/* roulang page: index */
:root{
  --primary:#167b6b;--primary-dark:#105f54;--deep:#17312d;--accent:#f28b57;
  --bg:#f7f8f5;--mint:#eaf4ef;--peach:#fff1e9;--card:#fff;
  --text:#36433f;--muted:#708079;--line:#dce5e0;--radius:18px;
  --shadow:0 14px 40px rgba(23,49,45,.08);--max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.8;font-size:16px}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;border:0}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.site-header{height:78px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.header-inner{height:100%;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;min-width:225px}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
.logo strong{display:block;color:var(--deep);font-size:18px;line-height:1.15}
.logo small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:5px;flex:1}
.main-nav a{padding:8px 12px;border-radius:9px;color:#53645e;font-size:14px;transition:.2s}
.main-nav a:hover,.main-nav a.active{color:var(--primary);background:var(--mint)}
.header-action,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:11px;font-weight:700;transition:.2s}
.header-action,.btn-primary{background:var(--primary);color:#fff}
.header-action:hover,.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
.btn-secondary{background:#fff;border:1px solid var(--primary);color:var(--primary)}
.btn-secondary:hover{background:var(--mint)}
.menu-toggle{display:none;background:var(--mint);color:var(--deep);width:44px;height:42px;border-radius:10px;font-size:21px}
.hero{padding:76px 0 62px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.eyebrow,.section-kicker{color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
.hero h1{font-size:clamp(36px,4.3vw,58px);line-height:1.2;color:var(--deep);margin:14px 0 20px;letter-spacing:-.04em}
.hero h1 em{color:var(--primary);font-style:normal}
.hero-copy{font-size:18px;color:var(--muted);max-width:620px}
.hero-actions{display:flex;gap:12px;margin:28px 0 24px;flex-wrap:wrap}
.hero-notes{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.hero-notes span:before{content:"✓";color:var(--primary);font-weight:800;margin-right:6px}
.device-stage{min-height:390px;position:relative;background:var(--mint);border-radius:34px;padding:34px;display:flex;align-items:center;justify-content:center}
.device-stage:before{content:"";position:absolute;width:260px;height:260px;border:1px dashed rgba(22,123,107,.3);border-radius:50%}
.phone{position:relative;width:205px;height:355px;background:var(--deep);border:8px solid #102520;border-radius:30px;padding:14px;box-shadow:0 20px 35px rgba(23,49,45,.22);z-index:2}
.phone-top{height:9px;width:70px;background:#50635e;border-radius:10px;margin:0 auto 19px}
.phone-screen{height:290px;background:#f7fbf8;border-radius:18px;padding:14px}
.screen-head{height:48px;border-radius:12px;background:var(--primary);color:white;padding:8px 10px;font-size:12px}
.screen-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:12px}
.screen-grid i{height:62px;border-radius:10px;background:linear-gradient(135deg,#d9eee5,#f6c9ac);display:block}
.screen-line{height:8px;background:#dce8e2;border-radius:8px;margin-top:14px}
.screen-line.short{width:60%}
.float-card{position:absolute;z-index:3;background:#fff;border:1px solid var(--line);border-radius:16px;padding:15px 18px;box-shadow:var(--shadow)}
.float-card.status{right:25px;top:46px}
.float-card.version{left:25px;bottom:46px}
.float-card b{display:block;color:var(--deep);font-size:14px}
.float-card span{font-size:12px;color:var(--muted)}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-right:6px}
.section{padding:88px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
.section h2{font-size:clamp(27px,3vw,36px);line-height:1.3;color:var(--deep);margin-top:7px}
.section-lead{color:var(--muted);max-width:570px}
.quick-bar{display:grid;grid-template-columns:1.15fr 1fr 1fr 1.05fr;gap:12px;padding-bottom:25px}
.quick-item{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px 20px;display:flex;align-items:center;gap:14px;transition:.2s}
.quick-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#b9d8ce}
.quick-icon{width:40px;height:40px;border-radius:12px;background:var(--mint);display:grid;place-items:center;color:var(--primary);font-weight:800}
.quick-item strong{display:block;color:var(--deep);font-size:15px}
.quick-item small{display:block;color:var(--muted);font-size:12px}
.arrow{margin-left:auto;color:var(--primary);font-size:20px}
.sim-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:18px}
.feature-card{background:var(--deep);color:white;border-radius:24px;padding:32px;min-height:330px;position:relative;overflow:hidden}
.feature-card:after{content:"PG";position:absolute;right:-18px;bottom:-50px;font-size:190px;line-height:1;font-weight:900;color:rgba(255,255,255,.06)}
.feature-card h3{font-size:28px;max-width:310px;line-height:1.35;margin:18px 0 12px;position:relative;z-index:1}
.feature-card p{color:#c4d6d0;max-width:370px;position:relative;z-index:1}
.feature-card .btn{margin-top:25px;position:relative;z-index:1}
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.info-card,.download-card,.guide-card,.article-item,.faq-item,.theme-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.2s}
.info-card:hover,.article-item:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card-tag,.label{display:inline-flex;background:var(--mint);color:var(--primary);border-radius:20px;padding:3px 10px;font-size:12px;font-weight:700}
.info-card h3{font-size:18px;color:var(--deep);margin:14px 0 8px}
.info-card p{color:var(--muted);font-size:14px}
.meta{color:var(--muted);font-size:12px;margin-top:15px;display:flex;justify-content:space-between;gap:8px}
.download-section{background:var(--peach)}
.download-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px;align-items:stretch}
.download-visual{background:var(--deep);border-radius:25px;padding:32px;color:#fff;position:relative;overflow:hidden}
.download-visual h3{font-size:27px;line-height:1.35;margin:20px 0 12px}
.download-visual p{color:#c5d7d1}
.step-mini{display:flex;gap:12px;align-items:center;margin-top:25px;color:#dceae5;font-size:14px}
.step-mini b{width:30px;height:30px;border:1px solid #7ca89d;border-radius:50%;display:grid;place-items:center}
.download-card{padding:32px}
.download-card h3{color:var(--deep);font-size:24px;margin-bottom:8px}
.platforms{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0}
.platform{border:1px solid var(--line);border-radius:14px;padding:15px}
.platform strong{color:var(--deep);display:block}
.platform span{font-size:12px;color:var(--muted)}
.download-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.download-foot small{color:var(--muted);font-size:12px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.step{padding:22px 25px;border-top:2px solid #b9d8ce;position:relative}
.step:not(:last-child):after{content:"→";position:absolute;right:-7px;top:10px;color:var(--primary);background:var(--bg);padding:0 3px;font-size:20px}
.step-num{color:var(--accent);font-size:26px;font-weight:800}
.step h3{font-size:17px;color:var(--deep);margin:6px 0}
.step p{font-size:14px;color:var(--muted)}
.strip{display:flex;gap:16px;overflow:auto;padding:8px 2px 18px;scrollbar-width:thin}
.experience-card{min-width:190px;height:245px;border-radius:20px;padding:20px;background:linear-gradient(150deg,#e4f2eb,#f8d8c3);display:flex;flex-direction:column;justify-content:end;position:relative;overflow:hidden}
.experience-card:nth-child(2n){background:linear-gradient(150deg,#d9ece7,#cbd8ed)}
.experience-card:before{content:"PGSoft";position:absolute;top:20px;left:20px;font-weight:800;color:rgba(23,49,45,.3);font-size:25px}
.experience-card h3{color:var(--deep);font-size:18px}
.experience-card p{font-size:13px;color:#52635d}
.guide-layout{display:grid;grid-template-columns:250px 1fr;gap:25px}
.guide-menu{list-style:none;border-left:2px solid #c9ded6}
.guide-menu li{padding:11px 0 11px 18px;color:var(--muted);border-left:3px solid transparent}
.guide-menu li:first-child{border-left-color:var(--primary);color:var(--primary);font-weight:700}
.guide-card{background:var(--mint);padding:34px}
.guide-card h3{font-size:25px;color:var(--deep);margin-bottom:10px}
.guide-points{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
.guide-points div{background:#fff;border-radius:12px;padding:14px;font-size:14px;color:var(--muted)}
.news-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:40px}
.news-side{position:sticky;top:110px;height:max-content}
.news-side p{color:var(--muted);margin:13px 0 22px}
.news-list{display:grid;gap:12px}
.article-item{display:grid;grid-template-columns:115px 1fr;gap:20px;padding:18px}
.article-thumb{border-radius:13px;background:var(--mint);min-height:92px;display:grid;place-items:center;color:var(--primary);font-weight:800}
.article-item h3{font-size:17px;color:var(--deep);line-height:1.45}
.article-item p{font-size:13px;color:var(--muted);margin-top:4px}
.timeline{border-left:2px solid #c8ddd5;margin-left:15px;padding-left:28px}
.timeline-item{position:relative;padding:0 0 28px}
.timeline-item:before{content:"";position:absolute;left:-36px;top:7px;width:12px;height:12px;background:var(--primary);border:3px solid var(--mint);border-radius:50%}
.timeline-item strong{color:var(--primary);font-size:14px}
.timeline-item h3{font-size:19px;color:var(--deep);margin:5px 0}
.timeline-item p{color:var(--muted);font-size:14px}
.adapt-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.adapt-card{padding:30px;border-radius:22px;background:var(--mint);border:1px solid #d2e5dd}
.adapt-card.apple{background:#fff}
.adapt-card h3{font-size:22px;color:var(--deep);margin:12px 0 6px}
.adapt-card p{color:var(--muted);font-size:14px}
.scene-tabs{display:flex;gap:8px;overflow:auto;margin-bottom:20px}
.scene-tabs span{white-space:nowrap;padding:9px 15px;border:1px solid var(--line);border-radius:30px;color:var(--muted);font-size:13px}
.scene-tabs span:first-child{background:var(--primary);border-color:var(--primary);color:#fff}
.theme-panel{display:grid;grid-template-columns:1fr 1fr;gap:25px;background:#fff}
.theme-panel h3{font-size:22px;color:var(--deep);margin-bottom:8px}
.theme-panel p{color:var(--muted)}
.notice{background:var(--peach);border:1px solid #f5d4c1;border-radius:15px;padding:20px 24px;display:flex;gap:20px;align-items:center}
.notice strong{color:var(--deep);white-space:nowrap}
.notice span{color:#76645b;font-size:14px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item summary{cursor:pointer;color:var(--deep);font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:15px}
.faq-item summary:after{content:"+";color:var(--primary);font-size:20px}
.faq-item[open] summary:after{content:"−"}
.faq-item p{color:var(--muted);font-size:14px;margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.cta{background:var(--deep);color:white;border-radius:26px;padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px;position:relative;overflow:hidden}
.cta:after{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:12%;top:-80px}
.cta h2{color:#fff;position:relative;z-index:1}
.cta p{color:#bdd0c9;margin-top:8px;position:relative;z-index:1}
.cta-actions{display:flex;gap:10px;position:relative;z-index:1;flex-shrink:0}
.site-footer{background:#132b27;color:#c5d5d0;padding:55px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:35px}
.site-footer h3{color:#fff;font-size:17px;margin-bottom:13px}
.site-footer p,.site-footer a{font-size:13px;color:#a9bfba}
.site-footer a{display:block;margin:6px 0;transition:.2s}
.site-footer a:hover{color:#fff}
.footer-brand strong{font-size:22px;color:#fff;display:block;margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;font-size:12px;color:#8fa9a2;display:flex;justify-content:space-between;gap:15px}
:focus-visible{outline:3px solid rgba(242,139,87,.6);outline-offset:3px}
@media(max-width:1024px){
 .main-nav{gap:0}.main-nav a{padding:8px 7px;font-size:13px}.header-action{padding:0 13px}
 .hero-grid{gap:35px}.quick-bar{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:767px){
 .container{width:min(100% - 28px,var(--max))}
 .site-header{height:68px}.logo{min-width:0}.logo strong{font-size:16px}.logo small{display:none}.logo-mark{width:34px;height:34px}
 .main-nav,.header-action{display:none}.menu-toggle{display:block;margin-left:auto}
 .hero{padding:52px 0 35px}.hero-grid,.download-layout,.news-layout{grid-template-columns:1fr}.hero h1{font-size:38px}.hero-copy{font-size:16px}
 .device-stage{min-height:330px;padding:25px}.phone{transform:scale(.82)}.float-card.status{right:10px;top:25px}.float-card.version{left:10px;bottom:25px}
 .section{padding:58px 0}.section-head{display:block}.section-head .section-lead{margin-top:12px}
 .sim-grid,.adapt-grid,.theme-panel,.guide-layout{grid-template-columns:1fr}.card-grid,.faq-grid{grid-template-columns:1fr}
 .feature-card{min-height:270px}.steps{grid-template-columns:1fr 1fr}.step{padding:15px 12px}.step:not(:last-child):after{display:none}
 .guide-menu{display:flex;overflow:auto;border-left:0;border-bottom:2px solid #c9ded6}.guide-menu li{white-space:nowrap;padding:8px 12px;border-left:0;border-bottom:3px solid transparent}.guide-menu li:first-child{border-bottom-color:var(--primary)}
 .guide-points{grid-template-columns:1fr}.news-side{position:static}.article-item{grid-template-columns:78px 1fr;gap:12px}.article-thumb{min-height:76px}
 .cta{display:block;padding:32px 25px}.cta-actions{margin-top:22px;flex-wrap:wrap}.cta-actions .btn{flex:1}
 .notice{display:block}.notice strong{display:block;margin-bottom:5px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
}
@media(max-width:520px){
 .hero-actions .btn{width:100%}.quick-bar{grid-template-columns:1fr}.platforms{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{border-top:1px solid #c9ded6}
 .section h2{font-size:28px}.download-card{padding:23px}.footer-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --primary:#167b6b;--primary-dark:#105f54;--deep:#17312d;--accent:#f28b57;
  --bg:#f7f8f5;--mint:#eaf4ef;--peach:#fff1e9;--card:#fff;
  --text:#36433f;--muted:#708079;--line:#dce5e0;--radius:18px;
  --shadow:0 14px 40px rgba(23,49,45,.08);--max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.8;font-size:16px}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block} button,input{font:inherit} button{cursor:pointer;border:0}
a:focus-visible,button:focus-visible{outline:3px solid rgba(22,123,107,.32);outline-offset:3px}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.site-header{height:78px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.header-inner{height:100%;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;min-width:225px}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;box-shadow:0 7px 16px rgba(22,123,107,.2)}
.logo strong{display:block;color:var(--deep);font-size:18px;line-height:1.15}
.logo small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:5px;flex:1}
.main-nav a{padding:8px 12px;border-radius:9px;color:#53645e;font-size:14px;transition:.2s}
.main-nav a:hover,.main-nav a.active{color:var(--primary);background:var(--mint)}
.header-action,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:11px;font-weight:700;transition:.2s;white-space:nowrap}
.header-action,.btn-primary{background:var(--primary);color:#fff}
.header-action:hover,.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);color:#fff}
.btn-secondary{background:#fff;border:1px solid var(--primary);color:var(--primary)}
.btn-secondary:hover{background:var(--mint);color:var(--primary)}
.menu-toggle{display:none;background:var(--mint);color:var(--deep);width:44px;height:42px;border-radius:10px;font-size:21px}
.article-top{padding:42px 0 30px;background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px;margin-bottom:25px}
.breadcrumb span:not(:last-child):after{content:"/";margin-left:8px;color:#adbbb5}
.article-category{display:inline-flex;align-items:center;gap:7px;padding:5px 11px;border-radius:99px;background:var(--mint);color:var(--primary);font-size:12px;font-weight:800}
.article-title{max-width:900px;color:var(--deep);font-size:clamp(32px,4.2vw,48px);line-height:1.3;letter-spacing:-.035em;margin:14px 0 17px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--muted);font-size:13px}
.article-meta span{display:flex;align-items:center;gap:6px}
.article-meta i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section{padding:54px 0}
.article-layout{width:min(820px,100%);margin:auto}
.summary-box{position:relative;background:var(--mint);border:1px solid #cfe3da;border-radius:20px;padding:28px 30px 27px;color:#40534c;font-size:17px}
.summary-box:before{content:"“";position:absolute;left:18px;top:-14px;font-size:74px;line-height:1;color:var(--primary);font-family:Georgia,serif}
.summary-box p{position:relative;margin:0}
.reading-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:clamp(24px,5vw,52px);box-shadow:0 12px 35px rgba(23,49,45,.04)}
.article-content{font-size:17px;line-height:1.95;color:#3d4b46}
.article-content>*:first-child{margin-top:0}
.article-content h2{color:var(--deep);font-size:28px;line-height:1.4;margin:43px 0 17px}
.article-content h3{color:var(--deep);font-size:21px;line-height:1.5;margin:31px 0 12px}
.article-content p{margin:0 0 20px}
.article-content ul,.article-content ol{padding-left:1.45em;margin:0 0 22px}
.article-content li{margin:8px 0}
.article-content blockquote{margin:28px 0;padding:18px 22px;border-left:4px solid var(--primary);background:var(--mint);color:#476057;border-radius:0 12px 12px 0}
.article-content img{border-radius:15px;margin:25px auto;border:1px solid var(--line)}
.article-content table{width:100%;border-collapse:collapse;margin:25px 0;font-size:14px;overflow:hidden;border-radius:12px;border-style:hidden;box-shadow:0 0 0 1px var(--line)}
.article-content td,.article-content th{padding:12px;border:1px solid var(--line);text-align:left}
.article-content th{background:var(--mint);color:var(--deep)}
.empty-content{text-align:center;padding:38px 20px}
.empty-content h2{color:var(--deep);font-size:25px;margin-bottom:12px}
.info-strip{background:var(--peach);border:1px solid #f5d6c5;border-radius:20px;padding:26px 28px}
.info-strip h2{font-size:22px;color:var(--deep);margin:0 0 15px}
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px 24px;padding:0;margin:0;list-style:none}
.check-list li{position:relative;padding-left:25px;color:#4e5d57;font-size:14px}
.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--primary);font-weight:900}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-kicker{font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--primary)}
.section-head h2{color:var(--deep);font-size:30px;line-height:1.35;margin:5px 0 0}
.section-lead{max-width:480px;color:var(--muted);font-size:14px;margin:0}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{background:#fff;border:1px solid var(--line);padding:23px;border-radius:var(--radius);display:flex;flex-direction:column;min-height:215px;transition:.2s}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9d8ce}
.label{display:inline-flex;align-self:flex-start;background:var(--mint);color:var(--primary);padding:3px 10px;border-radius:18px;font-size:12px;font-weight:800}
.related-card h3{font-size:18px;line-height:1.5;color:var(--deep);margin:14px 0 9px}
.related-card p{font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 15px}
.card-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:auto;color:var(--muted);font-size:12px}
.text-link{font-weight:800;color:var(--primary);font-size:13px}
.text-link:hover{color:var(--primary-dark)}
.help-panel{background:var(--deep);border-radius:24px;padding:38px 42px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;color:#fff;position:relative;overflow:hidden}
.help-panel:after{content:"PG";position:absolute;right:28px;bottom:-62px;color:rgba(255,255,255,.06);font-size:170px;font-weight:900;line-height:1}
.help-panel h2{font-size:29px;line-height:1.35;margin:0 0 9px;position:relative;z-index:1}
.help-panel p{margin:0;color:#bfd1cb;max-width:620px;font-size:14px;position:relative;z-index:1}
.help-actions{display:flex;gap:12px;position:relative;z-index:1}
.help-panel .btn-secondary{background:transparent;border-color:#9cc8bb;color:#fff}
.help-panel .btn-secondary:hover{background:rgba(255,255,255,.1)}
.site-footer{background:var(--deep);color:#d5e1dd;padding:62px 0 20px;margin-top:30px}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:38px}
.footer-brand strong{font-size:22px;color:#fff}
.footer-brand p{font-size:13px;line-height:1.7;margin:10px 0 0;color:#b7cbc4}
.site-footer h3{font-size:15px;color:#fff;margin:0 0 13px}
.site-footer a{display:block;font-size:13px;color:#c8d8d3;margin:8px 0;transition:.2s}
.site-footer a:hover{color:#fff;transform:translateX(2px)}
.site-footer p{font-size:13px;color:#b7cbc4;margin:0;line-height:1.8}
.footer-bottom{margin-top:46px;padding-top:18px;border-top:1px solid rgba(220,229,224,.18);display:flex;justify-content:space-between;gap:18px;color:#a9beb7;font-size:12px}
@media(max-width:1024px){
  .header-inner{gap:14px}.logo{min-width:190px}.main-nav a{padding:8px 8px;font-size:13px}
  .related-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .container{width:min(100% - 28px,var(--max))}.site-header{height:68px}.header-inner{justify-content:space-between}
  .logo{min-width:0}.logo strong{font-size:16px}.logo small{font-size:10px}
  .menu-toggle{display:grid;place-items:center}.header-action{display:none}
  .main-nav{display:none;position:absolute;left:0;right:0;top:68px;padding:14px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
  .article-top{padding:31px 0 25px}.article-title{font-size:31px}.section{padding:42px 0}
  .summary-box{padding:24px 22px;font-size:16px}.reading-card{border-radius:17px}.article-content{font-size:16px}.article-content h2{font-size:25px}
  .check-list{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}.help-panel{grid-template-columns:1fr;padding:30px 25px}.help-actions{flex-wrap:wrap}
  .footer-grid{gap:30px}.footer-bottom{flex-direction:column;gap:5px}
}
@media(max-width:520px){
  .logo small{display:none}.article-title{font-size:28px}.article-meta{gap:7px 14px}.section-head{display:block}.section-head h2{font-size:26px}.section-lead{margin-top:9px}
  .info-strip{padding:22px 19px}.help-actions{display:grid;grid-template-columns:1fr}.help-actions .btn{width:100%}.footer-grid{grid-template-columns:1fr}
}

/* roulang page: category1 */
:root{
      --primary:#167b6b;--primary-dark:#105f54;--deep:#17312d;--accent:#f28b57;
      --bg:#f7f8f5;--mint:#eaf4ef;--peach:#fff1e9;--card:#fff;
      --text:#36433f;--muted:#708079;--line:#dce5e0;--radius:18px;
      --shadow:0 14px 40px rgba(23,49,45,.08);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    img{max-width:100%;display:block}
    .container{width:min(var(--max),calc(100% - 40px));margin:auto}
    .site-header{height:78px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:225px}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;box-shadow:0 7px 16px rgba(22,123,107,.2)}
    .logo strong{display:block;color:var(--deep);font-size:18px;line-height:1.15}
    .logo small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
    .main-nav{display:flex;align-items:center;gap:5px;flex:1}
    .main-nav a{padding:8px 12px;border-radius:9px;color:#53645e;font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:var(--mint)}
    .header-action,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:11px;font-weight:700;transition:.2s;white-space:nowrap}
    .header-action,.btn-primary{background:var(--primary);color:#fff}
    .header-action:hover,.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
    .btn-secondary{background:#fff;border:1px solid var(--primary);color:var(--primary)}
    .btn-secondary:hover{background:var(--mint);color:var(--primary)}
    .menu-toggle{display:none;background:var(--mint);color:var(--deep);width:44px;height:42px;border-radius:10px;font-size:21px}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:25px;margin-bottom:30px}
    .section-kicker{color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
    .section h2{font-size:clamp(26px,3vw,35px);line-height:1.35;color:var(--deep);margin:6px 0 0;letter-spacing:-.02em}
    .section-lead{color:var(--muted);max-width:540px;margin:0}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:20px}
    .breadcrumb span{margin:0 8px;color:#a6b2ad}
    .channel-hero{padding:55px 0 46px;background:linear-gradient(125deg,var(--mint) 0%,#f5f8f4 52%,var(--peach) 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .channel-hero:before{content:"";position:absolute;width:340px;height:340px;border:1px solid rgba(22,123,107,.16);border-radius:50%;right:7%;top:-190px}
    .channel-hero:after{content:"";position:absolute;width:170px;height:170px;background:rgba(242,139,87,.12);border-radius:34px;transform:rotate(28deg);right:17%;bottom:-110px}
    .channel-heading{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;align-items:end;gap:44px}
    .channel-heading h1{font-size:clamp(34px,4.5vw,52px);line-height:1.18;letter-spacing:-.045em;color:var(--deep);margin:10px 0 16px}
    .channel-heading p{max-width:720px;color:#53645e;font-size:17px;margin:0}
    .channel-tags{display:flex;flex-wrap:wrap;gap:9px;justify-content:flex-end}
    .tag,.card-tag,.label{display:inline-flex;align-items:center;width:max-content;background:rgba(255,255,255,.76);border:1px solid #cfe0d9;color:var(--primary);border-radius:20px;padding:4px 11px;font-size:12px;font-weight:750}
    .category-nav{padding:27px 0;background:#fff;border-bottom:1px solid var(--line)}
    .category-links{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .category-links a{padding:15px 17px;border:1px solid var(--line);border-radius:14px;background:var(--bg);font-size:14px;font-weight:700;color:#53645e;transition:.2s}
    .category-links a:hover{border-color:#afd1c6;background:var(--mint);color:var(--primary);transform:translateY(-2px)}
    .category-links a.active{background:var(--primary);border-color:var(--primary);color:#fff}
    .spotlight{display:grid;grid-template-columns:.9fr 1.1fr;overflow:hidden;background:var(--deep);border-radius:24px;color:#fff;box-shadow:var(--shadow)}
    .spotlight-art{padding:34px;min-height:350px;background:linear-gradient(145deg,#246f63,#17312d);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
    .spotlight-art:before{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(255,255,255,.24);border-radius:50%}
    .spotlight-art:after{content:"PG";position:absolute;font-size:178px;font-weight:900;line-height:1;color:rgba(255,255,255,.07);bottom:-34px;right:-12px}
    .sim-symbol{position:relative;z-index:1;width:158px;height:210px;border:8px solid rgba(255,255,255,.9);border-radius:26px;padding:14px;background:#f7f8f5;box-shadow:0 20px 35px rgba(0,0,0,.19)}
    .sim-symbol b{display:block;background:var(--primary);border-radius:11px;padding:8px;color:#fff;font-size:13px}
    .sim-symbol i{display:block;height:38px;margin-top:10px;border-radius:9px;background:linear-gradient(120deg,#d6ece2,#f6c8ae)}
    .sim-symbol i:nth-child(3){background:linear-gradient(120deg,#b7d9d1,#e8efe1)}
    .spotlight-copy{padding:43px 46px;display:flex;flex-direction:column;justify-content:center}
    .spotlight-copy h2{font-size:clamp(25px,3vw,36px);color:#fff;margin:12px 0}
    .spotlight-copy p{color:#c8d9d4;margin:0}
    .spotlight-copy ul{padding:0;margin:22px 0 27px;list-style:none;display:grid;gap:9px}
    .spotlight-copy li{font-size:14px;color:#e0ebe7}
    .spotlight-copy li:before{content:"✓";color:#8bd5c2;font-weight:900;margin-right:9px}
    .spotlight-copy .btn-secondary{color:#fff;border-color:#80b9ad;background:transparent;align-self:flex-start}
    .spotlight-copy .btn-secondary:hover{background:rgba(255,255,255,.12)}
    .content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.22s;position:relative;overflow:hidden}
    .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bbd8ce}
    .info-card:after{content:"";width:48px;height:48px;border-radius:16px;background:var(--mint);position:absolute;right:-12px;top:-12px}
    .info-card h3{font-size:19px;color:var(--deep);margin:15px 0 9px;position:relative;z-index:1}
    .info-card p{font-size:14px;color:var(--muted);margin:0;min-height:76px;position:relative;z-index:1}
    .meta{color:var(--muted);font-size:12px;margin-top:17px;padding-top:14px;border-top:1px solid #edf1ee;display:flex;justify-content:space-between;gap:8px}
    .card-link{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-weight:750;font-size:14px;margin-top:14px}
    .card-link:after{content:"→";transition:.2s}
    .card-link:hover:after{transform:translateX(4px)}
    .reading-band{background:var(--peach)}
    .path-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:stretch}
    .path-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px}
    .path-list h3{font-size:20px;color:var(--deep);margin:0 0 16px}
    .path-item{display:flex;gap:13px;padding:13px 0;border-bottom:1px solid #e9eeeb}
    .path-item:last-child{border-bottom:0}
    .path-number{flex:0 0 29px;height:29px;border-radius:9px;background:var(--mint);color:var(--primary);font-size:13px;font-weight:800;display:grid;place-items:center}
    .path-item b{display:block;color:var(--deep);font-size:15px;line-height:1.45}
    .path-item span{display:block;color:var(--muted);font-size:13px;line-height:1.65;margin-top:2px}
    .path-feature{background:var(--deep);border-radius:var(--radius);padding:35px;color:#fff;position:relative;overflow:hidden}
    .path-feature:before{content:"体验";position:absolute;right:-20px;bottom:-60px;font-size:160px;font-weight:800;color:rgba(255,255,255,.05)}
    .path-feature h3{font-size:28px;line-height:1.35;position:relative;margin:0 0 13px}
    .path-feature p{color:#c5d7d1;position:relative;max-width:480px;margin-bottom:23px}
    .path-feature .btn{position:relative}
    .compat-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compat-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px}
    .compat-panel.mint{background:linear-gradient(145deg,#fff 20%,var(--mint))}
    .compat-panel.peach{background:linear-gradient(145deg,#fff 20%,var(--peach))}
    .compat-icon{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:#fff;background:var(--primary);font-size:20px;font-weight:800;margin-bottom:18px}
    .peach .compat-icon{background:var(--accent)}
    .compat-panel h3{color:var(--deep);font-size:23px;margin:0 0 7px}
    .compat-panel p{color:var(--muted);font-size:14px;margin:0 0 17px}
    .check-list{list-style:none;padding:0;margin:0}
    .check-list li{padding:8px 0;border-top:1px solid rgba(105,130,121,.16);font-size:14px}
    .check-list li b{color:var(--deep)}
    .check-list li:before{content:"•";color:var(--primary);font-weight:900;margin-right:9px}
    .compare-wrap{overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff}
    .compare-table{width:100%;border-collapse:collapse}
    .compare-table th,.compare-table td{padding:18px 21px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
    .compare-table th{background:var(--mint);color:var(--deep);font-size:13px}
    .compare-table tr:last-child td{border-bottom:0}
    .compare-table td:first-child{font-weight:750;color:var(--deep)}
    .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .article-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.2s}
    .article-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .article-item h3{font-size:18px;line-height:1.5;color:var(--deep);margin:14px 0 8px}
    .article-item p{font-size:14px;color:var(--muted);margin:0}
    .faq-area{background:var(--mint)}
    .faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:44px}
    .faq-layout h2{font-size:clamp(27px,3vw,36px);color:var(--deep);margin:8px 0 14px}
    .faq-layout>div>p{color:var(--muted)}
    .faq-list{display:grid;gap:11px}
    .faq-item{padding:0;background:#fff;overflow:hidden}
    .faq-question{width:100%;min-height:64px;padding:17px 20px;background:transparent;color:var(--deep);font-weight:750;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:15px}
    .faq-question span{font-size:23px;color:var(--primary);font-weight:400;transition:.2s}
    .faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px;border-top:1px solid #e8efeb}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span{transform:rotate(45deg)}
    .bottom-cta{padding:74px 0}
    .cta-box{background:var(--deep);border-radius:25px;padding:45px 52px;color:#fff;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-box:after{content:"PG";position:absolute;right:26px;bottom:-76px;font-size:190px;line-height:1;font-weight:900;color:rgba(255,255,255,.05)}
    .cta-box h2{font-size:clamp(27px,3vw,37px);margin:0 0 9px;position:relative}
    .cta-box p{color:#c4d7d0;max-width:620px;margin:0;position:relative}
    .cta-actions{display:flex;gap:11px;flex-wrap:wrap;position:relative;z-index:1}
    .cta-actions .btn-primary{background:#2a9783}
    .cta-actions .btn-primary:hover{background:#38a58f}
    .cta-actions .btn-secondary{color:#fff;border-color:#83b9ad;background:transparent}
    .cta-actions .btn-secondary:hover{background:rgba(255,255,255,.1)}
    .site-footer{background:var(--deep);color:#d5e3de;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr .9fr;gap:42px}
    .footer-brand strong{color:#fff;font-size:22px}
    .footer-brand p,.site-footer p{font-size:13px;line-height:1.8;color:#bcd0c9;margin:7px 0 0}
    .site-footer h3{font-size:14px;color:#fff;margin:4px 0 14px}
    .site-footer a{display:block;color:#bcd0c9;font-size:13px;margin:8px 0;transition:.2s}
    .site-footer a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{border-top:1px solid rgba(220,229,224,.18);margin-top:38px;padding-top:19px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#aac0b8}
    :focus-visible{outline:3px solid rgba(242,139,87,.65);outline-offset:3px}
    @media (max-width:1100px){
      .header-inner{gap:15px}.logo{min-width:190px}.main-nav a{padding:8px 9px;font-size:13px}
      .channel-heading{grid-template-columns:1fr}.channel-tags{justify-content:flex-start}
      .content-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:850px){
      .site-header{height:70px}.header-inner{justify-content:space-between}.main-nav,.header-action{display:none}.menu-toggle{display:grid;place-items:center}
      .main-nav.mobile-open{display:flex;position:absolute;left:0;right:0;top:69px;padding:16px 20px 20px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.mobile-open a{padding:11px 13px}.channel-hero{padding:40px 0}.category-links{grid-template-columns:repeat(2,1fr)}
      .spotlight,.path-layout,.faq-layout{grid-template-columns:1fr}.spotlight-art{min-height:250px}.spotlight-copy{padding:32px}
      .compat-grid{grid-template-columns:1fr}.cta-box{padding:38px;display:block}.cta-actions{margin-top:24px}
    }
    @media (max-width:600px){
      .container{width:min(100% - 28px,var(--max))}.section{padding:57px 0}.section-head{display:block;margin-bottom:23px}.section-lead{margin-top:11px}
      .logo strong{font-size:16px}.logo small{font-size:10px}.logo{min-width:0}.channel-heading h1{font-size:35px}
      .category-links{grid-template-columns:1fr}.content-grid,.article-grid{grid-template-columns:1fr}.spotlight-copy{padding:27px 22px}.spotlight-art{padding:25px;min-height:220px}
      .path-feature{padding:28px}.compat-panel{padding:24px}.compare-wrap{border:0;background:transparent;overflow:visible}.compare-table,.compare-table tbody,.compare-table tr,.compare-table td{display:block;width:100%}
      .compare-table thead{display:none}.compare-table tr{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}.compare-table td{border-bottom:1px solid #edf0ee;padding:12px 16px;font-size:13px}.compare-table td:last-child{border-bottom:0}.compare-table td:before{content:attr(data-label);display:block;font-size:11px;color:var(--muted);margin-bottom:2px}
      .compare-table td:first-child:before{display:none}.footer-grid{grid-template-columns:1fr;gap:24px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}.btn{width:100%}.cta-actions{display:grid;grid-template-columns:1fr}.cta-box{padding:31px 24px}
    }

/* roulang page: category2 */
:root{
      --primary:#167b6b;--primary-dark:#105f54;--deep:#17312d;--accent:#f28b57;
      --bg:#f7f8f5;--mint:#eaf4ef;--peach:#fff1e9;--card:#fff;
      --text:#36433f;--muted:#708079;--line:#dce5e0;--radius:18px;
      --shadow:0 14px 40px rgba(23,49,45,.08);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid rgba(22,123,107,.3);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 40px));margin:auto}
    .site-header{height:78px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:225px}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px;letter-spacing:-.08em}
    .logo strong{display:block;color:var(--deep);font-size:18px;line-height:1.15}
    .logo small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
    .main-nav{display:flex;align-items:center;gap:5px;flex:1}
    .main-nav a{padding:8px 12px;border-radius:9px;color:#53645e;font-size:14px;white-space:nowrap;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:var(--mint)}
    .header-action,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:11px;font-weight:700;transition:.2s ease}
    .header-action,.btn-primary{background:var(--primary);color:#fff}
    .header-action:hover,.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 20px rgba(22,123,107,.18)}
    .btn-secondary{background:#fff;border:1px solid var(--primary);color:var(--primary)}
    .btn-secondary:hover{background:var(--mint);color:var(--primary)}
    .menu-toggle{display:none;background:var(--mint);color:var(--deep);width:44px;height:42px;border-radius:10px;font-size:21px}
    main{overflow:hidden}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-kicker{display:block;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
    h1,h2,h3,p{margin-top:0}
    h1,h2,h3{color:var(--deep)}
    .section h2{font-size:clamp(27px,3vw,36px);line-height:1.3;margin:7px 0 0;letter-spacing:-.025em}
    .section-lead{color:var(--muted);max-width:560px;margin:0}
    .crumbs{font-size:13px;color:var(--muted);display:flex;gap:9px;align-items:center;flex-wrap:wrap}
    .crumbs span{color:#a4afa9}
    .page-intro{padding:48px 0 58px;background:linear-gradient(112deg,var(--mint) 0%,#f8faf7 62%,var(--peach) 100%);border-bottom:1px solid var(--line);position:relative}
    .page-intro:after{content:"";position:absolute;width:270px;height:270px;border:1px solid rgba(22,123,107,.16);border-radius:50%;right:7%;top:-110px}
    .intro-inner{position:relative;z-index:1}
    .intro-grid{margin-top:24px;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:42px;align-items:end}
    .intro-grid h1{font-size:clamp(35px,4.4vw,51px);line-height:1.18;letter-spacing:-.045em;margin:12px 0 16px}
    .intro-grid p{font-size:17px;color:var(--muted);max-width:760px;margin:0}
    .intro-side{padding:20px 22px;background:rgba(255,255,255,.76);border:1px solid rgba(220,229,224,.9);border-radius:var(--radius)}
    .intro-side b{display:block;font-size:14px;color:var(--deep)}
    .intro-side span{font-size:13px;color:var(--muted)}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
    .label,.card-tag{display:inline-flex;align-items:center;background:var(--mint);color:var(--primary);border-radius:20px;padding:4px 11px;font-size:12px;font-weight:700}
    .label.peach{background:var(--peach);color:#be623b}
    .channel-wrap{padding:28px 0;background:#fff;border-bottom:1px solid var(--line)}
    .channel-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
    .channel-link{border:1px solid var(--line);border-radius:14px;padding:16px 17px;background:#fff;transition:.2s}
    .channel-link:hover{border-color:#acd3c7;transform:translateY(-2px);box-shadow:var(--shadow)}
    .channel-link.active{background:var(--deep);border-color:var(--deep);color:#fff}
    .channel-link strong{display:block;font-size:15px}
    .channel-link small{font-size:12px;color:var(--muted)}
    .channel-link.active small{color:#bfd5ce}
    .feature-guide{display:grid;grid-template-columns:.93fr 1.07fr;background:var(--deep);border-radius:25px;overflow:hidden;box-shadow:var(--shadow)}
    .guide-art{min-height:350px;background:linear-gradient(145deg,#d9eee5 0%,#9dcfc1 100%);padding:34px;position:relative;overflow:hidden}
    .guide-art:before{content:"01";position:absolute;right:20px;top:-52px;font-size:190px;line-height:1;font-weight:800;color:rgba(23,49,45,.13)}
    .guide-sheet{position:absolute;left:13%;right:12%;bottom:28px;background:#fff;border-radius:20px;padding:20px;box-shadow:0 18px 35px rgba(23,49,45,.16);transform:rotate(-4deg)}
    .guide-sheet b{display:block;color:var(--deep);font-size:17px}
    .guide-sheet span{display:block;color:var(--muted);font-size:13px;margin-top:5px}
    .guide-sheet i{display:block;height:9px;border-radius:20px;background:var(--mint);margin-top:13px}
    .guide-sheet i:nth-of-type(2){width:75%;background:#f8d1bc}
    .guide-copy{padding:42px;color:#fff;display:flex;flex-direction:column;justify-content:center}
    .guide-copy .card-tag{background:rgba(234,244,239,.14);color:#d8efe6}
    .guide-copy h2{color:#fff;font-size:clamp(27px,3.2vw,38px);line-height:1.3;margin:16px 0 13px}
    .guide-copy p{color:#c4d6d0;margin-bottom:20px}
    .point-list{list-style:none;padding:0;margin:0 0 25px}
    .point-list li{padding:8px 0;color:#e1eee9;border-bottom:1px solid rgba(255,255,255,.12);font-size:14px}
    .point-list li:before{content:"✓";color:#89d4be;font-weight:800;margin-right:10px}
    .btn-light{background:#fff;color:var(--primary);align-self:flex-start}
    .btn-light:hover{background:var(--mint);color:var(--primary);transform:translateY(-2px)}
    .guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.2s ease;position:relative}
    .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bbd9d0}
    .step-no{font-size:13px;color:var(--accent);font-weight:800;letter-spacing:.08em}
    .info-card h3{font-size:19px;line-height:1.45;margin:13px 0 9px}
    .info-card p{font-size:14px;color:var(--muted);margin-bottom:15px}
    .meta{padding-top:13px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:8px}
    .read-link{color:var(--primary);font-weight:700;font-size:14px}
    .read-link:hover{color:var(--primary-dark)}
    .read-link:after{content:" →";transition:.2s}
    .read-link:hover:after{margin-left:4px}
    .soft-panel{background:var(--peach)}
    .path-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:22px;align-items:stretch}
    .path-menu{background:var(--deep);border-radius:22px;padding:30px}
    .path-menu h2{color:#fff;font-size:28px;margin-bottom:8px}
    .path-menu p{color:#bfd3cc;font-size:14px;margin-bottom:20px}
    .path-menu ul{padding:0;margin:0;list-style:none}
    .path-menu li{color:#e5f0ec;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:14px}
    .path-menu li b{display:inline-grid;place-items:center;width:24px;height:24px;background:rgba(255,255,255,.12);border-radius:50%;font-size:11px;margin-right:8px}
    .path-checks{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .check-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:18px}
    .check-icon{width:42px;height:42px;background:var(--mint);color:var(--primary);border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:19px}
    .check-card h3{font-size:18px;margin:15px 0 7px}
    .check-card p{font-size:14px;color:var(--muted);margin:0}
    .checklist-wrap{display:grid;grid-template-columns:1.12fr .88fr;gap:24px;align-items:start}
    .checklist{background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px}
    .check-row{display:grid;grid-template-columns:46px 1fr auto;gap:15px;align-items:center;padding:17px 12px;border-bottom:1px solid var(--line)}
    .check-row:last-child{border:0}
    .check-row b{width:34px;height:34px;border-radius:10px;background:var(--mint);color:var(--primary);display:grid;place-items:center;font-size:13px}
    .check-row strong{display:block;color:var(--deep);font-size:15px}
    .check-row span{display:block;font-size:13px;color:var(--muted)}
    .state{font-size:12px;color:#a65a37;background:var(--peach);padding:4px 9px;border-radius:18px;white-space:nowrap}
    .notice-card{background:var(--deep);border-radius:22px;padding:32px;color:#fff}
    .notice-card h3{color:#fff;font-size:25px;line-height:1.35;margin-bottom:12px}
    .notice-card p{color:#c7d9d3;font-size:14px}
    .notice-card ul{list-style:none;padding:0;margin:20px 0 0}
    .notice-card li{font-size:14px;color:#e1eee9;padding:10px 0;border-top:1px solid rgba(255,255,255,.12)}
    .notice-card li:before{content:"•";color:#8fd4be;font-size:20px;vertical-align:-1px;margin-right:8px}
    .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .article-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.2s}
    .article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .article-cover{height:126px;background:linear-gradient(135deg,#d9eee5,#b8ddd0);position:relative}
    .article-card:nth-child(2) .article-cover{background:linear-gradient(135deg,#fff0e7,#f4c6af)}
    .article-card:nth-child(3) .article-cover{background:linear-gradient(135deg,#dce7ee,#b9d8d1)}
    .article-cover:after{content:"PG";position:absolute;right:17px;bottom:-25px;color:rgba(23,49,45,.16);font-size:92px;font-weight:900}
    .article-content{padding:20px}
    .article-content h3{font-size:18px;line-height:1.45;margin:12px 0 8px}
    .article-content p{font-size:14px;color:var(--muted);margin-bottom:15px}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:42px;align-items:start}
    .faq-intro{position:sticky;top:105px}
    .faq-intro h2{font-size:34px;line-height:1.3;margin:8px 0 14px}
    .faq-intro p{color:var(--muted);margin-bottom:22px}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}
    .faq-question{width:100%;background:#fff;color:var(--deep);text-align:left;font-weight:700;padding:19px 21px;display:flex;justify-content:space-between;align-items:center;gap:15px}
    .faq-question span:last-child{color:var(--primary);font-size:22px;line-height:1;transition:.25s}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .faq-answer{display:none;padding:0 21px 20px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .responsible{padding:28px 0}
    .responsible-inner{border:1px solid #f1d5c5;background:var(--peach);border-radius:18px;padding:21px 24px;display:flex;gap:17px;align-items:flex-start}
    .responsible-icon{width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:#fff;color:#c76d43;display:grid;place-items:center;font-weight:800}
    .responsible-inner strong{color:#81472f;display:block;font-size:15px}
    .responsible-inner p{color:#8e6655;font-size:14px;margin:3px 0 0}
    .cta-section{padding:78px 0 90px}
    .cta-box{background:var(--deep);border-radius:27px;color:#fff;padding:45px 48px;display:flex;justify-content:space-between;gap:30px;align-items:center;position:relative;overflow:hidden}
    .cta-box:after{content:"PG";position:absolute;font-size:210px;line-height:1;color:rgba(255,255,255,.045);right:4%;bottom:-78px;font-weight:900}
    .cta-box h2{color:#fff;font-size:clamp(27px,3vw,38px);margin:0 0 10px;position:relative;z-index:1}
    .cta-box p{color:#c5d8d2;max-width:600px;margin:0;position:relative;z-index:1}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}
    .site-footer{background:#17312d;color:#dce9e4;padding:62px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
    .footer-brand strong{color:#fff;font-size:22px}
    .footer-brand p,.site-footer p{color:#b9ccc6;font-size:13px;line-height:1.75;margin:7px 0}
    .site-footer h3{color:#fff;font-size:15px;margin:0 0 13px}
    .site-footer a{display:block;color:#b9ccc6;font-size:13px;margin:8px 0;transition:.2s}
    .site-footer a:hover{color:#9be1ca;padding-left:3px}
    .footer-bottom{margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.13);display:flex;justify-content:space-between;gap:16px;color:#9bb0a9;font-size:12px}
    @media(max-width:1024px){
      .logo{min-width:auto}.main-nav{gap:1px}.main-nav a{padding:8px 8px;font-size:13px}
      .feature-guide,.checklist-wrap,.faq-layout{grid-template-columns:1fr}
      .faq-intro{position:static}.channel-nav{grid-template-columns:repeat(2,1fr)}
      .guide-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:repeat(3,1fr)}
      .intro-grid{grid-template-columns:1fr}.intro-side{max-width:430px}
    }
    @media(max-width:768px){
      body{font-size:15px}.container{width:min(100% - 30px,var(--max))}
      .site-header{height:70px}.header-inner{gap:12px;justify-content:space-between}
      .main-nav,.header-action{display:none}.menu-toggle{display:grid;place-items:center}
      .site-header.menu-open{height:auto}.site-header.menu-open .header-inner{min-height:70px;flex-wrap:wrap;padding:14px 0}
      .site-header.menu-open .main-nav{display:flex;order:3;flex-basis:100%;flex-direction:column;align-items:stretch;padding-top:8px}
      .site-header.menu-open .main-nav a{padding:11px 13px}.site-header.menu-open .header-action{display:inline-flex;order:4;flex-basis:100%}
      .page-intro{padding:35px 0 40px}.section{padding:58px 0}.section-head{display:block;margin-bottom:23px}.section-lead{margin-top:12px}
      .feature-guide{border-radius:20px}.guide-art{min-height:250px}.guide-copy{padding:29px}
      .guide-grid,.article-grid,.path-checks{grid-template-columns:1fr}.path-layout{grid-template-columns:1fr}
      .checklist-wrap{gap:18px}.check-row{grid-template-columns:42px 1fr}.check-row .state{grid-column:2;justify-self:start}
      .cta-box{padding:32px 25px;display:block}.cta-actions{margin-top:23px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}
    }
    @media(max-width:520px){
      .logo strong{font-size:16px}.logo small{font-size:10px}.logo-mark{width:35px;height:35px}
      .channel-nav{display:flex;overflow-x:auto;padding-bottom:4px}.channel-link{min-width:210px}
      .intro-grid h1{font-size:34px}.intro-grid p{font-size:15px}.tag-row{margin-top:18px}
      .guide-art{min-height:210px;padding:20px}.guide-sheet{left:9%;right:9%;bottom:20px}.guide-copy h2{font-size:27px}
      .responsible-inner{padding:18px}.footer-grid{grid-template-columns:1fr}.cta-actions .btn{width:100%}
    }

/* roulang page: category3 */
:root{
      --primary:#167b6b;--primary-dark:#105f54;--deep:#17312d;--accent:#f28b57;
      --bg:#f7f8f5;--mint:#eaf4ef;--peach:#fff1e9;--card:#fff;
      --text:#36433f;--muted:#708079;--line:#dce5e0;--radius:18px;
      --shadow:0 14px 40px rgba(23,49,45,.08);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    img{max-width:100%;display:block}
    .container{width:min(var(--max),calc(100% - 40px));margin:auto}
    .site-header{height:78px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:225px}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;box-shadow:0 8px 18px rgba(22,123,107,.19)}
    .logo strong{display:block;color:var(--deep);font-size:18px;line-height:1.15}
    .logo small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
    .main-nav{display:flex;align-items:center;gap:5px;flex:1}
    .main-nav a{padding:8px 12px;border-radius:9px;color:#53645e;font-size:14px;white-space:nowrap;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:var(--mint)}
    .header-action,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:11px;font-weight:700;transition:.2s ease;gap:8px}
    .header-action,.btn-primary{background:var(--primary);color:#fff}
    .header-action:hover,.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);color:#fff}
    .btn-secondary{background:#fff;border:1px solid var(--primary);color:var(--primary)}
    .btn-secondary:hover{background:var(--mint);color:var(--primary);transform:translateY(-2px)}
    .btn:focus-visible,.header-action:focus-visible,.main-nav a:focus-visible,.channel-link:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(242,139,87,.45);outline-offset:3px}
    .menu-toggle{display:none;background:var(--mint);color:var(--deep);width:44px;height:42px;border-radius:10px;font-size:21px}
    main{overflow:hidden}
    .section{padding:84px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-kicker,.eyebrow{color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
    .section h2{font-size:clamp(27px,3vw,36px);line-height:1.3;color:var(--deep);margin:7px 0 0;letter-spacing:-.025em}
    .section-lead{color:var(--muted);max-width:600px;margin:0}
    .page-top{padding:54px 0 48px;background:linear-gradient(115deg,var(--mint) 0%,#f9fbf8 56%,var(--peach) 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-top:before,.page-top:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(22,123,107,.16)}
    .page-top:before{width:380px;height:380px;right:-105px;top:-250px}
    .page-top:after{width:175px;height:175px;right:12%;bottom:-130px}
    .breadcrumb{display:flex;gap:9px;align-items:center;font-size:13px;color:var(--muted);position:relative;z-index:1;margin-bottom:17px}
    .breadcrumb span{color:#9baaa4}
    .page-top-grid{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:45px;align-items:end;position:relative;z-index:1}
    .page-top h1{font-size:clamp(34px,4vw,48px);line-height:1.22;color:var(--deep);margin:10px 0 14px;letter-spacing:-.04em}
    .page-top p{margin:0;color:#53645e;max-width:760px;font-size:17px}
    .top-note{background:rgba(255,255,255,.82);border:1px solid rgba(22,123,107,.18);border-radius:18px;padding:18px 20px;box-shadow:0 12px 30px rgba(23,49,45,.05)}
    .top-note b{display:block;color:var(--deep);font-size:15px;margin-bottom:3px}
    .top-note span{display:block;color:var(--muted);font-size:13px;line-height:1.65}
    .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
    .label,.card-tag{display:inline-flex;align-items:center;background:var(--mint);color:var(--primary);border-radius:20px;padding:3px 10px;font-size:12px;font-weight:700}
    .label.peach{background:var(--peach);color:#bd6138}
    .channel-section{padding:30px 0;background:#fff;border-bottom:1px solid var(--line)}
    .channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
    .channel-link{min-height:66px;display:flex;align-items:center;gap:12px;padding:12px 15px;border:1px solid var(--line);border-radius:14px;background:#fff;color:#53645e;font-weight:700;font-size:14px;transition:.2s}
    .channel-link:hover{border-color:#acd1c6;background:var(--mint);color:var(--primary);transform:translateY(-2px)}
    .channel-link.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 10px 22px rgba(22,123,107,.18)}
    .channel-num{width:27px;height:27px;border-radius:8px;background:var(--mint);color:var(--primary);display:grid;place-items:center;font-size:12px;font-weight:800}
    .channel-link.active .channel-num{background:rgba(255,255,255,.2);color:#fff}
    .feature-download{display:grid;grid-template-columns:.92fr 1.08fr;min-height:365px;border-radius:24px;overflow:hidden;background:var(--deep);box-shadow:var(--shadow)}
    .feature-visual{padding:34px;position:relative;background:linear-gradient(145deg,#215e53,#17312d);overflow:hidden;display:flex;align-items:center;justify-content:center}
    .feature-visual:before{content:"";position:absolute;width:300px;height:300px;border-radius:50%;border:1px dashed rgba(255,255,255,.26)}
    .feature-visual:after{content:"";position:absolute;width:165px;height:165px;border-radius:34px;background:rgba(242,139,87,.23);transform:rotate(28deg);right:-45px;bottom:-38px}
    .app-slab{width:214px;height:278px;border:8px solid #e8f1ed;border-radius:30px;background:#fff;padding:17px;position:relative;z-index:1;box-shadow:0 20px 35px rgba(0,0,0,.21)}
    .app-slab:before{content:"";display:block;width:58px;height:7px;border-radius:8px;background:#dce5e0;margin:0 auto 18px}
    .app-head{height:41px;border-radius:11px;background:var(--mint);display:flex;align-items:center;gap:8px;padding:8px 10px;font-size:11px;font-weight:800;color:var(--primary)}
    .app-dot{width:19px;height:19px;border-radius:7px;background:var(--primary)}
    .app-bars{display:grid;gap:10px;margin-top:17px}
    .app-bars i{display:block;height:35px;border-radius:10px;background:linear-gradient(90deg,#eaf4ef 0 68%,#fff1e9 68%)}
    .app-bars i:nth-child(2){background:linear-gradient(90deg,#fff1e9 0 48%,#eaf4ef 48%)}
    .app-bars i:nth-child(3){background:linear-gradient(90deg,#eaf4ef 0 80%,#fff1e9 80%)}
    .feature-copy{padding:42px 45px;color:#fff;display:flex;flex-direction:column;justify-content:center}
    .feature-copy .section-kicker{color:#9ed5c5}
    .feature-copy h2{font-size:32px;color:#fff;margin:8px 0 14px}
    .feature-copy p{color:#c4d6d0;margin:0;max-width:620px}
    .check-list{list-style:none;padding:0;margin:21px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .check-list li{font-size:13px;color:#e0ebe7}
    .check-list li:before{content:"✓";display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;background:rgba(158,213,197,.2);color:#a9e2d1;margin-right:7px;font-weight:800}
    .feature-copy .btn{align-self:flex-start;margin-top:27px;background:#fff;color:var(--primary)}
    .feature-copy .btn:hover{background:#eaf4ef}
    .download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.2s;min-height:215px;display:flex;flex-direction:column}
    .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9d8ce}
    .step-num{width:39px;height:39px;display:grid;place-items:center;border-radius:12px;background:var(--mint);color:var(--primary);font-weight:800;font-size:14px;margin-bottom:15px}
    .info-card h3{font-size:18px;color:var(--deep);line-height:1.45;margin:0 0 8px}
    .info-card p{color:var(--muted);font-size:14px;line-height:1.75;margin:0}
    .meta{color:var(--muted);font-size:12px;margin-top:auto;padding-top:15px;display:flex;gap:8px;align-items:center}
    .meta:before{content:"●";color:var(--accent);font-size:10px}
    .soft-panel{background:var(--peach)}
    .install-route{display:grid;grid-template-columns:.9fr 1.1fr;gap:55px;align-items:center}
    .route-copy h2{margin-bottom:14px}
    .route-copy p{color:var(--muted);margin-bottom:22px}
    .route-points{display:grid;gap:12px}
    .route-point{padding:14px 15px;background:#fff;border:1px solid var(--line);border-radius:13px;display:flex;gap:13px;align-items:flex-start}
    .route-point b{width:27px;height:27px;flex:0 0 27px;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:12px}
    .route-point strong{display:block;color:var(--deep);font-size:14px;line-height:1.45}
    .route-point span{display:block;color:var(--muted);font-size:13px;line-height:1.55;margin-top:2px}
    .route-board{background:#fff;border:1px solid var(--line);border-radius:23px;padding:28px;box-shadow:var(--shadow)}
    .route-board h3{font-size:21px;color:var(--deep);margin:0 0 20px}
    .route-line{position:relative;padding:0 0 21px 43px}
    .route-line:last-child{padding-bottom:0}
    .route-line:before{content:"";position:absolute;left:14px;top:27px;bottom:-2px;width:1px;background:#cde1d9}
    .route-line:last-child:before{display:none}
    .route-line b{position:absolute;left:0;top:0;width:29px;height:29px;border-radius:50%;background:var(--mint);color:var(--primary);display:grid;place-items:center;font-size:12px}
    .route-line strong{display:block;color:var(--deep);font-size:15px}
    .route-line p{color:var(--muted);font-size:13px;margin:3px 0 0;line-height:1.65}
    .compare-wrap{overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff}
    .compare-table{width:100%;border-collapse:collapse}
    .compare-table th,.compare-table td{padding:17px 21px;text-align:left;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
    .compare-table th{background:#f3f8f5;color:var(--deep);font-weight:800}
    .compare-table td:first-child{font-weight:700;color:#53645e;width:20%}
    .compare-table tr:last-child td{border-bottom:0}
    .system-cell{display:inline-flex;align-items:center;gap:8px;color:var(--deep);font-weight:700}
    .system-icon{width:25px;height:25px;border-radius:8px;background:var(--mint);color:var(--primary);display:grid;place-items:center;font-size:12px;font-weight:800}
    .system-icon.apple{background:var(--peach);color:#bd6138}
    .notice-strip{padding:28px 0;background:var(--peach);border-top:1px solid #f3dfd3;border-bottom:1px solid #f3dfd3}
    .notice-inner{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start}
    .notice-icon{width:42px;height:42px;border-radius:14px;background:#fff;color:var(--accent);display:grid;place-items:center;font-weight:900;font-size:19px}
    .notice-inner h2{font-size:20px;color:var(--deep);margin:0 0 5px}
    .notice-inner p{font-size:14px;color:#6d665e;margin:0}
    .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .article-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px;min-height:210px;display:flex;flex-direction:column;transition:.2s}
    .article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .article-card h3{font-size:18px;line-height:1.45;color:var(--deep);margin:14px 0 9px}
    .article-card p{font-size:14px;color:var(--muted);margin:0}
    .article-link{color:var(--primary);font-size:14px;font-weight:800;margin-top:auto;padding-top:18px;display:inline-flex;align-items:center;gap:6px}
    .article-link:hover{color:var(--primary-dark)}
    .article-link span{transition:.2s}
    .article-link:hover span{transform:translateX(4px)}
    .faq-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start}
    .faq-intro{padding:7px 0}
    .faq-intro h2{margin-bottom:14px}
    .faq-intro p{color:var(--muted);margin:0 0 24px}
    .faq-list{display:grid;gap:10px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
    .faq-question{width:100%;padding:17px 20px;display:flex;justify-content:space-between;gap:18px;align-items:center;background:#fff;color:var(--deep);font-weight:800;text-align:left;line-height:1.5}
    .faq-question i{font-style:normal;color:var(--primary);font-size:20px;transition:.2s}
    .faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px;line-height:1.8}
    .faq-item.open{border-color:#b6d8ce}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question i{transform:rotate(45deg)}
    .closing-section{padding:10px 0 88px}
    .closing-card{background:var(--deep);border-radius:25px;padding:42px 46px;color:#fff;display:grid;grid-template-columns:1fr auto;gap:35px;align-items:center;position:relative;overflow:hidden}
    .closing-card:after{content:"APP";position:absolute;right:-12px;bottom:-59px;font-size:180px;font-weight:900;line-height:1;color:rgba(255,255,255,.05)}
    .closing-card h2{color:#fff;font-size:32px;margin:0 0 10px;position:relative;z-index:1}
    .closing-card p{color:#c4d6d0;margin:0;max-width:665px;position:relative;z-index:1}
    .closing-actions{display:flex;gap:11px;flex-wrap:wrap;position:relative;z-index:1}
    .closing-actions .btn-secondary{border-color:#91cabb;background:transparent;color:#d8eee7}
    .closing-actions .btn-secondary:hover{background:rgba(255,255,255,.1);color:#fff}
    .site-footer{background:#17312d;color:#d1e0db;padding:56px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr .9fr;gap:38px;padding-bottom:37px}
    .footer-brand strong{display:block;color:#fff;font-size:21px;margin-bottom:8px}
    .footer-brand p{font-size:13px;line-height:1.75;margin:0;color:#b9cdc6}
    .site-footer h3{font-size:14px;color:#fff;margin:0 0 13px}
    .site-footer a{display:block;color:#b9cdc6;font-size:13px;margin:7px 0;transition:.2s}
    .site-footer a:hover{color:#a9e2d1;transform:translateX(2px)}
    .site-footer div p{font-size:13px;color:#b9cdc6;margin:0;line-height:1.75}
    .footer-bottom{border-top:1px solid rgba(220,229,224,.16);padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#99b0a8}
    @media (max-width:1024px){
      .header-inner{gap:16px}.logo{min-width:185px}.main-nav a{padding:7px 8px;font-size:13px}
      .feature-copy{padding:35px}.check-list{grid-template-columns:1fr}
      .download-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
      .page-top-grid{grid-template-columns:1fr}.top-note{max-width:360px}
      .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(var(--max),calc(100% - 30px))}
      .site-header{height:70px}.header-inner{justify-content:space-between}.logo{min-width:0}.logo strong{font-size:16px}.logo small{font-size:10px}
      .header-action{display:none}.menu-toggle{display:grid;place-items:center}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;padding:14px 15px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 26px rgba(23,49,45,.08);flex-direction:column;align-items:stretch}
      .main-nav.show{display:flex}.main-nav a{padding:11px 13px;font-size:14px}
      .page-top{padding:38px 0}.page-top h1{font-size:35px}.page-top p{font-size:16px}
      .section{padding:58px 0}.section-head{display:block;margin-bottom:23px}.section-lead{margin-top:12px}
      .channel-grid{grid-template-columns:repeat(2,1fr)}
      .feature-download,.install-route,.faq-layout{grid-template-columns:1fr}
      .feature-visual{min-height:290px}.feature-copy{padding:33px 28px}.feature-copy h2{font-size:28px}
      .compare-wrap{overflow-x:auto}.compare-table{min-width:660px}
      .closing-card{grid-template-columns:1fr;padding:34px 28px}.closing-card h2{font-size:28px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}
    }
    @media (max-width:520px){
      body{font-size:15px}.logo-mark{width:35px;height:35px}.logo small{display:none}
      .page-top h1{font-size:31px}.page-top p{font-size:15px}.breadcrumb{font-size:12px}
      .channel-grid,.download-grid,.article-grid{grid-template-columns:1fr}
      .channel-link{min-height:57px}.feature-visual{min-height:262px;padding:24px}.app-slab{transform:scale(.88)}
      .feature-copy{padding:29px 22px}.feature-copy h2{font-size:25px}.check-list{gap:7px}
      .info-card,.article-card{padding:20px}.route-board{padding:22px}.notice-inner{gap:13px}
      .closing-actions{display:grid;grid-template-columns:1fr}.closing-actions .btn{width:100%}
      .footer-grid{grid-template-columns:1fr}.site-footer{padding-top:43px}
    }

/* roulang page: category4 */
:root{
      --primary:#167b6b;--primary-dark:#105f54;--deep:#17312d;--accent:#f28b57;
      --bg:#f7f8f5;--mint:#eaf4ef;--peach:#fff1e9;--card:#fff;
      --text:#36433f;--muted:#708079;--line:#dce5e0;--radius:18px;
      --shadow:0 14px 40px rgba(23,49,45,.08);--max:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(242,139,87,.55);outline-offset:3px}
    img{max-width:100%;display:block}
    button{font:inherit;cursor:pointer;border:0}
    .container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
    .site-header{height:78px;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:225px}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
    .logo strong{display:block;color:var(--deep);font-size:18px;line-height:1.15}
    .logo small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
    .main-nav{display:flex;align-items:center;gap:5px;flex:1}
    .main-nav a{padding:8px 12px;border-radius:9px;color:#53645e;font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:var(--mint)}
    .header-action,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:11px;font-weight:700;transition:.2s}
    .header-action,.btn-primary{background:var(--primary);color:#fff}
    .header-action:hover,.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
    .btn-secondary{background:#fff;border:1px solid var(--primary);color:var(--primary)}
    .btn-secondary:hover{background:var(--mint);transform:translateY(-2px)}
    .menu-toggle{display:none;background:var(--mint);color:var(--deep);width:44px;height:42px;border-radius:10px;font-size:21px}
    .page-intro{padding:58px 0 50px;background:var(--mint);border-bottom:1px solid var(--line)}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px}
    .breadcrumb a{color:var(--primary)}
    .intro-row{display:flex;justify-content:space-between;gap:40px;align-items:end}
    .eyebrow,.section-kicker{color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
    h1,h2,h3{color:var(--deep);line-height:1.35}
    h1{font-size:clamp(34px,4.5vw,54px);letter-spacing:-.04em;margin:12px 0 16px}
    h2{font-size:clamp(27px,3vw,36px);margin:7px 0 12px}
    h3{font-size:19px;margin:0 0 8px}
    .intro-copy{max-width:720px;color:var(--muted);font-size:17px;margin:0}
    .intro-meta{display:flex;gap:9px;flex-wrap:wrap;justify-content:flex-end}
    .label,.card-tag{display:inline-flex;background:#fff;color:var(--primary);border:1px solid #cce1d8;border-radius:20px;padding:4px 11px;font-size:12px;font-weight:700;white-space:nowrap}
    .section{padding:84px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-lead{color:var(--muted);max-width:570px;margin:0}
    .channel-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .channel-nav a{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;transition:.2s}
    .channel-nav a:hover,.channel-nav a.active{border-color:#9bcdbf;background:#f4fbf7;box-shadow:var(--shadow);transform:translateY(-2px)}
    .channel-nav strong{display:block;color:var(--deep);font-size:15px}
    .channel-nav span{font-size:12px;color:var(--muted)}
    .feature-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;align-items:stretch}
    .feature-card{background:var(--deep);color:#fff;border-radius:24px;padding:36px;position:relative;overflow:hidden;min-height:320px}
    .feature-card:after{content:"PG";position:absolute;right:-15px;bottom:-58px;color:rgba(255,255,255,.06);font-size:205px;font-weight:900;line-height:1}
    .feature-card h3,.feature-card p,.feature-card ul{position:relative;z-index:1}
    .feature-card h3{font-size:28px;max-width:430px;margin:16px 0 12px;color:#fff}
    .feature-card p{max-width:520px;color:#c5d7d1}
    .feature-card ul{padding-left:20px;color:#dce9e4;margin:20px 0 0}
    .feature-side{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px}
    .feature-side .mini-title{font-size:13px;color:var(--primary);font-weight:800;margin-bottom:17px}
    .signal{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--line)}
    .signal:last-child{border-bottom:0}
    .signal-icon{width:38px;height:38px;border-radius:12px;background:var(--peach);color:var(--accent);display:grid;place-items:center;font-weight:800}
    .signal strong{display:block;color:var(--deep);font-size:15px}
    .signal span{display:block;color:var(--muted);font-size:13px}
    .content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .topic-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:208px;transition:.22s}
    .topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9d8ce}
    .topic-card .number{color:var(--accent);font-size:13px;font-weight:800}
    .topic-card h3{margin-top:14px}
    .topic-card p{font-size:14px;color:var(--muted);margin:0}
    .topic-foot{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
    .topic-foot a{color:var(--primary);font-weight:700}
    .more-link{display:inline-flex;color:var(--primary);font-weight:700;margin-top:26px}
    .more-link:hover{color:var(--primary-dark)}
    .split-section{background:var(--peach)}
    .split-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
    .number-list{display:grid;gap:14px;margin-top:25px}
    .number-item{display:flex;gap:15px;align-items:flex-start}
    .number-item b{width:30px;height:30px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;flex:0 0 auto;font-size:13px}
    .number-item strong{display:block;color:var(--deep)}
    .number-item span{display:block;color:var(--muted);font-size:14px}
    .showcase{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px}
    .showcase-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:18px}
    .showcase-top strong{font-size:18px;color:var(--deep)}
    .showcase-top span{font-size:12px;color:var(--primary);background:var(--mint);padding:4px 10px;border-radius:20px}
    .matrix{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .matrix-item{padding:16px;border:1px solid var(--line);border-radius:14px;background:#fbfcfa}
    .matrix-item b{display:block;color:var(--deep);font-size:14px}
    .matrix-item span{color:var(--muted);font-size:13px}
    .comparison{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:22px}
    .comparison-row{display:grid;grid-template-columns:1fr 1.2fr 1.2fr;border-bottom:1px solid var(--line)}
    .comparison-row:last-child{border-bottom:0}
    .comparison-row > div{padding:17px 20px;border-right:1px solid var(--line);font-size:14px}
    .comparison-row > div:last-child{border-right:0}
    .comparison-row.head{background:var(--deep);color:#fff;font-weight:700}
    .comparison-row.head > div{color:#fff}
    .comparison-row b{color:var(--deep)}
    .comparison-row span{color:var(--muted)}
    .related-section{background:var(--mint)}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .related-card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:22px;transition:.2s}
    .related-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
    .related-card .date{font-size:12px;color:var(--muted)}
    .related-card h3{font-size:18px;margin:13px 0 8px}
    .related-card p{font-size:14px;color:var(--muted);margin:0 0 17px}
    .related-card a{font-size:13px;color:var(--primary);font-weight:700}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:13px}
    .faq-item{padding:0;overflow:hidden}
    .faq-item button{width:100%;background:#fff;color:var(--deep);padding:19px 22px;text-align:left;font-weight:700;display:flex;justify-content:space-between;align-items:center}
    .faq-item button:hover{background:#f8fcfa}
    .faq-item button span{color:var(--primary);font-size:22px;font-weight:400}
    .faq-answer{display:none;padding:0 22px 19px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open button span{transform:rotate(45deg)}
    .cta{padding:60px 0}
    .cta-box{background:var(--deep);border-radius:26px;padding:38px 44px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:28px;position:relative;overflow:hidden}
    .cta-box:after{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:8%;top:-110px}
    .cta-box h2{color:#fff;margin:0 0 8px;position:relative;z-index:1}
    .cta-box p{color:#c3d5cf;margin:0;position:relative;z-index:1}
    .cta-actions{display:flex;gap:10px;position:relative;z-index:1;flex-wrap:wrap}
    .cta .btn-secondary{background:transparent;color:#fff;border-color:#86b8aa}
    .cta .btn-secondary:hover{background:rgba(255,255,255,.1)}
    .site-footer{background:#17312d;color:#c7d7d1;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}
    .footer-brand strong{display:block;color:#fff;font-size:21px;margin-bottom:9px}
    .footer-brand p,.site-footer p{font-size:13px;line-height:1.8;margin:0;color:#abc0b8}
    .site-footer h3{font-size:15px;color:#fff;margin:0 0 14px}
    .site-footer a{display:block;color:#abc0b8;font-size:13px;margin:7px 0;transition:.2s}
    .site-footer a:hover{color:#fff;padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#91aaa1;font-size:12px}
    @media(max-width:1024px){
      .header-inner{gap:14px}.logo{min-width:195px}.main-nav a{padding:8px 7px}
      .feature-wrap,.split-grid{gap:25px}.content-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .site-header{height:70px}.header-inner{justify-content:space-between}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:14px 20px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .main-nav.show{display:flex}.main-nav a{padding:12px 14px}
      .header-action{display:none}.menu-toggle{display:block}
      .page-intro{padding:42px 0 38px}.intro-row{display:block}.intro-meta{justify-content:flex-start;margin-top:22px}
      .section{padding:60px 0}.section-head{display:block}.section-head .section-lead{margin-top:12px}
      .channel-nav{grid-template-columns:1fr 1fr}.feature-wrap,.split-grid{grid-template-columns:1fr}
      .related-grid,.faq-list{grid-template-columns:1fr}.comparison{border-radius:16px}
      .comparison-row{grid-template-columns:1fr}.comparison-row.head{display:none}
      .comparison-row > div{border-right:0;padding:13px 18px}.comparison-row > div:first-child{background:var(--mint);font-weight:700}
      .cta-box{display:block;padding:32px 25px}.cta-actions{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
    }
    @media(max-width:520px){
      .container{width:min(var(--max),calc(100% - 28px))}
      .logo{min-width:0}.logo small{display:none}.logo strong{font-size:16px}
      h1{font-size:35px}.content-grid{grid-template-columns:1fr}.matrix{grid-template-columns:1fr}
      .feature-card,.feature-side,.showcase{padding:24px}.footer-grid{grid-template-columns:1fr}
      .cta-actions .btn{width:100%}.channel-nav a{padding:14px}
    }