/* roulang page: index */
:root{
      --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
      --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
      --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
      --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;width:100%;height:auto;object-fit:cover}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .topline{height:62px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
    .brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
    .brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
    .utility{display:flex;align-items:center;gap:20px;color:var(--muted);font-size:13px}
    .utility a:hover{color:var(--brand-dark)}
    .search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
    .search-mini input{width:125px;border:0;background:none;outline:0;color:var(--ink);font-size:13px}
    .site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
    .nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
    .nav-row::-webkit-scrollbar{display:none}
    .nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
    .nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
    .nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
    .hero{min-height:630px;position:relative;display:flex;align-items:center;background:#3e433d url('/assets/images/backpic/back-1.webp') center/cover no-repeat;color:#fff;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(27,31,27,.92),rgba(27,31,27,.52) 58%,rgba(27,31,27,.25))}
    .hero-inner{position:relative;z-index:1;width:100%;padding-top:78px;padding-bottom:88px}
    .hero-copy{max-width:720px}
    .eyebrow,.section-kicker{color:#be8a61;font-size:12px;letter-spacing:.18em;font-weight:800;text-transform:uppercase}
    .hero h1{font-size:clamp(42px,6vw,76px);line-height:1.15;margin:20px 0 24px;letter-spacing:-.05em}
    .hero p{font-size:18px;line-height:2;max-width:680px;color:#eeeade}
    .actions{display:flex;gap:12px;flex-wrap:wrap;margin:32px 0}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--brand);color:#fff}
    .btn-primary:hover{background:#c17c47;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
    .btn-light{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.08)}
    .btn-light:hover{background:#fff;color:var(--ink)}
    .btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}
    .btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .hero-strip{display:flex;gap:0;margin-top:52px;border-top:1px solid rgba(255,255,255,.25);max-width:920px}
    .hero-point{padding:18px 35px 0 0;margin-right:35px;border-right:1px solid rgba(255,255,255,.22);font-size:13px;color:#ddd9cc}
    .hero-point strong{display:block;color:#fff;font-size:22px;line-height:1.2;margin-bottom:4px}
    .section{padding:105px 0}
    .section.alt{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:46px}
    .section-head h2{font-size:clamp(28px,4vw,46px);line-height:1.25;margin:9px 0 0;letter-spacing:-.04em}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .service-layout{display:grid;grid-template-columns:250px 1fr;gap:40px}
    .service-index{border-left:2px solid var(--sand)}
    .service-index button{display:block;width:100%;padding:18px 20px;text-align:left;border:0;border-left:3px solid transparent;background:none;color:var(--muted);transition:var(--ease)}
    .service-index button:hover,.service-index button.active{border-left-color:var(--brand);background:var(--surface);color:var(--brand-dark);font-weight:700}
    .service-index b{display:block;color:var(--brand);font-size:12px;margin-bottom:4px}
    .service-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
    .service-panel img{height:300px;border-radius:12px}
    .service-panel h3{font-size:29px;line-height:1.35;margin:10px 0 15px}
    .service-panel p{color:var(--muted)}
    .tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
    .tag{display:inline-block;padding:4px 10px;background:var(--soft);border-radius:5px;color:var(--green);font-size:12px}
    .metric-band{display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
    .metric{background:var(--surface);padding:30px 25px;min-height:170px}
    .metric:first-child{background:var(--green);color:#fff}
    .metric strong{font-size:36px;display:block;line-height:1.2;margin:13px 0 8px}
    .metric p{font-size:13px;color:var(--muted);margin:0}
    .metric:first-child p{color:#e1e8de}
    .case-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}
    .case-main,.case-small{position:relative;overflow:hidden;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}
    .case-main img{height:420px}.case-small img{height:190px}
    .case-main .case-text{position:absolute;bottom:0;left:0;right:0;padding:65px 30px 25px;color:#fff;background:linear-gradient(transparent,rgba(20,24,20,.9))}
    .case-small .case-text{padding:18px 20px 21px}
    .case-small h3,.case-main h3{margin:8px 0;font-size:20px;line-height:1.45}
    .case-main h3{font-size:30px}
    .case-text p{margin:0;color:inherit;opacity:.84;font-size:13px}
    .case-side{display:grid;gap:22px}
    .news-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px}
    .news-feature{background:var(--surface);border:1px solid var(--line);padding:30px;border-radius:var(--radius)}
    .news-feature img{height:255px;border-radius:10px;margin-bottom:24px}
    .news-feature h3{font-size:26px;line-height:1.45;margin:12px 0}
    .news-list{border-top:1px solid var(--line)}
    .news-item{display:grid;grid-template-columns:90px 1fr auto;gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
    .news-date{font-size:13px;color:var(--brand-dark);font-weight:700}
    .news-item h3{font-size:16px;margin:0 0 5px}
    .news-item p{font-size:13px;color:var(--muted);margin:0;line-height:1.65}
    .more{font-size:12px;color:var(--brand-dark);white-space:nowrap}
    .brand-story{display:grid;grid-template-columns:.75fr 1.25fr;gap:56px;align-items:center}
    .story-label{font-size:clamp(34px,5vw,64px);font-weight:800;line-height:1.16;color:var(--green);letter-spacing:-.06em}
    .story-copy{font-size:16px;color:var(--muted)}
    .story-copy p{margin:0 0 18px}
    .plan-layout{display:grid;grid-template-columns:280px 1fr;gap:38px}
    .plan-tabs{display:flex;flex-direction:column;gap:9px}
    .plan-tab{padding:18px 20px;border:1px solid var(--line);background:var(--surface);border-radius:10px;text-align:left;color:var(--muted)}
    .plan-tab.active,.plan-tab:hover{background:var(--green);border-color:var(--green);color:#fff}
    .plan-content{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:35px}
    .plan-content h3{font-size:30px;margin:0 0 13px}
    .plan-content p{color:var(--muted)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}
    .step{border-top:3px solid var(--brand);padding-top:15px}
    .step b{color:var(--brand);font-size:13px}.step h4{margin:8px 0;font-size:17px}.step p{font-size:13px;margin:0}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;padding:22px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}
    .faq-q span:last-child{color:var(--brand);font-size:22px}
    .faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}
    .faq-item.open .faq-a{display:block}
    .contact-section{background:var(--green);color:#fff}
    .contact-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
    .contact-layout h2{font-size:43px;line-height:1.3;margin:10px 0 18px}
    .contact-layout p{color:#dce5da}
    .contact-info{margin-top:35px;padding-top:22px;border-top:1px solid rgba(255,255,255,.25)}
    .contact-form{background:var(--surface);color:var(--ink);padding:30px;border-radius:var(--radius)}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}
    .required{color:var(--danger)}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fffdf9;border-radius:7px;padding:12px 13px;margin-bottom:18px;outline:none}
    textarea{min-height:125px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(178,109,56,.14)}
    .form-note{font-size:12px;color:var(--muted);margin:12px 0 0}
    .cta-band{padding:62px 0;background:var(--sand)}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta-inner h2{font-size:32px;margin:0 0 8px}.cta-inner p{margin:0;color:var(--muted)}
    .footer{background:#252b27;color:#d9ded7;padding:65px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.1fr;gap:35px;padding-bottom:45px;border-bottom:1px solid rgba(255,255,255,.15)}
    .footer h3{font-size:15px;color:#fff;margin:0 0 15px}.footer p,.footer a{font-size:13px;color:#aeb9ae}.footer a:hover{color:#e3a36f}
    .footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}
    .copyright{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:20px;font-size:12px;color:#96a298}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    :focus-visible{outline:3px solid #dda678;outline-offset:3px}
    @media(max-width:992px){
      .service-layout,.plan-layout{grid-template-columns:1fr}.service-index{display:flex;overflow-x:auto;border-left:0;border-bottom:2px solid var(--sand)}.service-index button{min-width:150px;border-left:0;border-bottom:3px solid transparent}.service-index button:hover,.service-index button.active{border-bottom-color:var(--brand)}
      .metric-band{grid-template-columns:repeat(2,1fr)}.metric:first-child{grid-column:span 2}.case-grid,.news-wrap,.contact-layout,.faq-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .topline{height:56px}.utility a:not(.search-mini),.utility .trend{display:none}.menu-btn{display:block}.nav-row{display:none;flex-wrap:wrap;padding:10px 0}.nav-row.open{display:flex}.nav-link{padding:11px 10px}.hero{min-height:650px}.hero-inner{padding-top:65px}.hero p{font-size:16px}.hero-strip{margin-top:35px;flex-wrap:wrap}.hero-point{margin-bottom:16px}.section{padding:72px 0}.section-head{display:block;margin-bottom:32px}.section-head p{margin-top:15px}.service-panel,.brand-story{grid-template-columns:1fr}.service-panel img{height:240px}.steps{grid-template-columns:repeat(2,1fr)}.cta-inner{display:block}.cta-inner .btn{margin-top:22px}
    }
    @media(max-width:520px){
      .container{padding:0 18px}.brand{font-size:17px}.hero h1{font-size:41px}.actions .btn{width:100%}.metric-band{grid-template-columns:1fr}.metric:first-child{grid-column:auto}.case-main img{height:300px}.case-main h3{font-size:22px}.news-item{grid-template-columns:1fr;gap:4px}.news-item .more{justify-self:start;margin-top:7px}.steps{grid-template-columns:1fr}.contact-layout{gap:30px}.contact-form{padding:21px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:7px}
    }

/* roulang page: category3 */
:root{
      --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
      --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
      --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
      --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;width:100%;height:auto;object-fit:cover}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .topline{background:var(--surface);padding:16px 0;border-bottom:1px solid var(--line)}
    .brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
    .brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
    .utility{display:flex;align-items:center;gap:22px}
    .utility a:hover{color:var(--brand-dark)}
    .search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
    .search-mini input{width:125px;border:0;background:none;outline:0;color:var(--ink);font-size:13px;margin:0;padding:2px}
    .site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
    .nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
    .nav-row::-webkit-scrollbar{display:none}
    .nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
    .nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
    .nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
    .page-hero{background:#3e433d url('/assets/images/backpic/back-2.webp') center/cover no-repeat;color:#fff;position:relative;overflow:hidden}
    .page-hero:before{content:"";position:absolute;inset:0;background:rgba(29,34,29,.72)}
    .page-hero-inner{position:relative;padding:92px 28px 96px}
    .breadcrumb{font-size:13px;color:#d8d7ca;margin-bottom:27px}
    .breadcrumb a:hover{color:#fff}
    .eyebrow,.section-kicker{color:#c38a60;font-size:12px;letter-spacing:.18em;font-weight:800}
    .page-hero h1{font-size:clamp(38px,5vw,68px);line-height:1.2;letter-spacing:-.05em;margin:16px 0 20px;max-width:760px}
    .page-hero p{font-size:18px;color:#eeece1;max-width:690px;margin:0}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
    .badge{border:1px solid rgba(255,255,255,.35);padding:7px 13px;border-radius:5px;font-size:12px;color:#eeeade}
    .section{padding:94px 0}
    .section.alt{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:42px}
    .section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.25;margin:9px 0 0;letter-spacing:-.04em}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .timeline-wrap{max-width:980px;margin:0 auto;position:relative}
    .timeline-wrap:before{content:"";position:absolute;left:104px;top:0;bottom:0;width:1px;background:#cfc9ba}
    .timeline-item{display:grid;grid-template-columns:105px 28px 1fr;gap:0;margin-bottom:18px;position:relative}
    .timeline-date{padding-top:28px;color:var(--brand-dark);font-weight:800;font-size:14px;line-height:1.4}
    .timeline-dot{width:11px;height:11px;background:var(--brand);border:3px solid var(--paper);box-shadow:0 0 0 1px var(--brand);border-radius:50%;margin:32px auto 0;z-index:1}
    .timeline-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:25px 28px;margin-bottom:5px;transition:var(--ease)}
    .timeline-card:hover{border-color:#c69a76;box-shadow:var(--shadow);transform:translateX(4px)}
    .timeline-card h3{font-size:21px;margin:9px 0 7px;line-height:1.45}
    .timeline-card p{color:var(--muted);margin:0 0 14px;font-size:14px}
    .tags{display:flex;flex-wrap:wrap;gap:8px}
    .tag{display:inline-block;padding:4px 10px;background:var(--soft);border-radius:5px;color:var(--green);font-size:12px}
    .read-link{color:var(--brand-dark);font-weight:700;font-size:13px}
    .read-link:hover{color:var(--brand)}
    .read-link:after{content:"  →"}
    .intro-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:62px;align-items:start}
    .intro-image{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--surface)}
    .intro-image img{aspect-ratio:1.2/1}
    .reading-copy{max-width:720px;color:var(--muted)}
    .reading-copy p{margin:0 0 20px}
    .quote{border-left:4px solid var(--brand);padding:12px 0 12px 22px;color:var(--ink);font-size:20px;line-height:1.7;margin:28px 0}
    .update-table{border-top:1px solid var(--line)}
    .update-row{display:grid;grid-template-columns:150px 1fr 120px;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);align-items:center}
    .update-row strong{font-size:15px}
    .update-row span{font-size:13px;color:var(--muted)}
    .status{color:var(--green)!important;font-weight:700}
    .related-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:20px}
    .related-card{background:var(--surface);border:1px solid var(--line);padding:25px;border-radius:12px;min-height:210px;transition:var(--ease)}
    .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c69a76}
    .related-card h3{font-size:20px;line-height:1.45;margin:13px 0 8px}
    .related-card p{font-size:14px;color:var(--muted);margin:0 0 17px}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;padding:21px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}
    .faq-q:focus-visible,.btn:focus-visible,.nav-link:focus-visible,.read-link:focus-visible{outline:3px solid rgba(178,109,56,.35);outline-offset:3px}
    .faq-q span:last-child{color:var(--brand);font-size:22px}
    .faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}
    .faq-item.open .faq-a{display:block}
    .cta{background:var(--green);color:#fff}
    .cta-box{display:flex;justify-content:space-between;align-items:center;gap:35px}
    .cta h2{font-size:clamp(28px,4vw,43px);line-height:1.3;margin:9px 0 12px}
    .cta p{color:#e6e7dc;max-width:650px;margin:0}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--brand);color:#fff}
    .btn-primary:hover{background:#c17c47;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
    .btn-light{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.08)}
    .btn-light:hover{background:#fff;color:var(--ink)}
    .btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}
    .btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .footer{background:#272c28;color:#d8d9d0;padding:68px 0 25px}
    .footer .brand{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.25fr .9fr .8fr 1fr;gap:38px}
    .footer h3{font-size:15px;color:#fff;margin:3px 0 16px}
    .footer p{font-size:13px;line-height:1.8;margin:0 0 8px;color:#aeb4aa}
    .footer a:hover{color:#e3a36d}
    .footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;font-size:13px;color:#aeb4aa}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:45px;padding-top:18px;display:flex;flex-wrap:wrap;gap:18px;color:#929a90;font-size:12px}
    @media(max-width:992px){.footer-grid{grid-template-columns:1fr 1fr}.intro-grid,.faq-layout{gap:30px}.related-grid{grid-template-columns:1fr 1fr}.related-card:first-child{grid-column:span 2}}
    @media(max-width:768px){
      .container{padding:0 20px}.utility{gap:10px}.trend{display:none}.menu-btn{display:block}
      .site-nav{display:none}.site-nav.open{display:block}.nav-row{display:flex;flex-wrap:wrap;padding-top:8px;padding-bottom:8px;overflow:visible}
      .nav-link{padding:10px 12px}.nav-link:after{bottom:3px}
      .page-hero-inner{padding:64px 20px 68px}.page-hero h1{font-size:42px}
      .section{padding:67px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:16px}
      .timeline-wrap:before{left:9px}.timeline-item{grid-template-columns:28px 1fr;gap:0}.timeline-date{grid-column:2;padding:0 0 6px;font-size:13px}.timeline-dot{grid-column:1;grid-row:1 / span 2;margin:8px auto 0}.timeline-card{grid-column:2;padding:20px;margin-bottom:18px}
      .intro-grid,.faq-layout{grid-template-columns:1fr}.intro-image{max-width:520px}.update-row{grid-template-columns:1fr 1.4fr;gap:8px}.update-row .status{grid-column:2}
      .cta-box{display:block}.cta .btn{margin-top:25px}.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      .brand{font-size:18px}.search-mini input{width:105px}.page-hero h1{font-size:35px}.page-hero p{font-size:16px}
      .related-grid{grid-template-columns:1fr}.related-card:first-child{grid-column:auto}.update-row{display:block}.update-row strong,.update-row span{display:block;margin-bottom:5px}
      .footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}
    }

/* roulang page: category1 */
:root{
 --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
 --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
 --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
 --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
a{color:inherit;text-decoration:none;transition:var(--ease)}
img{display:block;width:100%;height:auto;object-fit:cover}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{max-width:1240px;margin:0 auto;padding:0 28px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topline{background:var(--surface);padding:14px 0;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
.brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
.utility{display:flex;align-items:center;gap:24px}
.search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
.search-mini input{width:125px;border:0;background:none;outline:0;color:var(--ink);font-size:13px;margin:0;padding:2px}
.trend{font-size:13px;color:var(--muted)}
.trend:hover{color:var(--brand-dark)}
.site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
.nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
.nav-row::-webkit-scrollbar{display:none}
.nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
.nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
.nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
.nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
.menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
.hero-inner{background:#3e433d url('/assets/images/backpic/back-2.webp') center/cover no-repeat;color:#fff;position:relative;overflow:hidden}
.hero-inner:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(27,31,27,.91),rgba(27,31,27,.52))}
.inner-hero-grid{position:relative;z-index:1;min-height:500px;display:grid;grid-template-columns:5fr 7fr;gap:58px;align-items:center;padding-top:70px;padding-bottom:70px}
.crumb{font-size:13px;color:#d9d7ca;margin-bottom:22px}
.crumb a:hover{color:#fff}
.eyebrow,.section-kicker{color:#be8a61;font-size:12px;letter-spacing:.18em;font-weight:800}
.hero-inner h1{font-size:clamp(38px,5vw,66px);line-height:1.18;margin:18px 0 22px;letter-spacing:-.05em}
.hero-inner p{font-size:17px;color:#eeeade;line-height:1.95;margin:0 0 28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#c17c47;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
.btn-light{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.08)}
.btn-light:hover{background:#fff;color:var(--ink)}
.btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}
.btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
.hero-image{transform:translate(18px,16px) rotate(2deg);border:10px solid rgba(255,255,255,.14);box-shadow:0 24px 50px rgba(0,0,0,.25);border-radius:18px;overflow:hidden}
.hero-image img{height:350px}
.section{padding:94px 0}
.section.alt{background:var(--soft)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:42px}
.section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.25;margin:9px 0 0;letter-spacing:-.04em}
.section-head p{max-width:570px;color:var(--muted);margin:0}
.split-index{display:grid;grid-template-columns:280px 1fr;gap:42px}
.index-list{border-top:1px solid var(--line)}
.index-list a{display:flex;justify-content:space-between;gap:12px;padding:17px 14px;border-bottom:1px solid var(--line);color:var(--muted)}
.index-list a:hover,.index-list a.active{color:var(--brand-dark);background:var(--surface);padding-left:20px}
.index-list b{color:var(--brand);font-size:13px}
.feature-panel{display:grid;grid-template-columns:1fr 1fr;gap:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.feature-panel img{height:280px;border-radius:12px}
.feature-panel h3{font-size:27px;line-height:1.4;margin:5px 0 15px}
.feature-panel p{color:var(--muted);margin:0 0 16px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.tag{display:inline-block;padding:4px 10px;background:var(--soft);border-radius:5px;color:var(--green);font-size:12px}
.topic-list{margin-top:24px;border-top:1px solid var(--line)}
.topic-item{display:grid;grid-template-columns:100px 1fr auto;gap:20px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line)}
.topic-item time{font-size:13px;color:var(--brand-dark);font-weight:700}
.topic-item h3{font-size:18px;margin:0 0 4px}
.topic-item p{font-size:14px;color:var(--muted);margin:0}
.arrow{color:var(--brand-dark);font-weight:700;white-space:nowrap}
.arrow:hover{transform:translateX(4px);color:var(--brand)}
.story{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.story-aside{background:var(--green);color:#fff;border-radius:var(--radius);padding:31px;position:sticky;top:100px}
.story-aside h3{font-size:25px;margin:10px 0 14px}
.story-aside p{color:#e4e6dc;font-size:14px}
.story-body{max-width:760px}
.story-body h2{font-size:34px;line-height:1.35;margin:0 0 20px}
.story-body h3{font-size:22px;margin:30px 0 8px}
.story-body p{color:var(--muted);margin:0 0 17px}
.note{border-left:3px solid var(--brand);padding:15px 20px;background:var(--surface);color:var(--muted);margin:25px 0}
.matrix{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
.matrix-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.matrix-card.large{grid-row:span 2;background:var(--ink);color:#fff}
.matrix-card h3{font-size:23px;margin:5px 0 12px}
.matrix-card p{color:var(--muted);font-size:14px}
.matrix-card.large p{color:#d8d7cd}
.metric-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metric{padding:25px 22px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric strong{display:block;font-size:28px;color:var(--brand-dark);line-height:1.2;margin-bottom:5px}
.metric span{font-size:13px;color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
.faq-intro p{color:var(--muted)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;padding:21px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}
.faq-q:focus-visible{outline:3px solid rgba(178,109,56,.3);outline-offset:5px}
.faq-q span:last-child{color:var(--brand);font-size:22px}
.faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}
.faq-item.open .faq-a{display:block}
.contact-section{background:var(--green);color:#fff}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:55px;align-items:start}
.contact-copy p{color:#e4e6dc}
.contact-form{background:var(--surface);color:var(--ink);padding:30px;border-radius:var(--radius);box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}
label{display:block;font-weight:700;font-size:13px;margin-bottom:6px}
input,select,textarea{width:100%;border:1px solid var(--line);background:#fffdf9;border-radius:7px;padding:12px 13px;margin-bottom:18px;outline:none}
textarea{min-height:125px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(178,109,56,.14)}
.form-status{font-size:13px;color:var(--green);margin-top:12px;display:none}
.footer{background:#252b27;color:#d9d8cf;padding:62px 0 24px}
.footer .brand{color:#fff}
.footer p{color:#aeb3aa;font-size:13px;line-height:1.8}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr .8fr 1.1fr;gap:38px}
.footer h3{color:#fff;font-size:15px;margin:4px 0 17px}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.footer a:hover{color:#e0a16e}
.copyright{display:flex;flex-wrap:wrap;gap:18px;border-top:1px solid #414841;margin-top:42px;padding-top:20px;color:#9da49c;font-size:12px}
@media(max-width:992px){
 .inner-hero-grid{gap:30px}
 .story{gap:32px}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
 .container{padding:0 20px}
 .topline .container{align-items:center}
 .utility{gap:12px}
 .search-mini input{width:90px}
 .menu-btn{display:block}
 .site-nav{display:none}
 .site-nav.open{display:block}
 .site-nav .nav-row{display:flex;flex-direction:column;align-items:stretch;gap:0;padding-top:8px;padding-bottom:8px}
 .nav-link{padding:12px 8px}
 .nav-link:after{left:8px;right:auto;width:28px;bottom:5px}
 .inner-hero-grid{grid-template-columns:1fr;padding-top:48px;padding-bottom:55px}
 .hero-image{transform:none;margin-top:12px}
 .hero-image img{height:260px}
 .section{padding:70px 0}
 .section-head,.story,.contact-grid,.faq-layout{display:block}
 .section-head p{margin-top:15px}
 .split-index,.matrix{grid-template-columns:1fr}
 .index-list{margin-bottom:8px}
 .feature-panel{grid-template-columns:1fr}
 .topic-item{grid-template-columns:80px 1fr}
 .topic-item .arrow{grid-column:2}
 .metric-band{grid-template-columns:1fr 1fr}
 .metric:nth-child(2){border-right:0}
 .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .story-aside{position:static;margin-bottom:30px}
 .contact-copy{margin-bottom:30px}
}
@media(max-width:520px){
 body{font-size:15px}
 .brand{font-size:18px}
 .trend{display:none}
 .hero-inner h1{font-size:38px}
 .hero-actions{display:grid;grid-template-columns:1fr}
 .btn{width:100%}
 .feature-panel{padding:18px}
 .feature-panel h3{font-size:23px}
 .topic-item{grid-template-columns:1fr;gap:4px}
 .topic-item .arrow{grid-column:auto;margin-top:7px}
 .metric strong{font-size:23px}
 .form-row{grid-template-columns:1fr;gap:0}
 .footer-grid{grid-template-columns:1fr}
 .copyright{display:block}
 .copyright span{display:block;margin-bottom:9px}
}

/* roulang page: category2 */
:root{
      --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
      --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
      --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
      --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--brand-dark)}
    img{display:block;width:100%;height:auto;object-fit:cover}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .topline{background:var(--surface);padding:17px 0;border-bottom:1px solid var(--line)}
    .brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
    .brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
    .utility{display:flex;align-items:center;gap:25px}
    .search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
    .search-mini input{width:145px;border:0;background:none;outline:0;color:var(--ink);font-size:13px;margin:0;padding:4px 0}
    .trend{font-size:13px;color:var(--muted)}
    .trend:hover{color:var(--brand-dark)}
    .site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
    .nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
    .nav-row::-webkit-scrollbar{display:none}
    .nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
    .nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
    .nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
    .page-hero{position:relative;overflow:hidden;color:#fff;background:#41473f url('/assets/images/backpic/back-2.webp') center/cover no-repeat}
    .page-hero:before{content:"";position:absolute;inset:0;background:rgba(29,34,29,.73)}
    .page-hero-inner{position:relative;z-index:1;padding:86px 28px 90px}
    .crumbs{font-size:13px;color:#d9d8ca;margin-bottom:32px}
    .crumbs a{color:#fff}
    .eyebrow,.section-kicker{color:#c48a5c;font-size:12px;letter-spacing:.18em;font-weight:800}
    .page-hero h1{font-size:clamp(38px,5.5vw,68px);line-height:1.18;letter-spacing:-.05em;margin:18px 0 22px;max-width:780px}
    .page-hero p{max-width:690px;color:#eeeade;font-size:18px;line-height:1.95;margin:0}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
    .hero-meta span,.tag{display:inline-block;padding:5px 11px;border-radius:5px;background:var(--soft);color:var(--green);font-size:12px}
    .hero-meta span{background:rgba(255,255,255,.12);color:#f5f0e7;border:1px solid rgba(255,255,255,.18)}
    .section{padding:88px 0}
    .section.alt{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:40px}
    .section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.25;margin:9px 0 0;letter-spacing:-.04em}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .matrix{display:grid;grid-template-columns:1.18fr .82fr;gap:24px}
    .feature-card,.matrix-card,.reading-panel,.process-panel,.contact-form{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 5px 18px rgba(43,38,29,.035)}
    .feature-card{overflow:hidden}
    .feature-card img{height:330px}
    .feature-copy{padding:28px 30px 32px}
    .feature-copy h2{font-size:29px;line-height:1.4;margin:12px 0}
    .feature-copy p,.matrix-card p,.reading-panel p{color:var(--muted);margin:0}
    .matrix-side{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .matrix-card{padding:22px 20px;transition:var(--ease)}
    .matrix-card:hover{transform:translateY(-4px);border-color:#cda47d;box-shadow:var(--shadow)}
    .matrix-card h3{font-size:18px;line-height:1.45;margin:13px 0 8px}
    .matrix-card .index{font-size:13px;color:var(--brand);font-weight:800}
    .matrix-card a,.feature-copy a{display:inline-flex;margin-top:18px;color:var(--brand-dark);font-size:14px;font-weight:700}
    .matrix-card a:after,.feature-copy a:after{content:"→";margin-left:8px;transition:var(--ease)}
    .matrix-card a:hover:after,.feature-copy a:hover:after{transform:translateX(4px)}
    .intro-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}
    .intro-grid h2{font-size:36px;line-height:1.35;margin:10px 0}
    .intro-copy{max-width:760px}
    .intro-copy p{color:var(--muted);margin:0 0 18px}
    .quote-box{border-left:3px solid var(--brand);padding:4px 0 4px 22px;color:var(--brand-dark);font-size:19px;line-height:1.7;margin-top:28px}
    .guide-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px}
    .guide-index{background:var(--green);color:#fff;border-radius:var(--radius);padding:28px}
    .guide-index h3{margin:0 0 20px;font-size:20px}
    .guide-index a{display:block;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.2);color:#e8e5da}
    .guide-index a:hover{color:#fff;padding-left:6px}
    .reading-panel{padding:34px}
    .reading-panel h3{font-size:25px;margin:0 0 13px}
    .reading-panel p{margin-bottom:18px}
    .check-list{padding:0;margin:20px 0 0;list-style:none}
    .check-list li{padding:12px 0 12px 27px;border-bottom:1px solid var(--line);position:relative;color:var(--muted)}
    .check-list li:before{content:"";position:absolute;left:0;top:20px;width:9px;height:9px;background:var(--brand);border-radius:50%}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .step{padding:28px 23px;border-right:1px solid var(--line)}
    .step:last-child{border-right:0}
    .step-no{color:var(--brand);font-weight:800;font-size:13px}
    .step h3{font-size:19px;margin:13px 0 8px}
    .step p{color:var(--muted);font-size:14px;margin:0}
    .scenario{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:25px}
    .scenario article{padding:26px;background:#fff8ed;border-radius:12px;border:1px solid #ead8bd}
    .scenario h3{margin:0 0 10px;font-size:20px}
    .scenario p{color:var(--muted);margin:0}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
    .faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;padding:21px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}
    .faq-q:focus-visible,.btn:focus-visible,.nav-link:focus-visible,.footer a:focus-visible{outline:3px solid rgba(178,109,56,.35);outline-offset:4px}
    .faq-q span:last-child{color:var(--brand);font-size:22px}
    .faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}
    .faq-item.open .faq-a{display:block}
    .cta{background:#e6d6bd;padding:62px 0}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{font-size:32px;line-height:1.35;margin:7px 0 10px}
    .cta p{color:#655e51;margin:0;max-width:650px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:#c17c47;color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
    .btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}.btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .contact-section{background:var(--green);color:#fff}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}
    .contact-grid p{color:#e3e3d8}
    .contact-form{color:var(--ink);padding:30px}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fffdf9;border-radius:7px;padding:12px 13px;margin-bottom:18px;outline:none}
    textarea{min-height:125px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(178,109,56,.12)}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .form-note{font-size:12px;color:var(--muted);margin-top:12px}
    .footer{background:#252b27;color:#d8d9cf;padding:64px 0 22px}
    .footer .brand{color:#fff}.footer p{font-size:13px;color:#aeb5aa;line-height:1.8}
    .footer-grid{display:grid;grid-template-columns:1.35fr .9fr .8fr 1fr;gap:40px}
    .footer h3{color:#fff;font-size:15px;margin:3px 0 17px}
    .footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;font-size:13px}
    .footer a:hover{color:#e2a36f}
    .copyright{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:20px;color:#98a095;font-size:12px}
    @media(max-width:992px){.intro-grid,.guide-grid,.contact-grid{grid-template-columns:1fr}.matrix{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step{border-bottom:1px solid var(--line)}.faq-layout{gap:30px}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:768px){.container{padding:0 20px}.utility{gap:12px}.search-mini input{width:105px}.menu-btn{display:block}.site-nav{display:none}.site-nav.open{display:block}.nav-row{display:flex;flex-direction:column;align-items:stretch;padding:8px 20px;max-height:70vh;overflow-y:auto}.nav-link{padding:13px 4px}.nav-link:after{left:0;right:auto;width:35px;bottom:5px}.page-hero-inner{padding:62px 20px 66px}.section{padding:68px 0}.section-head,.cta-inner{display:block}.section-head p{margin-top:16px}.cta .btn{margin-top:25px}.hero-meta{gap:7px}.scenario{grid-template-columns:1fr}.contact-grid{gap:35px}}
    @media(max-width:576px){body{font-size:15px}.brand{font-size:18px}.trend{display:none}.page-hero h1{font-size:39px}.page-hero p{font-size:16px}.matrix-side{grid-template-columns:1fr}.feature-card img{height:230px}.feature-copy{padding:22px}.feature-copy h2{font-size:24px}.intro-grid h2{font-size:29px}.steps{grid-template-columns:1fr}.step{border-right:0!important}.form-row{grid-template-columns:1fr;gap:0}.contact-form{padding:22px}.footer-grid{grid-template-columns:1fr;gap:25px}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}}

/* roulang page: category4 */
:root{
      --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
      --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
      --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
      --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;width:100%;height:auto;object-fit:cover}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .topline{background:var(--surface);border-top:3px solid var(--brand);padding:15px 0}
    .brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
    .brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
    .utility{display:flex;align-items:center;gap:22px}
    .utility a:hover{color:var(--brand-dark)}
    .search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
    .search-mini input{width:150px;border:0;background:none;outline:0;color:var(--ink);font-size:13px;margin:0;padding:4px 0}
    .site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
    .nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
    .nav-row::-webkit-scrollbar{display:none}
    .nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
    .nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
    .nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
    .page-hero{background:#3e433d url('/assets/images/backpic/back-2.webp') center/cover no-repeat;color:#fff;position:relative;overflow:hidden}
    .page-hero:before{content:"";position:absolute;inset:0;background:rgba(28,33,28,.78)}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center;padding:82px 28px 88px}
    .crumb{font-size:13px;color:#d9cbbd;margin-bottom:24px}
    .crumb a{color:#f2dfcc}
    .eyebrow,.section-kicker{color:#be8a61;font-size:12px;letter-spacing:.18em;font-weight:800}
    h1{font-size:clamp(40px,5vw,68px);line-height:1.18;letter-spacing:-.05em;margin:16px 0 20px}
    .hero-copy p{max-width:650px;color:#eeeade;font-size:18px;line-height:1.95;margin-bottom:30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--brand);color:#fff}
    .btn-primary:hover{background:#c17c47;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
    .btn-light{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.08)}
    .btn-light:hover{background:#fff;color:var(--ink)}
    .btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}
    .btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .hero-image{border:8px solid rgba(255,255,255,.13);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
    .hero-image img{aspect-ratio:1.18;object-fit:cover}
    .section{padding:92px 0}
    .section.alt{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:42px}
    .section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.25;margin:9px 0 0;letter-spacing:-.04em}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .question-layout{display:grid;grid-template-columns:310px 1fr;gap:58px;align-items:start}
    .question-menu{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px}
    .question-menu a{display:flex;justify-content:space-between;gap:10px;padding:15px 16px;border-radius:8px;color:var(--muted);font-size:14px}
    .question-menu a:hover,.question-menu a.active{background:var(--soft);color:var(--brand-dark);font-weight:700}
    .question-menu em{font-style:normal;color:var(--brand)}
    .answer-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:34px 38px;box-shadow:var(--shadow)}
    .answer-panel h3{font-size:25px;margin:0 0 14px}
    .answer-panel p{color:var(--muted);margin:0 0 16px}
    .tags{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}
    .tag{display:inline-block;padding:4px 10px;background:var(--soft);border-radius:5px;color:var(--green);font-size:12px}
    .quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .quick-card{background:var(--surface);border:1px solid var(--line);padding:25px;border-radius:12px;transition:var(--ease)}
    .quick-card:hover{transform:translateY(-4px);border-color:#c99a75;box-shadow:var(--shadow)}
    .quick-card b{display:block;color:var(--brand);font-size:13px;margin-bottom:10px}
    .quick-card h3{font-size:19px;margin:0 0 8px}
    .quick-card p{color:var(--muted);font-size:14px;margin:0 0 13px}
    .quick-card a{color:var(--brand-dark);font-weight:700;font-size:13px}
    .search-block{background:var(--green);color:#fff;padding:38px;border-radius:var(--radius);display:grid;grid-template-columns:1fr 1fr;gap:35px;align-items:center}
    .search-block h2{font-size:30px;line-height:1.35;margin:0 0 10px}
    .search-block p{color:#e5e6dc;margin:0}
    .search-box{display:flex;background:var(--surface);border-radius:9px;padding:6px}
    .search-box input{border:0;margin:0;background:transparent;padding:12px 14px;outline:0}
    .search-box button{border:0;border-radius:7px;background:var(--brand);color:#fff;padding:0 19px}
    .timeline{border-left:2px solid #c99a75;margin-left:16px;padding-left:32px}
    .timeline-item{position:relative;padding:0 0 30px}
    .timeline-item:before{content:"";position:absolute;left:-41px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--brand);border:3px solid var(--paper)}
    .date{font-size:13px;color:var(--brand-dark);font-weight:800}
    .timeline-item h3{font-size:20px;margin:6px 0}
    .timeline-item p{color:var(--muted);margin:0;max-width:760px}
    .deep-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:center}
    .deep-grid img{border-radius:var(--radius);aspect-ratio:1.15}
    .reading-copy h2{font-size:34px;line-height:1.35;margin:10px 0 18px}
    .reading-copy p{color:var(--muted)}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
    .faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;padding:21px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}
    .faq-q span:last-child{color:var(--brand);font-size:22px}
    .faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}
    .faq-item.open .faq-a{display:block}
    .cta{background:#eadfce;padding:66px 0}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{font-size:34px;line-height:1.35;margin:8px 0}
    .cta p{color:var(--muted);margin:0}
    .footer{background:#252b27;color:#d9ddd3;padding:62px 0 20px}
    .footer .brand{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.1fr;gap:42px}
    .footer h3{color:#fff;font-size:15px;margin:3px 0 16px}
    .footer p{font-size:13px;color:#b9c1b8;line-height:1.8}
    .footer a:hover{color:#e1a36e}
    .footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;font-size:13px}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:20px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#aeb7ae;font-size:12px}
    :focus-visible{outline:3px solid rgba(178,109,56,.45);outline-offset:3px}
    @media(max-width:992px){.hero-grid,.deep-grid{grid-template-columns:1fr;gap:32px}.question-layout{grid-template-columns:240px 1fr}.footer-grid{grid-template-columns:1fr 1fr}.search-block{grid-template-columns:1fr}}
    @media(max-width:768px){.container{padding:0 20px}.utility{gap:10px}.trend{display:none}.search-mini input{width:105px}.menu-btn{display:block}.site-nav{display:block}.nav-row{display:none;flex-direction:column;align-items:stretch;padding-top:8px;padding-bottom:8px}.site-nav.open .nav-row{display:flex}.nav-link{padding:12px 10px}.nav-link:after{bottom:4px;left:10px;right:auto;width:35px}.hero-grid{padding:58px 20px 64px}.hero-copy p{font-size:16px}.section{padding:68px 0}.section-head,.cta-inner{display:block}.section-head p{margin-top:15px}.question-layout,.faq-layout{grid-template-columns:1fr;gap:28px}.quick-grid{grid-template-columns:1fr 1fr}.answer-panel{padding:26px}}
    @media(max-width:520px){.topline .container{padding:0 16px}.brand{font-size:17px}.search-mini{display:none}h1{font-size:40px}.hero-actions .btn{width:100%}.quick-grid{grid-template-columns:1fr}.search-block{padding:26px 20px}.search-box{display:block;background:transparent;padding:0}.search-box input{background:var(--surface);border-radius:7px;margin:14px 0;width:100%}.search-box button{height:46px;width:100%}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}}

/* roulang page: category5 */
:root{
      --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
      --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
      --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
      --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;width:100%;height:auto;object-fit:cover}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .topline{background:var(--surface);padding:14px 0;border-bottom:1px solid var(--line)}
    .brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
    .brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
    .utility{display:flex;align-items:center;gap:22px}
    .utility a:hover{color:var(--brand-dark)}
    .search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
    .search-mini input{width:125px;border:0;background:none;outline:0;color:var(--ink);font-size:13px;margin:0;padding:2px}
    .site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
    .nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
    .nav-row::-webkit-scrollbar{display:none}
    .nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
    .nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
    .nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
    .page-hero{padding:76px 0 84px;background:var(--soft)}
    .crumb{color:var(--muted);font-size:13px;margin-bottom:28px}
    .crumb a{color:var(--brand-dark)}
    .hero-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:58px;align-items:center}
    .eyebrow,.section-kicker{color:var(--brand);font-size:12px;letter-spacing:.16em;font-weight:800}
    h1,h2,h3{letter-spacing:-.035em;line-height:1.3}
    h1{font-size:clamp(40px,5vw,70px);margin:16px 0 22px}
    .hero-copy p{font-size:18px;color:var(--muted);max-width:600px;line-height:1.95}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--brand);color:#fff}
    .btn-primary:hover{background:#c17c47;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
    .btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}
    .btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .hero-media{position:relative;max-width:520px;margin-left:auto}
    .hero-media img{height:590px;border-radius:18px;object-fit:cover;box-shadow:var(--shadow)}
    .media-note{position:absolute;left:-26px;bottom:28px;background:var(--green);color:#fff;padding:18px 22px;border-radius:10px;max-width:230px;font-size:13px}
    .section{padding:94px 0}
    .section.alt{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:42px}
    .section-head h2{font-size:clamp(28px,4vw,45px);margin:9px 0 0}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .intro-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:70px}
    .reading-copy{max-width:740px;color:#555b55}
    .reading-copy p{margin:0 0 22px}
    .index-box{border-left:3px solid var(--brand);padding-left:22px}
    .index-box a{display:block;padding:10px 0;color:var(--muted);border-bottom:1px solid var(--line)}
    .index-box a:hover{color:var(--brand-dark);padding-left:6px}
    .topic-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
    .topic-main,.topic-side{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .topic-main img{height:350px}
    .topic-main .topic-body{padding:28px}
    .topic-main h3{font-size:28px;margin:10px 0}
    .topic-side{padding:25px}
    .topic-side article{padding:18px 0;border-bottom:1px solid var(--line)}
    .topic-side article:last-child{border:0}
    .topic-side h3{font-size:18px;margin:8px 0}
    .topic-side p,.meta{color:var(--muted);font-size:13px;margin:0}
    .tag{display:inline-block;padding:4px 10px;background:var(--soft);border-radius:5px;color:var(--green);font-size:12px}
    .feature-band{display:grid;grid-template-columns:.7fr 1.3fr;gap:56px;align-items:start}
    .feature-band img{height:370px;border-radius:14px}
    .feature-text h2{font-size:35px;margin:8px 0 18px}
    .feature-text p{color:var(--muted);margin:0 0 20px}
    .quote{border-left:3px solid var(--brand);padding:16px 20px;background:var(--surface);color:var(--brand-dark);margin:25px 0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
    .step{background:var(--surface);padding:27px 22px;min-height:190px}
    .step-no{color:var(--brand);font-size:13px;font-weight:800}
    .step h3{font-size:19px;margin:13px 0 8px}
    .step p{font-size:14px;color:var(--muted);margin:0}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .related-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:var(--ease)}
    .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c89a77}
    .related-card img{height:170px}
    .related-card div{padding:20px}
    .related-card h3{font-size:19px;margin:10px 0}
    .related-card p{color:var(--muted);font-size:14px;margin:0 0 15px}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;padding:21px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}
    .faq-q span:last-child{color:var(--brand);font-size:22px}
    .faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}
    .faq-item.open .faq-a{display:block}
    .cta{background:var(--green);color:#fff}
    .cta-layout{display:grid;grid-template-columns:1fr .8fr;gap:50px;align-items:center}
    .cta h2{font-size:42px;margin:10px 0 16px}
    .cta p{color:#e6e7dc;max-width:650px}
    .contact-form{background:var(--surface);color:var(--ink);padding:28px;border-radius:var(--radius)}
    label{font-size:13px;font-weight:700;display:block;margin-bottom:7px}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fffdf9;border-radius:7px;padding:12px 13px;margin-bottom:16px;outline:none}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(178,109,56,.14)}
    .footer{background:#252b27;color:#d8ddd4;padding:65px 0 25px}
    .footer .brand{color:#fff}
    .footer p{color:#aeb7ad;font-size:13px;line-height:1.8}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr .8fr 1.1fr;gap:42px;padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.14)}
    .footer h3{font-size:15px;color:#fff;margin:3px 0 15px}
    .footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}
    .footer a:hover{color:#e3a16e}
    .copyright{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;padding-top:22px;color:#98a39a;font-size:12px}
    .copyright a{color:#c7cec5}
    :focus-visible{outline:3px solid rgba(178,109,56,.45);outline-offset:3px}
    @media(max-width:992px){
      .hero-layout,.intro-grid,.feature-band,.cta-layout{grid-template-columns:1fr}
      .hero-media{margin:0;max-width:620px}
      .hero-media img{height:450px}
      .steps{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:768px){
      .container{padding:0 20px}
      .topline .container{align-items:flex-start}
      .utility{gap:10px}.trend{display:none}.search-mini input{width:100px}
      .menu-btn{display:block}
      .site-nav{display:none}.site-nav.open{display:block}
      .nav-row{display:flex;flex-direction:column;align-items:stretch;padding-top:8px;padding-bottom:8px}
      .nav-link{padding:11px 8px}
      .nav-link:after{left:8px;right:auto;width:32px;bottom:5px}
      .page-hero{padding:48px 0 58px}
      .hero-media img{height:390px}
      .media-note{left:14px}
      .section{padding:70px 0}
      .section-head{display:block;margin-bottom:30px}
      .section-head p{margin-top:15px}
      .topic-layout,.faq-layout{grid-template-columns:1fr;gap:20px}
      .related-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      body{font-size:15px}.brand{font-size:18px}
      h1{font-size:40px}.hero-copy p{font-size:16px}
      .hero-actions .btn{width:100%}
      .hero-media img{height:330px}
      .topic-main img,.feature-band img{height:250px}
      .steps,.related-grid,.footer-grid{grid-template-columns:1fr}
      .cta h2{font-size:32px}
      .footer-links{grid-template-columns:1fr 1fr}
    }

/* roulang page: category6 */
:root{
      --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
      --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
      --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
      --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;width:100%;height:auto;object-fit:cover}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .topline{background:var(--surface);padding:14px 0;border-bottom:1px solid var(--line)}
    .brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
    .brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
    .utility{display:flex;align-items:center;gap:22px}
    .utility a:hover{color:var(--brand-dark)}
    .search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
    .search-mini input{width:125px;border:0;background:none;outline:0;color:var(--ink);font-size:13px;margin:0;padding:3px 0}
    .trend{font-size:13px;color:var(--muted)}
    .menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
    .site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
    .nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
    .nav-row::-webkit-scrollbar{display:none}
    .nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
    .nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
    .nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .page-hero{background:#3e433d url('/assets/images/backpic/back-2.webp') center/cover no-repeat;position:relative;color:#fff;padding:72px 0 78px}
    .page-hero:before{content:"";position:absolute;inset:0;background:rgba(27,31,27,.76)}
    .page-hero .container{position:relative;z-index:1}
    .crumb{font-size:13px;color:#d8d5c9;margin-bottom:30px}
    .crumb a:hover{color:#fff}
    .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:end}
    .eyebrow,.section-kicker{color:#be8a61;font-size:12px;letter-spacing:.18em;font-weight:800}
    .page-hero h1{font-size:clamp(38px,5vw,64px);line-height:1.18;letter-spacing:-.05em;margin:15px 0 20px}
    .page-hero p{font-size:17px;color:#eeeade;max-width:650px;margin:0}
    .hero-image{border:1px solid rgba(255,255,255,.3);padding:10px;background:rgba(255,255,255,.08);border-radius:16px}
    .hero-image img{height:260px;border-radius:10px}
    .section{padding:88px 0}
    .section.alt{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
    .section-head h2{font-size:clamp(28px,4vw,45px);line-height:1.25;margin:9px 0 0;letter-spacing:-.04em}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .filter-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:28px}
    .filter-bar select,.filter-bar input{width:auto;min-width:160px;margin:0;background:#fffdf9;border-radius:7px;padding:10px 13px;border:1px solid var(--line)}
    .filter-title{font-weight:800;margin-right:8px}
    .filter-tag{border:1px solid var(--line);background:transparent;border-radius:7px;padding:9px 14px;color:var(--muted);transition:var(--ease)}
    .filter-tag:hover,.filter-tag.active{color:#fff;background:var(--green);border-color:var(--green)}
    .filter-clear{color:var(--brand-dark);font-size:13px;margin-left:auto}
    .content-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:24px}
    .feature-content{display:grid;grid-template-columns:.9fr 1.1fr;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .feature-content img{height:100%;min-height:330px}
    .feature-copy{padding:34px}
    .tag{display:inline-block;padding:4px 10px;background:var(--soft);border-radius:5px;color:var(--green);font-size:12px}
    .feature-copy h3{font-size:27px;line-height:1.4;margin:17px 0 12px}
    .feature-copy p,.content-card p,.deep-copy p,.timeline p{color:var(--muted);font-size:14px}
    .content-list{display:grid;gap:12px}
    .content-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:20px 22px;transition:var(--ease)}
    .content-card:hover{transform:translateY(-3px);border-color:#c9946d;box-shadow:var(--shadow)}
    .content-card h3{font-size:18px;margin:8px 0 4px}
    .meta{font-size:12px;color:var(--brand-dark)}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--brand);color:#fff}
    .btn-primary:hover{background:#c17c47;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
    .btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}
    .btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .section-visual{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center}
    .section-visual img{height:330px;border-radius:var(--radius)}
    .deep-copy{max-width:730px}
    .deep-copy h3{font-size:25px;margin:0 0 16px}
    .deep-copy p{font-size:16px;line-height:2;margin:0 0 17px}
    .index-list{border-left:2px solid var(--brand);padding-left:22px;display:grid;gap:15px;margin-top:25px}
    .index-list a{color:var(--green);font-weight:700}
    .index-list a:hover{color:var(--brand-dark);padding-left:5px}
    .status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .status{padding:23px 20px;background:var(--surface);border:1px solid var(--line);border-radius:12px}
    .status strong{font-size:26px;color:var(--brand-dark);display:block}
    .status span{font-size:13px;color:var(--muted)}
    .timeline{border-left:1px solid #c9c5ba;margin-left:20px;padding-left:30px;display:grid;gap:24px}
    .timeline-item{position:relative;background:var(--surface);border:1px solid var(--line);padding:22px 25px;border-radius:12px}
    .timeline-item:before{content:"";position:absolute;width:11px;height:11px;background:var(--brand);border:3px solid var(--paper);border-radius:50%;left:-37px;top:28px}
    .timeline h3{margin:8px 0 4px;font-size:19px}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .related-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
    .related-card img{height:145px}
    .related-card div{padding:18px}
    .related-card h3{font-size:18px;margin:5px 0}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;padding:22px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}
    .faq-q span:last-child{color:var(--brand);font-size:22px}
    .faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}
    .faq-item.open .faq-a{display:block}
    .cta{background:var(--green);color:#fff;padding:58px 0}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{font-size:32px;margin:0 0 8px}
    .cta p{color:#e0e4d9;margin:0;max-width:650px}
    .footer{background:#252a26;color:#cdd1c9;padding:62px 0 22px;font-size:13px}
    .footer .brand{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr .8fr 1fr;gap:42px}
    .footer h3{color:#fff;font-size:15px;margin:0 0 15px}
    .footer p{margin:0 0 9px;line-height:1.8}
    .footer a:hover{color:#e4a26d}
    .footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:#9da59c}
    :focus-visible{outline:3px solid rgba(178,109,56,.45);outline-offset:3px}
    @media(max-width:992px){.hero-grid,.content-layout,.section-visual{grid-template-columns:1fr}.feature-content{grid-template-columns:1fr}.feature-content img{height:260px}.status-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.section-head{display:block}.section-head p{margin-top:12px}}
    @media(max-width:768px){.container{padding:0 20px}.utility{gap:10px}.trend{display:none}.menu-btn{display:block}.site-nav{display:none}.site-nav.open{display:block}.nav-row{display:flex;flex-direction:column;align-items:stretch;padding-top:8px;padding-bottom:12px}.nav-link{padding:12px 13px}.nav-link:after{bottom:5px}.page-hero{padding:48px 0 54px}.page-hero h1{font-size:42px}.section{padding:65px 0}.cta-inner{display:block}.cta .btn{margin-top:25px}}
    @media(max-width:520px){.search-mini input{width:92px}.brand{font-size:17px}.hero-image img{height:190px}.filter-bar{align-items:stretch}.filter-bar select,.filter-bar input,.filter-tag{width:100%}.filter-clear{margin:0}.status-grid,.related-grid,.footer-grid{grid-template-columns:1fr}.feature-copy{padding:24px}.timeline{margin-left:9px;padding-left:22px}.timeline-item:before{left:-29px}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}}

/* roulang page: category7 */
:root{
      --ink:#262a27;--muted:#69706a;--paper:#f6f4ee;--surface:#fffdf8;
      --line:#deded5;--brand:#b26d38;--brand-dark:#814725;--green:#486856;
      --sand:#e8dfce;--soft:#f0ebe0;--danger:#a04432;--radius:16px;
      --shadow:0 14px 38px rgba(43,38,29,.09);--ease:all .22s ease
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.82}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--brand-dark)}
    img{display:block;width:100%;height:auto;object-fit:cover}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .topline{background:var(--surface);border-bottom:1px solid var(--line)}
    .topline .container{display:flex;align-items:center;justify-content:space-between;min-height:70px}
    .brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:.03em}
    .brand-mark{width:30px;height:30px;background:var(--brand);border-radius:9px 9px 3px 9px;display:grid;place-items:center;color:#fff;font-size:14px}
    .utility{display:flex;align-items:center;gap:22px}
    .search-mini{display:flex;align-items:center;border-bottom:1px solid var(--line);padding:3px 0}
    .search-mini input{width:125px;border:0;background:none;outline:0;color:var(--ink);font-size:13px;margin:0;padding:5px 0}
    .trend{font-size:13px;color:var(--muted)}
    .menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 12px;color:var(--ink)}
    .site-nav{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 16px rgba(40,34,25,.04)}
    .nav-row{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none}
    .nav-row::-webkit-scrollbar{display:none}
    .nav-link{position:relative;white-space:nowrap;padding:17px 13px;color:#59605a;font-size:14px}
    .nav-link:after{content:"";position:absolute;left:13px;right:13px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transition:var(--ease)}
    .nav-link:hover,.nav-link.active{color:var(--brand-dark);font-weight:700}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .inner-hero{position:relative;overflow:hidden;background:#3e433d;color:#fff;min-height:440px}
    .inner-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(27,31,27,.92),rgba(27,31,27,.48))}
    .inner-hero .container{position:relative;z-index:1;display:grid;grid-template-columns:1fr .82fr;gap:60px;align-items:center;min-height:440px}
    .hero-image{height:310px;border-radius:18px;border:1px solid rgba(255,255,255,.22);box-shadow:0 18px 40px rgba(0,0,0,.22)}
    .eyebrow,.section-kicker{color:#be8a61;font-size:12px;letter-spacing:.18em;font-weight:800}
    .breadcrumb{font-size:13px;color:#d9d8ce;margin-bottom:20px}
    .breadcrumb a{color:#e2b58f}
    h1,h2,h3{line-height:1.3;letter-spacing:-.035em}
    h1{font-size:clamp(38px,5vw,66px);margin:16px 0 18px}
    .inner-hero p{color:#eeeade;max-width:620px;font-size:17px}
    .hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid transparent;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:#c17c47;color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(178,109,56,.25)}
    .btn-outline{border-color:var(--line);color:var(--brand-dark);background:var(--surface)}.btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .btn-light{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.08)}.btn-light:hover{background:#fff;color:var(--ink)}
    .section{padding:92px 0}.section.alt{background:var(--soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:42px}
    .section-head h2{font-size:clamp(28px,4vw,44px);margin:8px 0 0}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .reading-layout{display:grid;grid-template-columns:260px minmax(0,760px);gap:70px;align-items:start}
    .toc{position:sticky;top:88px;border-left:2px solid var(--line);padding-left:20px}
    .toc h3{font-size:16px;margin:0 0 14px}
    .toc a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .toc a:hover{color:var(--brand-dark);padding-left:4px}
    .article-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:36px 42px;box-shadow:var(--shadow)}
    .article-panel h2{font-size:30px;margin:0 0 18px}
    .article-panel h3{font-size:21px;margin:34px 0 10px;color:var(--brand-dark)}
    .article-panel p{margin:0 0 18px;color:#505750}
    .article-panel ul{padding-left:22px;color:#505750}
    .article-panel li{margin:8px 0}
    .quote{margin:28px 0;padding:24px 26px;border-left:4px solid var(--brand);background:var(--soft);color:var(--green);font-weight:700}
    .summary-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}
    .summary-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
    .summary-card h3{font-size:22px;margin:0 0 13px}
    .summary-card p{color:var(--muted);margin:0}
    .number-list{counter-reset:item;padding:0;margin:0;list-style:none}
    .number-list li{counter-increment:item;display:grid;grid-template-columns:42px 1fr;gap:15px;padding:17px 0;border-bottom:1px solid var(--line)}
    .number-list li:before{content:counter(item,decimal-leading-zero);color:var(--brand);font-weight:800}
    .number-list strong{display:block;margin-bottom:3px}.number-list span{color:var(--muted);font-size:14px}
    .image-story{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:center}
    .image-story img{height:360px;border-radius:var(--radius)}
    .story-copy h2{font-size:36px;margin:10px 0 18px}.story-copy p{color:var(--muted)}
    .note-band{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
    .note-band div{background:var(--surface);padding:26px}.note-band strong{display:block;font-size:24px;color:var(--brand-dark);margin-bottom:5px}.note-band span{font-size:13px;color:var(--muted)}
    .related-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:24px}
    .related-main,.related-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .related-main img{height:235px}.related-main div{padding:24px}.related-main h3{font-size:24px;margin:8px 0}.related-main p,.related-list p{color:var(--muted);font-size:14px}
    .related-list{padding:8px 24px}.related-list a{display:block;padding:18px 0;border-bottom:1px solid var(--line)}.related-list a:last-child{border-bottom:0}.related-list strong{display:block}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;padding:21px 0;border:0;background:none;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700;color:var(--ink)}.faq-q span:last-child{color:var(--brand);font-size:22px}.faq-a{display:none;color:var(--muted);font-size:14px;padding:0 36px 20px 0}.faq-item.open .faq-a{display:block}
    .cta{background:var(--green);color:#fff;padding:70px 0}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}.cta h2{font-size:36px;margin:8px 0 12px}.cta p{color:#e7e9df;max-width:650px;margin:0}
    .footer{background:#292e2a;color:#d8d9d0;padding:65px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr .8fr 1.1fr;gap:42px}.footer .brand{color:#fff}.footer p{color:#abb1a9;font-size:13px;line-height:1.8}.footer h3{color:#fff;font-size:15px;margin:3px 0 15px}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:7px;font-size:13px}.footer a:hover{color:#e5a775}.copyright{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;border-top:1px solid #485048;margin-top:38px;padding-top:20px;color:#99a098;font-size:12px}
    :focus-visible{outline:3px solid rgba(178,109,56,.45);outline-offset:3px}
    @media(max-width:992px){.inner-hero .container{grid-template-columns:1fr .8fr;gap:28px}.reading-layout{gap:35px}.footer-grid{grid-template-columns:1fr 1fr}.image-story{gap:28px}}
    @media(max-width:768px){.topline .container{min-height:62px}.utility{gap:10px}.trend{display:none}.menu-btn{display:block}.site-nav{position:relative}.nav-row{display:none;flex-direction:column;align-items:stretch;padding:10px 28px 16px;overflow:visible}.site-nav.open .nav-row{display:flex}.nav-link{padding:12px 4px}.nav-link:after{left:0;right:auto;width:32px;bottom:4px}.inner-hero .container{display:flex;flex-direction:column;align-items:stretch;padding-top:55px;padding-bottom:55px}.hero-image{height:240px}.section{padding:68px 0}.section-head,.cta-inner{display:block}.section-head p{margin-top:16px}.reading-layout,.summary-grid,.image-story,.related-grid,.faq-layout{grid-template-columns:1fr}.toc{position:static;display:flex;gap:15px;overflow:auto;border-left:0;border-bottom:1px solid var(--line);padding:0 0 10px}.toc h3{display:none}.toc a{white-space:nowrap}.article-panel{padding:26px 22px}.note-band{grid-template-columns:1fr}.cta .btn{margin-top:25px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
    @media(max-width:520px){.container{padding:0 18px}.brand{font-size:17px}.search-mini input{width:90px}.inner-hero h1{font-size:39px}.hero-image{height:200px}.article-panel h2{font-size:25px}.story-copy h2,.cta h2{font-size:29px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:9px}.btn{width:100%}}