/* roulang page: index */
:root{
  --ink:#1d2925;
  --muted:#617069;
  --green:#17443c;
  --green-dark:#10362f;
  --sage:#e4ece4;
  --mist:#f6f5ef;
  --white:#fffefa;
  --orange:#e88752;
  --orange-soft:#f8dfd0;
  --line:#d6ded6;
  --shadow:0 14px 38px rgba(23,68,60,.08);
  --shadow-sm:0 7px 22px rgba(23,68,60,.07);
  --radius:18px;
  --radius-sm:11px;
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--mist);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.78}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(232,135,82,.5);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:88px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--orange)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,4vw,49px);line-height:1.18;letter-spacing:-.045em}
h2{font-size:clamp(27px,3vw,35px);line-height:1.28;letter-spacing:-.035em;margin-bottom:8px}
h3{font-size:20px;line-height:1.4;margin-bottom:8px}
.lead{color:var(--muted);font-size:17px;max-width:680px;line-height:1.85;margin-bottom:0}
.small{font-size:13px;color:var(--muted)}
.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:10px 18px;border:1px solid transparent;border-radius:11px;font-size:15px;font-weight:800;transition:.22s ease}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,68,60,.2)}
.btn-secondary{border-color:var(--line);background:rgba(255,255,255,.42);color:var(--green)}
.btn-secondary:hover{background:var(--sage);border-color:#b8cbbd;transform:translateY(-2px)}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:#cf7040;transform:translateY(-2px)}
.badge{display:inline-flex;align-items:center;padding:3px 9px;border-radius:99px;background:var(--sage);color:var(--green);font-size:12px;font-weight:800}
.badge.orange{background:var(--orange-soft);color:#9c4c24}
.site-header{position:sticky;top:0;z-index:30;background:rgba(246,245,239,.9);border-bottom:1px solid transparent;backdrop-filter:blur(12px);transition:.2s}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 5px 16px rgba(23,68,60,.06)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;min-width:205px;color:var(--green);font-weight:900;font-size:15px;line-height:1.25}
.brand-mark{position:relative;width:34px;height:34px;border-radius:11px;background:var(--green);display:grid;place-items:center;flex:none}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:#fff;border-radius:2px}
.brand-mark:before{width:13px;height:5px;top:9px;left:10px}
.brand-mark:after{width:5px;height:12px;bottom:7px;right:8px;background:var(--orange)}
.nav{display:flex;align-items:center;justify-content:center;gap:3px}
.nav a{position:relative;padding:9px 10px;font-size:14px;font-weight:750;color:#48554f;border-radius:9px;white-space:nowrap}
.nav a:hover{background:var(--sage);color:var(--green)}
.nav a.active{color:var(--green)}
.nav a.active:after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:3px;background:var(--orange)}
.header-download{white-space:nowrap}
.menu-toggle{display:none;background:none;border:0;color:var(--green);padding:10px;font-size:23px}
.hero{padding:54px 0 42px;overflow:hidden}
.hero-shell{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:38px;min-height:505px;padding:62px;background:var(--sage);border:1px solid #d2ddd1;border-radius:28px;overflow:hidden}
.hero-shell:before{content:"";position:absolute;width:310px;height:310px;border:1px solid rgba(23,68,60,.13);border-radius:50%;right:-98px;top:-128px}
.hero-shell:after{content:"";position:absolute;width:180px;height:180px;background-image:radial-gradient(rgba(23,68,60,.22) 1.5px,transparent 1.5px);background-size:13px 13px;left:46%;bottom:-40px}
.hero-copy{position:relative;z-index:1;align-self:center}
.hero-copy h1{max-width:650px;margin:13px 0 18px}
.hero-copy .lead{max-width:590px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:27px}
.hero-note{display:flex;align-items:center;gap:9px;margin-top:20px;font-size:13px;color:var(--muted)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--orange)}
.device-stage{position:relative;z-index:1;min-height:370px}
.phone{position:absolute;right:16%;bottom:-21px;width:235px;height:432px;padding:11px;background:#183c35;border:7px solid #183c35;border-radius:35px;box-shadow:0 24px 42px rgba(23,68,60,.22);transform:rotate(4deg)}
.phone:before{content:"";width:74px;height:17px;position:absolute;z-index:2;top:8px;left:50%;transform:translateX(-50%);background:#183c35;border-radius:0 0 12px 12px}
.screen{height:100%;overflow:hidden;border-radius:22px;background:#f9f7ef;padding:30px 13px 14px}
.screen-top{display:flex;justify-content:space-between;align-items:center;font-size:9px;color:var(--muted);margin-bottom:17px}
.screen-logo{font-size:12px;font-weight:900;color:var(--green)}
.screen-main{height:147px;border-radius:15px;background:var(--green);padding:17px;color:white;position:relative;overflow:hidden}
.screen-main:after{content:"";position:absolute;width:100px;height:100px;border:1px solid rgba(255,255,255,.3);border-radius:50%;right:-35px;bottom:-38px}
.pixel{display:grid;grid-template-columns:repeat(4,7px);gap:4px;margin-top:17px}
.pixel i{width:7px;height:7px;background:var(--orange);border-radius:2px}
.pixel i:nth-child(2n){background:#d8e6dc}.pixel i:nth-child(3n){background:white}
.screen-main strong{display:block;font-size:18px;line-height:1.2;position:relative;z-index:1}
.screen-main span{display:block;margin-top:8px;font-size:10px;opacity:.8}
.screen-list{display:grid;gap:8px;margin-top:12px}
.screen-row{height:39px;display:flex;align-items:center;gap:8px;padding:6px;border:1px solid #e1e6df;border-radius:10px;font-size:9px;color:var(--muted)}
.screen-icon{width:27px;height:27px;border-radius:8px;background:var(--orange-soft)}
.screen-line{height:5px;background:#dae4da;border-radius:5px;width:76px}
.screen-line.short{width:46px;margin-top:4px}
.float-tag{position:absolute;padding:10px 12px;background:var(--white);border:1px solid #d7e0d6;border-radius:12px;box-shadow:var(--shadow-sm);font-size:12px;font-weight:800;color:var(--green)}
.float-tag span{display:block;margin-top:2px;color:var(--muted);font-size:11px;font-weight:500}
.tag-one{right:0;top:50px}.tag-two{left:4%;bottom:64px}.tag-three{right:2%;bottom:2px}
.quick-wrap{padding-top:18px}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);background:var(--white);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow-sm)}
.quick-item{display:flex;gap:13px;padding:21px;border-right:1px solid var(--line);transition:.2s}
.quick-item:last-child{border-right:0}
.quick-item:hover{background:#f3f6f1}
.q-num{color:var(--orange);font-size:13px;font-weight:900}
.quick-item strong{display:block;color:var(--green);font-size:15px}
.quick-item span{display:block;color:var(--muted);font-size:12px;line-height:1.55;margin-top:2px}
.sim-grid{display:grid;grid-template-columns:1.18fr .82fr .82fr;grid-template-rows:180px 180px;gap:16px}
.sim-card{position:relative;min-height:0;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);overflow:hidden;transition:.25s}
.sim-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9cdbb}
.sim-feature{grid-row:span 2;background:var(--green);color:#fff;padding:32px}
.sim-feature:after{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(255,255,255,.16);border-radius:50%;right:-70px;bottom:-110px}
.sim-feature h3{font-size:28px;position:relative;z-index:1}
.sim-feature p{position:relative;z-index:1;color:rgba(255,255,255,.75);max-width:300px;font-size:14px}
.sim-feature .btn{position:absolute;z-index:1;bottom:28px;left:32px;background:#fff;color:var(--green)}
.sim-icon{position:absolute;right:18px;bottom:15px;width:65px;height:65px;border-radius:18px;background:var(--sage)}
.sim-card h3{font-size:18px;margin-top:16px}
.sim-card p{font-size:13px;color:var(--muted);margin-bottom:13px}
.card-foot{display:flex;justify-content:space-between;align-items:center;gap:8px}
.text-link{color:var(--green);font-size:13px;font-weight:850}
.text-link:hover{color:#b75727}
.download-band{display:grid;grid-template-columns:1fr .92fr;gap:38px;align-items:center;padding:50px;border-radius:24px;background:#f1ede1;border:1px solid #e4dcc8;overflow:hidden}
.download-cards{display:grid;gap:12px;margin-top:22px}
.download-card{display:grid;grid-template-columns:45px 1fr auto;gap:14px;align-items:center;padding:14px;border-radius:14px;background:var(--white);border:1px solid #e2ddd1}
.app-icon{width:45px;height:45px;border-radius:13px;background:var(--green);position:relative}
.app-icon:after{content:"";position:absolute;inset:12px;background:var(--orange);border-radius:5px}
.download-card strong{display:block;font-size:15px}
.download-card .small{line-height:1.5}
.download-visual{position:relative;height:320px}
.panel{position:absolute;border:1px solid #d6ded6;background:var(--white);border-radius:19px;box-shadow:var(--shadow)}
.panel-a{width:270px;height:245px;right:44px;top:18px;padding:22px;transform:rotate(5deg)}
.panel-b{width:220px;height:206px;left:0;bottom:0;padding:18px;transform:rotate(-6deg);background:#dce9de}
.panel-title{font-size:13px;color:var(--green);font-weight:900}
.bar{height:10px;border-radius:7px;background:#dce6dc;margin-top:13px}.bar.w1{width:90%}.bar.w2{width:66%}.bar.orange{width:42%;background:var(--orange)}
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:20px}.mini-grid i{height:47px;border-radius:9px;background:var(--sage)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{padding:26px 28px 29px;border-right:1px solid var(--line);position:relative}
.step:last-child{border:0}
.step-num{display:block;color:var(--orange);font-weight:900;font-size:13px;margin-bottom:12px}
.step h3{color:var(--green)}
.step p{font-size:14px;color:var(--muted);margin-bottom:0}
.scene-scroll{display:flex;gap:16px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}
.scene-card{min-width:250px;flex:1;padding:22px;border-radius:var(--radius);background:var(--white);border:1px solid var(--line)}
.scene-symbol{width:42px;height:42px;border-radius:12px;background:var(--orange-soft);display:grid;place-items:center;color:#a54e22;font-weight:900;margin-bottom:18px}
.scene-card p{font-size:13px;color:var(--muted);margin-bottom:0}
.mechanism{display:grid;grid-template-columns:.8fr 1.2fr;gap:16px}
.mechanism-intro{padding:34px;background:var(--green);color:#fff;border-radius:var(--radius)}
.mechanism-intro p{color:rgba(255,255,255,.75);font-size:14px}
.mechanism-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mechanism-item{padding:21px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}
.mechanism-item b{display:block;color:var(--orange);font-size:12px;margin-bottom:10px}
.mechanism-item p{font-size:13px;color:var(--muted);margin:0}
.compat-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:25px;padding:34px;border-radius:var(--radius);background:var(--white);border:1px solid var(--line)}
.compat-list{display:grid;grid-template-columns:repeat(2,1fr);gap:11px;margin-top:18px}
.compat-item{display:flex;align-items:center;gap:9px;padding:11px;border-radius:10px;background:#f3f6f1;font-size:13px}
.check{color:var(--green);font-weight:900}
.notice{padding:20px;background:var(--sage);border-left:3px solid var(--orange);border-radius:0 13px 13px 0;font-size:14px;color:#46534d}
.install-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.install-card{padding:29px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}
.install-card.ios{background:#fbf7f2}
.install-top{display:flex;justify-content:space-between;align-items:start;margin-bottom:17px}
.system-mark{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:var(--sage);color:var(--green);font-weight:900}
.ios .system-mark{background:var(--orange-soft);color:#a24e24}
.install-card ol{margin:0 0 20px;padding-left:22px;color:var(--muted);font-size:14px}.install-card li{padding:4px 0}
.timeline{position:relative;margin-left:7px;border-left:1px solid var(--line)}
.time-item{position:relative;padding:0 0 24px 27px}
.time-item:before{content:"";position:absolute;left:-6px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--orange);border:2px solid var(--mist)}
.time-item:last-child{padding-bottom:0}
.time-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:12px}
.time-item h3{margin:5px 0;font-size:17px}
.news-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
.feature-news,.news-row{border:1px solid var(--line);background:var(--white);border-radius:var(--radius);overflow:hidden}
.news-cover{height:155px;background:linear-gradient(135deg,#d4e3d5,#eef0e7);position:relative}
.news-cover:after{content:"";position:absolute;inset:26px 40% 26px 13%;border-radius:13px;background:var(--green);box-shadow:34px 18px 0 var(--orange-soft)}
.feature-news .news-body{padding:23px}
.news-body h3{margin:10px 0 8px}.news-body p{font-size:14px;color:var(--muted);margin-bottom:18px}
.news-rows{display:grid;gap:10px}
.news-row{display:grid;grid-template-columns:82px 1fr;padding:12px;gap:14px;transition:.2s}
.news-row:hover{box-shadow:var(--shadow-sm);border-color:#b9cdbb}
.row-cover{border-radius:10px;background:#dce9de;min-height:78px}
.news-row h3{font-size:15px;margin:4px 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row p{font-size:12px;line-height:1.6;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{grid-column:1/-1;text-align:center;padding:48px 20px;border:1px dashed #bdcbbc;border-radius:var(--radius);background:var(--white)}
.empty-icon{width:44px;height:52px;margin:0 auto 12px;border:2px solid var(--green);border-radius:7px;position:relative}.empty-icon:after{content:"";position:absolute;left:9px;right:9px;top:16px;height:2px;background:var(--green);box-shadow:0 8px 0 var(--green)}
.faq-wrap{display:grid;grid-template-columns:.75fr 1.25fr;gap:45px;align-items:start}
.faq-wrap .lead{font-size:15px}
.faq-list{display:grid;gap:9px}
.faq-item{border:1px solid var(--line);background:var(--white);border-radius:13px;overflow:hidden}
.faq-question{width:100%;border:0;background:none;padding:17px 20px;color:var(--ink);font-weight:850;text-align:left;display:flex;justify-content:space-between;align-items:center;gap:20px}
.faq-question:after{content:"＋";font-size:20px;color:var(--orange);font-weight:400}
.faq-item.open .faq-question:after{content:"－"}
.faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px;line-height:1.75}
.faq-item.open .faq-answer{display:block}
.safety{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:center;padding:25px 30px;background:var(--sage);border-radius:var(--radius);border:1px solid #cedacc}
.safety-sign{width:49px;height:49px;border:1px solid #a9c0ad;border-radius:15px;color:var(--green);display:grid;place-items:center;font-size:23px;font-weight:900}
.safety h3{margin-bottom:3px}.safety p{margin:0;color:var(--muted);font-size:14px}
.support{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;padding:42px;border-radius:24px;background:var(--green);color:#fff}
.support h2{margin-bottom:12px}.support p{color:rgba(255,255,255,.76);font-size:15px}
.support-points{display:grid;gap:8px;margin-top:23px;font-size:14px}.support-points span:before{content:"•";color:var(--orange);font-weight:900;margin-right:9px}
.feedback-form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:grid;gap:6px}.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:750;color:#fff}
.field input,.field select,.field textarea{width:100%;border:1px solid rgba(255,255,255,.32);border-radius:10px;background:rgba(255,255,255,.1);color:#fff;padding:11px 12px;outline:none;transition:.2s}
.field select{color:#e7efea}.field select option{color:var(--ink)}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.54)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);background:rgba(255,255,255,.16)}
.field textarea{height:91px;resize:vertical}
.form-status{grid-column:1/-1;color:#dbeade;font-size:12px;margin:0}
.form-submit{justify-self:start;background:var(--orange);color:white}
.form-submit:hover{background:#cf7040}
.backline{display:flex;justify-content:flex-end;gap:14px;margin-top:21px}.backline a{font-size:13px;color:var(--green);font-weight:800}
.site-footer{background:#102f29;color:#e4ede6;padding:56px 0 22px;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.25fr .8fr 1fr;gap:50px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.15)}
.footer-brand{color:#fff;font-size:17px}.footer-brand .brand-mark{display:inline-grid;vertical-align:middle;margin-right:9px}
.footer-copy{font-size:13px;color:#b8c9bc;max-width:360px;margin-top:16px}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:13px}.footer-col a{display:block;color:#b8c9bc;font-size:13px;padding:4px 0}.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:18px;color:#9caf9f;font-size:12px}
@media(max-width:1050px){
 .nav{gap:0}.nav a{padding:8px 7px;font-size:13px}.brand{min-width:170px;font-size:13px}
 .hero-shell{padding:45px}.sim-grid{grid-template-columns:1fr 1fr}.sim-feature{grid-row:span 1;grid-column:span 2}
}
@media(max-width:820px){
 .header-inner{height:67px}.menu-toggle{display:block}.header-download{display:none}
 .nav{display:none;position:absolute;left:16px;right:16px;top:68px;padding:10px;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .nav.show{display:flex}.nav a{padding:12px}.nav a.active:after{display:none}
 .hero{padding-top:28px}.hero-shell{grid-template-columns:1fr;padding:36px 28px 0}.device-stage{height:360px}.phone{right:19%;width:210px;height:386px}.tag-one{right:1%}.tag-two{left:2%}
 .quick-grid{grid-template-columns:1fr 1fr}.quick-item:nth-child(2){border-right:0}.quick-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .download-band,.mechanism,.compat-panel,.faq-wrap,.support{grid-template-columns:1fr}
 .download-visual{height:260px}.faq-wrap{gap:20px}.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
 .container{width:min(100% - 30px,var(--container))}.section{padding:56px 0}.section-head{display:block;margin-bottom:23px}.section-head .text-link{display:inline-block;margin-top:12px}
 h1{font-size:34px}.hero-shell{padding:31px 20px 0;border-radius:20px}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}
 .device-stage{height:325px}.phone{right:14%;width:184px;height:340px;border-width:5px;border-radius:30px}.screen{padding:27px 9px 10px}.float-tag{padding:7px 9px;font-size:11px}.tag-one{top:24px}.tag-two{bottom:43px}.tag-three{bottom:0}
 .quick-grid{grid-template-columns:1fr}.quick-item,.quick-item:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.quick-item:last-child{border-bottom:0}
 .sim-grid{display:flex;overflow-x:auto;padding-bottom:8px}.sim-card,.sim-feature{min-width:255px;min-height:210px;grid-column:auto}.sim-feature{padding:24px}.sim-feature h3{font-size:24px}.sim-feature .btn{left:24px;bottom:22px}
 .download-band{padding:28px 20px}.download-card{grid-template-columns:38px 1fr}.download-card .btn{grid-column:2}.app-icon{width:38px;height:38px}.download-visual{display:none}
 .steps{grid-template-columns:1fr;border:0}.step{border:0;border-bottom:1px solid var(--line);padding:21px 5px}.mechanism-list,.compat-list,.install-grid{grid-template-columns:1fr}
 .news-layout{grid-template-columns:1fr}.news-row{grid-template-columns:64px 1fr}.row-cover{min-height:66px}
 .safety{grid-template-columns:1fr;padding:22px}.support{padding:30px 20px;gap:28px}.feedback-form{grid-template-columns:1fr}.field.full{grid-column:auto}.form-submit{width:100%}
 .footer-grid{grid-template-columns:1fr;gap:27px}.footer-bottom{display:block;line-height:1.8}.footer-bottom span{display:block}.site-footer{margin-top:56px}
}

/* roulang page: article */
:root{
  --ink:#1d2925;--muted:#617069;--green:#17443c;--green-dark:#10362f;
  --sage:#e4ece4;--mist:#f6f5ef;--white:#fffefa;--orange:#e88752;
  --orange-soft:#f8dfd0;--line:#d6ded6;--shadow:0 14px 38px rgba(23,68,60,.08);
  --shadow-sm:0 7px 22px rgba(23,68,60,.07);--radius:18px;--radius-sm:11px;
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--mist);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.78}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(232,135,82,.55);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(246,245,239,.92);border-bottom:1px solid transparent;backdrop-filter:blur(12px);transition:.2s}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 5px 16px rgba(23,68,60,.06)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;min-width:212px;color:var(--green);font-weight:900;font-size:15px;line-height:1.25}
.brand-mark{position:relative;width:34px;height:34px;border-radius:11px;background:var(--green);display:grid;place-items:center;flex:none}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:#fff;border-radius:2px}
.brand-mark:before{width:13px;height:5px;top:9px;left:10px}
.brand-mark:after{width:5px;height:12px;bottom:7px;right:8px;background:var(--orange)}
.nav{display:flex;align-items:center;justify-content:center;gap:3px}
.nav a{position:relative;padding:9px 10px;font-size:14px;font-weight:750;color:#48554f;border-radius:9px;white-space:nowrap;transition:.2s}
.nav a:hover{background:var(--sage);color:var(--green)}
.nav a.active{color:var(--green)}
.nav a.active:after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:3px;background:var(--orange)}
.menu-toggle{display:none;background:none;border:0;color:var(--green);padding:10px;font-size:23px}
.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:10px 18px;border:1px solid transparent;border-radius:11px;font-size:15px;font-weight:800;transition:.22s ease}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,68,60,.2)}
.btn-secondary{border-color:var(--line);background:rgba(255,255,255,.42);color:var(--green)}
.btn-secondary:hover{background:var(--sage);border-color:#b8cbbd;transform:translateY(-2px)}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:#cf7040;transform:translateY(-2px)}
.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:99px;background:var(--sage);color:var(--green);font-size:12px;font-weight:800}
.badge.orange{background:var(--orange-soft);color:#9c4c24}
.article-hero{padding:42px 0 30px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:20px;color:var(--muted);font-size:13px}
.breadcrumb a{color:var(--green);font-weight:750}
.breadcrumb i{font-style:normal;color:#a6b0aa}
.article-hero-shell{position:relative;overflow:hidden;padding:46px 54px;background:var(--sage);border:1px solid #d1ddd2;border-radius:28px}
.article-hero-shell:before{content:"";position:absolute;width:245px;height:245px;right:-75px;top:-110px;border:1px solid rgba(23,68,60,.16);border-radius:50%}
.article-hero-shell:after{content:"";position:absolute;width:150px;height:150px;left:68%;bottom:-68px;background-image:radial-gradient(rgba(23,68,60,.22) 1.4px,transparent 1.4px);background-size:13px 13px}
.article-head-copy{position:relative;z-index:1;max-width:850px}
.article-head-copy h1{margin:15px 0 18px;color:var(--ink);font-size:clamp(31px,4vw,46px);font-weight:900;letter-spacing:-.035em;line-height:1.23}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;color:var(--muted);font-size:13px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#a5b1a8}
.section{padding:42px 0}
.section-title{margin:0 0 18px;color:var(--green);font-size:25px;line-height:1.35;font-weight:900}
.summary-card{display:flex;gap:20px;align-items:flex-start;padding:27px 30px;border:1px solid var(--line);background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.summary-icon{width:43px;height:43px;flex:none;display:grid;place-items:center;border-radius:13px;background:var(--orange-soft);color:#a75026;font-weight:900;font-size:20px}
.summary-card p{margin:7px 0 0;color:var(--muted);font-size:15px}
.article-layout{display:grid;grid-template-columns:minmax(0,780px) 250px;justify-content:center;gap:46px;align-items:start}
.article-content{padding:42px 48px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}
.article-content>*:first-child{margin-top:0}
.article-content h2{margin:40px 0 16px;padding-top:4px;color:var(--green);font-size:27px;font-weight:900;line-height:1.35}
.article-content h3{margin:28px 0 12px;color:var(--ink);font-size:20px;font-weight:850;line-height:1.45}
.article-content p{margin:0 0 18px;color:#34423c}
.article-content ul,.article-content ol{padding-left:1.45em;margin:0 0 20px;color:#34423c}
.article-content li{margin:8px 0;padding-left:4px}
.article-content blockquote{margin:26px 0;padding:16px 20px;border-left:4px solid var(--orange);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:#fcf1eb;color:#754426}
.article-content img{margin:25px auto;border-radius:13px;border:1px solid var(--line)}
.article-content table{width:100%;margin:25px 0;border-collapse:collapse;font-size:14px;overflow:hidden;border:1px solid var(--line);border-radius:12px}
.article-content th,.article-content td{padding:12px 14px;text-align:left;border:1px solid var(--line)}
.article-content th{background:var(--sage);color:var(--green)}
.toc-panel{position:sticky;top:100px;padding:21px;background:rgba(255,254,250,.72);border:1px solid var(--line);border-radius:var(--radius-sm)}
.toc-panel strong{display:block;margin-bottom:10px;color:var(--green);font-size:14px}
.toc-list{display:grid;gap:4px}
.toc-list a{padding:7px 8px;border-radius:8px;color:var(--muted);font-size:13px;line-height:1.45;transition:.2s}
.toc-list a:hover,.toc-list a.current{background:var(--sage);color:var(--green)}
.toc-empty{color:var(--muted);font-size:13px}
.inline-action{margin-top:35px;padding:27px 30px;display:flex;align-items:center;justify-content:space-between;gap:22px;border-radius:var(--radius);background:var(--green);color:#fff}
.inline-action h2{margin:0 0 4px;font-size:20px;font-weight:900}
.inline-action p{margin:0;color:rgba(255,255,255,.76);font-size:14px}
.inline-action .btn{flex:none;background:#fff;color:var(--green)}
.inline-action .btn:hover{background:var(--orange-soft);transform:translateY(-2px)}
.related-wrap{padding:36px;background:#edf2eb;border:1px solid #d8e2d8;border-radius:var(--radius)}
.related-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:21px}
.related-head h2{margin:0;color:var(--green);font-size:25px;font-weight:900}
.related-head p{margin:0;color:var(--muted);font-size:14px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-card{display:flex;flex-direction:column;min-height:210px;padding:20px;background:var(--white);border:1px solid var(--line);border-radius:15px;transition:.22s}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9cdbb}
.card-art{height:57px;margin:-20px -20px 17px;background:linear-gradient(135deg,#dbe8db 0%,#f1eee3 100%);border-radius:15px 15px 0 0;position:relative;overflow:hidden}
.card-art:before{content:"";position:absolute;width:86px;height:86px;right:15px;top:-37px;border:14px solid rgba(23,68,60,.25);border-radius:24px}
.related-card h3{display:-webkit-box;overflow:hidden;margin:9px 0 12px;color:var(--ink);font-size:17px;line-height:1.48;font-weight:850;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.related-card p{margin:auto 0 0;color:var(--muted);font-size:13px}
.related-card .badge{align-self:flex-start}
.back-panel{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:30px 34px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
.back-panel h2{margin:0 0 5px;color:var(--green);font-size:22px;font-weight:900}
.back-panel p{margin:0;color:var(--muted);font-size:14px}
.back-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}
.empty-article{max-width:760px;margin:0 auto;padding:65px 32px;text-align:center;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.empty-icon{width:58px;height:58px;display:grid;place-items:center;margin:0 auto 16px;border-radius:18px;background:var(--orange-soft);color:#a75026;font-size:25px;font-weight:900}
.empty-article h2{margin:0 0 8px;color:var(--green);font-size:25px;font-weight:900}
.empty-article p{margin:0 0 22px;color:var(--muted)}
.site-footer{margin-top:74px;padding:58px 0 22px;background:var(--green);color:#e8f0e9}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr .9fr;gap:54px;padding-bottom:42px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:900}
.footer-brand .brand-mark{background:#fff}
.footer-brand .brand-mark:before{background:var(--green)}
.footer-copy{max-width:355px;margin:15px 0 0;color:#c8d8cc;font-size:14px;line-height:1.75}
.footer-col h3{margin:0 0 13px;color:#fff;font-size:15px;font-weight:850}
.footer-col a{display:block;width:max-content;max-width:100%;padding:3px 0;color:#c8d8cc;font-size:14px;transition:.2s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);color:#bed0c2;font-size:12px}
@media (max-width:1024px){
  .brand{min-width:180px;font-size:14px}.nav a{padding:9px 7px;font-size:13px}
  .article-layout{grid-template-columns:minmax(0,720px);gap:20px}.toc-panel{position:relative;top:auto;order:-1}
  .toc-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .container{width:min(100% - 32px,var(--container))}
  .header-inner{height:68px}.brand{min-width:0;max-width:245px}.nav{display:none}
  .menu-toggle{display:block}.header-download{display:none}
  .site-header.menu-open .nav{position:absolute;top:68px;left:16px;right:16px;display:grid;gap:4px;padding:12px;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
  .site-header.menu-open .nav a{padding:12px}
  .article-hero{padding:26px 0 18px}.article-hero-shell{padding:31px 25px;border-radius:20px}
  .article-head-copy h1{font-size:31px}.section{padding:27px 0}
  .summary-card{padding:22px;gap:14px}.article-content{padding:28px 23px;border-radius:15px}
  .article-content h2{font-size:24px}.article-content h3{font-size:19px}
  .toc-list{grid-template-columns:1fr}.inline-action{display:block;padding:24px}.inline-action .btn{width:100%;margin-top:17px}
  .related-wrap{padding:25px 18px}.related-grid{grid-template-columns:1fr}.related-card{min-height:180px}
  .back-panel{display:block;padding:26px}.back-actions{justify-content:flex-start;margin-top:18px}
  .footer-grid{grid-template-columns:1fr;gap:27px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}
}
@media (max-width:520px){
  body{font-size:15px}.brand{font-size:13px}.article-meta{gap:8px}.article-hero-shell{padding:27px 20px}
  .article-head-copy h1{font-size:28px}.summary-card{display:block}.summary-icon{margin-bottom:13px}
  .article-content{padding:25px 18px}.article-content table{display:block;overflow-x:auto;white-space:nowrap}
  .back-actions .btn{width:100%}.related-head{display:block}.related-head p{margin-top:6px}
}

/* roulang page: category1 */
:root{
      --ink:#1d2925;
      --muted:#617069;
      --green:#17443c;
      --green-dark:#10362f;
      --sage:#e4ece4;
      --mist:#f6f5ef;
      --white:#fffefa;
      --orange:#e88752;
      --orange-soft:#f8dfd0;
      --line:#d6ded6;
      --shadow:0 14px 38px rgba(23,68,60,.08);
      --shadow-sm:0 7px 22px rgba(23,68,60,.07);
      --radius:18px;
      --radius-sm:11px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--mist);
      color:var(--ink);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.78;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(232,135,82,.45);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .section{padding:84px 0}
    .section-tight{padding:42px 0}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:30px}
    .section-head h2{margin:8px 0 0;font-size:30px;line-height:1.28;letter-spacing:-.03em;color:var(--green)}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--green);
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
    }
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--orange)}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.85;max-width:680px}
    .btn{
      min-height:46px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      padding:10px 18px;
      border:1px solid transparent;
      border-radius:11px;
      font-size:15px;
      font-weight:800;
      transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
    }
    .btn-primary{background:var(--green);color:#fff}
    .btn-primary:hover{background:var(--green-dark);color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,68,60,.2)}
    .btn-secondary{background:rgba(255,255,255,.48);border-color:var(--line);color:var(--green)}
    .btn-secondary:hover{background:var(--sage);border-color:#b8cbbd;color:var(--green);transform:translateY(-2px)}
    .btn-orange{background:var(--orange);color:#fff}
    .btn-orange:hover{background:#cf7040;color:#fff;transform:translateY(-2px)}
    .badge{
      display:inline-flex;
      align-items:center;
      width:max-content;
      padding:4px 9px;
      border-radius:99px;
      background:var(--sage);
      color:var(--green);
      font-size:12px;
      font-weight:800;
      line-height:1.3;
    }
    .badge.orange{background:var(--orange-soft);color:#9c4c24}
    .site-header{
      position:sticky;
      top:0;
      z-index:30;
      background:rgba(246,245,239,.92);
      border-bottom:1px solid transparent;
      backdrop-filter:blur(12px);
      transition:.2s ease;
    }
    .site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 5px 16px rgba(23,68,60,.06)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:205px;
      color:var(--green);
      font-weight:900;
      font-size:15px;
      line-height:1.25;
    }
    .brand-mark{
      position:relative;
      width:34px;
      height:34px;
      border-radius:11px;
      background:var(--green);
      display:grid;
      place-items:center;
      flex:none;
    }
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:#fff;border-radius:2px}
    .brand-mark:before{width:13px;height:5px;top:9px;left:10px}
    .brand-mark:after{width:5px;height:12px;bottom:7px;right:8px;background:var(--orange)}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px}
    .nav a{
      position:relative;
      padding:9px 10px;
      color:#48554f;
      border-radius:9px;
      font-size:14px;
      font-weight:750;
      white-space:nowrap;
    }
    .nav a:hover{background:var(--sage);color:var(--green)}
    .nav a.active{color:var(--green)}
    .nav a.active:after{
      content:"";
      position:absolute;
      left:11px;
      right:11px;
      bottom:3px;
      height:2px;
      border-radius:3px;
      background:var(--orange);
    }
    .header-download{white-space:nowrap}
    .menu-toggle{display:none;background:none;border:0;color:var(--green);padding:10px;font-size:23px}
    .page-top{padding:38px 0 24px}
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      padding:0;
      margin:0 0 22px;
      list-style:none;
      color:var(--muted);
      font-size:13px;
    }
    .breadcrumb li+li:before{content:"/";margin-right:8px;color:#9ba7a0}
    .breadcrumb a:hover{color:var(--green)}
    .title-band{
      position:relative;
      overflow:hidden;
      padding:43px 48px;
      border:1px solid #d3ddd2;
      border-radius:24px;
      background:var(--sage);
    }
    .title-band:before{
      content:"";
      position:absolute;
      top:-85px;
      right:5%;
      width:230px;
      height:230px;
      border:1px solid rgba(23,68,60,.15);
      border-radius:50%;
    }
    .title-band:after{
      content:"";
      position:absolute;
      right:8%;
      bottom:-34px;
      width:155px;
      height:85px;
      background-image:radial-gradient(rgba(23,68,60,.24) 1.4px,transparent 1.4px);
      background-size:12px 12px;
    }
    .title-content{position:relative;z-index:1;max-width:785px}
    h1{margin:10px 0 14px;color:var(--green);font-size:42px;line-height:1.22;letter-spacing:-.045em}
    .title-band .lead{max-width:730px}
    .entry-layout{display:grid;grid-template-columns:.95fr 1.05fr;gap:26px;align-items:start}
    .entry-intro{
      position:sticky;
      top:102px;
      padding:30px;
      border-radius:var(--radius);
      background:var(--green);
      color:#fff;
      overflow:hidden;
    }
    .entry-intro:after{
      content:"";
      position:absolute;
      width:190px;
      height:190px;
      right:-84px;
      bottom:-86px;
      border:1px solid rgba(255,255,255,.25);
      border-radius:50%;
    }
    .entry-intro h2{position:relative;z-index:1;margin:12px 0;font-size:27px;line-height:1.35}
    .entry-intro p{position:relative;z-index:1;margin:0;color:rgba(255,255,255,.78);font-size:15px}
    .entry-intro .badge{position:relative;z-index:1;background:rgba(255,255,255,.14);color:#fff}
    .entry-stack{display:grid;gap:14px}
    .entry-card{
      display:grid;
      grid-template-columns:62px 1fr auto;
      align-items:center;
      gap:18px;
      padding:23px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:var(--white);
      box-shadow:0 1px 0 rgba(23,68,60,.02);
      transition:.24s ease;
    }
    .entry-card:hover{transform:translateY(-3px);border-color:#b7cbb9;box-shadow:var(--shadow-sm)}
    .entry-icon{
      display:grid;
      width:62px;
      height:62px;
      place-items:center;
      border-radius:16px;
      background:var(--sage);
      color:var(--green);
      font-size:25px;
      font-weight:900;
    }
    .entry-card:nth-child(2) .entry-icon{background:var(--orange-soft);color:#a3542c}
    .entry-card:nth-child(3) .entry-icon{background:#e9eee7;color:#527266}
    .entry-card h3{margin:0 0 4px;color:var(--green);font-size:19px}
    .entry-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
    .entry-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:9px}
    .filter-shell{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      padding:21px 25px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:var(--white);
    }
    .filter-label{display:flex;align-items:center;gap:10px;color:var(--green);font-weight:850;white-space:nowrap}
    .filter-label i{width:9px;height:9px;border-radius:50%;background:var(--orange);display:inline-block}
    .filter-tags{display:flex;flex-wrap:wrap;gap:9px}
    .filter-tag{
      padding:8px 13px;
      border:1px solid var(--line);
      border-radius:99px;
      background:#fff;
      color:var(--muted);
      font-size:13px;
      font-weight:750;
      transition:.2s ease;
    }
    .filter-tag:hover,.filter-tag.selected{background:var(--sage);border-color:#b9cdbb;color:var(--green)}
    .route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .route-card{
      position:relative;
      min-height:236px;
      padding:27px;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:var(--white);
      transition:.24s ease;
    }
    .route-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b7cbb9}
    .route-no{display:block;color:var(--orange);font-size:13px;font-weight:900;letter-spacing:.1em}
    .route-card h3{margin:18px 0 8px;color:var(--green);font-size:21px}
    .route-card p{margin:0;color:var(--muted);font-size:14px}
    .route-symbol{
      position:absolute;
      right:19px;
      bottom:13px;
      color:rgba(23,68,60,.1);
      font-size:64px;
      font-weight:900;
      line-height:1;
    }
    .interface-panel{
      display:grid;
      grid-template-columns:1fr .98fr;
      gap:34px;
      align-items:center;
      padding:38px;
      border:1px solid #d4ded3;
      border-radius:25px;
      background:#edf2ea;
    }
    .mock-shell{
      position:relative;
      min-height:362px;
      border-radius:27px;
      background:#e1e9e1;
      overflow:hidden;
    }
    .mock-grid{
      position:absolute;
      inset:0;
      opacity:.55;
      background-image:radial-gradient(rgba(23,68,60,.19) 1.2px,transparent 1.2px);
      background-size:14px 14px;
    }
    .mock-screen{
      position:absolute;
      top:34px;
      left:50%;
      width:220px;
      height:305px;
      padding:14px;
      transform:translateX(-50%);
      border:7px solid #213a33;
      border-radius:28px;
      background:var(--white);
      box-shadow:0 18px 30px rgba(23,68,60,.15);
    }
    .mock-notch{width:73px;height:8px;margin:0 auto 13px;border-radius:20px;background:#213a33}
    .mock-banner{height:95px;padding:13px;border-radius:14px;background:var(--green);color:#fff}
    .mock-banner strong{display:block;font-size:14px}
    .mock-banner span{display:block;margin-top:8px;font-size:10px;color:#c8d7cf}
    .mock-row{display:flex;align-items:center;gap:7px;margin-top:10px;padding-bottom:8px;border-bottom:1px solid #e5ebe5;font-size:9px;color:var(--muted)}
    .mock-row:before{content:"";width:19px;height:19px;border-radius:6px;background:var(--orange-soft);flex:none}
    .mock-dots{display:flex;gap:4px;margin-left:auto}
    .mock-dots i{display:block;width:4px;height:4px;border-radius:50%;background:#afc0b5}
    .callout{
      position:absolute;
      z-index:2;
      display:flex;
      align-items:center;
      justify-content:center;
      width:31px;
      height:31px;
      border:2px solid var(--white);
      border-radius:50%;
      background:var(--orange);
      color:#fff;
      box-shadow:0 5px 12px rgba(120,75,48,.2);
      font-size:12px;
      font-weight:900;
    }
    .callout.c1{top:88px;left:calc(50% - 124px)}
    .callout.c2{top:178px;right:calc(50% - 126px)}
    .callout.c3{bottom:51px;left:calc(50% - 114px)}
    .annotation-list{display:grid;gap:16px}
    .annotation-item{display:grid;grid-template-columns:37px 1fr;gap:14px;align-items:start}
    .annotation-no{
      display:grid;
      width:37px;
      height:37px;
      place-items:center;
      border-radius:11px;
      background:var(--green);
      color:#fff;
      font-size:13px;
      font-weight:900;
    }
    .annotation-item h3{margin:0 0 3px;color:var(--green);font-size:17px}
    .annotation-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
    .scene-track{display:grid;grid-template-columns:1.15fr .85fr .85fr .85fr;gap:15px}
    .scene-card{
      min-height:200px;
      padding:24px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:var(--white);
      transition:.24s ease;
    }
    .scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
    .scene-card:first-child{background:var(--green);border-color:var(--green);color:#fff}
    .scene-icon{
      display:grid;
      width:42px;
      height:42px;
      place-items:center;
      border-radius:12px;
      background:var(--sage);
      color:var(--green);
      font-size:20px;
      font-weight:900;
    }
    .scene-card:first-child .scene-icon{background:rgba(255,255,255,.14);color:#fff}
    .scene-card h3{margin:18px 0 6px;color:var(--green);font-size:18px}
    .scene-card:first-child h3{color:#fff}
    .scene-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.62}
    .scene-card:first-child p{color:rgba(255,255,255,.75)}
    .news-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px}
    .news-feature{
      padding:30px;
      border-radius:var(--radius);
      background:var(--green);
      color:#fff;
    }
    .news-feature h3{margin:17px 0 10px;font-size:25px;line-height:1.38}
    .news-feature p{margin:0;color:rgba(255,255,255,.77);font-size:14px}
    .news-feature .badge{background:rgba(255,255,255,.14);color:#fff}
    .news-date{display:block;margin-top:25px;color:#c9d7cf;font-size:13px}
    .news-list{border-top:1px solid var(--line)}
    .news-item{
      display:grid;
      grid-template-columns:84px 1fr;
      gap:17px;
      padding:18px 0;
      border-bottom:1px solid var(--line);
      transition:.2s ease;
    }
    .news-item:hover{padding-left:8px}
    .news-time{color:var(--orange);font-size:13px;font-weight:850}
    .news-item h3{margin:0 0 4px;color:var(--green);font-size:16px;line-height:1.5}
    .news-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
    .news-more{margin-top:23px}
    .faq-safety{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:24px;
      align-items:start;
    }
    .faq-box,.safety-box{
      padding:30px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:var(--white);
    }
    .faq-box h2,.safety-box h2{margin:0 0 20px;color:var(--green);font-size:25px}
    .faq-item{border-top:1px solid var(--line)}
    .faq-item:first-of-type{border-top:0}
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:17px 0;
      border:0;
      background:transparent;
      color:var(--ink);
      text-align:left;
      font-size:15px;
      font-weight:800;
    }
    .faq-question span:last-child{color:var(--orange);font-size:22px;font-weight:400;transition:.2s ease}
    .faq-answer{display:none;padding:0 28px 17px 0;color:var(--muted);font-size:14px;line-height:1.75}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .safety-box{background:#eef3ec}
    .safety-box p{margin:0 0 18px;color:var(--muted);font-size:14px}
    .safety-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .safety-list li{
      position:relative;
      padding:12px 13px 12px 39px;
      border:1px solid #d2ded1;
      border-radius:12px;
      background:rgba(255,255,255,.52);
      color:#40514a;
      font-size:14px;
    }
    .safety-list li:before{
      content:"✓";
      position:absolute;
      left:13px;
      top:11px;
      color:var(--green);
      font-weight:900;
    }
    .site-footer{margin-top:34px;padding:62px 0 23px;background:var(--green);color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.25fr .8fr .8fr;gap:50px}
    .footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:900}
    .footer-brand .brand-mark{background:#fff}
    .footer-brand .brand-mark:before{background:var(--green)}
    .footer-copy{max-width:365px;margin:16px 0 0;color:#c9d8d0;font-size:14px;line-height:1.75}
    .footer-col h3{margin:4px 0 13px;color:#fff;font-size:15px}
    .footer-col a{display:block;width:max-content;max-width:100%;margin:7px 0;color:#c9d8d0;font-size:14px;transition:.2s ease}
    .footer-col a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      margin-top:44px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.16);
      color:#b8c9c0;
      font-size:13px;
    }
    @media (max-width:1100px){
      .brand{min-width:auto;font-size:14px}
      .nav a{padding:9px 7px;font-size:13px}
      .entry-layout,.news-wrap,.faq-safety{grid-template-columns:1fr}
      .entry-intro{position:relative;top:auto}
      .scene-track{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:860px){
      .header-download{display:none}
      .menu-toggle{display:block}
      .nav{
        display:none;
        position:absolute;
        top:76px;
        left:0;
        right:0;
        padding:14px 24px 19px;
        border-bottom:1px solid var(--line);
        background:var(--mist);
        box-shadow:var(--shadow-sm);
        flex-direction:column;
        align-items:stretch;
      }
      .nav.open{display:flex}
      .nav a{padding:12px 13px}
      .nav a.active:after{left:13px;right:auto;bottom:8px;width:28px}
      .title-band{padding:35px 30px}
      h1{font-size:35px}
      .entry-card{grid-template-columns:55px 1fr}
      .entry-card .btn{grid-column:2;width:max-content;margin-top:3px}
      .route-grid{grid-template-columns:1fr}
      .interface-panel{grid-template-columns:1fr;padding:27px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
      .footer-grid>div:first-child{grid-column:span 2}
    }
    @media (max-width:620px){
      body{font-size:15px}
      .container{width:min(var(--container),calc(100% - 30px))}
      .section{padding:57px 0}
      .section-tight{padding:29px 0}
      .section-head{display:block;margin-bottom:23px}
      .section-head h2{font-size:26px}
      .section-head .lead{margin-top:11px}
      .page-top{padding-top:25px}
      .title-band{padding:29px 23px;border-radius:19px}
      .title-band:before{right:-95px}
      h1{font-size:29px;line-height:1.3}
      .lead{font-size:15px}
      .filter-shell{display:block;padding:19px}
      .filter-tags{margin-top:15px}
      .entry-card{padding:18px;gap:13px}
      .entry-icon{width:50px;height:50px;border-radius:13px;font-size:20px}
      .entry-card h3{font-size:17px}
      .entry-card .btn{width:100%}
      .interface-panel{padding:20px}
      .mock-shell{min-height:326px}
      .mock-screen{top:23px;width:201px;height:278px}
      .scene-track{display:flex;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
      .scene-card{min-width:246px;scroll-snap-align:start}
      .news-wrap{gap:16px}
      .news-feature,.faq-box,.safety-box{padding:23px}
      .news-item{grid-template-columns:68px 1fr;gap:11px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-grid>div:first-child{grid-column:auto}
      .footer-bottom{display:block;margin-top:30px}
      .footer-bottom span{display:block;margin:6px 0}
    }
    @media (max-width:420px){
      .header-inner{height:68px}
      .nav{top:68px}
      .brand{font-size:13px}
      .brand-mark{width:31px;height:31px}
      .title-band{padding:25px 19px}
      h1{font-size:27px}
      .entry-card{grid-template-columns:1fr}
      .entry-card .btn{grid-column:auto}
      .entry-meta{margin-top:7px}
      .mock-screen{transform:translateX(-50%) scale(.92);transform-origin:top center}
    }

/* roulang page: category2 */
:root{
      --ink:#1d2925;
      --muted:#617069;
      --green:#17443c;
      --green-dark:#10362f;
      --sage:#e4ece4;
      --mist:#f6f5ef;
      --white:#fffefa;
      --orange:#e88752;
      --orange-soft:#f8dfd0;
      --line:#d6ded6;
      --shadow:0 14px 38px rgba(23,68,60,.08);
      --shadow-sm:0 7px 22px rgba(23,68,60,.07);
      --radius:18px;
      --radius-sm:11px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--mist);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.78}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:var(--orange-soft);color:var(--green-dark)}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .section{padding:88px 0}
    .section-soft{background:var(--sage)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-head h2{margin:8px 0 0;color:var(--green);font-size:30px;line-height:1.3;font-weight:900;letter-spacing:-.03em}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--orange)}
    .lead{color:var(--muted);font-size:16px;max-width:680px;line-height:1.88;margin:0}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:10px 18px;border:1px solid transparent;border-radius:11px;font-size:15px;font-weight:800;transition:.22s ease}
    .btn:focus-visible,.nav a:focus-visible,.menu-toggle:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(232,135,82,.4);outline-offset:3px}
    .btn-primary{background:var(--green);color:#fff}
    .btn-primary:hover{background:var(--green-dark);color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,68,60,.2)}
    .btn-secondary{border-color:var(--line);background:rgba(255,255,255,.42);color:var(--green)}
    .btn-secondary:hover{background:var(--sage);border-color:#b8cbbd;color:var(--green);transform:translateY(-2px)}
    .btn-orange{background:var(--orange);color:#fff}
    .btn-orange:hover{background:#cf7040;color:#fff;transform:translateY(-2px)}
    .badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:99px;background:var(--sage);color:var(--green);font-size:12px;font-weight:800;line-height:1.3}
    .badge.orange{background:var(--orange-soft);color:#9c4c24}
    .badge.white{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.2)}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(246,245,239,.9);border-bottom:1px solid transparent;backdrop-filter:blur(12px);transition:.2s}
    .site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 5px 16px rgba(23,68,60,.06)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;min-width:205px;color:var(--green);font-weight:900;font-size:15px;line-height:1.25}
    .brand-mark{position:relative;width:34px;height:34px;border-radius:11px;background:var(--green);display:grid;place-items:center;flex:none}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:#fff;border-radius:2px}
    .brand-mark:before{width:13px;height:5px;top:9px;left:10px}
    .brand-mark:after{width:5px;height:12px;bottom:7px;right:8px;background:var(--orange)}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px}
    .nav a{position:relative;padding:9px 10px;font-size:14px;font-weight:750;color:#48554f;border-radius:9px;white-space:nowrap;transition:.2s}
    .nav a:hover{background:var(--sage);color:var(--green)}
    .nav a.active{color:var(--green)}
    .nav a.active:after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:3px;background:var(--orange)}
    .header-download{white-space:nowrap}
    .menu-toggle{display:none;background:none;border:0;color:var(--green);padding:10px;font-size:23px;line-height:1}
    .page-top{padding:42px 0 22px}
    .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:0 0 18px;padding:0;list-style:none;color:var(--muted);font-size:13px}
    .breadcrumb li+li:before{content:"/";margin-right:9px;color:#98a59d}
    .breadcrumb a:hover{color:var(--green)}
    .title-band{position:relative;padding:45px 52px;background:var(--green);color:#fff;border-radius:28px;overflow:hidden}
    .title-band:before{content:"";position:absolute;right:-50px;top:-100px;width:310px;height:310px;border:1px solid rgba(255,255,255,.19);border-radius:50%}
    .title-band:after{content:"";position:absolute;right:170px;bottom:-44px;width:160px;height:100px;background-image:radial-gradient(rgba(255,255,255,.28) 1.4px,transparent 1.4px);background-size:12px 12px}
    .title-band > *{position:relative;z-index:1}
    .title-band h1{max-width:760px;margin:13px 0 12px;font-size:42px;line-height:1.2;letter-spacing:-.045em;font-weight:900}
    .title-band p{max-width:700px;margin:0;color:rgba(255,255,255,.79);font-size:16px;line-height:1.85}
    .featured{display:grid;grid-template-columns:1.04fr .96fr;border:1px solid var(--line);background:var(--white);border-radius:24px;overflow:hidden;box-shadow:var(--shadow-sm)}
    .feature-art{position:relative;min-height:375px;padding:32px;background:#d7e4d6;overflow:hidden}
    .feature-art:before{content:"";position:absolute;width:240px;height:240px;right:-65px;top:-70px;border:1px solid rgba(23,68,60,.18);border-radius:50%}
    .feature-art:after{content:"";position:absolute;left:26px;bottom:28px;width:136px;height:96px;background-image:radial-gradient(rgba(23,68,60,.25) 1.5px,transparent 1.5px);background-size:12px 12px}
    .pixel-simulator{position:absolute;left:50%;top:50%;width:250px;height:285px;padding:14px;background:var(--white);border:7px solid #284f45;border-radius:29px;box-shadow:0 22px 34px rgba(20,62,53,.2);transform:translate(-43%,-46%) rotate(4deg)}
    .pixel-simulator:before{content:"";position:absolute;left:50%;bottom:5px;width:38px;height:4px;border-radius:4px;background:#cfdbd0;transform:translateX(-50%)}
    .mini-top{display:flex;justify-content:space-between;align-items:center;font-size:9px;color:var(--muted)}
    .mini-window{height:92px;margin-top:14px;padding:14px;border-radius:13px;background:var(--green);color:#fff}
    .mini-window strong{display:block;font-size:16px;line-height:1.2}
    .mini-window span{display:block;margin-top:7px;font-size:9px;opacity:.76}
    .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:10px}
    .mini-grid i{height:48px;border:1px solid #dce5dc;border-radius:9px;background:#f5f7f2}
    .mini-grid i:nth-child(2){background:var(--orange-soft);border-color:#f0c7b1}
    .signal-card{position:absolute;z-index:2;right:24px;bottom:26px;padding:11px 13px;border:1px solid #d4e0d4;border-radius:12px;background:rgba(255,254,250,.94);box-shadow:var(--shadow-sm);font-size:12px;font-weight:800;color:var(--green)}
    .signal-card span{display:block;font-size:11px;font-weight:500;color:var(--muted)}
    .featured-copy{display:flex;flex-direction:column;justify-content:center;padding:46px}
    .featured-copy h2{margin:12px 0;color:var(--green);font-size:31px;line-height:1.28;font-weight:900}
    .featured-copy p{margin:0;color:var(--muted)}
    .feature-meta{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 25px}
    .simulator-layout{display:grid;grid-template-columns:1.18fr .82fr;gap:18px;align-items:start}
    .simulator-column{display:grid;gap:18px}
    .sim-card{position:relative;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);overflow:hidden;transition:.25s}
    .sim-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9cdbb}
    .sim-card.large{padding:30px;background:#fbfcf8}
    .sim-card h3{margin:12px 0 8px;color:var(--green);font-size:21px;font-weight:900}
    .sim-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .sim-footer{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-top:21px;padding-top:16px;border-top:1px solid var(--line)}
    .version{font-size:13px;color:var(--muted)}
    .version strong{display:block;color:var(--ink);font-size:13px}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:14px;font-weight:850;transition:.2s}
    .text-link:hover{color:#b85d2d;transform:translateX(2px)}
    .card-emblem{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--sage);color:var(--green);font-weight:900;font-size:18px}
    .card-emblem.orange{background:var(--orange-soft);color:#a5552d}
    .compact-top{display:flex;justify-content:space-between;gap:10px;align-items:start}
    .matrix{display:grid;grid-template-columns:180px repeat(4,1fr);border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--white)}
    .matrix > div{min-height:70px;padding:16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);font-size:14px;display:flex;align-items:center;justify-content:center;text-align:center}
    .matrix > div:nth-child(5n){border-right:0}
    .matrix > div:nth-last-child(-n+5){border-bottom:0}
    .matrix .head{background:var(--green);color:#fff;font-weight:850}
    .matrix .row-head{justify-content:flex-start;background:#f2f6f0;color:var(--green);font-weight:850}
    .status{display:inline-flex;align-items:center;gap:6px;color:var(--green);font-size:13px;font-weight:800}
    .status:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange)}
    .timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .timeline:before{content:"";position:absolute;top:27px;left:7%;right:7%;height:1px;background:#bfcfc0}
    .time-item{position:relative;padding:0 6px}
    .time-dot{position:relative;z-index:1;width:55px;height:55px;display:grid;place-items:center;margin-bottom:18px;border:1px solid #bdcebf;border-radius:50%;background:var(--white);color:var(--green);font-size:12px;font-weight:900}
    .time-item h3{margin:0 0 7px;color:var(--green);font-size:17px;font-weight:900}
    .time-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .compatibility-box{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;padding:38px 42px;background:var(--green);border-radius:24px;color:#fff;overflow:hidden}
    .compatibility-box h2{margin:10px 0;font-size:30px;line-height:1.3;font-weight:900}
    .compatibility-box p{margin:0;color:rgba(255,255,255,.76)}
    .compat-list{display:grid;grid-template-columns:repeat(2,1fr);gap:11px;align-content:center}
    .compat-list div{padding:13px 15px;border:1px solid rgba(255,255,255,.18);border-radius:12px;background:rgba(255,255,255,.07);font-size:14px}
    .compat-list small{display:block;color:rgba(255,255,255,.61);font-size:12px}
    .articles{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
    .article-list{border:1px solid var(--line);border-radius:18px;background:var(--white);overflow:hidden}
    .article-row{display:grid;grid-template-columns:76px 1fr auto;gap:17px;align-items:center;padding:20px 22px;border-bottom:1px solid var(--line);transition:.2s}
    .article-row:last-child{border-bottom:0}
    .article-row:hover{background:#f6f8f4}
    .article-date{color:var(--green);font-size:12px;font-weight:850;line-height:1.35}
    .article-date span{display:block;color:var(--muted);font-weight:600}
    .article-title{min-width:0}
    .article-title strong{display:block;overflow:hidden;color:var(--ink);font-size:15px;line-height:1.5;font-weight:850;text-overflow:ellipsis;white-space:nowrap}
    .article-title span{display:block;margin-top:3px;overflow:hidden;color:var(--muted);font-size:13px;line-height:1.4;text-overflow:ellipsis;white-space:nowrap}
    .article-panel{padding:30px;border-radius:18px;background:var(--orange-soft)}
    .article-panel h3{margin:8px 0;color:#79391f;font-size:22px;font-weight:900}
    .article-panel p{margin:0 0 20px;color:#86553f;font-size:14px}
    .faq-feedback{display:grid;grid-template-columns:1.08fr .92fr;gap:26px}
    .faq-list{border:1px solid var(--line);border-radius:18px;background:var(--white);overflow:hidden}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-item:last-child{border-bottom:0}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 22px;border:0;background:var(--white);color:var(--green);font-weight:850;text-align:left;transition:.2s}
    .faq-question:hover{background:#f5f8f3}
    .faq-question i{position:relative;width:20px;height:20px;flex:none}
    .faq-question i:before,.faq-question i:after{content:"";position:absolute;top:9px;left:2px;width:16px;height:2px;border-radius:2px;background:var(--orange)}
    .faq-question i:after{transform:rotate(90deg);transition:.2s}
    .faq-item.open .faq-question i:after{transform:rotate(0)}
    .faq-answer{display:none;padding:0 22px 20px;color:var(--muted);font-size:14px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .feedback-card{padding:32px;border:1px solid #edc5b0;border-radius:18px;background:#fff9f5}
    .feedback-card h2{margin:8px 0 9px;color:#79391f;font-size:27px;font-weight:900}
    .feedback-card p{margin:0 0 20px;color:#86553f;font-size:14px}
    .feedback-points{display:grid;gap:10px;margin-bottom:23px}
    .feedback-points div{display:flex;gap:10px;align-items:start;color:#74442d;font-size:14px}
    .feedback-points b{display:grid;place-items:center;width:20px;height:20px;flex:none;border-radius:50%;background:var(--orange);color:#fff;font-size:11px}
    .site-footer{padding:64px 0 22px;background:#123a33;color:#eaf0e9}
    .footer-grid{display:grid;grid-template-columns:1.3fr .8fr .9fr;gap:52px;padding-bottom:45px}
    .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:900}
    .footer-brand .brand-mark{width:31px;height:31px}
    .footer-copy{max-width:390px;margin:15px 0 0;color:#b9c9bf;font-size:14px;line-height:1.8}
    .footer-col h3{margin:0 0 12px;color:#fff;font-size:14px;font-weight:850}
    .footer-col a{display:block;width:max-content;max-width:100%;margin:7px 0;color:#bccbc2;font-size:14px;transition:.2s}
    .footer-col a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:20px;border-top:1px solid rgba(255,255,255,.13);color:#aabbb1;font-size:12px}
    @media(max-width:1050px){
      .header-inner{gap:10px}
      .brand{min-width:165px;font-size:13px}
      .nav a{padding:9px 7px;font-size:13px}
      .simulator-layout{grid-template-columns:1fr 1fr}
      .matrix{grid-template-columns:145px repeat(4,1fr)}
    }
    @media(max-width:820px){
      .header-download,.nav{display:none}
      .menu-toggle{display:block}
      .site-header.menu-open .nav{position:absolute;top:76px;left:0;right:0;display:flex;flex-direction:column;align-items:stretch;padding:14px 24px 20px;background:var(--mist);border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
      .site-header.menu-open .nav a{padding:13px 12px}
      .site-header.menu-open .nav a.active:after{left:12px;right:auto;width:26px;bottom:7px}
      .title-band{padding:36px 30px}
      .title-band h1{font-size:34px}
      .featured,.compatibility-box,.faq-feedback,.articles{grid-template-columns:1fr}
      .feature-art{min-height:300px}
      .simulator-layout{grid-template-columns:1fr}
      .matrix{grid-template-columns:130px repeat(4,1fr);overflow-x:auto}
      .matrix > div{min-width:110px;font-size:13px}
      .timeline{grid-template-columns:repeat(2,1fr);row-gap:30px}
      .timeline:before{display:none}
      .footer-grid{grid-template-columns:1fr 1fr;gap:35px}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      body{font-size:15px}
      .container{width:min(100% - 30px,var(--container))}
      .section{padding:58px 0}
      .page-top{padding-top:28px}
      .section-head{display:block;margin-bottom:23px}
      .section-head h2{font-size:26px}
      .section-head .lead{margin-top:12px}
      .title-band{padding:30px 23px;border-radius:20px}
      .title-band h1{font-size:29px}
      .title-band p{font-size:15px}
      .featured-copy,.feature-art{padding:25px}
      .featured-copy h2{font-size:26px}
      .pixel-simulator{width:215px;height:246px;transform:translate(-47%,-46%) rotate(4deg)}
      .feature-art{min-height:270px}
      .signal-card{right:14px;bottom:16px}
      .sim-card,.sim-card.large{padding:22px}
      .sim-footer{align-items:flex-start;flex-direction:column}
      .timeline{grid-template-columns:1fr}
      .compatibility-box{padding:28px 23px;gap:24px}
      .compatibility-box h2{font-size:26px}
      .compat-list{grid-template-columns:1fr}
      .article-row{grid-template-columns:56px 1fr;padding:17px}
      .article-row .text-link{display:none}
      .article-title strong,.article-title span{white-space:normal}
      .feedback-card{padding:25px}
      .footer-grid{grid-template-columns:1fr;gap:26px}
      .footer-grid>div:first-child{grid-column:auto}
      .footer-bottom{flex-direction:column;gap:5px}
    }

/* roulang page: category3 */
:root{
      --ink:#1d2925;
      --muted:#617069;
      --green:#17443c;
      --green-dark:#10362f;
      --sage:#e4ece4;
      --mist:#f6f5ef;
      --white:#fffefa;
      --orange:#e88752;
      --orange-soft:#f8dfd0;
      --line:#d6ded6;
      --shadow:0 14px 38px rgba(23,68,60,.08);
      --shadow-sm:0 7px 22px rgba(23,68,60,.07);
      --radius:18px;
      --radius-sm:11px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--mist);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.78}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(232,135,82,.42);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .section{padding:84px 0}
    .section-alt{background:#eef2ed;border-top:1px solid #dce5dc;border-bottom:1px solid #dce5dc}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:30px}
    .section-head h2{margin:7px 0 0;font-size:31px;line-height:1.35;letter-spacing:-.035em;color:var(--green)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--orange)}
    .lead{max-width:700px;margin:0;color:var(--muted);font-size:16px;line-height:1.85}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid transparent;border-radius:11px;font-size:15px;font-weight:800;transition:transform .22s ease,background .22s ease,box-shadow .22s ease,border-color .22s ease}
    .btn-primary{background:var(--green);color:#fff}
    .btn-primary:hover{background:var(--green-dark);color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,68,60,.2)}
    .btn-secondary{border-color:var(--line);background:rgba(255,255,255,.55);color:var(--green)}
    .btn-secondary:hover{background:var(--sage);border-color:#b8cbbd;color:var(--green);transform:translateY(-2px)}
    .btn-orange{background:var(--orange);color:#fff}
    .btn-orange:hover{background:#cf7040;color:#fff;transform:translateY(-2px)}
    .badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:99px;background:var(--sage);color:var(--green);font-size:12px;font-weight:800}
    .badge.orange{background:var(--orange-soft);color:#964820}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(246,245,239,.92);border-bottom:1px solid transparent;backdrop-filter:blur(12px);transition:.22s}
    .site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 5px 16px rgba(23,68,60,.06)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .brand{display:flex;align-items:center;gap:10px;min-width:205px;color:var(--green);font-weight:900;font-size:15px;line-height:1.25}
    .brand-mark{position:relative;width:34px;height:34px;border-radius:11px;background:var(--green);display:grid;place-items:center;flex:none}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:#fff;border-radius:2px}
    .brand-mark:before{width:13px;height:5px;top:9px;left:10px}
    .brand-mark:after{width:5px;height:12px;bottom:7px;right:8px;background:var(--orange)}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px}
    .nav a{position:relative;padding:9px 10px;font-size:14px;font-weight:750;color:#48554f;border-radius:9px;white-space:nowrap}
    .nav a:hover{background:var(--sage);color:var(--green)}
    .nav a.active{color:var(--green)}
    .nav a.active:after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:3px;background:var(--orange)}
    .header-download{white-space:nowrap}
    .menu-toggle{display:none;border:0;background:none;color:var(--green);padding:9px;font-size:24px;line-height:1}
    .page-top{padding:44px 0 28px}
    .crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px}
    .crumbs i{font-style:normal;color:#9aa79f}
    .crumbs a:hover{color:var(--green)}
    .title-panel{position:relative;margin-top:20px;padding:40px 44px;background:var(--sage);border:1px solid #d2ddd1;border-radius:24px;overflow:hidden}
    .title-panel:before{content:"";position:absolute;right:45px;top:-58px;width:184px;height:184px;border:1px solid rgba(23,68,60,.15);border-radius:50%}
    .title-panel:after{content:"";position:absolute;right:66px;bottom:20px;width:95px;height:56px;background-image:radial-gradient(rgba(23,68,60,.25) 1.3px,transparent 1.3px);background-size:11px 11px}
    h1{position:relative;z-index:1;max-width:790px;margin:10px 0 14px;color:var(--green);font-size:43px;line-height:1.22;letter-spacing:-.045em}
    .title-panel .lead{position:relative;z-index:1;max-width:730px}
    .topic-tags{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
    .step-track{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step-card{position:relative;min-height:216px;padding:25px 22px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.22s ease}
    .step-card:hover{transform:translateY(-4px);border-color:#b8cdbb;box-shadow:var(--shadow)}
    .step-no{display:block;margin-bottom:24px;color:var(--orange);font-size:14px;font-weight:900;letter-spacing:.08em}
    .step-card h3{margin:0 0 8px;color:var(--green);font-size:19px}
    .step-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .step-card:not(:last-child):after{content:"";position:absolute;right:-8px;top:41px;width:16px;height:16px;background:var(--orange-soft);border:3px solid var(--mist);border-radius:50%}
    .guide-layout{display:grid;grid-template-columns:.88fr 1.12fr;gap:42px;align-items:start}
    .guide-intro{position:sticky;top:105px;padding:30px;background:var(--green);border-radius:var(--radius);color:#fff}
    .guide-intro h2{margin:8px 0 14px;font-size:29px;line-height:1.35}
    .guide-intro p{margin:0;color:rgba(255,255,255,.78);font-size:15px}
    .guide-intro .badge{margin-top:22px;background:rgba(255,255,255,.14);color:#fff}
    .guide-list{border-top:1px solid var(--line)}
    .guide-row{display:grid;grid-template-columns:100px 1fr;gap:24px;padding:25px 0;border-bottom:1px solid var(--line)}
    .guide-date{font-size:13px;font-weight:850;color:var(--green)}
    .guide-date span{display:block;margin-top:4px;color:var(--orange);font-size:22px;line-height:1}
    .guide-content h3{margin:0 0 7px;color:var(--green);font-size:19px;line-height:1.45}
    .guide-content p{margin:0;color:var(--muted);font-size:14px;line-height:1.72}
    .guide-content a{display:inline-flex;align-items:center;gap:5px;margin-top:10px;color:var(--green);font-size:14px;font-weight:800}
    .guide-content a:hover{color:#b35b2c}
    .interface-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:24px;align-items:center}
    .screen-demo{position:relative;min-height:350px;padding:24px;background:#173f38;border:9px solid #d8e0d6;border-radius:29px;box-shadow:var(--shadow)}
    .screen-head{display:flex;align-items:center;justify-content:space-between;color:#fdfcf7;font-size:12px;font-weight:800}
    .screen-dot{display:flex;gap:5px}
    .screen-dot span{width:7px;height:7px;background:var(--orange);border-radius:50%}
    .screen-mainbox{height:153px;margin-top:23px;padding:20px;background:#27564c;border:1px solid rgba(255,255,255,.18);border-radius:17px;color:#fff}
    .screen-mainbox b{display:block;font-size:21px}
    .screen-mainbox small{display:block;margin-top:9px;color:rgba(255,255,255,.7)}
    .screen-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
    .screen-tabs span{padding:13px 7px;background:#f7f4ea;border-radius:10px;color:var(--green);font-size:11px;font-weight:800;text-align:center}
    .callout{position:absolute;padding:8px 11px;background:var(--white);border:1px solid #d6ded6;border-radius:9px;color:var(--green);box-shadow:var(--shadow-sm);font-size:12px;font-weight:800}
    .callout.one{right:-15px;top:105px}
    .callout.two{left:-15px;bottom:61px}
    .legend-list{display:grid;gap:12px}
    .legend-card{display:grid;grid-template-columns:42px 1fr;gap:14px;padding:17px;border:1px solid var(--line);border-radius:14px;background:var(--white)}
    .legend-number{width:34px;height:34px;display:grid;place-items:center;background:var(--orange-soft);border-radius:10px;color:#9d4f26;font-size:13px;font-weight:900}
    .legend-card h3{margin:0 0 3px;color:var(--green);font-size:16px}
    .legend-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .notice-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .notice-card{padding:28px;border:1px solid #ebcbb9;border-radius:var(--radius);background:#fff8f3}
    .notice-card.safe{border-color:#cbdacd;background:#f8fbf7}
    .notice-icon{width:42px;height:42px;display:grid;place-items:center;margin-bottom:15px;border-radius:12px;background:var(--orange-soft);color:#a6532a;font-size:19px;font-weight:900}
    .safe .notice-icon{background:var(--sage);color:var(--green)}
    .notice-card h3{margin:0 0 8px;color:var(--green);font-size:20px}
    .notice-card ul{margin:0;padding-left:19px;color:var(--muted);font-size:14px}
    .notice-card li+li{margin-top:7px}
    .device-panel{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;padding:35px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .device-panel h2{margin:8px 0 10px;color:var(--green);font-size:29px;line-height:1.35}
    .device-panel p{margin:0;color:var(--muted);font-size:15px}
    .check-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .check-item{display:flex;align-items:flex-start;gap:10px;padding:15px;background:#f4f7f2;border:1px solid #dce5dc;border-radius:12px;color:#40534b;font-size:14px;font-weight:700}
    .check-item:before{content:"✓";display:grid;place-items:center;width:21px;height:21px;flex:none;margin-top:1px;background:var(--green);border-radius:50%;color:#fff;font-size:12px}
    .news-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:var(--shadow-sm)}
    .news-item{display:grid;grid-template-columns:128px 1fr auto;gap:22px;align-items:center;padding:21px 25px;border-bottom:1px solid var(--line)}
    .news-item:last-child{border-bottom:0}
    .news-time{color:var(--muted);font-size:13px;font-weight:800}
    .news-item h3{margin:0 0 4px;color:var(--green);font-size:17px}
    .news-item p{margin:0;color:var(--muted);font-size:13px}
    .news-more{color:var(--green);font-size:14px;font-weight:850;white-space:nowrap}
    .news-more:hover{color:#bd6030}
    .list-footer{display:flex;justify-content:flex-end;padding:18px 25px;background:#f6f8f4}
    .faq-feedback{display:grid;grid-template-columns:1.08fr .92fr;gap:30px;align-items:start}
    .faq-list{display:grid;gap:10px}
    .faq-item{border:1px solid var(--line);border-radius:13px;background:var(--white);overflow:hidden}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 19px;border:0;background:transparent;color:var(--green);font-size:15px;font-weight:850;text-align:left}
    .faq-question span:last-child{color:var(--orange);font-size:22px;font-weight:400;transition:transform .2s}
    .faq-answer{display:none;padding:0 19px 18px;color:var(--muted);font-size:14px;line-height:1.75}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .feedback-card{padding:29px;background:var(--green);border-radius:var(--radius);color:#fff}
    .feedback-card h2{margin:7px 0 9px;font-size:27px;line-height:1.35}
    .feedback-card p{margin:0 0 18px;color:rgba(255,255,255,.77);font-size:14px}
    .mini-form{display:grid;gap:11px}
    .mini-form select,.mini-form textarea{width:100%;border:1px solid rgba(255,255,255,.25);border-radius:10px;background:rgba(255,255,255,.1);padding:11px 12px;color:#fff;outline:none}
    .mini-form select option{color:var(--ink)}
    .mini-form textarea{min-height:82px;resize:vertical}
    .mini-form select:focus,.mini-form textarea:focus{border-color:var(--orange);background:rgba(255,255,255,.16)}
    .mini-form .btn{width:100%;background:var(--orange);color:#fff}
    .mini-form .btn:hover{background:#cf7040}
    .form-status{display:none;margin:2px 0 0;color:#fbe3d6;font-size:13px}
    .return-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .site-footer{padding:62px 0 22px;background:#123a33;color:#e8eee9}
    .footer-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:55px;padding-bottom:40px}
    .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:900}
    .footer-brand .brand-mark{width:32px;height:32px}
    .footer-copy{max-width:370px;margin:15px 0 0;color:#bfd0c6;font-size:14px;line-height:1.75}
    .footer-col h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-col a{display:block;margin:7px 0;color:#bfd0c6;font-size:14px;transition:.2s}
    .footer-col a:hover{color:#f1a074;padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);color:#aac0b4;font-size:13px}
    @media (max-width:1024px){
      .header-inner{gap:10px}
      .brand{min-width:170px;font-size:13px}
      .nav a{padding:8px 7px;font-size:13px}
      .step-track{grid-template-columns:repeat(2,1fr)}
      .step-card:not(:last-child):after{display:none}
      .guide-layout{gap:28px}
      .faq-feedback{grid-template-columns:1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 32px,var(--container))}
      .section{padding:58px 0}
      .header-inner{height:67px}
      .menu-toggle{display:block}
      .header-download{display:none}
      .nav{position:absolute;top:67px;left:16px;right:16px;display:none;align-items:stretch;flex-direction:column;padding:10px;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
      .nav.open{display:flex}
      .nav a{padding:12px}
      .nav a.active:after{left:12px;right:auto;bottom:6px;width:26px}
      .page-top{padding:28px 0 14px}
      .title-panel{padding:29px 25px}
      h1{font-size:34px}
      .section-head{display:block;margin-bottom:23px}
      .section-head h2{font-size:27px}
      .guide-layout,.interface-grid,.device-panel{grid-template-columns:1fr}
      .guide-intro{position:relative;top:auto}
      .screen-demo{min-height:315px}
      .news-item{grid-template-columns:1fr;gap:8px;padding:19px}
      .news-more{margin-top:2px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer-bottom{flex-direction:column;gap:6px}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .brand{min-width:auto;max-width:230px}
      .brand-mark{width:31px;height:31px}
      .step-track,.notice-grid,.check-list{grid-template-columns:1fr}
      .step-card{min-height:auto}
      .guide-row{grid-template-columns:67px 1fr;gap:13px}
      .guide-date span{font-size:18px}
      .screen-demo{padding:18px;border-width:7px}
      .callout{font-size:10px}
      .callout.one{right:-5px}
      .callout.two{left:-5px}
      .return-row .btn{width:100%}
      .title-panel:before,.title-panel:after{opacity:.55}
    }

/* roulang page: category4 */
:root{
      --ink:#1d2925;
      --muted:#617069;
      --green:#17443c;
      --green-dark:#10362f;
      --sage:#e4ece4;
      --mist:#f6f5ef;
      --white:#fffefa;
      --orange:#e88752;
      --orange-soft:#f8dfd0;
      --line:#d6ded6;
      --shadow:0 14px 38px rgba(23,68,60,.08);
      --shadow-sm:0 7px 22px rgba(23,68,60,.07);
      --radius:18px;
      --radius-sm:11px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--mist);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.78}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(232,135,82,.42);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .section{padding:82px 0}
    .section-soft{background:var(--sage)}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:30px}
    .section-head h2{margin:8px 0 0;font-size:31px;line-height:1.3;letter-spacing:-.03em;color:var(--green)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--orange)}
    .lead{max-width:680px;margin:0;color:var(--muted);font-size:16px;line-height:1.85}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid transparent;border-radius:11px;font-size:15px;font-weight:800;transition:transform .22s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease}
    .btn-primary{background:var(--green);color:#fff}
    .btn-primary:hover{background:var(--green-dark);color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,68,60,.2)}
    .btn-secondary{border-color:var(--line);background:rgba(255,255,255,.55);color:var(--green)}
    .btn-secondary:hover{background:var(--sage);border-color:#b8cbbd;color:var(--green);transform:translateY(-2px)}
    .btn-orange{background:var(--orange);color:#fff}
    .btn-orange:hover{background:#cf7040;color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(232,135,82,.2)}
    .badge{display:inline-flex;align-items:center;width:max-content;padding:4px 10px;border-radius:99px;background:var(--sage);color:var(--green);font-size:12px;font-weight:800;line-height:1.3}
    .badge.orange{background:var(--orange-soft);color:#9c4c24}
    .badge.outline{background:transparent;border:1px solid var(--line);color:var(--muted)}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(246,245,239,.92);border-bottom:1px solid transparent;backdrop-filter:blur(12px);transition:.2s}
    .site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 5px 16px rgba(23,68,60,.06)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;min-width:205px;color:var(--green);font-weight:900;font-size:15px;line-height:1.25}
    .brand-mark{position:relative;width:34px;height:34px;border-radius:11px;background:var(--green);display:grid;place-items:center;flex:none}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:#fff;border-radius:2px}
    .brand-mark:before{width:13px;height:5px;top:9px;left:10px}
    .brand-mark:after{width:5px;height:12px;bottom:7px;right:8px;background:var(--orange)}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px}
    .nav a{position:relative;padding:9px 10px;font-size:14px;font-weight:750;color:#48554f;border-radius:9px;white-space:nowrap}
    .nav a:hover{background:var(--sage);color:var(--green)}
    .nav a.active{color:var(--green)}
    .nav a.active:after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:3px;background:var(--orange)}
    .header-download{white-space:nowrap}
    .menu-toggle{display:none;background:none;border:0;color:var(--green);padding:10px;font-size:23px;line-height:1}
    .page-banner{padding:48px 0 44px;background:var(--sage);border-bottom:1px solid #d2ddd1;position:relative;overflow:hidden}
    .page-banner:after{content:"";position:absolute;right:7%;top:-70px;width:240px;height:240px;border:1px solid rgba(23,68,60,.14);border-radius:50%}
    .breadcrumbs{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:14px;color:var(--muted);font-size:13px}
    .breadcrumbs span{color:#91a097}
    .page-banner h1{position:relative;z-index:1;max-width:880px;margin:0;color:var(--green);font-size:42px;line-height:1.22;letter-spacing:-.04em}
    .page-banner p{position:relative;z-index:1;max-width:690px;margin:16px 0 0;color:var(--muted);font-size:16px}
    .download-stage{display:grid;grid-template-columns:1fr .9fr;gap:28px;align-items:center;padding:32px;border:1px solid var(--line);border-radius:24px;background:var(--white);box-shadow:var(--shadow-sm)}
    .download-copy h2{margin:10px 0 12px;color:var(--green);font-size:29px;line-height:1.35}
    .download-copy p{margin:0;color:var(--muted)}
    .download-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
    .pixel-art{position:relative;min-height:225px;border-radius:18px;background:var(--green);overflow:hidden}
    .pixel-art:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.2) 1px,transparent 1px);background-size:13px 13px;opacity:.7}
    .pixel-art .window{position:absolute;left:15%;right:15%;top:20%;bottom:16%;border:8px solid var(--white);border-radius:17px;background:#f2f5ee;box-shadow:0 12px 0 rgba(0,0,0,.08)}
    .window-top{height:29px;background:#dce7dc;border-bottom:1px solid #cad8cb}
    .window-top:before{content:"";display:block;width:48px;height:7px;border-radius:9px;background:var(--orange);margin:10px}
    .window-main{display:grid;grid-template-columns:70px 1fr;gap:11px;padding:15px}
    .window-side{height:106px;border-radius:8px;background:#d6e2d6}
    .window-panels{display:grid;gap:9px}
    .window-panels i{height:29px;border-radius:7px;background:#dce7dc}
    .window-panels i:first-child{background:var(--orange-soft)}
    .version-stack{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
    .version-card{position:relative;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);box-shadow:var(--shadow-sm);transition:.22s ease}
    .version-card:hover{transform:translateY(-4px);border-color:#b8cbbd;box-shadow:var(--shadow)}
    .version-card.ios{margin-top:42px;background:#f1f5ef}
    .platform-icon{width:53px;height:53px;display:grid;place-items:center;margin-bottom:18px;border-radius:15px;background:var(--green);color:#fff;font-size:20px;font-weight:900}
    .ios .platform-icon{background:var(--orange);font-size:18px}
    .version-card h3{margin:0;color:var(--green);font-size:22px}
    .version-card p{margin:9px 0 18px;color:var(--muted);font-size:14px}
    .version-info{margin:0 0 20px;padding:0;list-style:none;border-top:1px solid var(--line)}
    .version-info li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}
    .version-info span{color:var(--muted)}
    .version-info strong{color:var(--ink);font-weight:750;text-align:right}
    .version-card .btn{width:100%}
    .install-grid{display:grid;grid-template-columns:.84fr 1.16fr;gap:28px;align-items:start}
    .install-intro{padding:29px;border-radius:var(--radius);background:var(--green);color:#fff}
    .install-intro h2{margin:10px 0 12px;font-size:29px;line-height:1.35}
    .install-intro p{margin:0;color:rgba(255,255,255,.76)}
    .install-intro .badge{margin-top:22px;background:rgba(255,255,255,.13);color:#fff}
    .accordion-list{display:grid;gap:11px}
    .step-panel{border:1px solid var(--line);border-radius:13px;background:var(--white);overflow:hidden}
    .step-panel summary{display:flex;align-items:center;gap:14px;padding:17px 19px;color:var(--green);font-size:16px;font-weight:850;cursor:pointer;list-style:none}
    .step-panel summary::-webkit-details-marker{display:none}
    .step-no{display:grid;place-items:center;width:29px;height:29px;border-radius:9px;background:var(--orange-soft);color:#9c4c24;font-size:12px;flex:none}
    .step-panel summary:after{content:"+";margin-left:auto;font-size:21px;font-weight:500;color:var(--orange)}
    .step-panel[open] summary:after{content:"−"}
    .step-detail{padding:0 19px 18px 62px;color:var(--muted);font-size:14px;border-top:1px solid #edf0eb}
    .preview-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .phone-preview{min-height:300px;padding:11px;border:1px solid var(--line);border-radius:23px;background:var(--white);box-shadow:var(--shadow-sm);transition:.2s}
    .phone-preview:hover{transform:translateY(-5px)}
    .phone-top{width:48px;height:8px;margin:0 auto 10px;border-radius:99px;background:#c8d4c8}
    .phone-screen{height:250px;padding:15px;border-radius:14px;background:#e5eee5;overflow:hidden}
    .phone-screen.dark{background:var(--green)}
    .phone-screen.peach{background:var(--orange-soft)}
    .screen-title{display:block;margin-bottom:16px;color:var(--green);font-size:11px;font-weight:900}
    .dark .screen-title{color:#fff}
    .preview-banner{height:70px;border-radius:10px;background:var(--green);position:relative}
    .preview-banner:after{content:"";position:absolute;width:54px;height:54px;border-radius:50%;right:11px;bottom:8px;border:1px solid rgba(255,255,255,.42)}
    .preview-lines{display:grid;gap:8px;margin-top:13px}
    .preview-lines i{height:12px;border-radius:5px;background:#cbd8cc}
    .preview-lines i:nth-child(2){width:74%;background:#dfe8df}
    .dark .preview-banner{background:var(--orange)}
    .dark .preview-lines i{background:rgba(255,255,255,.24)}
    .dark .preview-lines i:nth-child(2){background:rgba(255,255,255,.13)}
    .peach .preview-banner{background:#d66f3a}
    .log-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .log-list{border:1px solid var(--line);border-radius:var(--radius);background:var(--white);overflow:hidden}
    .log-item{display:grid;grid-template-columns:92px 1fr;gap:18px;padding:20px 22px;border-bottom:1px solid var(--line)}
    .log-item:last-child{border-bottom:0}
    .log-date{color:var(--orange);font-size:13px;font-weight:850}
    .log-content strong{display:block;color:var(--green);font-size:16px}
    .log-content p{margin:3px 0 0;color:var(--muted);font-size:14px}
    .log-note{padding:29px;border-radius:var(--radius);background:var(--sage);border:1px solid #d3dfd3}
    .log-note h3{margin:8px 0 12px;color:var(--green);font-size:22px}
    .log-note p{margin:0;color:var(--muted);font-size:14px}
    .log-note ul{margin:17px 0 0;padding:0;list-style:none}
    .log-note li{position:relative;padding:8px 0 8px 19px;border-bottom:1px solid rgba(23,68,60,.1);font-size:14px}
    .log-note li:before{content:"";position:absolute;left:0;top:18px;width:7px;height:7px;border-radius:50%;background:var(--orange)}
    .notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .notice-card{padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}
    .notice-card b{display:grid;place-items:center;width:38px;height:38px;margin-bottom:14px;border-radius:11px;background:var(--orange-soft);color:#9c4c24;font-size:16px}
    .notice-card h3{margin:0 0 7px;color:var(--green);font-size:18px}
    .notice-card p{margin:0;color:var(--muted);font-size:14px}
    .article-list{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}
    .article-row{display:grid;grid-template-columns:90px 1fr auto;gap:19px;align-items:center;padding:20px 23px;border-bottom:1px solid var(--line)}
    .article-row:last-child{border-bottom:0}
    .article-date{color:var(--orange);font-size:13px;font-weight:850}
    .article-main h3{margin:0;color:var(--green);font-size:17px}
    .article-main p{margin:4px 0 0;color:var(--muted);font-size:14px}
    .article-arrow{color:var(--green);font-size:21px}
    .more-line{margin-top:20px;text-align:right}
    .more-line a{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:14px;font-weight:850}
    .more-line a:hover{color:var(--orange)}
    .support-wrap{display:grid;grid-template-columns:.93fr 1.07fr;gap:30px;padding:36px;border:1px solid #d0ddd1;border-radius:24px;background:var(--sage)}
    .support-copy h2{margin:8px 0 12px;color:var(--green);font-size:29px;line-height:1.35}
    .support-copy p{margin:0;color:var(--muted)}
    .support-points{display:grid;gap:10px;margin-top:21px}
    .support-points span{display:flex;align-items:center;gap:10px;color:var(--green);font-size:14px;font-weight:750}
    .support-points i{width:8px;height:8px;border-radius:50%;background:var(--orange)}
    .feedback-form{display:grid;grid-template-columns:1fr 1fr;gap:13px;padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--white)}
    .field{display:grid;gap:6px}
    .field.full{grid-column:1/-1}
    .field label{color:var(--green);font-size:13px;font-weight:800}
    .field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fffefa;color:var(--ink);font-size:14px;transition:.2s}
    .field textarea{min-height:86px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(23,68,60,.1);outline:0}
    .form-note{grid-column:1/-1;margin:0;color:var(--muted);font-size:12px}
    .feedback-form .btn{grid-column:1/-1}
    .site-footer{padding:58px 0 22px;background:var(--green);color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.45fr .8fr .9fr;gap:55px}
    .footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:900}
    .footer-brand .brand-mark{width:31px;height:31px;background:#fff}
    .footer-brand .brand-mark:before{background:var(--green)}
    .footer-brand .brand-mark:after{background:var(--orange)}
    .footer-copy{max-width:390px;margin:16px 0 0;color:rgba(255,255,255,.7);font-size:14px;line-height:1.8}
    .footer-col h3{margin:3px 0 13px;color:#fff;font-size:15px}
    .footer-col a{display:block;width:max-content;max-width:100%;margin:7px 0;color:rgba(255,255,255,.7);font-size:14px;transition:.2s}
    .footer-col a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.62);font-size:12px}
    @media(max-width:1024px){
      .nav a{padding:9px 7px;font-size:13px}
      .brand{min-width:170px}
      .download-stage,.install-grid,.support-wrap{grid-template-columns:1fr}
      .pixel-art{min-height:190px}
      .preview-rail{grid-template-columns:repeat(4,minmax(150px,1fr));overflow-x:auto;padding-bottom:8px}
      .phone-preview{min-width:150px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,var(--container))}
      .section{padding:58px 0}
      .header-inner{height:68px}
      .header-download{display:none}
      .menu-toggle{display:block}
      .nav{position:absolute;top:68px;left:16px;right:16px;display:none;align-items:stretch;flex-direction:column;padding:10px;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
      .nav.open{display:flex}
      .nav a{padding:11px 12px}
      .nav a.active:after{left:12px;right:auto;bottom:7px;width:24px}
      .page-banner{padding:37px 0}
      .page-banner h1{font-size:34px}
      .section-head{display:block;margin-bottom:24px}
      .section-head h2{font-size:27px}
      .section-head .lead{margin-top:13px}
      .version-stack,.log-grid,.support-wrap{grid-template-columns:1fr}
      .version-card.ios{margin-top:0}
      .notice-grid{grid-template-columns:1fr}
      .article-row{grid-template-columns:70px 1fr}
      .article-arrow{display:none}
      .footer-grid{grid-template-columns:1fr;gap:28px}
    }
    @media(max-width:520px){
      body{font-size:15px}
      .page-banner h1{font-size:29px}
      .page-banner p{font-size:15px}
      .section-head h2,.download-copy h2,.install-intro h2,.support-copy h2{font-size:25px}
      .download-stage,.support-wrap{padding:22px}
      .version-card{padding:23px}
      .feedback-form{grid-template-columns:1fr;padding:16px}
      .field.full{grid-column:auto}
      .feedback-form .btn{grid-column:auto}
      .log-item{grid-template-columns:1fr;gap:4px;padding:18px}
      .article-row{grid-template-columns:1fr;gap:5px;padding:18px}
      .footer-bottom{display:block;margin-top:30px}
      .footer-bottom span{display:block;margin:5px 0}
    }