/* roulang page: index */
:root{
  --ink:#123638;
  --ink-soft:#275456;
  --orange:#e76036;
  --orange-dark:#c94724;
  --mint:#4f9185;
  --cream:#f8f4ec;
  --paper:#fffdf9;
  --sand:#eee6d9;
  --line:#ddd5c8;
  --text:#193436;
  --muted:#687779;
  --white:#fff;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 14px 38px rgba(29,50,49,.09);
  --shadow-small:0 7px 18px rgba(29,50,49,.08);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease}
button{font:inherit}
img{max-width:100%;display:block}
:focus-visible{outline:3px solid rgba(231,96,54,.42);outline-offset:3px}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.site-header{height:74px;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:25px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);line-height:1.15;min-width:190px}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:14px;box-shadow:0 6px 14px rgba(231,96,54,.28)}
.brand-text small{display:block;font-size:10px;letter-spacing:.12em;color:var(--mint);font-weight:800;margin-top:3px}
.desktop-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
.desktop-nav a{font-size:14px;font-weight:700;color:#496062;padding:24px 0 21px;position:relative;white-space:nowrap}
.desktop-nav a:after{content:"";height:2px;position:absolute;bottom:16px;left:0;right:0;background:var(--orange);transform:scaleX(0);transition:transform .2s ease}
.desktop-nav a:hover,.desktop-nav a.active{color:var(--ink)}
.desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:6px}
.text-link{font-weight:700;color:var(--ink-soft);font-size:13px}
.text-link:hover{color:var(--orange)}
.btn{border:0;display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;cursor:pointer;letter-spacing:.01em}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 9px 18px rgba(231,96,54,.22)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#0d282a;transform:translateY(-2px)}
.btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}
.btn-outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--paper);border-radius:9px;color:var(--ink);font-size:20px}
.mobile-panel{display:none}
.hero{padding:70px 0 54px;overflow:hidden;position:relative;background:var(--paper)}
.hero:before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-170px;top:-260px;background:#f5e5d6}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;letter-spacing:.12em;font-weight:800}
.eyebrow:before{content:"";width:28px;height:2px;background:currentColor}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(36px,5vw,60px);line-height:1.18;letter-spacing:-.045em;color:var(--ink);margin:17px 0 22px;max-width:690px}
.hero-copy{font-size:17px;color:#526567;max-width:620px;margin-bottom:29px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{display:flex;gap:18px;align-items:center;margin-top:26px;color:var(--muted);font-size:13px}
.hero-note span{display:flex;align-items:center;gap:7px}
.dot{width:8px;height:8px;background:var(--mint);border-radius:50%}
.hero-visual{height:430px;position:relative}
.visual-circle{width:290px;height:290px;border-radius:50%;border:1px solid #dfd5c7;background:#f6eee4;position:absolute;right:50px;top:38px}
.phone{position:absolute;width:206px;height:374px;background:var(--ink);border:8px solid #23494a;border-radius:32px;box-shadow:0 25px 38px rgba(18,54,56,.22);overflow:hidden}
.phone.main{right:114px;top:10px;transform:rotate(5deg)}
.phone.back{right:0;top:76px;transform:rotate(13deg);opacity:.95}
.phone-top{height:52px;background:#e97b56;padding:15px;color:white;font-size:11px;font-weight:800}
.phone-content{padding:15px;background:#fffaf3;height:100%}
.mini-title{font-size:17px;color:var(--ink);font-weight:800;line-height:1.35;margin:8px 0}
.mini-line{height:7px;background:#e7dfd4;border-radius:5px;margin:9px 0}
.mini-line.short{width:58%}
.mini-card{border:1px solid #e5ddd2;border-radius:9px;background:#fff;padding:10px;margin-top:14px}
.mini-card strong{font-size:11px;display:block;color:var(--ink)}
.mini-card i{display:block;background:#e76036;width:31px;height:5px;border-radius:8px;margin-top:9px}
.floating-news{position:absolute;left:5px;bottom:25px;width:180px;background:#fffdf9;padding:14px;border-radius:12px;box-shadow:var(--shadow);border:1px solid #e5dbce;z-index:3}
.floating-news b{font-size:11px;color:var(--orange)}
.floating-news p{font-size:12px;line-height:1.45;margin:7px 0 0;color:var(--ink);font-weight:800}
.quickbar{background:var(--ink);color:#fff}
.quick-grid{display:grid;grid-template-columns:repeat(5,1fr)}
.quick-grid a{padding:20px 17px;border-right:1px solid rgba(255,255,255,.13);display:flex;align-items:center;gap:11px;font-size:14px;font-weight:800}
.quick-grid a:hover{background:#1d4a4b;color:#ffd4c5}
.quick-icon{width:29px;height:29px;border-radius:8px;background:rgba(231,96,54,.22);color:#ffad92;display:grid;place-items:center;font-size:14px}
.section{padding:84px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
.kicker{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:.13em;margin-bottom:7px}
h2{font-size:clamp(27px,3.5vw,39px);line-height:1.25;letter-spacing:-.03em;color:var(--ink);margin-bottom:0}
.section-intro{max-width:460px;color:var(--muted);margin:0;font-size:14px}
.experience{background:#f2ece2}
.experience-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:50px;align-items:center}
.screen-stage{min-height:420px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);position:relative;overflow:hidden;padding:42px}
.screen-stage:before{content:"";position:absolute;background:#e86b41;width:190px;height:190px;border-radius:50%;left:-82px;top:-72px}
.wide-screen{position:relative;z-index:1;width:min(100%,390px);margin:32px auto 0;border:7px solid var(--ink);border-radius:25px;min-height:250px;background:#fcf7ef;box-shadow:var(--shadow)}
.wide-screen header{height:46px;background:var(--ink);display:flex;align-items:center;gap:6px;padding:0 14px}
.wide-screen header i{width:8px;height:8px;border-radius:50%;background:#e76b43}
.wide-screen article{padding:20px}
.screen-badge{font-size:10px;color:var(--orange);font-weight:800}
.screen-heading{font-size:22px;font-weight:800;color:var(--ink);margin:8px 0}
.screen-tiles{display:grid;grid-template-columns:1.2fr .8fr;gap:9px}
.screen-tiles div{height:65px;background:#dbe9e2;border-radius:8px}
.screen-tiles div:nth-child(2){background:#f2cbb9}
.screen-tiles div:nth-child(3){background:#e9e2d5;grid-column:span 2;height:32px}
.feature-list{display:grid;gap:0}
.feature{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:19px 0;border-bottom:1px solid var(--line)}
.feature:last-child{border-bottom:0}
.feature-num{font-size:13px;font-weight:800;color:var(--orange);padding-top:3px}
.feature h3{font-size:18px;color:var(--ink);margin-bottom:4px}
.feature p{font-size:14px;color:var(--muted);margin:0}
.info-band{background:var(--ink);color:white;padding:50px 0}
.info-band .section-head h2{color:white}
.info-band .section-intro{color:#bbccca}
.info-list{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.16);border-bottom:1px solid rgba(255,255,255,.16)}
.info-item{padding:21px 21px 21px 0;border-right:1px solid rgba(255,255,255,.16)}
.info-item:not(:first-child){padding-left:22px}
.info-item:last-child{border-right:0}
.info-item b{display:block;font-size:25px;color:#ff936f;margin-bottom:5px}
.info-item span{font-size:13px;color:#c8d4d1}
.download-wrap{background:var(--paper)}
.download-card{background:var(--ink);border-radius:var(--radius);padding:42px 48px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:35px;color:white;overflow:hidden;position:relative}
.download-card:after{content:"";position:absolute;width:300px;height:300px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:-120px;bottom:-170px}
.download-card h2{color:white;margin-bottom:12px}
.download-card p{color:#c1d0cd;max-width:550px;margin-bottom:22px}
.platforms{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:23px}
.tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:30px;font-size:12px;font-weight:800;border:1px solid transparent}
.tag.light{background:rgba(255,255,255,.11);color:#e9f0ee;border-color:rgba(255,255,255,.15)}
.tag.mint{background:#dcece6;color:#246c60}
.download-side{position:relative;z-index:1;display:flex;align-items:center;gap:18px}
.qr{width:112px;height:112px;background:repeating-linear-gradient(45deg,#fff 0 5px,#d9dfdd 5px 9px);padding:8px;border-radius:8px}
.qr b{height:100%;background:#fff;display:grid;place-items:center;color:var(--ink);font-size:11px;text-align:center;line-height:1.4}
.version-note{font-size:12px;color:#c0cfcc;max-width:145px;line-height:1.6}
.timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.version-item{padding:26px 24px 5px 0;position:relative;border-right:1px solid var(--line)}
.version-item:not(:first-child){padding-left:24px}
.version-item:last-child{border:0}
.version-item:before{content:"";position:absolute;width:11px;height:11px;background:var(--orange);border-radius:50%;top:-6px;left:0}
.version-item:not(:first-child):before{left:24px}
.version-item time{font-size:12px;color:var(--muted)}
.version-item h3{font-size:19px;color:var(--ink);margin:8px 0}
.version-item p{font-size:13px;color:var(--muted);margin:0 0 10px}
.article-link{font-size:13px;color:var(--orange);font-weight:800}
.article-link:hover{color:var(--orange-dark)}
.news-section{background:#f1eadf}
.news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
.news-featured{background:var(--ink);color:white;border-radius:var(--radius);padding:34px;min-height:340px;display:flex;flex-direction:column;justify-content:flex-end;position:relative;overflow:hidden}
.news-featured:before{content:"W";position:absolute;right:25px;top:-62px;font-size:260px;font-weight:900;color:rgba(255,255,255,.045)}
.news-featured h3{font-size:29px;line-height:1.35;margin:12px 0;color:#fff;position:relative}
.news-featured p{color:#bfd0cd;font-size:14px;margin:0 0 16px;position:relative}
.news-featured .article-link{color:#ffa083}
.news-list{display:grid;gap:12px}
.news-row{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px;display:grid;grid-template-columns:92px 1fr;gap:15px}
.news-date{font-weight:800;color:var(--orange);font-size:13px;border-right:1px solid var(--line)}
.news-date small{display:block;color:var(--muted);font-size:11px;font-weight:600;margin-top:3px}
.news-row h3{font-size:16px;line-height:1.45;margin:0 0 5px;color:var(--ink)}
.news-row p{font-size:12px;line-height:1.55;margin:0;color:var(--muted)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:198px;position:relative}
.step b{font-size:13px;color:var(--orange)}
.step h3{font-size:19px;margin:22px 0 8px;color:var(--ink)}
.step p{font-size:13px;margin:0;color:var(--muted)}
.step:after{content:"→";position:absolute;right:-21px;top:83px;color:var(--orange);font-size:21px;z-index:2}
.step:last-child:after{display:none}
.topics{background:var(--paper)}
.topics-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
.topic-main{min-height:310px;border-radius:var(--radius);background:#dceae5;padding:35px;display:flex;flex-direction:column;justify-content:end;position:relative;overflow:hidden}
.topic-main:before{content:"";position:absolute;width:190px;height:190px;right:-35px;top:-40px;border:28px solid rgba(18,54,56,.13);border-radius:50%}
.topic-main h3,.topic-small h3{color:var(--ink);font-size:28px;line-height:1.35;margin:7px 0;position:relative}
.topic-main p,.topic-small p{color:#49696a;font-size:14px;margin:0;position:relative}
.topic-stack{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.topic-small{border:1px solid var(--line);padding:22px;border-radius:var(--radius);min-height:145px;background:#fffaf3}
.topic-small:nth-child(2){background:#f6d7c9;border-color:#edc2af}
.topic-small h3{font-size:18px}
.guide-section{background:#f2ece2}
.guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}
.guide-item{background:var(--paper);border:1px solid var(--line);border-radius:11px;padding:19px 21px;display:flex;align-items:start;gap:15px}
.guide-item strong{width:28px;height:28px;border-radius:50%;background:#f9ddd2;color:var(--orange);display:grid;place-items:center;flex:0 0 auto;font-size:13px}
.guide-item h3{font-size:17px;margin:0 0 4px;color:var(--ink)}
.guide-item p{font-size:13px;color:var(--muted);margin:0}
.dynamic-section{background:var(--paper)}
.dynamic-list{border-top:1px solid var(--line)}
.dynamic-item{display:grid;grid-template-columns:150px 1fr auto;align-items:center;gap:25px;padding:20px 0;border-bottom:1px solid var(--line)}
.dynamic-meta{font-size:12px;color:var(--muted)}
.dynamic-meta b{display:block;color:var(--mint);font-size:13px;margin-bottom:3px}
.dynamic-item h3{font-size:17px;line-height:1.45;color:var(--ink);margin:0 0 4px}
.dynamic-item p{font-size:13px;color:var(--muted);margin:0;line-height:1.55}
.empty-state{border:1px dashed #d2c4b3;border-radius:var(--radius);padding:42px;text-align:center;background:#fffaf3;color:var(--muted)}
.empty-state i{display:block;font-style:normal;font-size:27px;color:var(--orange);margin-bottom:8px}
.notice-strip{padding:34px 0;background:#f7dccc}
.notice-items{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.notice{display:flex;gap:11px;align-items:flex-start}
.notice b{font-size:11px;color:#fff;background:var(--orange);padding:3px 7px;border-radius:5px;white-space:nowrap}
.notice p{font-size:13px;line-height:1.55;margin:0;color:#62453d}
.notice time{font-size:11px;color:#8f7065;display:block;margin-top:2px}
.safety-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:45px;align-items:center}
.safety-panel{background:var(--ink);padding:33px;border-radius:var(--radius);color:#fff}
.safety-panel h2{color:#fff;margin-bottom:13px}
.safety-panel p{color:#c1d0cd;font-size:14px;margin-bottom:0}
.safety-list{display:grid;gap:0}
.safety-item{padding:17px 0;border-bottom:1px solid var(--line);display:flex;gap:14px}
.safety-item:last-child{border:0}
.safety-item i{font-style:normal;color:var(--mint);font-weight:900}
.safety-item h3{margin:0 0 3px;color:var(--ink);font-size:16px}
.safety-item p{font-size:13px;color:var(--muted);margin:0}
.faq-section{background:#f2ece2}
.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:48px}
.faq-layout .section-intro{margin-top:15px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{width:100%;border:0;background:transparent;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:18px 0;color:var(--ink);font-weight:800;cursor:pointer;font-size:16px}
.faq-question span{color:var(--orange);font-size:23px;font-weight:400;transition:transform .2s ease}
.faq-answer{display:none;padding:0 35px 18px 0;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span{transform:rotate(45deg)}
.final-cta{padding:68px 0;background:var(--paper)}
.cta-box{border-radius:var(--radius);background:var(--ink);padding:46px 52px;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden}
.cta-box:after{content:"";position:absolute;right:30px;top:-95px;width:220px;height:220px;border:1px solid rgba(255,255,255,.13);border-radius:50%}
.cta-box h2{color:white;margin:0 0 8px;position:relative;z-index:1}
.cta-box p{color:#bfd0cd;margin:0;position:relative;z-index:1}
.cta-box .btn{position:relative;z-index:1;white-space:nowrap}
.site-footer{background:#0d292b;border-top:4px solid var(--orange);color:#d7e2df;padding:52px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.2fr .9fr .8fr;gap:50px;padding-bottom:37px;border-bottom:1px solid rgba(255,255,255,.13)}
.footer-brand{color:#fff}
.footer-brand .brand-mark{display:inline-grid;margin-right:9px;vertical-align:middle}
.footer-brand b{font-size:18px}
.footer-brand p{font-size:13px;line-height:1.7;color:#abc0bc;max-width:350px;margin:14px 0 0}
.footer-title{color:#fff;font-size:14px;font-weight:800;margin-bottom:14px}
.footer-links{display:grid;gap:7px}
.footer-links a{font-size:13px;color:#abc0bc}
.footer-links a:hover{color:#ffad92}
.footer-info{font-size:13px;color:#abc0bc;line-height:1.75}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;align-items:center;padding-top:18px;font-size:12px;color:#8fa9a5}
.footer-bottom a{color:#a7c3bd}
@media(max-width:1024px){
  .desktop-nav{gap:14px}.header-actions .text-link{display:none}
  .hero-grid{gap:25px}.hero-visual{transform:scale(.9);transform-origin:center right}
  .quick-grid a{padding:17px 10px;font-size:13px}
  .info-list{grid-template-columns:repeat(2,1fr)}.info-item:nth-child(2){border-right:0}.info-item:nth-child(3){border-top:1px solid rgba(255,255,255,.16);padding-left:0}.info-item:nth-child(4){border-top:1px solid rgba(255,255,255,.16)}
}
@media(max-width:768px){
  .container{width:min(calc(100% - 32px),var(--container))}
  .site-header{height:66px}.desktop-nav,.header-actions{display:none}.menu-toggle{display:grid;place-items:center;margin-left:auto}
  .mobile-panel{position:absolute;left:0;right:0;top:65px;background:var(--paper);border-bottom:1px solid var(--line);padding:17px 16px 20px;box-shadow:var(--shadow);z-index:10}
  .mobile-panel.show{display:block}.mobile-panel a{display:block;padding:11px 4px;font-weight:800;color:var(--ink);border-bottom:1px solid #eee5d9}.mobile-panel .btn{margin-top:15px;width:100%}
  .hero{padding:52px 0 28px}.hero-grid,.experience-grid,.news-layout,.topics-grid,.safety-grid,.faq-layout{grid-template-columns:1fr;gap:30px}
  .hero-visual{height:320px;transform:scale(.78);transform-origin:top center;margin:-15px 0 -45px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}.quick-grid a{border-bottom:1px solid rgba(255,255,255,.13)}.quick-grid a:last-child{grid-column:span 2}
  .section{padding:60px 0}.section-head{display:block}.section-intro{margin-top:12px}
  .download-card{grid-template-columns:1fr;padding:31px 25px}.download-side{justify-content:flex-start}
  .timeline,.steps-grid{grid-template-columns:1fr}.version-item,.version-item:not(:first-child){padding:18px 0 18px 23px;border-right:0;border-bottom:1px solid var(--line)}.version-item:before,.version-item:not(:first-child):before{left:0;top:23px}.version-item:last-child{border-bottom:0}
  .steps-grid{gap:10px}.step{min-height:auto}.step:after{content:"↓";left:27px;right:auto;top:auto;bottom:-25px}.topic-stack{grid-template-columns:1fr}
  .guide-list{grid-template-columns:1fr}.dynamic-item{grid-template-columns:1fr;gap:7px}.dynamic-item .article-link{margin-top:3px}
  .notice-items{grid-template-columns:1fr;gap:14px}.info-item{padding:18px 13px!important}.faq-layout{gap:24px}
  .cta-box{display:block;padding:34px 27px}.cta-box .btn{margin-top:21px}.footer-grid{grid-template-columns:1fr;gap:27px}.footer-bottom{display:block;line-height:1.8}
}
@media(max-width:480px){
  h1{font-size:35px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}
  .quick-grid{grid-template-columns:1fr}.quick-grid a:last-child{grid-column:auto}.info-list{grid-template-columns:1fr}.info-item{border-right:0!important;border-top:1px solid rgba(255,255,255,.16)}.info-item:first-child{border-top:0}
  .download-side{align-items:flex-start}.qr{width:92px;height:92px}.version-note{font-size:11px}.news-row{grid-template-columns:1fr}.news-date{border-right:0;border-bottom:1px solid var(--line);padding-bottom:8px}.screen-stage{padding:21px}
}

/* roulang page: category1 */
:root{
  --ink:#123638;--ink-soft:#275456;--orange:#e76036;--orange-dark:#c94724;
  --mint:#4f9185;--cream:#f8f4ec;--paper:#fffdf9;--sand:#eee6d9;
  --line:#ddd5c8;--text:#193436;--muted:#687779;--white:#fff;
  --radius:16px;--radius-sm:10px;--shadow:0 14px 38px rgba(29,50,49,.09);
  --shadow-small:0 7px 18px rgba(29,50,49,.08);--container:1200px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s,border-color .2s}
button{font:inherit} img{max-width:100%;display:block}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.site-header{height:74px;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:25px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);line-height:1.15;min-width:190px}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:14px;box-shadow:0 6px 14px rgba(231,96,54,.28)}
.brand-text small{display:block;font-size:10px;letter-spacing:.12em;color:var(--mint);font-weight:800;margin-top:3px}
.desktop-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
.desktop-nav a{font-size:14px;font-weight:700;color:#496062;padding:24px 0 21px;position:relative;white-space:nowrap}
.desktop-nav a:after{content:"";height:2px;position:absolute;bottom:16px;left:0;right:0;background:var(--orange);transform:scaleX(0);transition:transform .2s}
.desktop-nav a:hover,.desktop-nav a.active{color:var(--ink)}
.desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:6px}
.text-link{font-weight:700;color:var(--ink-soft);font-size:13px}.text-link:hover{color:var(--orange)}
.btn{border:0;display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;cursor:pointer;letter-spacing:.01em}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 9px 18px rgba(231,96,54,.22)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#0d282a;color:#fff;transform:translateY(-2px)}
.btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}.btn-outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--paper);border-radius:9px;color:var(--ink);font-size:20px}
.mobile-panel{display:none}
.page-head{padding:58px 0 54px;background:var(--paper);border-bottom:1px solid var(--line)}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:25px}.breadcrumb a:hover{color:var(--orange)}
.breadcrumb span{margin:0 8px;color:#b6aaa0}
.page-head-grid{display:flex;justify-content:space-between;align-items:end;gap:36px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;letter-spacing:.12em;font-weight:800}
.eyebrow:before{content:"";width:28px;height:2px;background:currentColor}
h1,h2,h3{color:var(--ink);line-height:1.25;margin:0 0 14px;font-weight:850}
h1{font-size:clamp(34px,5vw,58px);letter-spacing:-.04em}
h2{font-size:clamp(25px,3vw,36px);letter-spacing:-.025em}
h3{font-size:18px}
.page-lead{max-width:540px;color:var(--muted);margin:0;font-size:16px}
.head-note{min-width:210px;padding:18px 20px;border-left:3px solid var(--orange);background:#faf1e7;color:var(--ink-soft)}
.head-note b{display:block;color:var(--ink);font-size:13px;margin-bottom:5px}.head-note span{font-size:13px}
.section{padding:76px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
.section-intro{max-width:480px;color:var(--muted);margin:0}
.featured{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
.feature-card,.news-list,.timeline,.reading-note,.topic-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-small)}
.feature-card{padding:34px;min-height:280px;position:relative;overflow:hidden}
.feature-card:after{content:"";position:absolute;width:190px;height:190px;border-radius:50%;right:-75px;bottom:-90px;background:#f4ddd0}
.card-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px;margin-bottom:19px}
.tag{display:inline-flex;padding:4px 10px;border-radius:20px;background:#e5f0eb;color:var(--mint);font-size:11px;font-weight:800}
.feature-card h2{max-width:620px;font-size:30px}.feature-card p{max-width:650px;color:var(--muted);margin-bottom:25px;position:relative;z-index:1}
.feature-side{background:var(--ink);border-radius:var(--radius);padding:30px;color:#dce7e3;display:flex;flex-direction:column;justify-content:space-between}
.feature-side h3{color:#fff;font-size:24px}.feature-side p{color:#b8cdca;margin:0}
.news-list{overflow:hidden}.news-row{display:grid;grid-template-columns:92px 100px 1fr auto;gap:18px;align-items:center;padding:22px 26px;border-bottom:1px solid var(--line)}
.news-row:last-child{border-bottom:0}.news-date{font-size:13px;color:var(--muted)}.news-title{font-size:17px;font-weight:800;color:var(--ink)}
.news-title:hover{color:var(--orange)}.news-summary{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.arrow{font-size:20px;color:var(--orange)}.empty{padding:38px;text-align:center;color:var(--muted)}
.timeline-wrap{background:#f1e9de;padding:38px;border-radius:var(--radius)}
.timeline{padding:8px 30px}.timeline-item{display:grid;grid-template-columns:130px 1fr;gap:26px;padding:24px 0;border-bottom:1px solid var(--line)}
.timeline-item:last-child{border-bottom:0}.timeline-time{font-size:13px;color:var(--orange);font-weight:800;padding-top:4px}
.timeline-item h3{margin-bottom:5px}.timeline-item p{margin:0;color:var(--muted);font-size:14px}
.topics{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}.topic-card{padding:25px;min-height:160px}
.topic-card:first-child{background:var(--mint);color:#fff}.topic-card:first-child h3{color:#fff}.topic-card:first-child p{color:#e2efeb}
.topic-card p{color:var(--muted);font-size:14px;margin:0}.topic-card .tag{margin-bottom:24px}
.reading-note{padding:28px 32px;display:flex;justify-content:space-between;gap:24px;align-items:center}
.reading-note p{margin:0;color:var(--muted);max-width:720px}.reading-note strong{color:var(--ink)}
.cta{padding:58px 0;background:var(--ink);color:#dce7e3}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}.cta h2{color:#fff}.cta p{margin:0;color:#b8cdca}
.site-footer{background:#0d292b;color:#b8cdca;padding:52px 0 22px;border-top:4px solid var(--orange)}
.footer-grid{display:grid;grid-template-columns:1.5fr .7fr 1fr;gap:60px}.footer-brand b{color:#fff;margin-left:8px}.footer-brand p{max-width:440px;margin:18px 0 0;font-size:13px}
.footer-title{color:#fff;font-weight:800;margin-bottom:15px}.footer-links{display:grid;gap:8px;font-size:13px}.footer-links a:hover,.footer-info a:hover{color:#ff9979}
.footer-info{font-size:13px;line-height:2}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;font-size:12px;color:#91aaa7}
@media(max-width:992px){.desktop-nav{gap:13px}.header-actions .text-link{display:none}.featured{grid-template-columns:1fr}.topics{grid-template-columns:1fr 1fr}.footer-grid{gap:28px}}
@media(max-width:768px){.container{width:min(calc(100% - 34px),var(--container))}.site-header{height:68px}.desktop-nav,.header-actions{display:none}.menu-toggle{display:block}.mobile-panel{position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:14px 17px 20px;box-shadow:var(--shadow);flex-direction:column;gap:3px}.mobile-panel.open{display:flex}.mobile-panel>a:not(.btn){padding:12px 4px;border-bottom:1px solid var(--line);font-weight:700}.mobile-panel .btn{margin-top:12px}.page-head{padding:40px 0}.page-head-grid{display:block}.head-note{margin-top:25px}.section{padding:52px 0}.section-head{display:block}.section-intro{margin-top:12px}.news-row{grid-template-columns:72px 1fr auto;gap:10px;padding:19px 17px}.news-row .tag{display:none}.news-summary{grid-column:2/3}.timeline-wrap{padding:17px}.timeline{padding:5px 18px}.timeline-item{grid-template-columns:1fr;gap:4px}.topics{grid-template-columns:1fr}.reading-note,.cta-inner{display:block}.reading-note .btn,.cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr;gap:30px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}
@media(max-width:520px){h1{font-size:36px}.feature-card{padding:25px}.feature-card h2{font-size:25px}.news-title{font-size:15px}.news-date{font-size:12px}.arrow{font-size:17px}}

/* roulang page: article */
:root{
      --ink:#123638;
      --ink-soft:#275456;
      --orange:#e76036;
      --orange-dark:#c94724;
      --mint:#4f9185;
      --cream:#f8f4ec;
      --paper:#fffdf9;
      --sand:#eee6d9;
      --line:#ddd5c8;
      --text:#193436;
      --muted:#687779;
      --white:#fff;
      --radius:16px;
      --radius-sm:10px;
      --shadow:0 14px 38px rgba(29,50,49,.09);
      --shadow-small:0 7px 18px rgba(29,50,49,.08);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--cream);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(231,96,54,.35);outline-offset:3px}
    button{font:inherit}
    img{max-width:100%;display:block}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{height:74px;background:rgba(255,253,249,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);line-height:1.15;min-width:190px}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:14px;box-shadow:0 6px 14px rgba(231,96,54,.28)}
    .brand-text small{display:block;font-size:10px;letter-spacing:.12em;color:var(--mint);font-weight:800;margin-top:3px}
    .desktop-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
    .desktop-nav a{font-size:14px;font-weight:700;color:#496062;padding:24px 0 21px;position:relative;white-space:nowrap}
    .desktop-nav a:after{content:"";height:2px;position:absolute;bottom:16px;left:0;right:0;background:var(--orange);transform:scaleX(0);transition:transform .2s ease}
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--ink)}
    .desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:14px;margin-left:6px}
    .text-link{font-weight:700;color:var(--ink-soft);font-size:13px}
    .text-link:hover{color:var(--orange)}
    .btn{border:0;display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;cursor:pointer;letter-spacing:.01em}
    .btn-primary{background:var(--orange);color:#fff;box-shadow:0 9px 18px rgba(231,96,54,.22)}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);color:#fff}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#0d282a;transform:translateY(-2px);color:#fff}
    .btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--paper);border-radius:9px;color:var(--ink);font-size:20px}
    .mobile-panel{display:none}
    .article-head{background:var(--paper);padding:72px 0 55px;border-bottom:1px solid var(--line)}
    .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:27px}
    .crumbs a:hover{color:var(--orange)}
    .crumbs .slash{color:#b8aea0}
    .article-head-grid{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:60px;align-items:end}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;letter-spacing:.12em;font-weight:800}
    .eyebrow:before{content:"";width:28px;height:2px;background:currentColor}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(32px,4vw,56px);line-height:1.18;letter-spacing:0;font-weight:900;color:var(--ink);margin:15px 0 20px;max-width:850px}
    .article-summary{font-size:17px;color:#526567;max-width:790px;margin:0}
    .article-meta{border-left:3px solid var(--orange);padding:6px 0 6px 20px;color:var(--muted);font-size:13px}
    .article-meta strong{display:block;color:var(--ink);font-size:16px;margin-bottom:6px}
    .article-meta span{display:block;margin-top:6px}
    .article-layout{display:grid;grid-template-columns:minmax(0,820px) 270px;gap:72px;align-items:start;padding:76px 0 92px}
    .article-content{min-width:0}
    .article-cover{height:250px;border-radius:var(--radius);background:linear-gradient(115deg,#123638 0 56%,#e76036 56% 72%,#f2c5a9 72%);position:relative;overflow:hidden;margin-bottom:42px;box-shadow:var(--shadow)}
    .article-cover:before{content:"H5";position:absolute;right:12%;top:24px;font-size:132px;font-weight:900;color:rgba(255,255,255,.13);line-height:1}
    .article-cover:after{content:"WENDING 官方内容";position:absolute;left:38px;bottom:28px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.08em}
    .article-body{font-size:16px;line-height:2;color:#304849}
    .article-body h2{font-size:27px;line-height:1.35;color:var(--ink);margin:44px 0 16px;padding-left:16px;border-left:4px solid var(--orange)}
    .article-body h3{font-size:21px;line-height:1.45;color:var(--ink);margin:30px 0 12px}
    .article-body p{margin-bottom:22px}
    .article-body ul,.article-body ol{padding-left:25px;margin:16px 0 25px}
    .article-body li{padding-left:5px;margin:8px 0}
    .article-body blockquote{margin:28px 0;padding:20px 24px;background:#f3ebe0;border-left:4px solid var(--mint);color:var(--ink-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0}
    .article-body table{width:100%;border-collapse:collapse;margin:25px 0;background:var(--paper);font-size:14px}
    .article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
    .article-body th{background:#f1e9de;color:var(--ink);font-weight:800}
    .article-body img{border-radius:var(--radius-sm);margin:25px auto;box-shadow:var(--shadow-small)}
    .article-body code{background:#e9e1d5;color:var(--orange-dark);padding:2px 6px;border-radius:5px;font-size:.9em}
    .missing-content{padding:58px 28px;text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);color:var(--muted)}
    .missing-content h2{color:var(--ink);font-size:26px;margin-bottom:12px}
    .article-note{display:flex;gap:16px;align-items:flex-start;margin:44px 0;padding:22px 24px;background:#e6f0ed;border:1px solid #c8ddd7;border-radius:var(--radius-sm);color:var(--ink-soft)}
    .note-icon{width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:var(--mint);color:#fff;display:grid;place-items:center;font-weight:900}
    .note-title{font-weight:800;color:var(--ink);margin-bottom:3px}
    .article-aside{position:sticky;top:104px}
    .aside-box{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-small)}
    .aside-title{color:var(--ink);font-size:16px;font-weight:900;margin-bottom:16px}
    .aside-list{list-style:none;padding:0;margin:0}
    .aside-list li{border-top:1px solid var(--line);padding:13px 0;color:var(--muted);font-size:13px}
    .aside-list li:first-child{border-top:0;padding-top:0}
    .aside-list a:hover{color:var(--orange)}
    .aside-label{display:inline-block;background:#f6dfd4;color:var(--orange-dark);font-size:11px;font-weight:800;padding:3px 8px;border-radius:5px;margin-bottom:10px}
    .aside-box + .aside-box{margin-top:18px}
    .aside-box p{font-size:13px;color:var(--muted);margin-bottom:18px}
    .related-section{padding:76px 0;background:#f1ebe2;border-top:1px solid var(--line)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
    .section-kicker{color:var(--orange);font-size:12px;font-weight:900;letter-spacing:.12em}
    h2{font-size:32px;line-height:1.25;color:var(--ink);margin:8px 0 0;font-weight:900}
    .section-intro{max-width:460px;color:var(--muted);margin:0;font-size:14px}
    .related-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:18px}
    .related-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:205px;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
    .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d4a28e}
    .related-card.featured{background:var(--ink);color:#fff}
    .related-card.featured h3,.related-card.featured .related-date{color:#fff}
    .related-card h3{font-size:19px;line-height:1.45;color:var(--ink);margin:11px 0 9px}
    .related-card p{font-size:13px;color:var(--muted);margin-bottom:18px}
    .featured p{color:#c3d0ce}
    .related-date{font-size:12px;color:var(--orange);font-weight:800}
    .related-more{margin-top:auto;color:var(--orange);font-size:13px;font-weight:800}
    .article-cta{padding:72px 0}
    .cta-panel{background:var(--ink);border-radius:var(--radius);padding:38px 45px;display:flex;justify-content:space-between;align-items:center;gap:30px;color:#fff;position:relative;overflow:hidden}
    .cta-panel:after{content:"W";position:absolute;right:38px;top:-38px;color:rgba(255,255,255,.06);font-size:180px;font-weight:900;line-height:1}
    .cta-panel h2{color:#fff;font-size:29px;position:relative;z-index:1}
    .cta-panel p{color:#c7d3d0;margin:8px 0 0;position:relative;z-index:1}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2}
    .site-footer{background:var(--ink);color:#d6e0dd;border-top:3px solid var(--orange);padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr .75fr 1fr;gap:62px;padding-bottom:38px}
    .footer-brand>div{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px}
    .footer-brand p{font-size:13px;line-height:1.8;color:#aabdb9;max-width:390px;margin:17px 0 0}
    .footer-title{font-size:14px;color:#fff;font-weight:800;margin-bottom:14px}
    .footer-links{display:grid;gap:7px}
    .footer-links a,.footer-info{font-size:13px;color:#aabdb9}
    .footer-links a:hover,.footer-info a:hover{color:#ff9b7b}
    .footer-info{line-height:2}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#8fa6a2;font-size:12px}
    @media (max-width:1200px){
      .desktop-nav{gap:15px}
      .article-layout{gap:42px}
    }
    @media (max-width:992px){
      .desktop-nav{display:none}
      .header-actions{margin-left:auto}
      .menu-toggle{display:block}
      .mobile-panel{position:absolute;left:0;right:0;top:74px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:16px 24px 22px}
      .mobile-panel.open{display:grid;gap:2px}
      .mobile-panel>a:not(.btn){padding:11px 0;border-bottom:1px solid var(--line);font-weight:700;color:var(--ink-soft)}
      .mobile-panel>a:hover{color:var(--orange)}
      .mobile-panel .btn{margin-top:13px}
      .article-head-grid,.article-layout{grid-template-columns:1fr}
      .article-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}
      .aside-box + .aside-box{margin-top:0}
      .related-grid{grid-template-columns:1fr 1fr}
      .related-card.featured{grid-column:1/-1}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 36px),var(--container))}
      .site-header{height:68px}
      .header-inner{height:68px}
      .brand{min-width:0}
      .brand-text{font-size:14px}
      .brand-text small{font-size:9px}
      .header-actions{display:none}
      .mobile-panel{top:68px}
      .article-head{padding:45px 0 38px}
      .article-head-grid{gap:25px}
      h1{font-size:34px}
      .article-summary{font-size:15px}
      .article-layout{padding:44px 0 58px;gap:38px}
      .article-cover{height:190px;margin-bottom:30px}
      .article-cover:before{font-size:92px}
      .article-body{font-size:15px}
      .article-body h2{font-size:24px;margin-top:35px}
      .article-aside{grid-template-columns:1fr}
      .related-section,.article-cta{padding:52px 0}
      .section-head{display:block}
      .section-intro{margin-top:13px}
      .related-grid{grid-template-columns:1fr}
      .related-card.featured{grid-column:auto}
      .cta-panel{display:block;padding:30px 26px}
      .cta-actions{margin-top:24px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:5px}
    }
    @media (max-width:480px){
      .container{width:min(calc(100% - 28px),var(--container))}
      .brand-mark{width:31px;height:31px;font-size:13px}
      .brand-text{font-size:13px}
      h1{font-size:29px}
      .crumbs{font-size:12px}
      .article-meta{font-size:12px}
      .article-cover{height:155px}
      .article-cover:after{left:22px;bottom:20px;font-size:14px}
      .article-body blockquote{padding:17px}
      .cta-panel h2{font-size:24px}
      .btn{width:100%}
      .cta-actions{display:grid}
    }

/* roulang page: category2 */
:root{
      --ink:#123638;--ink-soft:#275456;--orange:#e76036;--orange-dark:#c94724;--mint:#4f9185;
      --cream:#f8f4ec;--paper:#fffdf9;--sand:#eee6d9;--line:#ddd5c8;--text:#193436;--muted:#687779;
      --white:#fff;--radius:16px;--radius-sm:10px;--shadow:0 14px 38px rgba(29,50,49,.09);
      --shadow-small:0 7px 18px rgba(29,50,49,.08);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--cream);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease}
    button{font:inherit} img{max-width:100%;display:block}
    button:focus-visible,a:focus-visible{outline:3px solid rgba(231,96,54,.38);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{height:74px;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);line-height:1.15;min-width:190px}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:14px;box-shadow:0 6px 14px rgba(231,96,54,.28)}
    .brand-text small{display:block;font-size:10px;letter-spacing:.12em;color:var(--mint);font-weight:800;margin-top:3px}
    .desktop-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
    .desktop-nav a{font-size:14px;font-weight:700;color:#496062;padding:24px 0 21px;position:relative;white-space:nowrap}
    .desktop-nav a:after{content:"";height:2px;position:absolute;bottom:16px;left:0;right:0;background:var(--orange);transform:scaleX(0);transition:transform .2s ease}
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--ink)}
    .desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:14px;margin-left:6px}
    .text-link{font-weight:700;color:var(--ink-soft);font-size:13px}
    .text-link:hover{color:var(--orange)}
    .btn{border:0;display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;cursor:pointer;letter-spacing:.01em}
    .btn-primary{background:var(--orange);color:#fff;box-shadow:0 9px 18px rgba(231,96,54,.22)}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
    .btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#0d282a;transform:translateY(-2px)}
    .btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}.btn-outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--paper);border-radius:9px;color:var(--ink);font-size:20px}
    .mobile-panel{display:none}
    .page-hero{background:var(--paper);border-bottom:1px solid var(--line);padding:45px 0 52px;position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;width:360px;height:360px;border:55px solid #f2e4d4;border-radius:50%;right:-145px;top:-185px}
    .breadcrumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:26px;position:relative;z-index:1}
    .breadcrumb a:hover{color:var(--orange)}.crumb-dot{color:#b7aaa0}
    .page-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 270px;gap:55px;align-items:end}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;letter-spacing:.12em;font-weight:800}
    .eyebrow:before{content:"";width:28px;height:2px;background:currentColor}
    h1,h2,h3,p{margin-top:0}h1{font-size:clamp(32px,4vw,52px);line-height:1.2;letter-spacing:-.035em;color:var(--ink);margin:12px 0 16px;font-weight:850}
    h2{font-size:clamp(25px,3vw,35px);line-height:1.3;letter-spacing:-.025em;color:var(--ink);margin:0}
    h3{font-size:18px;line-height:1.42;color:var(--ink);margin-bottom:7px}
    .hero-copy{max-width:690px;font-size:16px;color:#536568;margin:0}
    .hero-meta{margin-top:23px;display:flex;gap:10px;flex-wrap:wrap}.tag{display:inline-flex;align-items:center;min-height:28px;border:1px solid var(--line);border-radius:100px;padding:2px 11px;font-size:12px;font-weight:800;color:var(--ink-soft);background:#fff}
    .tag.mint{background:#e5f0ec;border-color:#c5ddd5;color:#2e7267}.tag.orange{background:#fff0e9;border-color:#f4c5b4;color:#bd492c}
    .hero-stamp{width:245px;height:205px;background:var(--ink);border-radius:var(--radius);color:#fff;padding:25px;position:relative;box-shadow:var(--shadow);overflow:hidden}
    .hero-stamp:after{content:"";width:122px;height:122px;border:18px solid rgba(255,255,255,.1);border-radius:50%;position:absolute;right:-43px;bottom:-44px}
    .stamp-label{font-size:11px;letter-spacing:.14em;color:#ffab8c;font-weight:800}.stamp-number{font-size:48px;line-height:1;font-weight:900;color:#fff;margin:17px 0 5px}.stamp-text{font-size:13px;color:#c6d6d2}
    .section{padding:80px 0}.section.alt{background:var(--paper);border-top:1px solid #eee7dc;border-bottom:1px solid #eee7dc}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:31px}.section-intro{margin:0;max-width:480px;color:var(--muted);font-size:14px}
    .download-hero{background:var(--ink);border-radius:var(--radius);padding:45px 50px;display:grid;grid-template-columns:1fr 370px;align-items:center;gap:50px;position:relative;overflow:hidden;color:#fff}
    .download-hero:before{content:"";width:410px;height:410px;border:1px solid rgba(255,255,255,.12);border-radius:50%;position:absolute;right:-175px;top:-175px}
    .download-hero h2{color:#fff;font-size:36px;margin:11px 0}.download-hero p{color:#c5d3d1;max-width:570px;margin-bottom:25px}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap}.download-actions .btn-outline{border-color:rgba(255,255,255,.32);color:#fff}.download-actions .btn-outline:hover{border-color:#ff9b79;color:#ffb69b}
    .device-card{height:260px;position:relative;display:flex;align-items:center;justify-content:center}
    .phone{width:154px;height:250px;background:#f8f2e9;border:7px solid #09292b;border-radius:27px;box-shadow:0 20px 28px rgba(0,0,0,.3);padding:14px 10px;position:relative;z-index:2}
    .phone:before{content:"";position:absolute;width:52px;height:6px;border-radius:20px;background:#09292b;left:50%;top:5px;transform:translateX(-50%)}
    .phone-screen{height:100%;border-radius:16px;background:#f2dfd1;padding:23px 11px 10px;color:var(--ink);overflow:hidden}
    .phone-kicker{font-size:8px;font-weight:800;color:var(--orange);letter-spacing:.08em}.phone-screen b{font-size:17px;display:block;line-height:1.25;margin:5px 0 13px}.screen-card{height:54px;background:#fff;border-radius:8px;margin:8px 0;padding:8px}.screen-card i{display:block;width:46px;height:5px;background:var(--orange);border-radius:5px;margin-bottom:7px}.screen-card span{display:block;width:80%;height:4px;background:#d5e0dd;border-radius:5px}
    .device-orbit{position:absolute;width:215px;height:215px;border:1px dashed rgba(255,255,255,.3);border-radius:50%;z-index:1}.device-dot{position:absolute;background:#e76036;width:13px;height:13px;border-radius:50%;right:54px;top:22px}
    .platform-list{display:grid;grid-template-columns:1.18fr 1fr 1fr;gap:16px}.platform-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow-small);min-height:246px;display:flex;flex-direction:column}
    .platform-card.featured{background:#fff5ef;border-color:#edb39e}.platform-top{display:flex;justify-content:space-between;gap:10px;align-items:start}.platform-icon{width:43px;height:43px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:900}.platform-card.featured .platform-icon{background:var(--orange)}
    .platform-card p{font-size:13px;color:var(--muted);margin:10px 0 18px}.platform-data{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:#5b6d6e;display:flex;justify-content:space-between;gap:8px}.platform-data b{color:var(--ink)}
    .platform-card .btn{margin-top:16px;width:100%}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.step{padding:27px 22px 28px 0;border-right:1px solid var(--line)}.step+ .step{padding-left:22px}.step:last-child{border-right:0}.step-num{font-size:13px;font-weight:900;color:var(--orange);letter-spacing:.08em}.step p{font-size:13px;color:var(--muted);margin:0}
    .compat-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:26px}.compat-note{background:#e4efeb;border-radius:var(--radius);padding:32px}.compat-note h3{font-size:23px}.compat-note p{font-size:14px;color:#52706c;margin-bottom:0}
    .compat-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper)}.compat-row{display:grid;grid-template-columns:150px 1fr;border-bottom:1px solid var(--line)}.compat-row:last-child{border-bottom:0}.compat-row b{padding:16px 20px;background:#f6f1e8;color:var(--ink);font-size:14px}.compat-row span{padding:16px 20px;color:#596b6d;font-size:14px}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:68px}.faq-intro p{color:var(--muted);margin:14px 0 0}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;text-align:left;border:0;background:transparent;cursor:pointer;padding:20px 36px 20px 0;color:var(--ink);font-size:16px;font-weight:800;position:relative}.faq-question:after{content:"+";position:absolute;right:5px;top:19px;color:var(--orange);font-size:22px;font-weight:400;line-height:1}.faq-item.open .faq-question:after{content:"−"}.faq-answer{display:none;padding:0 30px 20px 0;color:var(--muted);font-size:14px}.faq-item.open .faq-answer{display:block}
    .access-strip{border:1px solid var(--line);background:var(--paper);border-radius:var(--radius);padding:31px 35px;display:flex;justify-content:space-between;align-items:center;gap:28px}.access-strip h2{font-size:27px;margin-bottom:7px}.access-strip p{margin:0;color:var(--muted);font-size:14px;max-width:680px}
    .site-footer{background:var(--ink);color:#d5e0de;padding:56px 0 20px;border-top:4px solid var(--orange)}.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:58px;padding-bottom:37px}.footer-brand>div{display:flex;align-items:center;gap:10px;color:#fff}.footer-brand .brand-mark{display:inline-grid}.footer-brand p{font-size:13px;line-height:1.8;color:#afc3bf;margin:16px 0 0;max-width:390px}.footer-title{font-size:13px;color:#ffab8c;font-weight:800;letter-spacing:.08em;margin-bottom:14px}.footer-links{display:grid;grid-template-columns:repeat(2,max-content);gap:9px 22px}.footer-links a,.footer-info{font-size:13px;color:#c5d4d1}.footer-links a:hover,.footer-info a:hover{color:#ffab8c}.footer-bottom{padding-top:19px;border-top:1px solid rgba(255,255,255,.15);display:flex;justify-content:space-between;gap:18px;font-size:12px;color:#91aaa5}
    @media(max-width:1100px){.desktop-nav{gap:14px}.header-actions .text-link{display:none}.download-hero{grid-template-columns:1fr 285px}.platform-list{grid-template-columns:repeat(3,1fr)}}
    @media(max-width:900px){.desktop-nav,.header-actions{display:none}.menu-toggle{display:block}.mobile-panel{position:absolute;top:74px;left:0;right:0;background:var(--paper);padding:13px 24px 22px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);z-index:49}.mobile-panel.show{display:grid;gap:3px}.mobile-panel a:not(.btn){font-weight:800;padding:10px 0;color:var(--ink)}.mobile-panel .btn{margin-top:8px}.page-hero-grid{grid-template-columns:1fr}.hero-stamp{display:none}.download-hero{grid-template-columns:1fr}.device-card{display:none}.platform-list{grid-template-columns:1fr}.platform-card{min-height:auto}.steps{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step:nth-child(3){padding-left:0;border-top:1px solid var(--line)}.step:nth-child(4){border-top:1px solid var(--line)}.compat-grid,.faq-layout{grid-template-columns:1fr;gap:28px}.footer-grid{grid-template-columns:1fr 1fr;gap:35px}.footer-grid>div:first-child{grid-column:1/-1}}
    @media(max-width:600px){body{font-size:14px}.container{width:min(calc(100% - 32px),var(--container))}.site-header{height:68px}.mobile-panel{top:68px;padding-left:16px;padding-right:16px}.brand{min-width:0}.brand-text{font-size:14px}.page-hero{padding:32px 0 37px}.breadcrumb{margin-bottom:18px}h1{font-size:32px}.section{padding:58px 0}.section-head{display:block;margin-bottom:24px}.section-intro{margin-top:11px}.download-hero{padding:31px 25px;border-radius:13px}.download-hero h2{font-size:28px}.platform-list{gap:12px}.platform-card{padding:21px}.steps{display:block}.step,.step+.step{padding:21px 0;border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.compat-row{grid-template-columns:108px 1fr}.compat-row b,.compat-row span{padding:13px 12px;font-size:13px}.access-strip{padding:26px;display:block}.access-strip .btn{margin-top:19px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin:4px 0}.footer-links{grid-template-columns:repeat(2,max-content)}}

/* roulang page: category3 */
:root{
      --ink:#123638;
      --ink-soft:#275456;
      --orange:#e76036;
      --orange-dark:#c94724;
      --mint:#4f9185;
      --cream:#f8f4ec;
      --paper:#fffdf9;
      --sand:#eee6d9;
      --line:#ddd5c8;
      --text:#193436;
      --muted:#687779;
      --white:#fff;
      --radius:16px;
      --radius-sm:10px;
      --shadow:0 14px 38px rgba(29,50,49,.09);
      --shadow-small:0 7px 18px rgba(29,50,49,.08);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--cream);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(231,96,54,.38);outline-offset:3px}
    button{font:inherit}
    img{max-width:100%;display:block}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{height:74px;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);line-height:1.15;min-width:190px}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:14px;box-shadow:0 6px 14px rgba(231,96,54,.28)}
    .brand-text small{display:block;font-size:10px;letter-spacing:.12em;color:var(--mint);font-weight:800;margin-top:3px}
    .desktop-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
    .desktop-nav a{font-size:14px;font-weight:700;color:#496062;padding:24px 0 21px;position:relative;white-space:nowrap}
    .desktop-nav a:after{content:"";height:2px;position:absolute;bottom:16px;left:0;right:0;background:var(--orange);transform:scaleX(0);transition:transform .2s ease}
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--ink)}
    .desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:14px;margin-left:6px}
    .text-link{font-weight:700;color:var(--ink-soft);font-size:13px}
    .text-link:hover{color:var(--orange)}
    .btn{border:0;display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;cursor:pointer;letter-spacing:.01em}
    .btn-primary{background:var(--orange);color:#fff;box-shadow:0 9px 18px rgba(231,96,54,.22)}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);color:#fff}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#0d282a;transform:translateY(-2px);color:#fff}
    .btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--paper);border-radius:9px;color:var(--ink);font-size:20px}
    .mobile-panel{display:none}
    .page-hero{background:var(--paper);padding:58px 0 54px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;width:270px;height:270px;border-radius:50%;right:-90px;top:-105px;background:#f2dfd1}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:22px;position:relative;z-index:1}
    .breadcrumb a:hover{color:var(--orange)}
    .breadcrumb span{color:#b4aaa0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;letter-spacing:.12em;font-weight:800;position:relative;z-index:1}
    .eyebrow:before{content:"";width:28px;height:2px;background:currentColor}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,60px);line-height:1.16;letter-spacing:-.04em;color:var(--ink);margin:14px 0 18px;font-weight:900;position:relative;z-index:1}
    h2{font-size:clamp(25px,3vw,36px);line-height:1.25;color:var(--ink);letter-spacing:-.025em;margin-bottom:12px}
    h3{font-size:18px;line-height:1.4;color:var(--ink);margin-bottom:8px}
    .page-lead{max-width:720px;color:#58696a;font-size:17px;margin:0;position:relative;z-index:1}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-intro{max-width:520px;color:var(--muted);margin:0;font-size:14px}
    .guide-index{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .index-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px 24px;display:flex;align-items:center;gap:18px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
    .index-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-small);border-color:#d5b3a3}
    .index-num{font-size:25px;font-weight:900;color:var(--orange);min-width:42px}
    .index-item strong{display:block;color:var(--ink);font-size:16px;margin-bottom:3px}
    .index-item span{color:var(--muted);font-size:13px}
    .steps-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:58px;align-items:start}
    .steps-intro{background:var(--ink);color:white;border-radius:var(--radius);padding:34px;position:sticky;top:104px}
    .steps-intro h2{color:#fff}
    .steps-intro p{color:#c2d0ce;font-size:14px;margin-bottom:24px}
    .step-line{border-left:1px solid #d8cfc2;margin-left:15px}
    .step{position:relative;padding:0 0 31px 38px}
    .step:last-child{padding-bottom:0}
    .step:before{content:"";position:absolute;width:13px;height:13px;border-radius:50%;background:var(--orange);border:4px solid var(--cream);left:-7px;top:5px;box-shadow:0 0 0 1px var(--orange)}
    .step-label{color:var(--orange);font-size:12px;font-weight:900;letter-spacing:.12em}
    .step p{color:var(--muted);font-size:14px;margin:0}
    .access-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .access-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:30px;min-height:220px;position:relative;overflow:hidden}
    .access-card:after{content:"";position:absolute;right:-35px;bottom:-55px;width:150px;height:150px;border-radius:50%;background:#f3e7dc}
    .access-card > *{position:relative;z-index:1}
    .access-icon{width:43px;height:43px;border-radius:12px;background:#f8dfd3;color:var(--orange);display:grid;place-items:center;font-weight:900;font-size:18px;margin-bottom:20px}
    .access-card p{color:var(--muted);font-size:14px;margin-bottom:0;max-width:400px}
    .compare-wrap{overflow-x:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}
    .compare-table{width:100%;border-collapse:collapse;min-width:620px}
    .compare-table th,.compare-table td{text-align:left;padding:18px 22px;border-bottom:1px solid var(--line);vertical-align:top}
    .compare-table th{background:#f4eee5;color:var(--ink);font-size:13px}
    .compare-table td{color:var(--muted);font-size:14px}
    .compare-table tr:last-child td{border-bottom:0}
    .compare-table td:first-child{color:var(--ink);font-weight:800;width:23%}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .faq-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 20px}
    .faq-item summary{cursor:pointer;list-style:none;padding:19px 28px 19px 0;color:var(--ink);font-weight:800;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:0;top:15px;font-size:22px;color:var(--orange);font-weight:400}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{color:var(--muted);font-size:14px;padding:0 0 19px;margin:0}
    .notice-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
    .notice-card{padding:30px;background:var(--sand);border-radius:var(--radius);border:1px solid #e2d7c8}
    .notice-card.dark{background:var(--ink);color:#fff;border-color:var(--ink)}
    .notice-card.dark h3{color:#fff}
    .notice-card p{color:var(--muted);font-size:14px;margin-bottom:20px}
    .notice-card.dark p{color:#c5d1cf}
    .tag{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border-radius:20px;background:#e5f0ed;color:var(--mint);font-size:11px;font-weight:800}
    .cta-band{padding:48px 0;background:var(--ink);color:#fff}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta-inner h2{color:#fff;margin-bottom:8px}
    .cta-inner p{color:#c4d0ce;margin:0;font-size:14px}
    .site-footer{background:var(--ink);color:#fff;border-top:3px solid var(--orange);padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr 1fr;gap:60px;padding-bottom:38px}
    .footer-brand b{margin-left:10px;font-size:16px}
    .footer-brand p{color:#b8c8c5;font-size:13px;max-width:430px;margin:18px 0 0}
    .footer-title{font-size:13px;color:#fff;font-weight:800;margin-bottom:15px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:13px;color:#b8c8c5}
    .footer-links a:hover,.footer-info a:hover{color:#ff9a78}
    .footer-info{color:#b8c8c5;font-size:13px;line-height:2}
    .footer-info a{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#93aaa6;font-size:12px}
    @media (max-width:1024px){
      .desktop-nav{gap:14px}
      .desktop-nav a{font-size:13px}
      .header-actions .text-link{display:none}
      .steps-layout{gap:30px}
      .footer-grid{gap:30px}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 36px),var(--container))}
      .site-header{height:68px}
      .desktop-nav,.header-actions{display:none}
      .menu-toggle{display:block}
      .mobile-panel{position:absolute;display:none;left:0;right:0;top:68px;padding:18px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;gap:2px}
      .mobile-panel.open{display:flex}
      .mobile-panel a:not(.btn){padding:12px 4px;border-bottom:1px solid var(--line);font-weight:700;color:var(--ink)}
      .mobile-panel .btn{margin-top:12px}
      .page-hero{padding:42px 0}
      .section{padding:55px 0}
      .section-head{display:block;margin-bottom:23px}
      .section-intro{margin-top:12px}
      .guide-index,.access-grid,.faq-list,.notice-grid{grid-template-columns:1fr}
      .steps-layout{grid-template-columns:1fr}
      .steps-intro{position:static}
      .cta-inner{display:block}
      .cta-inner .btn{margin-top:20px}
      .footer-grid{grid-template-columns:1fr;gap:30px}
    }
    @media (max-width:520px){
      h1{font-size:36px}
      .page-lead{font-size:15px}
      .index-item{padding:17px}
      .index-num{font-size:21px;min-width:35px}
      .access-card,.notice-card{padding:24px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-bottom:6px}
    }

/* roulang page: category4 */
:root{
      --ink:#123638;--ink-soft:#275456;--orange:#e76036;--orange-dark:#c94724;
      --mint:#4f9185;--cream:#f8f4ec;--paper:#fffdf9;--sand:#eee6d9;
      --line:#ddd5c8;--text:#193436;--muted:#687779;--white:#fff;
      --radius:16px;--radius-sm:10px;--shadow:0 14px 38px rgba(29,50,49,.09);
      --shadow-small:0 7px 18px rgba(29,50,49,.08);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--cream);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:15px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(231,96,54,.35);outline-offset:3px}
    img{display:block;max-width:100%}
    button{font:inherit}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{height:74px;background:rgba(255,253,249,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .header-inner{height:100%;display:flex;align-items:center;gap:25px}
    .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);line-height:1.15;min-width:190px}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:14px;box-shadow:0 6px 14px rgba(231,96,54,.28)}
    .brand-text small{display:block;font-size:10px;letter-spacing:.12em;color:var(--mint);font-weight:800;margin-top:3px}
    .desktop-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
    .desktop-nav a{font-size:14px;font-weight:700;color:#496062;padding:24px 0 21px;position:relative;white-space:nowrap}
    .desktop-nav a:after{content:"";height:2px;position:absolute;bottom:16px;left:0;right:0;background:var(--orange);transform:scaleX(0);transition:transform .2s ease}
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--ink)}
    .desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:14px;margin-left:6px}
    .text-link{font-weight:700;color:var(--ink-soft);font-size:13px}
    .text-link:hover{color:var(--orange)}
    .btn{border:0;display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;cursor:pointer;letter-spacing:.01em}
    .btn-primary{background:var(--orange);color:#fff;box-shadow:0 9px 18px rgba(231,96,54,.22)}
    .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#0d282a;color:#fff;transform:translateY(-2px)}
    .btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--paper);border-radius:9px;color:var(--ink);font-size:20px}
    .mobile-panel{display:none}
    .page-head{padding:62px 0 54px;background:var(--paper);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-head:after{content:"更新 / 04";position:absolute;right:5%;bottom:-20px;color:#f0e6d9;font-size:92px;font-weight:900;letter-spacing:-.08em;line-height:1}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:25px;position:relative;z-index:1}
    .breadcrumb a:hover{color:var(--orange)}
    .breadcrumb span:last-child{color:var(--ink);font-weight:700}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;letter-spacing:.12em;font-weight:800;position:relative;z-index:1}
    .eyebrow:before{content:"";width:28px;height:2px;background:currentColor}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,62px);letter-spacing:-.045em;line-height:1.13;color:var(--ink);margin:15px 0 18px;max-width:760px;position:relative;z-index:1}
    h2{font-size:clamp(26px,3vw,38px);letter-spacing:-.03em;line-height:1.25;color:var(--ink);margin-bottom:12px}
    h3{font-size:19px;line-height:1.4;color:var(--ink);margin-bottom:8px}
    .lead{max-width:690px;color:var(--muted);font-size:17px;margin-bottom:0;position:relative;z-index:1}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-intro{max-width:480px;color:var(--muted);font-size:14px;margin:0}
    .update-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:27px;position:relative;z-index:1}
    .badge{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:30px;background:#f5e2d7;color:var(--orange-dark);font-size:12px;font-weight:800}
    .badge.mint{background:#dcece7;color:#306c66}
    .current-card{background:var(--ink);color:#fff;border-radius:var(--radius);padding:35px 40px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;box-shadow:var(--shadow)}
    .current-card h2{color:#fff;margin-bottom:7px}
    .current-card p{color:#bfd0cd;margin:0}
    .version-number{font-size:56px;line-height:1;font-weight:900;color:#ffd0bf;letter-spacing:-.06em}
    .version-label{color:#a9c1bd;font-size:12px;text-align:right;margin-top:8px}
    .filter-row{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
    .filter-tag{border:1px solid var(--line);background:var(--paper);border-radius:30px;padding:8px 15px;color:var(--ink-soft);font-size:13px;font-weight:700}
    .filter-tag.active,.filter-tag:hover{border-color:var(--orange);background:#fff1e9;color:var(--orange-dark)}
    .timeline{position:relative;margin-left:18px;border-left:1px solid #cfc5b7}
    .timeline-item{position:relative;padding:0 0 35px 38px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;left:-7px;top:6px;width:13px;height:13px;border-radius:50%;background:var(--orange);border:3px solid var(--cream)}
    .timeline-top{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:8px}
    .timeline-date{font-size:13px;color:var(--muted);font-weight:700}
    .timeline-item h3{margin-bottom:5px}
    .timeline-item p{color:var(--muted);font-size:14px;margin-bottom:12px;max-width:760px}
    .detail-link{color:var(--orange-dark);font-size:13px;font-weight:800}
    .detail-link:hover{color:var(--ink)}
    .updates-layout{display:grid;grid-template-columns:1fr .72fr;gap:58px;align-items:start}
    .archive{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .archive-row{display:grid;grid-template-columns:100px 115px 1fr;gap:18px;padding:20px 22px;border-bottom:1px solid var(--line);align-items:start}
    .archive-row:last-child{border-bottom:0}
    .archive-row strong{color:var(--orange-dark);font-size:15px}
    .archive-row time{font-size:13px;color:var(--muted)}
    .archive-row span{font-size:14px;color:var(--text)}
    .notice-card{background:#f3eadf;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
    .notice-card ul{padding:0;margin:20px 0 0;list-style:none}
    .notice-card li{padding:12px 0;border-top:1px solid #ded1c1;color:var(--ink-soft);font-size:14px}
    .notice-card li:before{content:"✓";color:var(--orange);font-weight:900;margin-right:10px}
    .updates-list{display:grid;gap:14px}
    .update-item{display:grid;grid-template-columns:106px 1fr auto;gap:18px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 20px;transition:transform .2s,box-shadow .2s}
    .update-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-small)}
    .update-date{color:var(--muted);font-size:13px}
    .update-item h3{font-size:16px;margin:0 0 3px}
    .update-item p{font-size:13px;color:var(--muted);margin:0}
    .empty-state{padding:28px;text-align:center;background:var(--paper);border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted)}
    .compatibility{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .compatibility table{width:100%;border-collapse:collapse}
    .compatibility th,.compatibility td{text-align:left;padding:17px 20px;border-bottom:1px solid var(--line);font-size:14px}
    .compatibility th{background:#f1e9dd;color:var(--ink);font-size:13px}
    .compatibility tr:last-child td{border-bottom:0}
    .compatibility td:first-child{font-weight:800;color:var(--ink-soft)}
    .cta{padding:58px 0;background:var(--ink);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{color:#fff;margin-bottom:8px}
    .cta p{color:#b9ceca;margin:0}
    .site-footer{background:#0d292b;color:#dbe5e2;padding:58px 0 22px;border-top:4px solid var(--orange)}
    .footer-grid{display:grid;grid-template-columns:1.4fr .7fr 1fr;gap:55px;padding-bottom:42px}
    .footer-brand>div{display:flex;align-items:center;gap:11px;color:#fff;font-size:16px}
    .footer-brand p{color:#9eb4b0;font-size:13px;max-width:390px;margin:16px 0 0}
    .footer-title{color:#fff;font-weight:800;margin-bottom:14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a,.footer-info{color:#9eb4b0;font-size:13px}
    .footer-links a:hover,.footer-info a:hover{color:#ffb29d}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:19px;display:flex;justify-content:space-between;gap:20px;color:#819995;font-size:12px}
    @media(max-width:992px){
      .desktop-nav{gap:14px}.header-actions .text-link{display:none}
      .updates-layout{grid-template-columns:1fr;gap:35px}.hero-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:35px}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 36px),var(--container))}
      .site-header{height:68px}.desktop-nav,.header-actions{display:none}
      .menu-toggle{display:block;margin-left:auto}
      .mobile-panel{position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 18px 20px;box-shadow:var(--shadow);display:none}
      .mobile-panel.open{display:grid;gap:0}
      .mobile-panel>a:not(.btn){padding:13px 4px;border-bottom:1px solid var(--line);font-weight:700;color:var(--ink-soft)}
      .mobile-panel .btn{margin-top:15px}
      .page-head{padding:43px 0 40px}.page-head:after{font-size:55px}
      .section{padding:56px 0}.section-head{display:block;margin-bottom:24px}.section-intro{margin-top:10px}
      .current-card{grid-template-columns:1fr;padding:28px}.version-number{font-size:43px}.version-label{text-align:left}
      .update-item{grid-template-columns:1fr;gap:5px}.update-item .detail-link{margin-top:7px}
      .archive-row{grid-template-columns:80px 1fr;gap:7px 15px}.archive-row span{grid-column:2}
      .cta-inner{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:480px){
      h1{font-size:37px}.lead{font-size:15px}.breadcrumb{font-size:12px}
      .timeline{margin-left:8px}.timeline-item{padding-left:27px}
      .compatibility{overflow-x:auto}.compatibility table{min-width:510px}
    }