/* roulang page: index */
:root{
            --pine:#183a36;
            --pine-deep:#102b28;
            --terra:#c76542;
            --terra-dark:#a94e31;
            --paper:#f7f5ef;
            --mist:#e8eeea;
            --ink:#202725;
            --muted:#65716d;
            --line:#d4dfda;
            --white:#fff;
            --radius:7px;
            --shadow:0 14px 38px rgba(24,58,54,.11);
            --ease:all .28s ease;
        }
        *,*:before,*:after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid rgba(199,101,66,.48);outline-offset:4px}
        .container{width:min(1180px,calc(100% - 48px));margin:0 auto}
        .topline{height:38px;background:var(--pine-deep);color:#dce9e4;font-size:13px}
        .topline .container{height:100%;display:flex;align-items:center;justify-content:space-between}
        .topline a{color:#fff;border-bottom:1px solid rgba(255,255,255,.35)}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(247,245,239,.96);border-bottom:1px solid transparent;transition:var(--ease)}
        .site-header.scrolled{border-color:var(--line);box-shadow:0 5px 20px rgba(16,43,40,.06)}
        .nav-wrap{height:78px;display:flex;align-items:center;gap:42px}
        .brand{display:inline-flex;align-items:center;gap:12px;min-width:238px}
        .brand-mark{width:35px;height:35px;border:2px solid var(--terra);color:var(--terra);display:grid;place-items:center;font-family:Georgia,serif;font-size:18px;line-height:1;transform:rotate(-5deg)}
        .brand-name{font-weight:800;letter-spacing:0;font-size:17px;color:var(--pine)}
        .brand-name small{display:block;font-size:10px;color:var(--muted);font-weight:600;line-height:1.2;margin-top:1px}
        .main-nav{display:flex;align-items:center;gap:28px;flex:1}
        .main-nav a{position:relative;font-size:15px;color:var(--muted);padding:8px 0;transition:var(--ease)}
        .main-nav a:after{content:"";position:absolute;bottom:1px;left:0;width:0;height:2px;background:var(--terra);transition:var(--ease)}
        .main-nav a:hover,.main-nav a.active{color:var(--pine)}
        .main-nav a:hover:after,.main-nav a.active:after{width:100%}
        .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 20px;border-radius:4px;border:1px solid transparent;font-weight:700;transition:var(--ease)}
        .nav-cta{background:var(--terra);color:#fff;font-size:14px}
        .nav-cta:hover,.button.primary:hover{background:var(--terra-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(167,76,47,.22)}
        .menu-toggle{display:none;background:none;border:0;color:var(--pine);font-size:25px;min-width:44px;min-height:44px}
        .hero{min-height:650px;color:#fff;position:relative;background-image:linear-gradient(90deg,rgba(16,43,40,.9) 0%,rgba(16,43,40,.68) 47%,rgba(16,43,40,.2) 100%),url("/assets/images/backpic/back-1.png");background-size:cover;background-position:center}
        .hero .container{min-height:650px;display:flex;align-items:center;padding:66px 0 92px}
        .hero-content{max-width:720px}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;text-transform:none;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--terra)}
        .hero .eyebrow{color:#f1b19a}
        .eyebrow:before,.section-kicker:before{content:"";display:inline-block;width:24px;height:2px;background:currentColor}
        h1,h2,h3,p{margin-top:0}
        h1,h2,h3{line-height:1.25;letter-spacing:0}
        h1{font-size:clamp(42px,5vw,64px);max-width:760px;margin:22px 0 22px;font-weight:850}
        .hero-lead{font-size:19px;line-height:1.9;color:#e7efeb;max-width:660px;margin-bottom:34px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .button.primary{background:var(--terra);color:#fff}
        .button.ghost{border-color:rgba(255,255,255,.62);color:#fff}
        .button.ghost:hover{background:#fff;color:var(--pine);border-color:#fff}
        .hero-note{position:absolute;bottom:0;left:0;right:0;background:rgba(16,43,40,.78);border-top:1px solid rgba(255,255,255,.18)}
        .hero-note .container{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0}
        .hero-note p{margin:0;color:#dce9e4;font-size:14px}
        .hero-note a{color:#fff;font-weight:700}
        .section{padding:94px 0}
        .section.mist{background:var(--mist)}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:40px}
        .section-head h2{font-size:38px;color:var(--pine);margin:13px 0 0}
        .section-head p{max-width:470px;color:var(--muted);margin:0}
        .keyword-map{display:grid;grid-template-columns:1.15fr .92fr .92fr;gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .keyword-item{padding:30px 30px 30px 0;border-right:1px solid var(--line);margin-right:30px}
        .keyword-item:last-child{border-right:0;margin-right:0}
        .keyword-no{font-family:Georgia,serif;color:var(--terra);font-size:22px}
        .keyword-item h3{font-size:23px;color:var(--pine);margin:14px 0 8px}
        .keyword-item p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:17px}
        .text-link{font-size:14px;font-weight:800;color:var(--terra);display:inline-flex;align-items:center;gap:7px}
        .text-link span{transition:var(--ease)}
        .text-link:hover span{transform:translateX(5px)}
        .feature-layout{display:grid;grid-template-columns:1fr 1.4fr;gap:70px;align-items:start}
        .feature-layout h2{font-size:39px;color:var(--pine);margin:14px 0 18px}
        .feature-layout .intro{color:var(--muted);font-size:16px}
        .topic-list{border-top:1px solid var(--line)}
        .topic-row{display:grid;grid-template-columns:96px 1fr 28px;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:var(--ease)}
        .topic-row:hover{padding-left:10px;background:rgba(255,255,255,.45)}
        .topic-row time,.topic-row small{font-size:12px;color:var(--muted)}
        .topic-row h3{font-size:18px;color:var(--pine);margin:0 0 3px}
        .topic-row p{font-size:14px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .topic-arrow{color:var(--terra);font-size:22px}
        .media-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
        .media-main,.media-side{position:relative;overflow:hidden;border-radius:var(--radius);min-height:390px;background:var(--pine)}
        .media-main img,.media-side img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
        .media-main:hover img,.media-side:hover img{transform:scale(1.04)}
        .media-main:after,.media-side:after{content:"";position:absolute;inset:38% 0 0;background:linear-gradient(transparent,rgba(16,43,40,.9))}
        .media-copy{position:absolute;z-index:2;bottom:28px;left:30px;right:30px;color:#fff}
        .media-copy h3{font-size:27px;margin:10px 0 5px}
        .media-copy p{font-size:14px;color:#e1ebe7;margin:0}
        .media-side{min-height:390px}
        .process{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
        .process-step{position:relative;padding-top:23px;border-top:2px solid var(--pine)}
        .process-step b{font-family:Georgia,serif;color:var(--terra);font-size:26px}
        .process-step h3{font-size:19px;color:var(--pine);margin:12px 0 8px}
        .process-step p{color:var(--muted);font-size:14px;margin:0}
        .updates{display:grid;grid-template-columns:230px 1fr;gap:60px}
        .updates-index{border-left:3px solid var(--terra);padding-left:20px}
        .updates-index h2{font-size:31px;color:var(--pine);margin:0 0 12px}
        .updates-index p{color:var(--muted);font-size:14px}
        .updates-index a{color:var(--terra);font-size:14px;font-weight:700}
        .cms-list{border-top:1px solid var(--line)}
        .cms-item{display:grid;grid-template-columns:120px 1fr auto;gap:24px;align-items:center;border-bottom:1px solid var(--line);padding:18px 0}
        .cms-item time,.cms-item .cms-cat{font-size:12px;color:var(--muted)}
        .cms-item h3{font-size:18px;color:var(--pine);margin:0 0 4px}
        .cms-item p{font-size:14px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
        .cms-item .text-link{white-space:nowrap}
        .empty-state{padding:32px 0;color:var(--muted);border-bottom:1px solid var(--line)}
        .faq-list{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
        .faq-list details{border-bottom:1px solid var(--line)}
        .faq-list summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;color:var(--pine);font-size:17px;font-weight:750}
        .faq-list summary::-webkit-details-marker{display:none}
        .faq-list summary:after{content:"+";font-size:25px;color:var(--terra);font-weight:400;transition:var(--ease)}
        .faq-list details[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);font-size:15px;padding:0 48px 22px 4px}
        .cta-band{background:var(--terra);color:#fff;padding:65px 0}
        .cta-content{display:flex;align-items:center;justify-content:space-between;gap:35px}
        .cta-content h2{font-size:36px;margin:0 0 8px}
        .cta-content p{margin:0;color:#fbe8e0}
        .cta-band .button{background:#fff;color:var(--pine)}
        .cta-band .button:hover{background:var(--pine);color:#fff}
        .site-footer{background:var(--pine-deep);color:#d6e4df;padding:55px 0 22px}
        .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;padding-bottom:43px}
        .footer-brand{font-size:20px;color:#fff;font-weight:800;margin-bottom:14px}
        .footer-brand span{color:#ef9a7b}
        .footer-grid p{font-size:13px;color:#a9bcb6;max-width:280px;margin:0}
        .footer-title{font-weight:700;color:#fff;margin-bottom:14px}
        .footer-links{display:flex;flex-direction:column;gap:7px;font-size:13px;color:#adc0ba}
        .footer-links a:hover{color:#ef9a7b}
        .footer-bottom{border-top:1px solid rgba(214,228,223,.16);padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#91a8a0;font-size:12px}
        .footer-bottom a{color:#b8cbc4}
        @media(max-width:1024px){
            .nav-wrap{gap:22px}.brand{min-width:205px}.main-nav{gap:18px}
            .feature-layout{gap:40px}.section{padding:76px 0}
        }
        @media(max-width:768px){
            .container{width:min(100% - 36px,620px)}
            .topline{height:34px}.topline .container span{display:none}
            .topline .container{justify-content:flex-end}
            .nav-wrap{height:68px;justify-content:space-between}.brand{min-width:0}
            .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 18px 20px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
            .main-nav.open{display:flex}.main-nav a{padding:12px 0;border-bottom:1px solid var(--line)}
            .nav-cta{display:none}.menu-toggle{display:block}
            .hero,.hero .container{min-height:590px}.hero .container{padding:52px 0 105px}
            h1{font-size:42px}.hero-lead{font-size:16px;line-height:1.8}
            .hero-note .container{min-height:72px}.hero-note p{font-size:13px}
            .section{padding:62px 0}.section-head{display:block;margin-bottom:28px}.section-head h2,.feature-layout h2{font-size:30px}.section-head p{margin-top:15px}
            .keyword-map,.process,.media-layout,.feature-layout,.updates{display:block}
            .keyword-item{border-right:0;border-bottom:1px solid var(--line);margin:0;padding:24px 0}
            .keyword-item:last-child{border-bottom:0}.feature-layout .intro{margin-bottom:30px}
            .media-main,.media-side{min-height:290px;margin-bottom:16px}.media-side{margin-bottom:0}
            .process-step{margin-bottom:28px}.process-step:last-child{margin-bottom:0}
            .updates-index{margin-bottom:30px}.cms-item{grid-template-columns:1fr auto;gap:7px 16px;padding:17px 0}
            .cms-item time{grid-column:1}.cms-item .cms-cat{grid-column:2;text-align:right}.cms-item h3{grid-column:1 / -1;grid-row:2}
            .cms-item p{grid-column:1 / -1;grid-row:3}.cms-item .text-link{grid-column:1 / -1;grid-row:4;margin-top:5px}
            .cta-content{display:block}.cta-content h2{font-size:29px}.cta-content p{margin-bottom:24px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1 / -1}
            .footer-bottom{display:block}.footer-bottom div{margin-top:8px}
        }
        @media(max-width:520px){
            .container{width:calc(100% - 30px)}.brand-name{font-size:15px}.brand-name small{font-size:9px}
            .hero .container{min-height:560px}h1{font-size:36px}.hero-actions .button{width:100%}
            .hero-note p{max-width:100%;line-height:1.5}.hero-note a{display:none}
            .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
        }

/* roulang page: article */
:root{
            --pine:#183a36;
            --pine-deep:#102b28;
            --terra:#c76542;
            --terra-dark:#a94e31;
            --paper:#f7f5ef;
            --mist:#e8eeea;
            --ink:#202725;
            --muted:#65716d;
            --line:#d4dfda;
            --white:#fff;
            --radius:7px;
            --shadow:0 14px 38px rgba(24,58,54,.11);
            --ease:all .28s ease;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
        a{color:inherit;text-decoration:none}
        a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(199,101,66,.55);outline-offset:4px}
        img{display:block;max-width:100%;height:auto}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(1180px,calc(100% - 48px));margin:0 auto}
        .topline{height:34px;background:var(--pine-deep);color:#dce9e4;font-size:12px}
        .topline .container{height:100%;display:flex;align-items:center;justify-content:space-between}
        .topline a{color:#fff;border-bottom:1px solid rgba(255,255,255,.35)}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(247,245,239,.97);border-bottom:1px solid transparent;transition:var(--ease)}
        .site-header.scrolled{border-color:var(--line);box-shadow:0 5px 20px rgba(16,43,40,.06)}
        .nav-wrap{height:78px;display:flex;align-items:center;gap:42px}
        .brand{display:inline-flex;align-items:center;gap:12px;min-width:238px}
        .brand-mark{width:35px;height:35px;border:2px solid var(--terra);color:var(--terra);display:grid;place-items:center;font-family:Georgia,serif;font-size:18px;line-height:1;transform:rotate(-5deg)}
        .brand-name{font-weight:800;letter-spacing:0;font-size:17px;color:var(--pine)}
        .brand-name small{display:block;font-size:10px;color:var(--muted);font-weight:600;line-height:1.2;margin-top:1px}
        .main-nav{display:flex;align-items:center;gap:28px;flex:1}
        .main-nav a{position:relative;font-size:15px;color:var(--muted);padding:8px 0;transition:var(--ease)}
        .main-nav a:after{content:"";position:absolute;bottom:1px;left:0;width:0;height:2px;background:var(--terra);transition:var(--ease)}
        .main-nav a:hover,.main-nav a.active{color:var(--pine)}
        .main-nav a:hover:after,.main-nav a.active:after{width:100%}
        .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 20px;border-radius:4px;border:1px solid transparent;font-weight:700;transition:var(--ease)}
        .nav-cta{background:var(--terra);color:#fff;font-size:14px}
        .nav-cta:hover,.button.primary:hover{background:var(--terra-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(167,76,47,.22)}
        .menu-toggle{display:none;background:none;border:0;color:var(--pine);font-size:25px;min-width:44px;min-height:44px}
        .article-banner{position:relative;min-height:380px;color:#fff;background-image:linear-gradient(90deg,rgba(16,43,40,.9),rgba(16,43,40,.48)),url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center}
        .article-banner .container{min-height:380px;display:flex;align-items:center;padding:58px 0}
        .banner-copy{max-width:830px}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--terra)}
        .eyebrow:before,.section-kicker:before{content:"";display:inline-block;width:24px;height:2px;background:currentColor}
        .article-banner .eyebrow{color:#f1b19a}
        .breadcrumb{display:flex;flex-wrap:wrap;gap:9px;margin:0 0 17px;color:#d4e2dd;font-size:13px}
        .breadcrumb a:hover{color:#fff;text-decoration:underline}
        .banner-copy h1{font-size:clamp(34px,4.5vw,58px);line-height:1.22;margin:0 0 18px;color:#fff;font-weight:800;max-width:900px}
        .article-meta{display:flex;flex-wrap:wrap;gap:16px;color:#e0ebe7;font-size:14px}
        .meta-tag{color:#fff;border:1px solid rgba(255,255,255,.42);padding:3px 10px;border-radius:3px}
        .article-shell{padding:78px 0 96px}
        .reading-layout{display:grid;grid-template-columns:minmax(0,770px) 250px;gap:74px;align-items:start}
        .article-intro{border-left:3px solid var(--terra);padding:4px 0 4px 22px;margin-bottom:38px;color:var(--muted);font-size:18px;line-height:1.9}
        .article-cover{width:100%;aspect-ratio:16/7;object-fit:cover;border-radius:var(--radius);margin:0 0 42px;background:var(--mist)}
        .article-content{font-size:17px;line-height:2}
        .article-content h2{font-size:31px;line-height:1.4;color:var(--pine);margin:48px 0 18px;padding-top:10px}
        .article-content h3{font-size:22px;line-height:1.5;color:var(--pine);margin:34px 0 12px}
        .article-content p{margin:0 0 22px}
        .article-content ul,.article-content ol{padding-left:1.5em;margin:0 0 25px}
        .article-content li{margin:7px 0}
        .article-content blockquote{margin:30px 0;padding:22px 26px;background:var(--mist);border-left:4px solid var(--terra);color:var(--pine);font-size:18px}
        .article-content img{border-radius:var(--radius);margin:28px 0}
        .article-content table{width:100%;border-collapse:collapse;margin:28px 0;font-size:15px}
        .article-content th,.article-content td{border:1px solid var(--line);padding:12px 14px;text-align:left}
        .article-content th{background:var(--mist);color:var(--pine)}
        .article-content a{color:var(--terra);text-decoration:underline;text-underline-offset:3px}
        .article-content hr{border:0;border-top:1px solid var(--line);margin:38px 0}
        .toc{position:sticky;top:104px;border-top:2px solid var(--pine);padding-top:17px}
        .toc-title{font-size:14px;font-weight:800;color:var(--pine);margin-bottom:12px}
        .toc a{display:block;border-bottom:1px solid var(--line);padding:9px 0;color:var(--muted);font-size:14px;line-height:1.5}
        .toc a:hover{color:var(--terra);padding-left:5px}
        .article-actions{display:grid;grid-template-columns:1fr 1fr;gap:16px;border-top:1px solid var(--line);margin-top:54px;padding-top:25px}
        .action-link{min-height:76px;border:1px solid var(--line);padding:15px 18px;background:#fff;transition:var(--ease)}
        .action-link:hover{border-color:var(--terra);transform:translateY(-2px);box-shadow:var(--shadow)}
        .action-link small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
        .action-link strong{color:var(--pine);font-size:15px}
        .related{background:var(--mist);padding:76px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
        .section-head h2{font-size:36px;color:var(--pine);margin:12px 0 0}
        .section-head p{max-width:470px;color:var(--muted);margin:0}
        .related-list{border-top:1px solid var(--line)}
        .related-item{display:grid;grid-template-columns:110px 1fr 28px;gap:22px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line);transition:var(--ease)}
        .related-item:hover{padding-left:9px;background:rgba(255,255,255,.45)}
        .related-item time,.related-item small{font-size:12px;color:var(--muted)}
        .related-item h3{font-size:18px;color:var(--pine);margin:0 0 3px}
        .related-item p{font-size:14px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .topic-arrow{color:var(--terra);font-size:22px}
        .empty-state{padding:42px 24px;text-align:center;border:1px dashed var(--line);color:var(--muted);background:rgba(255,255,255,.45)}
        .empty-state strong{display:block;color:var(--pine);font-size:20px;margin-bottom:8px}
        .cta-band{background:var(--pine);color:#fff;padding:62px 0}
        .cta-band .container{display:flex;align-items:center;justify-content:space-between;gap:28px}
        .cta-band h2{font-size:32px;margin:0 0 8px}
        .cta-band p{color:#d8e7e1;margin:0}
        .cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
        .button.primary{background:var(--terra);color:#fff}
        .button.ghost{border-color:rgba(255,255,255,.62);color:#fff}
        .button.ghost:hover{background:#fff;color:var(--pine);border-color:#fff}
        .site-footer{background:var(--pine-deep);color:#d8e5e0;padding:62px 0 20px}
        .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:45px}
        .footer-brand{color:#fff;font-size:19px;font-weight:800;margin-bottom:13px}
        .footer-brand span{color:#e29a7d;font-size:13px;margin-left:5px}
        .site-footer p{font-size:14px;line-height:1.8;color:#aebfba;margin:0}
        .footer-title{font-size:14px;color:#fff;font-weight:800;margin-bottom:15px}
        .footer-links{display:flex;flex-direction:column;gap:7px;color:#aebfba;font-size:13px}
        .footer-links a:hover{color:#fff}
        .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;font-size:12px;color:#9fb2ac}
        .footer-bottom a:hover{color:#fff}
        @media (max-width:1024px){
            .nav-wrap{gap:20px}.brand{min-width:205px}.main-nav{gap:18px}
            .reading-layout{grid-template-columns:minmax(0,1fr) 210px;gap:42px}
        }
        @media (max-width:768px){
            .container{width:min(100% - 32px,620px)}
            .topline .container span{display:none}
            .nav-wrap{height:68px;justify-content:space-between}
            .brand{min-width:0}.brand-name{font-size:15px}.brand-mark{width:32px;height:32px}
            .menu-toggle{display:block}
            .main-nav{position:absolute;top:68px;left:16px;right:16px;display:none;flex-direction:column;align-items:stretch;gap:0;padding:12px 20px;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow)}
            .main-nav.open{display:flex}
            .main-nav a{padding:12px 0;border-bottom:1px solid var(--line)}
            .main-nav a:last-child{border-bottom:0}
            .nav-cta{min-height:40px;padding:0 12px;font-size:13px}
            .article-banner,.article-banner .container{min-height:340px}
            .article-banner .container{padding:45px 0 62px}
            .banner-copy h1{font-size:36px}
            .reading-layout{display:block}
            .toc{position:relative;top:auto;margin:0 0 38px;padding:16px;border:1px solid var(--line);background:#fff}
            .article-shell{padding:54px 0 68px}
            .article-content{font-size:16px}
            .article-content h2{font-size:27px;margin-top:39px}
            .article-cover{aspect-ratio:16/9;margin-bottom:30px}
            .article-actions{grid-template-columns:1fr}
            .related{padding:58px 0}
            .section-head{display:block}.section-head p{margin-top:14px}
            .related-item{grid-template-columns:78px 1fr 20px;gap:12px}
            .related-item p{white-space:normal}
            .cta-band .container{display:block}.cta-actions{margin-top:25px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
            .footer-bottom{display:block}.footer-bottom div{margin-top:10px}
        }
        @media (max-width:520px){
            .topline{height:30px;font-size:11px}
            .brand-name small{font-size:9px}
            .brand-mark{font-size:16px}
            .nav-cta{font-size:0;width:42px;padding:0}
            .nav-cta:after{content:"→";font-size:20px}
            .article-banner,.article-banner .container{min-height:360px}
            .banner-copy h1{font-size:32px}
            .article-meta{gap:8px;font-size:13px}
            .article-intro{font-size:16px;padding-left:16px}
            .cta-band h2{font-size:27px}
            .button{width:100%}
            .footer-grid{grid-template-columns:1fr}
        }

/* roulang page: category1 */
:root{
            --pine:#183a36;
            --pine-deep:#102b28;
            --terra:#c76542;
            --terra-dark:#a94e31;
            --paper:#f7f5ef;
            --mist:#e8eeea;
            --ink:#202725;
            --muted:#65716d;
            --line:#d4dfda;
            --white:#fff;
            --radius:7px;
            --shadow:0 14px 38px rgba(24,58,54,.11);
            --ease:all .28s ease;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(1180px,calc(100% - 48px));margin:0 auto}
        .topline{height:34px;background:var(--pine-deep);color:#dce9e4;font-size:12px}
        .topline .container{height:100%;display:flex;align-items:center;justify-content:space-between}
        .topline a{color:#fff;border-bottom:1px solid rgba(255,255,255,.35)}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(247,245,239,.96);border-bottom:1px solid transparent;transition:var(--ease)}
        .site-header.scrolled{border-color:var(--line);box-shadow:0 5px 20px rgba(16,43,40,.06)}
        .nav-wrap{height:78px;display:flex;align-items:center;gap:42px}
        .brand{display:inline-flex;align-items:center;gap:12px;min-width:238px}
        .brand-mark{width:35px;height:35px;border:2px solid var(--terra);color:var(--terra);display:grid;place-items:center;font-family:Georgia,serif;font-size:18px;line-height:1;transform:rotate(-5deg)}
        .brand-name{font-weight:800;letter-spacing:0;font-size:17px;color:var(--pine)}
        .brand-name small{display:block;font-size:10px;color:var(--muted);font-weight:600;line-height:1.2;margin-top:1px}
        .main-nav{display:flex;align-items:center;gap:28px;flex:1}
        .main-nav a{position:relative;font-size:15px;color:var(--muted);padding:8px 0;transition:var(--ease)}
        .main-nav a:after{content:"";position:absolute;bottom:1px;left:0;width:0;height:2px;background:var(--terra);transition:var(--ease)}
        .main-nav a:hover,.main-nav a.active{color:var(--pine)}
        .main-nav a:hover:after,.main-nav a.active:after{width:100%}
        .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 20px;border-radius:4px;border:1px solid transparent;font-weight:700;transition:var(--ease)}
        .nav-cta{background:var(--terra);color:#fff;font-size:14px}
        .nav-cta:hover,.button.primary:hover{background:var(--terra-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(167,76,47,.22)}
        .menu-toggle{display:none;background:none;border:0;color:var(--pine);font-size:25px;min-width:44px;min-height:44px}
        .button.primary{background:var(--terra);color:#fff}
        .button.secondary{border-color:var(--pine);color:var(--pine)}
        .button.secondary:hover{background:var(--pine);color:#fff}
        a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(199,101,66,.45);outline-offset:4px}
        .page-banner{background:var(--pine);color:#fff;padding:70px 0 82px;position:relative;overflow:hidden}
        .page-banner:after{content:"";position:absolute;right:0;top:0;width:38%;height:100%;background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;opacity:.28}
        .page-banner .container{position:relative;z-index:1}
        .breadcrumb{display:flex;gap:10px;align-items:center;color:#b8cbc4;font-size:13px;margin-bottom:26px}
        .breadcrumb a:hover{color:#fff}
        .breadcrumb .current{color:#f1b19a}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--terra)}
        .page-banner .eyebrow{color:#f1b19a}
        .eyebrow:before,.section-kicker:before{content:"";display:inline-block;width:24px;height:2px;background:currentColor}
        h1,h2,h3{line-height:1.25}
        h1{font-size:clamp(38px,5vw,62px);max-width:720px;margin:15px 0 18px;letter-spacing:0}
        .banner-lead{max-width:650px;color:#dce9e4;font-size:18px;margin:0}
        .intro-section{padding:90px 0 76px}
        .intro-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:76px;align-items:center}
        .intro-grid h2,.section-head h2{font-size:38px;color:var(--pine);margin:13px 0 18px}
        .intro-copy{color:var(--muted);font-size:17px}
        .image-frame{position:relative;aspect-ratio:1.18/1;overflow:hidden;border-radius:var(--radius);background:var(--mist)}
        .image-frame img{width:100%;height:100%;object-fit:cover}
        .image-caption{position:absolute;left:22px;right:22px;bottom:20px;background:rgba(16,43,40,.86);color:#fff;padding:14px 18px;font-size:14px}
        .section{padding:88px 0}
        .section.mist{background:var(--mist)}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
        .section-head p{max-width:470px;color:var(--muted);margin:0}
        .guide-layout{display:grid;grid-template-columns:270px 1fr;gap:58px}
        .side-index{border-top:2px solid var(--pine);align-self:start}
        .side-index a{display:flex;justify-content:space-between;padding:15px 0;border-bottom:1px solid var(--line);color:var(--muted);font-weight:700}
        .side-index a:hover,.side-index a.active{color:var(--terra);padding-left:8px}
        .guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
        .guide-item{padding:25px;border:1px solid var(--line);background:rgba(255,255,255,.58);border-radius:var(--radius);transition:var(--ease)}
        .guide-item:hover{border-color:var(--terra);transform:translateY(-3px);box-shadow:var(--shadow)}
        .guide-number{font-family:Georgia,serif;color:var(--terra);font-size:25px}
        .guide-item h3{color:var(--pine);font-size:21px;margin:10px 0 8px}
        .guide-item p{color:var(--muted);font-size:14px;margin:0 0 15px}
        .text-link{font-size:14px;font-weight:800;color:var(--terra);display:inline-flex;align-items:center;gap:7px}
        .text-link span{transition:var(--ease)}
        .text-link:hover span{transform:translateX(5px)}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .step{padding:30px 28px 32px 0;margin-right:28px;border-right:1px solid var(--line)}
        .step:last-child{border-right:0;margin-right:0}
        .step-no{color:var(--terra);font:700 28px Georgia,serif}
        .step h3{color:var(--pine);font-size:21px;margin:12px 0 7px}
        .step p{color:var(--muted);font-size:14px;margin:0}
        .scope-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}
        .scope-main{background:var(--pine);color:#fff;padding:42px;border-radius:var(--radius)}
        .scope-main h2{font-size:33px;margin:15px 0}
        .scope-main p{color:#dce9e4;margin:0}
        .scope-list{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line)}
        .scope-list div{background:var(--paper);padding:25px}
        .scope-list strong{display:block;color:var(--pine);margin-bottom:5px}
        .scope-list span{font-size:14px;color:var(--muted)}
        .faq-list{max-width:880px;border-top:1px solid var(--line)}
        details{border-bottom:1px solid var(--line);padding:0}
        summary{list-style:none;cursor:pointer;padding:21px 42px 21px 0;color:var(--pine);font-size:17px;font-weight:800;position:relative}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"＋";position:absolute;right:4px;color:var(--terra);font-size:22px;font-weight:400}
        details[open] summary:after{content:"−"}
        details p{color:var(--muted);font-size:15px;margin:-5px 38px 22px 0}
        .cta-band{background:var(--terra);color:#fff;padding:56px 0}
        .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
        .cta-inner h2{font-size:32px;margin:0 0 8px}
        .cta-inner p{margin:0;color:#f9e8e1}
        .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
        .cta-band .button.primary{background:var(--pine-deep)}
        .cta-band .button.primary:hover{background:#071d1a}
        .cta-band .button.secondary{border-color:#fff;color:#fff}
        .cta-band .button.secondary:hover{background:#fff;color:var(--terra)}
        .site-footer{background:var(--pine-deep);color:#dce9e4;padding:58px 0 20px}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
        .footer-brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:12px}
        .footer-brand span{color:#f1b19a;font-size:13px;margin-left:5px}
        .footer-grid p{font-size:14px;color:#a9beb7;margin:0}
        .footer-title{color:#fff;font-weight:800;margin-bottom:13px}
        .footer-links{display:flex;flex-direction:column;gap:7px;color:#a9beb7;font-size:14px}
        .footer-links a:hover{color:#f1b19a}
        .footer-bottom{border-top:1px solid rgba(220,233,228,.16);margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#91aaa2}
        .footer-bottom a:hover{color:#fff}
        @media(max-width:1024px){
            .nav-wrap{gap:22px}.brand{min-width:210px}.main-nav{gap:17px}
            .intro-grid{gap:42px}.guide-layout{gap:35px}
        }
        @media(max-width:767px){
            .container{width:min(100% - 32px,640px)}
            .topline{height:32px}.topline .container span{display:none}
            .nav-wrap{height:68px;justify-content:space-between}.brand{min-width:0}
            .brand-name{font-size:15px}.brand-mark{width:32px;height:32px}
            .menu-toggle{display:block}.nav-cta{display:none}
            .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);padding:12px 24px 20px;border-bottom:1px solid var(--line);box-shadow:0 12px 22px rgba(16,43,40,.1);flex-direction:column;align-items:stretch;gap:0}
            .main-nav.open{display:flex}.main-nav a{padding:13px 0;border-bottom:1px solid var(--line)}
            .page-banner{padding:46px 0 58px}.page-banner:after{width:55%;opacity:.18}
            h1{font-size:40px}.banner-lead{font-size:16px}
            .intro-section,.section{padding:62px 0}.intro-grid,.scope-grid{grid-template-columns:1fr;gap:30px}
            .intro-grid h2,.section-head h2{font-size:30px}
            .section-head{display:block;margin-bottom:28px}.section-head p{margin-top:12px}
            .guide-layout{grid-template-columns:1fr;gap:30px}.side-index{display:flex;overflow:auto;gap:24px;border-top:0;border-bottom:1px solid var(--line)}
            .side-index a{white-space:nowrap;border-bottom:2px solid transparent;padding:10px 0}
            .guide-list{grid-template-columns:1fr}.steps{grid-template-columns:1fr;border-bottom:0}
            .step{border-right:0;border-bottom:1px solid var(--line);margin:0;padding:25px 0}
            .scope-main{padding:30px}.scope-list{grid-template-columns:1fr}
            .cta-inner{display:block}.cta-actions{margin-top:25px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-bottom{display:block}.footer-bottom div{margin-top:9px}
        }
        @media(max-width:520px){
            .footer-grid{grid-template-columns:1fr}.brand-name small{font-size:9px}
            .cta-actions .button{width:100%}
        }