/* roulang page: index */
:root{
      --blue:#2368d7;
      --blue-dark:#1550b2;
      --blue-soft:#eaf2ff;
      --cyan:#21a68a;
      --orange:#f28b4b;
      --ink:#17243b;
      --muted:#64738b;
      --line:#dce6f3;
      --paper:#ffffff;
      --bg:#f5f8fc;
      --shadow:0 16px 42px rgba(32,76,135,.10);
      --shadow-sm:0 8px 24px rgba(32,76,135,.08);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select{font:inherit}
    .container{max-width:1200px}
    .site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1000;backdrop-filter:blur(12px)}
    .navbar{min-height:74px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);letter-spacing:-.4px}
    .brand-mark{width:36px;height:36px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 7px 16px rgba(35,104,215,.25)}
    .brand-name{font-size:17px}
    .navbar-nav{gap:8px}
    .nav-link{color:#56657c!important;padding:10px 14px!important;border-radius:10px;font-weight:600}
    .nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--blue-soft)}
    .nav-cta{background:var(--blue);color:#fff!important;border-radius:11px;padding:10px 17px!important;margin-left:12px;box-shadow:0 7px 16px rgba(35,104,215,.18)}
    .nav-cta:hover{background:var(--blue-dark);transform:translateY(-1px)}
    .hero{padding:88px 0 78px;background:#f5f9ff url('/assets/images/e4fa8630426ddf64.jpg') center/cover no-repeat;position:relative;isolation:isolate}
    .hero:before{content:"";position:absolute;inset:0;background:rgba(247,250,255,.90);z-index:-1}
    .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;border-radius:4px;background:var(--orange)}
    h1,h2,h3{font-weight:800;letter-spacing:-.035em;line-height:1.25}
    h1{font-size:clamp(34px,5vw,60px);margin:18px 0 22px;max-width:700px}
    h2{font-size:clamp(25px,3vw,37px);margin:10px 0 14px}
    h3{font-size:19px;margin:0 0 8px}
    .hero-copy{font-size:17px;color:var(--muted);max-width:680px;margin-bottom:28px}
    .btn-main,.btn-sub{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:12px;font-weight:700;transition:.2s ease;border:1px solid transparent}
    .btn-main{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(35,104,215,.20)}
    .btn-main:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px)}
    .btn-sub{background:#fff;border-color:#bfd2ed;color:var(--blue)}
    .btn-sub:hover{background:var(--blue-soft);color:var(--blue-dark);transform:translateY(-2px)}
    .hero-panel{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:26px;position:relative;overflow:hidden}
    .hero-panel:after{content:"";position:absolute;width:150px;height:150px;border-radius:50%;background:#edf5ff;right:-55px;top:-55px}
    .panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:20px;position:relative;z-index:1}
    .panel-title{font-size:14px;font-weight:800}
    .status{font-size:12px;color:#16866f;background:#e8f8f3;border-radius:20px;padding:5px 10px;font-weight:700}
    .version-number{font-size:44px;line-height:1;color:var(--blue);font-weight:800;margin:8px 0}
    .panel-meta{color:var(--muted);font-size:13px}
    .panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
    .mini-stat{background:#f6f9fd;border-radius:13px;padding:13px}
    .mini-stat b{display:block;font-size:14px;color:var(--ink)}
    .mini-stat span{font-size:12px;color:var(--muted)}
    .section{padding:82px 0}
    .section.alt{background:#edf4fc}
    .section-head{max-width:720px;margin-bottom:34px}
    .section-head p{color:var(--muted);margin:0;font-size:15px}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .stat-card,.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .stat-card{padding:23px}
    .stat-value{font-size:30px;color:var(--blue);font-weight:800;line-height:1.2}
    .stat-label{font-weight:700;margin-top:7px}
    .stat-note{font-size:13px;color:var(--muted)}
    .matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .matrix .card{padding:23px;min-height:180px;transition:.2s}
    .matrix .card:hover,.news-item:hover,.version-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .icon-box{width:42px;height:42px;border-radius:13px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800;margin-bottom:18px}
    .card p,.news-item p,.version-card p{color:var(--muted);font-size:14px;margin:0}
    .compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compare-box{border-radius:var(--radius);padding:28px;border:1px solid var(--line);background:#fff}
    .compare-box.new{background:#f0faf7;border-color:#c9ece1}
    .compare-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
    .compare-list,.check-list{list-style:none;padding:0;margin:0}
    .compare-list li,.check-list li{padding:11px 0;border-bottom:1px dashed var(--line);display:flex;gap:10px;color:#53637b}
    .compare-list li:last-child,.check-list li:last-child{border-bottom:0}
    .tick{color:var(--cyan);font-weight:800}
    .timeline{position:relative;margin-top:28px}
    .timeline:before{content:"";position:absolute;left:84px;top:8px;bottom:8px;width:2px;background:#cbdcf3}
    .time-item{display:grid;grid-template-columns:70px 1fr;gap:38px;position:relative;margin-bottom:24px}
    .time-date{color:var(--blue);font-size:13px;font-weight:800;text-align:right;padding-top:3px}
    .time-content{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px 20px;position:relative}
    .time-content:before{content:"";position:absolute;left:-45px;top:16px;width:12px;height:12px;background:var(--blue);border:3px solid #e7f0fc;border-radius:50%}
    .news-list{display:grid;gap:14px}
    .news-item{display:grid;grid-template-columns:125px 1fr auto;align-items:center;gap:22px;padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:16px;transition:.2s}
    .news-tag{color:var(--blue);background:var(--blue-soft);padding:6px 10px;border-radius:8px;font-size:12px;font-weight:800;display:inline-block}
    .news-date{font-size:12px;color:var(--muted);margin-top:7px}
    .news-arrow{color:var(--blue);font-size:20px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px;position:relative}
    .step-number{font-size:36px;color:#c6dafa;font-weight:800;line-height:1;margin-bottom:20px}
    .step:not(:last-child):after{content:"→";position:absolute;right:-15px;top:40px;color:var(--blue);font-size:22px;z-index:2}
    .security{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .security-main{padding:32px;border-radius:20px;background:var(--blue);color:#fff;box-shadow:var(--shadow)}
    .security-main p{color:#dce9ff}
    .security-main .section-kicker{color:#dbe9ff}
    .security-main .section-kicker:before{background:var(--orange)}
    .security-side{padding:28px;background:#fff;border:1px solid var(--line);border-radius:20px}
    .quick-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .quick-link{background:#fff;border:1px solid var(--line);padding:18px 14px;border-radius:14px;font-weight:700;color:#33445e;transition:.2s}
    .quick-link:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft)}
    .scene-row{display:flex;gap:13px;flex-wrap:wrap}
    .scene{background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px 19px;flex:1 1 200px}
    .scene strong{display:block;margin-bottom:5px}
    .scene span{font-size:13px;color:var(--muted)}
    .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;box-shadow:none!important;padding:19px 22px}
    .accordion-button:not(.collapsed){color:var(--blue);background:var(--blue-soft)}
    .accordion-body{color:var(--muted);padding:0 22px 20px}
    .form-wrap{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:22px;padding:34px}
    .form-label{font-size:13px;font-weight:700;color:#52627a}
    .form-control,.form-select{border:1px solid #cbd9eb;border-radius:11px;min-height:46px;padding:10px 13px}
    .form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(35,104,215,.12)}
    .privacy{font-size:12px;color:var(--muted)}
    .site-footer{background:#17243b;color:#d9e4f5;padding:52px 0 25px}
    .footer-brand{color:#fff;font-size:18px;font-weight:800}
    .footer-copy{color:#9eacc0;font-size:13px;max-width:370px}
    .footer-title{color:#fff;font-weight:700;margin-bottom:14px}
    .footer-links{list-style:none;padding:0;margin:0}
    .footer-links li{margin:8px 0;color:#b4c1d2;font-size:14px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:20px;color:#98a9bf;font-size:12px}
    :focus-visible{outline:3px solid rgba(35,104,215,.35);outline-offset:3px}
    @media(max-width:991px){
      .nav-cta{margin-left:0}
      .stats,.matrix{grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(2,1fr)}
      .step:nth-child(2):after{display:none}
      .security{grid-template-columns:1fr}
      .quick-grid{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:767px){
      .navbar{min-height:66px}
      .brand-name{font-size:15px}
      .hero{padding:58px 0}
      h1{font-size:37px}
      .hero-copy{font-size:15px}
      .hero-panel{margin-top:34px}
      .section{padding:58px 0}
      .stats,.matrix,.compare,.steps{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr;gap:10px}
      .news-arrow{display:none}
      .timeline:before{left:8px}
      .time-item{grid-template-columns:1fr;gap:8px;padding-left:28px}
      .time-date{text-align:left}
      .time-content:before{left:-27px}
      .quick-grid{grid-template-columns:repeat(2,1fr)}
      .step:not(:last-child):after{display:none}
      .form-wrap{padding:22px}
    }
    @media(max-width:520px){
      .quick-grid{grid-template-columns:1fr 1fr}
      .btn-main,.btn-sub{width:100%;margin-bottom:10px}
      .hero-panel{padding:20px}
    }

/* roulang page: category1 */
:root{
            --blue:#2368d7;
            --blue-dark:#1550b2;
            --blue-soft:#eaf2ff;
            --cyan:#21a68a;
            --orange:#f28b4b;
            --ink:#17243b;
            --muted:#64738b;
            --line:#dce6f3;
            --paper:#fff;
            --bg:#f5f8fc;
            --shadow:0 16px 42px rgba(32,76,135,.10);
            --shadow-sm:0 8px 24px rgba(32,76,135,.08);
            --radius:18px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{max-width:100%;display:block}
        button,input,select{font:inherit}
        .container{max-width:1200px}
        .site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1000;backdrop-filter:blur(12px)}
        .navbar{min-height:70px}
        .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);letter-spacing:-.4px}
        .brand-mark{width:36px;height:36px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 7px 16px rgba(35,104,215,.25)}
        .brand-name{font-size:16px}
        .navbar-nav{gap:7px}
        .nav-link{color:#56657c!important;padding:10px 13px!important;border-radius:10px;font-weight:600;transition:.2s ease}
        .nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--blue-soft)}
        .nav-cta{background:var(--blue);color:#fff!important;border-radius:11px;padding:10px 16px!important;margin-left:10px;box-shadow:0 7px 16px rgba(35,104,215,.18)}
        .nav-cta:hover{background:var(--blue-dark);transform:translateY(-1px)}
        .page-heading{padding:54px 0 48px;background:#f4f8ff url('/assets/images/69680ba33c485493.jpg') center/cover no-repeat;position:relative;isolation:isolate;border-bottom:1px solid var(--line)}
        .page-heading:before{content:"";position:absolute;inset:0;background:rgba(247,250,255,.91);z-index:-1}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.05em}
        .eyebrow:before,.section-kicker:before{content:"";width:22px;height:3px;border-radius:4px;background:var(--orange)}
        h1,h2,h3{font-weight:800;letter-spacing:-.03em}
        h1{font-size:clamp(30px,4vw,48px);line-height:1.2;margin:14px 0 16px}
        h2{font-size:clamp(24px,3vw,32px);margin:10px 0}
        h3{font-size:18px;margin:0 0 8px}
        .lead-copy{max-width:730px;color:var(--muted);font-size:16px;margin:0}
        .breadcrumbs{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:18px}
        .breadcrumbs a{color:var(--blue)}
        .section{padding:72px 0}
        .section.alt{background:#edf4fc}
        .section-head{max-width:760px;margin-bottom:30px}
        .section-head p{color:var(--muted);margin:0}
        .filter-bar{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:var(--shadow-sm);display:flex;flex-wrap:wrap;gap:10px;align-items:center}
        .filter-label{font-weight:800;color:var(--ink);padding:8px 10px}
        .filter-btn{border:1px solid #c9d8eb;background:#fff;color:#53637b;border-radius:10px;padding:9px 15px;transition:.2s ease}
        .filter-btn:hover,.filter-btn.active{background:var(--blue-soft);border-color:#9ebce8;color:var(--blue)}
        .list-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:25px;align-items:start}
        .version-list{display:grid;gap:14px}
        .version-row{display:grid;grid-template-columns:115px minmax(0,1fr) auto;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:17px;padding:20px 22px;box-shadow:var(--shadow-sm);transition:.2s ease}
        .version-row:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
        .version-date{color:var(--muted);font-size:13px}
        .version-date strong{display:block;color:var(--blue);font-size:15px;margin-bottom:4px}
        .version-summary{color:var(--muted);font-size:14px;margin:0}
        .version-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:11px}
        .badge-soft,.badge-green,.badge-orange{display:inline-flex;align-items:center;border-radius:8px;padding:5px 9px;font-size:12px;font-weight:800}
        .badge-soft{color:var(--blue);background:var(--blue-soft)}
        .badge-green{color:#16836e;background:#e4f7f1}
        .badge-orange{color:#b8642c;background:#fff0e5}
        .text-link{color:var(--blue);font-weight:700;white-space:nowrap}
        .text-link:hover{color:var(--blue-dark)}
        .side-note{background:var(--blue);color:#fff;border-radius:18px;padding:24px;box-shadow:var(--shadow)}
        .side-note h3{font-size:20px}
        .side-note p{color:#dbe8ff;font-size:14px;margin:0 0 18px}
        .side-list{list-style:none;padding:0;margin:0}
        .side-list li{padding:11px 0;border-top:1px solid rgba(255,255,255,.18);color:#e7efff;font-size:14px}
        .card-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:18px}
        .version-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:.2s ease}
        .version-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
        .version-card.current{border-top:4px solid var(--blue)}
        .version-card.history{border-top:4px solid #a9bbd2}
        .card-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:20px}
        .version-number{font-size:25px;font-weight:800;color:var(--ink)}
        .card-list{list-style:none;padding:0;margin:20px 0 0}
        .card-list li{padding:9px 0;border-bottom:1px dashed var(--line);color:var(--muted);font-size:14px}
        .card-list li:last-child{border-bottom:0}
        .support-panel{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:30px}
        .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:25px}
        .step{position:relative;padding:0 18px 0 0}
        .step:not(:last-child):after{content:"";position:absolute;top:18px;right:14px;width:calc(100% - 64px);height:1px;background:#b9cfea}
        .step-number{position:relative;z-index:1;width:36px;height:36px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:15px;box-shadow:0 5px 12px rgba(35,104,215,.2)}
        .step p{color:var(--muted);font-size:13px;margin:0;max-width:180px}
        .compat-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
        .compat-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px;box-shadow:var(--shadow-sm)}
        .device-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:17px}
        .device-tag{padding:8px 12px;border-radius:10px;background:var(--blue-soft);color:var(--blue);font-weight:700;font-size:13px}
        .check-list{list-style:none;padding:0;margin:0}
        .check-list li{padding:12px 0;border-bottom:1px dashed var(--line);color:var(--muted);display:flex;gap:10px}
        .check-list li:before{content:"✓";color:var(--cyan);font-weight:800}
        .timeline{position:relative;max-width:850px;margin:0 auto}
        .timeline:before{content:"";position:absolute;left:94px;top:8px;bottom:8px;width:2px;background:#c9d9ec}
        .timeline-item{display:grid;grid-template-columns:75px 38px 1fr;gap:18px;align-items:start;margin-bottom:25px;position:relative}
        .timeline-date{font-size:13px;color:var(--muted);padding-top:6px;text-align:right}
        .timeline-dot{width:14px;height:14px;border-radius:50%;background:#a9bdd7;border:4px solid var(--bg);box-shadow:0 0 0 1px #a9bdd7;margin-top:7px;position:relative;z-index:1}
        .timeline-item.current .timeline-dot{background:var(--blue);box-shadow:0 0 0 1px var(--blue)}
        .timeline-content{background:#fff;border:1px solid var(--line);border-radius:15px;padding:17px 20px;box-shadow:var(--shadow-sm)}
        .timeline-content p{color:var(--muted);font-size:14px;margin:0}
        .faq-wrap{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;box-shadow:none!important;padding:18px 21px}
        .accordion-button:not(.collapsed){color:var(--blue);background:var(--blue-soft)}
        .accordion-body{color:var(--muted);padding:0 21px 20px}
        .site-footer{background:#17243b;color:#d9e4f5;padding:52px 0 25px}
        .footer-brand{color:#fff;font-size:18px;font-weight:800}
        .footer-copy{color:#9eacc0;font-size:13px;max-width:370px}
        .footer-title{color:#fff;font-weight:700;margin-bottom:14px}
        .footer-links{list-style:none;padding:0;margin:0}
        .footer-links li{margin:8px 0;color:#b4c1d2;font-size:14px}
        .footer-links a:hover{color:#fff}
        .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:20px;color:#98a9bf;font-size:12px}
        :focus-visible{outline:3px solid rgba(35,104,215,.35);outline-offset:3px}
        @media(max-width:991px){
            .nav-cta{margin:8px 0 0}
            .list-layout,.compat-layout{grid-template-columns:1fr}
            .side-note{max-width:none}
            .card-grid{grid-template-columns:1fr 1fr}
        }
        @media(max-width:767px){
            .navbar{min-height:64px}
            .brand-name{font-size:14px}
            .page-heading{padding:40px 0 36px}
            .section{padding:54px 0}
            .filter-bar{align-items:stretch}
            .filter-label{width:100%}
            .filter-btn{flex:1 1 auto}
            .version-row{grid-template-columns:1fr;gap:10px}
            .version-row .text-link{display:inline-block;margin-top:4px}
            .card-grid{grid-template-columns:1fr}
            .steps{grid-template-columns:1fr;gap:22px}
            .step{padding-left:52px}
            .step:not(:last-child):after{left:18px;top:36px;width:1px;height:calc(100% + 8px)}
            .step-number{position:absolute;left:0;top:0}
            .timeline:before{left:76px}
            .timeline-item{grid-template-columns:58px 36px 1fr;gap:10px}
            .timeline-content{padding:15px}
        }
        @media(max-width:520px){
            body{font-size:14px}
            .brand-mark{width:32px;height:32px;border-radius:10px}
            .breadcrumbs{font-size:12px}
            h1{font-size:30px}
            .filter-btn{flex-basis:45%}
            .support-panel{padding:22px}
        }

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