/* roulang page: index */
:root{--ink:#132d40;--text:#263d4c;--muted:#6d7b83;--brand:#185b65;--accent:#c3a574;--paper:#fff;--bg:#f4f6f6;--line:#dfe6e8;--radius:16px;--shadow:0 15px 45px rgba(19,45,64,.07);--space:88px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--text);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,ul{margin:0}h1,h2,h3{font-family:inherit;color:var(--ink);font-weight:650}h1{font-size:clamp(40px,5.7vw,76px);line-height:1.2;letter-spacing:-2px}h2{font-size:clamp(27px,3vw,38px);line-height:1.4;letter-spacing:-.7px}h3{font-size:19px;line-height:1.5}a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s,box-shadow .2s}a:hover{color:var(--brand)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}a:active,.button:active{transform:translateY(1px)}img{display:block;max-width:100%;object-fit:cover}button,input{font:inherit}button{cursor:pointer}.grid-container{max-width:1240px;padding-left:32px;padding-right:32px}.section{padding:var(--space) 0;position:relative}.tint{background:var(--bg)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:44px;margin-bottom:34px}.section-head .intro{max-width:550px}.intro{color:var(--muted);font-size:15px;line-height:1.95}.eyebrow{display:block;color:var(--brand);font-size:12px;font-weight:700;letter-spacing:2px;margin-bottom:14px}.section-head h2{min-width:260px}.line-link{font-weight:600;font-size:14px;display:inline-flex;gap:18px;align-items:center;white-space:nowrap}.line-link:after{content:"↗";color:var(--brand)}.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:16px 25px;margin:0;background:var(--brand);color:#fff;border:1px solid var(--brand);border-radius:7px;font-size:14px;font-weight:600;line-height:1.5;transition:.2s}.button:hover,.button:focus{background:var(--ink);border-color:var(--ink);color:white;box-shadow:0 8px 20px #132d401c}.badge-label{display:inline-block;font-size:11px;line-height:1.5;letter-spacing:1px;padding:6px 10px;border:1px solid var(--line);border-radius:4px;color:var(--brand);background:#fff}
.top-strip{background:var(--ink);color:#dce5e9;font-size:11px;letter-spacing:1px}.top-strip .grid-container{display:flex;justify-content:space-between;padding-top:7px;padding-bottom:7px}.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:85px;gap:30px}.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}.brand-mark{width:40px;height:40px;border:1px solid var(--ink);display:grid;place-items:center;border-radius:7px;font-size:20px;font-weight:700;background:var(--ink);color:white}.brand-name{font-size:23px;font-weight:750;letter-spacing:1px}.brand-sub{display:block;font-size:10px;letter-spacing:3px;color:var(--muted);line-height:1.3}.main-nav{display:flex;gap:34px;align-items:center;align-self:stretch}.main-nav a{position:relative;display:flex;align-items:center;font-size:14px;padding:0 4px}.main-nav a:after{content:"";position:absolute;bottom:0;left:4px;right:4px;height:3px;background:transparent}.main-nav a.active{font-weight:700;color:var(--brand)}.main-nav a.active:after,.main-nav a:hover:after{background:var(--brand)}.header-note{font-size:11px;color:var(--muted);padding-left:22px;border-left:1px solid var(--line)}.menu-toggle{display:none;border:1px solid var(--line);border-radius:5px;padding:7px 12px;background:white;color:var(--ink)}
.hero{min-height:720px;display:flex;align-items:center;overflow:hidden;background:#132d40;color:#fff}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,28,42,.95),rgba(9,28,42,.79) 55%,rgba(9,28,42,.45)),url('/assets/images/a80670321dfa4773.png') center/cover no-repeat;transform:scale(1.02)}.hero .grid-container{position:relative;width:100%}.hero-copy{max-width:820px;border-left:2px solid var(--accent);padding:6px 0 6px 34px}.hero .eyebrow{color:#d9c49f}.hero h1{color:white;margin-bottom:26px}.hero h1 span{font-weight:350;color:#d5e0e5}.hero .lead{max-width:715px;color:#ced8de;font-size:16px;line-height:2;margin-bottom:25px}.hero-points{display:flex;gap:24px;flex-wrap:wrap;list-style:none;color:#e5eaed;font-size:13px;margin-bottom:30px}.hero-points li:before{content:"✓";color:var(--accent);margin-right:9px}.hero .button{background:#eadcc4;border-color:#eadcc4;color:var(--ink)}.hero .button:hover{background:#fff;border-color:#fff}.trust-line{margin-top:30px;display:flex;gap:20px;font-size:11px;color:#aabcc7}.hero-index{position:absolute;right:34px;bottom:0;writing-mode:vertical-rl;letter-spacing:4px;font-size:10px;color:#9eafb9}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.feature{padding:30px 30px 32px 0}.feature+.feature{border-left:1px solid var(--line);padding-left:30px}.number{font-size:12px;color:var(--brand);display:block;margin-bottom:20px;font-weight:700;letter-spacing:2px}.feature p{font-size:14px;color:var(--muted);margin-top:14px}.matrix{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:18px}.matrix-item{border:1px solid var(--line);background:#fff;border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;align-items:flex-start;min-height:235px}.matrix-item.primary{background:var(--ink);color:#c9d6de;border-color:var(--ink)}.matrix-item.primary h3{color:#fff}.matrix-item.primary .badge-label{background:transparent;color:#e3d2b4;border-color:#587080}.matrix-item h3{margin:24px 0 10px}.matrix-item p{font-size:14px;color:var(--muted)}.matrix-item.primary p{color:#becdd7}.matrix-item .line-link{margin-top:23px;color:#fff}.matrix-item.primary:hover{background:#1c3e51;transform:translateY(-3px)}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.news-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:white;transition:transform .25s,box-shadow .25s}.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.cover{overflow:hidden;height:195px;background:var(--bg)}.cover img{width:100%;height:100%;transition:transform .6s}.news-card:hover .cover img{transform:scale(1.045)}.news-body{padding:25px}.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:var(--muted);margin-bottom:15px}.news-card h3{font-size:19px;margin-bottom:12px;overflow-wrap:anywhere}.excerpt{color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.news-bottom{display:block;border-top:1px solid var(--line);padding-top:15px;margin-top:22px;font-size:12px;font-weight:600;color:var(--brand)}.empty-state{padding:32px;border:1px dashed #bccbd0;border-radius:12px;color:var(--muted);font-size:14px;background:#fff;grid-column:1/-1}
.topic-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:46px;align-items:center}.topic-image{border-radius:var(--radius);position:relative;overflow:hidden;min-height:410px;background:var(--ink)}.topic-image img{width:100%;height:410px;opacity:.75}.topic-image:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(8,27,39,.8))}.image-caption{position:absolute;bottom:25px;left:28px;right:28px;color:#fff;z-index:1}.image-caption strong{font-size:25px;display:block;margin-top:8px}.topic-copy .intro{margin:20px 0 25px}.topic-row{display:grid;grid-template-columns:35px 1fr;gap:15px;padding:20px 0;border-top:1px solid var(--line)}.topic-row span{color:var(--accent);font-size:12px;font-weight:700;padding-top:4px}.topic-row h3{font-size:17px}.topic-row p{font-size:13px;color:var(--muted);margin-top:7px}
.feed-layout{display:grid;grid-template-columns:1fr 300px;gap:45px}.feed{border-top:1px solid var(--line)}.feed-item{display:grid;grid-template-columns:88px 1fr 24px;gap:20px;padding:27px 0;border-bottom:1px solid var(--line)}.feed-item:hover h3{color:var(--brand)}.feed-item time{font-size:12px;color:var(--muted);padding-top:5px}.feed-item h3{font-size:18px;margin-bottom:8px}.feed-item p{font-size:13px;color:var(--muted)}.feed-arrow{font-size:22px;color:var(--brand)}.editor-note{background:#eaf0ef;border-radius:12px;padding:28px;align-self:start}.editor-note h3{margin:18px 0 15px}.editor-note p{color:#657773;font-size:14px}.editor-note ul{list-style:none;margin-top:24px}.editor-note li{padding:12px 0;border-top:1px solid #d2dedd;font-size:13px}
.metrics{background:var(--ink);color:#c1ced6}.metrics h2{color:#fff}.metrics .eyebrow{color:var(--accent)}.metrics .intro{color:#b4c3cc}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:44px}.metric{border-left:1px solid #3a5263;padding:0 25px}.metric:first-child{padding-left:0;border:0}.metric strong{display:block;color:#e7d8be;font-size:44px;font-weight:350;line-height:1.3;margin-bottom:15px}.metric h3{color:#fff;font-size:16px;margin-bottom:10px}.metric p{font-size:13px;line-height:1.9}
.concern-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.concern-layout .intro{margin-top:22px}.concern-list{list-style:none;counter-reset:concern}.concern-list li{padding:24px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:40px 1fr;gap:16px;counter-increment:concern}.concern-list li:first-child{padding-top:0}.concern-list li:before{content:"0" counter(concern);font-size:12px;color:var(--brand);padding-top:4px}.concern-list p{font-size:14px;color:var(--muted);margin-top:9px}
.safety-band{display:grid;grid-template-columns:1fr 1.4fr;gap:50px;padding:38px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.safety-band h2{font-size:28px}.safety-copy{display:grid;grid-template-columns:1fr 1fr;gap:27px}.safety-copy h3{font-size:16px;margin-bottom:10px}.safety-copy p{font-size:13px;color:var(--muted)}.safety-title .intro{margin-top:17px;font-size:14px}.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.faq-layout .intro{margin-top:20px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:22px 0}summary{list-style:none;cursor:pointer;color:var(--ink);position:relative;padding-right:35px;font-size:16px;font-weight:600}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:4px;font-size:24px;font-weight:300;top:-6px;color:var(--brand)}details[open] summary:after{content:"−"}details p{padding-top:16px;color:var(--muted);font-size:14px}.contact-section{padding-top:0}.contact-panel{display:flex;align-items:center;justify-content:space-between;gap:45px;border-radius:var(--radius);padding:45px;background:#e9eeeb;border:1px solid #d9e1dc}.contact-panel p{max-width:740px;color:#61736b;font-size:14px;margin-top:16px}.contact-panel h2{font-size:29px}.contact-panel .button{flex-shrink:0}
.site-footer{background:#102736;color:#a8bac5;padding:55px 0 24px}.footer-top{display:flex;justify-content:space-between;gap:45px;border-bottom:1px solid #314754;padding-bottom:34px}.site-footer .brand{color:white}.site-footer .brand-mark{background:#203e50;border-color:#48606d}.site-footer .brand-sub{color:#90a6b3}.footer-copy{max-width:500px;font-size:12px;margin-top:21px;line-height:1.9}.footer-links{display:flex;gap:24px;align-items:flex-start;font-size:13px}.footer-links a:hover{color:#eadcc4}.footer-bottom{display:flex;justify-content:space-between;gap:20px;font-size:11px;padding-top:23px}.footer-bottom span{overflow-wrap:anywhere}
@media(min-width:1025px){.reveal{animation:rise .7s ease both}@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}}
@media(max-width:1024px){:root{--space:66px}.header-note{display:none}.hero{min-height:660px}.hero-index{display:none}.matrix{grid-template-columns:1fr 1fr}.matrix-item.primary{grid-column:1/-1;min-height:initial}.article-grid{gap:15px}.news-body{padding:20px}.topic-layout{gap:30px}.feed-layout{grid-template-columns:1fr 250px;gap:26px}.concern-layout,.faq-layout{gap:35px}.safety-band{grid-template-columns:1fr;gap:28px}.metric{padding:0 18px}.metric strong{font-size:37px}.section-head{gap:28px}.section-head h2{min-width:220px}}
@media(max-width:768px){.grid-container{padding-left:23px;padding-right:23px}.top-strip .grid-container span:last-child{display:none}.header-inner{min-height:74px;flex-wrap:wrap;gap:0}.brand-name{font-size:21px}.brand-mark{width:36px;height:36px}.menu-toggle{display:block}.main-nav{display:none;flex-basis:100%;padding:5px 0 15px;gap:24px}.main-nav.is-open{display:flex}.main-nav a{padding:12px 4px}.hero{min-height:660px}.hero-copy{padding-left:23px}.hero h1{font-size:47px}.hero .lead{font-size:14px}.section-head{display:block}.section-head .intro{margin-top:20px}.section-head .line-link{margin-top:18px}.feature-grid{grid-template-columns:1fr}.feature,.feature+.feature{padding:24px 0;border-left:0}.feature+.feature{border-top:1px solid var(--line)}.feature .number{margin-bottom:10px}.article-grid{grid-template-columns:1fr 1fr}.article-grid .news-card:last-child:nth-child(odd){grid-column:1/-1}.topic-layout,.feed-layout,.concern-layout,.faq-layout{grid-template-columns:1fr;gap:30px}.topic-image,.topic-image img{min-height:300px;height:300px}.editor-note{display:none}.metric-grid{grid-template-columns:1fr 1fr;gap:32px 0}.metric:nth-child(3){padding-left:0;border:0}.contact-panel{flex-direction:column;align-items:flex-start;padding:30px}.footer-top{flex-direction:column;gap:28px}.footer-bottom{flex-direction:column;gap:8px}.safety-band{padding:27px}}
@media(max-width:520px){:root{--space:52px}.grid-container{padding-left:20px;padding-right:20px}.hero{min-height:720px;padding:52px 0}.hero h1{font-size:39px;letter-spacing:-1px}.hero-copy{padding-left:18px}.hero .lead{line-height:1.95}.hero-points{gap:8px 17px;font-size:12px}.trust-line{flex-wrap:wrap;gap:5px 15px}.matrix,.article-grid{grid-template-columns:1fr}.matrix-item.primary{grid-column:auto}.matrix-item{min-height:initial;padding:24px}.matrix-item h3{margin-top:18px}.article-grid .news-card:last-child:nth-child(odd){grid-column:auto}.cover{height:205px}.feed-item{grid-template-columns:1fr 20px;gap:8px 15px}.feed-item time{grid-column:1/-1}.feed-item h3{font-size:17px}.feed-arrow{grid-column:2;grid-row:2}.metric{padding-right:5px}.metric h3{font-size:15px}.metric p{font-size:12px}.safety-copy{grid-template-columns:1fr;gap:23px}.footer-links{flex-wrap:wrap;gap:18px}.button{width:100%}.contact-panel{padding:26px}.contact-panel h2{font-size:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

/* roulang page: article */
:root{--ink:#132d40;--text:#263d4c;--muted:#6d7b83;--brand:#185b65;--accent:#c3a574;--paper:#fff;--bg:#f4f6f6;--line:#dfe6e8;--radius:16px;--shadow:0 15px 45px rgba(19,45,64,.07);--space:88px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--paper);color:var(--text);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;transition:color .2s,background .2s,transform .2s,box-shadow .2s}
a:hover{color:var(--brand)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
a:active,.button:active{transform:translateY(1px)}
img{display:block;max-width:100%;height:auto;object-fit:cover}
button,input{font:inherit}
button{cursor:pointer}
h1,h2,h3{font-family:inherit;color:var(--ink);font-weight:650;line-height:1.4;margin:0}
h2{font-size:30px;letter-spacing:-.6px}
h3{font-size:19px}
p{margin:0 0 18px}
.grid-container{max-width:1240px;padding-left:32px;padding-right:32px}
.section{padding:var(--space) 0;position:relative}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:44px;margin-bottom:34px}
.eyebrow{display:block;color:var(--brand);font-size:12px;font-weight:700;letter-spacing:2px;margin-bottom:14px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:16px 25px;margin:0;background:var(--brand);color:#fff;border:1px solid var(--brand);border-radius:7px;font-size:14px;font-weight:600;line-height:1.5;transition:.2s}
.button:hover,.button:focus{background:var(--ink);border-color:var(--ink);color:white;box-shadow:0 8px 20px #132d401c}
.button.secondary{background:transparent;border-color:var(--line);color:var(--ink)}
.button.secondary:hover{background:var(--bg);border-color:var(--brand)}
.badge-label{display:inline-block;font-size:11px;line-height:1.5;letter-spacing:1px;padding:6px 10px;border:1px solid var(--line);border-radius:4px;color:var(--brand);background:#fff}
.top-strip{background:var(--ink);color:#d2dde3;font-size:11px}
.top-strip .grid-container{display:flex;justify-content:space-between;gap:20px;padding-top:7px;padding-bottom:7px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:85px;gap:30px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand-mark{width:40px;height:40px;border:1px solid var(--ink);display:grid;place-items:center;border-radius:7px;font-size:20px;font-weight:700;background:var(--ink);color:white}
.brand-name{font-size:23px;font-weight:750;letter-spacing:1px}
.brand-sub{display:block;font-size:10px;letter-spacing:3px;color:var(--muted);line-height:1.3}
.main-nav{display:flex;gap:34px;align-items:center;align-self:stretch}
.main-nav a{position:relative;display:flex;align-items:center;font-size:14px;padding:0 4px}
.main-nav a:after{content:"";position:absolute;bottom:0;left:4px;right:4px;height:3px;background:transparent;transition:background .2s}
.main-nav a.active{font-weight:700;color:var(--brand)}
.main-nav a.active:after,.main-nav a:hover:after{background:var(--brand)}
.header-note{font-size:11px;color:var(--muted);padding-left:22px;border-left:1px solid var(--line)}
.menu-toggle{display:none;border:1px solid var(--line);border-radius:5px;padding:7px 12px;background:white;color:var(--ink)}
.menu-toggle:hover{background:var(--bg)}
.breadcrumb{display:flex;gap:10px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-bottom:34px}
.breadcrumb span[aria-hidden]{color:#b0bcc2}
.article-hero{background:var(--bg);padding:42px 0 60px;border-bottom:1px solid var(--line)}
.article-heading{max-width:940px;border-left:2px solid var(--accent);padding-left:30px}
.article-heading h1{font-size:clamp(30px,3.5vw,48px);letter-spacing:-1px;overflow-wrap:anywhere;margin:18px 0 24px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px 22px;color:var(--muted);font-size:12px}
.article-meta>span+span{border-left:1px solid #cbd6da;padding-left:22px}
.article-lead{max-width:860px}
.article-lead p{font-size:17px;line-height:2.05;margin:20px 0 0;color:#52636d;overflow-wrap:anywhere}
.article-layout{align-items:start}
.reading-column{padding-right:48px}
.prose{font-size:16px;line-height:2.05;overflow-wrap:anywhere}
.prose p{margin:0 0 24px}
.prose h1,.prose h2{font-size:27px;margin:42px 0 20px}
.prose h3{font-size:21px;margin:30px 0 16px}
.prose h4,.prose h5,.prose h6{font-size:18px;font-weight:650;margin:24px 0 12px}
.prose ul,.prose ol{margin:0 0 26px 24px}
.prose li{padding-left:5px;margin-bottom:10px}
.prose li::marker{color:var(--brand)}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.prose blockquote{margin:30px 0;padding:22px 26px;border-left:3px solid var(--accent);background:var(--bg);color:var(--text)}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:12px;margin:28px auto;max-width:100%;height:auto}
.prose table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:28px 0;font-size:14px}
.prose th,.prose td{padding:13px 16px;border:1px solid var(--line);text-align:left;min-width:110px}
.prose th{background:var(--bg);color:var(--ink)}
.prose pre{overflow-x:auto;background:var(--bg);padding:20px;border-radius:10px}
.prose iframe,.prose video{max-width:100%}
.article-side{position:sticky;top:115px}
.side-card{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:var(--paper);box-shadow:var(--shadow)}
.side-card h2{font-size:19px;margin-bottom:16px}
.side-card p{font-size:13px;color:var(--muted)}
.side-card .line-link{display:inline-block;font-size:13px;font-weight:600;border-bottom:1px solid var(--accent);padding-bottom:4px}
.safety-list{list-style:none;margin:20px 0 0;padding:0;border-top:1px solid var(--line)}
.safety-list li{padding:13px 0;border-bottom:1px solid var(--line);font-size:13px;display:flex;gap:12px}
.safety-list li:before{content:"—";color:var(--accent)}
.visual-section{padding:0 0 70px}
.editorial-figure{margin:0;display:grid;grid-template-columns:1.25fr 1fr;background:var(--ink);border-radius:var(--radius);overflow:hidden}
.editorial-figure img{width:100%;height:310px}
.editorial-figure figcaption{padding:42px;align-self:center;color:#c7d5dc}
.editorial-figure h2{color:#fff;font-size:26px;margin-bottom:18px}
.editorial-figure .eyebrow{color:var(--accent)}
.editorial-figure p{font-size:14px;margin-bottom:0}
.security-section{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.security-intro{padding-right:55px}
.security-intro p{color:var(--muted);margin-top:18px}
.security-items{border-top:1px solid var(--line)}
.security-item{display:grid;grid-template-columns:35px 1fr;gap:15px;padding:22px 0;border-bottom:1px solid var(--line)}
.security-item .number{color:var(--brand);font-size:12px;padding-top:3px}
.security-item p{font-size:14px;color:var(--muted);margin:8px 0 0}
.faq-intro{max-width:320px;padding-right:35px}
.faq-intro p{color:var(--muted);margin-top:18px;font-size:14px}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{list-style:none;cursor:pointer;position:relative;padding:23px 40px 23px 0;color:var(--ink);font-size:17px;font-weight:600}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";position:absolute;right:5px;top:19px;font-size:25px;color:var(--brand);font-weight:400}
.faq-list details[open] summary:after{content:"−"}
.faq-list summary:hover{color:var(--brand)}
.faq-answer{font-size:14px;line-height:1.95;color:var(--muted);padding:0 34px 23px 0}
.faq-answer p{margin:0}
.article-cta{padding:0 0 var(--space)}
.cta-panel{display:flex;align-items:center;justify-content:space-between;gap:35px;border:1px solid var(--line);border-radius:var(--radius);padding:38px 42px;background:var(--bg)}
.cta-panel h2{font-size:26px}
.cta-panel p{margin:12px 0 0;color:var(--muted);font-size:14px}
.cta-actions{display:flex;gap:12px;flex-shrink:0}
.empty-content{padding:80px 30px;text-align:center;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg)}
.empty-content h2{margin-bottom:25px}
.site-footer{background:var(--ink);color:#c0ced6;padding:55px 0 0}
.footer-top{display:grid;grid-template-columns:minmax(0,650px) 1fr;gap:70px;padding-bottom:36px}
.site-footer .brand{color:#fff;width:fit-content}
.site-footer .brand-mark{border-color:#547080;background:#214358}
.site-footer .brand-sub{color:#a5bac6}
.footer-copy{font-size:13px;line-height:1.95;margin:22px 0 0;color:#afc0ca}
.footer-links{display:flex;justify-content:flex-end;align-items:flex-start;flex-wrap:wrap;gap:24px;padding-top:15px;font-size:13px}
.footer-links a:hover{color:#eadcc4}
.footer-bottom{border-top:1px solid #345061;display:flex;justify-content:space-between;gap:24px;padding:22px 0;font-size:11px;color:#9db0bc}
@media(min-width:1025px){.side-card:hover{border-color:#b8c9cd;box-shadow:0 18px 45px #132d4012}}
@media(max-width:1024px){:root{--space:64px}.header-note{display:none}.reading-column{padding-right:28px}.article-heading{max-width:850px}.editorial-figure figcaption{padding:30px}.cta-panel{padding:30px}.cta-actions{flex-direction:column}.footer-top{gap:35px}.footer-links{gap:18px}}
@media(max-width:768px){.grid-container{padding-left:24px;padding-right:24px}.header-inner{min-height:76px;gap:20px}.main-nav{gap:22px}.article-hero{padding:30px 0 42px}.article-heading{padding-left:22px}.article-heading h1{font-size:34px}.reading-column{padding-right:0}.article-side{position:static;margin-top:36px}.side-card{box-shadow:none}.editorial-figure{grid-template-columns:1fr}.editorial-figure img{height:280px}.editorial-figure figcaption{padding:30px}.visual-section{padding-bottom:56px}.security-intro,.faq-intro{padding-right:0;max-width:none;margin-bottom:28px}.cta-panel{align-items:flex-start;flex-direction:column}.cta-actions{flex-direction:row;flex-wrap:wrap}.footer-top{grid-template-columns:1fr;gap:18px}.footer-links{justify-content:flex-start}.footer-bottom{flex-direction:column;gap:8px}.prose{font-size:16px}}
@media(max-width:520px){:root{--space:48px}.grid-container{padding-left:20px;padding-right:20px}.top-strip .grid-container span:last-child{display:none}.header-inner{min-height:74px;flex-wrap:wrap;gap:0;padding-top:13px;padding-bottom:13px}.brand-name{font-size:21px}.brand-mark{width:36px;height:36px}.menu-toggle{display:block}.main-nav{display:none;width:100%;padding-top:16px;margin-top:14px;border-top:1px solid var(--line);gap:22px;min-height:52px}.main-nav.is-open{display:flex}.main-nav a{padding:8px 2px;font-size:13px}.article-heading{padding-left:18px}.article-heading h1{font-size:29px;letter-spacing:-.5px}.article-meta{gap:9px 12px}.article-meta>span+span{padding-left:12px}.article-lead p{font-size:15px}.breadcrumb{margin-bottom:26px}h2{font-size:26px}.prose h2{font-size:24px}.prose h3{font-size:20px}.editorial-figure img{height:220px}.editorial-figure figcaption{padding:26px}.editorial-figure h2{font-size:23px}.side-card{padding:24px}.faq-list summary{font-size:16px}.cta-panel{padding:26px}.cta-panel h2{font-size:23px}.cta-actions{width:100%;flex-direction:column}.cta-actions .button{width:100%}.footer-links{gap:24px}.site-footer{padding-top:40px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{--ink:#132d40;--text:#263d4c;--muted:#6d7b83;--brand:#185b65;--accent:#c3a574;--paper:#fff;--bg:#f4f6f6;--line:#dfe6e8;--radius:16px;--shadow:0 15px 45px rgba(19,45,64,.07);--space:88px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--paper);color:var(--text);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{color:var(--ink);font-family:inherit;line-height:1.4;font-weight:650}
h1{font-size:clamp(32px,4.6vw,58px);letter-spacing:-1.5px}h2{font-size:clamp(25px,3vw,36px);letter-spacing:-.6px}h3{font-size:19px}
a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s,box-shadow .2s}
a:hover{color:var(--brand)}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
a:active,.button:active{transform:translateY(1px)}
img{display:block;max-width:100%;object-fit:cover}button,input{font:inherit}button{cursor:pointer}
.grid-container{max-width:1240px;padding-left:32px;padding-right:32px}
.section{padding:var(--space) 0;position:relative}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:44px;margin-bottom:34px}
.section-head .intro{max-width:550px;color:var(--muted)}
.eyebrow{display:block;color:var(--brand);font-size:12px;font-weight:700;letter-spacing:2px;margin-bottom:14px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:16px 25px;margin:0;background:var(--brand);color:#fff;border:1px solid var(--brand);border-radius:7px;font-size:14px;font-weight:600;line-height:1.5;transition:.2s}
.button:hover,.button:focus{background:var(--ink);border-color:var(--ink);color:white;box-shadow:0 8px 20px #132d401c}
.button.secondary{background:transparent;color:var(--brand);border-color:var(--line)}
.button.secondary:hover{background:var(--bg);border-color:var(--brand)}
.badge-label{display:inline-block;font-size:11px;line-height:1.5;letter-spacing:1px;padding:6px 10px;border:1px solid var(--line);border-radius:4px;color:var(--brand);background:#fff}
.top-strip{background:var(--ink);color:#d7e1e5;font-size:11px}
.top-strip .grid-container{display:flex;justify-content:space-between;padding-top:7px;padding-bottom:7px;gap:15px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:85px;gap:30px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand-mark{width:40px;height:40px;border:1px solid var(--ink);display:grid;place-items:center;border-radius:7px;font-size:20px;font-weight:700;background:var(--ink);color:white}
.brand-name{font-size:23px;font-weight:750;letter-spacing:1px}
.brand-sub{display:block;font-size:10px;letter-spacing:3px;color:var(--muted);line-height:1.3}
.main-nav{display:flex;gap:34px;align-items:center;align-self:stretch}
.main-nav a{position:relative;display:flex;align-items:center;font-size:14px;padding:0 4px}
.main-nav a:after{content:"";position:absolute;bottom:0;left:4px;right:4px;height:3px;background:transparent}
.main-nav a.active{font-weight:700;color:var(--brand)}
.main-nav a.active:after,.main-nav a:hover:after{background:var(--brand)}
.header-note{font-size:11px;color:var(--muted);padding-left:22px;border-left:1px solid var(--line)}
.menu-toggle{display:none;border:1px solid var(--line);border-radius:5px;padding:7px 12px;background:white;color:var(--ink)}
.page-hero{background:var(--bg);padding:40px 0 65px;border-bottom:1px solid var(--line);overflow:hidden}
.breadcrumb{display:flex;gap:12px;color:var(--muted);font-size:12px;margin-bottom:38px}
.hero-title{max-width:820px}
.hero-title h1{margin-bottom:20px}
.hero-title .lead{font-size:17px;color:var(--muted);max-width:720px}
.hero-bottom{margin-top:32px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.topic-tags{display:flex;gap:9px;flex-wrap:wrap}
.topic-tags a{background:#fff;border:1px solid var(--line);border-radius:30px;padding:7px 15px;font-size:12px}
.topic-tags a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.hero-caption{font-size:12px;color:var(--muted);white-space:nowrap}
.concern-panel{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.concern-item{padding:28px 30px;background:white;border-right:1px solid var(--line)}
.concern-item:last-child{border-right:0}
.concern-item .index{display:block;color:var(--accent);font-size:12px;margin-bottom:20px;font-weight:700}
.concern-item p{color:var(--muted);font-size:14px;margin-top:12px}
.split-heading{padding-right:40px}
.split-heading p{margin-top:20px;color:var(--muted)}
.soft{background:var(--bg)}
.editorial-image{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--ink);height:410px}
.editorial-image img{height:100%;width:100%;opacity:.78;transition:transform .7s}
.editorial-image:hover img{transform:scale(1.025)}
.image-caption{position:absolute;bottom:0;left:0;right:0;padding:42px 28px 25px;background:linear-gradient(transparent,rgba(10,29,40,.9));color:white}
.image-caption strong{display:block;font-size:22px;font-weight:550}.image-caption span{font-size:12px;color:#d5e1e5}
.standards{padding-left:50px}
.topic-row{display:grid;grid-template-columns:35px 1fr;gap:15px;padding:23px 0;border-bottom:1px solid var(--line)}
.topic-row:first-child{padding-top:0}
.topic-row span{color:var(--accent);font-size:12px;font-weight:700;padding-top:4px}
.topic-row h3{font-size:18px}
.topic-row p{font-size:14px;color:var(--muted);margin-top:7px}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px;margin-top:40px}
.process-step{border-top:2px solid var(--line);padding-top:25px}
.step-number{font-size:34px;line-height:1;font-weight:350;color:var(--brand);margin-bottom:25px}
.process-step h3{font-size:17px}
.process-step p{font-size:13px;color:var(--muted);margin-top:12px}
.policy-note{padding:17px 22px;background:var(--bg);border-left:3px solid var(--accent);margin-top:34px;font-size:13px;color:var(--muted)}
.scene-section{background:var(--ink);color:#cad6dd}
.scene-section h2,.scene-section h3{color:white}
.scene-section .eyebrow{color:var(--accent)}
.scene-section .intro{color:#b8c9d3}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.scene-card{padding:28px 30px;border:1px solid #3b5364;border-radius:var(--radius);background:#1a3548;transition:background .2s,transform .2s}
.scene-card:hover{background:#213f52;transform:translateY(-3px)}
.scene-card h3{font-size:19px;margin-bottom:11px}
.scene-card p{font-size:14px;color:#bfcfd8}
.scene-card .scene-label{font-size:11px;color:#dcc49c;display:block;margin-bottom:15px;letter-spacing:1px}
.faq-search{display:flex;gap:10px;margin-top:26px;max-width:360px}
.faq-search input{width:100%;min-width:0;margin:0;height:48px;border:1px solid var(--line);border-radius:7px;background:var(--bg);padding:10px 14px;box-shadow:none;font-size:13px}
.faq-search input:focus{border-color:var(--brand);background:white;box-shadow:none}
.search-status{font-size:12px;color:var(--muted);margin-top:10px;min-height:23px}
.faq-list{padding-left:44px}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{position:relative;list-style:none;cursor:pointer;padding:23px 38px 23px 0;font-size:16px;font-weight:600;color:var(--ink)}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";position:absolute;right:6px;top:21px;color:var(--brand);font-size:21px;font-weight:400}
.faq-list details[open] summary:after{content:"−"}
.faq-list details[open] summary{color:var(--brand)}
.faq-list details p{padding:0 35px 23px 0;font-size:14px;color:var(--muted)}
.empty-result{border:1px dashed var(--line);padding:25px;color:var(--muted);border-radius:8px}
[hidden]{display:none!important}
.closing{padding:0 0 78px}
.closing-panel{display:flex;justify-content:space-between;align-items:center;gap:40px;padding:42px 46px;border-radius:var(--radius);background:#eef3f2;border:1px solid #dce7e4}
.closing-panel h2{font-size:28px;margin-bottom:12px}
.closing-panel p{max-width:680px;font-size:14px;color:var(--muted)}
.closing-panel .button{flex-shrink:0}
.site-footer{background:#f4f6f6;border-top:1px solid var(--line);padding:52px 0 0}
.footer-top{display:flex;justify-content:space-between;gap:60px;padding-bottom:35px}
.footer-copy{max-width:660px;font-size:13px;color:var(--muted);margin-top:20px}
.footer-links{display:flex;gap:24px;font-size:13px;align-items:flex-start;padding-top:12px;white-space:nowrap}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:5px}
.footer-bottom{display:flex;justify-content:space-between;gap:25px;padding:22px 0;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}
@media(min-width:1025px){.hero-title{animation:rise .7s ease both}@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}}
@media(max-width:1024px){:root{--space:65px}.header-note{display:none}.grid-container{padding-left:26px;padding-right:26px}.standards{padding-left:30px}.section-head{gap:30px}.hero-caption{display:none}.process-grid{gap:18px}.footer-top{gap:30px}.footer-links{gap:16px}.footer-copy{max-width:570px}}
@media(max-width:768px){:root{--space:52px}.header-inner{min-height:74px;flex-wrap:wrap;gap:0}.menu-toggle{display:block}.main-nav{display:none;width:100%;gap:24px;border-top:1px solid var(--line);margin-top:12px}.main-nav.is-open{display:flex}.main-nav a{min-height:54px}.section-head{display:block}.section-head .intro{margin-top:18px}.page-hero{padding-bottom:43px}.breadcrumb{margin-bottom:27px}.hero-title .lead{font-size:15px}.hero-bottom{margin-top:25px}.concern-item{border-right:0;border-bottom:1px solid var(--line)}.concern-item:last-child{border-bottom:0}.split-heading{padding-right:0;margin-bottom:27px}.standards{padding-left:0;margin-top:30px}.editorial-image{height:330px}.process-grid{grid-template-columns:1fr 1fr;gap:30px}.scene-grid{grid-template-columns:1fr}.faq-list{padding-left:0;margin-top:28px}.faq-search{max-width:100%}.closing-panel{display:block;padding:30px}.closing-panel .button{margin-top:25px}.footer-top,.footer-bottom{flex-direction:column;gap:25px}.footer-links{padding-top:0}.closing{padding-bottom:52px}}
@media(max-width:520px){.grid-container{padding-left:20px;padding-right:20px}.top-strip .grid-container span:last-child{display:none}.brand-name{font-size:21px}.brand-mark{width:36px;height:36px}.brand-sub{font-size:9px}.menu-toggle{font-size:12px}.page-hero{padding-top:25px}h1{font-size:34px;letter-spacing:-1px}.topic-tags{gap:7px}.topic-tags a{padding:6px 12px}.concern-item{padding:25px}.process-grid{gap:25px 20px}.process-step h3{font-size:16px}.scene-card{padding:24px}.editorial-image{height:285px}.image-caption{padding:40px 22px 22px}.closing-panel{padding:26px}.closing-panel h2{font-size:24px}.closing-panel .button{width:100%}.footer-links{flex-wrap:wrap;gap:20px}.footer-bottom{gap:10px}.faq-list summary{font-size:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}