/* roulang page: index */
:root{
            --ink:#202326;--muted:#6e7478;--paper:#f7f6f2;--warm:#eceae4;
            --line:#dddcd6;--accent:#c7643d;--accent-dark:#9e452c;--night:#202426;
            --white:#fff;--radius:18px;--shadow:0 16px 45px rgba(30,34,35,.09);
        }
        *,*:before,*:after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.8}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{display:block;max-width:100%;height:auto}
        button,input,select,textarea{font:inherit}
        :focus-visible{outline:3px solid rgba(199,100,61,.35);outline-offset:3px}
        .container{max-width:1240px;padding-left:22px;padding-right:22px}
        .topbar{background:var(--night);color:#e9e8e2;font-size:13px;padding:8px 0}
        .topbar-inner{display:flex;justify-content:space-between;gap:18px}
        .site-header{position:sticky;top:0;z-index:1030;background:rgba(247,246,242,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
        .main-nav{min-height:74px;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:265px;font-weight:800;letter-spacing:-.03em}
        .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--accent);position:relative}
        .brand-mark:after{content:"";position:absolute;left:8px;right:8px;top:15px;height:4px;background:#fff;box-shadow:7px -7px 0 -1px #fff}
        .brand strong{font-size:18px;display:block}
        .brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.04em}
        .nav-links{display:flex;align-items:center;gap:5px;margin:0;padding:0;list-style:none}
        .nav-links a{display:block;padding:10px 13px;border-radius:9px;font-size:14px;color:#4c5154}
        .nav-links a:hover,.nav-links a.active{background:#eee8e1;color:var(--accent-dark)}
        .nav-cta,.btn-accent{background:var(--accent);color:#fff!important;border:1px solid var(--accent);border-radius:9px;padding:11px 18px;font-weight:700}
        .nav-cta:hover,.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-2px)}
        .subnav{border-top:1px solid #e5e3de;background:#eeece7}
        .subnav-inner{display:flex;align-items:center;gap:8px;min-height:43px}
        .subnav a{font-size:12px;color:#777b7c;padding:7px 13px;border-left:1px solid transparent}
        .subnav a:hover,.subnav a.active{color:var(--accent-dark);border-left-color:var(--accent)}
        .navbar-toggler{border:1px solid var(--line);padding:8px 11px}
        .hero{min-height:650px;position:relative;color:#fff;background:#292d2e}
        .hero-slide{min-height:650px;background-size:cover;background-position:center;position:relative}
        .hero-slide:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(25,28,28,.86) 0%,rgba(25,28,28,.55) 48%,rgba(25,28,28,.13) 100%)}
        .hero-content{position:relative;z-index:1;padding:116px 0 105px;max-width:720px}
        .eyebrow,.section-kicker{color:var(--accent);font-size:12px;letter-spacing:.14em;font-weight:800;text-transform:uppercase}
        .hero h1{font-size:clamp(38px,5vw,68px);line-height:1.2;letter-spacing:-.05em;margin:18px 0 23px}
        .hero p{font-size:17px;line-height:1.9;color:#edece8;max-width:700px;margin-bottom:30px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .btn-outline-light{border-radius:9px;padding:11px 18px}
        .hero-meta{display:flex;gap:30px;margin-top:62px;border-top:1px solid rgba(255,255,255,.25);padding-top:20px}
        .hero-meta b{font-size:25px;display:block;color:#fff}.hero-meta span{font-size:12px;color:#d1d0c9}
        .carousel-indicators [data-bs-target]{width:28px;height:4px;border:0;border-radius:4px}
        .section{padding:104px 0}
        .section-head{max-width:760px;margin-bottom:43px}.section-head h2{font-size:clamp(28px,3.5vw,44px);line-height:1.3;letter-spacing:-.04em;margin:12px 0 15px}
        .section-head p{color:var(--muted);margin:0;font-size:16px}
        .intro-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
        .intro-copy h2{font-size:39px;line-height:1.3;margin:13px 0 20px}
        .intro-copy p{color:var(--muted)}
        .check-list{list-style:none;padding:0;margin:25px 0 0}.check-list li{padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}.check-list li:before{content:"✓";color:var(--accent);font-weight:bold;margin-right:12px}
        .screen{background:#d9d7d0;padding:14px;border-radius:18px;box-shadow:var(--shadow);transform:rotate(1deg)}
        .screen img{border-radius:10px;width:100%}
        .process-band{background:var(--warm);padding:80px 0}
        .process{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}.process:before{content:"";position:absolute;top:24px;left:8%;right:8%;height:1px;background:#c7c4bc}
        .step{position:relative;text-align:center;padding:0 12px}.step-no{width:49px;height:49px;border-radius:50%;background:var(--paper);border:1px solid var(--accent);color:var(--accent);display:grid;place-items:center;margin:0 auto 18px;font-weight:800;position:relative;z-index:1}.step h3{font-size:17px;margin:0 0 8px}.step p{font-size:13px;color:var(--muted);margin:0}
        .feature-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:18px}.feature-card{background:#fff;border:1px solid var(--line);padding:28px;border-radius:var(--radius);min-height:205px;transition:.25s}.feature-card:first-child{grid-row:span 2;background:var(--night);color:#fff}.feature-card:hover,.product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#d6a18e}.feature-index{color:var(--accent);font-weight:800;font-size:13px}.feature-card h3{font-size:20px;margin:18px 0 10px}.feature-card p{font-size:14px;color:var(--muted);margin:0}.feature-card:first-child p{color:#c9cbc8}
        .scene-wrap{display:grid;grid-template-columns:260px 1fr;gap:42px}.scene-nav{border-left:2px solid var(--line)}.scene-nav a{display:block;padding:12px 20px;color:var(--muted);font-size:14px}.scene-nav a:hover,.scene-nav a.active{color:var(--accent-dark);border-left:2px solid var(--accent);margin-left:-2px;background:#eee8e1}.scene-panel{display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:center}.scene-panel img{height:270px;width:100%;object-fit:cover;border-radius:14px}.scene-panel h3{font-size:28px}.scene-panel p{color:var(--muted)}
        .stage{background:var(--night);color:#fff;padding:92px 0}.stage .section-head p{color:#b9bdb8}.stage-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:35px;align-items:center}.dashboard{background:#373c3c;border:1px solid #59605d;padding:18px;border-radius:16px}.dashboard img{border-radius:9px}.data-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.data-pills span,.tag{border:1px solid #777c78;border-radius:30px;padding:5px 12px;font-size:12px;color:#d9dad3}
        .products{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}.product-card img{height:190px;width:100%;object-fit:cover}.product-body{padding:24px}.product-body h3{font-size:21px}.product-body p{font-size:14px;color:var(--muted);min-height:76px}.product-body .tag{color:var(--accent-dark);border-color:#e5c1b2;margin:2px}
        .case-strip{background:#282d2d;color:#fff;padding:82px 0}.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.case-grid h2{font-size:40px;line-height:1.3}.case-grid p{color:#c4c7c2}.case-box{border:1px solid #5c615d;padding:28px;border-radius:14px}.case-box strong{display:block;color:#e7a087;font-size:18px;margin-bottom:8px}.case-box span{font-size:14px;color:#c4c7c2}
        .pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.price-card{border:1px solid var(--line);background:#fff;padding:30px;border-radius:var(--radius)}.price-card.featured{border:2px solid var(--accent);position:relative}.price-card.featured:before{content:"适合协作团队";position:absolute;right:20px;top:-14px;background:var(--accent);color:#fff;padding:4px 12px;border-radius:20px;font-size:12px}.price-card h3{font-size:22px}.price-card .price{font-size:19px;color:var(--accent-dark);font-weight:800;margin:22px 0}.price-card ul{padding-left:18px;color:var(--muted);font-size:14px;line-height:2.2}
        .stats{background:var(--accent);color:#fff;padding:38px 0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);text-align:center}.stat{border-right:1px solid rgba(255,255,255,.3)}.stat:last-child{border:0}.stat b{font-size:32px;display:block}.stat span{font-size:13px}
        .quotes{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}.quote{background:#fff;padding:27px;border:1px solid var(--line);border-radius:14px}.quote.big{background:#eee8e1}.quote p{font-size:17px;margin:0 0 22px;line-height:1.8}.quote small{color:var(--muted)}
        .stories{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.story{border-top:3px solid var(--accent);padding:20px 4px}.story b{font-size:16px}.story p{color:var(--muted);font-size:14px}
        .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:40px}.news-list{border-top:1px solid var(--line)}.news-item{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}.news-item a:hover{color:var(--accent-dark)}.news-item span{font-size:12px;color:var(--muted);white-space:nowrap}.news-side{background:var(--night);color:#fff;padding:30px;border-radius:16px}.news-side p{color:#c4c7c2;font-size:14px}
        .faq .accordion-item{background:#fff;border:1px solid var(--line);margin-bottom:10px;border-radius:10px;overflow:hidden}.faq .accordion-button{background:#fff;color:var(--ink);font-weight:700;padding:20px}.faq .accordion-button:not(.collapsed){background:#eee8e1;color:var(--accent-dark);box-shadow:none}.faq .accordion-body{color:var(--muted);font-size:14px;padding:0 20px 20px}
        .closing{background:#e9e1d9;padding:86px 0}.closing-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:start}.closing h2{font-size:40px;line-height:1.35}.closing p{color:var(--muted)}.lead-form{background:#fff;padding:28px;border-radius:16px;box-shadow:var(--shadow)}.form-label{font-size:13px;font-weight:700}.form-control,.form-select{border:1px solid var(--line);border-radius:8px;padding:12px}.form-control:focus,.form-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,100,61,.12)}
        footer{background:var(--night);color:#e8e7df;padding:62px 0 25px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}.footer-brand p,.footer-col a,.footer-col span{color:#aeb3af;font-size:13px;display:block;margin:7px 0}.footer-col h4{font-size:14px;color:#fff;margin-bottom:15px}.footer-col a:hover{color:#e6a087}.copyright{border-top:1px solid #454a47;margin-top:45px;padding-top:20px;color:#8e9490;font-size:12px;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:991px){.brand{min-width:auto}.nav-links{gap:0}.nav-links a{padding:9px 8px}.intro-grid,.stage-grid,.case-grid,.closing-grid{grid-template-columns:1fr;gap:35px}.feature-grid{grid-template-columns:1fr 1fr}.feature-card:first-child{grid-row:auto}.scene-wrap{grid-template-columns:1fr}.scene-nav{display:flex;overflow:auto;border-left:0;border-bottom:2px solid var(--line)}.scene-nav a{white-space:nowrap}.process{grid-template-columns:repeat(5,1fr)}}
        @media(max-width:767px){.topbar{display:none}.site-header{position:relative}.main-nav{min-height:68px;gap:12px}.brand strong{font-size:15px}.brand small{font-size:9px}.nav-cta{display:none}.navbar-collapse{padding:10px 0 15px}.nav-links{display:block}.nav-links a{padding:10px 4px}.subnav{display:none}.hero,.hero-slide{min-height:610px}.hero-content{padding:85px 0 60px}.hero h1{font-size:39px}.hero p{font-size:15px}.hero-meta{gap:18px;margin-top:42px}.hero-meta b{font-size:21px}.section{padding:70px 0}.section-head h2,.intro-copy h2,.case-grid h2,.closing h2{font-size:31px}.feature-grid,.products,.pricing,.quotes,.stories,.news-layout{grid-template-columns:1fr}.feature-card{min-height:0}.scene-panel{grid-template-columns:1fr}.scene-panel img{height:210px}.process{display:block}.process:before{top:0;bottom:0;left:24px;width:1px;height:auto;right:auto}.step{text-align:left;display:grid;grid-template-columns:50px 1fr;column-gap:17px;margin-bottom:26px;padding:0}.step-no{margin:0;grid-row:span 2}.step h3{margin:4px 0 4px}.stats-grid{grid-template-columns:1fr 1fr;gap:24px}.stat{border:0}.copyright,.topbar-inner{display:block}.copyright span{display:block;margin-top:8px}}
        @media(max-width:390px){.container{padding-left:16px;padding-right:16px}.hero h1{font-size:34px}.hero-actions .btn{width:100%}.hero-meta{gap:12px}.hero-meta span{font-size:11px}}

/* roulang page: category2 */
:root{
      --ink:#202326;
      --muted:#6e7478;
      --paper:#f7f6f2;
      --warm:#eceae4;
      --line:#dddcd6;
      --accent:#c7643d;
      --accent-dark:#9e452c;
      --night:#202426;
      --white:#fff;
      --soft:#f0eee9;
      --radius:18px;
      --shadow:0 16px 45px rgba(30,34,35,.09);
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:hover{color:var(--accent-dark)}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(199,100,61,.32);outline-offset:3px}
    .container{max-width:1240px;padding-left:22px;padding-right:22px}
    .topbar{background:var(--night);color:#e9e8e2;font-size:13px;padding:8px 0}
    .topbar-inner{display:flex;justify-content:space-between;gap:18px}
    .site-header{position:sticky;top:0;z-index:1030;background:rgba(247,246,242,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .main-nav{min-height:74px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:290px;font-weight:800;letter-spacing:-.03em}
    .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--accent);position:relative;flex:0 0 auto}
    .brand-mark:after{content:"";position:absolute;left:8px;right:8px;top:15px;height:4px;background:#fff;box-shadow:7px -7px 0 -1px #fff}
    .brand strong{font-size:17px;display:block}
    .brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.04em}
    .nav-links{display:flex;align-items:center;gap:5px;margin:0;padding:0;list-style:none}
    .nav-links a{display:block;padding:10px 13px;border-radius:9px;font-size:14px;color:#4c5154}
    .nav-links a:hover,.nav-links a.active{background:#eee8e1;color:var(--accent-dark)}
    .nav-cta,.btn-accent{background:var(--accent);color:#fff!important;border:1px solid var(--accent);border-radius:9px;padding:11px 18px;font-weight:700}
    .nav-cta:hover,.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-2px)}
    .subnav{border-top:1px solid #e5e3de;background:#eeece7}
    .subnav-inner{display:flex;align-items:center;gap:8px;min-height:43px;overflow:auto;white-space:nowrap}
    .subnav a{font-size:12px;color:#777b7c;padding:7px 13px;border-left:1px solid transparent}
    .subnav a:hover,.subnav a.active{color:var(--accent-dark);border-left-color:var(--accent)}
    .navbar-toggler{border:1px solid var(--line);padding:8px 11px}
    .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(199,100,61,.18)}
    .navbar-toggler-icon{background-image:linear-gradient(var(--accent),var(--accent)),linear-gradient(var(--accent),var(--accent)),linear-gradient(var(--accent),var(--accent));background-size:100% 2px,100% 2px,100% 2px;background-position:top,center,bottom;background-repeat:no-repeat}
    .eyebrow,.section-kicker{color:var(--accent);font-size:12px;letter-spacing:.14em;font-weight:800}
    .page-banner{position:relative;min-height:405px;background:url('/assets/images/backpic/back-4.webp') center/cover;color:#fff;display:flex;align-items:center}
    .page-banner:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(25,28,28,.9),rgba(25,28,28,.55) 58%,rgba(25,28,28,.2))}
    .banner-content{position:relative;z-index:1;max-width:760px;padding:78px 0}
    .banner-content h1{font-size:clamp(36px,5vw,62px);line-height:1.22;letter-spacing:-.05em;margin:16px 0 20px}
    .banner-content p{font-size:17px;line-height:1.9;color:#ebeae5;margin:0;max-width:700px}
    .banner-note{display:inline-flex;gap:10px;align-items:center;border:1px solid rgba(255,255,255,.3);padding:7px 13px;border-radius:30px;font-size:12px;color:#e4e2db}
    .section{padding:92px 0}
    .section-head{max-width:780px;margin-bottom:40px}
    .section-head h2{font-size:clamp(28px,3.5vw,44px);line-height:1.3;letter-spacing:-.04em;margin:12px 0 14px}
    .section-head p{color:var(--muted);font-size:16px;margin:0}
    .scene-index{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0}
    .scene-index a{padding:14px 12px;border-left:3px solid transparent;color:var(--muted);font-size:14px;background:transparent}
    .scene-index a:hover,.scene-index a.active{background:#eee8e1;color:var(--accent-dark);border-left-color:var(--accent)}
    .scene-index b{display:block;color:var(--accent);font-size:12px;margin-bottom:5px}
    .scene-list{display:flex;flex-direction:column;gap:18px}
    .scene-row{display:grid;grid-template-columns:210px 1fr 270px;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);padding:22px;border-radius:14px;transition:.25s}
    .scene-row:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d6a18e}
    .scene-row img{width:210px;height:145px;object-fit:cover;border-radius:10px}
    .scene-row h3{font-size:22px;margin:0 0 8px}
    .scene-row p{font-size:14px;color:var(--muted);margin:0}
    .scene-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:13px}
    .tag{display:inline-block;border:1px solid #e5c1b2;color:var(--accent-dark);border-radius:30px;padding:3px 10px;font-size:12px}
    .scene-output{border-left:1px solid var(--line);padding-left:24px}
    .scene-output strong{font-size:13px;color:var(--ink)}
    .scene-output ul{margin:8px 0 0;padding-left:18px;color:var(--muted);font-size:13px}
    .task-band{background:var(--warm)}
    .task-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:70px;align-items:start}
    .task-intro h2{font-size:40px;line-height:1.3;margin:12px 0 16px}
    .task-intro p{color:var(--muted)}
    .task-flow{border-top:1px solid #cfcac1}
    .task-step{display:grid;grid-template-columns:62px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid #cfcac1}
    .task-num{font-size:25px;font-weight:800;color:var(--accent)}
    .task-step h3{font-size:18px;margin:0 0 5px}
    .task-step p{font-size:14px;color:var(--muted);margin:0}
    .compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compare-card{padding:32px;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
    .compare-card.after{background:var(--night);color:#fff;border-color:var(--night)}
    .compare-card h3{font-size:22px;margin:0 0 20px}
    .compare-card ul{margin:0;padding-left:20px;font-size:14px}
    .compare-card li{padding:7px 0}
    .compare-card.after li::marker{color:var(--accent)}
    .demo-band{background:var(--night);color:#fff;padding:92px 0}
    .demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
    .demo-grid h2{font-size:40px;line-height:1.3;margin:12px 0 17px}
    .demo-grid p{color:#c4c7c2}
    .dashboard{position:relative}
    .dashboard img{width:100%;border-radius:12px;border:1px solid #515654}
    .dashboard-label{position:absolute;left:20px;bottom:20px;background:rgba(32,36,38,.9);border-left:3px solid var(--accent);padding:10px 14px;font-size:12px;color:#eee}
    .faq-list .accordion-item{background:#fff;border:1px solid var(--line);margin-bottom:10px;border-radius:12px;overflow:hidden}
    .faq-list .accordion-button{background:#fff;color:var(--ink);font-weight:700;padding:20px 22px;box-shadow:none}
    .faq-list .accordion-button:not(.collapsed){color:var(--accent-dark);background:#f3eee9}
    .faq-list .accordion-button::after{filter:sepia(1) saturate(4)}
    .faq-list .accordion-body{padding:0 22px 21px;color:var(--muted);font-size:14px}
    .cta{background:#e8d6cb;padding:75px 0}
    .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
    .cta h2{font-size:40px;line-height:1.3;margin:12px 0}
    .cta p{color:#64605b}
    .contact-form{background:#fff;padding:28px;border-radius:var(--radius);box-shadow:var(--shadow)}
    .contact-form label{font-size:13px;font-weight:700;margin-bottom:6px}
    .contact-form .form-control,.contact-form .form-select{border:1px solid var(--line);border-radius:8px;padding:11px 13px;background:#fbfaf8}
    .contact-form .form-control:focus,.contact-form .form-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,100,61,.12)}
    footer{background:var(--night);color:#e9e8e2;padding:62px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}
    .footer-brand p{color:#adb2ad;font-size:14px;max-width:290px;margin-top:18px}
    footer .brand strong{color:#fff;font-size:16px}
    footer .brand small{color:#aeb2ae}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h4{font-size:14px;color:#fff;margin:0 0 10px}
    .footer-col a,.footer-col span{font-size:13px;color:#adb2ad}
    .footer-col a:hover{color:#fff}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #454a48;margin-top:45px;padding-top:18px;color:#8f9690;font-size:12px}
    @media(max-width:1024px){
      .brand{min-width:250px}.nav-links a{padding:9px 8px}
      .scene-index{grid-template-columns:repeat(3,1fr)}
      .scene-row{grid-template-columns:170px 1fr}.scene-row img{width:170px;height:125px}.scene-output{grid-column:2;border-left:0;padding-left:0}
      .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
      .footer-grid .footer-col:last-child{grid-column:2 / 4}
    }
    @media(max-width:767px){
      .topbar-inner{display:block;text-align:center;font-size:12px}.topbar-inner span{display:block}
      .main-nav{min-height:68px}.brand{min-width:0}.brand strong{font-size:15px}.brand small{font-size:10px}
      .navbar-collapse{padding:15px 0 8px}.nav-links{display:block}.nav-links a{padding:12px 10px}
      .nav-cta{display:inline-block;margin-top:8px}
      .subnav-inner{min-height:39px}
      .page-banner{min-height:390px}.banner-content{padding:70px 0}.banner-content h1{font-size:38px}
      .section,.demo-band{padding:68px 0}.section-head{margin-bottom:28px}
      .scene-index{grid-template-columns:repeat(2,1fr);gap:7px}
      .scene-row{display:block;padding:16px}.scene-row img{width:100%;height:190px;margin-bottom:18px}.scene-output{margin-top:18px;padding:15px 0 0;border-top:1px solid var(--line)}
      .task-grid,.demo-grid,.cta-grid,.compare{grid-template-columns:1fr;gap:28px}
      .task-intro h2,.demo-grid h2,.cta h2{font-size:31px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid .footer-col:last-child{grid-column:1 / 3}
      .copyright{display:block}.copyright span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      .container{padding-left:17px;padding-right:17px}
      .scene-index{grid-template-columns:1fr 1fr}.scene-index a{font-size:13px}
      .footer-grid{grid-template-columns:1fr}.footer-grid .footer-col:last-child{grid-column:auto}
      .contact-form{padding:20px}
    }

/* roulang page: category1 */
:root{
      --ink:#202326;
      --muted:#6e7478;
      --paper:#f7f6f2;
      --warm:#eceae4;
      --line:#dddcd6;
      --accent:#c7643d;
      --accent-dark:#9e452c;
      --night:#202426;
      --white:#fff;
      --radius:18px;
      --shadow:0 16px 45px rgba(30,34,35,.09);
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input,select,textarea{font:inherit}
    .container{max-width:1240px;padding-left:22px;padding-right:22px}
    .topbar{background:var(--night);color:#e9e8e2;font-size:13px;padding:8px 0}
    .topbar-inner{display:flex;justify-content:space-between;gap:18px}
    .site-header{position:sticky;top:0;z-index:1030;background:rgba(247,246,242,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .main-nav{min-height:74px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:265px;font-weight:800;letter-spacing:-.03em}
    .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--accent);position:relative;flex:0 0 auto}
    .brand-mark:after{content:"";position:absolute;left:8px;right:8px;top:15px;height:4px;background:#fff;box-shadow:7px -7px 0 -1px #fff}
    .brand strong{font-size:18px;display:block}
    .brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.04em}
    .nav-links{display:flex;align-items:center;gap:5px;margin:0;padding:0;list-style:none}
    .nav-links a{display:block;padding:10px 13px;border-radius:9px;font-size:14px;color:#4c5154}
    .nav-links a:hover,.nav-links a.active{background:#eee8e1;color:var(--accent-dark)}
    .nav-cta,.btn-accent{background:var(--accent);color:#fff!important;border:1px solid var(--accent);border-radius:9px;padding:11px 18px;font-weight:700;display:inline-block}
    .nav-cta:hover,.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-2px)}
    .subnav{border-top:1px solid #e5e3de;background:#eeece7}
    .subnav-inner{display:flex;align-items:center;gap:8px;min-height:43px;overflow-x:auto;white-space:nowrap}
    .subnav a{font-size:12px;color:#777b7c;padding:7px 13px;border-left:1px solid transparent}
    .subnav a:hover,.subnav a.active{color:var(--accent-dark);border-left-color:var(--accent)}
    .navbar-toggler{border:1px solid var(--line);padding:8px 11px}
    .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(199,100,61,.18)}
    .page-banner{background:var(--night);color:#fff;position:relative;overflow:hidden}
    .page-banner:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(26,29,29,.94),rgba(26,29,29,.58),rgba(26,29,29,.25))}
    .banner-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.72}
    .banner-content{position:relative;z-index:1;min-height:435px;display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center;padding-top:54px;padding-bottom:54px}
    .eyebrow,.section-kicker{color:var(--accent);font-size:12px;letter-spacing:.14em;font-weight:800}
    .page-banner h1{font-size:clamp(36px,5vw,62px);line-height:1.25;letter-spacing:-.05em;margin:16px 0 20px}
    .page-banner p{max-width:680px;color:#e7e6e0;font-size:16px;margin:0 0 28px}
    .banner-panel{background:rgba(32,36,38,.76);border:1px solid rgba(255,255,255,.2);padding:25px;border-radius:14px;backdrop-filter:blur(8px)}
    .banner-panel h2{font-size:19px;margin:0 0 17px}
    .time-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    .time-list span{border:1px solid rgba(255,255,255,.25);padding:9px 12px;border-radius:8px;color:#deded8;font-size:13px}
    .time-list span.active{border-color:var(--accent);background:rgba(199,100,61,.2);color:#fff}
    .section{padding:92px 0}
    .section-head{max-width:780px;margin-bottom:40px}
    .section-head h2{font-size:clamp(28px,3.5vw,44px);line-height:1.3;letter-spacing:-.04em;margin:12px 0 15px}
    .section-head p{color:var(--muted);margin:0;font-size:16px}
    .feature-index{display:flex;flex-wrap:wrap;gap:10px;border-bottom:1px solid var(--line);padding-bottom:25px}
    .feature-index a{background:#fff;border:1px solid var(--line);border-radius:30px;padding:10px 17px;color:#5f6466;font-size:14px}
    .feature-index a:hover,.feature-index a.active{border-color:var(--accent);color:var(--accent-dark);background:#f5e8e1}
    .feature-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}
    .side-note{border-left:3px solid var(--accent);padding:4px 0 5px 22px;color:var(--muted);font-size:15px}
    .capability-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .capability-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;min-height:190px;transition:.25s}
    .capability-card:hover{transform:translateY(-4px);border-color:#d6a18e;box-shadow:var(--shadow)}
    .capability-card .num{color:var(--accent);font-weight:800;font-size:13px}
    .capability-card h3{font-size:20px;margin:12px 0 8px}
    .capability-card p{color:var(--muted);font-size:14px;margin:0}
    .detail-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-top:50px}
    .detail-row.reverse .detail-copy{order:2}
    .detail-copy h3{font-size:29px;line-height:1.35;margin:12px 0}
    .detail-copy p{color:var(--muted);font-size:15px}
    .detail-image{position:relative}
    .detail-image img{width:100%;height:285px;object-fit:cover;border-radius:14px}
    .image-label{position:absolute;left:18px;bottom:18px;background:var(--night);color:#fff;padding:6px 12px;border-radius:7px;font-size:12px}
    .field-list{list-style:none;padding:0;margin:20px 0 0}
    .field-list li{padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
    .field-list li:before{content:"✓";color:var(--accent);font-weight:bold;margin-right:10px}
    .process-section{background:var(--warm)}
    .process-track{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
    .process-track:before{content:"";position:absolute;top:21px;left:8%;right:8%;height:1px;background:#c9c5bc}
    .process-step{position:relative;z-index:1;padding-right:20px}
    .process-dot{width:43px;height:43px;border-radius:50%;background:var(--paper);border:1px solid var(--accent);color:var(--accent-dark);display:grid;place-items:center;font-weight:800;margin-bottom:20px}
    .process-step h3{font-size:17px;margin:0 0 7px}
    .process-step p{font-size:13px;color:var(--muted);margin:0}
    .tech-panel{background:var(--night);color:#fff;padding:70px 0}
    .tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
    .tech-panel h2{font-size:38px;line-height:1.35;margin:12px 0 17px}
    .tech-panel p{color:#c5c8c2}
    .tech-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}
    .tech-tags span{border:1px solid #666d69;border-radius:30px;padding:6px 13px;color:#d8dad3;font-size:13px}
    .tech-list{border-top:1px solid #59605c}
    .tech-list div{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid #59605c;padding:15px 0;font-size:14px}
    .tech-list b{color:#fff;font-weight:600}
    .tech-list span{color:#bfc2bc;text-align:right}
    .faq-wrap{max-width:900px}
    .accordion-item{border:1px solid var(--line)!important;border-radius:11px!important;overflow:hidden;margin-bottom:11px;background:#fff}
    .accordion-button{background:#fff;color:var(--ink);font-weight:700;padding:18px 21px;box-shadow:none!important}
    .accordion-button:not(.collapsed){background:#f4e9e3;color:var(--accent-dark)}
    .accordion-button:focus{box-shadow:0 0 0 3px rgba(199,100,61,.16)!important}
    .accordion-body{color:var(--muted);font-size:14px;padding:0 21px 20px}
    .cta-section{padding:78px 0;background:#f0e2db}
    .cta-box{display:grid;grid-template-columns:1fr .92fr;gap:55px;align-items:center}
    .cta-box h2{font-size:38px;line-height:1.35;margin:12px 0 15px}
    .cta-box p{color:var(--muted)}
    .contact-form{background:#fff;border:1px solid #e2cfc4;border-radius:14px;padding:25px;box-shadow:var(--shadow)}
    .form-label{font-size:13px;font-weight:700;margin-bottom:5px}
    .form-control,.form-select{border:1px solid var(--line);border-radius:8px;padding:11px 13px;background:#fbfaf7}
    .form-control:focus,.form-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,100,61,.15)}
    footer{background:var(--night);color:#e7e7e0;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:35px}
    .footer-brand p{color:#afb3ae;font-size:14px;max-width:300px;margin-top:18px}
    footer .brand strong{color:#fff}
    footer .brand small{color:#aeb2ad}
    .footer-col h4{font-size:15px;margin:4px 0 17px;color:#fff}
    .footer-col a,.footer-col span{display:block;color:#aeb3ae;font-size:13px;margin:8px 0}
    .footer-col a:hover{color:#fff}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #464b49;margin-top:38px;padding-top:18px;color:#929894;font-size:12px}
    @media(max-width:991px){
      .topbar-inner{flex-direction:column;gap:0}
      .main-nav{min-height:68px}
      .navbar-collapse{padding:16px 0}
      .nav-links{flex-direction:column;align-items:stretch}
      .nav-links a{padding:12px 14px}
      .nav-cta{margin-top:10px;text-align:center}
      .banner-content,.tech-grid,.cta-box{grid-template-columns:1fr;gap:30px}
      .banner-content{padding-top:55px;padding-bottom:55px}
      .process-track{grid-template-columns:repeat(3,1fr);gap:28px}
      .process-track:before{display:none}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:767px){
      .container{padding-left:17px;padding-right:17px}
      .section{padding:66px 0}
      .page-banner h1{font-size:38px}
      .feature-layout,.detail-row{grid-template-columns:1fr;gap:30px}
      .detail-row.reverse .detail-copy{order:0}
      .capability-list{grid-template-columns:1fr}
      .process-track{grid-template-columns:1fr;gap:22px}
      .process-step{display:grid;grid-template-columns:48px 1fr;column-gap:14px;padding:0}
      .process-dot{grid-row:span 2;margin:0}
      .process-step p{padding-bottom:4px}
      .tech-panel h2,.cta-box h2{font-size:30px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{flex-direction:column;gap:5px}
    }
    @media(max-width:520px){
      .topbar{font-size:11px}
      .brand{min-width:0}
      .brand strong{font-size:15px}
      .brand small{font-size:10px}
      .time-list{grid-template-columns:1fr}
      .banner-panel{padding:19px}
    }

/* roulang page: category3 */
:root{
 --ink:#202326;--muted:#6e7478;--paper:#f7f6f2;--warm:#eceae4;
 --line:#dddcd6;--accent:#c7643d;--accent-dark:#9e452c;--night:#202426;
 --white:#fff;--radius:18px;--shadow:0 16px 45px rgba(30,34,35,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.8;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{display:block;max-width:100%;height:auto}
button,input,textarea{font:inherit}
.container{max-width:1240px;padding-left:22px;padding-right:22px}
.topbar{background:var(--night);color:#e9e8e2;font-size:13px;padding:8px 0}
.topbar-inner{display:flex;justify-content:space-between;gap:18px}
.site-header{position:sticky;top:0;z-index:1030;background:rgba(247,246,242,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.main-nav{min-height:74px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:265px;font-weight:800;letter-spacing:-.03em}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--accent);position:relative;flex:0 0 auto}
.brand-mark:after{content:"";position:absolute;left:8px;right:8px;top:15px;height:4px;background:#fff;box-shadow:7px -7px 0 -1px #fff}
.brand strong{font-size:18px;display:block}
.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:5px;margin:0;padding:0;list-style:none}
.nav-links a{display:block;padding:10px 13px;border-radius:9px;font-size:14px;color:#4c5154}
.nav-links a:hover,.nav-links a.active{background:#eee8e1;color:var(--accent-dark)}
.nav-cta,.btn-accent{background:var(--accent);color:#fff!important;border:1px solid var(--accent);border-radius:9px;padding:11px 18px;font-weight:700;display:inline-block}
.nav-cta:hover,.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-2px)}
.subnav{border-top:1px solid #e5e3de;background:#eeece7}
.subnav-inner{display:flex;align-items:center;gap:8px;min-height:43px;overflow:auto;white-space:nowrap}
.subnav a{font-size:12px;color:#777b7c;padding:7px 13px;border-left:1px solid transparent}
.subnav a:hover,.subnav a.active{color:var(--accent-dark);border-left-color:var(--accent)}
.navbar-toggler{border:1px solid var(--line);padding:8px 11px}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(199,100,61,.18)}
.hero-inner{min-height:485px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:55px}
.page-hero{background:#292d2e;color:#fff;position:relative;overflow:hidden}
.page-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(27,30,30,.96),rgba(27,30,30,.72) 54%,rgba(27,30,30,.32)),url("/assets/images/backpic/back-5.webp") center/cover}
.hero-copy,.profile-panel{position:relative;z-index:1}
.eyebrow,.section-kicker{color:var(--accent);font-size:12px;letter-spacing:.14em;font-weight:800}
.hero-copy h1{font-size:clamp(36px,5vw,62px);line-height:1.2;letter-spacing:-.05em;margin:17px 0}
.hero-copy p{font-size:17px;color:#deded8;max-width:650px;margin:0 0 27px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn-light-outline{display:inline-block;border:1px solid rgba(255,255,255,.5);border-radius:9px;padding:10px 17px;color:#fff}
.btn-light-outline:hover{background:#fff;color:var(--ink)}
.profile-panel{justify-self:end;width:min(100%,430px);background:rgba(247,246,242,.96);color:var(--ink);padding:25px;border-radius:16px;box-shadow:0 20px 50px rgba(0,0,0,.2)}
.profile-head{display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);padding-bottom:19px}
.avatar{width:54px;height:54px;border-radius:50%;object-fit:cover}
.profile-head h2{font-size:19px;margin:0}
.profile-head p{font-size:12px;color:var(--muted);margin:2px 0 0}
.follow{margin-left:auto;border:1px solid #dfb6a5;color:var(--accent-dark);border-radius:8px;padding:7px 12px;font-size:12px}
.follow:hover{background:var(--accent);color:#fff}
.profile-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding-top:22px}
.profile-stats strong{font-size:24px;display:block}
.profile-stats span{font-size:12px;color:var(--muted)}
.section{padding:92px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(28px,3.5vw,44px);line-height:1.3;letter-spacing:-.04em;margin:11px 0 14px}
.section-head p{color:var(--muted);margin:0;font-size:16px}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:35px}
.filter-bar a{border:1px solid var(--line);padding:9px 17px;border-radius:30px;color:var(--muted);font-size:13px;background:#fff}
.filter-bar a:hover,.filter-bar a.active{background:var(--accent);border-color:var(--accent);color:#fff}
.solution-list{display:grid;gap:18px}
.solution-row{display:grid;grid-template-columns:90px 1fr 1.1fr auto;gap:25px;align-items:center;background:#fff;border:1px solid var(--line);padding:24px;border-radius:14px;transition:.25s}
.solution-row:hover{transform:translateX(5px);border-color:#d6a18e;box-shadow:var(--shadow)}
.solution-no{font-size:34px;color:var(--accent);font-weight:800}
.solution-row h3{font-size:21px;margin:0 0 6px}
.solution-row p{color:var(--muted);font-size:14px;margin:0}
.solution-row img{width:170px;height:92px;object-fit:cover;border-radius:9px}
.arrow{font-size:23px;color:var(--accent)}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.detail-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.detail-card img{width:100%;height:220px;object-fit:cover}
.detail-body{padding:25px}
.detail-body h3{font-size:22px;margin:0 0 10px}
.detail-body p{font-size:14px;color:var(--muted);margin:0 0 15px}
.tag{display:inline-block;border:1px solid #e5c1b2;color:var(--accent-dark);border-radius:30px;padding:4px 11px;font-size:12px;margin:3px 4px 3px 0}
.stage{background:var(--night);color:#fff;padding:88px 0}
.stage .section-head p{color:#b9bdb8}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid #505654;border-radius:15px;overflow:hidden}
.compare-side{padding:32px}
.compare-side:first-child{background:#2c3131}
.compare-side:last-child{background:#353b39;border-left:1px solid #59605c}
.compare-side h3{font-size:21px;margin-top:0}
.compare-side ul{padding-left:20px;color:#c4c7c2;margin:18px 0 0}
.compare-side li{margin:9px 0}
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.spec{padding:23px;background:var(--warm);border-left:3px solid var(--accent)}
.spec strong{font-size:16px;display:block;margin-bottom:8px}
.spec span{font-size:13px;color:var(--muted)}
.feedback-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.quote{background:#fff;border:1px solid var(--line);padding:30px;border-radius:var(--radius)}
.quote blockquote{font-size:20px;line-height:1.65;margin:0 0 18px}
.quote cite{font-style:normal;color:var(--muted);font-size:13px}
.faq .accordion-item{border:1px solid var(--line);margin-bottom:10px;border-radius:10px!important;overflow:hidden;background:#fff}
.faq .accordion-button{background:#fff;color:var(--ink);font-weight:700;padding:19px 22px;box-shadow:none}
.faq .accordion-button:not(.collapsed){color:var(--accent-dark);background:#f2ebe5}
.faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(199,100,61,.18)}
.faq .accordion-body{color:var(--muted);font-size:14px;padding:0 22px 20px}
.cta-band{background:#e8d5ca;padding:65px 0}
.cta-wrap{display:flex;justify-content:space-between;align-items:center;gap:28px}
.cta-wrap h2{font-size:clamp(27px,4vw,42px);margin:0 0 10px}
.cta-wrap p{color:#6e625d;margin:0}
footer{background:var(--night);color:#e8e8e2;padding:65px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.4fr .7fr .8fr 1.1fr;gap:35px}
.footer-brand p{color:#aeb3ae;font-size:13px;max-width:280px;margin-top:20px}
.footer-col h4{font-size:15px;margin:4px 0 15px}
.footer-col a,.footer-col span{display:block;color:#aeb3ae;font-size:13px;margin:8px 0}
.footer-col a:hover{color:#fff}
footer .brand strong{color:#fff}
footer .brand small{color:#aeb3ae}
.copyright{border-top:1px solid #454a48;margin-top:45px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#8e9690;font-size:12px}
@media(max-width:991px){
 .main-nav{gap:12px}.brand{min-width:0}.nav-links{padding:18px 0;display:block}.nav-links a{margin:3px 0}.nav-cta{display:inline-block;margin-bottom:18px}
 .hero-inner{grid-template-columns:1fr;padding:75px 0}.profile-panel{justify-self:start}
 .solution-row{grid-template-columns:65px 1fr auto}.solution-row img{display:none}
 .spec-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:767px){
 .topbar-inner{display:block;text-align:center}.topbar-inner span{display:block}.topbar-inner span+span{margin-top:2px}
 .subnav-inner{min-height:40px}.hero-copy h1{font-size:39px}.hero-copy p{font-size:15px}
 .section{padding:68px 0}.detail-grid,.feedback-grid,.compare{grid-template-columns:1fr}
 .compare-side:last-child{border-left:0;border-top:1px solid #59605c}.solution-row{grid-template-columns:54px 1fr;padding:19px}.arrow{display:none}
 .cta-wrap{display:block}.cta-wrap .btn-accent{margin-top:22px}.copyright{display:block}.copyright span{display:block;margin:5px 0}
}
@media(max-width:520px){
 .container{padding-left:17px;padding-right:17px}.profile-panel{padding:19px}.profile-stats strong{font-size:20px}
 .spec-grid,.footer-grid{grid-template-columns:1fr}.solution-row h3{font-size:18px}.quote blockquote{font-size:17px}
 .brand strong{font-size:15px}.brand small{font-size:10px}
}

/* roulang page: category4 */
:root{--ink:#202326;--muted:#6e7478;--paper:#f7f6f2;--warm:#eceae4;--line:#dddcd6;--accent:#c7643d;--accent-dark:#9e452c;--night:#202426;--white:#fff;--radius:18px;--shadow:0 16px 45px rgba(30,34,35,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.8}a{color:inherit;text-decoration:none;transition:.25s ease}img{display:block;max-width:100%;height:auto}button,input,textarea{font:inherit}.container{max-width:1240px;padding-left:22px;padding-right:22px}.topbar{background:var(--night);color:#e9e8e2;font-size:13px;padding:8px 0}.topbar-inner{display:flex;justify-content:space-between;gap:18px}.site-header{position:sticky;top:0;z-index:1030;background:rgba(247,246,242,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.main-nav{min-height:74px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:11px;min-width:265px;font-weight:800;letter-spacing:-.03em}.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--accent);position:relative;flex:none}.brand-mark:after{content:"";position:absolute;left:8px;right:8px;top:15px;height:4px;background:#fff;box-shadow:7px -7px 0 -1px #fff}.brand strong{font-size:18px;display:block}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.04em}.nav-links{display:flex;align-items:center;gap:5px;margin:0;padding:0;list-style:none}.nav-links a{display:block;padding:10px 13px;border-radius:9px;font-size:14px;color:#4c5154}.nav-links a:hover,.nav-links a.active{background:#eee8e1;color:var(--accent-dark)}.nav-cta,.btn-accent{background:var(--accent);color:#fff!important;border:1px solid var(--accent);border-radius:9px;padding:11px 18px;font-weight:700}.nav-cta:hover,.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-2px)}.subnav{border-top:1px solid #e5e3de;background:#eeece7}.subnav-inner{display:flex;align-items:center;gap:8px;min-height:43px}.subnav a{font-size:12px;color:#777b7c;padding:7px 13px;border-left:1px solid transparent}.subnav a:hover,.subnav a.active{color:var(--accent-dark);border-left-color:var(--accent)}.navbar-toggler{border:1px solid var(--line);padding:8px 11px}.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(199,100,61,.2)}.page-banner{position:relative;min-height:395px;background:url('/assets/images/backpic/back-5.webp') center/cover;color:#fff;display:flex;align-items:center}.page-banner:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(28,31,31,.9),rgba(28,31,31,.5) 62%,rgba(28,31,31,.2))}.banner-content{position:relative;z-index:1;max-width:790px;padding:78px 0}.eyebrow,.section-kicker{color:var(--accent);font-size:12px;letter-spacing:.14em;font-weight:800}.page-banner h1{font-size:clamp(36px,5vw,62px);line-height:1.22;letter-spacing:-.05em;margin:16px 0 20px}.page-banner p{font-size:17px;color:#e6e5df;max-width:730px;margin:0}.section{padding:92px 0}.section-head{max-width:780px;margin-bottom:38px}.section-head h2{font-size:clamp(28px,3.5vw,43px);line-height:1.3;letter-spacing:-.04em;margin:12px 0 14px}.section-head p{color:var(--muted);margin:0;font-size:16px}.topic-index{display:flex;flex-wrap:wrap;gap:10px;border-bottom:1px solid var(--line);padding-bottom:24px}.topic-index a{padding:10px 17px;border:1px solid var(--line);border-radius:30px;background:#fff;color:#5e6466;font-size:14px}.topic-index a:hover,.topic-index a.active{background:var(--accent);border-color:var(--accent);color:#fff}.guide-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.guide-image{position:relative}.guide-image img{width:100%;height:360px;object-fit:cover;border-radius:12px}.image-note{position:absolute;right:18px;bottom:18px;background:var(--night);color:#fff;padding:10px 14px;border-left:3px solid var(--accent);font-size:12px}.guide-copy h3{font-size:27px;margin:0 0 17px}.guide-copy p{color:var(--muted);font-size:15px}.guide-list{list-style:none;padding:0;margin:24px 0 0}.guide-list li{border-top:1px solid var(--line);padding:13px 0;font-size:14px}.guide-list li:before{content:"01";color:var(--accent);font-weight:800;margin-right:14px}.guide-list li:nth-child(2):before{content:"02"}.guide-list li:nth-child(3):before{content:"03"}.article-zone{background:var(--warm)}.article-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}.article-feature,.article-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.article-feature{display:grid;grid-template-columns:.9fr 1.1fr}.article-feature img{width:100%;height:100%;min-height:275px;object-fit:cover}.article-body{padding:27px}.article-body h3{font-size:23px;line-height:1.4;margin:10px 0 13px}.article-body p{color:var(--muted);font-size:14px;margin:0 0 17px}.article-meta{font-size:12px;color:var(--accent-dark);letter-spacing:.04em}.article-list{display:grid;gap:14px}.article-item{padding:20px 23px}.article-item h3{font-size:18px;line-height:1.45;margin:7px 0}.article-item p{font-size:13px;color:var(--muted);margin:0}.term-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.term-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.25s}.term-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d6a18e}.term-card b{display:inline-flex;background:#f2e2da;color:var(--accent-dark);padding:5px 10px;border-radius:6px;font-size:13px}.term-card h3{font-size:20px;margin:17px 0 8px}.term-card p{font-size:14px;color:var(--muted);margin:0}.process-band{background:var(--night);color:#fff}.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:38px}.process-step{padding:15px 27px;border-left:1px solid #555b58;position:relative}.process-step:first-child{border-left:0}.process-step strong{font-size:34px;color:var(--accent);display:block;line-height:1}.process-step h3{font-size:19px;margin:17px 0 8px}.process-step p{font-size:13px;color:#bec2bd;margin:0}.faq-list{max-width:850px}.accordion-item{background:#fff;border:1px solid var(--line)!important;margin-bottom:11px;border-radius:12px!important;overflow:hidden}.accordion-button{background:#fff;color:var(--ink);font-weight:700;padding:19px 22px;box-shadow:none!important}.accordion-button:not(.collapsed){background:#f2e8e2;color:var(--accent-dark)}.accordion-button:focus{box-shadow:0 0 0 3px rgba(199,100,61,.2)!important}.accordion-body{color:var(--muted);font-size:14px;padding:0 22px 21px}.cta{background:var(--accent);color:#fff;padding:62px 0}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:clamp(27px,3.5vw,42px);margin:0 0 10px;line-height:1.3}.cta p{margin:0;color:#f9e9e2}.cta .btn-light{color:var(--accent-dark);border-radius:9px;padding:13px 21px;font-weight:700}.cta .btn-light:hover{background:#fff3ec;transform:translateY(-2px)}footer{background:var(--night);color:#e9e8e2;padding:62px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1.2fr;gap:35px}.footer-brand p{color:#afb4b0;font-size:14px;margin-top:21px;max-width:290px}.footer-col h4{font-size:15px;margin:4px 0 16px;color:#fff}.footer-col a,.footer-col span{display:block;color:#b7bbb7;font-size:13px;margin:8px 0}.footer-col a:hover{color:#fff0e9}.copyright{border-top:1px solid #454a48;margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#8f9691;font-size:12px}.btn-outline-dark{border:1px solid var(--ink);border-radius:9px;padding:10px 17px}.btn-outline-dark:hover{background:var(--ink);color:#fff}.text-link{color:var(--accent-dark);font-weight:700;font-size:14px}.text-link:hover{color:var(--accent)}@media(max-width:991px){.main-nav{gap:12px}.brand{min-width:0}.nav-links{padding:15px 0;display:block}.nav-links a{padding:11px 12px}.nav-cta{display:inline-block;margin-bottom:15px}.subnav-inner{overflow-x:auto;white-space:nowrap}.guide-layout,.article-grid{grid-template-columns:1fr}.article-feature{grid-template-columns:1fr}.article-feature img{height:250px}.process-grid{grid-template-columns:repeat(2,1fr);gap:20px}.process-step:nth-child(3){border-left:0}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:575px){.topbar-inner{display:block;font-size:11px}.topbar-inner span{display:block}.topbar-inner span+span{margin-top:3px}.page-banner{min-height:430px}.banner-content{padding:65px 0}.page-banner h1{font-size:39px}.page-banner p{font-size:15px}.section{padding:68px 0}.guide-image img{height:260px}.term-grid,.process-grid{grid-template-columns:1fr}.process-step,.process-step:nth-child(3){border-left:0;border-top:1px solid #555b58;padding:22px 0}.process-step:first-child{border-top:0}.cta-inner{display:block}.cta .btn-light{display:inline-block;margin-top:25px}.footer-grid{grid-template-columns:1fr;gap:22px}.copyright{display:block}.copyright span{display:block;margin:5px 0}.container{padding-left:18px;padding-right:18px}}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}