/* roulang page: index */
:root{--ink:#172f2b;--muted:#64736c;--green:#205b46;--green-dark:#123d30;--lime:#d8ed9c;--paper:#f5f6f0;--white:#fff;--line:#dfe5dc;--soft:#edf1e8;--radius:20px;--shadow:0 16px 40px rgba(22,48,37,.07);--width:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.85}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input,summary{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}img{display:block;width:100%;object-fit:cover}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35}h1{font-size:clamp(32px,4.2vw,56px);letter-spacing:-1.5px}h2{font-size:clamp(25px,3vw,36px);letter-spacing:-.7px}h3{font-size:19px}p{color:var(--muted)}a,button,summary{transition:background .2s,color .2s,transform .2s,box-shadow .2s}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #8bb85b;outline-offset:5px}a:active,button:active{transform:translateY(1px)}::selection{background:var(--lime);color:var(--ink)}.container{width:min(var(--width),calc(100% - 64px));margin:auto}.site-header{position:sticky;top:0;z-index:40;background:rgba(245,246,240,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav-row{height:88px;display:flex;align-items:center;gap:42px}.brand{display:inline-flex;gap:12px;align-items:center;font-size:23px;font-weight:850;white-space:nowrap}.brand-mark{width:43px;height:43px;background:var(--green);color:var(--lime);border-radius:13px;display:grid;place-items:center;font-size:20px;letter-spacing:-2px}.brand small{font-size:11px;letter-spacing:2px;display:block;color:var(--muted);font-weight:500;line-height:1.4}.nav-links{display:flex;align-items:center;gap:30px;margin-left:auto}.nav-links a{font-size:14px;font-weight:650;padding:8px 0;position:relative}.nav-links a:hover,.nav-links a.active{color:var(--green)}.nav-links a.active:after{content:"";height:3px;width:20px;border-radius:3px;background:var(--green);position:absolute;bottom:0;left:0}.button{display:inline-flex;justify-content:center;align-items:center;gap:16px;padding:12px 23px;border:1px solid transparent;border-radius:10px;background:var(--green);color:white;font-weight:700;line-height:1.5;min-height:48px}.button:hover{background:var(--green-dark);box-shadow:0 7px 18px #123d3020;transform:translateY(-2px)}.button.light{background:var(--lime);color:var(--ink)}.button.light:hover{background:#e6f7b8}.button.outline{background:transparent;color:var(--ink);border-color:var(--line)}.button.outline:hover{background:var(--soft)}.menu-toggle{display:none;background:transparent;border:1px solid var(--line);border-radius:8px;padding:8px 13px;color:var(--ink)}section{padding:76px 0;border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:750;display:flex;align-items:center;gap:9px;margin-bottom:17px;color:var(--green)}.eyebrow:before{content:"";width:8px;height:8px;background:currentColor;border-radius:50%}.hero{padding:48px 0 52px}.hero-banner{position:relative;border-radius:26px;overflow:hidden;background:var(--green-dark);padding:48px 48px 98px;color:white;isolation:isolate}.hero-banner:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,41,32,.98),rgba(12,41,32,.81) 65%,rgba(12,41,32,.65)),url('/assets/images/6245743f95519f6f.webp') center/cover;z-index:-1}.hero .eyebrow{color:var(--lime)}.hero-intro{max-width:830px;color:#d0ddd4;font-size:16px;margin-top:23px;line-height:1.95}.hero h1 span{color:var(--lime)}.choice-grid{position:relative;display:grid;grid-template-columns:1.22fr 1fr 1fr;gap:18px;margin:-50px 24px 0}.choice{padding:27px;background:white;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.choice.featured{background:var(--lime);border-color:#c8df8b}.choice-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:17px}.badge{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:50px;padding:3px 10px;color:var(--green);font-size:11px;font-weight:700;white-space:nowrap}.featured .badge{background:var(--green);color:white;border:0}.choice p{margin:12px 0 21px;font-size:14px}.choice .button{width:100%;min-height:44px}.text-link{font-size:14px;font-weight:700;color:var(--green);display:inline-flex;align-items:center;gap:18px}.text-link:hover{gap:24px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:32px}.section-head p{max-width:590px;margin-top:18px}.section-head .text-link{flex-shrink:0}.section-no{display:block;color:#899889;font-size:12px;font-weight:600;letter-spacing:2px;margin-bottom:10px}.calendar{display:grid;grid-template-columns:280px 1fr;gap:48px}.calendar p{margin-top:17px}.calendar-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}.calendar-list li{display:grid;grid-template-columns:70px 1fr auto;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding:20px 0}.calendar-list p{margin:5px 0 0;font-size:14px}.day{font-size:13px;font-weight:700;color:var(--green)}.pill{font-size:11px;background:var(--soft);padding:4px 12px;border-radius:20px;color:var(--green);white-space:nowrap}.topics{background:#eaf0e4}.topic-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:20px}.topic-card{background:var(--white);border:1px solid #dbe3d3;border-radius:var(--radius);padding:28px}.topic-card:first-child{background:var(--green);color:white}.topic-card:first-child p{color:#d0dfd3}.topic-card p{margin-top:15px;font-size:14px}.topic-icon{font-size:26px;display:block;margin-bottom:27px;color:#97b75a}.topic-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:26px}.topic-tags span{padding:4px 12px;font-size:12px;border-radius:5px;background:#f2f5ec;color:var(--green)}.topic-card:first-child .topic-tags span{background:#ffffff14;color:#e2edce}.viewpoint{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}.image-wrap{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--soft)}.image-wrap img{height:360px;transition:transform .5s}.image-wrap:hover img{transform:scale(1.035)}.image-caption{position:absolute;left:20px;bottom:20px;padding:7px 13px;border-radius:7px;background:#163a2ce8;color:white;font-size:12px}.viewpoint p{margin:22px 0}.quote{border-left:3px solid var(--green);padding:4px 0 4px 20px;font-size:18px;line-height:1.8;font-weight:650}.news{background:white}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.news-card{border:1px solid var(--line);border-radius:16px;background:var(--paper);padding:25px;display:flex;flex-direction:column;min-height:225px}.news-card:hover{border-color:#a7bba4;box-shadow:var(--shadow);transform:translateY(-3px)}.news-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--muted);font-size:11px;margin-bottom:20px}.news-card h3{font-size:18px;overflow-wrap:anywhere}.news-card p{font-size:14px;margin-top:13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.news-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:22px;color:var(--green);font-size:12px}.empty{grid-column:1/-1;border:1px dashed var(--line);padding:40px;border-radius:16px;color:var(--muted);text-align:center}.media-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}.media-feature{border-radius:var(--radius);overflow:hidden;background:white;border:1px solid var(--line)}.media-feature img{height:280px}.media-body{padding:25px}.media-body p{margin-top:12px;font-size:14px}.media-notes{display:flex;flex-direction:column;gap:16px}.media-note{padding:24px;border-radius:16px;background:var(--soft);border:1px solid var(--line)}.media-note .badge{margin-bottom:12px;background:white}.media-note p{font-size:14px;margin-top:10px}.analysis{background:var(--ink);color:white}.analysis .section-no{color:#a3bd9d}.analysis p{color:#bacbbf}.analysis-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:70px}.analysis-copy p{margin-top:20px}.measure{margin-bottom:23px}.measure-head{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px}.track{height:7px;background:#ffffff15;border-radius:7px;overflow:hidden}.track span{display:block;height:100%;background:var(--lime);border-radius:7px}.chart-note{font-size:12px!important;margin-top:20px!important}.device-row{display:grid;grid-template-columns:1fr 1fr;gap:25px}.device{display:flex;gap:22px;padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:white}.device-number{width:45px;height:45px;display:grid;place-items:center;background:var(--soft);border-radius:12px;flex-shrink:0;color:var(--green);font-weight:700}.device p{font-size:14px;margin-top:12px}.security{background:#edf1e7}.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.security-item{border-top:2px solid #b1c59d;padding-top:24px}.security-item b{display:block;font-size:12px;color:var(--green);margin-bottom:12px}.security-item h3{font-size:17px}.security-item p{font-size:14px;margin-top:12px}.faq-layout{display:grid;grid-template-columns:.8fr 1.3fr;gap:80px}.faq-layout>div>p{margin-top:20px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{padding:23px 30px 23px 0;cursor:pointer;font-weight:650;position:relative;list-style:none}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:0;font-size:22px;color:var(--green);top:17px}details[open] summary:after{content:"−"}details p{padding:0 24px 23px 0;font-size:14px}summary:hover{color:var(--green)}.subscribe{padding:48px 0;background:var(--green-dark);color:white}.subscribe-row{display:flex;align-items:center;justify-content:space-between;gap:40px}.subscribe h2{font-size:28px}.subscribe p{color:#c7d8ca;margin-top:12px;max-width:760px}.subscribe .button{flex-shrink:0}.site-footer{padding:43px 0 26px;background:#eef1e9}.footer-top{display:flex;justify-content:space-between;gap:40px;align-items:start}.footer-copy{max-width:600px;font-size:12px;line-height:1.9}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #d9e0d3;padding-top:21px;margin-top:30px;font-size:11px;color:var(--muted)}.footer-bottom a:hover{color:var(--green)}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--ink);color:white;padding:13px 22px;border-radius:12px;box-shadow:var(--shadow);z-index:90;font-size:13px;max-width:90vw;width:max-content;transition:opacity .2s,transform .2s}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(min-width:1400px){.hero-banner{padding-top:58px;padding-bottom:110px}}
@media(max-width:1024px){.nav-row{gap:24px}.nav-links{gap:22px}.container{width:calc(100% - 48px)}.hero-banner{padding:38px 34px 90px}.choice-grid{margin-left:16px;margin-right:16px;gap:12px}.choice{padding:21px}.calendar{grid-template-columns:230px 1fr;gap:30px}.viewpoint{gap:32px}.security-grid{grid-template-columns:repeat(2,1fr)}.analysis-grid{gap:35px}.faq-layout{gap:40px}.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){section{padding:54px 0}.nav-row{height:76px;gap:15px}.brand{font-size:21px}.nav-cta{margin-left:auto;font-size:12px;padding:10px 14px;min-height:42px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:var(--paper);padding:18px 24px;border-bottom:1px solid var(--line);margin:0;box-shadow:var(--shadow)}.nav-links.open{display:flex}.hero{padding:28px 0 40px}.hero-banner{padding:30px 26px 80px}.hero-intro{font-size:14px}.choice-grid{grid-template-columns:1fr 1fr}.choice.featured{grid-column:1/-1}.choice.featured .button{width:auto;min-width:200px}.choice p{font-size:13px}.calendar,.viewpoint,.analysis-grid,.faq-layout{grid-template-columns:1fr;gap:30px}.calendar-list li{grid-template-columns:60px 1fr auto}.topic-grid{grid-template-columns:1fr 1fr}.topic-card:first-child{grid-column:1/-1}.topic-icon{margin-bottom:16px}.section-head{align-items:start;gap:20px}.media-grid{grid-template-columns:1fr}.media-notes{display:grid;grid-template-columns:1fr 1fr}.device-row{grid-template-columns:1fr}.subscribe-row{align-items:start;flex-direction:column;gap:22px}.footer-top{flex-direction:column;gap:23px}.image-wrap img{height:310px}.footer-bottom{flex-wrap:wrap}}
@media(max-width:520px){.container{width:calc(100% - 32px)}.brand{gap:8px;font-size:19px}.brand-mark{width:36px;height:36px;font-size:17px;border-radius:10px}.brand small{font-size:9px}.nav-row{gap:9px}.nav-cta{font-size:11px;padding:9px 11px}.menu-toggle{padding:7px 10px;font-size:12px}.hero-banner{border-radius:19px;padding:27px 22px 72px}h1{font-size:34px;letter-spacing:-1px}.choice-grid{margin-left:10px;margin-right:10px;grid-template-columns:1fr}.choice.featured{grid-column:auto}.choice{padding:22px}.choice:not(.featured){display:grid;grid-template-columns:1fr auto;gap:10px 20px}.choice:not(.featured) .choice-top{margin:0}.choice:not(.featured) p{grid-column:1/-1;margin:0;order:3}.choice:not(.featured) .badge{display:none}.choice h3{font-size:17px}.choice.featured .button{width:100%}.section-head{flex-direction:column}.calendar-list li{grid-template-columns:45px 1fr;gap:12px}.calendar-list .pill{display:none}.topic-grid,.news-grid,.media-notes{grid-template-columns:1fr}.topic-card:first-child{grid-column:auto}.topic-card{padding:24px}.image-wrap img{height:260px}.media-feature img{height:220px}.security-grid{gap:24px 19px}.security-item h3{font-size:16px}.security-item p{font-size:13px}.device{padding:23px;gap:16px}.subscribe h2{font-size:25px}.footer-bottom{font-size:10px}.news-card{min-height:200px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang page: article */
:root{--ink:#172f2b;--muted:#64736c;--green:#205b46;--green-dark:#123d30;--lime:#d8ed9c;--paper:#f5f6f0;--white:#fff;--line:#dfe5dc;--soft:#edf1e8;--radius:20px;--shadow:0 16px 40px rgba(22,48,37,.07);--width:1200px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.85}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button,a,input,summary{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
img{display:block;width:100%;max-width:100%;object-fit:cover}
a,button,summary{transition:background .2s,color .2s,transform .2s,box-shadow .2s}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #8bb85b;outline-offset:5px}
a:active,button:active{transform:translateY(1px)}
h1,h2,h3,p,figure{margin:0}
h1,h2,h3{line-height:1.45}
.container{width:min(var(--width),calc(100% - 64px));margin:auto}
.site-header{position:sticky;top:0;z-index:40;background:rgba(245,246,240,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.nav-row{height:88px;display:flex;align-items:center;gap:42px}
.brand{display:inline-flex;gap:12px;align-items:center;font-size:23px;font-weight:850;white-space:nowrap}
.brand-mark{width:43px;height:43px;background:var(--green);color:var(--lime);border-radius:13px;display:grid;place-items:center;font-size:20px;letter-spacing:-2px}
.brand small{font-size:11px;letter-spacing:2px;display:block;color:var(--muted);font-weight:500;line-height:1.4}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-links a{font-size:14px;font-weight:650;padding:8px 0;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--green)}
.nav-links a.active:after{content:"";height:3px;width:20px;border-radius:3px;background:var(--green);position:absolute;bottom:0;left:0}
.button{display:inline-flex;justify-content:center;align-items:center;gap:16px;padding:12px 23px;border:1px solid transparent;border-radius:10px;background:var(--green);color:white;font-weight:700;line-height:1.5;min-height:48px}
.button:hover{background:var(--green-dark);box-shadow:0 7px 18px #123d3020;transform:translateY(-2px)}
.button.light{background:var(--lime);color:var(--ink)}
.button.light:hover{background:#e6f7b8}
.button.outline{background:transparent;color:var(--ink);border-color:var(--line)}
.button.outline:hover{background:var(--soft)}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);border-radius:8px;padding:8px 13px;color:var(--ink)}
section{padding:64px 0;border-bottom:1px solid var(--line)}
.eyebrow{font-size:12px;letter-spacing:2px;font-weight:750;display:flex;align-items:center;gap:9px;margin-bottom:17px;color:var(--green)}
.eyebrow:before{content:"";width:8px;height:8px;background:currentColor;border-radius:50%}
.badge{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:50px;padding:3px 10px;color:var(--green);font-size:11px;font-weight:700}
.text-link{font-size:14px;font-weight:700;color:var(--green);display:inline-flex;align-items:center;gap:18px}
.text-link:hover{gap:24px}
.breadcrumb{padding-top:26px;display:flex;gap:11px;align-items:center;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.breadcrumb a:hover{color:var(--green)}
.article-hero{padding:34px 0 42px}
.headline-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:64px;align-items:center}
h1{font-size:clamp(29px,3.5vw,46px);letter-spacing:-1px;font-weight:800;overflow-wrap:anywhere;max-width:820px}
.article-deck{margin-top:23px;color:var(--muted);font-size:16px;line-height:1.95;max-width:760px;overflow-wrap:anywhere}
.article-meta{display:flex;gap:13px;align-items:center;flex-wrap:wrap;margin-top:25px;font-size:12px;color:var(--muted)}
.article-meta .divider{width:1px;height:13px;background:var(--line)}
.feature-card{border:1px solid var(--line);background:white;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.feature-card img{height:170px}
.feature-card figcaption{padding:17px 20px}
.feature-card strong{display:block;font-size:15px}
.feature-card span{font-size:12px;color:var(--muted)}
.reading-layout{display:grid;grid-template-columns:minmax(0,800px) minmax(230px,1fr);gap:40px;align-items:start;padding-top:36px;padding-bottom:64px}
.article-panel{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:38px 40px;min-width:0;box-shadow:var(--shadow)}
.article-panel section{padding:24px 0}
.article-content{max-width:720px;margin:auto;font-size:16px;line-height:2;color:#34483e;overflow-wrap:anywhere}
.article-content>:first-child{margin-top:0}
.article-content h2{font-size:25px;color:var(--ink);margin:38px 0 18px;padding-top:8px}
.article-content h3{font-size:20px;color:var(--ink);margin:28px 0 14px}
.article-content p{margin:0 0 22px}
.article-content a{color:var(--green);text-decoration:underline;text-decoration-color:#b2c7a7;text-underline-offset:5px}
.article-content a:hover{text-decoration-color:var(--green)}
.article-content ul,.article-content ol{padding-left:25px;margin:18px 0 25px}
.article-content li{padding-left:5px;margin-bottom:10px}
.article-content li::marker{color:var(--green)}
.article-content blockquote{margin:28px 0;padding:20px 24px;border-left:4px solid var(--green);background:var(--soft);border-radius:0 12px 12px 0}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{height:auto;border-radius:12px;margin:25px auto}
.article-content figure{margin:24px 0}
.article-content figcaption{text-align:center;font-size:12px;color:var(--muted)}
.article-content table{display:block;width:100%;overflow:auto;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px 16px;text-align:left}
.article-content th{background:var(--soft)}
.article-content pre{overflow:auto;padding:20px;background:var(--soft);border-radius:12px;font-size:13px;max-width:100%}
.article-end{margin-top:32px;padding-top:22px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:16px}
.sidebar{position:sticky;top:120px;display:grid;gap:20px}
.side-card{border:1px solid var(--line);border-radius:var(--radius);padding:25px;background:var(--soft)}
.side-card h2{font-size:18px;margin:12px 0}
.side-card p{font-size:13px;color:var(--muted)}
.side-card .eyebrow{margin:0}
.side-card ul{list-style:none;padding:0;margin:20px 0 0}
.side-card li{padding:11px 0;border-top:1px solid #d7dfd1;font-size:13px}
.side-card li::before{content:"·";color:var(--green);font-weight:bold;margin-right:10px}
.side-card.dark{background:var(--green-dark);color:white;border-color:var(--green-dark)}
.side-card.dark p{color:#cbd9cc}
.side-card.dark .badge{color:var(--lime);border-color:#55745a}
.side-card.dark .button{margin-top:22px;width:100%}
.security-section{background:var(--soft)}
.security-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;align-items:start}
.section-no{display:block;color:#899889;font-size:12px;font-weight:600;letter-spacing:2px;margin-bottom:10px}
.security-section h2,.faq-section h2{font-size:29px;letter-spacing:-.5px}
.security-section .lead{color:var(--muted);margin-top:18px;max-width:400px}
.security-items{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.security-item{padding:24px;border-radius:16px;border:1px solid var(--line);background:white}
.security-item h3{font-size:17px;margin-bottom:12px}
.security-item p{font-size:14px;color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px}
.faq-list details{border-bottom:1px solid var(--line);padding:20px 0}
.faq-list details:first-child{padding-top:0}
.faq-list summary{list-style:none;font-weight:700;cursor:pointer;padding-right:30px;position:relative;font-size:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"＋";position:absolute;right:0;top:0;color:var(--green)}
.faq-list details[open] summary::after{content:"−"}
.faq-list summary:hover{color:var(--green)}
.faq-list p{color:var(--muted);font-size:14px;margin-top:15px}
.return-section{padding:38px 0;background:var(--green-dark);color:white}
.return-row{display:flex;align-items:center;justify-content:space-between;gap:30px}
.return-row h2{font-size:24px}
.return-row p{font-size:14px;color:#cbd9cc;margin-top:8px}
.empty-state{padding:75px 24px;text-align:center}
.empty-state h2{font-size:28px;margin-bottom:25px}
.site-footer{background:var(--paper);padding:50px 0 22px}
.footer-top{display:flex;align-items:flex-start;justify-content:space-between;gap:60px;padding-bottom:35px}
.footer-copy{max-width:670px;font-size:13px;color:var(--muted)}
.footer-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.footer-bottom a:hover{color:var(--green)}
@media(min-width:1025px){.nav-links{display:flex!important}}
@media(max-width:1024px){
.nav-row{gap:24px}.nav-links{gap:22px}
.headline-grid{grid-template-columns:minmax(0,1fr) 260px;gap:32px}
.reading-layout{grid-template-columns:minmax(0,1fr) 235px;gap:24px}
.article-panel{padding:30px}
.security-grid,.faq-layout{gap:35px}
.security-items{grid-template-columns:1fr}
.footer-top{gap:35px}.footer-copy{max-width:540px}
}
@media(max-width:768px){
.container{width:calc(100% - 40px)}
.nav-row{height:76px;gap:15px;flex-wrap:wrap;position:relative}
.brand{font-size:21px}.brand-mark{width:39px;height:39px}
.menu-toggle{display:block;margin-left:auto}
.header-cta{min-height:40px;padding:9px 13px;font-size:12px}
.nav-links{display:none;position:absolute;top:75px;left:-20px;right:-20px;padding:18px 20px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);gap:25px;margin:0}
.nav-links.is-open{display:flex}
.headline-grid{grid-template-columns:1fr;gap:28px}
.feature-card{display:grid;grid-template-columns:180px 1fr;align-items:center;max-width:100%}
.feature-card img{height:125px}
.reading-layout{grid-template-columns:1fr}
.sidebar{position:static;grid-template-columns:1fr 1fr}
.article-panel{padding:30px}
.security-grid,.faq-layout{grid-template-columns:1fr;gap:28px}
.security-items{grid-template-columns:1fr 1fr}
section{padding:48px 0}
.footer-top{flex-direction:column;gap:25px}
.footer-copy{max-width:none}
}
@media(max-width:520px){
.container{width:calc(100% - 32px)}
.brand small{font-size:9px;letter-spacing:1px}
.brand{gap:8px;font-size:20px}.brand-mark{font-size:18px;width:36px;height:36px}
.nav-row{gap:10px}
.menu-toggle{padding:6px 9px;font-size:12px}
.header-cta{padding:9px 11px;font-size:11px;min-height:36px}
.nav-links{left:-16px;right:-16px;padding-left:16px;padding-right:16px}
.breadcrumb{padding-top:20px}
.article-hero{padding:25px 0 30px}
h1{font-size:30px;letter-spacing:-.5px}
.article-deck{font-size:14px;margin-top:18px}
.feature-card{grid-template-columns:120px 1fr}
.feature-card img{height:110px}
.feature-card figcaption{padding:15px}
.article-panel{padding:25px 20px;border-radius:15px}
.article-content{font-size:15px;line-height:1.95}
.article-content h2{font-size:22px}
.article-content h3{font-size:18px}
.article-end{flex-direction:column;gap:6px}
.sidebar{grid-template-columns:1fr}
.reading-layout{padding-top:25px;padding-bottom:40px}
.security-items{grid-template-columns:1fr}
.security-section h2,.faq-section h2{font-size:25px}
.return-row{align-items:flex-start;flex-direction:column;gap:22px}
.return-row .button{width:100%}
.footer-bottom{flex-direction:column;gap:9px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}

/* roulang page: category1 */
:root{--ink:#172f2b;--muted:#64736c;--green:#205b46;--green-dark:#123d30;--lime:#d8ed9c;--paper:#f5f6f0;--white:#fff;--line:#dfe5dc;--soft:#edf1e8;--radius:20px;--shadow:0 16px 40px rgba(22,48,37,.07);--width:1200px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.85}
h1,h2,h3,p{margin:0}
h1,h2,h3{line-height:1.4;text-wrap:balance}
h1{font-size:clamp(32px,4.5vw,52px);letter-spacing:-1.5px}
h2{font-size:clamp(25px,3vw,34px);letter-spacing:-.7px}
h3{font-size:19px}
p{color:var(--muted)}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button,a,input,summary{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
img{display:block;width:100%;object-fit:cover}
a,button,summary{transition:background .2s,color .2s,transform .2s,box-shadow .2s}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #8bb85b;outline-offset:5px}
a:active,button:active{transform:translateY(1px)}
.container{width:min(var(--width),calc(100% - 64px));margin:auto}
.site-header{position:sticky;top:0;z-index:40;background:rgba(245,246,240,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.nav-row{height:88px;display:flex;align-items:center;gap:42px}
.brand{display:inline-flex;gap:12px;align-items:center;font-size:23px;font-weight:850;white-space:nowrap}
.brand-mark{width:43px;height:43px;background:var(--green);color:var(--lime);border-radius:13px;display:grid;place-items:center;font-size:20px;letter-spacing:-2px}
.brand small{font-size:11px;letter-spacing:2px;display:block;color:var(--muted);font-weight:500;line-height:1.4}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-links a{font-size:14px;font-weight:650;padding:8px 0;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--green)}
.nav-links a.active:after{content:"";height:3px;width:20px;border-radius:3px;background:var(--green);position:absolute;bottom:0;left:0}
.button{display:inline-flex;justify-content:center;align-items:center;gap:16px;padding:12px 23px;border:1px solid transparent;border-radius:10px;background:var(--green);color:white;font-weight:700;line-height:1.5;min-height:48px}
.button:hover{background:var(--green-dark);box-shadow:0 7px 18px #123d3020;transform:translateY(-2px)}
.button.light{background:var(--lime);color:var(--ink)}
.button.light:hover{background:#e6f7b8}
.button.outline{background:transparent;color:var(--ink);border-color:var(--line)}
.button.outline:hover{background:var(--soft)}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);border-radius:8px;padding:8px 13px;color:var(--ink)}
main{overflow:hidden}
section{padding:76px 0;border-bottom:1px solid var(--line)}
.eyebrow{font-size:12px;letter-spacing:2px;font-weight:750;display:flex;align-items:center;gap:9px;margin-bottom:17px;color:var(--green)}
.eyebrow:before{content:"";width:8px;height:8px;background:currentColor;border-radius:50%}
.badge{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:50px;padding:3px 10px;color:var(--green);font-size:11px;font-weight:700;white-space:nowrap}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:32px}
.section-head p{max-width:560px;margin-top:16px}
.section-no{display:block;color:#899889;font-size:12px;font-weight:600;letter-spacing:2px;margin-bottom:10px}
.topic-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:20px}
.topic-card{background:var(--white);border:1px solid #dbe3d3;border-radius:var(--radius);padding:28px;transition:box-shadow .2s,transform .2s}
.topic-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.topic-card:first-child{background:var(--green);color:white}
.topic-card:first-child p{color:#d0dfd3}
.topic-card p{margin-top:15px;font-size:14px}
.topic-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:26px}
.topic-tags span{padding:4px 12px;font-size:12px;border-radius:5px;background:#f2f5ec;color:var(--green)}
.topic-card:first-child .topic-tags span{background:#ffffff14;color:#e2edce}
.hero{padding:44px 0 60px}
.breadcrumb{font-size:12px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.breadcrumb a:hover{color:var(--green)}
.hero-heading{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:end}
.hero-intro{font-size:16px;line-height:1.95}
.brand-line{color:var(--green);font-size:14px;font-weight:700;margin-bottom:12px}
.comparison{margin-top:36px;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-panel{border:1px solid var(--line);border-radius:var(--radius);padding:28px 32px;background:#eeefe9;position:relative;overflow:hidden}
.compare-panel.verified{background:var(--green-dark);border-color:var(--green-dark);color:white}
.compare-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
.compare-top span{font-size:12px;letter-spacing:1px}
.compare-top b{font-size:12px;padding:3px 10px;border-radius:30px;background:#ffffff99;color:var(--muted)}
.verified .compare-top b{background:#ffffff15;color:var(--lime)}
.compare-panel ul{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:10px}
.compare-panel li{display:flex;gap:10px;font-size:14px;color:var(--muted)}
.compare-panel li:before{content:"—";color:#8a958b}
.verified li{color:#d4e0d6}
.verified li:before{content:"✓";color:var(--lime)}
.hero-bottom{display:flex;align-items:center;gap:24px;margin-top:25px}
.hero-bottom p{font-size:12px}
.white-section{background:white}
.scenario-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
.scenario-intro p{margin-top:18px}
.scenario-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.scenario-list li{display:grid;grid-template-columns:42px 1fr;gap:20px;padding:23px 0;border-bottom:1px solid var(--line)}
.scenario-list .number{font-size:13px;color:var(--green);font-weight:750;padding-top:3px}
.scenario-list p{font-size:14px;margin-top:8px}
.media-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center}
.media-feature{margin:0;border-radius:var(--radius);overflow:hidden;background:white;border:1px solid var(--line)}
.image-wrap{overflow:hidden;position:relative}
.image-wrap img{height:330px;transition:transform .5s}
.image-wrap:hover img{transform:scale(1.035)}
.image-label{position:absolute;bottom:18px;left:18px;background:var(--green-dark);color:white;font-size:12px;padding:7px 14px;border-radius:8px}
.media-body{padding:21px 25px;font-size:13px;color:var(--muted)}
.media-notes{display:grid;gap:16px;margin-top:25px}
.media-note{padding:20px 23px;border-radius:14px;background:var(--soft);border:1px solid var(--line)}
.media-note p{font-size:14px;margin-top:7px}
.security{background:var(--green-dark);color:white}
.security .section-no{color:#a3bd9d}
.security .section-head p{color:#cfddd2}
.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.security-card{padding:25px 22px;border:1px solid #ffffff23;border-radius:16px;background:#ffffff05}
.security-card strong{display:block;color:var(--lime);font-size:12px;letter-spacing:1px;margin-bottom:20px}
.security-card h3{font-size:18px}
.security-card p{font-size:13px;color:#c4d5c9;margin-top:14px}
.security-note{margin-top:24px;padding:17px 22px;border-left:3px solid var(--lime);background:#ffffff08;border-radius:0 10px 10px 0;color:#dce7de;font-size:13px}
.faq-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:70px}
.faq-layout>div>p{margin-top:18px}
.faq-list{border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:23px 32px 23px 0;position:relative;font-size:16px;font-weight:700}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";position:absolute;right:0;top:23px;color:var(--green)}
details[open] summary:after{content:"−"}
summary:hover{color:var(--green)}
details p{padding:0 28px 24px 0;font-size:14px}
.cta-section{padding:48px 0 64px;border:0}
.cta-box{background:var(--lime);border:1px solid #cbdf9a;border-radius:var(--radius);padding:38px 42px;display:flex;gap:40px;justify-content:space-between;align-items:center}
.cta-box h2{font-size:28px}
.cta-box p{margin-top:12px;max-width:690px;color:#486044}
.cta-box .button{flex-shrink:0}
.site-footer{border-top:1px solid var(--line);padding:44px 0 22px;background:var(--soft)}
.footer-top{display:flex;align-items:start;justify-content:space-between;gap:70px;padding-bottom:35px}
.footer-copy{max-width:650px;font-size:13px}
.footer-bottom{border-top:1px solid #d4ddce;padding-top:20px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.footer-bottom a:hover{color:var(--green)}
@media(min-width:769px){.nav-links{display:flex!important}}
@media(max-width:1024px){
.nav-row{gap:22px}.nav-links{gap:20px}.container{width:calc(100% - 48px)}
.hero-heading{gap:30px}.hero-intro{font-size:15px}.scenario-layout,.faq-layout{gap:38px}
.topic-grid{grid-template-columns:repeat(3,1fr)}.topic-card{padding:23px}
.security-grid{grid-template-columns:repeat(2,1fr)}.media-grid{gap:28px}
.footer-top{gap:40px}.footer-copy{max-width:540px}
}
@media(max-width:768px){
section{padding:54px 0}.nav-row{height:76px;gap:14px;flex-wrap:wrap;position:relative}
.brand{font-size:21px}.brand small{font-size:10px}.brand-mark{width:39px;height:39px}
.menu-toggle{display:block;margin-left:auto}.header-cta{display:none}
.nav-links{display:none;position:absolute;top:76px;left:-24px;right:-24px;background:var(--paper);border-bottom:1px solid var(--line);padding:15px 24px;box-shadow:var(--shadow);gap:24px}
.nav-links.is-open{display:flex}.hero{padding:28px 0 45px}.hero-heading{grid-template-columns:1fr;gap:22px}
.comparison{gap:14px;margin-top:28px}.compare-panel{padding:22px}.compare-panel h3{font-size:18px}
.hero-bottom{align-items:flex-start;gap:18px}.hero-bottom p{max-width:300px}
.topic-grid{grid-template-columns:1fr}.topic-card{padding:26px}.topic-tags{margin-top:18px}
.scenario-layout,.media-grid,.faq-layout{grid-template-columns:1fr;gap:30px}
.section-head{gap:20px;margin-bottom:26px}.section-head p{max-width:100%}
.image-wrap img{height:320px}.cta-box{padding:30px;align-items:start;flex-direction:column;gap:24px}
.footer-top{flex-direction:column;gap:24px}.footer-copy{max-width:none}
}
@media(max-width:520px){
.container{width:calc(100% - 36px)}h1{font-size:33px;letter-spacing:-1px}
.nav-links{left:-18px;right:-18px;padding:14px 18px;gap:20px}.nav-links a{font-size:13px}
.comparison{grid-template-columns:1fr}.compare-panel{padding:23px}
.compare-top{margin-bottom:15px}.compare-panel ul{gap:7px}
.hero-bottom{flex-direction:column;gap:12px}.hero-bottom .button{width:100%}
.hero-bottom p{max-width:none}.section-head{align-items:start;flex-direction:column;gap:12px}
.security-grid{grid-template-columns:1fr}.security-card{padding:22px}.security-card strong{margin-bottom:10px}
.image-wrap img{height:245px}.scenario-list li{gap:12px;grid-template-columns:30px 1fr}
.cta-box{padding:26px}.cta-box h2{font-size:25px}.cta-box .button{width:100%}
.footer-bottom{flex-direction:column;gap:9px}.breadcrumb{font-size:11px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}