/* roulang page: index */
:root{
  --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
  --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
  --soft:#e8f0eb;--radius:12px;--radius-lg:20px;--shadow:0 12px 30px rgba(18,35,31,.07);
  --shadow-hover:0 18px 36px rgba(18,35,31,.13);--container:1200px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,border-color .2s ease}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}button{cursor:pointer}
:focus-visible{outline:3px solid rgba(22,122,108,.28);outline-offset:3px}.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,221,215,.85)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap;font-size:18px}.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);position:relative;overflow:hidden}.brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}.brand-mark:before{width:19px;height:19px;left:5px;top:5px}.brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
.nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}.nav a{font-size:14px;font-weight:650;color:#43524c;position:relative;padding:26px 0}.nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}.nav a:hover,.nav a.active{color:var(--teal)}.nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.2;transition:.2s}.btn-primary{background:var(--teal);color:#fff}.btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px)}.btn-outline{color:var(--teal);border-color:var(--teal);background:transparent}.btn-outline:hover{background:#e7f2ef}.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
.hero{background:var(--ink);color:#fff;overflow:hidden;position:relative}.hero:before{content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(126,211,196,.18);border-radius:50%;right:-175px;top:-270px}.hero:after{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(230,110,75,.28);border-radius:50%;right:30%;bottom:-185px}
.hero-grid{min-height:600px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:70px;position:relative;z-index:1;padding:78px 0}.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.08em;font-weight:800}.eyebrow{color:#9fdbcf}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}h1,h2,h3,p{margin-top:0}h1{font-size:46px;line-height:1.22;letter-spacing:-.035em;margin:18px 0 20px;max-width:690px}.hero-copy p{max-width:600px;color:#d0dbd6;font-size:17px;line-height:1.85;margin-bottom:28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero .btn-outline{color:#d9f4ed;border-color:rgba(217,244,237,.55)}.hero .btn-outline:hover{background:rgba(255,255,255,.1)}
.hero-visual{min-height:405px;position:relative}.visual-panel{position:absolute;right:0;top:10px;width:89%;height:350px;border:1px solid rgba(200,235,225,.25);border-radius:20px;background:linear-gradient(140deg,#1e3b35,#142b26);padding:25px;overflow:hidden}.visual-panel:after{content:"";position:absolute;width:250px;height:250px;border-radius:50%;border:1px solid rgba(126,211,196,.3);right:-70px;top:-100px}.screen-lines{display:grid;gap:11px;width:55%;margin-top:43px}.screen-lines i{height:11px;border-radius:30px;background:rgba(236,244,239,.14)}.screen-lines i:nth-child(2){width:72%;background:#72cbbb}.screen-lines i:nth-child(4){width:50%;background:rgba(230,110,75,.8)}.device{position:absolute;width:200px;height:388px;right:55px;bottom:-42px;border:7px solid #dbe5df;border-radius:29px;background:#f8f6ef;padding:13px;box-shadow:0 22px 45px rgba(0,0,0,.28);transform:rotate(5deg)}.device:before{content:"";position:absolute;width:70px;height:6px;border-radius:6px;background:#28443d;left:58px;top:7px}.device-screen{height:100%;border-radius:18px;background:#173a32;padding:24px 16px;color:#eff8f4}.mini-logo{font-size:12px;color:#a6e2d6}.mini-card{height:105px;border-radius:13px;margin:20px 0 12px;background:linear-gradient(145deg,#228775,#72cbbb);position:relative}.mini-card:after{content:"";position:absolute;width:38px;height:38px;border-radius:50%;background:var(--coral);right:16px;bottom:14px}.mini-row{height:12px;margin:11px 0;border-radius:8px;background:rgba(255,255,255,.18)}.mini-row.short{width:66%}
.trust-strip{position:relative;z-index:2;margin-top:-1px;border-top:1px solid rgba(255,255,255,.13);background:#173029}.trust-grid{display:grid;grid-template-columns:repeat(3,1fr)}.trust-item{padding:18px 25px;border-right:1px solid rgba(255,255,255,.12);display:flex;align-items:center;gap:12px;color:#dbe8e2;font-size:14px}.trust-item:last-child{border:0}.trust-icon{color:#86d5c5;font-size:20px}
.section{padding:92px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:34px}.section-head h2,.intro-side h2{font-size:30px;line-height:1.28;letter-spacing:-.02em;margin:0}.section-head p,.intro-side p{color:var(--muted);margin:12px 0 0;max-width:570px}.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-weight:750;font-size:14px;white-space:nowrap}.text-link:hover{gap:12px;text-decoration:underline;text-underline-offset:4px}
.guide-layout{display:grid;grid-template-columns:4fr 8fr;gap:50px;align-items:start}.intro-side{padding:16px 26px 0 0}.content-mosaic{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}.feature-card{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--white);padding:26px;box-shadow:0 5px 16px rgba(18,35,31,.03);transition:.25s;min-height:205px;overflow:hidden;position:relative}.feature-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-hover)}.feature-card.main{grid-column:1/-1;min-height:248px;background:#e8efea;padding-right:43%}.feature-card.main:after{content:"";position:absolute;width:210px;height:150px;right:25px;bottom:0;border-radius:20px 20px 0 0;background:linear-gradient(145deg,#1b4a40,#2d9380);box-shadow:inset 0 0 0 10px rgba(255,255,255,.1)}.feature-card.main:before{content:"";position:absolute;width:76px;height:76px;border:1px solid #9accc2;border-radius:50%;right:92px;top:38px}.tag{color:var(--teal);letter-spacing:.04em}.tag.coral{color:#c55737}.feature-card h3{font-size:20px;line-height:1.4;margin:11px 0 8px}.feature-card p{font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:15px}.feature-card .text-link{font-size:13px}.small-art{width:48px;height:48px;border-radius:13px;background:var(--soft);display:grid;place-items:center;color:var(--teal);font-size:22px;margin-bottom:18px}
.download-section{padding:18px 0 92px}.download-panel{background:var(--ink);border-radius:var(--radius-lg);color:#fff;padding:57px 60px;display:grid;grid-template-columns:1fr .8fr;gap:50px;overflow:hidden;position:relative}.download-panel:before{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(126,211,196,.16);border-radius:50%;right:-280px;bottom:-300px}.download-copy{position:relative;z-index:1}.download-copy h2{font-size:32px;line-height:1.3;margin:14px 0}.download-copy p{color:#c4d2cc;max-width:540px}.version-note{display:flex;align-items:flex-start;gap:10px;padding:13px 15px;border-left:2px solid var(--coral);background:rgba(255,255,255,.07);color:#d9e4df;font-size:13px;margin:23px 0}.download-actions{display:flex;gap:12px;flex-wrap:wrap}.download-actions .btn{min-width:145px}.download-actions .btn-outline{border-color:#8dcfc1;color:#d8f5ed}.download-visual{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;gap:22px}.qr-card{background:var(--white);color:var(--text);border-radius:14px;padding:15px;width:145px;text-align:center;box-shadow:var(--shadow)}.qr{width:105px;height:105px;margin:0 auto 9px;background:repeating-linear-gradient(90deg,#172b26 0 7px,#fffdf8 7px 12px),repeating-linear-gradient(#172b26 0 6px,#fffdf8 6px 12px);position:relative}.qr:after{content:"";position:absolute;inset:27px;background:#fffdf8;border:8px solid #172b26}.qr-card span{font-size:12px;font-weight:700}.download-device{width:174px;height:320px;border:6px solid #c9d8d1;background:#f5f3ee;border-radius:27px;padding:11px;transform:rotate(-6deg);box-shadow:0 24px 35px rgba(0,0,0,.25)}.download-device div{height:100%;border-radius:16px;background:linear-gradient(155deg,#176f61,#14342d);position:relative}.download-device div:before{content:"非凡娱乐";position:absolute;top:40px;left:19px;font-weight:800;color:#effaf6;font-size:18px}.download-device div:after{content:"";position:absolute;left:19px;right:19px;bottom:37px;height:85px;border-radius:14px;background:rgba(255,255,255,.15)}details{margin-top:20px;border-top:1px solid rgba(255,255,255,.2);padding-top:14px;color:#d3e0db;font-size:13px}summary{cursor:pointer;color:#fff;font-weight:700}details p{font-size:13px;margin:9px 0 0!important}
.news-section{background:#eeece6}.news-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.lead-news,.news-row{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);transition:.22s}.lead-news:hover,.news-row:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-3px)}.lead-news{padding:25px;min-height:380px;position:relative;overflow:hidden}.lead-art{height:145px;border-radius:11px;margin-bottom:22px;background:linear-gradient(130deg,#183d34,#286f61);position:relative;overflow:hidden}.lead-art:before{content:"";position:absolute;width:175px;height:175px;border:1px solid rgba(182,231,218,.4);border-radius:50%;right:48px;top:-70px}.lead-art:after{content:"";position:absolute;left:30px;bottom:28px;width:50%;height:9px;border-radius:9px;background:#9ad8ca;box-shadow:0 -23px 0 rgba(255,255,255,.28)}.lead-news h3{font-size:22px;line-height:1.42;margin:10px 0}.lead-news p{color:var(--muted);font-size:14px;margin:0 0 15px}.meta{font-size:12px;color:#78857f}.news-list{display:flex;flex-direction:column;gap:10px}.news-row{padding:16px 18px;display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;min-height:84px}.news-row h3{font-size:15px;line-height:1.45;margin:3px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.news-row p{display:none}.news-arrow{color:var(--teal);font-size:20px}.empty-state{grid-column:1/-1;border:1px dashed #b9c6c0;border-radius:var(--radius);background:var(--white);padding:44px;text-align:center;color:var(--muted)}.empty-icon{font-size:30px;color:var(--teal);margin-bottom:8px}
.ribbon{padding:0 0 92px}.ribbon-box{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr)}.ribbon-item{padding:29px 28px;display:grid;grid-template-columns:auto 1fr;gap:16px;border-right:1px solid var(--line)}.ribbon-item:last-child{border:0}.ribbon-num{font-size:28px;line-height:1;color:var(--teal);font-weight:800}.ribbon-item h3{font-size:17px;margin:0 0 3px}.ribbon-item p{font-size:13px;color:var(--muted);line-height:1.65;margin:0}
.faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:75px}.faq-copy h2{font-size:30px;line-height:1.3;margin:0 0 12px}.faq-copy p{color:var(--muted);margin-bottom:22px}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;border:0;background:transparent;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:19px 0;color:var(--text);font-size:16px;font-weight:750}.faq-question span:last-child{font-size:25px;color:var(--teal);font-weight:400}.faq-answer{display:none;padding:0 20px 18px;border-left:3px solid var(--teal);color:var(--muted);font-size:14px;line-height:1.8}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question{color:var(--teal)}
.final-cta{padding:0 0 84px}.cta-panel{background:#18352f;color:#fff;border-radius:var(--radius-lg);padding:38px 48px;display:flex;align-items:center;justify-content:space-between;gap:24px;position:relative;overflow:hidden}.cta-panel:after{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(126,211,196,.22);border-radius:50%;right:8%;top:-110px}.cta-panel h2{font-size:27px;line-height:1.3;margin:0 0 6px;position:relative;z-index:1}.cta-panel p{margin:0;color:#cce0d9;font-size:14px;position:relative;z-index:1}.cta-panel .btn{position:relative;z-index:1;white-space:nowrap}
.site-footer{background:var(--ink);color:#d5e0db;border-top:2px solid var(--teal);padding:56px 0 20px}.footer-grid{display:grid;grid-template-columns:1.45fr repeat(3,1fr);gap:35px;padding-bottom:38px}.footer-brand p{font-size:13px;color:#aebfb8;max-width:280px;margin:14px 0 0}.footer-title{color:#fff;font-size:14px;font-weight:800;margin:0 0 13px}.footer-links{display:flex;flex-direction:column;gap:8px}.footer-links a{font-size:13px;color:#b8c8c1}.footer-links a:hover{color:#86d5c5;text-decoration:underline;text-underline-offset:4px}.footer-bottom{border-top:1px solid rgba(255,255,255,.13);padding-top:18px;display:flex;justify-content:space-between;gap:16px;color:#91a69d;font-size:12px}.footer-bottom a:hover{color:#d8f5ed}
@media(max-width:1024px){.nav{gap:14px}.nav a{font-size:13px}.hero-grid{gap:35px}.guide-layout,.faq-layout{gap:35px}.download-panel{padding:45px}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2}}
@media(max-width:768px){.container{width:min(calc(100% - 32px),var(--container))}.header-inner{height:66px}.nav{display:none}.menu-toggle{display:inline-grid;place-items:center}.header-actions .btn{display:none}.site-header.menu-open .nav{display:flex;position:absolute;left:0;right:0;top:65px;background:var(--white);border-bottom:1px solid var(--line);padding:8px 16px 18px;flex-direction:column;align-items:stretch;gap:0}.site-header.menu-open .nav a{padding:12px 10px}.site-header.menu-open .nav a:after{left:0;right:auto;top:12px;bottom:12px;width:3px;height:auto}.hero-grid{grid-template-columns:1fr;padding:56px 0 38px;min-height:auto}.hero-visual{min-height:305px}.visual-panel{width:100%;height:270px}.device{width:150px;height:290px;right:34px}.hero h1{font-size:33px}.trust-grid{grid-template-columns:1fr}.trust-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding:13px 4px}.section{padding:62px 0}.guide-layout,.content-mosaic,.download-panel,.news-grid,.faq-layout{grid-template-columns:1fr}.intro-side{padding:0}.feature-card.main{padding-right:26px}.feature-card.main:after,.feature-card.main:before{opacity:.25}.download-section{padding-bottom:62px}.download-panel{padding:35px 25px;gap:26px}.download-visual{justify-content:flex-start}.section-head{align-items:flex-start;flex-direction:column;margin-bottom:25px}.news-row{grid-template-columns:1fr auto}.news-row .tag{grid-column:1/-1}.news-row h3{white-space:normal}.ribbon{padding-bottom:62px}.ribbon-box{grid-template-columns:1fr}.ribbon-item{border-right:0;border-bottom:1px solid var(--line)}.ribbon-item:last-child{border-bottom:0}.cta-panel{padding:30px 25px;align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-grid>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.faq-copy{margin-bottom:5px}}
@media(max-width:520px){h1{font-size:29px}.hero-copy p{font-size:15px}.hero-actions,.download-actions{flex-direction:column}.hero-actions .btn,.download-actions .btn{width:100%}.hero-visual{min-height:255px}.visual-panel{height:225px}.device{width:125px;height:245px;right:20px;bottom:-25px}.section-head h2,.intro-side h2,.faq-copy h2{font-size:26px}.download-copy h2{font-size:27px}.download-visual{gap:13px}.download-device{width:132px;height:245px}.qr-card{width:130px;padding:11px}.qr{width:94px;height:94px}.lead-news{padding:18px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}}

/* roulang page: article */
:root{
  --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
  --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
  --soft:#e8f0eb;--radius:12px;--radius-lg:20px;--shadow:0 12px 30px rgba(18,35,31,.07);
  --shadow-hover:0 18px 36px rgba(18,35,31,.13);--container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,border-color .2s ease,background .2s ease}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(22,122,108,.3);outline-offset:3px}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,221,215,.85)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap;font-size:18px}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);position:relative;overflow:hidden;flex:0 0 32px}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}
.brand-mark:before{width:19px;height:19px;left:5px;top:5px}
.brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
.nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
.nav a{font-size:14px;font-weight:650;color:#43524c;position:relative;padding:26px 0;white-space:nowrap}
.nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}
.nav a:hover,.nav a.active{color:var(--teal)}
.nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.2;transition:.2s}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-dark);color:#fff;transform:translateY(-1px)}
.btn-outline{color:var(--teal);border-color:var(--teal);background:transparent}
.btn-outline:hover{background:#e7f2ef;color:var(--teal-dark)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
.article-banner{position:relative;overflow:hidden;padding:56px 0 48px;background:#edf0ea;border-bottom:1px solid var(--line)}
.article-banner:before{content:"";position:absolute;width:380px;height:380px;border:1px solid rgba(22,122,108,.17);border-radius:50%;right:-110px;top:-225px}
.article-banner:after{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(230,110,75,.3);border-radius:50%;left:8%;bottom:-135px}
.banner-inner{position:relative;z-index:1;max-width:930px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 19px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--teal);font-weight:700}
.breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{color:#9aa49f}
.breadcrumb .current{color:var(--text);max-width:440px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-category{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:12px;font-weight:800;letter-spacing:.06em}
.article-category:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
.article-banner h1{max-width:900px;margin:12px 0 16px;font-size:clamp(32px,4vw,46px);line-height:1.22;letter-spacing:-.035em;font-weight:800;color:var(--ink)}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;color:var(--muted);font-size:13px}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta span:before{content:"";width:4px;height:4px;border-radius:50%;background:#8aa49c}
.article-meta span:first-child:before{display:none}
.page-section{padding:62px 0 94px}
.article-layout{display:grid;grid-template-columns:minmax(0,800px) minmax(250px,300px);justify-content:space-between;gap:56px}
.article-main{min-width:0}
.article-sheet{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(26px,4vw,54px);box-shadow:var(--shadow)}
.article-summary{margin:0 0 32px;padding:18px 20px;border-left:4px solid var(--teal);border-radius:0 10px 10px 0;background:var(--soft);font-size:17px;line-height:1.85;color:#395149}
.article-content{font-size:17px;line-height:1.9;color:#28332f;word-break:break-word}
.article-content>*:first-child{margin-top:0}
.article-content p{margin:0 0 21px}
.article-content h2{font-size:28px;line-height:1.35;letter-spacing:-.02em;color:var(--ink);margin:50px 0 20px;font-weight:800}
.article-content h3{font-size:21px;line-height:1.45;color:var(--ink);margin:34px 0 14px;font-weight:800}
.article-content a{color:var(--teal);font-weight:700;text-decoration:underline;text-decoration-color:rgba(22,122,108,.35);text-underline-offset:4px}
.article-content a:hover{color:var(--teal-dark)}
.article-content ul,.article-content ol{margin:0 0 24px;padding-left:1.5em}
.article-content li{margin:8px 0;padding-left:4px}
.article-content blockquote{margin:28px 0;padding:19px 22px;background:#edf4f0;border-left:4px solid var(--teal);border-radius:0 10px 10px 0;color:#35534a}
.article-content img{width:auto;max-width:100%;height:auto;margin:30px auto;border:1px solid var(--line);border-radius:12px}
.article-content figure{margin:30px 0}
.article-content figcaption{margin-top:9px;text-align:center;color:var(--muted);font-size:13px}
.article-content table{width:100%;margin:28px 0;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}
.article-content th,.article-content td{padding:12px 14px;border:1px solid var(--line);text-align:left;white-space:nowrap}
.article-content th{background:#edf1ec;color:var(--ink);font-weight:800}
.article-end{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;border-top:1px solid var(--line);margin-top:42px;padding-top:25px}
.article-end p{margin:0;color:var(--muted);font-size:14px}
.article-aside{align-self:start;position:sticky;top:101px}
.side-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--white);padding:23px;box-shadow:0 5px 16px rgba(18,35,31,.03)}
.side-panel+.side-panel{margin-top:20px}
.side-panel h2{font-size:17px;line-height:1.4;margin:0 0 15px;color:var(--ink);font-weight:800}
.side-nav{display:grid;gap:2px}
.side-nav a{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid #e8eae5;color:#4d5b55;font-size:14px;font-weight:650}
.side-nav a:last-child{border-bottom:0}
.side-nav a:after{content:"→";color:var(--teal);transition:transform .2s}
.side-nav a:hover{color:var(--teal)}
.side-nav a:hover:after{transform:translateX(4px)}
.side-news{list-style:none;margin:0;padding:0}
.side-news li+li{border-top:1px solid #e8eae5}
.side-news a{display:block;padding:13px 0}
.side-news small{display:block;margin-bottom:4px;color:var(--teal);font-size:12px;font-weight:750}
.side-news strong{display:block;font-size:14px;line-height:1.55;color:var(--text)}
.side-news a:hover strong{color:var(--teal)}
.related{padding-top:44px}
.related-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:19px}
.related-head h2{font-size:27px;line-height:1.3;margin:0;color:var(--ink);font-weight:800}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-weight:750;font-size:14px;white-space:nowrap}
.text-link:hover{gap:12px;text-decoration:underline;text-underline-offset:4px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{display:flex;flex-direction:column;min-height:190px;padding:21px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);box-shadow:0 5px 16px rgba(18,35,31,.03);transition:.25s}
.related-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-hover)}
.tag{display:inline-flex;align-items:center;color:var(--teal);letter-spacing:.04em;font-size:12px;font-weight:800}
.related-card h3{font-size:17px;line-height:1.5;margin:10px 0;color:var(--ink);font-weight:800}
.related-card p{font-size:13px;color:var(--muted);margin:0 0 13px;line-height:1.7}
.card-bottom{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:8px;color:var(--muted);font-size:12px}
.card-bottom a{font-size:13px;color:var(--teal);font-weight:800}
.card-bottom a:hover{text-decoration:underline;text-underline-offset:4px}
.empty-state{text-align:center;padding:42px 20px;background:var(--white);border:1px dashed #b6c2bc;border-radius:var(--radius)}
.empty-icon{width:54px;height:54px;display:grid;place-items:center;margin:0 auto 15px;border-radius:16px;background:var(--soft);color:var(--teal);font-size:25px}
.empty-state h2{font-size:23px;color:var(--ink);margin:0 0 8px}
.empty-state p{color:var(--muted);margin:0 0 18px}
.download-strip{background:var(--ink);position:relative;overflow:hidden;color:#fff;padding:48px 0}
.download-strip:after{content:"";position:absolute;width:330px;height:330px;border:1px solid rgba(126,211,196,.16);border-radius:50%;right:4%;top:-225px}
.download-strip-inner{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:28px}
.download-strip h2{margin:0 0 8px;font-size:28px;line-height:1.35;font-weight:800}
.download-strip p{margin:0;color:#c9d9d3;max-width:650px}
.download-strip .btn-outline{border-color:#8dcfc1;color:#d8f5ed}
.download-strip .btn-outline:hover{background:rgba(255,255,255,.1);color:#fff}
.site-footer{background:var(--ink);color:#d5e0db;border-top:2px solid var(--teal);padding:58px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:38px}
.footer-brand p{max-width:290px;margin:17px 0 0;color:#b7c9c2;font-size:14px;line-height:1.75}
.footer-title{font-size:14px;color:#fff;margin:4px 0 15px;font-weight:800}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:14px;color:#bfd0c9;width:max-content;max-width:100%}
.footer-links a:hover{color:#91d7c9;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:44px;padding-top:20px;border-top:1px solid rgba(217,244,237,.15);font-size:13px;color:#a9beb6}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
@media(max-width:1100px){
  .nav{gap:15px}.nav a{font-size:13px}
  .article-layout{gap:32px;grid-template-columns:minmax(0,1fr) 270px}
}
@media(max-width:900px){
  .header-inner{height:68px}.nav{display:none}.menu-toggle{display:inline-grid;place-items:center}
  .site-header.menu-open .nav{display:grid;position:absolute;top:68px;left:0;right:0;padding:10px 24px 18px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .site-header.menu-open .nav a{padding:11px 10px;border-left:3px solid transparent}
  .site-header.menu-open .nav a:after{display:none}.site-header.menu-open .nav a.active{border-left-color:var(--teal);background:#eef5f1}
  .article-layout{grid-template-columns:1fr}.article-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .side-panel+.side-panel{margin-top:0}.related-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .footer-grid>div:last-child{grid-column:2/4}
}
@media(max-width:680px){
  body{font-size:15px}.container{width:min(calc(100% - 32px),var(--container))}
  .header-actions .btn{display:none}.article-banner{padding:38px 0 34px}
  .article-banner h1{font-size:30px}.breadcrumb .current{max-width:200px}
  .page-section{padding:38px 0 62px}.article-sheet{padding:25px 20px;border-radius:14px}
  .article-summary{font-size:16px;padding:15px 16px}.article-content{font-size:16px;line-height:1.85}
  .article-content h2{font-size:25px;margin-top:40px}.article-content h3{font-size:19px}
  .article-aside{display:block}.side-panel+.side-panel{margin-top:16px}
  .related{padding-top:36px}.related-grid{grid-template-columns:1fr;gap:14px}.related-card{min-height:160px}
  .download-strip{padding:38px 0}.download-strip-inner{display:block}.download-strip h2{font-size:24px}
  .download-strip .btn{width:100%;margin-top:19px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px 22px}
  .footer-brand{grid-column:1/-1}.footer-grid>div:last-child{grid-column:auto}.footer-bottom{margin-top:34px}
}
@media(max-width:420px){
  .brand{font-size:16px}.brand-mark{width:29px;height:29px}.header-inner{gap:10px}
  .article-meta{gap:7px 14px}.article-banner h1{font-size:28px}.article-end .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
}

/* roulang page: category1 */
:root{
      --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
      --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
      --soft:#e8f0eb;--radius:12px;--radius-lg:20px;
      --shadow:0 12px 30px rgba(18,35,31,.07);
      --shadow-hover:0 18px 36px rgba(18,35,31,.13);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,border-color .2s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,221,215,.9)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap;font-size:18px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);position:relative;overflow:hidden;flex:none}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}
    .brand-mark:before{width:19px;height:19px;left:5px;top:5px}
    .brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
    .nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
    .nav a{font-size:14px;font-weight:650;color:#43524c;position:relative;padding:26px 0}
    .nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--teal)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.2;transition:.2s}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px)}
    .btn-outline{color:var(--teal);border-color:var(--teal);background:transparent}
    .btn-outline:hover{background:#e7f2ef}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
    .page-banner{background:var(--ink);color:#fff;padding:72px 0 76px;position:relative;overflow:hidden}
    .page-banner:before{content:"";position:absolute;width:460px;height:460px;border:1px solid rgba(126,211,196,.2);border-radius:50%;right:-130px;top:-250px}
    .page-banner:after{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(230,110,75,.3);border-radius:50%;left:58%;bottom:-125px}
    .banner-inner{position:relative;z-index:1;max-width:850px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:#9fdbcf;font-size:12px;letter-spacing:.08em;font-weight:800}
    .eyebrow:before{content:"";width:7px;height:7px;background:var(--coral);border-radius:50%}
    h1{font-size:clamp(32px,4.2vw,48px);line-height:1.2;letter-spacing:-.03em;margin:18px 0 18px;font-weight:800}
    .banner-inner p{color:#d0dbd6;font-size:17px;max-width:760px;margin:0}
    .crumbs{padding:22px 0 0;font-size:13px;color:var(--muted)}
    .crumbs a{color:var(--teal)}
    .crumbs a:hover{text-decoration:underline;text-underline-offset:4px}
    .main-section{padding:70px 0 96px}
    .intro-grid{display:grid;grid-template-columns:1fr 1.45fr;gap:64px;align-items:start}
    .section-kicker{color:var(--teal);font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
    h2{font-size:clamp(26px,3vw,34px);line-height:1.3;letter-spacing:-.02em;margin:10px 0 14px}
    h3{font-size:19px;line-height:1.4;margin:0 0 9px}
    .intro-copy p{color:var(--muted);margin:0 0 22px}
    .intro-copy .btn{margin-top:10px}
    .content-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow)}
    .content-panel p{color:var(--muted);margin:0}
    .node-list{margin-top:28px;border-left:2px solid #b9d9d0;padding-left:25px}
    .node{position:relative;padding:0 0 30px}
    .node:last-child{padding-bottom:0}
    .node:before{content:"";position:absolute;width:11px;height:11px;border-radius:50%;background:var(--teal);left:-32px;top:8px;box-shadow:0 0 0 5px var(--soft)}
    .node-label{font-size:12px;color:var(--coral);font-weight:800;letter-spacing:.06em;margin-bottom:4px}
    .node p{font-size:14px;line-height:1.75}
    .visual-card{margin-top:26px;min-height:250px;border-radius:var(--radius-lg);background:#dceae3;position:relative;overflow:hidden;padding:24px}
    .visual-card:before{content:"";position:absolute;width:250px;height:250px;border:1px solid rgba(22,122,108,.3);border-radius:50%;right:-65px;top:-75px}
    .visual-card:after{content:"";position:absolute;width:150px;height:150px;border:1px solid rgba(230,110,75,.4);border-radius:50%;left:-40px;bottom:-70px}
    .screen{position:absolute;right:43px;bottom:-22px;width:150px;height:230px;border:7px solid var(--ink);border-bottom:0;border-radius:24px 24px 0 0;background:#fffdf8;padding:17px 13px;box-shadow:var(--shadow)}
    .screen-top{height:8px;width:45px;border-radius:8px;background:#c9d9d2;margin:0 auto 18px}
    .screen-block{height:62px;border-radius:10px;background:var(--teal);margin-bottom:12px}
    .screen-line{height:8px;border-radius:6px;background:#dce6e0;margin:9px 0}
    .screen-line.short{width:62%}
    .visual-copy{position:relative;z-index:2;width:58%;color:var(--ink)}
    .visual-copy strong{display:block;font-size:20px;line-height:1.4;margin-bottom:10px}
    .visual-copy span{font-size:14px;color:var(--muted)}
    .entry-section{padding:0 0 96px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
    .section-head p{color:var(--muted);margin:0;max-width:610px}
    .entry-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
    .entry-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:27px;min-height:190px;transition:.25s}
    .entry-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-hover)}
    .entry-card.large{grid-row:span 2;background:#e8f0eb;min-height:400px}
    .tag{display:inline-flex;color:var(--teal);font-size:12px;font-weight:800;letter-spacing:.04em}
    .tag.coral{color:#c55737}
    .entry-card h3{margin-top:12px}
    .entry-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 20px}
    .text-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:14px;font-weight:750}
    .text-link:hover{gap:12px;text-decoration:underline;text-underline-offset:4px}
    .guide-section{background:#eeece6;padding:82px 0}
    .guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .guide-item{padding:27px 24px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
    .guide-no{font-size:14px;color:var(--coral);font-weight:800;margin-bottom:18px}
    .guide-item h3{font-size:18px}
    .guide-item p{font-size:14px;color:var(--muted);margin:0}
    .faq-section{padding:92px 0}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px}
    .faq-intro p{color:var(--muted);margin:0 0 24px}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line);padding:20px 0}
    summary{list-style:none;cursor:pointer;font-weight:750;display:flex;justify-content:space-between;gap:18px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";font-size:22px;color:var(--teal);line-height:1}
    details[open] summary{color:var(--teal)}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:13px 32px 0 0}
    .cta{background:var(--ink);color:#fff;padding:48px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0 0 8px;font-size:28px}
    .cta p{color:#cbd9d3;margin:0}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
    .cta .btn-outline{color:#d8f5ed;border-color:#8dcfc1}
    .site-footer{background:var(--ink);color:#dce8e2;border-top:2px solid var(--teal);padding:55px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:35px;padding-bottom:42px}
    .footer-brand p{color:#aebfb7;font-size:14px;line-height:1.7;max-width:280px;margin:15px 0 0}
    .footer-title{color:#fff;font-size:15px;margin:3px 0 15px}
    .footer-links{display:flex;flex-direction:column;gap:8px;color:#aebfb7;font-size:14px}
    .footer-links a:hover,.footer-bottom a:hover{color:#8ed6c9}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#9eb0a8;font-size:13px}
    :focus-visible{outline:3px solid rgba(22,122,108,.3);outline-offset:3px}
    @media(max-width:1024px){
      .nav{gap:14px}.nav a{font-size:13px}
      .intro-grid,.faq-grid{gap:35px}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .header-inner{height:68px}.header-actions .btn{display:none}.menu-toggle{display:block}
      .nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:var(--white);border:1px solid var(--line);border-radius:0 0 12px 12px;padding:8px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
      .nav.open{display:flex}.nav a{padding:12px 10px;border-bottom:1px solid #edf0ec}.nav a:last-child{border:0}.nav a:after{left:0;right:auto;bottom:12px;width:3px;height:20px;transform:scaleY(0)}.nav a:hover:after,.nav a.active:after{transform:scaleY(1)}
      .page-banner{padding:52px 0 58px}.banner-inner p{font-size:16px}
      .main-section,.entry-section,.faq-section{padding:58px 0}.intro-grid,.entry-grid,.faq-grid{grid-template-columns:1fr}
      .entry-card.large{grid-row:auto;min-height:250px}.guide-section{padding:58px 0}.guide-grid{grid-template-columns:1fr}
      .section-head{display:block}.section-head .text-link{margin-top:14px}
      .cta-inner{display:block}.cta-actions{margin-top:22px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      h1{font-size:30px}.content-panel{padding:22px}.visual-card{min-height:225px}.screen{right:18px;width:130px}
      .visual-copy{width:62%}.visual-copy strong{font-size:17px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}
      .cta .btn{width:100%}.cta-actions{display:grid}
    }

/* roulang page: category2 */
:root{
      --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
      --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
      --soft:#e8f0eb;--radius:12px;--radius-lg:20px;--shadow:0 12px 30px rgba(18,35,31,.07);
      --shadow-hover:0 18px 36px rgba(18,35,31,.13);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,border-color .2s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,221,215,.9)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap;font-size:18px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);position:relative;overflow:hidden;flex:none}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}
    .brand-mark:before{width:19px;height:19px;left:5px;top:5px}
    .brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
    .nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
    .nav a{font-size:14px;font-weight:650;color:#43524c;position:relative;padding:26px 0;white-space:nowrap}
    .nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--teal)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.2;transition:.2s}
    .btn:focus-visible,.menu-toggle:focus-visible,.faq-btn:focus-visible{outline:3px solid rgba(22,122,108,.25);outline-offset:3px}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark);color:#fff;transform:translateY(-1px)}
    .btn-outline{color:var(--teal);border-color:var(--teal);background:transparent}
    .btn-outline:hover{background:#e7f2ef;color:var(--teal-dark)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
    .page-banner{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:72px 0 78px}
    .page-banner:before{content:"";position:absolute;width:470px;height:470px;border:1px solid rgba(126,211,196,.18);border-radius:50%;right:-70px;top:-300px}
    .page-banner:after{content:"";position:absolute;width:220px;height:220px;border:1px solid rgba(230,110,75,.32);border-radius:50%;left:58%;bottom:-158px}
    .crumb{position:relative;z-index:1;display:flex;gap:9px;align-items:center;color:#b9cdc6;font-size:13px;margin-bottom:17px}
    .crumb a{color:#9fdbcf}.crumb a:hover{text-decoration:underline;text-underline-offset:4px}
    h1,h2,h3,p{margin-top:0}
    h1{position:relative;z-index:1;font-size:44px;line-height:1.2;letter-spacing:-.035em;margin-bottom:17px;font-weight:800}
    .banner-copy{position:relative;z-index:1;max-width:740px;color:#d3e0da;font-size:17px;margin:0}
    .section{padding:88px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:34px}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.06em;font-weight:800}
    .eyebrow{color:var(--teal);margin-bottom:10px}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
    h2{font-size:30px;line-height:1.28;letter-spacing:-.025em;margin-bottom:0;font-weight:800}
    .section-intro{max-width:570px;color:var(--muted);margin:12px 0 0}
    .text-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-weight:750;font-size:14px;white-space:nowrap}
    .text-link:hover{gap:12px;color:var(--teal-dark);text-decoration:underline;text-underline-offset:4px}
    .zone-intro{display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;align-items:center}
    .intro-copy{padding:8px 0}
    .intro-copy p{color:var(--muted);margin:18px 0 26px}
    .topic-list{display:grid;gap:0;border-top:1px solid var(--line)}
    .topic-item{display:flex;align-items:center;gap:16px;padding:17px 0;border-bottom:1px solid var(--line)}
    .topic-index{color:var(--teal);font-weight:800;font-size:14px;width:29px}
    .topic-item strong{font-size:15px}.topic-item span{margin-left:auto;color:var(--muted);font-size:13px}
    .visual-board{min-height:420px;padding:28px;border-radius:var(--radius-lg);background:#dfe9e4;position:relative;overflow:hidden}
    .visual-board:before{content:"";position:absolute;width:260px;height:260px;border-radius:50%;border:1px solid rgba(22,122,108,.25);right:-95px;top:-95px}
    .screen-main{height:268px;border-radius:16px;background:linear-gradient(145deg,#16352e,#246c5d);padding:22px;box-shadow:0 18px 34px rgba(18,35,31,.17);position:relative;overflow:hidden}
    .screen-main:after{content:"";position:absolute;width:150px;height:150px;border-radius:50%;background:rgba(230,110,75,.85);right:-45px;bottom:-63px}
    .screen-label{font-size:12px;letter-spacing:.08em;color:#a9ddd2;font-weight:800;position:relative;z-index:1}
    .screen-title{color:#fff;font-size:26px;line-height:1.25;font-weight:800;max-width:265px;margin-top:42px;position:relative;z-index:1}
    .screen-bars{display:flex;gap:8px;position:absolute;left:22px;right:22px;bottom:22px;z-index:1}
    .screen-bars i{display:block;height:8px;background:rgba(255,255,255,.25);border-radius:5px;flex:1}.screen-bars i:first-child{flex:1.6;background:#78cdbd}
    .screen-float{position:absolute;right:18px;bottom:22px;width:195px;padding:16px;border:1px solid rgba(255,255,255,.72);border-radius:14px;background:rgba(255,253,248,.96);box-shadow:var(--shadow)}
    .screen-float b{display:block;font-size:14px}.screen-float span{display:block;margin-top:4px;font-size:12px;line-height:1.5;color:var(--muted)}
    .tabs-area{background:#eeece6;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .zone-tabs{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:30px}
    .zone-tab{border:1px solid var(--line);background:var(--white);border-radius:999px;padding:9px 15px;color:#52625c;font-size:14px;font-weight:700}
    .zone-tab.active,.zone-tab:hover{background:var(--teal);border-color:var(--teal);color:#fff}
    .experience-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;gap:22px}
    .experience-card{border:1px solid var(--line);background:var(--white);border-radius:var(--radius-lg);padding:25px;min-height:260px;position:relative;overflow:hidden;transition:.25s}
    .experience-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-hover)}
    .experience-card.featured{background:var(--ink);color:#fff}
    .experience-card.featured p{color:#c6d8d1}.experience-card p{font-size:14px;color:var(--muted);margin:12px 0 20px}
    .experience-card h3{font-size:21px;line-height:1.4;margin:10px 0 0;font-weight:800}
    .tag{color:var(--teal)}.featured .tag{color:#9fdbcf}.tag.coral{color:#c55737}
    .card-shape{position:absolute;right:-20px;bottom:-34px;width:145px;height:145px;border:1px solid rgba(22,122,108,.25);border-radius:50%}
    .featured .card-shape{border-color:rgba(126,211,196,.27);width:185px;height:185px}
    .content-route{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
    .route-item{background:var(--white);padding:30px 28px;min-height:220px}
    .route-num{color:var(--coral);font-weight:800;font-size:14px}.route-item h3{font-size:19px;margin:15px 0 8px;font-weight:800}.route-item p{font-size:14px;color:var(--muted);margin-bottom:15px}
    .download-strip{padding:0 0 88px}
    .download-panel{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:42px 48px;display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;overflow:hidden;position:relative}
    .download-panel:after{content:"";position:absolute;width:320px;height:320px;border:1px solid rgba(126,211,196,.17);border-radius:50%;right:-110px;bottom:-170px}
    .download-panel h2{font-size:29px}.download-panel p{max-width:610px;color:#c6d8d1;margin:12px 0 22px}
    .download-panel .btn-outline{color:#d8f5ed;border-color:#8dcfc1}.download-panel .btn-outline:hover{background:rgba(255,255,255,.1)}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap}.download-actions .btn{min-width:142px}
    .download-note{position:relative;z-index:1;display:flex;align-items:center;gap:14px;padding:14px;background:var(--white);color:var(--text);border-radius:14px;min-width:236px}
    .qr{width:62px;height:62px;flex:none;background:repeating-linear-gradient(90deg,#12231f 0 5px,#fff 5px 9px),repeating-linear-gradient(#12231f 0 5px,#fff 5px 9px);border:5px solid #fff;outline:1px solid var(--line)}
    .download-note b{font-size:14px;display:block}.download-note span{font-size:12px;color:var(--muted);display:block;line-height:1.55}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:72px}
    .faq-copy p{color:var(--muted);margin:15px 0 24px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-btn{border:0;background:transparent;width:100%;display:flex;justify-content:space-between;gap:20px;text-align:left;padding:20px 0;color:var(--text);font-weight:800;font-size:16px}
    .faq-icon{color:var(--teal);font-size:22px;line-height:1}.faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 34px 20px 0}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-btn{color:var(--teal)}
    .cta{background:#e0ebe5;padding:54px 0;border-top:1px solid #cfddd6}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:29px}.cta p{color:var(--muted);margin:10px 0 0}
    .site-footer{background:var(--ink);color:#d0ddd7;border-top:2px solid var(--teal);padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}.footer-brand p{font-size:14px;line-height:1.7;max-width:300px;color:#b7c9c1;margin:15px 0 0}
    .footer-title{font-size:14px;color:#fff;font-weight:800;margin:5px 0 14px}.footer-links{display:grid;gap:9px}.footer-links a{font-size:14px;color:#b7c9c1}.footer-links a:hover{color:#9fdbcf;text-decoration:underline;text-underline-offset:4px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:20px;display:flex;justify-content:space-between;gap:18px;font-size:13px;color:#aebfb8}.footer-bottom a:hover{color:#fff}
    @media(max-width:1100px){.nav{gap:14px}.nav a{font-size:13px}.experience-grid{grid-template-columns:1fr 1fr}.experience-card.featured{grid-column:1/-1}.zone-intro{gap:30px}}
    @media(max-width:820px){.header-inner{height:68px}.nav{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 24px 20px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);align-items:stretch;flex-direction:column;gap:0}.nav.open{display:flex}.nav a{padding:13px 0;border-bottom:1px solid #edf0eb}.nav a:after{left:-10px;right:auto;top:12px;bottom:12px;width:3px;height:auto}.menu-toggle{display:inline-flex;align-items:center;justify-content:center}.header-actions .btn{display:none}h1{font-size:35px}.page-banner{padding:56px 0 60px}.section{padding:64px 0}.zone-intro,.faq-layout{grid-template-columns:1fr;gap:34px}.visual-board{min-height:350px}.content-route{grid-template-columns:1fr}.download-panel{grid-template-columns:1fr;padding:34px}.download-note{width:max-content}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
    @media(max-width:520px){.container{width:min(calc(100% - 32px),var(--container))}.brand{font-size:16px}.brand-mark{width:29px;height:29px}.page-banner{padding:45px 0 50px}h1{font-size:30px}.banner-copy{font-size:15px}.section{padding:48px 0}.section-head{display:block;margin-bottom:26px}h2{font-size:26px}.section-intro{font-size:15px}.visual-board{padding:18px;min-height:322px}.screen-main{height:235px}.screen-title{font-size:22px;margin-top:34px}.screen-float{right:10px;bottom:16px;width:174px;padding:12px}.experience-grid{grid-template-columns:1fr}.experience-card.featured{grid-column:auto}.route-item{padding:25px 22px}.download-panel{padding:29px 22px}.download-panel h2,.cta h2{font-size:25px}.download-actions,.cta-box{flex-direction:column;align-items:stretch}.download-actions .btn{width:100%}.download-note{min-width:0;width:100%}.faq-layout{gap:26px}.cta{padding:40px 0}.cta-box .btn{width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span+span{display:block;margin-top:8px}}

/* roulang page: category3 */
:root{
  --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
  --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
  --soft:#e8f0eb;--radius:12px;--radius-lg:20px;--shadow:0 12px 30px rgba(18,35,31,.07);
  --shadow-hover:0 18px 36px rgba(18,35,31,.13);--container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,border-color .2s ease}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,221,215,.85)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap;font-size:18px}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);position:relative;overflow:hidden;flex:0 0 32px}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}
.brand-mark:before{width:19px;height:19px;left:5px;top:5px}
.brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
.nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
.nav a{font-size:14px;font-weight:650;color:#43524c;position:relative;padding:26px 0;white-space:nowrap}
.nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}
.nav a:hover,.nav a.active{color:var(--teal)}
.nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.25;transition:.2s}
.btn:focus-visible,.menu-toggle:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(22,122,108,.25);outline-offset:3px}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px);color:#fff}
.btn-outline{color:var(--teal);border-color:var(--teal);background:transparent}
.btn-outline:hover{background:#e7f2ef;color:var(--teal-dark)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
.page-banner{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:66px 0 70px}
.page-banner:before{content:"";position:absolute;width:380px;height:380px;border-radius:50%;border:1px solid rgba(126,211,196,.22);right:-70px;top:-210px}
.page-banner:after{content:"";position:absolute;width:160px;height:160px;border-radius:50%;border:1px solid rgba(230,110,75,.4);left:58%;bottom:-110px}
.breadcrumb{position:relative;z-index:1;display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-bottom:20px;font-size:13px;color:#aabcb5}
.breadcrumb a{color:#a6e2d6}
.breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px}
.page-banner h1{position:relative;z-index:1;margin:0;max-width:800px;font-size:42px;line-height:1.2;letter-spacing:-.03em;font-weight:800}
.page-banner p{position:relative;z-index:1;max-width:700px;margin:18px 0 0;color:#d1ded8;font-size:17px}
.section{padding:88px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px}
.section-head h2{margin:0;font-size:30px;line-height:1.3;letter-spacing:-.02em}
.section-head p{max-width:580px;margin:10px 0 0;color:var(--muted)}
.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.06em;font-weight:800}
.eyebrow{color:var(--teal)}
.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
.tag{color:var(--teal);letter-spacing:.04em}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-weight:750;font-size:14px}
.text-link:hover{gap:12px;text-decoration:underline;text-underline-offset:4px;color:var(--teal-dark)}
.download-stage{margin-top:-28px;position:relative;z-index:2;background:var(--ink);color:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 20px 50px rgba(18,35,31,.16)}
.download-stage:before{content:"";position:absolute;width:500px;height:500px;border:1px solid rgba(126,211,196,.16);border-radius:50%;left:-230px;bottom:-380px}
.download-stage-grid{display:grid;grid-template-columns:1fr .92fr;gap:54px;align-items:center;padding:54px 58px}
.download-stage h2{margin:12px 0 14px;font-size:31px;line-height:1.28}
.download-stage p{margin:0;color:#cbd9d3;max-width:570px}
.download-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:27px}
.download-actions .btn{min-width:154px}
.download-actions .btn-outline{color:#ddf6ef;border-color:#86cabb}
.download-actions .btn-outline:hover{background:rgba(255,255,255,.1);color:#fff}
.download-note{display:flex;gap:9px;align-items:flex-start;margin-top:20px;font-size:13px;color:#a8beb6}
.download-note i{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--coral);margin-top:7px;flex:0 0 9px}
.download-display{min-height:330px;position:relative;display:flex;align-items:center;justify-content:flex-end}
.device{width:207px;height:350px;padding:11px;border:7px solid #0a1512;border-radius:31px;background:#25483f;box-shadow:18px 18px 0 rgba(0,0,0,.13),0 20px 40px rgba(0,0,0,.23);position:relative;z-index:2}
.device:before{content:"";position:absolute;width:80px;height:16px;background:#0a1512;border-radius:0 0 11px 11px;left:50%;top:0;transform:translateX(-50%);z-index:3}
.device-screen{height:100%;overflow:hidden;border-radius:20px;background:#eaf2ed;color:var(--ink);padding:25px 14px 14px}
.screen-brand{font-size:11px;font-weight:800;color:var(--teal)}
.screen-title{font-size:19px;font-weight:800;margin:20px 0 12px;line-height:1.25}
.screen-card{height:87px;border-radius:12px;background:linear-gradient(135deg,#176b5e,#54a998);position:relative;overflow:hidden}
.screen-card:before{content:"";position:absolute;width:91px;height:91px;border:1px solid rgba(255,255,255,.55);border-radius:50%;right:-24px;top:-24px}
.screen-card:after{content:"";position:absolute;width:28px;height:28px;border-radius:50%;background:var(--coral);left:17px;bottom:16px}
.screen-line{height:8px;border-radius:9px;background:#c8d8d0;margin-top:12px}
.screen-line.short{width:63%}
.qr-card{position:absolute;left:6%;bottom:10px;width:154px;padding:14px;background:var(--white);border-radius:14px;color:var(--text);text-align:center;box-shadow:var(--shadow);z-index:3}
.qr-pattern{width:88px;height:88px;margin:0 auto 9px;background-color:#fff;background-image:linear-gradient(90deg,#12231f 10%,transparent 10%,transparent 30%,#12231f 30%,#12231f 40%,transparent 40%,transparent 60%,#12231f 60%,#12231f 70%,transparent 70%),linear-gradient(#12231f 10%,transparent 10%,transparent 30%,#12231f 30%,#12231f 40%,transparent 40%,transparent 60%,#12231f 60%,#12231f 70%,transparent 70%);background-size:20px 20px;border:7px solid #fff;outline:1px solid var(--line)}
.qr-card strong{display:block;font-size:12px}
.qr-card span{display:block;font-size:11px;color:var(--muted);margin-top:2px}
.steps-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:70px;align-items:start}
.steps-intro{position:sticky;top:105px}
.steps-intro h2{font-size:31px;line-height:1.32;margin:12px 0}
.steps-intro p{color:var(--muted);margin:0 0 22px}
.steps{border-left:1px solid var(--line);padding-left:34px}
.step{position:relative;padding:0 0 37px}
.step:last-child{padding-bottom:0}
.step-number{position:absolute;left:-54px;top:0;width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--teal);color:#fff;font-weight:800;font-size:13px;border:5px solid var(--paper)}
.step h3{font-size:20px;line-height:1.4;margin:0 0 8px}
.step p{margin:0;color:var(--muted);max-width:640px}
.step small{display:block;margin-top:10px;color:#58746c;font-weight:700}
.compatibility{background:#eceae4;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.compat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.compat-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.22s}
.compat-card:hover{border-color:var(--teal);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.icon-box{width:44px;height:44px;display:grid;place-items:center;background:var(--soft);color:var(--teal);border-radius:11px;font-size:21px;margin-bottom:17px}
.compat-card h3{font-size:19px;margin:0 0 8px}
.compat-card p{font-size:14px;color:var(--muted);margin:0}
.faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px}
.faq-layout h2{font-size:31px;line-height:1.32;margin:12px 0}
.faq-layout p{color:var(--muted);margin:0 0 24px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{appearance:none;background:transparent;border:0;width:100%;padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:18px;color:var(--text);text-align:left;font-weight:800;font-size:17px}
.faq-symbol{width:26px;height:26px;display:grid;place-items:center;color:var(--teal);font-size:23px;font-weight:400;flex:0 0 26px}
.faq-answer{display:none;padding:0 28px 21px 18px;border-left:3px solid var(--teal);margin:0 0 20px;color:var(--muted);font-size:15px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-symbol:before{content:"−"}
.faq-item:not(.open) .faq-symbol:before{content:"+"}
.faq-symbol{font-size:0}
.cta-strip{padding:0 0 88px}
.cta-panel{position:relative;overflow:hidden;background:var(--ink);border-radius:var(--radius-lg);padding:42px 50px;display:flex;justify-content:space-between;align-items:center;gap:28px;color:#fff}
.cta-panel:after{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(126,211,196,.2);border-radius:50%;right:-58px;top:-96px}
.cta-panel h2{font-size:28px;margin:0 0 7px;line-height:1.3}
.cta-panel p{margin:0;color:#c7d7d0}
.cta-panel .btn{position:relative;z-index:1;min-width:145px}
.site-footer{background:var(--ink);color:#d7e1dc;border-top:3px solid var(--teal);padding:61px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer-brand p{max-width:300px;margin:17px 0 0;color:#aebfb8;font-size:14px;line-height:1.75}
.footer-title{font-size:14px;color:#fff;margin:4px 0 15px;font-weight:800}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:14px;color:#b9c9c3}
.footer-links a:hover{color:#91daca;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{margin-top:47px;padding-top:20px;border-top:1px solid rgba(255,255,255,.13);display:flex;justify-content:space-between;gap:18px;color:#99aea5;font-size:13px}
.footer-bottom a:hover{color:#fff}
@media(max-width:1120px){
  .nav{gap:14px}.nav a{font-size:13px}
  .download-stage-grid{padding:45px}
  .steps-layout,.faq-layout{gap:45px}
}
@media(max-width:900px){
  .header-inner{height:68px}.nav{display:none}.header-actions .btn{display:none}.menu-toggle{display:block}
  .mobile-nav{display:none;background:var(--white);border-top:1px solid var(--line);padding:10px 24px 18px}
  .mobile-nav.open{display:grid}
  .mobile-nav a{padding:11px 12px;border-left:3px solid transparent;font-weight:700;color:#43524c}
  .mobile-nav a.active{color:var(--teal);border-left-color:var(--teal);background:var(--soft)}
  .page-banner{padding:52px 0 56px}.page-banner h1{font-size:36px}
  .download-stage-grid{grid-template-columns:1fr;padding:42px}.download-display{justify-content:center;min-height:320px}
  .qr-card{left:16%}.steps-layout,.faq-layout{grid-template-columns:1fr}.steps-intro{position:static}
  .compat-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .footer-grid>div:last-child{grid-column:2/4}
}
@media(min-width:901px){.mobile-nav{display:none!important}}
@media(max-width:640px){
  body{font-size:15px}.container{width:min(calc(100% - 32px),var(--container))}
  .brand{font-size:16px}.brand-mark{width:30px;height:30px}.page-banner{padding:43px 0 47px}
  .page-banner h1{font-size:29px}.page-banner p{font-size:15px;margin-top:14px}
  .section{padding:52px 0}.section-head{display:block;margin-bottom:25px}.section-head h2,.steps-intro h2,.faq-layout h2{font-size:26px}
  .download-stage{margin-top:-20px;border-radius:15px}.download-stage-grid{padding:30px 22px;gap:28px}.download-stage h2{font-size:25px}
  .download-actions{flex-direction:column}.download-actions .btn{width:100%}.download-display{min-height:295px;justify-content:flex-end}
  .device{width:174px;height:295px;border-radius:27px}.device-screen{padding:22px 12px 12px}.screen-title{font-size:17px}
  .qr-card{left:0;bottom:3px;width:132px;padding:11px}.qr-pattern{width:72px;height:72px;background-size:16px 16px}
  .steps{padding-left:27px}.step-number{left:-47px}.compat-grid{grid-template-columns:1fr;gap:14px}.compat-card{padding:21px}
  .faq-layout{gap:28px}.faq-question{font-size:16px;padding:17px 0}.faq-answer{font-size:14px;padding-right:10px}
  .cta-strip{padding-bottom:52px}.cta-panel{padding:29px 24px;display:block}.cta-panel h2{font-size:24px}.cta-panel .btn{margin-top:20px;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:31px 21px}.footer-brand{grid-column:1/-1}.footer-grid>div:last-child{grid-column:auto}.footer-bottom{display:block;margin-top:35px}.footer-bottom span+span{display:block;margin-top:8px}
}

/* roulang page: category5 */
:root{
      --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
      --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
      --soft:#e8f0eb;--radius:12px;--radius-lg:20px;--shadow:0 12px 30px rgba(18,35,31,.07);
      --shadow-hover:0 18px 36px rgba(18,35,31,.13);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,border-color .2s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(22,122,108,.28);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,221,215,.9)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap;font-size:18px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);position:relative;overflow:hidden;flex:none}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}
    .brand-mark:before{width:19px;height:19px;left:5px;top:5px}
    .brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
    .nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
    .nav a{font-size:14px;font-weight:650;color:#43524c;position:relative;padding:26px 0;white-space:nowrap}
    .nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--teal)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.2;transition:.2s}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px);color:#fff}
    .btn-outline{color:var(--teal);border-color:var(--teal);background:transparent}
    .btn-outline:hover{background:#e7f2ef;color:var(--teal-dark)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
    .page-hero{position:relative;overflow:hidden;background:var(--white);border-bottom:1px solid var(--line);padding:68px 0 62px}
    .page-hero:before{content:"";position:absolute;width:460px;height:460px;border:1px solid #b9d7cf;border-radius:50%;right:-135px;top:-290px}
    .page-hero:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:rgba(230,110,75,.1);right:20%;bottom:-115px}
    .breadcrumb{position:relative;z-index:1;display:flex;gap:9px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:22px}
    .breadcrumb a{color:var(--teal);font-weight:700}
    .breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px}
    .breadcrumb span{color:#93a099}
    .hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 315px;align-items:end;gap:60px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:12px;letter-spacing:.08em;font-weight:800}
    .eyebrow:before{content:"";width:7px;height:7px;background:var(--coral);border-radius:50%}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:44px;line-height:1.2;letter-spacing:-.035em;margin:14px 0 18px;font-weight:800}
    h2{font-size:30px;line-height:1.3;letter-spacing:-.025em;font-weight:800;margin-bottom:14px}
    h3{font-size:19px;line-height:1.45;font-weight:800}
    .hero-copy p{max-width:670px;color:var(--muted);font-size:17px;line-height:1.85;margin:0}
    .shield-display{height:218px;border:1px solid #c4d9d2;background:#eaf2ee;border-radius:var(--radius-lg);position:relative;overflow:hidden}
    .shield-display:before{content:"";position:absolute;width:235px;height:235px;border:1px solid rgba(22,122,108,.27);border-radius:50%;right:-55px;top:-68px}
    .shield-display:after{content:"";position:absolute;width:88px;height:88px;border:2px solid var(--coral);border-radius:50%;left:35px;bottom:-34px}
    .shield-icon{position:absolute;right:91px;top:46px;width:88px;height:104px;background:var(--ink);clip-path:polygon(50% 0,91% 15%,88% 61%,50% 100%,12% 61%,9% 15%);display:grid;place-items:center;box-shadow:0 14px 24px rgba(18,35,31,.18)}
    .shield-icon svg{width:39px;height:39px;stroke:#91dbce;fill:none;stroke-width:2.5}
    .section{padding:92px 0}
    .section-head{max-width:710px;margin-bottom:36px}
    .section-head p{color:var(--muted);margin-bottom:0}
    .security-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .security-card{padding:28px 26px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--white);box-shadow:0 5px 16px rgba(18,35,31,.025);transition:.25s}
    .security-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-hover)}
    .line-icon{width:48px;height:48px;border-radius:12px;background:var(--soft);display:grid;place-items:center;margin-bottom:22px}
    .line-icon svg{width:25px;height:25px;stroke:var(--teal);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
    .security-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.8}
    .verify-section{background:#eeece6;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .verify-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:74px;align-items:start}
    .verify-intro{position:sticky;top:108px}
    .verify-intro p{color:var(--muted);margin-bottom:24px}
    .check-list{display:grid;gap:14px}
    .check-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px 21px;display:grid;grid-template-columns:38px 1fr;gap:16px;transition:.2s}
    .check-item:hover{border-color:var(--teal);box-shadow:var(--shadow)}
    .check-no{width:32px;height:32px;border-radius:50%;background:var(--ink);color:#a3e1d5;display:grid;place-items:center;font-size:12px;font-weight:800}
    .check-item h3{font-size:17px;margin:0 0 5px}
    .check-item p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}
    .privacy-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch}
    .privacy-note{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:42px;position:relative;overflow:hidden}
    .privacy-note:after{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(126,211,196,.22);border-radius:50%;right:-105px;bottom:-118px}
    .privacy-note .eyebrow{color:#a3e1d5}
    .privacy-note h2{margin-top:16px;position:relative;z-index:1}
    .privacy-note p{color:#d1ddd7;max-width:520px;position:relative;z-index:1;margin-bottom:0}
    .privacy-points{display:grid;gap:14px}
    .privacy-point{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
    .privacy-point strong{display:block;color:var(--ink);font-size:16px;margin-bottom:5px}
    .privacy-point span{color:var(--muted);font-size:14px;line-height:1.75}
    .report-panel{padding:0 0 92px}
    .report-box{background:#dfece6;border:1px solid #c6dbd2;border-radius:var(--radius-lg);padding:42px 46px;display:grid;grid-template-columns:1fr auto;gap:34px;align-items:center}
    .report-box h2{margin-bottom:9px}
    .report-box p{color:var(--muted);max-width:700px;margin:0}
    .faq-section{padding-top:0}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:72px}
    .faq-copy p{color:var(--muted);margin-bottom:22px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;padding:20px 4px;display:flex;justify-content:space-between;align-items:center;gap:18px;border:0;background:transparent;color:var(--ink);font-weight:800;text-align:left}
    .faq-question span:last-child{font-size:24px;line-height:1;color:var(--teal);font-weight:400}
    .faq-answer{display:none;padding:0 26px 20px 18px;border-left:3px solid var(--teal);margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.85}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question{color:var(--teal)}
    .cta-strip{background:var(--ink);position:relative;overflow:hidden;padding:58px 0}
    .cta-strip:before{content:"";position:absolute;width:460px;height:460px;border:1px solid rgba(126,211,196,.18);border-radius:50%;left:-230px;top:-260px}
    .cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-inner h2{color:#fff;margin:0 0 8px}
    .cta-inner p{color:#cbd8d3;margin:0}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
    .cta-strip .btn-outline{color:#d9f4ed;border-color:#8bcabe}
    .cta-strip .btn-outline:hover{background:rgba(255,255,255,.09);color:#fff}
    .site-footer{background:var(--ink);border-top:2px solid var(--teal);color:#d2ddd8;padding:64px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:45px}
    .footer-brand p{font-size:14px;line-height:1.8;max-width:280px;margin:16px 0 0;color:#b9c8c1}
    .footer-title{color:#fff;font-size:15px;margin:4px 0 16px}
    .footer-links{display:grid;gap:10px}
    .footer-links a{font-size:14px;color:#becbc5}
    .footer-links a:hover{color:#a3e1d5;text-decoration:underline;text-underline-offset:4px}
    .footer-bottom{padding-top:20px;border-top:1px solid rgba(255,255,255,.13);display:flex;justify-content:space-between;gap:20px;color:#9faea7;font-size:13px}
    .footer-bottom a:hover{color:#fff}
    @media(max-width:1100px){
      .nav{gap:14px}.nav a{font-size:13px}.hero-layout{gap:35px}.verify-grid,.faq-grid{gap:42px}
    }
    @media(max-width:860px){
      .header-inner{height:68px}.nav{display:none}.menu-toggle{display:inline-grid;place-items:center}.header-actions .btn{display:none}
      .site-header.open .nav{position:absolute;display:flex;flex-direction:column;align-items:stretch;gap:0;left:0;right:0;top:68px;padding:8px 24px 18px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
      .site-header.open .nav a{padding:13px 0}.site-header.open .nav a:after{left:0;right:auto;top:11px;bottom:11px;width:3px;height:auto}.site-header.open .nav a.active:after{transform:scaleY(1)}
      .hero-layout,.verify-grid,.privacy-layout,.faq-grid{grid-template-columns:1fr}.shield-display{max-width:420px;width:100%;justify-self:start}.verify-intro{position:static}.security-grid{grid-template-columns:1fr 1fr}.report-box{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:560px){
      .container{width:min(calc(100% - 32px),var(--container))}.page-hero{padding:48px 0}.breadcrumb{margin-bottom:16px}h1{font-size:31px}h2{font-size:26px}.hero-copy p{font-size:16px}.shield-display{height:175px}.shield-icon{transform:scale(.82);right:56px;top:28px}
      .section{padding:58px 0}.security-grid{grid-template-columns:1fr;gap:14px}.security-card{padding:23px}.verify-grid,.faq-grid{gap:30px}.privacy-note{padding:30px}.report-panel{padding-bottom:58px}.report-box{padding:30px 24px}.cta-strip{padding:45px 0}.cta-inner{align-items:flex-start;flex-direction:column}.cta-actions,.cta-actions .btn{width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:30px 20px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}
    }

/* roulang page: category6 */
:root{
      --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
      --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
      --soft:#e8f0eb;--radius:12px;--radius-lg:20px;
      --shadow:0 12px 30px rgba(18,35,31,.07);--shadow-hover:0 18px 36px rgba(18,35,31,.13);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:.2s ease}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
    .header-inner{height:76px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink);white-space:nowrap}
    .brand-mark{position:relative;width:32px;height:32px;border-radius:9px;background:var(--ink);overflow:hidden}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}
    .brand-mark:before{width:19px;height:19px;left:5px;top:5px}
    .brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
    .nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
    .nav a{position:relative;padding:26px 0;color:#43524c;font-size:14px;font-weight:650}
    .nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--teal)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;gap:10px;align-items:center}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.2;transition:.2s}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark);color:#fff;transform:translateY(-1px)}
    .btn-outline{background:transparent;border-color:var(--teal);color:var(--teal)}
    .btn-outline:hover{background:#e7f2ef;color:var(--teal-dark)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
    .page-banner{position:relative;overflow:hidden;padding:78px 0 70px;background:var(--ink);color:#fff}
    .page-banner:after{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(126,211,196,.2);border-radius:50%;right:-110px;top:-230px}
    .banner-content{position:relative;z-index:1;max-width:760px}
    .breadcrumb{display:flex;gap:10px;align-items:center;color:#a6c7bd;font-size:13px;margin-bottom:24px}
    .breadcrumb a:hover{color:#fff;text-decoration:underline}
    .breadcrumb span{color:#6b8c82}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:#9fdbcf;font-size:12px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
    h1{font-size:clamp(32px,4vw,48px);line-height:1.2;letter-spacing:-.03em;margin:14px 0 18px;font-weight:800}
    .banner-content p{max-width:670px;margin:0;color:#d0dbd6;font-size:17px}
    .section{padding:84px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:32px}
    h2{font-size:30px;line-height:1.3;margin:0;letter-spacing:-.02em}
    h3{font-size:19px;line-height:1.4;margin:0 0 9px}
    .section-head p,.intro p{margin:10px 0 0;color:var(--muted)}
    .help-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:start}
    .intro{padding:28px 0}
    .intro-mark{width:64px;height:64px;border:1px solid #a8c9bf;border-radius:18px;display:grid;place-items:center;color:var(--teal);font-size:28px;margin-bottom:22px;background:var(--soft)}
    .intro h2{font-size:32px}
    .help-links{display:grid;gap:10px;margin-top:28px}
    .help-link{display:flex;align-items:center;justify-content:space-between;padding:15px 17px;border:1px solid var(--line);border-radius:10px;background:var(--white);font-weight:700}
    .help-link span:last-child{color:var(--teal);font-size:20px}
    .help-link:hover{border-color:var(--teal);transform:translateX(3px);box-shadow:var(--shadow)}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:var(--white);border:1px solid var(--line);border-radius:12px;overflow:hidden}
    .faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 22px;font-weight:750;cursor:pointer}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";color:var(--teal);font-size:23px;font-weight:400}
    .faq-item[open]{border-left:3px solid var(--teal)}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{padding:0 22px 21px;color:var(--muted);font-size:15px}
    .category-strip{background:#eeece6;padding:70px 0}
    .category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .category-card{padding:23px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);transition:.2s}
    .category-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-hover)}
    .category-card strong{display:block;color:var(--teal);font-size:13px;margin-bottom:12px}
    .category-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .feedback{padding-top:0}
    .feedback-box{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;padding:42px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)}
    .feedback-copy p{color:var(--muted);margin:12px 0 0}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .field{display:flex;flex-direction:column;gap:7px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700}
    label i{font-style:normal;color:var(--coral);margin-left:3px}
    input,textarea,select{width:100%;border:1px solid #bfcac4;border-radius:10px;background:#fbfaf6;color:var(--text);padding:11px 13px;outline:0}
    textarea{min-height:122px;resize:vertical}
    input:focus,textarea:focus,select:focus{border-color:var(--teal);box-shadow:0 0 0 4px rgba(22,122,108,.1)}
    .form-note{font-size:12px;color:var(--muted);margin-top:10px}
    .cta{padding:25px 0;background:var(--ink);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{font-size:25px}.cta p{color:#bfd1ca;margin:6px 0 0}
    .site-footer{background:var(--ink);color:#d6e2dd;border-top:1px solid var(--teal);padding:60px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand p{max-width:280px;color:#a9beb6;font-size:14px;line-height:1.7}
    .footer-title{font-size:15px;color:#fff;margin:5px 0 15px}
    .footer-links{display:grid;gap:9px;color:#abc0b8;font-size:14px}
    .footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.13);padding-top:18px;color:#9fb4ac;font-size:13px}
    .footer-bottom a:hover{color:#fff}
    .search-hint{display:flex;align-items:center;gap:10px;margin-top:26px;color:#a6cfc4;font-size:14px}
    .search-hint:before{content:"⌕";display:grid;place-items:center;width:30px;height:30px;border:1px solid #5c978a;border-radius:50%;font-size:20px}
    @media(max-width:1024px){.nav{gap:13px}.header-inner{gap:14px}.help-layout,.feedback-box{gap:28px}.category-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){
      .container{width:min(calc(100% - 34px),var(--container))}
      .header-inner{height:68px}.header-actions .btn{display:none}.menu-toggle{display:block}
      .nav{display:none;position:absolute;top:68px;left:0;right:0;padding:10px 17px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
      .nav.open{display:grid;gap:0}.nav a{padding:13px 12px;border-bottom:1px solid #edf0eb}.nav a:after{left:0;right:auto;bottom:0;width:3px;height:100%;transform:scaleY(0)}
      .nav a:hover:after,.nav a.active:after{transform:scaleY(1)}
      .page-banner{padding:55px 0 52px}.section{padding:58px 0}.section-head{display:block;margin-bottom:25px}
      .help-layout,.feedback-box{grid-template-columns:1fr}.intro{padding:0}
      .feedback-box{padding:25px 20px}.cta-inner{display:block}.cta .btn{margin-top:18px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      h1{font-size:31px}.banner-content p{font-size:15px}.category-grid,.form-grid{grid-template-columns:1fr}
      .field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}
      .faq-item summary{padding:17px}.faq-answer{padding:0 17px 18px}
    }

/* roulang page: category4 */
:root{
      --ink:#12231f;--text:#1d2623;--muted:#62706a;--paper:#f5f3ee;--white:#fffdf8;
      --line:#d9ddd7;--teal:#167a6c;--teal-dark:#105e53;--coral:#e66e4b;
      --soft:#e8f0eb;--radius:12px;--radius-lg:20px;--shadow:0 12px 30px rgba(18,35,31,.07);
      --shadow-hover:0 18px 36px rgba(18,35,31,.13);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,border-color .2s ease,background .2s ease}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(217,221,215,.9)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap;font-size:18px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);position:relative;overflow:hidden;flex:none}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;border:2px solid #7ed3c4;border-radius:50%}
    .brand-mark:before{width:19px;height:19px;left:5px;top:5px}
    .brand-mark:after{width:8px;height:8px;right:3px;bottom:3px;border-color:var(--coral)}
    .nav{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
    .nav a{font-size:14px;font-weight:650;color:#43524c;position:relative;padding:26px 0;white-space:nowrap}
    .nav a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--teal);transform:scaleX(0);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--teal)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.2;transition:.2s}
    .btn:focus-visible,.nav a:focus-visible,.text-link:focus-visible,.menu-toggle:focus-visible{outline:3px solid rgba(22,122,108,.25);outline-offset:3px}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark);color:#fff;transform:translateY(-1px)}
    .btn-outline{color:var(--teal);border-color:var(--teal);background:transparent}
    .btn-outline:hover{background:#e7f2ef;color:var(--teal-dark)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:8px;color:var(--ink);font-size:20px}
    .page-hero{position:relative;overflow:hidden;background:#e8ede7;border-bottom:1px solid var(--line)}
    .page-hero:before{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(22,122,108,.18);border-radius:50%;right:8%;top:-210px}
    .page-hero:after{content:"";position:absolute;width:128px;height:128px;border:1px solid rgba(230,110,75,.4);border-radius:50%;right:26%;bottom:-75px}
    .hero-inner{position:relative;padding:62px 0 66px}
    .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
    .breadcrumb a{color:var(--teal);font-weight:700}
    .breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px}
    .breadcrumb span{color:#8a9690}
    .eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--teal);font-size:12px;letter-spacing:.1em;font-weight:800}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
    h1,h2,h3,p{margin-top:0}
    h1{max-width:820px;margin:12px 0 14px;font-size:44px;line-height:1.2;letter-spacing:-.035em;font-weight:800}
    .hero-summary{max-width:700px;margin:0;color:var(--muted);font-size:17px}
    .section{padding:88px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .section-head h2{font-size:30px;line-height:1.3;letter-spacing:-.025em;margin:0}
    .section-head p{max-width:590px;margin:10px 0 0;color:var(--muted)}
    .text-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:14px;font-weight:750;white-space:nowrap}
    .text-link:hover{gap:12px;color:var(--teal-dark);text-decoration:underline;text-underline-offset:4px}
    .news-index{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:start}
    .feature-story{position:relative;min-height:430px;padding:35px;border-radius:var(--radius-lg);overflow:hidden;background:var(--ink);color:#fff;display:flex;align-items:end;box-shadow:var(--shadow)}
    .feature-story:before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(18,35,31,.98) 25%,rgba(18,35,31,.72) 60%,rgba(22,122,108,.45))}
    .feature-story:after{content:"";position:absolute;width:300px;height:300px;border:1px solid rgba(255,255,255,.2);border-radius:50%;right:-100px;top:-90px}
    .editorial-art{position:absolute;right:35px;top:54px;width:44%;height:230px;border:1px solid rgba(220,246,238,.3);border-radius:16px;background:linear-gradient(145deg,#24695c,#173b34);transform:rotate(5deg)}
    .editorial-art:before{content:"";position:absolute;left:22px;right:22px;top:27px;height:12px;border-radius:10px;background:rgba(255,255,255,.52);box-shadow:0 30px 0 rgba(255,255,255,.22),0 60px 0 rgba(255,255,255,.22),0 90px 0 rgba(255,255,255,.13)}
    .editorial-art:after{content:"";position:absolute;width:54px;height:54px;border-radius:50%;right:18px;bottom:18px;background:var(--coral)}
    .story-copy{max-width:580px;position:relative;z-index:2}
    .tag{display:inline-flex;align-items:center;color:#a9e5d8;font-size:12px;letter-spacing:.06em;font-weight:800}
    .tag:before{content:"";width:6px;height:6px;margin-right:7px;border-radius:50%;background:var(--coral)}
    .story-copy h3{font-size:28px;line-height:1.35;margin:12px 0}
    .story-copy p{margin:0 0 16px;color:#d4e2dd;max-width:510px}
    .story-meta{display:flex;gap:16px;color:#afc3bb;font-size:13px;align-items:center}
    .story-meta a{color:#d9f3ec;font-weight:750}
    .story-meta a:hover{text-decoration:underline;text-underline-offset:4px}
    .chapter-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
    .chapter-list h3{padding:22px 24px 16px;margin:0;font-size:18px;border-bottom:1px solid var(--line)}
    .chapter-link{display:flex;gap:15px;padding:18px 22px;border-bottom:1px solid var(--line);align-items:start}
    .chapter-link:last-child{border-bottom:0}
    .chapter-link:hover{background:#f2f7f4}
    .chapter-no{font-size:13px;color:var(--coral);font-weight:800;line-height:1.6}
    .chapter-copy{flex:1}
    .chapter-copy strong{display:block;font-size:15px;line-height:1.55;color:var(--text)}
    .chapter-copy span{display:block;margin-top:3px;font-size:13px;line-height:1.55;color:var(--muted)}
    .reading-strip{padding:24px 0 0}
    .strip-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .strip-item{padding:22px 28px;border-right:1px solid var(--line);display:flex;gap:16px}
    .strip-item:last-child{border:0}
    .strip-no{color:var(--teal);font-size:13px;font-weight:800}
    .strip-item strong{display:block;font-size:15px;margin-bottom:2px}
    .strip-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
    .catalog-section{background:#eeece6}
    .catalog-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
    .catalog-intro{grid-column:span 4;padding:24px 8px 0 0}
    .catalog-intro h2{font-size:31px;line-height:1.32;margin-bottom:14px}
    .catalog-intro p{color:var(--muted);margin-bottom:22px}
    .catalog-items{grid-column:span 8;display:grid;gap:14px}
    .catalog-card{display:grid;grid-template-columns:92px 1fr auto;gap:20px;align-items:center;padding:24px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 5px 16px rgba(18,35,31,.025);transition:.25s}
    .catalog-card:hover{transform:translateY(-3px);border-color:var(--teal);box-shadow:var(--shadow-hover)}
    .catalog-number{font-size:32px;line-height:1;color:#a0b9b0;font-weight:800;letter-spacing:-.06em}
    .catalog-card h3{font-size:18px;line-height:1.4;margin:0 0 6px}
    .catalog-card p{font-size:14px;color:var(--muted);line-height:1.7;margin:0}
    .catalog-arrow{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--teal);font-size:19px}
    .catalog-card:hover .catalog-arrow{background:var(--teal);border-color:var(--teal);color:#fff}
    .guide-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:24px}
    .guide-panel{border-radius:var(--radius-lg);padding:34px;border:1px solid var(--line);background:var(--white)}
    .guide-panel.dark{background:var(--ink);color:#fff;border-color:var(--ink);position:relative;overflow:hidden}
    .guide-panel.dark:after{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(126,211,196,.24);border-radius:50%;right:-72px;bottom:-90px}
    .guide-panel h2{font-size:28px;line-height:1.3;margin-bottom:12px}
    .guide-panel p{color:var(--muted);margin-bottom:20px}
    .guide-panel.dark p{color:#c9d9d3;max-width:470px;position:relative;z-index:1}
    .guide-list{list-style:none;padding:0;margin:0}
    .guide-list li{padding:14px 0;border-bottom:1px solid var(--line);display:flex;gap:13px;color:var(--text)}
    .guide-list li:last-child{border-bottom:0}
    .guide-list b{color:var(--teal);font-size:13px;min-width:25px}
    .guide-panel.dark .btn{position:relative;z-index:1}
    .faq-section{padding-top:18px}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
    .faq-intro h2{font-size:31px;line-height:1.3;margin-bottom:13px}
    .faq-intro p{color:var(--muted);margin-bottom:22px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line);background:transparent}
    .faq-question{width:100%;background:none;border:0;text-align:left;padding:20px 40px 20px 16px;position:relative;color:var(--text);font-size:16px;font-weight:750;line-height:1.5}
    .faq-question:after{content:"+";position:absolute;right:14px;top:16px;color:var(--teal);font-size:24px;font-weight:400}
    .faq-item.active .faq-question{border-left:3px solid var(--teal);padding-left:13px;color:var(--teal)}
    .faq-item.active .faq-question:after{content:"−"}
    .faq-answer{display:none;padding:0 20px 20px 16px;color:var(--muted);font-size:15px}
    .faq-item.active .faq-answer{display:block}
    .cta-band{margin-top:88px;background:var(--ink);color:#fff;position:relative;overflow:hidden}
    .cta-band:after{content:"";position:absolute;width:410px;height:410px;border:1px solid rgba(126,211,196,.22);border-radius:50%;right:-120px;top:-240px}
    .cta-inner{padding:55px 0;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;z-index:1}
    .cta-inner h2{font-size:29px;line-height:1.3;margin:0 0 9px}
    .cta-inner p{margin:0;color:#c9d9d3}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
    .cta-band .btn-outline{color:#d9f4ed;border-color:#8dcfc1}
    .cta-band .btn-outline:hover{background:rgba(255,255,255,.1);color:#fff}
    .site-footer{background:var(--ink);border-top:2px solid var(--teal);color:#d1dfd9;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:38px}
    .footer-brand p{max-width:290px;margin:14px 0 0;font-size:14px;line-height:1.75;color:#b9cac3}
    .footer-title{font-size:14px;color:#fff;margin:3px 0 15px;font-weight:750}
    .footer-links{display:grid;gap:9px}
    .footer-links a{font-size:14px;color:#bdcec7}
    .footer-links a:hover{color:#8fddcf;text-decoration:underline;text-underline-offset:4px}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:19px;font-size:13px;color:#a9bbb3}
    .footer-bottom a:hover{color:#fff}
    @media(max-width:1100px){
      .nav{gap:14px}.nav a{font-size:13px}.catalog-intro{grid-column:span 12;padding:0}.catalog-items{grid-column:span 12}
      .faq-grid{gap:40px}.header-actions .btn{padding:10px 13px}
    }
    @media(max-width:820px){
      .container{width:min(calc(100% - 36px),var(--container))}
      .nav{display:none;position:absolute;top:76px;left:0;right:0;padding:10px 18px 18px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);align-items:stretch;flex-direction:column;gap:0}
      .nav.open{display:flex}.nav a{padding:12px 14px}.nav a:after{bottom:8px;right:auto;width:3px;height:26px;transform:scaleY(0)}
      .nav a:hover:after,.nav a.active:after{transform:scaleY(1)}
      .menu-toggle{display:block}.header-actions .btn{display:none}
      h1{font-size:34px}.hero-inner{padding:49px 0 52px}.section{padding:62px 0}
      .news-index,.guide-grid,.faq-grid{grid-template-columns:1fr}.feature-story{min-height:380px}.editorial-art{opacity:.7}
      .faq-grid{gap:25px}.strip-grid{grid-template-columns:1fr}.strip-item{border-right:0;border-bottom:1px solid var(--line)}.strip-item:last-child{border-bottom:0}
      .cta-inner{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:520px){
      body{font-size:15px}.container{width:min(calc(100% - 28px),var(--container))}.header-inner{height:68px}.brand{font-size:16px}.brand-mark{width:29px;height:29px}
      .nav{top:68px}.page-hero{min-height:auto}.hero-inner{padding:39px 0 43px}h1{font-size:29px}.hero-summary{font-size:15px}
      .section{padding:48px 0}.section-head{align-items:start;flex-direction:column;gap:10px;margin-bottom:24px}.section-head h2,.catalog-intro h2,.faq-intro h2,.guide-panel h2{font-size:25px}
      .feature-story{min-height:415px;padding:24px}.story-copy h3{font-size:23px}.editorial-art{width:60%;right:-16px;top:47px;opacity:.42}
      .catalog-card{grid-template-columns:52px 1fr;gap:13px;padding:19px}.catalog-number{font-size:25px}.catalog-arrow{display:none}
      .guide-panel{padding:25px}.cta-band{margin-top:48px}.cta-inner{padding:42px 0}.cta-inner h2{font-size:25px}.cta-actions{width:100%}.cta-actions .btn{flex:1}
      .footer-grid{grid-template-columns:1fr;gap:28px}.footer-bottom{margin-top:31px;flex-direction:column}.story-meta{flex-wrap:wrap}
    }

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