/* roulang page: index */
:root{
      --primary:#1769aa;--primary-dark:#0e4775;--secondary:#159a9c;--accent:#e9983d;
      --bg:#f5f8fb;--surface:#fff;--text:#182b3a;--muted:#657787;--border:#dce7ef;
      --shadow:0 12px 34px rgba(27,65,94,.09);--shadow-hover:0 18px 42px rgba(27,65,94,.16);
      --r1:8px;--r2:16px;--r3:24px;--container:1220px;--space:92px
    }
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.85}a{color:inherit;text-decoration:none;transition:.25s}img{display:block;max-width:100%}button,input{font:inherit}.container{max-width:var(--container);margin:auto;padding:0 24px}.site-header{position:relative;background:#fff;border-bottom:1px solid var(--border);z-index:5}.nav-wrap{min-height:72px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:10px;min-width:150px;color:var(--primary-dark);font-size:22px;font-weight:800;letter-spacing:-1px}.brand-mark{width:31px;height:31px;border:3px solid var(--secondary);border-radius:50%;position:relative}.brand-mark:after{content:"";position:absolute;width:11px;height:3px;background:var(--primary);right:-7px;top:11px;transform:rotate(-35deg)}.main-nav{display:flex;align-items:center;gap:4px;flex:1}.main-nav a{padding:10px 13px;border-radius:var(--r1);font-size:14px;color:#506575;white-space:nowrap}.main-nav a:hover,.main-nav a.active{color:var(--primary);background:#edf6fc}.nav-cta,.button.primary{background:var(--primary);color:#fff;border-radius:var(--r1);padding:11px 18px;font-weight:700;box-shadow:0 6px 14px rgba(23,105,170,.18)}.nav-cta:hover,.button.primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}.menu-toggle{display:none;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:var(--r1);color:var(--primary)}.hero{padding:68px 0 76px;background:linear-gradient(100deg,#f5f9fc 0%,#eef6fb 55%,#e6f2f5 100%);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1fr 1.04fr;gap:62px;align-items:center}.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);background:#e5f2fb;border-radius:30px;padding:5px 12px;font-size:13px;font-weight:700}.hero h1{font-size:clamp(36px,5vw,61px);line-height:1.2;letter-spacing:-2px;margin:18px 0 20px;color:#102b42}.hero h1 span{color:var(--primary)}.hero-lead{font-size:18px;color:#526b7d;max-width:650px}.actions{display:flex;flex-wrap:wrap;gap:13px;margin:28px 0}.button{display:inline-block;border:0;padding:12px 20px;border-radius:var(--r1);font-weight:700}.button.outline{border:1px solid #a9c9dc;color:var(--primary);background:#fff}.button.outline:hover{border-color:var(--primary);background:#eef7fc}.hero-note{display:flex;gap:23px;flex-wrap:wrap;color:var(--muted);font-size:13px}.hero-note strong{display:block;color:var(--text);font-size:17px}.visual{position:relative;min-height:410px}.visual img{width:100%;height:410px;object-fit:cover;border-radius:var(--r3);box-shadow:var(--shadow-hover)}.visual-panel{position:absolute;left:-28px;bottom:26px;width:260px;padding:19px;background:#fff;border:1px solid rgba(220,231,239,.9);border-radius:var(--r2);box-shadow:var(--shadow)}.panel-title{font-size:13px;color:var(--muted);margin-bottom:12px}.match-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-top:1px solid var(--border);font-size:14px}.match-row b{color:var(--primary-dark)}.status{color:#b86d18;font-size:12px}.section{padding:var(--space) 0}.section.alt{background:#fff}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}.section-head h2{font-size:34px;line-height:1.3;margin:0;color:#15344b}.section-head p{max-width:620px;color:var(--muted);margin:8px 0 0}.text-link{color:var(--primary);font-weight:700;white-space:nowrap}.text-link:hover{text-decoration:underline}.intro-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:start}.deep-copy{font-size:17px;color:#40596b}.deep-copy p{margin-top:0;margin-bottom:18px}.metric-box{display:grid;grid-template-columns:1fr 1fr;gap:12px}.metric{background:#fff;border:1px solid var(--border);padding:20px;border-radius:var(--r2);box-shadow:var(--shadow)}.metric strong{display:block;color:var(--primary-dark);font-size:28px;line-height:1.2}.metric small{color:var(--muted)}.feature-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.feature-card,.topic-card,.quote,.safe-card,.faq-item,.news-main,.subscribe{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);transition:.25s}.feature-card:hover,.topic-card:hover,.quote:hover,.news-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.feature-card{padding:28px}.feature-card.large{grid-row:span 2;background:#eaf5fa}.feature-card h3,.topic-card h3{font-size:22px;margin:13px 0 8px}.feature-card p,.topic-card p{color:var(--muted);margin:0}.number{font-size:13px;color:var(--secondary);font-weight:800;letter-spacing:1px}.side-stack{display:grid;gap:20px}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.topic-card{overflow:hidden}.topic-card img{width:100%;height:154px;object-fit:cover}.topic-card .inside{padding:20px}.topic-card .tag{font-size:12px;padding:3px 9px}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:2px solid #cfe2ed}.step{position:relative;padding:28px 18px 10px;border-right:1px solid var(--border)}.step:last-child{border:0}.step:before{content:"";position:absolute;top:-9px;left:18px;width:16px;height:16px;border-radius:50%;background:var(--secondary);border:4px solid #e4f3f5}.step b{display:block;color:var(--primary-dark);font-size:18px;margin-bottom:8px}.step p{font-size:14px;color:var(--muted);margin:0}.split-content{display:grid;grid-template-columns:.86fr 1.14fr;gap:45px;align-items:center}.split-content img{height:360px;width:100%;object-fit:cover;border-radius:var(--r2);box-shadow:var(--shadow)}.content-box h2{font-size:32px;line-height:1.35;margin:0 0 17px}.content-box p{color:#4d6576;margin:0 0 17px}.bullet-list{padding:0;margin:20px 0;list-style:none}.bullet-list li{padding:9px 0 9px 28px;border-bottom:1px dashed var(--border);position:relative}.bullet-list li:before{content:"✓";position:absolute;left:0;color:var(--secondary);font-weight:bold}.report-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.report{padding:26px;background:#fff;border-left:4px solid var(--secondary);border-radius:var(--r1);box-shadow:var(--shadow)}.report h3{margin:0 0 10px;font-size:21px}.report p{margin:0;color:var(--muted)}.bar{margin:17px 0 7px;height:8px;background:#e7eff4;border-radius:10px;overflow:hidden}.bar i{display:block;height:100%;background:var(--secondary);border-radius:10px}.news-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:26px}.news-main{padding:28px}.news-main h3{font-size:25px;line-height:1.45;margin:13px 0}.news-main p,.news-item p{color:var(--muted);margin:5px 0 14px}.news-list{border-top:1px solid var(--border)}.news-item{display:grid;grid-template-columns:95px 1fr auto;gap:17px;align-items:center;padding:17px 0;border-bottom:1px solid var(--border)}.date{font-size:13px;color:var(--accent);font-weight:700}.news-item h3{font-size:17px;margin:0}.news-item p{font-size:14px;margin:3px 0 0}.small-btn{color:var(--primary);font-size:13px;font-weight:700;white-space:nowrap}.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.quote{padding:25px}.quote p{color:#455f70;margin:0 0 18px}.person{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}.avatar{width:35px;height:35px;border-radius:50%;background:#d8edf1;color:var(--primary-dark);display:grid;place-items:center;font-weight:800}.security{display:grid;grid-template-columns:1.2fr .8fr;gap:35px;align-items:center}.safe-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.safe-card{padding:20px}.safe-card b{display:block;margin-bottom:5px;color:var(--primary-dark)}.safe-card span{font-size:14px;color:var(--muted)}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.faq-item{padding:20px 23px}.faq-item summary{cursor:pointer;font-weight:700;color:#21465f;list-style:none;position:relative;padding-right:20px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--primary)}.faq-item[open] summary:after{content:"−"}.faq-item p{font-size:14px;color:var(--muted);margin:14px 0 0}.subscribe{padding:31px;display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:center}.subscribe h2{margin:0;font-size:27px}.subscribe p{color:var(--muted);margin:7px 0 0}.form-row{display:flex;gap:9px}.form-row input{height:47px;border:1px solid var(--border);border-radius:var(--r1);padding:0 14px;flex:1;box-shadow:none}.form-row input:focus{border-color:var(--primary);outline:3px solid #d9edf9}.cta{padding:55px 0;background:var(--primary-dark);color:#fff}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}.cta h2{font-size:32px;margin:0 0 8px}.cta p{margin:0;color:#cfe2ee}.cta .button{background:#fff;color:var(--primary-dark)}.footer{background:#102c40;color:#bbced9;padding:48px 0 22px;font-size:14px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:30px;padding-bottom:34px}.footer .brand{color:#fff}.footer h3{color:#fff;font-size:16px;margin:0 0 12px}.footer a:hover{color:#fff}.footer-links{display:grid;gap:6px}.copyright{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;font-size:13px;color:#93aebd}.copyright a{color:#dbeaf1}.float-cta{position:fixed;right:20px;bottom:20px;background:var(--accent);color:#fff;padding:11px 18px;border-radius:30px;font-size:14px;font-weight:700;box-shadow:0 8px 20px rgba(136,83,26,.25);z-index:4}.float-cta:hover{background:#c77a25;color:#fff}.button:focus,.nav-cta:focus,a:focus,summary:focus{outline:3px solid #9ed8eb;outline-offset:3px}.button:active,.nav-cta:active{transform:translateY(1px)}@media(max-width:1024px){.main-nav{gap:0}.main-nav a{padding:9px 7px;font-size:13px}.hero-grid{gap:35px}.steps{grid-template-columns:repeat(3,1fr);border-top:0}.step{border-bottom:1px solid var(--border);padding-top:25px}.step:before{top:3px}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:768px){:root{--space:64px}.nav-wrap{min-height:64px;justify-content:space-between}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:12px 24px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:12px}.nav-cta{display:none}.hero{padding:48px 0 58px}.hero-grid,.intro-grid,.feature-grid,.split-content,.news-layout,.security,.subscribe{grid-template-columns:1fr}.visual{min-height:330px}.visual img{height:330px}.visual-panel{left:15px;bottom:18px}.topic-grid,.quote-grid{grid-template-columns:1fr 1fr}.section-head{align-items:start;flex-direction:column;margin-bottom:24px}.section-head h2{font-size:29px}.steps{grid-template-columns:1fr 1fr}.report-grid,.faq-grid{grid-template-columns:1fr}.subscribe{padding:25px}.cta-inner{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:520px){.container{padding:0 17px}.brand{font-size:19px}.hero h1{font-size:37px;letter-spacing:-1px}.hero-lead{font-size:16px}.actions .button{width:100%;text-align:center}.topic-grid,.quote-grid,.safe-list,.steps{grid-template-columns:1fr}.step{border-right:0}.news-item{grid-template-columns:1fr;gap:3px}.news-item .small-btn{display:inline-block}.form-row{flex-direction:column}.form-row .button{width:100%}.footer-grid{grid-template-columns:1fr}.float-cta{right:12px;bottom:12px}}

/* roulang page: category1 */
:root{
 --primary:#1769aa;--primary-dark:#0e4775;--secondary:#159a9c;--accent:#e9983d;
 --bg:#f5f8fb;--surface:#fff;--text:#182b3a;--muted:#657787;--border:#dce7ef;
 --shadow:0 12px 34px rgba(27,65,94,.09);--shadow-hover:0 18px 42px rgba(27,65,94,.16);
 --r1:8px;--r2:16px;--r3:24px;--container:1220px;--space:76px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.85}
a{color:inherit;text-decoration:none;transition:.25s}
img{display:block;max-width:100%}
button,input{font:inherit}
.container{max-width:var(--container);margin:auto;padding:0 24px}
.site-header{position:relative;background:#fff;border-bottom:1px solid var(--border);z-index:5}
.nav-wrap{min-height:72px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;min-width:150px;color:var(--primary-dark);font-size:22px;font-weight:800;letter-spacing:-1px}
.brand-mark{width:31px;height:31px;border:3px solid var(--secondary);border-radius:50%;position:relative}
.brand-mark:after{content:"";position:absolute;width:11px;height:3px;background:var(--primary);right:-7px;top:11px;transform:rotate(-35deg)}
.main-nav{display:flex;align-items:center;gap:4px;flex:1}
.main-nav a{padding:10px 13px;border-radius:var(--r1);font-size:14px;color:#506575;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:var(--primary);background:#edf6fc}
.nav-cta,.button.primary{background:var(--primary);color:#fff;border-radius:var(--r1);padding:11px 18px;font-weight:700;box-shadow:0 6px 14px rgba(23,105,170,.18)}
.nav-cta:hover,.button.primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
.menu-toggle{display:none;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:var(--r1);color:var(--primary)}
.breadcrumb{padding:27px 0 10px;color:var(--muted);font-size:13px}
.breadcrumb a{color:var(--primary)}
.page-banner{padding:20px 0 64px;background:linear-gradient(110deg,#f5f9fc,#e8f3f8);border-bottom:1px solid #e1edf3}
.banner-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);background:#e5f2fb;border-radius:30px;padding:5px 12px;font-size:13px;font-weight:700}
.page-banner h1{font-size:clamp(36px,5vw,58px);line-height:1.25;letter-spacing:-2px;margin:17px 0 16px;color:#102b42}
.banner-lead{font-size:18px;color:#526b7d;max-width:700px}
.banner-image{height:290px;width:100%;object-fit:cover;border-radius:var(--r3);box-shadow:var(--shadow-hover)}
.update-line{margin-top:18px;color:var(--muted);font-size:13px}
.section{padding:var(--space) 0}
.section.alt{background:#fff}
.section-head{margin-bottom:30px}
.section-head h2{font-size:34px;line-height:1.3;margin:0;color:#15344b}
.section-head p{max-width:740px;color:var(--muted);margin:9px 0 0}
.read-layout{display:grid;grid-template-columns:255px 1fr;gap:42px;align-items:start}
.toc{position:sticky;top:20px;background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:22px;box-shadow:var(--shadow)}
.toc h3{font-size:17px;margin:0 0 12px;color:var(--primary-dark)}
.toc a{display:block;padding:9px 0;border-bottom:1px dashed var(--border);font-size:14px;color:var(--muted)}
.toc a:hover{color:var(--primary)}
.article{background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:38px 44px;box-shadow:var(--shadow)}
.article h2{font-size:28px;color:#15344b;margin:0 0 15px}
.article h3{font-size:21px;color:var(--primary-dark);margin:30px 0 8px}
.article p{color:#4e6473;margin:0 0 17px}
.article strong{color:#234f6d}
.rule-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}
.rule-card{padding:22px;background:#f7fbfd;border:1px solid var(--border);border-radius:var(--r2)}
.rule-card b{display:block;color:var(--primary-dark);font-size:18px;margin-bottom:7px}
.rule-card span{font-size:14px;color:var(--muted)}
.note{margin:24px 0;padding:18px 22px;border-left:4px solid var(--accent);background:#fff8ee;color:#6c563d;border-radius:0 var(--r1) var(--r1) 0}
.term-layout{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.term-card{background:var(--surface);padding:25px;border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);transition:.25s}
.term-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.term-card .number{color:var(--secondary);font-size:13px;font-weight:800}
.term-card h3{font-size:20px;margin:9px 0 6px;color:#21465f}
.term-card p{color:var(--muted);font-size:14px;margin:0}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-panel{padding:28px;border-radius:var(--r2);border:1px solid var(--border);background:#fff}
.compare-panel.blue{background:#edf7fc}
.compare-panel h3{margin:0 0 12px;color:var(--primary-dark);font-size:22px}
.compare-panel ul{margin:0;padding-left:20px;color:var(--muted)}
.compare-panel li{padding:5px 0}
.timeline{position:relative;margin:16px 0 0 12px;padding-left:30px;border-left:2px solid #b9d9e8}
.timeline-item{position:relative;padding:0 0 28px}
.timeline-item:before{content:"";position:absolute;left:-39px;top:8px;width:15px;height:15px;border-radius:50%;background:var(--secondary);border:4px solid #e0f2f2}
.timeline-item h3{font-size:19px;margin:0 0 5px;color:#21465f}
.timeline-item p{margin:0;color:var(--muted)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.faq-item{padding:20px 23px;background:#fff;border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;font-weight:700;color:#21465f;list-style:none;position:relative;padding-right:20px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--primary)}
.faq-item[open] summary:after{content:"−"}
.faq-item p{font-size:14px;color:var(--muted);margin:14px 0 0}
.related{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
.related-card{background:#fff;border:1px solid var(--border);border-radius:var(--r2);overflow:hidden;box-shadow:var(--shadow)}
.related-card img{height:190px;width:100%;object-fit:cover}
.related-card .inside{padding:22px}
.related-card h3{font-size:21px;margin:8px 0}
.related-card p{color:var(--muted);font-size:14px;margin:0 0 12px}
.text-link{color:var(--primary);font-weight:700}
.text-link:hover{text-decoration:underline}
.cta{padding:54px 0;background:var(--primary-dark);color:#fff}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:28px}
.cta h2{font-size:30px;margin:0 0 8px}
.cta p{margin:0;color:#d4e6f0;max-width:700px}
.cta .button.outline{background:transparent;border-color:#a9d2e3;color:#fff}
.cta .button.outline:hover{background:#fff;color:var(--primary-dark)}
.footer{padding:52px 0 22px;background:#102b42;color:#d9e7ef}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr .8fr;gap:35px}
.footer .brand{color:#fff;margin-bottom:12px}
.footer p{color:#a9c1ce;font-size:14px;max-width:330px;margin:0}
.footer h3{font-size:15px;color:#fff;margin:3px 0 12px}
.footer-links{display:flex;flex-direction:column;gap:7px}
.footer-links a{font-size:14px;color:#aac1cd}
.footer-links a:hover{color:#fff}
.copyright{border-top:1px solid rgba(255,255,255,.15);margin-top:36px;padding-top:18px;color:#91abb8;font-size:12px}
:focus-visible{outline:3px solid #f0b46d;outline-offset:3px}
@media(max-width:900px){
 .main-nav{gap:0}.main-nav a{padding:9px 7px;font-size:13px}.nav-cta{display:none}
 .banner-grid,.related{grid-template-columns:1fr}.banner-image{height:260px}
 .read-layout{grid-template-columns:210px 1fr;gap:22px}.article{padding:30px}
 .term-layout{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media(max-width:680px){
 .container{padding:0 18px}.nav-wrap{min-height:64px;justify-content:space-between}.menu-toggle{display:block}
 .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:10px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .main-nav.open{display:flex}.main-nav a{padding:12px 14px}
 .page-banner{padding-bottom:42px}.page-banner h1{font-size:38px;letter-spacing:-1px}.banner-lead{font-size:16px}
 .section{padding:54px 0}.section-head h2{font-size:29px}
 .read-layout{display:block}.toc{position:static;margin-bottom:18px}.article{padding:24px 20px}
 .rule-grid,.compare,.faq-grid,.term-layout{grid-template-columns:1fr}.article h2{font-size:25px}
 .cta-inner{display:block}.cta .button{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:430px){
 .brand{font-size:19px}.brand-mark{width:27px;height:27px}.breadcrumb{padding-top:20px}
 .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
 .copyright{line-height:1.8}
}

/* roulang page: category3 */
:root{
      --primary:#1769aa;--primary-dark:#0e4775;--secondary:#159a9c;--accent:#e9983d;
      --bg:#f5f8fb;--surface:#fff;--text:#182b3a;--muted:#657787;--border:#dce7ef;
      --shadow:0 12px 34px rgba(27,65,94,.09);--shadow-hover:0 18px 42px rgba(27,65,94,.16);
      --r1:8px;--r2:16px;--r3:24px;--container:1220px;--space:78px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.85}
    a{color:inherit;text-decoration:none;transition:.25s}
    a:hover{color:var(--primary)}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{width:100%;max-width:var(--container);margin:auto;padding:0 24px}
    .site-header{background:#fff;border-bottom:1px solid var(--border);position:relative;z-index:10}
    .nav-wrap{min-height:72px;display:flex;align-items:center;gap:25px}
    .brand{display:flex;align-items:center;gap:10px;min-width:150px;color:var(--primary-dark);font-size:22px;font-weight:800;letter-spacing:-1px}
    .brand-mark{width:31px;height:31px;border:3px solid var(--secondary);border-radius:50%;position:relative}
    .brand-mark:after{content:"";position:absolute;width:11px;height:3px;background:var(--primary);right:-7px;top:11px;transform:rotate(-35deg)}
    .main-nav{display:flex;align-items:center;gap:3px;flex:1}
    .main-nav a{padding:10px 12px;border-radius:var(--r1);font-size:14px;color:#506575;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:#edf6fc}
    .nav-cta{background:var(--primary);color:#fff;border-radius:var(--r1);padding:11px 17px;font-weight:700;white-space:nowrap}
    .nav-cta:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:var(--r1);color:var(--primary)}
    .page-banner{padding:62px 0 58px;background:linear-gradient(105deg,#f1f8fc,#e6f3f4);position:relative;overflow:hidden}
    .page-banner:after{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(23,105,170,.13);border-radius:50%;right:-120px;top:-180px}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:25px}
    .breadcrumb a{color:var(--primary)}
    .banner-grid{display:grid;grid-template-columns:1.16fr .84fr;gap:55px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);background:#e5f2fb;border-radius:30px;padding:5px 12px;font-size:13px;font-weight:700}
    .page-banner h1{font-size:clamp(36px,5vw,58px);line-height:1.22;letter-spacing:-2px;margin:16px 0 16px;color:#102b42}
    .banner-lead{font-size:18px;color:#526b7d;max-width:720px;margin:0}
    .banner-meta{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:25px}
    .banner-meta strong{display:block;font-size:16px;color:var(--text)}
    .banner-image{height:250px;border-radius:var(--r3);overflow:hidden;box-shadow:var(--shadow-hover);position:relative}
    .banner-image img{width:100%;height:100%;object-fit:cover}
    .banner-image figcaption{position:absolute;left:18px;bottom:15px;color:#fff;background:rgba(14,71,117,.8);padding:5px 11px;border-radius:6px;font-size:13px}
    .section{padding:var(--space) 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:34px;line-height:1.3;margin:0;color:#15344b}
    .section-head p{max-width:650px;color:var(--muted);margin:8px 0 0}
    .reading-layout{display:grid;grid-template-columns:245px 1fr;gap:46px;align-items:start}
    .toc{position:sticky;top:20px;background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:22px;box-shadow:var(--shadow)}
    .toc h3{font-size:17px;margin:0 0 13px;color:var(--primary-dark)}
    .toc a{display:block;padding:8px 0;border-bottom:1px dashed var(--border);font-size:14px;color:var(--muted)}
    .toc a:hover{color:var(--primary);padding-left:4px}
    .article{background:#fff;border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);padding:37px 44px}
    .article h2{font-size:28px;line-height:1.4;margin:0 0 17px;color:#15344b}
    .article h3{font-size:21px;margin:30px 0 8px;color:var(--primary-dark)}
    .article p{margin:12px 0;color:#40596a}
    .article blockquote{margin:25px 0;padding:18px 22px;border-left:4px solid var(--secondary);background:#eef8f7;color:#315e63;border-radius:0 var(--r1) var(--r1) 0}
    .notice{display:flex;gap:16px;align-items:flex-start;background:#fff7ed;border:1px solid #f2d4ae;padding:18px 20px;border-radius:var(--r2);margin-top:23px}
    .notice b{color:#a96520;white-space:nowrap}
    .compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
    .compare-card,.term-card,.flow-step,.faq-item,.news-main,.subscribe{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);transition:.25s}
    .compare-card:hover,.term-card:hover,.flow-step:hover,.news-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .compare-card{padding:26px}
    .compare-card h3{font-size:22px;margin:12px 0 8px;color:var(--primary-dark)}
    .compare-card p,.term-card p{color:var(--muted);margin:0}
    .compare-card ul{list-style:none;padding:0;margin:17px 0 0}
    .compare-card li{padding:8px 0;border-top:1px dashed var(--border);font-size:14px}
    .compare-card li strong{color:var(--text);margin-right:8px}
    .term-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:25px}
    .term-card{padding:25px}
    .term-card h3{font-size:20px;margin:0 0 9px;color:var(--primary-dark)}
    .probability-panel{padding:30px;background:#eaf5fa;border-radius:var(--r2);border:1px solid #cfe5f0}
    .probability-panel h3{margin:0 0 10px;color:var(--primary-dark);font-size:23px}
    .bar-row{display:grid;grid-template-columns:105px 1fr 48px;gap:12px;align-items:center;margin:16px 0;font-size:14px}
    .bar{height:9px;background:#d4e5ec;border-radius:20px;overflow:hidden}
    .bar i{display:block;height:100%;background:var(--secondary);border-radius:20px}
    .bar-row span:last-child{color:var(--primary-dark);font-weight:700;text-align:right}
    .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .flow-step{padding:23px;position:relative}
    .flow-step .num{font-size:30px;color:#b9dbe7;font-weight:800;line-height:1}
    .flow-step h3{font-size:19px;margin:15px 0 7px}
    .flow-step p{font-size:14px;color:var(--muted);margin:0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{padding:20px 23px}
    .faq-item summary{cursor:pointer;font-weight:700;color:#21465f;list-style:none;position:relative;padding-right:22px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--primary)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{font-size:14px;color:var(--muted);margin:14px 0 0}
    .related-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}
    .news-main{padding:28px}
    .news-main img{height:195px;width:100%;object-fit:cover;border-radius:var(--r1);margin-bottom:19px}
    .news-main h3{font-size:24px;line-height:1.45;margin:12px 0 8px}
    .news-main p{color:var(--muted);margin:0 0 18px}
    .news-list{border-top:1px solid var(--border)}
    .news-item{display:grid;grid-template-columns:92px 1fr auto;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--border)}
    .news-item time{font-size:13px;color:var(--accent)}
    .news-item h3{font-size:16px;margin:0}
    .news-item p{font-size:13px;color:var(--muted);margin:3px 0 0}
    .small-btn{color:var(--primary);font-size:13px;font-weight:700;white-space:nowrap}
    .cta{padding:52px 0;background:var(--primary-dark);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:28px}
    .cta h2{font-size:32px;margin:0 0 8px}
    .cta p{margin:0;color:#d9ebf5}
    .button{display:inline-block;border:0;padding:12px 20px;border-radius:var(--r1);font-weight:700}
    .button.primary{background:var(--primary);color:#fff;box-shadow:0 6px 14px rgba(23,105,170,.18)}
    .button.primary:hover{background:#0b568f;color:#fff;transform:translateY(-2px)}
    .button.outline{border:1px solid #a9c9dc;color:var(--primary);background:#fff}
    .button.outline:hover{border-color:var(--primary);background:#eef7fc}
    .cta .button.outline{border-color:#8fc1d4;background:transparent;color:#fff}
    .cta .button.outline:hover{background:#fff;color:var(--primary-dark)}
    .subscribe{padding:25px}
    .subscribe h3{margin:0 0 8px;font-size:20px;color:var(--primary-dark)}
    .subscribe p{font-size:14px;color:var(--muted);margin:0 0 16px}
    .form-row{display:flex;gap:9px}
    .form-row input{height:47px;border:1px solid var(--border);border-radius:var(--r1);padding:0 14px;flex:1;box-shadow:none;min-width:0}
    .form-row input:focus{border-color:var(--primary);outline:3px solid #d9edf9}
    .footer{background:#102b42;color:#c9dbe5;padding:48px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr .9fr;gap:32px}
    .footer .brand{color:#fff;margin-bottom:15px}
    .footer p{font-size:13px;line-height:1.8;color:#aac1ce;max-width:310px}
    .footer h3{font-size:15px;color:#fff;margin:3px 0 12px}
    .footer-links{display:grid;gap:6px;font-size:13px;color:#aac1ce}
    .footer-links a:hover{color:#fff}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:18px;font-size:12px;color:#9bb4c1;line-height:2}
    :focus-visible{outline:3px solid #f0aa4e;outline-offset:3px}
    @media(max-width:1024px){
      .main-nav a{padding-left:8px;padding-right:8px;font-size:13px}
      .nav-cta{padding:10px 12px;font-size:13px}
      .banner-grid{gap:30px}.reading-layout{gap:25px}.article{padding:30px}
    }
    @media(max-width:768px){
      .nav-wrap{min-height:66px;justify-content:space-between}.menu-toggle{display:block}
      .main-nav{display:none;position:absolute;left:0;right:0;top:66px;padding:10px 24px 16px;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.is-open{display:flex}.main-nav a{padding:12px 14px}
      .nav-cta{display:none}.page-banner{padding:42px 0}.banner-grid,.reading-layout,.term-layout,.related-grid{grid-template-columns:1fr}
      .banner-image{height:220px}.toc{position:static}.section{padding:55px 0}
      .compare-grid,.faq-grid{grid-template-columns:1fr}.flow{grid-template-columns:1fr 1fr}
      .section-head{display:block}.section-head h2{font-size:29px}.section-head p{margin-top:10px}
      .cta-inner{display:block}.cta .button{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      .container{padding:0 17px}.brand{font-size:20px}.page-banner h1{font-size:37px;letter-spacing:-1px}
      .banner-lead{font-size:16px}.article{padding:24px 19px}.article h2{font-size:24px}
      .bar-row{grid-template-columns:78px 1fr 40px;gap:7px}.flow{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr;gap:3px}.news-item .small-btn{display:inline-block;margin-top:5px}
      .form-row{display:block}.form-row .button{width:100%;margin-top:9px}.footer-grid{grid-template-columns:1fr}
      .copyright{font-size:11px}
    }

/* roulang page: category2 */
:root{
      --primary:#1769aa;
      --primary-dark:#0e4775;
      --secondary:#159a9c;
      --accent:#e9983d;
      --bg:#f5f8fb;
      --surface:#fff;
      --text:#182b3a;
      --muted:#657787;
      --border:#dce7ef;
      --shadow:0 12px 34px rgba(27,65,94,.09);
      --shadow-hover:0 18px 42px rgba(27,65,94,.16);
      --r1:8px;
      --r2:16px;
      --r3:24px;
      --container:1220px;
      --space:82px
    }
    html{scroll-behavior:smooth}
    *,*:before,*:after{box-sizing:border-box}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.85}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{max-width:var(--container);margin:auto;padding:0 24px}
    .site-header{position:relative;background:#fff;border-bottom:1px solid var(--border);z-index:5}
    .nav-wrap{min-height:72px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:10px;min-width:150px;color:var(--primary-dark);font-size:22px;font-weight:800;letter-spacing:-1px}
    .brand-mark{width:31px;height:31px;border:3px solid var(--secondary);border-radius:50%;position:relative;display:inline-block}
    .brand-mark:after{content:"";position:absolute;width:11px;height:3px;background:var(--primary);right:-7px;top:11px;transform:rotate(-35deg)}
    .main-nav{display:flex;align-items:center;gap:4px;flex:1}
    .main-nav a{padding:10px 13px;border-radius:var(--r1);font-size:14px;color:#506575;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:#edf6fc}
    .nav-cta,.button.primary{background:var(--primary);color:#fff;border-radius:var(--r1);padding:11px 18px;font-weight:700;box-shadow:0 6px 14px rgba(23,105,170,.18)}
    .nav-cta:hover,.button.primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:var(--r1);color:var(--primary)}
    .page-hero{padding:56px 0 58px;background:linear-gradient(105deg,#f4f9fc,#e8f4f7);border-bottom:1px solid #e2edf2}
    .crumbs{font-size:13px;color:var(--muted);margin-bottom:22px}
    .crumbs a{color:var(--primary)}
    .hero-wide{display:grid;grid-template-columns:1.06fr .94fr;gap:54px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);background:#e5f2fb;border-radius:30px;padding:5px 12px;font-size:13px;font-weight:700}
    h1,h2,h3{color:#15344b;line-height:1.32}
    h1{font-size:clamp(36px,5vw,58px);letter-spacing:-2px;margin:15px 0 18px}
    h1 span{color:var(--primary)}
    .hero-lead{font-size:18px;color:#526b7d;max-width:710px;margin:0}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:27px 0 22px}
    .button{display:inline-block;border:0;padding:12px 20px;border-radius:var(--r1);font-weight:700;cursor:pointer}
    .button.outline{border:1px solid #a9c9dc;color:var(--primary);background:#fff}
    .button.outline:hover{border-color:var(--primary);background:#eef7fc}
    .update-note{font-size:13px;color:var(--muted)}
    .hero-panel{background:#fff;border:1px solid var(--border);border-radius:var(--r3);box-shadow:var(--shadow-hover);padding:25px;position:relative;overflow:hidden}
    .hero-panel:before{content:"";position:absolute;right:-50px;top:-65px;width:180px;height:180px;border-radius:50%;background:#e5f4f4}
    .panel-top{display:flex;justify-content:space-between;align-items:center;position:relative}
    .panel-title{font-size:13px;color:var(--muted)}
    .status{color:#247d7d;background:#e7f7f5;border-radius:20px;padding:4px 9px;font-size:12px;font-weight:700}
    .data-block{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin:23px 0}
    .data-cell{background:#f6f9fb;border-radius:var(--r1);padding:15px}
    .data-cell small{display:block;color:var(--muted);font-size:12px}
    .data-cell strong{font-size:25px;color:var(--primary-dark);display:block}
    .bar-row{margin:15px 0}
    .bar-label{display:flex;justify-content:space-between;font-size:13px;color:#526b7d;margin-bottom:6px}
    .bar{height:8px;border-radius:20px;background:#e7eef3;overflow:hidden}
    .bar i{display:block;height:100%;background:var(--secondary);border-radius:20px}
    .bar i.blue{background:var(--primary)}
    .section{padding:var(--space) 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
    .section-head h2{font-size:34px;margin:0}
    .section-head p{max-width:650px;color:var(--muted);margin:8px 0 0}
    .text-link{color:var(--primary);font-weight:700;white-space:nowrap}
    .text-link:hover{text-decoration:underline}
    .intro-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:42px;align-items:start}
    .intro-copy{font-size:17px;color:#496274}
    .intro-copy p{margin:0 0 19px}
    .note-card{background:#eef7fa;border-left:4px solid var(--secondary);padding:22px 25px;border-radius:0 var(--r2) var(--r2) 0}
    .note-card b{display:block;color:var(--primary-dark);margin-bottom:7px}
    .note-card span{font-size:14px;color:var(--muted)}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .metric{background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:23px;box-shadow:var(--shadow)}
    .metric:hover,.observation:hover,.article:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .metric strong{display:block;font-size:28px;color:var(--primary-dark);margin:5px 0}
    .metric span{font-size:13px;color:var(--muted)}
    .dimension-grid{display:grid;grid-template-columns:1.16fr .84fr;gap:24px}
    .dimension-card,.process-card,.observation,.article,.faq-item,.subscribe{background:#fff;border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow)}
    .dimension-card{padding:30px}
    .dimension-card h3{font-size:23px;margin:0 0 11px}
    .dimension-card p{color:var(--muted);margin:0 0 19px}
    .indicator-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .indicator{padding:14px;border:1px solid #e1ebf0;border-radius:var(--r1);background:#fbfdfe}
    .indicator b{display:block;color:var(--primary-dark);font-size:15px}
    .indicator span{font-size:13px;color:var(--muted)}
    .photo-card{min-height:100%;overflow:hidden;position:relative;border-radius:var(--r2);box-shadow:var(--shadow)}
    .photo-card img{width:100%;height:100%;min-height:330px;object-fit:cover}
    .photo-card .photo-caption{position:absolute;left:0;right:0;bottom:0;padding:34px 24px 22px;color:#fff;background:linear-gradient(transparent,rgba(11,44,67,.82))}
    .photo-caption h3{color:#fff;margin:0 0 5px;font-size:22px}
    .photo-caption p{margin:0;font-size:14px;color:#e7f3f8}
    .observation-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px}
    .observation-list{display:flex;flex-direction:column;gap:13px}
    .observation{padding:20px 23px;display:grid;grid-template-columns:105px 1fr auto;gap:16px;align-items:center;transition:.25s}
    .observation .date{font-size:13px;color:var(--accent);font-weight:700}
    .observation h3{font-size:17px;margin:0 0 3px}
    .observation p{font-size:13px;color:var(--muted);margin:0}
    .badge{display:inline-block;background:#edf6fc;color:var(--primary);padding:4px 9px;border-radius:20px;font-size:12px;white-space:nowrap}
    .side-report{padding:26px;background:#f0f8f8;border:1px solid #d5eceb;border-radius:var(--r2)}
    .side-report h3{margin:0 0 12px;font-size:22px}
    .side-report p{color:#547076;font-size:14px;margin:0 0 15px}
    .side-report ul{list-style:none;padding:0;margin:0}
    .side-report li{padding:10px 0;border-bottom:1px dashed #c6dfdf;color:#43636a;font-size:14px}
    .side-report li:last-child{border-bottom:0}
    .side-report li:before{content:"＋";color:var(--secondary);font-weight:bold;margin-right:7px}
    .process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .process-card{padding:24px 20px;position:relative}
    .process-card em{font-style:normal;color:var(--secondary);font-size:13px;font-weight:800}
    .process-card h3{font-size:19px;margin:12px 0 7px}
    .process-card p{font-size:14px;color:var(--muted);margin:0}
    .article-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .article{padding:28px;transition:.25s}
    .article h3{font-size:23px;margin:13px 0 10px}
    .article p{color:var(--muted);margin:0 0 14px}
    .article img{width:100%;height:200px;object-fit:cover;border-radius:var(--r1);margin-bottom:18px}
    .article-meta{font-size:13px;color:var(--muted)}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{padding:20px 23px}
    .faq-item summary{cursor:pointer;font-weight:700;color:#21465f;list-style:none;position:relative;padding-right:22px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--primary)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{font-size:14px;color:var(--muted);margin:14px 0 0}
    .cta{padding:58px 0;background:var(--primary-dark);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{color:#fff;font-size:32px;margin:0 0 8px}
    .cta p{color:#d7e9f3;margin:0;max-width:680px}
    .cta .button.outline{background:transparent;color:#fff;border-color:#8bbbd4}
    .subscribe{padding:24px;background:#f8fbfd;box-shadow:none}
    .subscribe h3{font-size:20px;margin:0 0 7px}
    .subscribe p{font-size:14px;color:var(--muted);margin:0 0 15px}
    .form-row{display:flex;gap:9px}
    .form-row input{height:47px;border:1px solid var(--border);border-radius:var(--r1);padding:0 14px;flex:1;box-shadow:none}
    .form-row input:focus{border-color:var(--primary);outline:3px solid #d9edf9}
    .footer{background:#102f43;color:#d5e5ed;padding:55px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer .brand{color:#fff;margin-bottom:15px}
    .footer p{font-size:14px;line-height:1.8;color:#a9c3cf;margin:0;max-width:330px}
    .footer h3{color:#fff;font-size:16px;margin:0 0 13px}
    .footer-links{display:flex;flex-direction:column;gap:8px;font-size:14px;color:#a9c3cf}
    .footer-links a:hover{color:#fff}
    .copyright{border-top:1px solid rgba(210,235,245,.18);margin-top:38px;padding-top:20px;color:#98b3c0;font-size:12px}
    :focus-visible{outline:3px solid #f2b36b;outline-offset:3px}
    @media(max-width:1024px){
      .main-nav{gap:0}.main-nav a{padding:9px 8px;font-size:13px}
      .hero-wide,.dimension-grid,.observation-grid{grid-template-columns:1fr 1fr;gap:28px}
      .process-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .nav-wrap{min-height:66px;justify-content:space-between}.menu-toggle{display:block}
      .main-nav{display:none;position:absolute;left:16px;right:16px;top:65px;background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.is-open{display:flex}.main-nav a{padding:12px 14px}.nav-cta{display:none}
      .hero-wide,.intro-grid,.dimension-grid,.observation-grid,.article-layout{grid-template-columns:1fr}
      .page-hero{padding:38px 0 45px}.hero-panel{margin-top:4px}
      .section{padding:58px 0}.section-head{display:block;margin-bottom:25px}.section-head h2{font-size:29px}
      .faq-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}
      .cta-inner{display:block}.cta .button{margin-top:22px}
    }
    @media(max-width:520px){
      .container{padding:0 18px}.brand{font-size:20px;min-width:auto}
      h1{font-size:37px;letter-spacing:-1px}.hero-lead{font-size:16px}
      .hero-actions .button{width:100%;text-align:center}.data-block,.indicator-list{grid-template-columns:1fr}
      .observation{grid-template-columns:1fr;gap:5px}.observation .small-btn{margin-top:5px}
      .process-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.form-row{display:block}.form-row .button{width:100%;margin-top:9px}
      .copyright{line-height:2}
    }

/* roulang page: category4 */
:root{
      --primary:#1769aa;--primary-dark:#0e4775;--secondary:#159a9c;--accent:#e9983d;
      --bg:#f5f8fb;--surface:#fff;--text:#182b3a;--muted:#657787;--border:#dce7ef;
      --shadow:0 12px 34px rgba(27,65,94,.09);--shadow-hover:0 18px 42px rgba(27,65,94,.16);
      --r1:8px;--r2:16px;--r3:24px;--container:1220px;--space:76px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.85}
    a{color:inherit;text-decoration:none;transition:.25s}
    a:hover{color:var(--primary)}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{max-width:var(--container);margin:auto;padding:0 24px}
    .site-header{position:relative;background:#fff;border-bottom:1px solid var(--border);z-index:5}
    .nav-wrap{min-height:72px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:10px;min-width:150px;color:var(--primary-dark);font-size:22px;font-weight:800;letter-spacing:-1px}
    .brand-mark{width:31px;height:31px;border:3px solid var(--secondary);border-radius:50%;position:relative;display:inline-block}
    .brand-mark:after{content:"";position:absolute;width:11px;height:3px;background:var(--primary);right:-7px;top:11px;transform:rotate(-35deg)}
    .main-nav{display:flex;align-items:center;gap:4px;flex:1}
    .main-nav a{padding:10px 13px;border-radius:var(--r1);font-size:14px;color:#506575;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:#edf6fc}
    .nav-cta,.button.primary{background:var(--primary);color:#fff;border-radius:var(--r1);padding:11px 18px;font-weight:700;box-shadow:0 6px 14px rgba(23,105,170,.18)}
    .nav-cta:hover,.button.primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:var(--r1);color:var(--primary)}
    .page-banner{padding:72px 0 62px;background:linear-gradient(100deg,rgba(245,249,252,.97),rgba(231,243,248,.93)),url("/assets/images/backpic/back-2.webp") center/cover}
    .crumb{font-size:13px;color:var(--muted);margin-bottom:24px}
    .crumb a{color:var(--primary)}
    .banner-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);background:#e5f2fb;border-radius:30px;padding:5px 12px;font-size:13px;font-weight:700}
    h1,h2,h3{color:#15344b;line-height:1.35}
    h1{font-size:clamp(36px,5vw,58px);letter-spacing:-2px;margin:15px 0 18px}
    h2{font-size:34px;margin:0 0 15px}
    h3{font-size:21px;margin:0 0 9px}
    .banner-lead{font-size:18px;color:#526b7d;max-width:700px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:27px}
    .button{display:inline-block;border:0;padding:12px 20px;border-radius:var(--r1);font-weight:700}
    .button.outline{border:1px solid #a9c9dc;color:var(--primary);background:#fff}
    .button.outline:hover{border-color:var(--primary);background:#eef7fc}
    .banner-photo{position:relative}
    .banner-photo img{height:280px;width:100%;object-fit:cover;border-radius:var(--r3);box-shadow:var(--shadow-hover)}
    .update-card{position:absolute;right:18px;bottom:-20px;background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:17px 20px;box-shadow:var(--shadow);min-width:220px}
    .update-card small{display:block;color:var(--muted);font-size:12px}
    .update-card strong{color:var(--primary-dark);font-size:17px}
    .section{padding:var(--space) 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head p{max-width:680px;color:var(--muted);margin:0}
    .section-kicker{font-size:13px;letter-spacing:1px;color:var(--secondary);font-weight:800;margin-bottom:8px}
    .filter-bar{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0 30px}
    .filter-bar button{border:1px solid var(--border);background:#fff;border-radius:30px;padding:8px 17px;color:var(--muted);cursor:pointer}
    .filter-bar button:hover,.filter-bar button.active{color:#fff;background:var(--primary);border-color:var(--primary)}
    .timeline{position:relative;margin-left:13px;padding-left:39px;border-left:2px solid #c9e0ea}
    .time-item{position:relative;display:grid;grid-template-columns:142px 1fr;gap:24px;padding:0 0 30px}
    .time-item:before{content:"";position:absolute;left:-47px;top:5px;width:14px;height:14px;background:var(--secondary);border:4px solid #e6f5f5;border-radius:50%}
    .time-date{font-weight:800;color:var(--primary-dark);font-size:15px}
    .event-card{background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:21px 24px;box-shadow:var(--shadow);transition:.25s}
    .event-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .event-top{display:flex;justify-content:space-between;gap:15px;align-items:start}
    .event-card h3{font-size:21px}
    .status{padding:4px 10px;border-radius:20px;background:#e8f6f2;color:#157c73;font-size:12px;font-weight:700;white-space:nowrap}
    .status.wait{background:#fff3e3;color:#a66619}
    .event-meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:14px;margin:10px 0}
    .event-card p{color:var(--muted);margin:6px 0 14px}
    .event-link{color:var(--primary);font-weight:700;font-size:14px}
    .observe-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:24px;align-items:stretch}
    .observe-copy{background:#eaf5fa;border-radius:var(--r2);padding:32px}
    .observe-copy p{color:#526b7d}
    .bullet-list{padding:0;margin:22px 0 0;list-style:none}
    .bullet-list li{padding:10px 0 10px 27px;border-bottom:1px dashed #c9dce6;position:relative}
    .bullet-list li:before{content:"✓";position:absolute;left:0;color:var(--secondary);font-weight:bold}
    .dimension-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .dimension{background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:22px;box-shadow:var(--shadow)}
    .dimension .num{font-size:13px;color:var(--accent);font-weight:800}
    .dimension p{font-size:14px;color:var(--muted);margin:6px 0 0}
    .feature-image{display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;align-items:center}
    .feature-image img{width:100%;height:355px;object-fit:cover;border-radius:var(--r2);box-shadow:var(--shadow)}
    .feature-image p{color:var(--muted)}
    .reading-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:step}
    .step{background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:23px;box-shadow:var(--shadow);position:relative}
    .step:before{counter-increment:step;content:"0" counter(step);color:#b6d9e9;font-size:30px;font-weight:800}
    .step p{color:var(--muted);font-size:14px;margin:7px 0 0}
    .notice{border-left:4px solid var(--accent);background:#fff7ed;padding:20px 24px;border-radius:var(--r1);color:#75532e;margin-top:25px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);padding:20px 23px}
    .faq-item summary{cursor:pointer;font-weight:700;color:#21465f;list-style:none;position:relative;padding-right:20px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--primary)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{font-size:14px;color:var(--muted);margin:14px 0 0}
    .cta{padding:54px 0;background:var(--primary-dark);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{color:#fff;margin:0 0 8px}
    .cta p{margin:0;color:#d7e9f3;max-width:690px}
    .cta .button.outline{background:transparent;color:#fff;border-color:#9dc7dc}
    .footer{background:#102b42;color:#c8d7e0;padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
    .footer .brand{color:#fff;margin-bottom:12px}
    .footer p{font-size:14px;line-height:1.8;color:#a9c0cd;max-width:310px}
    .footer h3{font-size:15px;color:#fff;margin:0 0 13px}
    .footer-links{display:grid;gap:7px;font-size:14px}
    .footer-links a:hover{color:#fff}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:18px;font-size:12px;color:#98b1bf}
    :focus-visible{outline:3px solid #f0b36b;outline-offset:3px}
    @media(max-width:900px){
      .main-nav{gap:0}.main-nav a{padding:9px 8px;font-size:13px}.nav-cta{display:none}
      .banner-grid,.observe-grid,.feature-image{grid-template-columns:1fr}
      .banner-photo{max-width:650px}.reading-steps{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:700px){
      :root{--space:52px}
      .nav-wrap{min-height:64px;justify-content:space-between}.menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:10px 24px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}.main-nav a{padding:12px 14px}
      .page-banner{padding:45px 0 55px}.banner-photo img{height:230px}.update-card{position:relative;right:auto;bottom:auto;margin:-25px 16px 0}
      h1{font-size:38px}.section-head,.cta-inner{display:block}.section-head h2{font-size:29px}.section-head p{margin-top:10px}
      .time-item{grid-template-columns:1fr;gap:6px}.timeline{padding-left:27px}.time-item:before{left:-35px}
      .dimension-grid,.faq-grid{grid-template-columns:1fr}.reading-steps{grid-template-columns:1fr}
      .feature-image img{height:250px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.copyright{line-height:1.9}
    }
    @media(max-width:480px){
      .container{padding:0 18px}.brand{font-size:20px;min-width:auto}.footer-grid{grid-template-columns:1fr}
      .event-top{display:block}.status{display:inline-block;margin-top:7px}.hero-actions .button{width:100%;text-align:center}
    }

/* roulang page: category5 */
:root{
      --primary:#1769aa;--primary-dark:#0e4775;--secondary:#159a9c;--accent:#e9983d;
      --bg:#f5f8fb;--surface:#fff;--text:#182b3a;--muted:#657787;--border:#dce7ef;
      --shadow:0 12px 34px rgba(27,65,94,.09);--shadow-hover:0 18px 42px rgba(27,65,94,.16);
      --r1:8px;--r2:16px;--r3:24px;--container:1220px;--space:74px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.85}
    a{color:inherit;text-decoration:none;transition:.25s}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{max-width:var(--container);margin:auto;padding:0 24px}
    .site-header{position:relative;background:#fff;border-bottom:1px solid var(--border);z-index:5}
    .nav-wrap{min-height:72px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:10px;min-width:150px;color:var(--primary-dark);font-size:22px;font-weight:800;letter-spacing:-1px}
    .brand-mark{width:31px;height:31px;border:3px solid var(--secondary);border-radius:50%;position:relative;display:inline-block}
    .brand-mark:after{content:"";position:absolute;width:11px;height:3px;background:var(--primary);right:-7px;top:11px;transform:rotate(-35deg)}
    .main-nav{display:flex;align-items:center;gap:4px;flex:1}
    .main-nav a{padding:10px 13px;border-radius:var(--r1);font-size:14px;color:#506575;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:#edf6fc}
    .nav-cta{background:var(--primary);color:#fff;border-radius:var(--r1);padding:11px 18px;font-weight:700;white-space:nowrap}
    .nav-cta:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:var(--r1);color:var(--primary)}
    .page-banner{padding:58px 0 62px;background:linear-gradient(102deg,#edf6fb 0%,#f7fbfc 58%,#e8f5f3 100%)}
    .banner-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:46px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);background:#e5f2fb;border-radius:30px;padding:5px 12px;font-size:13px;font-weight:700}
    .page-banner h1{font-size:clamp(36px,5vw,58px);line-height:1.2;letter-spacing:-2px;margin:17px 0 18px;color:#102b42}
    .lead{font-size:18px;color:#526b7d;max-width:680px;margin:0}
    .crumbs{font-size:13px;color:var(--muted);margin-bottom:16px}
    .crumbs a{color:var(--primary)}
    .banner-image{height:280px;width:100%;object-fit:cover;border-radius:var(--r3);box-shadow:var(--shadow-hover)}
    .section{padding:var(--space) 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:34px;line-height:1.3;margin:0;color:#15344b}
    .section-head p{max-width:650px;color:var(--muted);margin:8px 0 0}
    .text-link{color:var(--primary);font-weight:700}
    .text-link:hover{text-decoration:underline}
    .reading-layout{display:grid;grid-template-columns:270px 1fr;gap:48px;align-items:start}
    .toc{position:sticky;top:20px;background:#eef6fb;border:1px solid #d8eaf4;border-radius:var(--r2);padding:23px}
    .toc h3{font-size:17px;margin:0 0 12px;color:var(--primary-dark)}
    .toc a{display:block;padding:8px 0;border-bottom:1px dashed #c9dce8;color:#526b7d;font-size:14px}
    .toc a:hover{color:var(--primary)}
    .article{background:#fff;border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);padding:38px 44px}
    .article h2{font-size:27px;color:var(--primary-dark);margin:0 0 15px}
    .article h3{font-size:20px;color:#21465f;margin:28px 0 8px}
    .article p{color:#4f6473;margin:0 0 18px}
    .article + .article{margin-top:20px}
    .notice{display:flex;gap:15px;align-items:flex-start;background:#fff7ec;border:1px solid #f1d6af;border-left:4px solid var(--accent);border-radius:var(--r1);padding:18px 20px;margin:22px 0;color:#66533d}
    .notice strong{color:#a96520;white-space:nowrap}
    .principle-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
    .principles{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .principle-card,.check-card,.boundary-card,.faq-item,.timeline-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);transition:.25s}
    .principle-card:hover,.check-card:hover,.boundary-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .principle-card{padding:23px}
    .number{display:inline-grid;place-items:center;width:32px;height:32px;background:#e6f3fa;color:var(--primary);border-radius:50%;font-weight:800;font-size:14px}
    .principle-card h3{font-size:19px;margin:13px 0 6px}
    .principle-card p,.check-card p,.boundary-card p{font-size:14px;color:var(--muted);margin:0}
    .side-photo{height:100%;min-height:350px;object-fit:cover;border-radius:var(--r2);box-shadow:var(--shadow)}
    .check-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:38px;align-items:center}
    .check-layout h2{font-size:32px;line-height:1.35;margin:0 0 15px}
    .check-layout>div>p{color:var(--muted)}
    .check-list{display:grid;gap:12px}
    .check-card{padding:18px 20px;display:flex;gap:15px;align-items:flex-start}
    .check-card b{display:block;color:var(--primary-dark);margin-bottom:3px}
    .check-icon{width:23px;height:23px;border-radius:6px;background:#dff3ee;color:var(--secondary);display:grid;place-items:center;font-weight:800;flex:none;margin-top:3px}
    .boundary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .boundary-card{padding:25px}
    .boundary-card h3{font-size:20px;margin:12px 0 7px}
    .boundary-card .tag{font-size:11px;padding:3px 9px}
    .timeline{border-left:2px solid #bfe0e2;margin:10px 0 0 15px;padding-left:28px;display:grid;gap:20px}
    .timeline-item{padding:22px 25px;position:relative}
    .timeline-item:before{content:"";position:absolute;left:-39px;top:27px;width:18px;height:18px;border:4px solid var(--bg);background:var(--secondary);border-radius:50%}
    .timeline-item h3{margin:0 0 5px;font-size:20px;color:var(--primary-dark)}
    .timeline-item p{margin:0;color:var(--muted);font-size:15px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{padding:19px 22px}
    .faq-item summary{cursor:pointer;font-weight:700;color:#21465f;list-style:none;position:relative;padding-right:22px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--primary)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{font-size:14px;color:var(--muted);margin:13px 0 0}
    .related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .related-card{background:#fff;border:1px solid var(--border);border-radius:var(--r2);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
    .related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .related-card img{height:145px;width:100%;object-fit:cover}
    .related-card div{padding:19px}
    .related-card h3{font-size:19px;margin:8px 0}
    .related-card p{font-size:14px;color:var(--muted);margin:0 0 13px}
    .cta{padding:52px 0;background:var(--primary-dark);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:28px}
    .cta h2{font-size:31px;margin:0 0 8px;color:#fff}
    .cta p{margin:0;color:#cce0ee;max-width:690px}
    .button{display:inline-block;border:0;padding:12px 20px;border-radius:var(--r1);font-weight:700}
    .button.primary{background:var(--primary);color:#fff;box-shadow:0 6px 14px rgba(23,105,170,.18)}
    .button.primary:hover{background:#0a5a92;color:#fff;transform:translateY(-2px)}
    .button.outline{border:1px solid #a9c9dc;color:var(--primary);background:#fff}
    .button.outline:hover{border-color:var(--primary);background:#eef7fc}
    .cta .button.outline{color:#fff;background:transparent;border-color:#8db6ce}
    .cta .button.outline:hover{background:#fff;color:var(--primary)}
    .footer{background:#102b42;color:#c2d4df;padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer .brand{color:#fff}
    .footer p{font-size:14px;line-height:1.8;max-width:330px}
    .footer h3{font-size:16px;color:#fff;margin:2px 0 12px}
    .footer-links{display:grid;gap:7px;font-size:14px}
    .footer-links a:hover{color:#fff}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:18px;font-size:13px;color:#9fb7c5}
    :focus-visible{outline:3px solid #f0ad63;outline-offset:3px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 8px;font-size:13px}.nav-wrap{gap:12px}
      .reading-layout{grid-template-columns:220px 1fr;gap:25px}
      .article{padding:30px}.principle-grid,.check-layout{grid-template-columns:1fr}
    }
    @media(max-width:768px){
      .nav-wrap{min-height:65px;justify-content:space-between}.menu-toggle{display:block}
      .main-nav{display:none;position:absolute;left:0;right:0;top:65px;background:#fff;padding:10px 24px 18px;border-bottom:1px solid var(--border);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}.main-nav a{padding:12px}.nav-cta{display:none}
      .banner-grid,.reading-layout{grid-template-columns:1fr}.page-banner{padding:42px 0}.banner-image{height:235px}
      .toc{position:static}.article{padding:25px}.principles,.boundary-grid,.faq-grid,.related{grid-template-columns:1fr}
      .section{padding:55px 0}.section-head{display:block}.section-head h2{font-size:29px}
      .side-photo{min-height:250px}.cta-inner{display:block}.cta .button{margin-top:20px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px}
    }
    @media(max-width:520px){
      .container{padding:0 17px}.brand{font-size:19px;min-width:auto}.brand-mark{width:27px;height:27px}
      .page-banner h1{font-size:36px;letter-spacing:-1px}.lead{font-size:16px}
      .article h2{font-size:24px}.principles{display:grid}.footer-grid{grid-template-columns:1fr}.copyright{line-height:2}
    }

/* roulang page: category6 */
:root{
      --primary:#1769aa;--primary-dark:#0e4775;--secondary:#159a9c;--accent:#e9983d;
      --bg:#f5f8fb;--surface:#fff;--text:#182b3a;--muted:#657787;--border:#dce7ef;
      --shadow:0 12px 34px rgba(27,65,94,.09);--shadow-hover:0 18px 42px rgba(27,65,94,.16);
      --r1:8px;--r2:16px;--r3:24px;--container:1220px;--space:72px
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.85}
    a{color:inherit;text-decoration:none;transition:.25s}
    a:hover{color:var(--primary)}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{max-width:var(--container);margin:auto;padding:0 24px}
    .site-header{position:relative;background:#fff;border-bottom:1px solid var(--border);z-index:5}
    .nav-wrap{min-height:72px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:10px;min-width:150px;color:var(--primary-dark);font-size:22px;font-weight:800;letter-spacing:-1px}
    .brand-mark{width:31px;height:31px;border:3px solid var(--secondary);border-radius:50%;position:relative;display:inline-block}
    .brand-mark:after{content:"";position:absolute;width:11px;height:3px;background:var(--primary);right:-7px;top:11px;transform:rotate(-35deg)}
    .main-nav{display:flex;align-items:center;gap:4px;flex:1}
    .main-nav a{padding:10px 13px;border-radius:var(--r1);font-size:14px;color:#506575;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:var(--primary);background:#edf6fc}
    .nav-cta,.button.primary{background:var(--primary);color:#fff;border-radius:var(--r1);padding:11px 18px;font-weight:700;box-shadow:0 6px 14px rgba(23,105,170,.18)}
    .nav-cta:hover,.button.primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:var(--r1);color:var(--primary);cursor:pointer}
    .page-banner{padding:62px 0 66px;background:linear-gradient(105deg,#f3f8fc,#e9f5f6);position:relative;overflow:hidden}
    .page-banner:after{content:"";position:absolute;width:390px;height:390px;border:1px solid rgba(23,105,170,.12);border-radius:50%;right:-100px;top:-180px}
    .breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:18px}
    .breadcrumbs a{color:var(--primary)}
    .banner-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:45px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);background:#e5f2fb;border-radius:30px;padding:5px 12px;font-size:13px;font-weight:700}
    h1{font-size:clamp(36px,5vw,56px);line-height:1.2;letter-spacing:-2px;margin:16px 0;color:#102b42}
    h1 span{color:var(--primary)}
    .banner-lead{font-size:18px;color:#526b7d;max-width:740px;margin:0}
    .banner-panel{background:#fff;border:1px solid var(--border);border-radius:var(--r2);padding:24px;box-shadow:var(--shadow);position:relative;z-index:1}
    .banner-panel img{height:178px;width:100%;object-fit:cover;border-radius:var(--r1);margin-bottom:18px}
    .panel-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}
    .panel-meta strong{color:var(--primary-dark);font-size:20px}
    .section{padding:var(--space) 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:34px;line-height:1.3;margin:0;color:#15344b}
    .section-head p{max-width:650px;color:var(--muted);margin:8px 0 0}
    .filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
    .filter-bar a{border:1px solid var(--border);background:#fff;color:#587081;border-radius:24px;padding:8px 16px;font-size:14px}
    .filter-bar a:hover,.filter-bar a.active{background:#e8f4fb;color:var(--primary);border-color:#a9c9dc}
    .news-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:start}
    .news-main,.news-item,.topic-box,.subscribe,.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);transition:.25s}
    .news-main:hover,.news-item:hover,.topic-box:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .news-main{overflow:hidden}
    .news-main img{height:258px;width:100%;object-fit:cover}
    .news-main-content{padding:26px}
    .news-main h3{font-size:25px;line-height:1.45;margin:14px 0 8px}
    .meta{font-size:13px;color:var(--muted)}
    .news-main p,.news-item p{color:var(--muted);margin:7px 0 14px}
    .text-link,.small-btn{color:var(--primary);font-weight:700;font-size:14px}
    .text-link:hover,.small-btn:hover{text-decoration:underline}
    .news-list{border-top:1px solid var(--border)}
    .news-item{display:grid;grid-template-columns:76px 1fr auto;gap:15px;align-items:center;padding:19px 21px;margin-bottom:12px;box-shadow:0 7px 22px rgba(27,65,94,.06)}
    .news-item h3{font-size:17px;line-height:1.5;margin:3px 0}
    .date{font-size:13px;color:var(--accent);font-weight:700}
    .topic-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
    .topic-box{padding:28px}
    .topic-box h3{font-size:23px;margin:10px 0}
    .topic-box p{color:var(--muted);margin:0 0 14px}
    .topic-box.feature{background:#eaf5fa}
    .topic-list{list-style:none;padding:0;margin:15px 0 0}
    .topic-list li{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px dashed #bfd3df;color:#416174}
    .topic-list li:last-child{border-bottom:0}
    .topic-list span{color:var(--muted);font-size:13px;white-space:nowrap}
    .reading-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:center}
    .reading-grid img{height:340px;width:100%;object-fit:cover;border-radius:var(--r2);box-shadow:var(--shadow)}
    .reading-copy h2{font-size:34px;line-height:1.35;margin:0 0 14px;color:#15344b}
    .reading-copy p{color:var(--muted);margin:0 0 15px}
    .check-list{list-style:none;padding:0;margin:20px 0}
    .check-list li{padding:9px 0 9px 28px;border-bottom:1px dashed var(--border);position:relative}
    .check-list li:before{content:"✓";position:absolute;left:0;color:var(--secondary);font-weight:bold}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{padding:20px 23px}
    .faq-item summary{cursor:pointer;font-weight:700;color:#21465f;list-style:none;position:relative;padding-right:20px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--primary)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{font-size:14px;color:var(--muted);margin:14px 0 0}
    .subscribe{padding:32px;display:grid;grid-template-columns:1fr .9fr;gap:35px;align-items:center}
    .subscribe h2{font-size:28px;margin:0 0 8px;color:#15344b}
    .subscribe p{color:var(--muted);margin:0}
    .form-row{display:flex;gap:9px}
    .form-row input{height:47px;border:1px solid var(--border);border-radius:var(--r1);padding:0 14px;flex:1;box-shadow:none}
    .form-row input:focus{border-color:var(--primary);outline:3px solid #d9edf9}
    .button{display:inline-block;border:0;padding:12px 20px;border-radius:var(--r1);font-weight:700;cursor:pointer}
    .button.outline{border:1px solid #a9c9dc;color:var(--primary);background:#fff}
    .button.outline:hover{border-color:var(--primary);background:#eef7fc}
    .cta{padding:52px 0;background:var(--primary-dark);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{font-size:32px;line-height:1.35;margin:0 0 8px}
    .cta p{color:#d6e7f2;margin:0;max-width:700px}
    .cta .button{background:#fff;color:var(--primary-dark)}
    .cta .button:hover{background:#eaf5fa;transform:translateY(-2px)}
    .footer{background:#102b42;color:#c5d5df;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer .brand{color:#fff}
    .footer p{font-size:14px;line-height:1.8;margin:16px 0 0;color:#aebfcb}
    .footer h3{font-size:15px;color:#fff;margin:2px 0 14px}
    .footer-links{display:grid;gap:8px;font-size:14px}
    .footer-links a:hover{color:#fff}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:18px;font-size:12px;color:#9eb1bd;line-height:2}
    :focus-visible{outline:3px solid #f1b56d;outline-offset:3px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 8px;font-size:13px}.nav-wrap{gap:12px}
      .banner-grid,.news-layout,.reading-grid,.topic-grid{grid-template-columns:1fr}
      .banner-panel{max-width:600px}
    }
    @media(max-width:768px){
      :root{--space:54px}.nav-wrap{min-height:64px;justify-content:space-between}
      .menu-toggle{display:block}.main-nav{display:none;position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid var(--border);padding:12px 24px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.is-open{display:flex}.main-nav a{padding:12px 14px}.nav-cta{display:none}
      .page-banner{padding:45px 0 50px}h1{letter-spacing:-1px}.section-head{display:block}.section-head h2,.reading-copy h2{font-size:29px}
      .faq-grid,.subscribe,.footer-grid{grid-template-columns:1fr}.subscribe{gap:20px}.cta-inner{display:block}.cta .button{margin-top:22px}
    }
    @media(max-width:520px){
      .container{padding:0 18px}.brand{font-size:19px;min-width:auto}.banner-lead{font-size:16px}
      .news-item{grid-template-columns:1fr;gap:4px}.news-item .small-btn{margin-top:4px}.news-main img{height:205px}
      .form-row{display:block}.form-row input{width:100%;margin-bottom:10px}.form-row .button{width:100%}
      .topic-box,.subscribe{padding:22px}.cta h2{font-size:27px}
    }