/* roulang page: index */
:root{--bg:#10151b;--panel:#171e26;--panel2:#1e2832;--ink:#f3f2ec;--muted:#a7b0bb;--line:#303a45;--accent:#d6b67a;--accent-soft:#ead4ad;--green:#94bba4;--radius:18px;--shadow:0 18px 48px #0003;--sidebar:210px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--bg);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;transition:color .2s,background .2s,transform .2s}a:hover{color:var(--accent-soft)}img{display:block;width:100%;height:auto}button,input{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}::selection{background:var(--accent);color:var(--bg)}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:650;line-height:1.35}h1{font-size:clamp(32px,4vw,57px);letter-spacing:-1.5px}h2{font-size:clamp(25px,2.5vw,34px);letter-spacing:-.5px}h3{font-size:19px}p{color:var(--muted)}small{font-size:12px}main,footer{margin-left:var(--sidebar)}.container{max-width:1190px;padding-left:40px;padding-right:40px}.site-header{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:#131a21;border-right:1px solid var(--line);z-index:100;padding:40px 23px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:11px;font-size:21px;font-weight:750;letter-spacing:1px}.brand-mark{display:grid;place-items:center;background:var(--accent);color:#22262a;width:39px;height:44px;border-radius:10px 2px;font-size:23px}.brand small{display:block;color:var(--muted);font-size:10px;font-weight:400;letter-spacing:2px}.site-nav{display:flex;flex-direction:column;gap:9px;margin-top:60px}.site-nav a{padding:12px 13px;border-radius:8px;color:var(--muted);font-size:14px}.site-nav a span{margin-right:10px;color:#727f8d;font-size:11px}.site-nav a:hover{background:var(--panel2);color:var(--ink)}.site-nav a.active{background:#d6b67a14;color:var(--accent);border-left:2px solid var(--accent)}.nav-note{margin-top:auto;border-top:1px solid var(--line);padding-top:22px;font-size:11px;line-height:2;color:var(--muted)}.nav-note strong{display:block;color:var(--accent);font-size:12px;font-weight:500}.section{padding:68px 0;border-bottom:1px solid #303a4570}.section.alt{background:#141b22}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:29px}.eyebrow{display:block;color:var(--accent);font-size:12px;letter-spacing:2px;margin-bottom:12px}.section-intro{max-width:720px;margin-top:17px;font-size:14px;line-height:1.95}.section-num{color:#657180;font-size:12px;white-space:nowrap}.btn{border-radius:7px;padding:12px 23px;font-size:14px;font-weight:600;transition:transform .2s,background .2s,color .2s;border:1px solid transparent}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-gold{background:var(--accent);color:#1b2025}.btn-gold:hover{background:var(--accent-soft);color:#141a20}.btn-outline-gold{border-color:#847454;color:var(--accent)}.btn-outline-gold:hover{background:#d6b67a15;color:var(--accent-soft)}.pill{display:inline-flex;align-items:center;gap:7px;border:1px solid #ffffff29;border-radius:30px;padding:5px 12px;font-size:11px;color:#d1d7dd}.dot{width:6px;height:6px;display:inline-block;background:var(--green);border-radius:50%}.hero{padding:0 0 48px;border-bottom:1px solid var(--line)}.hero-cover{height:270px;background:linear-gradient(0deg,#10151b 1%,#10151b66 65%,#10151b33),url('/assets/images/976a0a44a7e6180d.png') center 38%/cover;position:relative}.cover-label{position:absolute;right:40px;top:28px;color:#e9e3d4;letter-spacing:3px;font-size:11px}.profile{position:relative;margin-top:-52px}.profile-top{display:flex;align-items:flex-end;justify-content:space-between;gap:25px;margin-bottom:24px}.avatar{height:94px;width:94px;border:6px solid var(--bg);border-radius:23px;background:var(--accent);color:#1b2229;display:grid;place-items:center;font-size:44px;font-weight:750;box-shadow:var(--shadow)}.profile-meta{display:flex;gap:10px;flex-wrap:wrap;padding-bottom:6px}.hero .eyebrow{margin-bottom:13px}.hero-desc{max-width:880px;margin-top:22px;line-height:2;font-size:15px}.hero-bottom{display:flex;justify-content:space-between;align-items:center;gap:25px;margin-top:28px}.hero-topics{display:flex;flex-wrap:wrap;gap:24px;color:var(--muted);font-size:12px}.hero-topics span:before{content:"";width:4px;height:4px;display:inline-block;background:var(--accent);margin:0 9px 3px 0}.calendar{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.calendar-item{padding:28px;border-right:1px solid var(--line);background:var(--panel)}.calendar-item:last-child{border:0}.calendar-item .type{font-size:11px;color:var(--accent);letter-spacing:2px}.calendar-item h3{margin:15px 0 10px}.calendar-item p,.topic-body p,.insight p,.device-item p{font-size:13px;line-height:1.9}.topic-card{height:100%;background:var(--panel);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:transform .25s,box-shadow .25s}.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.topic-image{height:220px;overflow:hidden;position:relative}.topic-image img{height:100%;object-fit:cover;filter:brightness(.75);transition:transform .5s}.topic-card:hover img{transform:scale(1.04)}.topic-image .pill{position:absolute;left:22px;bottom:19px;background:#10151bbd}.topic-body{padding:27px}.topic-body h3{margin-bottom:12px}.channel-link{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:24px;padding-top:19px;color:var(--accent);font-size:13px}.insight-wrap{display:grid;grid-template-columns:1fr 1.5fr;gap:55px}.insight{padding:23px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:35px 1fr;gap:15px}.insight:first-child{padding-top:0}.insight:last-child{border-bottom:0}.insight b{color:var(--accent);font-size:12px;font-weight:400}.insight h3{margin-bottom:10px}.quote{margin-top:25px;border-left:2px solid var(--accent);padding:2px 0 2px 18px;color:#d7d6d0;font-size:17px}.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.news-card{padding:25px;border:1px solid var(--line);background:var(--panel);border-radius:12px;display:flex;flex-direction:column;min-width:0;transition:background .2s,border-color .2s}.news-card:hover{background:var(--panel2);border-color:#776a50}.news-meta{display:flex;gap:12px;justify-content:space-between;font-size:11px;color:var(--accent);margin-bottom:14px}.news-meta time{color:var(--muted)}.news-card h3{font-size:18px;line-height:1.6;overflow-wrap:anywhere}.news-card p{font-size:13px;margin-top:12px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}.news-arrow{margin-top:21px;color:var(--accent);font-size:12px}.empty{border:1px dashed var(--line);padding:35px;border-radius:12px;color:var(--muted);font-size:14px}.text-link{color:var(--accent);font-size:13px;white-space:nowrap}.media-list{border-top:1px solid var(--line)}.media-item{display:grid;grid-template-columns:55px 1fr 28px;gap:20px;padding:25px 0;border-bottom:1px solid var(--line);align-items:center}.media-item:hover{background:#ffffff03}.media-index{font-size:26px;color:#78818b;font-weight:300}.media-item h3{font-size:18px;margin-bottom:8px}.media-item p{font-size:13px}.media-item .arrow{color:var(--accent)}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.metric{background:var(--panel);padding:28px 22px}.metric strong{display:block;font-size:34px;color:var(--accent-soft);font-weight:500;line-height:1.3}.metric span{display:block;margin-top:10px;font-size:14px}.metric small{display:block;color:var(--muted);margin-top:7px}.analysis-note{display:flex;gap:18px;align-items:flex-start;margin-top:24px;padding:20px 24px;background:#d6b67a09;border-left:2px solid var(--accent)}.analysis-note p{font-size:13px}.analysis-note strong{color:var(--accent);white-space:nowrap;font-size:13px}.device-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.device-item{display:flex;gap:19px;padding:26px;border:1px solid var(--line);border-radius:var(--radius)}.device-icon{font-size:25px;line-height:1;color:var(--accent);padding-top:6px}.device-item h3{margin-bottom:10px}.safety{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;margin-top:30px}.safety-item{padding:23px 0;border-top:1px solid var(--line)}.safety-item h3{font-size:17px;margin-bottom:12px;display:flex;gap:12px}.safety-item h3 span{color:var(--green)}.safety-item p{font-size:13px}.faq-layout{display:grid;grid-template-columns:1fr 1.6fr;gap:50px}.faq-list details{padding:22px 0;border-bottom:1px solid var(--line)}.faq-list details:first-child{padding-top:0}.faq-list summary{font-weight:500;font-size:16px;list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"＋";color:var(--accent)}.faq-list details[open] summary:after{content:"－"}.faq-list p{margin-top:16px;font-size:13px;line-height:2}.follow-section{background:#1c252d;padding:45px 0}.follow-inner{display:flex;align-items:center;justify-content:space-between;gap:35px}.follow-inner h2{font-size:27px}.follow-inner p{max-width:650px;font-size:13px;margin-top:14px}.follow-action{flex-shrink:0;text-align:center}.follow-status{display:block;max-width:210px;color:var(--muted);font-size:11px;margin-top:10px;min-height:20px}.site-footer{padding:40px 0 26px;background:#0d1217}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:flex-start;padding-bottom:28px;border-bottom:1px solid var(--line)}.footer-brand{font-size:20px;color:var(--accent-soft);font-weight:650}.footer-top p{font-size:12px;max-width:580px;margin-top:10px}.footer-links{display:flex;gap:22px;white-space:nowrap;font-size:12px;color:var(--muted)}.copyright{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:#7f8a96;margin-top:23px;flex-wrap:wrap}
@media(min-width:1600px){.hero-cover{height:330px}.section{padding:78px 0}}
@media(max-width:1024px){:root{--sidebar:170px}.site-header{padding:30px 16px}.brand{font-size:18px;gap:8px}.brand-mark{width:33px;height:38px}.container{padding-left:28px;padding-right:28px}.insight-wrap,.faq-layout{gap:28px}.calendar-item{padding:22px}.metric-grid{grid-template-columns:repeat(2,1fr)}.topic-image{height:185px}.hero-topics{gap:12px}.follow-inner{align-items:flex-start}}
@media(max-width:768px){:root{--sidebar:0px}html{scroll-padding-top:95px}.site-header{position:sticky;top:0;width:100%;height:auto;flex-direction:row;align-items:center;justify-content:space-between;padding:12px 22px;border-right:0;border-bottom:1px solid var(--line);box-shadow:0 5px 22px #0002}.brand small,.nav-note{display:none}.brand-mark{width:30px;height:34px;font-size:19px}.site-nav{flex-direction:row;gap:6px;margin:0}.site-nav a{font-size:12px;padding:8px 10px}.site-nav a span{display:none}.site-nav a.active{border-left:0;border-bottom:2px solid var(--accent)}.hero-cover{height:230px}.section{padding:48px 0}.insight-wrap,.faq-layout{grid-template-columns:1fr;gap:30px}.calendar{grid-template-columns:1fr}.calendar-item{border-right:0;border-bottom:1px solid var(--line);padding:22px 25px}.calendar-item h3{margin-top:7px}.device-grid{gap:16px}.device-item{padding:21px;gap:12px}.follow-inner{flex-direction:column;gap:24px}.follow-action{text-align:left}.follow-status{max-width:none}.footer-top{flex-direction:column;gap:22px}.hero-bottom{align-items:flex-start}.hero-topics{max-width:260px}}
@media(max-width:520px){body{font-size:14px}.container{padding-left:21px;padding-right:21px}.site-header{padding:11px 15px}.brand{font-size:17px}.site-nav a{font-size:11px;padding:8px}.hero-cover{height:195px}.cover-label{top:20px;right:21px;font-size:10px}.profile{margin-top:-43px}.avatar{height:77px;width:77px;font-size:33px;border-width:5px}.profile-top{gap:12px;margin-bottom:20px}.profile-meta{gap:5px;max-width:190px;justify-content:flex-end}.pill{font-size:10px;padding:4px 8px}.hero-desc{font-size:14px}.hero-bottom{flex-direction:column;gap:22px}.hero-topics{max-width:none;font-size:11px}.btn{padding:11px 20px}.section-head{align-items:flex-start;gap:15px}.section-num{display:none}.section-intro{font-size:13px}.news-grid,.device-grid,.safety{grid-template-columns:1fr}.topic-image{height:200px}.topic-body{padding:23px}.news-card{padding:22px}.media-item{grid-template-columns:30px 1fr 15px;gap:12px}.media-index{font-size:21px}.media-item h3{font-size:16px}.metric{padding:22px 17px}.metric strong{font-size:29px}.metric span{font-size:13px}.analysis-note{padding:17px;flex-direction:column;gap:7px}.footer-links{flex-wrap:wrap}.follow-inner h2{font-size:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang page: article */
:root{--bg:#10151b;--panel:#171e26;--panel2:#1e2832;--ink:#f3f2ec;--muted:#a7b0bb;--line:#303a45;--accent:#d6b67a;--accent-soft:#ead4ad;--green:#94bba4;--radius:18px;--shadow:0 18px 48px #0003;--sidebar:210px}
*,:before,:after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:30px}
body{margin:0;background:var(--bg);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;transition:color .2s,background .2s,transform .2s}
a:hover{color:var(--accent-soft)}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}
button{cursor:pointer}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
::selection{background:var(--accent);color:var(--bg)}
main,footer{margin-left:var(--sidebar)}
.container{max-width:1190px;padding-left:40px;padding-right:40px}
.site-header{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:#131a21;border-right:1px solid var(--line);z-index:100;padding:40px 23px;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:11px;font-size:21px;font-weight:750;letter-spacing:1px}
.brand-mark{display:grid;place-items:center;flex-shrink:0;background:var(--accent);color:#22262a;width:39px;height:44px;border-radius:10px 2px;font-size:23px}
.brand small{display:block;color:var(--muted);font-size:10px;font-weight:400;letter-spacing:2px}
.site-nav{display:flex;flex-direction:column;gap:9px;margin-top:60px}
.site-nav a{padding:12px 13px;border-radius:8px;color:var(--muted);font-size:14px}
.site-nav a span{margin-right:10px;color:#727f8d;font-size:11px}
.site-nav a:hover{background:var(--panel2);color:var(--ink)}
.site-nav a.active{background:#d6b67a14;color:var(--accent);border-left:2px solid var(--accent)}
.site-nav a:active{background:#d6b67a24}
.nav-note{margin-top:auto;border-top:1px solid var(--line);padding-top:22px;font-size:11px;line-height:2;color:var(--muted)}
.nav-note strong{display:block;color:var(--accent);font-size:12px;font-weight:500}
.section{padding:64px 0;border-bottom:1px solid #303a4570}
.section.alt{background:#141b22}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:29px}
.eyebrow{display:block;color:var(--accent);font-size:12px;letter-spacing:2px;margin-bottom:12px}
h1,h2,h3{color:var(--ink);font-weight:650;line-height:1.5}
h1{font-size:clamp(29px,3.7vw,48px);letter-spacing:-.6px;overflow-wrap:anywhere}
h2{font-size:clamp(23px,2.3vw,30px);margin:0 0 18px}
h3{font-size:18px;margin:0 0 12px}
p{color:var(--muted);margin:0 0 18px}
.btn{border-radius:7px;padding:12px 23px;font-size:14px;font-weight:600;transition:transform .2s,background .2s,color .2s;border:1px solid transparent}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-gold{background:var(--accent);color:#1b2025}
.btn-gold:hover,.btn-gold:focus{background:var(--accent-soft);color:#141a20}
.btn-outline-gold{border-color:#847454;color:var(--accent)}
.btn-outline-gold:hover{background:#d6b67a15;color:var(--accent-soft);border-color:var(--accent)}
.pill{display:inline-flex;align-items:center;gap:7px;border:1px solid #ffffff29;border-radius:30px;padding:5px 12px;font-size:11px;color:#d1d7dd}
.article-hero{position:relative;overflow:hidden;padding:55px 0 48px;border-bottom:1px solid var(--line);background:radial-gradient(ellipse at 95% 0,#d6b67a0d,transparent 60%),var(--bg)}
.article-hero:after{content:"";position:absolute;right:40px;top:0;width:130px;height:5px;background:var(--accent)}
.breadcrumb-line{display:flex;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:12px;margin-bottom:40px}
.breadcrumb-line span:last-child{color:var(--accent)}
.article-hero h1{max-width:970px;margin:17px 0 24px}
.profile-meta{display:flex;flex-wrap:wrap;gap:12px 23px;color:var(--muted);font-size:12px}
.profile-meta span+span{border-left:1px solid var(--line);padding-left:23px}
.summary-layout{display:grid;grid-template-columns:145px minmax(0,1fr);gap:30px}
.summary-label{border-left:2px solid var(--accent);padding-left:18px}
.summary-label h2{font-size:20px;margin-bottom:5px}
.summary-label span{font-size:11px;color:var(--muted);letter-spacing:2px}
.summary-copy{font-size:16px;line-height:2;margin-bottom:22px;color:#d4d8dc;overflow-wrap:anywhere}
.summary-tags{display:flex;flex-wrap:wrap;gap:9px}
.summary-tags .pill{border-color:var(--line);color:var(--muted)}
.reading-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:40px;align-items:start}
.article-paper{min-width:0}
.article-figure{margin:0 0 36px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel)}
.article-figure img{width:100%;max-height:420px;object-fit:cover}
.article-figure figcaption{padding:12px 20px;font-size:11px;color:var(--muted);letter-spacing:1px}
.article-content{font-size:16px;line-height:2.05;color:#d4d8dc;overflow-wrap:anywhere}
.article-content p{margin:0 0 1.5em;color:inherit}
.article-content h2{margin:40px 0 20px;font-size:26px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.article-content h3{margin:30px 0 15px;font-size:21px}
.article-content h4,.article-content h5,.article-content h6{margin:24px 0 12px;font-size:18px;color:var(--ink)}
.article-content ul,.article-content ol{padding-left:25px;margin:20px 0 28px}
.article-content li{padding-left:6px;margin-bottom:10px}
.article-content li::marker{color:var(--accent)}
.article-content a{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.article-content blockquote{margin:28px 0;padding:23px 26px;background:var(--panel);border-left:3px solid var(--accent);border-radius:0 10px 10px 0}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:12px;margin:25px auto;max-width:100%;height:auto}
.article-content iframe,.article-content video{max-width:100%}
.article-content table{display:block;overflow-x:auto;max-width:100%;margin:25px 0;border-collapse:collapse}
.article-content td,.article-content th{padding:12px;border:1px solid var(--line)}
.article-content th{background:var(--panel2)}
.article-content pre{padding:20px;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:10px;color:var(--ink)}
.article-content hr{border-color:var(--line);margin:35px 0;opacity:1}
.article-aside{position:sticky;top:30px}
.info-card{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);box-shadow:var(--shadow)}
.info-card h3{font-size:17px}
.info-card p{font-size:12px;line-height:1.95}
.info-card dl{margin:22px 0 0}
.info-card dl div{padding:13px 0;border-top:1px solid var(--line)}
.info-card dt{font-size:10px;color:var(--muted);font-weight:400;margin-bottom:4px}
.info-card dd{margin:0;font-size:12px;color:var(--ink);overflow-wrap:anywhere}
.aside-note{padding:20px 3px;font-size:11px;color:var(--muted)}
.aside-note:before{content:"";display:inline-block;width:6px;height:6px;background:var(--green);border-radius:50%;margin-right:8px}
.empty-state{text-align:center;padding:55px 24px;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius)}
.empty-state h2{margin-bottom:24px}
.safety-layout{display:grid;grid-template-columns:1fr 1.5fr;gap:60px}
.safety-lead p{max-width:340px;font-size:14px}
.safety-item{padding:23px 0;border-top:1px solid var(--line)}
.safety-item:first-child{padding-top:0;border-top:0}
.safety-item h3{font-size:17px;margin-bottom:12px;display:flex;gap:12px}
.safety-item h3 span{color:var(--green);font-size:12px;padding-top:4px}
.safety-item p{font-size:13px;margin-bottom:0}
.faq-layout{display:grid;grid-template-columns:1fr 1.6fr;gap:50px}
.faq-list details{padding:22px 0;border-bottom:1px solid var(--line)}
.faq-list details:first-child{padding-top:0}
.faq-list summary{font-weight:500;font-size:16px;list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;transition:color .2s}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"＋";color:var(--accent);flex-shrink:0}
.faq-list details[open] summary:after{content:"−"}
.faq-list summary:hover,.faq-list details[open] summary{color:var(--accent-soft)}
.faq-list p{font-size:13px;line-height:1.95;margin:15px 32px 0 0}
.article-cta{background:var(--panel);padding:42px;border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between;gap:35px;box-shadow:var(--shadow)}
.article-cta h2{font-size:26px;margin-bottom:12px}
.article-cta p{margin:0;max-width:620px;font-size:14px}
.article-cta .btn{flex-shrink:0}
.site-footer{padding:48px 0 24px;background:#0c1116}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr;gap:60px;padding-bottom:35px}
.footer-brand{font-size:23px;font-weight:700;letter-spacing:1px}
.footer-top p{font-size:12px;max-width:590px;line-height:1.95;margin:14px 0 0}
.footer-links{display:flex;justify-content:flex-end;align-items:flex-start;gap:22px;flex-wrap:wrap;padding-top:8px;font-size:12px;color:var(--muted)}
.footer-links a:hover{color:var(--accent)}
.copyright{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;border-top:1px solid var(--line);padding-top:22px;font-size:10px;color:#88939e}
@media(min-width:1600px){.article-hero{padding-top:75px;padding-bottom:65px}}
@media(max-width:1024px){:root{--sidebar:170px}.site-header{padding:32px 15px}.brand{font-size:18px;gap:8px}.brand-mark{width:34px;height:40px}.brand small{font-size:9px;letter-spacing:1px}.site-nav a{padding:12px 9px;font-size:12px}.site-nav a span{margin-right:7px}.container{padding-left:28px;padding-right:28px}.reading-layout{grid-template-columns:minmax(0,1fr);gap:30px}.article-aside{position:static;display:grid;grid-template-columns:1.3fr 1fr;gap:24px;align-items:center}.safety-layout,.faq-layout{gap:30px;grid-template-columns:1fr 1.5fr}.footer-top{gap:25px}.footer-links{gap:15px}}
@media(max-width:768px){:root{--sidebar:0px}html{scroll-padding-top:115px}.site-header{position:sticky;top:0;width:100%;padding:15px 24px;flex-direction:row;align-items:center;justify-content:space-between;border-right:0;border-bottom:1px solid var(--line);gap:20px;background:#131a21f7;backdrop-filter:blur(14px)}.brand{font-size:19px}.site-nav{margin:0;flex-direction:row;gap:5px}.site-nav a{white-space:nowrap}.site-nav a.active{border-left:0;box-shadow:inset 0 -2px var(--accent)}.nav-note{display:none}.container{padding-left:24px;padding-right:24px}.section{padding:45px 0}.article-hero{padding:35px 0}.breadcrumb-line{margin-bottom:26px}.summary-layout{grid-template-columns:1fr;gap:22px}.summary-label{display:flex;gap:18px;align-items:center}.summary-label h2{margin:0}.safety-layout,.faq-layout{grid-template-columns:1fr;gap:24px}.safety-lead p{max-width:none}.article-cta{padding:30px;align-items:flex-start;flex-direction:column;gap:24px}.footer-top{grid-template-columns:1fr;gap:24px}.footer-links{justify-content:flex-start}.copyright{flex-direction:column;gap:7px}}
@media(max-width:520px){.site-header{padding:13px 16px;gap:10px;flex-wrap:wrap}.brand{font-size:18px}.brand small{font-size:9px}.brand-mark{width:30px;height:35px;font-size:21px}.site-nav{gap:0}.site-nav a{font-size:11px;padding:10px 8px}.site-nav a span{display:none}.container{padding-left:19px;padding-right:19px}.article-hero:after{right:19px;width:65px}.article-hero h1{font-size:29px}.profile-meta{gap:10px 14px;font-size:11px}.profile-meta span+span{padding-left:14px}.summary-copy{font-size:14px}.article-aside{grid-template-columns:1fr;gap:0}.article-content{font-size:15px;line-height:2}.article-content h2{font-size:23px}.article-content h3{font-size:19px}.article-figure{margin-bottom:25px}.article-figure img{min-height:180px}.article-cta{padding:25px}.article-cta h2{font-size:23px}.article-cta .btn{width:100%}.faq-list summary{font-size:15px}.footer-links{gap:20px}.section-head{align-items:flex-start;flex-direction:column;gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang page: category1 */
:root{--bg:#10151b;--panel:#171e26;--panel2:#1e2832;--ink:#f3f2ec;--muted:#a7b0bb;--line:#303a45;--accent:#d6b67a;--accent-soft:#ead4ad;--green:#94bba4;--radius:18px;--shadow:0 18px 48px #0003;--sidebar:210px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:30px}
body{margin:0;background:var(--bg);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;transition:color .2s,background .2s,transform .2s}
a:hover{color:var(--accent-soft)}
img{display:block;width:100%;height:auto}
button,input{font:inherit}
button{cursor:pointer}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
::selection{background:var(--accent);color:var(--bg)}
main,footer{margin-left:var(--sidebar)}
.container{max-width:1190px;padding-left:40px;padding-right:40px}
p{color:var(--muted);margin:0 0 16px}
p:last-child{margin-bottom:0}
h1,h2,h3{color:var(--ink);font-weight:650;line-height:1.4;letter-spacing:.02em}
h1{font-size:clamp(32px,4.2vw,56px);margin:0}
h2{font-size:clamp(25px,2.6vw,35px);margin:0}
h3{font-size:19px;margin:0 0 12px}
.site-header{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:#131a21;border-right:1px solid var(--line);z-index:100;padding:40px 23px;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:11px;font-size:21px;font-weight:750;letter-spacing:1px}
.brand-mark{display:grid;place-items:center;background:var(--accent);color:#22262a;width:39px;height:44px;border-radius:10px 2px;font-size:23px;flex-shrink:0}
.brand small{display:block;color:var(--muted);font-size:10px;font-weight:400;letter-spacing:2px}
.site-nav{display:flex;flex-direction:column;gap:9px;margin-top:60px}
.site-nav a{padding:12px 13px;border-radius:8px;color:var(--muted);font-size:14px;white-space:nowrap}
.site-nav a span{margin-right:10px;color:#727f8d;font-size:11px}
.site-nav a:hover{background:var(--panel2);color:var(--ink)}
.site-nav a.active{background:#d6b67a14;color:var(--accent);border-left:2px solid var(--accent)}
.site-nav a:active{background:#d6b67a24}
.nav-note{margin-top:auto;border-top:1px solid var(--line);padding-top:22px;font-size:11px;line-height:2;color:var(--muted)}
.nav-note strong{display:block;color:var(--accent);font-size:12px;font-weight:500}
.section{padding:68px 0;border-bottom:1px solid #303a4570}
.section.alt{background:#141b22}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:29px}
.eyebrow{display:block;color:var(--accent);font-size:12px;letter-spacing:2px;margin-bottom:12px}
.section-intro{max-width:720px;margin-top:17px;font-size:14px;line-height:1.95}
.section-num{color:#657180;font-size:12px;white-space:nowrap}
.btn{border-radius:7px;padding:12px 23px;font-size:14px;font-weight:600;transition:transform .2s,background .2s,color .2s;border:1px solid transparent}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-gold{background:var(--accent);color:#1b2025}
.btn-gold:hover,.btn-gold:focus{background:var(--accent-soft);color:#141a20}
.btn-outline-gold{border-color:#847454;color:var(--accent)}
.btn-outline-gold:hover{background:#d6b67a15;color:var(--accent-soft);border-color:var(--accent)}
.pill{display:inline-flex;align-items:center;gap:7px;border:1px solid #ffffff29;border-radius:30px;padding:5px 12px;font-size:11px;color:#d1d7dd}
.text-link{color:var(--accent);font-size:13px;white-space:nowrap}
.category-hero{padding:45px 0 0;border-bottom:1px solid var(--line)}
.breadcrumb-line{font-size:12px;color:var(--muted);display:flex;gap:12px;margin-bottom:30px;align-items:center}
.breadcrumb-line span[aria-hidden]{color:#64717f}
.category-summary{max-width:760px;margin:20px 0 28px;font-size:15px;line-height:2}
.hero-stage{position:relative;isolation:isolate;min-height:340px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius) var(--radius) 0 0;padding:38px;display:flex;align-items:flex-end;background:#17232d}
.hero-stage>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;filter:brightness(.65)}
.hero-stage::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#10151bf0,#10151b8c 65%,#10151b33),linear-gradient(0deg,#10151bca,transparent)}
.stage-copy{max-width:580px}
.stage-copy h2{font-size:30px;margin:14px 0}
.stage-copy p{max-width:480px;color:#ccd0d5;font-size:14px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:25px}
.topic-strip{display:flex;gap:24px;align-items:center;flex-wrap:wrap;padding:17px 0;color:var(--muted);font-size:12px}
.topic-strip strong{color:var(--accent);font-weight:500}
.topic-strip span{padding-left:16px;border-left:1px solid var(--line)}
.statement{border-left:2px solid var(--accent);padding:3px 0 3px 24px;max-width:710px}
.statement p{font-size:16px;line-height:2}
.risk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:34px}
.risk-card{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:var(--panel);transition:border-color .2s,transform .2s}
.risk-card:hover{border-color:#796c54;transform:translateY(-3px)}
.card-index{display:block;color:var(--accent);font-size:12px;letter-spacing:2px;margin-bottom:23px}
.risk-card p{font-size:13px;line-height:1.95}
.evidence-layout{display:grid;grid-template-columns:.9fr 1.3fr;gap:60px}
.evidence-side{padding:28px;background:var(--panel);border-radius:var(--radius);border:1px solid var(--line);align-self:start}
.evidence-side h3{font-size:22px}
.evidence-side p{font-size:13px}
.evidence-side .pill{margin-top:20px;color:var(--green);border-color:#94bba44a}
.evidence-list{list-style:none;margin:0;padding:0}
.evidence-list li{display:grid;grid-template-columns:36px 1fr;gap:17px;padding:22px 0;border-bottom:1px solid var(--line)}
.evidence-list li:first-child{padding-top:0}
.evidence-number{font-size:14px;color:var(--accent);padding-top:4px}
.evidence-list h3{font-size:18px}
.evidence-list p{font-size:13px}
.check-band{padding:26px 30px;border:1px solid #d6b67a42;border-radius:12px;margin-top:32px;background:#d6b67a08;display:flex;align-items:flex-start;gap:24px}
.check-band strong{color:var(--accent);white-space:nowrap;font-weight:500}
.check-band p{font-size:13px}
.info-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px}
.feature-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel)}
.feature-image{position:relative;height:225px;overflow:hidden}
.feature-image img{height:100%;object-fit:cover;filter:brightness(.7);transition:transform .5s}
.feature-card:hover img{transform:scale(1.035)}
.feature-image .pill{position:absolute;left:25px;bottom:20px;background:#10151bd9}
.feature-body{padding:28px}
.feature-body p{font-size:14px;line-height:1.95}
.brief-stack{display:flex;flex-direction:column;gap:18px}
.brief-item{padding:27px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);flex:1}
.brief-item h3{font-size:19px}
.brief-item p{font-size:13px}
.brief-label{color:var(--accent);font-size:11px;letter-spacing:2px;display:block;margin-bottom:12px}
.security-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:65px}
.security-heading p{font-size:14px;line-height:2;margin-top:20px}
.security-note{margin-top:30px;display:flex;gap:12px;align-items:center;color:var(--green);font-size:12px}
.security-note::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green)}
.safety-item{padding:23px 0;border-top:1px solid var(--line)}
.safety-item:first-child{padding-top:0;border-top:0}
.safety-item h3{font-size:17px;margin-bottom:12px;display:flex;gap:12px}
.safety-item h3 span{color:var(--green)}
.safety-item p{font-size:13px}
.faq-layout{display:grid;grid-template-columns:1fr 1.6fr;gap:50px}
.faq-list details{padding:22px 0;border-bottom:1px solid var(--line)}
.faq-list details:first-child{padding-top:0}
.faq-list summary{font-weight:500;font-size:16px;list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;transition:color .2s}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-size:22px;color:var(--accent);font-weight:400;line-height:1.5}
.faq-list details[open] summary::after{content:"−"}
.faq-list summary:hover,.faq-list details[open] summary{color:var(--accent-soft)}
.faq-list details p{font-size:13px;line-height:2;margin-top:16px;padding-right:24px}
.cta-section{padding:54px 0;background:#171e26;border-bottom:1px solid var(--line)}
.cta-panel{display:flex;justify-content:space-between;align-items:center;gap:35px}
.cta-panel h2{font-size:28px}
.cta-panel p{font-size:14px;max-width:660px;margin-top:15px}
.cta-panel .btn{flex-shrink:0}
.site-footer{background:#10151b;padding:43px 0 25px}
.footer-top{display:flex;justify-content:space-between;gap:50px;padding-bottom:30px}
.footer-brand{font-size:22px;font-weight:700;letter-spacing:1px}
.footer-top p{max-width:580px;font-size:12px;line-height:2;margin-top:12px}
.footer-links{display:flex;gap:20px;align-items:flex-start;flex-shrink:0;font-size:12px;color:var(--muted);padding-top:10px}
.copyright{display:flex;justify-content:space-between;gap:20px;padding-top:22px;border-top:1px solid var(--line);color:#87939f;font-size:11px}
@media(min-width:1600px){.hero-stage{min-height:390px}}
@media(max-width:1200px){.container{padding-left:30px;padding-right:30px}.risk-card{padding:22px}.evidence-layout,.security-layout{gap:35px}.footer-top{flex-direction:column;gap:15px}.footer-links{padding-top:0}}
@media(max-width:1024px){:root{--sidebar:180px}.site-header{padding:30px 16px}.brand{font-size:19px;gap:8px}.brand-mark{width:34px;height:40px}.site-nav a{padding:11px 8px;font-size:13px}.site-nav a span{margin-right:7px}.risk-grid{grid-template-columns:1fr}.risk-card{display:grid;grid-template-columns:35px 1fr;gap:6px 17px}.risk-card p{grid-column:2}.card-index{margin:0;padding-top:4px}.risk-card h3{margin:0 0 6px}.info-grid{grid-template-columns:1fr 1fr}.feature-image{height:210px}.feature-body,.brief-item{padding:23px}.faq-layout{gap:30px;grid-template-columns:1fr 1.5fr}.copyright{flex-direction:column;gap:6px}}
@media(max-width:768px){:root{--sidebar:0px}html{scroll-padding-top:125px}.site-header{position:sticky;inset:auto;top:0;width:100%;padding:13px 22px;display:flex;flex-direction:row;align-items:center;justify-content:space-between;border-right:0;border-bottom:1px solid var(--line);gap:15px;background:#131a21f5;backdrop-filter:blur(16px)}.brand{font-size:19px}.brand small{font-size:9px;letter-spacing:1px}.brand-mark{width:33px;height:37px;font-size:20px}.site-nav{flex-direction:row;margin:0;gap:5px}.site-nav a{font-size:12px;padding:9px 10px}.site-nav a span{display:none}.site-nav a.active{border-left:0;border-bottom:2px solid var(--accent)}.nav-note{display:none}.container{padding-left:24px;padding-right:24px}.section{padding:48px 0}.category-hero{padding-top:28px}.hero-stage{min-height:330px;padding:28px}.stage-copy h2{font-size:27px}.evidence-layout,.security-layout,.faq-layout{grid-template-columns:1fr;gap:30px}.evidence-side{padding:25px}.info-grid{grid-template-columns:1fr}.brief-stack{display:grid;grid-template-columns:1fr 1fr}.feature-image{height:250px}.section-head{align-items:flex-start;gap:15px}.section-num{display:none}.cta-panel{align-items:flex-start;flex-direction:column;gap:22px}.cta-panel h2{font-size:26px}.check-band{gap:12px;flex-direction:column;padding:23px}.footer-top{gap:18px}.footer-links{flex-wrap:wrap}.site-footer{padding-top:32px}}
@media(max-width:520px){body{font-size:14px}.container{padding-left:20px;padding-right:20px}.site-header{padding:12px 15px;gap:10px}.brand{gap:7px;font-size:17px;letter-spacing:0}.brand small{font-size:8px}.site-nav a{font-size:11px;padding:9px 7px}.brand-mark{width:29px;height:34px}.category-summary{font-size:14px}.hero-stage{padding:24px;min-height:350px}.hero-stage>img{object-position:62% center}.stage-copy h2{font-size:25px}.hero-actions{gap:10px}.hero-actions .btn{padding:10px 16px;font-size:13px}.topic-strip{gap:12px;font-size:11px}.topic-strip span{padding-left:12px}.topic-strip strong{width:100%}.section{padding:40px 0}.statement{padding-left:18px}.statement p{font-size:14px}.risk-card{padding:22px 19px;grid-template-columns:25px 1fr;gap:4px 12px}.brief-stack{grid-template-columns:1fr}.feature-image{height:210px}.feature-body{padding:24px}.evidence-list li{grid-template-columns:25px 1fr;gap:12px}.faq-list summary{font-size:15px}.footer-links{gap:18px}.copyright{font-size:10px;overflow-wrap:anywhere}.cta-section{padding:40px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}

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