/* roulang page: index */
:root{
            --blue:#2967c7;
            --blue-deep:#174b9b;
            --blue-soft:#eaf3ff;
            --blue-pale:#f5f9ff;
            --orange:#e69a45;
            --orange-soft:#fff3df;
            --ink:#17283f;
            --muted:#68788d;
            --line:#dce6f2;
            --paper:#ffffff;
            --bg:#f6f9fc;
            --radius-xl:24px;
            --radius-lg:18px;
            --radius-md:12px;
            --shadow:0 14px 36px rgba(42,78,124,.09);
            --shadow-hover:0 20px 44px rgba(42,78,124,.15);
            --ease:all .25s ease;
        }
        *,*::before,*::after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;background:var(--bg);color:var(--ink);
            font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
            font-size:16px;line-height:1.75;
        }
        a{color:var(--blue);text-decoration:none;transition:var(--ease)}
        a:hover{color:var(--blue-deep)}
        img{max-width:100%;display:block}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid rgba(41,103,199,.3);outline-offset:3px}
        .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
        .site-header{padding:22px 0 0;background:var(--bg)}
        .nav-panel{
            display:flex;align-items:center;gap:18px;padding:12px 14px;
            background:rgba(255,255,255,.92);border:1px solid var(--line);
            border-radius:18px;box-shadow:var(--shadow);position:relative;z-index:5;
        }
        .brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;white-space:nowrap;padding:7px 12px}
        .brand-mark{
            width:36px;height:36px;border-radius:11px;background:var(--blue);
            color:#fff;display:grid;place-items:center;font-size:17px;box-shadow:0 7px 14px rgba(41,103,199,.22)
        }
        .brand-name{font-size:18px;letter-spacing:-.4px}
        .nav-links{display:flex;align-items:center;gap:8px;flex:1}
        .nav-card{
            display:flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid transparent;
            border-radius:11px;color:var(--muted);font-size:14px;font-weight:650
        }
        .nav-card span{color:var(--blue);font-size:11px;font-weight:800}
        .nav-card:hover{background:var(--blue-pale);border-color:var(--line);color:var(--blue)}
        .nav-card.active{background:var(--blue-soft);border-color:#c7dcfa;color:var(--blue-deep)}
        .nav-cta,.button-primary{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            border:0;border-radius:10px;background:var(--blue);color:#fff!important;
            padding:11px 18px;font-weight:700;box-shadow:0 8px 16px rgba(41,103,199,.2)
        }
        .nav-cta:hover,.button-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 12px 22px rgba(41,103,199,.25)}
        .button-secondary{
            display:inline-flex;align-items:center;justify-content:center;padding:10px 17px;
            border:1px solid #b9cde7;border-radius:10px;color:var(--blue-deep)!important;background:#fff;font-weight:700
        }
        .button-secondary:hover{background:var(--blue-pale);border-color:var(--blue);transform:translateY(-2px)}
        .hero{padding:58px 0 72px}
        .hero-shell{
            min-height:480px;background:var(--blue-soft);border:1px solid #d2e3f8;border-radius:var(--radius-xl);
            padding:54px 58px;display:grid;grid-template-columns:1.03fr .97fr;gap:52px;align-items:center;overflow:hidden;position:relative
        }
        .hero-shell:after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.4);right:-105px;top:-110px}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
        .eyebrow:before,.section-kicker:before{content:"";width:22px;height:3px;background:var(--orange);border-radius:3px}
        h1,h2,h3{margin:0;line-height:1.25;letter-spacing:-.04em}
        h1{font-size:clamp(38px,5vw,64px);max-width:650px;margin:18px 0 20px}
        .hero-copy{font-size:17px;color:#536b86;max-width:610px;margin:0 0 28px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .hero-notes{display:flex;gap:24px;flex-wrap:wrap;margin-top:30px}
        .hero-note{border-left:2px solid var(--orange);padding-left:12px;color:var(--muted);font-size:13px}
        .hero-note strong{display:block;color:var(--ink);font-size:19px;line-height:1.3}
        .index-board{background:#fff;border:1px solid #d5e1ef;border-radius:20px;padding:18px;box-shadow:0 18px 36px rgba(43,83,132,.11);position:relative;z-index:1}
        .board-head{display:flex;justify-content:space-between;align-items:center;padding:4px 4px 15px;border-bottom:1px solid var(--line)}
        .board-head strong{font-size:16px}
        .live-dot{display:inline-flex;align-items:center;gap:6px;color:#9b6928;font-size:12px}
        .live-dot:before{content:"";width:7px;height:7px;background:var(--orange);border-radius:50%}
        .board-feature{padding:19px 5px 14px}
        .board-feature h3{font-size:22px;margin:7px 0}
        .board-feature p{font-size:13px;color:var(--muted);margin:0}
        .progress{height:7px;background:#edf2f7;border-radius:8px;margin:16px 0 7px;overflow:hidden}
        .progress i{display:block;height:100%;background:var(--blue);border-radius:8px}
        .board-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}
        .board-list{display:grid;gap:9px;margin-top:12px}
        .board-row{display:flex;align-items:center;gap:11px;padding:10px;background:var(--blue-pale);border-radius:10px}
        .row-num{color:var(--blue);font-size:12px;font-weight:800}
        .row-text{flex:1;font-size:13px;color:#3a506b}
        .tag{display:inline-flex;align-items:center;padding:3px 8px;border-radius:6px;background:var(--blue-soft);color:var(--blue);font-size:11px;font-weight:700}
        .tag.warm{background:var(--orange-soft);color:#9a6727}
        .section{padding:78px 0}
        .section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:30px}
        .section-head h2{font-size:clamp(28px,3.4vw,42px);margin-top:10px}
        .section-intro{max-width:535px;color:var(--muted);margin:0}
        .news-layout{display:grid;grid-template-columns:1.22fr .78fr;gap:22px}
        .news-main,.news-side,.service-main,.service-small,.case-card,.step-card,.contact-card,.footer-panel{
            background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)
        }
        .news-main{padding:28px}
        .news-main h3{font-size:25px;margin:14px 0 9px}
        .news-main p{color:var(--muted);margin:0 0 22px}
        .news-links{border-top:1px solid var(--line);margin-top:20px}
        .news-link{display:flex;justify-content:space-between;gap:15px;padding:13px 0;border-bottom:1px solid #edf1f6;color:#40566f;font-size:14px}
        .news-link:hover{color:var(--blue);padding-left:5px}
        .news-link time{white-space:nowrap;color:#9aa8b7;font-size:12px}
        .news-side{padding:25px;background:#f0f6ff}
        .news-side h3{font-size:20px;margin:12px 0}
        .mini-point{display:flex;gap:10px;padding:12px 0;border-bottom:1px solid #dce9f7;font-size:14px;color:#526981}
        .mini-point:last-child{border:0}
        .mini-point b{color:var(--blue);font-size:13px}
        .service-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:20px}
        .service-main{padding:34px;background:var(--blue-deep);color:#fff;min-height:260px}
        .service-main h3{font-size:28px;margin:14px 0 9px}
        .service-main p{color:#dce9fa;max-width:600px;margin:0 0 22px}
        .service-main .tag{background:rgba(255,255,255,.14);color:#fff;margin-right:7px}
        .service-side{display:grid;gap:20px}
        .service-small{padding:24px;display:flex;gap:17px;align-items:flex-start}
        .icon-box{width:43px;height:43px;flex:none;background:var(--orange-soft);color:#a56d29;border-radius:12px;display:grid;place-items:center;font-weight:800}
        .service-small h3{font-size:18px;margin:0 0 4px}
        .service-small p{font-size:13px;color:var(--muted);margin:0}
        .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
        .metric{padding:24px 20px;border:1px solid var(--line);border-radius:16px;background:#fff}
        .metric strong{font-size:31px;color:var(--blue-deep);display:block;line-height:1.2}
        .metric span{display:block;color:var(--muted);font-size:13px;margin-top:7px}
        .metric .metric-line{height:4px;background:#edf2f8;border-radius:8px;margin-top:17px}
        .metric .metric-line i{display:block;height:100%;width:78%;background:var(--orange);border-radius:8px}
        .case-track{display:grid;grid-template-columns:1.25fr .75fr;gap:20px}
        .case-card{padding:28px;position:relative;overflow:hidden}
        .case-card.primary{background:linear-gradient(135deg,#fff 0%,#eef6ff 100%)}
        .case-card h3{font-size:25px;margin:17px 0 8px}
        .case-card p{color:var(--muted);margin:0 0 20px}
        .case-card .state{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;border-top:1px solid var(--line);padding-top:15px}
        .case-stack{display:grid;gap:20px}
        .case-mini{padding:22px}
        .case-mini h3{font-size:18px;margin:12px 0 5px}
        .case-mini p{font-size:13px;color:var(--muted);margin:0}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;position:relative}
        .step-card{padding:26px}
        .step-number{font-size:14px;color:var(--blue);font-weight:800}
        .step-card h3{font-size:20px;margin:14px 0 8px}
        .step-card p{color:var(--muted);font-size:14px;margin:0}
        .faq-wrap{max-width:850px;margin:0 auto}
        .accordion{background:transparent;margin:0}
        .accordion-item{border:1px solid var(--line)!important;border-radius:12px!important;background:#fff;margin-bottom:11px;overflow:hidden}
        .accordion-title{border:0!important;color:var(--ink);font-weight:700;font-size:16px;padding:19px 22px}
        .accordion-title:hover{background:var(--blue-pale);color:var(--blue)}
        .accordion-content{border:0!important;background:#fbfdff;color:var(--muted);font-size:14px;padding:0 22px 19px}
        .contact-section{padding-top:40px}
        .contact-card{padding:36px;display:grid;grid-template-columns:.78fr 1.22fr;gap:45px}
        .contact-card h2{font-size:34px;margin:13px 0}
        .contact-card p{color:var(--muted);margin:0}
        .contact-info{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
        .contact-form{display:grid;grid-template-columns:1fr 1fr;gap:15px}
        label{font-size:13px;font-weight:700;color:#40566f}
        input,select,textarea{width:100%;border:1px solid #cddbea;border-radius:9px;background:#fbfdff;color:var(--ink);padding:11px 13px;margin-top:6px;transition:var(--ease)}
        input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(41,103,199,.1);outline:0;background:#fff}
        textarea{min-height:112px;resize:vertical}
        .field-full{grid-column:1/-1}
        .form-note{font-size:12px;color:#8b9aaa;margin:0}
        .form-success{display:none;color:#2d7652;background:#effaf4;border:1px solid #c8ead5;padding:10px 13px;border-radius:9px;font-size:13px}
        .footer{padding:24px 0 40px}
        .footer-panel{padding:28px 30px;display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
        .footer-brand p{font-size:13px;color:var(--muted);max-width:330px;margin:10px 0 0}
        .footer-nav{display:flex;gap:35px}
        .footer-col strong{font-size:13px;display:block;margin-bottom:9px}
        .footer-col a{display:block;color:var(--muted);font-size:13px;margin:4px 0}
        .footer-col a:hover{color:var(--blue)}
        .copyright{border-top:1px solid var(--line);margin-top:20px;padding-top:16px;color:#95a2b0;font-size:12px;display:flex;justify-content:space-between;gap:20px}
        .muted-link{color:#8595a7}
        .skip-link{position:absolute;left:-9999px}
        .skip-link:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:10}
        @media(max-width:900px){
            .hero-shell{grid-template-columns:1fr;padding:42px 35px}
            .news-layout,.case-track,.contact-card{grid-template-columns:1fr}
            .service-grid{grid-template-columns:1fr}
            .contact-card{gap:28px}
        }
        @media(max-width:700px){
            .container{width:min(100% - 28px,1180px)}
            .site-header{padding-top:14px}
            .nav-panel{flex-wrap:wrap;padding:10px}
            .brand{flex:1}
            .nav-links{order:3;flex:0 0 100%;display:grid;grid-template-columns:repeat(2,1fr);gap:5px}
            .nav-card{padding:8px 9px}
            .nav-cta{padding:9px 12px;font-size:13px}
            .hero{padding:32px 0 42px}
            .hero-shell{padding:30px 22px;gap:28px;border-radius:18px}
            h1{font-size:38px}
            .hero-copy{font-size:15px}
            .section{padding:52px 0}
            .section-head{display:block;margin-bottom:22px}
            .section-intro{margin-top:12px}
            .metrics{grid-template-columns:repeat(2,1fr)}
            .metric strong{font-size:26px}
            .steps{grid-template-columns:1fr}
            .news-main,.news-side,.service-main,.service-small,.case-card,.step-card,.contact-card{padding:22px}
            .contact-form{grid-template-columns:1fr}
            .field-full{grid-column:auto}
            .footer-panel{display:block;padding:24px}
            .footer-nav{margin-top:25px;gap:28px;flex-wrap:wrap}
            .copyright{display:block}
            .copyright span{display:block;margin-top:6px}
        }
        @media(max-width:420px){
            .brand-name{font-size:16px}
            .brand-mark{width:32px;height:32px}
            .hero-actions a{width:100%}
            .metrics{gap:9px}
            .metric{padding:17px 14px}
            .news-link{display:block}
            .news-link time{display:block;margin-top:3px}
        }

/* roulang page: category1 */
:root{
 --blue:#2967c7;--blue-deep:#174b9b;--blue-soft:#eaf3ff;--blue-pale:#f5f9ff;
 --orange:#e69a45;--orange-soft:#fff3df;--ink:#17283f;--muted:#68788d;
 --line:#dce6f2;--paper:#fff;--bg:#f6f9fc;--radius-xl:24px;--radius-lg:18px;
 --radius-md:12px;--shadow:0 14px 36px rgba(42,78,124,.09);
 --shadow-hover:0 20px 44px rgba(42,78,124,.15);--ease:all .25s ease
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:var(--blue);text-decoration:none;transition:var(--ease)}
a:hover{color:var(--blue-deep)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{padding:22px 0 0;background:var(--bg)}
.nav-panel{display:flex;align-items:center;gap:18px;padding:12px 14px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);position:relative;z-index:5}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;white-space:nowrap;padding:7px 12px}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:17px;box-shadow:0 7px 14px rgba(41,103,199,.22)}
.brand-name{font-size:18px;letter-spacing:-.4px}
.nav-links{display:flex;align-items:center;gap:8px;flex:1}
.nav-card{display:flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid transparent;border-radius:11px;color:var(--muted);font-size:14px;font-weight:650}
.nav-card span{color:var(--blue);font-size:11px;font-weight:800}
.nav-card:hover{background:var(--blue-pale);border-color:var(--line);color:var(--blue)}
.nav-card.active{background:var(--blue-soft);border-color:#c7dcfa;color:var(--blue-deep)}
.nav-cta,.button-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;background:var(--blue);color:#fff!important;padding:11px 18px;font-weight:700;box-shadow:0 8px 16px rgba(41,103,199,.2);transition:var(--ease)}
.nav-cta:hover,.button-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 12px 22px rgba(41,103,199,.25)}
.button-secondary{display:inline-flex;align-items:center;justify-content:center;padding:10px 17px;border:1px solid #b9cde7;border-radius:10px;color:var(--blue-deep)!important;background:#fff;font-weight:700;transition:var(--ease)}
.button-secondary:hover{background:var(--blue-pale);border-color:var(--blue);transform:translateY(-2px)}
button:focus,a:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(41,103,199,.25);outline-offset:2px}
.breadcrumb{padding:38px 0 0;color:var(--muted);font-size:13px}
.breadcrumb a{color:var(--blue)}
.page-intro{padding:24px 0 42px;display:flex;justify-content:space-between;align-items:end;gap:30px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before,.section-kicker:before{content:"";width:22px;height:3px;background:var(--orange);border-radius:3px}
h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
h1{font-size:clamp(34px,5vw,58px);margin:12px 0 15px}
.page-intro p{max-width:610px;color:var(--muted);margin:0;font-size:17px}
.index-count{min-width:180px;padding:18px 20px;background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
.index-count strong{display:block;color:var(--blue);font-size:30px;line-height:1.1}
.index-count span{color:var(--muted);font-size:13px}
.filter-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:15px 18px;margin-bottom:24px;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
.filter-label{font-size:13px;font-weight:800;color:var(--ink);margin-right:4px}
.filter{border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 13px;color:var(--muted);font-size:13px;transition:var(--ease)}
.filter:hover,.filter.active{color:var(--blue-deep);background:var(--blue-soft);border-color:#bfd6f4}
.sort-select{margin-left:auto;border:1px solid var(--line);border-radius:9px;color:var(--muted);padding:8px 32px 8px 12px;background:#fff;font-size:13px}
.feature-index{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;margin-bottom:78px}
.feature-card,.side-index,.topic-card,.guide-card,.feedback-card,.footer-panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)}
.feature-card{padding:34px;min-height:310px;background:linear-gradient(135deg,#fff 0%,#eef6ff 100%)}
.feature-card:hover,.topic-card:hover,.guide-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.card-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:6px;background:var(--blue-soft);color:var(--blue);font-size:11px;font-weight:700}
.tag.warm{background:var(--orange-soft);color:#996526}
.feature-card h2{font-size:32px;margin:22px 0 10px}
.feature-card p,.topic-card p,.guide-card p{color:var(--muted);margin:0 0 21px}
.state-line{display:flex;justify-content:space-between;padding-top:17px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
.side-index{padding:25px}
.side-index h3{font-size:20px;margin:0 0 18px}
.mini-item{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}
.mini-item:last-child{border-bottom:0}
.mini-number{width:30px;height:30px;border-radius:9px;background:var(--orange-soft);color:#a36d2a;display:grid;place-items:center;font-weight:800;font-size:12px;flex:none}
.mini-item strong{display:block;font-size:14px}
.mini-item span{color:var(--muted);font-size:12px}
.section{padding:0 0 78px}
.section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:26px}
.section-head h2{font-size:clamp(27px,3.4vw,40px);margin:10px 0 0}
.section-intro{max-width:520px;color:var(--muted);margin:0}
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.topic-card{padding:25px;display:flex;flex-direction:column;min-height:205px;transition:var(--ease)}
.topic-card h3{font-size:22px;margin:15px 0 8px}
.topic-card .topic-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}
.topic-card .topic-foot a{font-weight:700}
.guide-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}
.guide-card{padding:22px;transition:var(--ease)}
.guide-card .guide-no{color:var(--blue);font-size:12px;font-weight:800}
.guide-card h3{font-size:18px;margin:10px 0 7px}
.faq-area{background:var(--blue-pale);padding:70px 0}
.faq-wrap{max-width:850px;margin:0 auto}
.accordion{margin:0;background:transparent}
.accordion-item{border:1px solid var(--line)!important;border-radius:12px!important;margin-bottom:10px;background:#fff;overflow:hidden}
.accordion-title{border:0!important;color:var(--ink);font-weight:700;padding:18px 48px 18px 20px;font-size:15px}
.accordion-title:hover{background:var(--blue-soft);color:var(--blue-deep)}
.accordion-content{border:0!important;background:#fff;color:var(--muted);padding:0 20px 18px;font-size:14px}
.feedback{padding:78px 0}
.feedback-card{padding:34px;display:grid;grid-template-columns:.85fr 1.15fr;gap:45px}
.feedback-card h2{font-size:32px;margin:10px 0}
.feedback-card p{color:var(--muted)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:block;color:var(--ink);font-size:13px;font-weight:700;margin-bottom:6px}
input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff;padding:11px 13px;color:var(--ink);transition:var(--ease)}
input::placeholder,textarea::placeholder{color:#a1adbb}
input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(41,103,199,.1)}
textarea{min-height:112px;resize:vertical}
.form-field{margin-bottom:14px}
.form-note{font-size:12px;color:var(--muted);margin:10px 0 0}
.footer{padding:0 0 24px}
.footer-panel{padding:30px 32px;display:flex;justify-content:space-between;gap:40px}
.footer-brand{max-width:330px}
.footer-brand p{color:var(--muted);font-size:13px;margin:12px 0 0}
.footer-nav{display:flex;gap:60px}
.footer-col{display:flex;flex-direction:column;gap:6px;min-width:105px}
.footer-col strong{font-size:13px;margin-bottom:5px}
.footer-col a{color:var(--muted);font-size:13px}
.footer-col a:hover{color:var(--blue)}
.copyright{display:flex;justify-content:space-between;gap:15px;padding:18px 4px 0;color:#8997a8;font-size:12px}
.muted-link{color:#8997a8}
.empty-state{display:none;padding:25px;text-align:center;color:var(--muted);border:1px dashed #bdcde0;border-radius:14px;background:#fff}
@media(max-width:900px){
 .nav-panel{flex-wrap:wrap}.nav-links{order:3;flex-basis:100%}.page-intro{align-items:start;flex-direction:column}
 .feature-index,.feedback-card{grid-template-columns:1fr}.footer-nav{gap:28px}
}
@media(max-width:640px){
 .container{width:min(100% - 28px,1180px)}.site-header{padding-top:14px}.nav-panel{gap:7px;padding:10px}
 .brand{padding:5px 4px}.brand-name{font-size:16px}.nav-cta{margin-left:auto;padding:9px 11px;font-size:13px}
 .nav-links{display:grid;grid-template-columns:1fr 1fr;gap:5px}.nav-card{padding:8px;font-size:13px}
 .breadcrumb{padding-top:25px}.page-intro{padding:18px 0 30px}.page-intro p{font-size:15px}
 h1{font-size:36px}.index-count{width:100%}.filter-bar{align-items:stretch}.sort-select{margin-left:0;width:100%}
 .feature-card{padding:24px}.feature-card h2{font-size:26px}.topic-grid,.guide-strip{grid-template-columns:1fr}
 .section{padding-bottom:58px}.faq-area,.feedback{padding:56px 0}.feedback-card{padding:24px;gap:24px}
 .form-row{grid-template-columns:1fr}.footer-panel{padding:24px;display:block}.footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:25px;margin-top:25px}
 .copyright{display:block;line-height:2}.copyright span{display:block}
}

/* roulang page: category2 */
:root{
      --blue:#2967c7;
      --blue-deep:#174b9b;
      --blue-soft:#eaf3ff;
      --blue-pale:#f5f9ff;
      --orange:#e69a45;
      --orange-soft:#fff3df;
      --ink:#17283f;
      --muted:#68788d;
      --line:#dce6f2;
      --paper:#fff;
      --bg:#f6f9fc;
      --radius-xl:24px;
      --radius-lg:18px;
      --radius-md:12px;
      --shadow:0 14px 36px rgba(42,78,124,.09);
      --shadow-hover:0 20px 44px rgba(42,78,124,.15);
      --ease:all .25s ease;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--bg);color:var(--ink);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      font-size:16px;line-height:1.75;
    }
    a{color:var(--blue);text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--blue-deep)}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    h1,h2,h3,h4,p{margin-top:0}
    h1,h2,h3,h4{line-height:1.28}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{padding:22px 0 0;background:var(--bg)}
    .nav-panel{
      display:flex;align-items:center;gap:18px;padding:12px 14px;
      background:rgba(255,255,255,.94);border:1px solid var(--line);
      border-radius:18px;box-shadow:var(--shadow);position:relative;z-index:5
    }
    .brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;white-space:nowrap;padding:7px 12px}
    .brand-mark{
      width:36px;height:36px;border-radius:11px;background:var(--blue);color:#fff;
      display:grid;place-items:center;font-size:17px;box-shadow:0 7px 14px rgba(41,103,199,.22)
    }
    .brand-name{font-size:18px;letter-spacing:-.4px}
    .nav-links{display:flex;align-items:center;gap:8px;flex:1}
    .nav-card{
      display:flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid transparent;
      border-radius:11px;color:var(--muted);font-size:14px;font-weight:650
    }
    .nav-card span{color:var(--blue);font-size:11px;font-weight:800}
    .nav-card:hover{background:var(--blue-pale);border-color:var(--line);color:var(--blue)}
    .nav-card.active{background:var(--blue-soft);border-color:#c7dcfa;color:var(--blue-deep)}
    .nav-cta,.button-primary{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;
      border-radius:10px;background:var(--blue);color:#fff!important;padding:11px 18px;
      font-weight:700;box-shadow:0 8px 16px rgba(41,103,199,.2);transition:var(--ease)
    }
    .nav-cta:hover,.button-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 12px 22px rgba(41,103,199,.25)}
    .button-secondary{
      display:inline-flex;align-items:center;justify-content:center;padding:10px 17px;
      border:1px solid #b9cde7;border-radius:10px;color:var(--blue-deep)!important;
      background:#fff;font-weight:700;transition:var(--ease)
    }
    .button-secondary:hover{background:var(--blue-pale);border-color:var(--blue);transform:translateY(-2px)}
    .button-primary:focus,.button-secondary:focus,.nav-cta:focus,.nav-card:focus,.brand:focus,
    input:focus,select:focus,textarea:focus,summary:focus{outline:3px solid rgba(41,103,199,.23);outline-offset:3px}
    .hero{padding:54px 0 42px}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:23px}
    .breadcrumb a{color:var(--blue)}
    .hero-grid{display:grid;grid-template-columns:1fr 360px;gap:44px;align-items:end}
    .eyebrow,.section-kicker{
      display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;
      font-weight:800;letter-spacing:.08em
    }
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:3px;background:var(--orange);border-radius:3px}
    h1{font-size:clamp(34px,5vw,62px);letter-spacing:-1.8px;margin:12px 0 18px;max-width:760px}
    .hero-copy{font-size:18px;color:#536b86;max-width:700px;margin-bottom:25px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-aside{
      background:var(--blue-soft);border:1px solid #d2e3f8;border-radius:var(--radius-lg);
      padding:24px;box-shadow:var(--shadow)
    }
    .aside-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #ccdef2;padding-bottom:15px}
    .aside-top strong{font-size:19px}
    .status-dot{width:9px;height:9px;background:#63a875;border-radius:50%;display:inline-block;margin-right:6px}
    .aside-list{display:grid;gap:12px;padding-top:17px}
    .aside-item{display:flex;gap:12px;align-items:flex-start}
    .aside-index{font-size:12px;color:var(--blue);font-weight:800;padding-top:3px}
    .aside-item b{display:block;font-size:14px}
    .aside-item small{display:block;color:var(--muted);font-size:12px}
    .section{padding:68px 0}
    .section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:28px}
    .section-head h2{font-size:clamp(27px,3.4vw,42px);margin:10px 0 0}
    .section-intro{max-width:530px;color:var(--muted);margin:0}
    .filter-panel{
      background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
      padding:17px 20px;box-shadow:var(--shadow);display:flex;gap:10px;align-items:center;flex-wrap:wrap
    }
    .filter-label{font-size:13px;font-weight:800;color:var(--ink);margin-right:5px}
    .filter-btn{
      border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:9px;
      padding:7px 13px;font-size:13px;transition:var(--ease)
    }
    .filter-btn:hover,.filter-btn.active{background:var(--blue-soft);border-color:#bfd6f3;color:var(--blue-deep)}
    .timeline{position:relative;margin-top:34px}
    .timeline:before{content:"";position:absolute;left:91px;top:8px;bottom:8px;width:1px;background:#cddded}
    .timeline-row{display:grid;grid-template-columns:92px 1fr;gap:28px;position:relative;margin-bottom:22px}
    .timeline-date{font-size:13px;font-weight:800;color:var(--blue);padding-top:22px;text-align:right;padding-right:23px}
    .timeline-row:before{
      content:"";position:absolute;left:86px;top:28px;width:11px;height:11px;
      background:var(--orange);border:3px solid var(--orange-soft);border-radius:50%;z-index:1
    }
    .update-card{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 24px;
      box-shadow:var(--shadow);display:grid;grid-template-columns:142px 1fr auto;gap:22px;align-items:center;
      transition:var(--ease)
    }
    .update-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#bfd6f3}
    .cover{
      height:96px;border-radius:12px;background:linear-gradient(145deg,#dcecff,#f7fbff);
      border:1px solid #cfe0f2;display:flex;align-items:flex-end;padding:11px;position:relative;overflow:hidden
    }
    .cover:after{content:"";position:absolute;width:70px;height:70px;border-radius:50%;right:-20px;top:-18px;background:rgba(41,103,199,.18)}.cover span{position:relative;z-index:1;background:#fff;color:var(--blue-deep);border-radius:6px;padding:3px 7px;font-size:11px;font-weight:800}
    .update-content h3{font-size:20px;margin:0 0 7px}
    .update-content p{color:var(--muted);font-size:14px;margin:0 0 10px;line-height:1.65}
    .meta-line{display:flex;gap:13px;flex-wrap:wrap;color:var(--muted);font-size:12px}
    .meta-line .tag{margin-right:2px}
    .tag{display:inline-flex;align-items:center;padding:3px 8px;border-radius:6px;background:var(--blue-soft);color:var(--blue);font-size:11px;font-weight:700}
    .tag.warm{background:var(--orange-soft);color:#9a6727}
    .tag.gray{background:#f0f3f7;color:#68788d}
    .update-action{white-space:nowrap}
    .progress-strip{
      background:var(--blue-deep);border-radius:var(--radius-lg);padding:25px 28px;color:#fff;
      display:grid;grid-template-columns:1fr 1.3fr;gap:28px;align-items:center;box-shadow:var(--shadow)
    }
    .progress-strip h3{font-size:24px;margin:0 0 7px}
    .progress-strip p{color:#dce9fa;margin:0;font-size:14px}
    .progress-info{display:grid;gap:11px}
    .progress-label{display:flex;justify-content:space-between;color:#dce9fa;font-size:12px}
    .progress-bar{height:8px;background:rgba(255,255,255,.18);border-radius:8px;overflow:hidden}
    .progress-bar i{display:block;height:100%;width:72%;background:var(--orange);border-radius:8px}
    .browse-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}
    .info-card,.empty-card,.faq-wrap,.contact-card{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)
    }
    .info-card{padding:29px}
    .info-card h3{font-size:24px;margin:0 0 10px}
    .info-card p{color:var(--muted);margin-bottom:20px}
    .feature-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .feature-list li{display:flex;gap:12px;align-items:flex-start;color:#425a74;font-size:14px}
    .feature-list li:before{content:"✓";width:22px;height:22px;display:grid;place-items:center;flex:0 0 22px;border-radius:7px;background:var(--blue-soft);color:var(--blue);font-weight:800}
    .mini-stack{display:grid;gap:12px}
    .mini-item{background:var(--blue-pale);border:1px solid #e0ebf7;border-radius:14px;padding:18px}
    .mini-item strong{display:block;font-size:16px;margin-bottom:4px}
    .mini-item span{font-size:13px;color:var(--muted)}
    .faq-wrap{max-width:850px;margin:0 auto;padding:8px 24px}
    details{border-bottom:1px solid var(--line)}
    details:last-child{border-bottom:0}
    summary{list-style:none;cursor:pointer;padding:20px 32px 20px 0;font-weight:750;position:relative}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";position:absolute;right:2px;color:var(--blue);font-size:21px;font-weight:400}
    details[open] summary{color:var(--blue-deep)}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;padding:0 28px 19px 0;margin:0}
    .empty-card{padding:28px;display:flex;justify-content:space-between;gap:20px;align-items:center}
    .empty-card h3{font-size:20px;margin:0 0 5px}
    .empty-card p{margin:0;color:var(--muted);font-size:14px}
    .contact-section{padding:72px 0}
    .contact-card{padding:34px;display:grid;grid-template-columns:.8fr 1.2fr;gap:42px}
    .contact-card h2{font-size:32px;margin:10px 0 12px}
    .contact-card .lead{color:var(--muted);margin:0}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    label{display:block;color:var(--ink);font-size:13px;font-weight:750;margin-bottom:6px}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:10px;background:#fbfdff;
      padding:10px 12px;color:var(--ink);transition:var(--ease)
    }
    input:hover,select:hover,textarea:hover{border-color:#b9cde7}
    input:focus,select:focus,textarea:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(41,103,199,.09)}
    textarea{min-height:112px;resize:vertical}
    .field-full{grid-column:1/-1}
    .form-note{font-size:12px;color:var(--muted);margin:11px 0 0}
    .submit-row{display:flex;align-items:center;gap:14px;margin-top:17px}
    .form-success{display:none;color:#438458;font-size:13px}
    .form-success.show{display:block}
    .footer{padding:0 0 25px}
    .footer-panel{
      display:grid;grid-template-columns:1fr 1.3fr;gap:40px;padding:32px 34px;background:#fff
    }
    .footer-brand p{color:var(--muted);font-size:14px;max-width:300px;margin:15px 0 0}
    .footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .footer-col{display:grid;align-content:start;gap:7px}
    .footer-col strong{font-size:13px;margin-bottom:5px}
    .footer-col a{font-size:13px;color:var(--muted)}
    .footer-col a:hover{color:var(--blue)}
    .copyright{display:flex;justify-content:space-between;gap:20px;padding:18px 4px 0;color:#8492a3;font-size:12px}
    .muted-link{color:#8492a3}
    .top-link{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--blue);display:grid;place-items:center;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:var(--ease);z-index:8}
    .top-link.visible{opacity:1;pointer-events:auto}
    .top-link:hover{background:var(--blue-soft);transform:translateY(-2px)}
    @media(max-width:1024px){
      .hero-grid{grid-template-columns:1fr 320px;gap:25px}
      .update-card{grid-template-columns:120px 1fr auto;gap:17px}
      .contact-card{gap:25px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 28px,620px)}
      .site-header{padding-top:14px}
      .nav-panel{flex-wrap:wrap;gap:8px;padding:10px}
      .brand{padding:5px 7px}
      .nav-links{order:3;flex:0 0 100%;overflow:auto;padding-top:4px}
      .nav-card{flex:1;justify-content:center;min-width:105px}
      .nav-cta{margin-left:auto;padding:9px 13px;font-size:13px}
      .hero{padding:40px 0 28px}
      .hero-grid{grid-template-columns:1fr}
      h1{font-size:42px;letter-spacing:-1px}
      .hero-copy{font-size:16px}
      .section{padding:52px 0}
      .section-head{display:block}
      .section-intro{margin-top:12px}
      .timeline:before{left:8px}
      .timeline-row{display:block;padding-left:28px;margin-bottom:18px}
      .timeline-date{text-align:left;padding:0 0 8px;font-size:12px}
      .timeline-row:before{left:3px;top:5px}
      .update-card{grid-template-columns:105px 1fr;gap:15px;padding:17px}
      .update-action{grid-column:2}
      .cover{height:78px}
      .progress-strip,.browse-layout,.contact-card{grid-template-columns:1fr}
      .contact-card{padding:25px}
      .footer-panel{grid-template-columns:1fr;padding:27px}
    }
    @media(max-width:520px){
      .brand-name{font-size:16px}
      .brand-mark{width:32px;height:32px}
      .nav-cta{font-size:12px;padding:8px 10px}
      .nav-card{font-size:13px;min-width:0;padding:8px 7px}
      h1{font-size:34px}
      .hero-aside{padding:19px}
      .hero-actions a{width:100%}
      .filter-panel{align-items:stretch}
      .filter-label{width:100%}
      .filter-btn{flex:1;padding-left:8px;padding-right:8px}
      .update-card{grid-template-columns:1fr}
      .cover{height:125px}
      .update-action{grid-column:auto;width:100%}
      .update-action a{width:100%}
      .form-grid{grid-template-columns:1fr}
      .field-full{grid-column:auto}
      .submit-row{display:block}
      .submit-row .button-primary{width:100%}
      .footer-nav{grid-template-columns:1fr 1fr}
      .copyright{display:block;line-height:2}
      .copyright span{display:block}
    }