/* roulang page: index */
:root{
            --blue:#2167c7;
            --blue-deep:#124b9a;
            --blue-soft:#eaf3ff;
            --orange:#f59a3d;
            --orange-soft:#fff3e4;
            --ink:#18283d;
            --muted:#64748b;
            --line:#dce7f3;
            --paper:#ffffff;
            --mist:#f5f8fc;
            --shadow:0 16px 42px rgba(27,75,131,.10);
            --shadow-sm:0 8px 22px rgba(27,75,131,.08);
            --radius:18px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            color:var(--ink);
            background:var(--paper);
            font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
            font-size:15px;
            line-height:1.8;
            -webkit-font-smoothing:antialiased;
        }
        a{color:inherit;text-decoration:none;transition:all .25s ease}
        img{display:block;max-width:100%}
        button,input,select,textarea{font:inherit}
        :focus-visible{outline:3px solid rgba(245,154,61,.55);outline-offset:3px}
        .container{max-width:1200px}
        .site-header{
            position:sticky;top:0;z-index:1000;
            background:rgba(255,255,255,.96);
            border-bottom:1px solid var(--line);
            backdrop-filter:blur(12px);
        }
        .navbar{min-height:76px;padding:10px 0}
        .brand{
            display:inline-flex;align-items:center;gap:11px;
            color:var(--ink);font-weight:800;font-size:20px;letter-spacing:-.04em;
        }
        .brand-mark{
            width:38px;height:38px;border-radius:12px;
            display:grid;place-items:center;color:#fff;
            background:linear-gradient(145deg,var(--blue),#4593e6);
            box-shadow:0 7px 16px rgba(33,103,199,.24);
            font-size:16px;
        }
        .nav-link{
            color:#50647d!important;font-weight:600;padding:10px 14px!important;
            border-radius:10px;
        }
        .nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--blue-soft)}
        .nav-cta,.btn-primary{
            background:var(--blue);color:#fff!important;border:1px solid var(--blue);
            border-radius:10px;padding:11px 19px;font-weight:700;
            box-shadow:0 8px 18px rgba(33,103,199,.18);
        }
        .nav-cta:hover,.btn-primary:hover{background:var(--blue-deep);border-color:var(--blue-deep);transform:translateY(-2px)}
        .btn-secondary{
            color:var(--blue);background:#fff;border:1px solid #bcd2ed;
            border-radius:10px;padding:11px 19px;font-weight:700;
        }
        .btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-2px)}
        .hero{
            position:relative;overflow:hidden;padding:78px 0 58px;
            background:
                linear-gradient(90deg,rgba(247,250,254,.97) 0%,rgba(247,250,254,.88) 48%,rgba(247,250,254,.45) 100%),
                url('/assets/images/358172eaed5ec971.jpg') center/cover no-repeat;
        }
        .hero:after{content:"";position:absolute;right:-110px;top:40px;width:310px;height:310px;border:1px solid rgba(33,103,199,.14);border-radius:50%;box-shadow:0 0 0 28px rgba(33,103,199,.04),0 0 0 58px rgba(33,103,199,.025)}
        .hero-content{position:relative;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:24px;height:3px;border-radius:4px;background:var(--orange)}
        h1{font-size:clamp(34px,4vw,56px);line-height:1.2;letter-spacing:-.055em;font-weight:850;margin:18px 0 20px;max-width:720px}
        .hero-lead{font-size:17px;color:#53677e;max-width:690px;margin-bottom:28px}
        .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
        .metric-panel{
            position:relative;z-index:1;background:rgba(255,255,255,.94);
            border:1px solid rgba(220,231,243,.9);border-radius:20px;padding:22px;
            box-shadow:var(--shadow);margin-top:32px;
        }
        .metric-label{color:var(--muted);font-size:13px;margin-bottom:2px}
        .metric-value{font-size:27px;line-height:1.25;font-weight:850;color:var(--blue)}
        .metric-item{padding:8px 18px;border-right:1px solid var(--line)}
        .metric-item:last-child{border-right:0}
        section{padding:82px 0}
        .section-head{max-width:720px;margin-bottom:34px}
        .section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;letter-spacing:-.04em;font-weight:800;margin:10px 0 12px}
        .section-head p{color:var(--muted);margin:0;font-size:16px}
        .soft-section{background:var(--mist)}
        .matrix-grid{display:grid;grid-template-columns:1.25fr .9fr .9fr;grid-template-rows:1fr 1fr;gap:18px}
        .matrix-card,.content-card,.assure-card,.scene-card,.faq-wrap{
            background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);
        }
        .matrix-card{padding:27px;min-height:190px;position:relative;overflow:hidden}
        .matrix-card:first-child{grid-row:span 2;background:linear-gradient(145deg,#1663bd,#398ee0);color:#fff;border:0}
        .matrix-card:first-child p{color:rgba(255,255,255,.8)}
        .matrix-card:hover,.content-card:hover,.assure-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
        .matrix-icon{font-size:28px;margin-bottom:20px;color:var(--orange)}
        .matrix-card:first-child .matrix-icon{color:#ffd18f}
        .matrix-card h3{font-size:20px;font-weight:800;margin-bottom:9px}
        .matrix-card p{color:var(--muted);font-size:14px;margin:0}
        .scene-strip{display:flex;gap:14px;overflow:auto;padding-bottom:8px}
        .scene-card{min-width:220px;padding:22px 20px;flex:1}
        .scene-card strong{display:block;font-size:17px;margin-bottom:8px}
        .scene-card span{color:var(--muted);font-size:14px}
        .scene-dot{width:10px;height:10px;background:var(--orange);border-radius:50%;display:inline-block;margin-right:8px}
        .compare{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
        .compare-row{display:grid;grid-template-columns:1.2fr 1fr 1fr;padding:18px 22px;border-bottom:1px solid var(--line);align-items:center}
        .compare-row:last-child{border-bottom:0}
        .compare-row.header{background:var(--blue);color:#fff;font-weight:700}
        .compare-row:not(.header):nth-child(odd){background:#fbfdff}
        .compare-row span:not(:first-child){font-size:14px;color:var(--muted)}
        .compare-row.header span:not(:first-child){color:#fff}
        .timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
        .timeline:before{content:"";position:absolute;top:17px;left:5%;right:5%;height:2px;background:#c9def5}
        .time-node{position:relative;z-index:1}
        .time-point{width:35px;height:35px;border-radius:50%;display:grid;place-items:center;background:var(--orange);color:#fff;font-weight:800;border:6px solid #fff;box-shadow:0 0 0 1px #f5c58d;margin-bottom:18px}
        .time-node h3{font-size:17px;margin-bottom:7px}
        .time-node p{font-size:14px;color:var(--muted);margin:0}
        .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
        .news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
        .news-item{display:flex;gap:18px;padding:22px;border-bottom:1px solid var(--line);align-items:flex-start}
        .news-item:last-child{border-bottom:0}
        .news-tag,.badge-soft{display:inline-block;padding:4px 9px;border-radius:6px;background:var(--orange-soft);color:#b96916;font-size:12px;font-weight:700}
        .news-item h3{font-size:17px;margin:7px 0 5px}
        .news-item p{font-size:14px;color:var(--muted);margin:0}
        .news-date{margin-left:auto;white-space:nowrap;color:#91a0b2;font-size:13px}
        .feature-image{min-height:100%;border-radius:var(--radius);background:linear-gradient(180deg,rgba(16,54,103,.1),rgba(16,54,103,.66)),url('/assets/images/e871e2338cb1099c.jpg') center/cover;display:flex;align-items:flex-end;padding:26px;color:#fff}
        .feature-image h3{font-size:24px;line-height:1.35;margin:0}
        .assurance-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
        .assure-card{padding:24px}
        .assure-number{font-size:24px;font-weight:850;color:var(--blue);margin-bottom:15px}
        .assure-card h3{font-size:17px;margin-bottom:8px}
        .assure-card p{font-size:14px;color:var(--muted);margin:0}
        .quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
        .quick-step{background:var(--blue-soft);border-radius:16px;padding:22px;min-height:150px}
        .quick-step b{display:grid;place-items:center;width:31px;height:31px;background:var(--blue);color:#fff;border-radius:9px;margin-bottom:16px}
        .quick-step h3{font-size:17px;margin-bottom:6px}
        .quick-step p{font-size:14px;color:var(--muted);margin:0}
        .faq-wrap{padding:10px 22px}
        .accordion-item{border:0;border-bottom:1px solid var(--line)!important}
        .accordion-item:last-child{border-bottom:0!important}
        .accordion-button{font-weight:700;color:var(--ink);padding:21px 5px;background:#fff;box-shadow:none!important}
        .accordion-button:not(.collapsed){color:var(--blue);background:#fff}
        .accordion-body{padding:0 5px 21px;color:var(--muted);font-size:14px}
        .contact-section{background:linear-gradient(120deg,#eaf3ff,#f7fbff)}
        .contact-box{background:#fff;border:1px solid #d4e5f7;border-radius:22px;padding:34px;box-shadow:var(--shadow)}
        .form-label{font-size:13px;font-weight:700;color:#4d6077}
        .form-control,.form-select{border:1px solid #cbdced;border-radius:10px;padding:12px 14px;color:var(--ink)}
        .form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(33,103,199,.12)}
        .privacy-note{font-size:12px;color:#8190a2;margin:14px 0 0}
        footer{background:#142b48;color:#d7e4f4;padding:55px 0 22px}
        footer .brand{color:#fff}
        .footer-title{font-weight:800;color:#fff;margin-bottom:15px}
        .footer-link{display:block;color:#aebfd3;font-size:14px;margin:8px 0}
        .footer-link:hover{color:#fff}
        .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:35px;padding-top:18px;color:#91a7bf;font-size:13px}
        @media (max-width:1199px){.container{max-width:960px}}
        @media (max-width:991px){
            .container{max-width:720px}.matrix-grid{grid-template-columns:1fr 1fr}.matrix-card:first-child{grid-row:auto;grid-column:span 2}.news-layout{grid-template-columns:1fr}.feature-image{min-height:280px}.assurance-grid{grid-template-columns:repeat(2,1fr)}.quick-grid{grid-template-columns:repeat(2,1fr)}.timeline{gap:16px}
        }
        @media (max-width:767px){
            .container{max-width:none;padding-left:20px;padding-right:20px}.navbar{min-height:68px}.hero{padding:55px 0 42px}.hero-lead{font-size:15px}.metric-item{border-right:0;border-bottom:1px solid var(--line);padding:12px 6px}.metric-item:last-child{border-bottom:0}.metric-panel{padding:12px}.metric-value{font-size:22px}section{padding:58px 0}.matrix-grid{display:block}.matrix-card{margin-bottom:14px}.matrix-card:first-child{min-height:180px}.compare-row{grid-template-columns:1.1fr 1fr 1fr;padding:15px 12px;font-size:13px}.timeline{display:block}.timeline:before{left:17px;top:0;bottom:0;width:2px;height:auto;right:auto}.time-node{padding-left:58px;margin-bottom:28px}.time-point{position:absolute;left:0;top:0}.news-item{padding:18px;gap:10px}.news-date{font-size:12px}.assurance-grid,.quick-grid{grid-template-columns:1fr}.contact-box{padding:24px 18px}.brand{font-size:18px}.hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%;text-align:center}
        }
        @media (max-width:575px){h1{font-size:34px}.section-head h2{font-size:28px}.news-item{display:block}.news-date{display:block;margin:8px 0 0}.feature-image{min-height:220px}.scene-card{min-width:205px}}

/* roulang page: category1 */
:root{
 --blue:#2167c7;
 --blue-deep:#124b9a;
 --blue-soft:#eaf3ff;
 --orange:#f59a3d;
 --orange-soft:#fff3e4;
 --ink:#18283d;
 --muted:#64748b;
 --line:#dce7f3;
 --paper:#fff;
 --mist:#f5f8fc;
 --shadow:0 16px 42px rgba(27,75,131,.10);
 --shadow-sm:0 8px 22px rgba(27,75,131,.08);
 --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;color:var(--ink);background:var(--paper);
 font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
 font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:all .25s ease}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
.container{max-width:1200px}
.site-header{
 position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);
 border-bottom:1px solid var(--line);backdrop-filter:blur(12px);
}
.navbar{min-height:76px;padding:10px 0}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;font-size:20px;letter-spacing:-.04em}
.brand-mark{
 width:38px;height:38px;border-radius:12px;display:grid;place-items:center;color:#fff;
 background:linear-gradient(145deg,var(--blue),#4593e6);
 box-shadow:0 7px 16px rgba(33,103,199,.24);font-size:16px;
}
.nav-link{color:#50647d!important;font-weight:600;padding:10px 14px!important;border-radius:10px}
.nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--blue-soft)}
.nav-cta,.btn-primary{
 background:var(--blue);color:#fff!important;border:1px solid var(--blue);
 border-radius:10px;padding:11px 19px;font-weight:700;
 box-shadow:0 8px 18px rgba(33,103,199,.18);
}
.nav-cta:hover,.btn-primary:hover{background:var(--blue-deep);border-color:var(--blue-deep);transform:translateY(-2px)}
.btn-secondary{
 color:var(--blue);background:#fff;border:1px solid #bcd2ed;
 border-radius:10px;padding:11px 19px;font-weight:700;
}
.btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-2px)}
.navbar-toggler{padding:8px;border-radius:9px}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(33,103,199,.18)}
.category-hero{
 position:relative;overflow:hidden;padding:76px 0 68px;
 background:linear-gradient(105deg,rgba(247,250,254,.98) 0%,rgba(247,250,254,.91) 54%,rgba(247,250,254,.42) 100%),url('/assets/images/7847b8e27b59358f.jpg') center/cover no-repeat;
}
.category-hero:after{
 content:"";position:absolute;right:-120px;top:35px;width:360px;height:360px;
 border:1px solid rgba(33,103,199,.16);transform:rotate(18deg);border-radius:42px;
 box-shadow:0 0 0 24px rgba(33,103,199,.035),0 0 0 52px rgba(33,103,199,.022);
}
.hero-inner{position:relative;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:24px;height:3px;border-radius:4px;background:var(--orange)}
h1,h2,h3{letter-spacing:-.035em}
h1{font-size:clamp(34px,5vw,58px);line-height:1.18;font-weight:850;margin:15px 0 18px;max-width:760px}
.hero-lead{font-size:17px;color:#53677e;max-width:700px;margin:0 0 25px}
.hero-panel{
 background:rgba(255,255,255,.88);border:1px solid rgba(220,231,243,.9);
 border-radius:var(--radius);box-shadow:var(--shadow);padding:23px;
}
.hero-panel strong{display:block;font-size:28px;color:var(--blue);line-height:1.2}
.hero-panel small{color:var(--muted)}
.hero-panel .panel-line{padding:13px 0;border-bottom:1px solid var(--line)}
.hero-panel .panel-line:last-child{border-bottom:0;padding-bottom:0}
section{padding:78px 0}
.soft-section{background:var(--mist)}
.section-head{max-width:730px;margin-bottom:32px}
.section-head h2{font-size:clamp(27px,3vw,38px);line-height:1.3;font-weight:800;margin:10px 0 12px}
.section-head p{color:var(--muted);margin:0;font-size:16px}
.filter-bar{
 display:flex;flex-wrap:wrap;align-items:center;gap:10px;
 padding:14px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow-sm);
}
.filter-label{font-weight:800;color:var(--ink);margin-right:4px}
.filter-btn{
 border:1px solid #c9daed;background:#fff;color:#526b87;padding:9px 15px;
 min-height:42px;border-radius:9px;font-weight:600;cursor:pointer;transition:.25s;
}
.filter-btn:hover,.filter-btn.active{background:var(--blue);border-color:var(--blue);color:#fff}
.rank-list{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;box-shadow:var(--shadow-sm)}
.rank-item{
 display:grid;grid-template-columns:56px 112px 1fr auto;gap:20px;align-items:center;
 padding:20px 24px;border-bottom:1px solid var(--line);transition:.25s;
}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:#fafdff}
.rank-no{font-size:25px;font-weight:850;color:#aab9cb;text-align:center}
.rank-item:nth-child(1) .rank-no,.rank-item:nth-child(2) .rank-no,.rank-item:nth-child(3) .rank-no{color:var(--orange)}
.cover{
 width:112px;height:136px;border-radius:12px;overflow:hidden;
 background:#dfeaf6;position:relative;
}
.cover img{width:100%;height:100%;object-fit:cover}
.rank-content h3{font-size:20px;margin:7px 0 6px;font-weight:800}
.rank-content p{margin:0;color:var(--muted);font-size:14px;max-width:620px}
.rank-meta{text-align:right;color:var(--muted);font-size:13px;white-space:nowrap}
.tag,.status{
 display:inline-block;padding:4px 9px;border-radius:6px;font-size:12px;font-weight:700;
}
.tag{background:var(--orange-soft);color:#b96916}
.status{background:var(--blue-soft);color:var(--blue)}
.topic-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.topic-feature{
 min-height:270px;border-radius:var(--radius);padding:30px;color:#fff;
 display:flex;align-items:flex-end;background:linear-gradient(180deg,rgba(18,75,154,.08),rgba(18,75,154,.82)),url('/assets/images/3301a7b9474052d5.jpg') center/cover;
 box-shadow:var(--shadow)
}
.topic-feature h3{font-size:28px;line-height:1.35;margin:0 0 8px}
.topic-feature p{margin:0;color:rgba(255,255,255,.82)}
.topic-side{display:grid;gap:16px}
.topic-card,.label-card,.update-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:23px;box-shadow:var(--shadow-sm);
}
.topic-card h3,.label-card h3,.update-card h3{font-size:19px;margin:0 0 8px}
.topic-card p,.label-card p,.update-card p{font-size:14px;color:var(--muted);margin:0}
.label-wrap{display:flex;flex-wrap:wrap;gap:10px}
.label-pill{padding:9px 14px;border-radius:9px;background:#fff;border:1px solid var(--line);color:#526b87;font-weight:600}
.label-pill.hot{background:var(--orange-soft);border-color:#f8d3a8;color:#a96015}
.timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.timeline:before{content:"";position:absolute;left:9%;right:9%;top:19px;height:2px;background:#c8dcf2}
.timeline-item{position:relative;padding-top:47px}
.timeline-dot{position:absolute;top:10px;left:0;width:20px;height:20px;border:5px solid #fff;border-radius:50%;background:var(--orange);box-shadow:0 0 0 2px var(--blue)}
.timeline-item h3{font-size:18px;margin:0 0 8px}
.timeline-item p{color:var(--muted);font-size:14px;margin:0}
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px 22px;box-shadow:var(--shadow-sm)}
.accordion-item{border:0!important;border-bottom:1px solid var(--line)!important}
.accordion-item:last-child{border-bottom:0!important}
.accordion-button{font-weight:700;color:var(--ink);padding:20px 4px;background:#fff!important;box-shadow:none!important}
.accordion-button:not(.collapsed){color:var(--blue)}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(33,103,199,.14)!important}
.accordion-body{padding:0 4px 20px;color:var(--muted);font-size:14px}
.cta-band{
 background:linear-gradient(110deg,#eaf3ff,#f8fbff);
 border:1px solid #cfe1f4;border-radius:var(--radius);padding:36px 40px;
}
.cta-band h2{font-size:28px;margin:0 0 9px}
.cta-band p{color:var(--muted);margin:0}
.form-control,.form-select{
 border:1px solid #c9daed;border-radius:10px;padding:12px 14px;color:var(--ink);
}
.form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(33,103,199,.12)}
footer{background:#10243d;color:#fff;padding:60px 0 24px}
footer .brand{color:#fff}
.footer-title{font-weight:800;margin-bottom:14px}
.footer-link{display:block;color:#aebfd3;font-size:14px;margin:8px 0}
.footer-link:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(174,191,211,.2);margin-top:38px;padding-top:18px;color:#aebfd3;font-size:13px}
@media(max-width:992px){
 .navbar-nav{padding:16px 0}
 .nav-link{display:block}
 .topic-grid{grid-template-columns:1fr}
 .rank-item{grid-template-columns:44px 92px 1fr}
 .rank-meta{grid-column:3;text-align:left}
 .cover{width:92px;height:116px}
}
@media(max-width:768px){
 section{padding:58px 0}
 .category-hero{padding:58px 0 48px}
 h1{font-size:38px}
 .hero-panel{margin-top:25px}
 .timeline{grid-template-columns:1fr;gap:26px}
 .timeline:before{left:9px;top:17px;bottom:17px;width:2px;height:auto;right:auto}
 .timeline-item{padding:0 0 0 43px}
 .timeline-dot{left:0;top:3px}
 .cta-band{padding:28px 23px}
}
@media(max-width:576px){
 body{font-size:14px}
 .container{padding-left:18px;padding-right:18px}
 h1{font-size:32px}
 .hero-lead{font-size:15px}
 .filter-bar{overflow-x:auto;flex-wrap:nowrap;padding:11px}
 .filter-label{white-space:nowrap}
 .filter-btn{white-space:nowrap}
 .rank-item{grid-template-columns:34px 78px 1fr;gap:12px;padding:16px 13px}
 .rank-no{font-size:20px}
 .cover{width:78px;height:104px}
 .rank-content h3{font-size:16px}
 .rank-content p{font-size:13px;line-height:1.6}
 .rank-meta{grid-column:3;font-size:12px}
 .topic-feature{min-height:230px;padding:22px}
 .topic-feature h3{font-size:23px}
}

/* roulang page: category2 */
:root{
 --blue:#2167c7;--blue-deep:#124b9a;--blue-soft:#eaf3ff;
 --orange:#f59a3d;--orange-soft:#fff3e4;--ink:#18283d;
 --muted:#64748b;--line:#dce7f3;--paper:#fff;--mist:#f5f8fc;
 --shadow:0 16px 42px rgba(27,75,131,.10);--shadow-sm:0 8px 22px rgba(27,75,131,.08);
 --radius:18px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:all .25s ease}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
.container{max-width:1200px}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.navbar{min-height:76px;padding:10px 0}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;font-size:20px;letter-spacing:-.04em}
.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--blue),#4593e6);box-shadow:0 7px 16px rgba(33,103,199,.24);font-size:16px}
.nav-link{color:#50647d!important;font-weight:600;padding:10px 14px!important;border-radius:10px}
.nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--blue-soft)}
.nav-cta,.btn-primary{background:var(--blue);color:#fff!important;border:1px solid var(--blue);border-radius:10px;padding:11px 19px;font-weight:700;box-shadow:0 8px 18px rgba(33,103,199,.18)}
.nav-cta:hover,.btn-primary:hover{background:var(--blue-deep);border-color:var(--blue-deep);transform:translateY(-2px)}
.btn-secondary{color:var(--blue);background:#fff;border:1px solid #bcd2ed;border-radius:10px;padding:11px 19px;font-weight:700}
.btn-secondary:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-2px)}
.navbar-toggler{padding:8px;border-radius:9px}
.navbar-toggler:focus,.btn:focus,.filter-btn:focus{box-shadow:0 0 0 4px rgba(33,103,199,.18);outline:0}
.page-intro{padding:76px 0 54px;background:linear-gradient(90deg,rgba(247,250,254,.97),rgba(247,250,254,.83)),url('/assets/images/a2b87af9e8fd3614.jpg') center/cover}
.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:24px;height:3px;border-radius:4px;background:var(--orange)}
.page-intro h1{font-size:clamp(30px,4vw,52px);line-height:1.25;letter-spacing:-.05em;font-weight:800;margin:15px 0 17px;max-width:730px}
.intro-copy{font-size:17px;color:#53677e;max-width:720px;margin:0}
.intro-panel{background:rgba(255,255,255,.9);border:1px solid rgba(220,231,243,.9);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.intro-panel strong{font-size:27px;color:var(--blue);display:block;line-height:1.2}
.intro-panel span{font-size:13px;color:var(--muted)}
section{padding:78px 0}
.soft-section{background:var(--mist)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;letter-spacing:-.04em;font-weight:800;margin:10px 0 12px}
.section-head p{color:var(--muted);margin:0;font-size:16px}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm)}
.filter-btn{border:1px solid #cbdced;background:#fff;color:#53677e;border-radius:9px;padding:9px 15px;cursor:pointer;transition:.25s}
.filter-btn:hover,.filter-btn.active{background:var(--blue);border-color:var(--blue);color:#fff}
.content-card{height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.cover{height:190px;position:relative;background-size:cover;background-position:center}
.cover:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 38%,rgba(14,42,76,.7))}
.cover-label{position:absolute;z-index:1;left:16px;bottom:14px;color:#fff;font-weight:800;font-size:18px}
.card-body{padding:21px}
.card-body h3{font-size:20px;margin:0 0 8px;font-weight:800}
.card-body p{color:var(--muted);font-size:14px;margin:0 0 15px}
.badge-soft,.tag{display:inline-block;padding:4px 9px;border-radius:6px;background:var(--orange-soft);color:#b96916;font-size:12px;font-weight:700}
.tag{background:var(--blue-soft);color:var(--blue);margin:4px 4px 0 0}
.topic-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow-sm)}
.topic-panel h3{font-size:21px;margin:0 0 12px}
.topic-panel p{color:var(--muted);margin:0 0 18px}
.feature-banner{min-height:310px;border-radius:var(--radius);overflow:hidden;background:linear-gradient(90deg,rgba(13,46,91,.88),rgba(13,46,91,.25)),url('/assets/images/7847b8e27b59358f.jpg') center/cover;color:#fff;padding:42px;display:flex;align-items:flex-end}
.feature-banner h2{font-size:32px;line-height:1.3;margin:8px 0 10px}
.feature-banner p{color:rgba(255,255,255,.82);max-width:580px;margin:0}
.timeline{position:relative;padding-left:28px}
.timeline:before{content:"";position:absolute;left:5px;top:7px;bottom:7px;width:2px;background:#bdd5f2}
.timeline-item{position:relative;padding:0 0 25px 22px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item:before{content:"";position:absolute;left:-28px;top:7px;width:12px;height:12px;border:3px solid var(--orange);background:#fff;border-radius:50%;box-shadow:0 0 0 5px var(--orange-soft)}
.timeline-item strong{display:block;font-size:17px;margin-bottom:4px}
.timeline-item span{color:var(--muted);font-size:14px}
.guide-list{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
.guide-item{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px;box-shadow:var(--shadow-sm)}
.guide-number{color:var(--orange);font-weight:800;font-size:25px;line-height:1}
.guide-item h3{font-size:17px;margin:13px 0 6px}
.guide-item p{color:var(--muted);font-size:14px;margin:0}
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px 22px;box-shadow:var(--shadow-sm)}
.accordion-item{border:0;border-bottom:1px solid var(--line)!important}
.accordion-item:last-child{border-bottom:0!important}
.accordion-button{font-weight:700;color:var(--ink);padding:19px 4px;background:#fff;box-shadow:none!important}
.accordion-button:not(.collapsed){color:var(--blue);background:#fff}
.accordion-body{padding:0 4px 19px;color:var(--muted);font-size:14px}
.cta-box{background:var(--blue-soft);border:1px solid #cfe1f6;border-radius:var(--radius);padding:34px 38px}
.cta-box h2{font-size:28px;margin:0 0 8px}
.cta-box p{color:var(--muted);margin:0}
footer{background:#12263f;color:#fff;padding:58px 0 22px}
footer .brand{color:#fff}
.footer-title{font-weight:800;margin-bottom:13px}
.footer-link{display:block;color:#aebfd3;font-size:14px;margin:7px 0}
.footer-link:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(174,191,211,.2);margin-top:38px;padding-top:18px;color:#aebfd3;font-size:13px}
@media(max-width:992px){.guide-list{grid-template-columns:repeat(2,1fr)}.page-intro{padding:62px 0 45px}}
@media(max-width:768px){section{padding:58px 0}.page-intro h1{font-size:35px}.intro-panel{margin-top:25px}.feature-banner{min-height:290px;padding:28px}.feature-banner h2{font-size:27px}.filter-bar{overflow-x:auto;flex-wrap:nowrap}.filter-btn{white-space:nowrap}.navbar-nav{padding:12px 0}.nav-cta{display:inline-block;margin-top:8px}}
@media(max-width:576px){body{font-size:14px}.container{padding-left:18px;padding-right:18px}.page-intro{padding:48px 0 38px}.page-intro h1{font-size:30px}.intro-copy{font-size:15px}.cover{height:165px}.card-body{padding:18px}.guide-list{grid-template-columns:1fr}.feature-banner{min-height:320px;padding:24px}.feature-banner h2{font-size:24px}.cta-box{padding:27px 22px}.cta-box h2{font-size:24px}.footer-bottom{display:block!important}.footer-bottom span{display:block;margin-top:5px}}

/* 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}