/* roulang page: index */
:root{--ink:#172e2b;--muted:#64746d;--green:#184f42;--green-dark:#102a28;--accent:#d6ea9b;--paper:#fafbf7;--white:#fff;--line:#dfe5dc;--soft:#eef2e9;--radius:20px;--shadow:0 14px 45px rgba(23,46,43,.07);--width:1200px;--ease:220ms ease}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}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;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img{display:block;width:100%;height:auto}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.3}h2{font-size:clamp(26px,3.4vw,40px);letter-spacing:-1.2px;font-weight:650}h3{font-size:20px;font-weight:650}p{color:var(--muted)}ul{list-style:none;padding:0;margin:0}a,button{transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #89ad49;outline-offset:5px}a:active,button:active{transform:translateY(1px)}::selection{background:var(--accent);color:var(--ink)}.container{width:min(var(--width),calc(100% - 64px));margin-inline:auto}.section{padding:88px 0;border-bottom:1px solid var(--line)}.section-soft{background:var(--soft)}.section-dark{background:var(--green-dark);color:var(--white);border:0}.section-dark p{color:#b7cbc4}.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:2px;color:var(--green);margin-bottom:20px}.eyebrow:before{content:"";width:22px;height:2px;background:currentColor}.section-dark .eyebrow{color:var(--accent)}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:48px;margin-bottom:36px}.section-head>div{flex:1}.section-head>p{max-width:520px;flex:1}.section-intro{max-width:760px;margin-top:22px}.button{min-height:48px;padding:12px 23px;display:inline-flex;align-items:center;justify-content:center;gap:18px;border-radius:9px;border:1px solid transparent;background:var(--green);color:#fff;font-weight:600;font-size:14px}.button:hover{background:#22644f;box-shadow:0 7px 20px #123e4120;transform:translateY(-2px)}.button-light{background:var(--accent);color:var(--green-dark)}.button-light:hover{background:#e4f4b9}.button-outline{background:transparent;border-color:var(--line);color:var(--ink)}.button-outline:hover{background:var(--soft)}.text-link{display:inline-flex;align-items:center;gap:18px;font-size:14px;font-weight:650;color:var(--green)}.text-link:hover{gap:25px}.badge{display:inline-block;padding:4px 10px;background:var(--soft);border:1px solid var(--line);border-radius:5px;font-size:11px;color:var(--green);line-height:1.6}.site-header{position:sticky;top:0;z-index:50;background:rgba(250,251,247,.96);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav-shell{height:84px;display:flex;align-items:center;justify-content:space-between;gap:35px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--green);color:var(--accent);display:grid;place-items:center;font-size:22px;font-weight:800}.brand-name{font-size:23px;font-weight:750;letter-spacing:-1px}.brand-name small{font-size:12px;letter-spacing:1px;display:block;color:var(--muted);line-height:1.2;font-weight:500}.nav{display:flex;gap:8px;align-items:center;margin-left:auto}.nav>a{padding:11px 18px;font-size:14px;border-radius:8px;color:var(--muted)}.nav>a:hover,.nav>a.active{background:var(--soft);color:var(--green)}.nav>a.active{font-weight:700}.mega{position:relative}.mega summary{cursor:pointer;list-style:none;font-size:13px;display:flex;align-items:center;gap:18px;padding:12px 15px;border:1px solid var(--line);border-radius:8px}.mega summary::-webkit-details-marker{display:none}.mega summary:after{content:"+";font-size:20px;line-height:1}.mega[open] summary:after{content:"−"}.mega-panel{position:absolute;right:0;top:calc(100% + 17px);width:360px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);padding:22px;border-radius:14px}.mega-panel strong{display:block;font-size:17px}.mega-panel p{font-size:13px;margin:7px 0 16px}.mega-panel a{display:block;border-top:1px solid var(--line);padding:11px 0;font-size:14px}.mega-panel a:hover{color:var(--green);padding-left:5px}.hero{position:relative;isolation:isolate;min-height:650px;display:flex;align-items:center;background:var(--green-dark);overflow:hidden;color:#fff}.hero:before{content:"";position:absolute;inset:0;z-index:-2;background:url('/assets/images/0f7b10f3435b6ede.webp') center 45%/cover no-repeat;opacity:.24}.hero:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(10,34,30,.96),rgba(10,34,30,.73) 60%,rgba(10,34,30,.4))}.hero-content{padding:80px 0 44px;width:100%}.hero-topline{display:flex;justify-content:space-between;align-items:center;padding-bottom:24px;border-bottom:1px solid #ffffff26;margin-bottom:43px;font-size:12px;letter-spacing:2px;color:#c6d3cb}.hero h1{font-size:clamp(42px,6.6vw,78px);letter-spacing:-3px;max-width:950px;font-weight:650}.hero h1 span{color:var(--accent)}.hero-copy{max-width:810px;margin:27px 0;color:#c7d6ce;font-size:16px;line-height:2}.hero-actions{display:flex;align-items:center;gap:24px;margin-top:26px}.hero-note{font-size:12px;color:#b6c8bd}.check-strip{display:flex;gap:36px;padding-top:32px;margin-top:50px;border-top:1px solid #ffffff26;font-size:13px;color:#dce8df}.check-strip span:before{content:"✓";margin-right:10px;color:var(--accent)}.three-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.feature{padding:12px 28px 10px 0;border-right:1px solid var(--line)}.feature:last-child{border:0}.number{display:block;font-size:12px;letter-spacing:2px;color:var(--green);margin-bottom:25px}.feature p{margin-top:16px;font-size:14px}.matrix{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:18px}.matrix-card{padding:30px;border:1px solid var(--line);background:var(--white);border-radius:var(--radius);display:flex;flex-direction:column;align-items:flex-start;min-height:250px}.matrix-card.featured{background:var(--green);color:#fff;border-color:var(--green)}.matrix-card h3{margin:23px 0 12px}.matrix-card p{font-size:14px;margin-bottom:25px}.matrix-card.featured p{color:#cbdcd3}.matrix-card .text-link{margin-top:auto}.matrix-card.featured .text-link{color:var(--accent)}.matrix-card .badge{background:transparent}.matrix-card.featured .badge{color:var(--accent);border-color:#ffffff38}.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.post-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;min-height:265px;transition:transform var(--ease),box-shadow var(--ease)}.post-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.post-meta{display:flex;gap:12px;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted)}.post-card h3{font-size:20px;margin:23px 0 14px}.post-card h3 a:hover,.news-title:hover{color:var(--green)}.post-card p{font-size:14px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}.post-card .post-bottom{font-size:12px;font-weight:650;color:var(--green);margin-top:auto;padding-top:24px}.empty{padding:38px;border:1px dashed #b8c6b5;border-radius:var(--radius);font-size:14px;color:var(--muted);grid-column:1/-1;background:#ffffff70}.topic-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:26px}.topic{border-radius:var(--radius);overflow:hidden;background:var(--white);border:1px solid var(--line)}.topic-image{height:260px;overflow:hidden;background:#dae3d4}.topic-image img{height:100%;object-fit:cover;transition:transform .65s ease}.topic:hover img{transform:scale(1.04)}.topic-body{padding:28px 30px}.topic-body p{margin-top:12px;font-size:14px}.topic-body .badge{margin-bottom:16px}.news-layout{display:grid;grid-template-columns:1fr 310px;gap:46px}.news-row{padding:25px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:90px 1fr 24px;gap:22px;align-items:start}.news-row:first-child{padding-top:0}.news-row time{font-size:12px;color:var(--muted)}.news-title{font-size:19px;line-height:1.5;font-weight:650;display:block;margin-bottom:7px}.news-row p{font-size:13px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.news-arrow{font-size:22px;color:var(--green)}.news-aside{background:var(--soft);padding:28px;border-radius:var(--radius);align-self:start}.news-aside h3{margin:14px 0}.news-aside p{font-size:14px}.aside-list{margin-top:23px}.aside-list li{font-size:13px;padding:13px 0;border-top:1px solid #d4dece}.list-more{margin-top:26px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid #ffffff28;border-radius:var(--radius);margin-top:35px;overflow:hidden}.metric{padding:30px;border-right:1px solid #ffffff28}.metric:last-child{border:0}.metric strong{display:block;font-size:48px;line-height:1.25;font-weight:500;color:var(--accent);letter-spacing:-2px}.metric span{display:block;font-size:15px;margin:17px 0 8px}.metric p{font-size:12px}.metric-foot{font-size:12px;margin-top:20px}.concerns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.concern{display:flex;gap:23px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.concern-icon{flex:0 0 40px;width:40px;height:40px;border-radius:50%;background:var(--soft);color:var(--green);display:grid;place-items:center;font-size:18px}.concern h3{font-size:18px;margin-bottom:10px}.concern p{font-size:14px}.safety-layout{display:grid;grid-template-columns:.9fr 1.2fr;gap:90px}.safety-list li{display:grid;grid-template-columns:35px 1fr;gap:18px;padding:25px 0;border-bottom:1px solid var(--line)}.safety-list li:first-child{padding-top:0}.safety-list strong{font-size:17px;display:block;margin-bottom:6px}.safety-list p{font-size:14px}.safety-list .tick{font-size:20px;color:var(--green)}.statement{margin-top:28px;padding:20px;background:var(--soft);border-radius:10px;font-size:13px;border-left:3px solid var(--green)}.timeline{display:grid;grid-template-columns:repeat(3,1fr);margin-top:38px;gap:32px}.timeline-item{border-top:1px solid #b9c8ad;position:relative;padding:26px 0 0}.timeline-item:before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;background:var(--green)}.timeline-item small{font-size:12px;color:var(--green);letter-spacing:1px}.timeline-item h3{margin:13px 0}.timeline-item p{font-size:14px}.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;list-style:none;padding:23px 35px 23px 0;position:relative;font-size:17px;font-weight:600}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:5px;top:21px;font-size:23px;font-weight:400;color:var(--green)}.faq-list details[open] summary:after{content:"−"}.faq-list details[open] summary{color:var(--green)}.faq-list details p{padding:0 26px 24px 0;font-size:14px}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:start}.contact-copy h2{max-width:420px}.contact-copy p{margin-top:22px}.contact-note{font-size:12px!important;border-top:1px solid #ffffff26;padding-top:22px;margin-top:30px!important}.feedback-form{padding:30px;background:#ffffff09;border:1px solid #ffffff26;border-radius:var(--radius)}.form-field{margin-bottom:18px}.form-field label{display:block;font-size:13px;color:#d8e2db;margin-bottom:8px}.form-field select,.form-field textarea{display:block;width:100%;border:1px solid #ffffff35;border-radius:8px;padding:12px 14px;background:#183834;color:#fff;outline-offset:3px}.form-field textarea{resize:vertical;min-height:125px}.form-field textarea::placeholder{color:#a4bbb0}.feedback-form .button{width:100%}.form-help{font-size:12px;margin-top:15px}.form-status{font-size:13px;color:var(--accent);margin-top:14px;min-height:24px}.site-footer{background:#0b211f;color:#c9d6cf;padding:54px 0 24px}.footer-top{display:flex;justify-content:space-between;gap:40px;padding-bottom:34px;border-bottom:1px solid #ffffff1f}.site-footer .brand-name{color:#fff}.site-footer .brand-name small{color:#9bb3a5}.footer-description{max-width:520px;color:#a3b9ae;font-size:13px;margin-top:18px}.footer-links{display:flex;flex-wrap:wrap;align-content:flex-start;gap:22px;font-size:13px;padding-top:10px}.footer-links a:hover{color:var(--accent)}.footer-bottom{display:flex;justify-content:space-between;gap:24px;padding-top:23px;font-size:11px;color:#8fa89b}.footer-bottom p{color:inherit}.noscript-note{padding:12px;background:var(--soft);color:var(--ink);font-size:13px}.skip-link{position:fixed;left:20px;top:-90px;z-index:100;background:var(--accent);color:var(--ink);padding:10px 20px;border-radius:8px}.skip-link:focus{top:10px}
@media(min-width:1025px){.hero-content{animation:rise .7s ease both}@keyframes rise{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.section{padding:65px 0}.nav-shell{gap:20px}.nav>a{padding:10px 12px}.hero{min-height:620px}.matrix-card{padding:24px}.post-card{padding:23px}.news-layout{grid-template-columns:1fr 260px;gap:28px}.safety-layout,.contact-grid{gap:45px}.metric{padding:24px 20px}.faq-layout{gap:40px}.hero h1{font-size:62px}.brand-name{font-size:21px}}
@media(max-width:768px){.container{width:calc(100% - 36px)}.nav-shell{height:auto;min-height:78px;flex-wrap:wrap;padding:15px 0;gap:12px}.brand{margin-right:auto}.nav{order:3;width:100%;border-top:1px solid var(--line);padding-top:10px;margin:0}.nav>a{flex:1;text-align:center;font-size:13px}.mega-panel{width:min(340px,calc(100vw - 36px));top:calc(100% + 12px)}.mega summary{font-size:12px;padding:8px 12px}.hero-content{padding:45px 0 32px}.hero{min-height:auto}.hero-topline{margin-bottom:32px;font-size:10px}.hero h1{font-size:48px;letter-spacing:-2px}.hero-copy{font-size:15px}.check-strip{flex-wrap:wrap;gap:12px 22px;margin-top:35px;padding-top:23px;font-size:12px}.section-head{display:block;margin-bottom:28px}.section-head>p{margin-top:20px;max-width:none}.three-grid{gap:22px}.feature{padding-right:15px}.feature h3{font-size:18px}.matrix{grid-template-columns:1fr 1fr}.matrix-card.featured{grid-column:1/-1;min-height:210px}.post-grid{grid-template-columns:1fr 1fr}.post-grid .post-card:last-child{grid-column:1/-1}.topic-grid{grid-template-columns:1fr 1fr;gap:18px}.topic-image{height:190px}.topic-body{padding:22px}.news-layout{grid-template-columns:1fr}.news-aside{display:none}.metrics{grid-template-columns:1fr 1fr}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid #ffffff28}.concerns{grid-template-columns:1fr}.safety-layout,.faq-layout,.contact-grid{grid-template-columns:1fr;gap:32px}.timeline{gap:22px}.footer-top{flex-direction:column;gap:20px}.footer-bottom{flex-direction:column;gap:9px}.section-intro{font-size:14px}}
@media(max-width:520px){.section{padding:52px 0}.hero-topline span:last-child{display:none}.hero h1{font-size:39px;letter-spacing:-1.7px}.hero-copy{font-size:14px}.hero-actions{align-items:flex-start;flex-direction:column;gap:14px}.hero-note{font-size:11px}.check-strip{gap:9px 17px}.eyebrow{font-size:11px;margin-bottom:15px}.three-grid,.matrix,.post-grid,.topic-grid,.timeline{grid-template-columns:1fr}.feature{padding:20px 0;border-right:0;border-bottom:1px solid var(--line)}.feature .number{margin-bottom:12px}.feature p{margin-top:11px}.matrix-card.featured{grid-column:auto}.matrix-card{min-height:220px}.post-grid .post-card:last-child{grid-column:auto}.topic-image{height:220px}.news-row{grid-template-columns:1fr 20px;gap:8px}.news-row time{grid-column:1/-1}.news-row .news-arrow{grid-column:2;grid-row:2}.news-title{font-size:18px}.metric{padding:24px 17px}.metric strong{font-size:40px}.metric span{font-size:14px}.concern{padding:23px 20px;gap:15px}.timeline-item{padding-bottom:10px}.feedback-form{padding:22px}.footer-links{gap:17px}.brand-name{font-size:20px}.brand-mark{width:38px;height:38px}.hero .button{width:100%}.hero-actions{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

/* roulang page: article */
:root{--ink:#172e2b;--muted:#64746d;--green:#184f42;--green-dark:#102a28;--accent:#d6ea9b;--paper:#fafbf7;--white:#fff;--line:#dfe5dc;--soft:#eef2e9;--radius:20px;--shadow:0 14px 45px rgba(23,46,43,.07);--width:1200px;--ease:220ms ease}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:106px}
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;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,figure{margin:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
img{display:block;width:100%;height:auto}
a,button{transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #89ad49;outline-offset:5px}
a:active,button:active{transform:translateY(1px)}
.container{width:min(var(--width),calc(100% - 64px));margin-inline:auto}
.section{padding:72px 0;border-bottom:1px solid var(--line)}
.section-soft{background:var(--soft)}
.section-dark{background:var(--green-dark);color:var(--white);border:0}
.section-dark p{color:#b7cbc4}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:2px;color:var(--green);margin-bottom:20px}
.eyebrow:before{content:"";width:22px;height:2px;background:currentColor}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:30px}
.section-head h2{font-size:30px;line-height:1.4;letter-spacing:-1px}
.section-head p{max-width:430px;color:var(--muted);font-size:14px}
.button{min-height:48px;padding:12px 23px;display:inline-flex;align-items:center;justify-content:center;gap:18px;border-radius:9px;border:1px solid transparent;background:var(--green);color:#fff;font-weight:600;font-size:14px}
.button:hover{background:#22644f;box-shadow:0 7px 20px #123e4120;transform:translateY(-2px)}
.button-light{background:var(--accent);color:var(--green-dark)}
.button-light:hover{background:#e4f4b9}
.button-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.button-outline:hover{background:var(--soft)}
.text-link{display:inline-flex;align-items:center;gap:18px;font-size:14px;font-weight:650;color:var(--green)}
.text-link:hover{color:#2b775e}
.badge{display:inline-block;padding:4px 10px;background:var(--soft);border:1px solid var(--line);border-radius:5px;font-size:11px;color:var(--green);line-height:1.6}
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,251,247,.96);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-shell{height:84px;display:flex;align-items:center;justify-content:space-between;gap:35px}
.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--green);color:var(--accent);display:grid;place-items:center;font-size:22px;font-weight:800}
.brand-name{font-size:23px;font-weight:750;letter-spacing:-1px}
.brand-name small{font-size:12px;letter-spacing:1px;display:block;color:var(--muted);line-height:1.2;font-weight:500}
.nav{display:flex;gap:8px;align-items:center;margin-left:auto}
.nav>a{padding:11px 18px;font-size:14px;border-radius:8px;color:var(--muted)}
.nav>a:hover,.nav>a.active{background:var(--soft);color:var(--green)}
.nav>a.active{font-weight:700}
.mega{position:relative}
.mega summary{cursor:pointer;list-style:none;font-size:13px;display:flex;align-items:center;gap:18px;padding:12px 15px;border:1px solid var(--line);border-radius:8px}
.mega summary::-webkit-details-marker{display:none}
.mega summary:after{content:"+";font-size:20px;line-height:1}
.mega[open] summary:after{content:"−"}
.mega summary:hover{background:var(--soft)}
.mega-panel{position:absolute;right:0;top:calc(100% + 17px);width:360px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);padding:22px;border-radius:14px}
.mega-panel strong{display:block;font-size:17px}
.mega-panel p{font-size:13px;margin:7px 0 16px;color:var(--muted)}
.mega-panel a{display:block;border-top:1px solid var(--line);padding:11px 0;font-size:14px}
.mega-panel a:hover{color:var(--green);padding-left:5px}
.article-hero{padding:48px 0 56px;border-bottom:1px solid var(--line);background:var(--soft)}
.breadcrumb{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:12px;margin-bottom:36px}
.breadcrumb a:hover{color:var(--green)}
.hero-grid{display:grid;grid-template-columns:minmax(0,850px) 1fr;gap:60px;align-items:end}
.article-hero h1{font-size:clamp(30px,4vw,50px);line-height:1.35;letter-spacing:-1.5px;overflow-wrap:anywhere;font-weight:650;margin-bottom:22px}
.article-summary{font-size:15px;line-height:1.95;color:var(--muted);max-width:790px;overflow-wrap:anywhere}
.article-meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;font-size:12px;color:var(--muted)}
.hero-stamp{border-left:1px solid #bdcbb9;padding-left:24px}
.hero-stamp strong{font-size:30px;letter-spacing:-1px;display:block;font-weight:650}
.hero-stamp span{font-size:12px;color:var(--muted)}
.reading-layout{display:grid;grid-template-columns:minmax(0,720px) minmax(220px,1fr);gap:72px;align-items:start}
.reading-main{min-width:0}
.article-body{font-size:16px;line-height:2.05;overflow-wrap:anywhere}
.article-body> :first-child{margin-top:0}
.article-body h2{font-size:27px;line-height:1.5;margin:40px 0 18px;letter-spacing:-.5px}
.article-body h3{font-size:21px;line-height:1.5;margin:28px 0 14px}
.article-body p{margin:0 0 22px}
.article-body a{color:var(--green);text-decoration:underline;text-underline-offset:4px}
.article-body ul,.article-body ol{padding-left:24px;margin:20px 0}
.article-body li{padding-left:5px;margin:9px 0}
.article-body blockquote{margin:28px 0;padding:22px 26px;background:var(--soft);border-left:3px solid var(--green);border-radius:0 12px 12px 0}
.article-body blockquote p:last-child{margin:0}
.article-body img{border-radius:14px;margin:26px 0;max-width:100%;height:auto}
.article-body table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-body th,.article-body td{padding:12px 16px;border:1px solid var(--line);text-align:left}
.article-body th{background:var(--soft)}
.article-body pre{max-width:100%;overflow-x:auto;padding:20px;border-radius:12px;background:var(--soft)}
.article-end{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:11px;letter-spacing:2px;margin-top:42px}
.article-end:before,.article-end:after{content:"";height:1px;background:var(--line);flex:1}
.reading-sidebar{position:sticky;top:115px}
.side-card{border:1px solid var(--line);background:var(--white);border-radius:var(--radius);padding:25px;margin-bottom:20px}
.side-card h2{font-size:18px;margin-bottom:12px}
.side-card p{font-size:13px;color:var(--muted)}
.side-list{list-style:none;padding:0;margin:18px 0 0}
.side-list li{padding:12px 0;border-top:1px solid var(--line);font-size:13px;display:flex;justify-content:space-between;gap:12px}
.side-list a:hover{color:var(--green)}
.side-note{background:var(--green-dark);color:var(--white);border:0}
.side-note .badge{color:var(--accent);background:transparent;border-color:#ffffff30;margin-bottom:16px}
.side-note p{color:#b7cbc4}
.editorial-figure{margin-top:42px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}
.editorial-figure img{aspect-ratio:16/9;object-fit:cover;transition:transform 500ms ease}
.editorial-figure:hover img{transform:scale(1.02)}
.editorial-figure figcaption{position:relative;background:var(--white);padding:16px 22px;font-size:12px;color:var(--muted);border-top:1px solid var(--line)}
.notice-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.notice-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);transition:box-shadow var(--ease),transform var(--ease)}
.notice-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.notice-card .number{display:block;font-size:12px;letter-spacing:2px;color:var(--green);margin-bottom:22px}
.notice-card h3{font-size:20px;margin-bottom:12px}
.notice-card p{font-size:14px;color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:1fr 2fr;gap:64px}
.faq-heading h2{font-size:30px;line-height:1.4;margin-bottom:18px}
.faq-heading p{color:var(--muted);font-size:14px;max-width:280px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 0;font-size:16px;font-weight:650}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";font-weight:400;font-size:24px;color:var(--green)}
.faq-item[open] summary:after{content:"−"}
.faq-item summary:hover{color:var(--green)}
.faq-item p{padding:0 30px 24px 0;color:var(--muted);font-size:14px}
.cta-row{display:flex;justify-content:space-between;align-items:center;gap:40px}
.cta-row h2{font-size:32px;line-height:1.45;margin-bottom:12px}
.cta-row p{font-size:14px;max-width:720px}
.cta-row .button{flex-shrink:0}
.empty-state{min-height:55vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:25px;text-align:center;padding:80px 24px}
.empty-state h1{font-size:36px;line-height:1.4}
.site-footer{background:var(--paper);padding:58px 0 22px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr;gap:80px;padding-bottom:38px}
.footer-description{font-size:13px;color:var(--muted);max-width:580px;margin-top:22px}
.footer-links{display:flex;gap:24px;justify-content:flex-end;flex-wrap:wrap;align-content:start;padding-top:14px;font-size:13px}
.footer-links a:hover{color:var(--green);text-decoration:underline;text-underline-offset:5px}
.footer-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;gap:24px;color:var(--muted);font-size:11px}
@media(min-width:1025px){.mega:not([open]):hover .mega-panel{display:block}.mega-panel:before{content:"";position:absolute;height:18px;bottom:100%;left:0;right:0}}
@media(max-width:1024px){.nav-shell{gap:20px}.reading-layout{gap:36px;grid-template-columns:minmax(0,1fr) 240px}.hero-grid{gap:32px}.hero-stamp strong{font-size:24px}.faq-layout{gap:36px}.footer-top{gap:40px}.section{padding:60px 0}}
@media(max-width:768px){.container{width:calc(100% - 40px)}.nav-shell{height:auto;min-height:84px;flex-wrap:wrap;gap:15px;padding-top:16px;padding-bottom:12px}.brand-name{font-size:21px}.brand-name small{font-size:10px}.nav{order:3;width:100%;margin:0;gap:6px;border-top:1px solid var(--line);padding-top:10px}.nav>a{padding:7px 14px}.mega{margin-left:auto}.mega-panel{width:min(360px,calc(100vw - 40px))}.hero-grid{grid-template-columns:1fr}.hero-stamp{display:none}.article-hero{padding:30px 0 36px}.breadcrumb{margin-bottom:25px}.reading-layout{grid-template-columns:1fr;gap:32px}.reading-main{max-width:720px}.reading-sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}.side-card{margin:0}.faq-layout{grid-template-columns:1fr;gap:25px}.faq-heading p{max-width:none}.section-head{align-items:start;flex-direction:column;gap:12px}.cta-row{align-items:flex-start;flex-direction:column;gap:24px}.footer-top{grid-template-columns:1fr;gap:25px}.footer-links{justify-content:flex-start;padding:0}.footer-bottom{flex-direction:column;gap:7px}.section{padding:48px 0}html{scroll-padding-top:155px}}
@media(max-width:520px){.container{width:calc(100% - 32px)}.brand{gap:9px}.brand-mark{width:36px;height:36px;font-size:20px}.brand-name{font-size:20px}.brand-name small{letter-spacing:0}.mega summary{padding:9px 11px;gap:10px;font-size:12px}.nav>a{font-size:13px}.article-hero h1{font-size:30px;letter-spacing:-.7px}.article-summary{font-size:14px}.article-meta{gap:10px 15px}.notice-grid,.reading-sidebar{grid-template-columns:1fr}.article-body{font-size:15px}.article-body h2{font-size:24px}.section-head h2,.faq-heading h2,.cta-row h2{font-size:26px}.notice-card{padding:23px}.faq-item summary{font-size:15px;gap:15px}.editorial-figure figcaption{padding:13px 16px}.footer-links{gap:16px}.button{width:100%}.footer-bottom{overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang page: category1 */
:root{--ink:#172e2b;--muted:#64746d;--green:#184f42;--green-dark:#102a28;--accent:#d6ea9b;--paper:#fafbf7;--white:#fff;--line:#dfe5dc;--soft:#eef2e9;--radius:20px;--shadow:0 14px 45px rgba(23,46,43,.07);--width:1200px;--ease:220ms ease}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:105px}
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;-webkit-font-smoothing:antialiased}
h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35}h2{font-size:clamp(27px,3.3vw,40px);letter-spacing:-1px;font-weight:650}h3{font-size:20px;font-weight:650}p{color:var(--muted)}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img{display:block;width:100%;height:auto}a,button{transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #89ad49;outline-offset:5px}a:active,button:active{transform:translateY(1px)}
.container{width:min(var(--width),calc(100% - 64px));margin-inline:auto}.section{padding:88px 0;border-bottom:1px solid var(--line)}.section-soft{background:var(--soft)}.section-dark{background:var(--green-dark);color:var(--white);border:0}.section-dark p{color:#b7cbc4}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:2px;color:var(--green);margin-bottom:20px}.eyebrow:before{content:"";width:22px;height:2px;background:currentColor}.section-dark .eyebrow{color:var(--accent)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:48px;margin-bottom:36px}.section-head>div{flex:1}.section-head>p{max-width:520px;flex:1}.section-intro{max-width:760px;margin-top:22px}
.button{min-height:48px;padding:12px 23px;display:inline-flex;align-items:center;justify-content:center;gap:18px;border-radius:9px;border:1px solid transparent;background:var(--green);color:#fff;font-weight:600;font-size:14px}.button:hover{background:#22644f;box-shadow:0 7px 20px #123e4120;transform:translateY(-2px)}.button-light{background:var(--accent);color:var(--green-dark)}.button-light:hover{background:#e4f4b9}.button-outline{background:transparent;border-color:var(--line);color:var(--ink)}.button-outline:hover{background:var(--soft)}.text-link{display:inline-flex;align-items:center;gap:18px;font-size:14px;font-weight:650;color:var(--green)}.text-link:hover{gap:25px}.badge{display:inline-block;padding:4px 10px;background:var(--soft);border:1px solid var(--line);border-radius:5px;font-size:11px;color:var(--green);line-height:1.6}
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,251,247,.96);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav-shell{height:84px;display:flex;align-items:center;justify-content:space-between;gap:35px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--green);color:var(--accent);display:grid;place-items:center;font-size:22px;font-weight:800}.brand-name{font-size:23px;font-weight:750;letter-spacing:-1px}.brand-name small{font-size:12px;letter-spacing:1px;display:block;color:var(--muted);line-height:1.2;font-weight:500}.nav{display:flex;gap:8px;align-items:center;margin-left:auto}.nav>a{padding:11px 18px;font-size:14px;border-radius:8px;color:var(--muted)}.nav>a:hover,.nav>a.active{background:var(--soft);color:var(--green)}.nav>a.active{font-weight:700}.mega{position:relative}.mega summary{cursor:pointer;list-style:none;font-size:13px;display:flex;align-items:center;gap:18px;padding:12px 15px;border:1px solid var(--line);border-radius:8px}.mega summary::-webkit-details-marker{display:none}.mega summary:after{content:"+";font-size:20px;line-height:1}.mega[open] summary:after{content:"−"}.mega-panel{position:absolute;right:0;top:calc(100% + 17px);width:360px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);padding:22px;border-radius:14px}.mega-panel strong{display:block;font-size:17px}.mega-panel p{font-size:13px;margin:7px 0 16px}.mega-panel a{display:block;border-top:1px solid var(--line);padding:11px 0;font-size:14px}.mega-panel a:hover{color:var(--green);padding-left:5px}
.access-hero{padding:58px 0 0;overflow:hidden;border-bottom:1px solid var(--line)}.breadcrumb{font-size:12px;color:var(--muted);display:flex;gap:12px;margin-bottom:35px}.breadcrumb a:hover{color:var(--green)}.hero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:80px;align-items:center;padding-bottom:55px}.hero-title{font-size:clamp(40px,5.1vw,65px);letter-spacing:-2px;font-weight:650;max-width:750px}.hero-title span{display:block;color:var(--green);margin-top:8px}.hero-lead{max-width:610px;font-size:16px;margin:24px 0 27px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap}.hero-caption{font-size:12px;margin-top:22px}.portrait{position:relative;height:390px;max-width:290px;width:100%;justify-self:center;border-radius:28px;overflow:hidden;background:var(--green-dark);box-shadow:0 22px 55px #172e2b24;transform:rotate(3deg)}.portrait img{height:100%;object-fit:cover;opacity:.67;transition:transform .7s ease}.portrait:hover img{transform:scale(1.045)}.portrait:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#102a28 0%,transparent 80%)}.portrait-label{position:absolute;inset:22px 22px auto;z-index:1;color:#fff;font-size:11px;letter-spacing:2px}.portrait-copy{position:absolute;bottom:25px;left:25px;right:20px;z-index:1;color:#fff}.portrait-copy strong{display:block;font-size:29px;line-height:1.4}.portrait-copy span{color:var(--accent);font-size:12px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);padding:25px 0 29px}.metric{padding:0 28px;border-right:1px solid var(--line)}.metric:first-child{padding-left:0}.metric:last-child{border:0}.metric strong{display:block;font-size:27px;font-weight:650;line-height:1.5}.metric small{color:var(--muted);font-size:12px}
.matrix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.matrix-card{padding:29px;border:1px solid var(--line);background:var(--white);border-radius:var(--radius);transition:box-shadow var(--ease),transform var(--ease)}.matrix-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}.matrix-card h3{margin:20px 0 10px}.matrix-card p{font-size:14px}.matrix-card.featured{background:var(--green);color:#fff;border-color:var(--green)}.matrix-card.featured p{color:#cbdcd3}.matrix-card.featured .badge{color:var(--accent);background:transparent;border-color:#ffffff38}
.compare-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}.compare-intro p{margin-top:20px}.compare-panels{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare-card{border-radius:var(--radius);border:1px solid var(--line);padding:26px;background:var(--white)}.compare-card.verified{background:var(--soft)}.compare-card h3{font-size:18px;margin:12px 0 21px}.clean-list{padding:0;margin:0;list-style:none}.clean-list li{position:relative;padding:13px 0 13px 17px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.clean-list li:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--green);position:absolute;left:0;top:24px}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);margin-top:38px;gap:25px}.timeline-item{border-top:1px solid #ffffff38;padding-top:26px;position:relative}.timeline-item:before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;background:var(--accent)}.timeline-item small{color:var(--accent);font-size:12px}.timeline-item h3{font-size:20px;margin:16px 0 12px}.timeline-item p{font-size:14px}.notice-strip{margin-top:38px;padding:18px 22px;border:1px solid #ffffff26;border-radius:12px;color:#b7cbc4;font-size:13px}
.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center}.security-image{height:410px;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}.security-list{margin-top:25px}.security-item{padding:19px 0;border-top:1px solid var(--line)}.security-item h3{font-size:17px;margin-bottom:6px}.security-item p{font-size:14px}
.answer-row{display:grid;grid-template-columns:220px 1fr;gap:35px;border-top:1px solid var(--line);padding:22px 0}.answer-row:last-child{border-bottom:1px solid var(--line)}.answer-row h3{font-size:17px}.answer-row p{font-size:14px;max-width:750px}.answer-row .badge{margin-left:10px;vertical-align:middle}
.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:75px}.faq-intro p{margin-top:20px}.faq-list details{border-bottom:1px solid var(--line);padding:0 0 21px;margin-bottom:21px}.faq-list summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;font-size:16px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";color:var(--green);font-size:23px;line-height:1.3}.faq-list details[open] summary:after{content:"−"}.faq-list details p{padding-top:15px;font-size:14px}.faq-list summary:hover{color:var(--green)}
.closing{padding:60px 0}.closing-box{border-radius:24px;background:var(--green);padding:45px 48px;display:flex;justify-content:space-between;align-items:center;gap:40px;color:#fff}.closing-box h2{font-size:30px}.closing-box p{color:#cbdcd3;margin-top:13px;max-width:690px;font-size:14px}.closing-box .button{flex-shrink:0}
.site-footer{border-top:1px solid var(--line);background:var(--soft);padding:55px 0 22px}.footer-top{display:flex;justify-content:space-between;gap:70px;padding-bottom:35px}.footer-description{font-size:13px;max-width:620px;margin-top:22px}.footer-links{display:flex;gap:23px;flex-wrap:wrap;align-content:flex-start;padding-top:12px;font-size:13px}.footer-links a:hover{color:var(--green);text-decoration:underline;text-underline-offset:5px}.footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:12px}
@media(min-width:769px){.mega:not([open]):hover .mega-panel{display:block}.mega-panel{animation:panel-in .2s ease}@keyframes panel-in{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}}
@media(max-width:1024px){.nav-shell{gap:20px}.hero-grid{gap:35px}.hero-title{font-size:48px}.compare-layout{gap:35px;grid-template-columns:1fr}.security-grid{gap:35px}.faq-layout{gap:35px}.timeline{gap:18px}.footer-top{gap:30px}.footer-links{max-width:240px}}
@media(max-width:768px){.container{width:calc(100% - 40px)}.section{padding:58px 0}.nav-shell{height:auto;min-height:82px;flex-wrap:wrap;padding-top:15px;padding-bottom:12px;gap:12px}.brand-name{font-size:21px}.mega{margin-left:auto}.mega summary{padding:8px 11px}.nav{order:3;width:100%;margin:0;border-top:1px solid var(--line);padding-top:10px;gap:8px}.nav>a{padding:8px 14px}.mega-panel{width:min(350px,calc(100vw - 40px))}.hero-grid{grid-template-columns:1fr .6fr;gap:25px}.hero-title{font-size:38px;letter-spacing:-1px}.hero-lead{font-size:14px}.portrait{height:320px;transform:rotate(2deg)}.portrait-copy{left:18px}.portrait-copy strong{font-size:24px}.metric{padding:0 14px}.metric strong{font-size:21px}.section-head{display:block}.section-head>p{margin-top:20px}.timeline{grid-template-columns:1fr 1fr;gap:30px}.security-grid{grid-template-columns:1fr}.security-image{height:300px}.faq-layout{grid-template-columns:1fr;gap:30px}.closing-box{padding:30px;align-items:flex-start;flex-direction:column;gap:25px}.footer-top{flex-direction:column;gap:20px}.footer-links{max-width:none}.footer-bottom{flex-direction:column;gap:5px}}
@media(max-width:520px){.container{width:calc(100% - 32px)}.access-hero{padding-top:28px}.breadcrumb{margin-bottom:26px}.hero-grid{grid-template-columns:1fr;padding-bottom:35px}.hero-title{font-size:39px}.hero-lead{margin-top:20px}.portrait{height:270px;max-width:none;transform:none;border-radius:20px}.portrait img{object-position:center 40%}.portrait-copy strong{font-size:27px}.portrait-label{inset:18px 20px auto}.metrics{grid-template-columns:1fr 1fr;gap:20px 0;padding:25px 0}.metric{padding-left:20px}.metric:nth-child(odd){padding-left:0}.metric:nth-child(2){border:0}.metric strong{font-size:22px}.matrix-grid,.compare-panels{grid-template-columns:1fr}.matrix-card{padding:24px}.section-head{margin-bottom:28px}.timeline{gap:30px 20px}.timeline-item h3{font-size:18px}.timeline-item p{font-size:13px}.answer-row{grid-template-columns:1fr;gap:9px}.closing-box{padding:28px 24px}.closing-box h2{font-size:25px}.footer-links{gap:19px}.footer-description{font-size:12px}.hero-actions .button{flex:1;padding:11px 15px}.security-image{height:250px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}