/* roulang page: index */
:root{
      --ink:#202522;--muted:#66716b;--paper:#fbfaf5;--soft:#eef2e9;--line:#dbe2d8;
      --lime:#b9dc52;--lime-dark:#759b28;--orange:#ef8b45;--dark:#202923;--white:#fff;
      --radius:14px;--shadow:0 12px 30px rgba(31,47,35,.08);--max:1180px
    }
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;font-size:16px}a{color:inherit;text-decoration:none;transition:.25s ease}img{max-width:100%;display:block}button{font:inherit}.container{max-width:var(--max);margin:auto;padding:0 22px}
    .site-header{background:rgba(251,250,245,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-weight:800;letter-spacing:-.04em;font-size:20px;display:flex;align-items:center;gap:10px;white-space:nowrap}.brand-mark{width:28px;height:28px;background:var(--lime);border-radius:8px 15px 8px 15px;display:inline-block;position:relative}.brand-mark:after{content:"";position:absolute;width:8px;height:8px;border:2px solid var(--dark);border-radius:50%;right:5px;top:5px}.main-nav{display:flex;align-items:center;gap:6px}.main-nav a{padding:10px 13px;color:#4b554f;font-size:14px;border-radius:8px}.main-nav a:hover,.main-nav a.active{background:var(--soft);color:var(--ink)}.nav-cta,.btn-primary{background:var(--lime);color:var(--dark)!important;font-weight:800;border-radius:8px!important;padding:12px 18px!important;box-shadow:0 5px 0 #93b938}.nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);background:#c9ec68}.menu-toggle{display:none;background:none;border:1px solid var(--line);padding:8px 11px;border-radius:8px}
    .hero{padding:86px 0 78px;background:linear-gradient(100deg,rgba(251,250,245,.98) 35%,rgba(238,242,233,.72)),url('/assets/images/7535e10dc6ce567b.jpg') center/cover;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;right:-130px;top:70px;width:420px;height:420px;border:1px solid rgba(117,155,40,.22);border-radius:50%}.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--lime-dark);font-weight:800;font-size:12px;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange)}h1,h2,h3{line-height:1.2;margin:0 0 16px;letter-spacing:-.045em}h1{font-size:clamp(36px,5vw,67px);max-width:790px}h2{font-size:clamp(28px,3vw,42px)}h3{font-size:21px}.hero-copy{max-width:760px;position:relative;z-index:1}.hero-copy p{font-size:18px;max-width:710px;color:#4e5952;margin:0 0 28px}.actions{display:flex;gap:14px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);padding:13px 20px;border-radius:8px;font-weight:750;min-height:48px}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.btn-outline{background:rgba(255,255,255,.55)}.hero-board{display:flex;gap:10px;margin-top:36px;flex-wrap:wrap}.status{border-left:3px solid var(--orange);padding:5px 18px;background:rgba(255,255,255,.62);font-size:13px}.status strong{display:block;font-size:16px;color:var(--ink)}
    main section{padding:84px 0}.section-head{max-width:720px;margin-bottom:34px}.section-head p{color:var(--muted);margin:0;font-size:17px}.section-kicker{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:12px}.dark-section{background:var(--dark);color:#f7f9ed}.dark-section .section-head p{color:#bdc8bb}.dark-section .muted{color:#bdc8bb}
    .points{display:grid;grid-template-columns:1.2fr 1fr 1fr;border-top:1px solid var(--line)}.point{padding:25px 26px 22px 0;border-right:1px solid var(--line);margin-right:26px}.point:last-child{border:0}.number{font-size:13px;color:var(--orange);font-weight:800;display:block;margin-bottom:25px}.point p,.info-card p,.scene p,.feedback p,.guide-item p,.faq-answer{color:var(--muted);margin:0}.prep-grid{display:grid;grid-template-columns:1fr 1.8fr;gap:28px;align-items:stretch}.prep-label{background:var(--dark);color:#fff;padding:34px;border-radius:var(--radius);display:flex;flex-direction:column;justify-content:space-between}.prep-label .tag{color:var(--lime)}.device-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.info-card{border:1px solid var(--line);background:#fff;padding:24px;border-radius:10px}.info-card:hover{border-color:var(--lime-dark);box-shadow:var(--shadow)}.info-card h3{font-size:18px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #536257}.step{padding:24px 22px 10px 0;border-right:1px solid #536257;margin-right:22px}.step:last-child{border:0}.step-no{font-size:42px;color:var(--lime);font-weight:800;line-height:1;margin-bottom:25px}.step p{color:#c6d0c5;font-size:15px}.step img{height:110px;width:100%;object-fit:cover;margin-bottom:18px;border-radius:8px;opacity:.82}.scenes{display:grid;grid-template-columns:1.35fr .8fr .8fr;gap:15px}.scene{min-height:300px;padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;position:relative}.scene:first-child{background:linear-gradient(180deg,rgba(25,35,28,.1),rgba(25,35,28,.85)),url('/assets/images/f9ad6608df2838bb.jpg') center/cover;color:#fff}.scene:first-child p{color:#e5eee0}.scene h3{position:relative}.scene p{font-size:14px}.feedback-band{display:flex;gap:28px;align-items:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:28px 0}.quote{font-size:26px;line-height:1.45;max-width:700px}.feedback-meta{margin-left:auto;min-width:180px;color:var(--muted);font-size:14px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare-box{padding:28px;border:1px solid var(--line);background:#fff;border-radius:10px}.compare-box.highlight{background:var(--lime);border-color:var(--lime)}.compare-box ul,.checklist{padding:0;margin:18px 0 0;list-style:none}.compare-box li,.checklist li{padding:10px 0;border-bottom:1px solid rgba(32,37,34,.12);font-size:15px}.compare-box li:before,.checklist li:before{content:"✓";color:var(--lime-dark);font-weight:800;margin-right:9px}.guide-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:34px}.guide-list{counter-reset:guide}.guide-item{display:grid;grid-template-columns:48px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}.guide-item:before{counter-increment:guide;content:"0" counter(guide);font-weight:800;color:var(--orange);font-size:18px}.guide-item h3{font-size:18px;margin-bottom:5px}.guide-side{background:#fff;border:1px solid var(--line);padding:28px;border-radius:10px}.checklist li{color:#4d5951}.security{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.security img{height:300px;width:100%;object-fit:cover;border-radius:var(--radius)}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:20px 0}summary{cursor:pointer;font-weight:800;list-style:none;padding-right:25px;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:0;color:var(--orange);font-size:22px}details[open] summary:after{content:"−"}.faq-answer{padding:13px 28px 0 0;max-width:850px}.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.matrix a{background:var(--soft);padding:22px;border-radius:10px;border:1px solid transparent}.matrix a:hover{border-color:var(--lime-dark);background:#e5efd4;transform:translateY(-2px)}.matrix small{display:block;color:var(--orange);font-weight:800;margin-bottom:9px}.closing{background:var(--lime);padding:55px 0}.closing-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}.closing h2{max-width:650px}.site-footer{background:var(--dark);color:#dce6d8;padding:48px 0 92px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:30px}.footer-brand{font-size:20px;font-weight:800}.footer-title{font-size:13px;color:var(--lime);font-weight:800;margin-bottom:12px}.footer-links{display:flex;flex-direction:column;gap:7px;color:#b8c6b6;font-size:14px}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid #425045;margin-top:35px;padding-top:20px;color:#9cab9a;font-size:13px}.fixed-bar{position:fixed;bottom:0;left:0;right:0;background:rgba(32,41,35,.96);color:#fff;z-index:30;padding:10px 0;box-shadow:0 -5px 20px rgba(0,0,0,.12)}.fixed-inner{display:flex;justify-content:space-between;align-items:center;gap:15px}.fixed-label{font-size:14px}.fixed-label strong{color:var(--lime);margin-right:8px}.fixed-actions{display:flex;gap:9px}.fixed-actions a{padding:8px 14px;border-radius:6px;font-size:13px}.fixed-actions .main{background:var(--lime);color:var(--dark);font-weight:800}.close-bar{background:none;border:0;color:#a9b8a7;font-size:20px;cursor:pointer}.close-bar:hover{color:#fff}
    :focus-visible{outline:3px solid var(--orange);outline-offset:3px}@media(max-width:900px){.main-nav{gap:0}.main-nav a{padding:9px 7px;font-size:13px}.points,.scenes{grid-template-columns:1fr 1fr}.point:last-child{grid-column:1/-1;border-top:1px solid var(--line);padding-top:22px;margin-top:10px}.steps{grid-template-columns:1fr 1fr;gap:20px}.step{border-bottom:1px solid #536257;padding-bottom:20px}.prep-grid,.guide-layout,.security{grid-template-columns:1fr}.security img{height:240px}}
    @media(max-width:640px){body{font-size:15px}.container{padding:0 17px}.nav-wrap{min-height:65px}.brand{font-size:16px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:65px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 17px;flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:12px}.nav-cta{text-align:center}.hero{padding:60px 0 55px}.hero-copy p{font-size:16px}.hero-board{display:grid;grid-template-columns:1fr 1fr}.status{padding:5px 9px}.actions,.actions .btn{width:100%}main section{padding:58px 0}.points,.scenes,.compare,.matrix,.footer-grid{grid-template-columns:1fr}.point{border-right:0;border-bottom:1px solid var(--line);margin:0;padding:23px 0}.point:last-child{grid-column:auto}.device-list{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{margin:0;border-right:0}.step img{height:150px}.feedback-band{display:block}.feedback-meta{margin-top:18px}.guide-item{grid-template-columns:38px 1fr}.closing-inner{display:block}.closing .btn{margin-top:20px;width:100%}.fixed-inner{padding:0 17px}.fixed-label{font-size:12px}.fixed-label strong{display:block}.fixed-actions a{padding:9px 10px}.fixed-actions .sub{display:none}.site-footer{padding-bottom:115px}}

/* roulang page: category1 */
:root{
 --ink:#202522;--muted:#66716b;--paper:#fbfaf5;--soft:#eef2e9;--line:#dbe2d8;
 --lime:#b9dc52;--lime-dark:#759b28;--orange:#ef8b45;--dark:#202923;--white:#fff;
 --radius:14px;--shadow:0 12px 30px rgba(31,47,35,.08);--max:1180px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;font-size:16px}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
.container{max-width:var(--max);margin:auto;padding:0 22px}
.site-header{background:rgba(251,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-weight:800;letter-spacing:-.04em;font-size:20px;display:flex;align-items:center;gap:10px;white-space:nowrap}
.brand-mark{width:28px;height:28px;background:var(--lime);border-radius:8px 15px 8px 15px;display:inline-block;position:relative}
.brand-mark:after{content:"";position:absolute;width:8px;height:8px;border:2px solid var(--dark);border-radius:50%;right:5px;top:5px}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:10px 11px;color:#4b554f;font-size:14px;border-radius:8px}
.main-nav a:hover,.main-nav a.active{background:var(--soft);color:var(--ink)}
.nav-cta,.btn-primary{background:var(--lime);color:var(--dark)!important;font-weight:800;border-radius:8px!important;padding:12px 18px!important;box-shadow:0 5px 0 #93b938}
.nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);background:#c9ec68}
.menu-toggle{display:none;background:none;border:1px solid var(--line);padding:8px 11px;border-radius:8px}
.menu-toggle:focus,.btn:focus,.main-nav a:focus{outline:3px solid rgba(117,155,40,.35);outline-offset:2px}
.page-intro{padding:82px 0 68px;background:linear-gradient(100deg,rgba(251,250,245,.98) 32%,rgba(238,242,233,.78)),url('/assets/images/f9ad6608df2838bb.jpg') center/cover;position:relative;overflow:hidden}
.page-intro:after{content:"";position:absolute;right:-120px;top:50px;width:390px;height:390px;border:1px solid rgba(117,155,40,.25);border-radius:50%}
.intro-grid{display:grid;grid-template-columns:1.35fr .75fr;gap:44px;align-items:end;position:relative;z-index:1}
.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--lime-dark);font-weight:800;font-size:12px;letter-spacing:.08em}
.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange)}
h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
h1{font-size:clamp(34px,5vw,62px);margin:18px 0 20px;max-width:750px}
h2{font-size:clamp(26px,3vw,38px);margin:0 0 12px}
h3{font-size:19px;margin:0 0 8px}
.intro-copy p{font-size:18px;color:#4e5952;max-width:700px;margin:0 0 26px}
.intro-note{background:var(--dark);color:#f7f9ed;padding:25px;border-radius:12px;box-shadow:var(--shadow)}
.intro-note strong{display:block;color:var(--lime);font-size:28px;margin:4px 0 8px}
.intro-note p{color:#c5d0c3;font-size:14px;margin:0}
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);padding:13px 20px;border-radius:8px;font-weight:750;min-height:48px}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-outline{background:rgba(255,255,255,.55)}
main section{padding:82px 0}
.section-head{max-width:730px;margin-bottom:34px}
.section-kicker{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:12px}
.section-head p{color:var(--muted);margin:0;font-size:17px}
.prep-layout{display:grid;grid-template-columns:.8fr 1.5fr;gap:28px}
.prep-panel{background:var(--dark);color:#f7f9ed;border-radius:12px;padding:28px}
.prep-panel .tag{color:var(--lime)}
.prep-panel p{color:#c5d0c3;margin:18px 0 0}
.prep-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}
.info-card{border:1px solid var(--line);background:#fff;padding:24px;border-radius:10px;transition:.25s ease}
.info-card:hover{border-color:var(--lime-dark);box-shadow:var(--shadow);transform:translateY(-2px)}
.info-card p{color:var(--muted);margin:0;font-size:15px}
.info-card .number{color:var(--orange);font-size:13px;font-weight:800;margin-bottom:12px}
.feature-section{background:var(--soft)}
.feature-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.feature-image{min-height:350px;border-radius:14px;background:url('/assets/images/9a944dd657e6898b.jpg') center/cover;position:relative;overflow:hidden}
.feature-image:after{content:"下载说明";position:absolute;left:22px;bottom:20px;background:var(--lime);padding:7px 12px;border-radius:6px;font-weight:800;font-size:13px}
.feature-copy{background:#fff;border:1px solid var(--line);padding:32px;border-radius:12px}
.feature-copy p{color:var(--muted)}
.guide-list{counter-reset:guide;margin:0}
.guide-item{display:grid;grid-template-columns:55px 1fr auto;gap:18px;align-items:start;padding:21px 0;border-bottom:1px solid var(--line)}
.guide-item:before{counter-increment:guide;content:"0" counter(guide);font-weight:800;color:var(--orange);font-size:19px}
.guide-item p{color:var(--muted);margin:0;max-width:680px}
.guide-item .guide-type{color:var(--lime-dark);font-size:13px;font-weight:800;white-space:nowrap;padding-top:3px}
.timeline-section{background:#fff}
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid var(--lime)}
.timeline-step{padding:25px 20px 10px 0;position:relative}
.timeline-step:before{content:"";width:14px;height:14px;background:var(--orange);border:4px solid var(--paper);border-radius:50%;position:absolute;top:-9px;left:0}
.timeline-step strong{display:block;color:var(--lime-dark);font-size:13px;margin-bottom:12px}
.timeline-step p{color:var(--muted);font-size:15px;margin:0;padding-right:18px}
.security-section{background:var(--dark);color:#f7f9ed}
.security-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:center}
.security-image{height:310px;border-radius:13px;background:url('/assets/images/c1a32e336f1cdbff.jpg') center/cover}
.security-copy p{color:#c5d0c3}
.checklist{list-style:none;padding:0;margin:20px 0 0}
.checklist li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.13);color:#e3eadf}
.checklist li:before{content:"✓";color:var(--lime);font-weight:800;margin-right:10px}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line);padding:19px 0}
.faq-list summary{cursor:pointer;font-weight:800;padding-right:28px;position:relative;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"＋";position:absolute;right:0;color:var(--lime-dark)}
.faq-list details[open] summary:after{content:"−"}
.faq-answer{color:var(--muted);padding:13px 35px 0 0;max-width:850px}
.closing{padding:58px 0;background:var(--lime)}
.closing-layout{display:flex;justify-content:space-between;align-items:center;gap:24px}
.closing p{margin:6px 0 0;color:#3f5129}
.closing .btn{border-color:var(--dark);background:var(--dark);color:#fff}
.site-footer{background:var(--dark);color:#dce6d8;padding:48px 0 92px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:30px}
.footer-brand{font-size:20px;font-weight:800}
.footer-grid p{color:#b8c6b6;font-size:14px;max-width:390px}
.footer-title{font-size:13px;color:var(--lime);font-weight:800;margin-bottom:12px}
.footer-links{display:flex;flex-direction:column;gap:7px;color:#b8c6b6;font-size:14px}
.footer-links a:hover{color:#fff}
.copyright{border-top:1px solid #425045;margin-top:35px;padding-top:20px;color:#9cab9a;font-size:13px}
.fixed-actions{position:fixed;right:24px;bottom:18px;z-index:30;background:var(--dark);padding:9px;border-radius:10px;box-shadow:0 10px 28px rgba(0,0,0,.18);display:flex;gap:7px;color:#fff}
.fixed-actions a{padding:8px 14px;border-radius:6px;font-size:13px}
.fixed-actions .main{background:var(--lime);color:var(--dark);font-weight:800}
@media(max-width:900px){
 .container{padding:0 17px}.nav-wrap{min-height:65px}.brand{font-size:16px}.menu-toggle{display:block}
 .main-nav{display:none;position:absolute;top:65px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 17px;flex-direction:column;align-items:stretch}
 .main-nav.open{display:flex}.main-nav a{padding:12px}.nav-cta{text-align:center}
 .page-intro{padding:60px 0 55px}.intro-grid,.prep-layout,.feature-layout,.security-layout{grid-template-columns:1fr}
 h1{font-size:39px}.intro-copy p{font-size:16px}.prep-list{grid-template-columns:1fr}
 .feature-image{min-height:260px}.timeline{grid-template-columns:1fr;border-top:0;border-left:2px solid var(--lime);margin-left:7px}
 .timeline-step{padding:4px 0 25px 26px}.timeline-step:before{left:-8px;top:4px}.timeline-step p{padding:0}
 .security-image{height:240px}.closing-layout{display:block}.closing .btn{margin-top:20px;width:100%}
 .fixed-actions{left:10px;right:10px;bottom:9px;justify-content:space-between}.fixed-actions a{flex:1;text-align:center;padding:10px 6px}
 .site-footer{padding-bottom:112px}.footer-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
 body{font-size:15px}main section{padding:58px 0}.section-head p{font-size:15px}
 h1{font-size:32px}.intro-note strong{font-size:24px}.guide-item{grid-template-columns:38px 1fr}
 .guide-item .guide-type{grid-column:2}.feature-copy{padding:23px}
}

/* roulang page: category2 */
:root{
      --ink:#202522;--muted:#66716b;--paper:#fbfaf5;--soft:#eef2e9;--line:#dbe2d8;
      --lime:#b9dc52;--lime-dark:#759b28;--orange:#ef8b45;--dark:#202923;--white:#fff;
      --radius:14px;--shadow:0 12px 30px rgba(31,47,35,.08);--max:1180px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button{font:inherit;cursor:pointer}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(32px,5vw,58px);line-height:1.18;letter-spacing:-.045em;margin-bottom:20px}
    h2{font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-.035em;margin-bottom:14px}
    h3{font-size:19px;line-height:1.4;margin-bottom:8px}
    .container{max-width:var(--max);margin:auto;padding:0 22px}
    .site-header{background:rgba(251,250,245,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{font-weight:800;letter-spacing:-.04em;font-size:20px;display:flex;align-items:center;gap:10px;white-space:nowrap}
    .brand-mark{width:28px;height:28px;background:var(--lime);border-radius:8px 15px 8px 15px;display:inline-block;position:relative}
    .brand-mark:after{content:"";position:absolute;width:8px;height:8px;border:2px solid var(--dark);border-radius:50%;right:5px;top:5px}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:10px 11px;color:#4b554f;font-size:14px;border-radius:8px}
    .main-nav a:hover,.main-nav a.active{background:var(--soft);color:var(--ink)}
    .nav-cta,.btn-primary{background:var(--lime);color:var(--dark)!important;font-weight:800;border-radius:8px!important;padding:12px 18px!important;box-shadow:0 5px 0 #93b938}
    .nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);background:#c9ec68}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);padding:8px 11px;border-radius:8px;color:var(--ink)}
    .page-intro{padding:78px 0 66px;background:linear-gradient(100deg,rgba(251,250,245,.97) 30%,rgba(238,242,233,.72)),url('/assets/images/f9ad6608df2838bb.jpg') center/cover;position:relative;overflow:hidden}
    .page-intro:after{content:"";position:absolute;right:7%;top:50px;width:260px;height:260px;border:1px solid rgba(117,155,40,.28);border-radius:50%}
    .intro-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:54px;align-items:center;position:relative;z-index:1}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--lime-dark);font-weight:800;font-size:12px;letter-spacing:.08em;text-transform:uppercase}
    .eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange)}
    .intro-copy p{font-size:18px;max-width:680px;color:#4e5952;margin-bottom:26px}
    .intro-note{background:rgba(255,255,255,.84);border:1px solid var(--line);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow)}
    .intro-note strong{display:block;font-size:27px;line-height:1.2;margin:8px 0}
    .intro-note span{font-size:14px;color:var(--muted)}
    .btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);padding:13px 20px;border-radius:8px;font-weight:750;min-height:48px}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .btn-outline{background:rgba(255,255,255,.55)}
    main section{padding:78px 0}
    .section-head{max-width:720px;margin-bottom:32px}
    .section-head p{color:var(--muted);margin:0;font-size:17px}
    .section-kicker{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:10px}
    .dark-section{background:var(--dark);color:#f7f9ed}
    .dark-section .section-head p,.dark-section .muted{color:#bdc8bb}
    .install-track{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
    .install-track:before{content:"";position:absolute;top:25px;left:9%;right:9%;height:1px;background:#c8d8b5}
    .install-step{position:relative;padding:0 18px 0 0}
    .step-number{width:50px;height:50px;border-radius:50%;background:var(--lime);border:7px solid var(--paper);outline:1px solid var(--lime-dark);display:flex;align-items:center;justify-content:center;font-weight:900;position:relative;z-index:1;margin-bottom:20px}
    .install-step p{color:var(--muted);font-size:15px;margin:0}
    .device-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px}
    .device-panel{background:var(--dark);color:#f7f9ed;padding:30px;border-radius:var(--radius);min-height:100%}
    .device-panel p{color:#bdc8bb}
    .device-panel .tag{color:var(--lime)}
    .device-table{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .device-row{display:grid;grid-template-columns:1fr 1.4fr;gap:20px;padding:20px 24px;border-bottom:1px solid var(--line)}
    .device-row:last-child{border-bottom:0}
    .device-row strong{font-size:16px}
    .device-row span{color:var(--muted);font-size:15px}
    .tutorial-list{counter-reset:tutorial}
    .tutorial-item{display:grid;grid-template-columns:70px 1fr auto;gap:22px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
    .tutorial-item:before{counter-increment:tutorial;content:"0" counter(tutorial);font-size:22px;color:var(--orange);font-weight:850}
    .tutorial-item p{margin:0;color:var(--muted);font-size:15px}
    .tutorial-item .tag{color:var(--muted);font-size:11px;white-space:nowrap}
    .exception-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .exception-card{background:#fff;border:1px solid var(--line);padding:23px;border-radius:10px;display:grid;grid-template-columns:38px 1fr;gap:14px}
    .exception-card:hover{border-color:var(--lime-dark);box-shadow:var(--shadow);transform:translateY(-2px)}
    .exception-icon{width:32px;height:32px;border-radius:8px;background:#fbe7d7;color:#b75f29;display:flex;align-items:center;justify-content:center;font-weight:900}
    .exception-card p{color:var(--muted);font-size:15px;margin:0}
    .visual-guide{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch}
    .visual-guide img{width:100%;height:300px;object-fit:cover;border-radius:var(--radius)}
    .tip-board{border:1px solid var(--line);background:#fff;padding:30px;border-radius:var(--radius)}
    .tip-board ul{list-style:none;padding:0;margin:20px 0 0}
    .tip-board li{padding:12px 0;border-bottom:1px solid var(--line);color:#4d5951}
    .tip-board li:before{content:"✓";color:var(--lime-dark);font-weight:900;margin-right:10px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-list details{border-bottom:1px solid var(--line);padding:18px 0}
    .faq-list summary{cursor:pointer;font-weight:750;padding-right:25px;position:relative;list-style:none}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"＋";position:absolute;right:0;color:var(--lime-dark);font-size:22px}
    .faq-list details[open] summary:after{content:"－"}
    .faq-answer{padding:13px 28px 0 0;max-width:850px;color:var(--muted);margin:0}
    .closing{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .closing-grid{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .closing p{color:var(--muted);margin:0}
    .site-footer{background:var(--dark);color:#dce6d8;padding:48px 0 92px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:30px}
    .footer-brand{font-size:20px;font-weight:800}
    .footer-grid p{color:#b8c6b6;font-size:14px;max-width:360px}
    .footer-title{font-size:13px;color:var(--lime);font-weight:800;margin-bottom:12px}
    .footer-links{display:flex;flex-direction:column;gap:7px;color:#b8c6b6;font-size:14px}
    .footer-links a:hover{color:#fff}
    .copyright{border-top:1px solid #425045;margin-top:35px;padding-top:20px;color:#9cab9a;font-size:13px}
    .fixed-actions{position:fixed;bottom:0;left:0;right:0;background:rgba(32,41,35,.96);z-index:30;padding:10px 20px;display:flex;justify-content:center;align-items:center;gap:12px;color:#eef5e9}
    .fixed-actions span{font-size:13px;color:#c6d1c1}
    .fixed-actions a{padding:8px 14px;border-radius:6px;font-size:13px}
    .fixed-actions .main{background:var(--lime);color:var(--dark);font-weight:800}
    .fixed-actions a:hover{transform:translateY(-2px)}
    :focus-visible{outline:3px solid var(--orange);outline-offset:3px}
    @media(max-width:900px){
      .nav-wrap{min-height:65px}.brand{font-size:16px}.menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:65px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 17px;flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}.main-nav a{padding:12px}.nav-cta{text-align:center}
      .intro-grid,.device-layout,.visual-guide{grid-template-columns:1fr}
      .page-intro{padding:60px 0 55px}.intro-copy p{font-size:16px}
      main section{padding:58px 0}.install-track{grid-template-columns:1fr 1fr;gap:28px}
      .install-track:before{display:none}.tutorial-item{grid-template-columns:48px 1fr}.tutorial-item .tag{grid-column:2}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:560px){
      .container{padding:0 17px}h1{font-size:34px}.intro-note strong{font-size:23px}
      .install-track,.exception-grid,.footer-grid{grid-template-columns:1fr}
      .device-row{grid-template-columns:1fr;gap:4px}.visual-guide img{height:220px}
      .closing-grid{display:block}.closing .btn{width:100%;margin-top:20px}
      .fixed-actions{justify-content:space-between;padding:9px 10px}.fixed-actions span{display:none}.fixed-actions a{flex:1;text-align:center}
      .site-footer{padding-bottom:105px}
    }

/* roulang page: category3 */
:root{--ink:#202522;--muted:#66716b;--paper:#fbfaf5;--soft:#eef2e9;--line:#dbe2d8;--lime:#b9dc52;--lime-dark:#759b28;--orange:#ef8b45;--dark:#202923;--white:#fff;--radius:14px;--shadow:0 12px 30px rgba(31,47,35,.08);--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;font-size:16px}a{color:inherit;text-decoration:none;transition:.25s ease}img{max-width:100%;display:block}button{font:inherit}.container{max-width:var(--max);margin:auto;padding:0 22px}
.site-header{background:rgba(251,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-weight:800;letter-spacing:-.04em;font-size:20px;display:flex;align-items:center;gap:10px;white-space:nowrap}.brand-mark{width:28px;height:28px;background:var(--lime);border-radius:8px 15px 8px 15px;display:inline-block;position:relative}.brand-mark:after{content:"";position:absolute;width:8px;height:8px;border:2px solid var(--dark);border-radius:50%;right:5px;top:5px}.main-nav{display:flex;align-items:center;gap:4px}.main-nav a{padding:10px 11px;color:#4b554f;font-size:14px;border-radius:8px}.main-nav a:hover,.main-nav a.active{background:var(--soft);color:var(--ink)}.nav-cta,.btn-primary{background:var(--lime);color:var(--dark)!important;font-weight:800;border-radius:8px!important;padding:12px 18px!important;box-shadow:0 5px 0 #93b938}.nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);background:#c9ec68}.menu-toggle{display:none;background:none;border:1px solid var(--line);padding:8px 11px;border-radius:8px;color:var(--ink)}
main section{padding:78px 0}.intro{padding:72px 0 66px;background:linear-gradient(100deg,rgba(251,250,245,.98) 30%,rgba(238,242,233,.72)),url('/assets/images/9a944dd657e6898b.jpg') center/cover;position:relative;overflow:hidden}.intro:after{content:"";position:absolute;right:-120px;top:50px;width:370px;height:370px;border:1px solid rgba(117,155,40,.22);border-radius:50%}.intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;position:relative;z-index:1}.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--lime-dark);font-weight:800;font-size:12px;letter-spacing:.08em}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange)}h1{font-size:clamp(36px,5vw,62px);line-height:1.13;letter-spacing:-.06em;margin:16px 0 20px;max-width:700px}h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.04em;margin:0 0 14px}h3{font-size:19px;line-height:1.4;margin:0 0 8px}.intro p{font-size:18px;max-width:680px;color:#4e5952;margin:0 0 25px}.intro-image{border-radius:var(--radius);overflow:hidden;border:8px solid rgba(255,255,255,.72);box-shadow:var(--shadow);transform:rotate(1.5deg)}.intro-image img{width:100%;height:330px;object-fit:cover}.hero-note{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.badge{background:var(--dark);color:#eff6e5;padding:8px 12px;border-radius:6px;font-size:13px}.badge strong{color:var(--lime);margin-right:5px}
.section-head{max-width:720px;margin-bottom:32px}.section-head p{color:var(--muted);font-size:17px;margin:0}.section-kicker{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:10px}.dark-section{background:var(--dark);color:#f7f9ed}.dark-section .section-head p{color:#bdc8bb}.timeline{position:relative;margin:10px 0 0;padding-left:34px}.timeline:before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:#cbd9b6}.timeline-item{position:relative;padding:0 0 30px 24px}.timeline-item:before{content:"";position:absolute;left:-32px;top:7px;width:16px;height:16px;border-radius:50%;background:var(--lime);border:4px solid var(--dark)}.timeline-item:last-child{padding-bottom:0}.timeline-meta{font-size:12px;color:var(--lime);font-weight:800;letter-spacing:.1em;margin-bottom:5px}.timeline-item p,.help-list p,.issue p,.verify p,.reminder p{color:var(--muted);margin:0}.timeline-item p{color:#bdc8bb}
.verify-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:stretch}.verify-panel{background:var(--dark);color:#f5f8ed;border-radius:var(--radius);padding:32px}.verify-panel p{color:#c0cdbd}.checklist{list-style:none;padding:0;margin:20px 0 0}.checklist li{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.15);color:#e9f0df}.checklist li:before{content:"✓";color:var(--lime);font-weight:800;margin-right:10px}.verify-table{border:1px solid var(--line);background:#fff;border-radius:var(--radius);overflow:hidden}.verify-row{display:grid;grid-template-columns:1fr 1.3fr;padding:18px 22px;border-bottom:1px solid var(--line);gap:20px}.verify-row:last-child{border-bottom:0}.verify-row strong{font-size:15px}.verify-row span{color:var(--muted);font-size:14px}
.help-layout{display:grid;grid-template-columns:1.4fr .8fr;gap:38px}.help-list{counter-reset:item}.help-item{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}.help-item:before{counter-increment:item;content:"0" counter(item);font-size:18px;color:var(--orange);font-weight:800}.help-item p{font-size:14px}.side-note{background:var(--soft);border-left:4px solid var(--lime-dark);padding:26px;height:max-content}.side-note ul{padding-left:20px;color:var(--muted);font-size:14px}
.issue-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.issue{background:#fff;border:1px solid var(--line);padding:24px;border-radius:10px}.issue:hover{border-color:var(--lime-dark);box-shadow:var(--shadow);transform:translateY(-2px)}.issue-label{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.08em;margin-bottom:7px}.issue p{font-size:14px}.reminder{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.reminder-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.reminder-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:0;margin:0;list-style:none}.reminder-list li{background:#fff;border:1px solid var(--line);padding:14px;border-radius:8px;font-size:14px}.reminder-list li:before{content:"•";color:var(--orange);font-weight:bold;margin-right:8px}
.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:18px 0}summary{cursor:pointer;font-weight:750;padding-right:30px;position:relative;list-style:none}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:4px;color:var(--lime-dark);font-size:22px}details[open] summary:after{content:"−"}.faq-answer{color:var(--muted);padding:12px 32px 0 0;max-width:850px}.closing{background:var(--dark);color:#f7f9ed}.closing-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.closing p{color:#bdc8bb;margin:0}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);padding:13px 20px;border-radius:8px;font-weight:750;min-height:48px}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.btn-primary{border:0}.btn-light{background:#fff;color:var(--ink);border-color:#fff}.site-footer{background:var(--dark);color:#dce6d8;padding:48px 0 100px;border-top:1px solid #425045}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:30px}.footer-brand{font-size:20px;font-weight:800}.footer-title{font-size:13px;color:var(--lime);font-weight:800;margin-bottom:12px}.footer-links{display:flex;flex-direction:column;gap:7px;color:#b8c6b6;font-size:14px}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid #425045;margin-top:35px;padding-top:20px;color:#9cab9a;font-size:13px}.fixed-actions{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:30;background:var(--dark);color:#fff;border:1px solid #46574a;border-radius:10px;padding:8px;display:flex;align-items:center;gap:8px;box-shadow:0 10px 30px rgba(0,0,0,.2)}.fixed-actions a{padding:8px 14px;border-radius:6px;font-size:13px}.fixed-actions .main{background:var(--lime);color:var(--dark);font-weight:800}.fixed-actions button{background:transparent;color:#bdc8bb;border:0;cursor:pointer;padding:7px}.fixed-actions button:hover{color:#fff}
a:focus,button:focus,summary:focus{outline:3px solid rgba(239,139,69,.55);outline-offset:3px}
@media(max-width:900px){.intro-grid,.verify-layout,.help-layout,.reminder-grid{grid-template-columns:1fr}.intro-image{max-width:650px}.main-nav{gap:0}.main-nav a{padding:9px 7px;font-size:13px}}
@media(max-width:680px){body{font-size:15px}.container{padding:0 17px}.nav-wrap{min-height:65px}.brand{font-size:16px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:65px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 17px;flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:12px}.nav-cta{text-align:center}.intro{padding:56px 0 48px}h1{font-size:38px}.intro p{font-size:16px}.intro-image img{height:235px}main section{padding:58px 0}.issue-grid,.reminder-list{grid-template-columns:1fr}.verify-row{grid-template-columns:1fr;gap:3px}.closing-inner{display:block}.closing .btn{width:100%;margin-top:20px}.fixed-actions{left:10px;right:10px;bottom:10px;transform:none;justify-content:space-between}.fixed-actions a{padding:10px 9px;font-size:12px}.site-footer{padding-bottom:125px}.footer-grid{grid-template-columns:1fr;gap:24px}}