/* roulang page: index */
:root{
  --blue:#1463d8;--blue-dark:#0b3f93;--blue-soft:#eaf3ff;--cyan:#0b9d8a;--cyan-soft:#e7f8f4;
  --orange:#ee8a23;--ink:#152238;--muted:#607087;--line:#dce6f2;--paper:#ffffff;
  --wash:#f5f8fc;--deep:#10243e;--deep-2:#0b1930;--radius:18px;--radius-sm:12px;
  --shadow:0 14px 36px rgba(28,65,111,.10);--shadow-hover:0 20px 42px rgba(28,65,111,.17);
  --container:1200px;--transition:.24s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),transform var(--transition),box-shadow var(--transition)}
img{display:block;width:100%;max-width:100%;object-fit:cover}
button,input,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(20,99,216,.34);outline-offset:3px}
.site-shell{overflow:hidden}
.grid-container{max-width:var(--container)}
.topline{background:#edf4fc;border-bottom:1px solid #dce8f7;color:#53677f;font-size:13px}
.topline .grid-x{min-height:38px;align-items:center}
.service-note{display:flex;align-items:center;gap:8px}
.service-note i{color:var(--blue)}
.top-links{display:flex;justify-content:flex-end;gap:18px}
.top-links a:hover{color:var(--blue)}
.main-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,230,242,.88);transition:box-shadow var(--transition)}
.main-header.scrolled{box-shadow:0 8px 26px rgba(28,65,111,.1)}
.nav-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;white-space:nowrap;font-weight:800;font-size:21px;letter-spacing:-.5px;color:var(--ink)}
.brand-mark{width:37px;height:37px;border-radius:11px;background:linear-gradient(135deg,var(--blue),#3887ef);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 7px 15px rgba(20,99,216,.24)}
.desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:3px}
.desktop-nav a{font-size:14px;font-weight:650;color:#3f5069;padding:12px 12px;border-radius:9px}
.desktop-nav a:hover,.desktop-nav a.active{background:var(--blue-soft);color:var(--blue)}
.nav-cta{margin-left:8px;padding:11px 16px!important;background:var(--blue)!important;color:#fff!important;box-shadow:0 6px 15px rgba(20,99,216,.2)}
.nav-cta:hover{background:#2373e8!important;transform:translateY(-1px)}
.mobile-toggle{display:none;border:0;background:var(--blue-soft);color:var(--blue);width:44px;height:44px;border-radius:10px;font-size:19px}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--line);padding:10px 18px 16px}
.mobile-menu a{display:block;padding:12px 10px;color:#34465d;font-weight:650;border-bottom:1px solid #edf1f7}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu.open{display:block}
section{position:relative;padding:92px 0}
.section-tint{background:var(--wash)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:13px}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--blue)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,4.2vw,57px);line-height:1.2;letter-spacing:-1.7px;margin-bottom:21px}
h2{font-size:clamp(27px,3vw,39px);line-height:1.3;letter-spacing:-1px;margin-bottom:15px}
h3{font-size:20px;line-height:1.42;margin-bottom:9px}
.section-intro{max-width:720px;color:var(--muted);margin-bottom:35px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:10px;padding:12px 19px;font-size:15px;font-weight:750;border:1px solid transparent}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 9px 18px rgba(20,99,216,.22)}
.btn-primary:hover{background:#2577e8;color:#fff;transform:translateY(-2px);box-shadow:0 13px 24px rgba(20,99,216,.28)}
.btn-secondary{background:#fff;border-color:#b9ceeb;color:var(--blue)}
.btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue);color:var(--blue)}
.tag{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:7px;font-size:12px;font-weight:700;background:var(--blue-soft);color:var(--blue)}
.tag.green{background:var(--cyan-soft);color:#087766}
.tag.orange{background:#fff1df;color:#ad5b0d}
.hero{padding:50px 0 72px;background:linear-gradient(180deg,#f7fbff 0%,#fff 100%)}
.hero-grid{align-items:center}
.hero-copy{padding:35px 22px 35px 0}
.hero-copy p{max-width:640px;color:#53647c;font-size:17px;line-height:1.9;margin-bottom:25px}
.hero-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:9px}
.hero-stage{position:relative;height:472px;max-width:580px;margin-left:auto}
.hero-main-card{position:absolute;left:38px;top:18px;width:77%;height:420px;border-radius:24px;overflow:hidden;box-shadow:0 26px 48px rgba(31,71,121,.2);background:var(--deep)}
.hero-main-card img{height:100%;opacity:.62}
.hero-main-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,30,55,.04),rgba(8,24,49,.68))}
.stage-caption{position:absolute;z-index:2;left:25px;right:25px;bottom:23px;color:#fff}
.stage-caption strong{font-size:21px;display:block;line-height:1.4;margin-bottom:4px}
.stage-caption span{font-size:13px;color:#d8e9ff}
.floating-card{position:absolute;z-index:3;background:#fff;border:1px solid rgba(220,230,242,.9);box-shadow:var(--shadow);border-radius:15px;padding:15px 17px}
.float-one{right:0;top:73px;width:194px}
.float-two{left:0;bottom:3px;width:208px}
.float-label{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
.float-value{font-size:25px;line-height:1.15;font-weight:800;color:var(--ink)}
.float-trend{font-size:12px;color:var(--cyan);font-weight:700;margin-top:5px}
.mini-bars{display:flex;align-items:flex-end;height:30px;gap:4px;margin-top:10px}
.mini-bars b{display:block;width:11px;border-radius:3px 3px 0 0;background:#77aaf1}
.mini-bars b:nth-child(2){height:19px}.mini-bars b:nth-child(3){height:28px;background:var(--blue)}.mini-bars b:nth-child(4){height:15px}.mini-bars b:nth-child(5){height:24px;background:var(--cyan)}
.pain-strip{padding:30px 0;background:var(--blue);color:#fff}
.pain-grid{align-items:stretch}
.pain-lead{font-size:20px;font-weight:800;padding:10px 26px 10px 0;line-height:1.5}
.pain-item{padding:7px 20px;border-left:1px solid rgba(255,255,255,.26)}
.pain-item b{display:block;font-size:13px;color:#bdddff;margin-bottom:4px}
.pain-item span{font-size:14px;line-height:1.55;display:block}
.solution-media{height:420px;border-radius:var(--radius);overflow:hidden;position:relative;box-shadow:var(--shadow);background:#dceaff}
.solution-media img{height:100%}
.solution-overlay{position:absolute;inset:auto 18px 18px 18px;background:rgba(255,255,255,.95);border-radius:12px;padding:15px;box-shadow:0 9px 20px rgba(20,50,90,.14)}
.solution-overlay strong{font-size:14px}
.solution-overlay div{height:7px;background:#dfeaf7;border-radius:5px;margin-top:10px;overflow:hidden}
.solution-overlay div:after{content:"";display:block;width:72%;height:100%;background:var(--blue);border-radius:5px}
.solution-copy{padding-left:6%}
.check-list{list-style:none;margin:24px 0;padding:0}
.check-list li{position:relative;padding:0 0 14px 29px;color:#4d5e75}
.check-list li:before{content:"✓";position:absolute;left:0;top:2px;color:#fff;background:var(--cyan);width:19px;height:19px;border-radius:50%;font-size:12px;line-height:19px;text-align:center;font-weight:bold}
.info-inline{border-top:1px solid var(--line);padding-top:17px;display:flex;flex-wrap:wrap;gap:10px}
.info-inline span{font-size:13px;color:#56677c;padding-right:13px;border-right:1px solid var(--line)}
.info-inline span:last-child{border:0}
.flow-wrap{margin-top:36px;display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.flow-wrap:before{content:"";position:absolute;top:32px;left:9%;right:9%;height:2px;background:#cfe0f4}
.flow-step{position:relative;padding:0 17px}
.flow-num{position:relative;z-index:1;width:65px;height:65px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1px solid #c5dcf7;color:var(--blue);font-weight:850;font-size:17px;box-shadow:0 5px 16px rgba(20,99,216,.11);margin-bottom:18px}
.flow-step p{font-size:14px;color:var(--muted);line-height:1.65;margin:0}
.ability-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;gap:18px}
.ability-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 9px 24px rgba(30,67,110,.06);min-height:170px;position:relative;overflow:hidden}
.ability-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.ability-card.large{grid-row:span 2;background:linear-gradient(145deg,#edf5ff,#fff)}
.ability-card .number{color:#89afe1;font-size:13px;font-weight:850;display:block;margin-bottom:30px}
.ability-card.large .number{margin-bottom:55px}
.ability-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.65}
.ability-icon{position:absolute;right:21px;top:20px;font-size:23px;color:var(--blue);opacity:.9}
.product-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:20px}
.product-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 8px 21px rgba(30,67,110,.06)}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.product-image{height:190px;overflow:hidden}
.product-image img{height:100%;transition:transform .45s ease}
.product-card:hover .product-image img{transform:scale(1.05)}
.product-body{padding:20px}
.product-body p{color:var(--muted);font-size:14px;margin-bottom:15px}
.product-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:13px;font-weight:750;color:var(--blue)}
.dark-case{background:var(--deep);color:#fff;overflow:hidden}
.dark-case:before{content:"";position:absolute;width:530px;height:530px;border-radius:50%;right:-180px;top:-280px;background:rgba(39,124,218,.17)}
.dark-case .eyebrow{color:#8ec4ff}.dark-case .eyebrow:before{background:#6ab9ff}
.dark-case p{color:#b7c8dc}
.case-points{display:grid;gap:10px;margin-top:25px}
.case-point{display:flex;gap:12px;padding:13px;background:rgba(255,255,255,.06);border-left:3px solid var(--cyan);border-radius:0 9px 9px 0;font-size:14px}
.case-point i{color:#6ce0cd;margin-top:5px}
.case-dashboard{padding:23px;background:#0b1b31;border:1px solid rgba(160,197,240,.18);border-radius:18px}
.dashboard-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#c7d9ee;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:14px}
.dashboard-bars{padding:23px 0 8px;display:flex;align-items:flex-end;height:230px;gap:15px;border-bottom:1px solid rgba(255,255,255,.12)}
.dashboard-bars span{flex:1;background:linear-gradient(180deg,#4f9fff,#1661cf);border-radius:6px 6px 0 0;position:relative;min-width:12px}
.dashboard-bars span:after{content:attr(data-label);position:absolute;bottom:-26px;left:50%;transform:translateX(-50%);font-size:11px;color:#9fb4ce;white-space:nowrap}
.dashboard-bars span:nth-child(2),.dashboard-bars span:nth-child(5){background:linear-gradient(180deg,#58d5c3,#0a9887)}
.dashboard-bars span:nth-child(1){height:46%}.dashboard-bars span:nth-child(2){height:71%}.dashboard-bars span:nth-child(3){height:59%}.dashboard-bars span:nth-child(4){height:84%}.dashboard-bars span:nth-child(5){height:67%}
.dashboard-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding-top:27px}
.dashboard-metrics b{display:block;font-size:18px;color:#fff}.dashboard-metrics span{font-size:11px;color:#92a9c6}
.story-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow);position:relative}
.story-card:before{content:"";position:absolute;left:0;top:27px;bottom:27px;width:4px;background:var(--blue);border-radius:0 4px 4px 0}
.story-meta{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:14px}
.story-card p{color:var(--muted);font-size:15px;margin-bottom:13px}
.story-result{border-top:1px solid var(--line);padding-top:13px;font-size:14px;color:#39506d}
.story-result b{color:var(--cyan)}
.stats{background:#edf5ff;padding:42px 0}
.stat-item{padding:5px 23px;border-right:1px solid #c9d9ec}
.stat-item:last-child{border-right:0}
.stat-value{font-size:31px;font-weight:850;line-height:1.15;color:var(--blue);letter-spacing:-1px}
.stat-label{font-size:13px;color:#5b6c82;margin-top:6px;line-height:1.5}
.scene-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:17px}
.scene-card{border-radius:var(--radius);padding:26px;min-height:215px;border:1px solid var(--line);background:#fff;box-shadow:0 7px 18px rgba(30,67,110,.05)}
.scene-card:first-child{background:linear-gradient(145deg,#1567d8,#0b499d);border-color:#1567d8;color:#fff}
.scene-card:first-child p{color:#d9eaff}.scene-card p{font-size:14px;color:var(--muted);margin:12px 0 0}
.scene-icon{font-size:25px;margin-bottom:26px;color:var(--cyan)}
.scene-card:first-child .scene-icon{color:#8ce4d5}
.topic-list{border-top:1px solid var(--line)}
.topic-row{display:grid;grid-template-columns:72px 1fr auto;align-items:center;gap:20px;padding:20px 4px;border-bottom:1px solid var(--line)}
.topic-row:hover{padding-left:10px;background:#f9fbfe}
.topic-no{font-size:13px;font-weight:850;color:#80a8df}
.topic-row h3{font-size:18px;margin:0 0 3px}.topic-row p{font-size:13px;color:var(--muted);margin:0}
.topic-row i{color:var(--blue)}
.news-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:30px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:100px 1fr;gap:18px;padding:19px 0;border-bottom:1px solid var(--line)}
.news-date{font-size:13px;font-weight:800;color:var(--blue);padding-top:3px}
.news-item h3{font-size:17px;margin-bottom:5px}.news-item p{font-size:13px;color:var(--muted);margin:0}
.news-side{border-radius:var(--radius);overflow:hidden;background:#eaf3ff}
.news-side img{height:190px}.news-side-body{padding:21px}.news-side-body p{font-size:14px;color:#52667e;margin-bottom:0}
.trust-panel{border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);padding:28px}
.trust-group{padding:17px 0;border-bottom:1px solid var(--line)}
.trust-group:last-child{border-bottom:0;padding-bottom:0}
.trust-group:first-child{padding-top:0}
.trust-group h3{font-size:17px;margin-bottom:6px}.trust-group p{font-size:14px;color:var(--muted);margin:0}
.trust-mark{display:inline-flex;margin-right:9px;width:25px;height:25px;border-radius:50%;align-items:center;justify-content:center;background:var(--cyan-soft);color:var(--cyan);font-size:12px}
.testimonial-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.quote-card{padding:27px;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:0 8px 21px rgba(30,67,110,.06)}
.quote-mark{color:#9cc5fa;font-size:33px;line-height:.8}.quote-card blockquote{font-size:16px;line-height:1.8;color:#40516a;margin:12px 0 18px}.quote-card footer{font-size:13px;color:var(--muted)}
.faq-wrap{max-width:900px;margin:0 auto}
.accordion{background:transparent;margin:0}
.accordion-item{border:1px solid var(--line);border-radius:12px!important;margin-bottom:11px;overflow:hidden;background:#fff;box-shadow:0 5px 14px rgba(30,67,110,.04)}
.accordion-title{border:0!important;color:var(--ink)!important;font-size:16px;font-weight:750;padding:19px 52px 19px 20px!important;line-height:1.45}
.accordion-title:before{color:var(--blue)!important;font-size:22px!important;font-weight:400}
.accordion-content{border:0!important;color:#596a80!important;font-size:14px;line-height:1.8;padding:0 20px 19px!important;background:#fff}
.contact-section{padding:86px 0;background:linear-gradient(120deg,#e8f3ff,#f7fbff)}
.contact-card{background:#fff;border:1px solid #d6e5f6;border-radius:22px;box-shadow:var(--shadow);padding:38px}
.contact-card p{color:var(--muted);max-width:620px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.form-field label{display:block;font-size:13px;color:#455871;font-weight:700;margin-bottom:6px}
.form-field input,.form-field textarea{width:100%;border:1px solid #cbd9ea;border-radius:9px;box-shadow:none;background:#fff;padding:11px 12px;color:var(--ink);transition:border var(--transition),box-shadow var(--transition);margin:0}
.form-field input{height:47px}.form-field textarea{min-height:100px;resize:vertical}
.form-field input:focus,.form-field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,99,216,.12);outline:none}
.form-field.full{grid-column:1/-1}
.form-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:17px}
.privacy{font-size:12px;color:#6a7b90;margin:0}.form-status{font-size:13px;color:var(--cyan);display:none}
.footer{background:#10233d;color:#c8d5e4;padding:58px 0 25px}
.footer .brand{color:#fff;margin-bottom:15px}.footer-intro{font-size:14px;max-width:330px;color:#aebfd2}
.footer h3{font-size:15px;color:#fff;margin-bottom:14px}.footer-links{list-style:none;margin:0;padding:0}.footer-links li{margin:7px 0}.footer-links a{font-size:14px;color:#b6c8da}.footer-links a:hover{color:#fff}
.footer-contact{font-size:14px;line-height:2;color:#b6c8da}.footer-contact i{width:20px;color:#77b3ff}
.footer-bottom{margin-top:38px;padding-top:21px;border-top:1px solid rgba(255,255,255,.13);display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:12px;color:#91a7bf}
.footer-bottom span{word-break:break-word}
@media(max-width:1023px){
  .desktop-nav{display:none}.mobile-toggle{display:block}.nav-row{min-height:66px}
  .hero-stage{height:410px}.hero-main-card{height:370px}
  .solution-copy{padding-left:0;margin-top:36px}.ability-grid{grid-template-columns:1fr 1fr}.ability-card.large{grid-row:span 1}
  .product-grid,.scene-grid{grid-template-columns:1fr 1fr}.product-card:first-child,.scene-card:first-child{grid-column:span 2}
}
@media(max-width:767px){
  section{padding:66px 0}.topline .grid-x{min-height:34px}.top-links{display:none}.service-note{font-size:12px}
  .hero{padding:22px 0 54px}.hero-copy{padding:27px 0 18px}.hero-copy p{font-size:15px}.hero-stage{height:345px;margin-top:7px}
  .hero-main-card{left:26px;width:78%;height:305px}.float-one{width:164px;top:45px}.float-two{width:180px;padding:12px;bottom:0}.float-value{font-size:21px}
  .pain-strip{padding:15px 0}.pain-lead{padding:7px 0;font-size:17px}.pain-item{border-left:0;border-top:1px solid rgba(255,255,255,.22);padding:12px 0}
  .flow-wrap{grid-template-columns:1fr 1fr;gap:24px}.flow-wrap:before{display:none}.flow-step{padding:0}
  .stats{padding:26px 0}.stat-item{padding:14px;border-right:0;border-bottom:1px solid #c9d9ec}.stat-item:nth-last-child(-n+2){border-bottom:0}
  .news-layout{grid-template-columns:1fr}.news-side{max-width:530px}.topic-row{grid-template-columns:48px 1fr 20px;gap:10px}
  .testimonial-grid{grid-template-columns:1fr}.contact-card{padding:26px 20px}
}
@media(max-width:520px){
  h1{font-size:33px}.brand{font-size:19px}.hero-buttons,.form-bottom{align-items:stretch;flex-direction:column}.hero-buttons .btn,.form-bottom .btn{width:100%}
  .hero-stage{height:310px}.hero-main-card{left:18px;width:80%;height:275px}.float-one{right:0;width:145px;padding:11px}.float-two{width:160px}.float-label{font-size:11px}
  .ability-grid,.product-grid,.scene-grid{grid-template-columns:1fr}.product-card:first-child,.scene-card:first-child{grid-column:auto}
  .flow-wrap{grid-template-columns:1fr}.flow-step{padding-left:82px;min-height:82px}.flow-num{position:absolute;left:0;top:0}
  .news-item{grid-template-columns:1fr;gap:3px}.form-grid{grid-template-columns:1fr}.form-field.full{grid-column:auto}
  .dashboard-metrics{gap:5px}.dashboard-metrics b{font-size:15px}.footer{padding-top:44px}
}

/* roulang page: category2 */
:root{
 --blue:#1463d8;--blue-dark:#0b3f93;--blue-soft:#eaf3ff;--cyan:#0b9d8a;--cyan-soft:#e7f8f4;
 --orange:#ee8a23;--ink:#152238;--muted:#607087;--line:#dce6f2;--paper:#ffffff;
 --wash:#f5f8fc;--deep:#10243e;--deep-2:#0b1930;--radius:18px;--radius-sm:12px;
 --shadow:0 14px 36px rgba(28,65,111,.10);--shadow-hover:0 20px 42px rgba(28,65,111,.17);
 --container:1200px;--transition:.24s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),transform var(--transition),box-shadow var(--transition)}
img{display:block;width:100%;max-width:100%;object-fit:cover}
button,input,textarea{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(20,99,216,.32);outline-offset:3px}
.grid-container{max-width:var(--container)}
.main-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,230,242,.9);transition:box-shadow var(--transition)}
.main-header.scrolled{box-shadow:0 8px 26px rgba(28,65,111,.1)}
.nav-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;white-space:nowrap;font-weight:800;font-size:21px;letter-spacing:-.5px;color:var(--ink)}
.brand-mark{width:37px;height:37px;border-radius:11px;background:linear-gradient(135deg,var(--blue),#3887ef);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 7px 15px rgba(20,99,216,.24)}
.desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:3px}
.desktop-nav a{font-size:14px;font-weight:650;color:#3f5069;padding:12px 12px;border-radius:9px}
.desktop-nav a:hover,.desktop-nav a.active{background:var(--blue-soft);color:var(--blue)}
.nav-cta{margin-left:8px;padding:11px 16px!important;background:var(--blue)!important;color:#fff!important;box-shadow:0 6px 15px rgba(20,99,216,.2)}
.nav-cta:hover{background:#2373e8!important;transform:translateY(-1px)}
.mobile-toggle{display:none;border:0;background:var(--blue-soft);color:var(--blue);width:44px;height:44px;border-radius:10px;font-size:19px}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--line);padding:10px 18px 16px}
.mobile-menu a{display:block;padding:12px 10px;color:#34465d;font-weight:650;border-bottom:1px solid #edf1f7}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu.open{display:block}
section{position:relative;padding:82px 0}
.section-tint{background:var(--wash)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:13px}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--blue)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(32px,4vw,50px);line-height:1.24;letter-spacing:-1.4px;margin-bottom:18px}
h2{font-size:clamp(25px,3vw,34px);line-height:1.35;letter-spacing:-.7px;margin-bottom:14px}
h3{font-size:18px;line-height:1.45;margin-bottom:8px}
.section-intro{max-width:740px;color:var(--muted);margin-bottom:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:10px;padding:12px 19px;font-size:15px;font-weight:750;border:1px solid transparent}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 9px 18px rgba(20,99,216,.22)}
.btn-primary:hover{background:#2577e8;color:#fff;transform:translateY(-2px);box-shadow:0 13px 24px rgba(20,99,216,.28)}
.btn-secondary{background:#fff;border-color:#b9ceeb;color:var(--blue)}
.btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue)}
.tag{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:7px;font-size:12px;font-weight:700;background:var(--blue-soft);color:var(--blue)}
.tag.green{background:var(--cyan-soft);color:#087766}
.tag.orange{background:#fff1df;color:#ad5b0d}
.topic-hero{padding:66px 0 54px;background:linear-gradient(120deg,#f5f9ff 0%,#fff 65%);overflow:hidden}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-bottom:24px}
.breadcrumb i{font-size:10px;color:#95a4b7}
.breadcrumb a:hover{color:var(--blue)}
.topic-copy{padding-right:28px}
.topic-copy p{font-size:17px;color:#52647d;max-width:690px}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.topic-visual{height:265px;border-radius:var(--radius);overflow:hidden;position:relative;box-shadow:var(--shadow)}
.topic-visual img{height:100%}
.topic-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,45,91,.14),rgba(8,31,65,.45))}
.visual-note{position:absolute;z-index:1;left:22px;bottom:18px;color:#fff;font-size:14px;font-weight:700}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;box-shadow:0 8px 24px rgba(28,65,111,.05)}
.filter-label{font-size:14px;font-weight:800;color:#40526a;margin-right:5px}
.filter-btn{border:1px solid var(--line);background:#fff;color:#53657d;border-radius:8px;padding:8px 13px;font-size:13px;font-weight:700}
.filter-btn:hover,.filter-btn.active{background:var(--blue-soft);border-color:#b8d2f5;color:var(--blue)}
.featured-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);height:100%}
.featured-image{height:100%;min-height:280px}
.featured-body{padding:30px}
.featured-body p{color:var(--muted);margin-bottom:20px}
.content-list{display:grid;gap:15px}
.content-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:21px 23px;display:grid;grid-template-columns:126px 1fr auto;gap:20px;align-items:center;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.content-item:hover{transform:translateY(-3px);border-color:#bdd4f4;box-shadow:var(--shadow)}
.content-date{font-size:13px;color:var(--blue);font-weight:800;line-height:1.5}
.content-date span{display:block;font-size:12px;color:#8090a5;font-weight:600}
.content-summary{color:var(--muted);font-size:14px;line-height:1.7;margin:6px 0 0}
.read-mark{width:39px;height:39px;display:grid;place-items:center;border-radius:50%;background:var(--blue-soft);color:var(--blue);font-size:14px}
.metric-panel{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;box-shadow:var(--shadow)}
.metric-row{display:grid;grid-template-columns:1.1fr 1fr 1.35fr;border-bottom:1px solid var(--line);padding:17px 22px;gap:18px;align-items:center}
.metric-row:last-child{border-bottom:0}
.metric-row strong{font-size:15px}
.metric-row span{font-size:14px;color:#40536d}
.metric-row small{font-size:13px;color:var(--muted)}
.method-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}
.method-step{position:relative;padding:23px 19px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm)}
.method-step:not(:last-child):after{content:"";position:absolute;width:17px;height:1px;background:#adc7ea;right:-17px;top:50%}
.step-no{display:block;font-size:12px;font-weight:850;color:var(--blue);letter-spacing:.08em;margin-bottom:22px}
.method-step p{font-size:13px;color:var(--muted);line-height:1.7;margin:0}
.scene-card{height:100%;background:var(--deep);color:#fff;border-radius:var(--radius);padding:29px;position:relative;overflow:hidden}
.scene-card:after{content:"";position:absolute;width:155px;height:155px;border-radius:50%;right:-46px;bottom:-65px;border:28px solid rgba(84,158,255,.12)}
.scene-card .tag{background:rgba(134,190,255,.15);color:#b9dcff;position:relative;z-index:1}
.scene-card h3,.scene-card p{position:relative;z-index:1}
.scene-card p{color:#c2d0e1;font-size:14px;margin:13px 0 0}
.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.evidence-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px}
.evidence-box h3{display:flex;gap:10px;align-items:center}
.evidence-box h3 i{color:var(--cyan)}
.evidence-box ul{list-style:none;padding:0;margin:17px 0 0}
.evidence-box li{padding:11px 0;border-top:1px dashed #dbe5f1;color:#55667d;font-size:14px}
.evidence-box li b{color:var(--ink);margin-right:8px}
.accordion-wrap{max-width:900px}
.accordion-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;margin-bottom:12px;overflow:hidden}
.accordion-title{width:100%;border:0;background:#fff;color:var(--ink);text-align:left;padding:18px 53px 18px 20px;font-weight:800;position:relative;line-height:1.5}
.accordion-title i{position:absolute;right:20px;top:24px;color:var(--blue);transition:transform var(--transition)}
.accordion-title[aria-expanded="true"] i{transform:rotate(45deg)}
.accordion-panel{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px;line-height:1.8}
.accordion-panel.open{display:block}
.cta-section{padding:78px 0;background:#eaf3ff}
.cta-box{background:#fff;border:1px solid #d2e3f8;border-radius:22px;padding:42px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta-box p{color:var(--muted);margin:8px 0 0;max-width:670px}
.footer{background:var(--deep-2);color:#d2ddec;padding:62px 0 20px}
.footer .brand{color:#fff;margin-bottom:17px}
.footer-intro{color:#aebfd4;max-width:320px;font-size:14px;line-height:1.75}
.footer h3{font-size:15px;color:#fff;margin:5px 0 15px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin:7px 0}
.footer-links a{font-size:14px;color:#b8c7d9}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:14px;color:#b8c7d9}
.footer-contact div{display:flex;gap:9px;align-items:flex-start;margin:8px 0}
.footer-contact i{color:#7eb5ff;margin-top:5px}
.footer-bottom{border-top:1px solid rgba(184,205,230,.16);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:16px;color:#8ea4c0;font-size:12px}
@media(max-width:1023px){
 .desktop-nav{display:none}.mobile-toggle{display:block}.topic-copy{padding-right:0}.topic-visual{margin-top:28px}
 .method-steps{grid-template-columns:repeat(2,1fr)}.method-step:nth-child(2):after{display:none}
}
@media(max-width:639px){
 body{font-size:15px}.nav-row{min-height:68px}.brand{font-size:19px}.brand-mark{width:34px;height:34px}
 section{padding:58px 0}.topic-hero{padding:45px 0 38px}.topic-visual{height:205px}
 .content-item{grid-template-columns:1fr 38px;gap:12px;padding:18px}.content-date{grid-column:1}.content-item>div:nth-child(2){grid-column:1}.read-mark{grid-column:2;grid-row:1/3}
 .metric-row{grid-template-columns:1fr;padding:15px 18px;gap:4px}.method-steps{grid-template-columns:1fr}.method-step:after{display:none}
 .evidence-grid{grid-template-columns:1fr}.cta-box{padding:28px 23px;display:block}.cta-box .btn{margin-top:20px;width:100%}
 .footer{padding-top:48px}.footer-bottom{display:block;line-height:1.8}.footer-bottom span{display:block;margin-bottom:5px}
}

/* roulang page: category1 */
:root{
 --blue:#1463d8;--blue-dark:#0b3f93;--blue-soft:#eaf3ff;--cyan:#0b9d8a;--cyan-soft:#e7f8f4;
 --orange:#ee8a23;--ink:#152238;--muted:#607087;--line:#dce6f2;--paper:#ffffff;
 --wash:#f5f8fc;--deep:#10243e;--deep-2:#0b1930;--radius:18px;--radius-sm:12px;
 --shadow:0 14px 36px rgba(28,65,111,.10);--shadow-hover:0 20px 42px rgba(28,65,111,.17);
 --container:1200px;--transition:.24s ease
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),transform var(--transition),box-shadow var(--transition)}img{display:block;width:100%;max-width:100%;object-fit:cover}button,input,textarea{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(20,99,216,.3);outline-offset:3px}
.grid-container{max-width:var(--container)}.main-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,230,242,.88);transition:box-shadow var(--transition)}.main-header.scrolled{box-shadow:0 8px 26px rgba(28,65,111,.1)}
.nav-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;white-space:nowrap;font-weight:800;font-size:21px;letter-spacing:-.5px;color:var(--ink)}.brand-mark{width:37px;height:37px;border-radius:11px;background:linear-gradient(135deg,var(--blue),#3887ef);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 7px 15px rgba(20,99,216,.24)}
.desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:3px}.desktop-nav a{font-size:14px;font-weight:650;color:#3f5069;padding:12px 12px;border-radius:9px}.desktop-nav a:hover,.desktop-nav a.active{background:var(--blue-soft);color:var(--blue)}.nav-cta{margin-left:8px;padding:11px 16px!important;background:var(--blue)!important;color:#fff!important;box-shadow:0 6px 15px rgba(20,99,216,.2)}.nav-cta:hover{background:#2373e8!important;transform:translateY(-1px)}
.mobile-toggle{display:none;border:0;background:var(--blue-soft);color:var(--blue);width:44px;height:44px;border-radius:10px;font-size:19px}.mobile-menu{display:none;background:#fff;border-top:1px solid var(--line);padding:10px 18px 16px}.mobile-menu a{display:block;padding:12px 10px;color:#34465d;font-weight:650;border-bottom:1px solid #edf1f7}.mobile-menu a:last-child{border-bottom:0}.mobile-menu.open{display:block}
section{position:relative;padding:88px 0}.section-tint{background:var(--wash)}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:13px}.eyebrow:before{content:"";width:22px;height:2px;background:var(--blue)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(32px,4.2vw,53px);letter-spacing:-1.8px;line-height:1.2;margin-bottom:19px}h2{font-size:clamp(26px,3vw,37px);line-height:1.32;letter-spacing:-1px;margin-bottom:16px}h3{font-size:18px;line-height:1.45;margin-bottom:8px}.section-intro{max-width:760px;color:var(--muted);margin-bottom:36px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:10px;padding:12px 19px;font-size:15px;font-weight:750;border:1px solid transparent}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 9px 18px rgba(20,99,216,.22)}.btn-primary:hover{background:#2577e8;color:#fff;transform:translateY(-2px);box-shadow:0 13px 24px rgba(20,99,216,.28)}.btn-secondary{background:#fff;border-color:#b9ceeb;color:var(--blue)}.btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue);color:var(--blue)}
.tag{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:7px;font-size:12px;font-weight:700;background:var(--blue-soft);color:var(--blue)}.tag.green{background:var(--cyan-soft);color:#087766}.tag.orange{background:#fff1df;color:#ad5b0d}
.topic-hero{padding:66px 0 58px;background:linear-gradient(115deg,#edf5ff 0%,#f8fbff 50%,#fff 100%);overflow:hidden}.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-bottom:27px}.breadcrumb i{font-size:10px;color:#9aaabe}.breadcrumb a:hover{color:var(--blue)}.topic-copy{padding-right:25px}.topic-copy p{max-width:710px;color:#53647c;font-size:17px;line-height:1.9}.topic-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:23px}.topic-visual{height:285px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);position:relative}.topic-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,49,98,.05),rgba(11,25,48,.35))}.topic-visual img{height:100%}
.filter-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:17px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:0 7px 20px rgba(28,65,111,.05)}.filter-label{font-size:14px;font-weight:800;margin-right:5px}.filter-btn{border:1px solid #d6e2f0;background:#fff;color:#56677d;border-radius:8px;min-height:38px;padding:7px 13px;font-size:13px;font-weight:700}.filter-btn:hover,.filter-btn.active{background:var(--blue);border-color:var(--blue);color:#fff}.filter-note{margin-left:auto;color:var(--muted);font-size:13px}
.method-list{display:grid;gap:17px}.method-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:grid;grid-template-columns:165px 1fr auto;gap:24px;align-items:center;box-shadow:0 8px 22px rgba(28,65,111,.055);transition:var(--transition)}.method-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}.method-image{height:118px;border-radius:12px;overflow:hidden}.method-image img{height:100%}.method-info p{margin:0;color:var(--muted);font-size:14px}.method-info h3{font-size:20px}.method-tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.arrow-link{color:var(--blue);font-size:14px;font-weight:800;white-space:nowrap;padding:11px 0}.arrow-link:hover{color:var(--blue-dark);transform:translateX(3px)}
.metric-panel{background:var(--deep);border-radius:var(--radius);padding:35px;color:#fff;box-shadow:var(--shadow)}.metric-panel h2{color:#fff}.metric-panel p{color:#c2d2e7}.metric-group{border-top:1px solid rgba(206,225,249,.18);padding:17px 0;display:grid;grid-template-columns:150px 1fr;gap:18px}.metric-group:last-child{padding-bottom:0}.metric-group strong{color:#8cc8ff;font-size:15px}.metric-group span{font-size:14px;color:#d8e4f3}.metric-aside{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);height:100%}.metric-aside ul{list-style:none;padding:0;margin:20px 0 0}.metric-aside li{position:relative;padding:10px 0 10px 24px;border-bottom:1px solid #edf1f6;color:#52637a;font-size:14px}.metric-aside li:last-child{border:0}.metric-aside li:before{content:"✓";position:absolute;left:0;color:var(--cyan);font-weight:900}
.scene-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}.scene-feature{position:relative;min-height:395px;border-radius:var(--radius);overflow:hidden;color:#fff;box-shadow:var(--shadow)}.scene-feature img{position:absolute;height:100%}.scene-feature:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,28,54,.08),rgba(9,27,52,.87))}.scene-body{position:absolute;z-index:1;inset:auto 30px 28px}.scene-body p{color:#dceaff;margin:0}.scene-cases{display:grid;gap:18px}.mini-case{border:1px solid var(--line);background:#fff;padding:22px;border-radius:var(--radius);box-shadow:0 8px 20px rgba(28,65,111,.05)}.mini-case i{color:var(--blue);font-size:23px;margin-bottom:14px}.mini-case p{font-size:14px;color:var(--muted);margin:0}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 8px 24px rgba(28,65,111,.06)}.trust-item{padding:26px;border-right:1px solid var(--line)}.trust-item:last-child{border:0}.trust-item i{color:var(--cyan);font-size:20px;margin-bottom:13px}.trust-item h3{font-size:16px}.trust-item p{font-size:13px;color:var(--muted);margin:0}
.faq-wrap{max-width:900px}.accordion{background:transparent;margin:0}.accordion-item{border:1px solid var(--line);border-radius:12px!important;overflow:hidden;margin-bottom:11px;background:#fff;box-shadow:0 5px 15px rgba(28,65,111,.04)}.accordion-title{border:0;color:var(--ink);font-size:16px;font-weight:800;padding:19px 50px 19px 20px;line-height:1.55}.accordion-title:hover,.accordion-title:focus{background:var(--blue-soft);color:var(--blue)}.accordion-title:before{color:var(--blue);font-size:21px;right:20px;margin-top:-15px}.accordion-content{border:0;color:var(--muted);padding:0 20px 20px;font-size:14px;line-height:1.85}
.consult{padding:76px 0;background:linear-gradient(120deg,#e7f2ff,#f8fcff)}.consult-box{background:#fff;border:1px solid #d5e5f8;border-radius:24px;padding:42px;box-shadow:var(--shadow)}.consult-box p{color:var(--muted);margin-bottom:0}.consult-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;height:100%;flex-wrap:wrap}
.footer{background:var(--deep-2);color:#d3dfed;padding:60px 0 22px}.footer .brand{color:#fff;margin-bottom:17px}.footer-intro{font-size:14px;line-height:1.8;color:#aebfd5;max-width:310px}.footer h3{font-size:14px;color:#fff;margin:5px 0 15px}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin-bottom:8px}.footer-links a{font-size:14px;color:#b8c8db}.footer-links a:hover{color:#8ec4ff}.footer-contact{font-size:14px;color:#b8c8db}.footer-contact div{display:flex;gap:9px;margin-bottom:9px;align-items:flex-start}.footer-contact i{color:#75b4fa;padding-top:5px}.footer-bottom{margin-top:43px;padding-top:18px;border-top:1px solid rgba(201,221,246,.15);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:#8296b0;font-size:12px}
@media(max-width:1023px){.desktop-nav{display:none}.mobile-toggle{display:grid;place-items:center}.topic-copy{padding-right:0}.topic-visual{margin-top:30px;height:250px}.method-card{grid-template-columns:130px 1fr}.method-card .arrow-link{grid-column:2}.trust-grid{grid-template-columns:repeat(2,1fr)}.trust-item:nth-child(2){border-right:0}.trust-item:nth-child(-n+2){border-bottom:1px solid var(--line)}}
@media(max-width:639px){section{padding:62px 0}.nav-row{min-height:66px}.brand{font-size:18px}.brand-mark{width:34px;height:34px}.topic-hero{padding:46px 0}.topic-copy p{font-size:15px}.topic-visual{height:205px}.filter-bar{padding:14px}.filter-note{width:100%;margin-left:0}.method-card{display:block;padding:16px}.method-image{height:166px;margin-bottom:17px}.method-info h3{font-size:18px}.method-card .arrow-link{display:inline-block;margin-top:14px}.metric-panel,.metric-aside{padding:24px}.metric-group{grid-template-columns:1fr;gap:5px}.scene-grid{grid-template-columns:1fr}.scene-feature{min-height:330px}.scene-body{left:22px;right:22px;bottom:22px}.trust-grid{grid-template-columns:1fr}.trust-item{border-right:0;border-bottom:1px solid var(--line)}.trust-item:last-child{border-bottom:0}.consult-box{padding:28px 22px}.consult-actions{justify-content:flex-start;margin-top:22px}.footer{padding-top:45px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:8px 0}.btn{width:100%}}

/* roulang page: category3 */
:root{
  --blue:#1463d8;--blue-dark:#0b3f93;--blue-soft:#eaf3ff;--cyan:#0b9d8a;--cyan-soft:#e7f8f4;
  --orange:#ee8a23;--orange-soft:#fff1df;--ink:#152238;--muted:#607087;--line:#dce6f2;
  --paper:#fff;--wash:#f5f8fc;--deep:#10243e;--deep-2:#0b1930;--radius:18px;--radius-sm:12px;
  --shadow:0 14px 36px rgba(28,65,111,.10);--shadow-hover:0 20px 42px rgba(28,65,111,.17);
  --container:1200px;--transition:.24s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),transform var(--transition),box-shadow var(--transition)}
img{display:block;width:100%;max-width:100%;object-fit:cover}
button,input,textarea{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(20,99,216,.3);outline-offset:3px}
.grid-container{max-width:var(--container)}
.main-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,230,242,.88);transition:box-shadow var(--transition)}
.main-header.scrolled{box-shadow:0 8px 26px rgba(28,65,111,.1)}
.nav-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;white-space:nowrap;font-weight:800;font-size:21px;letter-spacing:-.5px;color:var(--ink)}
.brand-mark{width:37px;height:37px;border-radius:11px;background:linear-gradient(135deg,var(--blue),#3887ef);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 7px 15px rgba(20,99,216,.24)}
.desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:3px}
.desktop-nav a{font-size:14px;font-weight:650;color:#3f5069;padding:12px 12px;border-radius:9px}
.desktop-nav a:hover,.desktop-nav a.active{background:var(--blue-soft);color:var(--blue)}
.nav-cta{margin-left:8px;padding:11px 16px!important;background:var(--blue)!important;color:#fff!important;box-shadow:0 6px 15px rgba(20,99,216,.2)}
.nav-cta:hover{background:#2373e8!important;transform:translateY(-1px)}
.mobile-toggle{display:none;border:0;background:var(--blue-soft);color:var(--blue);width:44px;height:44px;border-radius:10px;font-size:19px}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--line);padding:10px 18px 16px}
.mobile-menu a{display:block;padding:12px 10px;color:#34465d;font-weight:650;border-bottom:1px solid #edf1f7}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu.open{display:block}
section{position:relative;padding:82px 0}
.section-tint{background:var(--wash)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:12px}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--blue)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,4.2vw,54px);line-height:1.22;letter-spacing:-1.5px;margin-bottom:20px}
h2{font-size:clamp(26px,3vw,37px);line-height:1.35;letter-spacing:-.7px;margin-bottom:15px}
h3{font-size:19px;line-height:1.45;margin-bottom:9px}
.section-intro{max-width:745px;color:var(--muted);margin-bottom:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:10px;padding:12px 19px;font-size:15px;font-weight:750;border:1px solid transparent}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 9px 18px rgba(20,99,216,.22)}
.btn-primary:hover{background:#2577e8;color:#fff;transform:translateY(-2px);box-shadow:0 13px 24px rgba(20,99,216,.28)}
.btn-secondary{background:#fff;border-color:#b9ceeb;color:var(--blue)}
.btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue);color:var(--blue)}
.tag{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:7px;font-size:12px;font-weight:700;background:var(--blue-soft);color:var(--blue)}
.tag.green{background:var(--cyan-soft);color:#087766}
.tag.orange{background:var(--orange-soft);color:#ad5b0d}
.breadcrumb{padding:19px 0 0;color:#78879a;font-size:13px}
.breadcrumb a{color:var(--blue);font-weight:700}
.breadcrumb span{padding:0 7px;color:#a7b2c1}
.category-hero{padding:54px 0 65px;background:linear-gradient(145deg,#f6faff 0%,#eef5ff 58%,#fff 100%);overflow:hidden}
.category-hero .grid-x{align-items:center}
.category-summary{max-width:700px;color:#52647e;font-size:17px;line-height:1.9;margin-bottom:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:9px}
.hero-image{height:288px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);position:relative}
.hero-image:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,41,81,.15),rgba(10,41,81,.02))}
.hero-image img{height:100%}
.topic-toolbar{border:1px solid var(--line);background:#fff;border-radius:var(--radius-sm);padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:15px;box-shadow:0 8px 22px rgba(28,65,111,.05)}
.toolbar-label{font-weight:800;font-size:14px;white-space:nowrap}
.topic-tabs{display:flex;gap:8px;flex-wrap:wrap}
.topic-tabs button{border:1px solid transparent;background:var(--wash);color:#61718a;border-radius:8px;padding:8px 12px;font-size:13px;font-weight:700}
.topic-tabs button:hover,.topic-tabs button.active{background:var(--blue-soft);color:var(--blue);border-color:#c7dcfa}
.analysis-list{display:grid;gap:17px}
.analysis-item{display:grid;grid-template-columns:220px 1fr;min-height:196px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 8px 23px rgba(28,65,111,.055);transition:transform var(--transition),box-shadow var(--transition)}
.analysis-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.analysis-image{height:100%;min-height:196px}
.analysis-image img{height:100%}
.analysis-content{padding:23px 26px;display:flex;flex-direction:column;align-items:flex-start}
.analysis-content p{color:var(--muted);font-size:14px;line-height:1.72;margin-bottom:14px}
.item-meta{display:flex;align-items:center;gap:11px;flex-wrap:wrap;margin-top:auto;color:#7b899c;font-size:12px}
.item-link{margin-left:auto;color:var(--blue);font-size:14px;font-weight:800}
.item-link:hover{color:var(--blue-dark);transform:translateX(3px)}
.method-panel{background:var(--deep);border-radius:22px;padding:38px;color:#fff;overflow:hidden;position:relative}
.method-panel:after{content:"";width:330px;height:330px;border:1px solid rgba(129,187,255,.16);border-radius:50%;position:absolute;right:-100px;top:-130px}
.method-panel h2{position:relative;z-index:1}
.method-panel p{color:#c2d4ea;max-width:690px;position:relative;z-index:1}
.metric-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:28px}
.metric{background:rgba(255,255,255,.08);border:1px solid rgba(196,221,249,.16);border-radius:12px;padding:17px}
.metric b{display:block;color:#8ddfce;font-size:14px;margin-bottom:7px}
.metric span{display:block;color:#d7e4f3;font-size:13px;line-height:1.55}
.scene-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:28px;align-items:start}
.scene-note{padding:28px;background:var(--blue-soft);border-radius:var(--radius)}
.scene-note p{color:#52647d;margin:0}
.scene-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
.scene-card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:21px;min-height:164px;box-shadow:0 7px 20px rgba(28,65,111,.05)}
.scene-card i{width:37px;height:37px;display:grid;place-items:center;border-radius:10px;background:var(--cyan-soft);color:var(--cyan);margin-bottom:17px}
.scene-card p{font-size:14px;color:var(--muted);line-height:1.65;margin:0}
.trust-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:25px}
.trust-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:29px;box-shadow:0 8px 22px rgba(28,65,111,.05)}
.trust-list{list-style:none;margin:19px 0 0;padding:0}
.trust-list li{border-bottom:1px solid #edf2f8;padding:12px 0;display:flex;justify-content:space-between;gap:18px;font-size:14px}
.trust-list li:last-child{border-bottom:0}
.trust-list strong{color:#40516a;white-space:nowrap}
.trust-list span{text-align:right;color:var(--muted)}
.notice{display:flex;gap:13px;border-radius:13px;padding:18px;background:#fff8ed;border:1px solid #f6dfbb;color:#815820;font-size:14px}
.notice i{color:var(--orange);padding-top:4px}
.accordion{margin:0;background:transparent}
.accordion-item{border:1px solid var(--line);border-radius:12px!important;overflow:hidden;margin-bottom:11px;background:#fff}
.accordion-title{border:0!important;padding:17px 48px 17px 19px!important;font-size:15px;font-weight:800;color:var(--ink)}
.accordion-title:hover,.accordion-title:focus{background:var(--blue-soft);color:var(--blue)}
.accordion-title:before{color:var(--blue);font-size:20px;right:18px!important;margin-top:-14px!important}
.accordion-content{border:0!important;padding:0 20px 19px!important;color:var(--muted);font-size:14px;line-height:1.8}
.cta-section{padding:74px 0;background:linear-gradient(135deg,#e9f3ff,#f9fcff)}
.cta-box{background:#fff;border:1px solid #d7e6f7;border-radius:22px;box-shadow:var(--shadow);padding:42px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta-box p{max-width:630px;color:var(--muted);margin:0}
.footer{background:var(--deep-2);padding:66px 0 22px;color:#d4dfed}
.footer .brand{color:#fff;margin-bottom:16px}
.footer-intro{max-width:300px;color:#aebfd5;font-size:14px;line-height:1.75}
.footer h3{font-size:14px;color:#fff;margin:6px 0 14px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:8px}
.footer-links a{font-size:14px;color:#afc0d5}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:14px;color:#afc0d5}
.footer-contact div{margin-bottom:9px}
.footer-contact i{color:#75b5ff;width:20px}
.footer-bottom{border-top:1px solid rgba(203,224,248,.14);margin-top:42px;padding-top:19px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#91a4bd;font-size:12px}
@media(max-width:1024px){
  .desktop-nav{gap:0}.desktop-nav a{padding:11px 8px;font-size:13px}
  .hero-image{height:250px}.metric-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  section{padding:62px 0}.desktop-nav{display:none}.mobile-toggle{display:inline-grid;place-items:center}
  .nav-row{min-height:67px}.brand{font-size:19px}.category-hero{padding:36px 0 48px}
  .hero-image{margin-top:24px;height:240px}.analysis-item{grid-template-columns:165px 1fr}
  .scene-layout,.trust-grid{grid-template-columns:1fr}.cta-box{padding:30px;display:block}.cta-box .btn{margin-top:22px}
}
@media(max-width:520px){
  body{font-size:15px}.grid-container{padding-left:19px;padding-right:19px}.brand-mark{width:34px;height:34px}
  h1{font-size:33px}.category-summary{font-size:15px}.topic-toolbar{display:block}.toolbar-label{margin-bottom:11px}
  .analysis-item{grid-template-columns:1fr}.analysis-image{height:175px;min-height:0}.analysis-content{padding:20px}
  .item-link{margin-left:0}.item-meta{margin-top:5px}.scene-cards{grid-template-columns:1fr}.metric-grid{grid-template-columns:1fr 1fr}
  .method-panel,.trust-card{padding:24px}.cta-box{padding:25px}.footer{padding-top:48px}
}

/* roulang page: category4 */
:root{
 --blue:#1463d8;--blue-dark:#0b3f93;--blue-soft:#eaf3ff;--cyan:#0b9d8a;--cyan-soft:#e7f8f4;
 --orange:#ee8a23;--ink:#152238;--muted:#607087;--line:#dce6f2;--paper:#fff;
 --wash:#f5f8fc;--deep:#10243e;--deep-2:#0b1930;--radius:18px;--radius-sm:12px;
 --shadow:0 14px 36px rgba(28,65,111,.10);--shadow-hover:0 20px 42px rgba(28,65,111,.17);
 --container:1200px;--transition:.24s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),transform var(--transition),box-shadow var(--transition)}
img{display:block;width:100%;max-width:100%;object-fit:cover}
button,input,textarea{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(20,99,216,.28);outline-offset:3px}
.grid-container{max-width:var(--container)}
.main-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,230,242,.88);transition:box-shadow var(--transition)}
.main-header.scrolled{box-shadow:0 8px 26px rgba(28,65,111,.1)}
.nav-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;white-space:nowrap;font-weight:800;font-size:21px;letter-spacing:-.5px;color:var(--ink)}
.brand-mark{width:37px;height:37px;border-radius:11px;background:linear-gradient(135deg,var(--blue),#3887ef);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 7px 15px rgba(20,99,216,.24)}
.desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:3px}
.desktop-nav a{font-size:14px;font-weight:650;color:#3f5069;padding:12px 12px;border-radius:9px}
.desktop-nav a:hover,.desktop-nav a.active{background:var(--blue-soft);color:var(--blue)}
.nav-cta{margin-left:8px;padding:11px 16px!important;background:var(--blue)!important;color:#fff!important;box-shadow:0 6px 15px rgba(20,99,216,.2)}
.nav-cta:hover{background:#2373e8!important;transform:translateY(-1px)}
.mobile-toggle{display:none;border:0;background:var(--blue-soft);color:var(--blue);width:44px;height:44px;border-radius:10px;font-size:19px}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--line);padding:10px 18px 16px}
.mobile-menu a{display:block;padding:12px 10px;color:#34465d;font-weight:650;border-bottom:1px solid #edf1f7}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu.open{display:block}
section{position:relative;padding:82px 0}
.section-tint{background:var(--wash)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:13px}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--blue)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(32px,4vw,52px);line-height:1.2;letter-spacing:-1.8px;margin-bottom:20px}
h2{font-size:clamp(25px,3vw,36px);line-height:1.32;letter-spacing:-.7px;margin-bottom:14px}
h3{font-size:19px;line-height:1.45;margin-bottom:9px}
.section-intro{max-width:760px;color:var(--muted);margin-bottom:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:10px;padding:12px 19px;font-size:15px;font-weight:750;border:1px solid transparent}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 9px 18px rgba(20,99,216,.22)}
.btn-primary:hover{background:#2577e8;color:#fff;transform:translateY(-2px);box-shadow:0 13px 24px rgba(20,99,216,.28)}
.btn-secondary{background:#fff;border-color:#b9ceeb;color:var(--blue)}
.btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue);color:var(--blue)}
.tag{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:7px;font-size:12px;font-weight:700;background:var(--blue-soft);color:var(--blue)}
.tag.green{background:var(--cyan-soft);color:#087766}
.tag.orange{background:#fff1df;color:#ad5b0d}
.page-intro{padding:66px 0 55px;background:linear-gradient(135deg,#f3f8ff 0%,#fff 70%);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;gap:9px;align-items:center;color:var(--muted);font-size:14px;margin-bottom:22px}
.breadcrumb i{font-size:10px;color:#9dafc5}
.page-intro p{max-width:830px;color:#52647d;font-size:17px;margin-bottom:26px}
.intro-meta{display:flex;gap:9px;flex-wrap:wrap}
.topic-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:0 8px 20px rgba(28,65,111,.05)}
.filter-label{font-weight:800;white-space:nowrap;color:#364861}
.filter-list{display:flex;gap:8px;flex-wrap:wrap}
.filter-list button{border:1px solid var(--line);background:#fff;color:#53647a;padding:8px 13px;border-radius:8px;font-size:13px;font-weight:700;transition:var(--transition)}
.filter-list button:hover,.filter-list button.active{background:var(--blue);border-color:var(--blue);color:#fff}
.topic-list{display:grid;gap:16px}
.topic-card{display:grid;grid-template-columns:235px 1fr;min-height:198px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 24px rgba(28,65,111,.06);transition:var(--transition)}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.topic-image{min-height:198px;overflow:hidden}
.topic-image img{height:100%;transition:transform .5s ease}
.topic-card:hover img{transform:scale(1.045)}
.topic-content{padding:23px 26px}
.topic-content p{color:var(--muted);font-size:14px;line-height:1.7;margin:10px 0 15px}
.topic-foot{display:flex;align-items:center;justify-content:space-between;gap:15px;color:#6c7d93;font-size:13px}
.topic-link{font-weight:800;color:var(--blue)}
.topic-link:hover{color:var(--blue-dark)}
.metric-board{background:var(--deep);color:#e7f1ff;border-radius:var(--radius);padding:34px;overflow:hidden;position:relative}
.metric-board:after{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(103,170,255,.17);border-radius:50%;right:-100px;bottom:-140px}
.metric-board h2{color:#fff;position:relative;z-index:1}
.metric-board .section-intro{color:#b9cae2;position:relative;z-index:1}
.metric-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.metric-item{padding:17px 14px;border-left:1px solid rgba(255,255,255,.18)}
.metric-item b{display:block;color:#7de0cd;font-size:18px;margin-bottom:4px}
.metric-item span{display:block;color:#c0cde0;font-size:13px;line-height:1.55}
.scene-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:stretch}
.scene-photo{min-height:390px;border-radius:var(--radius);overflow:hidden;position:relative}
.scene-photo img{height:100%}
.scene-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,34,62,.06),rgba(9,28,50,.7))}
.scene-caption{position:absolute;z-index:2;left:28px;right:28px;bottom:24px;color:#fff}
.scene-caption strong{font-size:22px;display:block;line-height:1.4}
.scene-caption span{font-size:14px;color:#d4e4fa}
.scene-list{display:grid;gap:13px}
.scene-item{border:1px solid var(--line);border-radius:var(--radius-sm);padding:19px 20px;background:#fff;transition:var(--transition)}
.scene-item:hover{border-color:#a9c8ef;box-shadow:0 9px 20px rgba(28,65,111,.08)}
.scene-item h3{font-size:17px;margin-bottom:5px}
.scene-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
.trust-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}
.trust-card{padding:27px;background:var(--blue-soft);border-radius:var(--radius)}
.trust-card h3{color:var(--blue-dark)}
.trust-card p{font-size:14px;color:#4c6484;margin-bottom:0}
.protocol-list{display:grid;gap:0;border-top:1px solid var(--line)}
.protocol-row{display:grid;grid-template-columns:170px 1fr;padding:18px 0;border-bottom:1px solid var(--line);gap:20px}
.protocol-row b{color:#344963}
.protocol-row span{color:var(--muted);font-size:14px}
.faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:44px;align-items:start}
.faq-side{padding-top:8px}
.faq-side p{color:var(--muted)}
.accordion{margin:0;background:transparent}
.accordion-item{border:1px solid var(--line);border-radius:12px;margin-bottom:11px;overflow:hidden;background:#fff}
.accordion-title{border:0!important;color:var(--ink)!important;font-weight:800;padding:18px 49px 18px 19px!important;line-height:1.55;font-size:15px}
.accordion-title:hover,.accordion-title:focus{background:var(--blue-soft)}
.accordion-title:before{color:var(--blue)!important;font-size:20px!important;right:19px!important;margin-top:-12px!important}
.accordion-content{border:0!important;color:var(--muted);font-size:14px;line-height:1.75;padding:0 19px 19px!important}
.cta-band{background:linear-gradient(120deg,#e8f3ff,#f8fcff);border-top:1px solid #d6e6f8;border-bottom:1px solid #d6e6f8}
.cta-panel{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}
.cta-panel h2{margin-bottom:8px}
.cta-panel p{margin:0;color:#506584}
.footer{background:var(--deep-2);color:#c8d4e5;padding:58px 0 24px}
.footer .brand{color:#fff;margin-bottom:16px}
.footer-intro{font-size:14px;max-width:290px;color:#aebfd5;margin:0}
.footer h3{font-size:15px;color:#fff;margin:4px 0 14px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin:7px 0}
.footer-links a{font-size:14px;color:#afc0d6}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:14px;color:#afc0d6}
.footer-contact div{margin:8px 0;display:flex;gap:9px;align-items:flex-start}
.footer-contact i{color:#76aefc;margin-top:6px}
.footer-bottom{margin-top:37px;padding-top:19px;border-top:1px solid rgba(255,255,255,.13);display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#8196b1;font-size:12px}
@media(max-width:1023px){
 .desktop-nav{display:none}.mobile-toggle{display:grid;place-items:center}
 .topic-card{grid-template-columns:190px 1fr}
 .metric-grid{grid-template-columns:repeat(2,1fr)}
 .faq-layout,.trust-wrap{grid-template-columns:1fr;gap:28px}
}
@media(max-width:639px){
 section{padding:62px 0}.nav-row{min-height:66px}.brand{font-size:18px}.brand-mark{width:34px;height:34px}
 .page-intro{padding:46px 0 40px}.page-intro p{font-size:16px}
 .topic-toolbar{display:block;padding:16px}.filter-label{display:block;margin-bottom:10px}
 .topic-card{grid-template-columns:1fr}.topic-image{height:185px}.topic-content{padding:20px}
 .topic-foot{align-items:flex-start;flex-direction:column;gap:7px}
 .metric-board{padding:25px 21px}.metric-grid{grid-template-columns:1fr}.metric-item{border-left:0;border-bottom:1px solid rgba(255,255,255,.15)}
 .scene-grid{grid-template-columns:1fr}.scene-photo{min-height:285px}.scene-caption{left:20px;right:20px;bottom:18px}
 .protocol-row{grid-template-columns:1fr;gap:5px;padding:15px 0}
 .cta-panel{grid-template-columns:1fr;gap:20px}.cta-panel .btn{width:100%}
 .footer{padding-top:46px}.footer .cell{margin-bottom:24px}.footer-bottom{margin-top:10px}
}

/* roulang page: category5 */
:root{
            --blue:#1463d8;
            --blue-dark:#0b3f93;
            --blue-soft:#eaf3ff;
            --cyan:#0b9d8a;
            --cyan-soft:#e7f8f4;
            --orange:#ee8a23;
            --ink:#152238;
            --muted:#607087;
            --line:#dce6f2;
            --paper:#ffffff;
            --wash:#f5f8fc;
            --wash-2:#eef4fb;
            --deep:#10243e;
            --deep-2:#0b1930;
            --radius:18px;
            --radius-sm:12px;
            --shadow:0 14px 36px rgba(28,65,111,.10);
            --shadow-hover:0 20px 42px rgba(28,65,111,.17);
            --container:1200px;
            --transition:.24s ease;
        }

        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            background:var(--paper);
            color:var(--ink);
            font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
            font-size:16px;
            line-height:1.75;
            overflow-x:hidden;
        }
        a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),transform var(--transition),box-shadow var(--transition),border-color var(--transition),opacity var(--transition)}
        a:hover{color:var(--blue)}
        img{display:block;width:100%;max-width:100%;object-fit:cover}
        button,input,textarea,select{font:inherit}
        button{cursor:pointer}
        ::selection{background:rgba(20,99,216,.14);color:var(--ink)}
        :focus-visible{outline:3px solid rgba(20,99,216,.28);outline-offset:2px}
        .grid-container{
            max-width:var(--container);
            padding-left:18px;
            padding-right:18px;
        }
        section{
            position:relative;
            padding:80px 0;
            scroll-margin-top:110px;
        }
        .section-tint{background:var(--wash)}
        .section-soft{background:linear-gradient(180deg,#fff 0%, #f7fbff 100%)}
        .section-dark{
            background:linear-gradient(180deg,var(--deep) 0%, var(--deep-2) 100%);
            color:#edf5ff;
        }
        .topline{
            background:var(--deep-2);
            color:#c4d8f5;
            font-size:13px;
            letter-spacing:0;
        }
        .topline .grid-x{
            min-height:38px;
            align-items:center;
            justify-content:space-between;
        }
        .topline .topline-left,
        .topline .topline-right{
            display:flex;
            align-items:center;
            gap:14px;
            flex-wrap:wrap;
        }
        .topline i{color:#76b0ff}
        .topline a{color:#dcecff}
        .topline a:hover{color:#fff}
        .main-header{
            position:sticky;
            top:0;
            z-index:60;
            background:rgba(255,255,255,.96);
            backdrop-filter:blur(12px);
            border-bottom:1px solid rgba(220,230,242,.9);
            transition:box-shadow var(--transition),transform var(--transition);
        }
        .main-header.scrolled{box-shadow:0 8px 26px rgba(28,65,111,.10)}
        .nav-row{
            min-height:76px;
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:24px;
        }
        .brand{
            display:flex;
            align-items:center;
            gap:11px;
            white-space:nowrap;
            font-weight:800;
            font-size:21px;
            letter-spacing:0;
            color:var(--ink);
        }
        .brand-mark{
            width:37px;
            height:37px;
            border-radius:11px;
            background:linear-gradient(135deg,var(--blue),#3887ef);
            display:grid;
            place-items:center;
            color:#fff;
            font-size:18px;
            box-shadow:0 7px 15px rgba(20,99,216,.24);
        }
        .desktop-nav{
            display:flex;
            align-items:center;
            justify-content:flex-end;
            gap:4px;
            flex-wrap:wrap;
        }
        .desktop-nav a{
            font-size:14px;
            font-weight:650;
            color:#3f5069;
            padding:12px 12px;
            border-radius:9px;
            letter-spacing:0;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active,
        .desktop-nav a[aria-current="page"]{
            background:var(--blue-soft);
            color:var(--blue);
        }
        .nav-cta{
            margin-left:8px;
            padding:11px 16px !important;
            background:var(--blue) !important;
            color:#fff !important;
            box-shadow:0 6px 15px rgba(20,99,216,.2);
        }
        .nav-cta:hover{
            background:#2577e8 !important;
            color:#fff !important;
            transform:translateY(-1px);
        }
        .mobile-toggle{
            display:none;
            border:0;
            background:var(--blue-soft);
            color:var(--blue);
            width:44px;
            height:44px;
            border-radius:10px;
            font-size:19px;
            box-shadow:inset 0 0 0 1px rgba(20,99,216,.08);
        }
        .mobile-toggle:hover{background:#ddebff}
        .mobile-menu{
            display:none;
            background:#fff;
            border-top:1px solid var(--line);
            padding:10px 18px 16px;
        }
        .mobile-menu a{
            display:block;
            padding:12px 10px;
            color:#34465d;
            font-weight:650;
            border-bottom:1px solid #edf1f7;
        }
        .mobile-menu a:last-child{border-bottom:0}
        .mobile-menu a.active{color:var(--blue)}
        .mobile-menu.open{display:block}

        .eyebrow{
            display:inline-flex;
            align-items:center;
            gap:7px;
            color:var(--blue);
            font-size:13px;
            font-weight:800;
            letter-spacing:.08em;
            margin-bottom:13px;
            text-transform:none;
        }
        .eyebrow:before{
            content:"";
            width:22px;
            height:2px;
            background:var(--blue);
        }
        .section-title{
            font-size:clamp(26px, 3vw, 38px);
            line-height:1.18;
            letter-spacing:0;
            margin:0 0 16px;
        }
        .section-title small{
            display:block;
            font-size:14px;
            color:var(--muted);
            font-weight:600;
            margin-top:8px;
            line-height:1.7;
        }
        .section-intro{
            max-width:760px;
            color:var(--muted);
            margin:0 0 30px;
            font-size:16px;
        }
        .crumbs{
            display:flex;
            align-items:center;
            gap:8px;
            color:#6a7b92;
            font-size:13px;
            margin-bottom:12px;
            flex-wrap:wrap;
        }
        .crumbs a{color:#5d78a0}
        .crumbs a:hover{color:var(--blue)}
        .tag{
            display:inline-flex;
            align-items:center;
            min-height:28px;
            padding:4px 10px;
            border-radius:8px;
            font-size:12px;
            font-weight:700;
            background:var(--blue-soft);
            color:var(--blue);
        }
        .tag.green{background:var(--cyan-soft);color:#087766}
        .tag.orange{background:#fff1df;color:#ad5b0d}
        .tag.ghost{background:#f4f7fb;color:#5d718c}
        .tag.white{
            background:rgba(255,255,255,.12);
            color:#fff;
            border:1px solid rgba(255,255,255,.12);
        }
        .btn{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            gap:8px;
            min-height:48px;
            border-radius:12px;
            padding:12px 19px;
            font-size:15px;
            font-weight:750;
            border:1px solid transparent;
            letter-spacing:0;
            transition:transform var(--transition),box-shadow var(--transition),background var(--transition),color var(--transition),border-color var(--transition);
            text-align:center;
            line-height:1.1;
        }
        .btn-primary{
            background:var(--blue);
            color:#fff;
            box-shadow:0 9px 18px rgba(20,99,216,.22);
        }
        .btn-primary:hover{
            background:#2577e8;
            color:#fff;
            transform:translateY(-2px);
            box-shadow:0 13px 24px rgba(20,99,216,.28);
        }
        .btn-secondary{
            background:#fff;
            border-color:#b9ceeb;
            color:var(--blue);
        }
        .btn-secondary:hover{
            background:var(--blue-soft);
            border-color:var(--blue);
            color:var(--blue);
            transform:translateY(-1px);
        }
        .btn-dark{
            background:#fff;
            color:var(--deep);
            border-color:rgba(255,255,255,.16);
        }
        .btn-dark:hover{
            transform:translateY(-1px);
            box-shadow:0 10px 22px rgba(0,0,0,.15);
        }
        .link-more{
            display:inline-flex;
            align-items:center;
            gap:7px;
            font-weight:700;
            color:var(--blue);
        }
        .link-more:hover{color:var(--blue-dark)}
        .panel{
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            box-shadow:var(--shadow);
        }
        .panel-soft{
            background:linear-gradient(180deg,#fff 0%,#f7fbff 100%);
            border:1px solid #e4edf8;
            border-radius:var(--radius);
            box-shadow:var(--shadow);
        }
        .panel-dark{
            background:rgba(255,255,255,.05);
            border:1px solid rgba(255,255,255,.12);
            border-radius:var(--radius);
            box-shadow:none;
        }

        .page-intro{
            padding-top:44px;
            padding-bottom:40px;
        }
        .intro-shell{
            overflow:hidden;
            position:relative;
        }
        .intro-shell:before{
            content:"";
            position:absolute;
            inset:0;
            background:linear-gradient(90deg,rgba(255,255,255,.94) 0%, rgba(255,255,255,.92) 44%, rgba(255,255,255,.86) 100%);
            z-index:1;
        }
        .intro-shell > .grid-container{
            position:relative;
            z-index:2;
        }
        .intro-copy{
            padding:18px 12px 18px 0;
        }
        .intro-copy h1{
            margin:0 0 16px;
            font-size:clamp(30px, 4vw, 46px);
            line-height:1.12;
            letter-spacing:0;
        }
        .intro-copy p{
            margin:0 0 22px;
            max-width:680px;
            color:#52637b;
            font-size:17px;
            line-height:1.9;
        }
        .hero-tags{
            display:flex;
            gap:9px;
            flex-wrap:wrap;
            margin-bottom:22px;
        }
        .hero-actions{
            display:flex;
            gap:12px;
            flex-wrap:wrap;
        }
        .intro-visual{
            position:relative;
            min-height:420px;
            border-radius:24px;
            overflow:hidden;
            box-shadow:0 24px 44px rgba(23,60,104,.16);
            background:var(--deep);
        }
        .intro-visual img{
            position:absolute;
            inset:0;
            width:100%;
            height:100%;
        }
        .intro-visual:after{
            content:"";
            position:absolute;
            inset:0;
            background:linear-gradient(180deg,rgba(11,31,56,.10) 0%, rgba(11,31,56,.60) 100%);
            z-index:1;
        }
        .visual-overlay{
            position:absolute;
            inset:0;
            z-index:2;
            padding:20px;
            display:flex;
            flex-direction:column;
            justify-content:space-between;
        }
        .visual-kicker{
            display:inline-flex;
            align-self:flex-start;
            padding:7px 11px;
            border-radius:10px;
            background:rgba(255,255,255,.12);
            color:#eaf3ff;
            font-size:12px;
            font-weight:700;
            letter-spacing:0;
            backdrop-filter:blur(8px);
        }
        .visual-stack{
            display:grid;
            grid-template-columns:repeat(2,minmax(0,1fr));
            gap:10px;
        }
        .visual-note{
            padding:14px 15px;
            border-radius:16px;
            background:rgba(255,255,255,.92);
            color:var(--ink);
            box-shadow:0 12px 24px rgba(0,0,0,.10);
        }
        .visual-note b{
            display:block;
            font-size:22px;
            line-height:1.2;
            margin-bottom:4px;
            color:var(--deep);
        }
        .visual-note span{
            display:block;
            font-size:13px;
            color:var(--muted);
            line-height:1.6;
        }
        .visual-pill-row{
            display:flex;
            flex-wrap:wrap;
            gap:8px;
            align-items:center;
        }

        .channel-grid{
            display:grid;
            grid-template-columns:repeat(5,minmax(0,1fr));
            gap:16px;
        }
        .channel-card{
            min-height:168px;
            padding:22px 18px;
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            box-shadow:0 9px 24px rgba(30,67,110,.06);
            display:flex;
            flex-direction:column;
            gap:15px;
            transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
        }
        .channel-card:hover{
            transform:translateY(-4px);
            box-shadow:var(--shadow-hover);
            border-color:#cbdcf0;
        }
        .channel-icon{
            width:46px;
            height:46px;
            border-radius:14px;
            background:var(--blue-soft);
            color:var(--blue);
            display:grid;
            place-items:center;
            font-size:18px;
        }
        .channel-card h3{
            margin:0;
            font-size:18px;
            line-height:1.3;
        }
        .channel-card p{
            margin:0;
            color:var(--muted);
            font-size:14px;
            line-height:1.7;
        }
        .channel-card .link-more{margin-top:auto}

        .news-grid{
            display:grid;
            grid-template-columns:repeat(3,minmax(0,1fr));
            gap:18px;
        }
        .news-card{
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            overflow:hidden;
            box-shadow:0 10px 22px rgba(30,67,110,.07);
            display:flex;
            flex-direction:column;
            min-height:100%;
            transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
        }
        .news-card:hover{
            transform:translateY(-4px);
            box-shadow:var(--shadow-hover);
            border-color:#cdddf1;
        }
        .news-thumb{
            aspect-ratio:16/10;
            overflow:hidden;
            background:#dbe8f8;
        }
        .news-thumb img{
            width:100%;
            height:100%;
            transition:transform .5s ease;
        }
        .news-card:hover .news-thumb img{transform:scale(1.03)}
        .news-body{
            padding:20px 18px 18px;
            display:flex;
            flex-direction:column;
            gap:12px;
            flex:1;
        }
        .news-meta{
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:10px;
            flex-wrap:wrap;
            color:#708199;
            font-size:12px;
        }
        .news-card h3{
            margin:0;
            font-size:18px;
            line-height:1.4;
        }
        .news-card p{
            margin:0;
            color:var(--muted);
            font-size:14px;
            line-height:1.75;
        }
        .tag-row{
            display:flex;
            gap:8px;
            flex-wrap:wrap;
        }
        .news-card .card-actions{
            margin-top:auto;
            display:flex;
            justify-content:space-between;
            align-items:center;
            gap:10px;
            padding-top:3px;
        }

        .method-grid{
            display:grid;
            grid-template-columns:repeat(4,minmax(0,1fr));
            gap:16px;
        }
        .metric-card{
            padding:22px 18px;
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            box-shadow:0 9px 24px rgba(30,67,110,.06);
            min-height:174px;
            transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
        }
        .metric-card:hover{
            transform:translateY(-4px);
            box-shadow:var(--shadow-hover);
            border-color:#cbdcf0;
        }
        .metric-index{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            width:36px;
            height:36px;
            border-radius:12px;
            background:var(--blue-soft);
            color:var(--blue);
            font-weight:800;
            margin-bottom:16px;
        }
        .metric-card h3{
            margin:0 0 10px;
            font-size:17px;
            line-height:1.35;
        }
        .metric-card p{
            margin:0;
            color:var(--muted);
            line-height:1.75;
            font-size:14px;
        }
        .method-summary{
            margin-top:20px;
            display:flex;
            gap:10px;
            flex-wrap:wrap;
        }
        .summary-chip{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:10px 14px;
            border-radius:12px;
            background:#fff;
            border:1px solid var(--line);
            color:#405065;
            font-size:13px;
            font-weight:650;
        }

        .scene-grid{
            display:grid;
            grid-template-columns:1.02fr .98fr;
            gap:18px;
            align-items:stretch;
        }
        .scene-visual{
            min-height:420px;
            border-radius:var(--radius);
            overflow:hidden;
            position:relative;
            box-shadow:var(--shadow);
            background:#dbe8f8;
        }
        .scene-visual img{
            width:100%;
            height:100%;
        }
        .scene-visual:after{
            content:"";
            position:absolute;
            inset:0;
            background:linear-gradient(180deg,rgba(6,20,41,.08),rgba(6,20,41,.60));
        }
        .scene-caption{
            position:absolute;
            inset:auto 22px 22px 22px;
            z-index:2;
            color:#fff;
            display:flex;
            flex-direction:column;
            gap:8px;
        }
        .scene-caption h3{
            margin:0;
            font-size:22px;
            line-height:1.35;
        }
        .scene-caption p{
            margin:0;
            color:#dcecff;
            font-size:14px;
            line-height:1.75;
            max-width:500px;
        }
        .scene-list{
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            box-shadow:var(--shadow);
            padding:22px;
            display:flex;
            flex-direction:column;
            gap:16px;
        }
        .scene-item{
            padding:16px 0;
            border-bottom:1px solid #edf3fa;
        }
        .scene-item:first-child{padding-top:0}
        .scene-item:last-child{padding-bottom:0;border-bottom:0}
        .scene-item h3{
            margin:0 0 8px;
            font-size:17px;
        }
        .scene-item p{
            margin:0;
            color:var(--muted);
            font-size:14px;
            line-height:1.75;
        }

        .dark-band{
            padding:86px 0;
            background:linear-gradient(180deg,var(--deep) 0%, var(--deep-2) 100%);
            color:#edf5ff;
        }
        .dark-band .section-title{color:#fff}
        .dark-band .section-intro{color:#c3d6ec}
        .contrast-grid{
            display:grid;
            grid-template-columns:repeat(2,minmax(0,1fr));
            gap:18px;
        }
        .contrast-card{
            padding:24px;
            border-radius:22px;
            border:1px solid rgba(255,255,255,.10);
            background:rgba(255,255,255,.05);
            box-shadow:0 20px 40px rgba(0,0,0,.14);
        }
        .contrast-card h3{
            margin:0 0 12px;
            font-size:20px;
            line-height:1.35;
        }
        .contrast-card p{
            margin:0 0 18px;
            color:#c5d9ef;
            font-size:14px;
            line-height:1.8;
        }
        .contrast-list{
            list-style:none;
            margin:0;
            padding:0;
            display:grid;
            gap:10px;
        }
        .contrast-list li{
            display:flex;
            gap:10px;
            align-items:flex-start;
            color:#e8f2ff;
            font-size:14px;
            line-height:1.7;
        }
        .contrast-list i{
            color:#6ed8c6;
            margin-top:4px;
        }
        .contrast-card.accent{
            background:linear-gradient(180deg,rgba(20,99,216,.22) 0%, rgba(11,31,56,.50) 100%);
        }
        .contrast-note{
            margin-top:18px;
            padding:16px 18px;
            border-radius:16px;
            background:rgba(255,255,255,.06);
            border:1px dashed rgba(255,255,255,.14);
            color:#d8e9ff;
            font-size:13px;
            line-height:1.7;
        }

        .feed-grid{
            display:grid;
            grid-template-columns:repeat(2,minmax(0,1fr));
            gap:14px;
        }
        .feed-item{
            padding:18px 18px 16px;
            border-radius:16px;
            border:1px solid var(--line);
            background:#fff;
            box-shadow:0 8px 18px rgba(30,67,110,.05);
            display:flex;
            flex-direction:column;
            gap:10px;
        }
        .feed-item .feed-top{
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:12px;
            flex-wrap:wrap;
            color:#69809e;
            font-size:12px;
        }
        .feed-item h3{
            margin:0;
            font-size:17px;
            line-height:1.45;
        }
        .feed-item p{
            margin:0;
            color:var(--muted);
            font-size:14px;
            line-height:1.75;
        }

        .transparency-grid{
            display:grid;
            grid-template-columns:1.1fr .9fr;
            gap:18px;
            align-items:start;
        }
        .transparency-list{
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            box-shadow:var(--shadow);
            padding:22px;
            list-style:none;
            margin:0;
        }
        .transparency-list li{
            display:flex;
            gap:12px;
            padding:14px 0;
            border-bottom:1px solid #edf3fa;
            color:#43536b;
            line-height:1.8;
        }
        .transparency-list li:first-child{padding-top:0}
        .transparency-list li:last-child{padding-bottom:0;border-bottom:0}
        .transparency-list i{
            color:var(--cyan);
            margin-top:4px;
            flex:0 0 auto;
        }
        .notice-card{
            background:linear-gradient(180deg,#f8fbff 0%, #edf5ff 100%);
            border:1px solid #d7e5f7;
            border-radius:var(--radius);
            padding:24px;
            box-shadow:var(--shadow);
        }
        .notice-card h3{
            margin:0 0 12px;
            font-size:18px;
            line-height:1.35;
        }
        .notice-card p{
            margin:0 0 12px;
            color:#53647c;
            line-height:1.8;
            font-size:14px;
        }
        .notice-card .tag-row{margin-top:8px}

        .accordion{
            border:0;
            background:transparent;
            margin:0;
            box-shadow:none;
        }
        .accordion-item{
            margin-bottom:12px;
            border:1px solid var(--line);
            border-radius:16px;
            overflow:hidden;
            background:#fff;
            box-shadow:0 8px 18px rgba(30,67,110,.05);
        }
        .accordion-title{
            padding:18px 18px 18px 54px;
            font-size:16px;
            line-height:1.45;
            color:var(--ink);
            font-weight:700;
            position:relative;
            background:#fff;
        }
        .accordion-title:hover{background:#f8fbff;color:var(--blue)}
        .accordion-title:before{
            content:"+";
            position:absolute;
            left:18px;
            top:50%;
            transform:translateY(-50%);
            width:26px;
            height:26px;
            border-radius:8px;
            display:grid;
            place-items:center;
            color:var(--blue);
            background:var(--blue-soft);
            font-size:18px;
            font-weight:700;
            transition:transform var(--transition),background var(--transition),color var(--transition);
        }
        .accordion-item.is-active .accordion-title{
            background:#f8fbff;
            color:var(--blue-dark);
        }
        .accordion-item.is-active .accordion-title:before{
            content:"−";
            background:var(--blue);
            color:#fff;
        }
        .accordion-content{
            padding:0 18px 18px 54px;
            color:#516179;
            line-height:1.8;
            font-size:14px;
            background:#fff;
        }

        .cta-band{
            padding:82px 0;
            background:linear-gradient(180deg,#f6fbff 0%,#ecf5ff 100%);
        }
        .cta-panel{
            background:#fff;
            border:1px solid #d8e5f4;
            border-radius:24px;
            box-shadow:var(--shadow);
            overflow:hidden;
        }
        .cta-copy{
            padding:28px;
        }
        .cta-copy h2{
            margin:0 0 12px;
            font-size:clamp(24px, 3vw, 34px);
            line-height:1.2;
        }
        .cta-copy p{
            margin:0 0 18px;
            color:#516179;
            line-height:1.85;
        }
        .cta-chips{
            display:flex;
            gap:8px;
            flex-wrap:wrap;
        }
        .consult-form{
            padding:28px;
            background:#f9fcff;
            border-left:1px solid #e5edf7;
        }
        .field{
            margin-bottom:14px;
        }
        .field label{
            display:block;
            margin-bottom:7px;
            font-size:13px;
            font-weight:700;
            color:#405065;
        }
        .field input,
        .field textarea,
        .field select{
            width:100%;
            min-height:48px;
            border-radius:12px;
            border:1px solid #cad8ea;
            background:#fff;
            color:var(--ink);
            padding:12px 14px;
            box-shadow:inset 0 1px 0 rgba(255,255,255,.8);
            transition:border-color var(--transition),box-shadow var(--transition),transform var(--transition),background var(--transition);
        }
        .field textarea{min-height:118px;resize:vertical}
        .field input:focus,
        .field textarea:focus,
        .field select:focus{
            border-color:#8cb8f4;
            box-shadow:0 0 0 4px rgba(20,99,216,.10);
            outline:0;
        }
        .field input.is-invalid,
        .field textarea.is-invalid,
        .field select.is-invalid{
            border-color:#df6f6f;
            box-shadow:0 0 0 4px rgba(223,111,111,.08);
        }
        .form-actions{
            display:flex;
            align-items:center;
            gap:12px;
            flex-wrap:wrap;
            margin-top:8px;
        }
        .status-line{
            margin-top:16px;
            min-height:22px;
            font-size:13px;
            color:#596d86;
        }
        .status-line.success{color:#087766}
        .status-line.error{color:#b14444}
        .privacy-note{
            margin-top:12px;
            font-size:12px;
            line-height:1.7;
            color:#73839a;
        }

        .footer{
            background:linear-gradient(180deg,#111f34 0%, #0b1527 100%);
            color:#d8e4f4;
            padding:64px 0 22px;
        }
        .footer .brand{color:#fff}
        .footer .brand-mark{background:linear-gradient(135deg,#2872e2,#58a3ff)}
        .footer-intro{
            margin:18px 0 0;
            color:#b7c9e0;
            line-height:1.8;
            max-width:320px;
        }
        .footer h3{
            margin:0 0 18px;
            font-size:16px;
            color:#fff;
        }
        .footer-links{
            list-style:none;
            margin:0;
            padding:0;
            display:grid;
            gap:10px;
        }
        .footer-links a{
            color:#c6d5ea;
            font-size:14px;
        }
        .footer-links a:hover{color:#fff}
        .footer-contact{
            display:grid;
            gap:10px;
            font-size:14px;
            color:#c9d8ea;
        }
        .footer-contact i{
            width:20px;
            color:#79b0ff;
            margin-right:8px;
        }
        .footer-bottom{
            margin-top:30px;
            padding-top:18px;
            border-top:1px solid rgba(255,255,255,.10);
            display:flex;
            justify-content:space-between;
            gap:12px;
            flex-wrap:wrap;
            font-size:12px;
            color:#9ab0ca;
        }

        .spaced-top{margin-top:18px}
        .split-grid{
            display:grid;
            grid-template-columns:repeat(2,minmax(0,1fr));
            gap:18px;
        }
        .compact-card{
            background:#fff;
            border:1px solid var(--line);
            border-radius:16px;
            padding:18px;
            box-shadow:0 8px 18px rgba(30,67,110,.05);
        }
        .compact-card h3{
            margin:0 0 10px;
            font-size:18px;
            line-height:1.35;
        }
        .compact-card p{
            margin:0;
            color:var(--muted);
            font-size:14px;
            line-height:1.75;
        }

        .small-rule{
            margin:20px 0 0;
            height:1px;
            background:linear-gradient(90deg,rgba(20,99,216,.18),rgba(20,99,216,0));
        }

        @media (max-width: 1180px){
            .channel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
            .method-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
            .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
        }
        @media (max-width: 1024px){
            .desktop-nav{display:none}
            .mobile-toggle{display:inline-flex;align-items:center;justify-content:center}
            .nav-row{min-height:72px}
            .intro-copy{padding-right:0}
            .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
            .scene-grid,
            .transparency-grid,
            .contrast-grid,
            .split-grid{
                grid-template-columns:1fr;
            }
            .consult-form{border-left:0;border-top:1px solid #e5edf7}
        }
        @media (max-width: 768px){
            section{padding:64px 0}
            .page-intro{padding-top:34px}
            .intro-shell:before{
                background:linear-gradient(180deg,rgba(255,255,255,.97) 0%, rgba(255,255,255,.92) 100%);
            }
            .intro-visual{min-height:320px;margin-top:18px}
            .visual-stack{grid-template-columns:1fr}
            .channel-grid,
            .news-grid,
            .feed-grid,
            .method-grid{
                grid-template-columns:1fr;
            }
            .footer-bottom{
                flex-direction:column;
                gap:6px;
            }
        }
        @media (max-width: 520px){
            .grid-container{padding-left:14px;padding-right:14px}
            .brand{font-size:19px}
            .brand-mark{width:34px;height:34px;border-radius:10px}
            .hero-actions,.cta-chips,.form-actions{width:100%}
            .btn{width:100%}
            .accordion-title{padding-left:50px;font-size:15px}
            .accordion-content{padding-left:50px}
            .scene-caption{inset:auto 16px 16px 16px}
            .scene-visual{min-height:300px}
            .cta-copy,.consult-form{padding:20px}
            .channel-card,.news-body,.metric-card,.feed-item,.compact-card{padding:18px}
        }