
      --ink:#171b1f;
      --ink-soft:#30383d;
      --muted:#687277;
      --paper:#f4f1e8;
      --paper-deep:#e9e6dc;
      --white:#fffefa;
      --line:#d8d8cd;
      --green:#b8e36b;
      --green-deep:#86b745;
      --cyan:#55c7c0;
      --orange:#f47c48;
      --gold:#d6b85a;
      --radius:8px;
      --shadow:0 14px 36px rgba(23,27,31,.08);
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.7;overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(85,199,192,.45);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .topbar{height:40px;background:var(--ink);color:#cbd2d0;font-size:12px}
    .topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .topbar p{margin:0}
    .topbar strong{color:var(--green);font-weight:700}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(244,241,232,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav-row{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:0;white-space:nowrap}
    .brand-mark{width:31px;height:31px;position:relative;border:2px solid var(--ink);display:grid;place-items:center;flex:0 0 auto}
    .brand-mark::before,.brand-mark::after{content:"";position:absolute;background:var(--cyan)}
    .brand-mark::before{width:9px;height:9px;top:5px;left:5px}
    .brand-mark::after{width:9px;height:9px;right:5px;bottom:5px;background:var(--green)}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:10px 14px;border:1px solid transparent;color:var(--ink-soft);font-size:14px;transition:.2s ease}
    .main-nav a:hover{color:var(--ink);background:var(--white);border-color:var(--line)}
    .main-nav a.active{background:var(--ink);color:var(--green);border-color:var(--ink)}
    .nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:var(--ink);border:1px solid var(--green);padding:11px 18px;border-radius:4px;font-weight:700;transition:.2s ease}
    .nav-cta:hover,.btn-primary:hover{background:#d0f38b;border-color:#d0f38b;transform:translateY(-2px)}
    .nav-cta:active,.btn-primary:active{transform:translateY(0)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;color:var(--ink);border:1px solid var(--ink);border-radius:4px;background:transparent;font-weight:700;transition:.2s ease}
    .btn-secondary:hover{background:var(--ink);color:var(--green)}
    .btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border:1px solid var(--line);border-radius:4px;background:var(--white);color:var(--ink-soft);font-weight:700;transition:.2s ease}
    .btn-ghost:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}
    .btn-primary:disabled,.btn-secondary:disabled,.btn-ghost:disabled{opacity:.45;cursor:not-allowed;transform:none}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:4px;color:var(--ink)}
    .menu-toggle span{display:block;width:19px;height:2px;background:currentColor;margin:4px auto}
    main{background:var(--paper)}
    section{padding:86px 0;border-bottom:1px solid var(--line)}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:36px}
    .section-head h2{font-size:clamp(28px,3.2vw,44px);line-height:1.2;margin:12px 0 0;max-width:760px}
    .section-head p{max-width:500px;margin:0;color:var(--muted)}
    .section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:1px;text-transform:uppercase}
    .section-kicker::before{content:"";width:24px;height:2px;background:currentColor}
    .category-hero{position:relative;overflow:hidden;background:var(--ink);color:var(--white);padding:78px 0 58px;border-bottom:0}
    .category-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(23,27,31,.92) 0%,rgba(23,27,31,.74) 46%,rgba(23,27,31,.28) 100%),url("/assets/images/191c2308eff80f3a.webp") center/cover no-repeat}
    .category-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;background:linear-gradient(90deg,var(--gold),var(--green),var(--cyan))}
    .hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:end}
    .crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:#cbd2d0;font-size:13px;margin-bottom:18px}
    .crumb a{border-bottom:1px solid transparent}
    .crumb a:hover{border-color:var(--green);color:var(--green)}
    .category-hero h1{font-size:clamp(34px,5vw,62px);line-height:1.14;margin:0 0 22px;letter-spacing:0}
    .hero-summary{max-width:750px;color:#e4e9e5;font-size:18px;margin:0 0 28px;line-height:1.85}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .level-panel{background:rgba(15,19,21,.82);border:1px solid rgba(214,184,90,.5);padding:22px;box-shadow:0 18px 44px rgba(0,0,0,.26)}
    .level-title{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px}
    .level-title strong{font-size:18px}
    .level-badge{display:inline-flex;align-items:center;justify-content:center;width:58px;height:58px;border:1px solid var(--gold);color:var(--gold);font-weight:900;background:rgba(214,184,90,.08)}
    .level-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .level-item{border:1px solid rgba(255,255,255,.18);padding:12px;background:rgba(255,255,255,.05)}
    .level-item b{display:block;color:var(--green);font-size:22px;line-height:1.2}
    .level-item span{font-size:12px;color:#cbd2d0}
    .stage-tabs{padding:26px 0;background:var(--white)}
    .tabbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between}
    .tab-left{display:flex;gap:10px;flex-wrap:wrap}
    .filter-btn{border:1px solid var(--line);background:var(--paper);color:var(--ink-soft);padding:10px 14px;border-radius:4px;font-weight:700;transition:.2s ease}
    .filter-btn:hover,.filter-btn.active{background:var(--ink);border-color:var(--ink);color:var(--green)}
    .tab-note{color:var(--muted);font-size:13px}
    .toolchain-list{background:var(--paper)}
    .resource-wrap{display:grid;grid-template-columns:4fr 8fr;gap:42px;align-items:start}
    .resource-aside{position:sticky;top:136px;background:var(--ink);color:var(--white);padding:28px;border-left:4px solid var(--green)}
    .resource-aside h2{font-size:30px;line-height:1.25;margin:10px 0 14px}
    .resource-aside p{color:#cbd2d0;margin:0 0 22px}
    .mini-metrics{display:grid;gap:10px}
    .mini-metrics div{display:flex;justify-content:space-between;gap:18px;border-top:1px solid rgba(255,255,255,.15);padding-top:10px}
    .mini-metrics b{color:var(--green)}
    .resource-list{display:grid;gap:14px}
    .resource-row{display:grid;grid-template-columns:96px 1fr auto;gap:18px;align-items:center;background:var(--white);border:1px solid var(--line);padding:18px;transition:.2s ease}
    .resource-row:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#c7c9bf}
    .row-code{font-weight:900;color:var(--orange)}
    .row-main h3{margin:0 0 6px;font-size:20px}
    .row-main p{margin:0;color:var(--muted);font-size:14px}
    .row-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
    .tag,.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--paper);padding:5px 9px;border-radius:4px;color:var(--ink-soft);font-size:12px;font-weight:700}
    .badge.green{background:rgba(184,227,107,.18);border-color:rgba(134,183,69,.35);color:#4e7028}
    .badge.cyan{background:rgba(85,199,192,.14);border-color:rgba(85,199,192,.36);color:#246e69}
    .status{white-space:nowrap;color:var(--ink);font-weight:800;border-left:2px solid var(--green);padding-left:12px}
    .list-more{display:flex;justify-content:flex-end;margin-top:20px}
    .process-section{background:var(--white)}
    .process-track{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);background:var(--paper)}
    .process-step{padding:24px 18px;min-height:230px;border-right:1px solid var(--line);position:relative}
    .process-step:last-child{border-right:0}
    .process-step::before{content:attr(data-step);display:inline-grid;place-items:center;width:34px;height:34px;background:var(--ink);color:var(--green);font-weight:900;margin-bottom:18px}
    .process-step h3{font-size:18px;margin:0 0 10px;line-height:1.35}
    .process-step p{margin:0;color:var(--muted);font-size:14px}
    .process-step ul{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:6px;color:var(--ink-soft);font-size:13px}
    .process-step li::before{content:"•";color:var(--cyan);font-weight:900;margin-right:8px}
    .quality-section{background:var(--paper-deep)}
    .quality-grid{display:grid;grid-template-columns:6fr 6fr;gap:30px;align-items:stretch}
    .quality-card{background:var(--white);border:1px solid var(--line);padding:28px;display:grid;gap:18px}
    .quality-card img{width:100%;height:250px;object-fit:cover;border:1px solid var(--line)}
    .gate-list{display:grid;gap:12px}
    .gate-item{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:start;border-top:1px solid var(--line);padding-top:14px}
    .gate-item i{font-style:normal;width:42px;height:42px;display:grid;place-items:center;background:var(--green);font-weight:900;color:var(--ink)}
    .gate-item strong{display:block;margin-bottom:4px}
    .gate-item span{color:var(--muted);font-size:14px}
    .integration-section{background:var(--ink);color:var(--white)}
    .integration-section .section-head p{color:#cbd2d0}
    .integration-map{display:grid;grid-template-columns:3fr 1.2fr 3fr;gap:18px;align-items:center}
    .map-column{display:grid;gap:12px}
    .map-node{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.05);padding:18px}
    .map-node h3{margin:0 0 8px;font-size:18px;color:var(--green)}
    .map-node p{margin:0;color:#cbd2d0;font-size:14px}
    .map-bus{min-height:330px;border:1px solid rgba(184,227,107,.45);display:grid;place-items:center;text-align:center;padding:20px;background:rgba(184,227,107,.06)}
    .map-bus b{display:block;font-size:28px;color:var(--gold);line-height:1.2}
    .map-bus span{display:block;margin-top:10px;color:#dfe6df;font-size:13px}
    .interface-note{margin-top:24px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .interface-note div{border-top:2px solid var(--cyan);background:rgba(255,255,255,.04);padding:14px;color:#dfe6df;font-size:13px}
    .metrics-section{background:var(--white)}
    .metric-table{border:1px solid var(--line);background:var(--paper)}
    .metric-row{display:grid;grid-template-columns:2fr 2.2fr 1.4fr 1.6fr;gap:0;border-bottom:1px solid var(--line)}
    .metric-row:last-child{border-bottom:0}
    .metric-row > div{padding:16px;border-right:1px solid var(--line)}
    .metric-row > div:last-child{border-right:0}
    .metric-row.head{background:var(--ink);color:var(--green);font-weight:900}
    .metric-row:not(.head) div{color:var(--ink-soft)}
    .metric-row strong{color:var(--ink)}
    .faq-section{background:var(--paper)}
    .faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:42px}
    .faq-intro{background:var(--white);border:1px solid var(--line);padding:28px;align-self:start}
    .faq-intro h2{font-size:32px;line-height:1.25;margin:10px 0 12px}
    .faq-intro p{margin:0;color:var(--muted)}
    .faq-list{display:grid;gap:12px}
    .faq-item{border:1px solid var(--line);background:var(--white)}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 20px;border:0;background:transparent;text-align:left;color:var(--ink);font-weight:800}
    .faq-question span:last-child{font-size:22px;color:var(--green-deep)}
    .faq-answer{display:none;padding:0 20px 20px;color:var(--muted)}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .contact-section{background:var(--ink);color:var(--white);padding:78px 0}
    .contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
    .contact-copy h2{font-size:clamp(30px,4vw,48px);line-height:1.18;margin:12px 0 18px}
    .contact-copy p{color:#d4ddd8;margin:0 0 26px}
    .contact-points{display:grid;gap:10px}
    .contact-points div{border-left:2px solid var(--green);padding-left:12px;color:#dce5df}
    .contact-form{background:var(--white);color:var(--ink);border:1px solid rgba(255,255,255,.16);padding:26px;box-shadow:0 20px 52px rgba(0,0,0,.18)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:6px}
    .field.full{grid-column:1/-1}
    label{font-weight:800;font-size:13px;color:var(--ink-soft)}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;padding:12px 13px;border-radius:4px;color:var(--ink);transition:.2s ease}
    input:hover,select:hover,textarea:hover{border-color:#bfc3b7}
    input:focus,select:focus,textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(85,199,192,.14);outline:0}
    textarea{min-height:108px;resize:vertical}
    .form-actions{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:16px;flex-wrap:wrap}
    .form-tip{margin:0;color:var(--muted);font-size:13px}
    .site-footer{background:#111518;color:#cbd2d0;padding:58px 0 24px}
    .footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.45fr;gap:34px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12)}
    .footer-brand{font-size:20px;font-weight:900;color:var(--green);margin-bottom:12px}
    .footer-col p{margin:0 0 8px;color:#aeb8b4}
    .footer-col h3{margin:0 0 14px;color:#fff;font-size:16px}
    .footer-col a{display:block;color:#aeb8b4;margin:8px 0;transition:.2s ease}
    .footer-col a:hover{color:var(--green);transform:translateX(2px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:20px;font-size:13px;color:#8f9996}
    .footer-bottom p{margin:0}
    @media (max-width:1024px){
      .main-nav{gap:2px}
      .main-nav a{padding:9px 10px}
      .hero-inner,.resource-wrap,.quality-grid,.faq-wrap,.contact-grid{grid-template-columns:1fr}
      .resource-aside{position:static}
      .process-track{grid-template-columns:repeat(2,1fr)}
      .process-step{border-bottom:1px solid var(--line)}
      .integration-map{grid-template-columns:1fr}
      .map-bus{min-height:170px}
      .interface-note{grid-template-columns:repeat(2,1fr)}
      .footer-top{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .topbar{display:none}
      .nav-row{min-height:66px}
      .brand{font-size:18px}
      .menu-toggle{display:block}
      .main-nav{position:absolute;left:16px;right:16px;top:66px;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);padding:12px;display:none;flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{min-height:44px;display:flex;align-items:center;justify-content:center}
      .category-hero{padding:54px 0 42px}
      .level-grid{grid-template-columns:1fr}
      section{padding:64px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .tabbar{align-items:flex-start}
      .resource-row{grid-template-columns:1fr;gap:10px}
      .status{border-left:0;border-top:2px solid var(--green);padding-left:0;padding-top:10px}
      .process-track{grid-template-columns:1fr}
      .process-step{border-right:0}
      .metric-row{grid-template-columns:1fr}
      .metric-row > div{border-right:0;border-bottom:1px solid var(--line)}
      .metric-row > div:last-child{border-bottom:0}
      .form-grid,.footer-top{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .footer-bottom p + p{margin-top:8px}
    }
    @media (max-width:520px){
      .category-hero h1{font-size:34px}
      .hero-summary{font-size:16px}
      .hero-actions{display:grid}
      .btn-primary,.btn-secondary,.btn-ghost{width:100%}
      .tab-left{display:grid;width:100%}
      .filter-btn{width:100%;min-height:44px}
      .interface-note{grid-template-columns:1fr}
      .quality-card{padding:20px}
      .contact-form{padding:20px}
    }

/* roulang page: category1 */
:root{
--ink:#171b1f;--ink-soft:#30383d;--muted:#687277;--paper:#f4f1e8;--paper-deep:#e9e6dc;
--white:#fffefa;--line:#d8d8cd;--green:#b8e36b;--green-deep:#86b745;--cyan:#55c7c0;
--orange:#f47c48;--radius:8px;--shadow:0 14px 36px rgba(23,27,31,.08);--container:1220px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.topbar{height:40px;background:var(--ink);color:#cbd2d0;font-size:12px}
.topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
.topbar p{margin:0}.topbar strong{color:var(--green);font-weight:700}
.site-header{position:sticky;top:0;z-index:20;background:rgba(244,241,232,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav-row{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:0}
.brand-mark{width:31px;height:31px;position:relative;border:2px solid var(--ink);display:grid;place-items:center}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--cyan)}
.brand-mark:before{width:9px;height:9px;top:5px;left:5px}.brand-mark:after{width:9px;height:9px;right:5px;bottom:5px;background:var(--green)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:10px 14px;border:1px solid transparent;color:var(--ink-soft);font-size:14px;transition:.2s ease}
.main-nav a:hover{color:var(--ink);background:var(--white);border-color:var(--line)}
.main-nav a.active{background:var(--ink);color:var(--green);border-color:var(--ink)}
.nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:var(--ink);border:1px solid var(--green);padding:11px 18px;border-radius:4px;font-weight:700;transition:.2s ease}
.nav-cta:hover,.btn-primary:hover{background:#d0f38b;border-color:#d0f38b;transform:translateY(-2px)}
.nav-cta:active,.btn-primary:active{transform:translateY(0)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:4px;color:var(--ink)}
.menu-toggle span{display:block;width:19px;height:2px;background:currentColor;margin:4px auto}
.page-hero{padding:86px 0 76px;background:var(--ink);color:var(--white);position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;right:0;top:0;width:42%;height:100%;background:url('/assets/images/3aff947dff908c6a.webp') center/cover;opacity:.35}
.hero-inner{position:relative;z-index:1;max-width:780px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:1px}
.eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:currentColor}
.page-hero h1{font-size:clamp(38px,5vw,68px);line-height:1.15;margin:20px 0 22px;font-weight:800}
.page-hero p{max-width:710px;color:#dce5e0;font-size:18px;margin:0}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.badge,.filter button,.term-tag{display:inline-flex;align-items:center;border:1px solid var(--line);padding:7px 12px;border-radius:4px;font-size:13px;background:var(--white);color:var(--ink-soft)}
.page-hero .badge{background:rgba(255,254,250,.08);border-color:rgba(255,255,255,.25);color:var(--green)}
section{padding:84px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:34px}
.section-head h2{font-size:clamp(28px,3.2vw,45px);line-height:1.2;margin:12px 0 0;max-width:720px}
.section-head p{max-width:470px;margin:0;color:var(--muted)}
.filter-section{padding:22px 0;background:var(--white)}
.filter{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.filter label{font-size:13px;font-weight:700;margin-right:8px;color:var(--ink-soft)}
.filter button{cursor:pointer;transition:.2s ease}
.filter button:hover,.filter button.active{background:var(--ink);color:var(--green);border-color:var(--ink)}
.topic-layout{display:grid;grid-template-columns:3fr 1fr;gap:54px}
.topic-list{display:grid;gap:14px}
.topic-item{display:grid;grid-template-columns:72px 1fr 150px;gap:20px;align-items:center;padding:22px 0;border-top:1px solid var(--line);transition:.2s ease}
.topic-item:hover{padding-left:10px;background:rgba(255,254,250,.4)}
.topic-no{font-size:30px;font-weight:800;color:var(--green-deep)}
.topic-item h3{font-size:20px;margin:0 0 7px}.topic-item p{margin:0;color:var(--muted);font-size:14px}
.topic-status{text-align:right;color:var(--ink-soft);font-size:12px}.topic-status b{display:block;color:var(--cyan);font-size:22px}
.topic-side{background:var(--ink);color:var(--white);padding:25px;border-left:5px solid var(--green);align-self:start}
.topic-side h3{margin:0 0 16px;font-size:20px}.topic-side p{color:#c4ceca;font-size:14px;margin:0 0 20px}
.side-list{padding:0;margin:0;list-style:none}.side-list li{padding:10px 0;border-top:1px solid rgba(255,255,255,.18);font-size:14px}
.coop-section{background:var(--white)}
.architecture{display:grid;grid-template-columns:1fr 1.25fr;gap:46px;align-items:center}
.arch-copy h2{font-size:36px;line-height:1.25;margin:12px 0 18px}.arch-copy p{color:var(--muted)}
.arch-image img{width:100%;height:360px;object-fit:cover}
.layer-map{display:grid;gap:8px;margin-top:25px}
.layer{display:grid;grid-template-columns:110px 1fr;align-items:center;border:1px solid var(--line);min-height:56px}
.layer strong{height:100%;display:flex;align-items:center;padding:0 14px;background:var(--paper-deep);font-size:13px}
.layer span{padding:0 16px;font-size:14px}.layer:nth-child(2) strong{background:#d5f0c0}.layer:nth-child(3) strong{background:#c9ece9}.layer:nth-child(4) strong{background:#f8d2be}
.terms-section{background:var(--paper-deep)}
.term-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.term{background:var(--white);padding:22px;border:1px solid var(--line);min-height:146px;transition:.2s}
.term:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--cyan)}
.term h3{font-size:18px;margin:0 0 8px}.term p{margin:0;color:var(--muted);font-size:14px}
.metrics-section{background:var(--ink);color:var(--white)}
.metrics-section .section-head p{color:#bac5c1}
.metric-table{border-top:1px solid rgba(255,255,255,.25)}
.metric-row{display:grid;grid-template-columns:1.2fr 1fr 1.5fr;gap:20px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.2);align-items:center}
.metric-row strong{color:var(--green);font-size:24px}.metric-row span{color:#dce5e0;font-size:14px}.metric-row small{color:#aab8b3}
.faq-section{background:var(--paper)}
.faq-list{max-width:900px}.faq-item{border-top:1px solid var(--line)}
.faq-question{width:100%;border:0;background:none;text-align:left;padding:20px 42px 20px 0;position:relative;color:var(--ink);font-weight:700}
.faq-question:after{content:"+";position:absolute;right:8px;font-size:24px;color:var(--green-deep)}
.faq-question[aria-expanded=true]:after{content:"−"}.faq-answer{display:none;color:var(--muted);padding:0 45px 20px 0;font-size:14px}.faq-answer.open{display:block}
.cta-section{background:var(--cyan);padding:68px 0}
.cta-box{display:flex;justify-content:space-between;align-items:center;gap:28px}
.cta-box h2{font-size:34px;line-height:1.25;margin:10px 0}.cta-box p{margin:0;color:#164746}
.btn-dark{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:var(--green);padding:13px 20px;border:1px solid var(--ink);border-radius:4px;font-weight:700;white-space:nowrap;transition:.2s}
.btn-dark:hover{background:#30383d;transform:translateY(-2px)}
.site-footer{background:var(--ink);color:#d7dfdb;padding:62px 0 22px}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:42px}
.footer-brand{font-size:21px;font-weight:800;color:var(--green);margin-bottom:12px}.footer-col p{color:#aebbb6;font-size:13px;margin:5px 0}
.footer-col h3{font-size:14px;color:var(--white);margin:0 0 15px}.footer-col a{display:block;color:#aebbb6;font-size:13px;margin:7px 0;transition:.2s}
.footer-col a:hover{color:var(--green)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.18);margin-top:42px;padding-top:18px;color:#899791;font-size:12px}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
button:disabled{cursor:not-allowed;opacity:.5}
@media(max-width:1024px){.main-nav a{padding:9px 9px}.topic-layout{gap:28px}.term-grid{grid-template-columns:repeat(2,1fr)}.footer-top{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){
.container{width:min(calc(100% - 32px),var(--container))}.topbar{height:auto;padding:8px 0}.topbar-inner{gap:8px;align-items:flex-start}.topbar p:last-child{display:none}
.nav-row{min-height:66px}.brand{font-size:17px}.brand-mark{width:28px;height:28px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;left:16px;right:16px;top:66px;background:var(--paper);border:1px solid var(--line);padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{min-height:44px}.nav-cta{text-align:center}
.page-hero{padding:64px 0 58px}.page-hero:after{width:100%;opacity:.2}.page-hero h1{font-size:42px}.page-hero p{font-size:16px}
section{padding:62px 0}.section-head,.cta-box{display:block}.section-head p{margin-top:16px}.topic-layout,.architecture{grid-template-columns:1fr}.topic-side{order:-1}.topic-item{grid-template-columns:50px 1fr}.topic-status{display:none}.arch-image img{height:280px}.metric-row{grid-template-columns:1fr 1fr}.metric-row small{grid-column:1/-1}.cta-box .btn-dark{margin-top:24px}
}
@media(max-width:520px){.term-grid,.footer-top{grid-template-columns:1fr}.topic-item h3{font-size:17px}.section-head h2{font-size:30px}.footer-bottom{display:block}.footer-bottom p{margin:8px 0}}

/* roulang page: category4 */
:root{
 --ink:#171b1f;
 --ink-soft:#30383d;
 --muted:#687277;
 --paper:#f4f1e8;
 --paper-deep:#e9e6dc;
 --white:#fffefa;
 --line:#d8d8cd;
 --green:#b8e36b;
 --green-deep:#86b745;
 --cyan:#55c7c0;
 --orange:#f47c48;
 --radius:8px;
 --shadow:0 14px 36px rgba(23,27,31,.08);
 --container:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.topbar{height:40px;background:var(--ink);color:#cbd2d0;font-size:12px}
.topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar p{margin:0}
.topbar strong{color:var(--green);font-weight:700}
.site-header{position:sticky;top:0;z-index:30;background:rgba(244,241,232,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav-row{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:0;white-space:nowrap}
.brand-mark{width:31px;height:31px;position:relative;border:2px solid var(--ink);display:grid;place-items:center;flex:0 0 auto}
.brand-mark::before,.brand-mark::after{content:"";position:absolute;background:var(--cyan)}
.brand-mark::before{width:9px;height:9px;top:5px;left:5px}
.brand-mark::after{width:9px;height:9px;right:5px;bottom:5px;background:var(--green)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:10px 14px;border:1px solid transparent;color:var(--ink-soft);font-size:14px;transition:.2s ease}
.main-nav a:hover{color:var(--ink);background:var(--white);border-color:var(--line)}
.main-nav a.active{background:var(--ink);color:var(--green);border-color:var(--ink)}
.nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:var(--ink);border:1px solid var(--green);padding:11px 18px;border-radius:4px;font-weight:700;transition:.2s ease}
.nav-cta:hover,.btn-primary:hover{background:#d0f38b;border-color:#d0f38b;transform:translateY(-2px)}
.nav-cta:active,.btn-primary:active{transform:translateY(0)}
.btn-dark{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--ink);color:var(--white);border:1px solid var(--ink);padding:12px 18px;border-radius:4px;font-weight:700;transition:.2s ease}
.btn-dark:hover{background:#2b3236;border-color:#2b3236;transform:translateY(-2px)}
.btn-line{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;color:var(--ink);border:1px solid var(--ink);padding:11px 18px;border-radius:4px;font-weight:700;transition:.2s ease}
.btn-line:hover{background:var(--ink);color:var(--green);transform:translateY(-2px)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(85,199,192,.45);outline-offset:3px}
button:disabled,.btn-primary[aria-disabled="true"]{opacity:.55;cursor:not-allowed;transform:none}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:4px;color:var(--ink)}
.menu-toggle span{display:block;width:19px;height:2px;background:currentColor;margin:4px auto}
section{padding:82px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:34px}
.section-head h2{font-size:clamp(26px,3vw,42px);line-height:1.2;margin:10px 0 0;max-width:760px}
.section-head p{max-width:500px;margin:0;color:var(--muted)}
.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--green-deep);font-size:12px;font-weight:800}
.section-kicker::before{content:"";width:24px;height:2px;background:currentColor}
.page-hero{position:relative;min-height:510px;background:#20272b;color:var(--white);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/191c2308eff80f3a.webp') center/cover no-repeat;opacity:.46}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,27,31,.78),rgba(23,27,31,.92))}
.hero-inner{position:relative;z-index:1;padding:78px 0 62px;display:grid;grid-template-columns:1fr;gap:30px;text-align:center}
.hero-label{display:inline-flex;margin:0 auto;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800}
.hero-label::before,.hero-label::after{content:"";width:28px;height:2px;background:currentColor}
h1{font-size:clamp(36px,5vw,64px);line-height:1.14;margin:0 auto;max-width:880px;letter-spacing:0}
.hero-copy{max-width:760px;margin:0 auto;color:#e3e9e5;font-size:18px}
.search-panel{width:min(860px,100%);margin:8px auto 0;background:rgba(255,254,250,.96);border:1px solid rgba(255,255,255,.38);box-shadow:0 22px 48px rgba(0,0,0,.22);padding:14px;display:grid;grid-template-columns:1fr auto;gap:12px;border-radius:8px}
.search-panel input{width:100%;border:1px solid var(--line);background:var(--white);color:var(--ink);padding:14px 16px;border-radius:4px}
.quick-tags{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.quick-tags a,.tag,.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.34);padding:7px 10px;border-radius:4px;font-size:13px;color:#ecf2ee;background:rgba(23,27,31,.26);transition:.2s ease}
.quick-tags a:hover{border-color:var(--green);color:var(--green)}
.filter-strip{background:var(--white);padding:22px 0;border-bottom:1px solid var(--line)}
.filter-grid{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.filter-tabs{display:flex;gap:8px;flex-wrap:wrap}
.filter-tabs button{border:1px solid var(--line);background:var(--paper);color:var(--ink-soft);padding:9px 12px;border-radius:4px;transition:.2s ease}
.filter-tabs button:hover,.filter-tabs button.active{background:var(--ink);border-color:var(--ink);color:var(--green)}
.filter-select{border:1px solid var(--line);background:var(--paper);padding:9px 12px;border-radius:4px;color:var(--ink-soft)}
.news-section{background:var(--paper)}
.news-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:28px;align-items:start}
.featured-card{background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);display:grid;grid-template-columns:.95fr 1.05fr;min-height:360px}
.featured-card img{height:100%;width:100%;object-fit:cover}
.featured-body{padding:30px}
.featured-body h2{font-size:30px;line-height:1.25;margin:14px 0 12px}
.featured-body p{color:var(--muted);margin:0 0 22px}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.meta-row span,.content-type{display:inline-flex;border:1px solid var(--line);background:var(--paper);color:var(--ink-soft);font-size:12px;padding:4px 8px;border-radius:4px}
.news-list{display:grid;gap:14px}
.news-item{background:var(--white);border:1px solid var(--line);padding:20px;transition:.2s ease}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c5c8bb}
.news-item h3{margin:8px 0 8px;font-size:20px;line-height:1.35}
.news-item p{margin:0;color:var(--muted);font-size:14px}
.aside-board{background:var(--ink);color:var(--white);border-left:4px solid var(--green);padding:24px;position:sticky;top:128px}
.aside-board h3{margin:0 0 16px;font-size:22px}
.aside-board ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.aside-board li{padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.14);color:#dbe2df}
.aside-board b{color:var(--green)}
.arch-section{background:var(--white)}
.arch-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:center}
.arch-visual{position:relative;background:var(--paper);border:1px solid var(--line);padding:18px}
.arch-visual img{width:100%;height:360px;object-fit:cover}
.node-card{position:absolute;right:0;bottom:34px;transform:translateX(18px);background:var(--ink);color:var(--white);padding:18px;border-left:4px solid var(--cyan);box-shadow:var(--shadow);width:min(260px,86%)}
.node-card b{display:block;color:var(--green);font-size:24px}
.arch-points{display:grid;gap:14px}
.arch-point{border:1px solid var(--line);background:var(--paper);padding:18px;display:grid;grid-template-columns:42px 1fr;gap:14px}
.arch-point i{font-style:normal;width:38px;height:38px;display:grid;place-items:center;background:var(--green);color:var(--ink);font-weight:800}
.arch-point h3{margin:0 0 4px;font-size:18px}
.arch-point p{margin:0;color:var(--muted);font-size:14px}
.data-section{background:var(--paper-deep)}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.data-tile{background:var(--white);border:1px solid #d1d2c7;padding:24px;min-height:174px;position:relative;overflow:hidden}
.data-tile::after{content:"";position:absolute;right:18px;top:18px;width:10px;height:10px;background:var(--cyan)}
.data-tile:nth-child(2)::after{background:var(--green)}
.data-tile:nth-child(3)::after{background:var(--orange)}
.data-tile b{display:block;font-size:36px;line-height:1.05;margin-bottom:10px}
.data-tile strong{display:block;margin-bottom:8px}
.data-tile p{margin:0;color:var(--muted);font-size:13px}
.index-section{background:var(--white)}
.keyword-cloud{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.keyword-cloud a{border:1px solid var(--line);background:var(--paper);padding:13px 12px;border-radius:4px;color:var(--ink-soft);transition:.2s ease}
.keyword-cloud a:hover{background:var(--ink);color:var(--green);border-color:var(--ink);transform:translateY(-2px)}
.faq-section{background:var(--paper)}
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq-list details{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.faq-list summary{list-style:none;padding:18px 22px;font-weight:800;cursor:pointer;display:flex;justify-content:space-between;gap:18px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";color:var(--green-deep);font-size:24px;line-height:1}
.faq-list details[open] summary::after{content:"−"}
.faq-list p{margin:0;padding:0 22px 20px;color:var(--muted)}
.cta-section{background:var(--ink);color:var(--white);border-bottom:none}
.cta-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:38px;align-items:start}
.cta-grid h2{font-size:clamp(28px,3.4vw,46px);line-height:1.2;margin:10px 0 16px}
.cta-grid p{color:#cbd4d0;margin:0}
.contact-form{background:var(--white);color:var(--ink);border:1px solid rgba(255,255,255,.18);padding:24px;border-radius:8px;display:grid;gap:14px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:grid;gap:7px;font-weight:700;font-size:13px;color:var(--ink-soft)}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;border:1px solid var(--line);background:var(--paper);padding:12px;border-radius:4px;color:var(--ink)}
.contact-form textarea{min-height:104px;resize:vertical}
.site-footer{background:#101315;color:#d4dbd8;padding:58px 0 24px}
.footer-top{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:34px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{font-size:22px;font-weight:800;color:var(--green);margin-bottom:12px}
.footer-col h3{font-size:15px;color:#fff;margin:0 0 12px}
.footer-col p{margin:0 0 8px;color:#b9c2bf;font-size:14px}
.footer-col a{display:block;color:#b9c2bf;font-size:14px;margin:8px 0;transition:.2s ease}
.footer-col a:hover{color:var(--green)}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:20px;color:#9da7a4;font-size:13px}
.footer-bottom p{margin:0}
@media (max-width:1024px){
 .main-nav a{padding:9px 10px}
 .news-layout,.arch-grid,.cta-grid{grid-template-columns:1fr}
 .aside-board{position:static}
 .featured-card{grid-template-columns:1fr}
 .featured-card img{height:280px}
 .data-grid{grid-template-columns:repeat(2,1fr)}
 .keyword-cloud{grid-template-columns:repeat(3,1fr)}
 .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
 .topbar{display:none}
 .container{width:min(calc(100% - 32px),var(--container))}
 .nav-row{min-height:64px}
 .brand{font-size:18px}
 .menu-toggle{display:block}
 .main-nav{position:absolute;left:16px;right:16px;top:72px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);display:none;flex-direction:column;align-items:stretch;padding:10px;z-index:40}
 .main-nav.open{display:flex}
 .main-nav a{min-height:44px;display:flex;align-items:center;justify-content:space-between}
 .hero-inner{padding:58px 0 44px}
 .search-panel{grid-template-columns:1fr}
 section{padding:64px 0}
 .section-head{display:block}
 .section-head p{margin-top:12px}
 .arch-visual img{height:280px}
 .node-card{position:static;transform:none;margin-top:12px;width:100%}
 .data-grid{grid-template-columns:1fr}
 .keyword-cloud{grid-template-columns:1fr 1fr}
 .form-row{grid-template-columns:1fr}
 .footer-top{grid-template-columns:1fr}
 .footer-bottom{display:grid}
}
@media (max-width:520px){
 h1{font-size:34px}
 .hero-copy{font-size:16px}
 .quick-tags{justify-content:flex-start}
 .featured-body{padding:22px}
 .featured-body h2{font-size:24px}
 .keyword-cloud{grid-template-columns:1fr}
 .data-tile b{font-size:31px}
 .brand span{max-width:220px;white-space:normal;line-height:1.2}
}

/* roulang page: category3 */
:root{
 --ink:#171b1f;
 --ink-soft:#30383d;
 --muted:#687277;
 --paper:#f4f1e8;
 --paper-deep:#e9e6dc;
 --white:#fffefa;
 --line:#d8d8cd;
 --green:#b8e36b;
 --green-deep:#86b745;
 --cyan:#55c7c0;
 --orange:#f47c48;
 --radius:8px;
 --shadow:0 14px 36px rgba(23,27,31,.08);
 --container:1220px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.topbar{height:40px;background:var(--ink);color:#cbd2d0;font-size:12px}
.topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
.topbar p{margin:0}
.topbar strong{color:var(--green);font-weight:700}
.site-header{position:sticky;top:0;z-index:20;background:rgba(244,241,232,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav-row{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:0}
.brand-mark{width:31px;height:31px;position:relative;border:2px solid var(--ink);display:grid;place-items:center}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--cyan)}
.brand-mark:before{width:9px;height:9px;top:5px;left:5px}
.brand-mark:after{width:9px;height:9px;right:5px;bottom:5px;background:var(--green)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:10px 14px;border:1px solid transparent;color:var(--ink-soft);font-size:14px;transition:.2s ease}
.main-nav a:hover{color:var(--ink);background:var(--white);border-color:var(--line)}
.main-nav a.active{background:var(--ink);color:var(--green);border-color:var(--ink)}
.nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:var(--ink);border:1px solid var(--green);padding:11px 18px;border-radius:4px;font-weight:700;transition:.2s ease}
.nav-cta:hover,.btn-primary:hover{background:#d0f38b;border-color:#d0f38b;transform:translateY(-2px)}
.nav-cta:active,.btn-primary:active{transform:translateY(0)}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;color:var(--ink);border:1px solid var(--ink);border-radius:4px;transition:.2s ease}
.btn-secondary:hover{background:var(--ink);color:var(--green)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:4px;color:var(--ink)}
.menu-toggle span{display:block;width:19px;height:2px;background:currentColor;margin:4px auto}
.page-hero{background:var(--ink);color:var(--white);padding:88px 0 82px;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;right:0;top:0;width:42%;height:100%;background:url('/assets/images/3aff947dff908c6a.webp') center/cover no-repeat;opacity:.6}
.page-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--ink) 0%,rgba(23,27,31,.92) 48%,rgba(23,27,31,.25) 100%);z-index:1}
.hero-inner{position:relative;z-index:2;max-width:760px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:1px}
.eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:currentColor}
.page-hero h1{font-size:clamp(38px,5vw,68px);line-height:1.16;margin:20px 0 22px}
.page-hero p{color:#dce4df;max-width:690px;font-size:18px;margin:0 0 28px}
.hero-note{display:flex;gap:24px;flex-wrap:wrap;margin-top:42px}
.hero-note div{border-left:2px solid var(--green);padding-left:12px}
.hero-note b{display:block;color:var(--green);font-size:24px;line-height:1.25}
.hero-note span{font-size:12px;color:#b9c4bf}
section{padding:82px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:34px}
.section-head h2{font-size:clamp(27px,3.3vw,44px);line-height:1.25;margin:12px 0 0}
.section-head p{max-width:490px;margin:0;color:var(--muted)}
.filter-section{background:var(--white);padding:26px 0}
.filter-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.filter-label{font-size:13px;font-weight:700;margin-right:10px}
.filter-bar button{background:transparent;border:1px solid var(--line);color:var(--ink-soft);padding:8px 15px;border-radius:4px;transition:.2s}
.filter-bar button:hover,.filter-bar button.selected{background:var(--ink);border-color:var(--ink);color:var(--green)}
.scene-list{background:var(--paper)}
.scene-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:34px}
.scene-list-main{display:grid;gap:14px}
.scene-item{display:grid;grid-template-columns:74px 1fr 150px;gap:20px;align-items:center;background:var(--white);border:1px solid var(--line);padding:22px 24px;transition:.2s}
.scene-item:hover{border-color:var(--cyan);box-shadow:var(--shadow);transform:translateX(4px)}
.scene-number{font-size:28px;color:var(--green-deep);font-weight:800}
.scene-item h3{margin:0 0 6px;font-size:19px}
.scene-item p{margin:0;color:var(--muted);font-size:14px}
.scene-tag{justify-self:end;color:var(--ink-soft);font-size:12px;border-left:2px solid var(--orange);padding-left:10px}
.scene-aside{background:var(--ink);color:var(--white);padding:30px;align-self:start}
.scene-aside img{width:100%;height:190px;object-fit:cover;margin-bottom:24px}
.scene-aside h3{margin:0 0 12px;color:var(--green);font-size:22px}
.scene-aside p{color:#c5cfca;font-size:14px;margin:0}
.mapping-section{background:var(--white)}
.mapping-board{display:grid;grid-template-columns:1fr 56px 1fr 56px 1fr;align-items:stretch;gap:0}
.mapping-col{border:1px solid var(--line);background:var(--paper);padding:27px 24px}
.mapping-col h3{margin:0 0 17px;font-size:20px}
.mapping-col ul{padding:0;margin:0;list-style:none;display:grid;gap:10px}
.mapping-col li{border-top:1px solid var(--line);padding-top:10px;font-size:14px}
.mapping-col li strong{display:block}
.mapping-col li span{color:var(--muted);font-size:12px}
.mapping-arrow{display:grid;place-items:center;color:var(--orange);font-size:25px;font-weight:800}
.role-section{background:var(--paper-deep)}
.role-layout{display:grid;grid-template-columns:4fr 8fr;gap:58px;align-items:start}
.role-intro p{color:var(--muted)}
.role-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.role-card{background:var(--white);border:1px solid var(--line);padding:23px}
.role-card:nth-child(2){border-top:3px solid var(--cyan)}
.role-card:nth-child(3){border-top:3px solid var(--green)}
.role-card:nth-child(4){border-top:3px solid var(--orange)}
.role-card h3{margin:0 0 8px;font-size:18px}
.role-card p{margin:0;color:var(--muted);font-size:14px}
.metric-section{background:var(--ink);color:var(--white)}
.metric-section .section-head p{color:#bdc8c3}
.metric-layout{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:#465056}
.metric-box{background:var(--ink);padding:27px 24px;min-height:190px}
.metric-box b{font-size:42px;color:var(--green);line-height:1.1}
.metric-box h3{margin:18px 0 5px;font-size:17px}
.metric-box p{margin:0;color:#b8c3be;font-size:13px}
.faq-section{background:var(--paper)}
.faq-list{max-width:920px;margin:0 auto;display:grid;gap:10px}
.faq-item{border:1px solid var(--line);background:var(--white)}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;border:0;background:transparent;padding:19px 22px;color:var(--ink);font-weight:700}
.faq-question span{font-size:22px;color:var(--green-deep);transition:.2s}
.faq-answer{display:none;padding:0 22px 19px;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span{transform:rotate(45deg)}
.cta-section{background:var(--green);padding:70px 0}
.cta-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.cta-section h2{font-size:clamp(30px,4vw,52px);line-height:1.2;margin:14px 0}
.cta-section p{max-width:510px;margin:0;color:#3f542d}
.contact-form{display:grid;gap:12px}
.contact-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;border:1px solid rgba(23,27,31,.4);background:rgba(255,254,250,.72);padding:12px 14px;border-radius:4px;color:var(--ink)}
.contact-form textarea{min-height:104px;resize:vertical}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#66705d}
.contact-form .btn-primary{background:var(--ink);border-color:var(--ink);color:var(--green)}
.contact-form .btn-primary:hover{background:#30383d;border-color:#30383d}
.site-footer{background:var(--ink);color:#d6dfda;padding:56px 0 22px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.25fr;gap:38px;padding-bottom:42px}
.footer-brand{font-weight:800;font-size:20px;color:var(--white);margin-bottom:12px}
.footer-col p{margin:0 0 7px;color:#aebbb5;font-size:13px}
.footer-col h3{font-size:14px;color:var(--green);margin:0 0 15px}
.footer-col a{display:block;color:#c4cfca;font-size:13px;margin:7px 0;transition:.2s}
.footer-col a:hover{color:var(--green)}
.footer-bottom{border-top:1px solid #3b4549;padding-top:18px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#899792;font-size:12px}
@media(max-width:1024px){
 .main-nav a{padding-left:9px;padding-right:9px}
 .scene-grid,.role-layout{grid-template-columns:1fr}
 .scene-aside{display:grid;grid-template-columns:180px 1fr;gap:24px;align-items:center}
 .scene-aside img{margin:0;height:150px}
 .mapping-board{grid-template-columns:1fr}
 .mapping-arrow{height:40px;transform:rotate(90deg)}
}
@media(max-width:768px){
 .container{width:min(calc(100% - 32px),var(--container))}
 .topbar{height:auto;padding:8px 0}
 .topbar-inner{min-height:26px}
 .topbar-inner p:last-child{display:none}
 .nav-row{min-height:66px}
 .brand{font-size:17px}
 .main-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:var(--white);border:1px solid var(--line);padding:8px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .main-nav.open{display:flex}
 .main-nav a{padding:13px 14px}
 .menu-toggle{display:block}
 .page-hero{padding:70px 0 62px}
 .page-hero:after{width:100%;opacity:.2}
 .page-hero:before{background:rgba(23,27,31,.85)}
 section{padding:62px 0}
 .section-head{display:block;margin-bottom:27px}
 .section-head p{margin-top:16px}
 .scene-item{grid-template-columns:45px 1fr;gap:12px;padding:18px}
 .scene-tag{grid-column:2;justify-self:start}
 .scene-aside{display:block}
 .scene-aside img{height:180px;margin-bottom:20px}
 .role-list,.metric-layout,.cta-layout{grid-template-columns:1fr}
 .metric-layout{gap:1px}
 .metric-box{min-height:auto}
 .cta-layout{gap:30px}
 .contact-form .form-row{grid-template-columns:1fr}
 .footer-top{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:520px){
 .hero-note{gap:15px;margin-top:30px}
 .mapping-col{padding:22px 18px}
 .footer-top{grid-template-columns:1fr}
 .footer-bottom{display:block}
 .footer-bottom p{margin:6px 0}
}