/* roulang page: index */
:root{
            --blue:#2f6fed;
            --blue-deep:#1e4fba;
            --blue-soft:#eaf2ff;
            --mint:#daf6ee;
            --mint-deep:#2b9e83;
            --coral:#ff8d71;
            --ink:#172b4d;
            --muted:#6f819c;
            --line:#dfe8f4;
            --paper:#ffffff;
            --bg:#f6f9fd;
            --shadow:0 16px 40px rgba(37,78,133,.10);
            --shadow-sm:0 8px 22px rgba(37,78,133,.08);
            --radius:18px;
        }
        *,*:before,*:after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;background:var(--bg);color:var(--ink);
            font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
            font-size:16px;line-height:1.78;overflow-x:hidden
        }
        a{color:inherit;text-decoration:none;transition:.22s ease}
        img{max-width:100%;display:block}
        button,input,textarea,select{font:inherit}
        .container{max-width:1200px;padding-left:22px;padding-right:22px}
        .site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
        .navbar{min-height:76px}
        .brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.3px;color:var(--ink)}
        .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;box-shadow:0 7px 16px rgba(47,111,237,.25)}
        .brand-mark:after{content:"▶";font-size:14px;margin-left:2px}
        .nav-link{color:var(--muted);font-weight:600;padding:10px 15px!important;border-radius:10px}
        .nav-link:hover,.nav-link.active{color:var(--blue);background:var(--blue-soft)}
        .language{display:flex;align-items:center;border:1px solid var(--line);border-radius:30px;padding:3px;background:#fbfdff;margin-left:10px}
        .language span{padding:5px 10px;font-size:13px;color:var(--muted)}
        .language .selected{background:var(--blue);color:#fff;border-radius:22px}
        .nav-cta,.btn-primary{background:var(--blue);color:#fff;border:0;border-radius:11px;padding:12px 21px;font-weight:700;box-shadow:0 8px 16px rgba(47,111,237,.18)}
        .nav-cta:hover,.btn-primary:hover{background:var(--blue-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 22px rgba(47,111,237,.24)}
        .btn-outline{border:1px solid #b9cce8;color:var(--blue);background:#fff;border-radius:11px;padding:11px 20px;font-weight:700}
        .btn-outline:hover{background:var(--blue-soft);border-color:var(--blue);color:var(--blue-deep);transform:translateY(-2px)}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:1px}
        .eyebrow:before{content:"";width:22px;height:3px;background:var(--coral);border-radius:4px}
        h1,h2,h3{line-height:1.25;letter-spacing:-.7px;font-weight:800}
        h1{font-size:clamp(38px,5vw,66px);margin:16px 0 22px}
        h2{font-size:clamp(28px,3.5vw,42px);margin:8px 0 15px}
        h3{font-size:20px;margin:0 0 8px}
        .lead{color:var(--muted);font-size:18px;line-height:1.9}
        .section{padding:105px 0}
        .section-head{max-width:650px;margin-bottom:42px}
        .section-head p{color:var(--muted);margin:0;font-size:17px}
        .hero{padding:86px 0 72px;background:linear-gradient(180deg,#fff 0%,#f4f8ff 100%);position:relative}
        .hero:after{content:"";position:absolute;right:-90px;top:40px;width:260px;height:260px;border:24px solid #e3edff;border-radius:50%;opacity:.75}
        .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center;position:relative;z-index:1}
        .hero-copy{max-width:650px}
        .hero-copy .lead{max-width:610px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 32px}
        .hero-points{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:14px}
        .hero-points strong{color:var(--ink);display:block;font-size:19px}
        .lead-panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow);position:relative}
        .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
        .panel-label{font-weight:800;font-size:18px}
        .status-dot{font-size:13px;color:var(--mint-deep);background:var(--mint);padding:5px 10px;border-radius:30px}
        .field{margin-bottom:14px}
        .field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px;color:var(--ink)}
        .form-control,.form-select{border:1px solid var(--line);border-radius:10px;padding:12px 14px;color:var(--ink);background:#fbfdff}
        .form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(47,111,237,.12)}
        .form-note{font-size:12px;color:var(--muted);margin-top:12px}
        .section-soft{background:#eef5ff}
        .pain-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:60px;align-items:center}
        .pain-note{border-left:3px solid var(--coral);padding-left:22px;color:var(--muted);font-size:18px}
        .pain-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
        .mini-card,.step-card,.data-card,.content-card,.contact-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
        .mini-card{padding:24px}
        .icon{width:42px;height:42px;border-radius:13px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800;font-size:18px;margin-bottom:18px}
        .mini-card p,.step-card p,.content-card p{color:var(--muted);font-size:14px;margin:0}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
        .step-card{padding:28px;position:relative;overflow:hidden}
        .step-number{color:var(--blue);font-size:42px;font-weight:800;line-height:1;margin-bottom:22px}
        .step-card:after{content:"";position:absolute;right:-24px;bottom:-35px;width:100px;height:100px;border-radius:50%;background:var(--blue-soft)}
        .rail-wrap{overflow:hidden}
        .content-rail{display:grid;grid-template-columns:1.25fr .8fr .8fr;gap:18px}
        .content-card{overflow:hidden;transition:.22s ease}
        .content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
        .cover{height:190px;background:linear-gradient(135deg,#cfe0ff,#8eb5f3);position:relative}
        .content-card:nth-child(2) .cover{background:linear-gradient(135deg,#d8f5ed,#8fd5c0)}
        .content-card:nth-child(3) .cover{background:linear-gradient(135deg,#ffe4d8,#ffae94)}
        .cover:after{content:"▶";position:absolute;left:22px;bottom:18px;width:42px;height:42px;border-radius:50%;background:#fff;color:var(--blue);display:grid;place-items:center;padding-left:2px;box-shadow:0 6px 15px rgba(40,65,100,.15)}
        .content-body{padding:21px}
        .tag{display:inline-block;background:var(--blue-soft);color:var(--blue);padding:4px 9px;border-radius:20px;font-size:12px;font-weight:700;margin-bottom:10px}
        .meta{font-size:12px;color:var(--muted);margin-top:13px}
        .data-band{background:var(--ink);color:#fff;border-radius:24px;padding:35px 42px;display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:28px;align-items:center}
        .data-band p{color:#b9c8dd;margin:0;font-size:14px}
        .metric{border-left:1px solid rgba(255,255,255,.16);padding-left:24px}
        .metric strong{font-size:29px;display:block;color:#fff}
        .metric span{color:#b9c8dd;font-size:13px}
        .live-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}
        .live-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow-sm)}
        .live-cover{height:220px;border-radius:14px;background:linear-gradient(120deg,#315fae,#74a4ee);display:flex;align-items:flex-end;padding:20px;color:#fff;position:relative;overflow:hidden}
        .live-cover:before{content:"";position:absolute;width:180px;height:180px;border:20px solid rgba(255,255,255,.18);border-radius:50%;right:40px;top:20px}
        .live-cover strong{font-size:22px;position:relative;z-index:1}
        .bullet-list{padding:0;margin:18px 0 0;list-style:none}
        .bullet-list li{padding:11px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px}
        .bullet-list li:before{content:"✓";color:var(--mint-deep);font-weight:800;margin-right:10px}
        .start{background:var(--blue-soft)}
        .start-box{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;background:#fff;border:1px solid #cfe0f7;border-radius:22px;padding:38px 42px}
        .start-box p{color:var(--muted);margin:0;max-width:680px}
        .faq-list{max-width:850px}
        .accordion-item{border:1px solid var(--line)!important;border-radius:14px!important;margin-bottom:12px;overflow:hidden;background:#fff}
        .accordion-button{font-weight:700;color:var(--ink);background:#fff;padding:20px 22px;box-shadow:none!important}
        .accordion-button:not(.collapsed){color:var(--blue);background:var(--blue-soft)}
        .accordion-body{color:var(--muted);font-size:14px;padding:0 22px 21px}
        .contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px}
        .contact-card{padding:30px}
        .contact-card p{color:var(--muted)}
        .footer{background:#142642;color:#c7d3e5;padding:54px 0 24px}
        .footer .brand{color:#fff;margin-bottom:15px}
        .footer p{font-size:14px;color:#93a7c2;max-width:360px}
        .footer-links{display:flex;gap:24px;flex-wrap:wrap;justify-content:flex-end}
        .footer-links a{font-size:14px;color:#c7d3e5}
        .footer-links a:hover{color:#fff}
        .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:20px;font-size:12px;color:#8da1bb;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
        @media(max-width:991px){
            .hero-grid,.pain-grid,.live-grid,.contact-grid{grid-template-columns:1fr;gap:35px}
            .hero{padding-top:60px}.content-rail{grid-template-columns:repeat(2,1fr)}
            .content-card:first-child{grid-column:span 2}.data-band{grid-template-columns:repeat(3,1fr)}
            .data-intro{grid-column:span 3}.metric:first-of-type{border-left:0;padding-left:0}
        }
        @media(max-width:767px){
            .navbar{min-height:68px}.brand{font-size:15px}.brand-mark{width:30px;height:30px}
            .language{margin:12px 0}.nav-cta{display:inline-block;margin:7px 0}
            .section{padding:70px 0}.hero{padding:55px 0 55px}
            h1{font-size:39px}.lead{font-size:16px}.pain-list,.steps,.content-rail{grid-template-columns:1fr}
            .content-card:first-child{grid-column:auto}.data-band{grid-template-columns:1fr;padding:28px}
            .data-intro{grid-column:auto}.metric{border-left:0;border-top:1px solid rgba(255,255,255,.16);padding:18px 0 0}
            .start-box{grid-template-columns:1fr;padding:28px}.footer-links{justify-content:flex-start}
        }
        @media(max-width:520px){
            .container{padding-left:17px;padding-right:17px}.hero-actions .btn-primary,.hero-actions .btn-outline{width:100%;text-align:center}
            .lead-panel{padding:22px}.cover{height:170px}.section-head{margin-bottom:28px}
        }

/* roulang page: category1 */
:root{
        --blue:#2f6fed;--blue-deep:#1e4fba;--blue-soft:#eaf2ff;
        --mint:#daf6ee;--mint-deep:#2b9e83;--coral:#ff8d71;
        --ink:#172b4d;--muted:#6f819c;--line:#dfe8f4;--paper:#fff;
        --bg:#f6f9fd;--shadow:0 16px 40px rgba(37,78,133,.10);
        --shadow-sm:0 8px 22px rgba(37,78,133,.08);--radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
    a{color:inherit;text-decoration:none;transition:.22s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    .container{max-width:1200px;padding-left:22px;padding-right:22px}
    .site-header{background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .navbar{min-height:76px}
    .brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.3px;color:var(--ink)}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;box-shadow:0 7px 16px rgba(47,111,237,.25)}
    .brand-mark:after{content:"▶";font-size:14px;margin-left:2px}
    .nav-link{color:var(--muted);font-weight:600;padding:10px 15px!important;border-radius:10px}
    .nav-link:hover,.nav-link.active{color:var(--blue);background:var(--blue-soft)}
    .nav-cta,.btn-primary{background:var(--blue);color:#fff;border:0;border-radius:11px;padding:12px 21px;font-weight:700;box-shadow:0 8px 16px rgba(47,111,237,.18)}
    .nav-cta:hover,.btn-primary:hover{background:var(--blue-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 22px rgba(47,111,237,.24)}
    .btn-outline{border:1px solid #b9cce8;color:var(--blue);background:#fff;border-radius:11px;padding:11px 20px;font-weight:700}
    .btn-outline:hover{background:var(--blue-soft);border-color:var(--blue);color:var(--blue-deep);transform:translateY(-2px)}
    .language{display:flex;gap:3px;padding:4px;background:#f1f5fb;border:1px solid var(--line);border-radius:30px;margin:8px 12px;color:var(--muted);font-size:12px}
    .language span{padding:4px 9px;border-radius:20px}.language .selected{background:#fff;color:var(--blue);font-weight:700;box-shadow:0 2px 7px rgba(40,80,130,.08)}
    .page-hero{padding:68px 0 58px;background:linear-gradient(180deg,#fff 0%,#f2f7ff 100%);position:relative}
    .page-hero:after{content:"";position:absolute;width:210px;height:210px;border:20px solid #e5efff;border-radius:50%;right:8%;top:38px;opacity:.8}
    .page-hero .container{position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:1px}
    .eyebrow:before{content:"";width:22px;height:3px;background:var(--coral);border-radius:4px}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.2;letter-spacing:-1.5px;margin:18px 0 16px;font-weight:850}
    h2{font-size:clamp(25px,3vw,36px);line-height:1.35;margin:0 0 13px;font-weight:800}
    .lead{color:var(--muted);font-size:18px;line-height:1.9;max-width:710px}
    .breadcrumb{margin:0;color:var(--muted);font-size:13px}.breadcrumb-item a{color:var(--blue)}
    .section{padding:78px 0}.section-head{margin-bottom:30px}.section-head p{color:var(--muted);margin:0;font-size:16px}
    .filter-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow-sm);margin-top:28px}
    .filter-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
    .filter-label{font-size:13px;color:var(--muted);font-weight:700;margin-right:3px}
    .filter-chip{border:1px solid var(--line);background:#fbfdff;color:var(--muted);border-radius:24px;padding:8px 15px;font-size:13px;cursor:pointer;transition:.2s}
    .filter-chip:hover,.filter-chip.active{background:var(--blue-soft);border-color:#a9c7fb;color:var(--blue);font-weight:700}
    .filter-search{margin-left:auto;display:flex;gap:8px;min-width:245px}
    .form-control,.form-select{border:1px solid var(--line);border-radius:10px;padding:11px 13px;color:var(--ink);background:#fbfdff}
    .form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(47,111,237,.12)}
    .content-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
    .content-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;display:flex;min-height:215px;transition:.22s ease}
    .content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .cover{width:39%;min-height:215px;background:linear-gradient(135deg,#dceaff,#a9c8fa);position:relative;display:flex;align-items:center;justify-content:center;flex-shrink:0}
    .content-card:nth-child(2) .cover{background:linear-gradient(135deg,#d8f5ed,#8fd5c0)}
    .content-card:nth-child(3) .cover{background:linear-gradient(135deg,#ffe4d8,#ffae94)}
    .content-card:nth-child(4) .cover{background:linear-gradient(135deg,#e8e3ff,#bdb5f1)}
    .cover:before{content:"";width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.78);box-shadow:0 8px 20px rgba(38,78,130,.12)}
    .cover:after{content:"▶";position:absolute;color:var(--blue);font-size:19px;margin-left:4px}
    .content-body{padding:23px 22px;display:flex;flex-direction:column;justify-content:center}
    .tag{display:inline-block;width:max-content;background:var(--blue-soft);color:var(--blue);padding:4px 9px;border-radius:20px;font-size:12px;font-weight:700;margin-bottom:10px}
    .content-body h3{font-size:19px;line-height:1.45;margin:0 0 8px;font-weight:800}
    .content-body p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}
    .meta{font-size:12px;color:var(--muted);margin-top:13px;display:flex;justify-content:space-between;gap:8px}
    .card-link{color:var(--blue);font-size:13px;font-weight:700;margin-top:14px}
    .card-link:hover{color:var(--blue-deep)}
    .pagination{margin-top:36px;justify-content:center;gap:7px}.page-link{border:1px solid var(--line);border-radius:9px!important;color:var(--muted);background:#fff;padding:8px 13px}.page-link:hover,.page-item.active .page-link{background:var(--blue);border-color:var(--blue);color:#fff}
    .empty-state{display:none;text-align:center;background:#fff;border:1px dashed #b9cce8;border-radius:18px;padding:38px;color:var(--muted);grid-column:1/-1}
    .related{background:#eef5ff}.related-list{display:flex;flex-wrap:wrap;gap:12px}.related-link{background:#fff;border:1px solid var(--line);border-radius:13px;padding:13px 18px;color:var(--blue);font-weight:700}.related-link:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
    .faq-list{max-width:850px}.accordion-item{border:1px solid var(--line)!important;border-radius:14px!important;margin-bottom:12px;overflow:hidden;background:#fff}.accordion-button{font-weight:700;color:var(--ink);background:#fff;padding:20px 22px;box-shadow:none!important}.accordion-button:not(.collapsed){color:var(--blue);background:var(--blue-soft)}.accordion-body{color:var(--muted);font-size:14px;padding:0 22px 21px}
    .cta{padding:70px 0}.cta-box{background:var(--ink);color:#fff;border-radius:24px;padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:28px}.cta-box p{color:#b9c8dd;margin:0;max-width:650px}.cta-box .btn-primary{background:var(--coral);box-shadow:none}.cta-box .btn-primary:hover{background:#f5795d}
    .footer{background:#142642;color:#c7d3e5;padding:54px 0 24px}.footer .brand{color:#fff;margin-bottom:15px}.footer p{font-size:14px;color:#93a7c2;max-width:360px}.footer-links{display:flex;gap:24px;flex-wrap:wrap;justify-content:flex-end}.footer-links a{font-size:14px;color:#c7d3e5}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:20px;font-size:12px;color:#8da1bb;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
    :focus-visible{outline:3px solid rgba(47,111,237,.35);outline-offset:3px}
    @media(max-width:991px){.navbar-collapse{padding:14px 0}.language{width:max-content;margin:8px 0}.page-hero:after{right:-70px}.content-grid{grid-template-columns:1fr}.filter-search{margin-left:0;width:100%}.filter-search .form-control{flex:1}.cta-box{padding:35px;flex-direction:column;align-items:flex-start}}
    @media(max-width:767px){.container{padding-left:18px;padding-right:18px}.section{padding:58px 0}.page-hero{padding:48px 0 42px}h1{font-size:36px}.content-card{display:block}.cover{width:100%;min-height:150px}.content-body{padding:20px}.filter-row{gap:8px}.filter-panel{padding:14px}.cta-box{padding:28px 22px}.footer-links{justify-content:flex-start}.copyright{display:block}.copyright span{display:block;margin-bottom:6px}}
    @media(max-width:520px){.filter-chip{padding:7px 11px;font-size:12px}.filter-search{display:block}.filter-search .btn-primary{width:100%;margin-top:8px}.content-body h3{font-size:18px}}